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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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760 | 760 |
761 // Generate code for copying characters using the rep movs instruction. | 761 // Generate code for copying characters using the rep movs instruction. |
762 // Copies ecx characters from esi to edi. Copying of overlapping regions is | 762 // Copies ecx characters from esi to edi. Copying of overlapping regions is |
763 // not supported. | 763 // not supported. |
764 void GenerateCopyCharactersREP(MacroAssembler* masm, | 764 void GenerateCopyCharactersREP(MacroAssembler* masm, |
765 Register dest, // Must be edi. | 765 Register dest, // Must be edi. |
766 Register src, // Must be esi. | 766 Register src, // Must be esi. |
767 Register count, // Must be ecx. | 767 Register count, // Must be ecx. |
768 Register scratch, // Neither of the above. | 768 Register scratch, // Neither of the above. |
769 bool ascii); | 769 bool ascii); |
| 770 |
| 771 // Probe the symbol table for a two character string. If the string is |
| 772 // not found by probing a jump to the label not_found is performed. This jump |
| 773 // does not guarantee that the string is not in the symbol table. If the |
| 774 // string is found the code falls through with the string in register eax. |
| 775 void GenerateTwoCharacterSymbolTableProbe(MacroAssembler* masm, |
| 776 Register c1, |
| 777 Register c2, |
| 778 Register scratch1, |
| 779 Register scratch2, |
| 780 Register scratch3, |
| 781 Label* not_found); |
| 782 |
| 783 // Generate string hash. |
| 784 void GenerateHashInit(MacroAssembler* masm, |
| 785 Register hash, |
| 786 Register character, |
| 787 Register scratch); |
| 788 void GenerateHashAddCharacter(MacroAssembler* masm, |
| 789 Register hash, |
| 790 Register character, |
| 791 Register scratch); |
| 792 void GenerateHashGetHash(MacroAssembler* masm, |
| 793 Register hash, |
| 794 Register scratch); |
770 }; | 795 }; |
771 | 796 |
772 | 797 |
773 // Flag that indicates how to generate code for the stub StringAddStub. | 798 // Flag that indicates how to generate code for the stub StringAddStub. |
774 enum StringAddFlags { | 799 enum StringAddFlags { |
775 NO_STRING_ADD_FLAGS = 0, | 800 NO_STRING_ADD_FLAGS = 0, |
776 NO_STRING_CHECK_IN_STUB = 1 << 0 // Omit string check in stub. | 801 NO_STRING_CHECK_IN_STUB = 1 << 0 // Omit string check in stub. |
777 }; | 802 }; |
778 | 803 |
779 | 804 |
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824 Major MajorKey() { return StringCompare; } | 849 Major MajorKey() { return StringCompare; } |
825 int MinorKey() { return 0; } | 850 int MinorKey() { return 0; } |
826 | 851 |
827 void Generate(MacroAssembler* masm); | 852 void Generate(MacroAssembler* masm); |
828 }; | 853 }; |
829 | 854 |
830 | 855 |
831 } } // namespace v8::internal | 856 } } // namespace v8::internal |
832 | 857 |
833 #endif // V8_IA32_CODEGEN_IA32_H_ | 858 #endif // V8_IA32_CODEGEN_IA32_H_ |
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