break in HAL?

Hi everyone ,I meet the same problem,has anyone any way to solve it!

I enter the debug as hardware,and it stop at alt_irq_entry.

here is the code:could anyone help me?

0x00040194 <alt_irq_entry+116>: break 0

0x00040198 <alt_irq_entry+120>: ldw r5,68(sp)

0x0004019c <alt_irq_entry+124>: ldw ea,72(sp)

0x000401a0 <alt_irq_entry+128>: ldw ra,0(sp)

0x000401a4 <alt_irq_entry+132>: wrctl estatus,r5

0x000401a8 <alt_irq_entry+136>: ldw at,8(sp)

0x000401ac <alt_irq_entry+140>: ldw r2,12(sp)

0x000401b0 <alt_irq_entry+144>: ldw r3,16(sp)

0x000401b4 <alt_irq_entry+148>: ldw r4,20(sp)

0x000401b8 <alt_irq_entry+152>: ldw r5,24(sp)