mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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106 lines
2.9 KiB
C++
106 lines
2.9 KiB
C++
/*
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* Copyright (C) 2016 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(B3_JIT)
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#include "B3SparseCollection.h"
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#include <limits.h>
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#include <wtf/FastMalloc.h>
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#include <wtf/Noncopyable.h>
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#include <wtf/PrintStream.h>
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namespace JSC { namespace B3 {
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class Procedure;
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namespace Air {
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class StackSlot;
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} // namespace Air
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class StackSlot {
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WTF_MAKE_NONCOPYABLE(StackSlot);
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WTF_MAKE_FAST_ALLOCATED;
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public:
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~StackSlot();
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unsigned byteSize() const { return m_byteSize; }
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unsigned index() const { return m_index; }
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// This gets assigned at the end of compilation. But, you can totally pin stack slots. Use the
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// set method to do that.
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intptr_t offsetFromFP() const { return m_offsetFromFP; }
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// Note that this is meaningless unless the stack slot is Locked.
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void setOffsetFromFP(intptr_t value)
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{
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m_offsetFromFP = value;
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}
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void dump(PrintStream&) const;
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void deepDump(PrintStream&) const;
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private:
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friend class Air::StackSlot;
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friend class Procedure;
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friend class SparseCollection<StackSlot>;
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StackSlot(unsigned byteSize);
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unsigned m_index { UINT_MAX };
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unsigned m_byteSize { 0 };
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intptr_t m_offsetFromFP { 0 };
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};
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class DeepStackSlotDump {
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public:
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DeepStackSlotDump(const StackSlot* slot)
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: m_slot(slot)
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{
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}
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void dump(PrintStream& out) const
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{
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if (m_slot)
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m_slot->deepDump(out);
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else
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out.print("<null>");
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}
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private:
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const StackSlot* m_slot;
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};
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inline DeepStackSlotDump deepDump(const StackSlot* slot)
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{
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return DeepStackSlotDump(slot);
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}
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} } // namespace JSC::B3
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#endif // ENABLE(B3_JIT)
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