1 /*
2 * Copyright (c) 2017, 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
25 #ifndef SHARE_VM_GC_SHARED_C2BARRIERSETCODEGEN_HPP
26 #define SHARE_VM_GC_SHARED_C2BARRIERSETCODEGEN_HPP
27
28 enum C2Decorator {
29 C2_EMPTY_DECORATOR = UCONST64(0),
30 C2_ACCESS_ON_HEAP = UCONST64(1) << 0,
31 C2_ACCESS_ON_ARRAY = UCONST64(1) << 1,
32 C2_ACCESS_ON_WEAK = UCONST64(1) << 2,
33 C2_ACCESS_ON_ANONYMOUS = UCONST64(1) << 3,
34 C2_MISMATCHED = UCONST64(1) << 4,
35 C2_ACCESS_UNALIGNED = UCONST64(1) << 5,
36 C2_IS_FIELD = UCONST64(1) << 6,
37 C2_MO_VOLATILE = UCONST64(1) << 7,
38 C2_MO_RELAXED = UCONST64(1) << 8,
39 C2_MO_RELEASE = UCONST64(1) << 9,
40 C2_MO_ACQUIRE = UCONST64(1) << 10,
41 C2_MO_OPAQUE = UCONST64(1) << 11,
42 C2_ACCESS_ATOMIC = UCONST64(1) << 12,
43 C2_WEAK_CAS = UCONST64(1) << 13,
44 C2_ACCESS_FREE_CONTROL = UCONST64(1) << 14
45 };
46
47 typedef uint64_t C2DecoratorSet;
48
49 class GraphKit;
50 class IdealKit;
51 class Node;
52 class Type;
53 class TypePtr;
54 class PhaseMacroExpand;
55
56 class C2BarrierSetCodeGen: public CHeapObj<mtGC> {
57 protected:
58 virtual Node* store_at_resolved(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, Node* val, const Type* val_type, BasicType bt, C2DecoratorSet decorators);
59 virtual Node* load_at_resolved(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, const Type* val_type, BasicType bt, C2DecoratorSet decorators);
60
61 virtual Node* cas_val_at_resolved(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, int alias_idx, Node* expected_val, Node* new_val, const Type* value_type, Node* mem, Node*& load_store, BasicType bt, C2DecoratorSet decorators);
62 virtual Node* cas_bool_at_resolved(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, int alias_idx, Node* expected_val, Node* new_val, const Type* value_type, Node* mem, BasicType bt, C2DecoratorSet decorators);
63 virtual Node* swap_at_resolved(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, int alias_idx, Node* new_val, const Type* value_type, Node* mem, Node*& load_store, BasicType bt, C2DecoratorSet decorators);
64 virtual Node* fetch_and_add_at_resolved(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, int alias_idx, Node* new_val, const Type* value_type, Node* mem, BasicType bt, C2DecoratorSet decorators);
65
66 virtual C2DecoratorSet fixup_decorators(C2DecoratorSet decorators);
67
68 public:
69 virtual Node* store_at(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, Node* val, const Type* val_type, BasicType bt, C2DecoratorSet decorators);
70 virtual Node* load_at(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, const Type* val_type, BasicType bt, C2DecoratorSet decorators);
71
72 virtual Node* cas_val_at(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, int alias_idx, Node* expected_val, Node* new_val, const Type* value_type, BasicType bt, C2DecoratorSet decorators);
73 virtual Node* cas_bool_at(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, int alias_idx, Node* expected_val, Node* new_val, const Type* value_type, BasicType bt, C2DecoratorSet decorators);
74 virtual Node* swap_at(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, int alias_idx, Node* new_val, const Type* value_type, BasicType bt, C2DecoratorSet decorators);
75 virtual Node* fetch_and_add_at(GraphKit* kit, Node* obj, Node* adr, const TypePtr* adr_type, int alias_idx, Node* new_val, const Type* value_type, BasicType bt, C2DecoratorSet decorators);
76
77 virtual void clone(GraphKit* kit, Node* src, Node* dst, Node* size, bool is_array);
78
79 virtual bool is_gc_barrier_node(Node* node) { return false; }
80 virtual void eliminate_gc_barrier(PhaseMacroExpand* macro, Node* node) { }
81 virtual bool array_copy_requires_gc_barriers(BasicType type) { return false; }
82 };
83
84 #endif // SHARE_VM_GC_SHARED_C2BARRIERSETCODEGEN_HPP