workbench/devs/networks/rhine/endian.h

   1 /*
   2
   3 Copyright (C) 2005 Neil Cafferkey
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful, but
  11 WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  13 General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  18 MA 02111-1307, USA.
  19
  20 */
  21
  22 #ifndef ENDIAN_H
  23 #define ENDIAN_H
  24
  25
  26 #include <exec/types.h>
  27
  28
  29 /* Endianness macros */
  30
  31 #define FlipWord(A) \
  32    ({ \
  33       UWORD _FlipWord_A = (A); \
  34       _FlipWord_A = (_FlipWord_A << 8) | (_FlipWord_A >> 8); \
  35    })
  36
  37 #define FlipLong(A) \
  38    ({ \
  39       ULONG _FlipLong_A = (A); \
  40       _FlipLong_A = \
  41          (FlipWord(_FlipLong_A) << 16) | FlipWord(_FlipLong_A >> 16); \
  42    })
  43
  44 #ifndef __i386__ /* Big endian */
  45
  46 #define BEWord(A) \
  47    (A)
  48
  49 #define BELong(A) \
  50    (A)
  51
  52 #define LEWord(A) \
  53    FlipWord(A)
  54
  55 #define LELong(A) \
  56    FlipLong(A)
  57
  58 #else
  59
  60 #define BEWord(A) \
  61    FlipWord(A)
  62
  63 #define BELong(A) \
  64    FlipLong(A)
  65
  66 #define LEWord(A) \
  67    (A)
  68
  69 #define LELong(A) \
  70    (A)
  71
  72 #endif
  73
  74 #define MakeBEWord(A) \
  75    BEWord(A)
  76
  77 #define MakeBELong(A) \
  78    BELong(A)
  79
  80 #define MakeLEWord(A) \
  81    LEWord(A)
  82
  83 #define MakeLELong(A) \
  84    LELong(A)
  85
  86
  87 #endif