Implement ES6 rest parameters

src/code-stubs.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_CODE_STUBS_H_
 #define V8_CODE_STUBS_H_
 
 #include "src/allocation.h"
 #include "src/assembler.h"
 #include "src/codegen.h"
@@ skipping 76 matching lines @@
   V(TransitionElementsKind)                 \
   V(VectorKeyedLoad)                        \
   V(VectorLoad)                             \
   /* IC Handler stubs */                    \
   V(LoadConstant)                           \
   V(LoadField)                              \
   V(KeyedLoadSloppyArguments)               \
   V(StoreField)                             \
   V(StoreGlobal)                            \
   V(StoreTransition)                        \
-  V(StringLength)
+  V(StringLength)                           \
+  V(RestParamAccess)
 
 // List of code stubs only used on ARM 32 bits platforms.
 #if V8_TARGET_ARCH_ARM
 #define CODE_STUB_LIST_ARM(V) V(DirectCEntry)
 
 #else
 #define CODE_STUB_LIST_ARM(V)
 #endif
 
 // List of code stubs only used on ARM 64 bits platforms.
@@ skipping 1504 matching lines @@
   void GenerateNewSloppySlow(MacroAssembler* masm);
 
   void PrintName(std::ostream& os) const OVERRIDE;  // NOLINT
 
   class TypeBits : public BitField<Type, 0, 2> {};
 
   DEFINE_PLATFORM_CODE_STUB(ArgumentsAccess, PlatformCodeStub);
 };
 
 
+class RestParamAccessStub: public PlatformCodeStub {
+ public:
+  explicit RestParamAccessStub(Isolate* isolate) : PlatformCodeStub(isolate) { }
+
+  CallInterfaceDescriptor GetCallInterfaceDescriptor() OVERRIDE {
+    return ContextOnlyDescriptor(isolate());
+  }
+
+ private:
+  void GenerateNew(MacroAssembler* masm);
+
+  virtual void PrintName(std::ostream& os) const OVERRIDE;  // NOLINT
+
+  DEFINE_PLATFORM_CODE_STUB(RestParamAccess, PlatformCodeStub);
+};
+
+
 class RegExpExecStub: public PlatformCodeStub {
  public:
   explicit RegExpExecStub(Isolate* isolate) : PlatformCodeStub(isolate) { }
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(ContextOnly);
   DEFINE_PLATFORM_CODE_STUB(RegExpExec, PlatformCodeStub);
 };
 
 
 class RegExpConstructResultStub FINAL : public HydrogenCodeStub {
@@ skipping 1047 matching lines @@
 
 #undef DEFINE_CALL_INTERFACE_DESCRIPTOR
 #undef DEFINE_PLATFORM_CODE_STUB
 #undef DEFINE_HANDLER_CODE_STUB
 #undef DEFINE_HYDROGEN_CODE_STUB
 #undef DEFINE_CODE_STUB
 #undef DEFINE_CODE_STUB_BASE
 } }  // namespace v8::internal
 
 #endif  // V8_CODE_STUBS_H_