Apparatus and method for shadowing processor information

Details Apparatus and method for shadowing processor information Apparatus and method for shadowing processor information

2005-02-22

2005-02-22

Beausoliel, Robert (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S031000, C714S038110, C714S045000

Reexamination Certificate

active

06859891

ABSTRACT:
An microcomputer is provided including a processor and a debug circuit including a dedicated link which transfers information between the processor and debug circuit to support debugging operations. In one aspect, the processor provides program counter information, which is stored in a memory-mapped register of the debug circuit. The program counter information may be a value of the processor program counter at a writeback stage of a processor pipeline. Also, trace information including message information is transferred in a non-intrusive manner over the dedicated link. In one aspect, the microcomputer is implemented as a single integrated circuit.

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York, Richard et al. “Real Time Debug for System-on-Chip Devices”, Jun., 1999.

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