Absolute File Name: | /home/opencoverage/opencoverage/guest-scripts/qtdeclarative/src/qtdeclarative/src/3rdparty/masm/assembler/AssemblerBuffer.h |
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1 | /* | - | ||||||
2 | * Copyright (C) 2008, 2012 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 AssemblerBuffer_h | - | ||||||
27 | #define AssemblerBuffer_h | - | ||||||
28 | - | |||||||
29 | #if ENABLE(ASSEMBLER) | - | ||||||
30 | - | |||||||
31 | #include "ExecutableAllocator.h" | - | ||||||
32 | #include "JITCompilationEffort.h" | - | ||||||
33 | #include "JSGlobalData.h" | - | ||||||
34 | #include "stdint.h" | - | ||||||
35 | #include <string.h> | - | ||||||
36 | #include <wtf/Assertions.h> | - | ||||||
37 | #include <wtf/FastMalloc.h> | - | ||||||
38 | #include <wtf/StdLibExtras.h> | - | ||||||
39 | - | |||||||
40 | namespace JSC { | - | ||||||
41 | - | |||||||
42 | struct AssemblerLabel { | - | ||||||
43 | AssemblerLabel() | - | ||||||
44 | : m_offset(std::numeric_limits<uint32_t>::max()) | - | ||||||
45 | { | - | ||||||
46 | } executed 14077431 times by 153 tests: end of block Executed by:
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47 | - | |||||||
48 | explicit AssemblerLabel(uint32_t offset) | - | ||||||
49 | : m_offset(offset) | - | ||||||
50 | { | - | ||||||
51 | } executed 15128543 times by 153 tests: end of block Executed by:
| 15128543 | ||||||
52 | - | |||||||
53 | bool isSet() const { return (m_offset != std::numeric_limits<uint32_t>::max()); } executed 15127613 times by 153 tests: return (m_offset != std::numeric_limits<uint32_t>::max()); Executed by:
| 15127613 | ||||||
54 | - | |||||||
55 | AssemblerLabel labelAtOffset(int offset) const | - | ||||||
56 | { | - | ||||||
57 | return AssemblerLabel(m_offset + offset); never executed: return AssemblerLabel(m_offset + offset); | 0 | ||||||
58 | } | - | ||||||
59 | - | |||||||
60 | uint32_t m_offset; | - | ||||||
61 | }; | - | ||||||
62 | - | |||||||
63 | class AssemblerBuffer { | - | ||||||
64 | static const int inlineCapacity = 128; | - | ||||||
65 | public: | - | ||||||
66 | AssemblerBuffer() | - | ||||||
67 | : m_storage(inlineCapacity) | - | ||||||
68 | , m_buffer(&(*m_storage.begin())) | - | ||||||
69 | , m_capacity(inlineCapacity) | - | ||||||
70 | , m_index(0) | - | ||||||
71 | { | - | ||||||
72 | } executed 1162479 times by 153 tests: end of block Executed by:
| 1162479 | ||||||
73 | - | |||||||
74 | ~AssemblerBuffer() | - | ||||||
75 | { | - | ||||||
76 | } | - | ||||||
77 | - | |||||||
78 | bool isAvailable(int space) | - | ||||||
79 | { | - | ||||||
80 | return m_index + space <= m_capacity; executed 154137691 times by 153 tests: return m_index + space <= m_capacity; Executed by:
| 154137691 | ||||||
81 | } | - | ||||||
82 | - | |||||||
83 | void ensureSpace(int space) | - | ||||||
84 | { | - | ||||||
85 | if (!isAvailable(space))
| 1089551-46031451 | ||||||
86 | grow(); executed 1089697 times by 65 tests: grow(); Executed by:
| 1089697 | ||||||
87 | } executed 47121375 times by 153 tests: end of block Executed by:
| 47121375 | ||||||
88 | - | |||||||
89 | bool isAligned(int alignment) const | - | ||||||
90 | { | - | ||||||
91 | return !(m_index & (alignment - 1)); never executed: return !(m_index & (alignment - 1)); | 0 | ||||||
92 | } | - | ||||||
93 | - | |||||||
94 | template<typename IntegralType> | - | ||||||
95 | void putIntegral(IntegralType value) | - | ||||||
96 | { | - | ||||||
97 | ensureSpace(sizeof(IntegralType)); | - | ||||||
98 | putIntegralUnchecked(value); | - | ||||||
99 | } never executed: end of block | 0 | ||||||
100 | - | |||||||
101 | template<typename IntegralType> | - | ||||||
102 | void putIntegralUnchecked(IntegralType value) | - | ||||||
103 | { | - | ||||||
104 | ASSERT(isAvailable(sizeof(IntegralType))); | - | ||||||
105 | memcpy(m_buffer + m_index, &value, sizeof(IntegralType)); | - | ||||||
106 | m_index += sizeof(IntegralType); | - | ||||||
107 | } executed 107154444 times by 153 tests: end of block Executed by:
| 107154444 | ||||||
108 | - | |||||||
109 | void putByteUnchecked(int8_t value) { putIntegralUnchecked(value); } executed 94417305 times by 153 tests: end of block Executed by:
| 94417305 | ||||||
110 | void putByte(int8_t value) { putIntegral(value); } never executed: end of block | 0 | ||||||
111 | void putShortUnchecked(int16_t value) { putIntegralUnchecked(value); } never executed: end of block | 0 | ||||||
112 | void putShort(int16_t value) { putIntegral(value); } never executed: end of block | 0 | ||||||
113 | void putIntUnchecked(int32_t value) { putIntegralUnchecked(value); } executed 10408103 times by 153 tests: end of block Executed by:
| 10408103 | ||||||
114 | void putInt(int32_t value) { putIntegral(value); } never executed: end of block | 0 | ||||||
115 | void putInt64Unchecked(int64_t value) { putIntegralUnchecked(value); } executed 2429501 times by 153 tests: end of block Executed by:
| 2429501 | ||||||
116 | void putInt64(int64_t value) { putIntegral(value); } never executed: end of block | 0 | ||||||
117 | - | |||||||
118 | void* data() const | - | ||||||
119 | { | - | ||||||
120 | return m_buffer; executed 7521913 times by 153 tests: return m_buffer; Executed by:
| 7521913 | ||||||
121 | } | - | ||||||
122 | - | |||||||
123 | size_t codeSize() const | - | ||||||
124 | { | - | ||||||
125 | return m_index; executed 1164437 times by 153 tests: return m_index; Executed by:
| 1164437 | ||||||
126 | } | - | ||||||
127 | - | |||||||
128 | AssemblerLabel label() const | - | ||||||
129 | { | - | ||||||
130 | return AssemblerLabel(m_index); executed 15127999 times by 153 tests: return AssemblerLabel(m_index); Executed by:
| 15127999 | ||||||
131 | } | - | ||||||
132 | - | |||||||
133 | PassRefPtr<ExecutableMemoryHandle> executableCopy(JSGlobalData& globalData, void* ownerUID, JITCompilationEffort effort) | - | ||||||
134 | { | - | ||||||
135 | if (!m_index)
| 0-1162295 | ||||||
136 | return 0; never executed: return 0; | 0 | ||||||
137 | - | |||||||
138 | RefPtr<ExecutableMemoryHandle> result = globalData.executableAllocator.allocate(globalData, m_index, ownerUID, effort); | - | ||||||
139 | - | |||||||
140 | if (!result)
| 0-1163880 | ||||||
141 | return 0; never executed: return 0; | 0 | ||||||
142 | - | |||||||
143 | ExecutableAllocator::makeWritable(result->start(), result->sizeInBytes()); | - | ||||||
144 | - | |||||||
145 | memcpy(result->start(), m_buffer, m_index); | - | ||||||
146 | - | |||||||
147 | return result.release(); executed 1164564 times by 153 tests: return result.release(); Executed by:
| 1164564 | ||||||
148 | } | - | ||||||
149 | - | |||||||
150 | unsigned debugOffset() { return m_index; } never executed: return m_index; | 0 | ||||||
151 | - | |||||||
152 | protected: | - | ||||||
153 | void append(const char* data, int size) | - | ||||||
154 | { | - | ||||||
155 | if (!isAvailable(size))
| 0 | ||||||
156 | grow(size); never executed: grow(size); | 0 | ||||||
157 | - | |||||||
158 | memcpy(m_buffer + m_index, data, size); | - | ||||||
159 | m_index += size; | - | ||||||
160 | } never executed: end of block | 0 | ||||||
161 | - | |||||||
162 | void grow(int extraCapacity = 0) | - | ||||||
163 | { | - | ||||||
164 | m_capacity += m_capacity / 2 + extraCapacity; | - | ||||||
165 | - | |||||||
166 | m_storage.grow(m_capacity); | - | ||||||
167 | m_buffer = &(*m_storage.begin()); | - | ||||||
168 | } executed 1089715 times by 65 tests: end of block Executed by:
| 1089715 | ||||||
169 | - | |||||||
170 | private: | - | ||||||
171 | Vector<char, inlineCapacity, UnsafeVectorOverflow> m_storage; | - | ||||||
172 | char* m_buffer; | - | ||||||
173 | int m_capacity; | - | ||||||
174 | int m_index; | - | ||||||
175 | }; | - | ||||||
176 | - | |||||||
177 | } // namespace JSC | - | ||||||
178 | - | |||||||
179 | #endif // ENABLE(ASSEMBLER) | - | ||||||
180 | - | |||||||
181 | #endif // AssemblerBuffer_h | - | ||||||
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