Begins work on ARM64, first assembler test.

runtime/vm/dart_entry.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/dart_entry.h"
 
 #include "vm/class_finalizer.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
 #include "vm/debugger.h"
@@ skipping 40 matching lines @@
       return error.raw();
     }
   }
   // Now Call the invoke stub which will invoke the dart function.
   invokestub entrypoint = reinterpret_cast<invokestub>(
       StubCode::InvokeDartCodeEntryPoint());
   const Code& code = Code::Handle(function.CurrentCode());
   ASSERT(!code.IsNull());
   ASSERT(Isolate::Current()->no_callback_scope_depth() == 0);
 #if defined(USING_SIMULATOR)
+#if defined(ARCH_IS_64_BIT)
+  // TODO(zra): Change to intptr_t so we have only one case.
+    return bit_copy<RawObject*, int64_t>(Simulator::Current()->Call(
+        reinterpret_cast<int64_t>(entrypoint),
+        static_cast<int64_t>(code.EntryPoint()),
+        reinterpret_cast<int64_t>(&arguments_descriptor),
+        reinterpret_cast<int64_t>(&arguments),
+        reinterpret_cast<int64_t>(&context)));
+#else
     return bit_copy<RawObject*, int64_t>(Simulator::Current()->Call(
         reinterpret_cast<int32_t>(entrypoint),
         static_cast<int32_t>(code.EntryPoint()),
         reinterpret_cast<int32_t>(&arguments_descriptor),
         reinterpret_cast<int32_t>(&arguments),
         reinterpret_cast<int32_t>(&context)));
+#endif
 #else
     return entrypoint(code.EntryPoint(),
                       arguments_descriptor,
                       arguments,
                       context);
 #endif
 }
 
 
 RawObject* DartEntry::InvokeClosure(const Array& arguments) {
@@ skipping 435 matching lines @@
   // Get send port class from isolate library.
   const Library& isolate_lib = Library::Handle(Library::IsolateLibrary());
   const Class& recv_port_cls = Class::Handle(
       isolate_lib.LookupClassAllowPrivate(Symbols::_RawReceivePortImpl()));
   // Check for the same class id.
   ASSERT(!recv_port_cls.IsNull());
   return cls.id() == recv_port_cls.id();
 }
 
 }  // namespace dart