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
34namespace JSC { namespace FTL {
35
36class DWARFRegister {
37public:
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
54private:
55    int16_t m_dwarfRegNum;
56};
57
58} } // namespace JSC::FTL
59
60#endif // ENABLE(FTL_JIT)
61
62#endif // FTLDWARFRegister_h
63
64