darling-JavaScriptCore/ftl/FTLExceptionTarget.h
2020-08-29 15:28:47 -04:00

65 lines
2.2 KiB
C++

/*
* Copyright (C) 2016-2018 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.
*/
#pragma once
#include "DFGCommon.h"
#if ENABLE(FTL_JIT)
#include "CCallHelpers.h"
#include "FTLOSRExitHandle.h"
#include <wtf/Box.h>
#include <wtf/ThreadSafeRefCounted.h>
namespace JSC { namespace FTL {
class State;
class ExceptionTarget : public ThreadSafeRefCounted<ExceptionTarget> {
public:
~ExceptionTarget();
// It's OK to call this during linking, but not any sooner.
CodeLocationLabel<ExceptionHandlerPtrTag> label(LinkBuffer&);
// Or, you can get a JumpList at any time. Anything you add to this JumpList will be linked to
// the target's label.
Box<CCallHelpers::JumpList> jumps(CCallHelpers&);
private:
friend class PatchpointExceptionHandle;
ExceptionTarget(bool isDefaultHandler, Box<CCallHelpers::Label>, RefPtr<OSRExitHandle>);
bool m_isDefaultHandler;
Box<CCallHelpers::Label> m_defaultHandler;
RefPtr<OSRExitHandle> m_handle;
};
} } // namespace JSC::FTL
#endif // ENABLE(FTL_JIT)