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1 // Copyright 2006-2010 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 11 // with the distribution. |
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114 Address re_frame); | 114 Address re_frame); |
115 private: | 115 private: |
116 // Offsets from frame_pointer() of function parameters and stored registers. | 116 // Offsets from frame_pointer() of function parameters and stored registers. |
117 static const int kFramePointer = 0; | 117 static const int kFramePointer = 0; |
118 | 118 |
119 // Above the frame pointer - Stored registers and stack passed parameters. | 119 // Above the frame pointer - Stored registers and stack passed parameters. |
120 // Registers s0 to s7, fp, and ra. | 120 // Registers s0 to s7, fp, and ra. |
121 static const int kStoredRegisters = kFramePointer; | 121 static const int kStoredRegisters = kFramePointer; |
122 // Return address (stored from link register, read into pc on return). | 122 // Return address (stored from link register, read into pc on return). |
123 static const int kReturnAddress = kStoredRegisters + 9 * kPointerSize; | 123 static const int kReturnAddress = kStoredRegisters + 9 * kPointerSize; |
| 124 static const int kSecondaryReturnAddress = kReturnAddress + kPointerSize; |
124 // Stack frame header. | 125 // Stack frame header. |
125 static const int kStackFrameHeader = kReturnAddress + kPointerSize; | 126 static const int kStackFrameHeader = kReturnAddress + kPointerSize; |
126 // Stack parameters placed by caller. | 127 // Stack parameters placed by caller. |
127 static const int kRegisterOutput = kStackFrameHeader + 16; | 128 static const int kRegisterOutput = kStackFrameHeader + 20; |
128 static const int kStackHighEnd = kRegisterOutput + kPointerSize; | 129 static const int kStackHighEnd = kRegisterOutput + kPointerSize; |
129 static const int kDirectCall = kStackHighEnd + kPointerSize; | 130 static const int kDirectCall = kStackHighEnd + kPointerSize; |
130 static const int kIsolate = kDirectCall + kPointerSize; | 131 static const int kIsolate = kDirectCall + kPointerSize; |
131 | 132 |
132 // Below the frame pointer. | 133 // Below the frame pointer. |
133 // Register parameters stored by setup code. | 134 // Register parameters stored by setup code. |
134 static const int kInputEnd = kFramePointer - kPointerSize; | 135 static const int kInputEnd = kFramePointer - kPointerSize; |
135 static const int kInputStart = kInputEnd - kPointerSize; | 136 static const int kInputStart = kInputEnd - kPointerSize; |
136 static const int kStartIndex = kInputStart - kPointerSize; | 137 static const int kStartIndex = kInputStart - kPointerSize; |
137 static const int kInputString = kStartIndex - kPointerSize; | 138 static const int kInputString = kStartIndex - kPointerSize; |
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176 // regexp registers are addressed relative to this. | 177 // regexp registers are addressed relative to this. |
177 inline Register frame_pointer() { return fp; } | 178 inline Register frame_pointer() { return fp; } |
178 | 179 |
179 // The register containing the backtrack stack top. Provides a meaningful | 180 // The register containing the backtrack stack top. Provides a meaningful |
180 // name to the register. | 181 // name to the register. |
181 inline Register backtrack_stackpointer() { return t4; } | 182 inline Register backtrack_stackpointer() { return t4; } |
182 | 183 |
183 // Register holding pointer to the current code object. | 184 // Register holding pointer to the current code object. |
184 inline Register code_pointer() { return t1; } | 185 inline Register code_pointer() { return t1; } |
185 | 186 |
186 // Byte size of chars in the string to match (decided by the Mode argument) | 187 // Byte size of chars in the string to match (decided by the Mode argument). |
187 inline int char_size() { return static_cast<int>(mode_); } | 188 inline int char_size() { return static_cast<int>(mode_); } |
188 | 189 |
189 // Equivalent to a conditional branch to the label, unless the label | 190 // Equivalent to a conditional branch to the label, unless the label |
190 // is NULL, in which case it is a conditional Backtrack. | 191 // is NULL, in which case it is a conditional Backtrack. |
191 void BranchOrBacktrack(Label* to, | 192 void BranchOrBacktrack(Label* to, |
192 Condition condition, | 193 Condition condition, |
193 Register rs, | 194 Register rs, |
194 const Operand& rt); | 195 const Operand& rt); |
195 | 196 |
196 // Call and return internally in the generated code in a way that | 197 // Call and return internally in the generated code in a way that |
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221 | 222 |
222 MacroAssembler* masm_; | 223 MacroAssembler* masm_; |
223 | 224 |
224 // Which mode to generate code for (ASCII or UC16). | 225 // Which mode to generate code for (ASCII or UC16). |
225 Mode mode_; | 226 Mode mode_; |
226 | 227 |
227 // One greater than maximal register index actually used. | 228 // One greater than maximal register index actually used. |
228 int num_registers_; | 229 int num_registers_; |
229 | 230 |
230 // Number of registers to output at the end (the saved registers | 231 // Number of registers to output at the end (the saved registers |
231 // are always 0..num_saved_registers_-1) | 232 // are always 0..num_saved_registers_-1). |
232 int num_saved_registers_; | 233 int num_saved_registers_; |
233 | 234 |
234 // Labels used internally. | 235 // Labels used internally. |
235 Label entry_label_; | 236 Label entry_label_; |
236 Label start_label_; | 237 Label start_label_; |
237 Label success_label_; | 238 Label success_label_; |
238 Label backtrack_label_; | 239 Label backtrack_label_; |
239 Label exit_label_; | 240 Label exit_label_; |
240 Label check_preempt_label_; | 241 Label check_preempt_label_; |
241 Label stack_overflow_label_; | 242 Label stack_overflow_label_; |
| 243 Label internal_failure_label_; |
242 }; | 244 }; |
243 | 245 |
244 #endif // V8_INTERPRETED_REGEXP | 246 #endif // V8_INTERPRETED_REGEXP |
245 | 247 |
246 | 248 |
247 }} // namespace v8::internal | 249 }} // namespace v8::internal |
248 | 250 |
249 #endif // V8_MIPS_REGEXP_MACRO_ASSEMBLER_MIPS_H_ | 251 #endif // V8_MIPS_REGEXP_MACRO_ASSEMBLER_MIPS_H_ |
250 | 252 |
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