xil_assert.h

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******************************************************************************/
/*****************************************************************************/
/**
*
* @file xil_assert.h
*
* This file contains assert related functions.
*
* <pre>
* MODIFICATION HISTORY:
*
* Ver   Who    Date   Changes
* ----- ---- -------- -------------------------------------------------------
* 1.00a hbm  07/14/09 First release
* </pre>
*
******************************************************************************/

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

#ifdef __cplusplus
extern "C" {
#endif


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


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

#define XIL_ASSERT_NONE     0
#define XIL_ASSERT_OCCURRED 1

extern unsigned int Xil_AssertStatus;
extern void Xil_Assert(const char *, int);


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

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

#ifndef NDEBUG

/*****************************************************************************/
/**
* This assert macro is to be used for functions that do not return anything
* (void). This in conjunction with the Xil_AssertWait 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 Xil_AssertWait variable is true, in which
*           case no return is made and an infinite loop is entered.
*
* @note     None.
*
******************************************************************************/
#define Xil_AssertVoid(Expression)                \
{                                                  \
    if (Expression) {                              \
        Xil_AssertStatus = XIL_ASSERT_NONE;       \
    } else {                                       \
        Xil_Assert(__FILE__, __LINE__);            \
        Xil_AssertStatus = XIL_ASSERT_OCCURRED;   \
        return;                                    \
    }                                              \
}

/*****************************************************************************/
/**
* This assert macro is to be used for functions that do return a value. This in
* conjunction with the Xil_AssertWait 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 Xil_AssertWait variable is true, in which
* 	    case no return is made and an infinite loop is entered.
*
* @note     None.
*
******************************************************************************/
#define Xil_AssertNonvoid(Expression)             \
{                                                  \
    if (Expression) {                              \
        Xil_AssertStatus = XIL_ASSERT_NONE;       \
    } else {                                       \
        Xil_Assert(__FILE__, __LINE__);            \
        Xil_AssertStatus = XIL_ASSERT_OCCURRED;   \
        return 0;                                  \
    }                                              \
}

/*****************************************************************************/
/**
* Always assert. This assert macro is to be used for functions that do not
* return anything (void). Use for instances where an assert should always
* occur.
*
* @return Returns void unless the Xil_AssertWait variable is true, in which
*	  case no return is made and an infinite loop is entered.
*
* @note   None.
*
******************************************************************************/
#define Xil_AssertVoidAlways()                   \
{                                                  \
   Xil_Assert(__FILE__, __LINE__);                 \
   Xil_AssertStatus = XIL_ASSERT_OCCURRED;        \
   return;                                         \
}

/*****************************************************************************/
/**
* Always assert. This assert macro is to be used for functions that do return
* a value. Use for instances where an assert should always occur.
*
* @return Returns void unless the Xil_AssertWait variable is true, in which
*	  case no return is made and an infinite loop is entered.
*
* @note   None.
*
******************************************************************************/
#define Xil_AssertNonvoidAlways()                \
{                                                  \
   Xil_Assert(__FILE__, __LINE__);                 \
   Xil_AssertStatus = XIL_ASSERT_OCCURRED;        \
   return 0;                                       \
}


#else

#define Xil_AssertVoid(Expression)
#define Xil_AssertVoidAlways()
#define Xil_AssertNonvoid(Expression)
#define Xil_AssertNonvoidAlways()

#endif

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

void Xil_AssertSetCallback(Xil_AssertCallback Routine);

#ifdef __cplusplus
}
#endif

#endif	/* end of protection macro */