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/*
* Copyright (C) 2017-2023 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
#if ENABLE(WEBASSEMBLY) && ENABLE(JIT)
#include <JavaScriptCore/MacroAssemblerCodeRef.h>
#include <JavaScriptCore/WasmJS.h>
#include <wtf/TZoneMalloc.h>
namespace JSC { namespace Wasm {
typedef MacroAssemblerCodeRef<JITThunkPtrTag> (*ThunkGenerator)(const AbstractLocker&);
MacroAssemblerCodeRef<JITThunkPtrTag> throwExceptionFromWasmThunkGenerator(const AbstractLocker&);
MacroAssemblerCodeRef<JITThunkPtrTag> throwStackOverflowFromWasmThunkGenerator(const AbstractLocker&);
MacroAssemblerCodeRef<JITThunkPtrTag> throwExceptionFromOMGThunkGenerator(const AbstractLocker&);
MacroAssemblerCodeRef<JITThunkPtrTag> catchInWasmThunkGenerator(const AbstractLocker&);
MacroAssemblerCodeRef<JITThunkPtrTag> crashDueToBBQStackOverflowGenerator(const AbstractLocker&);
MacroAssemblerCodeRef<JITThunkPtrTag> crashDueToOMGStackOverflowGenerator(const AbstractLocker&);
#if ENABLE(WEBASSEMBLY_BBQJIT)
MacroAssemblerCodeRef<JITThunkPtrTag> materializeBaselineDataGenerator(const AbstractLocker&);
MacroAssemblerCodeRef<JITThunkPtrTag> callPolymorphicCalleeGenerator(const AbstractLocker&);
#endif
#if ENABLE(WEBASSEMBLY_OMGJIT)
MacroAssemblerCodeRef<JITThunkPtrTag> triggerOMGEntryTierUpThunkGeneratorImpl(const AbstractLocker&, bool isSIMDContext);
MacroAssemblerCodeRef<JITThunkPtrTag> triggerOMGEntryTierUpThunkGeneratorSIMD(const AbstractLocker&);
MacroAssemblerCodeRef<JITThunkPtrTag> triggerOMGEntryTierUpThunkGeneratorNoSIMD(const AbstractLocker&);
constexpr ThunkGenerator triggerOMGEntryTierUpThunkGenerator(bool isSIMDContext)
{
if (isSIMDContext)
return triggerOMGEntryTierUpThunkGeneratorSIMD;
return triggerOMGEntryTierUpThunkGeneratorNoSIMD;
}
#endif
class Thunks {
WTF_MAKE_TZONE_ALLOCATED(Thunks);
WTF_MAKE_NONCOPYABLE(Thunks);
public:
static void initialize();
static Thunks& singleton();
MacroAssemblerCodeRef<JITThunkPtrTag> stub(ThunkGenerator);
MacroAssemblerCodeRef<JITThunkPtrTag> stub(const AbstractLocker&, ThunkGenerator);
MacroAssemblerCodeRef<JITThunkPtrTag> existingStub(ThunkGenerator);
private:
Thunks() = default;
UncheckedKeyHashMap<ThunkGenerator, MacroAssemblerCodeRef<JITThunkPtrTag>> m_stubs;
Lock m_lock;
};
} } // namespace JSC::Wasm
#endif // ENABLE(WEBASSEMBLY) && ENABLE(JIT)
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