Robustified address calculations on A64.

src/a64/simulator-a64.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 311 matching lines @@
   template <typename T>
   void set_pc(T new_pc) {
     ASSERT(sizeof(T) == sizeof(pc_));
     memcpy(&pc_, &new_pc, sizeof(T));
     pc_modified_ = true;
   }
   Instruction* pc() { return pc_; }
 
   void increment_pc() {
     if (!pc_modified_) {
-      pc_ = pc_->NextInstruction();
+      pc_ = pc_->following();
     }
 
     pc_modified_ = false;
   }
 
   virtual void Decode(Instruction* instr) {
     decoder_->Decode(instr);
   }
 
   void ExecuteInstruction() {
@@ skipping 564 matching lines @@
   static void UnregisterCTryCatch() {
     Simulator::current(Isolate::Current())->PopAddress();
   }
 };
 
 #endif  // !defined(USE_SIMULATOR)
 
 } }  // namespace v8::internal
 
 #endif  // V8_A64_SIMULATOR_A64_H_