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[libcpu][arm] Add exception install function (#5827)

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Tangyuxin 2022-04-24 01:03:54 +08:00 committed by GitHub
parent 13f8a99e46
commit c80993f713
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1 changed files with 19 additions and 0 deletions
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19
libcpu/arm/cortex-a/trap.c
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@ -19,6 +19,18 @@
extern long list_thread(void);
#endif
static rt_err_t (*rt_exception_hook)(void *context) = RT_NULL;
/**
* This function set the hook, which is invoked on fault exception handling.
*
* @param exception_handle the exception handling hook function.
*/
void rt_hw_exception_install(rt_err_t (*exception_handle)(void *context))
{
rt_exception_hook = exception_handle;
}
/**
* this function will show registers of CPU
*
@ -33,6 +45,13 @@ void rt_hw_show_register(struct rt_hw_exp_stack *regs)
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);
if (rt_exception_hook != RT_NULL)
{
rt_err_t result;
result = rt_exception_hook(regs);
if (result == RT_EOK) return;
}
}
void (*rt_trap_hook)(struct rt_hw_exp_stack *regs, const char *ex, unsigned int exception_type);