RT-Thread_v4.1.1
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210
libcpu/arm/arm926/trap.c
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210
libcpu/arm/arm926/trap.c
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/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2011-01-13 weety modified from mini2440
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* 2015-04-15 ArdaFu Split from AT91SAM9260 BSP
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*/
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#include <rtthread.h>
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#include <rthw.h>
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#define INT_IRQ 0x00
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#define INT_FIQ 0x01
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extern struct rt_thread *rt_current_thread;
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#if defined(RT_USING_FINSH) && defined(MSH_USING_BUILT_IN_COMMANDS)
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extern long list_thread(void);
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#endif
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struct rt_hw_register
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{
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rt_uint32_t r0;
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rt_uint32_t r1;
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rt_uint32_t r2;
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rt_uint32_t r3;
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rt_uint32_t r4;
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rt_uint32_t r5;
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rt_uint32_t r6;
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rt_uint32_t r7;
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rt_uint32_t r8;
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rt_uint32_t r9;
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rt_uint32_t r10;
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rt_uint32_t fp;
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rt_uint32_t ip;
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rt_uint32_t sp;
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rt_uint32_t lr;
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rt_uint32_t pc;
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rt_uint32_t cpsr;
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rt_uint32_t ORIG_r0;
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};
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static rt_err_t (*rt_exception_hook)(void *context) = RT_NULL;
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void rt_hw_exception_install(rt_err_t (*exception_handle)(void *context))
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{
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rt_exception_hook = exception_handle;
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}
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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",
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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",
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regs->r4, regs->r5, regs->r6, regs->r7);
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rt_kprintf("r08:0x%08x r09:0x%08x r10:0x%08x\n",
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regs->r8, regs->r9, regs->r10);
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rt_kprintf("fp :0x%08x ip :0x%08x\n",
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regs->fp, regs->ip);
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rt_kprintf("sp :0x%08x lr :0x%08x pc :0x%08x\n",
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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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if (rt_exception_hook != RT_NULL)
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{
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rt_err_t result;
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result = rt_exception_hook(regs);
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if (result == RT_EOK) return;
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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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#if defined(RT_USING_FINSH) && defined(MSH_USING_BUILT_IN_COMMANDS)
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list_thread();
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#endif
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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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if (rt_exception_hook != RT_NULL)
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{
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rt_err_t result;
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result = rt_exception_hook(regs);
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if (result == RT_EOK) return;
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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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if (rt_exception_hook != RT_NULL)
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{
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rt_err_t result;
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result = rt_exception_hook(regs);
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if (result == RT_EOK) return;
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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_NAME_MAX, rt_current_thread->name);
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#if defined(RT_USING_FINSH) && defined(MSH_USING_BUILT_IN_COMMANDS)
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list_thread();
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#endif
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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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if (rt_exception_hook != RT_NULL)
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{
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rt_err_t result;
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result = rt_exception_hook(regs);
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if (result == RT_EOK) return;
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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_NAME_MAX, rt_current_thread->name);
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#if defined(RT_USING_FINSH) && defined(MSH_USING_BUILT_IN_COMMANDS)
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list_thread();
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#endif
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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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if (rt_exception_hook != RT_NULL)
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{
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rt_err_t result;
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result = rt_exception_hook(regs);
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if (result == RT_EOK) return;
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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 void rt_interrupt_dispatch(rt_uint32_t fiq_irq);
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void rt_hw_trap_irq(void)
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{
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rt_interrupt_dispatch(INT_IRQ);
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}
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void rt_hw_trap_fiq(void)
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{
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rt_interrupt_dispatch(INT_FIQ);
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}
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