C++ (Cpp) syms_load_strings Examples

Example #1

File: elf32.c Project: poelzi/mspdebug

int elf32_syms(FILE *in, stab_t stab)
{
	struct elf32_info info;
	Elf32_Shdr *s;
	int ret = 0;

	if (read_all(&info, in) < 0)
		return -1;

	s = find_shdr(&info, SHT_SYMTAB);
	if (!s) {
		fprintf(stderr, "elf32: no symbol table\n");
		return -1;
	}

	if (s->sh_link <= 0 || s->sh_link >= info.file_ehdr.e_shnum) {
		fprintf(stderr, "elf32: no string table\n");
		return -1;
	}

	if (syms_load_strings(&info, in, &info.file_shdrs[s->sh_link]) < 0 ||
	    syms_load_syms(&info, in, s, stab) < 0)
		ret = -1;

	if (info.string_tab)
		free(info.string_tab);

	return ret;
}

Example #2

File: elf32.c Project: sbytnar/mspdebug-patches

static int syms_load_syms(struct elf32_info *info, FILE *in,
			  GElf_Shdr *s)
{
	const char sym_debug = 0;
	int number = 0;
	int added = 0;
	char *name;

	/* now loop through the symbol table and print it*/
#if 1
	/* Good: This works. */
	Elf32_Sym *esym;
	Elf32_Sym *lastsym;

	esym = (Elf32_Sym*) info->string_data->d_buf;
	lastsym = (Elf32_Sym*) ((char*)info->string_data->d_buf
			+ info->string_data->d_size);
	for (; esym && (esym < lastsym); esym++) {
#else
	/* BAD: For some reason, st_value = 0 for all symbols? */
	GElf_Sym isym;
	GElf_Sym *esym;

	while ((esym = gelf_getsym(info->string_data, number, &isym))) {
#endif
		int st;
		st = ELF32_ST_TYPE(esym->st_info);
		name = elf_strptr(info->elf, s->sh_link, (size_t)esym->st_name);
		if (sym_debug) {
			printc("[%3d] name:%16s st:%d sz:%d info:%d other:%d value:%d ",
				number,
				name ? name : "<NULL>",
				st,
				esym->st_size,
				esym->st_info,
				esym->st_other,
				esym->st_value);
		}
		if ((name != NULL && name[0] != 0) &&
				(st == STT_OBJECT || st == STT_FUNC ||
				st == STT_SECTION || st == STT_COMMON ||
				st == STT_TLS)) {
			if (sym_debug) {
				printc("stab_set(%s, %d)\n", name, esym->st_value);
			}
			if (stab_set(name, esym->st_value) < 0) {
				printc_err("elf32: stab_set #%d failed\n", number);
				return -1;
			}
			added++;
		} else {
			if (sym_debug) {
				printc("was ignored\n");
			}
		}
		if (name == NULL) {
			printc_err("elf32: null symbol name %s\n",
				elf_errmsg(elf_errno()));
			exit(-1);
		}
		number++;
	}
	printc("load_syms found %d symbols, added %d\n", number, added);

	return 0;
}

int elf32_syms(FILE *in)
{
	struct elf32_info info;
	GElf_Shdr *s;
	int ret = 0;

	if (read_all(&info, in) < 0)
		return -1;

	s = find_shdr(&info, SHT_SYMTAB);
	if (!s) {
		printc_err("elf32: no symbol table\n");
		return -1;
	}

	if (s->sh_link <= 0 || s->sh_link >= info.file_ehdr.e_shnum) {
		printc_err("elf32: no string table\n");
		return -1;
	}

	if (syms_load_strings(&info, in, &info.file_shdrs[s->sh_link]) < 0 ||
	    syms_load_syms(&info, in, s) < 0)
		ret = -1;

	return ret;
}