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wip: symbols

This commit is contained in:
gbrochar 2024-03-26 17:29:36 +01:00
parent dac5ec5675
commit 65a9713d15
1 changed files with 40 additions and 4 deletions
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44
src/nm.c
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@ -5,6 +5,18 @@ int nm32(t_mapped_file mapped_file) {
return FT_NM_SUCCESS;
}
char *get_sym_char(Elf64_Sym sym) {
if (sym.st_shndx == SHN_ABS) {
if (ELF64_ST_BIND(sym.st_info) == STB_LOCAL) {
return ("a");
}
else if (ELF64_ST_BIND(sym.st_info) == STB_GLOBAL) {
return ("A");
}
}
return ("T");
}
int nm64(t_mapped_file mapped_file) {
Elf64_Ehdr header;
if (get_header64(mapped_file, &header) == FT_NM_FAILURE) {
@ -38,23 +50,47 @@ int nm64(t_mapped_file mapped_file) {
ft_putstr(str);
ft_putchar('\n');
}
*/
*/
uint64_t addr = header.e_shoff + header.e_shentsize * header.e_shstrndx;
ft_printf("sX", "addr: ", addr);
//ft_printf("sX", "addr: ", addr);
Elf64_Shdr shstrtb;
ft_memcpy(&shstrtb, mapped_file.ptr + addr, header.e_shentsize);
ft_printf("sX", "offset: ", shstrtb.sh_offset);
//ft_printf("sX", "offset: ", shstrtb.sh_offset);
for (int i = 0; i < header.e_shnum; i++) {
uint64_t addr = header.e_shoff + header.e_shentsize * i;
Elf64_Shdr sh;
ft_memcpy(&sh, mapped_file.ptr + addr, header.e_shentsize);
if (sh.sh_type == SHT_SYMTAB) {
uint64_t addr2 = header.e_shoff + header.e_shentsize * sh.sh_link;
Elf64_Shdr strtab;
ft_memcpy(&strtab, mapped_file.ptr + addr2, header.e_shentsize);
ft_printf("sdsds", "SYMTAB Size: ", sh.sh_size, " Entity size: ", sh.sh_entsize, "\n");
for (uint64_t j = 0; j < sh.sh_size; j += sh.sh_entsize) {
Elf64_Sym sym;
ft_memcpy(&sym, mapped_file.ptr + sh.sh_offset + j, sh.sh_entsize);
char *str = ft_strdup(mapped_file.ptr + strtab.sh_offset + sym.st_name);
//if (str[ft_strlen(str) - 1] == 'c') {
printf("st_name: %d\n", sym.st_name);
printf("st_info: %d\n", sym.st_info);
printf("st_other: %d\n", sym.st_other);
printf("st_shndx: %d\n", sym.st_shndx);
printf("st_value: %ld\n", sym.st_value);
printf("st_size: %ld\n", sym.st_size);
//}
if (sym.st_value) {
ft_printf("X s ss", sym.st_value, get_sym_char(sym), str, "\n");
} else {
ft_printf("P s ss", get_sym_char(sym), mapped_file.ptr + strtab.sh_offset + sym.st_name, "\n");
}
}
}
/*ft_printf("X", sh.sh_offset);
ft_putchar('\n');
ft_printf("X", sh.sh_name);
ft_putchar('\n');*/
char *str = ft_strdup(mapped_file.ptr + shstrtb.sh_offset + sh.sh_name);
//ft_putstr(str);
ft_printf("x x ss", sh.sh_name, sh.sh_offset, str, "\n");
ft_printf("x x x ss", sh.sh_name, sh.sh_offset, addr, str, "\n");
free(str);
//ft_putchar('\n');
}