Peter Wemm a5de0db8b5 Try harder to give new processes a clean initial fpu state. fpu_cleanstate ... wasn't actually clean, it was saving the xmm registers as left over by the bios. fninit() doesn't clear those. In fpudna(), instead of doing a fninit() and forgetting to load the initial mxcsr, do a full fxrstor(&fpu_cleanstate). Otherwise we hand over whatever random values are left in the xmm registers by the last user. I'm not certain of whether this is excessive paranoia or not, but there was an outright bug in neglecting to set the mxcsr value that caused awk to SIGFPE in some case. Especially for Tim Robbins. :-) i386 probably should do something about the mxcsr setings too. Found by: tjr		2004-06-18 04:01:54 +00:00
..
acpica	Insta-MFi386: ignore disabled cpu apic id's entirely	2004-06-10 21:30:08 +00:00
amd64	Try harder to give new processes a clean initial fpu state. fpu_cleanstate	2004-06-18 04:01:54 +00:00
compile
conf	The majority of FreeBSD/amd64 machines are SMP, so use ADAPTIVE_MUTEXES	2004-06-13 23:03:57 +00:00
ia32	Don't repeat the definition of IDTVEC(). It is in asmacros.h.	2004-05-24 11:28:11 +00:00
include	Do the dreaded s/dev_t/struct cdev */	2004-06-16 09:47:26 +00:00
isa	Move module.h include to the same place as on i386 for diff reduction.	2004-06-03 20:21:30 +00:00
pci	Add missing <sys/module.h> instances which were shadowed by the nested	2004-06-03 05:58:30 +00:00
Makefile