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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_MIPS_H_ | 5 #ifndef VM_CONSTANTS_MIPS_H_ |
6 #define VM_CONSTANTS_MIPS_H_ | 6 #define VM_CONSTANTS_MIPS_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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168 const FRegister STMP2 = F19; | 168 const FRegister STMP2 = F19; |
169 | 169 |
170 // Architecture independent aliases. | 170 // Architecture independent aliases. |
171 typedef DRegister FpuRegister; | 171 typedef DRegister FpuRegister; |
172 const FpuRegister FpuTMP = DTMP; | 172 const FpuRegister FpuTMP = DTMP; |
173 const int kNumberOfFpuRegisters = kNumberOfDRegisters; | 173 const int kNumberOfFpuRegisters = kNumberOfDRegisters; |
174 const FpuRegister kNoFpuRegister = kNoDRegister; | 174 const FpuRegister kNoFpuRegister = kNoDRegister; |
175 | 175 |
176 | 176 |
177 // Register aliases. | 177 // Register aliases. |
178 const Register TMP1 = AT; // Used as scratch register by assembler. | 178 const Register TMP = AT; // Used as scratch register by assembler. |
179 const Register TMP = TMP1; // Arch independent flow graph compiler needs a | |
180 // Register called TMP. | |
181 const Register CTX = S6; // Caches current context in generated code. | 179 const Register CTX = S6; // Caches current context in generated code. |
182 const Register PP = S7; // Caches object pool pointer in generated code. | 180 const Register PP = S7; // Caches object pool pointer in generated code. |
183 const Register SPREG = SP; // Stack pointer register. | 181 const Register SPREG = SP; // Stack pointer register. |
184 const Register FPREG = FP; // Frame pointer register. | 182 const Register FPREG = FP; // Frame pointer register. |
185 const Register ICREG = S5; // IC data register. | 183 const Register ICREG = S5; // IC data register. |
186 | 184 |
187 // The code that generates a comparison can be far away from the code that | 185 // The code that generates a comparison can be far away from the code that |
188 // generates the branch that uses the result of that comparison. In this case, | 186 // generates the branch that uses the result of that comparison. In this case, |
189 // CMPRES1 and CMPRES2 are used for the results of the comparison. We need two | 187 // CMPRES1 and CMPRES2 are used for the results of the comparison. We need two |
190 // since TMP is clobbered by a far branch. | 188 // since TMP is clobbered by a far branch. |
191 const Register CMPRES1 = T8; | 189 const Register CMPRES1 = T8; |
192 const Register CMPRES2 = T9; | 190 const Register CMPRES2 = T9; |
193 const Register CMPRES = CMPRES1; | |
194 | 191 |
195 // Exception object is passed in this register to the catch handlers when an | 192 // Exception object is passed in this register to the catch handlers when an |
196 // exception is thrown. | 193 // exception is thrown. |
197 const Register kExceptionObjectReg = V0; | 194 const Register kExceptionObjectReg = V0; |
198 | 195 |
199 // Stack trace object is passed in this register to the catch handlers when | 196 // Stack trace object is passed in this register to the catch handlers when |
200 // an exception is thrown. | 197 // an exception is thrown. |
201 const Register kStackTraceObjectReg = V1; | 198 const Register kStackTraceObjectReg = V1; |
202 | 199 |
203 | 200 |
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615 #endif // defined(DEBUG) | 612 #endif // defined(DEBUG) |
616 | 613 |
617 private: | 614 private: |
618 DISALLOW_ALLOCATION(); | 615 DISALLOW_ALLOCATION(); |
619 DISALLOW_IMPLICIT_CONSTRUCTORS(Instr); | 616 DISALLOW_IMPLICIT_CONSTRUCTORS(Instr); |
620 }; | 617 }; |
621 | 618 |
622 } // namespace dart | 619 } // namespace dart |
623 | 620 |
624 #endif // VM_CONSTANTS_MIPS_H_ | 621 #endif // VM_CONSTANTS_MIPS_H_ |
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