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1 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. |
2 // All Rights Reserved. | 2 // All Rights Reserved. |
3 // | 3 // |
4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
5 // modification, are permitted provided that the following conditions | 5 // modification, are permitted provided that the following conditions |
6 // are met: | 6 // are met: |
7 // | 7 // |
8 // - Redistributions of source code must retain the above copyright notice, | 8 // - Redistributions of source code must retain the above copyright notice, |
9 // this list of conditions and the following disclaimer. | 9 // this list of conditions and the following disclaimer. |
10 // | 10 // |
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112 | 112 |
113 static const int kNumRegisters = Code::kAfterLast; | 113 static const int kNumRegisters = Code::kAfterLast; |
114 | 114 |
115 static Register from_code(int code) { | 115 static Register from_code(int code) { |
116 DCHECK(code >= 0); | 116 DCHECK(code >= 0); |
117 DCHECK(code < kNumRegisters); | 117 DCHECK(code < kNumRegisters); |
118 Register r = {code}; | 118 Register r = {code}; |
119 return r; | 119 return r; |
120 } | 120 } |
121 const char* ToString(); | 121 const char* ToString(); |
122 bool IsAllocatable() const; | 122 bool IsAllocatable(RegisterConfiguration::CompilerSelector compiler = |
| 123 RegisterConfiguration::CRANKSHAFT) const; |
123 bool is_valid() const { return 0 <= reg_code && reg_code < kNumRegisters; } | 124 bool is_valid() const { return 0 <= reg_code && reg_code < kNumRegisters; } |
124 bool is(Register reg) const { return reg_code == reg.reg_code; } | 125 bool is(Register reg) const { return reg_code == reg.reg_code; } |
125 int code() const { | 126 int code() const { |
126 DCHECK(is_valid()); | 127 DCHECK(is_valid()); |
127 return reg_code; | 128 return reg_code; |
128 } | 129 } |
129 int bit() const { | 130 int bit() const { |
130 DCHECK(is_valid()); | 131 DCHECK(is_valid()); |
131 return 1 << reg_code; | 132 return 1 << reg_code; |
132 } | 133 } |
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155 #undef REGISTER_CODE | 156 #undef REGISTER_CODE |
156 kAfterLast, | 157 kAfterLast, |
157 kCode_no_reg = -1 | 158 kCode_no_reg = -1 |
158 }; | 159 }; |
159 | 160 |
160 static const int kMaxNumRegisters = Code::kAfterLast; | 161 static const int kMaxNumRegisters = Code::kAfterLast; |
161 | 162 |
162 static const int kSizeInBytes = 4; | 163 static const int kSizeInBytes = 4; |
163 | 164 |
164 const char* ToString(); | 165 const char* ToString(); |
165 bool IsAllocatable() const; | 166 bool IsAllocatable(RegisterConfiguration::CompilerSelector compiler = |
| 167 RegisterConfiguration::CRANKSHAFT) const; |
166 bool is_valid() const { return 0 <= reg_code && reg_code < 32; } | 168 bool is_valid() const { return 0 <= reg_code && reg_code < 32; } |
167 bool is(SwVfpRegister reg) const { return reg_code == reg.reg_code; } | 169 bool is(SwVfpRegister reg) const { return reg_code == reg.reg_code; } |
168 int code() const { | 170 int code() const { |
169 DCHECK(is_valid()); | 171 DCHECK(is_valid()); |
170 return reg_code; | 172 return reg_code; |
171 } | 173 } |
172 int bit() const { | 174 int bit() const { |
173 DCHECK(is_valid()); | 175 DCHECK(is_valid()); |
174 return 1 << reg_code; | 176 return 1 << reg_code; |
175 } | 177 } |
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202 | 204 |
203 inline static int NumRegisters(); | 205 inline static int NumRegisters(); |
204 | 206 |
205 // A few double registers are reserved: one as a scratch register and one to | 207 // A few double registers are reserved: one as a scratch register and one to |
206 // hold 0.0, that does not fit in the immediate field of vmov instructions. | 208 // hold 0.0, that does not fit in the immediate field of vmov instructions. |
207 // d14: 0.0 | 209 // d14: 0.0 |
208 // d15: scratch register. | 210 // d15: scratch register. |
209 static const int kSizeInBytes = 8; | 211 static const int kSizeInBytes = 8; |
210 | 212 |
211 const char* ToString(); | 213 const char* ToString(); |
212 bool IsAllocatable() const; | 214 bool IsAllocatable(RegisterConfiguration::CompilerSelector compiler = |
| 215 RegisterConfiguration::CRANKSHAFT) const; |
213 bool is_valid() const { return 0 <= reg_code && reg_code < kMaxNumRegisters; } | 216 bool is_valid() const { return 0 <= reg_code && reg_code < kMaxNumRegisters; } |
214 bool is(DwVfpRegister reg) const { return reg_code == reg.reg_code; } | 217 bool is(DwVfpRegister reg) const { return reg_code == reg.reg_code; } |
215 int code() const { | 218 int code() const { |
216 DCHECK(is_valid()); | 219 DCHECK(is_valid()); |
217 return reg_code; | 220 return reg_code; |
218 } | 221 } |
219 int bit() const { | 222 int bit() const { |
220 DCHECK(is_valid()); | 223 DCHECK(is_valid()); |
221 return 1 << reg_code; | 224 return 1 << reg_code; |
222 } | 225 } |
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1691 explicit EnsureSpace(Assembler* assembler) { | 1694 explicit EnsureSpace(Assembler* assembler) { |
1692 assembler->CheckBuffer(); | 1695 assembler->CheckBuffer(); |
1693 } | 1696 } |
1694 }; | 1697 }; |
1695 | 1698 |
1696 | 1699 |
1697 } // namespace internal | 1700 } // namespace internal |
1698 } // namespace v8 | 1701 } // namespace v8 |
1699 | 1702 |
1700 #endif // V8_ARM_ASSEMBLER_ARM_H_ | 1703 #endif // V8_ARM_ASSEMBLER_ARM_H_ |
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