diff options
Diffstat (limited to 'gcc/genchecksum.c')
-rw-r--r-- | gcc/genchecksum.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/gcc/genchecksum.c b/gcc/genchecksum.c new file mode 100644 index 00000000000..3a7ee4b7226 --- /dev/null +++ b/gcc/genchecksum.c @@ -0,0 +1,79 @@ +/* APPLE LOCAL begin mainline 4.1 2005-06-17 3988498 */ +/* Generate checksums of executables for PCH validation + Copyright (C) 2005 + Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 2, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING. If not, write to the Free +Software Foundation, 59 Temple Place - Suite 330, Boston, MA +02111-1307, USA. */ + +#include "bconfig.h" +#include "system.h" +#include "md5.h" + +static void +usage (void) +{ + fputs ("Usage: genchecksums <filename>\n", stderr); +} + +static void +dosum (const char *file) +{ + FILE *f; + unsigned char result[16]; + int i; + + f = fopen (file, "rb"); + if (!f) + { + fprintf (stderr, "opening %s: %s\n", file, xstrerror (errno)); + exit (1); + } + + /* Some executable formats have timestamps in the first 16 bytes, yuck. */ + if (fseek (f, 16, SEEK_SET) != 0) + { + fprintf (stderr, "seeking in %s: %s\n", file, xstrerror (errno)); + exit (1); + } + + if (md5_stream (f, result) != 0 + || fclose (f) != 0) + { + fprintf (stderr, "reading %s: %s\n", file, xstrerror (errno)); + exit (1); + } + + fputs ("const unsigned char executable_checksum[16] = { ", stdout); + for (i = 0; i < 16; i++) + printf ("%#02x%s", result[i], i == 15 ? " };\n" : ", "); +} + +int +main (int argc, char ** argv) +{ + if (argc != 2) + { + usage (); + return 1; + } + + dosum (argv[1]); + + return 0; +} +/* APPLE LOCAL end mainline 4.1 2005-06-17 3988498 */ |