[Interpreter] Add CallRuntime support to the interpreter.

src/compiler/interpreter-assembler.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/compiler/interpreter-assembler.h"
 
 #include <ostream>
 
 #include "src/code-factory.h"
 #include "src/compiler/graph.h"
@@ skipping 281 matching lines @@
   Node* shared_info =
       LoadObjectField(function, JSFunction::kSharedFunctionInfoOffset);
   Node* vector =
       LoadObjectField(shared_info, SharedFunctionInfo::kFeedbackVectorOffset);
   return vector;
 }
 
 
 Node* InterpreterAssembler::CallJS(Node* function, Node* first_arg,
                                    Node* arg_count) {
-  Callable builtin = CodeFactory::PushArgsAndCall(isolate());
+  Callable builtin = CodeFactory::InterpreterPushArgsAndCall(isolate());
   CallDescriptor* descriptor = Linkage::GetStubCallDescriptor(
       isolate(), zone(), builtin.descriptor(), 0, CallDescriptor::kNoFlags);
 
   Node* code_target = HeapConstant(builtin.code());
 
   Node** args = zone()->NewArray<Node*>(4);
   args[0] = arg_count;
   args[1] = first_arg;
   args[2] = function;
   args[3] = ContextTaggedPointer();
@@ skipping 30 matching lines @@
   args[0] = arg1;
   args[1] = arg2;
   args[2] = arg3;
   args[3] = arg4;
   args[4] = arg5;
   args[5] = ContextTaggedPointer();
   return CallIC(descriptor, target, args);
 }
 
 
+Node* InterpreterAssembler::CallRuntime(Node* function_id, Node* first_arg,
+                                        Node* arg_count) {
+  Callable builtin = CodeFactory::InterpreterCEntry(isolate());

[Michael Starzinger, 2015/09/29 08:28:34]

nit: This is no longer a "builtin", should we just use "callable" for this local
variable throughout the file for consistency and to avoid confusion?

[rmcilroy, 2015/10/01 17:02:44]

Done.

+  CallDescriptor* descriptor = Linkage::GetStubCallDescriptor(
+      isolate(), zone(), builtin.descriptor(), 0, CallDescriptor::kNoFlags);
+
+  Node* code_target = HeapConstant(builtin.code());
+
+  // Get the function entry from the function id.
+  Node* function_table = raw_assembler_->ExternalConstant(
+      ExternalReference::runtime_function_table_address(isolate()));
+  Node* function_offset = raw_assembler_->Int32Mul(
+      function_id, Int32Constant(sizeof(Runtime::Function)));
+  Node* function = IntPtrAdd(function_table, function_offset);
+  Node* function_entry = raw_assembler_->Load(
+      kMachPtr, function, Int32Constant(offsetof(Runtime::Function, entry)));
+
+  Node** args = zone()->NewArray<Node*>(4);
+  args[0] = arg_count;
+  args[1] = first_arg;
+  args[2] = function_entry;
+  args[3] = ContextTaggedPointer();
+
+  return raw_assembler_->CallN(descriptor, code_target, args);
+}
+
+
 Node* InterpreterAssembler::CallRuntime(Runtime::FunctionId function_id,
                                         Node* arg1) {
   return raw_assembler_->CallRuntime1(function_id, arg1,
                                       ContextTaggedPointer());
 }
 
 
 Node* InterpreterAssembler::CallRuntime(Runtime::FunctionId function_id,
                                         Node* arg1, Node* arg2) {
   return raw_assembler_->CallRuntime2(function_id, arg1, arg2,
@@ skipping 115 matching lines @@
   return raw_assembler_->schedule();
 }
 
 
 Zone* InterpreterAssembler::zone() { return raw_assembler_->zone(); }
 
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8