blob: c6359cbcd30c4ef26c46113aea2c1a76b62eb9f5 [file] [log] [blame]
// Copyright 2024 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/common/globals.h"
#include "src/sandbox/external-buffer-tag.h"
#include "src/sandbox/isolate.h"
namespace v8 {
namespace internal {
template <ExternalBufferTag tag>
class ExternalBufferMember {
ExternalBufferMember() = default;
void Init(Address host_address, IsolateForSandbox isolate,
std::pair<Address, size_t> value);
inline std::pair<Address, size_t> load(const IsolateForSandbox isolate) const;
Address storage_address() { return reinterpret_cast<Address>(storage_); }
alignas(alignof(Tagged_t)) char storage_[sizeof(ExternalBuffer_t)];
// Creates and initializes an entry in the external buffer table and writes the
// handle for that entry to the field.
template <ExternalBufferTag tag>
V8_INLINE void InitExternalBufferField(Address host_address,
Address field_address,
IsolateForSandbox isolate,
std::pair<Address, size_t> value);
// Reads the ExternalBufferHandle from the field and loads the corresponding
// (external pointer, size) tuple from the external buffer table.
template <ExternalBufferTag tag>
V8_INLINE std::pair<Address, size_t> ReadExternalBufferField(
Address field_address, IsolateForSandbox isolate);
} // namespace internal
} // namespace v8