On Wed, 7 Feb 2001, Alan Cox wrote: > Its an interesting question whether it belongs in the kernel or libc. > Discuss ;) Hmm, emulating a missing part of CPU seems more natural in the kernel mode. It's completely transparent -- no difference to userland software whether there is a real part or an emulator. The libc approach has the advantage of being unprivileged -- a fault in an emulator cannot itself bring a system down. It's non-transparent, though -- it may give interesting effects when debugging. > Also we missed a trick on the x86 and I want to fix that one day, which is > to have an __fpu ELF segment so if you boot an FPU emu kernel on an fpu > box you regain 47K A good idea, even though hardly anyone needs the emulator for i386 these days. ;-) -- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available +
