On Fri, 8 Sep 2006, David Edelsohn wrote:
> Soft-float implementation of long double support is in development
> but not complete. Long double requires double precision registers, so it
> only will work with e500 double. It also requires floating point
> multiply-subtract (fmsub), which e500 double does not appear to
> implement. This is why long double has been disabled for e500 by testing
> for __NO_FPRS__. The soft-float support requires emulating fmsub, so it
> might work on e500 as well at that point.
>
> http://gcc.gnu.org/ml/gcc-patches/2006-03/msg01298.html is the
> patch that disabled this. This was in response to PR 26607 reported by
> you.
Perhaps as an interim fix it should be more thoroughly disabled. In
particular, the ldblspecs
ldblspecs: specs
sed -e '/cc1_options/{ n; s/$$/ %{!msoft-float:-mlong-double-128}/; }'
< specs > $@
are what causes the problematic references in the shared libgcc; E500
targets may need different specs until the long double support is fixed.
--
Joseph S. Myers
[EMAIL PROTECTED]
