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/*
* Copyright (C) 2016-2022 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#if ENABLE(WEBASSEMBLY)
#include "AbstractModuleRecord.h"
#include "WasmCreationMode.h"
#include "WasmModuleInformation.h"
namespace JSC {
class JSWebAssemblyInstance;
class JSWebAssemblyModule;
class WebAssemblyFunction;
// Based on the WebAssembly.Instance specification
// https://github.com/WebAssembly/design/blob/master/JS.md#webassemblyinstance-constructor
class WebAssemblyModuleRecord final : public AbstractModuleRecord {
friend class LLIntOffsetsExtractor;
public:
using Base = AbstractModuleRecord;
static constexpr DestructionMode needsDestruction = NeedsDestruction;
static void destroy(JSCell*);
template<typename CellType, SubspaceAccess mode>
static GCClient::IsoSubspace* subspaceFor(VM& vm)
{
return vm.webAssemblyModuleRecordSpace<mode>();
}
DECLARE_EXPORT_INFO;
static Structure* createStructure(VM&, JSGlobalObject*, JSValue);
static WebAssemblyModuleRecord* create(JSGlobalObject*, VM&, Structure*, const Identifier&, const Wasm::ModuleInformation&);
void prepareLink(VM&, JSWebAssemblyInstance*);
Synchronousness link(JSGlobalObject*, JSValue scriptFetcher);
void initializeImports(JSGlobalObject*, JSObject* importObject, Wasm::CreationMode);
void initializeExports(JSGlobalObject*);
JS_EXPORT_PRIVATE JSValue evaluate(JSGlobalObject*);
JSObject* exportsObject() const { return m_exportsObject.get(); }
static constexpr ptrdiff_t offsetOfExportsObject() { return OBJECT_OFFSETOF(WebAssemblyModuleRecord, m_exportsObject); }
private:
WebAssemblyModuleRecord(VM&, Structure*, const Identifier&);
void finishCreation(JSGlobalObject*, VM&, const Wasm::ModuleInformation&);
JSValue evaluateConstantExpression(JSGlobalObject*, const Vector<uint8_t>&, const Wasm::ModuleInformation&, Wasm::Type, uint64_t&);
DECLARE_VISIT_CHILDREN;
WriteBarrier<JSWebAssemblyInstance> m_instance;
WriteBarrier<JSObject> m_startFunction;
WriteBarrier<JSObject> m_exportsObject;
};
} // namespace JSC
#endif // ENABLE(WEBASSEMBLY)
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