Apparatus region-based detection of interference among reordered

Details Apparatus region-based detection of interference among reordered Apparatus region-based detection of interference among reordered

1997-03-25

1999-06-29

Beausoliel, Jr., Robert W.

G06F 1125

Patent

active

059180056

ABSTRACT:
The present invention is an apparatus that maps the memory address space of the computer system into regions, and detects the incorrect execution of a load operation performed earlier than a sequentially preceding (in program order) store operation. The apparatus detects out-of-order load operations, uses a region-based mapping table to keep track of the memory regions accessed by the out-of-order load operations, detects the execution of store operations into regions accessed by out-of-order load operations, and generates a program exception when interference among reordered operations is detected. The invention is applicable to static and dynamic reordering of memory operations.

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patent: 5542075 (1996-07-01), Ebcioglu et al.
patent: 5625835 (1997-04-01), Ebcioglu et al.
patent: 5689712 (1997-11-01), Heisch

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