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31 ******************************************************************************/
32 /****************************************************************************/
35 * @file xil_exception.c
37 * This file contains low-level driver functions for the Cortex R5 exception
41 * MODIFICATION HISTORY:
43 * Ver Who Date Changes
44 * ----- -------- -------- -----------------------------------------------
45 * 5.00 pkp 02/20/14 First release
49 *****************************************************************************/
51 /***************************** Include Files ********************************/
53 #include "xil_types.h"
54 #include "xil_assert.h"
55 #include "xil_exception.h"
56 #include "xpseudo_asm.h"
58 /************************** Constant Definitions ****************************/
60 /**************************** Type Definitions ******************************/
63 Xil_ExceptionHandler Handler;
65 } XExc_VectorTableEntry;
67 /***************** Macros (Inline Functions) Definitions ********************/
69 /************************** Function Prototypes *****************************/
70 static void Xil_ExceptionNullHandler(void *Data);
71 /************************** Variable Definitions *****************************/
73 * Exception vector table to store handlers for each exception vector.
75 XExc_VectorTableEntry XExc_VectorTable[XIL_EXCEPTION_ID_LAST + 1] =
77 {Xil_ExceptionNullHandler, NULL},
78 {Xil_ExceptionNullHandler, NULL},
79 {Xil_ExceptionNullHandler, NULL},
80 {Xil_PrefetchAbortHandler, NULL},
81 {Xil_DataAbortHandler, NULL},
82 {Xil_ExceptionNullHandler, NULL},
83 {Xil_ExceptionNullHandler, NULL},
86 /*****************************************************************************/
88 /****************************************************************************/
91 * This function is a stub Handler that is the default Handler that gets called
92 * if the application has not setup a Handler for a specific exception. The
93 * function interface has to match the interface specified for a Handler even
94 * though none of the arguments are used.
96 * @param Data is unused by this function.
102 *****************************************************************************/
103 static void Xil_ExceptionNullHandler(void *Data)
106 DieLoop: goto DieLoop;
109 /****************************************************************************/
111 * The function is a common API used to initialize exception handlers across all
112 * processors supported. For ARM CortexR5, the exception handlers are being
113 * initialized statically and hence this function does not do anything.
122 *****************************************************************************/
123 void Xil_ExceptionInit(void)
128 /*****************************************************************************/
131 * Makes the connection between the Id of the exception source and the
132 * associated Handler that is to run when the exception is recognized. The
133 * argument provided in this call as the Data is used as the argument
134 * for the Handler when it is called.
136 * @param exception_id contains the ID of the exception source and should
137 * be in the range of 0 to XIL_EXCEPTION_ID_LAST.
138 See xil_exception_l.h for further information.
139 * @param Handler to the Handler for that exception.
140 * @param Data is a reference to Data that will be passed to the
141 * Handler when it gets called.
147 ****************************************************************************/
148 void Xil_ExceptionRegisterHandler(u32 Exception_id,
149 Xil_ExceptionHandler Handler,
152 XExc_VectorTable[Exception_id].Handler = Handler;
153 XExc_VectorTable[Exception_id].Data = Data;
156 /*****************************************************************************/
159 * Removes the Handler for a specific exception Id. The stub Handler is then
160 * registered for this exception Id.
162 * @param exception_id contains the ID of the exception source and should
163 * be in the range of 0 to XIL_EXCEPTION_ID_LAST.
164 * See xil_exception_l.h for further information.
170 ****************************************************************************/
171 void Xil_ExceptionRemoveHandler(u32 Exception_id)
173 Xil_ExceptionRegisterHandler(Exception_id,
174 Xil_ExceptionNullHandler,
177 /*****************************************************************************/
180 * Default Data abort handler which prints a debug message on console if
181 * Debug flag is enabled
189 ****************************************************************************/
191 void Xil_DataAbortHandler(void *CallBackRef){
193 xdbg_printf(XDBG_DEBUG_ERROR, "Data abort \n");
199 /*****************************************************************************/
202 * Default Prefetch abort handler which printsa debug message on console if
203 * Debug flag is enabled
211 ****************************************************************************/
212 void Xil_PrefetchAbortHandler(void *CallBackRef){
214 xdbg_printf(XDBG_DEBUG_ERROR, "Prefetch abort \n");