172 lines
4.2 KiB
C
172 lines
4.2 KiB
C
/*
|
|
* 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
|
|
* 2006-03-13 Bernard first version
|
|
* 2006-05-27 Bernard add skyeye support
|
|
* 2007-11-19 Yi.Qiu fix rt_hw_trap_irq function
|
|
* 2013-03-29 aozima Modify the interrupt interface implementations.
|
|
*/
|
|
|
|
#include <rtthread.h>
|
|
#include <rthw.h>
|
|
|
|
#include <sep4020.h>
|
|
|
|
/**
|
|
* @addtogroup S3C24X0
|
|
*/
|
|
/*@{*/
|
|
|
|
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_kprintf("not used\n");
|
|
rt_hw_show_register(regs);
|
|
rt_hw_cpu_shutdown();
|
|
}
|
|
|
|
extern struct rt_irq_desc isr_table[];
|
|
|
|
void rt_hw_trap_irq(void)
|
|
{
|
|
unsigned long intstat;
|
|
rt_uint32_t irq = 0;
|
|
rt_isr_handler_t isr_func;
|
|
void *param;
|
|
|
|
/*Get the final intrrupt source*/
|
|
intstat = *(RP)(INTC_IFSR);;
|
|
|
|
/*Shift to get the intrrupt number*/
|
|
while(intstat != 1)
|
|
{
|
|
intstat = intstat >> 1;
|
|
irq++;
|
|
}
|
|
|
|
/* get interrupt service routine */
|
|
isr_func = isr_table[irq].isr_handle;
|
|
param = isr_table[irq].param;
|
|
|
|
/* turn to interrupt service routine */
|
|
isr_func(irq, param);
|
|
|
|
#ifdef RT_USING_INTERRUPT_INFO
|
|
isr_table[irq].counter++;
|
|
#endif /* RT_USING_INTERRUPT_INFO */
|
|
}
|
|
|
|
void rt_hw_trap_fiq(void)
|
|
{
|
|
rt_kprintf("fast interrupt request\n");
|
|
}
|
|
|
|
/*@}*/
|