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semantics and static analysis

The more I see the structure of what I'm trying to do, the more
"normal" it all becomes.  This is good.  Looks like I'm about to find
a bit more connections to existing approaches.

1. a well-defined operational semantics (relative wrt a single
   abstract point, not the target's concrete machine language) will
   help for "interpretation" based analysis: either full simulation or
   simplified abstract interpretation.

2. this can be used to assist (by verification and test) in building
   locally-specified higher level semantics for sublanguages,
   consistent with the operational semantics.

The idea is to start from the machine, and simply increase the
abstraction level at certain points + provide a set of tools to do
this.



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