2 * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20 FILE_LICENCE ( GPL2_OR_LATER );
24 * Byte-order swapping test functions
28 /* Forcibly enable assertions */
34 #include <ipxe/test.h>
36 /* Provide global functions to allow inspection of generated assembly code */
38 uint16_t test_bswap16 ( uint16_t x ) {
39 return __bswap_16 ( x );
42 uint32_t test_bswap32 ( uint32_t x ) {
43 return __bswap_32 ( x );
46 uint64_t test_bswap64 ( uint64_t x ) {
47 return __bswap_64 ( x );
50 void test_bswap16s ( uint16_t *x ) {
54 void test_bswap32s ( uint32_t *x ) {
58 void test_bswap64s ( uint64_t *x ) {
63 * Perform byte-order swapping
66 static void byteswap_test_exec ( void ) {
71 ok ( test_bswap16 ( 0x1234 ) == 0x3412 );
72 ok ( test_bswap32 ( 0x12345678UL ) == 0x78563412UL );
73 ok ( test_bswap64 ( 0x123456789abcdef0ULL ) == 0xf0debc9a78563412ULL );
76 test_bswap16s ( &test16 );
77 ok ( test16 == 0xcdab );
79 test32 = 0xabcdef01UL;
80 test_bswap32s ( &test32 );
81 ok ( test32 == 0x01efcdabUL );
83 test64 = 0xabcdef0123456789ULL;
84 test_bswap64s ( &test64 );
85 ok ( test64 == 0x8967452301efcdabULL );
88 /** Byte-order swapping self-test */
89 struct self_test byteswap_test __self_test = {
91 .exec = byteswap_test_exec,