Prologue analysis interface

[Joel Brobecker]

> > I think all we really need to know is how to find the original SP (for
> > use as the CFA).
> 
> Just one comment on this:  the CFA is not necessarily the original SP
> (on s390 we have a constant offset).  We'd have to leave it to platform
> code to actually determine the CFA itself.

If I understand the new approach correctly, we really don't need to know
what the CFA is. All you need to know is where things have been saved.
Things like : r3 is saved at original SP + offset, or r4 saved at r30 +
offset. Right?

-- 
Joel