[libcpu][k210]add description of exception
@@ -230,10 +230,6 @@ uintptr_t handle_irq_m_ext(uintptr_t cause, uintptr_t epc)
/* Restore primitive IRQ threshold */
plic->targets.target[core_id].priority_threshold = int_threshold;
}
- else
- {
- rt_kprintf("unhandled trap!\n");
- }
return epc;
}
@@ -270,8 +266,51 @@ uintptr_t handle_trap(uintptr_t mcause, uintptr_t epc)
rt_hw_interrupt_disable();
tid = rt_thread_self();
+ rt_kprintf("\nException:\n");
+ switch (cause)
+ {
+ case CAUSE_MISALIGNED_FETCH:
+ rt_kprintf("Instruction address misaligned");
+ break;
+ case CAUSE_FAULT_FETCH:
+ rt_kprintf("Instruction access fault");
+ break;
+ case CAUSE_ILLEGAL_INSTRUCTION:
+ rt_kprintf("Illegal instruction");
+ break;
+ case CAUSE_BREAKPOINT:
+ rt_kprintf("Breakpoint");
+ break;
+ case CAUSE_MISALIGNED_LOAD:
+ rt_kprintf("Load address misaligned");
+ break;
+ case CAUSE_FAULT_LOAD:
+ rt_kprintf("Load access fault");
+ break;
+ case CAUSE_MISALIGNED_STORE:
+ rt_kprintf("Store address misaligned");
+ break;
+ case CAUSE_FAULT_STORE:
+ rt_kprintf("Store access fault");
+ break;
+ case CAUSE_USER_ECALL:
+ rt_kprintf("Environment call from U-mode");
+ break;
+ case CAUSE_SUPERVISOR_ECALL:
+ rt_kprintf("Environment call from S-mode");
+ break;
+ case CAUSE_HYPERVISOR_ECALL:
+ rt_kprintf("Environment call from H-mode");
+ break;
+ case CAUSE_MACHINE_ECALL:
+ rt_kprintf("Environment call from M-mode");
+ break;
+ default:
+ rt_kprintf("Uknown exception : %08lX", cause);
+ break;
+ }
rt_kprintf("\n");
- rt_kprintf("unhandled trap, epc => 0x%08x, INT[%d]\n", epc, rt_interrupt_get_nest());
+ rt_kprintf("exception pc => 0x%08x\n", epc);
rt_kprintf("current thread: %.*s\n", RT_NAME_MAX, tid->name);
#ifdef RT_USING_FINSH
list_thread();
