cpuBreakThumb = true;
void CPUUndefinedException(){  u32 PC = reg[15].I;  bool savedArmState = armState;  CPUSwitchMode(0x1b, true, false);  reg[14].I = PC - (savedArmState ? 4 : 2);  reg[15].I = 0x04;  armState = true;  armIrqEnable = false;  armNextPC = 0x04;  reg[15].I += 4;    cpuBreakThumb = true;}