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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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54 | 54 |
55 // Architecture independent aliases. | 55 // Architecture independent aliases. |
56 typedef XmmRegister FpuRegister; | 56 typedef XmmRegister FpuRegister; |
57 const FpuRegister FpuTMP = XMM0; | 57 const FpuRegister FpuTMP = XMM0; |
58 const int kNumberOfFpuRegisters = kNumberOfXmmRegisters; | 58 const int kNumberOfFpuRegisters = kNumberOfXmmRegisters; |
59 const FpuRegister kNoFpuRegister = kNoXmmRegister; | 59 const FpuRegister kNoFpuRegister = kNoXmmRegister; |
60 | 60 |
61 | 61 |
62 // Register aliases. | 62 // Register aliases. |
63 const Register TMP = kNoRegister; // No scratch register used by assembler. | 63 const Register TMP = kNoRegister; // No scratch register used by assembler. |
| 64 const Register TMP2 = kNoRegister; // No second assembler scratch register. |
64 const Register CTX = ESI; // Caches current context in generated code. | 65 const Register CTX = ESI; // Caches current context in generated code. |
65 const Register PP = kNoRegister; // No object pool pointer. | 66 const Register PP = kNoRegister; // No object pool pointer. |
66 const Register SPREG = ESP; // Stack pointer register. | 67 const Register SPREG = ESP; // Stack pointer register. |
67 const Register FPREG = EBP; // Frame pointer register. | 68 const Register FPREG = EBP; // Frame pointer register. |
68 const Register ICREG = ECX; // IC data register. | 69 const Register ICREG = ECX; // IC data register. |
69 | 70 |
70 // Exception object is passed in this register to the catch handlers when an | 71 // Exception object is passed in this register to the catch handlers when an |
71 // exception is thrown. | 72 // exception is thrown. |
72 const Register kExceptionObjectReg = EAX; | 73 const Register kExceptionObjectReg = EAX; |
73 | 74 |
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138 }; | 139 }; |
139 | 140 |
140 | 141 |
141 // The largest multibyte nop we will emit. This could go up to 15 if it | 142 // The largest multibyte nop we will emit. This could go up to 15 if it |
142 // becomes important to us. | 143 // becomes important to us. |
143 const int MAX_NOP_SIZE = 8; | 144 const int MAX_NOP_SIZE = 8; |
144 | 145 |
145 } // namespace dart | 146 } // namespace dart |
146 | 147 |
147 #endif // VM_CONSTANTS_IA32_H_ | 148 #endif // VM_CONSTANTS_IA32_H_ |
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