xbasic_types.h

实用的程序代码

/* $Id: xbasic_types.h,v 1.7 2002/07/25 14:19:57 robertm Exp $ */
/******************************************************************************
*
*       XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"
*       AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND
*       SOLUTIONS FOR XILINX DEVICES.  BY PROVIDING THIS DESIGN, CODE,
*       OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE,
*       APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION
*       THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,
*       AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE
*       FOR YOUR IMPLEMENTATION.  XILINX EXPRESSLY DISCLAIMS ANY
*       WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE
*       IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR
*       REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF
*       INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
*       FOR A PARTICULAR PURPOSE.
*
*       (c) Copyright 2002 Xilinx Inc.
*       All rights reserved.
*
******************************************************************************/
/*****************************************************************************/
/**
*
* @file xbasic_types.h
*
* This file contains basic types for Xilinx software IP.  These types do not
* follow the standard naming convention with respect to using the component
* name in front of each name because they are considered to be primitives.
*
* @note
*
* This file contains items which are architecture dependent.
*
* <pre>
* MODIFICATION HISTORY:
*
* Ver    Who    Date    Changes
* ----- ---- -------- -----------------------------------------------
* 1.00a rmm  12/14/01 First release
* </pre>
*
******************************************************************************/

#ifndef XBASIC_TYPES_H      /* prevent circular inclusions */
#define XBASIC_TYPES_H      /* by using protection macros */

/***************************** Include Files *********************************/


/************************** Constant Definitions *****************************/

/** Xboolean true */
#define XTRUE       1
/** Xboolean false */
#define XFALSE      0

#ifndef NULL
#define NULL 0
#endif
/** Null */
#define XNULL NULL

#define XCOMPONENT_IS_READY     0x11111111  /* component has been initialized */
#define XCOMPONENT_IS_STARTED   0x22222222  /* component has been started */

/* the following constants and declarations are for unit test purposes and are
 * designed to be used in test applications.
 */
#define XTEST_PASSED    0
#define XTEST_FAILED    1

#define XASSERT_NONE     0
#define XASSERT_OCCURRED 1

extern unsigned int XAssertStatus;
extern void XAssert(char *, int);

/**************************** Type Definitions *******************************/

/** @name Primitive types
 * These primitive types are created for transportability.
 * They are dependent upon the target architecture.
 * @{
 */
typedef unsigned char   Xuint8;     /**< unsigned 8-bit */
typedef char            Xint8;      /**< signed 8-bit */
typedef unsigned short  Xuint16;    /**< unsigned 16-bit */
typedef short           Xint16;     /**< signed 16-bit */
typedef unsigned long   Xuint32;    /**< unsigned 32-bit */
typedef long            Xint32;     /**< signed 32-bit */
typedef float           Xfloat32;   /**< 32-bit floating point */
typedef double          Xfloat64;   /**< 64-bit double precision floating point */
typedef unsigned long   Xboolean;   /**< boolean (XTRUE or XFALSE) */

typedef struct
{
    Xuint32 Upper;
    Xuint32 Lower;
} Xuint64;

/*@}*/

/**
 * This data type defines an interrupt handler for a device.
 * The argument points to the instance of the component
 */
typedef void (*XInterruptHandler)(void *InstancePtr);

/**
 * This data type defines a callback to be invoked when an
 * assert occurs. The callback is invoked only when asserts are enabled
 */
typedef void (*XAssertCallback)(char* FilenamePtr, int LineNumber);

/***************** Macros (Inline Functions) Definitions *********************/

/*****************************************************************************/
/**
* Return the most significant half of the 64 bit data type.
*
* @param x is the 64 bit word.
*
* @return
*
* The upper 32 bits of the 64 bit word.
*
* @note
*
* None.
*
******************************************************************************/
#define XUINT64_MSW(x) ((x).Upper)

/*****************************************************************************/
/**
* Return the least significant half of the 64 bit data type.
*
* @param x is the 64 bit word.
*
* @return
*
* The lower 32 bits of the 64 bit word.
*
* @note
*
* None.
*
******************************************************************************/
#define XUINT64_LSW(x) ((x).Lower)


#ifndef NDEBUG

/*****************************************************************************/
/**
* This assert macro is to be used for functions that do not return anything
* (void). This in conjunction with the XWaitInAssert boolean can be used to
* accomodate tests so that asserts which fail allow execution to continue.
*
* @param expression is the expression to evaluate. If it evaluates to false,
*        the assert occurs.
*
* @return
*
* Returns void unless the XWaitInAssert variable is true, in which case
* no return is made and an infinite loop is entered.
*
* @note
*
* None.
*
******************************************************************************/
#define XASSERT_VOID(expression)                   \
{                                                  \
    if (expression)                                \
    {                                              \
        XAssertStatus = XASSERT_NONE;              \
    }                                              \
    else                                           \
    {                                              \
        XAssert(__FILE__, __LINE__);               \
                XAssertStatus = XASSERT_OCCURRED;  \
        return;                                    \
    }                                              \
}

/*****************************************************************************/
/**
* This assert macro is to be used for functions that do return a value. This in
* conjunction with the XWaitInAssert boolean can be used to accomodate tests so
* that asserts which fail allow execution to continue.
*
* @param expression is the expression to evaluate. If it evaluates to false,
*        the assert occurs.
*
* @return
*
* Returns 0 unless the XWaitInAssert variable is true, in which case
* no return is made and an infinite loop is entered.
*
* @note
*
* None.
*
******************************************************************************/
#define XASSERT_NONVOID(expression)                \
{                                                  \
    if (expression)                                \
    {                                              \
        XAssertStatus = XASSERT_NONE;              \
    }                                              \
    else                                           \
    {                                              \
        XAssert(__FILE__, __LINE__);               \
                XAssertStatus = XASSERT_OCCURRED;  \
        return 0;                                  \
    }                                              \
}

#else

#define XASSERT_VOID(expression)
#define XASSERT_NONVOID(expression)

#endif

/************************** Function Prototypes ******************************/

void XAssertSetCallback(XAssertCallback Routine);

#endif          /* end of protection macro */