1/*
2 * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24#ifndef SHARE_GC_Z_C1_ZBARRIERSETC1_HPP
25#define SHARE_GC_Z_C1_ZBARRIERSETC1_HPP
26
27#include "c1/c1_CodeStubs.hpp"
28#include "c1/c1_IR.hpp"
29#include "c1/c1_LIR.hpp"
30#include "gc/shared/c1/barrierSetC1.hpp"
31#include "oops/accessDecorators.hpp"
32
33class ZLoadBarrierStubC1 : public CodeStub {
34private:
35 DecoratorSet _decorators;
36 LIR_Opr _ref_addr;
37 LIR_Opr _ref;
38 LIR_Opr _tmp;
39 address _runtime_stub;
40
41public:
42 ZLoadBarrierStubC1(LIRAccess& access, LIR_Opr ref, address runtime_stub);
43
44 DecoratorSet decorators() const;
45 LIR_Opr ref() const;
46 LIR_Opr ref_addr() const;
47 LIR_Opr tmp() const;
48 address runtime_stub() const;
49
50 virtual void emit_code(LIR_Assembler* ce);
51 virtual void visit(LIR_OpVisitState* visitor);
52
53#ifndef PRODUCT
54 virtual void print_name(outputStream* out) const;
55#endif // PRODUCT
56};
57
58class ZBarrierSetC1 : public BarrierSetC1 {
59private:
60 address _load_barrier_on_oop_field_preloaded_runtime_stub;
61 address _load_barrier_on_weak_oop_field_preloaded_runtime_stub;
62
63 address load_barrier_on_oop_field_preloaded_runtime_stub(DecoratorSet decorators) const;
64 void load_barrier(LIRAccess& access, LIR_Opr result) const;
65
66protected:
67 virtual LIR_Opr resolve_address(LIRAccess& access, bool resolve_in_register);
68 virtual void load_at_resolved(LIRAccess& access, LIR_Opr result);
69 virtual LIR_Opr atomic_xchg_at_resolved(LIRAccess& access, LIRItem& value);
70 virtual LIR_Opr atomic_cmpxchg_at_resolved(LIRAccess& access, LIRItem& cmp_value, LIRItem& new_value);
71
72public:
73 ZBarrierSetC1();
74
75 virtual void generate_c1_runtime_stubs(BufferBlob* blob);
76};
77
78#endif // SHARE_GC_Z_C1_ZBARRIERSETC1_HPP
79