First cut at impementing ES6 TypedArrays in V8.

src/bootstrapper.cc

 // Copyright 2012 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 181 matching lines @@
                         Handle<JSFunction> empty_function);
   void InitializeExperimentalGlobal();
   // Installs the contents of the native .js files on the global objects.
   // Used for creating a context from scratch.
   void InstallNativeFunctions();
   void InstallExperimentalNativeFunctions();
   Handle<JSFunction> InstallInternalArray(Handle<JSBuiltinsObject> builtins,
                                           const char* name,
                                           ElementsKind elements_kind);
   bool InstallNatives();
+
+  void InstallTypedArray(const char* name);
   bool InstallExperimentalNatives();
   void InstallBuiltinFunctionIds();
   void InstallJSFunctionResultCaches();
   void InitializeNormalizedMapCaches();
 
   enum ExtensionTraversalState {
     UNVISITED, VISITED, INSTALLED
   };
 
   class ExtensionStates {
@@ skipping 1039 matching lines @@
     // Initialize the random seed slot.
     Handle<ByteArray> zeroed_byte_array(
         factory->NewByteArray(kRandomStateSize));
     native_context()->set_random_seed(*zeroed_byte_array);
     memset(zeroed_byte_array->GetDataStartAddress(), 0, kRandomStateSize);
   }
   return true;
 }
 
 
+void Genesis::InstallTypedArray(const char* name) {
+  Handle<JSObject> global = Handle<JSObject>(native_context()->global_object());
+  InstallFunction(global, name, JS_TYPED_ARRAY_TYPE,
+                  JSTypedArray::kSize, isolate()->initial_object_prototype(),
+                  Builtins::kIllegal, true);
+}
+
+
 void Genesis::InitializeExperimentalGlobal() {
   Handle<JSObject> global = Handle<JSObject>(native_context()->global_object());
 
   // TODO(mstarzinger): Move this into Genesis::InitializeGlobal once we no
   // longer need to live behind flags, so functions get added to the snapshot.
 
   if (FLAG_harmony_symbols) {
     // --- S y m b o l ---
     Handle<JSFunction> symbol_fun =
         InstallFunction(global, "Symbol", JS_VALUE_TYPE, JSValue::kSize,
@@ skipping 20 matching lines @@
     }
   }
 
   if (FLAG_harmony_typed_arrays) {
     {  // -- A r r a y B u f f e r
       InstallFunction(global, "__ArrayBuffer", JS_ARRAY_BUFFER_TYPE,
                       JSArrayBuffer::kSize,
                       isolate()->initial_object_prototype(),
                       Builtins::kIllegal, true);
     }
+    {
+      // -- T y p e d A r r a y s
+      InstallTypedArray("__Int8Array");
+      InstallTypedArray("__Uint8Array");
+      InstallTypedArray("__Int16Array");
+      InstallTypedArray("__Uint16Array");
+      InstallTypedArray("__Int32Array");
+      InstallTypedArray("__Uint32Array");
+      InstallTypedArray("__Float32Array");
+      InstallTypedArray("__Float64Array");
+    }
   }
 
   if (FLAG_harmony_generators) {
     // Create generator meta-objects and install them on the builtins object.
     Handle<JSObject> builtins(native_context()->builtins());
     Handle<JSObject> generator_object_prototype =
         factory()->NewJSObject(isolate()->object_function(), TENURED);
     Handle<JSFunction> generator_function_prototype =
         InstallFunction(builtins, "GeneratorFunctionPrototype",
                         JS_FUNCTION_TYPE, JSFunction::kHeaderSize,
@@ skipping 1222 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   ASSERT(!IsActive());
 }
 
 } }  // namespace v8::internal