Apparatus and method for trace stream identification of a...

Details Apparatus and method for trace stream identification of a... Apparatus and method for trace stream identification of a...

2003-12-05

2008-09-23

Wilson, Yolanda L (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S030000, C712S227000, C717S128000

Reexamination Certificate

active

07428666

ABSTRACT:
When an INTERRUPT SERVICE ROUTINE (SECONDARY) CODE FLUSH signal is generated in a target processor during a test procedure, a sync marker is generated in a program counter trace stream. The sync marker includes a plurality of packets, the packets identifying that the sync marker is has been generated as a result of the INTERRUPT SERVICE ROUTINE CODE FLUSH signal. The interrupt service routine code flush sync marker identifies the absolute program counter address at the time of the generation of the INTERRUPT SERVICE ROUTINE CODE FLUSH signal and relates the INTERRUPT SERVICE ROUTINE CODE FLUSH signal sync marker to a timing trace stream. The INTERRUPT SERVICE ROUTINE CODE FLUSH signal is generated at the transition between the interrupt service routine (secondary) code instructions being removed from the pipeline flattener and the program (primary) code instructions being removed from the pipeline flattener.

REFERENCES:
patent: 6253338 (2001-06-01), Smolders
patent: 6311325 (2001-10-01), Levine et al.
patent: 6510507 (2003-01-01), Matt et al.
patent: 6694427 (2004-02-01), Mericas et al.
patent: 6728949 (2004-04-01), Bryant et al.
patent: 7047521 (2006-05-01), Bunnell
patent: 2004/0064385 (2004-04-01), Tamaki

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