1#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>
10#include <asm-generic/swab.h>
11
12static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
13{
14	__asm__(
15#ifdef __SH5__
16		"byterev	%1, %0\n\t"
17		"shari		%0, 32, %0"
18#else
19		"swap.b		%1, %0\n\t"
20		"swap.w		%0, %0\n\t"
21		"swap.b		%0, %0"
22#endif
23		: "=r" (x)
24		: "r" (x));
25
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__
34		"byterev	%1, %0\n\t"
35		"shari		%0, 32, %0"
36#else
37		"swap.b		%1, %0"
38#endif
39		: "=r" (x)
40		:  "r" (x));
41
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 */
60