> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Ivan Voras > Sent: Thursday, February 28, 2008 3:30 AM > To: email@example.com > Subject: Re: FreeBSD support this hardware? > > > Robe wrote: > > > And here's the link to the CPU page > http://www.dmp.com.tw/tech/Vortex86SX/ > > > > Can anybody tell me if FreeBSD support this hardware? > > Judging by the "SX" label and the information on the page, no, because > it doesn't have a FPU. >
I'm surprised they claim Linux compatability since I thought Linux required an FPU as well. FreeBSD 4.X supports these with the kernel option MATH_EMULATE or GPL_MATH_EMULATE Later versions of FreeBSD got rid of that option. NetBSD 4 still has MATH_EMULATE but it's buggy. There was a discussion last month on the NetBSD mailing list about whether it would be a good thing to fix it. You could, possibly, recompile FreeBSD (or more likely, picobsd, see "man picobsd" for information) with the -msoft-float option to gcc to build a version that would not require a FPU. But you still need an emulator that would supply the floating point operations. gcc includes (or included) a generic implementation of these functions in dp-bit.c and fp-bit.c. Of course, it would be under the GPL. Or you could get the FreeBSD 4.11 source and dig up the ancient emulator that was under the BSD license and use that. Here's a thread fragment I found that discusses the process with regards to building libgcc http://www.busybox.net/lists/uclibc/2002-May/003404.html Good luck - some things are better off left dead, the non-FPU cpus were one of these things. Ted _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"