Implementing Fast JVM Interpreters Using Java Itself

Most Java Virtual Machines (JVMs) are themselves written in unsafe languages, making it unduly difficult to build trustworthy and safe JVM platforms. While some progress has been made on removing compilers from the trusted computing base (using certifying compilation), JVM interpreters continue to be built almost exclusively in C/C++. The authors have implemented an alternative approach, in which the JVM interpreter itself is built in Java, and runs atop a host JVM execution environment.