1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com>
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun /*
7*4882a593Smuzhiyun * objtool orc:
8*4882a593Smuzhiyun *
9*4882a593Smuzhiyun * This command analyzes a .o file and adds .orc_unwind and .orc_unwind_ip
10*4882a593Smuzhiyun * sections to it, which is used by the in-kernel ORC unwinder.
11*4882a593Smuzhiyun *
12*4882a593Smuzhiyun * This command is a superset of "objtool check".
13*4882a593Smuzhiyun */
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #include <string.h>
16*4882a593Smuzhiyun #include "builtin.h"
17*4882a593Smuzhiyun #include "objtool.h"
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun static const char *orc_usage[] = {
20*4882a593Smuzhiyun "objtool orc generate [<options>] file.o",
21*4882a593Smuzhiyun "objtool orc dump file.o",
22*4882a593Smuzhiyun NULL,
23*4882a593Smuzhiyun };
24*4882a593Smuzhiyun
cmd_orc(int argc,const char ** argv)25*4882a593Smuzhiyun int cmd_orc(int argc, const char **argv)
26*4882a593Smuzhiyun {
27*4882a593Smuzhiyun const char *objname;
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun argc--; argv++;
30*4882a593Smuzhiyun if (argc <= 0)
31*4882a593Smuzhiyun usage_with_options(orc_usage, check_options);
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun if (!strncmp(argv[0], "gen", 3)) {
34*4882a593Smuzhiyun struct objtool_file *file;
35*4882a593Smuzhiyun int ret;
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun argc = parse_options(argc, argv, check_options, orc_usage, 0);
38*4882a593Smuzhiyun if (argc != 1)
39*4882a593Smuzhiyun usage_with_options(orc_usage, check_options);
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun objname = argv[0];
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun file = objtool_open_read(objname);
44*4882a593Smuzhiyun if (!file)
45*4882a593Smuzhiyun return 1;
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun ret = check(file);
48*4882a593Smuzhiyun if (ret)
49*4882a593Smuzhiyun return ret;
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun if (list_empty(&file->insn_list))
52*4882a593Smuzhiyun return 0;
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun ret = orc_create(file);
55*4882a593Smuzhiyun if (ret)
56*4882a593Smuzhiyun return ret;
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun if (!file->elf->changed)
59*4882a593Smuzhiyun return 0;
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun return elf_write(file->elf);
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun if (!strcmp(argv[0], "dump")) {
65*4882a593Smuzhiyun if (argc != 2)
66*4882a593Smuzhiyun usage_with_options(orc_usage, check_options);
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun objname = argv[1];
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun return orc_dump(objname);
71*4882a593Smuzhiyun }
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun usage_with_options(orc_usage, check_options);
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun return 0;
76*4882a593Smuzhiyun }
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