tmacro.h

VIA VT6524 8口网管交换机源码

/*
 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
 * All rights reserved.
 *
 * This software is copyrighted by and is the sole property of
 * VIA Networking Technologies, Inc. This software may only be used
 * in accordance with the corresponding license agreement. Any unauthorized
 * use, duplication, transmission, distribution, or disclosure of this
 * software is expressly forbidden.
 *
 * This software is provided by VIA Networking Technologies, Inc. "as is"
 * and any express or implied warranties, including, but not limited to, the
 * implied warranties of merchantability and fitness for a particular purpose
 * are disclaimed. In no event shall VIA Networking Technologies, Inc.
 * be liable for any direct, indirect, incidental, special, exemplary, or
 * consequential damages.
 *
 *
 * File:    tmacro.h
 *
 * Purpose: Define basic common types and macros
 *
 * Author:  Tevin Chen
 *
 * Date:    Jan 08, 2002
 *
 */


#ifndef __TMACRO_H__
#define __TMACRO_H__

#if !defined(__TTYPE_H__)
#include "ttype.h"
#endif




/****** Common helper macros ***********************************************/

// null statement
#define NULL_FUNC()


#if !defined(LONIBBLE)
    #define LONIBBLE(b)         ((UINT8)(b) & 0x0F)
#endif
#if !defined(HINIBBLE)
    #define HINIBBLE(b)         ((UINT8)(((UINT16)(b) >> 4) & 0x0F))
#endif

#if !defined(LOBYTE)
    #define LOBYTE(w)           ((UINT8)(w))
#endif
#if !defined(HIBYTE)
    #define HIBYTE(w)           ((UINT8)(((UINT16)(w) >> 8) & 0xFF))
#endif

#if !defined(LOWORD)
    #define LOWORD(d)           ((UINT16)(d))
#endif
#if !defined(HIWORD)
    #define HIWORD(d)           ((UINT16)((((UINT32)(d)) >> 16) & 0xFFFF))
#endif


#if !defined(MAKEBYTE)
    #define MAKEBYTE(ln, hn)    ((UINT8)(((UINT8)(ln) & 0x0F) | ((UINT8)(hn) << 4)))
#endif
#if !defined(MAKEWORD)
    #define MAKEWORD(lb, hb)    ((UINT16)(((UINT8)(lb)) | (((UINT16)((UINT8)(hb))) << 8)))
#endif
#if !defined(MAKEDWORD)
    #define MAKEDWORD(lw, hw)   ((UINT32)(((UINT16)(lw)) | (((UINT32)((UINT16)(hw))) << 16)))
#endif


// Bytes Reverse: big endian to little endian convert
#if !defined(REVWORD)
    #define REVWORD(n)          ((((UINT16)(n)) << 8) | ((UINT16)(n) >> 8))
#endif
#if !defined(REVDWORD)
    #define REVDWORD(n)         ((((UINT32)(n)) << 24) |                   \
                                ((((UINT32)(n) & 0x0000ff00UL)) << 8) |    \
                                ((((UINT32)(n) & 0x00ff0000UL)) >> 8) |    \
                                (((UINT32)(n)) >> 24))
#endif

// big endian to little endian convert
#if !defined(HTONS)
    #if defined(__BIG_ENDIAN)
        #define HTONS(n)            (n)
    #else 
        #define HTONS(n)            REVWORD(n)
    #endif 
#endif /* HTONS */

#if !defined(HTONL)
    #if defined(__BIG_ENDIAN)
        #define HTONL(n)            (n)
    #else 
        #define HTONL(n)            REVDWORD(n)
    #endif 
#endif /* HTONL */

#ifndef NTOHS
    #define NTOHS               HTONS
#endif
#ifndef NTOHL
    #define NTOHL               HTONL
#endif

/* map to known network names */
#define ntohs(x)            NTOHS(x)
#define ntohl(x)            NTOHL(x)
#define htons(x)            HTONS(x)
#define htonl(x)            HTONL(x)



#ifndef NOMINMAX

#ifndef max
    #define max(a,b)            (((a) > (b)) ? (a) : (b))
#endif
#ifndef min
    #define min(a,b)            (((a) < (b)) ? (a) : (b))
#endif

#endif // NOMINMAX


/****** Misc macros ********************************************************/

// calculate element # of array
#define ARRAY_SIZE(array)   (sizeof(array) / sizeof(array[0]))




#endif /* __TMACRO_H__ */