Method and system for tracking instruction progress within a dat

Details Method and system for tracking instruction progress within a dat Method and system for tracking instruction progress within a dat

1997-07-07

1999-11-16

Treat, William M.

Electrical computers and digital processing systems: processing

Processing control

Specialized instruction processing in support of testing,...

G06F 1100

Patent

active

059875984

ABSTRACT:
A processor and method for tracking instruction execution within a processor are described. The processor includes at least one execution unit that executes instructions and an instruction status indicator that dynamically indicates a status of an instruction during processing. The instruction status indicator has at least a first state to which the instruction status indicator is set in order to indicate that execution of the instruction is stalled. In one embodiment, the processor further includes a reason code indicator associated with the instruction status indicator that specifies an event occurrence that caused the indicated instruction status. In another embodiment, the processor further includes a history buffer that indicates the number of processor cycles that the status indicated by the instruction status indicator has remained unchanged.

REFERENCES:
patent: 5481683 (1996-01-01), Karim
patent: 5594864 (1997-01-01), Trauden
patent: 5659679 (1997-08-01), Alpert et al.
patent: 5675749 (1997-10-01), Hartvigsen et al.
patent: 5751985 (1998-05-01), Shen et al.
patent: 5774685 (1998-06-01), Dudey
patent: 5832511 (1998-11-01), Beck et al.

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