Unwind API for EH

[Jason Merrill]

Jim Dehnert <dehnert at baalbek.engr.sgi.com> writes:

> Personally, I think Cary's interface is marginally cleaner, but not
> significantly.  Given how late this is in the process, and the base
> psABI impact of a change, (and significant non-concensus,) I think it's
> better left as the status quo.  Does anyone have a major problem with
> this?

Nope.
 
> However, the discussion does point out that the LP registers should be
> clearly identified in the ABI as the _only_ scratch registers that must
> be supported in the context.  Right?

Or alternately, specify which scratch registers are reserved for use
by the unwinder itself.  I think that would be my preference.

Jason