1/*
2 * Copyright (C) 2015 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 "FPRInfo.h"
31#include "GPRInfo.h"
32#include "MacroAssembler.h"
33#include "Reg.h"
34
35namespace JSC {
36
37template<typename T>
38class RegisterMap {
39public:
40 T& operator[](Reg reg)
41 {
42 return m_map[reg.index()];
43 }
44
45 T& operator[](GPRReg gpr)
46 {
47 return m_map[MacroAssembler::registerIndex(gpr)];
48 }
49
50 T& operator[](FPRReg fpr)
51 {
52 return m_map[MacroAssembler::registerIndex(fpr)];
53 }
54
55 const T& operator[](Reg reg) const
56 {
57 return m_map[reg.index()];
58 }
59
60 const T& operator[](GPRReg gpr) const
61 {
62 return m_map[MacroAssembler::registerIndex(gpr)];
63 }
64
65 const T& operator[](FPRReg fpr) const
66 {
67 return m_map[MacroAssembler::registerIndex(fpr)];
68 }
69
70private:
71 std::array<T, MacroAssembler::totalNumberOfRegisters()> m_map { { } };
72};
73
74template<typename T>
75class GPRMap {
76public:
77 T& operator[](GPRReg gpr)
78 {
79 return m_map[MacroAssembler::registerIndex(gpr)];
80 }
81
82 const T& operator[](GPRReg gpr) const
83 {
84 return m_map[MacroAssembler::registerIndex(gpr)];
85 }
86
87private:
88 std::array<T, MacroAssembler::numberOfRegisters()> m_map { { } };
89};
90
91template<typename T>
92class FPRMap {
93public:
94 T& operator[](FPRReg fpr)
95 {
96 return m_map[MacroAssembler::fpRegisterIndex(fpr)];
97 }
98
99 const T& operator[](FPRReg fpr) const
100 {
101 return m_map[MacroAssembler::fpRegisterIndex(fpr)];
102 }
103
104private:
105 std::array<T, MacroAssembler::numberOfFPRegisters()> m_map { { } };
106};
107
108} // namespace JSC
109
110#endif // ENABLE(ASSEMBLER)
111