Re: HPPA and Squeeze

["John David Anglin" <dave@hiauly1.hia.nrc.ca>]

> > I've pretty much localized the problem.  It's a GCC middle-end bug.
> > The problem is in passing a complex double from a thunk.  The hppa
> > specification says that values larger than 64 bits are passed by
> > reference in the 32-bit runtime.  However, the value is in a pair
> > of registers and not copied to memory.  This doesn't happen in calls
> > from normal functions because the value gets copied to a stack slot.
> 
> I'm slightly confused about "stack slot". Could the "pass by reference"
> refer to the address in the stack?

The reference can refer to a location on the stack (region allocated
for locals).  However, values larger than 64 bits can't be passed in the
argument slots.

Dave
-- 
J. David Anglin                                  dave.anglin@nrc-cnrc.gc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6602)