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/*
* 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)
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