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| 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2014, 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 ARM64 instructions if we are not generating a native | 5 // Declares a Simulator for ARM64 instructions if we are not generating a native |
| 6 // ARM64 binary. This Simulator allows us to run and debug ARM64 code generation | 6 // ARM64 binary. This Simulator allows us to run and debug ARM64 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 ARM64 HW platform. | 10 // on a ARM64 HW platform. |
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| 120 }; | 120 }; |
| 121 static uword RedirectExternalReference(uword function, | 121 static uword RedirectExternalReference(uword function, |
| 122 CallKind call_kind, | 122 CallKind call_kind, |
| 123 int argument_count); | 123 int argument_count); |
| 124 | 124 |
| 125 static uword FunctionForRedirect(uword redirect); | 125 static uword FunctionForRedirect(uword redirect); |
| 126 | 126 |
| 127 void Longjmp(uword pc, | 127 void Longjmp(uword pc, |
| 128 uword sp, | 128 uword sp, |
| 129 uword fp, | 129 uword fp, |
| 130 uword pp, | |
| 131 RawObject* raw_exception, | 130 RawObject* raw_exception, |
| 132 RawObject* raw_stacktrace, | 131 RawObject* raw_stacktrace, |
| 133 Thread* thread); | 132 Thread* thread); |
| 134 | 133 |
| 135 private: | 134 private: |
| 136 // Known bad pc value to ensure that the simulator does not execute | 135 // Known bad pc value to ensure that the simulator does not execute |
| 137 // without being properly setup. | 136 // without being properly setup. |
| 138 static const uword kBadLR = -1; | 137 static const uword kBadLR = -1; |
| 139 // A pc value used to signal the simulator to stop execution. Generally | 138 // A pc value used to signal the simulator to stop execution. Generally |
| 140 // the lr is set to this value on transition from native C code to | 139 // the lr is set to this value on transition from native C code to |
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| 277 } | 276 } |
| 278 | 277 |
| 279 friend class SimulatorDebugger; | 278 friend class SimulatorDebugger; |
| 280 friend class SimulatorSetjmpBuffer; | 279 friend class SimulatorSetjmpBuffer; |
| 281 DISALLOW_COPY_AND_ASSIGN(Simulator); | 280 DISALLOW_COPY_AND_ASSIGN(Simulator); |
| 282 }; | 281 }; |
| 283 | 282 |
| 284 } // namespace dart | 283 } // namespace dart |
| 285 | 284 |
| 286 #endif // VM_SIMULATOR_ARM64_H_ | 285 #endif // VM_SIMULATOR_ARM64_H_ |
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