diff options
Diffstat (limited to 'include/asm-x86/unaligned.h')
-rw-r--r-- | include/asm-x86/unaligned.h | 31 |
1 files changed, 4 insertions, 27 deletions
diff --git a/include/asm-x86/unaligned.h b/include/asm-x86/unaligned.h index d270ffe72759..a7bd416b4763 100644 --- a/include/asm-x86/unaligned.h +++ b/include/asm-x86/unaligned.h | |||
@@ -3,35 +3,12 @@ | |||
3 | 3 | ||
4 | /* | 4 | /* |
5 | * The x86 can do unaligned accesses itself. | 5 | * The x86 can do unaligned accesses itself. |
6 | * | ||
7 | * The strange macros are there to make sure these can't | ||
8 | * be misused in a way that makes them not work on other | ||
9 | * architectures where unaligned accesses aren't as simple. | ||
10 | */ | 6 | */ |
11 | 7 | ||
12 | /** | 8 | #include <linux/unaligned/access_ok.h> |
13 | * get_unaligned - get value from possibly mis-aligned location | 9 | #include <linux/unaligned/generic.h> |
14 | * @ptr: pointer to value | ||
15 | * | ||
16 | * This macro should be used for accessing values larger in size than | ||
17 | * single bytes at locations that are expected to be improperly aligned, | ||
18 | * e.g. retrieving a u16 value from a location not u16-aligned. | ||
19 | * | ||
20 | * Note that unaligned accesses can be very expensive on some architectures. | ||
21 | */ | ||
22 | #define get_unaligned(ptr) (*(ptr)) | ||
23 | 10 | ||
24 | /** | 11 | #define get_unaligned __get_unaligned_le |
25 | * put_unaligned - put value to a possibly mis-aligned location | 12 | #define put_unaligned __put_unaligned_le |
26 | * @val: value to place | ||
27 | * @ptr: pointer to location | ||
28 | * | ||
29 | * This macro should be used for placing values larger in size than | ||
30 | * single bytes at locations that are expected to be improperly aligned, | ||
31 | * e.g. writing a u16 value to a location not u16-aligned. | ||
32 | * | ||
33 | * Note that unaligned accesses can be very expensive on some architectures. | ||
34 | */ | ||
35 | #define put_unaligned(val, ptr) ((void)(*(ptr) = (val))) | ||
36 | 13 | ||
37 | #endif /* _ASM_X86_UNALIGNED_H */ | 14 | #endif /* _ASM_X86_UNALIGNED_H */ |