// SPDX-License-Identifier: GPL-2.0-or-later/* * Copyright (C) 2015-2017 Josh Poimboeuf <jpoimboe@redhat.com> */ /* * objtool check: * * This command analyzes every .o file and ensures the validity of its stack * trace metadata.  It enforces a set of rules on asm code and C inline * assembly code so that stack traces can be reliable. * * For more information, see tools/objtool/Documentation/stack-validation.txt. */ #include <subcmd/parse-options.h>#include <string.h>#include "builtin.h"#include "objtool.h" bool no_fp, no_unreachable, retpoline, module, backtrace, uaccess, stats, validate_dup, vmlinux; static const char * const check_usage[] = {	"objtool check [<options>] file.o",	NULL,}; const struct option check_options[] = {	OPT_BOOLEAN('f', "no-fp", &no_fp, "Skip frame pointer validation"),	OPT_BOOLEAN('u', "no-unreachable", &no_unreachable, "Skip 'unreachable instruction' warnings"),	OPT_BOOLEAN('r', "retpoline", &retpoline, "Validate retpoline assumptions"),	OPT_BOOLEAN('m', "module", &module, "Indicates the object will be part of a kernel module"),	OPT_BOOLEAN('b', "backtrace", &backtrace, "unwind on error"),	OPT_BOOLEAN('a', "uaccess", &uaccess, "enable uaccess checking"),	OPT_BOOLEAN('s', "stats", &stats, "print statistics"),	OPT_BOOLEAN('d', "duplicate", &validate_dup, "duplicate validation for vmlinux.o"),	OPT_BOOLEAN('l', "vmlinux", &vmlinux, "vmlinux.o validation"),	OPT_END(),}; int cmd_check(int argc, const char **argv){	const char *objname, *s; 	argc = parse_options(argc, argv, check_options, check_usage, 0); 	if (argc != 1)		usage_with_options(check_usage, check_options); 	objname = argv[0]; 	s = strstr(objname, "vmlinux.o");	if (s && !s[9])		vmlinux = true; 	return check(objname, false);}