1 /* |
1 /* |
2 * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. |
2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * |
4 * |
5 * This code is free software; you can redistribute it and/or modify it |
5 * This code is free software; you can redistribute it and/or modify it |
6 * under the terms of the GNU General Public License version 2 only, as |
6 * under the terms of the GNU General Public License version 2 only, as |
7 * published by the Free Software Foundation. |
7 * published by the Free Software Foundation. |
835 BarrierSet* bs = Universe::heap()->barrier_set(); |
835 BarrierSet* bs = Universe::heap()->barrier_set(); |
836 switch (bs->kind()) { |
836 switch (bs->kind()) { |
837 case BarrierSet::G1SATBCTLogging: |
837 case BarrierSet::G1SATBCTLogging: |
838 // With G1, don't generate the call if we statically know that the target in uninitialized |
838 // With G1, don't generate the call if we statically know that the target in uninitialized |
839 if (!dest_uninitialized) { |
839 if (!dest_uninitialized) { |
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840 Register tmp = O5; |
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841 assert_different_registers(addr, count, tmp); |
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842 Label filtered; |
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843 // Is marking active? |
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844 if (in_bytes(SATBMarkQueue::byte_width_of_active()) == 4) { |
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845 __ ld(G2, in_bytes(JavaThread::satb_mark_queue_offset() + SATBMarkQueue::byte_offset_of_active()), tmp); |
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846 } else { |
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847 guarantee(in_bytes(SATBMarkQueue::byte_width_of_active()) == 1, |
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848 "Assumption"); |
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849 __ ldsb(G2, in_bytes(JavaThread::satb_mark_queue_offset() + SATBMarkQueue::byte_offset_of_active()), tmp); |
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850 } |
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851 // Is marking active? |
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852 __ cmp_and_br_short(tmp, G0, Assembler::equal, Assembler::pt, filtered); |
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853 |
840 __ save_frame(0); |
854 __ save_frame(0); |
841 // Save the necessary global regs... will be used after. |
855 // Save the necessary global regs... will be used after. |
842 if (addr->is_global()) { |
856 if (addr->is_global()) { |
843 __ mov(addr, L0); |
857 __ mov(addr, L0); |
844 } |
858 } |