mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-16 08:44:21 +08:00
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
|
#ifndef _BLACKFIN_BYTEORDER_H
|
||
|
|
#define _BLACKFIN_BYTEORDER_H
|
||
|
|
|
||
|
|
#include <asm/types.h>
|
||
|
|
#include <linux/compiler.h>
|
||
|
|
|
||
|
|
#ifdef __GNUC__
|
||
|
|
|
||
|
|
static __inline__ __attribute_const__ __u32 ___arch__swahb32(__u32 xx)
|
||
|
|
{
|
||
|
|
__u32 tmp;
|
||
|
|
__asm__("%1 = %0 >> 8 (V);\n\t"
|
||
|
|
"%0 = %0 << 8 (V);\n\t"
|
||
|
|
"%0 = %0 | %1;\n\t"
|
||
|
|
: "+d"(xx), "=&d"(tmp));
|
||
|
|
return xx;
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline__ __attribute_const__ __u32 ___arch__swahw32(__u32 xx)
|
||
|
|
{
|
||
|
|
__u32 rv;
|
||
|
|
__asm__("%0 = PACK(%1.L, %1.H);\n\t": "=d"(rv): "d"(xx));
|
||
|
|
return rv;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define __arch__swahb32(x) ___arch__swahb32(x)
|
||
|
|
#define __arch__swahw32(x) ___arch__swahw32(x)
|
||
|
|
#define __arch__swab32(x) ___arch__swahb32(___arch__swahw32(x))
|
||
|
|
|
||
|
|
static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 xx)
|
||
|
|
{
|
||
|
|
__u32 xw = xx;
|
||
|
|
__asm__("%0 <<= 8;\n %0.L = %0.L + %0.H (NS);\n": "+d"(xw));
|
||
|
|
return (__u16)xw;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define __arch__swab16(x) ___arch__swab16(x)
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__)
|
||
|
|
# define __BYTEORDER_HAS_U64__
|
||
|
|
# define __SWAB_64_THRU_32__
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <linux/byteorder/little_endian.h>
|
||
|
|
|
||
|
|
#endif /* _BLACKFIN_BYTEORDER_H */
|