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