/* * Copyright (C) 2015-2017 Josh Poimboeuf <jpoimboe@redhat.com> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see <http://www.gnu.org/licenses/>. */ /* * 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 "builtin.h" #include "check.h" bool no_fp, no_unreachable, retpoline, module; 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_END(), }; int cmd_check(int argc, const char **argv) { const char *objname; argc = parse_options(argc, argv, check_options, check_usage, 0); if (argc != 1) usage_with_options(check_usage, check_options); objname = argv[0]; return check(objname, false); }