chromium/v8/test/common/assembler-tester.h

// Copyright 2018 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_TEST_COMMON_ASSEMBLER_TESTER_H_
#define V8_TEST_COMMON_ASSEMBLER_TESTER_H_

#include <memory>

#include "src/codegen/assembler.h"
#include "src/codegen/flush-instruction-cache.h"
#include "src/common/code-memory-access.h"

namespace v8 {
namespace internal {

class TestingAssemblerBuffer : public AssemblerBuffer { … };

// This scope class is mostly necesasry for arm64 tests running on Apple Silicon
// (M1) which prohibits reconfiguration of page permissions for RWX pages.
// Instead of altering the page permissions one must flip the X-W state by
// calling pthread_jit_write_protect_np() function.
// See RwxMemoryWriteScope for details.
class V8_NODISCARD AssemblerBufferWriteScope final { … };

static inline std::unique_ptr<TestingAssemblerBuffer> AllocateAssemblerBuffer(
    size_t requested = v8::internal::AssemblerBase::kDefaultBufferSize,
    void* address = nullptr,
    JitPermission jit_permission = JitPermission::kMapAsJittable) { … }

}  // namespace internal
}  // namespace v8

#endif  // V8_TEST_COMMON_ASSEMBLER_TESTER_H_