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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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| 384 // --------------------------------------------------------------------------- | 384 // --------------------------------------------------------------------------- |
| 385 // Smi tagging, untagging and operations on tagged smis. | 385 // Smi tagging, untagging and operations on tagged smis. |
| 386 | 386 |
| 387 // Support for constant splitting. | 387 // Support for constant splitting. |
| 388 bool IsUnsafeInt(const int32_t x); | 388 bool IsUnsafeInt(const int32_t x); |
| 389 void SafeMove(Register dst, Smi* src); | 389 void SafeMove(Register dst, Smi* src); |
| 390 void SafePush(Smi* src); | 390 void SafePush(Smi* src); |
| 391 | 391 |
| 392 void InitializeSmiConstantRegister() { | 392 void InitializeSmiConstantRegister() { |
| 393 Move(kSmiConstantRegister, Smi::FromInt(kSmiConstantRegisterValue), | 393 Move(kSmiConstantRegister, Smi::FromInt(kSmiConstantRegisterValue), |
| 394 RelocInfo::NONE64); | 394 Assembler::RelocInfoNone()); |
| 395 } | 395 } |
| 396 | 396 |
| 397 // Conversions between tagged smi values and non-tagged integer values. | 397 // Conversions between tagged smi values and non-tagged integer values. |
| 398 | 398 |
| 399 // Tag an integer value. The result must be known to be a valid smi value. | 399 // Tag an integer value. The result must be known to be a valid smi value. |
| 400 // Only uses the low 32 bits of the src register. Sets the N and Z flags | 400 // Only uses the low 32 bits of the src register. Sets the N and Z flags |
| 401 // based on the value of the resulting smi. | 401 // based on the value of the resulting smi. |
| 402 void Integer32ToSmi(Register dst, Register src); | 402 void Integer32ToSmi(Register dst, Register src); |
| 403 | 403 |
| 404 // Stores an integer32 value into a memory field that already holds a smi. | 404 // Stores an integer32 value into a memory field that already holds a smi. |
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| 870 void Jump(ExternalReference ext); | 870 void Jump(ExternalReference ext); |
| 871 void Jump(Handle<Code> code_object, RelocInfo::Mode rmode); | 871 void Jump(Handle<Code> code_object, RelocInfo::Mode rmode); |
| 872 | 872 |
| 873 void Call(Address destination, RelocInfo::Mode rmode); | 873 void Call(Address destination, RelocInfo::Mode rmode); |
| 874 void Call(ExternalReference ext); | 874 void Call(ExternalReference ext); |
| 875 void Call(Handle<Code> code_object, | 875 void Call(Handle<Code> code_object, |
| 876 RelocInfo::Mode rmode, | 876 RelocInfo::Mode rmode, |
| 877 TypeFeedbackId ast_id = TypeFeedbackId::None()); | 877 TypeFeedbackId ast_id = TypeFeedbackId::None()); |
| 878 | 878 |
| 879 // The size of the code generated for different call instructions. | 879 // The size of the code generated for different call instructions. |
| 880 int CallSize(Address destination, RelocInfo::Mode rmode) { | 880 int CallSize(Address destination) { |
| 881 return kCallSequenceLength; | 881 return kCallSequenceLength; |
| 882 } | 882 } |
| 883 int CallSize(ExternalReference ext); | 883 int CallSize(ExternalReference ext); |
| 884 int CallSize(Handle<Code> code_object) { | 884 int CallSize(Handle<Code> code_object) { |
| 885 // Code calls use 32-bit relative addressing. | 885 // Code calls use 32-bit relative addressing. |
| 886 return kShortCallInstructionLength; | 886 return kShortCallInstructionLength; |
| 887 } | 887 } |
| 888 int CallSize(Register target) { | 888 int CallSize(Register target) { |
| 889 // Opcode: REX_opt FF /2 m64 | 889 // Opcode: REX_opt FF /2 m64 |
| 890 return (target.high_bit() != 0) ? 3 : 2; | 890 return (target.high_bit() != 0) ? 3 : 2; |
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| 1615 masm->popfq(); \ | 1615 masm->popfq(); \ |
| 1616 } \ | 1616 } \ |
| 1617 masm-> | 1617 masm-> |
| 1618 #else | 1618 #else |
| 1619 #define ACCESS_MASM(masm) masm-> | 1619 #define ACCESS_MASM(masm) masm-> |
| 1620 #endif | 1620 #endif |
| 1621 | 1621 |
| 1622 } } // namespace v8::internal | 1622 } } // namespace v8::internal |
| 1623 | 1623 |
| 1624 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ | 1624 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ |
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