linux-imx

/*

 * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, see <http://www.gnu.org/licenses/>.

 */

​

/*

 * objtool:

 *

 * The 'check' subcmd analyzes every .o file and ensures the validity of its

 * stack trace metadata.  It enforces a set of rules on asm code and C inline

 * assembly code so that stack traces can be reliable.

 *

 * For more information, see tools/objtool/Documentation/stack-validation.txt.

 */

​

#include <stdio.h>

#include <stdbool.h>

#include <string.h>

#include <stdlib.h>

#include <subcmd/exec-cmd.h>

#include <subcmd/pager.h>

#include <linux/kernel.h>

​

#include "builtin.h"

​

struct cmd_struct {

    const char *name;

    int (*fn)(int, const char **);

    const char *help;

};

​

static const char objtool_usage_string[] =

    "objtool COMMAND [ARGS]";

​

static struct cmd_struct objtool_cmds[] = {

    {"check",   cmd_check,  "Perform stack metadata validation on an object file" },

    {"orc",     cmd_orc,    "Generate in-place ORC unwind tables for an object file" },

};

​

bool help;

​

static void cmd_usage(void)

{

    unsigned int i, longest = 0;

​

    printf("\n usage: %s\n\n", objtool_usage_string);

​

    for (i = 0; i < ARRAY_SIZE(objtool_cmds); i++) {

        if (longest < strlen(objtool_cmds[i].name))

            longest = strlen(objtool_cmds[i].name);

    }