workbench/devs/networks/rtl8029/endian.h

   1 /*
   2
   3 Copyright (C) 2001-2005 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 /* Endianness macros */
  29
  30 #define FlipWord(A) \
  31    ({ \
  32       UWORD _FlipWord_A = (A); \
  33       _FlipWord_A = (_FlipWord_A << 8) | (_FlipWord_A >> 8); \
  34    })
  35
  36 #define FlipLong(A) \
  37    ({ \
  38       ULONG _FlipLong_A = (A); \
  39       _FlipLong_A = \
  40          (FlipWord(_FlipLong_A) << 16) | FlipWord(_FlipLong_A >> 16); \
  41    })
  42
  43 #ifndef __i386__ /* Big endian */
  44
  45 #define BEWord(A) \
  46    (A)
  47
  48 #define BELong(A) \
  49    (A)
  50
  51 #define LEWord(A) \
  52    FlipWord(A)
  53
  54 #define LELong(A) \
  55    FlipLong(A)
  56
  57 #else
  58
  59 #define BEWord(A) \
  60    FlipWord(A)
  61
  62 #define BELong(A) \
  63    FlipLong(A)
  64
  65 #define LEWord(A) \
  66    (A)
  67
  68 #define LELong(A) \
  69    (A)
  70
  71 #endif
  72
  73 #define MakeBEWord(A) \
  74    BEWord(A)
  75
  76 #define MakeBELong(A) \
  77    BELong(A)
  78
  79 #define MakeLEWord(A) \
  80    LEWord(A)
  81
  82 #define MakeLELong(A) \
  83    LELong(A)
  84
  85
  86 #endif