Ahead of time compiler solutions

Wed Nov 13 12:51:00 GMT 2002

>>>>> "Philippe" == Philippe Laporte <plaporte@wgate.com> writes:

Philippe> I'm just very curious here, what's so special about Kaffe
Philippe> that it can interface with GCJ, but the SUN JVM can't?
I thought they changed kaffe to let it interoperate.
I don't know, though, since I never looked into it.
In any case, the special thing is access to the source.
Philippe> What is the one JIT project that is closest to meeting the
Philippe> integration requirements, and what's still missing?
ORP is closest. I think it is license-compatible, though I don't
remember the last time I looked.
Missing bits:
* Change libgcj to allow pluggable jit/interpreter.
 This is pretty easy, probably a couple days.
 Nobody has done it yet since there's no demand.
* Write glue code to let ORP talk to libgcj.
 ORP has some interfaces that make this not too bad.
 I started it; I have about 800 LOC and probably another 2000 to go
 At my current rate it will take about 15 years to finish :-)
* Figure out how to get ORP exceptions and libgcj exceptions to work
 together. No clue how long this will take.
ORP only works on ia32 and ia64 :-(
I can send my integration code to anybody who wants it. Though
honestly it may be easier to start from scratch.
Tom