/* * File      : trap.c * This file is part of RT-Thread RTOS * COPYRIGHT (C) 2006, RT-Thread Development Team * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * http://openlab.rt-thread.com/license/LICENSE * * Change Logs: * Date           Author       Notes *                Triseel */#include <rtthread.h>#include <rthw.h>#include "AT9200.h"/** * @addtogroup AT91RM9200 *//*@{*/extern struct rt_thread *rt_current_thread;/** * this function will show registers of CPU * * @param regs the registers point */void rt_hw_show_register (struct rt_hw_register *regs){	rt_kprintf("Execption:\n");	rt_kprintf("r00:0x%08x r01:0x%08x r02:0x%08x r03:0x%08x\n", regs->r0, regs->r1, regs->r2, regs->r3);	rt_kprintf("r04:0x%08x r05:0x%08x r06:0x%08x r07:0x%08x\n", regs->r4, regs->r5, regs->r6, regs->r7);	rt_kprintf("r08:0x%08x r09:0x%08x r10:0x%08x\n", regs->r8, regs->r9, regs->r10);	rt_kprintf("fp :0x%08x ip :0x%08x\n", regs->fp, regs->ip);	rt_kprintf("sp :0x%08x lr :0x%08x pc :0x%08x\n", regs->sp, regs->lr, regs->pc);	rt_kprintf("cpsr:0x%08x\n", regs->cpsr);}/** * When ARM7TDMI comes across an instruction which it cannot handle, * it takes the undefined instruction trap. * * @param regs system registers * * @note never invoke this function in application */void rt_hw_trap_udef(struct rt_hw_register *regs){    rt_hw_show_register(regs);    rt_kprintf("undefined instruction\n");	rt_kprintf("thread - %s stack:\n", rt_current_thread->name);	rt_hw_backtrace((rt_uint32_t *)regs->fp, (rt_uint32_t)rt_current_thread->entry);    rt_hw_cpu_shutdown();}/** * The software interrupt instruction (SWI) is used for entering * Supervisor mode, usually to request a particular supervisor * function. * * @param regs system registers * * @note never invoke this function in application */void rt_hw_trap_swi(struct rt_hw_register *regs){    rt_hw_show_register(regs);    rt_kprintf("software interrupt\n");    rt_hw_cpu_shutdown();}/** * An abort indicates that the current memory access cannot be completed, * which occurs during an instruction prefetch. * * @param regs system registers * * @note never invoke this function in application */void rt_hw_trap_pabt(struct rt_hw_register *regs){    rt_hw_show_register(regs);    rt_kprintf("prefetch abort\n");	rt_kprintf("thread - %s stack:\n", rt_current_thread->name);	rt_hw_backtrace((rt_uint32_t *)regs->fp, (rt_uint32_t)rt_current_thread->entry);    rt_hw_cpu_shutdown();}/** * An abort indicates that the current memory access cannot be completed, * which occurs during a data access. * * @param regs system registers * * @note never invoke this function in application */void rt_hw_trap_dabt(struct rt_hw_register *regs){    rt_hw_show_register(regs);    rt_kprintf("data abort\n");	rt_kprintf("thread - %s stack:\n", rt_current_thread->name);	rt_hw_backtrace((rt_uint32_t *)regs->fp, (rt_uint32_t)rt_current_thread->entry);    rt_hw_cpu_shutdown();}/** * Normally, system will never reach here * * @param regs system registers * * @note never invoke this function in application */void rt_hw_trap_resv(struct rt_hw_register *regs){    rt_hw_show_register(regs);    rt_kprintf("not used\n");    rt_hw_cpu_shutdown();}/*************************************************** Implemented : Triseel, Date : 06-03-03** Func Name   : rt_hw_trap_irq** Comments    : this func should be migrated based on diff CPU / Arch, but i think it will be better to fullfil in startup.s** Notes       :** Input  Args :**               none :** Output Args :**               none :** Rtn    Val  :**               none :*************************************************/void rt_hw_trap_irq(){	register rt_uint32_t RegVal;	register rt_isr_handler_t isr_func = RT_NULL;	/* read interrupt vector and id */	isr_func= REG_IN32(AT9200_AIC_IVR, 0);	RegVal	= REG_IN32(AT9200_AIC_ISR, 0);	/* execute isr */	if (isr_func != RT_NULL)	{		isr_func(RegVal);	}	/* indicate interrupt handle end */	REG_OUT32(AT9200_AIC_EOICR, 0, 0);}void rt_hw_trap_fiq(){    rt_kprintf("fast interrupt request\n");}/*@}*/