K 10
svn:author
V 4
neel
K 8
svn:date
V 27
2014-05-23T05:15:17.585594Z
K 7
svn:log
V 389
Add emulation of the "outsb" instruction. NetBSD guests use this to write to
the UART FIFO.

The emulation is constrained in a number of ways: 64-bit only, doesn't check
for all exception conditions, limited to i/o ports emulated in userspace.

Some of these constraints will be relaxed in followup commits.

Requested by:	grehan
Reviewed by:	tychon (partially and a much earlier version)

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