V850ES/FX3 Software reset?

I have two questions:

  1. Dose V850ES/FX3 serials have Software Reset function? if it has no Software Reset function how can I realize MCU reset using software method? WDT2?
  2. When I using the watch dog(WDT2) to reset the MCU, I found that the reset flag of WDT2 in RESF register was set "1" , but the MCU didn't reset, why? I used the Trace32 to debug.