Add mips64 port.

src/objects.h

 // Copyright 2012 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_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include "src/allocation.h"
 #include "src/assert-scope.h"
 #include "src/builtins.h"
 #include "src/checks.h"
 #include "src/elements-kind.h"
 #include "src/field-index.h"
 #include "src/flags.h"
 #include "src/list.h"
 #include "src/ostreams.h"
 #include "src/property-details.h"
 #include "src/smart-pointers.h"
 #include "src/unicode-inl.h"
 #include "src/zone.h"
 
 #if V8_TARGET_ARCH_ARM
 #include "src/arm/constants-arm.h"  // NOLINT
 #elif V8_TARGET_ARCH_ARM64
 #include "src/arm64/constants-arm64.h"  // NOLINT
 #elif V8_TARGET_ARCH_MIPS
 #include "src/mips/constants-mips.h"  // NOLINT
+#elif V8_TARGET_ARCH_MIPS64
+#include "src/mips64/constants-mips64.h"  // NOLINT
 #endif
 
 
 //
 // Most object types in the V8 JavaScript are described in this file.
 //
 // Inheritance hierarchy:
 // - Object
 //   - Smi          (immediate small integer)
 //   - HeapObject   (superclass for everything allocated in the heap)
@@ skipping 11186 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_