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https://github.com/darlinghq/darling-JavaScriptCore.git
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72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
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/*
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* Copyright (C) 2012 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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#include "MacroAssemblerCodeRef.h"
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namespace JSC {
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class VM;
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class ExecState;
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struct Instruction;
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class AbstractPC {
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public:
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AbstractPC()
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: m_pointer(0)
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, m_mode(None)
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{
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}
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AbstractPC(VM&, ExecState*);
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#if ENABLE(JIT)
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AbstractPC(ReturnAddressPtr ptr)
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: m_pointer(ptr.value())
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, m_mode(JIT)
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{
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}
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bool hasJITReturnAddress() const { return m_mode == JIT; }
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ReturnAddressPtr jitReturnAddress() const
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{
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ASSERT(hasJITReturnAddress());
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return ReturnAddressPtr(m_pointer);
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}
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#endif
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bool isSet() const { return m_mode != None; }
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bool operator!() const { return !isSet(); }
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private:
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void* m_pointer;
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enum Mode { None, JIT, Interpreter };
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Mode m_mode;
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};
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} // namespace JSC
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