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