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1 /*
2  * Copyright (C) 2012 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef ART_RUNTIME_MODIFIERS_H_
18 #define ART_RUNTIME_MODIFIERS_H_
19 
20 #include <stdint.h>
21 
22 static constexpr uint32_t kAccPublic =       0x0001;  // class, field, method, ic
23 static constexpr uint32_t kAccPrivate =      0x0002;  // field, method, ic
24 static constexpr uint32_t kAccProtected =    0x0004;  // field, method, ic
25 static constexpr uint32_t kAccStatic =       0x0008;  // field, method, ic
26 static constexpr uint32_t kAccFinal =        0x0010;  // class, field, method, ic
27 static constexpr uint32_t kAccSynchronized = 0x0020;  // method (only allowed on natives)
28 static constexpr uint32_t kAccSuper =        0x0020;  // class (not used in dex)
29 static constexpr uint32_t kAccVolatile =     0x0040;  // field
30 static constexpr uint32_t kAccBridge =       0x0040;  // method (1.5)
31 static constexpr uint32_t kAccTransient =    0x0080;  // field
32 static constexpr uint32_t kAccVarargs =      0x0080;  // method (1.5)
33 static constexpr uint32_t kAccNative =       0x0100;  // method
34 static constexpr uint32_t kAccInterface =    0x0200;  // class, ic
35 static constexpr uint32_t kAccAbstract =     0x0400;  // class, method, ic
36 static constexpr uint32_t kAccStrict =       0x0800;  // method
37 static constexpr uint32_t kAccSynthetic =    0x1000;  // class, field, method, ic
38 static constexpr uint32_t kAccAnnotation =   0x2000;  // class, ic (1.5)
39 static constexpr uint32_t kAccEnum =         0x4000;  // class, field, ic (1.5)
40 
41 static constexpr uint32_t kAccJavaFlagsMask = 0xffff;  // bits set from Java sources (low 16)
42 
43 static constexpr uint32_t kAccConstructor =          0x00010000;  // method (dex only) <(cl)init>
44 static constexpr uint32_t kAccDeclaredSynchronized = 0x00020000;  // method (dex only)
45 static constexpr uint32_t kAccClassIsProxy =         0x00040000;  // class  (dex only)
46 static constexpr uint32_t kAccPreverified =          0x00080000;  // class (runtime),
47                                                                   // method (dex only)
48 static constexpr uint32_t kAccFastNative =           0x00080000;  // method (dex only)
49 static constexpr uint32_t kAccPortableCompiled =     0x00100000;  // method (dex only)
50 static constexpr uint32_t kAccMiranda =              0x00200000;  // method (dex only)
51 
52 // Special runtime-only flags.
53 // Note: if only kAccClassIsReference is set, we have a soft reference.
54 
55 // class/ancestor overrides finalize()
56 static constexpr uint32_t kAccClassIsFinalizable        = 0x80000000;
57 // class is a soft/weak/phantom ref
58 static constexpr uint32_t kAccClassIsReference          = 0x08000000;
59 // class is a weak reference
60 static constexpr uint32_t kAccClassIsWeakReference      = 0x04000000;
61 // class is a finalizer reference
62 static constexpr uint32_t kAccClassIsFinalizerReference = 0x02000000;
63 // class is a phantom reference
64 static constexpr uint32_t kAccClassIsPhantomReference   = 0x01000000;
65 
66 static constexpr uint32_t kAccReferenceFlagsMask = (kAccClassIsReference
67                                                   | kAccClassIsWeakReference
68                                                   | kAccClassIsFinalizerReference
69                                                   | kAccClassIsPhantomReference);
70 
71 // Valid (meaningful) bits for a field.
72 static constexpr uint32_t kAccValidFieldFlags = kAccPublic | kAccPrivate | kAccProtected |
73     kAccStatic | kAccFinal | kAccVolatile | kAccTransient | kAccSynthetic | kAccEnum;
74 
75 // Valid (meaningful) bits for a method.
76 static constexpr uint32_t kAccValidMethodFlags = kAccPublic | kAccPrivate | kAccProtected |
77     kAccStatic | kAccFinal | kAccSynchronized | kAccBridge | kAccVarargs | kAccNative |
78     kAccAbstract | kAccStrict | kAccSynthetic | kAccMiranda | kAccConstructor |
79     kAccDeclaredSynchronized;
80 
81 // Valid (meaningful) bits for a class (not interface).
82 // Note 1. These are positive bits. Other bits may have to be zero.
83 // Note 2. Inner classes can expose more access flags to Java programs. That is handled by libcore.
84 static constexpr uint32_t kAccValidClassFlags = kAccPublic | kAccFinal | kAccSuper |
85     kAccAbstract | kAccSynthetic | kAccEnum;
86 
87 // Valid (meaningful) bits for an interface.
88 // Note 1. Annotations are interfaces.
89 // Note 2. These are positive bits. Other bits may have to be zero.
90 // Note 3. Inner classes can expose more access flags to Java programs. That is handled by libcore.
91 static constexpr uint32_t kAccValidInterfaceFlags = kAccPublic | kAccInterface |
92     kAccAbstract | kAccSynthetic | kAccAnnotation;
93 
94 #endif  // ART_RUNTIME_MODIFIERS_H_
95 
96