[Interpreter] Add support for JS calls.

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/compiler/graph.h"
 #include "src/compiler/instruction-selector.h"
@@ skipping 84 matching lines @@
       Linkage::kInterpreterBytecodeOffsetParameter);
 }
 
 
 Node* InterpreterAssembler::DispatchTableRawPointer() {
   return raw_assembler_->Parameter(Linkage::kInterpreterDispatchTableParameter);
 }
 
 
 Node* InterpreterAssembler::RegisterFrameOffset(Node* index) {
-  return raw_assembler_->WordShl(index, Int32Constant(kPointerSizeLog2));
+  return WordShl(index, kPointerSizeLog2);
 }
 
 
+Node* InterpreterAssembler::RegisterLocation(Node* reg_index) {
+  return IntPtrAdd(RegisterFileRawPointer(), RegisterFrameOffset(reg_index));
+}
+
+
 Node* InterpreterAssembler::LoadRegister(Node* reg_index) {
   return raw_assembler_->Load(kMachAnyTagged, RegisterFileRawPointer(),
                               RegisterFrameOffset(reg_index));
 }
 
 
 Node* InterpreterAssembler::StoreRegister(Node* value, Node* reg_index) {
   return raw_assembler_->Store(kMachAnyTagged, RegisterFileRawPointer(),
                                RegisterFrameOffset(reg_index), value);
 }
 
 
 Node* InterpreterAssembler::BytecodeOperand(int operand_index) {
   DCHECK_LT(operand_index, interpreter::Bytecodes::NumberOfOperands(bytecode_));
   return raw_assembler_->Load(
       kMachUint8, BytecodeArrayTaggedPointer(),
-      raw_assembler_->IntPtrAdd(BytecodeOffset(),
-                                Int32Constant(1 + operand_index)));
+      IntPtrAdd(BytecodeOffset(), Int32Constant(1 + operand_index)));
 }
 
 
 Node* InterpreterAssembler::BytecodeOperandSignExtended(int operand_index) {
   DCHECK_LT(operand_index, interpreter::Bytecodes::NumberOfOperands(bytecode_));
   Node* load = raw_assembler_->Load(
       kMachInt8, BytecodeArrayTaggedPointer(),
-      raw_assembler_->IntPtrAdd(BytecodeOffset(),
-                                Int32Constant(1 + operand_index)));
+      IntPtrAdd(BytecodeOffset(), Int32Constant(1 + operand_index)));
   // Ensure that we sign extend to full pointer size
   if (kPointerSize == 8) {
     load = raw_assembler_->ChangeInt32ToInt64(load);
   }
   return load;
 }
 
 
+Node* InterpreterAssembler::BytecodeOperandCount(int operand_index) {
+  DCHECK_EQ(interpreter::OperandType::kCount,
+            interpreter::Bytecodes::GetOperandType(bytecode_, operand_index));
+  return BytecodeOperand(operand_index);
+}
+
+
 Node* InterpreterAssembler::BytecodeOperandImm8(int operand_index) {
   DCHECK_EQ(interpreter::OperandType::kImm8,
             interpreter::Bytecodes::GetOperandType(bytecode_, operand_index));
   return BytecodeOperandSignExtended(operand_index);
 }
 
 
 Node* InterpreterAssembler::BytecodeOperandIdx(int operand_index) {
   DCHECK_EQ(interpreter::OperandType::kIdx,
             interpreter::Bytecodes::GetOperandType(bytecode_, operand_index));
@@ skipping 36 matching lines @@
 Node* InterpreterAssembler::SmiTag(Node* value) {
   return raw_assembler_->WordShl(value, SmiShiftBitsConstant());
 }
 
 
 Node* InterpreterAssembler::SmiUntag(Node* value) {
   return raw_assembler_->WordSar(value, SmiShiftBitsConstant());
 }
 
 
+Node* InterpreterAssembler::IntPtrAdd(Node* a, Node* b) {
+  return raw_assembler_->IntPtrAdd(a, b);
+}
+
+
+Node* InterpreterAssembler::IntPtrSub(Node* a, Node* b) {
+  return raw_assembler_->IntPtrSub(a, b);
+}
+
+
+Node* InterpreterAssembler::WordShl(Node* value, int shift) {
+  return raw_assembler_->WordShl(value, Int32Constant(shift));
+}
+
+
 Node* InterpreterAssembler::LoadConstantPoolEntry(Node* index) {
   Node* constant_pool = LoadObjectField(BytecodeArrayTaggedPointer(),
                                         BytecodeArray::kConstantPoolOffset);
-  Node* entry_offset = raw_assembler_->IntPtrAdd(
-      IntPtrConstant(FixedArray::kHeaderSize - kHeapObjectTag),
-      raw_assembler_->WordShl(index, Int32Constant(kPointerSizeLog2)));
+  Node* entry_offset =
+      IntPtrAdd(IntPtrConstant(FixedArray::kHeaderSize - kHeapObjectTag),
+                WordShl(index, kPointerSizeLog2));
   return raw_assembler_->Load(kMachAnyTagged, constant_pool, entry_offset);
 }
 
 
 Node* InterpreterAssembler::LoadObjectField(Node* object, int offset) {
   return raw_assembler_->Load(kMachAnyTagged, object,
                               IntPtrConstant(offset - kHeapObjectTag));
 }
 
 
@@ skipping 13 matching lines @@
       kMachAnyTagged, RegisterFileRawPointer(),
       IntPtrConstant(InterpreterFrameConstants::kFunctionFromRegisterPointer));
   Node* shared_info =
       LoadObjectField(function, JSFunction::kSharedFunctionInfoOffset);
   Node* vector =
       LoadObjectField(shared_info, SharedFunctionInfo::kFeedbackVectorOffset);
   return vector;
 }
 
 
+Node* InterpreterAssembler::CallJS(Node* function, Node* first_var_arg,
+                                   Node* last_var_arg) {
+  CallDescriptor* descriptor = Linkage::GetJSCallDescriptor(
+      zone(), false, 0, CallDescriptor::kHasVarArgs);
+  Node* context = LoadObjectField(function, JSFunction::kContextOffset);
+  return raw_assembler_->CallVarArgs(descriptor, function, &context,
+                                     first_var_arg, last_var_arg);
+}
+
+
 Node* InterpreterAssembler::CallIC(CallInterfaceDescriptor descriptor,
                                    Node* target, Node* arg1, Node* arg2,
                                    Node* arg3, Node* arg4) {
   CallDescriptor* call_descriptor = Linkage::GetStubCallDescriptor(
       isolate(), zone(), descriptor, 0, CallDescriptor::kNoFlags);
 
   Node** args = zone()->NewArray<Node*>(5);
   args[0] = arg1;
   args[1] = arg2;
   args[2] = arg3;
@@ skipping 54 matching lines @@
                    DispatchTableRawPointer(),
                    ContextTaggedPointer() };
   Node* tail_call = raw_assembler_->TailCallN(
       call_descriptor(), exit_trampoline_code_object, args);
   // This should always be the end node.
   SetEndInput(tail_call);
 }
 
 
 Node* InterpreterAssembler::Advance(int delta) {
-  return raw_assembler_->IntPtrAdd(BytecodeOffset(), Int32Constant(delta));
+  return IntPtrAdd(BytecodeOffset(), Int32Constant(delta));
 }
 
 
 void InterpreterAssembler::Dispatch() {
   Node* new_bytecode_offset = Advance(interpreter::Bytecodes::Size(bytecode_));
   Node* target_bytecode = raw_assembler_->Load(
       kMachUint8, BytecodeArrayTaggedPointer(), new_bytecode_offset);
 
   // TODO(rmcilroy): Create a code target dispatch table to avoid conversion
   // from code object on every dispatch.
@@ skipping 52 matching lines @@
   return raw_assembler_->schedule();
 }
 
 
 Zone* InterpreterAssembler::zone() { return raw_assembler_->zone(); }
 
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8