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 load_reference_barrier_impl(MacroAssembler* masm, DecoratorSet decorators,
55 Register base, RegisterOrConstant ind_or_offs,
56 Register dst,
57 Register tmp1, Register tmp2,
58 MacroAssembler::PreservationLevel preservation_level);
59
60 /* ==== Helper methods for barrier implementations ==== */
61 void resolve_forward_pointer_not_null(MacroAssembler* masm, Register dst, Register tmp);
62
63 public:
64 virtual NMethodPatchingType nmethod_patching_type() { return NMethodPatchingType::conc_data_patch; }
65
66 /* ==== C1 stubs ==== */
67 #ifdef COMPILER1
68
69 void gen_pre_barrier_stub(LIR_Assembler* ce, ShenandoahPreBarrierStub* stub);
70
71 void gen_load_reference_barrier_stub(LIR_Assembler* ce, ShenandoahLoadReferenceBarrierStub* stub);
72
73 void generate_c1_pre_barrier_runtime_stub(StubAssembler* sasm);
74
75 void generate_c1_load_reference_barrier_runtime_stub(StubAssembler* sasm, DecoratorSet decorators);
76
77 #endif
78
79 /* ==== Available barriers (facades of the actual implementations) ==== */
80 void satb_write_barrier(MacroAssembler* masm,
81 Register base, RegisterOrConstant ind_or_offs,
82 Register tmp1, Register tmp2, Register tmp3,
83 MacroAssembler::PreservationLevel preservation_level);
84
85 void load_reference_barrier(MacroAssembler* masm, DecoratorSet decorators,
86 Register base, RegisterOrConstant ind_or_offs,
87 Register dst,
88 Register tmp1, Register tmp2,
89 MacroAssembler::PreservationLevel preservation_level);
90
91 /* ==== Helper methods used by C1 and C2 ==== */
92 void cmpxchg_oop(MacroAssembler* masm, Register base_addr, Register expected, Register new_val,
93 Register tmp1, Register tmp2,
94 bool is_cae, Register result);
95
96 /* ==== Access api ==== */
97 virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
98 Register src, Register dst, Register count, Register preserve1, Register preserve2);
99
100 virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
101 Register base, RegisterOrConstant ind_or_offs, Register val,
102 Register tmp1, Register tmp2, Register tmp3,
103 MacroAssembler::PreservationLevel preservation_level);
104
105 virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
106 Register base, RegisterOrConstant ind_or_offs, Register dst,
107 Register tmp1, Register tmp2,
108 MacroAssembler::PreservationLevel preservation_level, Label* L_handle_null = nullptr);
109
110 virtual void try_resolve_jobject_in_native(MacroAssembler* masm, Register dst, Register jni_env,
111 Register obj, Register tmp, Label& slowpath);
112 };
113
114 #endif // CPU_PPC_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_PPC_HPP