Absolute File Name: | /home/opencoverage/opencoverage/guest-scripts/qtdeclarative/src/qtdeclarative/src/3rdparty/masm/assembler/CodeLocation.h |
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1 | /* | - |
2 | * Copyright (C) 2009 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 CodeLocation_h | - |
27 | #define CodeLocation_h | - |
28 | - | |
29 | #include "MacroAssemblerCodeRef.h" | - |
30 | - | |
31 | #if ENABLE(ASSEMBLER) | - |
32 | - | |
33 | namespace JSC { | - |
34 | - | |
35 | class CodeLocationInstruction; | - |
36 | class CodeLocationLabel; | - |
37 | class CodeLocationJump; | - |
38 | class CodeLocationCall; | - |
39 | class CodeLocationNearCall; | - |
40 | class CodeLocationDataLabelCompact; | - |
41 | class CodeLocationDataLabel32; | - |
42 | class CodeLocationDataLabelPtr; | - |
43 | class CodeLocationConvertibleLoad; | - |
44 | - | |
45 | // The CodeLocation* types are all pretty much do-nothing wrappers around | - |
46 | // CodePtr (or MacroAssemblerCodePtr, to give it its full name). These | - |
47 | // classes only exist to provide type-safety when linking and patching code. | - |
48 | // | - |
49 | // The one new piece of functionallity introduced by these classes is the | - |
50 | // ability to create (or put another way, to re-discover) another CodeLocation | - |
51 | // at an offset from one you already know. When patching code to optimize it | - |
52 | // we often want to patch a number of instructions that are short, fixed | - |
53 | // offsets apart. To reduce memory overhead we will only retain a pointer to | - |
54 | // one of the instructions, and we will use the *AtOffset methods provided by | - |
55 | // CodeLocationCommon to find the other points in the code to modify. | - |
56 | class CodeLocationCommon : public MacroAssemblerCodePtr { | - |
57 | public: | - |
58 | CodeLocationInstruction instructionAtOffset(int offset); | - |
59 | CodeLocationLabel labelAtOffset(int offset); | - |
60 | CodeLocationJump jumpAtOffset(int offset); | - |
61 | CodeLocationCall callAtOffset(int offset); | - |
62 | CodeLocationNearCall nearCallAtOffset(int offset); | - |
63 | CodeLocationDataLabelPtr dataLabelPtrAtOffset(int offset); | - |
64 | CodeLocationDataLabel32 dataLabel32AtOffset(int offset); | - |
65 | CodeLocationDataLabelCompact dataLabelCompactAtOffset(int offset); | - |
66 | CodeLocationConvertibleLoad convertibleLoadAtOffset(int offset); | - |
67 | - | |
68 | protected: | - |
69 | CodeLocationCommon() | - |
70 | { | - |
71 | } | - |
72 | - | |
73 | CodeLocationCommon(MacroAssemblerCodePtr location) | - |
74 | : MacroAssemblerCodePtr(location) | - |
75 | { | - |
76 | } executed 612 times by 10 tests: end of block Executed by:
| 612 |
77 | }; | - |
78 | - | |
79 | class CodeLocationInstruction : public CodeLocationCommon { | - |
80 | public: | - |
81 | CodeLocationInstruction() {} | - |
82 | explicit CodeLocationInstruction(MacroAssemblerCodePtr location) | - |
83 | : CodeLocationCommon(location) {} never executed: end of block | 0 |
84 | explicit CodeLocationInstruction(void* location) | - |
85 | : CodeLocationCommon(MacroAssemblerCodePtr(location)) {} never executed: end of block | 0 |
86 | }; | - |
87 | - | |
88 | class CodeLocationLabel : public CodeLocationCommon { | - |
89 | public: | - |
90 | CodeLocationLabel() {} | - |
91 | explicit CodeLocationLabel(MacroAssemblerCodePtr location) | - |
92 | : CodeLocationCommon(location) {} never executed: end of block | 0 |
93 | explicit CodeLocationLabel(void* location) | - |
94 | : CodeLocationCommon(MacroAssemblerCodePtr(location)) {} executed 612 times by 10 tests: end of block Executed by:
| 612 |
95 | }; | - |
96 | - | |
97 | class CodeLocationJump : public CodeLocationCommon { | - |
98 | public: | - |
99 | CodeLocationJump() {} | - |
100 | explicit CodeLocationJump(MacroAssemblerCodePtr location) | - |
101 | : CodeLocationCommon(location) {} never executed: end of block | 0 |
102 | explicit CodeLocationJump(void* location) | - |
103 | : CodeLocationCommon(MacroAssemblerCodePtr(location)) {} never executed: end of block | 0 |
104 | }; | - |
105 | - | |
106 | class CodeLocationCall : public CodeLocationCommon { | - |
107 | public: | - |
108 | CodeLocationCall() {} | - |
109 | explicit CodeLocationCall(MacroAssemblerCodePtr location) | - |
110 | : CodeLocationCommon(location) {} never executed: end of block | 0 |
111 | explicit CodeLocationCall(void* location) | - |
112 | : CodeLocationCommon(MacroAssemblerCodePtr(location)) {} never executed: end of block | 0 |
113 | }; | - |
114 | - | |
115 | class CodeLocationNearCall : public CodeLocationCommon { | - |
116 | public: | - |
117 | CodeLocationNearCall() {} | - |
118 | explicit CodeLocationNearCall(MacroAssemblerCodePtr location) | - |
119 | : CodeLocationCommon(location) {} never executed: end of block | 0 |
120 | explicit CodeLocationNearCall(void* location) | - |
121 | : CodeLocationCommon(MacroAssemblerCodePtr(location)) {} never executed: end of block | 0 |
122 | }; | - |
123 | - | |
124 | class CodeLocationDataLabel32 : public CodeLocationCommon { | - |
125 | public: | - |
126 | CodeLocationDataLabel32() {} | - |
127 | explicit CodeLocationDataLabel32(MacroAssemblerCodePtr location) | - |
128 | : CodeLocationCommon(location) {} never executed: end of block | 0 |
129 | explicit CodeLocationDataLabel32(void* location) | - |
130 | : CodeLocationCommon(MacroAssemblerCodePtr(location)) {} never executed: end of block | 0 |
131 | }; | - |
132 | - | |
133 | class CodeLocationDataLabelCompact : public CodeLocationCommon { | - |
134 | public: | - |
135 | CodeLocationDataLabelCompact() { } | - |
136 | explicit CodeLocationDataLabelCompact(MacroAssemblerCodePtr location) | - |
137 | : CodeLocationCommon(location) { } never executed: end of block | 0 |
138 | explicit CodeLocationDataLabelCompact(void* location) | - |
139 | : CodeLocationCommon(MacroAssemblerCodePtr(location)) { } never executed: end of block | 0 |
140 | }; | - |
141 | - | |
142 | class CodeLocationDataLabelPtr : public CodeLocationCommon { | - |
143 | public: | - |
144 | CodeLocationDataLabelPtr() {} | - |
145 | explicit CodeLocationDataLabelPtr(MacroAssemblerCodePtr location) | - |
146 | : CodeLocationCommon(location) {} never executed: end of block | 0 |
147 | explicit CodeLocationDataLabelPtr(void* location) | - |
148 | : CodeLocationCommon(MacroAssemblerCodePtr(location)) {} never executed: end of block | 0 |
149 | }; | - |
150 | - | |
151 | class CodeLocationConvertibleLoad : public CodeLocationCommon { | - |
152 | public: | - |
153 | CodeLocationConvertibleLoad() { } | - |
154 | explicit CodeLocationConvertibleLoad(MacroAssemblerCodePtr location) | - |
155 | : CodeLocationCommon(location) { } never executed: end of block | 0 |
156 | explicit CodeLocationConvertibleLoad(void* location) | - |
157 | : CodeLocationCommon(MacroAssemblerCodePtr(location)) { } never executed: end of block | 0 |
158 | }; | - |
159 | - | |
160 | inline CodeLocationInstruction CodeLocationCommon::instructionAtOffset(int offset) | - |
161 | { | - |
162 | ASSERT_VALID_CODE_OFFSET(offset); | - |
163 | return CodeLocationInstruction(reinterpret_cast<char*>(dataLocation()) + offset); never executed: return CodeLocationInstruction(reinterpret_cast<char*>(dataLocation()) + offset); | 0 |
164 | } | - |
165 | - | |
166 | inline CodeLocationLabel CodeLocationCommon::labelAtOffset(int offset) | - |
167 | { | - |
168 | ASSERT_VALID_CODE_OFFSET(offset); | - |
169 | return CodeLocationLabel(reinterpret_cast<char*>(dataLocation()) + offset); never executed: return CodeLocationLabel(reinterpret_cast<char*>(dataLocation()) + offset); | 0 |
170 | } | - |
171 | - | |
172 | inline CodeLocationJump CodeLocationCommon::jumpAtOffset(int offset) | - |
173 | { | - |
174 | ASSERT_VALID_CODE_OFFSET(offset); | - |
175 | return CodeLocationJump(reinterpret_cast<char*>(dataLocation()) + offset); never executed: return CodeLocationJump(reinterpret_cast<char*>(dataLocation()) + offset); | 0 |
176 | } | - |
177 | - | |
178 | inline CodeLocationCall CodeLocationCommon::callAtOffset(int offset) | - |
179 | { | - |
180 | ASSERT_VALID_CODE_OFFSET(offset); | - |
181 | return CodeLocationCall(reinterpret_cast<char*>(dataLocation()) + offset); never executed: return CodeLocationCall(reinterpret_cast<char*>(dataLocation()) + offset); | 0 |
182 | } | - |
183 | - | |
184 | inline CodeLocationNearCall CodeLocationCommon::nearCallAtOffset(int offset) | - |
185 | { | - |
186 | ASSERT_VALID_CODE_OFFSET(offset); | - |
187 | return CodeLocationNearCall(reinterpret_cast<char*>(dataLocation()) + offset); never executed: return CodeLocationNearCall(reinterpret_cast<char*>(dataLocation()) + offset); | 0 |
188 | } | - |
189 | - | |
190 | inline CodeLocationDataLabelPtr CodeLocationCommon::dataLabelPtrAtOffset(int offset) | - |
191 | { | - |
192 | ASSERT_VALID_CODE_OFFSET(offset); | - |
193 | return CodeLocationDataLabelPtr(reinterpret_cast<char*>(dataLocation()) + offset); never executed: return CodeLocationDataLabelPtr(reinterpret_cast<char*>(dataLocation()) + offset); | 0 |
194 | } | - |
195 | - | |
196 | inline CodeLocationDataLabel32 CodeLocationCommon::dataLabel32AtOffset(int offset) | - |
197 | { | - |
198 | ASSERT_VALID_CODE_OFFSET(offset); | - |
199 | return CodeLocationDataLabel32(reinterpret_cast<char*>(dataLocation()) + offset); never executed: return CodeLocationDataLabel32(reinterpret_cast<char*>(dataLocation()) + offset); | 0 |
200 | } | - |
201 | - | |
202 | inline CodeLocationDataLabelCompact CodeLocationCommon::dataLabelCompactAtOffset(int offset) | - |
203 | { | - |
204 | ASSERT_VALID_CODE_OFFSET(offset); | - |
205 | return CodeLocationDataLabelCompact(reinterpret_cast<char*>(dataLocation()) + offset); never executed: return CodeLocationDataLabelCompact(reinterpret_cast<char*>(dataLocation()) + offset); | 0 |
206 | } | - |
207 | - | |
208 | inline CodeLocationConvertibleLoad CodeLocationCommon::convertibleLoadAtOffset(int offset) | - |
209 | { | - |
210 | ASSERT_VALID_CODE_OFFSET(offset); | - |
211 | return CodeLocationConvertibleLoad(reinterpret_cast<char*>(dataLocation()) + offset); never executed: return CodeLocationConvertibleLoad(reinterpret_cast<char*>(dataLocation()) + offset); | 0 |
212 | } | - |
213 | - | |
214 | } // namespace JSC | - |
215 | - | |
216 | #endif // ENABLE(ASSEMBLER) | - |
217 | - | |
218 | #endif // CodeLocation_h | - |
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