1/*
2 * Copyright (C) 2015-2016 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#pragma once
27
28#if ENABLE(ASSEMBLER)
29
30#include "RegisterAtOffset.h"
31#include "RegisterSet.h"
32
33namespace JSC {
34
35class RegisterAtOffsetList {
36 WTF_MAKE_FAST_ALLOCATED;
37public:
38 enum OffsetBaseType { FramePointerBased, ZeroBased };
39
40 RegisterAtOffsetList();
41 explicit RegisterAtOffsetList(RegisterSet, OffsetBaseType = FramePointerBased);
42
43 void dump(PrintStream&) const;
44
45 void clear()
46 {
47 m_registers.clear();
48 }
49
50 size_t size() const
51 {
52 return m_registers.size();
53 }
54
55 const RegisterAtOffset& at(size_t index) const
56 {
57 return m_registers.at(index);
58 }
59
60 RegisterAtOffset& at(size_t index)
61 {
62 return m_registers.at(index);
63 }
64
65 RegisterAtOffset* find(Reg) const;
66 unsigned indexOf(Reg) const; // Returns UINT_MAX if not found.
67
68 Vector<RegisterAtOffset>::const_iterator begin() const { return m_registers.begin(); }
69 Vector<RegisterAtOffset>::const_iterator end() const { return m_registers.end(); }
70
71 static const RegisterAtOffsetList& llintBaselineCalleeSaveRegisters(); // Registers and Offsets saved and used by the LLInt.
72
73private:
74 Vector<RegisterAtOffset> m_registers;
75};
76
77} // namespace JSC
78
79#endif // ENABLE(ASSEMBLER)
80