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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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 MIPS instructions if we are not generating a native | 6 // Declares a Simulator for MIPS instructions if we are not generating a native |
| 7 // MIPS binary. This Simulator allows us to run and debug MIPS code generation | 7 // MIPS binary. This Simulator allows us to run and debug MIPS code generation |
| 8 // on regular desktop machines. | 8 // on 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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| 63 // calculates the stack limit based on that value. | 63 // calculates the stack limit based on that value. |
| 64 // NOTE: The check for overflow is not safe as there is no guarantee that the | 64 // NOTE: The check for overflow is not safe as there is no guarantee that the |
| 65 // running thread has its stack in all memory up to address 0x00000000. | 65 // running thread has its stack in all memory up to address 0x00000000. |
| 66 #define GENERATED_CODE_STACK_LIMIT(limit) \ | 66 #define GENERATED_CODE_STACK_LIMIT(limit) \ |
| 67 (reinterpret_cast<uintptr_t>(this) >= limit ? \ | 67 (reinterpret_cast<uintptr_t>(this) >= limit ? \ |
| 68 reinterpret_cast<uintptr_t>(this) - limit : 0) | 68 reinterpret_cast<uintptr_t>(this) - limit : 0) |
| 69 | 69 |
| 70 #else // !defined(USE_SIMULATOR) | 70 #else // !defined(USE_SIMULATOR) |
| 71 // Running with a simulator. | 71 // Running with a simulator. |
| 72 | 72 |
| 73 #include "src/assembler.h" |
| 73 #include "src/hashmap.h" | 74 #include "src/hashmap.h" |
| 74 #include "src/assembler.h" | |
| 75 | 75 |
| 76 namespace v8 { | 76 namespace v8 { |
| 77 namespace internal { | 77 namespace internal { |
| 78 | 78 |
| 79 // ----------------------------------------------------------------------------- | 79 // ----------------------------------------------------------------------------- |
| 80 // Utility functions | 80 // Utility functions |
| 81 | 81 |
| 82 class CachePage { | 82 class CachePage { |
| 83 public: | 83 public: |
| 84 static const int LINE_VALID = 0; | 84 static const int LINE_VALID = 0; |
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| 407 | 407 |
| 408 static inline void UnregisterCTryCatch() { | 408 static inline void UnregisterCTryCatch() { |
| 409 Simulator::current(Isolate::Current())->PopAddress(); | 409 Simulator::current(Isolate::Current())->PopAddress(); |
| 410 } | 410 } |
| 411 }; | 411 }; |
| 412 | 412 |
| 413 } } // namespace v8::internal | 413 } } // namespace v8::internal |
| 414 | 414 |
| 415 #endif // !defined(USE_SIMULATOR) | 415 #endif // !defined(USE_SIMULATOR) |
| 416 #endif // V8_MIPS_SIMULATOR_MIPS_H_ | 416 #endif // V8_MIPS_SIMULATOR_MIPS_H_ |
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