From fb32b1eda29f2040148b0e172f9cbbd2f07697e4 Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi.kivity@gmail.com>
Date: Sat, 9 Feb 2013 11:31:44 +0200
Subject: [PATCH] KVM: x86 emulator: add support for writing back the source
 operand

Some instructions write back the source operand, not just the destination.
Add support for doing this via the decode flags.

Gleb: add BUG_ON() to prevent source to be memory operand.

Signed-off-by: Avi Kivity <avi.kivity@gmail.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
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