1 // SPDX-License-Identifier: GPL-2.0-only
6  * Copyright (C) 1999-2019 Alibaba Group Holding Limited. by:
9  * Copyright 2011 - 2012 Cavium, Inc.
11  * Based on code taken from recortmcount.c which is:
20  * Strategy: alter the vmlinux file in-place.
120 	return r8(&ehdr->e64.e_shoff);  in ehdr64_shoff()
125 	return r(&ehdr->e32.e_shoff);  in ehdr32_shoff()
136 	return r2(&ehdr->e64.e_##fn_name);		\
141 	return r2(&ehdr->e32.e_##fn_name);		\
156 	return r(&shdr->e64.sh_##fn_name);		\  in EHDR_HALF()
161 	return r(&shdr->e32.sh_##fn_name);		\
172 	return r8(&shdr->e64.sh_##fn_name);		\
177 	return r(&shdr->e32.sh_##fn_name);		\
188 	return r(&shdr->e64.sh_##fn_name);		\
193 	return r(&shdr->e32.sh_##fn_name);		\
212 	return r8(&sym->e64.st_##fn_name);	\
217 	return r(&sym->e32.st_##fn_name);	\
228 	return r(&sym->e64.st_##fn_name);	\
233 	return r(&sym->e32.st_##fn_name);	\
244 	return r2(&sym->e64.st_##fn_name);	\
249 	return r2(&sym->e32.st_##fn_name);	\
259 	return ELF64_ST_TYPE(sym->e64.st_info);
264 	return ELF32_ST_TYPE(sym->e32.st_info);  in sym32_type()
281 	return r8((uint64_t *)&rela->e64.r_##fn_name);		\  in SYM_WORD()
286 	return r((uint32_t *)&rela->e32.r_##fn_name);		\
300 	w8(val, (uint64_t *)&rela->e64.r_addend);
305 	w(val, (uint32_t *)&rela->e32.r_addend);  in rela32_write_addend()
399  * the way to -256..-1, to avoid conflicting with real section
402 #define SPECIAL(i) ((i) - (SHN_HIRESERVE + 1))
409 /* Accessor for sym->st_shndx, hides ugliness of "64k sections" */
427 		return -1;  in compare_extable_32()
437 		return -1;  in compare_extable_64()
482 		return -1;  in orc_sort_cmp()
486 	 * to ensure the lookup code skips them in favor of real entries.  in orc_sort_cmp()
490 	orc_a = g_orc_table + (a - g_orc_ip_table);  in orc_sort_cmp()
491 	orc_b = g_orc_table + (b - g_orc_ip_table);  in orc_sort_cmp()
492 	if (orc_a->type == ORC_TYPE_UNDEFINED && orc_b->type == ORC_TYPE_UNDEFINED)  in orc_sort_cmp()
494 	return orc_a->type == ORC_TYPE_UNDEFINED ? -1 : 1;  in orc_sort_cmp()
542 		g_orc_ip_table[i] = tmp_orc_ip_table[idxs[i]] - i * sizeof(int);  in sort_orctable()
561 		return -1;  in compare_values_64()
571 		return -1;  in compare_values_32()
588 /* List of functions created by: nm -S vmlinux */
594 #define FUNC_BLK_MASK	(FUNC_BLK_SIZE - 1)
605 			return -1;  in add_field()
609 	fi->addr = addr;  in add_field()
610 	fi->size = size;  in add_field()
623 	if (key + before_func < a->addr)  in cmp_func_addr()
624 		return -1;  in cmp_func_addr()
625 	return key >= a->addr + a->size;  in cmp_func_addr()
640 	if (a->addr < b->addr)  in cmp_funcs()
641 		return -1;  in cmp_funcs()
642 	return a->addr > b->addr;  in cmp_funcs()
655 		return -1;  in parse_symbols()
669 			return -1;  in parse_symbols()
726 					return -1;  in fill_relocs()
734 					return -1;  in fill_relocs()
818 	uint64_t offset = emloc->start_mcount_loc - shdr_addr(emloc->init_data_sec)  in sort_mcount_loc()
819 					+ shdr_offset(emloc->init_data_sec);  in sort_mcount_loc()
820 	uint64_t size = emloc->stop_mcount_loc - emloc->start_mcount_loc;  in sort_mcount_loc()
821 	unsigned char *start_loc = (void *)emloc->ehdr + offset;  in sort_mcount_loc()
822 	Elf_Ehdr *ehdr = emloc->ehdr;  in sort_mcount_loc()
834 		count = fill_relocs(vals, size, ehdr, emloc->start_mcount_loc);  in sort_mcount_loc()
875 		replace_relocs(vals, size, ehdr, emloc->start_mcount_loc);  in sort_mcount_loc()
893 	sym = (void *)emloc->ehdr + shdr_offset(symtab_sec);  in get_mcount_loc()
898 			emloc->start_mcount_loc = sym_value(sym);  in get_mcount_loc()
902 			emloc->stop_mcount_loc = sym_value(sym);  in get_mcount_loc()
909 	if (!emloc->start_mcount_loc) {  in get_mcount_loc()
914 	if (!emloc->stop_mcount_loc) {  in get_mcount_loc()
927 	int rc = -1;  in do_sort()
1106 				       ((void *)sort_needed_sym - (void *)symtab) / symentsize,  in do_sort()
1111 		sym_value(sort_needed_sym) - shdr_addr(sort_needed_sec);  in do_sort()
1128 			rc = -1;  in do_sort()
1146 			rc = -1;  in do_sort()
1162 		return -1;  in compare_relative_table()
1177 		uint32_t *loc = (uint32_t *)(extab_image + i);  in sort_relative_table()  local
1178 		w(r(loc) + i, loc);  in sort_relative_table()
1187 		uint32_t *loc = (uint32_t *)(extab_image + i);  in sort_relative_table()  local
1188 		w(r(loc) - i, loc);  in sort_relative_table()
1198 		uint32_t *loc = (uint32_t *)(extab_image + i);  in sort_relative_table_with_data()  local
1200 		w(r(loc) + i, loc);  in sort_relative_table_with_data()
1201 		w(r(loc + 1) + i + 4, loc + 1);  in sort_relative_table_with_data()
1211 		uint32_t *loc = (uint32_t *)(extab_image + i);  in sort_relative_table_with_data()  local
1213 		w(r(loc) - i, loc);  in sort_relative_table_with_data()
1214 		w(r(loc + 1) - (i + 4), loc + 1);  in sort_relative_table_with_data()
1226 	switch (ehdr->e32.e_ident[EI_DATA]) {  in do_file()
1243 			ehdr->e32.e_ident[EI_DATA], fname);  in do_file()
1244 		return -1;  in do_file()
1247 	if (memcmp(ELFMAG, ehdr->e32.e_ident, SELFMAG) != 0 ||  in do_file()
1248 	    (r2(&ehdr->e32.e_type) != ET_EXEC && r2(&ehdr->e32.e_type) != ET_DYN) ||  in do_file()
1249 	    ehdr->e32.e_ident[EI_VERSION] != EV_CURRENT) {  in do_file()
1251 		return -1;  in do_file()
1254 	switch (r2(&ehdr->e32.e_machine)) {  in do_file()
1284 			r2(&ehdr->e32.e_machine), fname);  in do_file()
1285 		return -1;  in do_file()
1288 	switch (ehdr->e32.e_ident[EI_CLASS]) {  in do_file()
1317 		if (r2(&ehdr->e32.e_ehsize) != sizeof(Elf32_Ehdr) ||  in do_file()
1318 		    r2(&ehdr->e32.e_shentsize) != sizeof(Elf32_Shdr)) {  in do_file()
1321 			return -1;  in do_file()
1354 		if (r2(&ehdr->e64.e_ehsize) != sizeof(Elf64_Ehdr) ||  in do_file()
1355 		    r2(&ehdr->e64.e_shentsize) != sizeof(Elf64_Shdr)) {  in do_file()
1359 			return -1;  in do_file()
1366 			ehdr->e32.e_ident[EI_CLASS], fname);  in do_file()
1367 		return -1;  in do_file()
1375 	int i, n_error = 0;  /* gcc-4.3.0 false positive complaint */  in main()
1385 				return -1;  in main()
1389 			fprintf(stderr, "usage: sorttable [-s nm-file] vmlinux...\n");  in main()
1394 	if ((argc - optind) < 1) {  in main()