diff --git a/src/frontend/A64/decoder/a64.inc b/src/frontend/A64/decoder/a64.inc
index c93ed0df..e25b9f32 100644
--- a/src/frontend/A64/decoder/a64.inc
+++ b/src/frontend/A64/decoder/a64.inc
@@ -865,6 +865,7 @@ INST(RAX1,                   "RAX1",                                      "11001
 INST(SM3PARTW1,              "SM3PARTW1",                                 "11001110011mmmmm110000nnnnnddddd")
 INST(SM3PARTW2,              "SM3PARTW2",                                 "11001110011mmmmm110001nnnnnddddd")
 //INST(SM4EKEY,                "SM4EKEY",                                   "11001110011mmmmm110010nnnnnddddd")
+INST(XAR,                    "XAR",                                       "11001110100mmmmmiiiiiinnnnnddddd")
 
 // Data Processing - FP and SIMD - Cryptographic four register
 INST(EOR3,                   "EOR3",                                      "11001110000mmmmm0aaaaannnnnddddd")
diff --git a/src/frontend/A64/translate/impl/impl.h b/src/frontend/A64/translate/impl/impl.h
index 8710f454..a021d5a5 100644
--- a/src/frontend/A64/translate/impl/impl.h
+++ b/src/frontend/A64/translate/impl/impl.h
@@ -933,6 +933,7 @@ struct TranslatorVisitor final {
     bool SHA512H2(Vec Vm, Vec Vn, Vec Vd);
     bool SHA512SU1(Vec Vm, Vec Vn, Vec Vd);
     bool RAX1(Vec Vm, Vec Vn, Vec Vd);
+    bool XAR(Vec Vm, Imm<6> imm6, Vec Vn, Vec Vd);
     bool SM3PARTW1(Vec Vm, Vec Vn, Vec Vd);
     bool SM3PARTW2(Vec Vm, Vec Vn, Vec Vd);
     bool SM4EKEY(Vec Vm, Vec Vn, Vec Vd);
diff --git a/src/frontend/A64/translate/impl/simd_sha512.cpp b/src/frontend/A64/translate/impl/simd_sha512.cpp
index 955092ee..976f14c4 100644
--- a/src/frontend/A64/translate/impl/simd_sha512.cpp
+++ b/src/frontend/A64/translate/impl/simd_sha512.cpp
@@ -167,6 +167,17 @@ bool TranslatorVisitor::RAX1(Vec Vm, Vec Vn, Vec Vd) {
     return true;
 }
 
+bool TranslatorVisitor::XAR(Vec Vm, Imm<6> imm6, Vec Vn, Vec Vd) {
+    const IR::U128 m = ir.GetQ(Vm);
+    const IR::U128 n = ir.GetQ(Vn);
+
+    const IR::U128 tmp = ir.VectorEor(m, n);
+    const IR::U128 result = ir.VectorRotateRight(64, tmp, imm6.ZeroExtend<u8>());
+
+    ir.SetQ(Vd, result);
+    return true;
+}
+
 bool TranslatorVisitor::SM3PARTW1(Vec Vm, Vec Vn, Vec Vd) {
     const IR::U128 d = ir.GetQ(Vd);
     const IR::U128 m = ir.GetQ(Vm);