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tools/objtool/builtin-orc.c 1.66 KB
627fce148   Josh Poimboeuf   objtool: Add ORC ...
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  /*
   * Copyright (C) 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 orc:
   *
   * This command analyzes a .o file and adds .orc_unwind and .orc_unwind_ip
   * sections to it, which is used by the in-kernel ORC unwinder.
   *
   * This command is a superset of "objtool check".
   */
  
  #include <string.h>
627fce148   Josh Poimboeuf   objtool: Add ORC ...
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  #include "builtin.h"
  #include "check.h"
  
  
  static const char *orc_usage[] = {
  	"objtool orc generate [<options>] file.o",
  	"objtool orc dump file.o",
  	NULL,
  };
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  int cmd_orc(int argc, const char **argv)
  {
  	const char *objname;
  
  	argc--; argv++;
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  	if (argc <= 0)
  		usage_with_options(orc_usage, check_options);
627fce148   Josh Poimboeuf   objtool: Add ORC ...
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  	if (!strncmp(argv[0], "gen", 3)) {
  		argc = parse_options(argc, argv, check_options, orc_usage, 0);
  		if (argc != 1)
  			usage_with_options(orc_usage, check_options);
  
  		objname = argv[0];
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  		return check(objname, true);
627fce148   Josh Poimboeuf   objtool: Add ORC ...
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  	}
  
  	if (!strcmp(argv[0], "dump")) {
  		if (argc != 2)
  			usage_with_options(orc_usage, check_options);
  
  		objname = argv[1];
  
  		return orc_dump(objname);
  	}
  
  	usage_with_options(orc_usage, check_options);
  
  	return 0;
  }