from ###@###.###

I was working on the ppc port and I came across some suspicious jvmdi
code so I looked at mustang and I see some suspicious jvmti code. Take a look
at TemplateTable::jvmti_post_field_access() here's the suspicious code:

if (has_tos) {
       // save object pointer before call_VM() clobbers it
         __ mov(Otos_i, Lscratch);
       } else {
         // Load top of stack (do not pop the value off the stack);
         __ ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(0), Otos_i);
       }
       __ verify_oop(Otos_i);
     }
     // Otos_i: object pointer or NULL if static
     // Rcache: cache entry pointer
     __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access),
                Otos_i, Rcache);
     if (!is_static && has_tos) {
       __ mov(Lscratch, Otos_i); // restore object pointer


It would appear to be hiding an oop in Lscratch. Hope it doesn't move. :-) It also
isn't clear if it really needs to be pushed on the expression stack so that
a gc will have the correct number of items on the stack.

--
Steve
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