webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 98 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/wasm/js/JSWebAssemblyModule.cpp b/Source/JavaScriptCore/wasm/js/JSWebAssemblyModule.cpp
new file mode 100644
index 000000000..08fa58462
--- /dev/null
+++ b/Source/JavaScriptCore/wasm/js/JSWebAssemblyModule.cpp
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2016 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 "JSWebAssemblyCallee.h"
+#include "WasmFormat.h"
+#include "WasmMemory.h"
+#include <wtf/StdLibExtras.h>
+
+namespace JSC {
+
+const ClassInfo JSWebAssemblyModule::s_info = { "WebAssembly.Module", &Base::s_info, nullptr, CREATE_METHOD_TABLE(JSWebAssemblyModule) };
+
+JSWebAssemblyModule* JSWebAssemblyModule::create(VM& vm, Structure* structure, std::unique_ptr<Wasm::ModuleInformation>&& moduleInformation, Bag<CallLinkInfo>&& callLinkInfos, Vector<Wasm::WasmExitStubs>&& wasmExitStubs, SymbolTable* exportSymbolTable, unsigned calleeCount)
+{
+    auto* instance = new (NotNull, allocateCell<JSWebAssemblyModule>(vm.heap, allocationSize(calleeCount))) JSWebAssemblyModule(vm, structure, std::forward<std::unique_ptr<Wasm::ModuleInformation>>(moduleInformation), std::forward<Bag<CallLinkInfo>>(callLinkInfos), std::forward<Vector<Wasm::WasmExitStubs>>(wasmExitStubs), calleeCount);
+    instance->finishCreation(vm, exportSymbolTable);
+    return instance;
+}
+
+Structure* JSWebAssemblyModule::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
+{
+    return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
+}
+
+JSWebAssemblyModule::JSWebAssemblyModule(VM& vm, Structure* structure, std::unique_ptr<Wasm::ModuleInformation>&& moduleInformation, Bag<CallLinkInfo>&& callLinkInfos, Vector<Wasm::WasmExitStubs>&& wasmExitStubs, unsigned calleeCount)
+    : Base(vm, structure)
+    , m_moduleInformation(WTFMove(moduleInformation))
+    , m_callLinkInfos(WTFMove(callLinkInfos))
+    , m_wasmExitStubs(WTFMove(wasmExitStubs))
+    , m_calleeCount(calleeCount)
+{
+    memset(callees(), 0, m_calleeCount * sizeof(WriteBarrier<JSWebAssemblyCallee>) * 2);
+}
+
+void JSWebAssemblyModule::finishCreation(VM& vm, SymbolTable* exportSymbolTable)
+{
+    Base::finishCreation(vm);
+    ASSERT(inherits(vm, info()));
+    m_exportSymbolTable.set(vm, this, exportSymbolTable);
+}
+
+void JSWebAssemblyModule::destroy(JSCell* cell)
+{
+    static_cast<JSWebAssemblyModule*>(cell)->JSWebAssemblyModule::~JSWebAssemblyModule();
+}
+
+void JSWebAssemblyModule::visitChildren(JSCell* cell, SlotVisitor& 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 < thisObject->m_calleeCount * 2; i++)
+        visitor.append(thisObject->callees()[i]);
+
+    visitor.addUnconditionalFinalizer(&thisObject->m_unconditionalFinalizer);
+}
+
+void JSWebAssemblyModule::UnconditionalFinalizer::finalizeUnconditionally()
+{
+    JSWebAssemblyModule* thisObject = bitwise_cast<JSWebAssemblyModule*>(
+        bitwise_cast<char*>(this) - OBJECT_OFFSETOF(JSWebAssemblyModule, m_unconditionalFinalizer));
+    for (auto iter = thisObject->m_callLinkInfos.begin(); !!iter; ++iter)
+        (*iter)->visitWeak(*thisObject->vm());
+}
+
+} // namespace JSC
+
+#endif // ENABLE(WEBASSEMBLY)