CPC G06F 11/0751 (2013.01) [G06F 11/0724 (2013.01); G06F 11/0775 (2013.01)] | 22 Claims |
1. A method comprising:
observing, by an internal lockstep monitor of monitoring circuitry, states of internal signals of a master processor of system circuitry and a checker processor of the system circuitry;
comparing, by the internal lockstep monitor, corresponding observed states of the master processor and the checker processor; and
when the corresponding observed states differ:
triggering a master tracer of the monitoring circuitry to output stored master trace data recorded from an output of the master processor; and
triggering a checker tracer of the monitoring circuitry to output stored checker trace data recorded from an output of the checker processor.
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