mirror of
https://github.com/torvalds/linux.git
synced 2024-11-18 18:11:56 +00:00
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/*
|
|
* Copyright (C) International Business Machines Corp., 2001
|
|
*
|
|
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#ifndef _H_ENDIAN24
|
|
#define _H_ENDIAN24
|
|
|
|
/*
|
|
* endian24.h:
|
|
*
|
|
* Endian conversion for 24-byte data
|
|
*
|
|
*/
|
|
#define __swab24(x) \
|
|
({ \
|
|
__u32 __x = (x); \
|
|
((__u32)( \
|
|
((__x & (__u32)0x000000ffUL) << 16) | \
|
|
(__x & (__u32)0x0000ff00UL) | \
|
|
((__x & (__u32)0x00ff0000UL) >> 16) )); \
|
|
})
|
|
|
|
#if (defined(__KERNEL__) && defined(__LITTLE_ENDIAN)) || (defined(__BYTE_ORDER) && (__BYTE_ORDER == __LITTLE_ENDIAN))
|
|
#define __cpu_to_le24(x) ((__u32)(x))
|
|
#define __le24_to_cpu(x) ((__u32)(x))
|
|
#else
|
|
#define __cpu_to_le24(x) __swab24(x)
|
|
#define __le24_to_cpu(x) __swab24(x)
|
|
#endif
|
|
|
|
#ifdef __KERNEL__
|
|
#define cpu_to_le24 __cpu_to_le24
|
|
#define le24_to_cpu __le24_to_cpu
|
|
#endif
|
|
|
|
#endif /* !_H_ENDIAN24 */
|