SCAUSE_CODE
tf->tf_scause & SCAUSE_CODE,
tf->tf_scause & SCAUSE_CODE);
active_irq = frame->tf_scause & SCAUSE_CODE;
frame->tf_scause & SCAUSE_CODE);
frame->tf_scause & SCAUSE_CODE);
handled = kdb_trap(frame->tf_scause & SCAUSE_CODE, 0, frame);
exception = frame->tf_scause & SCAUSE_CODE;
exception = frame->tf_scause & SCAUSE_CODE;