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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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377 | 377 |
378 // --------------------------------------------------------------------------- | 378 // --------------------------------------------------------------------------- |
379 // Smi tagging, untagging and operations on tagged smis. | 379 // Smi tagging, untagging and operations on tagged smis. |
380 | 380 |
381 // Support for constant splitting. | 381 // Support for constant splitting. |
382 bool IsUnsafeInt(const int32_t x); | 382 bool IsUnsafeInt(const int32_t x); |
383 void SafeMove(Register dst, Smi* src); | 383 void SafeMove(Register dst, Smi* src); |
384 void SafePush(Smi* src); | 384 void SafePush(Smi* src); |
385 | 385 |
386 void InitializeSmiConstantRegister() { | 386 void InitializeSmiConstantRegister() { |
387 movq(kSmiConstantRegister, | 387 movq(kSmiConstantRegister, Smi::FromInt(kSmiConstantRegisterValue), |
388 reinterpret_cast<uint64_t>(Smi::FromInt(kSmiConstantRegisterValue)), | |
389 RelocInfo::NONE64); | 388 RelocInfo::NONE64); |
390 } | 389 } |
391 | 390 |
392 // Conversions between tagged smi values and non-tagged integer values. | 391 // Conversions between tagged smi values and non-tagged integer values. |
393 | 392 |
394 // Tag an integer value. The result must be known to be a valid smi value. | 393 // Tag an integer value. The result must be known to be a valid smi value. |
395 // Only uses the low 32 bits of the src register. Sets the N and Z flags | 394 // Only uses the low 32 bits of the src register. Sets the N and Z flags |
396 // based on the value of the resulting smi. | 395 // based on the value of the resulting smi. |
397 void Integer32ToSmi(Register dst, Register src); | 396 void Integer32ToSmi(Register dst, Register src); |
398 | 397 |
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1586 masm->popfq(); \ | 1585 masm->popfq(); \ |
1587 } \ | 1586 } \ |
1588 masm-> | 1587 masm-> |
1589 #else | 1588 #else |
1590 #define ACCESS_MASM(masm) masm-> | 1589 #define ACCESS_MASM(masm) masm-> |
1591 #endif | 1590 #endif |
1592 | 1591 |
1593 } } // namespace v8::internal | 1592 } } // namespace v8::internal |
1594 | 1593 |
1595 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ | 1594 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ |
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