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d89e426499
Fix a seg fault when no parameter is provided to 'objtool orc'. Signed-off-by: Simon Ser <contact@emersion.fr> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/9172803ec7ebb72535bcd0b7f966ae96d515968e.1514666459.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
/*
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* Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* objtool orc:
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*
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* This command analyzes a .o file and adds .orc_unwind and .orc_unwind_ip
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* sections to it, which is used by the in-kernel ORC unwinder.
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*
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* This command is a superset of "objtool check".
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*/
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#include <string.h>
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#include <subcmd/parse-options.h>
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#include "builtin.h"
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#include "check.h"
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static const char *orc_usage[] = {
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"objtool orc generate [<options>] file.o",
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"objtool orc dump file.o",
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NULL,
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};
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extern const struct option check_options[];
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extern bool no_fp, no_unreachable;
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int cmd_orc(int argc, const char **argv)
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{
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const char *objname;
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argc--; argv++;
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if (argc <= 0)
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usage_with_options(orc_usage, check_options);
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if (!strncmp(argv[0], "gen", 3)) {
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argc = parse_options(argc, argv, check_options, orc_usage, 0);
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if (argc != 1)
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usage_with_options(orc_usage, check_options);
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objname = argv[0];
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return check(objname, no_fp, no_unreachable, true);
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}
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if (!strcmp(argv[0], "dump")) {
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if (argc != 2)
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usage_with_options(orc_usage, check_options);
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objname = argv[1];
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return orc_dump(objname);
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}
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usage_with_options(orc_usage, check_options);
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return 0;
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}
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