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KVM: x86 emulator: Use a register for ____emulate_2op() destination

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Most x86 two operand instructions allow the destination to be a memory operand,
but IMUL (for example) requires that the destination be a register.  Change
____emulate_2op() to take a register for both source and destination so we
can invoke IMUL.

Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2010-08-16 17:50:56 +03:00
parent b3b3d25a12
commit fb2c264105
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/emulate.c
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@ -200,7 +200,7 @@ struct group_dual {
_PRE_EFLAGS("0", "4", "2") \ _PRE_EFLAGS("0", "4", "2") \
_op _suffix " %"_x"3,%1; " \ _op _suffix " %"_x"3,%1; " \
_POST_EFLAGS("0", "4", "2") \ _POST_EFLAGS("0", "4", "2") \
: "=m" (_eflags), "=m" (*(_dsttype*)&(_dst).val),\ : "=m" (_eflags), "+q" (*(_dsttype*)&(_dst).val),\
"=&r" (_tmp) \ "=&r" (_tmp) \
: _y ((_src).val), "i" (EFLAGS_MASK)); \ : _y ((_src).val), "i" (EFLAGS_MASK)); \
} while (0) } while (0)