mirror of
https://git.rtems.org/rtems-libbsd/
synced 2025-05-14 04:09:26 +08:00
112 lines
2.9 KiB
C
112 lines
2.9 KiB
C
/**
|
|
* @file
|
|
*
|
|
* @ingroup rtems_bsd_machine
|
|
*
|
|
* @brief TODO.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2009-2013 embedded brains GmbH. All rights reserved.
|
|
*
|
|
* embedded brains GmbH
|
|
* Dornierstr. 4
|
|
* 82178 Puchheim
|
|
* Germany
|
|
* <rtems@embedded-brains.de>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _RTEMS_BSD_MACHINE_ENDIAN_H
|
|
#define _RTEMS_BSD_MACHINE_ENDIAN_H
|
|
|
|
#include <machine/endian.h>
|
|
#include <stdint.h>
|
|
|
|
#if __BSD_VISIBLE
|
|
|
|
#define _BYTE_ORDER BYTE_ORDER
|
|
|
|
/* On PowerPC this is a GCC built-in define */
|
|
#undef _BIG_ENDIAN
|
|
#define _BIG_ENDIAN BIG_ENDIAN
|
|
|
|
#define _LITTLE_ENDIAN LITTLE_ENDIAN
|
|
|
|
#if BYTE_ORDER == BIG_ENDIAN
|
|
#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 __ntohl(x) (__bswap32(x))
|
|
#define __ntohs(x) (__bswap16(x))
|
|
#define __htonl(x) (__bswap32(x))
|
|
#define __htons(x) (__bswap16(x))
|
|
#endif
|
|
|
|
static inline uint16_t
|
|
__bswap16(uint16_t v)
|
|
{
|
|
#ifdef __GNUC__
|
|
return __builtin_bswap16(v);
|
|
#else
|
|
return (uint16_t) ((v >> 8)
|
|
| ((v & 0xffU) << 8));
|
|
#endif
|
|
}
|
|
|
|
static inline uint32_t
|
|
__bswap32(uint32_t v)
|
|
{
|
|
#ifdef __GNUC__
|
|
return __builtin_bswap32(v);
|
|
#else
|
|
return (uint32_t) ((v >> 24)
|
|
| ((v >> 8) && 0xff00U)
|
|
| ((v & 0xff00U) << 8)
|
|
| ((v & 0xffU) << 24));
|
|
#endif
|
|
}
|
|
|
|
static inline uint64_t
|
|
__bswap64(uint64_t v)
|
|
{
|
|
#ifdef __GNUC__
|
|
return __builtin_bswap64(v);
|
|
#else
|
|
return (uint64_t) ((v >> 56)
|
|
| ((v >> 40) && 0xff00U)
|
|
| ((v >> 24) && 0xff0000U)
|
|
| ((v >> 8) && 0xff000000U)
|
|
| ((v & 0xff000000U) << 8)
|
|
| ((v & 0xff0000U) << 24)
|
|
| ((v & 0xff00U) << 40)
|
|
| ((v & 0xffU) << 56));
|
|
#endif
|
|
}
|
|
|
|
#endif /* __BSD_VISIBLE */
|
|
|
|
#endif /* _RTEMS_BSD_MACHINE_ENDIAN_H */
|