1/* 2 * Copyright (C) 2013, 2014 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef FTLRegisterAtOffset_h 27#define FTLRegisterAtOffset_h 28 29#if ENABLE(FTL_JIT) 30 31#include "Reg.h" 32#include <wtf/PrintStream.h> 33 34namespace JSC { namespace FTL { 35 36class RegisterAtOffset { 37public: 38 RegisterAtOffset() 39 : m_offset(0) 40 { 41 } 42 43 RegisterAtOffset(Reg reg, ptrdiff_t offset) 44 : m_reg(reg) 45 , m_offset(offset) 46 { 47 } 48 49 bool operator!() const { return !m_reg; } 50 51 Reg reg() const { return m_reg; } 52 ptrdiff_t offset() const { return m_offset; } 53 54 bool operator==(const RegisterAtOffset& other) const 55 { 56 return reg() == other.reg() && offset() == other.offset(); 57 } 58 59 bool operator<(const RegisterAtOffset& other) const 60 { 61 if (reg() != other.reg()) 62 return reg() < other.reg(); 63 return offset() < other.offset(); 64 } 65 66 static Reg getReg(RegisterAtOffset* value) { return value->reg(); } 67 68 void dump(PrintStream& out) const; 69 70private: 71 Reg m_reg; 72 ptrdiff_t m_offset; 73}; 74 75} } // namespace JSC::FTL 76 77#endif // ENABLE(FTL_JIT) 78 79#endif // FTLRegisterAtOffset_h 80 81