Eduardo Melione Abreu
melione at cos.ufrj.br
Fri May 21 14:14:02 PDT 2004
I'm working on trace's output with MOREJIT option and I would like to
print some values of stack and local variables array. Is there some
function that returns this? In practice, I would like to see the value
used from array when the instruction aload 0 is executed.
On Wed, 7 Jan 2004, Dalibor Topic wrote:
> Hi Eduardo,
> Eduardo Melione Abreu wrote:
> > Thank you!
> > I want to know the values of the most simple bytecodes, whose operate
> > on local integer variables, stack and constants (all about 65
> > bytecodes). However, I have interes to do this patch. What I have do do?
> > How and where do I start? I'm very interested about...
> Actually, there is also the vmdebug option MORE_JIT, that gives you some
> slightly better output:
> @0: aload 0
> @1: iload 1
> @2: iconst 0
> @3: invokevirtual 173
> 000: ALOAD_0
> 000: ALOAD_1
> 000: ALOAD_2
> 000: ALOAD_3
> 001: GETFIELD
> 004: IFNE
> 007: ILOAD_1
> 007: ILOAD_2
> 007: ILOAD_3
> 008: ALOAD_0
> 008: ALOAD_1
> 008: ALOAD_2
> 008: ALOAD_3
> 009: GETFIELD
> 012: ARRAYLENGTH
> with INT_INSTR.
> It would be great if you could take the MORE_JIT output, and extend it
> to resolve the constants, for example, and print its arguments.
> the function is called trace_jcode in kaffe/kaffevm/kaffe.def. Take a
> look at the bytecodes that interest you, and add better humanely
> readable output to their trace_jcode calls. Don't hesitate to ask
> questions. ;)
> dalibor topic
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