1 /* @(#)byteorder.h 1.8 09/05/05 Copyright 1998,1999 Heiko Eissfeldt, Copyright 2006-2009 J. Schilling */ 2 3 #if !defined(_BYTEORDER_H) || !defined(MYBYTE_ORDER) 4 #undef _BYTEORDER_H 5 #define _BYTEORDER_H 6 #undef MYBYTE_ORDER 7 #define MYBYTE_ORDER 1 8 9 #include <schily/btorder.h> 10 11 12 /* 13 * supply the byte order macros 14 */ 15 /* 16 * The contents of this file are subject to the terms of the 17 * Common Development and Distribution License, Version 1.0 only 18 * (the "License"). You may not use this file except in compliance 19 * with the License. 20 * 21 * See the file CDDL.Schily.txt in this distribution for details. 22 * A copy of the CDDL is also available via the Internet at 23 * http://www.opensource.org/licenses/cddl1.txt 24 * 25 * When distributing Covered Code, include this CDDL HEADER in each 26 * file and include the License file CDDL.Schily.txt from this distribution. 27 */ 28 29 #if defined(WORDS_BIGENDIAN) 30 #define MY_BIG_ENDIAN 1 31 #define MY_LITTLE_ENDIAN 0 32 #else 33 #define MY_BIG_ENDIAN 0 34 #define MY_LITTLE_ENDIAN 1 35 #endif 36 37 #undef cpu_to_le32 38 #undef cpu_to_le16 39 #undef cpu_to_be32 40 #undef cpu_to_be16 41 #undef le32_to_cpu 42 #undef le16_to_cpu 43 #undef be32_to_cpu 44 #undef be16_to_cpu 45 46 #define revert4bytes(x) \ 47 ((unsigned long int) ((((unsigned long int)(x) & ULONG_C(0x000000ff)) << 24) | \ 48 (((unsigned long int)(x) & ULONG_C(0x0000ff00)) << 8) | \ 49 (((unsigned long int)(x) & ULONG_C(0x00ff0000)) >> 8) | \ 50 (((unsigned long int)(x) & ULONG_C(0xff000000)) >> 24))) 51 #define revert2bytes(x) \ 52 ((unsigned short int) ((((unsigned short int)(x) & 0x00ff) << 8) | \ 53 (((unsigned short int)(x) & 0xff00) >> 8))) 54 55 #if MY_BIG_ENDIAN == 1 56 #define cpu_to_le32(x) revert4bytes(x) 57 #define cpu_to_le16(x) revert2bytes(x) 58 #define le32_to_cpu(x) cpu_to_le32(x) 59 #define le16_to_cpu(x) cpu_to_le16(x) 60 #define cpu_to_be32(x) (x) 61 #define cpu_to_be16(x) (x) 62 #define be32_to_cpu(x) (x) 63 #define be16_to_cpu(x) (x) 64 #else 65 #define cpu_to_be32(x) revert4bytes(x) 66 #define cpu_to_be16(x) revert2bytes(x) 67 #define be32_to_cpu(x) cpu_to_be32(x) 68 #define be16_to_cpu(x) cpu_to_be16(x) 69 #define cpu_to_le32(x) (x) 70 #define cpu_to_le16(x) (x) 71 #define le32_to_cpu(x) (x) 72 #define le16_to_cpu(x) (x) 73 #endif 74 75 #define GET_LE_UINT_FROM_CHARP(p) ((unsigned int)((*(p+3))<<24)|((*(p+2))<<16)|((*(p+1))<<8)|(*(p))) 76 #define GET_BE_UINT_FROM_CHARP(p) ((unsigned int)((*(p))<<24)|((*(p+1))<<16)|((*(p+2))<<8)|(*(p+3))) 77 78 #endif /* _BYTEORDER_H */ 79