164 lines
3.8 KiB
C
164 lines
3.8 KiB
C
/*
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* File : trap.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://openlab.rt-thread.com/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2006-03-13 Bernard first version
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* 2006-05-27 Bernard add skyeye support
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* 2007-11-19 Yi.Qiu fix rt_hw_trap_irq function
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*/
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#include <rtthread.h>
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#include <rthw.h>
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#include <sep4020.h>
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/**
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* @addtogroup S3C24X0
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*/
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/*@{*/
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extern struct rt_thread *rt_current_thread;
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/**
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* this function will show registers of CPU
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*
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* @param regs the registers point
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*/
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void rt_hw_show_register (struct rt_hw_register *regs)
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{
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rt_kprintf("Execption:\n");
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rt_kprintf("r00:0x%08x r01:0x%08x r02:0x%08x r03:0x%08x\n", regs->r0, regs->r1, regs->r2, regs->r3);
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rt_kprintf("r04:0x%08x r05:0x%08x r06:0x%08x r07:0x%08x\n", regs->r4, regs->r5, regs->r6, regs->r7);
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rt_kprintf("r08:0x%08x r09:0x%08x r10:0x%08x\n", regs->r8, regs->r9, regs->r10);
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rt_kprintf("fp :0x%08x ip :0x%08x\n", regs->fp, regs->ip);
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rt_kprintf("sp :0x%08x lr :0x%08x pc :0x%08x\n", regs->sp, regs->lr, regs->pc);
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rt_kprintf("cpsr:0x%08x\n", regs->cpsr);
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}
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/**
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* When ARM7TDMI comes across an instruction which it cannot handle,
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* it takes the undefined instruction trap.
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*
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* @param regs system registers
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*
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* @note never invoke this function in application
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*/
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void rt_hw_trap_udef(struct rt_hw_register *regs)
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{
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rt_hw_show_register(regs);
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rt_kprintf("undefined instruction\n");
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rt_kprintf("thread - %s stack:\n", rt_current_thread->name);
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rt_hw_backtrace((rt_uint32_t *)regs->fp, (rt_uint32_t)rt_current_thread->entry);
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rt_hw_cpu_shutdown();
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}
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/**
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* The software interrupt instruction (SWI) is used for entering
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* Supervisor mode, usually to request a particular supervisor
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* function.
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*
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* @param regs system registers
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*
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* @note never invoke this function in application
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*/
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void rt_hw_trap_swi(struct rt_hw_register *regs)
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{
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rt_hw_show_register(regs);
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rt_kprintf("software interrupt\n");
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rt_hw_cpu_shutdown();
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}
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/**
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* An abort indicates that the current memory access cannot be completed,
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* which occurs during an instruction prefetch.
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*
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* @param regs system registers
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*
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* @note never invoke this function in application
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*/
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void rt_hw_trap_pabt(struct rt_hw_register *regs)
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{
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rt_hw_show_register(regs);
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rt_kprintf("prefetch abort\n");
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rt_kprintf("thread - %s stack:\n", rt_current_thread->name);
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rt_hw_backtrace((rt_uint32_t *)regs->fp, (rt_uint32_t)rt_current_thread->entry);
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rt_hw_cpu_shutdown();
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}
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/**
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* An abort indicates that the current memory access cannot be completed,
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* which occurs during a data access.
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*
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* @param regs system registers
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*
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* @note never invoke this function in application
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*/
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void rt_hw_trap_dabt(struct rt_hw_register *regs)
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{
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rt_hw_show_register(regs);
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rt_kprintf("data abort\n");
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rt_kprintf("thread - %s stack:\n", rt_current_thread->name);
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rt_hw_backtrace((rt_uint32_t *)regs->fp, (rt_uint32_t)rt_current_thread->entry);
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rt_hw_cpu_shutdown();
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}
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/**
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* Normally, system will never reach here
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*
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* @param regs system registers
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*
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* @note never invoke this function in application
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*/
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void rt_hw_trap_resv(struct rt_hw_register *regs)
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{
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rt_kprintf("not used\n");
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rt_hw_show_register(regs);
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rt_hw_cpu_shutdown();
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}
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extern rt_isr_handler_t isr_table[];
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void rt_hw_trap_irq()
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{
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unsigned long intstat;
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rt_uint32_t i = 0;
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rt_isr_handler_t isr_func;
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/*Get the final intrrupt source*/
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intstat = *(RP)(INTC_IFSR);;
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/*Shift to get the intrrupt number*/
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while(intstat != 1)
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{
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intstat = intstat >> 1;
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i++;
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}
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/* get interrupt service routine */
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isr_func = isr_table[i];
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/* turn to interrupt service routine */
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isr_func(i);
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}
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void rt_hw_trap_fiq()
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{
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rt_kprintf("fast interrupt request\n");
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}
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/*@}*/
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