1d1f52534e
RegisterLists should only be allocated via the register allocator. To ensure this, make the RegisterList constructor private and only expose it to tests and the BytecodeRegisterAllocator. Change-Id: I09ebfc5c0f1baecfb1333fd672b96d462fd26fcf Reviewed-on: https://chromium-review.googlesource.com/822196 Commit-Queue: Ross McIlroy <rmcilroy@chromium.org> Reviewed-by: Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#50073}
57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_UNITTESTS_INTERPRETER_BYTECODE_UTILS_H_
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#define V8_UNITTESTS_INTERPRETER_BYTECODE_UTILS_H_
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#include "src/frames.h"
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#include "src/interpreter/bytecode-register.h"
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namespace v8 {
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namespace internal {
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namespace interpreter {
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#if V8_TARGET_LITTLE_ENDIAN
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#define EXTRACT(x, n) static_cast<uint8_t>((x) >> (8 * n))
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#define U16(i) EXTRACT(i, 0), EXTRACT(i, 1)
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#define U32(i) EXTRACT(i, 0), EXTRACT(i, 1), EXTRACT(i, 2), EXTRACT(i, 3)
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#elif V8_TARGET_BIG_ENDIAN
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#define EXTRACT(x, n) static_cast<uint8_t>((x) >> (8 * n))
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#define U16(i) EXTRACT(i, 1), EXTRACT(i, 0)
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#define U32(i) EXTRACT(i, 3), EXTRACT(i, 2), EXTRACT(i, 1), EXTRACT(i, 0)
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#else
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#error "Unknown Architecture"
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#endif
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#define U8(i) static_cast<uint8_t>(i)
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#define REG_OPERAND(i) \
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(InterpreterFrameConstants::kRegisterFileFromFp / kPointerSize - (i))
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#define R8(i) static_cast<uint8_t>(REG_OPERAND(i))
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#define R16(i) U16(REG_OPERAND(i))
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#define R32(i) U32(REG_OPERAND(i))
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class BytecodeUtils {
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public:
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// Expose raw RegisterList construction to tests.
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static RegisterList NewRegisterList(int first_reg_index, int register_count) {
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return RegisterList(first_reg_index, register_count);
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}
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(BytecodeUtils);
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};
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} // namespace interpreter
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} // namespace internal
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} // namespace v8
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#endif // V8_UNITTESTS_INTERPRETER_BYTECODE_UTILS_H_
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