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Annotation of qemu/roms/openbios/fs/hfsplus/include/swab.h, revision 1.1.1.1

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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