--- a/site-packages/angr/engines/vex/claripy/irop.py
+++ b/site-packages/angr/engines/vex/claripy/irop.py
@@ -119,6 +119,14 @@
         "generic_name": "unpack",
         "to_size": 128,
     },
+    "Iop_SliceV128": {
+        "generic_name": "slice",
+        "to_size": 128,
+    },
+    "Iop_Reverse32sIn64_x2": {
+        "generic_name": "reverse",
+        "to_size": 128,
+    },
 }
 
 for _vec_lanewidth in (8, 16, 32, 64):
@@ -1104,6 +1112,18 @@
         return self._op_concat(args)
 
     @staticmethod
+    def _op_Iop_SliceV128(args):
+        left,right,imm = args
+        assert imm.op == 'BVV'
+        imm = imm.args[0]
+        return claripy.Concat(left,right)[127+imm*8:imm*8]
+
+    @staticmethod
+    def _op_Iop_Reverse32sIn64_x2(args):
+        arg = args[0]
+        return claripy.Concat(arg[95:64],arg[127:96],arg[31:0],arg[63:32])
+
+    @staticmethod
     def _op_Iop_V256to64_0(args):
         return args[0][63:0]
 
@@ -1265,7 +1285,7 @@
     if res is None and extended:
         attrs = op_attrs(op)
         if attrs is None:
-            raise UnsupportedIROpError("Operation not implemented")
+            raise UnsupportedIROpError(f"Operation {op} not implemented")
         res = SimIROp(op, **attrs)
     if res is None:
         raise UnsupportedIROpError("Operation not implemented")
