15 #include <elf.h>
439 	/* Is this a valid ELF file? */  in parse_elf()
444 		/* Not an ELF file - silently ignore it */  in parse_elf()
459 	/* Fix endianness in ELF header */  in parse_elf()
721 static const char *sym_name(struct elf_info *elf, Elf_Sym *sym)  in sym_name()  argument
723 	return sym ? elf->strtab + sym->st_name : "";  in sym_name()
784 static void check_section(struct module *mod, struct elf_info *elf,  in check_section()  argument
787 	const char *sec = sech_name(elf, sechdr);  in check_section()
999 static Elf_Sym *find_fromsym(struct elf_info *elf, Elf_Addr addr,  in find_fromsym()  argument
1002 	return symsearch_find_nearest(elf, addr, secndx, false, ~0);  in find_fromsym()
1005 static Elf_Sym *find_tosym(struct elf_info *elf, Elf_Addr addr, Elf_Sym *sym)  in find_tosym()  argument
1010 	if (is_valid_name(elf, sym))  in find_tosym()
1017 	new_sym = symsearch_find_nearest(elf, addr, get_secindex(elf, sym),  in find_tosym()
1022 static bool is_executable_section(struct elf_info *elf, unsigned int secndx)  in is_executable_section()  argument
1024 	if (secndx >= elf->num_sections)  in is_executable_section()
1027 	return (elf->sechdrs[secndx].sh_flags & SHF_EXECINSTR) != 0;  in is_executable_section()
1030 static void default_mismatch_handler(struct module *mod, struct elf_info *elf,  in default_mismatch_handler()  argument
1041 	from = find_fromsym(elf, faddr, fsecndx);  in default_mismatch_handler()
1042 	fromsym = sym_name(elf, from);  in default_mismatch_handler()
1044 	tsym = find_tosym(elf, taddr, tsym);  in default_mismatch_handler()
1045 	tosym = sym_name(elf, tsym);  in default_mismatch_handler()
1073 		else if (is_executable_section(elf, get_secindex(elf, tsym)))  in default_mismatch_handler()
1088 static void check_export_symbol(struct module *mod, struct elf_info *elf,  in check_export_symbol()  argument
1098 	label = find_fromsym(elf, faddr, elf->export_symbol_secndx);  in check_export_symbol()
1099 	label_name = sym_name(elf, label);  in check_export_symbol()
1114 	name = sym_name(elf, sym);  in check_export_symbol()
1121 	data = sym_get_data(elf, label);	/* license */  in check_export_symbol()
1145 	if (elf->hdr->e_ident[EI_CLASS] == ELFCLASS64 &&  in check_export_symbol()
1146 	    elf->hdr->e_machine == EM_PARISC &&  in check_export_symbol()
1158 static void check_section_mismatch(struct module *mod, struct elf_info *elf,  in check_section_mismatch()  argument
1163 	const char *tosec = sec_name(elf, get_secindex(elf, sym));  in check_section_mismatch()
1166 	if (module_enabled && elf->export_symbol_secndx == fsecndx) {  in check_section_mismatch()
1167 		check_export_symbol(mod, elf, faddr, tosec, sym);  in check_section_mismatch()
1175 	default_mismatch_handler(mod, elf, mismatch, sym,  in check_section_mismatch()
1323 static void get_rel_type_and_sym(struct elf_info *elf, uint64_t r_info,  in get_rel_type_and_sym()  argument
1334 	bool is_64bit = (elf->hdr->e_ident[EI_CLASS] == ELFCLASS64);  in get_rel_type_and_sym()
1336 	if (elf->hdr->e_machine == EM_MIPS && is_64bit) {  in get_rel_type_and_sym()
1353 static void section_rela(struct module *mod, struct elf_info *elf,  in section_rela()  argument
1365 		get_rel_type_and_sym(elf, rela->r_info, &r_type, &r_sym);  in section_rela()
1367 		tsym = elf->symtab_start + r_sym;  in section_rela()
1370 		switch (elf->hdr->e_machine) {  in section_rela()
1390 		check_section_mismatch(mod, elf, tsym,  in section_rela()
1395 static void section_rel(struct module *mod, struct elf_info *elf,  in section_rel()  argument
1408 		get_rel_type_and_sym(elf, rel->r_info, &r_type, &r_sym);  in section_rel()
1410 		loc = sym_get_data_by_offset(elf, fsecndx, r_offset);  in section_rel()
1411 		tsym = elf->symtab_start + r_sym;  in section_rel()
1413 		switch (elf->hdr->e_machine) {  in section_rel()
1427 		check_section_mismatch(mod, elf, tsym,  in section_rel()
1444 static void check_sec_ref(struct module *mod, struct elf_info *elf)  in check_sec_ref()  argument
1449 	for (i = 0; i < elf->num_sections; i++) {  in check_sec_ref()
1450 		Elf_Shdr *sechdr = &elf->sechdrs[i];  in check_sec_ref()
1452 		check_section(mod, elf, sechdr);  in check_sec_ref()
1457 			const char *secname = sec_name(elf, secndx);  in check_sec_ref()
1464 			start = sym_get_data_by_offset(elf, i, 0);  in check_sec_ref()
1468 				section_rela(mod, elf, secndx, secname,  in check_sec_ref()
1471 				section_rel(mod, elf, secndx, secname,  in check_sec_ref()
1506 	 * When CONFIG_LTO_CLANG_THIN_DIST=y, the ELF is *.thinlto-native.o  in extract_crcs_for_object()