77 строки
1.4 KiB
C
77 строки
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com>
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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 <objtool/builtin.h>
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#include <objtool/objtool.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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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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struct objtool_file *file;
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int ret;
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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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file = objtool_open_read(objname);
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if (!file)
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return 1;
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ret = check(file);
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if (ret)
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return ret;
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if (list_empty(&file->insn_list))
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return 0;
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ret = orc_create(file);
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if (ret)
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return ret;
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if (!file->elf->changed)
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return 0;
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return elf_write(file->elf);
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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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