ftl/FTLDWARFRegister.h

   1 /*
   2  * Copyright (C) 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 FTLDWARFRegister_h
  27 #define FTLDWARFRegister_h
  28
  29 #if ENABLE(FTL_JIT)
  30
  31 #include "Reg.h"
  32 #include <wtf/PrintStream.h>
  33
  34 namespace JSC { namespace FTL {
  35
  36 class DWARFRegister {
  37 public:
  38     DWARFRegister()
  39         : m_dwarfRegNum(-1)
  40     {
  41     }
  42
  43     explicit DWARFRegister(int16_t dwarfRegNum)
  44         : m_dwarfRegNum(dwarfRegNum)
  45     {
  46     }
  47
  48     int16_t dwarfRegNum() const { return m_dwarfRegNum; }
  49
  50     Reg reg() const; // This may return Reg() if it can't parse the Dwarf register number.
  51
  52     void dump(PrintStream&) const;
  53
  54 private:
  55     int16_t m_dwarfRegNum;
  56 };
  57
  58 } } // namespace JSC::FTL
  59
  60 #endif // ENABLE(FTL_JIT)
  61
  62 #endif // FTLDWARFRegister_h
  63