diff --git a/src/factory.cc b/src/factory.cc
new file mode 100644
index 0000000..622055c
--- /dev/null
+++ b/src/factory.cc
@@ -0,0 +1,943 @@
+// Copyright 2006-2008 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
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "v8.h"
+
+#include "api.h"
+#include "debug.h"
+#include "execution.h"
+#include "factory.h"
+#include "macro-assembler.h"
+
+namespace v8 {
+namespace internal {
+
+
+Handle<FixedArray> Factory::NewFixedArray(int size, PretenureFlag pretenure) {
+  ASSERT(0 <= size);
+  CALL_HEAP_FUNCTION(Heap::AllocateFixedArray(size, pretenure), FixedArray);
+}
+
+
+Handle<FixedArray> Factory::NewFixedArrayWithHoles(int size) {
+  ASSERT(0 <= size);
+  CALL_HEAP_FUNCTION(Heap::AllocateFixedArrayWithHoles(size), FixedArray);
+}
+
+
+Handle<StringDictionary> Factory::NewStringDictionary(int at_least_space_for) {
+  ASSERT(0 <= at_least_space_for);
+  CALL_HEAP_FUNCTION(StringDictionary::Allocate(at_least_space_for),
+                     StringDictionary);
+}
+
+
+Handle<NumberDictionary> Factory::NewNumberDictionary(int at_least_space_for) {
+  ASSERT(0 <= at_least_space_for);
+  CALL_HEAP_FUNCTION(NumberDictionary::Allocate(at_least_space_for),
+                     NumberDictionary);
+}
+
+
+Handle<DescriptorArray> Factory::NewDescriptorArray(int number_of_descriptors) {
+  ASSERT(0 <= number_of_descriptors);
+  CALL_HEAP_FUNCTION(DescriptorArray::Allocate(number_of_descriptors),
+                     DescriptorArray);
+}
+
+
+// Symbols are created in the old generation (data space).
+Handle<String> Factory::LookupSymbol(Vector<const char> string) {
+  CALL_HEAP_FUNCTION(Heap::LookupSymbol(string), String);
+}
+
+
+Handle<String> Factory::NewStringFromAscii(Vector<const char> string,
+                                           PretenureFlag pretenure) {
+  CALL_HEAP_FUNCTION(Heap::AllocateStringFromAscii(string, pretenure), String);
+}
+
+Handle<String> Factory::NewStringFromUtf8(Vector<const char> string,
+                                          PretenureFlag pretenure) {
+  CALL_HEAP_FUNCTION(Heap::AllocateStringFromUtf8(string, pretenure), String);
+}
+
+
+Handle<String> Factory::NewStringFromTwoByte(Vector<const uc16> string,
+                                             PretenureFlag pretenure) {
+  CALL_HEAP_FUNCTION(Heap::AllocateStringFromTwoByte(string, pretenure),
+                     String);
+}
+
+
+Handle<String> Factory::NewRawTwoByteString(int length,
+                                            PretenureFlag pretenure) {
+  CALL_HEAP_FUNCTION(Heap::AllocateRawTwoByteString(length, pretenure), String);
+}
+
+
+Handle<String> Factory::NewConsString(Handle<String> first,
+                                      Handle<String> second) {
+  CALL_HEAP_FUNCTION(Heap::AllocateConsString(*first, *second), String);
+}
+
+
+Handle<String> Factory::NewStringSlice(Handle<String> str,
+                                       int begin,
+                                       int end) {
+  CALL_HEAP_FUNCTION(str->Slice(begin, end), String);
+}
+
+
+Handle<String> Factory::NewExternalStringFromAscii(
+    ExternalAsciiString::Resource* resource) {
+  CALL_HEAP_FUNCTION(Heap::AllocateExternalStringFromAscii(resource), String);
+}
+
+
+Handle<String> Factory::NewExternalStringFromTwoByte(
+    ExternalTwoByteString::Resource* resource) {
+  CALL_HEAP_FUNCTION(Heap::AllocateExternalStringFromTwoByte(resource), String);
+}
+
+
+Handle<Context> Factory::NewGlobalContext() {
+  CALL_HEAP_FUNCTION(Heap::AllocateGlobalContext(), Context);
+}
+
+
+Handle<Context> Factory::NewFunctionContext(int length,
+                                            Handle<JSFunction> closure) {
+  CALL_HEAP_FUNCTION(Heap::AllocateFunctionContext(length, *closure), Context);
+}
+
+
+Handle<Context> Factory::NewWithContext(Handle<Context> previous,
+                                        Handle<JSObject> extension,
+                                        bool is_catch_context) {
+  CALL_HEAP_FUNCTION(Heap::AllocateWithContext(*previous,
+                                               *extension,
+                                               is_catch_context),
+                     Context);
+}
+
+
+Handle<Struct> Factory::NewStruct(InstanceType type) {
+  CALL_HEAP_FUNCTION(Heap::AllocateStruct(type), Struct);
+}
+
+
+Handle<AccessorInfo> Factory::NewAccessorInfo() {
+  Handle<AccessorInfo> info =
+      Handle<AccessorInfo>::cast(NewStruct(ACCESSOR_INFO_TYPE));
+  info->set_flag(0);  // Must clear the flag, it was initialized as undefined.
+  return info;
+}
+
+
+Handle<Script> Factory::NewScript(Handle<String> source) {
+  // Generate id for this script.
+  int id;
+  if (Heap::last_script_id()->IsUndefined()) {
+    // Script ids start from one.
+    id = 1;
+  } else {
+    // Increment id, wrap when positive smi is exhausted.
+    id = Smi::cast(Heap::last_script_id())->value();
+    id++;
+    if (!Smi::IsValid(id)) {
+      id = 0;
+    }
+  }
+  Heap::SetLastScriptId(Smi::FromInt(id));
+
+  // Create and initialize script object.
+  Handle<Proxy> wrapper = Factory::NewProxy(0, TENURED);
+  Handle<Script> script = Handle<Script>::cast(NewStruct(SCRIPT_TYPE));
+  script->set_source(*source);
+  script->set_name(Heap::undefined_value());
+  script->set_id(Heap::last_script_id());
+  script->set_line_offset(Smi::FromInt(0));
+  script->set_column_offset(Smi::FromInt(0));
+  script->set_data(Heap::undefined_value());
+  script->set_context_data(Heap::undefined_value());
+  script->set_type(Smi::FromInt(Script::TYPE_NORMAL));
+  script->set_compilation_type(Smi::FromInt(Script::COMPILATION_TYPE_HOST));
+  script->set_wrapper(*wrapper);
+  script->set_line_ends(Heap::undefined_value());
+  script->set_eval_from_function(Heap::undefined_value());
+  script->set_eval_from_instructions_offset(Smi::FromInt(0));
+
+  return script;
+}
+
+
+Handle<Proxy> Factory::NewProxy(Address addr, PretenureFlag pretenure) {
+  CALL_HEAP_FUNCTION(Heap::AllocateProxy(addr, pretenure), Proxy);
+}
+
+
+Handle<Proxy> Factory::NewProxy(const AccessorDescriptor* desc) {
+  return NewProxy((Address) desc, TENURED);
+}
+
+
+Handle<ByteArray> Factory::NewByteArray(int length, PretenureFlag pretenure) {
+  ASSERT(0 <= length);
+  CALL_HEAP_FUNCTION(Heap::AllocateByteArray(length, pretenure), ByteArray);
+}
+
+
+Handle<PixelArray> Factory::NewPixelArray(int length,
+                                          uint8_t* external_pointer,
+                                          PretenureFlag pretenure) {
+  ASSERT(0 <= length);
+  CALL_HEAP_FUNCTION(Heap::AllocatePixelArray(length,
+                                              external_pointer,
+                                              pretenure), PixelArray);
+}
+
+
+Handle<Map> Factory::NewMap(InstanceType type, int instance_size) {
+  CALL_HEAP_FUNCTION(Heap::AllocateMap(type, instance_size), Map);
+}
+
+
+Handle<JSObject> Factory::NewFunctionPrototype(Handle<JSFunction> function) {
+  CALL_HEAP_FUNCTION(Heap::AllocateFunctionPrototype(*function), JSObject);
+}
+
+
+Handle<Map> Factory::CopyMapDropDescriptors(Handle<Map> src) {
+  CALL_HEAP_FUNCTION(src->CopyDropDescriptors(), Map);
+}
+
+
+Handle<Map> Factory::CopyMap(Handle<Map> src,
+                             int extra_inobject_properties) {
+  Handle<Map> copy = CopyMapDropDescriptors(src);
+  // Check that we do not overflow the instance size when adding the
+  // extra inobject properties.
+  int instance_size_delta = extra_inobject_properties * kPointerSize;
+  int max_instance_size_delta =
+      JSObject::kMaxInstanceSize - copy->instance_size();
+  if (instance_size_delta > max_instance_size_delta) {
+    // If the instance size overflows, we allocate as many properties
+    // as we can as inobject properties.
+    instance_size_delta = max_instance_size_delta;
+    extra_inobject_properties = max_instance_size_delta >> kPointerSizeLog2;
+  }
+  // Adjust the map with the extra inobject properties.
+  int inobject_properties =
+      copy->inobject_properties() + extra_inobject_properties;
+  copy->set_inobject_properties(inobject_properties);
+  copy->set_unused_property_fields(inobject_properties);
+  copy->set_instance_size(copy->instance_size() + instance_size_delta);
+  return copy;
+}
+
+Handle<Map> Factory::CopyMapDropTransitions(Handle<Map> src) {
+  CALL_HEAP_FUNCTION(src->CopyDropTransitions(), Map);
+}
+
+
+Handle<FixedArray> Factory::CopyFixedArray(Handle<FixedArray> array) {
+  CALL_HEAP_FUNCTION(array->Copy(), FixedArray);
+}
+
+
+Handle<JSFunction> Factory::BaseNewFunctionFromBoilerplate(
+    Handle<JSFunction> boilerplate,
+    Handle<Map> function_map) {
+  ASSERT(boilerplate->IsBoilerplate());
+  ASSERT(!boilerplate->has_initial_map());
+  ASSERT(!boilerplate->has_prototype());
+  ASSERT(boilerplate->properties() == Heap::empty_fixed_array());
+  ASSERT(boilerplate->elements() == Heap::empty_fixed_array());
+  CALL_HEAP_FUNCTION(Heap::AllocateFunction(*function_map,
+                                            boilerplate->shared(),
+                                            Heap::the_hole_value()),
+                     JSFunction);
+}
+
+
+Handle<JSFunction> Factory::NewFunctionFromBoilerplate(
+    Handle<JSFunction> boilerplate,
+    Handle<Context> context) {
+  Handle<JSFunction> result =
+      BaseNewFunctionFromBoilerplate(boilerplate, Top::function_map());
+  result->set_context(*context);
+  int number_of_literals = boilerplate->NumberOfLiterals();
+  Handle<FixedArray> literals =
+      Factory::NewFixedArray(number_of_literals, TENURED);
+  if (number_of_literals > 0) {
+    // Store the object, regexp and array functions in the literals
+    // array prefix.  These functions will be used when creating
+    // object, regexp and array literals in this function.
+    literals->set(JSFunction::kLiteralGlobalContextIndex,
+                  context->global_context());
+  }
+  result->set_literals(*literals);
+  ASSERT(!result->IsBoilerplate());
+  return result;
+}
+
+
+Handle<Object> Factory::NewNumber(double value,
+                                  PretenureFlag pretenure) {
+  CALL_HEAP_FUNCTION(Heap::NumberFromDouble(value, pretenure), Object);
+}
+
+
+Handle<Object> Factory::NewNumberFromInt(int value) {
+  CALL_HEAP_FUNCTION(Heap::NumberFromInt32(value), Object);
+}
+
+
+Handle<Object> Factory::NewNumberFromUint(uint32_t value) {
+  CALL_HEAP_FUNCTION(Heap::NumberFromUint32(value), Object);
+}
+
+
+Handle<JSObject> Factory::NewNeanderObject() {
+  CALL_HEAP_FUNCTION(Heap::AllocateJSObjectFromMap(Heap::neander_map()),
+                     JSObject);
+}
+
+
+Handle<Object> Factory::NewTypeError(const char* type,
+                                     Vector< Handle<Object> > args) {
+  return NewError("MakeTypeError", type, args);
+}
+
+
+Handle<Object> Factory::NewTypeError(Handle<String> message) {
+  return NewError("$TypeError", message);
+}
+
+
+Handle<Object> Factory::NewRangeError(const char* type,
+                                      Vector< Handle<Object> > args) {
+  return NewError("MakeRangeError", type, args);
+}
+
+
+Handle<Object> Factory::NewRangeError(Handle<String> message) {
+  return NewError("$RangeError", message);
+}
+
+
+Handle<Object> Factory::NewSyntaxError(const char* type, Handle<JSArray> args) {
+  return NewError("MakeSyntaxError", type, args);
+}
+
+
+Handle<Object> Factory::NewSyntaxError(Handle<String> message) {
+  return NewError("$SyntaxError", message);
+}
+
+
+Handle<Object> Factory::NewReferenceError(const char* type,
+                                          Vector< Handle<Object> > args) {
+  return NewError("MakeReferenceError", type, args);
+}
+
+
+Handle<Object> Factory::NewReferenceError(Handle<String> message) {
+  return NewError("$ReferenceError", message);
+}
+
+
+Handle<Object> Factory::NewError(const char* maker, const char* type,
+    Vector< Handle<Object> > args) {
+  v8::HandleScope scope;  // Instantiate a closeable HandleScope for EscapeFrom.
+  Handle<FixedArray> array = Factory::NewFixedArray(args.length());
+  for (int i = 0; i < args.length(); i++) {
+    array->set(i, *args[i]);
+  }
+  Handle<JSArray> object = Factory::NewJSArrayWithElements(array);
+  Handle<Object> result = NewError(maker, type, object);
+  return result.EscapeFrom(&scope);
+}
+
+
+Handle<Object> Factory::NewEvalError(const char* type,
+                                     Vector< Handle<Object> > args) {
+  return NewError("MakeEvalError", type, args);
+}
+
+
+Handle<Object> Factory::NewError(const char* type,
+                                 Vector< Handle<Object> > args) {
+  return NewError("MakeError", type, args);
+}
+
+
+Handle<Object> Factory::NewError(const char* maker,
+                                 const char* type,
+                                 Handle<JSArray> args) {
+  Handle<String> make_str = Factory::LookupAsciiSymbol(maker);
+  Handle<Object> fun_obj(Top::builtins()->GetProperty(*make_str));
+  // If the builtins haven't been properly configured yet this error
+  // constructor may not have been defined.  Bail out.
+  if (!fun_obj->IsJSFunction())
+    return Factory::undefined_value();
+  Handle<JSFunction> fun = Handle<JSFunction>::cast(fun_obj);
+  Handle<Object> type_obj = Factory::LookupAsciiSymbol(type);
+  Object** argv[2] = { type_obj.location(),
+                       Handle<Object>::cast(args).location() };
+
+  // Invoke the JavaScript factory method. If an exception is thrown while
+  // running the factory method, use the exception as the result.
+  bool caught_exception;
+  Handle<Object> result = Execution::TryCall(fun,
+                                             Top::builtins(),
+                                             2,
+                                             argv,
+                                             &caught_exception);
+  return result;
+}
+
+
+Handle<Object> Factory::NewError(Handle<String> message) {
+  return NewError("$Error", message);
+}
+
+
+Handle<Object> Factory::NewError(const char* constructor,
+                                 Handle<String> message) {
+  Handle<String> constr = Factory::LookupAsciiSymbol(constructor);
+  Handle<JSFunction> fun =
+      Handle<JSFunction>(
+          JSFunction::cast(
+              Top::builtins()->GetProperty(*constr)));
+  Object** argv[1] = { Handle<Object>::cast(message).location() };
+
+  // Invoke the JavaScript factory method. If an exception is thrown while
+  // running the factory method, use the exception as the result.
+  bool caught_exception;
+  Handle<Object> result = Execution::TryCall(fun,
+                                             Top::builtins(),
+                                             1,
+                                             argv,
+                                             &caught_exception);
+  return result;
+}
+
+
+Handle<JSFunction> Factory::NewFunction(Handle<String> name,
+                                        InstanceType type,
+                                        int instance_size,
+                                        Handle<Code> code,
+                                        bool force_initial_map) {
+  // Allocate the function
+  Handle<JSFunction> function = NewFunction(name, the_hole_value());
+  function->set_code(*code);
+
+  if (force_initial_map ||
+      type != JS_OBJECT_TYPE ||
+      instance_size != JSObject::kHeaderSize) {
+    Handle<Map> initial_map = NewMap(type, instance_size);
+    Handle<JSObject> prototype = NewFunctionPrototype(function);
+    initial_map->set_prototype(*prototype);
+    function->set_initial_map(*initial_map);
+    initial_map->set_constructor(*function);
+  } else {
+    ASSERT(!function->has_initial_map());
+    ASSERT(!function->has_prototype());
+  }
+
+  return function;
+}
+
+
+Handle<JSFunction> Factory::NewFunctionBoilerplate(Handle<String> name,
+                                                   int number_of_literals,
+                                                   bool contains_array_literal,
+                                                   Handle<Code> code) {
+  Handle<JSFunction> function = NewFunctionBoilerplate(name);
+  function->set_code(*code);
+  int literals_array_size = number_of_literals;
+  // If the function contains object, regexp or array literals,
+  // allocate extra space for a literals array prefix containing the
+  // object, regexp and array constructor functions.
+  if (number_of_literals > 0 || contains_array_literal) {
+    literals_array_size += JSFunction::kLiteralsPrefixSize;
+  }
+  Handle<FixedArray> literals =
+      Factory::NewFixedArray(literals_array_size, TENURED);
+  function->set_literals(*literals);
+  ASSERT(!function->has_initial_map());
+  ASSERT(!function->has_prototype());
+  return function;
+}
+
+
+Handle<JSFunction> Factory::NewFunctionBoilerplate(Handle<String> name) {
+  Handle<SharedFunctionInfo> shared = NewSharedFunctionInfo(name);
+  CALL_HEAP_FUNCTION(Heap::AllocateFunction(Heap::boilerplate_function_map(),
+                                            *shared,
+                                            Heap::the_hole_value()),
+                     JSFunction);
+}
+
+
+Handle<JSFunction> Factory::NewFunctionWithPrototype(Handle<String> name,
+                                                     InstanceType type,
+                                                     int instance_size,
+                                                     Handle<JSObject> prototype,
+                                                     Handle<Code> code,
+                                                     bool force_initial_map) {
+  // Allocate the function
+  Handle<JSFunction> function = NewFunction(name, prototype);
+
+  function->set_code(*code);
+
+  if (force_initial_map ||
+      type != JS_OBJECT_TYPE ||
+      instance_size != JSObject::kHeaderSize) {
+    Handle<Map> initial_map = NewMap(type, instance_size);
+    function->set_initial_map(*initial_map);
+    initial_map->set_constructor(*function);
+  }
+
+  // Set function.prototype and give the prototype a constructor
+  // property that refers to the function.
+  SetPrototypeProperty(function, prototype);
+  SetProperty(prototype, Factory::constructor_symbol(), function, DONT_ENUM);
+  return function;
+}
+
+
+Handle<Code> Factory::NewCode(const CodeDesc& desc,
+                              ZoneScopeInfo* sinfo,
+                              Code::Flags flags,
+                              Handle<Object> self_ref) {
+  CALL_HEAP_FUNCTION(Heap::CreateCode(desc, sinfo, flags, self_ref), Code);
+}
+
+
+Handle<Code> Factory::CopyCode(Handle<Code> code) {
+  CALL_HEAP_FUNCTION(Heap::CopyCode(*code), Code);
+}
+
+
+static inline Object* DoCopyInsert(DescriptorArray* array,
+                                   String* key,
+                                   Object* value,
+                                   PropertyAttributes attributes) {
+  CallbacksDescriptor desc(key, value, attributes);
+  Object* obj = array->CopyInsert(&desc, REMOVE_TRANSITIONS);
+  return obj;
+}
+
+
+// Allocate the new array.
+Handle<DescriptorArray> Factory::CopyAppendProxyDescriptor(
+    Handle<DescriptorArray> array,
+    Handle<String> key,
+    Handle<Object> value,
+    PropertyAttributes attributes) {
+  CALL_HEAP_FUNCTION(DoCopyInsert(*array, *key, *value, attributes),
+                     DescriptorArray);
+}
+
+
+Handle<String> Factory::SymbolFromString(Handle<String> value) {
+  CALL_HEAP_FUNCTION(Heap::LookupSymbol(*value), String);
+}
+
+
+Handle<DescriptorArray> Factory::CopyAppendCallbackDescriptors(
+    Handle<DescriptorArray> array,
+    Handle<Object> descriptors) {
+  v8::NeanderArray callbacks(descriptors);
+  int nof_callbacks = callbacks.length();
+  Handle<DescriptorArray> result =
+      NewDescriptorArray(array->number_of_descriptors() + nof_callbacks);
+
+  // Number of descriptors added to the result so far.
+  int descriptor_count = 0;
+
+  // Copy the descriptors from the array.
+  for (int i = 0; i < array->number_of_descriptors(); i++) {
+    if (array->GetType(i) != NULL_DESCRIPTOR) {
+      result->CopyFrom(descriptor_count++, *array, i);
+    }
+  }
+
+  // Number of duplicates detected.
+  int duplicates = 0;
+
+  // Fill in new callback descriptors.  Process the callbacks from
+  // back to front so that the last callback with a given name takes
+  // precedence over previously added callbacks with that name.
+  for (int i = nof_callbacks - 1; i >= 0; i--) {
+    Handle<AccessorInfo> entry =
+        Handle<AccessorInfo>(AccessorInfo::cast(callbacks.get(i)));
+    // Ensure the key is a symbol before writing into the instance descriptor.
+    Handle<String> key =
+        SymbolFromString(Handle<String>(String::cast(entry->name())));
+    // Check if a descriptor with this name already exists before writing.
+    if (result->LinearSearch(*key, descriptor_count) ==
+        DescriptorArray::kNotFound) {
+      CallbacksDescriptor desc(*key, *entry, entry->property_attributes());
+      result->Set(descriptor_count, &desc);
+      descriptor_count++;
+    } else {
+      duplicates++;
+    }
+  }
+
+  // If duplicates were detected, allocate a result of the right size
+  // and transfer the elements.
+  if (duplicates > 0) {
+    int number_of_descriptors = result->number_of_descriptors() - duplicates;
+    Handle<DescriptorArray> new_result =
+        NewDescriptorArray(number_of_descriptors);
+    for (int i = 0; i < number_of_descriptors; i++) {
+      new_result->CopyFrom(i, *result, i);
+    }
+    result = new_result;
+  }
+
+  // Sort the result before returning.
+  result->Sort();
+  return result;
+}
+
+
+Handle<JSObject> Factory::NewJSObject(Handle<JSFunction> constructor,
+                                      PretenureFlag pretenure) {
+  CALL_HEAP_FUNCTION(Heap::AllocateJSObject(*constructor, pretenure), JSObject);
+}
+
+
+Handle<GlobalObject> Factory::NewGlobalObject(
+    Handle<JSFunction> constructor) {
+  CALL_HEAP_FUNCTION(Heap::AllocateGlobalObject(*constructor),
+                     GlobalObject);
+}
+
+
+
+Handle<JSObject> Factory::NewJSObjectFromMap(Handle<Map> map) {
+  CALL_HEAP_FUNCTION(Heap::AllocateJSObjectFromMap(*map, NOT_TENURED),
+                     JSObject);
+}
+
+
+Handle<JSArray> Factory::NewJSArray(int length,
+                                    PretenureFlag pretenure) {
+  Handle<JSObject> obj = NewJSObject(Top::array_function(), pretenure);
+  CALL_HEAP_FUNCTION(Handle<JSArray>::cast(obj)->Initialize(length), JSArray);
+}
+
+
+Handle<JSArray> Factory::NewJSArrayWithElements(Handle<FixedArray> elements,
+                                                PretenureFlag pretenure) {
+  Handle<JSArray> result =
+      Handle<JSArray>::cast(NewJSObject(Top::array_function(), pretenure));
+  result->SetContent(*elements);
+  return result;
+}
+
+
+Handle<SharedFunctionInfo> Factory::NewSharedFunctionInfo(Handle<String> name) {
+  CALL_HEAP_FUNCTION(Heap::AllocateSharedFunctionInfo(*name),
+                     SharedFunctionInfo);
+}
+
+
+Handle<String> Factory::NumberToString(Handle<Object> number) {
+  CALL_HEAP_FUNCTION(Heap::NumberToString(*number), String);
+}
+
+
+Handle<NumberDictionary> Factory::DictionaryAtNumberPut(
+    Handle<NumberDictionary> dictionary,
+    uint32_t key,
+    Handle<Object> value) {
+  CALL_HEAP_FUNCTION(dictionary->AtNumberPut(key, *value), NumberDictionary);
+}
+
+
+Handle<JSFunction> Factory::NewFunctionHelper(Handle<String> name,
+                                              Handle<Object> prototype) {
+  Handle<SharedFunctionInfo> function_share = NewSharedFunctionInfo(name);
+  CALL_HEAP_FUNCTION(Heap::AllocateFunction(*Top::function_map(),
+                                            *function_share,
+                                            *prototype),
+                     JSFunction);
+}
+
+
+Handle<JSFunction> Factory::NewFunction(Handle<String> name,
+                                        Handle<Object> prototype) {
+  Handle<JSFunction> fun = NewFunctionHelper(name, prototype);
+  fun->set_context(Top::context()->global_context());
+  return fun;
+}
+
+
+Handle<Object> Factory::ToObject(Handle<Object> object,
+                                 Handle<Context> global_context) {
+  CALL_HEAP_FUNCTION(object->ToObject(*global_context), Object);
+}
+
+
+#ifdef ENABLE_DEBUGGER_SUPPORT
+Handle<DebugInfo> Factory::NewDebugInfo(Handle<SharedFunctionInfo> shared) {
+  // Get the original code of the function.
+  Handle<Code> code(shared->code());
+
+  // Create a copy of the code before allocating the debug info object to avoid
+  // allocation while setting up the debug info object.
+  Handle<Code> original_code(*Factory::CopyCode(code));
+
+  // Allocate initial fixed array for active break points before allocating the
+  // debug info object to avoid allocation while setting up the debug info
+  // object.
+  Handle<FixedArray> break_points(
+      Factory::NewFixedArray(Debug::kEstimatedNofBreakPointsInFunction));
+
+  // Create and set up the debug info object. Debug info contains function, a
+  // copy of the original code, the executing code and initial fixed array for
+  // active break points.
+  Handle<DebugInfo> debug_info =
+      Handle<DebugInfo>::cast(Factory::NewStruct(DEBUG_INFO_TYPE));
+  debug_info->set_shared(*shared);
+  debug_info->set_original_code(*original_code);
+  debug_info->set_code(*code);
+  debug_info->set_break_points(*break_points);
+
+  // Link debug info to function.
+  shared->set_debug_info(*debug_info);
+
+  return debug_info;
+}
+#endif
+
+
+Handle<JSObject> Factory::NewArgumentsObject(Handle<Object> callee,
+                                             int length) {
+  CALL_HEAP_FUNCTION(Heap::AllocateArgumentsObject(*callee, length), JSObject);
+}
+
+
+Handle<JSFunction> Factory::CreateApiFunction(
+    Handle<FunctionTemplateInfo> obj, ApiInstanceType instance_type) {
+  Handle<Code> code = Handle<Code>(Builtins::builtin(Builtins::HandleApiCall));
+
+  int internal_field_count = 0;
+  if (!obj->instance_template()->IsUndefined()) {
+    Handle<ObjectTemplateInfo> instance_template =
+        Handle<ObjectTemplateInfo>(
+            ObjectTemplateInfo::cast(obj->instance_template()));
+    internal_field_count =
+        Smi::cast(instance_template->internal_field_count())->value();
+  }
+
+  int instance_size = kPointerSize * internal_field_count;
+  InstanceType type = INVALID_TYPE;
+  switch (instance_type) {
+    case JavaScriptObject:
+      type = JS_OBJECT_TYPE;
+      instance_size += JSObject::kHeaderSize;
+      break;
+    case InnerGlobalObject:
+      type = JS_GLOBAL_OBJECT_TYPE;
+      instance_size += JSGlobalObject::kSize;
+      break;
+    case OuterGlobalObject:
+      type = JS_GLOBAL_PROXY_TYPE;
+      instance_size += JSGlobalProxy::kSize;
+      break;
+    default:
+      break;
+  }
+  ASSERT(type != INVALID_TYPE);
+
+  Handle<JSFunction> result =
+      Factory::NewFunction(Factory::empty_symbol(),
+                           type,
+                           instance_size,
+                           code,
+                           true);
+  // Set class name.
+  Handle<Object> class_name = Handle<Object>(obj->class_name());
+  if (class_name->IsString()) {
+    result->shared()->set_instance_class_name(*class_name);
+    result->shared()->set_name(*class_name);
+  }
+
+  Handle<Map> map = Handle<Map>(result->initial_map());
+
+  // Mark as undetectable if needed.
+  if (obj->undetectable()) {
+    map->set_is_undetectable();
+  }
+
+  // Mark as hidden for the __proto__ accessor if needed.
+  if (obj->hidden_prototype()) {
+    map->set_is_hidden_prototype();
+  }
+
+  // Mark as needs_access_check if needed.
+  if (obj->needs_access_check()) {
+    map->set_is_access_check_needed(true);
+  }
+
+  // Set interceptor information in the map.
+  if (!obj->named_property_handler()->IsUndefined()) {
+    map->set_has_named_interceptor();
+  }
+  if (!obj->indexed_property_handler()->IsUndefined()) {
+    map->set_has_indexed_interceptor();
+  }
+
+  // Set instance call-as-function information in the map.
+  if (!obj->instance_call_handler()->IsUndefined()) {
+    map->set_has_instance_call_handler();
+  }
+
+  result->shared()->set_function_data(*obj);
+  result->shared()->DontAdaptArguments();
+
+  // Recursively copy parent templates' accessors, 'data' may be modified.
+  Handle<DescriptorArray> array =
+      Handle<DescriptorArray>(map->instance_descriptors());
+  while (true) {
+    Handle<Object> props = Handle<Object>(obj->property_accessors());
+    if (!props->IsUndefined()) {
+      array = Factory::CopyAppendCallbackDescriptors(array, props);
+    }
+    Handle<Object> parent = Handle<Object>(obj->parent_template());
+    if (parent->IsUndefined()) break;
+    obj = Handle<FunctionTemplateInfo>::cast(parent);
+  }
+  if (!array->IsEmpty()) {
+    map->set_instance_descriptors(*array);
+  }
+
+  return result;
+}
+
+
+Handle<MapCache> Factory::NewMapCache(int at_least_space_for) {
+  CALL_HEAP_FUNCTION(MapCache::Allocate(at_least_space_for), MapCache);
+}
+
+
+static Object* UpdateMapCacheWith(Context* context,
+                                  FixedArray* keys,
+                                  Map* map) {
+  Object* result = MapCache::cast(context->map_cache())->Put(keys, map);
+  if (!result->IsFailure()) context->set_map_cache(MapCache::cast(result));
+  return result;
+}
+
+
+Handle<MapCache> Factory::AddToMapCache(Handle<Context> context,
+                                        Handle<FixedArray> keys,
+                                        Handle<Map> map) {
+  CALL_HEAP_FUNCTION(UpdateMapCacheWith(*context, *keys, *map), MapCache);
+}
+
+
+Handle<Map> Factory::ObjectLiteralMapFromCache(Handle<Context> context,
+                                               Handle<FixedArray> keys) {
+  if (context->map_cache()->IsUndefined()) {
+    // Allocate the new map cache for the global context.
+    Handle<MapCache> new_cache = NewMapCache(24);
+    context->set_map_cache(*new_cache);
+  }
+  // Check to see whether there is a matching element in the cache.
+  Handle<MapCache> cache =
+      Handle<MapCache>(MapCache::cast(context->map_cache()));
+  Handle<Object> result = Handle<Object>(cache->Lookup(*keys));
+  if (result->IsMap()) return Handle<Map>::cast(result);
+  // Create a new map and add it to the cache.
+  Handle<Map> map =
+      CopyMap(Handle<Map>(context->object_function()->initial_map()),
+              keys->length());
+  AddToMapCache(context, keys, map);
+  return Handle<Map>(map);
+}
+
+
+void Factory::SetRegExpAtomData(Handle<JSRegExp> regexp,
+                                JSRegExp::Type type,
+                                Handle<String> source,
+                                JSRegExp::Flags flags,
+                                Handle<Object> data) {
+  Handle<FixedArray> store = NewFixedArray(JSRegExp::kAtomDataSize);
+
+  store->set(JSRegExp::kTagIndex, Smi::FromInt(type));
+  store->set(JSRegExp::kSourceIndex, *source);
+  store->set(JSRegExp::kFlagsIndex, Smi::FromInt(flags.value()));
+  store->set(JSRegExp::kAtomPatternIndex, *data);
+  regexp->set_data(*store);
+}
+
+void Factory::SetRegExpIrregexpData(Handle<JSRegExp> regexp,
+                                    JSRegExp::Type type,
+                                    Handle<String> source,
+                                    JSRegExp::Flags flags,
+                                    int capture_count) {
+  Handle<FixedArray> store = NewFixedArray(JSRegExp::kIrregexpDataSize);
+
+  store->set(JSRegExp::kTagIndex, Smi::FromInt(type));
+  store->set(JSRegExp::kSourceIndex, *source);
+  store->set(JSRegExp::kFlagsIndex, Smi::FromInt(flags.value()));
+  store->set(JSRegExp::kIrregexpASCIICodeIndex, Heap::the_hole_value());
+  store->set(JSRegExp::kIrregexpUC16CodeIndex, Heap::the_hole_value());
+  store->set(JSRegExp::kIrregexpMaxRegisterCountIndex, Smi::FromInt(0));
+  store->set(JSRegExp::kIrregexpCaptureCountIndex,
+             Smi::FromInt(capture_count));
+  regexp->set_data(*store);
+}
+
+
+
+void Factory::ConfigureInstance(Handle<FunctionTemplateInfo> desc,
+                                Handle<JSObject> instance,
+                                bool* pending_exception) {
+  // Configure the instance by adding the properties specified by the
+  // instance template.
+  Handle<Object> instance_template = Handle<Object>(desc->instance_template());
+  if (!instance_template->IsUndefined()) {
+    Execution::ConfigureInstance(instance,
+                                 instance_template,
+                                 pending_exception);
+  } else {
+    *pending_exception = false;
+  }
+}
+
+
+} }  // namespace v8::internal