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_SWAB_H
 9#define _ASM_SWAB_H
10
11#include <linux/compiler.h>
12#include <linux/types.h>
13
14#define __SWAB_64_THRU_32__
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 __arch_swab16
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 __arch_swab32
40
41/*
42 * Having already checked for CONFIG_CPU_MIPSR2, enable the
43 * optimized version for 64-bit kernel on r2 CPUs.
44 */
45#ifdef CONFIG_64BIT
46static inline __attribute_const__ __u64 __arch_swab64(__u64 x)
47{
48	__asm__(
49	"	dsbh	%0, %1\n"
50	"	dshd	%0, %0"
51	: "=r" (x)
52	: "r" (x));
53
54	return x;
55}
56#define __arch_swab64 __arch_swab64
57#endif /* CONFIG_64BIT */
58#endif /* CONFIG_CPU_MIPSR2 */
59#endif /* _ASM_SWAB_H */

 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_SWAB_H
 9#define _ASM_SWAB_H
10
11#include <linux/compiler.h>
12#include <linux/types.h>
13
14#define __SWAB_64_THRU_32__
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 __arch_swab16
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 __arch_swab32
40
41/*
42 * Having already checked for CONFIG_CPU_MIPSR2, enable the
43 * optimized version for 64-bit kernel on r2 CPUs.
44 */
45#ifdef CONFIG_64BIT
46static inline __attribute_const__ __u64 __arch_swab64(__u64 x)
47{
48	__asm__(
49	"	dsbh	%0, %1\n"
50	"	dshd	%0, %0"
51	: "=r" (x)
52	: "r" (x));
53
54	return x;
55}
56#define __arch_swab64 __arch_swab64
57#endif /* CONFIG_64BIT */
58#endif /* CONFIG_CPU_MIPSR2 */
59#endif /* _ASM_SWAB_H */