| Arnd Bergmann | 5b17e1c | 2009-05-13 22:56:30 +0000 | [diff] [blame] | 1 | #ifndef __ASM_GENERIC_UACCESS_UNALIGNED_H |
| 2 | #define __ASM_GENERIC_UACCESS_UNALIGNED_H |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| Arnd Bergmann | 5b17e1c | 2009-05-13 22:56:30 +0000 | [diff] [blame] | 26 | #endif /* __ASM_GENERIC_UACCESS_UNALIGNED_H */ |