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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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 
35 class ModRefBarrierSetAssembler: public BarrierSetAssembler {
36 protected:
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;
43 public:
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