diff options
| author | Chris Zankel <czankel@tensilica.com> | 2005-06-23 22:01:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-24 00:05:22 -0700 |
| commit | 9a8fd5589902153a134111ed7a40f9cca1f83254 (patch) | |
| tree | 6f7a06de25bdf0b2d94623794c2cbbc66b5a77f6 /include/asm-xtensa/unaligned.h | |
| parent | 3f65ce4d141e435e54c20ed2379d983d362a2cb5 (diff) | |
[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 6
The attached patches provides part 6 of an architecture implementation for the
Tensilica Xtensa CPU series.
Signed-off-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-xtensa/unaligned.h')
| -rw-r--r-- | include/asm-xtensa/unaligned.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/asm-xtensa/unaligned.h b/include/asm-xtensa/unaligned.h new file mode 100644 index 00000000000..28220890d0a --- /dev/null +++ b/include/asm-xtensa/unaligned.h @@ -0,0 +1,28 @@ +/* + * 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 */ |