55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
#include "hal.h"
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#include "uart/uart.h"
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#include "osc/osc.h"
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#include "os_except.h"
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/*
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*********************************************************************************************************
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* Register Exception Handlers
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*
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* Description : This function is called to register general exception handler.
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* The total number of general exception is 16.
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*
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* Arguments : ipc
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*
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* Notes :
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*********************************************************************************************************
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*/
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inline void register_exception_handler(int genneral_except_num, void (*handler)(unsigned int ipc))
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{
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if (genneral_except_num >= 16)
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{
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puts("Non-exist general exception number.\n");
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while (1);
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}
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General_Exception_Handler_Table[genneral_except_num] = handler;
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}
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/*
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*********************************************************************************************************
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* Exception Dispatcher
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*
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* Description : This function is called from exception handler to dispatch different
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* exception handler according to register itype.
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*
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* Arguments : ipc
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*
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* Notes :
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*********************************************************************************************************
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*/
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void OS_CPU_EXCEPTION_Dispatcher(unsigned int ipc)
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{
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/* Interrupt is still disabled at this point */
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/* get all needed system registers' values before re-enable interrupt */
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unsigned int itype = __nds32__mfsr (NDS32_SR_ITYPE);
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unsigned int exception_num;
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void (*pHandler)(unsigned int ipc);
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exception_num = itype & 0xf;
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pHandler = General_Exception_Handler_Table[exception_num];
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pHandler(ipc);
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}
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