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1da177e4 LT |
1 | #ifndef __ASM_SH_BYTEORDER_H |
2 | #define __ASM_SH_BYTEORDER_H | |
3 | ||
4 | /* | |
5 | * Copyright (C) 1999 Niibe Yutaka | |
6 | */ | |
7 | ||
8 | #include <asm/types.h> | |
9 | #include <linux/compiler.h> | |
10 | ||
11 | static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) | |
12 | { | |
13 | __asm__("swap.b %0, %0\n\t" | |
14 | "swap.w %0, %0\n\t" | |
15 | "swap.b %0, %0" | |
16 | : "=r" (x) | |
17 | : "0" (x)); | |
18 | return x; | |
19 | } | |
20 | ||
21 | static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x) | |
22 | { | |
23 | __asm__("swap.b %0, %0" | |
24 | : "=r" (x) | |
25 | : "0" (x)); | |
26 | return x; | |
27 | } | |
28 | ||
29 | static inline __u64 ___arch__swab64(__u64 val) | |
30 | { | |
31 | union { | |
32 | struct { __u32 a,b; } s; | |
33 | __u64 u; | |
34 | } v, w; | |
35 | v.u = val; | |
36 | w.s.b = ___arch__swab32(v.s.a); | |
37 | w.s.a = ___arch__swab32(v.s.b); | |
38 | return w.u; | |
39 | } | |
40 | ||
41 | #define __arch__swab64(x) ___arch__swab64(x) | |
42 | #define __arch__swab32(x) ___arch__swab32(x) | |
43 | #define __arch__swab16(x) ___arch__swab16(x) | |
44 | ||
45 | #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) | |
46 | # define __BYTEORDER_HAS_U64__ | |
47 | # define __SWAB_64_THRU_32__ | |
48 | #endif | |
49 | ||
50 | #ifdef __LITTLE_ENDIAN__ | |
51 | #include <linux/byteorder/little_endian.h> | |
52 | #else | |
53 | #include <linux/byteorder/big_endian.h> | |
54 | #endif | |
55 | ||
56 | #endif /* __ASM_SH_BYTEORDER_H */ |