Hi! ----
Did anyone thought about providing a (trap-based) emualtion for the SPARC64 instruction "fma" (fused multiply-add) ? The current problem is that we would have to compile a binary twice - one time for normal "sparcv9" and one time for "sparcv9+fma" but then do not have a matching entry in the /usr/bin/isalist output that /usr/lib/isaexec can use this to select between both types of binaries. AFAIK there are (at least) two solutions: a) we need some kind of emulation in the kernel for the "fma" instruction (which is slow but it won't hurt in the current scenario of targeting >= SPARC64-VII) b) fix /usr/bin/isalist to identify "fma"-capable machines correctly c) just use the |fma()| function and don't care about performance on platforms with FMA support ---- Bye, Roland -- __ . . __ (o.\ \/ /.o) roland.mainz at nrubsig.org \__\/\/__/ MPEG specialist, C&&JAVA&&Sun&&Unix programmer /O /==\ O\ TEL +49 641 3992797 (;O/ \/ \O;)
