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/*
* libhfs - library for reading and writing Macintosh HFS volumes
*
* Copyright (C) 2000 Klaus Halfmann <klaus.halfmann@feri.de>
* Original work 1996-1998 Robert Leslie <rob@mars.org>
*
* This file defines some byte swapping function. I did not find this
* in any standard or linux way.
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* $Id: swab.h,v 1.1.1.1 2002/03/05 19:50:29 klaus Exp $
*/
#include "config.h"
#include "libc/byteorder.h"
/* basic fuction:
value = swab_inc(ptr);
ptr is afterwards incremented by sizeof(value)
*/
#ifndef CONFIG_BIG_ENDIAN
#define bswabU16(val) __bswap16(val)
#define bswabU16_inc(ptr) (__extension__ ({ UInt16 v=__bswap16(*((UInt16*) (ptr))); ptr+=sizeof(UInt16);v;}))
#define bswabU32_inc(ptr) (__extension__ ({ UInt32 v=__bswap32(*((UInt32*) (ptr))); ptr+=sizeof(UInt32);v;}))
#define bswabU64_inc(ptr) (__extension__ ({ UInt64 v=__bswap64(*((UInt64*) (ptr))); ptr+=sizeof(UInt64);v;}))
#define bstoreU16_inc(ptr, val) do {(*((UInt16*) (ptr))) = __bswap16(val); ptr+=sizeof(UInt16);} while (0)
#define bstoreU32_inc(ptr, val) do {(*((UInt32*) (ptr))) = __bswap32(val); ptr+=sizeof(UInt32);} while (0)
#define bstoreU64_inc(ptr, val) do {(*((UInt64*) (ptr))) = __bswap64(val); ptr+=sizeof(UInt64);} while (0)
#else // BYTE_ORDER == BIG_ENDIAN
#define bswabU16(val) val
#define bswabU16_inc(ptr) (__extension__ ({ UInt16 v=(*((UInt16*) (ptr))); ptr+=sizeof(UInt16);v;}))
#define bswabU32_inc(ptr) (__extension__ ({ UInt32 v=(*((UInt32*) (ptr))); ptr+=sizeof(UInt32);v;}))
#define bswabU64_inc(ptr) (__extension__ ({ UInt64 v=(*((UInt64*) (ptr))); ptr+=sizeof(UInt64);v;}))
#define bstoreU16_inc(ptr, val) do {(*((UInt16*) (ptr))) = val; ptr+=sizeof(UInt16);} while (0)
#define bstoreU32_inc(ptr, val) do {(*((UInt32*) (ptr))) = val; ptr+=sizeof(UInt32);} while (0)
#define bstoreU64_inc(ptr, val) do {(*((UInt64*) (ptr))) = val; ptr+=sizeof(UInt64);} while (0)
#endif
/* for the sake of compleetness and readability */
#define bswabU8_inc(ptr) (__extension__ ({ UInt8 v=(*((UInt8*) (ptr))); ptr+=sizeof(UInt8);v;}))
#define bstoreU8_inc(ptr,val) do {(*((UInt8*) (ptr))) = val; ptr+=sizeof(UInt8);} while (0)
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