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/*
* Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program 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 of the
* License, or (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
* You can also choose to distribute this program under the terms of
* the Unmodified Binary Distribution Licence (as given in the file
* COPYING.UBDL), provided that you have satisfied its requirements.
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
/** @file
*
* CRC32 tests
*
*
* Test vectors generated using Perl's Digest::CRC:
*
* use Digest::CRC qw ( crc );
*
* printf "%#08x", crc ( $data, 32, $seed, 0, 1, 0x04c11db7, 1 );
*
*/
/* Forcibly enable assertions */
#undef NDEBUG
#include <stdint.h>
#include <ipxe/crc32.h>
#include <ipxe/test.h>
/** Define inline data */
#define DATA(...) { __VA_ARGS__ }
/** A CRC32 test */
struct crc32_test {
/** Test data */
const void *data;
/** Length of test data */
size_t len;
/** Seed */
uint32_t seed;
/** Expected CRC32 */
uint32_t crc32;
};
/**
* Define a CRC32 test
*
* @v name Test name
* @v DATA Test data
* @v SEED Seed
* @v CRC32 Expected CRC32
* @ret test CRC32 test
*/
#define CRC32_TEST( name, DATA, SEED, CRC32 ) \
static const uint8_t name ## _data[] = DATA; \
static struct crc32_test name = { \
.data = name ## _data, \
.len = sizeof ( name ## _data ), \
.seed = SEED, \
.crc32 = CRC32, \
};
/**
* Report a CRC32 test result
*
* @v test CRC32 test
*/
#define crc32_ok( test ) do { \
uint32_t crc32; \
crc32 = crc32_le ( (test)->seed, (test)->data, (test)->len ); \
ok ( crc32 == (test)->crc32 ); \
} while ( 0 )
/* CRC32 tests */
CRC32_TEST ( empty_test,
DATA ( ),
0x12345678UL, 0x12345678UL );
CRC32_TEST ( hw_test,
DATA ( 'h', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd' ),
0xffffffffUL, 0xf2b5ee7aUL );
CRC32_TEST ( hw_split_part1_test,
DATA ( 'h', 'e', 'l', 'l', 'o' ),
0xffffffffUL, 0xc9ef5979UL );
CRC32_TEST ( hw_split_part2_test,
DATA ( ' ', 'w', 'o', 'r', 'l', 'd' ),
0xc9ef5979UL, 0xf2b5ee7aUL );
/**
* Perform CRC32 self-tests
*
*/
static void crc32_test_exec ( void ) {
crc32_ok ( &empty_test );
crc32_ok ( &hw_test );
crc32_ok ( &hw_split_part1_test );
crc32_ok ( &hw_split_part2_test );
}
/** CRC32 self-test */
struct self_test crc32_test __self_test = {
.name = "crc32",
.exec = crc32_test_exec,
};
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