32 #define __elf_table(name)	(elf->name##_hash)
33 #define __elf_bits(name)	(elf->name##_bits)
132 struct section *find_section_by_name(const struct elf *elf, const char *name)  in find_section_by_name()  argument
144 static struct section *find_section_by_index(struct elf *elf,  in find_section_by_index()  argument
157 static struct symbol *find_symbol_by_index(struct elf *elf, unsigned int idx)  in find_symbol_by_index()  argument
256 struct symbol *find_symbol_by_name(const struct elf *elf, const char *name)  in find_symbol_by_name()  argument
268 struct reloc *find_reloc_by_dest_range(const struct elf *elf, struct section *sec,  in find_reloc_by_dest_range()  argument
298 struct reloc *find_reloc_by_dest(const struct elf *elf, struct section *sec, unsigned long offset)  in find_reloc_by_dest()  argument
300 	return find_reloc_by_dest_range(elf, sec, offset, 1);  in find_reloc_by_dest()
308 static int read_sections(struct elf *elf)  in read_sections()  argument
315 	if (elf_getshdrnum(elf->elf, &sections_nr)) {  in read_sections()
320 	if (elf_getshdrstrndx(elf->elf, &shstrndx)) {  in read_sections()
329 	elf->section_data = calloc(sections_nr, sizeof(*sec));  in read_sections()
330 	if (!elf->section_data) {  in read_sections()
335 		sec = &elf->section_data[i];  in read_sections()
339 		s = elf_getscn(elf->elf, i);  in read_sections()
352 		sec->name = elf_strptr(elf->elf, shstrndx, sec->sh.sh_name);  in read_sections()
372 		list_add_tail(&sec->list, &elf->sections);  in read_sections()
377 			elf->num_relocs += sec_num_entries(sec);  in read_sections()
382 		printf("section_bits: %d\n", elf->section_bits);  in read_sections()
386 	if (elf_nextscn(elf->elf, s)) {  in read_sections()
394 static void elf_add_symbol(struct elf *elf, struct symbol *sym)  in elf_add_symbol()  argument
407 		elf->num_files++;  in elf_add_symbol()
435 static int read_symbols(struct elf *elf)  in read_symbols()  argument
444 	symtab = find_section_by_name(elf, ".symtab");  in read_symbols()
446 		symtab_shndx = find_section_by_name(elf, ".symtab_shndx");  in read_symbols()
465 	elf->symbol_data = calloc(symbols_nr, sizeof(*sym));  in read_symbols()
466 	if (!elf->symbol_data) {  in read_symbols()
471 		sym = &elf->symbol_data[i];  in read_symbols()
481 		sym->name = elf_strptr(elf->elf, symtab->sh.sh_link,  in read_symbols()
494 			sym->sec = find_section_by_index(elf, shndx);  in read_symbols()
505 			sym->sec = find_section_by_index(elf, 0);  in read_symbols()
507 		elf_add_symbol(elf, sym);  in read_symbols()
512 		printf("symbol_bits: %d\n", elf->symbol_bits);  in read_symbols()
516 	list_for_each_entry(sec, &elf->sections, list) {  in read_symbols()
542 			pfunc = find_symbol_by_name(elf, pname);  in read_symbols()
579 static int elf_update_sym_relocs(struct elf *elf, struct symbol *sym)  in elf_update_sym_relocs()  argument
584 		set_reloc_sym(elf, reloc, reloc->sym->idx);  in elf_update_sym_relocs()
597 static int elf_update_symbol(struct elf *elf, struct section *symtab,  in elf_update_symbol()  argument
611 	s = elf_getscn(elf->elf, symtab->idx);  in elf_update_symbol()
618 		t = elf_getscn(elf->elf, symtab_shndx->idx);  in elf_update_symbol()
663 			mark_sec_changed(elf, symtab, true);  in elf_update_symbol()
678 				mark_sec_changed(elf, symtab_shndx, true);  in elf_update_symbol()
728 __elf_create_symbol(struct elf *elf, struct symbol *sym)  in __elf_create_symbol()  argument
734 	symtab = find_section_by_name(elf, ".symtab");  in __elf_create_symbol()
736 		symtab_shndx = find_section_by_name(elf, ".symtab_shndx");  in __elf_create_symbol()
752 	old = find_symbol_by_index(elf, first_non_local);  in __elf_create_symbol()
759 		if (elf_update_symbol(elf, symtab, symtab_shndx, old)) {  in __elf_create_symbol()
764 		if (elf_update_sym_relocs(elf, old))  in __elf_create_symbol()
777 	if (elf_update_symbol(elf, symtab, symtab_shndx, sym)) {  in __elf_create_symbol()
783 	mark_sec_changed(elf, symtab, true);  in __elf_create_symbol()
787 		mark_sec_changed(elf, symtab_shndx, true);  in __elf_create_symbol()
794 elf_create_section_symbol(struct elf *elf, struct section *sec)  in elf_create_section_symbol()  argument
812 	sym = __elf_create_symbol(elf, sym);  in elf_create_section_symbol()
814 		elf_add_symbol(elf, sym);  in elf_create_section_symbol()
819 static int elf_add_string(struct elf *elf, struct section *strtab, char *str);
822 elf_create_prefix_symbol(struct elf *elf, struct symbol *orig, long size)  in elf_create_prefix_symbol()  argument
838 	sym->sym.st_name = elf_add_string(elf, NULL, name);  in elf_create_prefix_symbol()
843 	sym = __elf_create_symbol(elf, sym);  in elf_create_prefix_symbol()
845 		elf_add_symbol(elf, sym);  in elf_create_prefix_symbol()
850 static struct reloc *elf_init_reloc(struct elf *elf, struct section *rsec,  in elf_init_reloc()  argument
874 	set_reloc_offset(elf, reloc, offset);  in elf_init_reloc()
875 	set_reloc_sym(elf, reloc, sym->idx);  in elf_init_reloc()
876 	set_reloc_type(elf, reloc, type);  in elf_init_reloc()
877 	set_reloc_addend(elf, reloc, addend);  in elf_init_reloc()
886 struct reloc *elf_init_reloc_text_sym(struct elf *elf, struct section *sec,  in elf_init_reloc_text_sym()  argument
908 		sym = elf_create_section_symbol(elf, insn_sec);  in elf_init_reloc_text_sym()
915 	return elf_init_reloc(elf, sec->rsec, reloc_idx, offset, sym, addend,  in elf_init_reloc_text_sym()
916 			      elf_text_rela_type(elf));  in elf_init_reloc_text_sym()
919 struct reloc *elf_init_reloc_data_sym(struct elf *elf, struct section *sec,  in elf_init_reloc_data_sym()  argument
931 	return elf_init_reloc(elf, sec->rsec, reloc_idx, offset, sym, addend,  in elf_init_reloc_data_sym()
932 			      elf_data_rela_type(elf));  in elf_init_reloc_data_sym()
935 static int read_relocs(struct elf *elf)  in read_relocs()  argument
944 	if (!elf_alloc_hash(reloc, elf->num_relocs))  in read_relocs()
947 	list_for_each_entry(rsec, &elf->sections, list) {  in read_relocs()
951 		rsec->base = find_section_by_index(elf, rsec->sh.sh_info);  in read_relocs()
971 			reloc->sym = sym = find_symbol_by_index(elf, symndx);  in read_relocs()
989 		printf("num_relocs: %lu\n", elf->num_relocs);  in read_relocs()
990 		printf("reloc_bits: %d\n", elf->reloc_bits);  in read_relocs()
996 struct elf *elf_open_read(const char *name, int flags)  in elf_open_read()
998 	struct elf *elf;  in elf_open_read()  local
1003 	elf = malloc(sizeof(*elf));  in elf_open_read()
1004 	if (!elf) {  in elf_open_read()
1008 	memset(elf, 0, sizeof(*elf));  in elf_open_read()
1010 	INIT_LIST_HEAD(&elf->sections);  in elf_open_read()
1012 	elf->fd = open(name, flags);  in elf_open_read()
1013 	if (elf->fd == -1) {  in elf_open_read()
1026 	elf->elf = elf_begin(elf->fd, cmd, NULL);  in elf_open_read()
1027 	if (!elf->elf) {  in elf_open_read()
1032 	if (!gelf_getehdr(elf->elf, &elf->ehdr)) {  in elf_open_read()
1037 	if (read_sections(elf))  in elf_open_read()
1040 	if (read_symbols(elf))  in elf_open_read()
1043 	if (read_relocs(elf))  in elf_open_read()
1046 	return elf;  in elf_open_read()
1049 	elf_close(elf);  in elf_open_read()
1053 static int elf_add_string(struct elf *elf, struct section *strtab, char *str)  in elf_add_string()  argument
1060 		strtab = find_section_by_name(elf, ".strtab");  in elf_add_string()
1066 	s = elf_getscn(elf->elf, strtab->idx);  in elf_add_string()
1085 	mark_sec_changed(elf, strtab, true);  in elf_add_string()
1090 struct section *elf_create_section(struct elf *elf, const char *name,  in elf_create_section()  argument
1106 	s = elf_newscn(elf->elf);  in elf_create_section()
1150 	shstrtab = find_section_by_name(elf, ".shstrtab");  in elf_create_section()
1152 		shstrtab = find_section_by_name(elf, ".strtab");  in elf_create_section()
1157 	sec->sh.sh_name = elf_add_string(elf, shstrtab, sec->name);  in elf_create_section()
1161 	list_add_tail(&sec->list, &elf->sections);  in elf_create_section()
1165 	mark_sec_changed(elf, sec, true);  in elf_create_section()
1170 static struct section *elf_create_rela_section(struct elf *elf,  in elf_create_rela_section()  argument
1185 	rsec = elf_create_section(elf, rsec_name, elf_rela_size(elf), reloc_nr);  in elf_create_rela_section()
1192 	rsec->sh.sh_addralign = elf_addr_size(elf);  in elf_create_rela_section()
1193 	rsec->sh.sh_link = find_section_by_name(elf, ".symtab")->idx;  in elf_create_rela_section()
1209 struct section *elf_create_section_pair(struct elf *elf, const char *name,  in elf_create_section_pair()  argument
1215 	sec = elf_create_section(elf, name, entsize, nr);  in elf_create_section_pair()
1219 	if (!elf_create_rela_section(elf, sec, reloc_nr))  in elf_create_section_pair()
1225 int elf_write_insn(struct elf *elf, struct section *sec,  in elf_write_insn()  argument
1238 	mark_sec_changed(elf, sec, true);  in elf_write_insn()
1252 static int elf_truncate_section(struct elf *elf, struct section *sec)  in elf_truncate_section()  argument
1259 	s = elf_getscn(elf->elf, sec->idx);  in elf_truncate_section()
1297 int elf_write(struct elf *elf)  in elf_write()  argument
1306 	list_for_each_entry(sec, &elf->sections, list) {  in elf_write()
1308 			elf_truncate_section(elf, sec);  in elf_write()
1311 			s = elf_getscn(elf->elf, sec->idx);  in elf_write()
1323 			mark_sec_changed(elf, sec, false);  in elf_write()
1328 	elf_flagelf(elf->elf, ELF_C_SET, ELF_F_DIRTY);  in elf_write()
1331 	if (elf_update(elf->elf, ELF_C_WRITE) < 0) {  in elf_write()
1336 	elf->changed = false;  in elf_write()
1341 void elf_close(struct elf *elf)  in elf_close()  argument
1343 	if (elf->elf)  in elf_close()
1344 		elf_end(elf->elf);  in elf_close()
1346 	if (elf->fd > 0)  in elf_close()
1347 		close(elf->fd);  in elf_close()