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/*
* Copyright (C) 2017-2019 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, SubspaceAccess mode>
static IsoSubspace* subspaceFor(VM& vm)
{
return vm.webAssemblyWrapperFunctionSpace<mode>();
}
DECLARE_INFO;
static WebAssemblyWrapperFunction* create(VM&, JSGlobalObject*, Structure*, 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);
WriteBarrier<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)