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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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| 170 // Generate code for copying characters using the rep movs instruction. | 170 // Generate code for copying characters using the rep movs instruction. |
| 171 // Copies ecx characters from esi to edi. Copying of overlapping regions is | 171 // Copies ecx characters from esi to edi. Copying of overlapping regions is |
| 172 // not supported. | 172 // not supported. |
| 173 static void GenerateCopyCharactersREP(MacroAssembler* masm, | 173 static void GenerateCopyCharactersREP(MacroAssembler* masm, |
| 174 Register dest, // Must be edi. | 174 Register dest, // Must be edi. |
| 175 Register src, // Must be esi. | 175 Register src, // Must be esi. |
| 176 Register count, // Must be ecx. | 176 Register count, // Must be ecx. |
| 177 Register scratch, // Neither of above. | 177 Register scratch, // Neither of above. |
| 178 bool ascii); | 178 bool ascii); |
| 179 | 179 |
| 180 // Probe the symbol table for a two character string. If the string | 180 // Probe the string table for a two character string. If the string |
| 181 // requires non-standard hashing a jump to the label not_probed is | 181 // requires non-standard hashing a jump to the label not_probed is |
| 182 // performed and registers c1 and c2 are preserved. In all other | 182 // performed and registers c1 and c2 are preserved. In all other |
| 183 // cases they are clobbered. If the string is not found by probing a | 183 // cases they are clobbered. If the string is not found by probing a |
| 184 // jump to the label not_found is performed. This jump does not | 184 // jump to the label not_found is performed. This jump does not |
| 185 // guarantee that the string is not in the symbol table. If the | 185 // guarantee that the string is not in the string table. If the |
| 186 // string is found the code falls through with the string in | 186 // string is found the code falls through with the string in |
| 187 // register eax. | 187 // register eax. |
| 188 static void GenerateTwoCharacterSymbolTableProbe(MacroAssembler* masm, | 188 static void GenerateTwoCharacterStringTableProbe(MacroAssembler* masm, |
| 189 Register c1, | 189 Register c1, |
| 190 Register c2, | 190 Register c2, |
| 191 Register scratch1, | 191 Register scratch1, |
| 192 Register scratch2, | 192 Register scratch2, |
| 193 Register scratch3, | 193 Register scratch3, |
| 194 Label* not_probed, | 194 Label* not_probed, |
| 195 Label* not_found); | 195 Label* not_found); |
| 196 | 196 |
| 197 // Generate string hash. | 197 // Generate string hash. |
| 198 static void GenerateHashInit(MacroAssembler* masm, | 198 static void GenerateHashInit(MacroAssembler* masm, |
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| 637 Register address_; | 637 Register address_; |
| 638 RememberedSetAction remembered_set_action_; | 638 RememberedSetAction remembered_set_action_; |
| 639 SaveFPRegsMode save_fp_regs_mode_; | 639 SaveFPRegsMode save_fp_regs_mode_; |
| 640 RegisterAllocation regs_; | 640 RegisterAllocation regs_; |
| 641 }; | 641 }; |
| 642 | 642 |
| 643 | 643 |
| 644 } } // namespace v8::internal | 644 } } // namespace v8::internal |
| 645 | 645 |
| 646 #endif // V8_IA32_CODE_STUBS_IA32_H_ | 646 #endif // V8_IA32_CODE_STUBS_IA32_H_ |
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