newlib-cygwin/winsup/cygwin/include/machine/_endian.h

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/* machine/_endian.h
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifndef __MACHINE_ENDIAN_H__
#error "must be included via <machine/endian.h>"
#endif /* !__MACHINE_ENDIAN_H__ */
#include <_ansi.h>
#include <bits/endian.h>
#define _LITTLE_ENDIAN __LITTLE_ENDIAN
#define _BIG_ENDIAN __BIG_ENDIAN
#define _PDP_ENDIAN __PDP_ENDIAN
#define _BYTE_ORDER __BYTE_ORDER
#define __machine_host_to_from_network_defined
_ELIDABLE_INLINE __uint32_t __ntohl(__uint32_t);
_ELIDABLE_INLINE __uint16_t __ntohs(__uint16_t);
_ELIDABLE_INLINE __uint32_t
__ntohl(__uint32_t _x)
{
__asm__("bswap %0" : "=r" (_x) : "0" (_x));
return _x;
}
_ELIDABLE_INLINE __uint16_t
__ntohs(__uint16_t _x)
{
__asm__("xchgb %b0,%h0" /* swap bytes */
: "=Q" (_x)
: "0" (_x));
return _x;
}
#define __htonl(_x) __ntohl(_x)
#define __htons(_x) __ntohs(_x)