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elf-parser/elf-parser-main.c at master · wangloo/elf-parser · GitHub
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/
elf-parser
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elf-parser-main.c
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elf-parser-main.c
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#include
<elf-parser.h>
/* Main entry point of elf-parser */
int32_t
main
(
int32_t
argc
,
char
*
argv
[])
{
int32_t
fd
;
Elf32_Ehdr
eh
;
/* elf-header is fixed size */
if
(
argc
!=
2
) {
printf
(
"Usage: elf-parser <ELF-file>\n"
);
return
0
;
}
fd
=
open
(
argv
[
1
],
O_RDONLY
|
O_SYNC
);
if
(
fd
<
0
) {
printf
(
"Error %d Unable to open %s\n"
,
fd
,
argv
[
1
]);
return
0
;
}
/* ELF header : at start of file */
read_elf_header
(
fd
,
&
eh
);
if
(!
is_ELF
(
eh
)) {
return
0
;
}
if
(
is64Bit
(
eh
)){
Elf64_Ehdr
eh64
;
/* elf-header is fixed size */
Elf64_Shdr
*
sh_tbl
;
/* section-header table is variable size */
read_elf_header64
(
fd
,
&
eh64
);
print_elf_header64
(
eh64
);
/* Section header table : */
sh_tbl
=
malloc
(
eh64
.
e_shentsize
*
eh64
.
e_shnum
);
if
(!
sh_tbl
) {
printf
(
"Failed to allocate %d bytes\n"
,
(
eh64
.
e_shentsize
*
eh64
.
e_shnum
));
}
read_section_header_table64
(
fd
,
eh64
,
sh_tbl
);
print_section_headers64
(
fd
,
eh64
,
sh_tbl
);
/* Symbol tables :
* sh_tbl[i].sh_type
* |`- SHT_SYMTAB
* `- SHT_DYNSYM
*/
print_symbols64
(
fd
,
eh64
,
sh_tbl
);
/* Save .text section as text.S
*/
save_text_section64
(
fd
,
eh64
,
sh_tbl
);
/* Disassemble .text section
* Logs asm instructions to stdout
* Currently supports ARMv7
*/
disassemble64
(
fd
,
eh64
,
sh_tbl
);
}
else
{
Elf32_Shdr
*
sh_tbl
;
/* section-header table is variable size */
print_elf_header
(
eh
);
/* Section header table : */
sh_tbl
=
malloc
(
eh
.
e_shentsize
*
eh
.
e_shnum
);
if
(!
sh_tbl
) {
printf
(
"Failed to allocate %d bytes\n"
,
(
eh
.
e_shentsize
*
eh
.
e_shnum
));
}
read_section_header_table
(
fd
,
eh
,
sh_tbl
);
print_section_headers
(
fd
,
eh
,
sh_tbl
);
/* Symbol tables :
* sh_tbl[i].sh_type
* |`- SHT_SYMTAB
* `- SHT_DYNSYM
*/
print_symbols
(
fd
,
eh
,
sh_tbl
);
/* Save .text section as text.S
*/
save_text_section
(
fd
,
eh
,
sh_tbl
);
/* Disassemble .text section
* Logs asm instructions to stdout
* Currently supports ARMv7
*/
disassemble
(
fd
,
eh
,
sh_tbl
);
}
return
0
;
}
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