1. A system comprising: an abstract machine instruction stream; a virtual machine coprocessor configured to receive an instruction from the abstract machine instruction stream and to generate one or more native machine instructions in response to the received instruction; and a processor coupled to the virtual machine coprocessor and operable to execute the native machine instructions generated by the virtual machine coprocessor, wherein the virtual machine coprocessor is operable to generate one or more native machine instructions to explicitly control the virtual machine coprocessor.