diff --git a/gen/asm-x86-32.h b/gen/asm-x86-32.h
index 127e6704..31882afb 100644
--- a/gen/asm-x86-32.h
+++ b/gen/asm-x86-32.h
@@ -277,6 +277,7 @@ namespace AsmParserx8632
         Op_scasX,
         Op_stos,
         Op_stosX,
+        Op_xgetbv,
         Op_xlat,
         N_AsmOpInfo,
         Op_Align,
@@ -522,6 +523,7 @@ namespace AsmParserx8632
         /* Op_scasX     */  {   0,   0,   0,     0, Clb_DI|Clb_Flags },
         /* Op_stos      */  {   mem, 0,   0,     1, Clb_DI },
         /* Op_stosX     */  {   0,   0,   0,     0, Clb_DI },
+        /* Op_xgetbv    */  {   0,   0,   0,     0, Clb_SizeDXAX },
         /* Op_xlat      */  {   mem, 0,   0,     0, Clb_SizeAX }
 
         /// * Op_arpl      */  { D|mr,  reg }, // 16 only -> DstSrc
@@ -1144,6 +1146,7 @@ namespace AsmParserx8632
         { "wrmsr",  Op_0 },
         { "xadd",   Op_UpdUpdF },
         { "xchg",   Op_UpdUpd },
+        { "xgetbv", Op_xgetbv },
         { "xlat",   Op_xlat },
         { "xlatb",  Op_0_AX },
         { "xor",    Op_DstSrcF },
diff --git a/gen/asm-x86-64.h b/gen/asm-x86-64.h
index 6e6edc85..88e1a42b 100644
--- a/gen/asm-x86-64.h
+++ b/gen/asm-x86-64.h
@@ -354,6 +354,7 @@ namespace AsmParserx8664
         Op_scasX,
         Op_stos,
         Op_stosX,
+        Op_xgetbv,
         Op_xlat,
         N_AsmOpInfo,
         Op_Align,
@@ -605,6 +606,7 @@ namespace AsmParserx8664
         /* Op_scasX     */  {   0,   0,   0,     0, Clb_DI|Clb_Flags },
         /* Op_stos      */  {   mem, 0,   0,     1, Clb_DI },
         /* Op_stosX     */  {   0,   0,   0,     0, Clb_DI },
+        /* Op_xgetbv    */  {   0,   0,   0,     0, Clb_SizeRDXRAX },
         /* Op_xlat      */  {   mem, 0,   0,     0, Clb_SizeAX }
 
         /// * Op_arpl      */  { D|mr,  reg }, // 16 only -> DstSrc
@@ -1256,6 +1258,7 @@ namespace AsmParserx8664
         { "wrmsr",  Op_0 },
         { "xadd",   Op_UpdUpdF },
         { "xchg",   Op_UpdUpd },
+        { "xgetbv", Op_xgetbv },
         { "xlat",   Op_xlat },
         { "xlatb",  Op_0_AX },
         { "xor",    Op_DstSrcF },
diff --git a/runtime/druntime b/runtime/druntime
index 205b90fa..a803febd 160000
--- a/runtime/druntime
+++ b/runtime/druntime
@@ -1 +1 @@
-Subproject commit 205b90fa364a7340e20d8f640d46c0058fc34288
+Subproject commit a803febd0808425234421a7ceed5da1882612427