| 摘要 |
A tracer includes a trace memory that is stored with trace information of the program execution status of a processor; trace information compression unit that compresses the trace information into a predetermined trace format, and stores the resulting compressed information in the trace memory piece by piece cyclically; and an address register that stores the last stored address of the trace memory, analyzes the content of the trace memory in reverse order to a program executed order, searches for a start or end of the trace format, and carries out trace analysis therefrom in the program executed order.
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