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Diffstat (limited to 'Source/JavaScriptCore/jit/PolymorphicCallStubRoutine.h')
-rw-r--r-- | Source/JavaScriptCore/jit/PolymorphicCallStubRoutine.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/jit/PolymorphicCallStubRoutine.h b/Source/JavaScriptCore/jit/PolymorphicCallStubRoutine.h new file mode 100644 index 000000000..9d1491ca0 --- /dev/null +++ b/Source/JavaScriptCore/jit/PolymorphicCallStubRoutine.h @@ -0,0 +1,115 @@ +/* + * 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. + */ + +#ifndef PolymorphicCallStubRoutine_h +#define PolymorphicCallStubRoutine_h + +#if ENABLE(JIT) + +#include "CallEdge.h" +#include "CallVariant.h" +#include "CodeOrigin.h" +#include "GCAwareJITStubRoutine.h" +#include <wtf/FastMalloc.h> +#include <wtf/Noncopyable.h> +#include <wtf/Vector.h> + +namespace JSC { + +class CallLinkInfo; + +class PolymorphicCallNode : public BasicRawSentinelNode<PolymorphicCallNode> { + WTF_MAKE_NONCOPYABLE(PolymorphicCallNode); +public: + PolymorphicCallNode(CallLinkInfo* info) + : m_callLinkInfo(info) + { + } + + ~PolymorphicCallNode(); + + void unlink(VM&); + + bool hasCallLinkInfo(CallLinkInfo* info) { return m_callLinkInfo == info; } + void clearCallLinkInfo(); + +private: + CallLinkInfo* m_callLinkInfo; +}; + +class PolymorphicCallCase { +public: + PolymorphicCallCase() + : m_codeBlock(nullptr) + { + } + + PolymorphicCallCase(CallVariant variant, CodeBlock* codeBlock) + : m_variant(variant) + , m_codeBlock(codeBlock) + { + } + + CallVariant variant() const { return m_variant; } + CodeBlock* codeBlock() const { return m_codeBlock; } + + void dump(PrintStream&) const; + +private: + CallVariant m_variant; + CodeBlock* m_codeBlock; +}; + +class PolymorphicCallStubRoutine : public GCAwareJITStubRoutine { +public: + PolymorphicCallStubRoutine( + const MacroAssemblerCodeRef&, VM&, const JSCell* owner, + ExecState* callerFrame, CallLinkInfo&, const Vector<PolymorphicCallCase>&, + std::unique_ptr<uint32_t[]> fastCounts); + + virtual ~PolymorphicCallStubRoutine(); + + CallVariantList variants() const; + CallEdgeList edges() const; + + void clearCallNodesFor(CallLinkInfo*); + + bool visitWeak(VM&) override; + +protected: + virtual void markRequiredObjectsInternal(SlotVisitor&) override; + +private: + Vector<WriteBarrier<JSCell>, 2> m_variants; + std::unique_ptr<uint32_t[]> m_fastCounts; + Bag<PolymorphicCallNode> m_callNodes; +}; + +} // namespace JSC + +#endif // ENABLE(JIT) + +#endif // PolymorphicCallStubRoutine_h + |