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- // SPDX-License-Identifier: GPL-2.0-or-later
- /*
- * Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com>
- */
- /*
- * objtool orc:
- *
- * This command analyzes a .o file and adds .orc_unwind and .orc_unwind_ip
- * sections to it, which is used by the in-kernel ORC unwinder.
- *
- * This command is a superset of "objtool check".
- */
- #include <string.h>
- #include "builtin.h"
- #include "objtool.h"
- static const char *orc_usage[] = {
- "objtool orc generate [<options>] file.o",
- "objtool orc dump file.o",
- NULL,
- };
- int cmd_orc(int argc, const char **argv)
- {
- const char *objname;
- argc--; argv++;
- if (argc <= 0)
- usage_with_options(orc_usage, check_options);
- if (!strncmp(argv[0], "gen", 3)) {
- struct objtool_file *file;
- int ret;
- argc = parse_options(argc, argv, check_options, orc_usage, 0);
- if (argc != 1)
- usage_with_options(orc_usage, check_options);
- objname = argv[0];
- file = objtool_open_read(objname);
- if (!file)
- return 1;
- ret = check(file);
- if (ret)
- return ret;
- if (list_empty(&file->insn_list))
- return 0;
- ret = create_orc(file);
- if (ret)
- return ret;
- ret = create_orc_sections(file);
- if (ret)
- return ret;
- if (!file->elf->changed)
- return 0;
- return elf_write(file->elf);
- }
- if (!strcmp(argv[0], "dump")) {
- if (argc != 2)
- usage_with_options(orc_usage, check_options);
- objname = argv[1];
- return orc_dump(objname);
- }
- usage_with_options(orc_usage, check_options);
- return 0;
- }
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