Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
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/config.h>
12#include <linux/compiler.h>
13#include <asm/types.h>
14
15#ifdef __GNUC__
16
17#ifdef CONFIG_CPU_MIPSR2
18
19static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
20{
21 __asm__(
22 " wsbh %0, %1 \n"
23 : "=r" (x)
24 : "r" (x));
25
26 return x;
27}
28#define __arch__swab16(x) ___arch__swab16(x)
29
30static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
31{
32 __asm__(
33 " wsbh %0, %1 \n"
34 " rotr %0, %0, 16 \n"
35 : "=r" (x)
36 : "r" (x));
37
38 return x;
39}
40#define __arch__swab32(x) ___arch__swab32(x)
41
42#endif /* CONFIG_CPU_MIPSR2 */
43
44#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
45# define __BYTEORDER_HAS_U64__
46# define __SWAB_64_THRU_32__
47#endif
48
49#endif /* __GNUC__ */
50
51#if defined (__MIPSEB__)
52# include <linux/byteorder/big_endian.h>
53#elif defined (__MIPSEL__)
54# include <linux/byteorder/little_endian.h>
55#else
56# error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???"
57#endif
58
59#endif /* _ASM_BYTEORDER_H */