ia64/linux-2.6.18-xen.hg

view include/asm-generic/uaccess.h @ 782:9ab1c319531f

merge with linux-2.6.18-xen.hg
author Isaku Yamahata <yamahata@valinux.co.jp>
date Wed Jan 28 13:07:23 2009 +0900 (2009-01-28)
parents 831230e53067
children
line source
1 #ifndef _ASM_GENERIC_UACCESS_H_
2 #define _ASM_GENERIC_UACCESS_H_
4 /*
5 * This macro should be used instead of __get_user() when accessing
6 * values at locations that are not known to be aligned.
7 */
8 #define __get_user_unaligned(x, ptr) \
9 ({ \
10 __typeof__ (*(ptr)) __x; \
11 __copy_from_user(&__x, (ptr), sizeof(*(ptr))) ? -EFAULT : 0; \
12 (x) = __x; \
13 })
16 /*
17 * This macro should be used instead of __put_user() when accessing
18 * values at locations that are not known to be aligned.
19 */
20 #define __put_user_unaligned(x, ptr) \
21 ({ \
22 __typeof__ (*(ptr)) __x = (x); \
23 __copy_to_user((ptr), &__x, sizeof(*(ptr))) ? -EFAULT : 0; \
24 })
26 #endif /* _ASM_GENERIC_UACCESS_H */