| // Copyright 2017 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_WASM_WASM_OBJECTS_INL_H_ |
| #define V8_WASM_WASM_OBJECTS_INL_H_ |
| |
| #include "src/wasm/wasm-objects.h" |
| |
| #include "src/base/memory.h" |
| #include "src/heap/heap-write-barrier-inl.h" |
| #include "src/objects/contexts-inl.h" |
| #include "src/objects/foreign-inl.h" |
| #include "src/objects/heap-number-inl.h" |
| #include "src/objects/js-array-buffer-inl.h" |
| #include "src/objects/js-function-inl.h" |
| #include "src/objects/js-objects-inl.h" |
| #include "src/objects/managed.h" |
| #include "src/objects/oddball-inl.h" |
| #include "src/objects/script-inl.h" |
| #include "src/roots/roots.h" |
| #include "src/wasm/wasm-code-manager.h" |
| #include "src/wasm/wasm-module.h" |
| |
| // Has to be the last include (doesn't have include guards) |
| #include "src/objects/object-macros.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| #include "torque-generated/src/wasm/wasm-objects-tq-inl.inc" |
| |
| OBJECT_CONSTRUCTORS_IMPL(WasmExceptionObject, JSObject) |
| TQ_OBJECT_CONSTRUCTORS_IMPL(WasmExceptionTag) |
| OBJECT_CONSTRUCTORS_IMPL(WasmExportedFunctionData, Struct) |
| OBJECT_CONSTRUCTORS_IMPL(WasmGlobalObject, JSObject) |
| OBJECT_CONSTRUCTORS_IMPL(WasmInstanceObject, JSObject) |
| OBJECT_CONSTRUCTORS_IMPL(WasmMemoryObject, JSObject) |
| OBJECT_CONSTRUCTORS_IMPL(WasmModuleObject, JSObject) |
| OBJECT_CONSTRUCTORS_IMPL(WasmTableObject, JSObject) |
| OBJECT_CONSTRUCTORS_IMPL(AsmWasmData, Struct) |
| TQ_OBJECT_CONSTRUCTORS_IMPL(WasmTypeInfo) |
| TQ_OBJECT_CONSTRUCTORS_IMPL(WasmStruct) |
| TQ_OBJECT_CONSTRUCTORS_IMPL(WasmArray) |
| |
| CAST_ACCESSOR(WasmExceptionObject) |
| CAST_ACCESSOR(WasmExportedFunctionData) |
| CAST_ACCESSOR(WasmGlobalObject) |
| CAST_ACCESSOR(WasmInstanceObject) |
| CAST_ACCESSOR(WasmMemoryObject) |
| CAST_ACCESSOR(WasmModuleObject) |
| CAST_ACCESSOR(WasmTableObject) |
| CAST_ACCESSOR(AsmWasmData) |
| CAST_ACCESSOR(WasmTypeInfo) |
| CAST_ACCESSOR(WasmStruct) |
| CAST_ACCESSOR(WasmArray) |
| |
| #define OPTIONAL_ACCESSORS(holder, name, type, offset) \ |
| DEF_GETTER(holder, has_##name, bool) { \ |
| Object value = TaggedField<Object, offset>::load(isolate, *this); \ |
| return !value.IsUndefined(GetReadOnlyRoots(isolate)); \ |
| } \ |
| ACCESSORS_CHECKED2(holder, name, type, offset, \ |
| !value.IsUndefined(GetReadOnlyRoots(isolate)), true) |
| |
| #define PRIMITIVE_ACCESSORS(holder, name, type, offset) \ |
| type holder::name() const { \ |
| if (COMPRESS_POINTERS_BOOL && alignof(type) > kTaggedSize) { \ |
| /* TODO(ishell, v8:8875): When pointer compression is enabled 8-byte */ \ |
| /* size fields (external pointers, doubles and BigInt data) are only */ \ |
| /* kTaggedSize aligned so we have to use unaligned pointer friendly */ \ |
| /* way of accessing them in order to avoid undefined behavior in C++ */ \ |
| /* code. */ \ |
| return base::ReadUnalignedValue<type>(FIELD_ADDR(*this, offset)); \ |
| } else { \ |
| return *reinterpret_cast<type const*>(FIELD_ADDR(*this, offset)); \ |
| } \ |
| } \ |
| void holder::set_##name(type value) { \ |
| if (COMPRESS_POINTERS_BOOL && alignof(type) > kTaggedSize) { \ |
| /* TODO(ishell, v8:8875): When pointer compression is enabled 8-byte */ \ |
| /* size fields (external pointers, doubles and BigInt data) are only */ \ |
| /* kTaggedSize aligned so we have to use unaligned pointer friendly */ \ |
| /* way of accessing them in order to avoid undefined behavior in C++ */ \ |
| /* code. */ \ |
| base::WriteUnalignedValue<type>(FIELD_ADDR(*this, offset), value); \ |
| } else { \ |
| *reinterpret_cast<type*>(FIELD_ADDR(*this, offset)) = value; \ |
| } \ |
| } |
| |
| // WasmModuleObject |
| ACCESSORS(WasmModuleObject, managed_native_module, Managed<wasm::NativeModule>, |
| kNativeModuleOffset) |
| ACCESSORS(WasmModuleObject, export_wrappers, FixedArray, kExportWrappersOffset) |
| ACCESSORS(WasmModuleObject, script, Script, kScriptOffset) |
| wasm::NativeModule* WasmModuleObject::native_module() const { |
| return managed_native_module().raw(); |
| } |
| const std::shared_ptr<wasm::NativeModule>& |
| WasmModuleObject::shared_native_module() const { |
| return managed_native_module().get(); |
| } |
| const wasm::WasmModule* WasmModuleObject::module() const { |
| // TODO(clemensb): Remove this helper (inline in callers). |
| return native_module()->module(); |
| } |
| bool WasmModuleObject::is_asm_js() { |
| bool asm_js = is_asmjs_module(module()); |
| DCHECK_EQ(asm_js, script().IsUserJavaScript()); |
| return asm_js; |
| } |
| |
| // WasmTableObject |
| ACCESSORS(WasmTableObject, instance, HeapObject, kInstanceOffset) |
| ACCESSORS(WasmTableObject, entries, FixedArray, kEntriesOffset) |
| SMI_ACCESSORS(WasmTableObject, current_length, kCurrentLengthOffset) |
| ACCESSORS(WasmTableObject, maximum_length, Object, kMaximumLengthOffset) |
| ACCESSORS(WasmTableObject, dispatch_tables, FixedArray, kDispatchTablesOffset) |
| SMI_ACCESSORS(WasmTableObject, raw_type, kRawTypeOffset) |
| |
| // WasmMemoryObject |
| ACCESSORS(WasmMemoryObject, array_buffer, JSArrayBuffer, kArrayBufferOffset) |
| SMI_ACCESSORS(WasmMemoryObject, maximum_pages, kMaximumPagesOffset) |
| OPTIONAL_ACCESSORS(WasmMemoryObject, instances, WeakArrayList, kInstancesOffset) |
| |
| // WasmGlobalObject |
| ACCESSORS(WasmGlobalObject, instance, HeapObject, kInstanceOffset) |
| ACCESSORS(WasmGlobalObject, untagged_buffer, JSArrayBuffer, |
| kUntaggedBufferOffset) |
| ACCESSORS(WasmGlobalObject, tagged_buffer, FixedArray, kTaggedBufferOffset) |
| SMI_ACCESSORS(WasmGlobalObject, offset, kOffsetOffset) |
| // TODO(7748): This will not suffice to hold the 32-bit encoding of a ValueType. |
| // We need to devise and encoding that does, and also encodes is_mutable. |
| SMI_ACCESSORS(WasmGlobalObject, raw_type, kRawTypeOffset) |
| SMI_ACCESSORS(WasmGlobalObject, is_mutable, kIsMutableOffset) |
| |
| wasm::ValueType WasmGlobalObject::type() const { |
| return wasm::ValueType::FromRawBitField(static_cast<uint32_t>(raw_type())); |
| } |
| void WasmGlobalObject::set_type(wasm::ValueType value) { |
| set_raw_type(static_cast<int>(value.raw_bit_field())); |
| } |
| |
| int WasmGlobalObject::type_size() const { return type().element_size_bytes(); } |
| |
| Address WasmGlobalObject::address() const { |
| DCHECK_NE(type(), wasm::kWasmExternRef); |
| DCHECK_LE(offset() + type_size(), untagged_buffer().byte_length()); |
| return Address(untagged_buffer().backing_store()) + offset(); |
| } |
| |
| int32_t WasmGlobalObject::GetI32() { |
| return base::ReadLittleEndianValue<int32_t>(address()); |
| } |
| |
| int64_t WasmGlobalObject::GetI64() { |
| return base::ReadLittleEndianValue<int64_t>(address()); |
| } |
| |
| float WasmGlobalObject::GetF32() { |
| return base::ReadLittleEndianValue<float>(address()); |
| } |
| |
| double WasmGlobalObject::GetF64() { |
| return base::ReadLittleEndianValue<double>(address()); |
| } |
| |
| Handle<Object> WasmGlobalObject::GetRef() { |
| // We use this getter for externref, funcref, and exnref. |
| DCHECK(type().is_reference_type()); |
| return handle(tagged_buffer().get(offset()), GetIsolate()); |
| } |
| |
| void WasmGlobalObject::SetI32(int32_t value) { |
| base::WriteLittleEndianValue<int32_t>(address(), value); |
| } |
| |
| void WasmGlobalObject::SetI64(int64_t value) { |
| base::WriteLittleEndianValue<int64_t>(address(), value); |
| } |
| |
| void WasmGlobalObject::SetF32(float value) { |
| base::WriteLittleEndianValue<float>(address(), value); |
| } |
| |
| void WasmGlobalObject::SetF64(double value) { |
| base::WriteLittleEndianValue<double>(address(), value); |
| } |
| |
| void WasmGlobalObject::SetExternRef(Handle<Object> value) { |
| // We use this getter externref and exnref. |
| DCHECK(type().is_reference_to(wasm::HeapType::kExtern) || |
| type().is_reference_to(wasm::HeapType::kExn)); |
| tagged_buffer().set(offset(), *value); |
| } |
| |
| bool WasmGlobalObject::SetFuncRef(Isolate* isolate, Handle<Object> value) { |
| DCHECK_EQ(type(), wasm::kWasmFuncRef); |
| if (!value->IsNull(isolate) && |
| !WasmExternalFunction::IsWasmExternalFunction(*value) && |
| !WasmCapiFunction::IsWasmCapiFunction(*value)) { |
| return false; |
| } |
| tagged_buffer().set(offset(), *value); |
| return true; |
| } |
| |
| // WasmInstanceObject |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, memory_start, byte*, kMemoryStartOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, memory_size, size_t, kMemorySizeOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, memory_mask, size_t, kMemoryMaskOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, isolate_root, Address, |
| kIsolateRootOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, stack_limit_address, Address, |
| kStackLimitAddressOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, real_stack_limit_address, Address, |
| kRealStackLimitAddressOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, imported_function_targets, Address*, |
| kImportedFunctionTargetsOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, globals_start, byte*, |
| kGlobalsStartOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, imported_mutable_globals, Address*, |
| kImportedMutableGlobalsOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, indirect_function_table_size, uint32_t, |
| kIndirectFunctionTableSizeOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, indirect_function_table_sig_ids, |
| uint32_t*, kIndirectFunctionTableSigIdsOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, indirect_function_table_targets, |
| Address*, kIndirectFunctionTableTargetsOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, jump_table_start, Address, |
| kJumpTableStartOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, data_segment_starts, Address*, |
| kDataSegmentStartsOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, data_segment_sizes, uint32_t*, |
| kDataSegmentSizesOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, dropped_elem_segments, byte*, |
| kDroppedElemSegmentsOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, hook_on_function_call_address, Address, |
| kHookOnFunctionCallAddressOffset) |
| PRIMITIVE_ACCESSORS(WasmInstanceObject, num_liftoff_function_calls_array, |
| uint32_t*, kNumLiftoffFunctionCallsArrayOffset) |
| |
| ACCESSORS(WasmInstanceObject, module_object, WasmModuleObject, |
| kModuleObjectOffset) |
| ACCESSORS(WasmInstanceObject, exports_object, JSObject, kExportsObjectOffset) |
| ACCESSORS(WasmInstanceObject, native_context, Context, kNativeContextOffset) |
| OPTIONAL_ACCESSORS(WasmInstanceObject, memory_object, WasmMemoryObject, |
| kMemoryObjectOffset) |
| OPTIONAL_ACCESSORS(WasmInstanceObject, untagged_globals_buffer, JSArrayBuffer, |
| kUntaggedGlobalsBufferOffset) |
| OPTIONAL_ACCESSORS(WasmInstanceObject, tagged_globals_buffer, FixedArray, |
| kTaggedGlobalsBufferOffset) |
| OPTIONAL_ACCESSORS(WasmInstanceObject, imported_mutable_globals_buffers, |
| FixedArray, kImportedMutableGlobalsBuffersOffset) |
| OPTIONAL_ACCESSORS(WasmInstanceObject, tables, FixedArray, kTablesOffset) |
| OPTIONAL_ACCESSORS(WasmInstanceObject, indirect_function_tables, FixedArray, |
| kIndirectFunctionTablesOffset) |
| ACCESSORS(WasmInstanceObject, imported_function_refs, FixedArray, |
| kImportedFunctionRefsOffset) |
| OPTIONAL_ACCESSORS(WasmInstanceObject, indirect_function_table_refs, FixedArray, |
| kIndirectFunctionTableRefsOffset) |
| OPTIONAL_ACCESSORS(WasmInstanceObject, managed_native_allocations, Foreign, |
| kManagedNativeAllocationsOffset) |
| OPTIONAL_ACCESSORS(WasmInstanceObject, exceptions_table, FixedArray, |
| kExceptionsTableOffset) |
| OPTIONAL_ACCESSORS(WasmInstanceObject, wasm_external_functions, FixedArray, |
| kWasmExternalFunctionsOffset) |
| ACCESSORS(WasmInstanceObject, managed_object_maps, FixedArray, |
| kManagedObjectMapsOffset) |
| |
| void WasmInstanceObject::clear_padding() { |
| if (FIELD_SIZE(kOptionalPaddingOffset) != 0) { |
| DCHECK_EQ(4, FIELD_SIZE(kOptionalPaddingOffset)); |
| memset(reinterpret_cast<void*>(address() + kOptionalPaddingOffset), 0, |
| FIELD_SIZE(kOptionalPaddingOffset)); |
| } |
| } |
| |
| IndirectFunctionTableEntry::IndirectFunctionTableEntry( |
| Handle<WasmInstanceObject> instance, int table_index, int entry_index) |
| : instance_(table_index == 0 ? instance |
| : Handle<WasmInstanceObject>::null()), |
| table_(table_index != 0 |
| ? handle(WasmIndirectFunctionTable::cast( |
| instance->indirect_function_tables().get( |
| table_index)), |
| instance->GetIsolate()) |
| : Handle<WasmIndirectFunctionTable>::null()), |
| index_(entry_index) { |
| DCHECK_GE(entry_index, 0); |
| DCHECK_LT(entry_index, table_index == 0 |
| ? instance->indirect_function_table_size() |
| : table_->size()); |
| } |
| |
| IndirectFunctionTableEntry::IndirectFunctionTableEntry( |
| Handle<WasmIndirectFunctionTable> table, int entry_index) |
| : instance_(Handle<WasmInstanceObject>::null()), |
| table_(table), |
| index_(entry_index) { |
| DCHECK_GE(entry_index, 0); |
| DCHECK_LT(entry_index, table_->size()); |
| } |
| |
| ImportedFunctionEntry::ImportedFunctionEntry( |
| Handle<WasmInstanceObject> instance, int index) |
| : instance_(instance), index_(index) { |
| DCHECK_GE(index, 0); |
| DCHECK_LT(index, instance->module()->num_imported_functions); |
| } |
| |
| // WasmExceptionObject |
| ACCESSORS(WasmExceptionObject, serialized_signature, PodArray<wasm::ValueType>, |
| kSerializedSignatureOffset) |
| ACCESSORS(WasmExceptionObject, exception_tag, HeapObject, kExceptionTagOffset) |
| |
| // WasmExceptionPackage |
| OBJECT_CONSTRUCTORS_IMPL(WasmExceptionPackage, JSReceiver) |
| CAST_ACCESSOR(WasmExceptionPackage) |
| |
| // WasmExportedFunction |
| WasmExportedFunction::WasmExportedFunction(Address ptr) : JSFunction(ptr) { |
| SLOW_DCHECK(IsWasmExportedFunction(*this)); |
| } |
| CAST_ACCESSOR(WasmExportedFunction) |
| |
| // WasmExportedFunctionData |
| ACCESSORS(WasmExportedFunctionData, wrapper_code, Code, kWrapperCodeOffset) |
| ACCESSORS(WasmExportedFunctionData, instance, WasmInstanceObject, |
| kInstanceOffset) |
| SMI_ACCESSORS(WasmExportedFunctionData, jump_table_offset, |
| kJumpTableOffsetOffset) |
| SMI_ACCESSORS(WasmExportedFunctionData, function_index, kFunctionIndexOffset) |
| ACCESSORS(WasmExportedFunctionData, signature, Foreign, kSignatureOffset) |
| SMI_ACCESSORS(WasmExportedFunctionData, call_count, kCallCountOffset) |
| ACCESSORS(WasmExportedFunctionData, c_wrapper_code, Object, kCWrapperCodeOffset) |
| ACCESSORS(WasmExportedFunctionData, wasm_call_target, Object, |
| kWasmCallTargetOffset) |
| SMI_ACCESSORS(WasmExportedFunctionData, packed_args_size, kPackedArgsSizeOffset) |
| |
| // WasmJSFunction |
| WasmJSFunction::WasmJSFunction(Address ptr) : JSFunction(ptr) { |
| SLOW_DCHECK(IsWasmJSFunction(*this)); |
| } |
| CAST_ACCESSOR(WasmJSFunction) |
| |
| // WasmJSFunctionData |
| OBJECT_CONSTRUCTORS_IMPL(WasmJSFunctionData, Struct) |
| CAST_ACCESSOR(WasmJSFunctionData) |
| SMI_ACCESSORS(WasmJSFunctionData, serialized_return_count, |
| kSerializedReturnCountOffset) |
| SMI_ACCESSORS(WasmJSFunctionData, serialized_parameter_count, |
| kSerializedParameterCountOffset) |
| ACCESSORS(WasmJSFunctionData, serialized_signature, PodArray<wasm::ValueType>, |
| kSerializedSignatureOffset) |
| ACCESSORS(WasmJSFunctionData, callable, JSReceiver, kCallableOffset) |
| ACCESSORS(WasmJSFunctionData, wrapper_code, Code, kWrapperCodeOffset) |
| ACCESSORS(WasmJSFunctionData, wasm_to_js_wrapper_code, Code, |
| kWasmToJsWrapperCodeOffset) |
| |
| // WasmCapiFunction |
| WasmCapiFunction::WasmCapiFunction(Address ptr) : JSFunction(ptr) { |
| SLOW_DCHECK(IsWasmCapiFunction(*this)); |
| } |
| CAST_ACCESSOR(WasmCapiFunction) |
| |
| // WasmExternalFunction |
| WasmExternalFunction::WasmExternalFunction(Address ptr) : JSFunction(ptr) { |
| SLOW_DCHECK(IsWasmExternalFunction(*this)); |
| } |
| CAST_ACCESSOR(WasmExternalFunction) |
| |
| // WasmIndirectFunctionTable |
| OBJECT_CONSTRUCTORS_IMPL(WasmIndirectFunctionTable, Struct) |
| CAST_ACCESSOR(WasmIndirectFunctionTable) |
| PRIMITIVE_ACCESSORS(WasmIndirectFunctionTable, size, uint32_t, kSizeOffset) |
| PRIMITIVE_ACCESSORS(WasmIndirectFunctionTable, sig_ids, uint32_t*, |
| kSigIdsOffset) |
| PRIMITIVE_ACCESSORS(WasmIndirectFunctionTable, targets, Address*, |
| kTargetsOffset) |
| OPTIONAL_ACCESSORS(WasmIndirectFunctionTable, managed_native_allocations, |
| Foreign, kManagedNativeAllocationsOffset) |
| ACCESSORS(WasmIndirectFunctionTable, refs, FixedArray, kRefsOffset) |
| |
| #undef OPTIONAL_ACCESSORS |
| #undef READ_PRIMITIVE_FIELD |
| #undef WRITE_PRIMITIVE_FIELD |
| #undef PRIMITIVE_ACCESSORS |
| |
| wasm::ValueType WasmTableObject::type() { |
| // TODO(7748): Support other table types? Wait for spec to clear up. |
| return wasm::ValueType::Ref(raw_type(), wasm::kNullable); |
| } |
| |
| bool WasmMemoryObject::has_maximum_pages() { return maximum_pages() >= 0; } |
| |
| // AsmWasmData |
| ACCESSORS(AsmWasmData, managed_native_module, Managed<wasm::NativeModule>, |
| kManagedNativeModuleOffset) |
| ACCESSORS(AsmWasmData, export_wrappers, FixedArray, kExportWrappersOffset) |
| ACCESSORS(AsmWasmData, uses_bitset, HeapNumber, kUsesBitsetOffset) |
| |
| wasm::StructType* WasmStruct::type(Map map) { |
| WasmTypeInfo type_info = map.wasm_type_info(); |
| return reinterpret_cast<wasm::StructType*>(type_info.foreign_address()); |
| } |
| |
| wasm::StructType* WasmStruct::GcSafeType(Map map) { |
| DCHECK_EQ(WASM_STRUCT_TYPE, map.instance_type()); |
| HeapObject raw = HeapObject::cast(map.constructor_or_backpointer()); |
| MapWord map_word = raw.map_word(); |
| HeapObject forwarded = |
| map_word.IsForwardingAddress() ? map_word.ToForwardingAddress() : raw; |
| Foreign foreign = Foreign::cast(forwarded); |
| return reinterpret_cast<wasm::StructType*>(foreign.foreign_address()); |
| } |
| |
| wasm::StructType* WasmStruct::type() const { return type(map()); } |
| |
| ObjectSlot WasmStruct::RawField(int raw_offset) { |
| int offset = WasmStruct::kHeaderSize + raw_offset; |
| return ObjectSlot(FIELD_ADDR(*this, offset)); |
| } |
| |
| wasm::ArrayType* WasmArray::type(Map map) { |
| DCHECK_EQ(WASM_ARRAY_TYPE, map.instance_type()); |
| WasmTypeInfo type_info = map.wasm_type_info(); |
| return reinterpret_cast<wasm::ArrayType*>(type_info.foreign_address()); |
| } |
| |
| wasm::ArrayType* WasmArray::GcSafeType(Map map) { |
| DCHECK_EQ(WASM_ARRAY_TYPE, map.instance_type()); |
| HeapObject raw = HeapObject::cast(map.constructor_or_backpointer()); |
| MapWord map_word = raw.map_word(); |
| HeapObject forwarded = |
| map_word.IsForwardingAddress() ? map_word.ToForwardingAddress() : raw; |
| Foreign foreign = Foreign::cast(forwarded); |
| return reinterpret_cast<wasm::ArrayType*>(foreign.foreign_address()); |
| } |
| |
| wasm::ArrayType* WasmArray::type() const { return type(map()); } |
| |
| int WasmArray::SizeFor(Map map, int length) { |
| int element_size = type(map)->element_type().element_size_bytes(); |
| return kHeaderSize + RoundUp(element_size * length, kTaggedSize); |
| } |
| |
| void WasmTypeInfo::clear_foreign_address(Isolate* isolate) { |
| #ifdef V8_HEAP_SANDBOX |
| // Due to the type-specific pointer tags for external pointers, we need to |
| // allocate an entry in the table here even though it will just store nullptr. |
| AllocateExternalPointerEntries(isolate); |
| #endif |
| set_foreign_address(isolate, 0); |
| } |
| |
| #include "src/objects/object-macros-undef.h" |
| |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_WASM_WASM_OBJECTS_INL_H_ |
