drivers/staging/vt6655/tmacro.h

   1 /*
   2  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
   3  * All rights reserved.
   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,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * File: tmacro.h
  16  *
  17  * Purpose: define basic common types and macros
  18  *
  19  * Author: Tevin Chen
  20  *
  21  * Date: May 21, 1996
  22  *
  23  */
  24
  25 #ifndef __TMACRO_H__
  26 #define __TMACRO_H__
  27
  28 /****** Common helper macros ***********************************************/
  29
  30 #if !defined(LOBYTE)
  31 #define LOBYTE(w)           ((unsigned char)(w))
  32 #endif
  33 #if !defined(HIBYTE)
  34 #define HIBYTE(w)           ((unsigned char)(((unsigned short)(w) >> 8) & 0xFF))
  35 #endif
  36
  37 #if !defined(LOWORD)
  38 #define LOWORD(d)           ((unsigned short)(d))
  39 #endif
  40 #if !defined(HIWORD)
  41 #define HIWORD(d)           ((unsigned short)((((unsigned long)(d)) >> 16) & 0xFFFF))
  42 #endif
  43
  44 #define LODWORD(q)          ((q).u.dwLowDword)
  45 #define HIDWORD(q)          ((q).u.dwHighDword)
  46
  47 #if !defined(MAKEWORD)
  48 #define MAKEWORD(lb, hb)    ((unsigned short)(((unsigned char)(lb)) | (((unsigned short)((unsigned char)(hb))) << 8)))
  49 #endif
  50 #if !defined(MAKEDWORD)
  51 #define MAKEDWORD(lw, hw)   ((unsigned long)(((unsigned short)(lw)) | (((unsigned long)((unsigned short)(hw))) << 16)))
  52 #endif
  53
  54 #endif /* __TMACRO_H__ */