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  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * File: tmacro.h
  20  *
  21  * Purpose: define basic common types and macros
  22  *
  23  * Author: Tevin Chen
  24  *
  25  * Date: May 21, 1996
  26  *
  27  */
  28
  29
  30 #ifndef __TMACRO_H__
  31 #define __TMACRO_H__
  32
  33
  34 #if !defined(__TTYPE_H__)
  35 #include "ttype.h"
  36 #endif
  37
  38
  39
  40
  41 /****** Common helper macros ***********************************************/
  42
  43 #if !defined(LONIBBLE)
  44 #define LONIBBLE(b)         ((BYTE)(b) & 0x0F)
  45 #endif
  46 #if !defined(HINIBBLE)
  47 #define HINIBBLE(b)         ((BYTE)(((WORD)(b) >> 4) & 0x0F))
  48 #endif
  49
  50 #if !defined(LOBYTE)
  51 #define LOBYTE(w)           ((BYTE)(w))
  52 #endif
  53 #if !defined(HIBYTE)
  54 #define HIBYTE(w)           ((BYTE)(((WORD)(w) >> 8) & 0xFF))
  55 #endif
  56
  57 #if !defined(LOWORD)
  58 #define LOWORD(d)           ((WORD)(d))
  59 #endif
  60 #if !defined(HIWORD)
  61 #define HIWORD(d)           ((WORD)((((DWORD)(d)) >> 16) & 0xFFFF))
  62 #endif
  63
  64 #define LODWORD(q)          ((q).u.dwLowDword)
  65 #define HIDWORD(q)          ((q).u.dwHighDword)
  66
  67
  68
  69 #if !defined(MAKEBYTE)
  70 #define MAKEBYTE(ln, hn)    ((BYTE)(((BYTE)(ln) & 0x0F) | ((BYTE)(hn) << 4)))
  71 #endif
  72 #if !defined(MAKEWORD)
  73 #define MAKEWORD(lb, hb)    ((WORD)(((BYTE)(lb)) | (((WORD)((BYTE)(hb))) << 8)))
  74 #endif
  75 #if !defined(MAKEDWORD)
  76 #define MAKEDWORD(lw, hw)   ((DWORD)(((WORD)(lw)) | (((DWORD)((WORD)(hw))) << 16)))
  77 #endif
  78 #if !defined(MAKEQWORD)
  79 #define MAKEQWORD(ld, hd, pq) {pq->u.dwLowDword = ld; pq->u.dwHighDword = hd;}
  80 #endif
  81
  82 #if !defined(MAKELONG)
  83 #define MAKELONG(low, high) ((LONG)(((WORD)(low)) | (((DWORD)((WORD)(high))) << 16)))
  84 #endif
  85
  86
  87
  88 // Bytes Reverse: big endian to little endian convert
  89 #if !defined(REVWORD)
  90 #define REVWORD(w) ((WORD)( ((WORD)(w) >> 8) | ((WORD)(w) << 8) ))
  91 #endif
  92 #if !defined(REVDWORD)
  93 #define REVDWORD(d) (MAKEDWORD(MAKEWORD(HIBYTE(HIWORD(d)),LOBYTE(HIWORD(d))),MAKEWORD(HIBYTE(LOWORD(d)),LOBYTE(LOWORD(d)))))
  94 #endif
  95
  96 /* map to known network names */
  97 /*
  98 #define ntohs(x)        REVWORD(x)
  99 #define ntohl(x)        REVDWORD(x)
 100 #define htons(x)        REVWORD(x)
 101 #define htonl(x)        REVDWORD(x)
 102 */
 103
 104
 105 /*
 106 #ifndef NOMINMAX
 107 #ifndef max
 108 #define max(a,b)            (((a) > (b)) ? (a) : (b))
 109 #endif
 110 #ifndef min
 111 #define min(a,b)            (((a) < (b)) ? (a) : (b))
 112 #endif
 113 #endif // NOMINMAX
 114 */
 115
 116
 117
 118 /****** Misc macros ********************************************************/
 119
 120 // get the field offset in the type(struct, class, ...)
 121 #define OFFSET(type, field) ((int)(&((type NEAR*)1)->field)-1)
 122
 123
 124 /* string equality shorthand */
 125 #define STR_EQ(x, y)        (strcmp(x, y) == 0)
 126 #define STR_NE(x, y)        (strcmp(x, y) != 0)
 127
 128
 129 // calculate element # of array
 130 #define ELEMENT_NUM(array)  (sizeof(array) / sizeof(array[0]))
 131 //#define ARRAY_SIZE(a)       (sizeof(a) / sizeof(a[0]))
 132
 133
 134 // null statement
 135 #define NULL_FUNC()
 136
 137
 138 /* Since not all compilers support structure assignment, the ASSIGN()
 139  * macro is used. This controls how it's actually implemented.
 140  */
 141 #ifdef  NOSTRUCTASSIGN  /* Version for old compilers that don't support it */
 142 #define ASSIGN(a,b)     memcpy((char *)&(a),(char *)&(b),sizeof(b);
 143 #else                   /* Version for compilers that do */
 144 #define ASSIGN(a,b)     ((a) = (b))
 145 #endif
 146
 147
 148
 149
 150 #endif // __TMACRO_H__
 151
 152