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f1035767 | 1 | /* Generate checksums of executables for PCH validation |
cd819d2f | 2 | Copyright (C) 2005, 2007, 2009 |
f1035767 | 3 | Free Software Foundation, Inc. |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
8c4c00c1 | 9 | Software Foundation; either version 3, or (at your option) any later |
f1035767 | 10 | version. |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
8c4c00c1 | 18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
f1035767 | 20 | |
21 | #include "bconfig.h" | |
22 | #include "system.h" | |
23 | #include "md5.h" | |
24 | ||
25 | static void | |
26 | usage (void) | |
27 | { | |
28 | fputs ("Usage: genchecksums <filename>\n", stderr); | |
29 | } | |
30 | ||
31 | static void | |
32 | dosum (const char *file) | |
33 | { | |
34 | FILE *f; | |
35 | unsigned char result[16]; | |
36 | int i; | |
48e1416a | 37 | |
f1035767 | 38 | f = fopen (file, "rb"); |
39 | if (!f) | |
40 | { | |
41 | fprintf (stderr, "opening %s: %s\n", file, xstrerror (errno)); | |
42 | exit (1); | |
43 | } | |
48e1416a | 44 | |
f1035767 | 45 | /* Some executable formats have timestamps in the first 16 bytes, yuck. */ |
46 | if (fseek (f, 16, SEEK_SET) != 0) | |
47 | { | |
48 | fprintf (stderr, "seeking in %s: %s\n", file, xstrerror (errno)); | |
49 | exit (1); | |
50 | } | |
48e1416a | 51 | |
f1035767 | 52 | if (md5_stream (f, result) != 0 |
53 | || fclose (f) != 0) | |
54 | { | |
55 | fprintf (stderr, "reading %s: %s\n", file, xstrerror (errno)); | |
56 | exit (1); | |
57 | } | |
58 | ||
cd819d2f | 59 | puts ("#include \"config.h\""); |
60 | puts ("#include \"system.h\""); | |
61 | fputs ("EXPORTED_CONST unsigned char executable_checksum[16] = { ", stdout); | |
f1035767 | 62 | for (i = 0; i < 16; i++) |
63 | printf ("%#02x%s", result[i], i == 15 ? " };\n" : ", "); | |
64 | } | |
65 | ||
66 | int | |
67 | main (int argc, char ** argv) | |
68 | { | |
69 | if (argc != 2) | |
70 | { | |
71 | usage (); | |
72 | return 1; | |
73 | } | |
74 | ||
75 | dosum (argv[1]); | |
76 | ||
77 | return 0; | |
78 | } |