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The increasing complexity of systems-on-a-chip requires the continuousdevelopment of electronic design automation tools. Nowadays, the simulation ofsystems-on-a-chip using virtual platforms is common. Virtual platforms enablehardware/software co-design to shorten the time to market, offer insights intothe models, and allow debugging of the simulated hardware. Profiling tools arerequired to improve the usability of virtual platforms. During simulation,these tools capture data that are evaluated afterward. Those data can revealinformation about the simulation itself and the software executed on theplatform. This work presents the tracing tool NISTT that can profileSystemC-TLM-2.0-based virtual platforms. NISTT is implemented in a completelynon-intrusive way. That means no changes in the simulation are needed, thesource code of the simulation is not required, and the traced simulation doesnot need to contain debug symbols. The standardized SystemC applicationprogramming interface guarantees the compatibility of NISTT with othersimulations. The strengths of NISTT are demonstrated in a case study. Here,NISTT is connected to a virtual platform and traces the boot process of Linux.After the simulation, the database created by NISTT is evaluated, and theresults are visualized. Furthermore, the overhead of NISTT is quantified. It isshown that NISTT has only a minor influence on the overall simulationperformance.

NISTT: A Non-Intrusive SystemC-TLM 2.0 Tracing Tool