1/*	$NetBSD: xlate.h,v 1.1.1.1 2008/12/22 00:18:44 haad Exp $	*/
2
3/*
4 * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
5 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
6 *
7 * This file is part of LVM2.
8 *
9 * This copyrighted material is made available to anyone wishing to use,
10 * modify, copy, or redistribute it subject to the terms and conditions
11 * of the GNU Lesser General Public License v.2.1.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program; if not, write to the Free Software Foundation,
15 * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16 */
17
18#ifndef _LVM_XLATE_H
19#define _LVM_XLATE_H
20
21#ifdef linux
22#  include <endian.h>
23#  include <byteswap.h>
24#elif defined(__NetBSD__)
25#  include <sys/endian.h>
26#  define bswap_16(x) bswap16(x)
27#  define bswap_32(x) bswap32(x)
28#  define bswap_64(x) bswap64(x)
29#else
30#  include <machine/endian.h>
31#  define bswap_16(x) (((x) & 0x00ffU) << 8 | \
32		       ((x) & 0xff00U) >> 8)
33#  define bswap_32(x) (((x) & 0x000000ffU) << 24 | \
34		       ((x) & 0xff000000U) >> 24 | \
35		       ((x) & 0x0000ff00U) << 8  | \
36		       ((x) & 0x00ff0000U) >> 8)
37#  define bswap_64(x) (((x) & 0x00000000000000ffULL) << 56 | \
38		       ((x) & 0xff00000000000000ULL) >> 56 | \
39		       ((x) & 0x000000000000ff00ULL) << 40 | \
40		       ((x) & 0x00ff000000000000ULL) >> 40 | \
41		       ((x) & 0x0000000000ff0000ULL) << 24 | \
42		       ((x) & 0x0000ff0000000000ULL) >> 24 | \
43		       ((x) & 0x00000000ff000000ULL) << 8 | \
44		       ((x) & 0x000000ff00000000ULL) >> 8)
45#endif
46
47#if BYTE_ORDER == LITTLE_ENDIAN
48#  define xlate16(x) (x)
49#  define xlate32(x) (x)
50#  define xlate64(x) (x)
51#  define xlate16_be(x) bswap_16(x)
52#  define xlate32_be(x) bswap_32(x)
53#  define xlate64_be(x) bswap_64(x)
54#elif BYTE_ORDER == BIG_ENDIAN
55#  define xlate16(x) bswap_16(x)
56#  define xlate32(x) bswap_32(x)
57#  define xlate64(x) bswap_64(x)
58#  define xlate16_be(x) (x)
59#  define xlate32_be(x) (x)
60#  define xlate64_be(x) (x)
61#else
62#  include <asm/byteorder.h>
63#  define xlate16(x) __cpu_to_le16((x))
64#  define xlate32(x) __cpu_to_le32((x))
65#  define xlate64(x) __cpu_to_le64((x))
66#  define xlate16_be(x) __cpu_to_be16((x))
67#  define xlate32_be(x) __cpu_to_be32((x))
68#  define xlate64_be(x) __cpu_to_be64((x))
69#endif
70
71#endif
72