Merge branches 'devel-stable', 'entry', 'fixes', 'mach-types', 'misc' and 'smp-hotplu...
[linux-3.10.git] / include / asm-generic / uaccess-unaligned.h
1 #ifndef __ASM_GENERIC_UACCESS_UNALIGNED_H
2 #define __ASM_GENERIC_UACCESS_UNALIGNED_H
3
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 })
14
15
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 })
25
26 #endif /* __ASM_GENERIC_UACCESS_UNALIGNED_H */