diff options
author | Harvey Harrison <harvey.harrison@gmail.com> | 2009-01-06 17:56:30 -0500 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-06 21:10:28 -0500 |
commit | cfcac2f7dd1a580f0fb7b82bbe3eb14c21c87459 (patch) | |
tree | 1bcdd9e3721bba42c816effbdba999dac5b54372 /arch/blackfin/include/asm/byteorder.h | |
parent | af8e24e96facfd42eb12d13c8120e3e95de40aba (diff) |
blackfin: introduce asm/swab.h
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/blackfin/include/asm/byteorder.h')
-rw-r--r-- | arch/blackfin/include/asm/byteorder.h | 43 |
1 files changed, 1 insertions, 42 deletions
diff --git a/arch/blackfin/include/asm/byteorder.h b/arch/blackfin/include/asm/byteorder.h index 6a673d42da18..b9e797a497b4 100644 --- a/arch/blackfin/include/asm/byteorder.h +++ b/arch/blackfin/include/asm/byteorder.h | |||
@@ -1,48 +1,7 @@ | |||
1 | #ifndef _BLACKFIN_BYTEORDER_H | 1 | #ifndef _BLACKFIN_BYTEORDER_H |
2 | #define _BLACKFIN_BYTEORDER_H | 2 | #define _BLACKFIN_BYTEORDER_H |
3 | 3 | ||
4 | #include <asm/types.h> | 4 | #include <asm/swab.h> |
5 | #include <linux/compiler.h> | ||
6 | |||
7 | #ifdef __GNUC__ | ||
8 | |||
9 | static __inline__ __attribute_const__ __u32 ___arch__swahb32(__u32 xx) | ||
10 | { | ||
11 | __u32 tmp; | ||
12 | __asm__("%1 = %0 >> 8 (V);\n\t" | ||
13 | "%0 = %0 << 8 (V);\n\t" | ||
14 | "%0 = %0 | %1;\n\t" | ||
15 | : "+d"(xx), "=&d"(tmp)); | ||
16 | return xx; | ||
17 | } | ||
18 | |||
19 | static __inline__ __attribute_const__ __u32 ___arch__swahw32(__u32 xx) | ||
20 | { | ||
21 | __u32 rv; | ||
22 | __asm__("%0 = PACK(%1.L, %1.H);\n\t": "=d"(rv): "d"(xx)); | ||
23 | return rv; | ||
24 | } | ||
25 | |||
26 | #define __arch__swahb32(x) ___arch__swahb32(x) | ||
27 | #define __arch__swahw32(x) ___arch__swahw32(x) | ||
28 | #define __arch__swab32(x) ___arch__swahb32(___arch__swahw32(x)) | ||
29 | |||
30 | static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 xx) | ||
31 | { | ||
32 | __u32 xw = xx; | ||
33 | __asm__("%0 <<= 8;\n %0.L = %0.L + %0.H (NS);\n": "+d"(xw)); | ||
34 | return (__u16)xw; | ||
35 | } | ||
36 | |||
37 | #define __arch__swab16(x) ___arch__swab16(x) | ||
38 | |||
39 | #endif | ||
40 | |||
41 | #if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__) | ||
42 | # define __BYTEORDER_HAS_U64__ | ||
43 | # define __SWAB_64_THRU_32__ | ||
44 | #endif | ||
45 | |||
46 | #include <linux/byteorder/little_endian.h> | 5 | #include <linux/byteorder/little_endian.h> |
47 | 6 | ||
48 | #endif /* _BLACKFIN_BYTEORDER_H */ | 7 | #endif /* _BLACKFIN_BYTEORDER_H */ |