| OLD | NEW |
| 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 ARM instructions if we are not generating a native | 5 // Declares a Simulator for ARM instructions if we are not generating a native |
| 6 // ARM binary. This Simulator allows us to run and debug ARM code generation on | 6 // ARM binary. This Simulator allows us to run and debug ARM code generation on |
| 7 // regular desktop machines. | 7 // 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 ARM HW platform. | 10 // on a ARM HW platform. |
| (...skipping 34 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 45 // The currently executing Simulator instance, which is associated to the | 45 // The currently executing Simulator instance, which is associated to the |
| 46 // current isolate | 46 // current isolate |
| 47 static Simulator* Current(); | 47 static Simulator* Current(); |
| 48 | 48 |
| 49 // Accessors for register state. Reading the pc value adheres to the ARM | 49 // Accessors for register state. Reading the pc value adheres to the ARM |
| 50 // architecture specification and is off by 8 from the currently executing | 50 // architecture specification and is off by 8 from the currently executing |
| 51 // instruction. | 51 // instruction. |
| 52 void set_register(Register reg, int32_t value); | 52 void set_register(Register reg, int32_t value); |
| 53 int32_t get_register(Register reg) const; | 53 int32_t get_register(Register reg) const; |
| 54 | 54 |
| 55 int32_t get_sp() const { | 55 int32_t get_sp() const { return get_register(SPREG); } |
| 56 return get_register(SPREG); | |
| 57 } | |
| 58 | 56 |
| 59 // Special case of set_register and get_register to access the raw PC value. | 57 // Special case of set_register and get_register to access the raw PC value. |
| 60 void set_pc(int32_t value); | 58 void set_pc(int32_t value); |
| 61 int32_t get_pc() const; | 59 int32_t get_pc() const; |
| 62 | 60 |
| 63 // Accessors for VFP register state. | 61 // Accessors for VFP register state. |
| 64 void set_sregister(SRegister reg, float value); | 62 void set_sregister(SRegister reg, float value); |
| 65 float get_sregister(SRegister reg) const; | 63 float get_sregister(SRegister reg) const; |
| 66 void set_dregister(DRegister reg, double value); | 64 void set_dregister(DRegister reg, double value); |
| 67 double get_dregister(DRegister reg) const; | 65 double get_dregister(DRegister reg) const; |
| (...skipping 102 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 170 uint64_t icount_; | 168 uint64_t icount_; |
| 171 static int32_t flag_stop_sim_at_; | 169 static int32_t flag_stop_sim_at_; |
| 172 SimulatorSetjmpBuffer* last_setjmp_buffer_; | 170 SimulatorSetjmpBuffer* last_setjmp_buffer_; |
| 173 uword top_exit_frame_info_; | 171 uword top_exit_frame_info_; |
| 174 | 172 |
| 175 // Registered breakpoints. | 173 // Registered breakpoints. |
| 176 Instr* break_pc_; | 174 Instr* break_pc_; |
| 177 int32_t break_instr_; | 175 int32_t break_instr_; |
| 178 | 176 |
| 179 // Illegal memory access support. | 177 // Illegal memory access support. |
| 180 static bool IsIllegalAddress(uword addr) { | 178 static bool IsIllegalAddress(uword addr) { return addr < 64 * 1024; } |
| 181 return addr < 64*1024; | |
| 182 } | |
| 183 void HandleIllegalAccess(uword addr, Instr* instr); | 179 void HandleIllegalAccess(uword addr, Instr* instr); |
| 184 | 180 |
| 185 // Handles a legal instruction that the simulator does not implement. | 181 // Handles a legal instruction that the simulator does not implement. |
| 186 void UnimplementedInstruction(Instr* instr); | 182 void UnimplementedInstruction(Instr* instr); |
| 187 | 183 |
| 188 // Unsupported instructions use Format to print an error and stop execution. | 184 // Unsupported instructions use Format to print an error and stop execution. |
| 189 void Format(Instr* instr, const char* format); | 185 void Format(Instr* instr, const char* format); |
| 190 | 186 |
| 191 // Checks if the current instruction should be executed based on its | 187 // Checks if the current instruction should be executed based on its |
| 192 // condition bits. | 188 // condition bits. |
| (...skipping 73 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 266 // Executes one instruction. | 262 // Executes one instruction. |
| 267 void InstructionDecode(Instr* instr); | 263 void InstructionDecode(Instr* instr); |
| 268 | 264 |
| 269 // Executes ARM instructions until the PC reaches kEndSimulatingPC. | 265 // Executes ARM instructions until the PC reaches kEndSimulatingPC. |
| 270 void Execute(); | 266 void Execute(); |
| 271 | 267 |
| 272 // Returns true if tracing of executed instructions is enabled. | 268 // Returns true if tracing of executed instructions is enabled. |
| 273 bool IsTracingExecution() const; | 269 bool IsTracingExecution() const; |
| 274 | 270 |
| 275 // Longjmp support for exceptions. | 271 // Longjmp support for exceptions. |
| 276 SimulatorSetjmpBuffer* last_setjmp_buffer() { | 272 SimulatorSetjmpBuffer* last_setjmp_buffer() { return last_setjmp_buffer_; } |
| 277 return last_setjmp_buffer_; | |
| 278 } | |
| 279 void set_last_setjmp_buffer(SimulatorSetjmpBuffer* buffer) { | 273 void set_last_setjmp_buffer(SimulatorSetjmpBuffer* buffer) { |
| 280 last_setjmp_buffer_ = buffer; | 274 last_setjmp_buffer_ = buffer; |
| 281 } | 275 } |
| 282 | 276 |
| 283 friend class SimulatorDebugger; | 277 friend class SimulatorDebugger; |
| 284 friend class SimulatorSetjmpBuffer; | 278 friend class SimulatorSetjmpBuffer; |
| 285 DISALLOW_COPY_AND_ASSIGN(Simulator); | 279 DISALLOW_COPY_AND_ASSIGN(Simulator); |
| 286 }; | 280 }; |
| 287 | 281 |
| 288 } // namespace dart | 282 } // namespace dart |
| 289 | 283 |
| 290 #endif // RUNTIME_VM_SIMULATOR_ARM_H_ | 284 #endif // RUNTIME_VM_SIMULATOR_ARM_H_ |
| OLD | NEW |