stub fast api calls

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 8fb74b5c1b9e80406a6f424baa91c39dd1e53925..63e9f0721bec3b096a2fff4d925b25a7cd63f749 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -96,6 +96,7 @@ namespace internal {
   V(InternalArrayConstructor)            \
   V(ProfileEntryHook)                    \
   V(StoreGlobal)                         \
+  V(CallApiFunction)                     \
   /* IC Handler stubs */                 \
   V(LoadField)                           \
   V(KeyedLoadField)                      \
@@ -1035,6 +1036,32 @@ class StoreGlobalStub : public HandlerStub {
 };
 
 
+class CallApiFunctionStub : public PlatformCodeStub {
+ public:
+  CallApiFunctionStub(bool restore_context,
+                      bool call_data_undefined,
+                      int argc) {
+    bit_field_ =
+        RestoreContextBits::encode(restore_context) |
+        CallDataUndefinedBits::encode(call_data_undefined) |
+        ArgumentBits::encode(argc);
+  }
+
+ private:
+  virtual void Generate(MacroAssembler* masm) V8_OVERRIDE;
+  virtual Major MajorKey() V8_OVERRIDE { return CallApiFunction; }
+  virtual int MinorKey() V8_OVERRIDE { return bit_field_; }
+
+  class RestoreContextBits: public BitField<bool, 0, 1> {};
+  class CallDataUndefinedBits: public BitField<bool, 1, 1> {};
+  class ArgumentBits: public BitField<int, 2, Code::kArgumentsBits> {};
+
+  int bit_field_;
+
+  DISALLOW_COPY_AND_ASSIGN(CallApiFunctionStub);
+};
+
+
 class KeyedLoadFieldStub: public LoadFieldStub {
  public:
   KeyedLoadFieldStub(bool inobject, int index, Representation representation)