[arm64] Avoid signed arithmetic in AddWithCarry.

src/arm64/simulator-arm64.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_ARM64_SIMULATOR_ARM64_H_
 #define V8_ARM64_SIMULATOR_ARM64_H_
 
 #include <stdarg.h>
 #include <vector>
 
@@ skipping 634 matching lines @@
         return false;
     }
   }
 
   bool ConditionFailed(Condition cond) {
     return !ConditionPassed(cond);
   }
 
   template<typename T>
   void AddSubHelper(Instruction* instr, T op2);
-  template<typename T>
-  T AddWithCarry(bool set_flags,
-                 T src1,
-                 T src2,
-                 T carry_in = 0);
+  template <typename T>
+  T AddWithCarry(bool set_flags, T left, T right, int carry_in = 0);
   template<typename T>
   void AddSubWithCarry(Instruction* instr);
   template<typename T>
   void LogicalHelper(Instruction* instr, T op2);
   template<typename T>
   void ConditionalCompareHelper(Instruction* instr, T op2);
   void LoadStoreHelper(Instruction* instr,
                        int64_t offset,
                        AddrMode addrmode);
   void LoadStorePairHelper(Instruction* instr, AddrMode addrmode);
@@ skipping 238 matching lines @@
     Simulator::current(isolate)->PopAddress();
   }
 };
 
 #endif  // !defined(USE_SIMULATOR)
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_ARM64_SIMULATOR_ARM64_H_