[Dwarf-Discuss] Register kinds

Michael Eager eager at eagercon.com
Mon Nov 1 11:22:27 PDT 2010


Relph, Richard wrote:

> I appreciate the warning. And I wish we could debug at 'machine level'. But that decision isn't really up for review.
> What areas do you think might be particularly problematic?

Offhand, I can think that there might
be problems in CIE/FDE generation, which
provides info to walk the stack.  If every
call uses a completely new set of IL registers,
then this table can become very large.

I imagine it should be possible to map between
PC addresses and IL addresses, so that the
line table makes some sense.  Non-trivial
translation between IL and machine instructions
will make this difficult.

Some space optimizations will not be useful,
but that may not be a significant concern.

If anything else occurs to me, I'll let you
know.

-- 
Michael Eager	 eager at eagercon.com
1960 Park Blvd., Palo Alto, CA 94306  650-325-8077



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