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_G1_G1BARRIERSETASSEMBLER_X86_HPP
26 #define CPU_X86_GC_G1_G1BARRIERSETASSEMBLER_X86_HPP
27 
28 #include "asm/macroAssembler.hpp"
29 #include "gc/shared/modRefBarrierSetAssembler.hpp"
30 
31 class G1BarrierSetAssembler: public ModRefBarrierSetAssembler {
32  protected:
33   virtual void gen_write_ref_array_pre_barrier(MacroAssembler* masm, DecoratorSet decorators, Register addr, Register count);
34   virtual void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators, Register addr, Register count, Register tmp);
35 
36   void g1_write_barrier_pre(MacroAssembler* masm,
37                             Register obj,
38                             Register pre_val,
39                             Register thread,
40                             Register tmp,
41                             bool tosca_live,
42                             bool expand_call);
43 
44   void g1_write_barrier_post(MacroAssembler* masm,
45                              Register store_addr,
46                              Register new_val,
47                              Register thread,
48                              Register tmp,
49                              Register tmp2);
50 
51   virtual void oop_store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
52                             Address dst, Register val, Register tmp1, Register tmp2);
53 
54  public:
55   virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
56                        Register dst, Address src, Register tmp1, Register tmp_thread);
57 };
58 
59 #endif // CPU_X86_GC_G1_G1BARRIERSETASSEMBLER_X86_HPP