262 lines
7.2 KiB
C
262 lines
7.2 KiB
C
/*-
|
|
* Copyright (c) 2002 Thomas Moestl <tmm@FreeBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* $FreeBSD: releng/10.1/sys/sys/endian.h 208331 2010-05-20 06:16:13Z phk $
|
|
*/
|
|
|
|
#ifndef _SYS_ENDIAN_H_
|
|
#define _SYS_ENDIAN_H_
|
|
|
|
#include <rtthread.h>
|
|
#include "sunxi_hal_common.h"
|
|
|
|
#ifdef CONFIG_RTTKERNEL
|
|
|
|
#ifndef _LITTLE_ENDIAN
|
|
#define _LITTLE_ENDIAN 1
|
|
#endif
|
|
|
|
#define _BYTE_ORDER _LITTLE_ENDIAN
|
|
|
|
#ifndef __bswap32
|
|
|
|
#if ((defined(__GNUC__) && !defined(__CC_ARM)))
|
|
|
|
#define __bswap16(x) ((uint16_t)__builtin_bswap16(x))
|
|
#define __bswap32(x) ((uint32_t)__builtin_bswap32(x))
|
|
#define __bswap64(x) ((uint64_t)__builtin_bswap64(x))
|
|
|
|
#else /* ((defined(__GNUC__) && !defined(__CC_ARM))) */
|
|
|
|
#define __bswap16(x) ((uint16_t)( \
|
|
(((uint16_t)(x) & (uint16_t)0x00ffU) << 8) | \
|
|
(((uint16_t)(x) & (uint16_t)0xff00U) >> 8)))
|
|
|
|
#define __bswap32(x) ((uint32_t)( \
|
|
(((uint32_t)(x) & (uint32_t)0x000000ffUL) << 24) | \
|
|
(((uint32_t)(x) & (uint32_t)0x0000ff00UL) << 8) | \
|
|
(((uint32_t)(x) & (uint32_t)0x00ff0000UL) >> 8) | \
|
|
(((uint32_t)(x) & (uint32_t)0xff000000UL) >> 24)))
|
|
|
|
#define __bswap64(x) ((uint64_t)( \
|
|
(((uint64_t)(x) & (uint64_t)0x00000000000000ffULL) << 56) | \
|
|
(((uint64_t)(x) & (uint64_t)0x000000000000ff00ULL) << 40) | \
|
|
(((uint64_t)(x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \
|
|
(((uint64_t)(x) & (uint64_t)0x00000000ff000000ULL) << 8) | \
|
|
(((uint64_t)(x) & (uint64_t)0x000000ff00000000ULL) >> 8) | \
|
|
(((uint64_t)(x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \
|
|
(((uint64_t)(x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \
|
|
(((uint64_t)(x) & (uint64_t)0xff00000000000000ULL) >> 56)))
|
|
|
|
#endif /* ((defined(__GNUC__) && !defined(__CC_ARM))) */
|
|
|
|
#else /* __bswap32 */
|
|
|
|
#undef __bswap32
|
|
#define __bswap32(x) (uint32_t)__builtin_bswap32(x)
|
|
|
|
#endif /* __bswap32 */
|
|
|
|
/*
|
|
* General byte order swapping functions.
|
|
*/
|
|
#define bswap16(x) __bswap16(x)
|
|
#define bswap32(x) __bswap32(x)
|
|
#define bswap64(x) __bswap64(x)
|
|
|
|
/*
|
|
* Host to big endian, host to little endian, big endian to host, and little
|
|
* endian to host byte order functions as detailed in byteorder(9).
|
|
*/
|
|
#if _BYTE_ORDER == _LITTLE_ENDIAN
|
|
#define htobe16(x) bswap16((x))
|
|
#define htobe32(x) bswap32((x))
|
|
#define htobe64(x) bswap64((x))
|
|
#define htole16(x) ((uint16_t)(x))
|
|
#define htole32(x) ((uint32_t)(x))
|
|
#define htole64(x) ((uint64_t)(x))
|
|
|
|
#define be16toh(x) bswap16((x))
|
|
#define be32toh(x) bswap32((x))
|
|
#define be64toh(x) bswap64((x))
|
|
#define le16toh(x) ((uint16_t)(x))
|
|
#define le32toh(x) ((uint32_t)(x))
|
|
#define le64toh(x) ((uint64_t)(x))
|
|
#elif (_BYTE_ORDER == _BIG_ENDIAN)
|
|
#define htobe16(x) ((uint16_t)(x))
|
|
#define htobe32(x) ((uint32_t)(x))
|
|
#define htobe64(x) ((uint64_t)(x))
|
|
#define htole16(x) bswap16((x))
|
|
#define htole32(x) bswap32((x))
|
|
#define htole64(x) bswap64((x))
|
|
|
|
#define be16toh(x) ((uint16_t)(x))
|
|
#define be32toh(x) ((uint32_t)(x))
|
|
#define be64toh(x) ((uint64_t)(x))
|
|
#define le16toh(x) bswap16((x))
|
|
#define le32toh(x) bswap32((x))
|
|
#define le64toh(x) bswap64((x))
|
|
#else
|
|
#error "Endian not defined!"
|
|
#endif /* _BYTE_ORDER == _LITTLE_ENDIAN */
|
|
#endif
|
|
|
|
#define __cpu_to_le64(x) htole64(x)
|
|
#define __le64_to_cpu(x) le64toh(x)
|
|
#define __cpu_to_le32(x) htole32(x)
|
|
#define __le32_to_cpu(x) le32toh(x)
|
|
#define __cpu_to_le16(x) htole16(x)
|
|
#define __le16_to_cpu(x) le16toh(x)
|
|
#define __cpu_to_be64(x) htobe64(x)
|
|
#define __be64_to_cpu(x) be64toh(x)
|
|
#define __cpu_to_be32(x) htobe32(x)
|
|
#define __be32_to_cpu(x) be32toh(x)
|
|
#define __cpu_to_be16(x) htobe16(x)
|
|
#define __be16_to_cpu(x) be16toh(x)
|
|
|
|
#define cpu_to_le64 __cpu_to_le64
|
|
#define le64_to_cpu __le64_to_cpu
|
|
#define cpu_to_le32 __cpu_to_le32
|
|
#define le32_to_cpu __le32_to_cpu
|
|
#define cpu_to_le16 __cpu_to_le16
|
|
#define le16_to_cpu __le16_to_cpu
|
|
#define cpu_to_be64 __cpu_to_be64
|
|
#define be64_to_cpu __be64_to_cpu
|
|
#define cpu_to_be32 __cpu_to_be32
|
|
#define be32_to_cpu __be32_to_cpu
|
|
#define cpu_to_be16 __cpu_to_be16
|
|
#define be16_to_cpu __be16_to_cpu
|
|
|
|
|
|
/* Alignment-agnostic encode/decode bytestream to/from little/big endian. */
|
|
|
|
static __inline uint16_t
|
|
be16dec(const void *pp)
|
|
{
|
|
uint8_t const *p = (uint8_t const *)pp;
|
|
|
|
return ((p[0] << 8) | p[1]);
|
|
}
|
|
|
|
static __inline uint32_t
|
|
be32dec(const void *pp)
|
|
{
|
|
uint8_t const *p = (uint8_t const *)pp;
|
|
|
|
return (((unsigned)p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]);
|
|
}
|
|
|
|
static __inline uint64_t
|
|
be64dec(const void *pp)
|
|
{
|
|
uint8_t const *p = (uint8_t const *)pp;
|
|
|
|
return (((uint64_t)be32dec(p) << 32) | be32dec(p + 4));
|
|
}
|
|
|
|
static __inline uint16_t
|
|
le16dec(const void *pp)
|
|
{
|
|
uint8_t const *p = (uint8_t const *)pp;
|
|
|
|
return ((p[1] << 8) | p[0]);
|
|
}
|
|
|
|
static __inline uint32_t
|
|
le32dec(const void *pp)
|
|
{
|
|
uint8_t const *p = (uint8_t const *)pp;
|
|
|
|
return (((unsigned)p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0]);
|
|
}
|
|
|
|
static __inline uint64_t
|
|
le64dec(const void *pp)
|
|
{
|
|
uint8_t const *p = (uint8_t const *)pp;
|
|
|
|
return (((uint64_t)le32dec(p + 4) << 32) | le32dec(p));
|
|
}
|
|
|
|
static __inline void
|
|
be16enc(void *pp, uint16_t u)
|
|
{
|
|
uint8_t *p = (uint8_t *)pp;
|
|
|
|
p[0] = (u >> 8) & 0xff;
|
|
p[1] = u & 0xff;
|
|
}
|
|
|
|
static __inline void
|
|
be32enc(void *pp, uint32_t u)
|
|
{
|
|
uint8_t *p = (uint8_t *)pp;
|
|
|
|
p[0] = (u >> 24) & 0xff;
|
|
p[1] = (u >> 16) & 0xff;
|
|
p[2] = (u >> 8) & 0xff;
|
|
p[3] = u & 0xff;
|
|
}
|
|
|
|
static __inline void
|
|
be64enc(void *pp, uint64_t u)
|
|
{
|
|
uint8_t *p = (uint8_t *)pp;
|
|
|
|
be32enc(p, (uint32_t)(u >> 32));
|
|
be32enc(p + 4, (uint32_t)(u & 0xffffffffU));
|
|
}
|
|
|
|
static __inline void
|
|
le16enc(void *pp, uint16_t u)
|
|
{
|
|
uint8_t *p = (uint8_t *)pp;
|
|
|
|
p[0] = u & 0xff;
|
|
p[1] = (u >> 8) & 0xff;
|
|
}
|
|
|
|
static __inline void
|
|
le32enc(void *pp, uint32_t u)
|
|
{
|
|
uint8_t *p = (uint8_t *)pp;
|
|
|
|
p[0] = u & 0xff;
|
|
p[1] = (u >> 8) & 0xff;
|
|
p[2] = (u >> 16) & 0xff;
|
|
p[3] = (u >> 24) & 0xff;
|
|
}
|
|
|
|
static __inline void
|
|
le64enc(void *pp, uint64_t u)
|
|
{
|
|
uint8_t *p = (uint8_t *)pp;
|
|
|
|
le32enc(p, (uint32_t)(u & 0xffffffffU));
|
|
le32enc(p + 4, (uint32_t)(u >> 32));
|
|
}
|
|
|
|
#endif /* _SYS_ENDIAN_H_ */
|