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// 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_OBJECTS_FOREIGN_H_
#define V8_OBJECTS_FOREIGN_H_
#include "src/objects/heap-object.h"
#include "torque-generated/class-definitions-from-dsl.h"
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
namespace v8 {
namespace internal {
// Foreign describes objects pointing from JavaScript to C structures.
class Foreign : public HeapObject {
public:
// [address]: field containing the address.
inline Address foreign_address();
static inline bool IsNormalized(Object object);
DECL_CAST(Foreign)
// Dispatched behavior.
DECL_PRINTER(Foreign)
DECL_VERIFIER(Foreign)
DEFINE_FIELD_OFFSET_CONSTANTS(HeapObject::kHeaderSize,
TORQUE_GENERATED_FOREIGN_FIELDS)
#ifdef V8_COMPRESS_POINTERS
// TODO(ishell, v8:8875): When pointer compression is enabled the
// kForeignAddressOffset is only kTaggedSize aligned but we can keep using
// unaligned access since both x64 and arm64 architectures (where pointer
// compression is supported) allow unaligned access to full words.
STATIC_ASSERT(IsAligned(kForeignAddressOffset, kTaggedSize));
#else
STATIC_ASSERT(IsAligned(kForeignAddressOffset, kSystemPointerSize));
#endif
STATIC_ASSERT(kForeignAddressOffset == Internals::kForeignAddressOffset);
class BodyDescriptor;
private:
friend class Factory;
friend class SerializerDeserializer;
friend class StartupSerializer;
inline void set_foreign_address(Address value);
OBJECT_CONSTRUCTORS(Foreign, HeapObject);
};
} // namespace internal
} // namespace v8
#include "src/objects/object-macros-undef.h"
#endif // V8_OBJECTS_FOREIGN_H_
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