------- Comment #7 from rob1weld at aol dot com 2009-02-06 22:29 -------
(In reply to comment #6)
> (In reply to comment #4)
> > Do we support TImode arithmetic on many platforms?, ...
> > I am booted in 32-bit mode (and building multilib).
>
> 32bit i386 doesn't support TImode.
>
> TImode soft-fp is disabled in libgcc/config/i386/32/t-fprules-softfp. A change
> in libgcc/conifg.host is needed to correctly filter these functions out on
> your target.
OK.
The file "libgcc/config.host" says this (so I will use it's code):
# This file bears an obvious resemblance to gcc/config.gcc. The cases
# should be kept similar, to ease moving library-specific settings
# from config.gcc to this file.
The (patched) section of "config.gcc" is (now) this:
i[34567]86-*-darwin* | x86_64-*-darwin*)
tmake_file="${tmake_file} i386/t-fprules-softfp
soft-fp/t-softfp"
;;
i[34567]86-*-linux* | x86_64-*-linux*)
tmake_file="${tmake_file} i386/t-fprules-softfp
soft-fp/t-softfp i386/t-linux"
;;
i[34567]86-*-solaris2*)
tmake_file="${tmake_file} i386/t-fprules-softfp
soft-fp/t-softfp"
;;
----------
Hmmm, Let me check something ...
# find /usr/share/src/gcc_trunk/ -name t-fprules-softfp
/usr/share/src/gcc_trunk/libgcc/config/i386/32/t-fprules-softfp
/usr/share/src/gcc_trunk/gcc/config/i386/t-fprules-softfp
/usr/share/src/gcc_trunk/gcc/config/rs6000/t-fprules-softfp
The code is broken (or faILs through) in "libgcc/conifg.host" (since we have no
"64" directory):
# Provide backward binary compatibility for 64bit Linux/x86.
if test "${host_address}" = 64; then
tmake_file="${tmake_file} i386/${host_address}/t-softfp-compat"
fi
----------
I am going to add this to the _end_ of "libgcc/config.host" :
case ${host} in
i[34567]86-*-solaris2*)
if test "${host_address}" = 32; then
tmake_file="${tmake_file} t-softfp
i386/${host_address}/t-fprules-softfp"
else
tmake_file="${tmake_file} i386/t-fprules-softfp
soft-fp/t-softfp"
;;
fi
;;
esac
Building now, seems to build without breaking (thus far).
I will keep you informed and report back with the Testsuite.
Thanks,
Rob
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39048
