1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _ASM_BYTEORDER_H 28 #define _ASM_BYTEORDER_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/types.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 #if !defined(__lint) && defined(__GNUC__) 39 40 #if defined(__i386) || defined(__amd64) 41 42 extern __inline__ uint32_t htonl(uint32_t value) 43 { 44 __asm__("bswap %0" : "+r" (value)); 45 return (value); 46 } 47 48 extern __inline__ uint32_t ntohl(uint32_t value) 49 { 50 __asm__("bswap %0" : "+r" (value)); 51 return (value); 52 } 53 54 extern __inline__ uint16_t htons(uint16_t value) 55 { 56 #if defined(__amd64) 57 __asm__("xchgb %h0, %b0" : "+Q" (value)); 58 #elif defined(__i386) 59 __asm__("xchgb %h0, %b0" : "+q" (value)); 60 #endif 61 return (value); 62 } 63 64 extern __inline__ uint16_t ntohs(uint16_t value) 65 { 66 #if defined(__amd64) 67 __asm__("xchgb %h0, %b0" : "+Q" (value)); 68 #elif defined(__i386) 69 __asm__("xchgb %h0, %b0" : "+q" (value)); 70 #endif 71 return (value); 72 } 73 74 #endif /* __i386 || __amd64 */ 75 76 #endif /* !__lint && __GNUC__ */ 77 78 #ifdef __cplusplus 79 } 80 #endif 81 82 #endif /* _ASM_BYTEORDER_H */ 83