| /* |
| * Copyright (C) 2016-2021 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. |
| */ |
| |
| #include "config.h" |
| #include "JSWebAssemblyModule.h" |
| |
| #if ENABLE(WEBASSEMBLY) |
| |
| #include "JSCInlines.h" |
| #include "JSWebAssemblyCodeBlock.h" |
| #include "JSWebAssemblyCompileError.h" |
| #include "WasmFormat.h" |
| #include "WasmModule.h" |
| #include "WasmModuleInformation.h" |
| #include <wtf/StdLibExtras.h> |
| |
| namespace JSC { |
| |
| const ClassInfo JSWebAssemblyModule::s_info = { "WebAssembly.Module", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSWebAssemblyModule) }; |
| |
| JSWebAssemblyModule* JSWebAssemblyModule::createStub(VM& vm, JSGlobalObject* globalObject, Structure* structure, Wasm::Module::ValidationResult&& result) |
| { |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| if (!result.has_value()) { |
| auto* error = createJSWebAssemblyCompileError(globalObject, vm, result.error()); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| throwException(globalObject, scope, error); |
| return nullptr; |
| } |
| |
| auto* module = new (NotNull, allocateCell<JSWebAssemblyModule>(vm)) JSWebAssemblyModule(vm, structure, result.value().releaseNonNull()); |
| module->finishCreation(vm); |
| return module; |
| } |
| |
| Structure* JSWebAssemblyModule::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype) |
| { |
| return Structure::create(vm, globalObject, prototype, TypeInfo(WebAssemblyModuleType, StructureFlags), info()); |
| } |
| |
| |
| JSWebAssemblyModule::JSWebAssemblyModule(VM& vm, Structure* structure, Ref<Wasm::Module>&& module) |
| : Base(vm, structure) |
| , m_module(WTFMove(module)) |
| { |
| } |
| |
| void JSWebAssemblyModule::finishCreation(VM& vm) |
| { |
| Base::finishCreation(vm); |
| ASSERT(inherits(vm, info())); |
| |
| // On success, a new WebAssembly.Module object is returned with [[Module]] set to the validated Ast.module. |
| SymbolTable* exportSymbolTable = SymbolTable::create(vm); |
| const Wasm::ModuleInformation& moduleInformation = m_module->moduleInformation(); |
| { |
| auto offset = exportSymbolTable->takeNextScopeOffset(NoLockingNecessary); |
| exportSymbolTable->set(NoLockingNecessary, vm.propertyNames->starNamespacePrivateName.impl(), SymbolTableEntry(VarOffset(offset))); |
| } |
| for (auto& exp : moduleInformation.exports) { |
| auto offset = exportSymbolTable->takeNextScopeOffset(NoLockingNecessary); |
| String field = String::fromUTF8(exp.field); |
| exportSymbolTable->set(NoLockingNecessary, AtomString(field).impl(), SymbolTableEntry(VarOffset(offset))); |
| } |
| |
| m_exportSymbolTable.set(vm, this, exportSymbolTable); |
| } |
| |
| void JSWebAssemblyModule::destroy(JSCell* cell) |
| { |
| static_cast<JSWebAssemblyModule*>(cell)->JSWebAssemblyModule::~JSWebAssemblyModule(); |
| Wasm::SignatureInformation::tryCleanup(); |
| } |
| |
| const Wasm::ModuleInformation& JSWebAssemblyModule::moduleInformation() const |
| { |
| return m_module->moduleInformation(); |
| } |
| |
| SymbolTable* JSWebAssemblyModule::exportSymbolTable() const |
| { |
| return m_exportSymbolTable.get(); |
| } |
| |
| Wasm::SignatureIndex JSWebAssemblyModule::signatureIndexFromFunctionIndexSpace(unsigned functionIndexSpace) const |
| { |
| return m_module->signatureIndexFromFunctionIndexSpace(functionIndexSpace); |
| } |
| |
| JSWebAssemblyCodeBlock* JSWebAssemblyModule::codeBlock(Wasm::MemoryMode mode) |
| { |
| return m_codeBlocks[static_cast<size_t>(mode)].get(); |
| } |
| |
| Wasm::Module& JSWebAssemblyModule::module() |
| { |
| return m_module.get(); |
| } |
| |
| void JSWebAssemblyModule::setCodeBlock(VM& vm, Wasm::MemoryMode mode, JSWebAssemblyCodeBlock* codeBlock) |
| { |
| m_codeBlocks[static_cast<size_t>(mode)].set(vm, this, codeBlock); |
| } |
| |
| template<typename Visitor> |
| void JSWebAssemblyModule::visitChildrenImpl(JSCell* cell, Visitor& visitor) |
| { |
| JSWebAssemblyModule* thisObject = jsCast<JSWebAssemblyModule*>(cell); |
| ASSERT_GC_OBJECT_INHERITS(thisObject, info()); |
| |
| Base::visitChildren(thisObject, visitor); |
| visitor.append(thisObject->m_exportSymbolTable); |
| for (unsigned i = 0; i < Wasm::NumberOfMemoryModes; ++i) |
| visitor.append(thisObject->m_codeBlocks[i]); |
| } |
| |
| DEFINE_VISIT_CHILDREN(JSWebAssemblyModule); |
| |
| } // namespace JSC |
| |
| #endif // ENABLE(WEBASSEMBLY) |