An ultra-fast instruction set simulator

In this paper, we present new techniques which further improve the static compilation-based instruction set architecture (ISA) simulation by the aggressive utilization of the host machine resources. Such utilization is achieved by defining a low-level code-generation interface specialized for ISA simulation, rather than the traditional approaches which use C as a code-generation interface. We are able to perform the simulation at a speed of up to 10 millions of simulated instructions per second (MIPS) on a 270 MHz Ultra-5 workstation. This result is only on average 1.6 times slower than the native execution on the host machine, the fastest to the best of our knowledge.