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1 // Copyright 2011 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 |
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216 void Format(Instruction* instr, const char* format); | 216 void Format(Instruction* instr, const char* format); |
217 | 217 |
218 // Checks if the current instruction should be executed based on its | 218 // Checks if the current instruction should be executed based on its |
219 // condition bits. | 219 // condition bits. |
220 bool ConditionallyExecute(Instruction* instr); | 220 bool ConditionallyExecute(Instruction* instr); |
221 | 221 |
222 // Helper functions to set the conditional flags in the architecture state. | 222 // Helper functions to set the conditional flags in the architecture state. |
223 void SetNZFlags(int32_t val); | 223 void SetNZFlags(int32_t val); |
224 void SetCFlag(bool val); | 224 void SetCFlag(bool val); |
225 void SetVFlag(bool val); | 225 void SetVFlag(bool val); |
226 bool CarryFrom(int32_t left, int32_t right); | 226 bool CarryFrom(int32_t left, int32_t right, int32_t carry = 0); |
227 bool BorrowFrom(int32_t left, int32_t right); | 227 bool BorrowFrom(int32_t left, int32_t right); |
228 bool OverflowFrom(int32_t alu_out, | 228 bool OverflowFrom(int32_t alu_out, |
229 int32_t left, | 229 int32_t left, |
230 int32_t right, | 230 int32_t right, |
231 bool addition); | 231 bool addition); |
232 | 232 |
| 233 inline int GetCarry() { |
| 234 return c_flag_ ? 1 : 0; |
| 235 }; |
| 236 |
233 // Support for VFP. | 237 // Support for VFP. |
234 void Compute_FPSCR_Flags(double val1, double val2); | 238 void Compute_FPSCR_Flags(double val1, double val2); |
235 void Copy_FPSCR_to_APSR(); | 239 void Copy_FPSCR_to_APSR(); |
236 | 240 |
237 // Helper functions to decode common "addressing" modes | 241 // Helper functions to decode common "addressing" modes |
238 int32_t GetShiftRm(Instruction* instr, bool* carry_out); | 242 int32_t GetShiftRm(Instruction* instr, bool* carry_out); |
239 int32_t GetImm(Instruction* instr, bool* carry_out); | 243 int32_t GetImm(Instruction* instr, bool* carry_out); |
240 void ProcessPUW(Instruction* instr, | 244 void ProcessPUW(Instruction* instr, |
241 int num_regs, | 245 int num_regs, |
242 int operand_size, | 246 int operand_size, |
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405 | 409 |
406 static inline void UnregisterCTryCatch() { | 410 static inline void UnregisterCTryCatch() { |
407 Simulator::current(Isolate::Current())->PopAddress(); | 411 Simulator::current(Isolate::Current())->PopAddress(); |
408 } | 412 } |
409 }; | 413 }; |
410 | 414 |
411 } } // namespace v8::internal | 415 } } // namespace v8::internal |
412 | 416 |
413 #endif // !defined(USE_SIMULATOR) | 417 #endif // !defined(USE_SIMULATOR) |
414 #endif // V8_ARM_SIMULATOR_ARM_H_ | 418 #endif // V8_ARM_SIMULATOR_ARM_H_ |
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