> Date: Wed, 30 Oct 2024 04:30:44 +0900 > From: Izumi Tsutsui <tsut...@ceres.dti.ne.jp> > > riastradh@ wrote: > > > Is this configuration > > relevant for real-world hardware or is it more of a `for fun' option? > > The only use case is to run NetBSD/mac68k on XC68LC040 machines. > > It looks he "options FPU_EMULATE" for m68k doesn't handle > XC68LC040 errata properly so most FP programs randomly dumps core > on it (though FPU_EMULATE works on rare MC68LC040). > n> In the real world only several Machintosh machines (LC630 etc.) > were shipped with XC68LC040 and users of such machines want > softfloat, but most such geek users just replaced LC040 with 68040. > > I have LC630 with MC68LC040 and HP9000/382 with (replaced) XC68LC040 > to debug FPU_EMULATE on LC040, but it has been in my deep todo list..
Cool, thanks for the background! > > Maybe we should have an m68k MKSOFTFLOAT=yes autobuild? > > We can do it, but IIRC there were several discussions if we provide > softfloat m68k binaries maybe we should define a differnt MACHINE_ARCH. Yes, I think we need a new MACHINE_ARCH for that, maybe m68ksf. But maybe effort is better spent on making FPU_EMULATE work than on dealing with a new ABI.
