1 /*
2 * Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2018, 2019, Red Hat, Inc. All rights reserved.
4 * Copyright (c) 2020, 2021, Huawei Technologies Co., Ltd. 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_RISCV_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_RISCV_HPP
28 #define CPU_RISCV_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_RISCV_HPP
29
30 #include "asm/macroAssembler.hpp"
31 #include "gc/shared/barrierSetAssembler.hpp"
32 #include "gc/shenandoah/shenandoahBarrierSet.hpp"
33
34 #ifdef COMPILER1
35 class LIR_Assembler;
36 class ShenandoahPreBarrierStub;
37 class ShenandoahLoadReferenceBarrierStub;
38 class StubAssembler;
39 #endif
40 #ifdef COMPILER2
41 class MachNode;
42 #endif // COMPILER2
43 class StubCodeGenerator;
44
45 class ShenandoahBarrierSetAssembler: public BarrierSetAssembler {
46 private:
47
48 void satb_barrier(MacroAssembler* masm,
49 Register obj,
50 Register pre_val,
51 Register thread,
52 Register tmp1,
53 Register tmp2);
54
55 void card_barrier(MacroAssembler* masm, Register obj);
56
57 void resolve_forward_pointer(MacroAssembler* masm, Register dst, Register tmp = noreg);
58 void resolve_forward_pointer_not_null(MacroAssembler* masm, Register dst, Register tmp = noreg);
59 void load_reference_barrier(MacroAssembler* masm, Register dst, Address load_addr, DecoratorSet decorators);
60
61 void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators,
62 Register start, Register count,
63 Register tmp);
64
65 public:
66
67 virtual NMethodPatchingType nmethod_patching_type() { return NMethodPatchingType::conc_instruction_and_data_patch; }
68
69 virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop,
70 Register src, Register dst, Register count, RegSet saved_regs);
71
72 virtual void arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop,
73 Register start, Register count, Register tmp);
74
75 virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
76 Register dst, Address src, Register tmp1, Register tmp2);
77 virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
78 Address dst, Register val, Register tmp1, Register tmp2, Register tmp3);
79
80 virtual void try_resolve_jobject_in_native(MacroAssembler* masm, Register jni_env,
81 Register obj, Register tmp, Label& slowpath);
82 virtual void try_peek_weak_handle_in_nmethod(MacroAssembler* masm, Register weak_handle, Register obj,
83 Register tmp, Label& slow_path);
84 void cmpxchg_oop(MacroAssembler* masm, Register addr, Register expected, Register new_val,
85 Assembler::Aqrl acquire, Assembler::Aqrl release, bool is_cae, Register result);
86
87 #ifdef COMPILER1
88 void gen_pre_barrier_stub(LIR_Assembler* ce, ShenandoahPreBarrierStub* stub);
89 void gen_load_reference_barrier_stub(LIR_Assembler* ce, ShenandoahLoadReferenceBarrierStub* stub);
90 void generate_c1_pre_barrier_runtime_stub(StubAssembler* sasm);
91 void generate_c1_load_reference_barrier_runtime_stub(StubAssembler* sasm, DecoratorSet decorators);
92 #endif
93
94 #ifdef COMPILER2
95 // Entry points from Matcher
96 void load_c2(const MachNode* node, MacroAssembler* masm, Register dst, Address addr, bool is_narrow);
97 void store_c2(const MachNode* node, MacroAssembler* masm, Address dst, bool dst_narrow, Register src,
98 bool src_narrow, Register tmp);
99 void compare_and_set_c2(const MachNode* node, MacroAssembler* masm, Register res, Register addr, Register oldval,
100 Register newval, Register tmp, bool exchange, bool narrow, bool is_acquire);
101 void get_and_set_c2(const MachNode* node, MacroAssembler* masm, Register preval, Register newval,
102 Register addr, Register tmp, bool is_acquire);
103
104 void gc_state_check_c2(MacroAssembler* masm, Register rscratch, const unsigned char test_state, BarrierStubC2* slow_stub);
105 void card_barrier_c2(const MachNode* node, MacroAssembler* masm, Address addr);
106 #endif
107 };
108
109 #endif // CPU_RISCV_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_RISCV_HPP