1 /*
 2  * Copyright (c) 2018, 2021, Red Hat, Inc. All rights reserved.
 3  * Copyright Amazon.com Inc. or its affiliates. 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_AARCH64_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_AARCH64_HPP
27 #define CPU_AARCH64_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_AARCH64_HPP
28 
29 #include "asm/macroAssembler.hpp"
30 #include "gc/shared/barrierSetAssembler.hpp"
31 #include "gc/shenandoah/shenandoahBarrierSet.hpp"
32 #ifdef COMPILER1
33 class LIR_Assembler;
34 class ShenandoahPreBarrierStub;
35 class ShenandoahLoadReferenceBarrierStub;
36 class StubAssembler;
37 #endif
38 #ifdef COMPILER2
39 class MachNode;
40 #endif // COMPILER2
41 class StubCodeGenerator;
42 
43 class ShenandoahBarrierSetAssembler: public BarrierSetAssembler {
44   friend class ShenandoahCASBarrierSlowStub;
45 private:
46 
47   void satb_barrier(MacroAssembler* masm,
48                     Register obj,
49                     Register pre_val,
50                     Register thread,
51                     Register tmp1,
52                     Register tmp2,
53                     bool tosca_live,
54                     bool expand_call);
55 
56   void card_barrier(MacroAssembler* masm, Register obj);
57 
58   void resolve_forward_pointer(MacroAssembler* masm, Register dst, Register tmp = noreg);
59   void resolve_forward_pointer_not_null(MacroAssembler* masm, Register dst, Register tmp = noreg);
60   void load_reference_barrier(MacroAssembler* masm, Register dst, Address load_addr, DecoratorSet decorators);
61 
62   void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators,
63                                         Register start, Register count,
64                                         Register scratch);
65 
66 public:
67   virtual NMethodPatchingType nmethod_patching_type() { return NMethodPatchingType::conc_instruction_and_data_patch; }
68 
69 #ifdef COMPILER1
70   void gen_pre_barrier_stub(LIR_Assembler* ce, ShenandoahPreBarrierStub* stub);
71   void gen_load_reference_barrier_stub(LIR_Assembler* ce, ShenandoahLoadReferenceBarrierStub* stub);
72   void generate_c1_pre_barrier_runtime_stub(StubAssembler* sasm);
73   void generate_c1_load_reference_barrier_runtime_stub(StubAssembler* sasm, DecoratorSet decorators);
74 #endif
75 
76   virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop,
77                                   Register src, Register dst, Register count, RegSet saved_regs);
78   virtual void arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop,
79                                   Register start, Register count, Register tmp);
80   virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
81                        Register dst, Address src, Register tmp1, Register tmp2);
82   virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
83                         Address dst, Register val, Register tmp1, Register tmp2, Register tmp3);
84   virtual void try_resolve_jobject_in_native(MacroAssembler* masm, Register jni_env,
85                                              Register obj, Register tmp, Label& slowpath);
86   void cmpxchg_oop(MacroAssembler* masm, Register addr, Register expected, Register new_val,
87                    bool acquire, bool release, bool is_cae, Register result);
88 #ifdef COMPILER2
89   void store_c2(const MachNode* node, MacroAssembler* masm, Register dst, bool dst_narrow, Register src, bool src_narrow, Register tmp, Register pre_val, bool is_volatile);
90   void cae_c2(const MachNode* node, MacroAssembler* masm, Register res, Register addr, Register oldval, Register newval, Register tmp1, Register tmp2, bool exchange, bool maybe_null, bool narrow, bool acquire, bool release, bool weak);
91 
92   void load_ref_barrier_c2(const MachNode* node, MacroAssembler* masm, Register obj, Register addr, bool narrow, bool maybe_null, Register gc_state);
93   void satb_barrier_c2(const MachNode* node, MacroAssembler* masm, Register obj, Register pre_val, Register gc_state, bool encoded_preval);
94   void card_barrier_c2(const MachNode* node, MacroAssembler* masm, Register addr, Register tmp);
95 #endif
96 };
97 
98 #endif // CPU_AARCH64_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_AARCH64_HPP
--- EOF ---