82 lines
2.0 KiB
C
82 lines
2.0 KiB
C
/*
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* File : exception.c
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* COPYRIGHT (C) 2008 - 2016, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2010-05-17 swkyer first version
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*/
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#include <rtthread.h>
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#include <rthw.h>
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#include "../common/exception.h"
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#include "../common/mipsregs.h"
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/**
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* @addtogroup Ingenic
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*/
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/*@{*/
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/**
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* exception handle table
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*/
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exception_func_t sys_exception_handlers[33];
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/**
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* setup the exception handle
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*/
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exception_func_t rt_set_except_vector(int n, exception_func_t func)
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{
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exception_func_t old_handler = sys_exception_handlers[n];
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if ((n == 0) || (n > 32) || (!func))
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{
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return 0;
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}
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sys_exception_handlers[n] = func;
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return old_handler;
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}
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void tlb_refill_handler(void)
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{
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rt_kprintf("tlb-miss happens, epc: 0x%08x\n", read_c0_epc());
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rt_hw_cpu_shutdown();
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}
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void cache_error_handler(void)
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{
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rt_kprintf("cache exception happens, epc: 0x%08x\n", read_c0_epc());
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rt_hw_cpu_shutdown();
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}
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static void unhandled_exception_handle(pt_regs_t *regs)
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{
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rt_kprintf("exception happens, epc: 0x%08x\n", regs->cp0_epc);
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}
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void install_default_execpt_handle(void)
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{
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rt_int32_t i;
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for (i=0; i<33; i++)
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sys_exception_handlers[i] = (exception_func_t)unhandled_exception_handle;
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}
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/*@}*/
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