Re: IA64 EH

["Martin v. Loewis" <martin at loewis dot home dot cs dot tu-berlin dot de>]

> On Thu, May 25, 2000 at 05:00:21PM -0400, Mark Mitchell wrote:
> >   We should make a decision as to whether or not we want to use the
> > IA64-style exception handling on other platforms or not.
> 
> No.  The IA-64 bits that were checked in only affect unwinding.
> The format that Intel chose is extremely IA-64 specific, and has
> no real advantage over dwarf2 at all.

I guess a different way to phrase Mark's question is: 

a) Can the new C++ EH ABI
   (http://reality.sgi.com/dehnert_engr/cxx/abi-eh.html) be
   implemented on top of the dwarf2 unwinding information?

b) Is there any value in defining psABI bindings of that scheme on
   other targets? Of course, the biggest possible advantage of such a
   specification would be if other vendors would be willing to also
   support such unwinding mechanisms.

The other bits and pieces of the new C++ ABI are quite
target-independent (as they use the base psABI for each processor); so
potential use of the ABI as a platform standard beyond ia64 really
depends on agreements on exception handling.

Regards,
Martin