K 10
svn:author
V 6
rlibby
K 8
svn:date
V 27
2017-09-05T19:04:07.931091Z
K 7
svn:log
V 455
gnu binutils: FSGSBASE assembly/disassembly

Enable the in-tree binutils to assemble and disassemble amd64 FSGSBASE
instructions (rdfsbase, rdgsbase, wrfsbase, wrgsbase), used in the base
system since r322763.

This gives one last gasp for in-tree gcc, and provides a small
enhancement for in-tree binutils objdump.

Reviewed by:	dim, kib
Approved by:	markj (mentor)
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D12222

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