On Mon, Sep 09, 2013 at 09:40:20AM -0600, Bruce Rogers wrote:
> Opcode CA
>
> This gets used by a DOS based NetWare guest.
>
> Signed-off-by: Bruce Rogers <[email protected]>
Reviewed-by: Gleb Natapov <[email protected]>
> ---
> arch/x86/kvm/emulate.c | 14 +++++++++++++-
> 1 files changed, 13 insertions(+), 1 deletions(-)
>
> diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
> index 2bc1e81..ddc3f3d 100644
> --- a/arch/x86/kvm/emulate.c
> +++ b/arch/x86/kvm/emulate.c
> @@ -2025,6 +2025,17 @@ static int em_ret_far(struct x86_emulate_ctxt *ctxt)
> return rc;
> }
>
> +static int em_ret_far_imm(struct x86_emulate_ctxt *ctxt)
> +{
> + int rc;
> +
> + rc = em_ret_far(ctxt);
> + if (rc != X86EMUL_CONTINUE)
> + return rc;
> + rsp_increment(ctxt, ctxt->src.val);
> + return X86EMUL_CONTINUE;
> +}
> +
> static int em_cmpxchg(struct x86_emulate_ctxt *ctxt)
> {
> /* Save real source value, then compare EAX against destination. */
> @@ -3763,7 +3774,8 @@ static const struct opcode opcode_table[256] = {
> G(ByteOp, group11), G(0, group11),
> /* 0xC8 - 0xCF */
> I(Stack | SrcImmU16 | Src2ImmByte, em_enter), I(Stack, em_leave),
> - N, I(ImplicitOps | Stack, em_ret_far),
> + I(ImplicitOps | Stack | SrcImmU16, em_ret_far_imm),
> + I(ImplicitOps | Stack, em_ret_far),
> D(ImplicitOps), DI(SrcImmByte, intn),
> D(ImplicitOps | No64), II(ImplicitOps, em_iret, iret),
> /* 0xD0 - 0xD7 */
> --
> 1.7.7
--
Gleb.
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