| /****************************************************************************** |
| * |
| * Copyright (C) 2009 - 2014 Xilinx, Inc. All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * Use of the Software is limited solely to applications: |
| * (a) running on a Xilinx device, or |
| * (b) that interact with a Xilinx device through a bus or interconnect. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF |
| * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
| * Except as contained in this notice, the name of the Xilinx shall not be used |
| * in advertising or otherwise to promote the sale, use or other dealings in |
| * this Software without prior written authorization from Xilinx. |
| * |
| ******************************************************************************/ |
| /*****************************************************************************/ |
| /** |
| * |
| * @file xil_exception.c |
| * |
| * This file contains implementation of exception related driver functions. |
| * |
| * <pre> |
| * MODIFICATION HISTORY: |
| * |
| * Ver Who Date Changes |
| * ----- ---- -------- ------------------------------------------------------- |
| * 1.00 hbm 07/28/09 Initial release |
| * |
| * </pre> |
| * |
| * @note |
| * |
| * None. |
| * |
| ******************************************************************************/ |
| |
| #include "xil_types.h" |
| #include "xil_exception.h" |
| |
| #include "microblaze_exceptions_g.h" |
| #include "microblaze_interrupts_i.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| extern void microblaze_enable_exceptions(void); |
| extern void microblaze_disable_exceptions(void); |
| extern void microblaze_enable_interrupts(void); |
| extern void microblaze_disable_interrupts(void); |
| |
| /** |
| * Currently HAL is an augmented part of standalone BSP, so the old definition |
| * of MB_ExceptionVectorTableEntry is used here. |
| */ |
| |
| typedef struct { |
| Xil_ExceptionHandler Handler; |
| void *CallBackRef; |
| } MB_ExceptionVectorTableEntry; |
| |
| /*typedef struct { |
| Xil_ExceptionHandler Handler, |
| void *CallBackRef, |
| } MB_InterruptVectorTableEntry, */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| |
| /************************** Variable Definitions *****************************/ |
| extern MB_ExceptionVectorTableEntry MB_ExceptionVectorTable[XIL_EXCEPTION_ID_INT]; |
| extern MB_InterruptVectorTableEntry MB_InterruptVectorTable; |
| |
| /** |
| * |
| * This function is a stub handler that is the default handler that gets called |
| * if the application has not setup a handler for a specific exception. The |
| * function interface has to match the interface specified for a handler even |
| * though none of the arguments are used. |
| * |
| * @param Data is unused by this function. |
| * |
| * @return |
| * |
| * None. |
| * |
| * @note |
| * |
| * None. |
| * |
| *****************************************************************************/ |
| static void Xil_ExceptionNullHandler(void *Data) |
| { |
| (void *) Data; |
| } |
| |
| /****************************************************************************/ |
| /** |
| * |
| * Initialize exception handling for the processor. The exception vector table |
| * is setup with the stub handler for all exceptions. |
| * |
| * @param None. |
| * |
| * @return None. |
| * |
| * @note |
| * |
| * None. |
| * |
| *****************************************************************************/ |
| void Xil_ExceptionInit(void) |
| { |
| /* |
| * there is no need to setup the exception table here |
| */ |
| |
| } |
| |
| /****************************************************************************/ |
| /** |
| * Enable Exceptions. |
| * |
| * @return None. |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| void Xil_ExceptionEnable(void) |
| { |
| #ifdef MICROBLAZE_EXCEPTIONS_ENABLED |
| microblaze_enable_exceptions(); |
| #endif |
| microblaze_enable_interrupts(); |
| } |
| |
| /****************************************************************************/ |
| /** |
| * Disable Exceptions. |
| * |
| * @param None. |
| * |
| * @return None. |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| void Xil_ExceptionDisable(void) |
| { |
| #ifdef MICROBLAZE_EXCEPTIONS_ENABLED |
| microblaze_disable_exceptions(); |
| #endif |
| microblaze_disable_interrupts(); |
| } |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * Makes the connection between the Id of the exception source and the |
| * associated handler that is to run when the exception is recognized. The |
| * argument provided in this call as the DataPtr is used as the argument |
| * for the handler when it is called. |
| * |
| * @param Id contains the ID of the exception source and should |
| * be XIL_EXCEPTION_INT or be in the range of 0 to XIL_EXCEPTION_LAST. |
| * See xil_mach_exception.h for further information. |
| * @param Handler to the handler for that exception. |
| * @param Data is a reference to data that will be passed to the handler |
| * when it gets called. |
| * |
| * @return None. |
| * |
| * @note |
| * |
| * None. |
| * |
| ****************************************************************************/ |
| void Xil_ExceptionRegisterHandler(u32 Id, Xil_ExceptionHandler Handler, |
| void *Data) |
| { |
| if (Id == XIL_EXCEPTION_ID_INT) { |
| MB_InterruptVectorTable.Handler = Handler; |
| MB_InterruptVectorTable.CallBackRef = Data; |
| } |
| else { |
| #ifdef MICROBLAZE_EXCEPTIONS_ENABLED |
| MB_ExceptionVectorTable[Id].Handler = Handler; |
| MB_ExceptionVectorTable[Id].CallBackRef = Data; |
| #endif |
| } |
| } |
| |
| |
| /*****************************************************************************/ |
| /** |
| * |
| * Removes the handler for a specific exception Id. The stub handler is then |
| * registered for this exception Id. |
| * |
| * @param Id contains the ID of the exception source and should |
| * be XIL_EXCEPTION_INT or in the range of 0 to XIL_EXCEPTION_LAST. |
| * See xexception_l.h for further information. |
| * |
| * @return None. |
| * |
| * @note |
| * |
| * None. |
| * |
| ****************************************************************************/ |
| void Xil_ExceptionRemoveHandler(u32 Id) |
| { |
| if (Id == XIL_EXCEPTION_ID_INT) { |
| MB_InterruptVectorTable.Handler = Xil_ExceptionNullHandler; |
| MB_InterruptVectorTable.CallBackRef = NULL; |
| } |
| else { |
| |
| #ifdef MICROBLAZE_EXCEPTIONS_ENABLED |
| MB_ExceptionVectorTable[Id].Handler = |
| Xil_ExceptionNullHandler; |
| MB_ExceptionVectorTable[Id].CallBackRef = NULL; |
| #endif |
| } |
| } |