Signed-off-by: Mohammed Gamal <[email protected]>
---
arch/x86/kvm/emulate.c | 60 ++++++++++++++++++++++++++++++++++++++++++++---
1 files changed, 56 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 2eb807a..438d423 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -92,19 +92,20 @@ 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, ImplicitOps | Stack,
/* 0x08 - 0x0F */
ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM,
ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM,
- 0, 0, 0, 0,
+ 0, 0, ImplicitOps | Stack, 0,
/* 0x10 - 0x17 */
ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM,
ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM,
- 0, 0, 0, 0,
+ 0, 0, ImplicitOps | Stack, ImplicitOps | Stack,
/* 0x18 - 0x1F */
ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM,
ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM,
- 0, 0, 0, 0,
+ 0, 0, ImplicitOps | Stack, ImplicitOps | Stack,
/* 0x20 - 0x27 */
ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM,
ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM,
@@ -1186,6 +1187,30 @@ 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.val = segment.selector;
+ emulate_push(ctxt);
+}
+
+static int emulate_pop_sreg(struct x86_emulate_ctxt *ctxt,
+ struct x86_emulate_ops *ops, int seg)
+{
+ struct kvm_segment segment;
+ int rc;
+
+ kvm_x86_ops->get_segment(ctxt->vcpu, &segment, seg);
+ rc = emulate_pop(ctxt, ops, &segment.selector, sizeof(uint16_t));
+ kvm_x86_ops->set_segment(ctxt->vcpu, &segment, seg);
+
+ return rc;
+}
+
static inline int emulate_grp1a(struct x86_emulate_ctxt *ctxt,
struct x86_emulate_ops *ops)
{
@@ -1707,18 +1732,45 @@ 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 0x07: /* pop es */
+ rc = emulate_pop_sreg(ctxt, ops, VCPU_SREG_ES);
+ if (rc != 0)
+ goto done;
+ break;
case 0x08 ... 0x0d:
or: /* or */
emulate_2op_SrcV("or", c->src, c->dst, ctxt->eflags);
break;
+ case 0x0e: /* push cs */
+ emulate_push_sreg(ctxt, VCPU_SREG_CS);
+ break;
case 0x10 ... 0x15:
adc: /* adc */
emulate_2op_SrcV("adc", c->src, c->dst, ctxt->eflags);
break;
+ case 0x16: /* push ss */
+ emulate_push_sreg(ctxt, VCPU_SREG_SS);
+ break;
+ case 0x17: /* pop ss */
+ rc = emulate_pop_sreg(ctxt, ops, VCPU_SREG_SS);
+ if (rc != 0)
+ goto done;
+ break;
case 0x18 ... 0x1d:
sbb: /* sbb */
emulate_2op_SrcV("sbb", c->src, c->dst, ctxt->eflags);
break;
+ case 0x1e: /* push ds */
+ emulate_push_sreg(ctxt, VCPU_SREG_DS);
+ break;
+ case 0x1f: /* pop ds */
+ rc = emulate_pop_sreg(ctxt, ops, VCPU_SREG_DS);
+ if (rc != 0)
+ goto done;
+ break;
case 0x20 ... 0x25:
and: /* and */
emulate_2op_SrcV("and", c->src, c->dst, ctxt->eflags);
--
1.6.0.4
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