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https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.2.2/] [gcc/] [genchecksum.c] - Rev 193
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/* Generate checksums of executables for PCH validation Copyright (C) 2005, 2007 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 3, 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 COPYING3. If not see <http://www.gnu.org/licenses/>. */ #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; }
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