/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ /* All Rights Reserved */ /* * University Copyright- Copyright (c) 1982, 1986, 1988 * The Regents of the University of California * All Rights Reserved * * University Acknowledgment- Portions of this document are derived from * software developed by the University of California, Berkeley, and its * contributors. */ #ifndef _SYS_BYTEORDER_H #define _SYS_BYTEORDER_H #include #include #if defined(__GNUC__) && defined(_ASM_INLINES) && \ (defined(__i386) || defined(__amd64)) #include #endif #ifdef __cplusplus extern "C" { #endif /* * macros for conversion between host and (internet) network byte order */ #if defined(_BIG_ENDIAN) && !defined(ntohl) && !defined(__lint) /* big-endian */ #define ntohl(x) (x) #define ntohll(x) (x) #define ntohs(x) (x) #define htonl(x) (x) #define htonll(x) (x) #define htons(x) (x) #elif !defined(ntohl) /* little-endian */ #ifndef _IN_PORT_T #define _IN_PORT_T typedef uint16_t in_port_t; #endif #ifndef _IN_ADDR_T #define _IN_ADDR_T typedef uint32_t in_addr_t; #endif #if !defined(_XPG4_2) || defined(__EXTENSIONS__) || defined(_XPG5) extern uint32_t htonl(uint32_t); extern uint16_t htons(uint16_t); extern uint32_t ntohl(uint32_t); extern uint16_t ntohs(uint16_t); #else extern in_addr_t htonl(in_addr_t); extern in_port_t htons(in_port_t); extern in_addr_t ntohl(in_addr_t); extern in_port_t ntohs(in_port_t); #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) || defined(_XPG5) */ #if !(defined(_XPG4_2) || defined(_XPG5)) || defined(__EXTENSIONS__) extern uint64_t htonll(uint64_t); extern uint64_t ntohll(uint64_t); #endif /* !(_XPG4_2||_XPG5) || __EXTENSIONS__ */ #endif #if !defined(_XPG4_2) || defined(__EXTENSIONS__) /* * Macros to reverse byte order */ #define BSWAP_8(x) ((x) & 0xff) #if !defined(__i386) && !defined(__amd64) #define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8)) #define BSWAP_32(x) (((uint32_t)(x) << 24) | \ (((uint32_t)(x) << 8) & 0xff0000) | \ (((uint32_t)(x) >> 8) & 0xff00) | \ ((uint32_t)(x) >> 24)) #else /* x86 */ #define BSWAP_16(x) htons(x) #define BSWAP_32(x) htonl(x) #endif /* !__i386 && !__amd64 */ #if (!defined(__i386) && !defined(__amd64)) || \ ((defined(_XPG4_2) || defined(_XPG5)) && !defined(__EXTENSIONS__)) #define BSWAP_64(x) (((uint64_t)(x) << 56) | \ (((uint64_t)(x) << 40) & 0xff000000000000ULL) | \ (((uint64_t)(x) << 24) & 0xff0000000000ULL) | \ (((uint64_t)(x) << 8) & 0xff00000000ULL) | \ (((uint64_t)(x) >> 8) & 0xff000000ULL) | \ (((uint64_t)(x) >> 24) & 0xff0000ULL) | \ (((uint64_t)(x) >> 40) & 0xff00ULL) | \ ((uint64_t)(x) >> 56)) #else /* x86 with non-XPG extensions allowed */ #define BSWAP_64(x) htonll(x) #endif /* (!__i386&&!__amd64) || ((_XPG4_2||_XPG5) && !__EXTENSIONS__) */ #define BMASK_8(x) ((x) & 0xff) #define BMASK_16(x) ((x) & 0xffff) #define BMASK_32(x) ((x) & 0xffffffff) #define BMASK_64(x) (x) /* * Macros to convert from a specific byte order to/from native byte order */ #ifdef _BIG_ENDIAN #define BE_8(x) BMASK_8(x) #define BE_16(x) BMASK_16(x) #define BE_32(x) BMASK_32(x) #define BE_64(x) BMASK_64(x) #define LE_8(x) BSWAP_8(x) #define LE_16(x) BSWAP_16(x) #define LE_32(x) BSWAP_32(x) #define LE_64(x) BSWAP_64(x) #else #define LE_8(x) BMASK_8(x) #define LE_16(x) BMASK_16(x) #define LE_32(x) BMASK_32(x) #define LE_64(x) BMASK_64(x) #define BE_8(x) BSWAP_8(x) #define BE_16(x) BSWAP_16(x) #define BE_32(x) BSWAP_32(x) #define BE_64(x) BSWAP_64(x) #endif /* * Macros to read unaligned values from a specific byte order to * native byte order */ #define BE_IN8(xa) \ *((uint8_t *)(xa)) #if !defined(__i386) && !defined(__amd64) #define BE_IN16(xa) \ (((uint16_t)BE_IN8(xa) << 8) | BE_IN8((uint8_t *)(xa) + 1)) #define BE_IN32(xa) \ (((uint32_t)BE_IN16(xa) << 16) | BE_IN16((uint8_t *)(xa) + 2)) #else /* x86 */ #define BE_IN16(xa) htons(*((uint16_t *)(void *)(xa))) #define BE_IN32(xa) htonl(*((uint32_t *)(void *)(xa))) #endif /* !__i386 && !__amd64 */ #if (!defined(__i386) && !defined(__amd64)) || \ ((defined(_XPG4_2) || defined(_XPG5)) && !defined(__EXTENSIONS__)) #define BE_IN64(xa) \ (((uint64_t)BE_IN32(xa) << 32) | BE_IN32((uint8_t *)(xa) + 4)) #else /* x86 with non-XPG extensions allowed */ #define BE_IN64(xa) htonll(*((uint64_t *)(void *)(xa))) #endif /* (!__i386&&!__amd64) || ((_XPG4_2||_XPG5) && !__EXTENSIONS__) */ #define LE_IN8(xa) \ *((uint8_t *)(xa)) #define LE_IN16(xa) \ (((uint16_t)LE_IN8((uint8_t *)(xa) + 1) << 8) | LE_IN8(xa)) #define LE_IN32(xa) \ (((uint32_t)LE_IN16((uint8_t *)(xa) + 2) << 16) | LE_IN16(xa)) #define LE_IN64(xa) \ (((uint64_t)LE_IN32((uint8_t *)(xa) + 4) << 32) | LE_IN32(xa)) /* * Macros to write unaligned values from native byte order to a specific byte * order. */ #define BE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv); #define BE_OUT16(xa, yv) \ BE_OUT8((uint8_t *)(xa) + 1, yv); \ BE_OUT8((uint8_t *)(xa), (yv) >> 8); #define BE_OUT32(xa, yv) \ BE_OUT16((uint8_t *)(xa) + 2, yv); \ BE_OUT16((uint8_t *)(xa), (yv) >> 16); #if (!defined(__i386) && !defined(__amd64)) || \ ((defined(_XPG4_2) || defined(_XPG5)) && !defined(__EXTENSIONS__)) #define BE_OUT64(xa, yv) \ BE_OUT32((uint8_t *)(xa) + 4, yv); \ BE_OUT32((uint8_t *)(xa), (yv) >> 32); #else /* x86 with non-XPG extensions allowed */ #define BE_OUT64(xa, yv) *((uint64_t *)(void *)(xa)) = htonll((uint64_t)(yv)); #endif /* (!__i386&&!__amd64) || ((_XPG4_2||_XPG5) && !__EXTENSIONS__) */ #define LE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv); #define LE_OUT16(xa, yv) \ LE_OUT8((uint8_t *)(xa), yv); \ LE_OUT8((uint8_t *)(xa) + 1, (yv) >> 8); #define LE_OUT32(xa, yv) \ LE_OUT16((uint8_t *)(xa), yv); \ LE_OUT16((uint8_t *)(xa) + 2, (yv) >> 16); #define LE_OUT64(xa, yv) \ LE_OUT32((uint8_t *)(xa), yv); \ LE_OUT32((uint8_t *)(xa) + 4, (yv) >> 32); #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ #ifdef __cplusplus } #endif #endif /* _SYS_BYTEORDER_H */