On 08/18/2009 03:48 PM, Mohammed Gamal wrote:
+
+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));
'pop seg' is still subject to the operand size (I think).
+ kvm_x86_ops->set_segment(ctxt->vcpu,&segment, seg);
You need to call kvm_load_segment_descriptor() so that the segment cache
is also loaded correctly.
Note some of these instructions are not encodable in long mode; need to
check for that instead of emulating the wrong instruction.
@@ -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);
--
error compiling committee.c: too many arguments to function
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