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.
22  *
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 LIR_Assembler;
32 class StubAssembler;
33 class G1PreBarrierStub;
34 class G1PostBarrierStub;
35 
36 class G1BarrierSetAssembler: public ModRefBarrierSetAssembler {
37  protected:
38   virtual void gen_write_ref_array_pre_barrier(MacroAssembler* masm, DecoratorSet decorators, Register addr, Register count);
39   virtual void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators, Register addr, Register count, Register tmp);
40 
41   void g1_write_barrier_pre(MacroAssembler* masm,
42                             Register obj,
43                             Register pre_val,
44                             Register thread,
45                             Register tmp,
46                             bool tosca_live,
47                             bool expand_call);
48 
49   void g1_write_barrier_post(MacroAssembler* masm,
50                              Register store_addr,
51                              Register new_val,
52                              Register thread,
53                              Register tmp,
54                              Register tmp2);
55 
56   virtual void oop_store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
57                             Address dst, Register val, Register tmp1, Register tmp2);
58 
59  public:
60   void gen_pre_barrier_stub(LIR_Assembler* ce, G1PreBarrierStub* stub);
61   void gen_post_barrier_stub(LIR_Assembler* ce, G1PostBarrierStub* stub);
62 
63   void generate_c1_pre_barrier_runtime_stub(StubAssembler* sasm);
64   void generate_c1_post_barrier_runtime_stub(StubAssembler* sasm);
65 
66   virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
67                        Register dst, Address src, Register tmp1, Register tmp_thread);
68 };
69 
70 #endif // CPU_X86_GC_G1_G1BARRIERSETASSEMBLER_X86_HPP