From 9a8fd5589902153a134111ed7a40f9cca1f83254 Mon Sep 17 00:00:00 2001 From: Chris Zankel Date: Thu, 23 Jun 2005 22:01:26 -0700 Subject: [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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-xtensa/unaligned.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 include/asm-xtensa/unaligned.h (limited to 'include/asm-xtensa/unaligned.h') 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 + +/* 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 */ -- cgit v1.2.3