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Harvey Harrison1af84a62009-01-06 14:56:25 -08001#ifndef __ASM_SH_SWAB_H
2#define __ASM_SH_SWAB_H
3
4/*
5 * Copyright (C) 1999 Niibe Yutaka
6 * Copyright (C) 2000, 2001 Paolo Alberelli
7 */
8#include <linux/compiler.h>
9#include <linux/types.h>
Paul Mundtf8f06bc2009-06-14 23:21:54 +090010#include <asm-generic/swab.h>
Harvey Harrison1af84a62009-01-06 14:56:25 -080011
12static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
13{
14 __asm__(
15#ifdef __SH5__
Paul Mundt567bb8f2009-05-10 14:25:39 +090016 "byterev %1, %0\n\t"
Harvey Harrison1af84a62009-01-06 14:56:25 -080017 "shari %0, 32, %0"
18#else
Paul Mundt567bb8f2009-05-10 14:25:39 +090019 "swap.b %1, %0\n\t"
Harvey Harrison1af84a62009-01-06 14:56:25 -080020 "swap.w %0, %0\n\t"
21 "swap.b %0, %0"
22#endif
23 : "=r" (x)
Paul Mundt567bb8f2009-05-10 14:25:39 +090024 : "r" (x));
Harvey Harrison1af84a62009-01-06 14:56:25 -080025
26 return x;
27}
28#define __arch_swab32 __arch_swab32
29
30static inline __attribute_const__ __u16 __arch_swab16(__u16 x)
31{
32 __asm__(
33#ifdef __SH5__
Paul Mundt567bb8f2009-05-10 14:25:39 +090034 "byterev %1, %0\n\t"
Harvey Harrison1af84a62009-01-06 14:56:25 -080035 "shari %0, 32, %0"
36#else
Paul Mundt567bb8f2009-05-10 14:25:39 +090037 "swap.b %1, %0"
Harvey Harrison1af84a62009-01-06 14:56:25 -080038#endif
39 : "=r" (x)
Paul Mundt567bb8f2009-05-10 14:25:39 +090040 : "r" (x));
Harvey Harrison1af84a62009-01-06 14:56:25 -080041
42 return x;
43}
44#define __arch_swab16 __arch_swab16
45
46static inline __u64 __arch_swab64(__u64 val)
47{
48 union {
49 struct { __u32 a,b; } s;
50 __u64 u;
51 } v, w;
52 v.u = val;
53 w.s.b = __arch_swab32(v.s.a);
54 w.s.a = __arch_swab32(v.s.b);
55 return w.u;
56}
57#define __arch_swab64 __arch_swab64
58
59#endif /* __ASM_SH_SWAB_H */