1 /*
 2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
 3  * Copyright (c) 2020, 2021, Huawei Technologies Co., Ltd. All rights reserved.
 4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 5  *
 6  * This code is free software; you can redistribute it and/or modify it
 7  * under the terms of the GNU General Public License version 2 only, as
 8  * published by the Free Software Foundation.
 9  *
10  * This code is distributed in the hope that it will be useful, but WITHOUT
11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13  * version 2 for more details (a copy is included in the LICENSE file that
14  * accompanied this code).
15  *
16  * You should have received a copy of the GNU General Public License version
17  * 2 along with this work; if not, write to the Free Software Foundation,
18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19  *
20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21  * or visit www.oracle.com if you need additional information or have any
22  * questions.
23  *
24  */
25 
26 #ifndef CPU_RISCV_GC_G1_G1BARRIERSETASSEMBLER_RISCV_HPP
27 #define CPU_RISCV_GC_G1_G1BARRIERSETASSEMBLER_RISCV_HPP
28 
29 #include "asm/macroAssembler.hpp"
30 #include "gc/shared/modRefBarrierSetAssembler.hpp"
31 #include "utilities/macros.hpp"
32 
33 #ifdef COMPILER1
34 class LIR_Assembler;
35 #endif
36 class StubAssembler;
37 class G1PreBarrierStub;
38 class G1PostBarrierStub;
39 
40 class G1BarrierSetAssembler: public ModRefBarrierSetAssembler {
41 protected:
42   void gen_write_ref_array_pre_barrier(MacroAssembler* masm, DecoratorSet decorators,
43                                        Register addr, Register count, RegSet saved_regs);
44   void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators,
45                                         Register start, Register count, Register tmp, RegSet saved_regs);
46 
47   void g1_write_barrier_pre(MacroAssembler* masm,
48                             Register obj,
49                             Register pre_val,
50                             Register thread,
51                             Register tmp,
52                             bool tosca_live,
53                             bool expand_call);
54 
55   void g1_write_barrier_post(MacroAssembler* masm,
56                              Register store_addr,
57                              Register new_val,
58                              Register thread,
59                              Register tmp,
60                              Register tmp2);
61 
62   virtual void oop_store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
63                             Address dst, Register val, Register tmp1, Register tmp2);
64 
65 public:
66 #ifdef COMPILER1
67   void gen_pre_barrier_stub(LIR_Assembler* ce, G1PreBarrierStub* stub);
68   void gen_post_barrier_stub(LIR_Assembler* ce, G1PostBarrierStub* stub);
69 
70   void generate_c1_pre_barrier_runtime_stub(StubAssembler* sasm);
71   void generate_c1_post_barrier_runtime_stub(StubAssembler* sasm);
72 #endif
73 
74   void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
75                Register dst, Address src, Register tmp1, Register tmp_thread);
76 };
77 
78 #endif // CPU_RISCV_GC_G1_G1BARRIERSETASSEMBLER_RISCV_HPP