131 lines
5.0 KiB
C++
131 lines
5.0 KiB
C++
/*
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* Copyright (C) 2012-2021 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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#if ENABLE(JIT)
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#include "CallData.h"
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#include "Intrinsic.h"
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#include "MacroAssemblerCodeRef.h"
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#include "SlowPathFunction.h"
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#include "ThunkGenerator.h"
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#include "Weak.h"
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#include "WeakHandleOwner.h"
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#include <tuple>
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#include <wtf/HashMap.h>
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#include <wtf/HashSet.h>
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#include <wtf/PackedRefPtr.h>
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#include <wtf/RecursiveLockAdapter.h>
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#include <wtf/text/StringHash.h>
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namespace JSC {
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namespace DOMJIT {
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class Signature;
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}
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class VM;
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class NativeExecutable;
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class JITThunks final : private WeakHandleOwner {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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JITThunks();
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~JITThunks() final;
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MacroAssemblerCodePtr<JITThunkPtrTag> ctiNativeCall(VM&);
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MacroAssemblerCodePtr<JITThunkPtrTag> ctiNativeConstruct(VM&);
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MacroAssemblerCodePtr<JITThunkPtrTag> ctiNativeTailCall(VM&);
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MacroAssemblerCodePtr<JITThunkPtrTag> ctiNativeTailCallWithoutSavedTags(VM&);
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MacroAssemblerCodePtr<JITThunkPtrTag> ctiInternalFunctionCall(VM&);
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MacroAssemblerCodePtr<JITThunkPtrTag> ctiInternalFunctionConstruct(VM&);
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MacroAssemblerCodeRef<JITThunkPtrTag> ctiStub(VM&, ThunkGenerator);
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#if ENABLE(EXTRA_CTI_THUNKS)
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MacroAssemblerCodeRef<JITThunkPtrTag> ctiSlowPathFunctionStub(VM&, SlowPathFunction);
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#endif
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NativeExecutable* hostFunctionStub(VM&, TaggedNativeFunction, TaggedNativeFunction constructor, const String& name);
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NativeExecutable* hostFunctionStub(VM&, TaggedNativeFunction, TaggedNativeFunction constructor, ThunkGenerator, Intrinsic, const DOMJIT::Signature*, const String& name);
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NativeExecutable* hostFunctionStub(VM&, TaggedNativeFunction, ThunkGenerator, Intrinsic, const String& name);
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private:
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template <typename GenerateThunk>
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MacroAssemblerCodeRef<JITThunkPtrTag> ctiStubImpl(ThunkGenerator key, GenerateThunk);
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void finalize(Handle<Unknown>, void* context) final;
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struct Entry {
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PackedRefPtr<ExecutableMemoryHandle> handle;
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bool needsCrossModifyingCodeFence;
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};
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using CTIStubMap = HashMap<ThunkGenerator, Entry>;
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CTIStubMap m_ctiStubMap;
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using HostFunctionKey = std::tuple<TaggedNativeFunction, TaggedNativeFunction, String>;
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struct WeakNativeExecutableHash {
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static inline unsigned hash(const Weak<NativeExecutable>&);
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static inline unsigned hash(NativeExecutable*);
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static unsigned hash(const HostFunctionKey& key)
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{
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return hash(std::get<0>(key), std::get<1>(key), std::get<2>(key));
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}
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static inline bool equal(const Weak<NativeExecutable>&, const Weak<NativeExecutable>&);
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static inline bool equal(const Weak<NativeExecutable>&, const HostFunctionKey&);
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static inline bool equal(const Weak<NativeExecutable>&, NativeExecutable*);
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static inline bool equal(NativeExecutable&, NativeExecutable&);
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static constexpr bool safeToCompareToEmptyOrDeleted = false;
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private:
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static inline unsigned hashPointer(TaggedNativeFunction p)
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{
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return DefaultHash<TaggedNativeFunction>::hash(p);
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}
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static unsigned hash(TaggedNativeFunction function, TaggedNativeFunction constructor, const String& name)
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{
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// FIXME: Use WTF::computeHash.
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// https://bugs.webkit.org/show_bug.cgi?id=207835
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unsigned hash = WTF::pairIntHash(hashPointer(function), hashPointer(constructor));
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if (!name.isNull())
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hash = WTF::pairIntHash(hash, DefaultHash<String>::hash(name));
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return hash;
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}
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};
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struct HostKeySearcher;
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struct NativeExecutableTranslator;
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using WeakNativeExecutableSet = HashSet<Weak<NativeExecutable>, WeakNativeExecutableHash>;
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WeakNativeExecutableSet m_nativeExecutableSet;
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WTF::RecursiveLock m_lock;
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};
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} // namespace JSC
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#endif // ENABLE(JIT)
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