projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b | 1 | /* |
| 91447636 | 2 | * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. |
| 1c79356b | 3 | * |
| 8f6c56a5 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 1c79356b | 5 | * |
| 8f6c56a5 A |
6 | * This file contains Original Code and/or Modifications of Original Code |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. The rights granted to you under the License | |
| 10 | * may not be used to create, or enable the creation or redistribution of, | |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any | |
| 13 | * terms of an Apple operating system software license agreement. | |
| 14 | * | |
| 15 | * Please obtain a copy of the License at | |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| 17 | * | |
| 18 | * The Original Code and all software distributed under the License are | |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 23 | * Please see the License for the specific language governing rights and | |
| 8ad349bb | 24 | * limitations under the License. |
| 8f6c56a5 A |
25 | * |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ | |
| 1c79356b A |
27 | */ |
| 28 | /* | |
| 29 | * @OSF_COPYRIGHT@ | |
| 30 | * | |
| 31 | */ | |
| 32 | ||
| 33 | #ifndef _MACHINE_ENDIAN_H_ | |
| 34 | #define _MACHINE_ENDIAN_H_ | |
| 35 | ||
| 36 | /* | |
| 37 | * Definitions for byte order, | |
| 38 | * according to byte significance from low address to high. | |
| 39 | */ | |
| 40 | #define LITTLE_ENDIAN 1234 /* least-significant byte first (vax) */ | |
| 41 | #define BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */ | |
| 42 | #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp) */ | |
| 43 | ||
| 44 | #define BYTE_ORDER LITTLE_ENDIAN /* byte order on i386 */ | |
| 45 | #define ENDIAN LITTLE | |
| 46 | ||
| 47 | /* | |
| 48 | * Macros for network/external number representation conversion. | |
| 1c79356b A |
49 | * Use GNUC support to inline the byteswappers. |
| 50 | */ | |
| 51 | ||
| 91447636 A |
52 | #if !defined(ntohs) |
| 53 | unsigned short ntohs(unsigned short); | |
| 1c79356b A |
54 | extern __inline__ |
| 55 | unsigned short | |
| 56 | ntohs(unsigned short w_int) | |
| 57 | { | |
| 58 | register unsigned short w = w_int; | |
| 59 | __asm__ volatile("xchgb %h1,%b1" : "=q" (w) : "0" (w)); | |
| 60 | return (w); /* zero-extend for compat */ | |
| 61 | } | |
| 91447636 | 62 | #endif |
| 1c79356b | 63 | |
| 91447636 A |
64 | #if !defined(htons) |
| 65 | unsigned short htons(unsigned short); | |
| 1c79356b | 66 | #define htons ntohs |
| 91447636 | 67 | #endif |
| 1c79356b | 68 | |
| 91447636 A |
69 | #if !defined(ntohl) |
| 70 | unsigned long ntohl(unsigned long); | |
| 1c79356b A |
71 | extern __inline__ |
| 72 | unsigned long | |
| 73 | ntohl(register unsigned long value) | |
| 74 | { | |
| 75 | register unsigned long l = value; | |
| 76 | __asm__ volatile("bswap %0" : "=r" (l) : "0" (l)); | |
| 77 | return l; | |
| 78 | } | |
| 91447636 | 79 | #endif |
| 1c79356b | 80 | |
| 91447636 A |
81 | #if !defined(htonl) |
| 82 | unsigned long htonl(unsigned long); | |
| 1c79356b | 83 | #define htonl ntohl |
| 91447636 | 84 | #endif |
| 1c79356b A |
85 | |
| 86 | #define NTOHL(x) (x) = ntohl((unsigned long)x) | |
| 87 | #define NTOHS(x) (x) = ntohs((unsigned short)x) | |
| 88 | #define HTONL(x) (x) = htonl((unsigned long)x) | |
| 89 | #define HTONS(x) (x) = htons((unsigned short)x) | |
| 90 | ||
| 91 | #endif |