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/*
* Copyright (C) 2015 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 <wtf/ThreadSafeRefCounted.h>
namespace JSC { namespace FTL {
class State;
struct OSRExit;
// This is an object that stores some interesting data about an OSR exit. It's expected that you will
// scrape this data from this object by the time compilation finishes.
struct OSRExitHandle : public ThreadSafeRefCounted<OSRExitHandle> {
OSRExitHandle(unsigned index, JITCode* jitCode)
: m_index(index)
, m_jitCode(jitCode)
{
}
unsigned m_index;
JITCode* m_jitCode;
// This is the label at which the OSR exit jump lives. This will get populated once the OSR exit
// emits its jump. This happens immediately when you call OSRExit::appendOSRExit(). It happens at
// some time during late path emission if you do OSRExit::appendOSRExitLater().
CCallHelpers::Label label;
// This emits the exit thunk and populates 'label'.
void emitExitThunk(State&, CCallHelpers&);
};
} } // namespace JSC::FTL
#endif // ENABLE(FTL_JIT)