LXR linux/tools/objtool/builtin-orc.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com>
   4 */
   5
   6/*
   7 * objtool orc:
   8 *
   9 * This command analyzes a .o file and adds .orc_unwind and .orc_unwind_ip
  10 * sections to it, which is used by the in-kernel ORC unwinder.
  11 *
  12 * This command is a superset of "objtool check".
  13 */
  14
  15#include <string.h>
  16#include "builtin.h"
  17#include "objtool.h"
  18
  19static const char *orc_usage[] = {
  20        "objtool orc generate [<options>] file.o",
  21        "objtool orc dump file.o",
  22        NULL,
  23};
  24
  25int cmd_orc(int argc, const char **argv)
  26{
  27        const char *objname;
  28
  29        argc--; argv++;
  30        if (argc <= 0)
  31                usage_with_options(orc_usage, check_options);
  32
  33        if (!strncmp(argv[0], "gen", 3)) {
  34                argc = parse_options(argc, argv, check_options, orc_usage, 0);
  35                if (argc != 1)
  36                        usage_with_options(orc_usage, check_options);
  37
  38                objname = argv[0];
  39
  40                return check(objname, true);
  41        }
  42
  43        if (!strcmp(argv[0], "dump")) {
  44                if (argc != 2)
  45                        usage_with_options(orc_usage, check_options);
  46
  47                objname = argv[1];
  48
  49                return orc_dump(objname);
  50        }
  51
  52        usage_with_options(orc_usage, check_options);
  53
  54        return 0;
  55}
  56