xref: /onnv-gate/usr/src/uts/common/sys/byteorder.h (revision 9162:b011b0287065)
10Sstevel@tonic-gate /*
20Sstevel@tonic-gate  * CDDL HEADER START
30Sstevel@tonic-gate  *
40Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5713Swesolows  * Common Development and Distribution License (the "License").
6713Swesolows  * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate  *
80Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate  * See the License for the specific language governing permissions
110Sstevel@tonic-gate  * and limitations under the License.
120Sstevel@tonic-gate  *
130Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate  *
190Sstevel@tonic-gate  * CDDL HEADER END
200Sstevel@tonic-gate  */
21713Swesolows 
220Sstevel@tonic-gate /*
23*9162SPeter.Dunlap@Sun.COM  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
240Sstevel@tonic-gate  * Use is subject to license terms.
250Sstevel@tonic-gate  */
260Sstevel@tonic-gate 
270Sstevel@tonic-gate /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
280Sstevel@tonic-gate /*	  All Rights Reserved  	*/
290Sstevel@tonic-gate 
300Sstevel@tonic-gate /*
310Sstevel@tonic-gate  * University Copyright- Copyright (c) 1982, 1986, 1988
320Sstevel@tonic-gate  * The Regents of the University of California
330Sstevel@tonic-gate  * All Rights Reserved
340Sstevel@tonic-gate  *
350Sstevel@tonic-gate  * University Acknowledgment- Portions of this document are derived from
360Sstevel@tonic-gate  * software developed by the University of California, Berkeley, and its
370Sstevel@tonic-gate  * contributors.
380Sstevel@tonic-gate  */
390Sstevel@tonic-gate 
400Sstevel@tonic-gate #ifndef _SYS_BYTEORDER_H
410Sstevel@tonic-gate #define	_SYS_BYTEORDER_H
420Sstevel@tonic-gate 
430Sstevel@tonic-gate #include <sys/isa_defs.h>
440Sstevel@tonic-gate #include <sys/int_types.h>
450Sstevel@tonic-gate 
46713Swesolows #if defined(__GNUC__) && defined(_ASM_INLINES) && \
47713Swesolows 	(defined(__i386) || defined(__amd64))
480Sstevel@tonic-gate #include <asm/byteorder.h>
490Sstevel@tonic-gate #endif
500Sstevel@tonic-gate 
510Sstevel@tonic-gate #ifdef	__cplusplus
520Sstevel@tonic-gate extern "C" {
530Sstevel@tonic-gate #endif
540Sstevel@tonic-gate 
550Sstevel@tonic-gate /*
560Sstevel@tonic-gate  * macros for conversion between host and (internet) network byte order
570Sstevel@tonic-gate  */
580Sstevel@tonic-gate 
590Sstevel@tonic-gate #if defined(_BIG_ENDIAN) && !defined(ntohl) && !defined(__lint)
600Sstevel@tonic-gate /* big-endian */
610Sstevel@tonic-gate #define	ntohl(x)	(x)
620Sstevel@tonic-gate #define	ntohs(x)	(x)
630Sstevel@tonic-gate #define	htonl(x)	(x)
647860Sopensolaris@drydog.com #define	htons(x)	(x)
657860Sopensolaris@drydog.com #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
667860Sopensolaris@drydog.com #define	ntohll(x)	(x)
677421SDaniel.Anderson@Sun.COM #define	htonll(x)	(x)
687860Sopensolaris@drydog.com #endif	/* !_XPG4_2 || __EXTENSIONS__ */
690Sstevel@tonic-gate 
700Sstevel@tonic-gate #elif !defined(ntohl) /* little-endian */
710Sstevel@tonic-gate 
720Sstevel@tonic-gate #ifndef	_IN_PORT_T
730Sstevel@tonic-gate #define	_IN_PORT_T
740Sstevel@tonic-gate typedef uint16_t in_port_t;
750Sstevel@tonic-gate #endif
760Sstevel@tonic-gate 
770Sstevel@tonic-gate #ifndef	_IN_ADDR_T
780Sstevel@tonic-gate #define	_IN_ADDR_T
790Sstevel@tonic-gate typedef uint32_t in_addr_t;
800Sstevel@tonic-gate #endif
810Sstevel@tonic-gate 
820Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__) || defined(_XPG5)
830Sstevel@tonic-gate extern	uint32_t htonl(uint32_t);
840Sstevel@tonic-gate extern	uint16_t htons(uint16_t);
857421SDaniel.Anderson@Sun.COM extern	uint32_t ntohl(uint32_t);
860Sstevel@tonic-gate extern	uint16_t ntohs(uint16_t);
870Sstevel@tonic-gate #else
880Sstevel@tonic-gate extern	in_addr_t htonl(in_addr_t);
890Sstevel@tonic-gate extern	in_port_t htons(in_port_t);
907421SDaniel.Anderson@Sun.COM extern	in_addr_t ntohl(in_addr_t);
910Sstevel@tonic-gate extern	in_port_t ntohs(in_port_t);
927860Sopensolaris@drydog.com #endif	/* !_XPG4_2 || __EXTENSIONS__ || _XPG5 */
937860Sopensolaris@drydog.com 
947860Sopensolaris@drydog.com #if defined(_LP64) || defined(_LONGLONG_TYPE)
957860Sopensolaris@drydog.com #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
967421SDaniel.Anderson@Sun.COM extern	uint64_t htonll(uint64_t);
977421SDaniel.Anderson@Sun.COM extern	uint64_t ntohll(uint64_t);
987860Sopensolaris@drydog.com #endif	/* !_XPG4_2 || __EXTENSIONS__ */
997860Sopensolaris@drydog.com #endif	/* _LP64 || _LONGLONG_TYPE  */
1000Sstevel@tonic-gate #endif
1010Sstevel@tonic-gate 
1020Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
1030Sstevel@tonic-gate 
1040Sstevel@tonic-gate /*
1050Sstevel@tonic-gate  * Macros to reverse byte order
1060Sstevel@tonic-gate  */
1070Sstevel@tonic-gate #define	BSWAP_8(x)	((x) & 0xff)
1087500SDaniel.Anderson@Sun.COM #if !defined(__i386) && !defined(__amd64)
1090Sstevel@tonic-gate #define	BSWAP_16(x)	((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))
1107500SDaniel.Anderson@Sun.COM #define	BSWAP_32(x)	(((uint32_t)(x) << 24) | \
1117500SDaniel.Anderson@Sun.COM 			(((uint32_t)(x) << 8) & 0xff0000) | \
1127500SDaniel.Anderson@Sun.COM 			(((uint32_t)(x) >> 8) & 0xff00) | \
1137500SDaniel.Anderson@Sun.COM 			((uint32_t)(x)  >> 24))
1147500SDaniel.Anderson@Sun.COM #else /* x86 */
1157500SDaniel.Anderson@Sun.COM #define	BSWAP_16(x)	htons(x)
1167500SDaniel.Anderson@Sun.COM #define	BSWAP_32(x)	htonl(x)
1177500SDaniel.Anderson@Sun.COM #endif	/* !__i386 && !__amd64 */
1187500SDaniel.Anderson@Sun.COM 
1197860Sopensolaris@drydog.com #if defined(_LP64) || defined(_LONGLONG_TYPE)
1207860Sopensolaris@drydog.com #if (!defined(__i386) && !defined(__amd64))
1217500SDaniel.Anderson@Sun.COM #define	BSWAP_64(x)	(((uint64_t)(x) << 56) | \
1227500SDaniel.Anderson@Sun.COM 			(((uint64_t)(x) << 40) & 0xff000000000000ULL) | \
1237500SDaniel.Anderson@Sun.COM 			(((uint64_t)(x) << 24) & 0xff0000000000ULL) | \
1247500SDaniel.Anderson@Sun.COM 			(((uint64_t)(x) << 8)  & 0xff00000000ULL) | \
1257500SDaniel.Anderson@Sun.COM 			(((uint64_t)(x) >> 8)  & 0xff000000ULL) | \
1267500SDaniel.Anderson@Sun.COM 			(((uint64_t)(x) >> 24) & 0xff0000ULL) | \
1277500SDaniel.Anderson@Sun.COM 			(((uint64_t)(x) >> 40) & 0xff00ULL) | \
1287500SDaniel.Anderson@Sun.COM 			((uint64_t)(x)  >> 56))
1297860Sopensolaris@drydog.com #else /* x86 */
1307500SDaniel.Anderson@Sun.COM #define	BSWAP_64(x)	htonll(x)
1317860Sopensolaris@drydog.com #endif	/* !__i386 && !__amd64 */
1327860Sopensolaris@drydog.com #else /* no uint64_t */
1337860Sopensolaris@drydog.com #define	BSWAP_64(x)	((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32))
1347860Sopensolaris@drydog.com #endif	/* _LP64 || _LONGLONG_TYPE  */
1350Sstevel@tonic-gate 
1360Sstevel@tonic-gate #define	BMASK_8(x)	((x) & 0xff)
1370Sstevel@tonic-gate #define	BMASK_16(x)	((x) & 0xffff)
1380Sstevel@tonic-gate #define	BMASK_32(x)	((x) & 0xffffffff)
1390Sstevel@tonic-gate #define	BMASK_64(x)	(x)
1400Sstevel@tonic-gate 
1410Sstevel@tonic-gate /*
1420Sstevel@tonic-gate  * Macros to convert from a specific byte order to/from native byte order
1430Sstevel@tonic-gate  */
1440Sstevel@tonic-gate #ifdef _BIG_ENDIAN
1450Sstevel@tonic-gate #define	BE_8(x)		BMASK_8(x)
1460Sstevel@tonic-gate #define	BE_16(x)	BMASK_16(x)
1470Sstevel@tonic-gate #define	BE_32(x)	BMASK_32(x)
1480Sstevel@tonic-gate #define	BE_64(x)	BMASK_64(x)
1490Sstevel@tonic-gate #define	LE_8(x)		BSWAP_8(x)
1500Sstevel@tonic-gate #define	LE_16(x)	BSWAP_16(x)
1510Sstevel@tonic-gate #define	LE_32(x)	BSWAP_32(x)
1520Sstevel@tonic-gate #define	LE_64(x)	BSWAP_64(x)
1530Sstevel@tonic-gate #else
1540Sstevel@tonic-gate #define	LE_8(x)		BMASK_8(x)
1550Sstevel@tonic-gate #define	LE_16(x)	BMASK_16(x)
1560Sstevel@tonic-gate #define	LE_32(x)	BMASK_32(x)
1570Sstevel@tonic-gate #define	LE_64(x)	BMASK_64(x)
1580Sstevel@tonic-gate #define	BE_8(x)		BSWAP_8(x)
1590Sstevel@tonic-gate #define	BE_16(x)	BSWAP_16(x)
1600Sstevel@tonic-gate #define	BE_32(x)	BSWAP_32(x)
1610Sstevel@tonic-gate #define	BE_64(x)	BSWAP_64(x)
1620Sstevel@tonic-gate #endif
1630Sstevel@tonic-gate 
1645331Samw /*
1655331Samw  * Macros to read unaligned values from a specific byte order to
1665331Samw  * native byte order
1675331Samw  */
1685331Samw 
1695331Samw #define	BE_IN8(xa) \
1705331Samw 	*((uint8_t *)(xa))
1715331Samw 
1727500SDaniel.Anderson@Sun.COM #if !defined(__i386) && !defined(__amd64)
1735331Samw #define	BE_IN16(xa) \
1747500SDaniel.Anderson@Sun.COM 	(((uint16_t)BE_IN8(xa) << 8) | BE_IN8((uint8_t *)(xa) + 1))
1755331Samw 
1765331Samw #define	BE_IN32(xa) \
1777500SDaniel.Anderson@Sun.COM 	(((uint32_t)BE_IN16(xa) << 16) | BE_IN16((uint8_t *)(xa) + 2))
1787500SDaniel.Anderson@Sun.COM 
1797500SDaniel.Anderson@Sun.COM #else /* x86 */
1807500SDaniel.Anderson@Sun.COM #define	BE_IN16(xa) htons(*((uint16_t *)(void *)(xa)))
1817500SDaniel.Anderson@Sun.COM #define	BE_IN32(xa) htonl(*((uint32_t *)(void *)(xa)))
1827500SDaniel.Anderson@Sun.COM #endif	/* !__i386 && !__amd64 */
1835331Samw 
184*9162SPeter.Dunlap@Sun.COM #if (!defined(__i386) && !defined(__amd64)) || \
185*9162SPeter.Dunlap@Sun.COM 	(!defined(_LP64) && !defined(_LONGLONG_TYPE))
1865331Samw #define	BE_IN64(xa) \
1877500SDaniel.Anderson@Sun.COM 	(((uint64_t)BE_IN32(xa) << 32) | BE_IN32((uint8_t *)(xa) + 4))
1887860Sopensolaris@drydog.com #else /* x86 */
1897500SDaniel.Anderson@Sun.COM #define	BE_IN64(xa) htonll(*((uint64_t *)(void *)(xa)))
190*9162SPeter.Dunlap@Sun.COM #endif /* (!__i386 && !__amd64) || (!_LP64 && !_LONGLONG_TYPE) */
1915331Samw 
1925331Samw #define	LE_IN8(xa) \
1935331Samw 	*((uint8_t *)(xa))
1945331Samw 
1955331Samw #define	LE_IN16(xa) \
1965331Samw 	(((uint16_t)LE_IN8((uint8_t *)(xa) + 1) << 8) | LE_IN8(xa))
1975331Samw 
1985331Samw #define	LE_IN32(xa) \
1995331Samw 	(((uint32_t)LE_IN16((uint8_t *)(xa) + 2) << 16) | LE_IN16(xa))
2005331Samw 
2015331Samw #define	LE_IN64(xa) \
2025331Samw 	(((uint64_t)LE_IN32((uint8_t *)(xa) + 4) << 32) | LE_IN32(xa))
2035331Samw 
2045331Samw /*
2055331Samw  * Macros to write unaligned values from native byte order to a specific byte
2065331Samw  * order.
2075331Samw  */
2085331Samw 
2095331Samw #define	BE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv);
2105331Samw 
2115331Samw #define	BE_OUT16(xa, yv) \
2125331Samw 	BE_OUT8((uint8_t *)(xa) + 1, yv); \
2135331Samw 	BE_OUT8((uint8_t *)(xa), (yv) >> 8);
2145331Samw 
2155331Samw #define	BE_OUT32(xa, yv) \
2165331Samw 	BE_OUT16((uint8_t *)(xa) + 2, yv); \
2175331Samw 	BE_OUT16((uint8_t *)(xa), (yv) >> 16);
2185331Samw 
2197500SDaniel.Anderson@Sun.COM #if (!defined(__i386) && !defined(__amd64)) || \
2207860Sopensolaris@drydog.com 	(!defined(_LP64) && !defined(_LONGLONG_TYPE))
2215331Samw #define	BE_OUT64(xa, yv) \
2225331Samw 	BE_OUT32((uint8_t *)(xa) + 4, yv); \
2235331Samw 	BE_OUT32((uint8_t *)(xa), (yv) >> 32);
2247860Sopensolaris@drydog.com #else /* x86 with uint64_t */
2257500SDaniel.Anderson@Sun.COM #define	BE_OUT64(xa, yv) *((uint64_t *)(void *)(xa)) = htonll((uint64_t)(yv));
2267860Sopensolaris@drydog.com #endif	/* (!__i386 && !__amd64) || (!_LP64 && !_LONGLONG_TYPE) */
2275331Samw 
2285331Samw #define	LE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv);
2295331Samw 
2305331Samw #define	LE_OUT16(xa, yv) \
2315331Samw 	LE_OUT8((uint8_t *)(xa), yv); \
2325331Samw 	LE_OUT8((uint8_t *)(xa) + 1, (yv) >> 8);
2335331Samw 
2345331Samw #define	LE_OUT32(xa, yv) \
2355331Samw 	LE_OUT16((uint8_t *)(xa), yv); \
2365331Samw 	LE_OUT16((uint8_t *)(xa) + 2, (yv) >> 16);
2375331Samw 
2385331Samw #define	LE_OUT64(xa, yv) \
2395331Samw 	LE_OUT32((uint8_t *)(xa), yv); \
2405331Samw 	LE_OUT32((uint8_t *)(xa) + 4, (yv) >> 32);
2415331Samw 
2427860Sopensolaris@drydog.com #endif	/* !_XPG4_2 || __EXTENSIONS__ */
2430Sstevel@tonic-gate 
2440Sstevel@tonic-gate #ifdef	__cplusplus
2450Sstevel@tonic-gate }
2460Sstevel@tonic-gate #endif
2470Sstevel@tonic-gate 
2480Sstevel@tonic-gate #endif /* _SYS_BYTEORDER_H */
249