KVM: x86 emulator: add Src2Imm decoding

Needed for 3-operand IMUL.

Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 95543a6beb53..f456d7e11b3e 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -95,6 +95,7 @@
 #define Src2CL      (1<<29)
 #define Src2ImmByte (2<<29)
 #define Src2One     (3<<29)
+#define Src2Imm     (4<<29)
 #define Src2Mask    (7<<29)
 
 #define X2(x...) x, x
@@ -2844,6 +2845,9 @@ done_prefixes:
                 c->src2.bytes = 1;
                 c->src2.val = 1;
                 break;
+        case Src2Imm:
+                rc = decode_imm(ctxt, &c->src2, imm_size(c), true);
+                break;
         }
 
         if (rc != X86EMUL_CONTINUE)