[Interpreter] Add support for JS runtime calls.

src/interpreter/interpreter.cc

 // Copyright 2015 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.
 
 #include "src/interpreter/interpreter.h"
 
 #include "src/code-factory.h"
 #include "src/compiler.h"
 #include "src/compiler/interpreter-assembler.h"
 #include "src/factory.h"
@@ skipping 896 matching lines @@
   Node* function_id = __ BytecodeOperandIdx(0);
   Node* first_arg_reg = __ BytecodeOperandReg(1);
   Node* first_arg = __ RegisterLocation(first_arg_reg);
   Node* args_count = __ BytecodeOperandCount(2);
   Node* result = __ CallRuntime(function_id, first_arg, args_count);
   __ SetAccumulator(result);
   __ Dispatch();
 }
 
 
+// CallJSRuntime <context_index> <receiver> <arg_count>
+//
+// Call the JS runtime function that has the |context_index| with the receiver
+// in register |receiver| and |arg_count| arguments in subsequent registers.
+void Interpreter::DoCallJSRuntime(compiler::InterpreterAssembler* assembler) {
+  Node* context_index = __ BytecodeOperandIdx(0);
+  Node* receiver_reg = __ BytecodeOperandReg(1);
+  Node* first_arg = __ RegisterLocation(receiver_reg);
+  Node* args_count = __ BytecodeOperandCount(2);
+
+  // Get the function to call from the native context.
+  Node* context = __ GetContext();
+  Node* global = __ LoadContextSlot(context, Context::GLOBAL_OBJECT_INDEX);
+  Node* native_context =
+      __ LoadObjectField(global, JSGlobalObject::kNativeContextOffset);
+  Node* function = __ LoadContextSlot(native_context, context_index);
+
+  // Call the function.
+  Node* result = __ CallJS(function, first_arg, args_count);
+  __ SetAccumulator(result);
+  __ Dispatch();
+}
+
+
 // New <constructor> <arg_count>
 //
 // Call operator new with |constructor| and the first argument in
 // register |first_arg| and |arg_count| arguments in subsequent
 //
 void Interpreter::DoNew(compiler::InterpreterAssembler* assembler) {
   Callable ic = CodeFactory::InterpreterPushArgsAndConstruct(isolate_);
   Node* constructor_reg = __ BytecodeOperandReg(0);
   Node* constructor = __ LoadRegister(constructor_reg);
   Node* first_arg_reg = __ BytecodeOperandReg(1);
@@ skipping 499 matching lines @@
   Node* cache_length = __ LoadFixedArrayElement(for_in_state, 3);
   Node* result = __ CallRuntime(Runtime::kForInDone, index, cache_length);
   __ SetAccumulator(result);
   __ Dispatch();
 }
 
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8