Electrical computers and digital processing systems: processing – Processing control – Context preserving (e.g. – context swapping – checkpointing,...
Reexamination Certificate
2005-01-25
2005-01-25
Tsai, Henry W. H. (Department: 2183)
Electrical computers and digital processing systems: processing
Processing control
Context preserving (e.g., context swapping, checkpointing,...
C712S237000
Reexamination Certificate
active
06848044
ABSTRACT:
A method of performing operations to a link stack including the step of performing a Pop operation from the link stack which includes the substeps of storing a first pointer value to the link stack, the first pointer value being the value of a pointer to the link stack before the Pop operation, and storing a first address including a first tag popped from the link stack. The method further includes the step of performing a Push operation to the link stack which includes the substeps of storing a second address including a second tag being Pushed into the link stack and storing a second pointer to the link stack, the second pointer being the value of the pointer to the link stack after the Push operation. The method additionally provides for the recovering of the link stack following an instruction flush which includes the substeps of comparing the first pointer value and the second value, comparing the first tag and the second tag, and replacing an address at the top of the link stack with the first address when the first and second pointers match and the first and second tags match.
REFERENCES:
patent: 5574927 (1996-11-01), Scantlin
patent: 6157999 (2000-12-01), Rossbach et al.
patent: 6526503 (2003-02-01), Sinharoy
patent: 6633974 (2003-10-01), Sinharoy
Eisen Lee Evan
Kahle James Allan
Sinharoy Balaram
Starke William John
Frankeny Richard F.
McBurney Mark E.
Tsai Henry W. H.
Winstead Sechrest & Minick P.C.
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