[mirror_ubuntu-zesty-kernel.git] / include / asm-x86_64 / byteorder.h

#ifndef _X86_64_BYTEORDER_H
#define _X86_64_BYTEORDER_H

#include <asm/types.h>
#include <linux/compiler.h>

#ifdef __GNUC__

static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x)
{
	__asm__("bswapq %0" : "=r" (x) : "0" (x));
	return x;
}

static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
{
	__asm__("bswapl %0" : "=r" (x) : "0" (x));
	return x;
}

/* Do not define swab16.  Gcc is smart enough to recognize "C" version and
   convert it into rotation or exhange.  */

#define __arch__swab32(x) ___arch__swab32(x)
#define __arch__swab64(x) ___arch__swab64(x)

#endif /* __GNUC__ */

#define __BYTEORDER_HAS_U64__

#include <linux/byteorder/little_endian.h>

#endif /* _X86_64_BYTEORDER_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _X86_64_BYTEORDER_H
	2	#define _X86_64_BYTEORDER_H
	3
	4	#include <asm/types.h>
	5	#include <linux/compiler.h>
	6
	7	#ifdef __GNUC__
	8
	9	static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x)
	10	{
	11	__asm__("bswapq %0" : "=r" (x) : "0" (x));
	12	return x;
	13	}
	14
	15	static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
	16	{
	17	__asm__("bswapl %0" : "=r" (x) : "0" (x));
	18	return x;
	19	}
	20
	21	/* Do not define swab16. Gcc is smart enough to recognize "C" version and
	22	convert it into rotation or exhange. */
	23
	24	#define __arch__swab32(x) ___arch__swab32(x)
	25	#define __arch__swab64(x) ___arch__swab64(x)
	26
	27	#endif /* __GNUC__ */
	28
	29	#define __BYTEORDER_HAS_U64__
	30
	31	#include <linux/byteorder/little_endian.h>
	32
	33	#endif /* _X86_64_BYTEORDER_H */