Electrical computers and digital processing systems: processing – Processing control – Context preserving (e.g. – context swapping – checkpointing,...
Reexamination Certificate
2006-10-03
2006-10-03
Ellis, Richard L. (Department: 2183)
Electrical computers and digital processing systems: processing
Processing control
Context preserving (e.g., context swapping, checkpointing,...
C712S244000, C712S217000
Reexamination Certificate
active
07117346
ABSTRACT:
A data processing system having multiple register contexts is described. One embodiment of the present invention uses a user programmable context control register for each of the multiple register contexts to allow for the mapping of portions of an alternate register context into a current register context. The context control register may also be used to provide for the sharing of common stack pointers among multiple register contexts. Therefore, when operating in a current register context, the context control register may be used to access portions of an alternate register context in place of accessing corresponding portions of the current register context.
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Arends John H.
Moyer William C.
Chiu Joanna G.
Ellis Richard L.
Fiegle Ryan
Freescale Semiconductor Inc.
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