Improve how relativized pointers are printed by frame::describe

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    • Type: Enhancement
    • Resolution: Fixed
    • Priority: P4
    • 23
    • Affects Version/s: 22
    • Component/s: hotspot
    • b14

      If a member of the interpreter's fixed frame has a value between -99 to 99 it's value will be printed as a signed integer instead of a hexadecimal value.

      The basic logic behind that seems to be: Members of the fixed frame are pointers and therefore don't hold values [-99..99], but if they do, they are probably relativized values so they should be printed as integers. And they should be interpreted as pointing to a stack index relative to the frame pointer.

      Printing relativized pointers as a stack element index from the frame pointer can be confusing since it doesn't show the actual derelativized pointer value.

      It can also be very confusing if you use a debugger to hex dump the memory were the fixed frame is located, and you see something else than is printed by frame::describe.

      We should improve frame::describe so that it prints the actual derelativized pointer value, regardless if it's on the stack or on the heap.

      We should also somehow show that they are relativized.

            Assignee:
            Fredrik Bredberg
            Reporter:
            Fredrik Bredberg
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              Created:
              Updated:
              Resolved: