41 lines
785 B
C
41 lines
785 B
C
/* $NetBSD: byte_swap.h,v 1.4 2006/02/17 08:23:26 skrll Exp $ */
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/* Written by Manuel Bouyer. Public domain */
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#ifndef _SH3_BYTE_SWAP_H_
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#define _SH3_BYTE_SWAP_H_
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#include <sys/cdefs.h>
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#ifdef __GNUC__
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#include <sys/types.h>
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__BEGIN_DECLS
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#define __BYTE_SWAP_U16_VARIABLE __byte_swap_u16_variable
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static __inline uint16_t
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__byte_swap_u16_variable(uint16_t x)
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{
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uint16_t rval;
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__asm volatile ("swap.b %1,%0" : "=r"(rval) : "r"(x));
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return (rval);
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}
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#define __BYTE_SWAP_U32_VARIABLE __byte_swap_u32_variable
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static __inline uint32_t
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__byte_swap_u32_variable(uint32_t x)
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{
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uint32_t rval;
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__asm volatile ("swap.b %1,%0; swap.w %0,%0; swap.b %0,%0"
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: "=r"(rval) : "r"(x));
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return (rval);
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}
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__END_DECLS
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#endif /* __GNUC_ */
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#endif /* !_SH3_BYPE_SWAP_H_ */
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