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64 lines
2.3 KiB
C++
64 lines
2.3 KiB
C++
/*
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* Copyright (C) 2015 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "DFGCommon.h"
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#if ENABLE(FTL_JIT)
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#include "CCallHelpers.h"
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#include <wtf/ThreadSafeRefCounted.h>
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namespace JSC { namespace FTL {
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class State;
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struct OSRExit;
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// This is an object that stores some interesting data about an OSR exit. It's expected that you will
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// scrape this data from this object by the time compilation finishes.
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struct OSRExitHandle : public ThreadSafeRefCounted<OSRExitHandle> {
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OSRExitHandle(unsigned index, OSRExit& exit)
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: index(index)
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, exit(exit)
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{
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}
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unsigned index;
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OSRExit& exit;
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// This is the label at which the OSR exit jump lives. This will get populated once the OSR exit
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// emits its jump. This happens immediately when you call OSRExit::appendOSRExit(). It happens at
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// some time during late path emission if you do OSRExit::appendOSRExitLater().
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CCallHelpers::Label label;
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// This emits the exit thunk and populates 'label'.
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void emitExitThunk(State&, CCallHelpers&);
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};
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} } // namespace JSC::FTL
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#endif // ENABLE(FTL_JIT)
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