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109 lines
4.5 KiB
109 lines
4.5 KiB
#include "ft_re.h"
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voi display_32_section_header(t_elf32 *nm, int i) {
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ft_printf(
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" [Nr] Name Type Addr Off Size "
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" "
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"ES Flg Lk Inf Al\n");
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ft_printf(" [%2d] ", i);
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ft_printf("%-18s", nm->string_table + nm->shdr[i].sh_name);
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ft_printf("%-8s", get_section_type(nm->shdr[i].sh_type));
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ft_printf("%08x ", nm->shdr[i].sh_addr);
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ft_printf("%06x ", nm->shdr[i].sh_offset);
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ft_printf("%06x ", nm->shdr[i].sh_size);
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ft_printf("%02x ", nm->shdr[i].sh_entsize);
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ft_printf("%3s ", get_section_flags(nm->shdr[i].sh_flags));
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ft_printf("%02x ", nm->shdr[i].sh_link);
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ft_printf("%02x ", nm->shdr[i].sh_info);
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ft_printf("%02x\n", nm->shdr[i].sh_addralign);
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}
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void display_32_header(t_elf32 *nm) {
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ft_printf("ELF Header:\n");
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ft_printf(" Magic: ");
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for (int i = 0; i < EI_NIDENT; i++)ft_printf("%02x ", nm->ehdr->e_ident[i]);
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ft_printf("\n Class: ELF32\n");
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ft_printf(
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" Data: 2's complement, little endian\n");
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ft_printf(" Version: 1 (current)\n");
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ft_printf(" OS/ABI: UNIX - System V\n");
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ft_printf(" ABI Version: 0\n");
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ft_printf(" Version: 0x%08x\n",
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nm->ehdr->e_version);
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ft_printf(" Entry point address: 0x%08x\n",
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nm->ehdr->e_entry);
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ft_printf(" Start of program headers: %d (bytes into file)\n",
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nm->ehdr->e_phoff);
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ft_printf(" Start of section headers: %d (bytes into file)\n",
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nm->ehdr->e_shoff);
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ft_printf(" Flags: 0x%08x\n", nm->ehdr->e_flags);
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ft_printf(" Size of this header: %d (bytes)\n",
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nm->ehdr->e_ehsize);
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ft_printf(" Size of program headers: %d (bytes)\n",
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nm->ehdr->e_phentsize);
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ft_printf(" Number of program headers: %d\n", nm->ehdr->e_phnum);
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ft_printf(" Size of section headers: %d (bytes)\n",
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nm->ehdr->e_shentsize);
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ft_printf(" Number of section headers: %d\n", nm->ehdr->e_shnum);
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ft_printf(" Section header string table index: %d\n", nm->ehdr->e_shstrndx);
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}
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int print_32_symtab(t_elf32 *nm) {
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int sym_num = nm->symtab_end - nm->symtab;
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ft_printf("Symbol table '%s' contains %d entries:\n", nm->file, sym_num);
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ft_printf("Contents of the (%s) section: \n",
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nm->string_table + nm->shdr[nm->ehdr->e_shstrndx].sh_name);
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ft_printf(
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"| Num: |Value |Size |Type |Bind |Vis "
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" |Ndx0x |Ndx "
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" |shndxty |shndxfl|nmChar |Name\n");
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for (int i = 0; i < sym_num; i++) {
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int id = nm->opts.p == 0 ? nm->ordered_sym_ids[i] : i;
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ft_printf("| %4d: ", id);
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ft_printf("|%8x ", nm->symtab[id].st_value);
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ft_printf("|%8x ", nm->symtab[id].st_size);
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ft_printf("|%-6s ", get_sym_type(ELF32_ST_TYPE(nm->symtab[id].st_info)));
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ft_printf("|%-6s ", get_sym_bind(ELF32_ST_BIND(nm->symtab[id].st_info)));
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ft_printf("|%-7s ",
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get_sym_vis(ELF32_ST_VISIBILITY(nm->symtab[id].st_other)));
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ft_printf("|%5d", nm->symtab[id].st_shndx);
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ft_printf("|%7s ", get_sym_shndx(nm->symtab[id].st_shndx));
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if (nm->symtab[id].st_shndx < nm->ehdr->e_shnum) {
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ft_printf("|%8s",
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get_sh_type(nm->shdr[nm->symtab[id].st_shndx].sh_type));
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ft_printf("|%8s",
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get_sh_flag(nm->shdr[nm->symtab[id].st_shndx].sh_flags));
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} else {
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ft_printf("|%8c", ' ');
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ft_printf("|%8c", ' ');
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}
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ft_printf("|%6c ", nm->sym_types[id]);
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ft_printf("|%s\n", nm->sym_names[id]);
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}
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return 1;
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}
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int ft_re32(char *filename, int filesize, char *file, t_opts opts) {
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t_elf32 nm;
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nm.file = filename;
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nm.size = filesize;
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nm.ptr = file;
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nm.opts = opts;
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nm.ehdr = (Elf32_Ehdr *)nm.ptr;
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nm.shdr = (Elf32_Shdr *)(nm.ptr + nm.ehdr->e_shoff);
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nm.name = malloc(nm.ehdr->e_shnum * sizeof(char *));
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// check if file is complete
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if (nm.ehdr->e_shoff + nm.ehdr->e_shnum * nm.ehdr->e_shentsize > nm.size) {
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ft_fprintf(stderr, "bfd plugin: %s: file too short\n", nm.file);
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return -1;
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}
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for (int i = 0; i < nm.ehdr->e_shnum; i++)
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nm.name[i] = &nm.string_table[nm.shdr[i].sh_name];
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display_32_header(&nm);
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//parse_32_symtab(&nm);
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return 0;
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}
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