A processor includes a coprocessor interface unit that couples a coprocessor that executes instructions in-program order to an execution unit that executes instructions out-of-program order. The coprocessor interface unit includes a coprocessor store data queue. If data stored in a register of the coprocessor...http://www.google.de/patents/US7647475?utm_source=gb-gplus-sharePatent US7647475 - System for synchronizing an in-order co-processor with an out-of-order processor using a co-processor interface store data queue
