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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 // Declares a Simulator for MIPS instructions if we are not generating a native | 5 // Declares a Simulator for MIPS instructions if we are not generating a native |
| 6 // MIPS binary. This Simulator allows us to run and debug MIPS code generation | 6 // MIPS binary. This Simulator allows us to run and debug MIPS code generation |
| 7 // on regular desktop machines. | 7 // on regular desktop machines. |
| 8 // Dart calls into generated code by "calling" the InvokeDartCode stub, | 8 // Dart calls into generated code by "calling" the InvokeDartCode stub, |
| 9 // which will start execution in the Simulator or forwards to the real entry | 9 // which will start execution in the Simulator or forwards to the real entry |
| 10 // on a MIPS HW platform. | 10 // on a MIPS HW platform. |
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| 139 }; | 139 }; |
| 140 static uword RedirectExternalReference(uword function, | 140 static uword RedirectExternalReference(uword function, |
| 141 CallKind call_kind, | 141 CallKind call_kind, |
| 142 int argument_count); | 142 int argument_count); |
| 143 | 143 |
| 144 static uword FunctionForRedirect(uword redirect); | 144 static uword FunctionForRedirect(uword redirect); |
| 145 | 145 |
| 146 void Longjmp(uword pc, | 146 void Longjmp(uword pc, |
| 147 uword sp, | 147 uword sp, |
| 148 uword fp, | 148 uword fp, |
| 149 uword pp, | |
| 150 RawObject* raw_exception, | 149 RawObject* raw_exception, |
| 151 RawObject* raw_stacktrace, | 150 RawObject* raw_stacktrace, |
| 152 Thread* thread); | 151 Thread* thread); |
| 153 | 152 |
| 154 private: | 153 private: |
| 155 // A pc value used to signal the simulator to stop execution. Generally | 154 // A pc value used to signal the simulator to stop execution. Generally |
| 156 // the ra is set to this value on transition from native C code to | 155 // the ra is set to this value on transition from native C code to |
| 157 // simulated execution, so that the simulator can "return" to the native | 156 // simulated execution, so that the simulator can "return" to the native |
| 158 // C code. | 157 // C code. |
| 159 static const uword kEndSimulatingPC = -1; | 158 static const uword kEndSimulatingPC = -1; |
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| 262 } | 261 } |
| 263 | 262 |
| 264 friend class SimulatorDebugger; | 263 friend class SimulatorDebugger; |
| 265 friend class SimulatorSetjmpBuffer; | 264 friend class SimulatorSetjmpBuffer; |
| 266 DISALLOW_COPY_AND_ASSIGN(Simulator); | 265 DISALLOW_COPY_AND_ASSIGN(Simulator); |
| 267 }; | 266 }; |
| 268 | 267 |
| 269 } // namespace dart | 268 } // namespace dart |
| 270 | 269 |
| 271 #endif // VM_SIMULATOR_MIPS_H_ | 270 #endif // VM_SIMULATOR_MIPS_H_ |
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