1 /* ELF executable support for BFD.
2 Copyright (C) 1991-2023 Free Software Foundation, Inc.
4 Written by Fred Fish @ Cygnus Support, from information published
5 in "UNIX System V Release 4, Programmers Guide: ANSI C and
6 Programming Support Tools". Sufficient support for gdb.
8 Rewritten by Mark Eichin @ Cygnus Support, from information
9 published in "System V Application Binary Interface", chapters 4
10 and 5, as well as the various "Processor Supplement" documents
11 derived from it. Added support for assembler and other object file
12 utilities. Further work done by Ken Raeburn (Cygnus Support), Michael
13 Meissner (Open Software Foundation), and Peter Hoogenboom (University
14 of Utah) to finish and extend this.
16 This file is part of BFD, the Binary File Descriptor library.
18 This program is free software; you can redistribute it and/or modify
19 it under the terms of the GNU General Public License as published by
20 the Free Software Foundation; either version 3 of the License, or
21 (at your option) any later version.
23 This program is distributed in the hope that it will be useful,
24 but WITHOUT ANY WARRANTY; without even the implied warranty of
25 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 GNU General Public License for more details.
28 You should have received a copy of the GNU General Public License
29 along with this program; if not, write to the Free Software
30 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
31 MA 02110-1301, USA. */
34 /* Problems and other issues to resolve.
36 (1) BFD expects there to be some fixed number of "sections" in
37 the object file. I.E. there is a "section_count" variable in the
38 bfd structure which contains the number of sections. However, ELF
39 supports multiple "views" of a file. In particular, with current
40 implementations, executable files typically have two tables, a
41 program header table and a section header table, both of which
42 partition the executable.
44 In ELF-speak, the "linking view" of the file uses the section header
45 table to access "sections" within the file, and the "execution view"
46 uses the program header table to access "segments" within the file.
47 "Segments" typically may contain all the data from one or more
50 Note that the section header table is optional in ELF executables,
51 but it is this information that is most useful to gdb. If the
52 section header table is missing, then gdb should probably try
53 to make do with the program header table. (FIXME)
55 (2) The code in this file is compiled twice, once in 32-bit mode and
56 once in 64-bit mode. More of it should be made size-independent
59 (3) ELF section symbols are handled rather sloppily now. This should
60 be cleaned up, and ELF section symbols reconciled with BFD section
63 (4) We need a published spec for 64-bit ELF. We've got some stuff here
64 that we're using for SPARC V9 64-bit chips, but don't assume that
70 #include "libiberty.h"
74 #include "libiberty.h"
76 /* Renaming structures, typedefs, macros and functions to be size-specific. */
77 #define Elf_External_Ehdr NAME(Elf,External_Ehdr)
78 #define Elf_External_Sym NAME(Elf,External_Sym)
79 #define Elf_External_Shdr NAME(Elf,External_Shdr)
80 #define Elf_External_Phdr NAME(Elf,External_Phdr)
81 #define Elf_External_Rel NAME(Elf,External_Rel)
82 #define Elf_External_Rela NAME(Elf,External_Rela)
83 #define Elf_External_Dyn NAME(Elf,External_Dyn)
85 #define elf_core_file_failing_command NAME(bfd_elf,core_file_failing_command)
86 #define elf_core_file_failing_signal NAME(bfd_elf,core_file_failing_signal)
87 #define elf_core_file_matches_executable_p \
88 NAME(bfd_elf,core_file_matches_executable_p)
89 #define elf_core_file_pid NAME(bfd_elf,core_file_pid)
90 #define elf_object_p NAME(bfd_elf,object_p)
91 #define elf_core_file_p NAME(bfd_elf,core_file_p)
92 #define elf_get_symtab_upper_bound NAME(bfd_elf,get_symtab_upper_bound)
93 #define elf_get_dynamic_symtab_upper_bound \
94 NAME(bfd_elf,get_dynamic_symtab_upper_bound)
95 #define elf_swap_reloc_in NAME(bfd_elf,swap_reloc_in)
96 #define elf_swap_reloca_in NAME(bfd_elf,swap_reloca_in)
97 #define elf_swap_reloc_out NAME(bfd_elf,swap_reloc_out)
98 #define elf_swap_reloca_out NAME(bfd_elf,swap_reloca_out)
99 #define elf_swap_symbol_in NAME(bfd_elf,swap_symbol_in)
100 #define elf_swap_symbol_out NAME(bfd_elf,swap_symbol_out)
101 #define elf_swap_phdr_in NAME(bfd_elf,swap_phdr_in)
102 #define elf_swap_phdr_out NAME(bfd_elf,swap_phdr_out)
103 #define elf_swap_dyn_in NAME(bfd_elf,swap_dyn_in)
104 #define elf_swap_dyn_out NAME(bfd_elf,swap_dyn_out)
105 #define elf_get_reloc_upper_bound NAME(bfd_elf,get_reloc_upper_bound)
106 #define elf_canonicalize_reloc NAME(bfd_elf,canonicalize_reloc)
107 #define elf_slurp_symbol_table NAME(bfd_elf,slurp_symbol_table)
108 #define elf_canonicalize_symtab NAME(bfd_elf,canonicalize_symtab)
109 #define elf_canonicalize_dynamic_symtab \
110 NAME(bfd_elf,canonicalize_dynamic_symtab)
111 #define elf_get_synthetic_symtab \
112 NAME(bfd_elf,get_synthetic_symtab)
113 #define elf_make_empty_symbol NAME(bfd_elf,make_empty_symbol)
114 #define elf_get_symbol_info NAME(bfd_elf,get_symbol_info)
115 #define elf_get_lineno NAME(bfd_elf,get_lineno)
116 #define elf_set_arch_mach NAME(bfd_elf,set_arch_mach)
117 #define elf_find_nearest_line NAME(bfd_elf,find_nearest_line)
118 #define elf_sizeof_headers NAME(bfd_elf,sizeof_headers)
119 #define elf_set_section_contents NAME(bfd_elf,set_section_contents)
120 #define elf_no_info_to_howto NAME(bfd_elf,no_info_to_howto)
121 #define elf_no_info_to_howto_rel NAME(bfd_elf,no_info_to_howto_rel)
122 #define elf_find_section NAME(bfd_elf,find_section)
123 #define elf_write_shdrs_and_ehdr NAME(bfd_elf,write_shdrs_and_ehdr)
124 #define elf_write_out_phdrs NAME(bfd_elf,write_out_phdrs)
125 #define elf_checksum_contents NAME(bfd_elf,checksum_contents)
126 #define elf_write_relocs NAME(bfd_elf,write_relocs)
127 #define elf_slurp_reloc_table NAME(bfd_elf,slurp_reloc_table)
130 #define ELF_R_INFO(X,Y) ELF64_R_INFO(X,Y)
131 #define ELF_R_SYM(X) ELF64_R_SYM(X)
132 #define ELF_R_TYPE(X) ELF64_R_TYPE(X)
133 #define ELFCLASS ELFCLASS64
135 #define LOG_FILE_ALIGN 3
138 #define ELF_R_INFO(X,Y) ELF32_R_INFO(X,Y)
139 #define ELF_R_SYM(X) ELF32_R_SYM(X)
140 #define ELF_R_TYPE(X) ELF32_R_TYPE(X)
141 #define ELFCLASS ELFCLASS32
143 #define LOG_FILE_ALIGN 2
147 static void elf_debug_section (int, Elf_Internal_Shdr
*);
150 static void elf_debug_file (Elf_Internal_Ehdr
*);
153 /* Structure swapping routines */
155 /* Should perhaps use put_offset, put_word, etc. For now, the two versions
156 can be handled by explicitly specifying 32 bits or "the long type". */
158 #define H_PUT_WORD H_PUT_64
159 #define H_PUT_SIGNED_WORD H_PUT_S64
160 #define H_GET_WORD H_GET_64
161 #define H_GET_SIGNED_WORD H_GET_S64
164 #define H_PUT_WORD H_PUT_32
165 #define H_PUT_SIGNED_WORD H_PUT_S32
166 #define H_GET_WORD H_GET_32
167 #define H_GET_SIGNED_WORD H_GET_S32
170 /* Translate an ELF symbol in external format into an ELF symbol in internal
174 elf_swap_symbol_in (bfd
*abfd
,
177 Elf_Internal_Sym
*dst
)
179 const Elf_External_Sym
*src
= (const Elf_External_Sym
*) psrc
;
180 const Elf_External_Sym_Shndx
*shndx
= (const Elf_External_Sym_Shndx
*) pshn
;
181 int signed_vma
= get_elf_backend_data (abfd
)->sign_extend_vma
;
183 dst
->st_name
= H_GET_32 (abfd
, src
->st_name
);
185 dst
->st_value
= H_GET_SIGNED_WORD (abfd
, src
->st_value
);
187 dst
->st_value
= H_GET_WORD (abfd
, src
->st_value
);
188 dst
->st_size
= H_GET_WORD (abfd
, src
->st_size
);
189 dst
->st_info
= H_GET_8 (abfd
, src
->st_info
);
190 dst
->st_other
= H_GET_8 (abfd
, src
->st_other
);
191 dst
->st_shndx
= H_GET_16 (abfd
, src
->st_shndx
);
192 if (dst
->st_shndx
== (SHN_XINDEX
& 0xffff))
196 dst
->st_shndx
= H_GET_32 (abfd
, shndx
->est_shndx
);
198 else if (dst
->st_shndx
>= (SHN_LORESERVE
& 0xffff))
199 dst
->st_shndx
+= SHN_LORESERVE
- (SHN_LORESERVE
& 0xffff);
200 dst
->st_target_internal
= 0;
204 /* Translate an ELF symbol in internal format into an ELF symbol in external
208 elf_swap_symbol_out (bfd
*abfd
,
209 const Elf_Internal_Sym
*src
,
214 Elf_External_Sym
*dst
= (Elf_External_Sym
*) cdst
;
215 H_PUT_32 (abfd
, src
->st_name
, dst
->st_name
);
216 H_PUT_WORD (abfd
, src
->st_value
, dst
->st_value
);
217 H_PUT_WORD (abfd
, src
->st_size
, dst
->st_size
);
218 H_PUT_8 (abfd
, src
->st_info
, dst
->st_info
);
219 H_PUT_8 (abfd
, src
->st_other
, dst
->st_other
);
221 if (tmp
>= (SHN_LORESERVE
& 0xffff) && tmp
< SHN_LORESERVE
)
225 H_PUT_32 (abfd
, tmp
, shndx
);
226 tmp
= SHN_XINDEX
& 0xffff;
228 H_PUT_16 (abfd
, tmp
, dst
->st_shndx
);
231 /* Translate an ELF file header in external format into an ELF file header in
235 elf_swap_ehdr_in (bfd
*abfd
,
236 const Elf_External_Ehdr
*src
,
237 Elf_Internal_Ehdr
*dst
)
239 int signed_vma
= get_elf_backend_data (abfd
)->sign_extend_vma
;
240 memcpy (dst
->e_ident
, src
->e_ident
, EI_NIDENT
);
241 dst
->e_type
= H_GET_16 (abfd
, src
->e_type
);
242 dst
->e_machine
= H_GET_16 (abfd
, src
->e_machine
);
243 dst
->e_version
= H_GET_32 (abfd
, src
->e_version
);
245 dst
->e_entry
= H_GET_SIGNED_WORD (abfd
, src
->e_entry
);
247 dst
->e_entry
= H_GET_WORD (abfd
, src
->e_entry
);
248 dst
->e_phoff
= H_GET_WORD (abfd
, src
->e_phoff
);
249 dst
->e_shoff
= H_GET_WORD (abfd
, src
->e_shoff
);
250 dst
->e_flags
= H_GET_32 (abfd
, src
->e_flags
);
251 dst
->e_ehsize
= H_GET_16 (abfd
, src
->e_ehsize
);
252 dst
->e_phentsize
= H_GET_16 (abfd
, src
->e_phentsize
);
253 dst
->e_phnum
= H_GET_16 (abfd
, src
->e_phnum
);
254 dst
->e_shentsize
= H_GET_16 (abfd
, src
->e_shentsize
);
255 dst
->e_shnum
= H_GET_16 (abfd
, src
->e_shnum
);
256 dst
->e_shstrndx
= H_GET_16 (abfd
, src
->e_shstrndx
);
259 /* Translate an ELF file header in internal format into an ELF file header in
263 elf_swap_ehdr_out (bfd
*abfd
,
264 const Elf_Internal_Ehdr
*src
,
265 Elf_External_Ehdr
*dst
)
268 int signed_vma
= get_elf_backend_data (abfd
)->sign_extend_vma
;
269 memcpy (dst
->e_ident
, src
->e_ident
, EI_NIDENT
);
270 /* note that all elements of dst are *arrays of unsigned char* already... */
271 H_PUT_16 (abfd
, src
->e_type
, dst
->e_type
);
272 H_PUT_16 (abfd
, src
->e_machine
, dst
->e_machine
);
273 H_PUT_32 (abfd
, src
->e_version
, dst
->e_version
);
275 H_PUT_SIGNED_WORD (abfd
, src
->e_entry
, dst
->e_entry
);
277 H_PUT_WORD (abfd
, src
->e_entry
, dst
->e_entry
);
278 H_PUT_WORD (abfd
, src
->e_phoff
, dst
->e_phoff
);
279 H_PUT_WORD (abfd
, src
->e_shoff
, dst
->e_shoff
);
280 H_PUT_32 (abfd
, src
->e_flags
, dst
->e_flags
);
281 H_PUT_16 (abfd
, src
->e_ehsize
, dst
->e_ehsize
);
282 H_PUT_16 (abfd
, src
->e_phentsize
, dst
->e_phentsize
);
286 H_PUT_16 (abfd
, tmp
, dst
->e_phnum
);
287 H_PUT_16 (abfd
, src
->e_shentsize
, dst
->e_shentsize
);
289 if (tmp
>= (SHN_LORESERVE
& 0xffff))
291 H_PUT_16 (abfd
, tmp
, dst
->e_shnum
);
292 tmp
= src
->e_shstrndx
;
293 if (tmp
>= (SHN_LORESERVE
& 0xffff))
294 tmp
= SHN_XINDEX
& 0xffff;
295 H_PUT_16 (abfd
, tmp
, dst
->e_shstrndx
);
298 /* Translate an ELF section header table entry in external format into an
299 ELF section header table entry in internal format. */
302 elf_swap_shdr_in (bfd
*abfd
,
303 const Elf_External_Shdr
*src
,
304 Elf_Internal_Shdr
*dst
)
306 int signed_vma
= get_elf_backend_data (abfd
)->sign_extend_vma
;
308 dst
->sh_name
= H_GET_32 (abfd
, src
->sh_name
);
309 dst
->sh_type
= H_GET_32 (abfd
, src
->sh_type
);
310 dst
->sh_flags
= H_GET_WORD (abfd
, src
->sh_flags
);
312 dst
->sh_addr
= H_GET_SIGNED_WORD (abfd
, src
->sh_addr
);
314 dst
->sh_addr
= H_GET_WORD (abfd
, src
->sh_addr
);
315 dst
->sh_offset
= H_GET_WORD (abfd
, src
->sh_offset
);
316 dst
->sh_size
= H_GET_WORD (abfd
, src
->sh_size
);
317 /* PR 23657. Check for invalid section size, in sections with contents.
318 Note - we do not set an error value here because the contents
319 of this particular section might not be needed by the consumer. */
320 if (dst
->sh_type
!= SHT_NOBITS
)
322 ufile_ptr filesize
= bfd_get_file_size (abfd
);
325 && ((ufile_ptr
) dst
->sh_offset
> filesize
326 || dst
->sh_size
> filesize
- dst
->sh_offset
)
329 _bfd_error_handler (_("warning: %pB has a section "
330 "extending past end of file"), abfd
);
334 dst
->sh_link
= H_GET_32 (abfd
, src
->sh_link
);
335 dst
->sh_info
= H_GET_32 (abfd
, src
->sh_info
);
336 dst
->sh_addralign
= H_GET_WORD (abfd
, src
->sh_addralign
);
337 dst
->sh_entsize
= H_GET_WORD (abfd
, src
->sh_entsize
);
338 dst
->bfd_section
= NULL
;
339 dst
->contents
= NULL
;
342 /* Translate an ELF section header table entry in internal format into an
343 ELF section header table entry in external format. */
346 elf_swap_shdr_out (bfd
*abfd
,
347 const Elf_Internal_Shdr
*src
,
348 Elf_External_Shdr
*dst
)
350 /* note that all elements of dst are *arrays of unsigned char* already... */
351 H_PUT_32 (abfd
, src
->sh_name
, dst
->sh_name
);
352 H_PUT_32 (abfd
, src
->sh_type
, dst
->sh_type
);
353 H_PUT_WORD (abfd
, src
->sh_flags
, dst
->sh_flags
);
354 H_PUT_WORD (abfd
, src
->sh_addr
, dst
->sh_addr
);
355 H_PUT_WORD (abfd
, src
->sh_offset
, dst
->sh_offset
);
356 H_PUT_WORD (abfd
, src
->sh_size
, dst
->sh_size
);
357 H_PUT_32 (abfd
, src
->sh_link
, dst
->sh_link
);
358 H_PUT_32 (abfd
, src
->sh_info
, dst
->sh_info
);
359 H_PUT_WORD (abfd
, src
->sh_addralign
, dst
->sh_addralign
);
360 H_PUT_WORD (abfd
, src
->sh_entsize
, dst
->sh_entsize
);
363 /* Translate an ELF program header table entry in external format into an
364 ELF program header table entry in internal format. */
367 elf_swap_phdr_in (bfd
*abfd
,
368 const Elf_External_Phdr
*src
,
369 Elf_Internal_Phdr
*dst
)
371 int signed_vma
= get_elf_backend_data (abfd
)->sign_extend_vma
;
373 dst
->p_type
= H_GET_32 (abfd
, src
->p_type
);
374 dst
->p_flags
= H_GET_32 (abfd
, src
->p_flags
);
375 dst
->p_offset
= H_GET_WORD (abfd
, src
->p_offset
);
378 dst
->p_vaddr
= H_GET_SIGNED_WORD (abfd
, src
->p_vaddr
);
379 dst
->p_paddr
= H_GET_SIGNED_WORD (abfd
, src
->p_paddr
);
383 dst
->p_vaddr
= H_GET_WORD (abfd
, src
->p_vaddr
);
384 dst
->p_paddr
= H_GET_WORD (abfd
, src
->p_paddr
);
386 dst
->p_filesz
= H_GET_WORD (abfd
, src
->p_filesz
);
387 dst
->p_memsz
= H_GET_WORD (abfd
, src
->p_memsz
);
388 dst
->p_align
= H_GET_WORD (abfd
, src
->p_align
);
392 elf_swap_phdr_out (bfd
*abfd
,
393 const Elf_Internal_Phdr
*src
,
394 Elf_External_Phdr
*dst
)
396 const struct elf_backend_data
*bed
;
399 bed
= get_elf_backend_data (abfd
);
400 p_paddr
= bed
->want_p_paddr_set_to_zero
? 0 : src
->p_paddr
;
402 /* note that all elements of dst are *arrays of unsigned char* already... */
403 H_PUT_32 (abfd
, src
->p_type
, dst
->p_type
);
404 H_PUT_WORD (abfd
, src
->p_offset
, dst
->p_offset
);
405 H_PUT_WORD (abfd
, src
->p_vaddr
, dst
->p_vaddr
);
406 H_PUT_WORD (abfd
, p_paddr
, dst
->p_paddr
);
407 H_PUT_WORD (abfd
, src
->p_filesz
, dst
->p_filesz
);
408 H_PUT_WORD (abfd
, src
->p_memsz
, dst
->p_memsz
);
409 H_PUT_32 (abfd
, src
->p_flags
, dst
->p_flags
);
410 H_PUT_WORD (abfd
, src
->p_align
, dst
->p_align
);
413 /* Translate an ELF reloc from external format to internal format. */
415 elf_swap_reloc_in (bfd
*abfd
,
417 Elf_Internal_Rela
*dst
)
419 const Elf_External_Rel
*src
= (const Elf_External_Rel
*) s
;
420 dst
->r_offset
= H_GET_WORD (abfd
, src
->r_offset
);
421 dst
->r_info
= H_GET_WORD (abfd
, src
->r_info
);
426 elf_swap_reloca_in (bfd
*abfd
,
428 Elf_Internal_Rela
*dst
)
430 const Elf_External_Rela
*src
= (const Elf_External_Rela
*) s
;
431 dst
->r_offset
= H_GET_WORD (abfd
, src
->r_offset
);
432 dst
->r_info
= H_GET_WORD (abfd
, src
->r_info
);
433 dst
->r_addend
= H_GET_SIGNED_WORD (abfd
, src
->r_addend
);
436 /* Translate an ELF reloc from internal format to external format. */
438 elf_swap_reloc_out (bfd
*abfd
,
439 const Elf_Internal_Rela
*src
,
442 Elf_External_Rel
*dst
= (Elf_External_Rel
*) d
;
443 H_PUT_WORD (abfd
, src
->r_offset
, dst
->r_offset
);
444 H_PUT_WORD (abfd
, src
->r_info
, dst
->r_info
);
448 elf_swap_reloca_out (bfd
*abfd
,
449 const Elf_Internal_Rela
*src
,
452 Elf_External_Rela
*dst
= (Elf_External_Rela
*) d
;
453 H_PUT_WORD (abfd
, src
->r_offset
, dst
->r_offset
);
454 H_PUT_WORD (abfd
, src
->r_info
, dst
->r_info
);
455 H_PUT_SIGNED_WORD (abfd
, src
->r_addend
, dst
->r_addend
);
459 elf_swap_dyn_in (bfd
*abfd
,
461 Elf_Internal_Dyn
*dst
)
463 const Elf_External_Dyn
*src
= (const Elf_External_Dyn
*) p
;
465 dst
->d_tag
= H_GET_WORD (abfd
, src
->d_tag
);
466 dst
->d_un
.d_val
= H_GET_WORD (abfd
, src
->d_un
.d_val
);
470 elf_swap_dyn_out (bfd
*abfd
,
471 const Elf_Internal_Dyn
*src
,
474 Elf_External_Dyn
*dst
= (Elf_External_Dyn
*) p
;
476 H_PUT_WORD (abfd
, src
->d_tag
, dst
->d_tag
);
477 H_PUT_WORD (abfd
, src
->d_un
.d_val
, dst
->d_un
.d_val
);
480 /* ELF .o/exec file reading */
482 /* Begin processing a given object.
484 First we validate the file by reading in the ELF header and checking
488 elf_file_p (Elf_External_Ehdr
*x_ehdrp
)
490 return ((x_ehdrp
->e_ident
[EI_MAG0
] == ELFMAG0
)
491 && (x_ehdrp
->e_ident
[EI_MAG1
] == ELFMAG1
)
492 && (x_ehdrp
->e_ident
[EI_MAG2
] == ELFMAG2
)
493 && (x_ehdrp
->e_ident
[EI_MAG3
] == ELFMAG3
));
496 /* Check to see if the file associated with ABFD matches the target vector
499 Note that we may be called several times with the same ABFD, but different
500 target vectors, most of which will not match. We have to avoid leaving
501 any side effects in ABFD, or any data it points to (like tdata), if the
502 file does not match the target vector. */
505 elf_object_p (bfd
*abfd
)
507 Elf_External_Ehdr x_ehdr
; /* Elf file header, external form */
508 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
509 Elf_External_Shdr x_shdr
; /* Section header table entry, external form */
510 Elf_Internal_Shdr i_shdr
;
511 Elf_Internal_Shdr
*i_shdrp
; /* Section header table, internal form */
512 unsigned int shindex
;
513 const struct elf_backend_data
*ebd
;
515 const bfd_target
*target
;
517 /* Read in the ELF header in external format. */
519 if (bfd_bread (&x_ehdr
, sizeof (x_ehdr
), abfd
) != sizeof (x_ehdr
))
521 if (bfd_get_error () != bfd_error_system_call
)
522 goto got_wrong_format_error
;
527 /* Now check to see if we have a valid ELF file, and one that BFD can
528 make use of. The magic number must match, the address size ('class')
529 and byte-swapping must match our XVEC entry, and it must have a
530 section header table (FIXME: See comments re sections at top of this
533 if (! elf_file_p (&x_ehdr
)
534 || x_ehdr
.e_ident
[EI_VERSION
] != EV_CURRENT
535 || x_ehdr
.e_ident
[EI_CLASS
] != ELFCLASS
)
536 goto got_wrong_format_error
;
538 /* Check that file's byte order matches xvec's */
539 switch (x_ehdr
.e_ident
[EI_DATA
])
541 case ELFDATA2MSB
: /* Big-endian */
542 if (! bfd_header_big_endian (abfd
))
543 goto got_wrong_format_error
;
545 case ELFDATA2LSB
: /* Little-endian */
546 if (! bfd_header_little_endian (abfd
))
547 goto got_wrong_format_error
;
549 case ELFDATANONE
: /* No data encoding specified */
550 default: /* Unknown data encoding specified */
551 goto got_wrong_format_error
;
556 /* Allocate an instance of the elf_obj_tdata structure and hook it up to
557 the tdata pointer in the bfd. */
559 if (! (*target
->_bfd_set_format
[bfd_object
]) (abfd
))
562 /* Now that we know the byte order, swap in the rest of the header */
563 i_ehdrp
= elf_elfheader (abfd
);
564 elf_swap_ehdr_in (abfd
, &x_ehdr
, i_ehdrp
);
566 elf_debug_file (i_ehdrp
);
569 /* Reject ET_CORE (header indicates core file, not object file) */
570 if (i_ehdrp
->e_type
== ET_CORE
)
571 goto got_wrong_format_error
;
573 /* If this is a relocatable file and there is no section header
574 table, then we're hosed. */
575 if (i_ehdrp
->e_shoff
< sizeof (x_ehdr
) && i_ehdrp
->e_type
== ET_REL
)
576 goto got_wrong_format_error
;
578 /* As a simple sanity check, verify that what BFD thinks is the
579 size of each section header table entry actually matches the size
580 recorded in the file, but only if there are any sections. */
581 if (i_ehdrp
->e_shentsize
!= sizeof (x_shdr
) && i_ehdrp
->e_shnum
!= 0)
582 goto got_wrong_format_error
;
584 /* Further sanity check. */
585 if (i_ehdrp
->e_shoff
< sizeof (x_ehdr
) && i_ehdrp
->e_shnum
!= 0)
586 goto got_wrong_format_error
;
588 ebd
= get_elf_backend_data (abfd
);
589 if (ebd
->s
->arch_size
!= ARCH_SIZE
)
590 goto got_wrong_format_error
;
592 /* Check that the ELF e_machine field matches what this particular
593 BFD format expects. */
594 if (ebd
->elf_machine_code
!= i_ehdrp
->e_machine
595 && (ebd
->elf_machine_alt1
== 0
596 || i_ehdrp
->e_machine
!= ebd
->elf_machine_alt1
)
597 && (ebd
->elf_machine_alt2
== 0
598 || i_ehdrp
->e_machine
!= ebd
->elf_machine_alt2
)
599 && ebd
->elf_machine_code
!= EM_NONE
)
600 goto got_wrong_format_error
;
602 if (i_ehdrp
->e_type
== ET_EXEC
)
603 abfd
->flags
|= EXEC_P
;
604 else if (i_ehdrp
->e_type
== ET_DYN
)
605 abfd
->flags
|= DYNAMIC
;
607 if (i_ehdrp
->e_phnum
> 0)
608 abfd
->flags
|= D_PAGED
;
610 if (! bfd_default_set_arch_mach (abfd
, ebd
->arch
, 0))
612 /* It's OK if this fails for the generic target. */
613 if (ebd
->elf_machine_code
!= EM_NONE
)
617 if (ebd
->elf_machine_code
!= EM_NONE
618 && i_ehdrp
->e_ident
[EI_OSABI
] != ebd
->elf_osabi
619 && ebd
->elf_osabi
!= ELFOSABI_NONE
)
620 goto got_wrong_format_error
;
622 if (i_ehdrp
->e_shoff
>= sizeof (x_ehdr
))
624 file_ptr where
= (file_ptr
) i_ehdrp
->e_shoff
;
626 /* Seek to the section header table in the file. */
627 if (bfd_seek (abfd
, where
, SEEK_SET
) != 0)
630 /* Read the first section header at index 0, and convert to internal
632 if (bfd_bread (&x_shdr
, sizeof x_shdr
, abfd
) != sizeof (x_shdr
))
634 elf_swap_shdr_in (abfd
, &x_shdr
, &i_shdr
);
636 /* If the section count is zero, the actual count is in the first
638 if (i_ehdrp
->e_shnum
== SHN_UNDEF
)
640 i_ehdrp
->e_shnum
= i_shdr
.sh_size
;
641 if (i_ehdrp
->e_shnum
>= SHN_LORESERVE
642 || i_ehdrp
->e_shnum
!= i_shdr
.sh_size
643 || i_ehdrp
->e_shnum
== 0)
644 goto got_wrong_format_error
;
647 /* And similarly for the string table index. */
648 if (i_ehdrp
->e_shstrndx
== (SHN_XINDEX
& 0xffff))
650 i_ehdrp
->e_shstrndx
= i_shdr
.sh_link
;
651 if (i_ehdrp
->e_shstrndx
!= i_shdr
.sh_link
)
652 goto got_wrong_format_error
;
655 /* And program headers. */
656 if (i_ehdrp
->e_phnum
== PN_XNUM
&& i_shdr
.sh_info
!= 0)
658 i_ehdrp
->e_phnum
= i_shdr
.sh_info
;
659 if (i_ehdrp
->e_phnum
!= i_shdr
.sh_info
)
660 goto got_wrong_format_error
;
663 /* Sanity check that we can read all of the section headers.
664 It ought to be good enough to just read the last one. */
665 if (i_ehdrp
->e_shnum
!= 1)
667 /* Check that we don't have a totally silly number of sections. */
668 if (i_ehdrp
->e_shnum
> (unsigned int) -1 / sizeof (x_shdr
)
669 || i_ehdrp
->e_shnum
> (unsigned int) -1 / sizeof (i_shdr
))
670 goto got_wrong_format_error
;
672 where
+= (i_ehdrp
->e_shnum
- 1) * sizeof (x_shdr
);
673 if ((bfd_size_type
) where
<= i_ehdrp
->e_shoff
)
674 goto got_wrong_format_error
;
676 if (bfd_seek (abfd
, where
, SEEK_SET
) != 0)
678 if (bfd_bread (&x_shdr
, sizeof x_shdr
, abfd
) != sizeof (x_shdr
))
681 /* Back to where we were. */
682 where
= i_ehdrp
->e_shoff
+ sizeof (x_shdr
);
683 if (bfd_seek (abfd
, where
, SEEK_SET
) != 0)
688 /* Allocate space for a copy of the section header table in
690 if (i_ehdrp
->e_shnum
!= 0)
692 Elf_Internal_Shdr
*shdrp
;
693 unsigned int num_sec
;
696 if (_bfd_mul_overflow (i_ehdrp
->e_shnum
, sizeof (*i_shdrp
), &amt
))
697 goto got_wrong_format_error
;
698 i_shdrp
= (Elf_Internal_Shdr
*) bfd_alloc (abfd
, amt
);
701 num_sec
= i_ehdrp
->e_shnum
;
702 elf_numsections (abfd
) = num_sec
;
703 if (_bfd_mul_overflow (num_sec
, sizeof (i_shdrp
), &amt
))
704 goto got_wrong_format_error
;
705 elf_elfsections (abfd
) = (Elf_Internal_Shdr
**) bfd_alloc (abfd
, amt
);
706 if (!elf_elfsections (abfd
))
708 elf_tdata (abfd
)->being_created
= bfd_zalloc (abfd
, num_sec
);
709 if (!elf_tdata (abfd
)->being_created
)
712 memcpy (i_shdrp
, &i_shdr
, sizeof (*i_shdrp
));
713 for (shdrp
= i_shdrp
, shindex
= 0; shindex
< num_sec
; shindex
++)
714 elf_elfsections (abfd
)[shindex
] = shdrp
++;
716 /* Read in the rest of the section header table and convert it
718 for (shindex
= 1; shindex
< i_ehdrp
->e_shnum
; shindex
++)
720 if (bfd_bread (&x_shdr
, sizeof x_shdr
, abfd
) != sizeof (x_shdr
))
722 elf_swap_shdr_in (abfd
, &x_shdr
, i_shdrp
+ shindex
);
724 /* Sanity check sh_link and sh_info. */
725 if (i_shdrp
[shindex
].sh_link
>= num_sec
)
727 /* PR 10478: Accept Solaris binaries with a sh_link
728 field set to SHN_BEFORE or SHN_AFTER. */
729 switch (ebd
->elf_machine_code
)
738 if (i_shdrp
[shindex
].sh_link
== (SHN_LORESERVE
& 0xffff) /* SHN_BEFORE */
739 || i_shdrp
[shindex
].sh_link
== ((SHN_LORESERVE
+ 1) & 0xffff) /* SHN_AFTER */)
741 /* Otherwise fall through. */
743 goto got_wrong_format_error
;
747 if (((i_shdrp
[shindex
].sh_flags
& SHF_INFO_LINK
)
748 || i_shdrp
[shindex
].sh_type
== SHT_RELA
749 || i_shdrp
[shindex
].sh_type
== SHT_REL
)
750 && i_shdrp
[shindex
].sh_info
>= num_sec
)
751 goto got_wrong_format_error
;
753 /* If the section is loaded, but not page aligned, clear
755 if (i_shdrp
[shindex
].sh_size
!= 0
756 && (i_shdrp
[shindex
].sh_flags
& SHF_ALLOC
) != 0
757 && i_shdrp
[shindex
].sh_type
!= SHT_NOBITS
758 && (((i_shdrp
[shindex
].sh_addr
- i_shdrp
[shindex
].sh_offset
)
761 abfd
->flags
&= ~D_PAGED
;
764 if (i_ehdrp
->e_shstrndx
>= elf_numsections (abfd
)
765 || i_shdrp
[i_ehdrp
->e_shstrndx
].sh_type
!= SHT_STRTAB
)
768 We used to just goto got_wrong_format_error here
769 but there are binaries in existance for which this test
770 will prevent the binutils from working with them at all.
771 So we are kind, and reset the string index value to 0
772 so that at least some processing can be done. */
773 i_ehdrp
->e_shstrndx
= SHN_UNDEF
;
774 if (!abfd
->read_only
)
777 (_("warning: %pB has a corrupt string table index"), abfd
);
782 else if (i_ehdrp
->e_shstrndx
!= SHN_UNDEF
)
783 goto got_wrong_format_error
;
785 /* Read in the program headers. */
786 if (i_ehdrp
->e_phnum
== 0)
787 elf_tdata (abfd
)->phdr
= NULL
;
790 Elf_Internal_Phdr
*i_phdr
;
795 /* Check for a corrupt input file with an impossibly large number
796 of program headers. */
797 filesize
= bfd_get_file_size (abfd
);
799 && i_ehdrp
->e_phnum
> filesize
/ sizeof (Elf_External_Phdr
))
800 goto got_wrong_format_error
;
801 if (_bfd_mul_overflow (i_ehdrp
->e_phnum
, sizeof (*i_phdr
), &amt
))
802 goto got_wrong_format_error
;
803 elf_tdata (abfd
)->phdr
804 = (Elf_Internal_Phdr
*) bfd_alloc (abfd
, amt
);
805 if (elf_tdata (abfd
)->phdr
== NULL
)
807 if (bfd_seek (abfd
, (file_ptr
) i_ehdrp
->e_phoff
, SEEK_SET
) != 0)
809 i_phdr
= elf_tdata (abfd
)->phdr
;
810 for (i
= 0; i
< i_ehdrp
->e_phnum
; i
++, i_phdr
++)
812 Elf_External_Phdr x_phdr
;
814 if (bfd_bread (&x_phdr
, sizeof x_phdr
, abfd
) != sizeof x_phdr
)
816 elf_swap_phdr_in (abfd
, &x_phdr
, i_phdr
);
817 /* Too much code in BFD relies on alignment being a power of
818 two, as required by the ELF spec. */
819 if (i_phdr
->p_align
!= (i_phdr
->p_align
& -i_phdr
->p_align
))
821 i_phdr
->p_align
&= -i_phdr
->p_align
;
822 if (!abfd
->read_only
)
824 _bfd_error_handler (_("warning: %pB has a program header "
825 "with invalid alignment"), abfd
);
832 if (i_ehdrp
->e_shstrndx
!= 0 && i_ehdrp
->e_shoff
>= sizeof (x_ehdr
))
834 unsigned int num_sec
;
836 /* Once all of the section headers have been read and converted, we
837 can start processing them. Note that the first section header is
838 a dummy placeholder entry, so we ignore it. */
839 num_sec
= elf_numsections (abfd
);
840 for (shindex
= 1; shindex
< num_sec
; shindex
++)
841 if (!bfd_section_from_shdr (abfd
, shindex
))
844 /* Set up ELF sections for SHF_GROUP and SHF_LINK_ORDER. */
845 if (! _bfd_elf_setup_sections (abfd
))
846 goto got_wrong_format_error
;
849 /* Let the backend double check the format and override global
851 if (ebd
->elf_backend_object_p
)
853 if (! (*ebd
->elf_backend_object_p
) (abfd
))
854 goto got_wrong_format_error
;
857 /* Remember the entry point specified in the ELF file header. */
858 bfd_set_start_address (abfd
, i_ehdrp
->e_entry
);
860 /* If we have created any reloc sections that are associated with
861 debugging sections, mark the reloc sections as debugging as well. */
862 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
864 if ((elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
865 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
)
866 && elf_section_data (s
)->this_hdr
.sh_info
> 0)
868 unsigned long targ_index
;
871 targ_index
= elf_section_data (s
)->this_hdr
.sh_info
;
872 targ_sec
= bfd_section_from_elf_index (abfd
, targ_index
);
874 && (targ_sec
->flags
& SEC_DEBUGGING
) != 0)
875 s
->flags
|= SEC_DEBUGGING
;
878 return _bfd_no_cleanup
;
880 got_wrong_format_error
:
881 bfd_set_error (bfd_error_wrong_format
);
887 /* ELF .o/exec file writing */
889 /* Write out the relocs. */
892 elf_write_relocs (bfd
*abfd
, asection
*sec
, void *data
)
894 const struct elf_backend_data
* const bed
= get_elf_backend_data (abfd
);
895 bool *failedp
= (bool *) data
;
896 Elf_Internal_Shdr
*rela_hdr
;
898 void (*swap_out
) (bfd
*, const Elf_Internal_Rela
*, bfd_byte
*);
906 /* If we have already failed, don't do anything. */
910 if ((sec
->flags
& SEC_RELOC
) == 0)
913 /* The linker backend writes the relocs out itself, and sets the
914 reloc_count field to zero to inhibit writing them here. Also,
915 sometimes the SEC_RELOC flag gets set even when there aren't any
917 if (sec
->reloc_count
== 0)
920 /* If we have opened an existing file for update, reloc_count may be
921 set even though we are not linking. In that case we have nothing
923 if (sec
->orelocation
== NULL
)
926 rela_hdr
= elf_section_data (sec
)->rela
.hdr
;
927 if (rela_hdr
== NULL
)
928 rela_hdr
= elf_section_data (sec
)->rel
.hdr
;
930 rela_hdr
->sh_size
= rela_hdr
->sh_entsize
* sec
->reloc_count
;
931 if (_bfd_mul_overflow (sec
->reloc_count
, rela_hdr
->sh_entsize
, &amt
)
932 || (rela_hdr
->contents
= bfd_alloc (abfd
, amt
)) == NULL
)
934 bfd_set_error (bfd_error_no_memory
);
939 /* Figure out whether the relocations are RELA or REL relocations. */
940 if (rela_hdr
->sh_type
== SHT_RELA
)
942 swap_out
= elf_swap_reloca_out
;
943 extsize
= sizeof (Elf_External_Rela
);
945 else if (rela_hdr
->sh_type
== SHT_REL
)
947 swap_out
= elf_swap_reloc_out
;
948 extsize
= sizeof (Elf_External_Rel
);
951 /* Every relocation section should be either an SHT_RELA or an
955 /* The address of an ELF reloc is section relative for an object
956 file, and absolute for an executable file or shared library.
957 The address of a BFD reloc is always section relative. */
959 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) != 0)
960 addr_offset
= sec
->vma
;
962 /* orelocation has the data, reloc_count has the count... */
965 dst_rela
= rela_hdr
->contents
;
967 for (idx
= 0; idx
< sec
->reloc_count
; idx
++, dst_rela
+= extsize
)
969 Elf_Internal_Rela src_rela
;
974 ptr
= sec
->orelocation
[idx
];
975 sym
= *ptr
->sym_ptr_ptr
;
978 else if (bfd_is_abs_section (sym
->section
) && sym
->value
== 0)
983 n
= _bfd_elf_symbol_from_bfd_symbol (abfd
, &sym
);
992 if ((*ptr
->sym_ptr_ptr
)->the_bfd
!= NULL
993 && (*ptr
->sym_ptr_ptr
)->the_bfd
->xvec
!= abfd
->xvec
994 && ! _bfd_elf_validate_reloc (abfd
, ptr
))
1000 if (ptr
->howto
== NULL
)
1006 #if defined(BFD64) && ARCH_SIZE == 32
1007 if (rela_hdr
->sh_type
== SHT_RELA
1008 && ptr
->howto
->bitsize
> 32
1009 && ptr
->addend
- INT32_MIN
> UINT32_MAX
)
1011 _bfd_error_handler (_("%pB: %pA+%" PRIx64
": "
1012 "relocation addend %" PRIx64
" too large"),
1013 abfd
, sec
, (uint64_t) ptr
->address
,
1014 (uint64_t) ptr
->addend
);
1016 bfd_set_error (bfd_error_bad_value
);
1020 src_rela
.r_offset
= ptr
->address
+ addr_offset
;
1021 src_rela
.r_info
= ELF_R_INFO (n
, ptr
->howto
->type
);
1022 src_rela
.r_addend
= ptr
->addend
;
1023 (*swap_out
) (abfd
, &src_rela
, dst_rela
);
1026 if (elf_section_data (sec
)->has_secondary_relocs
1027 && !bed
->write_secondary_relocs (abfd
, sec
))
1034 /* Write out the program headers. */
1037 elf_write_out_phdrs (bfd
*abfd
,
1038 const Elf_Internal_Phdr
*phdr
,
1043 Elf_External_Phdr extphdr
;
1045 elf_swap_phdr_out (abfd
, phdr
, &extphdr
);
1046 if (bfd_bwrite (&extphdr
, sizeof (Elf_External_Phdr
), abfd
)
1047 != sizeof (Elf_External_Phdr
))
1054 /* Write out the section headers and the ELF file header. */
1057 elf_write_shdrs_and_ehdr (bfd
*abfd
)
1059 Elf_External_Ehdr x_ehdr
; /* Elf file header, external form */
1060 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
1061 Elf_External_Shdr
*x_shdrp
; /* Section header table, external form */
1062 Elf_Internal_Shdr
**i_shdrp
; /* Section header table, internal form */
1066 i_ehdrp
= elf_elfheader (abfd
);
1067 i_shdrp
= elf_elfsections (abfd
);
1069 /* swap the header before spitting it out... */
1072 elf_debug_file (i_ehdrp
);
1074 elf_swap_ehdr_out (abfd
, i_ehdrp
, &x_ehdr
);
1075 amt
= sizeof (x_ehdr
);
1076 if (bfd_seek (abfd
, (file_ptr
) 0, SEEK_SET
) != 0
1077 || bfd_bwrite (&x_ehdr
, amt
, abfd
) != amt
)
1080 /* Some fields in the first section header handle overflow of ehdr
1082 if (i_ehdrp
->e_phnum
>= PN_XNUM
)
1083 i_shdrp
[0]->sh_info
= i_ehdrp
->e_phnum
;
1084 if (i_ehdrp
->e_shnum
>= (SHN_LORESERVE
& 0xffff))
1085 i_shdrp
[0]->sh_size
= i_ehdrp
->e_shnum
;
1086 if (i_ehdrp
->e_shstrndx
>= (SHN_LORESERVE
& 0xffff))
1087 i_shdrp
[0]->sh_link
= i_ehdrp
->e_shstrndx
;
1089 /* at this point we've concocted all the ELF sections... */
1090 if (_bfd_mul_overflow (i_ehdrp
->e_shnum
, sizeof (*x_shdrp
), &amt
))
1092 bfd_set_error (bfd_error_no_memory
);
1095 x_shdrp
= (Elf_External_Shdr
*) bfd_alloc (abfd
, amt
);
1099 for (count
= 0; count
< i_ehdrp
->e_shnum
; i_shdrp
++, count
++)
1102 elf_debug_section (count
, *i_shdrp
);
1104 elf_swap_shdr_out (abfd
, *i_shdrp
, x_shdrp
+ count
);
1106 amt
= (bfd_size_type
) i_ehdrp
->e_shnum
* sizeof (*x_shdrp
);
1107 if (bfd_seek (abfd
, (file_ptr
) i_ehdrp
->e_shoff
, SEEK_SET
) != 0
1108 || bfd_bwrite (x_shdrp
, amt
, abfd
) != amt
)
1111 /* need to dump the string table too... */
1117 elf_checksum_contents (bfd
*abfd
,
1118 void (*process
) (const void *, size_t, void *),
1121 Elf_Internal_Ehdr
*i_ehdrp
= elf_elfheader (abfd
);
1122 Elf_Internal_Shdr
**i_shdrp
= elf_elfsections (abfd
);
1123 Elf_Internal_Phdr
*i_phdrp
= elf_tdata (abfd
)->phdr
;
1124 unsigned int count
, num
;
1127 Elf_External_Ehdr x_ehdr
;
1128 Elf_Internal_Ehdr i_ehdr
;
1131 i_ehdr
.e_phoff
= i_ehdr
.e_shoff
= 0;
1132 elf_swap_ehdr_out (abfd
, &i_ehdr
, &x_ehdr
);
1133 (*process
) (&x_ehdr
, sizeof x_ehdr
, arg
);
1136 num
= i_ehdrp
->e_phnum
;
1137 for (count
= 0; count
< num
; count
++)
1139 Elf_External_Phdr x_phdr
;
1140 elf_swap_phdr_out (abfd
, &i_phdrp
[count
], &x_phdr
);
1141 (*process
) (&x_phdr
, sizeof x_phdr
, arg
);
1144 num
= elf_numsections (abfd
);
1145 for (count
= 0; count
< num
; count
++)
1147 Elf_Internal_Shdr i_shdr
;
1148 Elf_External_Shdr x_shdr
;
1149 bfd_byte
*contents
, *free_contents
;
1151 i_shdr
= *i_shdrp
[count
];
1152 i_shdr
.sh_offset
= 0;
1154 elf_swap_shdr_out (abfd
, &i_shdr
, &x_shdr
);
1155 (*process
) (&x_shdr
, sizeof x_shdr
, arg
);
1157 /* Process the section's contents, if it has some.
1158 PR ld/12451: Read them in if necessary. */
1159 if (i_shdr
.sh_type
== SHT_NOBITS
)
1161 free_contents
= NULL
;
1162 contents
= i_shdr
.contents
;
1163 if (contents
== NULL
)
1167 sec
= bfd_section_from_elf_index (abfd
, count
);
1170 contents
= sec
->contents
;
1171 if (contents
== NULL
)
1173 /* Force rereading from file. */
1174 sec
->flags
&= ~SEC_IN_MEMORY
;
1175 if (!bfd_malloc_and_get_section (abfd
, sec
, &free_contents
))
1177 contents
= free_contents
;
1181 if (contents
!= NULL
)
1183 (*process
) (contents
, i_shdr
.sh_size
, arg
);
1184 free (free_contents
);
1192 elf_slurp_symbol_table (bfd
*abfd
, asymbol
**symptrs
, bool dynamic
)
1194 Elf_Internal_Shdr
*hdr
;
1195 Elf_Internal_Shdr
*verhdr
;
1196 unsigned long symcount
; /* Number of external ELF symbols */
1197 elf_symbol_type
*sym
; /* Pointer to current bfd symbol */
1198 elf_symbol_type
*symbase
; /* Buffer for generated bfd symbols */
1199 Elf_Internal_Sym
*isym
;
1200 Elf_Internal_Sym
*isymend
;
1201 Elf_Internal_Sym
*isymbuf
= NULL
;
1202 Elf_External_Versym
*xver
;
1203 Elf_External_Versym
*xverbuf
= NULL
;
1204 const struct elf_backend_data
*ebd
;
1207 /* Read each raw ELF symbol, converting from external ELF form to
1208 internal ELF form, and then using the information to create a
1209 canonical bfd symbol table entry.
1211 Note that we allocate the initial bfd canonical symbol buffer
1212 based on a one-to-one mapping of the ELF symbols to canonical
1213 symbols. We actually use all the ELF symbols, so there will be no
1214 space left over at the end. When we have all the symbols, we
1215 build the caller's pointer vector. */
1219 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1224 hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
1225 if (elf_dynversym (abfd
) == 0)
1228 verhdr
= &elf_tdata (abfd
)->dynversym_hdr
;
1229 if ((elf_dynverdef (abfd
) != 0
1230 && elf_tdata (abfd
)->verdef
== NULL
)
1231 || (elf_dynverref (abfd
) != 0
1232 && elf_tdata (abfd
)->verref
== NULL
))
1234 if (!_bfd_elf_slurp_version_tables (abfd
, false))
1239 ebd
= get_elf_backend_data (abfd
);
1240 symcount
= hdr
->sh_size
/ sizeof (Elf_External_Sym
);
1242 sym
= symbase
= NULL
;
1245 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, symcount
, 0,
1247 if (isymbuf
== NULL
)
1250 if (_bfd_mul_overflow (symcount
, sizeof (elf_symbol_type
), &amt
))
1252 bfd_set_error (bfd_error_file_too_big
);
1255 symbase
= (elf_symbol_type
*) bfd_zalloc (abfd
, amt
);
1256 if (symbase
== (elf_symbol_type
*) NULL
)
1259 /* Read the raw ELF version symbol information. */
1261 && verhdr
->sh_size
/ sizeof (Elf_External_Versym
) != symcount
)
1264 /* xgettext:c-format */
1265 (_("%pB: version count (%" PRId64
")"
1266 " does not match symbol count (%ld)"),
1268 (int64_t) (verhdr
->sh_size
/ sizeof (Elf_External_Versym
)),
1271 /* Slurp in the symbols without the version information,
1272 since that is more helpful than just quitting. */
1278 if (bfd_seek (abfd
, verhdr
->sh_offset
, SEEK_SET
) != 0)
1280 xverbuf
= (Elf_External_Versym
*)
1281 _bfd_malloc_and_read (abfd
, verhdr
->sh_size
, verhdr
->sh_size
);
1282 if (xverbuf
== NULL
&& verhdr
->sh_size
!= 0)
1286 /* Skip first symbol, which is a null dummy. */
1290 isymend
= isymbuf
+ symcount
;
1291 for (isym
= isymbuf
+ 1, sym
= symbase
; isym
< isymend
; isym
++, sym
++)
1293 memcpy (&sym
->internal_elf_sym
, isym
, sizeof (Elf_Internal_Sym
));
1295 sym
->symbol
.the_bfd
= abfd
;
1296 sym
->symbol
.name
= bfd_elf_sym_name (abfd
, hdr
, isym
, NULL
);
1297 sym
->symbol
.value
= isym
->st_value
;
1299 if (isym
->st_shndx
== SHN_UNDEF
)
1301 sym
->symbol
.section
= bfd_und_section_ptr
;
1303 else if (isym
->st_shndx
== SHN_ABS
)
1305 sym
->symbol
.section
= bfd_abs_section_ptr
;
1307 else if (isym
->st_shndx
== SHN_COMMON
)
1309 sym
->symbol
.section
= bfd_com_section_ptr
;
1310 if ((abfd
->flags
& BFD_PLUGIN
) != 0)
1312 asection
*xc
= bfd_get_section_by_name (abfd
, "COMMON");
1316 flagword flags
= (SEC_ALLOC
| SEC_IS_COMMON
| SEC_KEEP
1318 xc
= bfd_make_section_with_flags (abfd
, "COMMON", flags
);
1322 sym
->symbol
.section
= xc
;
1324 /* Elf puts the alignment into the `value' field, and
1325 the size into the `size' field. BFD wants to see the
1326 size in the value field, and doesn't care (at the
1327 moment) about the alignment. */
1328 sym
->symbol
.value
= isym
->st_size
;
1333 = bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
1334 if (sym
->symbol
.section
== NULL
)
1336 /* This symbol is in a section for which we did not
1337 create a BFD section. Just use bfd_abs_section,
1338 although it is wrong. FIXME. Note - there is
1339 code in elf.c:swap_out_syms that calls
1340 symbol_section_index() in the elf backend for
1342 sym
->symbol
.section
= bfd_abs_section_ptr
;
1346 /* If this is a relocatable file, then the symbol value is
1347 already section relative. */
1348 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) != 0)
1349 sym
->symbol
.value
-= sym
->symbol
.section
->vma
;
1351 switch (ELF_ST_BIND (isym
->st_info
))
1354 sym
->symbol
.flags
|= BSF_LOCAL
;
1357 if (isym
->st_shndx
!= SHN_UNDEF
&& isym
->st_shndx
!= SHN_COMMON
)
1358 sym
->symbol
.flags
|= BSF_GLOBAL
;
1361 sym
->symbol
.flags
|= BSF_WEAK
;
1363 case STB_GNU_UNIQUE
:
1364 sym
->symbol
.flags
|= BSF_GNU_UNIQUE
;
1368 switch (ELF_ST_TYPE (isym
->st_info
))
1371 /* Mark the input section symbol as used since it may be
1372 used for relocation and section group.
1373 NB: BSF_SECTION_SYM_USED is ignored by linker and may
1374 be cleared by objcopy for non-relocatable inputs. */
1375 sym
->symbol
.flags
|= (BSF_SECTION_SYM
1377 | BSF_SECTION_SYM_USED
);
1380 sym
->symbol
.flags
|= BSF_FILE
| BSF_DEBUGGING
;
1383 sym
->symbol
.flags
|= BSF_FUNCTION
;
1386 /* FIXME: Do we have to put the size field into the value field
1387 as we do with symbols in SHN_COMMON sections (see above) ? */
1388 sym
->symbol
.flags
|= BSF_ELF_COMMON
;
1391 sym
->symbol
.flags
|= BSF_OBJECT
;
1394 sym
->symbol
.flags
|= BSF_THREAD_LOCAL
;
1397 sym
->symbol
.flags
|= BSF_RELC
;
1400 sym
->symbol
.flags
|= BSF_SRELC
;
1403 sym
->symbol
.flags
|= BSF_GNU_INDIRECT_FUNCTION
;
1408 sym
->symbol
.flags
|= BSF_DYNAMIC
;
1412 Elf_Internal_Versym iversym
;
1414 _bfd_elf_swap_versym_in (abfd
, xver
, &iversym
);
1415 sym
->version
= iversym
.vs_vers
;
1419 /* Do some backend-specific processing on this symbol. */
1420 if (ebd
->elf_backend_symbol_processing
)
1421 (*ebd
->elf_backend_symbol_processing
) (abfd
, &sym
->symbol
);
1425 /* Do some backend-specific processing on this symbol table. */
1426 if (ebd
->elf_backend_symbol_table_processing
)
1427 (*ebd
->elf_backend_symbol_table_processing
) (abfd
, symbase
, symcount
);
1429 /* We rely on the zalloc to clear out the final symbol entry. */
1431 symcount
= sym
- symbase
;
1433 /* Fill in the user's symbol pointer vector if needed. */
1441 *symptrs
++ = &sym
->symbol
;
1444 *symptrs
= 0; /* Final null pointer */
1448 if (hdr
->contents
!= (unsigned char *) isymbuf
)
1454 if (hdr
->contents
!= (unsigned char *) isymbuf
)
1459 /* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of
1463 elf_slurp_reloc_table_from_section (bfd
*abfd
,
1465 Elf_Internal_Shdr
*rel_hdr
,
1466 bfd_size_type reloc_count
,
1471 const struct elf_backend_data
* const ebd
= get_elf_backend_data (abfd
);
1472 void *allocated
= NULL
;
1473 bfd_byte
*native_relocs
;
1477 unsigned int symcount
;
1479 if (bfd_seek (abfd
, rel_hdr
->sh_offset
, SEEK_SET
) != 0)
1481 allocated
= _bfd_malloc_and_read (abfd
, rel_hdr
->sh_size
, rel_hdr
->sh_size
);
1482 if (allocated
== NULL
)
1485 native_relocs
= (bfd_byte
*) allocated
;
1487 entsize
= rel_hdr
->sh_entsize
;
1488 BFD_ASSERT (entsize
== sizeof (Elf_External_Rel
)
1489 || entsize
== sizeof (Elf_External_Rela
));
1492 symcount
= bfd_get_dynamic_symcount (abfd
);
1494 symcount
= bfd_get_symcount (abfd
);
1496 for (i
= 0, relent
= relents
;
1498 i
++, relent
++, native_relocs
+= entsize
)
1501 Elf_Internal_Rela rela
;
1503 if (entsize
== sizeof (Elf_External_Rela
))
1504 elf_swap_reloca_in (abfd
, native_relocs
, &rela
);
1506 elf_swap_reloc_in (abfd
, native_relocs
, &rela
);
1508 /* The address of an ELF reloc is section relative for an object
1509 file, and absolute for an executable file or shared library.
1510 The address of a normal BFD reloc is always section relative,
1511 and the address of a dynamic reloc is absolute.. */
1512 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0 || dynamic
)
1513 relent
->address
= rela
.r_offset
;
1515 relent
->address
= rela
.r_offset
- asect
->vma
;
1517 if (ELF_R_SYM (rela
.r_info
) == STN_UNDEF
)
1518 /* FIXME: This and the error case below mean that we have a
1519 symbol on relocs that is not elf_symbol_type. */
1520 relent
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
1521 else if (ELF_R_SYM (rela
.r_info
) > symcount
)
1524 /* xgettext:c-format */
1525 (_("%pB(%pA): relocation %d has invalid symbol index %ld"),
1526 abfd
, asect
, i
, (long) ELF_R_SYM (rela
.r_info
));
1527 bfd_set_error (bfd_error_bad_value
);
1528 relent
->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
1534 ps
= symbols
+ ELF_R_SYM (rela
.r_info
) - 1;
1536 relent
->sym_ptr_ptr
= ps
;
1539 relent
->addend
= rela
.r_addend
;
1541 if ((entsize
== sizeof (Elf_External_Rela
)
1542 && ebd
->elf_info_to_howto
!= NULL
)
1543 || ebd
->elf_info_to_howto_rel
== NULL
)
1544 res
= ebd
->elf_info_to_howto (abfd
, relent
, &rela
);
1546 res
= ebd
->elf_info_to_howto_rel (abfd
, relent
, &rela
);
1548 if (! res
|| relent
->howto
== NULL
)
1560 /* Read in and swap the external relocs. */
1563 elf_slurp_reloc_table (bfd
*abfd
,
1568 const struct elf_backend_data
* const bed
= get_elf_backend_data (abfd
);
1569 struct bfd_elf_section_data
* const d
= elf_section_data (asect
);
1570 Elf_Internal_Shdr
*rel_hdr
;
1571 Elf_Internal_Shdr
*rel_hdr2
;
1572 bfd_size_type reloc_count
;
1573 bfd_size_type reloc_count2
;
1577 if (asect
->relocation
!= NULL
)
1582 if ((asect
->flags
& SEC_RELOC
) == 0
1583 || asect
->reloc_count
== 0)
1586 rel_hdr
= d
->rel
.hdr
;
1587 reloc_count
= rel_hdr
? NUM_SHDR_ENTRIES (rel_hdr
) : 0;
1588 rel_hdr2
= d
->rela
.hdr
;
1589 reloc_count2
= rel_hdr2
? NUM_SHDR_ENTRIES (rel_hdr2
) : 0;
1591 /* PR 17512: file: 0b4f81b7. */
1592 if (asect
->reloc_count
!= reloc_count
+ reloc_count2
)
1594 BFD_ASSERT ((rel_hdr
&& asect
->rel_filepos
== rel_hdr
->sh_offset
)
1595 || (rel_hdr2
&& asect
->rel_filepos
== rel_hdr2
->sh_offset
));
1600 /* Note that ASECT->RELOC_COUNT tends not to be accurate in this
1601 case because relocations against this section may use the
1602 dynamic symbol table, and in that case bfd_section_from_shdr
1603 in elf.c does not update the RELOC_COUNT. */
1604 if (asect
->size
== 0)
1607 rel_hdr
= &d
->this_hdr
;
1608 reloc_count
= NUM_SHDR_ENTRIES (rel_hdr
);
1613 if (_bfd_mul_overflow (reloc_count
+ reloc_count2
, sizeof (arelent
), &amt
))
1615 bfd_set_error (bfd_error_file_too_big
);
1618 relents
= (arelent
*) bfd_alloc (abfd
, amt
);
1619 if (relents
== NULL
)
1623 && !elf_slurp_reloc_table_from_section (abfd
, asect
,
1624 rel_hdr
, reloc_count
,
1630 && !elf_slurp_reloc_table_from_section (abfd
, asect
,
1631 rel_hdr2
, reloc_count2
,
1632 relents
+ reloc_count
,
1636 if (!bed
->slurp_secondary_relocs (abfd
, asect
, symbols
, dynamic
))
1639 asect
->relocation
= relents
;
1645 elf_debug_section (int num
, Elf_Internal_Shdr
*hdr
)
1647 fprintf (stderr
, "\nSection#%d '%s' 0x%.8lx\n", num
,
1648 hdr
->bfd_section
!= NULL
? hdr
->bfd_section
->name
: "",
1651 "sh_name = %ld\tsh_type = %ld\tsh_flags = %ld\n",
1652 (long) hdr
->sh_name
,
1653 (long) hdr
->sh_type
,
1654 (long) hdr
->sh_flags
);
1656 "sh_addr = %ld\tsh_offset = %ld\tsh_size = %ld\n",
1657 (long) hdr
->sh_addr
,
1658 (long) hdr
->sh_offset
,
1659 (long) hdr
->sh_size
);
1661 "sh_link = %ld\tsh_info = %ld\tsh_addralign = %ld\n",
1662 (long) hdr
->sh_link
,
1663 (long) hdr
->sh_info
,
1664 (long) hdr
->sh_addralign
);
1665 fprintf (stderr
, "sh_entsize = %ld\n",
1666 (long) hdr
->sh_entsize
);
1673 elf_debug_file (Elf_Internal_Ehdr
*ehdrp
)
1675 fprintf (stderr
, "e_entry = 0x%.8lx\n", (long) ehdrp
->e_entry
);
1676 fprintf (stderr
, "e_phoff = %ld\n", (long) ehdrp
->e_phoff
);
1677 fprintf (stderr
, "e_phnum = %ld\n", (long) ehdrp
->e_phnum
);
1678 fprintf (stderr
, "e_phentsize = %ld\n", (long) ehdrp
->e_phentsize
);
1679 fprintf (stderr
, "e_shoff = %ld\n", (long) ehdrp
->e_shoff
);
1680 fprintf (stderr
, "e_shnum = %ld\n", (long) ehdrp
->e_shnum
);
1681 fprintf (stderr
, "e_shentsize = %ld\n", (long) ehdrp
->e_shentsize
);
1685 /* Create a new BFD as if by bfd_openr. Rather than opening a file,
1686 reconstruct an ELF file by reading the segments out of remote
1687 memory based on the ELF file header at EHDR_VMA and the ELF program
1688 headers it points to. If non-zero, SIZE is the known extent of the
1689 object. If not null, *LOADBASEP is filled in with the difference
1690 between the VMAs from which the segments were read, and the VMAs
1691 the file headers (and hence BFD's idea of each section's VMA) put
1694 The function TARGET_READ_MEMORY is called to copy LEN bytes from
1695 the remote memory at target address VMA into the local buffer at
1696 MYADDR; it should return zero on success or an `errno' code on
1697 failure. TEMPL must be a BFD for a target with the word size and
1698 byte order found in the remote memory. */
1701 NAME(_bfd_elf
,bfd_from_remote_memory
)
1703 bfd_vma ehdr_vma
/* Bytes. */,
1704 bfd_size_type size
/* Octets. */,
1705 bfd_vma
*loadbasep
/* Bytes. */,
1706 int (*target_read_memory
) (bfd_vma
, bfd_byte
*, bfd_size_type
))
1707 /* (Bytes , , octets ). */
1709 Elf_External_Ehdr x_ehdr
; /* Elf file header, external form */
1710 Elf_Internal_Ehdr i_ehdr
; /* Elf file header, internal form */
1711 Elf_External_Phdr
*x_phdrs
;
1712 Elf_Internal_Phdr
*i_phdrs
, *last_phdr
, *first_phdr
;
1714 struct bfd_in_memory
*bim
;
1718 bfd_vma high_offset
;
1720 bfd_vma loadbase
; /* Bytes. */
1722 unsigned int opb
= bfd_octets_per_byte (templ
, NULL
);
1724 /* Read in the ELF header in external format. */
1725 err
= target_read_memory (ehdr_vma
, (bfd_byte
*) &x_ehdr
, sizeof x_ehdr
);
1728 bfd_set_error (bfd_error_system_call
);
1733 /* Now check to see if we have a valid ELF file, and one that BFD can
1734 make use of. The magic number must match, the address size ('class')
1735 and byte-swapping must match our XVEC entry. */
1737 if (! elf_file_p (&x_ehdr
)
1738 || x_ehdr
.e_ident
[EI_VERSION
] != EV_CURRENT
1739 || x_ehdr
.e_ident
[EI_CLASS
] != ELFCLASS
)
1741 bfd_set_error (bfd_error_wrong_format
);
1745 /* Check that file's byte order matches xvec's */
1746 switch (x_ehdr
.e_ident
[EI_DATA
])
1748 case ELFDATA2MSB
: /* Big-endian */
1749 if (! bfd_header_big_endian (templ
))
1751 bfd_set_error (bfd_error_wrong_format
);
1755 case ELFDATA2LSB
: /* Little-endian */
1756 if (! bfd_header_little_endian (templ
))
1758 bfd_set_error (bfd_error_wrong_format
);
1762 case ELFDATANONE
: /* No data encoding specified */
1763 default: /* Unknown data encoding specified */
1764 bfd_set_error (bfd_error_wrong_format
);
1768 elf_swap_ehdr_in (templ
, &x_ehdr
, &i_ehdr
);
1770 /* The file header tells where to find the program headers.
1771 These are what we use to actually choose what to read. */
1773 if (i_ehdr
.e_phentsize
!= sizeof (Elf_External_Phdr
) || i_ehdr
.e_phnum
== 0)
1775 bfd_set_error (bfd_error_wrong_format
);
1779 if (_bfd_mul_overflow (i_ehdr
.e_phnum
,
1780 sizeof (*x_phdrs
) + sizeof (*i_phdrs
), &amt
))
1782 bfd_set_error (bfd_error_file_too_big
);
1785 x_phdrs
= (Elf_External_Phdr
*) bfd_malloc (amt
);
1786 if (x_phdrs
== NULL
)
1788 err
= target_read_memory (ehdr_vma
+ i_ehdr
.e_phoff
, (bfd_byte
*) x_phdrs
,
1789 i_ehdr
.e_phnum
* sizeof x_phdrs
[0]);
1793 bfd_set_error (bfd_error_system_call
);
1797 i_phdrs
= (Elf_Internal_Phdr
*) &x_phdrs
[i_ehdr
.e_phnum
];
1803 for (i
= 0; i
< i_ehdr
.e_phnum
; ++i
)
1805 elf_swap_phdr_in (templ
, &x_phdrs
[i
], &i_phdrs
[i
]);
1806 if (i_phdrs
[i
].p_type
== PT_LOAD
)
1808 bfd_vma segment_end
= i_phdrs
[i
].p_offset
+ i_phdrs
[i
].p_filesz
;
1810 if (segment_end
> high_offset
)
1812 high_offset
= segment_end
;
1813 last_phdr
= &i_phdrs
[i
];
1816 /* If this program header covers offset zero, where the file
1817 header sits, then we can figure out the loadbase. */
1818 if (first_phdr
== NULL
)
1820 bfd_vma p_offset
= i_phdrs
[i
].p_offset
; /* Octets. */
1821 bfd_vma p_vaddr
= i_phdrs
[i
].p_vaddr
; /* Octets. */
1823 if (i_phdrs
[i
].p_align
> 1)
1825 p_offset
&= -(i_phdrs
[i
].p_align
* opb
);
1826 p_vaddr
&= -(i_phdrs
[i
].p_align
* opb
);
1830 loadbase
= ehdr_vma
- p_vaddr
/ opb
;
1831 first_phdr
= &i_phdrs
[i
];
1836 if (high_offset
== 0)
1838 /* There were no PT_LOAD segments, so we don't have anything to read. */
1840 bfd_set_error (bfd_error_wrong_format
);
1845 if (i_ehdr
.e_shoff
!= 0 && i_ehdr
.e_shnum
!= 0 && i_ehdr
.e_shentsize
!= 0)
1847 shdr_end
= i_ehdr
.e_shoff
+ i_ehdr
.e_shnum
* i_ehdr
.e_shentsize
;
1849 if (last_phdr
->p_filesz
!= last_phdr
->p_memsz
)
1851 /* If the last PT_LOAD header has a bss area then ld.so will
1852 have cleared anything past p_filesz, zapping the section
1855 else if (size
>= shdr_end
)
1859 bfd_vma page_size
= get_elf_backend_data (templ
)->minpagesize
;
1860 bfd_vma segment_end
= last_phdr
->p_offset
+ last_phdr
->p_filesz
;
1862 /* Assume we loaded full pages, allowing us to sometimes see
1864 if (page_size
> 1 && shdr_end
> segment_end
)
1866 bfd_vma page_end
= (segment_end
+ page_size
- 1) & -page_size
;
1868 if (page_end
>= shdr_end
)
1869 /* Whee, section headers covered. */
1870 high_offset
= shdr_end
;
1875 /* Now we know the size of the whole image we want read in. */
1876 contents
= (bfd_byte
*) bfd_zmalloc (high_offset
);
1877 if (contents
== NULL
)
1883 for (i
= 0; i
< i_ehdr
.e_phnum
; ++i
)
1884 if (i_phdrs
[i
].p_type
== PT_LOAD
)
1886 bfd_vma start
= i_phdrs
[i
].p_offset
; /* Octets. */
1887 bfd_vma end
= start
+ i_phdrs
[i
].p_filesz
; /* Octets. */
1888 bfd_vma vaddr
= i_phdrs
[i
].p_vaddr
; /* Octets. */
1890 /* Extend the beginning of the first pt_load to cover file
1891 header and program headers, if we proved earlier that its
1892 aligned offset is 0. */
1893 if (first_phdr
== &i_phdrs
[i
])
1898 /* Extend the end of the last pt_load to cover section headers. */
1899 if (last_phdr
== &i_phdrs
[i
])
1901 err
= target_read_memory (loadbase
+ vaddr
/ opb
,
1902 contents
+ start
, end
- start
);
1907 bfd_set_error (bfd_error_system_call
);
1914 /* If the segments visible in memory didn't include the section headers,
1915 then clear them from the file header. */
1916 if (high_offset
< shdr_end
)
1918 memset (&x_ehdr
.e_shoff
, 0, sizeof x_ehdr
.e_shoff
);
1919 memset (&x_ehdr
.e_shnum
, 0, sizeof x_ehdr
.e_shnum
);
1920 memset (&x_ehdr
.e_shstrndx
, 0, sizeof x_ehdr
.e_shstrndx
);
1923 /* This will normally have been in the first PT_LOAD segment. But it
1924 conceivably could be missing, and we might have just changed it. */
1925 memcpy (contents
, &x_ehdr
, sizeof x_ehdr
);
1927 /* Now we have a memory image of the ELF file contents. Make a BFD. */
1928 bim
= (struct bfd_in_memory
*) bfd_malloc (sizeof (struct bfd_in_memory
));
1934 nbfd
= _bfd_new_bfd ();
1936 || !bfd_set_filename (nbfd
, "<in-memory>"))
1942 nbfd
->xvec
= templ
->xvec
;
1943 bim
->size
= high_offset
;
1944 bim
->buffer
= contents
;
1945 nbfd
->iostream
= bim
;
1946 nbfd
->flags
= BFD_IN_MEMORY
;
1947 nbfd
->iovec
= &_bfd_memory_iovec
;
1949 nbfd
->direction
= read_direction
;
1950 nbfd
->mtime
= time (NULL
);
1951 nbfd
->mtime_set
= true;
1954 *loadbasep
= loadbase
;
1958 /* Function for ELF_R_INFO. */
1961 NAME(elf
,r_info
) (bfd_vma sym
, bfd_vma type
)
1963 return ELF_R_INFO (sym
, type
);
1966 /* Function for ELF_R_SYM. */
1969 NAME(elf
,r_sym
) (bfd_vma r_info
)
1971 return ELF_R_SYM (r_info
);
1974 #include "elfcore.h"
1976 /* Size-dependent data and functions. */
1977 const struct elf_size_info
NAME(_bfd_elf
,size_info
) = {
1978 sizeof (Elf_External_Ehdr
),
1979 sizeof (Elf_External_Phdr
),
1980 sizeof (Elf_External_Shdr
),
1981 sizeof (Elf_External_Rel
),
1982 sizeof (Elf_External_Rela
),
1983 sizeof (Elf_External_Sym
),
1984 sizeof (Elf_External_Dyn
),
1985 sizeof (Elf_External_Note
),
1988 ARCH_SIZE
, LOG_FILE_ALIGN
,
1989 ELFCLASS
, EV_CURRENT
,
1990 elf_write_out_phdrs
,
1991 elf_write_shdrs_and_ehdr
,
1992 elf_checksum_contents
,
1995 elf_swap_symbol_out
,
1996 elf_slurp_reloc_table
,
1997 elf_slurp_symbol_table
,