KVM: x86 emulator: Fix DstAcc decoding.
Set correct operation length. Add RAX (64bit) handling.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 2832a8c..0b70a36 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -1194,9 +1194,9 @@
break;
case DstAcc:
c->dst.type = OP_REG;
- c->dst.bytes = c->op_bytes;
+ c->dst.bytes = (c->d & ByteOp) ? 1 : c->op_bytes;
c->dst.ptr = &c->regs[VCPU_REGS_RAX];
- switch (c->op_bytes) {
+ switch (c->dst.bytes) {
case 1:
c->dst.val = *(u8 *)c->dst.ptr;
break;
@@ -1206,6 +1206,9 @@
case 4:
c->dst.val = *(u32 *)c->dst.ptr;
break;
+ case 8:
+ c->dst.val = *(u64 *)c->dst.ptr;
+ break;
}
c->dst.orig_val = c->dst.val;
break;