Hi, Robert, Josh >>> Question 1: >>> Do I need a special glibc for the Xilinx PPC 405???? >>> Does a normal PPC glibc have more "advanced" instructions compiled in >>> that will not work on a Xilinx PPC 405??
Have a look at the eglibc project (embedded glibc) at http://www.eglibc.org I think they support all kind of soft-fp configurations. (i.e. The stuff seems to work fine on my MPC8540 e500 core with soft-fp) >> Make sure you're building glibc with soft-fp, or make sure you have >> CONFIG_MATH_EMULATION enabled in your kernel. The PPC 405 doesn't have >> an FPU. >> >> josh > > CONFIG_MATH_EMULATION fixed it!! > > What are the opinions out there? > Kernel fp or glibc soft-fp?? AFAICT: soft-fp in (e)glibc. They should be faster / hopefully more optimized to your specific cpu. Regards, -- Clemens Koller _______________________________ R&D Imaging Devices Anagramm GmbH Rupert-Mayer-Str. 45/1 81379 Muenchen Germany http://www.anagramm-technology.com Phone: +49-89-741518-50 Fax: +49-89-741518-19 _______________________________________________ Linuxppc-embedded mailing list [email protected] https://ozlabs.org/mailman/listinfo/linuxppc-embedded
