| /* |
| * Copyright (C) 2012 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 AbstractPC_h |
| #define AbstractPC_h |
| |
| #include "MacroAssemblerCodeRef.h" |
| #include <wtf/Platform.h> |
| |
| namespace JSC { |
| |
| class JSGlobalData; |
| class ExecState; |
| struct Instruction; |
| |
| class AbstractPC { |
| public: |
| AbstractPC() |
| : m_pointer(0) |
| , m_mode(None) |
| { |
| } |
| |
| AbstractPC(JSGlobalData&, ExecState*); |
| |
| #if ENABLE(JIT) |
| AbstractPC(ReturnAddressPtr ptr) |
| : m_pointer(ptr.value()) |
| , m_mode(JIT) |
| { |
| } |
| |
| bool hasJITReturnAddress() const { return m_mode == JIT; } |
| ReturnAddressPtr jitReturnAddress() const |
| { |
| ASSERT(hasJITReturnAddress()); |
| return ReturnAddressPtr(m_pointer); |
| } |
| #endif |
| |
| bool isSet() const { return m_mode != None; } |
| bool operator!() const { return !isSet(); } |
| |
| private: |
| void* m_pointer; |
| |
| enum Mode { None, JIT, Interpreter }; |
| Mode m_mode; |
| }; |
| |
| } // namespace JSC |
| |
| #endif // AbstractPC_h |
| |