B::Xref looks very useful now that I have a second look at it. Actually Fletch mentioned that in his first reply, so thanks also to Fletch.
I am able to extract the line numbers of calls to Mod::func(). I'm still wondering whether B::Xref can actually display the original code from that function call. Does anyone know if that's possible?
Right now I still don't know how many lines each function call spans.
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