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/*
* Copyright (C) 2009-2021 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 "NativeExecutable.h"
#include "ExecutableBaseInlines.h"
#include "JSCInlines.h"
namespace JSC {
const ClassInfo NativeExecutable::s_info = { "NativeExecutable", &ExecutableBase::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(NativeExecutable) };
NativeExecutable* NativeExecutable::create(VM& vm, Ref<JITCode>&& callThunk, TaggedNativeFunction function, Ref<JITCode>&& constructThunk, TaggedNativeFunction constructor, const String& name)
{
NativeExecutable* executable;
executable = new (NotNull, allocateCell<NativeExecutable>(vm)) NativeExecutable(vm, function, constructor);
executable->finishCreation(vm, WTFMove(callThunk), WTFMove(constructThunk), name);
return executable;
}
void NativeExecutable::destroy(JSCell* cell)
{
static_cast<NativeExecutable*>(cell)->NativeExecutable::~NativeExecutable();
}
Structure* NativeExecutable::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue proto)
{
return Structure::create(vm, globalObject, proto, TypeInfo(NativeExecutableType, StructureFlags), info());
}
void NativeExecutable::finishCreation(VM& vm, Ref<JITCode>&& callThunk, Ref<JITCode>&& constructThunk, const String& name)
{
Base::finishCreation(vm);
m_jitCodeForCall = WTFMove(callThunk);
m_jitCodeForConstruct = WTFMove(constructThunk);
m_jitCodeForCallWithArityCheck = m_jitCodeForCall->addressForCall(MustCheckArity);
m_jitCodeForConstructWithArityCheck = m_jitCodeForConstruct->addressForCall(MustCheckArity);
m_name = name;
assertIsTaggedWith<JSEntryPtrTag>(m_jitCodeForCall->addressForCall(ArityCheckNotRequired).executableAddress());
assertIsTaggedWith<JSEntryPtrTag>(m_jitCodeForConstruct->addressForCall(ArityCheckNotRequired).executableAddress());
assertIsTaggedWith<JSEntryPtrTag>(m_jitCodeForCallWithArityCheck.executableAddress());
assertIsTaggedWith<JSEntryPtrTag>(m_jitCodeForConstructWithArityCheck.executableAddress());
}
NativeExecutable::NativeExecutable(VM& vm, TaggedNativeFunction function, TaggedNativeFunction constructor)
: ExecutableBase(vm, vm.nativeExecutableStructure.get())
, m_function(function)
, m_constructor(constructor)
{
}
const DOMJIT::Signature* NativeExecutable::signatureFor(CodeSpecializationKind kind) const
{
ASSERT(hasJITCodeFor(kind));
return generatedJITCodeFor(kind)->signature();
}
Intrinsic NativeExecutable::intrinsic() const
{
return generatedJITCodeFor(CodeForCall)->intrinsic();
}
CodeBlockHash NativeExecutable::hashFor(CodeSpecializationKind kind) const
{
if (kind == CodeForCall)
return CodeBlockHash(bitwise_cast<uintptr_t>(m_function));
RELEASE_ASSERT(kind == CodeForConstruct);
return CodeBlockHash(bitwise_cast<uintptr_t>(m_constructor));
}
JSString* NativeExecutable::toStringSlow(JSGlobalObject *globalObject)
{
VM& vm = getVM(globalObject);
auto throwScope = DECLARE_THROW_SCOPE(vm);
JSValue value = jsMakeNontrivialString(globalObject, "function ", name(), "() {\n [native code]\n}");
RETURN_IF_EXCEPTION(throwScope, nullptr);
JSString* asString = ::JSC::asString(value);
WTF::storeStoreFence();
m_asString.set(vm, this, asString);
return asString;
}
template<typename Visitor>
void NativeExecutable::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
NativeExecutable* thisObject = jsCast<NativeExecutable*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
visitor.append(thisObject->m_asString);
}
DEFINE_VISIT_CHILDREN(NativeExecutable);
} // namespace JSC
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