mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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109 lines
4.3 KiB
C++
109 lines
4.3 KiB
C++
/*
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* Copyright (C) 2017 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#if ENABLE(WEBASSEMBLY)
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#include "WasmFormat.h"
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#include <wtf/BitVector.h>
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#include <wtf/Optional.h>
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namespace JSC { namespace Wasm {
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struct ModuleInformation : public ThreadSafeRefCounted<ModuleInformation> {
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ModuleInformation();
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ModuleInformation(const ModuleInformation&) = delete;
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ModuleInformation(ModuleInformation&&) = delete;
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static Ref<ModuleInformation> create()
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{
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return adoptRef(*new ModuleInformation);
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}
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JS_EXPORT_PRIVATE ~ModuleInformation();
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size_t functionIndexSpaceSize() const { return importFunctionSignatureIndices.size() + internalFunctionSignatureIndices.size(); }
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bool isImportedFunctionFromFunctionIndexSpace(size_t functionIndex) const
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{
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ASSERT(functionIndex < functionIndexSpaceSize());
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return functionIndex < importFunctionSignatureIndices.size();
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}
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SignatureIndex signatureIndexFromFunctionIndexSpace(size_t functionIndex) const
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{
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return isImportedFunctionFromFunctionIndexSpace(functionIndex)
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? importFunctionSignatureIndices[functionIndex]
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: internalFunctionSignatureIndices[functionIndex - importFunctionSignatureIndices.size()];
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}
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uint32_t importFunctionCount() const { return importFunctionSignatureIndices.size(); }
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uint32_t internalFunctionCount() const { return internalFunctionSignatureIndices.size(); }
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// Currently, our wasm implementation allows only one memory and table.
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// If we need to remove this limitation, we would have MemoryInformation and TableInformation in the Vectors.
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uint32_t memoryCount() const { return memory ? 1 : 0; }
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uint32_t tableCount() const { return tables.size(); }
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uint32_t elementCount() const { return elements.size(); }
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uint32_t dataSegmentsCount() const { return numberOfDataSegments; }
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const TableInformation& table(unsigned index) const { return tables[index]; }
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const BitVector& referencedFunctions() const { return m_referencedFunctions; }
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void addReferencedFunction(unsigned index) const { m_referencedFunctions.set(index); }
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bool isDeclaredFunction(uint32_t index) const { return m_declaredFunctions.contains(index); }
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void addDeclaredFunction(uint32_t index) { m_declaredFunctions.set(index); }
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Vector<Import> imports;
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Vector<SignatureIndex> importFunctionSignatureIndices;
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Vector<SignatureIndex> internalFunctionSignatureIndices;
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Vector<Ref<Signature>> usedSignatures;
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MemoryInformation memory;
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Vector<FunctionData> functions;
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Vector<Export> exports;
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Optional<uint32_t> startFunctionIndexSpace;
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Vector<Segment::Ptr> data;
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Vector<Element> elements;
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Vector<TableInformation> tables;
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Vector<GlobalInformation> globals;
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unsigned firstInternalGlobal { 0 };
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uint32_t codeSectionSize { 0 };
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Vector<CustomSection> customSections;
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Ref<NameSection> nameSection;
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uint32_t numberOfDataSegments { 0 };
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BitVector m_declaredFunctions;
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mutable BitVector m_referencedFunctions;
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};
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} } // namespace JSC::Wasm
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#endif // ENABLE(WEBASSEMBLY)
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