On Mon, Jan 07, 2008 at 09:30:25PM +0900, John Summerfield wrote: > My only F8 system is entirely 64-bit Intel. If used, should those > appear in System.map? I couldn't see any. x86_64 has 64-bit division and modulo insns in hw, so for 64-bit arithmetics x86_64 code doesn't use libgcc helpers. For 128-bit arithmetics it does though... Jakub