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
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23 */
24
25#ifndef CPU_X86_GC_SHARED_MODREFBARRIERSETASSEMBLER_X86_HPP
26#define CPU_X86_GC_SHARED_MODREFBARRIERSETASSEMBLER_X86_HPP
27
28#include "asm/macroAssembler.hpp"
29#include "gc/shared/barrierSetAssembler.hpp"
30
31// The ModRefBarrierSetAssembler filters away accesses on BasicTypes other
32// than T_OBJECT/T_ARRAY (oops). The oop accesses call one of the protected
33// accesses, which are overridden in the concrete BarrierSetAssembler.
34
35class ModRefBarrierSetAssembler: public BarrierSetAssembler {
36protected:
37 virtual void gen_write_ref_array_pre_barrier(MacroAssembler* masm, DecoratorSet decorators,
38 Register addr, Register count) {}
39 virtual void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators,
40 Register addr, Register count, Register tmp) {}
41 virtual void oop_store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
42 Address dst, Register val, Register tmp1, Register tmp2) = 0;
43public:
44 virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
45 Register src, Register dst, Register count);
46 virtual void arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
47 Register src, Register dst, Register count);
48
49 virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
50 Address dst, Register val, Register tmp1, Register tmp2);
51};
52
53#endif // CPU_X86_GC_SHARED_MODREFBARRIERSETASSEMBLER_X86_HPP
54