Commit 3261107e authored by Bruce Rogers's avatar Bruce Rogers Committed by Gleb Natapov
Browse files

KVM: x86 emulator: emulate RETF imm 



Opcode CA

This gets used by a DOS based NetWare guest.

Signed-off-by: default avatarBruce Rogers <brogers@suse.com>
Reviewed-by: default avatarGleb Natapov <gleb@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 272b98c6

arch/x86/kvm/emulate.c

+13 −1
Original line number Diff line number Diff line
@@ -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 */