1/*
2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
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
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
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23 */
24
25#ifndef SHARE_GC_SHARED_C1_MODREFBARRIERSETC1_HPP
26#define SHARE_GC_SHARED_C1_MODREFBARRIERSETC1_HPP
27
28#include "gc/shared/c1/barrierSetC1.hpp"
29
30// The ModRefBarrierSetC1 filters away accesses on BasicTypes other
31// than T_OBJECT/T_ARRAY (oops). The oop accesses call one of the protected
32// accesses, which are overridden in the concrete BarrierSetAssembler.
33
34class ModRefBarrierSetC1 : public BarrierSetC1 {
35protected:
36 virtual void pre_barrier(LIRAccess& access, LIR_Opr addr_opr,
37 LIR_Opr pre_val, CodeEmitInfo* info) {}
38 virtual void post_barrier(LIRAccess& access, LIR_OprDesc* addr,
39 LIR_OprDesc* new_val) {}
40
41 virtual LIR_Opr resolve_address(LIRAccess& access, bool resolve_in_register);
42
43 virtual void store_at_resolved(LIRAccess& access, LIR_Opr value);
44
45 virtual LIR_Opr atomic_cmpxchg_at_resolved(LIRAccess& access, LIRItem& cmp_value, LIRItem& new_value);
46
47 virtual LIR_Opr atomic_xchg_at_resolved(LIRAccess& access, LIRItem& value);
48};
49
50#endif // SHARE_GC_SHARED_C1_MODREFBARRIERSETC1_HPP
51