/* * Copyright (C) 2017-2018 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 "JSWebAssemblyCodeBlock.h" #include "WebAssemblyFunctionBase.h" namespace JSC { using Wasm::WasmToWasmImportableFunction; class WebAssemblyWrapperFunction final : public WebAssemblyFunctionBase { public: using Base = WebAssemblyFunctionBase; const static unsigned StructureFlags = Base::StructureFlags; template<typename CellType> static IsoSubspace* subspaceFor(VM& vm) { return &vm.webAssemblyWrapperFunctionSpace; } DECLARE_INFO; static WebAssemblyWrapperFunction* create(VM&, JSGlobalObject*, JSObject*, unsigned importIndex, JSWebAssemblyInstance*, Wasm::SignatureIndex); static Structure* createStructure(VM&, JSGlobalObject*, JSValue); Wasm::SignatureIndex signatureIndex() const { return m_importableFunction.signatureIndex; } WasmToWasmImportableFunction::LoadLocation entrypointLoadLocation() const { return m_importableFunction.entrypointLoadLocation; } WasmToWasmImportableFunction importableFunction() const { return m_importableFunction; } JSObject* function() { return m_function.get(); } protected: static void visitChildren(JSCell*, SlotVisitor&); void finishCreation(VM&, NativeExecutable*, unsigned length, const String& name, JSObject*, JSWebAssemblyInstance*); private: WebAssemblyWrapperFunction(VM&, JSGlobalObject*, Structure*, WasmToWasmImportableFunction); PoisonedWriteBarrier<WebAssemblyWrapperFunctionPoison, JSObject> m_function; // It's safe to just hold the raw WasmToWasmImportableFunction because we have a reference // to our Instance, which points to the CodeBlock, which points to the Module // that exported us, which ensures that the actual Signature/code doesn't get deallocated. WasmToWasmImportableFunction m_importableFunction; }; } // namespace JSC #endif // ENABLE(WEBASSEMBLY)