Electrical computers and digital processing systems: processing – Processing control – Branching
Reexamination Certificate
2005-03-08
2005-03-08
Coleman, Eric (Department: 2183)
Electrical computers and digital processing systems: processing
Processing control
Branching
Reexamination Certificate
active
06865667
ABSTRACT:
Embodiments of the present invention relate generally to data processing systems having redirecting circuitry. For example, one embodiment relates to redirecting program flow in a data processing system having a data processor for executing instructions, and circuitry that redirects program flow by identifying an address corresponding to an instruction provided to the data processor for which program execution should be redirected when the instruction is decoded by the data processor. The circuitry also generates a control field having an offset corresponding to the address and using the control field to determine when program flow should be redirected. The circuitry creates a redirected address value by combining a portion of the control field with a predetermined address. The data processor implements redirection of program flow by utilizing the redirected address value. Embodiments also relate to redirecting data accesses and to redirecting program flow while remaining in a same execution context.
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Arends John H.
Moyer William C.
Scott Jeffrey W.
Chiu Joanna G.
Coleman Eric
Freescale Semiconductors, Inc.
King Robert L.
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