blob: 7dfeb8bbed2b4cdc69a0e4c3943b4ad0e9d241ed [file] [log] [blame]
wdenk2262cfe2002-11-18 00:14:45 +00001#ifndef _I386_BYTEORDER_H
2#define _I386_BYTEORDER_H
3
4#include <asm/types.h>
5
6#ifdef __GNUC__
7
wdenk2262cfe2002-11-18 00:14:45 +00008
Graeme Russ3ef96de2008-09-07 07:08:42 +10009static __inline__ __u32 ___arch__swab32(__u32 x)
wdenk2262cfe2002-11-18 00:14:45 +000010{
11#ifdef CONFIG_X86_BSWAP
12 __asm__("bswap %0" : "=r" (x) : "0" (x));
13#else
14 __asm__("xchgb %b0,%h0\n\t" /* swap lower bytes */
15 "rorl $16,%0\n\t" /* swap words */
16 "xchgb %b0,%h0" /* swap higher bytes */
17 :"=q" (x)
18 : "0" (x));
19#endif
20 return x;
21}
22
Graeme Russ3ef96de2008-09-07 07:08:42 +100023static __inline__ __u16 ___arch__swab16(__u16 x)
wdenk2262cfe2002-11-18 00:14:45 +000024{
25 __asm__("xchgb %b0,%h0" /* swap bytes */ \
26 : "=q" (x) \
27 : "0" (x)); \
28 return x;
29}
30
31#define __arch__swab32(x) ___arch__swab32(x)
32#define __arch__swab16(x) ___arch__swab16(x)
33
34#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
35# define __BYTEORDER_HAS_U64__
36# define __SWAB_64_THRU_32__
37#endif
38
39#endif /* __GNUC__ */
40
41#include <linux/byteorder/little_endian.h>
42
43#endif /* _I386_BYTEORDER_H */