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Annotation of qemu/roms/openbios/fs/hfsplus/include/swab.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * libhfs - library for reading and writing Macintosh HFS volumes
        !             3:  *
        !             4:  * Copyright (C) 2000 Klaus Halfmann <[email protected]>
        !             5:  * Original work 1996-1998 Robert Leslie <[email protected]>
        !             6:  *
        !             7:  * This file defines some byte swapping function. I did not find this
        !             8:  * in any standard or linux way.
        !             9:  *
        !            10:  * This program is free software; you can redistribute it and/or modify
        !            11:  * it under the terms of the GNU General Public License as published by
        !            12:  * the Free Software Foundation; either version 2 of the License, or
        !            13:  * (at your option) any later version.
        !            14:  *
        !            15:  * This program is distributed in the hope that it will be useful,
        !            16:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            17:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            18:  * GNU General Public License for more details.
        !            19:  *
        !            20:  * You should have received a copy of the GNU General Public License
        !            21:  * along with this program; if not, write to the Free Software
        !            22:  * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
        !            23:  * MA 02110-1301, USA.
        !            24:  *
        !            25:  * $Id: swab.h,v 1.1.1.1 2002/03/05 19:50:29 klaus Exp $
        !            26:  */
        !            27: 
        !            28: #include "config.h"
        !            29: #include "libc/byteorder.h"
        !            30: 
        !            31:  /* basic fuction:
        !            32:     value = swab_inc(ptr);
        !            33:        ptr is afterwards incremented by sizeof(value)
        !            34:  */
        !            35: 
        !            36: #ifndef CONFIG_BIG_ENDIAN
        !            37: 
        !            38: #define bswabU16(val) __bswap16(val)
        !            39: 
        !            40: #define bswabU16_inc(ptr) (__extension__ ({ UInt16 v=__bswap16(*((UInt16*) (ptr))); ptr+=sizeof(UInt16);v;}))
        !            41: #define bswabU32_inc(ptr) (__extension__ ({ UInt32 v=__bswap32(*((UInt32*) (ptr))); ptr+=sizeof(UInt32);v;}))
        !            42: #define bswabU64_inc(ptr) (__extension__ ({ UInt64 v=__bswap64(*((UInt64*) (ptr))); ptr+=sizeof(UInt64);v;}))
        !            43: 
        !            44: #define bstoreU16_inc(ptr, val) do {(*((UInt16*) (ptr))) = __bswap16(val); ptr+=sizeof(UInt16);} while (0)
        !            45: #define bstoreU32_inc(ptr, val) do {(*((UInt32*) (ptr))) = __bswap32(val); ptr+=sizeof(UInt32);} while (0)
        !            46: #define bstoreU64_inc(ptr, val) do {(*((UInt64*) (ptr))) = __bswap64(val); ptr+=sizeof(UInt64);} while (0)
        !            47: 
        !            48: #else // BYTE_ORDER == BIG_ENDIAN
        !            49: 
        !            50: #define bswabU16(val) val
        !            51: 
        !            52: #define bswabU16_inc(ptr) (__extension__ ({ UInt16 v=(*((UInt16*) (ptr))); ptr+=sizeof(UInt16);v;}))
        !            53: #define bswabU32_inc(ptr) (__extension__ ({ UInt32 v=(*((UInt32*) (ptr))); ptr+=sizeof(UInt32);v;}))
        !            54: #define bswabU64_inc(ptr) (__extension__ ({ UInt64 v=(*((UInt64*) (ptr))); ptr+=sizeof(UInt64);v;}))
        !            55: 
        !            56: #define bstoreU16_inc(ptr, val) do {(*((UInt16*) (ptr))) = val; ptr+=sizeof(UInt16);} while (0)
        !            57: #define bstoreU32_inc(ptr, val) do {(*((UInt32*) (ptr))) = val; ptr+=sizeof(UInt32);} while (0)
        !            58: #define bstoreU64_inc(ptr, val) do {(*((UInt64*) (ptr))) = val; ptr+=sizeof(UInt64);} while (0)
        !            59: 
        !            60: #endif
        !            61: 
        !            62: /* for the sake of compleetness and readability */
        !            63: #define bswabU8_inc(ptr)       (__extension__ ({ UInt8 v=(*((UInt8*) (ptr))); ptr+=sizeof(UInt8);v;}))
        !            64: #define bstoreU8_inc(ptr,val)  do {(*((UInt8*) (ptr))) = val; ptr+=sizeof(UInt8);} while (0)

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