TRACE_REGISTER_SPACING
(A_SCD_TRACE_EVENT_4 + (((n) & 3) * TRACE_REGISTER_SPACING)) : \
(A_SCD_TRACE_EVENT_0 + ((n) * TRACE_REGISTER_SPACING)))
(A_SCD_TRACE_SEQUENCE_4 + (((n) & 3) * TRACE_REGISTER_SPACING)) : \
(A_SCD_TRACE_SEQUENCE_0 + ((n) * TRACE_REGISTER_SPACING)))