| Chris Zankel | 9a8fd55 | 2005-06-23 22:01:26 -0700 | [diff] [blame] | 1 | /* |
| 2 | * include/asm-xtensa/unaligned.h |
| 3 | * |
| 4 | * Xtensa doesn't handle unaligned accesses efficiently. |
| 5 | * |
| 6 | * This file is subject to the terms and conditions of the GNU General Public |
| 7 | * License. See the file "COPYING" in the main directory of this archive |
| 8 | * for more details. |
| 9 | * |
| 10 | * Copyright (C) 2001 - 2005 Tensilica Inc. |
| 11 | */ |
| 12 | |
| 13 | #ifndef _XTENSA_UNALIGNED_H |
| 14 | #define _XTENSA_UNALIGNED_H |
| 15 | |
| 16 | #include <linux/string.h> |
| 17 | |
| 18 | /* Use memmove here, so gcc does not insert a __builtin_memcpy. */ |
| 19 | |
| 20 | #define get_unaligned(ptr) \ |
| 21 | ({ __typeof__(*(ptr)) __tmp; memmove(&__tmp, (ptr), sizeof(*(ptr))); __tmp; }) |
| 22 | |
| 23 | #define put_unaligned(val, ptr) \ |
| 24 | ({ __typeof__(*(ptr)) __tmp = (val); \ |
| 25 | memmove((ptr), &__tmp, sizeof(*(ptr))); \ |
| 26 | (void)0; }) |
| 27 | |
| 28 | #endif /* _XTENSA_UNALIGNED_H */ |