1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
9 * The 'check' subcmd analyzes every .o file and ensures the validity of its
10 * stack 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.
20 #include <subcmd/exec-cmd.h>
21 #include <subcmd/pager.h>
22 #include <linux/kernel.h>
28 int (*fn)(int, const char **);
32 static const char objtool_usage_string[] =
33 "objtool COMMAND [ARGS]";
35 static struct cmd_struct objtool_cmds[] = {
36 {"check", cmd_check, "Perform stack metadata validation on an object file" },
37 {"orc", cmd_orc, "Generate in-place ORC unwind tables for an object file" },
42 static void cmd_usage(void)
44 unsigned int i, longest = 0;
46 printf("\n usage: %s\n\n", objtool_usage_string);
48 for (i = 0; i < ARRAY_SIZE(objtool_cmds); i++) {
49 if (longest < strlen(objtool_cmds[i].name))
50 longest = strlen(objtool_cmds[i].name);
54 for (i = 0; i < ARRAY_SIZE(objtool_cmds); i++) {
55 printf(" %-*s ", longest, objtool_cmds[i].name);
56 puts(objtool_cmds[i].help);
64 static void handle_options(int *argc, const char ***argv)
67 const char *cmd = (*argv)[0];
72 if (!strcmp(cmd, "--help") || !strcmp(cmd, "-h")) {
76 fprintf(stderr, "Unknown option: %s\n", cmd);
85 static void handle_internal_command(int argc, const char **argv)
87 const char *cmd = argv[0];
90 for (i = 0; i < ARRAY_SIZE(objtool_cmds); i++) {
91 struct cmd_struct *p = objtool_cmds+i;
93 if (strcmp(p->name, cmd))
96 ret = p->fn(argc, argv);
104 int main(int argc, const char **argv)
106 static const char *UNUSED = "OBJTOOL_NOT_IMPLEMENTED";
109 exec_cmd_init("objtool", UNUSED, UNUSED, UNUSED);
114 handle_options(&argc, &argv);
119 handle_internal_command(argc, argv);