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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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565 uc16 mask, | 565 uc16 mask, |
566 Label* on_not_equal) { | 566 Label* on_not_equal) { |
567 ASSERT(minus < String::kMaxUtf16CodeUnit); | 567 ASSERT(minus < String::kMaxUtf16CodeUnit); |
568 __ lea(rax, Operand(current_character(), -minus)); | 568 __ lea(rax, Operand(current_character(), -minus)); |
569 __ and_(rax, Immediate(mask)); | 569 __ and_(rax, Immediate(mask)); |
570 __ cmpl(rax, Immediate(c)); | 570 __ cmpl(rax, Immediate(c)); |
571 BranchOrBacktrack(not_equal, on_not_equal); | 571 BranchOrBacktrack(not_equal, on_not_equal); |
572 } | 572 } |
573 | 573 |
574 | 574 |
| 575 void RegExpMacroAssemblerX64::CheckCharacterInRange( |
| 576 uc16 from, |
| 577 uc16 to, |
| 578 Label* on_in_range) { |
| 579 __ leal(rax, Operand(current_character(), -from)); |
| 580 __ cmpl(rax, Immediate(to - from)); |
| 581 BranchOrBacktrack(below_equal, on_in_range); |
| 582 } |
| 583 |
| 584 |
| 585 void RegExpMacroAssemblerX64::CheckCharacterNotInRange( |
| 586 uc16 from, |
| 587 uc16 to, |
| 588 Label* on_not_in_range) { |
| 589 __ leal(rax, Operand(current_character(), -from)); |
| 590 __ cmpl(rax, Immediate(to - from)); |
| 591 BranchOrBacktrack(above, on_not_in_range); |
| 592 } |
| 593 |
| 594 |
| 595 void RegExpMacroAssemblerX64::CheckBitInTable( |
| 596 Handle<ByteArray> table, |
| 597 Label* on_bit_set) { |
| 598 __ Move(rax, table); |
| 599 Register index = current_character(); |
| 600 if (mode_ != ASCII || kTableMask != String::kMaxAsciiCharCode) { |
| 601 __ movq(rbx, current_character()); |
| 602 __ and_(rbx, Immediate(kTableMask)); |
| 603 index = rbx; |
| 604 } |
| 605 __ cmpb(FieldOperand(rax, index, times_1, ByteArray::kHeaderSize), |
| 606 Immediate(0)); |
| 607 BranchOrBacktrack(not_equal, on_bit_set); |
| 608 } |
| 609 |
| 610 |
575 bool RegExpMacroAssemblerX64::CheckSpecialCharacterClass(uc16 type, | 611 bool RegExpMacroAssemblerX64::CheckSpecialCharacterClass(uc16 type, |
576 Label* on_no_match) { | 612 Label* on_no_match) { |
577 // Range checks (c in min..max) are generally implemented by an unsigned | 613 // Range checks (c in min..max) are generally implemented by an unsigned |
578 // (c - min) <= (max - min) check, using the sequence: | 614 // (c - min) <= (max - min) check, using the sequence: |
579 // lea(rax, Operand(current_character(), -min)) or sub(rax, Immediate(min)) | 615 // lea(rax, Operand(current_character(), -min)) or sub(rax, Immediate(min)) |
580 // cmp(rax, Immediate(max - min)) | 616 // cmp(rax, Immediate(max - min)) |
581 switch (type) { | 617 switch (type) { |
582 case 's': | 618 case 's': |
583 // Match space-characters | 619 // Match space-characters |
584 if (mode_ == ASCII) { | 620 if (mode_ == ASCII) { |
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1416 } | 1452 } |
1417 } | 1453 } |
1418 | 1454 |
1419 #undef __ | 1455 #undef __ |
1420 | 1456 |
1421 #endif // V8_INTERPRETED_REGEXP | 1457 #endif // V8_INTERPRETED_REGEXP |
1422 | 1458 |
1423 }} // namespace v8::internal | 1459 }} // namespace v8::internal |
1424 | 1460 |
1425 #endif // V8_TARGET_ARCH_X64 | 1461 #endif // V8_TARGET_ARCH_X64 |
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