Enable DWARF2 exceptions on Alpha?

[Andrew Haley]

Jeff Sturm writes:
 > 
 > 
 > On Mon, 21 May 2001, Andrew Haley wrote:
 > > 
 > >         * configure.host: Use sjlj-exceptions for Alpha.
 > > 
 > > Which should it be, really?  I'm trying to bring both into line.
 > 
 > I honestly don't know with the new EH.  Previously the alpha port needed
 > sjlj-exceptions for signal handling.  I guess that the new implementation
 > allows `throw' within a handler without special tricks?

Yes, it does.  I haven't tried.  I need to find an Alpha that I can
use for testing.

 > >From a quick glance, it looks like the setting in configure.host no longer
 > does anything useful.  Sjlj must be enabled or disabled when gcc is
 > configured, and cannot be arbitrarily changed in libgcj, right?

Yes, that's true.

 > Since the merge I haven't been able to test either alpha-linux or
 > sparc-solaris since both are failing miserably.  I haven't looked
 > carefully at the new EH.  I don't know if anyone is looking at these, and
 > I have neither the time nor expertise to do much about it right now :(

Okay, I understand.  What I was trying to determine was whether there
was some special reason that the branch and the trunk were different.

If you look at the PPC changes I just checked in, you'll see a new
file called include/dwarf2-signal.h.  I believe that if sjlj is turned
off and this file is used to catch signals the Alpha should work in
exactly the same way as the PPC.

Andrew.