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// 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_UNITTESTS_INTERPRETER_BYTECODE_UTILS_H_
#define V8_UNITTESTS_INTERPRETER_BYTECODE_UTILS_H_
#include "src/frames.h"
#include "src/interpreter/bytecode-register.h"
namespace v8 {
namespace internal {
namespace interpreter {
#if V8_TARGET_LITTLE_ENDIAN
#define EXTRACT(x, n) static_cast<uint8_t>((x) >> (8 * n))
#define U16(i) EXTRACT(i, 0), EXTRACT(i, 1)
#define U32(i) EXTRACT(i, 0), EXTRACT(i, 1), EXTRACT(i, 2), EXTRACT(i, 3)
#elif V8_TARGET_BIG_ENDIAN
#define EXTRACT(x, n) static_cast<uint8_t>((x) >> (8 * n))
#define U16(i) EXTRACT(i, 1), EXTRACT(i, 0)
#define U32(i) EXTRACT(i, 3), EXTRACT(i, 2), EXTRACT(i, 1), EXTRACT(i, 0)
#else
#error "Unknown Architecture"
#endif
#define U8(i) static_cast<uint8_t>(i)
#define REG_OPERAND(i) \
(InterpreterFrameConstants::kRegisterFileFromFp / kPointerSize - (i))
#define R8(i) static_cast<uint8_t>(REG_OPERAND(i))
#define R16(i) U16(REG_OPERAND(i))
#define R32(i) U32(REG_OPERAND(i))
class BytecodeUtils {
public:
// Expose raw RegisterList construction to tests.
static RegisterList NewRegisterList(int first_reg_index, int register_count) {
return RegisterList(first_reg_index, register_count);
}
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(BytecodeUtils);
};
} // namespace interpreter
} // namespace internal
} // namespace v8
#endif // V8_UNITTESTS_INTERPRETER_BYTECODE_UTILS_H_
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