31 #define __elf_table(name)	(elf->name##_hash)
32 #define __elf_bits(name)	(elf->name##_bits)
86 struct section *find_section_by_name(const struct elf *elf, const char *name)  in find_section_by_name()  argument
98 static struct section *find_section_by_index(struct elf *elf,  in find_section_by_index()  argument
111 static struct symbol *find_symbol_by_index(struct elf *elf, unsigned int idx)  in find_symbol_by_index()  argument
179 struct symbol *find_symbol_by_name(const struct elf *elf, const char *name)  in find_symbol_by_name()  argument
191 struct reloc *find_reloc_by_dest_range(const struct elf *elf, struct section *sec,  in find_reloc_by_dest_range()  argument
220 struct reloc *find_reloc_by_dest(const struct elf *elf, struct section *sec, unsigned long offset)  in find_reloc_by_dest()  argument
222 	return find_reloc_by_dest_range(elf, sec, offset, 1);  in find_reloc_by_dest()
225 static int read_sections(struct elf *elf)  in read_sections()  argument
232 	if (elf_getshdrnum(elf->elf, &sections_nr)) {  in read_sections()
237 	if (elf_getshdrstrndx(elf->elf, &shstrndx)) {  in read_sections()
257 		s = elf_getscn(elf->elf, i);  in read_sections()
270 		sec->name = elf_strptr(elf->elf, shstrndx, sec->sh.sh_name);  in read_sections()
291 			elf->text_size += sec->sh.sh_size;  in read_sections()
293 		list_add_tail(&sec->list, &elf->sections);  in read_sections()
300 		printf("section_bits: %d\n", elf->section_bits);  in read_sections()
304 	if (elf_nextscn(elf->elf, s)) {  in read_sections()
312 static void elf_add_symbol(struct elf *elf, struct symbol *sym)  in elf_add_symbol()  argument
341 static int read_symbols(struct elf *elf)  in read_symbols()  argument
350 	symtab = find_section_by_name(elf, ".symtab");  in read_symbols()
352 		symtab_shndx = find_section_by_name(elf, ".symtab_shndx");  in read_symbols()
388 		sym->name = elf_strptr(elf->elf, symtab->sh.sh_link,  in read_symbols()
401 			sym->sec = find_section_by_index(elf, shndx);  in read_symbols()
412 			sym->sec = find_section_by_index(elf, 0);  in read_symbols()
414 		elf_add_symbol(elf, sym);  in read_symbols()
419 		printf("symbol_bits: %d\n", elf->symbol_bits);  in read_symbols()
423 	list_for_each_entry(sec, &elf->sections, list) {  in read_symbols()
449 			pfunc = find_symbol_by_name(elf, pname);  in read_symbols()
483 static struct section *elf_create_reloc_section(struct elf *elf,
487 int elf_add_reloc(struct elf *elf, struct section *sec, unsigned long offset,  in elf_add_reloc()  argument
492 	if (!sec->reloc && !elf_create_reloc_section(elf, sec, SHT_RELA))  in elf_add_reloc()
517 int elf_add_reloc_to_insn(struct elf *elf, struct section *sec,  in elf_add_reloc_to_insn()  argument
550 	return elf_add_reloc(elf, sec, offset, type, sym, addend);  in elf_add_reloc_to_insn()
579 static int read_relocs(struct elf *elf)  in read_relocs()  argument
587 	if (!elf_alloc_hash(reloc, elf->text_size / 16))  in read_relocs()
590 	list_for_each_entry(sec, &elf->sections, list) {  in read_relocs()
595 		sec->base = find_section_by_index(elf, sec->sh.sh_info);  in read_relocs()
626 			reloc->sym = find_symbol_by_index(elf, symndx);  in read_relocs()
645 		printf("reloc_bits: %d\n", elf->reloc_bits);  in read_relocs()
651 struct elf *elf_open_read(const char *name, int flags)  in elf_open_read()
653 	struct elf *elf;  in elf_open_read()  local
658 	elf = malloc(sizeof(*elf));  in elf_open_read()
659 	if (!elf) {  in elf_open_read()
663 	memset(elf, 0, offsetof(struct elf, sections));  in elf_open_read()
665 	INIT_LIST_HEAD(&elf->sections);  in elf_open_read()
667 	elf->fd = open(name, flags);  in elf_open_read()
668 	if (elf->fd == -1) {  in elf_open_read()
681 	elf->elf = elf_begin(elf->fd, cmd, NULL);  in elf_open_read()
682 	if (!elf->elf) {  in elf_open_read()
687 	if (!gelf_getehdr(elf->elf, &elf->ehdr)) {  in elf_open_read()
692 	if (read_sections(elf))  in elf_open_read()
695 	if (read_symbols(elf))  in elf_open_read()
698 	if (read_relocs(elf))  in elf_open_read()
701 	return elf;  in elf_open_read()
704 	elf_close(elf);  in elf_open_read()
708 static int elf_add_string(struct elf *elf, struct section *strtab, char *str)  in elf_add_string()  argument
715 		strtab = find_section_by_name(elf, ".strtab");  in elf_add_string()
721 	s = elf_getscn(elf->elf, strtab->idx);  in elf_add_string()
744 struct symbol *elf_create_undef_symbol(struct elf *elf, const char *name)  in elf_create_undef_symbol()  argument
760 	sym->sym.st_name = elf_add_string(elf, NULL, sym->name);  in elf_create_undef_symbol()
770 	symtab = find_section_by_name(elf, ".symtab");  in elf_create_undef_symbol()
776 	s = elf_getscn(elf->elf, symtab->idx);  in elf_create_undef_symbol()
798 	symtab_shndx = find_section_by_name(elf, ".symtab_shndx");  in elf_create_undef_symbol()
800 		s = elf_getscn(elf->elf, symtab_shndx->idx);  in elf_create_undef_symbol()
821 	sym->sec = find_section_by_index(elf, 0);  in elf_create_undef_symbol()
823 	elf_add_symbol(elf, sym);  in elf_create_undef_symbol()
828 struct section *elf_create_section(struct elf *elf, const char *name,  in elf_create_section()  argument
845 	s = elf_newscn(elf->elf);  in elf_create_section()
890 	shstrtab = find_section_by_name(elf, ".shstrtab");  in elf_create_section()
892 		shstrtab = find_section_by_name(elf, ".strtab");  in elf_create_section()
897 	sec->sh.sh_name = elf_add_string(elf, shstrtab, sec->name);  in elf_create_section()
901 	list_add_tail(&sec->list, &elf->sections);  in elf_create_section()
905 	elf->changed = true;  in elf_create_section()
910 static struct section *elf_create_rel_reloc_section(struct elf *elf, struct section *base)  in elf_create_rel_reloc_section()  argument
923 	sec = elf_create_section(elf, relocname, 0, sizeof(GElf_Rel), 0);  in elf_create_rel_reloc_section()
933 	sec->sh.sh_link = find_section_by_name(elf, ".symtab")->idx;  in elf_create_rel_reloc_section()
940 static struct section *elf_create_rela_reloc_section(struct elf *elf, struct section *base)  in elf_create_rela_reloc_section()  argument
953 	sec = elf_create_section(elf, relocname, 0, sizeof(GElf_Rela), 0);  in elf_create_rela_reloc_section()
963 	sec->sh.sh_link = find_section_by_name(elf, ".symtab")->idx;  in elf_create_rela_reloc_section()
970 static struct section *elf_create_reloc_section(struct elf *elf,  in elf_create_reloc_section()  argument
975 	case SHT_REL:  return elf_create_rel_reloc_section(elf, base);  in elf_create_reloc_section()
976 	case SHT_RELA: return elf_create_rela_reloc_section(elf, base);  in elf_create_reloc_section()
1044 static int elf_rebuild_reloc_section(struct elf *elf, struct section *sec)  in elf_rebuild_reloc_section()  argument
1053 int elf_write_insn(struct elf *elf, struct section *sec,  in elf_write_insn()  argument
1067 	elf->changed = true;  in elf_write_insn()
1072 int elf_write_reloc(struct elf *elf, struct reloc *reloc)  in elf_write_reloc()  argument
1095 	elf->changed = true;  in elf_write_reloc()
1100 int elf_write(struct elf *elf)  in elf_write()  argument
1106 	list_for_each_entry(sec, &elf->sections, list) {  in elf_write()
1108 			s = elf_getscn(elf->elf, sec->idx);  in elf_write()
1119 			    elf_rebuild_reloc_section(elf, sec)) {  in elf_write()
1125 			elf->changed = true;  in elf_write()
1130 	elf_flagelf(elf->elf, ELF_C_SET, ELF_F_DIRTY);  in elf_write()
1133 	if (elf_update(elf->elf, ELF_C_WRITE) < 0) {  in elf_write()
1138 	elf->changed = false;  in elf_write()
1143 void elf_close(struct elf *elf)  in elf_close()  argument
1149 	if (elf->elf)  in elf_close()
1150 		elf_end(elf->elf);  in elf_close()
1152 	if (elf->fd > 0)  in elf_close()
1153 		close(elf->fd);  in elf_close()
1155 	list_for_each_entry_safe(sec, tmpsec, &elf->sections, list) {  in elf_close()
1170 	free(elf);  in elf_close()