WIP

Author: offamitkumar

src/hotspot/cpu/s390/interp_masm_s390.cpp

@@ -172,7 +172,18 @@ void InterpreterMacroAssembler::call_VM_preemptable(Register oop_result, address
     return;
   }
 
-  __ stop("not yet implemented call_VM_preemptable");
+#ifdef ASSERT
+  {
+    NearLabel ok;
+    z_cghsi(in_bytes(JavaThread::preempt_alternate_return_offset()), Z_thread, 0);
+    z_bre(ok);
+    stop("Should not have alternate return address set");
+    bind(ok);
+  }
+#endif // ASSERT
+
+
+  stop("not yet implemented call_VM_preemptable");
 }
 
 void InterpreterMacroAssembler::call_VM_leaf_base(address entry_point) {