1 // SPDX-License-Identifier: GPL-2.0-only
6  * Copyright (C) 1999-2019 Alibaba Group Holding Limited. by:
9  * Copyright 2011 - 2012 Cavium, Inc.
20  * Strategy: alter the vmlinux file in-place.
170  * the way to -256..-1, to avoid conflicting with real section
173 #define SPECIAL(i) ((i) - (SHN_HIRESERVE + 1))
180 /* Accessor for sym->st_shndx, hides ugliness of "64k sections" */
203 		return -1;  in compare_relative_table()
229 		w(r(loc) - i, loc);  in sort_relative_table()
243 		/* Don't touch the fixup type or data */  in sort_relative_table_with_data()
254 		w(r(loc) - i, loc);  in sort_relative_table_with_data()
255 		w(r(loc + 1) - (i + 4), loc + 1);  in sort_relative_table_with_data()
256 		/* Don't touch the fixup type or data */  in sort_relative_table_with_data()
282 		w(r(loc) - i, loc);  in x86_sort_relative_table()
283 		w(r(loc + 1) - (i + 4), loc + 1);  in x86_sort_relative_table()
284 		w(r(loc + 2) - (i + 8), loc + 2);  in x86_sort_relative_table()
301 		 * 0 is a special self-relative handler value, which means that  in s390_sort_relative_table()
304 		 * When creating extable-relative values, keep it as 0, since  in s390_sort_relative_table()
320 		w(r((uint32_t *)loc) - i, (uint32_t *)loc);  in s390_sort_relative_table()
321 		w(r((uint32_t *)(loc + 4)) - (i + 4), (uint32_t *)(loc + 4));  in s390_sort_relative_table()
324 			handler -= i + 8;  in s390_sort_relative_table()
331 	int rc = -1;  in do_file()
335 	switch (ehdr->e_ident[EI_DATA]) {  in do_file()
354 			ehdr->e_ident[EI_DATA], fname);  in do_file()
355 		return -1;  in do_file()
358 	if (memcmp(ELFMAG, ehdr->e_ident, SELFMAG) != 0 ||  in do_file()
359 	    (r2(&ehdr->e_type) != ET_EXEC && r2(&ehdr->e_type) != ET_DYN) ||  in do_file()
360 	    ehdr->e_ident[EI_VERSION] != EV_CURRENT) {  in do_file()
362 		return -1;  in do_file()
365 	switch (r2(&ehdr->e_machine)) {  in do_file()
391 			r2(&ehdr->e_machine), fname);  in do_file()
392 		return -1;  in do_file()
395 	switch (ehdr->e_ident[EI_CLASS]) {  in do_file()
397 		if (r2(&ehdr->e_ehsize) != sizeof(Elf32_Ehdr) ||  in do_file()
398 		    r2(&ehdr->e_shentsize) != sizeof(Elf32_Shdr)) {  in do_file()
408 		if (r2(&ghdr->e_ehsize) != sizeof(Elf64_Ehdr) ||  in do_file()
409 		    r2(&ghdr->e_shentsize) != sizeof(Elf64_Shdr)) {  in do_file()
420 			ehdr->e_ident[EI_CLASS], fname);  in do_file()
429 	int i, n_error = 0;  /* gcc-4.3.0 false positive complaint */  in main()
438 	/* Process each file in turn, allowing deep failure. */  in main()