| // 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/field-offsets-tq.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_ |