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442f04c3 | 1 | /* |
dcc914f4 | 2 | * Copyright (C) 2015-2017 Josh Poimboeuf <jpoimboe@redhat.com> |
442f04c3 JP |
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 check: | |
20 | * | |
21 | * This command analyzes every .o file and ensures the validity of its stack | |
22 | * trace metadata. It enforces a set of rules on asm code and C inline | |
23 | * assembly code so that stack traces can be reliable. | |
24 | * | |
25 | * For more information, see tools/objtool/Documentation/stack-validation.txt. | |
26 | */ | |
27 | ||
442f04c3 | 28 | #include <subcmd/parse-options.h> |
442f04c3 | 29 | #include "builtin.h" |
dcc914f4 | 30 | #include "check.h" |
442f04c3 | 31 | |
1826c640 | 32 | bool no_fp, no_unreachable, retpoline, module; |
442f04c3 | 33 | |
dcc914f4 | 34 | static const char * const check_usage[] = { |
442f04c3 JP |
35 | "objtool check [<options>] file.o", |
36 | NULL, | |
37 | }; | |
38 | ||
dcc914f4 | 39 | const struct option check_options[] = { |
867ac9d7 JP |
40 | OPT_BOOLEAN('f', "no-fp", &no_fp, "Skip frame pointer validation"), |
41 | OPT_BOOLEAN('u', "no-unreachable", &no_unreachable, "Skip 'unreachable instruction' warnings"), | |
cb83ad28 | 42 | OPT_BOOLEAN('r', "retpoline", &retpoline, "Validate retpoline assumptions"), |
1826c640 | 43 | OPT_BOOLEAN('m', "module", &module, "Indicates the object will be part of a kernel module"), |
dcc914f4 JP |
44 | OPT_END(), |
45 | }; | |
46 | ||
442f04c3 JP |
47 | int cmd_check(int argc, const char **argv) |
48 | { | |
dcc914f4 | 49 | const char *objname; |
442f04c3 | 50 | |
dcc914f4 | 51 | argc = parse_options(argc, argv, check_options, check_usage, 0); |
442f04c3 JP |
52 | |
53 | if (argc != 1) | |
dcc914f4 | 54 | usage_with_options(check_usage, check_options); |
442f04c3 JP |
55 | |
56 | objname = argv[0]; | |
57 | ||
b4ca1a81 | 58 | return check(objname, false); |
442f04c3 | 59 | } |