/*
* Copyright (c) 2024 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* Copyright (c) 1987, 1991, 1993
* The Regents of the University of California. 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)endian.h 8.1 (Berkeley) 6/11/93
*/
#ifndef _SYS_ENDIAN_H_
#define _SYS_ENDIAN_H_
#include <sys/cdefs.h>
#include <sys/_types.h>
#include <sys/_endian.h>
#ifndef DRIVERKIT
#include <libkern/_OSByteOrder.h>
#define __bswap16(x) __DARWIN_OSSwapInt16(x)
#define __bswap32(x) __DARWIN_OSSwapInt32(x)
#define __bswap64(x) __DARWIN_OSSwapInt64(x)
#else /* DRIVERKIT */
#define __bswap16(x) __builtin_bswap16(x)
#define __bswap32(x) __builtin_bswap32(x)
#define __bswap64(x) __builtin_bswap64(x)
#endif /* DRIVERKIT */
/*
* General byte order swapping functions.
*/
#define bswap16(x) __bswap16(x)
#define bswap32(x) __bswap32(x)
#define bswap64(x) __bswap64(x)
/*
* Macros to convert to a specific endianness.
*/
#if __DARWIN_BYTE_ORDER == __DARWIN_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))
#else /* __DARWIN_BYTE_ORDER != __DARWIN_LITTLE_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))
#endif /* __DARWIN_BYTE_ORDER == __DARWIN_LITTLE_ENDIAN */
/*
* Routines to encode/decode big- and little-endian multi-octet values
* to/from an octet stream.
*/
static __inline __uint16_t
be16dec(const void *__sized_by(sizeof(__uint16_t)) pp)
{
const __uint8_t *p = (const __uint8_t *)pp;
return (__uint16_t)(p[0] << 8) | p[1];
}
static __inline __uint32_t
be32dec(const void *__sized_by(sizeof(__uint32_t)) pp)
{
const __uint8_t *p = (const __uint8_t *)pp;
return ((__uint32_t)p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
}
static __inline __uint64_t
be64dec(const void *__sized_by(sizeof(__uint64_t)) pp)
{
const __uint8_t *p = (const __uint8_t *)pp;
return ((__uint64_t)be32dec(p) << 32) | be32dec(p + 4);
}
static __inline __uint16_t
le16dec(const void *__sized_by(sizeof(__uint16_t)) pp)
{
const __uint8_t *p = (const __uint8_t *)pp;
return (__uint16_t)(p[1] << 8) | p[0];
}
static __inline __uint32_t
le32dec(const void *__sized_by(sizeof(__uint32_t)) pp)
{
const __uint8_t *p = (const __uint8_t *)pp;
return ((__uint32_t)p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0];
}
static __inline __uint64_t
le64dec(const void *__sized_by(sizeof(__uint64_t)) pp)
{
const __uint8_t *p = (const __uint8_t *)pp;
return ((__uint64_t)le32dec(p + 4) << 32) | le32dec(p);
}
static __inline void
be16enc(void *__sized_by(sizeof(__uint16_t)) pp, __uint16_t u)
{
__uint8_t *p = (__uint8_t *)pp;
p[0] = (u >> 8) & 0xff;
p[1] = u & 0xff;
}
static __inline void
be32enc(void *__sized_by(sizeof(__uint32_t)) 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 *__sized_by(sizeof(__uint64_t)) 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 *__sized_by(sizeof(__uint16_t)) pp, __uint16_t u)
{
__uint8_t *p = (__uint8_t *)pp;
p[0] = u & 0xff;
p[1] = (u >> 8) & 0xff;
}
static __inline void
le32enc(void *__sized_by(sizeof(__uint32_t)) 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 *__sized_by(sizeof(__uint64_t)) 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_ */