1647
1648 __ bind(runtime);
1649
1650 save_live_registers(sasm, 3);
1651
1652 // load the pre-value
1653 f.load_argument(0, rcx);
1654 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::g1_wb_pre), rcx, thread);
1655
1656 restore_live_registers(sasm);
1657
1658 __ bind(done);
1659
1660 __ pop(rdx);
1661 __ pop(rax);
1662 }
1663 break;
1664
1665 case g1_post_barrier_slow_id:
1666 {
1667 StubFrame f(sasm, "g1_post_barrier", dont_gc_arguments);
1668
1669
1670 // arg0: store_address
1671 Address store_addr(rbp, 2*BytesPerWord);
1672
1673 CardTableModRefBS* ct =
1674 barrier_set_cast<CardTableModRefBS>(Universe::heap()->barrier_set());
1675 assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust this code");
1676
1677 Label done;
1678 Label enqueued;
1679 Label runtime;
1680
1681 // At this point we know new_value is non-NULL and the new_value crosses regions.
1682 // Must check to see if card is already dirty
1683
1684 const Register thread = NOT_LP64(rax) LP64_ONLY(r15_thread);
1685
1686 Address queue_index(thread, in_bytes(JavaThread::dirty_card_queue_offset() +
|
1647
1648 __ bind(runtime);
1649
1650 save_live_registers(sasm, 3);
1651
1652 // load the pre-value
1653 f.load_argument(0, rcx);
1654 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::g1_wb_pre), rcx, thread);
1655
1656 restore_live_registers(sasm);
1657
1658 __ bind(done);
1659
1660 __ pop(rdx);
1661 __ pop(rax);
1662 }
1663 break;
1664
1665 case g1_post_barrier_slow_id:
1666 {
1667 // avoid touching CardTableModRefBS if not G1
1668 // FIXME: This looks like an upstream bug.
1669 if (!UseG1GC) break;
1670
1671 StubFrame f(sasm, "g1_post_barrier", dont_gc_arguments);
1672
1673
1674 // arg0: store_address
1675 Address store_addr(rbp, 2*BytesPerWord);
1676
1677 CardTableModRefBS* ct =
1678 barrier_set_cast<CardTableModRefBS>(Universe::heap()->barrier_set());
1679 assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust this code");
1680
1681 Label done;
1682 Label enqueued;
1683 Label runtime;
1684
1685 // At this point we know new_value is non-NULL and the new_value crosses regions.
1686 // Must check to see if card is already dirty
1687
1688 const Register thread = NOT_LP64(rax) LP64_ONLY(r15_thread);
1689
1690 Address queue_index(thread, in_bytes(JavaThread::dirty_card_queue_offset() +
|