tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18/*
19 * objtool orc:
20 *
21 * This command analyzes a .o file and adds .orc_unwind and .orc_unwind_ip
22 * sections to it, which is used by the in-kernel ORC unwinder.
23 *
24 * This command is a superset of "objtool check".
25 */
26
27#include <string.h>
28#include "builtin.h"
29#include "check.h"
30
31
32static const char *orc_usage[] = {
33 "objtool orc generate [<options>] file.o",
34 "objtool orc dump file.o",
35 NULL,
36};
37
38int cmd_orc(int argc, const char **argv)
39{
40 const char *objname;
41
42 argc--; argv++;
43 if (argc <= 0)
44 usage_with_options(orc_usage, check_options);
45
46 if (!strncmp(argv[0], "gen", 3)) {
47 argc = parse_options(argc, argv, check_options, orc_usage, 0);
48 if (argc != 1)
49 usage_with_options(orc_usage, check_options);
50
51 objname = argv[0];
52
53 return check(objname, true);
54 }
55
56 if (!strcmp(argv[0], "dump")) {
57 if (argc != 2)
58 usage_with_options(orc_usage, check_options);
59
60 objname = argv[1];
61
62 return orc_dump(objname);
63 }
64
65 usage_with_options(orc_usage, check_options);
66
67 return 0;
68}