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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 #ifndef VM_CONSTANTS_IA32_H_ | 5 #ifndef VM_CONSTANTS_IA32_H_ |
| 6 #define VM_CONSTANTS_IA32_H_ | 6 #define VM_CONSTANTS_IA32_H_ |
| 7 | 7 |
| 8 #include "platform/assert.h" | 8 #include "platform/assert.h" |
| 9 | 9 |
| 10 namespace dart { | 10 namespace dart { |
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| 61 const Register TMP = kNoRegister; // No scratch register used by assembler. | 61 const Register TMP = kNoRegister; // No scratch register used by assembler. |
| 62 const Register TMP2 = kNoRegister; // No second assembler scratch register. | 62 const Register TMP2 = kNoRegister; // No second assembler scratch register. |
| 63 const Register CTX = EDI; // Location of current context at method entry. | 63 const Register CTX = EDI; // Location of current context at method entry. |
| 64 const Register CODE_REG = EDI; | 64 const Register CODE_REG = EDI; |
| 65 const Register PP = kNoRegister; // No object pool pointer. | 65 const Register PP = kNoRegister; // No object pool pointer. |
| 66 const Register SPREG = ESP; // Stack pointer register. | 66 const Register SPREG = ESP; // Stack pointer register. |
| 67 const Register FPREG = EBP; // Frame pointer register. | 67 const Register FPREG = EBP; // Frame pointer register. |
| 68 const Register ICREG = ECX; // IC data register. | 68 const Register ICREG = ECX; // IC data register. |
| 69 const Register ARGS_DESC_REG = EDX; // Arguments descriptor register. | 69 const Register ARGS_DESC_REG = EDX; // Arguments descriptor register. |
| 70 const Register THR = ESI; // Caches current thread in generated code. | 70 const Register THR = ESI; // Caches current thread in generated code. |
| 71 | 71 const Register CALLEE_SAVED_TEMP = EBX; |
| 72 const Register CALLEE_SAVED_TEMP2 = EDI; |
| 72 | 73 |
| 73 // Exception object is passed in this register to the catch handlers when an | 74 // Exception object is passed in this register to the catch handlers when an |
| 74 // exception is thrown. | 75 // exception is thrown. |
| 75 const Register kExceptionObjectReg = EAX; | 76 const Register kExceptionObjectReg = EAX; |
| 76 | 77 |
| 77 // Stack trace object is passed in this register to the catch handlers when | 78 // Stack trace object is passed in this register to the catch handlers when |
| 78 // an exception is thrown. | 79 // an exception is thrown. |
| 79 const Register kStackTraceObjectReg = EDX; | 80 const Register kStackTraceObjectReg = EDX; |
| 80 | 81 |
| 81 | 82 |
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| 153 }; | 154 }; |
| 154 | 155 |
| 155 | 156 |
| 156 // The largest multibyte nop we will emit. This could go up to 15 if it | 157 // The largest multibyte nop we will emit. This could go up to 15 if it |
| 157 // becomes important to us. | 158 // becomes important to us. |
| 158 const int MAX_NOP_SIZE = 8; | 159 const int MAX_NOP_SIZE = 8; |
| 159 | 160 |
| 160 } // namespace dart | 161 } // namespace dart |
| 161 | 162 |
| 162 #endif // VM_CONSTANTS_IA32_H_ | 163 #endif // VM_CONSTANTS_IA32_H_ |
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