From 65a9713d15865bb7e46c6362eb7bca657339c19e Mon Sep 17 00:00:00 2001
From: gbrochar <gaetanbrochard@protonmail.com>
Date: Tue, 26 Mar 2024 17:29:36 +0100
Subject: [PATCH] wip: symbols

---
 src/nm.c | 44 ++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 40 insertions(+), 4 deletions(-)

diff --git a/src/nm.c b/src/nm.c
index 3c49a45..8c0502a 100644
--- a/src/nm.c
+++ b/src/nm.c
@@ -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');
 	}