KVM: x86 emulator: use SrcAcc to simplify stos decoding

Use SrcAcc to simplify stos decoding.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 5205d68..6c1e4d6 100644 (file)
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2235,7 +2235,8 @@ static struct opcode opcode_table[256] = {
        D(ByteOp | SrcSI | DstDI | Mov | String), D(SrcSI | DstDI | Mov | String),
        D(ByteOp | SrcSI | DstDI | String), D(SrcSI | DstDI | String),
        /* 0xA8 - 0xAF */
-       D(DstAcc | SrcImmByte | ByteOp), D(DstAcc | SrcImm), D(ByteOp | DstDI | Mov | String), D(DstDI | Mov | String),
+       D(DstAcc | SrcImmByte | ByteOp), D(DstAcc | SrcImm),
+       D(ByteOp | SrcAcc | DstDI | Mov | String), D(SrcAcc | DstDI | Mov | String),
        D(ByteOp | SrcSI | DstAcc | Mov | String), D(SrcSI | DstAcc | Mov | String),
        D(ByteOp | DstDI | String), D(DstDI | String),
        /* 0xB0 - 0xB7 */
@@ -2996,8 +2997,6 @@ special_insn:
        case 0xa8 ... 0xa9:     /* test ax, imm */
                goto test;
        case 0xaa ... 0xab:     /* stos */
-               c->dst.val = c->regs[VCPU_REGS_RAX];
-               break;
        case 0xac ... 0xad:     /* lods */
                goto mov;
        case 0xae ... 0xaf:     /* scas */