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US 5,313,613 AGranted
Execution of storage-immediate and storage-storage instructions within cache buffer storage
AssigneeInternational Business Machines Corporation
InventorSteven L. Gregor
Life of this patent
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Abstract
A cache storage system having hardware for in-cache execution of storage-storage and storage-immediate instructions thereby obviating the need for data to be moved from the cache to a separate execution unit and back to cache.
Claims6
A method for accelerated processing of storage related instructions which involve data stored in a cache unit including machine executed steps of:
- processing one of said storage related instructions in order to determine whether any required operands is identified by a cache address in a data array in the cache unit;
- copying each of the required operands located in a cache buffer into a read buffer;
- loading all of the required operands including the required operands in the read buffer into a logic execution unit located within the cache unit without having to transfer the required operands from the cache unit to an execution unit associated with a central processing unit;
- copying a result produced entirely within the cache unit, by the logic execution unit, into a write buffer;
- and
- transferring the result from the write buffer into the data array for storage in the cache unit.
3 more elements
Dependencies are inferred from the claim text.