svn commit: r241744 - projects/bhyve/usr.sbin/bhyve

[Peter Grehan]

Hi Andriy,

> If this code emulates something like mov into %eax on AMDD64, then it should clear
> upper 32-bits of %rax.  Which I think your original code already did, but in a
> less obvious way than Jilles suggested above.
> But I could be very well confused...

  The 0x88/0x89 forms of the MOV instruction don't touch bytes outside 
of the operand size.

later,

Peter.