Electrical computers and digital processing systems: processing – Processing control – Context preserving (e.g. – context swapping – checkpointing,...
Reexamination Certificate
2006-06-20
2006-06-20
Treat, William M. (Department: 2181)
Electrical computers and digital processing systems: processing
Processing control
Context preserving (e.g., context swapping, checkpointing,...
C712S217000
Reexamination Certificate
active
07065635
ABSTRACT:
A technique for handling a condition code modifying instruction in an out-of-order multi-stranded processor involves providing a condition code architectural register file for each strand, providing a condition code working register file, and assigning condition code architectural register file identification information (CARF_ID) and condition code working register file identification information (CWRF_ID) to the condition code modifying instruction. CARF_ID is used to index a location in a condition code rename table to which the CWRF_ID is stored. Thereafter, upon an exception-free execution of the condition code modifying instruction, a result of the execution is copied from the condition code working register file to the condition code architectural register file dependent on CARF_ID, CWRF_ID, register type information, and strand identification information.
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Iacobovici Sorin
Sugumar Rabin A.
Thimmannagari Chandra M. R.
Osha-Liang LLP
Treat William M.
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