On Mon, Sep 09, 2013 at 07:09:15AM -0600, Bruce Rogers wrote:
> >>> On 9/8/2013 at 07:13 AM, Gleb Natapov <[email protected]> wrote:
> > On Tue, Sep 03, 2013 at 01:42:09PM -0600, Bruce Rogers wrote:
> >> Opcode CA
> >>
> >> This gets used by a DOS based NetWare guest.
> >>
> >> Signed-off-by: Bruce Rogers <[email protected]>
> >> ---
> >> arch/x86/kvm/emulate.c | 23 ++++++++++++++++++++++-
> >> 1 files changed, 22 insertions(+), 1 deletions(-)
> >>
> >> diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
> >> index 2bc1e81..aee238a 100644
> >> --- a/arch/x86/kvm/emulate.c
> >> +++ b/arch/x86/kvm/emulate.c
> >> @@ -2025,6 +2025,26 @@ 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;
> >> + unsigned long cs;
> >> +
> >> + rc = emulate_pop(ctxt, &ctxt->_eip, ctxt->op_bytes);
> >> + if (rc != X86EMUL_CONTINUE)
> >> + return rc;
> >> + if (ctxt->op_bytes == 4)
> >> + ctxt->_eip = (u32)ctxt->_eip;
> >> + rc = emulate_pop(ctxt, &cs, ctxt->op_bytes);
> >> + if (rc != X86EMUL_CONTINUE)
> >> + return rc;
> >> + rc = load_segment_descriptor(ctxt, (u16)cs, VCPU_SREG_CS);
> >> + if (rc != X86EMUL_CONTINUE)
> >> + return rc;
> >> + rsp_increment(ctxt, ctxt->src.val);
> >> + return X86EMUL_CONTINUE;
> >> +}
> >> +
> > Why not:
> >
> > static int em_ret_far_imm(struct x86_emulate_ctxt *ctxt)
> > {
> > int rc;
> > rc = em_ret_far(struct x86_emulate_ctxt *ctxt);
> > if (rc != X86EMUL_CONTINUE)
> > return rc;
> > rsp_increment(ctxt, ctxt->src.val);
> > return X86EMUL_CONTINUE;
> > }
> >
> > --
> > Gleb.
>
> Yes, that does seem better. Ack.
>
Somebody still needs to write a proper patch :) Can you do it please?
--
Gleb.
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