Jato

JRuby and Jython are now supported. VM startup speed has improved by 25% and DaCapo benchmark results have improved across the board. The JIT compiler is now able to optimize code before execution. It has limited support for ARM and PPC32 architectures, and significantly improved support for the x86-64 architecture. The VM now also has a classfile verifier.

Jython and JRuby support finally start under Jato. Annotation support has been improved. Many x86 architecture bugs have been squashed.

Performance optimizations were made across the board. Many fixes were made to make Eclipse, Jython, Xalan, and Lusearch work. All DaCapo benchmark suite tests pass now.

This release has a bunch of fixes to make some new programs run under Jato, such as Java Tris, Clojure REPL, and DaCapo. There's also lots of infrastructure work for garbage collection, but it is not functional yet. Fixes were made to the x86-64 port, which is also not fully functional.

This is the first public release of Jato VM. It supports the full JVM instruction set on 32-bit x86 machines running under GNU/Linux but lacks a garbage collector. The following applications are known to run under the VM: System.out.println("hello, world"), Sun Microsystem's Hello World Swing, SciMark2, and not a whole lot more.