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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 | 5 |
| 6 // Declares a Simulator for ARM instructions if we are not generating a native | 6 // Declares a Simulator for ARM instructions if we are not generating a native |
| 7 // ARM binary. This Simulator allows us to run and debug ARM code generation on | 7 // ARM binary. This Simulator allows us to run and debug ARM code generation on |
| 8 // regular desktop machines. | 8 // regular desktop machines. |
| 9 // V8 calls into generated code by "calling" the CALL_GENERATED_CODE macro, | 9 // V8 calls into generated code by "calling" the CALL_GENERATED_CODE macro, |
| 10 // which will start execution in the Simulator or forwards to the real entry | 10 // which will start execution in the Simulator or forwards to the real entry |
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| 258 void SetVFlag(bool val); | 258 void SetVFlag(bool val); |
| 259 bool CarryFrom(int32_t left, int32_t right, int32_t carry = 0); | 259 bool CarryFrom(int32_t left, int32_t right, int32_t carry = 0); |
| 260 bool BorrowFrom(int32_t left, int32_t right); | 260 bool BorrowFrom(int32_t left, int32_t right); |
| 261 bool OverflowFrom(int32_t alu_out, | 261 bool OverflowFrom(int32_t alu_out, |
| 262 int32_t left, | 262 int32_t left, |
| 263 int32_t right, | 263 int32_t right, |
| 264 bool addition); | 264 bool addition); |
| 265 | 265 |
| 266 inline int GetCarry() { | 266 inline int GetCarry() { |
| 267 return c_flag_ ? 1 : 0; | 267 return c_flag_ ? 1 : 0; |
| 268 }; | 268 } |
| 269 | 269 |
| 270 // Support for VFP. | 270 // Support for VFP. |
| 271 void Compute_FPSCR_Flags(double val1, double val2); | 271 void Compute_FPSCR_Flags(double val1, double val2); |
| 272 void Copy_FPSCR_to_APSR(); | 272 void Copy_FPSCR_to_APSR(); |
| 273 inline double canonicalizeNaN(double value); | 273 inline double canonicalizeNaN(double value); |
| 274 | 274 |
| 275 // Helper functions to decode common "addressing" modes | 275 // Helper functions to decode common "addressing" modes |
| 276 int32_t GetShiftRm(Instruction* instr, bool* carry_out); | 276 int32_t GetShiftRm(Instruction* instr, bool* carry_out); |
| 277 int32_t GetImm(Instruction* instr, bool* carry_out); | 277 int32_t GetImm(Instruction* instr, bool* carry_out); |
| 278 int32_t ProcessPU(Instruction* instr, | 278 int32_t ProcessPU(Instruction* instr, |
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| 460 | 460 |
| 461 static inline void UnregisterCTryCatch() { | 461 static inline void UnregisterCTryCatch() { |
| 462 Simulator::current(Isolate::Current())->PopAddress(); | 462 Simulator::current(Isolate::Current())->PopAddress(); |
| 463 } | 463 } |
| 464 }; | 464 }; |
| 465 | 465 |
| 466 } } // namespace v8::internal | 466 } } // namespace v8::internal |
| 467 | 467 |
| 468 #endif // !defined(USE_SIMULATOR) | 468 #endif // !defined(USE_SIMULATOR) |
| 469 #endif // V8_ARM_SIMULATOR_ARM_H_ | 469 #endif // V8_ARM_SIMULATOR_ARM_H_ |
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