Instruction tracing in data processing systems

A tracing circuit 8 within an apparatus for data processing 2 generates trace data including instruction trace words encoding trace events W, E, N representing program instruction execution. The instruction trace words have a predetermined length and each represent a sequence of trace events corresp...

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Bibliographic Details
Main Author ANDREW BROOKFIELD SWAINE
Format Patent
LanguageEnglish
Published 07.09.2005
Edition7
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
PHYSICS
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:A tracing circuit 8 within an apparatus for data processing 2 generates trace data including instruction trace words encoding trace events W, E, N representing program instruction execution. The instruction trace words have a predetermined length and each represent a sequence of trace events corresponding to a combination of execution of one or more program instructions combined with one or more trace events that are other than execution of a program instruction word. Particular examples are a sequence of executed program instructions terminated by a program instruction that fails its condition codes or a sequence of wait processing cycles terminated by a program instruction that executes.
Bibliography:Application Number: GB20020013149