Patent ID: 7590974

Claim:
A data processor integrated circuit comprising: a data processor ( 201 ) generating plural types of trace data including program counter data and at least one additional type of trace data; a trace data collection unit ( 230 ) connected to said data processor and receiving said plural types of trace data; a trace data export unit ( 240 ) connected to said trace data collection unit operable to periodically transmit program counter sync points indicating a current program counter address of the data processor, and upon detection of corruption if a first trace data following detection of corruption is not a program counter sync point, transmitting an indication of the current program counter address in an offset format from the program counter address of a last transmitted program counter sync point followed by trace data in an event offset format indicating a difference between the program counter offset in a current log and a prior log, and if a first trace data following detection of corruption is a program counter sync point, transmitting trace data in said event offset format.