1/* $Id: byteorder.h,v 1.1.1.1 2008/10/15 03:27:16 james26_jang Exp $ */
2
3#ifndef _CRIS_BYTEORDER_H
4#define _CRIS_BYTEORDER_H
5
6#include <asm/types.h>
7
8#ifdef __GNUC__
9
10/* we just define these two (as we can do the swap in a single
11 * asm instruction in CRIS) and the arch-independent files will put
12 * them together into ntohl etc.
13 */
14
15static __inline__ __const__ __u32 ___arch__swab32(__u32 x)
16{
17	__asm__ ("swapwb %0" : "=r" (x) : "0" (x));
18
19	return(x);
20}
21
22static __inline__ __const__ __u16 ___arch__swab16(__u16 x)
23{
24	__asm__ ("swapb %0" : "=r" (x) : "0" (x));
25
26	return(x);
27}
28
29/* defines are necessary because the other files detect the presence
30 * of a defined __arch_swab32, not an inline
31 */
32
33#define __arch__swab32(x) ___arch__swab32(x)
34#define __arch__swab16(x) ___arch__swab16(x)
35
36#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
37#  define __BYTEORDER_HAS_U64__
38#  define __SWAB_64_THRU_32__
39#endif
40
41#endif /* __GNUC__ */
42
43#include <linux/byteorder/little_endian.h>
44
45#endif
46
47
48