/*
   * 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);
  }