1 /*
 2  * Copyright (c) 2018, 2021, Red Hat, Inc. 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_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_X86_HPP
26 #define CPU_X86_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_X86_HPP
27 
28 #include "asm/macroAssembler.hpp"
29 #include "gc/shared/barrierSetAssembler.hpp"
30 #include "gc/shenandoah/shenandoahBarrierSet.hpp"
31 
32 #ifdef COMPILER1
33 class LIR_Assembler;
34 class ShenandoahPreBarrierStub;
35 class ShenandoahLoadReferenceBarrierStub;
36 class StubAssembler;
37 #endif
38 class StubCodeGenerator;
39 
40 class ShenandoahBarrierSetAssembler: public BarrierSetAssembler {
41 private:
42 
43   void satb_write_barrier_pre(MacroAssembler* masm,
44                               Register obj,
45                               Register pre_val,
46                               Register thread,
47                               Register tmp,
48                               bool tosca_live,
49                               bool expand_call);
50 
51   void shenandoah_write_barrier_pre(MacroAssembler* masm,
52                                     Register obj,
53                                     Register pre_val,
54                                     Register thread,
55                                     Register tmp,
56                                     bool tosca_live,
57                                     bool expand_call);
58 
59   void iu_barrier_impl(MacroAssembler* masm, Register dst, Register tmp);
60 
61 public:
62   void iu_barrier(MacroAssembler* masm, Register dst, Register tmp);
63 #ifdef COMPILER1
64   void gen_pre_barrier_stub(LIR_Assembler* ce, ShenandoahPreBarrierStub* stub);
65   void gen_load_reference_barrier_stub(LIR_Assembler* ce, ShenandoahLoadReferenceBarrierStub* stub);
66   void generate_c1_pre_barrier_runtime_stub(StubAssembler* sasm);
67   void generate_c1_load_reference_barrier_runtime_stub(StubAssembler* sasm, DecoratorSet decorators);
68 #endif
69 
70   void load_reference_barrier(MacroAssembler* masm, Register dst, Address src, DecoratorSet decorators);
71 
72   void cmpxchg_oop(MacroAssembler* masm,
73                    Register res, Address addr, Register oldval, Register newval,
74                    bool exchange, Register tmp1, Register tmp2);
75   virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
76                                   Register src, Register dst, Register count);
77   virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
78                        Register dst, Address src, Register tmp1, Register tmp_thread);
79   virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
80                         Address dst, Register val, Register tmp1, Register tmp2, Register tmp3 = noreg);
81   virtual void try_resolve_jobject_in_native(MacroAssembler* masm, Register jni_env,
82                                              Register obj, Register tmp, Label& slowpath);
83 };
84 
85 #endif // CPU_X86_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_X86_HPP