2 * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
3 * Copyright (C) 2007 The Regents of the University of California.
4 * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
5 * Written by Brian Behlendorf <behlendorf1@llnl.gov>.
8 * This file is part of the SPL, Solaris Porting Layer.
10 * The SPL is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
15 * The SPL is distributed in the hope that it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
20 * You should have received a copy of the GNU General Public License along
21 * with the SPL. If not, see <http://www.gnu.org/licenses/>.
24 #ifndef _SPL_BYTEORDER_H
25 #define _SPL_BYTEORDER_H
27 #include <asm/byteorder.h>
29 #if defined(__BIG_ENDIAN) && !defined(_ZFS_BIG_ENDIAN)
30 #define _ZFS_BIG_ENDIAN
33 #if defined(__LITTLE_ENDIAN) && !defined(_ZFS_LITTLE_ENDIAN)
34 #define _ZFS_LITTLE_ENDIAN
37 #include <sys/isa_defs.h>
39 #define BSWAP_8(x) ((x) & 0xff)
40 #define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))
41 #define BSWAP_32(x) ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16))
42 #define BSWAP_64(x) ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32))
44 #define LE_16(x) cpu_to_le16(x)
45 #define LE_32(x) cpu_to_le32(x)
46 #define LE_64(x) cpu_to_le64(x)
47 #define BE_16(x) cpu_to_be16(x)
48 #define BE_32(x) cpu_to_be32(x)
49 #define BE_64(x) cpu_to_be64(x)
55 (((uint16_t)BE_IN8(xa) << 8) | BE_IN8((uint8_t *)(xa)+1))
58 (((uint32_t)BE_IN16(xa) << 16) | BE_IN16((uint8_t *)(xa)+2))
60 #ifdef _ZFS_BIG_ENDIAN
61 static __inline__ uint64_t
67 static __inline__ uint64_t
73 static __inline__ uint64_t
76 return ((((uint64_t)htonl(n)) << 32) + htonl(n >> 32));
79 static __inline__ uint64_t
82 return ((((uint64_t)ntohl(n)) << 32) + ntohl(n >> 32));
86 #endif /* SPL_BYTEORDER_H */