Split data-flow scheduling mechanism

摘要

A scheduling scheme and mechanism for a processor system is disclosed. The scheduling scheme provides a reservation station system that includes a control reservation station and a data reservation station. The reservation station system receives an operational entry and for each operational entry it identifies scheduling state information, operand state information, and operand information. The reservation station system stores the scheduling state information and operand information as a control reservation station entry in the control reservation station and stores the operating state information and the operand information as a data reservation station entry in the data reservation station. When control reservation station entries are identified as ready, they are scheduled and issued for execution by a functional unit. The result from the functional unit is distributed within the control reservation station and the data reservation station for subsequent operational entries to use in preparation for scheduling and issuing those entries for execution.