1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2002 Thomas Moestl <tmm@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28 #ifndef FAT_ENDIAN_H
29 #define FAT_ENDIAN_H
30
31
32 // Modified to support the Haiku FAT driver.
33
34 #ifndef FS_SHELL
35 #include <ByteOrder.h>
36 #endif
37
38
39 static __inline uint16_t
le16dec(const void * pp)40 le16dec(const void* pp)
41 {
42 uint16 const* twoBytes = (uint16 const*)pp;
43 return B_LENDIAN_TO_HOST_INT16(*twoBytes);
44 }
45
46
47 static __inline uint32_t
le32dec(const void * pp)48 le32dec(const void* pp)
49 {
50 uint32 const* fourBytes = (uint32 const*)pp;
51 return B_LENDIAN_TO_HOST_INT32(*fourBytes);
52 }
53
54
55 static __inline void
le16enc(void * pp,uint16_t u)56 le16enc(void* pp, uint16_t u)
57 {
58 uint16* twoBytes = (uint16*)pp;
59 *twoBytes = B_HOST_TO_LENDIAN_INT16(u);
60 }
61
62
63 static __inline void
le32enc(void * pp,uint32_t u)64 le32enc(void* pp, uint32_t u)
65 {
66 uint32* fourBytes = (uint32*)pp;
67 *fourBytes = B_HOST_TO_LENDIAN_INT32(u);
68 }
69
70
71 #endif // FAT_ENDIAN_H
72