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/*

 *  $Id: endian.h,v 1.2 2001-09-27 12:01:53 chris Exp $

 */

#ifndef _MACHINE_ENDIAN_H_

#define _MACHINE_ENDIAN_H_

#include <rtems/score/cpu.h>

/*

 * BSD-style endian declaration

 */

#define BIG_ENDIAN      4321

#define LITTLE_ENDIAN   1234

#if CPU_BIG_ENDIAN

# define BYTE_ORDER BIG_ENDIAN

#elif CPU_LITTLE_ENDIAN

# define BYTE_ORDER LITTLE_ENDIAN

#else

# error "Can't decide which end is which!"

#endif

#if ( CPU_HAS_OWN_HOST_TO_NETWORK_ROUTINES == FALSE )

#if ( CPU_BIG_ENDIAN == TRUE )

/*

 *  Very simply on big endian CPUs

 */

#define       ntohl(_x)        (_x)

#define       ntohs(_x)        (_x)

#define       htonl(_x)        (_x)

#define       htons(_x)        (_x)

#define NTOHS(x)

#define HTONS(x)

#define NTOHL(x)

#define HTONL(x)

#elif ( CPU_LITTLE_ENDIAN == TRUE )

/*

 *  A little more complicated on little endian CPUs

 */

#define       ntohl(_x)        ((long)  CPU_swap_u32((unsigned32)_x))

#define       ntohs(_x)        ((short) CPU_swap_u16((unsigned16)_x))

#define       htonl(_x)        ((long)  CPU_swap_u32((unsigned32)_x))

#define       htons(_x)        ((short) CPU_swap_u16((unsigned16)_x))

#define NTOHS(x) (x) = ntohs(x)

#define HTONS(x) (x) = htons(x)

#define NTOHL(x) (x) = ntohl(x)

#define HTONL(x) (x) = htonl(x)

#else

#error "Unknown endian-ness for this cpu"

#endif

#endif  /* CPU_HAS_OWN_HOST_TO_NETWORK_ROUTINES */

#endif /* _MACHINE_ENDIAN_H_ */