[RFA] Fix JVMTI/JDWP Exception Handling

[Keith Seitz]

Tom Tromey wrote:

> Oops, what I meant was compiled frames in the sense of a method that
> is written in Java (or JVM bytecode) and compiled using gcj to
> object -- not a JNI native frame, which is probably what the spec is
> talking about.

Whoops. I misread that, sorry. Hmm. I thought one could not run compiled 
AND interpreted together. Perhaps my old age hallucinations are kicking 
in again?

For the most part, I've been treating anything natively compiled as a 
JNI native frame (in the sense that we would treat them similarly). As a 
result, JVMTI and JDWP won't do a whole lot with anything native.

I believe Kyle has already run into one instance where the compiled vs 
bytecode vs JNI distinction has been forgotten, and gij crashes...

Is it even possible to implement much of JVMTI in object code without 
compiler support?

Keith