[PATCH] x86 emulator: Add 'push es' instruction (opcode 0x06)

[Mohammed Gamal]

Signed-off-by: Mohammed Gamal <m.gamal...@gmail.com>
---
 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 2eb807a..7688c0b 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -92,7 +92,7 @@ static u32 opcode_table[256] = {
        /* 0x00 - 0x07 */
        ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM,
        ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM,
-       ByteOp | DstAcc | SrcImm, DstAcc | SrcImm, 0, 0,
+       ByteOp | DstAcc | SrcImm, DstAcc | SrcImm, ImplicitOps | Stack, 0,
        /* 0x08 - 0x0F */
        ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM,
        ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM,
@@ -1186,6 +1186,15 @@ static int emulate_pop(struct x86_emulate_ctxt *ctxt,
        return rc;
 }
 
+static void emulate_push_sreg(struct x86_emulate_ctxt *ctxt, int seg)
+{
+       struct decode_cache *c = &ctxt->decode;
+       struct kvm_segment segment;
+       kvm_x86_ops->get_segment(ctxt->vcpu, &segment, seg);
+       c->src.ptr = (unsigned long *) &segment.selector;
+       emulate_push(ctxt);
+}
+
 static inline int emulate_grp1a(struct x86_emulate_ctxt *ctxt,
                                struct x86_emulate_ops *ops)
 {
@@ -1707,6 +1716,9 @@ special_insn:
              add:              /* add */
                emulate_2op_SrcV("add", c->src, c->dst, ctxt->eflags);
                break;
+       case 0x06:              /* push es */
+               emulate_push_sreg(ctxt, VCPU_SREG_ES);
+               break;
        case 0x08 ... 0x0d:
              or:               /* or */
                emulate_2op_SrcV("or", c->src, c->dst, ctxt->eflags);
-- 
1.6.0.4


--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html