29 lines
767 B
C
29 lines
767 B
C
|
/*
|
||
|
|
* include/asm-xtensa/unaligned.h
|
||
|
|
*
|
||
|
|
* Xtensa doesn't handle unaligned accesses efficiently.
|
||
|
|
*
|
||
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
||
|
|
* License. See the file "COPYING" in the main directory of this archive
|
||
|
|
* for more details.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2001 - 2005 Tensilica Inc.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _XTENSA_UNALIGNED_H
|
||
|
|
#define _XTENSA_UNALIGNED_H
|
||
|
|
|
||
|
|
#include <linux/string.h>
|
||
|
|
|
||
|
|
/* Use memmove here, so gcc does not insert a __builtin_memcpy. */
|
||
|
|
|
||
|
|
#define get_unaligned(ptr) \
|
||
|
|
({ __typeof__(*(ptr)) __tmp; memmove(&__tmp, (ptr), sizeof(*(ptr))); __tmp; })
|
||
|
|
|
||
|
|
#define put_unaligned(val, ptr) \
|
||
|
|
({ __typeof__(*(ptr)) __tmp = (val); \
|
||
|
|
memmove((ptr), &__tmp, sizeof(*(ptr))); \
|
||
|
|
(void)0; })
|
||
|
|
|
||
|
|
#endif /* _XTENSA_UNALIGNED_H */
|