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1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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255 | 255 |
256 void set_reg(Register new_reg) { | 256 void set_reg(Register new_reg) { |
257 ASSERT(is_register()); | 257 ASSERT(is_register()); |
258 value_ = value_ & ~DataField::mask(); | 258 value_ = value_ & ~DataField::mask(); |
259 value_ = value_ | DataField::encode(new_reg.code_); | 259 value_ = value_ | DataField::encode(new_reg.code_); |
260 } | 260 } |
261 | 261 |
262 // Encode type, copied, synced and data in one 32 bit integer. | 262 // Encode type, copied, synced and data in one 32 bit integer. |
263 uint32_t value_; | 263 uint32_t value_; |
264 | 264 |
| 265 // Declare BitFields with template parameters <type, start, size>. |
265 class TypeField: public BitField<Type, 0, 3> {}; | 266 class TypeField: public BitField<Type, 0, 3> {}; |
266 class CopiedField: public BitField<bool, 3, 1> {}; | 267 class CopiedField: public BitField<bool, 3, 1> {}; |
267 class SyncedField: public BitField<bool, 4, 1> {}; | 268 class SyncedField: public BitField<bool, 4, 1> {}; |
268 class UntaggedInt32Field: public BitField<bool, 5, 1> {}; | 269 class UntaggedInt32Field: public BitField<bool, 5, 1> {}; |
269 class NumberInfoField: public BitField<int, 6, 4> {}; | 270 class NumberInfoField: public BitField<int, 6, 6> {}; |
270 class DataField: public BitField<uint32_t, 10, 32 - 10> {}; | 271 class DataField: public BitField<uint32_t, 12, 32 - 12> {}; |
271 | 272 |
272 friend class VirtualFrame; | 273 friend class VirtualFrame; |
273 }; | 274 }; |
274 | 275 |
275 } } // namespace v8::internal | 276 } } // namespace v8::internal |
276 | 277 |
277 #endif // V8_FRAME_ELEMENT_H_ | 278 #endif // V8_FRAME_ELEMENT_H_ |
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