1 /*
2 * Copyright (c) 2018, 2022, Red Hat, Inc. All rights reserved.
3 * Copyright (c) 2012, 2022 SAP SE. 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_PPC_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_PPC_HPP
27 #define CPU_PPC_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_PPC_HPP
28
29 #include "asm/macroAssembler.hpp"
30 #include "gc/shared/barrierSetAssembler.hpp"
31 #include "gc/shenandoah/shenandoahBarrierSet.hpp"
32
33 #ifdef COMPILER1
34
35 class LIR_Assembler;
36 class ShenandoahPreBarrierStub;
37 class ShenandoahLoadReferenceBarrierStub;
38 class StubAssembler;
39
40 #endif
41
42 class StubCodeGenerator;
43
44 class ShenandoahBarrierSetAssembler: public BarrierSetAssembler {
45 private:
46
47 /* ==== Actual barrier implementations ==== */
48 void satb_write_barrier_impl(MacroAssembler* masm, DecoratorSet decorators,
49 Register base, RegisterOrConstant ind_or_offs,
50 Register pre_val,
51 Register tmp1, Register tmp2,
52 MacroAssembler::PreservationLevel preservation_level);
53
54 void store_check(MacroAssembler* masm,
55 Register base, RegisterOrConstant ind_or_offs,
56 Register tmp);
57
58 void load_reference_barrier_impl(MacroAssembler* masm, DecoratorSet decorators,
59 Register base, RegisterOrConstant ind_or_offs,
60 Register dst,
61 Register tmp1, Register tmp2,
62 MacroAssembler::PreservationLevel preservation_level);
63
64 /* ==== Helper methods for barrier implementations ==== */
65 void resolve_forward_pointer_not_null(MacroAssembler* masm, Register dst, Register tmp);
66
67 void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators,
68 Register addr, Register count,
69 Register preserve);
70
71 public:
72 virtual NMethodPatchingType nmethod_patching_type() { return NMethodPatchingType::conc_data_patch; }
73
74 /* ==== C1 stubs ==== */
75 #ifdef COMPILER1
76
77 void gen_pre_barrier_stub(LIR_Assembler* ce, ShenandoahPreBarrierStub* stub);
78
79 void gen_load_reference_barrier_stub(LIR_Assembler* ce, ShenandoahLoadReferenceBarrierStub* stub);
80
81 void generate_c1_pre_barrier_runtime_stub(StubAssembler* sasm);
82
83 void generate_c1_load_reference_barrier_runtime_stub(StubAssembler* sasm, DecoratorSet decorators);
84
85 #endif
86
87 /* ==== Available barriers (facades of the actual implementations) ==== */
88 void satb_write_barrier(MacroAssembler* masm,
89 Register base, RegisterOrConstant ind_or_offs,
90 Register tmp1, Register tmp2, Register tmp3,
91 MacroAssembler::PreservationLevel preservation_level);
92
93 void iu_barrier(MacroAssembler* masm,
94 Register val,
95 Register tmp1, Register tmp2,
96 MacroAssembler::PreservationLevel preservation_level, DecoratorSet decorators = 0);
97
98 void load_reference_barrier(MacroAssembler* masm, DecoratorSet decorators,
99 Register base, RegisterOrConstant ind_or_offs,
100 Register dst,
101 Register tmp1, Register tmp2,
102 MacroAssembler::PreservationLevel preservation_level);
103
104 /* ==== Helper methods used by C1 and C2 ==== */
105 void cmpxchg_oop(MacroAssembler* masm, Register base_addr, Register expected, Register new_val,
106 Register tmp1, Register tmp2,
107 bool is_cae, Register result);
108
109 /* ==== Access api ==== */
110 virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
111 Register src, Register dst, Register count,
112 Register preserve1, Register preserve2);
113 virtual void arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
114 Register dst, Register count,
115 Register preserve);
116
117 virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
118 Register base, RegisterOrConstant ind_or_offs, Register val,
119 Register tmp1, Register tmp2, Register tmp3,
120 MacroAssembler::PreservationLevel preservation_level);
121
122 virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
123 Register base, RegisterOrConstant ind_or_offs, Register dst,
124 Register tmp1, Register tmp2,
125 MacroAssembler::PreservationLevel preservation_level, Label* L_handle_null = nullptr);
126
127 virtual void try_resolve_jobject_in_native(MacroAssembler* masm, Register dst, Register jni_env,
128 Register obj, Register tmp, Label& slowpath);
129 };
130
131 #endif // CPU_PPC_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_PPC_HPP