diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2007-10-15 13:57:47 +0200 |
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committer | Thomas Gleixner <tglx@inhelltoy.tec.linutronix.de> | 2007-10-17 20:17:10 +0200 |
commit | 003a46cfff308ee0d879dfa89b9a7c65b2a481bf (patch) | |
tree | 234552110912d4b9d6519474823e98e1a1726d16 /include/asm-x86/unaligned.h | |
parent | 217d115cd5d7d2bef7db7839b93ce5dc2867c392 (diff) |
x86: unify some more trivial include/asm-x86/ 32/64 variants
Scripted unification.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86/unaligned.h')
-rw-r--r-- | include/asm-x86/unaligned.h | 42 |
1 files changed, 37 insertions, 5 deletions
diff --git a/include/asm-x86/unaligned.h b/include/asm-x86/unaligned.h index 68067150fbc..913598d4f76 100644 --- a/include/asm-x86/unaligned.h +++ b/include/asm-x86/unaligned.h @@ -1,5 +1,37 @@ -#ifdef CONFIG_X86_32 -# include "unaligned_32.h" -#else -# include "unaligned_64.h" -#endif +#ifndef _ASM_X86_UNALIGNED_H +#define _ASM_X86_UNALIGNED_H + +/* + * The x86 can do unaligned accesses itself. + * + * The strange macros are there to make sure these can't + * be misused in a way that makes them not work on other + * architectures where unaligned accesses aren't as simple. + */ + +/** + * get_unaligned - get value from possibly mis-aligned location + * @ptr: pointer to value + * + * This macro should be used for accessing values larger in size than + * single bytes at locations that are expected to be improperly aligned, + * e.g. retrieving a u16 value from a location not u16-aligned. + * + * Note that unaligned accesses can be very expensive on some architectures. + */ +#define get_unaligned(ptr) (*(ptr)) + +/** + * put_unaligned - put value to a possibly mis-aligned location + * @val: value to place + * @ptr: pointer to location + * + * This macro should be used for placing values larger in size than + * single bytes at locations that are expected to be improperly aligned, + * e.g. writing a u16 value to a location not u16-aligned. + * + * Note that unaligned accesses can be very expensive on some architectures. + */ +#define put_unaligned(val, ptr) ((void)( *(ptr) = (val) )) + +#endif /* _ASM_X86_UNALIGNED_H */ |