1 /*
2 * Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2018, 2022, Red Hat, Inc. All rights reserved.
4 * Copyright (c) 2012, 2026 SAP SE. All rights reserved.
5 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 *
7 * This code is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 only, as
9 * published by the Free Software Foundation.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 *
25 */
26
27 #ifndef CPU_PPC_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_PPC_HPP
28 #define CPU_PPC_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_PPC_HPP
29
30 #include "asm/macroAssembler.hpp"
31 #include "gc/shared/barrierSetAssembler.hpp"
32 #include "gc/shenandoah/shenandoahBarrierSet.hpp"
33
34 #ifdef COMPILER1
35
36 class LIR_Assembler;
37 class ShenandoahPreBarrierStub;
38 class ShenandoahLoadReferenceBarrierStub;
39 class StubAssembler;
40
41 #endif
42
43 #ifdef COMPILER2
44
45 class MachNode;
46
47 #endif
48
49 class StubCodeGenerator;
50
51 class ShenandoahBarrierSetAssembler: public BarrierSetAssembler {
52 private:
53
54 /* ==== Actual barrier implementations ==== */
55 void satb_barrier_impl(MacroAssembler* masm, DecoratorSet decorators,
56 Register base, RegisterOrConstant ind_or_offs,
57 Register pre_val,
58 Register tmp1, Register tmp2,
59 MacroAssembler::PreservationLevel preservation_level);
60
61 void card_barrier(MacroAssembler* masm,
62 Register base, RegisterOrConstant ind_or_offs,
63 Register tmp);
64
65 void load_reference_barrier_impl(MacroAssembler* masm, DecoratorSet decorators,
66 Register base, RegisterOrConstant ind_or_offs,
67 Register dst,
68 Register tmp1, Register tmp2,
69 MacroAssembler::PreservationLevel preservation_level);
70
71 /* ==== Helper methods for barrier implementations ==== */
72 void resolve_forward_pointer_not_null(MacroAssembler* masm, Register dst, Register tmp);
73
74 void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators,
75 Register addr, Register count,
76 Register preserve);
77
78 public:
79 virtual NMethodPatchingType nmethod_patching_type() { return NMethodPatchingType::conc_instruction_and_data_patch; }
80
81 /* ==== C1 stubs ==== */
82 #ifdef COMPILER1
83
84 void gen_pre_barrier_stub(LIR_Assembler* ce, ShenandoahPreBarrierStub* stub);
85
86 void gen_load_reference_barrier_stub(LIR_Assembler* ce, ShenandoahLoadReferenceBarrierStub* stub);
87
88 void generate_c1_pre_barrier_runtime_stub(StubAssembler* sasm);
89
90 void generate_c1_load_reference_barrier_runtime_stub(StubAssembler* sasm, DecoratorSet decorators);
91
92 #endif
93
94 /* ==== Available barriers (facades of the actual implementations) ==== */
95 void satb_barrier(MacroAssembler* masm,
96 Register base, RegisterOrConstant ind_or_offs,
97 Register tmp1, Register tmp2, Register tmp3,
98 MacroAssembler::PreservationLevel preservation_level);
99
100 void load_reference_barrier(MacroAssembler* masm, DecoratorSet decorators,
101 Register base, RegisterOrConstant ind_or_offs,
102 Register dst,
103 Register tmp1, Register tmp2,
104 MacroAssembler::PreservationLevel preservation_level);
105
106 /* ==== Helper methods used by C1 and C2 ==== */
107 void cmpxchg_oop(MacroAssembler* masm, Register base_addr, Register expected, Register new_val,
108 Register tmp1, Register tmp2,
109 bool is_cae, Register result);
110
111 /* ==== Access api ==== */
112 virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
113 Register src, Register dst, Register count,
114 Register preserve1, Register preserve2);
115 virtual void arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
116 Register dst, Register count,
117 Register preserve);
118
119 virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
120 Register base, RegisterOrConstant ind_or_offs, Register val,
121 Register tmp1, Register tmp2, Register tmp3,
122 MacroAssembler::PreservationLevel preservation_level);
123
124 virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
125 Register base, RegisterOrConstant ind_or_offs, Register dst,
126 Register tmp1, Register tmp2,
127 MacroAssembler::PreservationLevel preservation_level, Label* L_handle_null = nullptr);
128
129 virtual void try_resolve_jobject_in_native(MacroAssembler* masm, Register dst, Register jni_env,
130 Register obj, Register tmp, Label& slowpath);
131
132 virtual void try_resolve_weak_handle(MacroAssembler* masm, Register obj, Register tmp, Label& slow_path);
133
134 #ifdef COMPILER2
135 // Entry points from Matcher
136 void load_c2(const MachNode* node, MacroAssembler* masm,
137 Register dst, Address addr);
138
139 void store_c2(const MachNode* node, MacroAssembler* masm,
140 Address dst, bool dst_narrow, Register src, bool src_narrow);
141
142 void compare_and_set_c2(const MachNode* node, MacroAssembler* masm,
143 Register res, Register addr, Register oldval,
144 Register newval, bool exchange, bool narrow, bool weak);
145
146 void get_and_set_c2(const MachNode* node, MacroAssembler* masm,
147 Register preval, Register newval, Register addr);
148
149 void card_barrier_c2(const MachNode* node, MacroAssembler* masm,
150 Address addr);
151 #endif // COMPILER2
152 };
153
154 #endif // CPU_PPC_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_PPC_HPP