Re: How to insert instrcutions at the beginning and/or at the end of each basic block?

  I should recommend to read the AOSD.07 paper about common bytecode
transformations with ASM, linked from the ASM project web page.

  regards,
  Eugene


On Wed, Jul 6, 2011 at 11:32 AM, Leo Romanoff <[email protected]> wrote:
>
> Hi,
>
> I'd like to instrument my java classes and insert certain sequences of
> instructions at the beginning and/or at the end of each basic block
> (specifically, these instructions are supposed to call a static method of
> predefined class).
>
> How this can be done?
>
> Do I need to use classes from the org.objectweb.asm.tree.analysis for it? I
> undrestand how I can obtain frames using something like:
> Analyzer a = new Analyzer(new BasicInterpreter());
> ...
> a.analyze(owner, mn);
> Frame[] frames = a.getFrames();
>
> But how do I get from frames to instructuions contained in this basic block,
> so that I can insert new ones?
>
> May be there are some existing examples for this kind of instrumentation
> already?
>
> Thanks for any help,
>  Leo
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>
>
>
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