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 "check.h"
  18
  19
  20static const char *orc_usage[] = {
  21        "objtool orc generate [<options>] file.o",
  22        "objtool orc dump file.o",
  23        NULL,
  24};
  25
  26int cmd_orc(int argc, const char **argv)
  27{
  28        const char *objname;
  29
  30        argc--; argv++;
  31        if (argc <= 0)
  32                usage_with_options(orc_usage, check_options);
  33
  34        if (!strncmp(argv[0], "gen", 3)) {
  35                argc = parse_options(argc, argv, check_options, orc_usage, 0);
  36                if (argc != 1)
  37                        usage_with_options(orc_usage, check_options);
  38
  39                objname = argv[0];
  40
  41                return check(objname, true);
  42        }
  43
  44        if (!strcmp(argv[0], "dump")) {
  45                if (argc != 2)
  46                        usage_with_options(orc_usage, check_options);
  47
  48                objname = argv[1];
  49
  50                return orc_dump(objname);
  51        }
  52
  53        usage_with_options(orc_usage, check_options);
  54
  55        return 0;
  56}
  57