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print symbol names

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This commit is contained in:
Gregory 2019-06-06 00:35:44 +03:00
parent 991cddad53
commit ec4151422d
1 changed files with 34 additions and 9 deletions
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43
src/main.c
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@ -42,21 +42,46 @@ int main(int argc, char **argv)
ft_putstr("sorry, only 64bit elf binaries for now"); ft_putstr("sorry, only 64bit elf binaries for now");
return (1); return (1);
} }
Elf64_Shdr *section_array; Elf64_Shdr *section_table;
Elf64_Shdr *strings_table; Elf64_Shdr *section_names;
Elf64_Shdr *section_entity; Elf64_Shdr *section_entity;
Elf64_Sym *symbol_table;
char *symbol_names;
int symbol_table_size;
int symbol_table_entity_size;
section_array = (Elf64_Shdr *)(file + elf_header->e_shoff); section_table = (Elf64_Shdr *)(file + elf_header->e_shoff);
strings_table = section_array + elf_header->e_shstrndx; section_names = section_table + elf_header->e_shstrndx;
char *string; char *string;
int i = 0; int i = 0;
while (i < elf_header->e_shnum) while (i < elf_header->e_shnum)
{ {
section_entity = section_array + i; section_entity = section_table + i;
string = (char *)(file + strings_table->sh_offset + section_entity->sh_name); string = file + section_names->sh_offset + section_entity->sh_name;
printf("entity name: %s\n", string); printf("%d entity name: %s type: %d\n", i, string, section_entity->sh_type);
if (section_entity->sh_type == SHT_SYMTAB)
{
printf("found symbol table! index: %d\n", i);
symbol_table = (Elf64_Sym *)(file + section_entity->sh_offset);
symbol_table_size = section_entity->sh_size;
symbol_table_entity_size = section_entity->sh_entsize;
}
if (section_entity->sh_type == SHT_STRTAB && i != elf_header->e_shstrndx)
{
printf("found symbol names! index: %d\n", i);
symbol_names = file + section_entity->sh_offset;
}
i++; i++;
} }
ft_putstr("symbol table\n"); int j = 0;
Elf64_Sym *symbol;
while (symbol_table_size > 0)
{
symbol = symbol_table + j;
string = symbol_names + symbol->st_name;
printf("%d: %s\n", j, string);
symbol_table_size -= symbol_table_entity_size;
j++;
}
return(0); return(0);
} }