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
  20 static const char *orc_usage[] = {
  21         "objtool orc generate [<options>] file.o",
  22         "objtool orc dump file.o",
  23         NULL,
  24 };
  25
  26 int 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 }