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200 lines
5.0 KiB
C
200 lines
5.0 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
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/* All Rights Reserved */
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/*
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* University Copyright- Copyright (c) 1982, 1986, 1988
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* The Regents of the University of California
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* All Rights Reserved
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*
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* University Acknowledgment- Portions of this document are derived from
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* software developed by the University of California, Berkeley, and its
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* contributors.
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*/
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#ifndef _SYS_BYTEORDER_H
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#define _SYS_BYTEORDER_H
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#include <sys/isa_defs.h>
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#include <sys/int_types.h>
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#if defined(__GNUC__) && defined(_ASM_INLINES) && \
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(defined(__i386) || defined(__amd64))
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#include <asm/byteorder.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* macros for conversion between host and (internet) network byte order
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*/
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#if defined(_BIG_ENDIAN) && !defined(ntohl) && !defined(__lint)
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/* big-endian */
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#define ntohl(x) (x)
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#define ntohs(x) (x)
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#define htonl(x) (x)
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#define htons(x) (x)
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#elif !defined(ntohl) /* little-endian */
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#ifndef _IN_PORT_T
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#define _IN_PORT_T
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typedef uint16_t in_port_t;
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#endif
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#ifndef _IN_ADDR_T
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#define _IN_ADDR_T
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typedef uint32_t in_addr_t;
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#endif
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#if !defined(_XPG4_2) || defined(__EXTENSIONS__) || defined(_XPG5)
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extern uint32_t htonl(uint32_t);
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extern uint16_t htons(uint16_t);
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extern uint32_t ntohl(uint32_t);
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extern uint16_t ntohs(uint16_t);
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#else
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extern in_addr_t htonl(in_addr_t);
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extern in_port_t htons(in_port_t);
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extern in_addr_t ntohl(in_addr_t);
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extern in_port_t ntohs(in_port_t);
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#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) || defined(_XPG5) */
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#endif
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#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
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/*
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* Macros to reverse byte order
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*/
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#define BSWAP_8(x) ((x) & 0xff)
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#define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))
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#define BSWAP_32(x) ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16))
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#define BSWAP_64(x) ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32))
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#define BMASK_8(x) ((x) & 0xff)
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#define BMASK_16(x) ((x) & 0xffff)
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#define BMASK_32(x) ((x) & 0xffffffff)
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#define BMASK_64(x) (x)
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/*
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* Macros to convert from a specific byte order to/from native byte order
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*/
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#ifdef _BIG_ENDIAN
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#define BE_8(x) BMASK_8(x)
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#define BE_16(x) BMASK_16(x)
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#define BE_32(x) BMASK_32(x)
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#define BE_64(x) BMASK_64(x)
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#define LE_8(x) BSWAP_8(x)
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#define LE_16(x) BSWAP_16(x)
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#define LE_32(x) BSWAP_32(x)
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#define LE_64(x) BSWAP_64(x)
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#else
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#define LE_8(x) BMASK_8(x)
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#define LE_16(x) BMASK_16(x)
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#define LE_32(x) BMASK_32(x)
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#define LE_64(x) BMASK_64(x)
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#define BE_8(x) BSWAP_8(x)
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#define BE_16(x) BSWAP_16(x)
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#define BE_32(x) BSWAP_32(x)
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#define BE_64(x) BSWAP_64(x)
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#endif
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/*
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* Macros to read unaligned values from a specific byte order to
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* native byte order
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*/
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#define BE_IN8(xa) \
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*((uint8_t *)(xa))
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#define BE_IN16(xa) \
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(((uint16_t)BE_IN8(xa) << 8) | BE_IN8((uint8_t *)(xa)+1))
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#define BE_IN32(xa) \
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(((uint32_t)BE_IN16(xa) << 16) | BE_IN16((uint8_t *)(xa)+2))
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#define BE_IN64(xa) \
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(((uint64_t)BE_IN32(xa) << 32) | BE_IN32((uint8_t *)(xa)+4))
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#define LE_IN8(xa) \
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*((uint8_t *)(xa))
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#define LE_IN16(xa) \
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(((uint16_t)LE_IN8((uint8_t *)(xa) + 1) << 8) | LE_IN8(xa))
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#define LE_IN32(xa) \
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(((uint32_t)LE_IN16((uint8_t *)(xa) + 2) << 16) | LE_IN16(xa))
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#define LE_IN64(xa) \
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(((uint64_t)LE_IN32((uint8_t *)(xa) + 4) << 32) | LE_IN32(xa))
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/*
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* Macros to write unaligned values from native byte order to a specific byte
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* order.
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*/
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#define BE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv);
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#define BE_OUT16(xa, yv) \
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BE_OUT8((uint8_t *)(xa) + 1, yv); \
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BE_OUT8((uint8_t *)(xa), (yv) >> 8);
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#define BE_OUT32(xa, yv) \
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BE_OUT16((uint8_t *)(xa) + 2, yv); \
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BE_OUT16((uint8_t *)(xa), (yv) >> 16);
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#define BE_OUT64(xa, yv) \
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BE_OUT32((uint8_t *)(xa) + 4, yv); \
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BE_OUT32((uint8_t *)(xa), (yv) >> 32);
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#define LE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv);
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#define LE_OUT16(xa, yv) \
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LE_OUT8((uint8_t *)(xa), yv); \
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LE_OUT8((uint8_t *)(xa) + 1, (yv) >> 8);
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#define LE_OUT32(xa, yv) \
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LE_OUT16((uint8_t *)(xa), yv); \
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LE_OUT16((uint8_t *)(xa) + 2, (yv) >> 16);
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#define LE_OUT64(xa, yv) \
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LE_OUT32((uint8_t *)(xa), yv); \
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LE_OUT32((uint8_t *)(xa) + 4, (yv) >> 32);
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#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_BYTEORDER_H */
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