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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, |
149 RawObject* raw_exception, | 150 RawObject* raw_exception, |
150 RawObject* raw_stacktrace, | 151 RawObject* raw_stacktrace, |
151 Thread* thread); | 152 Thread* thread); |
152 | 153 |
153 private: | 154 private: |
154 // A pc value used to signal the simulator to stop execution. Generally | 155 // A pc value used to signal the simulator to stop execution. Generally |
155 // the ra is set to this value on transition from native C code to | 156 // the ra is set to this value on transition from native C code to |
156 // simulated execution, so that the simulator can "return" to the native | 157 // simulated execution, so that the simulator can "return" to the native |
157 // C code. | 158 // C code. |
158 static const uword kEndSimulatingPC = -1; | 159 static const uword kEndSimulatingPC = -1; |
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261 } | 262 } |
262 | 263 |
263 friend class SimulatorDebugger; | 264 friend class SimulatorDebugger; |
264 friend class SimulatorSetjmpBuffer; | 265 friend class SimulatorSetjmpBuffer; |
265 DISALLOW_COPY_AND_ASSIGN(Simulator); | 266 DISALLOW_COPY_AND_ASSIGN(Simulator); |
266 }; | 267 }; |
267 | 268 |
268 } // namespace dart | 269 } // namespace dart |
269 | 270 |
270 #endif // VM_SIMULATOR_MIPS_H_ | 271 #endif // VM_SIMULATOR_MIPS_H_ |
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