[kaffe] Debugging

[Pinaki Mukherjee]

Hi,
 
I am trying to step through the JVM instructions in a simple program. I start stepping through from the beginning and note the following order of instructions getting executed: NEW, DUP, INVOKESPECIAL, ALOAD_n. At this point, I am inside kaffe.def (the debugger just shows the file name and line number here). Now all of a sudden, from inside the ALOAD_n block in kaffe.def, the control jumps to GETSTATIC (instead of going back to runVirtualMachine) and then to JSR_W. I am not understanding it. How can this happen?

Thanks,
Pinaki
 

Pinaki Mukherjee <pinaki2003 at yahoo.com> wrote:
Please, can somenody answer this one...
 
Thanks.


Pinaki Mukherjee <pinaki2003 at yahoo.com> wrote:
Hi,
 
I modified kaffe.def for each instruction and want to test whether they are correct. I want to step through each JVM instruction that is executed in Kaffe. I think this consists of instructions for VM creation, the actual application execution and the VM destruction. How do I do this? 
 
I tried the following:
1. First put a breakpoint in the function runVirtualMachine and then run. After the breakpoint is hit, it will run the instructions for VM creation until function main2 is hit (is that right?). But I do not have a list of the instructions executed for VM creation, so this is difficult.
2. I put a breakpoint in main2 and ran upto this point. After that, I put a breakpoint in runVirtualMachine. I think after this point the VM will execute instructions from the actual application. But when I step inside kaffe.def, the first instruction executed (LDC1) is different from the first instruction in main (ALOAD_0). I don't understand why this is happening.
 
Thank you.
 
Pinaki


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