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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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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561 // Support for arguments.length and arguments[?]. | 561 // Support for arguments.length and arguments[?]. |
562 void GenerateArgumentsLength(ZoneList<Expression*>* args); | 562 void GenerateArgumentsLength(ZoneList<Expression*>* args); |
563 void GenerateArguments(ZoneList<Expression*>* args); | 563 void GenerateArguments(ZoneList<Expression*>* args); |
564 | 564 |
565 // Support for accessing the class and value fields of an object. | 565 // Support for accessing the class and value fields of an object. |
566 void GenerateClassOf(ZoneList<Expression*>* args); | 566 void GenerateClassOf(ZoneList<Expression*>* args); |
567 void GenerateValueOf(ZoneList<Expression*>* args); | 567 void GenerateValueOf(ZoneList<Expression*>* args); |
568 void GenerateSetValueOf(ZoneList<Expression*>* args); | 568 void GenerateSetValueOf(ZoneList<Expression*>* args); |
569 | 569 |
570 // Fast support for charCodeAt(n). | 570 // Fast support for charCodeAt(n). |
571 void GenerateFastCharCodeAt(ZoneList<Expression*>* args); | 571 void GenerateStringCharCodeAt(ZoneList<Expression*>* args); |
572 | 572 |
573 // Fast support for string.charAt(n) and string[n]. | 573 // Fast support for string.charAt(n) and string[n]. |
574 void GenerateCharFromCode(ZoneList<Expression*>* args); | 574 void GenerateStringCharFromCode(ZoneList<Expression*>* args); |
| 575 |
| 576 // Fast support for string.charAt(n) and string[n]. |
| 577 void GenerateStringCharAt(ZoneList<Expression*>* args); |
575 | 578 |
576 // Fast support for object equality testing. | 579 // Fast support for object equality testing. |
577 void GenerateObjectEquals(ZoneList<Expression*>* args); | 580 void GenerateObjectEquals(ZoneList<Expression*>* args); |
578 | 581 |
579 void GenerateLog(ZoneList<Expression*>* args); | 582 void GenerateLog(ZoneList<Expression*>* args); |
580 | 583 |
581 void GenerateGetFramePointer(ZoneList<Expression*>* args); | 584 void GenerateGetFramePointer(ZoneList<Expression*>* args); |
582 | 585 |
583 // Fast support for Math.random(). | 586 // Fast support for Math.random(). |
584 void GenerateRandomHeapNumber(ZoneList<Expression*>* args); | 587 void GenerateRandomHeapNumber(ZoneList<Expression*>* args); |
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836 | 839 |
837 virtual int GetCodeKind() { return Code::BINARY_OP_IC; } | 840 virtual int GetCodeKind() { return Code::BINARY_OP_IC; } |
838 | 841 |
839 virtual InlineCacheState GetICState() { | 842 virtual InlineCacheState GetICState() { |
840 return BinaryOpIC::ToState(runtime_operands_type_); | 843 return BinaryOpIC::ToState(runtime_operands_type_); |
841 } | 844 } |
842 }; | 845 }; |
843 | 846 |
844 class StringHelper : public AllStatic { | 847 class StringHelper : public AllStatic { |
845 public: | 848 public: |
846 // Generates fast code for getting a char code out of a string | |
847 // object at the given index. May bail out for four reasons (in the | |
848 // listed order): | |
849 // * Receiver is not a string (receiver_not_string label). | |
850 // * Index is not a smi (index_not_smi label). | |
851 // * Index is out of range (index_out_of_range). | |
852 // * Some other reason (slow_case label). In this case it's | |
853 // guaranteed that the above conditions are not violated, | |
854 // e.g. it's safe to assume the receiver is a string and the | |
855 // index is a non-negative smi < length. | |
856 // When successful, object, index, and scratch are clobbered. | |
857 // Otherwise, scratch and result are clobbered. | |
858 static void GenerateFastCharCodeAt(MacroAssembler* masm, | |
859 Register object, | |
860 Register index, | |
861 Register scratch, | |
862 Register result, | |
863 Label* receiver_not_string, | |
864 Label* index_not_smi, | |
865 Label* index_out_of_range, | |
866 Label* slow_case); | |
867 | |
868 // Generates code for creating a one-char string from the given char | |
869 // code. May do a runtime call, so any register can be clobbered | |
870 // and, if the given invoke flag specifies a call, an internal frame | |
871 // is required. In tail call mode the result must be rax register. | |
872 static void GenerateCharFromCode(MacroAssembler* masm, | |
873 Register code, | |
874 Register result, | |
875 Register scratch, | |
876 InvokeFlag flag); | |
877 | |
878 // Generate code for copying characters using a simple loop. This should only | 849 // Generate code for copying characters using a simple loop. This should only |
879 // be used in places where the number of characters is small and the | 850 // be used in places where the number of characters is small and the |
880 // additional setup and checking in GenerateCopyCharactersREP adds too much | 851 // additional setup and checking in GenerateCopyCharactersREP adds too much |
881 // overhead. Copying of overlapping regions is not supported. | 852 // overhead. Copying of overlapping regions is not supported. |
882 static void GenerateCopyCharacters(MacroAssembler* masm, | 853 static void GenerateCopyCharacters(MacroAssembler* masm, |
883 Register dest, | 854 Register dest, |
884 Register src, | 855 Register src, |
885 Register count, | 856 Register count, |
886 bool ascii); | 857 bool ascii); |
887 | 858 |
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1053 return ObjectBits::encode(object_.code()) | | 1024 return ObjectBits::encode(object_.code()) | |
1054 AddressBits::encode(addr_.code()) | | 1025 AddressBits::encode(addr_.code()) | |
1055 ScratchBits::encode(scratch_.code()); | 1026 ScratchBits::encode(scratch_.code()); |
1056 } | 1027 } |
1057 }; | 1028 }; |
1058 | 1029 |
1059 | 1030 |
1060 } } // namespace v8::internal | 1031 } } // namespace v8::internal |
1061 | 1032 |
1062 #endif // V8_X64_CODEGEN_X64_H_ | 1033 #endif // V8_X64_CODEGEN_X64_H_ |
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