Merge V8 5.4.500.40
Test: Manual - built & ran d8
Change-Id: I4edfa2853d3e565b729723645395688ece3193f4
diff --git a/src/interpreter/bytecode-decoder.h b/src/interpreter/bytecode-decoder.h
new file mode 100644
index 0000000..6613179
--- /dev/null
+++ b/src/interpreter/bytecode-decoder.h
@@ -0,0 +1,43 @@
+// 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.
+
+#ifndef V8_INTERPRETER_BYTECODE_DECODER_H_
+#define V8_INTERPRETER_BYTECODE_DECODER_H_
+
+#include <iosfwd>
+
+#include "src/interpreter/bytecode-register.h"
+#include "src/interpreter/bytecodes.h"
+
+namespace v8 {
+namespace internal {
+namespace interpreter {
+
+class BytecodeDecoder final {
+ public:
+ // Decodes a register operand in a byte array.
+ static Register DecodeRegisterOperand(const uint8_t* operand_start,
+ OperandType operand_type,
+ OperandScale operand_scale);
+
+ // Decodes a signed operand in a byte array.
+ static int32_t DecodeSignedOperand(const uint8_t* operand_start,
+ OperandType operand_type,
+ OperandScale operand_scale);
+
+ // Decodes an unsigned operand in a byte array.
+ static uint32_t DecodeUnsignedOperand(const uint8_t* operand_start,
+ OperandType operand_type,
+ OperandScale operand_scale);
+
+ // Decode a single bytecode and operands to |os|.
+ static std::ostream& Decode(std::ostream& os, const uint8_t* bytecode_start,
+ int number_of_parameters);
+};
+
+} // namespace interpreter
+} // namespace internal
+} // namespace v8
+
+#endif // V8_INTERPRETER_BYTECODE_DECODER_H_