51 lines
1.0 KiB
C
51 lines
1.0 KiB
C
|
/*
|
||
|
|
* Copyright 2009 Analog Devices Inc.
|
||
|
|
*
|
||
|
|
* Licensed under the GPL-2 or later.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _BLACKFIN_SWAB_H
|
||
|
|
#define _BLACKFIN_SWAB_H
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <asm-generic/swab.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;
|
||
|
|
}
|
||
|
|
#define __arch_swahb32 __arch_swahb32
|
||
|
|
|
||
|
|
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_swahw32 __arch_swahw32
|
||
|
|
|
||
|
|
static __inline__ __attribute_const__ __u32 __arch_swab32(__u32 xx)
|
||
|
|
{
|
||
|
|
return __arch_swahb32(__arch_swahw32(xx));
|
||
|
|
}
|
||
|
|
#define __arch_swab32 __arch_swab32
|
||
|
|
|
||
|
|
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 __arch_swab16
|
||
|
|
|
||
|
|
#endif /* __GNUC__ */
|
||
|
|
|
||
|
|
#endif /* _BLACKFIN_SWAB_H */
|