36 lines
807 B
C
36 lines
807 B
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
// Copyright (C) 2005-2017 Andes Technology Corporation
|
||
|
|
|
||
|
|
#ifndef __NDS32_SWAB_H__
|
||
|
|
#define __NDS32_SWAB_H__
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/compiler.h>
|
||
|
|
|
||
|
|
static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
|
||
|
|
{
|
||
|
|
__asm__("wsbh %0, %0\n\t" /* word swap byte within halfword */
|
||
|
|
"rotri %0, %0, #16\n"
|
||
|
|
:"=r"(x)
|
||
|
|
:"0"(x));
|
||
|
|
return x;
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
|
||
|
|
{
|
||
|
|
__asm__("wsbh %0, %0\n" /* word swap byte within halfword */
|
||
|
|
:"=r"(x)
|
||
|
|
:"0"(x));
|
||
|
|
return x;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define __arch_swab32(x) ___arch__swab32(x)
|
||
|
|
#define __arch_swab16(x) ___arch__swab16(x)
|
||
|
|
|
||
|
|
#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
|
||
|
|
#define __BYTEORDER_HAS_U64__
|
||
|
|
#define __SWAB_64_THRU_32__
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* __NDS32_SWAB_H__ */
|