Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/cpu/mips/vm/stubGenerator_mips_64.cpp
src/cpu/mips/vm/stubGenerator_mips_64.cpp
- changeset 7
- e26ad49b7194
- parent 1
- 2d8a650513c2
- child 8
- cf5765c81f87
equal
deleted
inserted
replaced
| 6:fbd9470e188d | 7:e26ad49b7194 |
|---|---|
| 636 __ move(T8, T1); // original count in T1 | 636 __ move(T8, T1); // original count in T1 |
| 637 __ daddi(AT, T1, -3); | 637 __ daddi(AT, T1, -3); |
| 638 __ blez(AT, l_4); | 638 __ blez(AT, l_4); |
| 639 __ delayed()->nop(); | 639 __ delayed()->nop(); |
| 640 if (!aligned) { | 640 if (!aligned) { |
| 641 // 2016/5/8 Jin: only when src and dest has the same alignment can we do lw/sw */ | |
| 642 __ andi(AT, T3, 3); | |
| 643 __ andi(T9, T0, 3); | |
| 644 __ bne(AT, T9, l_5); | |
| 645 __ delayed()->nop(); | |
| 646 | |
| 641 // align source address at dword address boundary | 647 // align source address at dword address boundary |
| 642 __ move(T1, 4); | 648 __ move(T1, 4); |
| 643 __ sub(T1, T1, T3); | 649 __ sub(T1, T1, T3); |
| 644 __ andi(T1, T1, 3); | 650 __ andi(T1, T1, 3); |
| 645 __ beq(T1, R0, l_1); | 651 __ beq(T1, R0, l_1); |
| 709 // dwords or qwords that span cache line boundaries will still be loaded | 715 // dwords or qwords that span cache line boundaries will still be loaded |
| 710 // and stored atomically. | 716 // and stored atomically. |
| 711 // | 717 // |
| 712 address generate_conjoint_byte_copy(bool aligned, const char *name) { | 718 address generate_conjoint_byte_copy(bool aligned, const char *name) { |
| 713 Label l_1, l_2, l_3, l_4, l_5; | 719 Label l_1, l_2, l_3, l_4, l_5; |
| 720 Label l_unaligned, l_aligned; | |
| 714 StubCodeMark mark(this, "StubRoutines", name); | 721 StubCodeMark mark(this, "StubRoutines", name); |
| 715 __ align(CodeEntryAlignment); | 722 __ align(CodeEntryAlignment); |
| 716 address start = __ pc(); | 723 address start = __ pc(); |
| 717 address nooverlap_target = aligned ? | 724 address nooverlap_target = aligned ? |
| 718 StubRoutines::arrayof_jbyte_disjoint_arraycopy() : | 725 StubRoutines::arrayof_jbyte_disjoint_arraycopy() : |
| 723 __ push(T3); | 730 __ push(T3); |
| 724 __ push(T0); | 731 __ push(T0); |
| 725 __ push(T1); | 732 __ push(T1); |
| 726 __ push(T8); | 733 __ push(T8); |
| 727 | 734 |
| 728 | |
| 729 // copy from high to low | 735 // copy from high to low |
| 730 __ move(T3, A0); | 736 __ move(T3, A0); |
| 731 __ move(T0, A1); | 737 __ move(T0, A1); |
| 732 __ move(T1, A2); | 738 __ move(T1, A2); |
| 733 __ dadd(AT, T3, T1); | 739 __ dadd(T3, T3, T1); |
| 734 __ lea(T3, Address(AT, -4)); | 740 __ dadd(T0, T0, T1); |
| 735 __ dadd(AT, T0, T1); | 741 |
| 736 __ lea(T0, Address(AT, -4)); | 742 // 2016/5/8 Jin: copy starting unalinged bytes |
| 743 __ bind(l_unaligned); | |
| 744 __ beq(T1, R0, l_5); | |
| 745 __ delayed()->nop(); | |
| 746 | |
| 747 __ andi(AT, T3, 3); | |
| 748 __ beq(AT, R0, l_aligned); | |
| 749 __ delayed()->nop(); | |
| 750 __ lb(AT, T3, -1); | |
| 751 __ sb(AT, T0, -1); | |
| 752 __ daddi(AT, T1, -1); | |
| 753 __ daddi(AT, T3, -1); | |
| 754 __ daddi(AT, T0, -1); | |
| 755 __ b(l_unaligned); | |
| 756 __ delayed()->nop(); | |
| 757 | |
| 758 // now T0, T3 point to 4-byte aligned high-ends | |
| 759 // T1 contains byte count that is not copied. | |
| 760 __ bind(l_aligned); | |
| 761 | |
| 737 __ move(T8, T1); | 762 __ move(T8, T1); |
| 738 __ daddi(AT, T1, -3); | 763 __ daddi(AT, T1, -3); |
| 739 __ blez(AT, l_3); | 764 __ blez(AT, l_3); |
| 740 __ delayed()->nop(); | 765 __ delayed()->nop(); |
| 766 | |
| 767 __ andi(T8, T8, 3); | |
| 768 __ lea(T3, Address(T3, -4)); | |
| 769 __ lea(T0, Address(T0, -4)); | |
| 770 | |
| 741 __ dsrl(T1, T1, 2); | 771 __ dsrl(T1, T1, 2); |
| 742 __ align(16); | 772 __ align(16); |
| 743 __ bind(l_1); | 773 __ bind(l_1); |
| 744 __ lw(AT, T3, 0); | 774 __ lw(AT, T3, 0); |
| 745 __ sw(AT, T0, 0); | 775 __ sw(AT, T0, 0); |
