/*****************************************************************************\*                     EFSL - Embedded Filesystems Library                     **                     -----------------------------------                     **                                                                             ** Filename : extract.h                                                        ** Release  : 0.3 - devel                                                      ** Description : This file contains functions to copy structures that get      **               corrupted when using direct memory copy                       **                                                                             ** This program is free software; you can redistribute it and/or               ** modify it under the terms of the GNU General Public License                 ** as published by the Free Software Foundation; version 2                     ** of the License.                                                             **                                                                             ** This program is distributed in the hope that it will be useful,             ** but WITHOUT ANY WARRANTY; without even the implied warranty of              ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               ** GNU General Public License for more details.                                **                                                                             ** As a special exception, if other files instantiate templates or             ** use macros or inline functions from this file, or you compile this          ** file and link it with other works to produce a work based on this file,     ** this file does not by itself cause the resulting work to be covered         ** by the GNU General Public License. However the source code for this         ** file must still be made available in accordance with section (3) of         ** the GNU General Public License.                                             **                                                                             ** This exception does not invalidate any other reasons why a work based       ** on this file might be covered by the GNU General Public License.            **                                                                             **                                                    (c)2006 Lennart Yseboodt **                                                    (c)2006 Michael De Nil   *\*****************************************************************************/#ifndef __EXTRACT_H_#define __EXTRACT_H_/*****************************************************************************/#include "config.h"#include "types.h"/*****************************************************************************/#if !(defined(HOST_LITTLE_ENDIAN)) && !(defined(HOST_BIG_ENDIAN))#error Endianess undefined, see config.h#elif defined(HOST_LITTLE_ENDIAN) && (defined(HOST_BIG_ENDIAN))#error Endianess defined as little and big, see config.h#endif/*****************************************************************************/#define end_conv16(x)  ((((euint16)(x) & 0xff00) >> 8) | \                      (((euint16)(x) & 0x00ff) << 8))#define end_conv32(x)  ((((euint32)(x) & 0xff000000) >> 24) | \                       (((euint32)(x) & 0x00ff0000) >> 8)  | \                       (((euint32)(x) & 0x0000ff00) << 8)  | \                       (((euint32)(x) & 0x000000ff) << 24))/*****************************************************************************/#if defined(BYTE_ALIGNMENT)	#define ex_getb16(buf) (*((euint16*)(buf)))	#define ex_setb16(buf,data) *((euint16*)(buf))=(data)	#define ex_getb32(buf) (*((euint32*)(buf)))	#define ex_setb32(buf,data) *((euint32*)(buf))=(data)#else	#define ex_getb16(buf) \		((euint16)(*((euint8*)(buf)+1)<<8) + \		 (euint16)(*((euint8*)(buf)+0)<<0))	void ex_setb16(euint8* buf,euint16 data);	#define ex_getb32(buf) \		((euint32)(*((euint8*)(buf)+3)<<24) + \		 (euint32)(*((euint8*)(buf)+2)<<16) + \		 (euint32)(*((euint8*)(buf)+1)<<8)  + \		 (euint32)(*((euint8*)(buf)+0)<<0))	void ex_setb32(euint8* buf,euint32 data);#endif#if defined(HOST_LITTLE_ENDIAN)	#define ex_lth16(buf) ex_getb16(buf)	#define ex_lth32(buf) ex_getb32(buf)	#define ex_bth16(buf) end_conv16(ex_getb16(buf))	#define ex_bth32(buf) end_conv32(ex_getb32(buf))		#define ex_htl16(buf) ex_setb16(buf)	#define ex_htl32(buf) ex_setb32(buf)	#define ex_htb16(buf) ex_setb16(end_conv16(buf))	#define ex_htb32(buf) ex_setb32(end_conv32(buf))#elif defined(HOST_BIG_ENDIAN)	#define ex_lth16(buf) end_conv16(ex_getb16(buf))	#define ex_lth32(buf) end_conv32(ex_getb32(buf))	#define ex_bth16(buf) ex_getb16(buf)	#define ex_bth32(buf) ex_getb32(buf)		#define ex_htl16(buf) ex_setb16(end_conv16(buf))	#define ex_htl32(buf) ex_setb32(end_conv32(buf))	#define ex_htb16(buf) ex_setb16(buf)	#define ex_htb32(buf) ex_setb32(buf)#endif#endif