1 // SPDX-License-Identifier: GPL-2.0-or-later
9 * This command analyzes every .o file and ensures the validity of its stack
10 * trace metadata. It enforces a set of rules on asm code and C inline
11 * assembly code so that stack traces can be reliable.
13 * For more information, see tools/objtool/Documentation/stack-validation.txt.
16 #include <subcmd/parse-options.h>
20 bool no_fp, no_unreachable, retpoline, module, backtrace, uaccess, stats;
22 static const char * const check_usage[] = {
23 "objtool check [<options>] file.o",
27 const struct option check_options[] = {
28 OPT_BOOLEAN('f', "no-fp", &no_fp, "Skip frame pointer validation"),
29 OPT_BOOLEAN('u', "no-unreachable", &no_unreachable, "Skip 'unreachable instruction' warnings"),
30 OPT_BOOLEAN('r', "retpoline", &retpoline, "Validate retpoline assumptions"),
31 OPT_BOOLEAN('m', "module", &module, "Indicates the object will be part of a kernel module"),
32 OPT_BOOLEAN('b', "backtrace", &backtrace, "unwind on error"),
33 OPT_BOOLEAN('a', "uaccess", &uaccess, "enable uaccess checking"),
34 OPT_BOOLEAN('s', "stats", &stats, "print statistics"),
38 int cmd_check(int argc, const char **argv)
42 argc = parse_options(argc, argv, check_options, check_usage, 0);
45 usage_with_options(check_usage, check_options);
49 return check(objname, false);