rt-thread/libcpu/arm/sep4020/trap.c

168 lines
4.0 KiB
C

/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* 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].handler;
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");
}
/*@}*/