/*

* Copyright (C) 2013 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.

*/

#ifndef FTLThunks_h

#define FTLThunks_h

#include <wtf/Platform.h>

#if ENABLE(FTL_JIT)

#include "FTLLocation.h"

#include "FTLSlowPathCallKey.h"

#include "MacroAssemblerCodeRef.h"

#include <wtf/HashMap.h>

namespace JSC {

class VM;

namespace FTL {

MacroAssemblerCodeRef osrExitGenerationWithoutStackMapThunkGenerator(VM*);

MacroAssemblerCodeRef osrExitGenerationWithStackMapThunkGenerator(VM&, const Location&);

MacroAssemblerCodeRef slowPathCallThunkGenerator(VM&, const SlowPathCallKey&);

template<typename MapType, typename KeyType, typename GeneratorType>

MacroAssemblerCodeRef generateIfNecessary(

VM& vm, MapType& map, const KeyType& key, GeneratorType generator)

{

typename MapType::iterator iter = map.find(key);

if (iter != map.end())

return iter->value;

MacroAssemblerCodeRef result = generator(vm, key);

map.add(key, result);

return result;

}

class Thunks {

public:

MacroAssemblerCodeRef getOSRExitGenerationThunk(VM& vm, const Location& location)

{

return generateIfNecessary(

vm, m_osrExitThunks, location, osrExitGenerationWithStackMapThunkGenerator);

}

MacroAssemblerCodeRef getSlowPathCallThunk(VM& vm, const SlowPathCallKey& key)

{

return generateIfNecessary(

vm, m_slowPathCallThunks, key, slowPathCallThunkGenerator);

}

private:

HashMap<Location, MacroAssemblerCodeRef> m_osrExitThunks;

HashMap<SlowPathCallKey, MacroAssemblerCodeRef> m_slowPathCallThunks;

};

} } // namespace JSC::FTL

#endif // ENABLE(FTL_JIT)

#endif // FTLTHunks_h