1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1996, 99, 2003 by Ralf Baechle
7 */
8#ifndef _ASM_BYTEORDER_H
9#define _ASM_BYTEORDER_H
10
11#include <linux/compiler.h>
12#include <asm/types.h>
13
14#ifdef __GNUC__
15
16#ifdef CONFIG_CPU_MIPSR2
17
18static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
19{
20	__asm__(
21	"	wsbh	%0, %1			\n"
22	: "=r" (x)
23	: "r" (x));
24
25	return x;
26}
27#define __arch__swab16(x)	___arch__swab16(x)
28
29static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
30{
31	__asm__(
32	"	wsbh	%0, %1			\n"
33	"	rotr	%0, %0, 16		\n"
34	: "=r" (x)
35	: "r" (x));
36
37	return x;
38}
39#define __arch__swab32(x)	___arch__swab32(x)
40
41#ifdef CONFIG_CPU_MIPS64_R2
42
43static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x)
44{
45	__asm__(
46	"	dsbh	%0, %1			\n"
47	"	dshd	%0, %0			\n"
48	"	drotr	%0, %0, 32		\n"
49	: "=r" (x)
50	: "r" (x));
51
52	return x;
53}
54
55#define __arch__swab64(x)	___arch__swab64(x)
56
57#endif /* CONFIG_CPU_MIPS64_R2 */
58
59#endif /* CONFIG_CPU_MIPSR2 */
60
61#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
62#  define __BYTEORDER_HAS_U64__
63#  define __SWAB_64_THRU_32__
64#endif
65
66#endif /* __GNUC__ */
67
68#if defined(__MIPSEB__)
69#  include <linux/byteorder/big_endian.h>
70#elif defined(__MIPSEL__)
71#  include <linux/byteorder/little_endian.h>
72#else
73#  error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???"
74#endif
75
76#endif /* _ASM_BYTEORDER_H */
77