Differential D29012 Diff 86371 sys/arm/include/endian.h

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sys/arm/include/endian.h

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	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.			* SUCH DAMAGE.
	*			*
	* @(#)endian.h 8.1 (Berkeley) 6/10/93			* @(#)endian.h 8.1 (Berkeley) 6/10/93
	* $NetBSD: endian.h,v 1.7 1999/08/21 05:53:51 simonb Exp $			* $NetBSD: endian.h,v 1.7 1999/08/21 05:53:51 simonb Exp $
	* $FreeBSD$			* $FreeBSD$
	*/			*/

	#ifndef _ENDIAN_H_			#ifndef _MACHINE_ENDIAN_H_
	#define _ENDIAN_H_			#define _MACHINE_ENDIAN_H_

	#include <sys/_types.h>			#include <sys/_types.h>
				#include <sys/_endian.h>
				impUnsubmitted Not Done Inline Actions sweet imp: sweet

	/*			#endif /* !_MACHINE_ENDIAN_H_ */
	* Definitions for byte order, according to byte significance from low
	* address to high.
	*/
	#define _LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
	#define _BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
	#define _PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */

	#ifdef __ARMEB__
	#define _BYTE_ORDER _BIG_ENDIAN
	#else
	#define _BYTE_ORDER _LITTLE_ENDIAN
	#endif /* __ARMEB__ */

	#if __BSD_VISIBLE
	#define LITTLE_ENDIAN _LITTLE_ENDIAN
	#define BIG_ENDIAN _BIG_ENDIAN
	#define PDP_ENDIAN _PDP_ENDIAN
	#define BYTE_ORDER _BYTE_ORDER
	#endif

	#ifdef __ARMEB__
	#define _QUAD_HIGHWORD 0
	#define _QUAD_LOWWORD 1
	#define __ntohl(x) ((__uint32_t)(x))
	#define __ntohs(x) ((__uint16_t)(x))
	#define __htonl(x) ((__uint32_t)(x))
	#define __htons(x) ((__uint16_t)(x))
	#else
	#define _QUAD_HIGHWORD 1
	#define _QUAD_LOWWORD 0
	#define __ntohl(x) (__bswap32(x))
	#define __ntohs(x) (__bswap16(x))
	#define __htonl(x) (__bswap32(x))
	#define __htons(x) (__bswap16(x))
	#endif /* __ARMEB__ */

	static __inline __uint64_t
	__bswap64(__uint64_t _x)
	{

	return ((_x >> 56) \| ((_x >> 40) & 0xff00) \| ((_x >> 24) & 0xff0000) \|
	((_x >> 8) & 0xff000000) \| ((_x << 8) & ((__uint64_t)0xff << 32)) \|
	((_x << 24) & ((__uint64_t)0xff << 40)) \|
	((_x << 40) & ((__uint64_t)0xff << 48)) \| ((_x << 56)));
	}

	static __inline __uint32_t
	__bswap32_var(__uint32_t v)
	{
	__uint32_t t1;

	__asm __volatile("eor %1, %0, %0, ror #16\n"
	"bic %1, %1, #0x00ff0000\n"
	"mov %0, %0, ror #8\n"
	"eor %0, %0, %1, lsr #8\n"
	: "+r" (v), "=r" (t1));

	return (v);
	}

	static __inline __uint16_t
	__bswap16_var(__uint16_t v)
	{
	__uint32_t ret = v & 0xffff;

	__asm __volatile(
	"mov %0, %0, ror #8\n"
	"orr %0, %0, %0, lsr #16\n"
	"bic %0, %0, %0, lsl #16"
	: "+r" (ret));

	return ((__uint16_t)ret);
	}

	#ifdef __OPTIMIZE__

	#define __bswap32_constant(x) \
	((((x) & 0xff000000U) >> 24) \| \
	(((x) & 0x00ff0000U) >> 8) \| \
	(((x) & 0x0000ff00U) << 8) \| \
	(((x) & 0x000000ffU) << 24))

	#define __bswap16_constant(x) \
	((((x) & 0xff00) >> 8) \| \
	(((x) & 0x00ff) << 8))

	#define __bswap16(x) \
	((__uint16_t)(__builtin_constant_p(x) ? \
	__bswap16_constant(x) : \
	__bswap16_var(x)))

	#define __bswap32(x) \
	((__uint32_t)(__builtin_constant_p(x) ? \
	__bswap32_constant(x) : \
	__bswap32_var(x)))

	#else
	#define __bswap16(x) __bswap16_var(x)
	#define __bswap32(x) __bswap32_var(x)

	#endif /* __OPTIMIZE__ */
	#endif /* !_ENDIAN_H_ */