protected void stepped() {
		if (swiMode == SwiMode.IGNORE_STEP) {
			swiMode = SwiMode.ACTIVE;
		}
	}
Notify the machine a thread has been stepped a p-code op, so that it may re-enable software
interrupts, if applicable
Ghidra/Framework/Emulation/src/main/java/ghidra/pcode/emu/AbstractPcodeMachine.java