2 * Copyright (C) 2012 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef ART_RUNTIME_MODIFIERS_H_
18 #define ART_RUNTIME_MODIFIERS_H_
24 static constexpr uint32_t kAccPublic = 0x0001; // class, field, method, ic
25 static constexpr uint32_t kAccPrivate = 0x0002; // field, method, ic
26 static constexpr uint32_t kAccProtected = 0x0004; // field, method, ic
27 static constexpr uint32_t kAccStatic = 0x0008; // field, method, ic
28 static constexpr uint32_t kAccFinal = 0x0010; // class, field, method, ic
29 static constexpr uint32_t kAccSynchronized = 0x0020; // method (only allowed on natives)
30 static constexpr uint32_t kAccSuper = 0x0020; // class (not used in dex)
31 static constexpr uint32_t kAccVolatile = 0x0040; // field
32 static constexpr uint32_t kAccBridge = 0x0040; // method (1.5)
33 static constexpr uint32_t kAccTransient = 0x0080; // field
34 static constexpr uint32_t kAccVarargs = 0x0080; // method (1.5)
35 static constexpr uint32_t kAccNative = 0x0100; // method
36 static constexpr uint32_t kAccInterface = 0x0200; // class, ic
37 static constexpr uint32_t kAccAbstract = 0x0400; // class, method, ic
38 static constexpr uint32_t kAccStrict = 0x0800; // method
39 static constexpr uint32_t kAccSynthetic = 0x1000; // class, field, method, ic
40 static constexpr uint32_t kAccAnnotation = 0x2000; // class, ic (1.5)
41 static constexpr uint32_t kAccEnum = 0x4000; // class, field, ic (1.5)
43 static constexpr uint32_t kAccJavaFlagsMask = 0xffff; // bits set from Java sources (low 16)
45 static constexpr uint32_t kAccConstructor = 0x00010000; // method (dex only) <(cl)init>
46 static constexpr uint32_t kAccDeclaredSynchronized = 0x00020000; // method (dex only)
47 static constexpr uint32_t kAccClassIsProxy = 0x00040000; // class (dex only)
48 // Set to indicate that the ArtMethod is obsolete and has a different DexCache + DexFile from its
49 // declaring class. This flag may only be applied to methods.
50 static constexpr uint32_t kAccObsoleteMethod = 0x00040000; // method (runtime)
51 // Used by a method to denote that its execution does not need to go through slow path interpreter.
52 static constexpr uint32_t kAccSkipAccessChecks = 0x00080000; // method (dex only)
53 // Used by a class to denote that the verifier has attempted to check it at least once.
54 static constexpr uint32_t kAccVerificationAttempted = 0x00080000; // class (runtime)
55 static constexpr uint32_t kAccFastNative = 0x00080000; // method (dex only)
56 // This is set by the class linker during LinkInterfaceMethods. It is used by a method to represent
57 // that it was copied from its declaring class into another class. All methods marked kAccMiranda
58 // and kAccDefaultConflict will have this bit set. Any kAccDefault method contained in the methods_
59 // array of a concrete class will also have this bit set.
60 static constexpr uint32_t kAccCopied = 0x00100000; // method (runtime)
61 static constexpr uint32_t kAccMiranda = 0x00200000; // method (dex only)
62 static constexpr uint32_t kAccDefault = 0x00400000; // method (runtime)
63 // This is set by the class linker during LinkInterfaceMethods. Prior to that point we do not know
64 // if any particular method needs to be a default conflict. Used to figure out at runtime if
65 // invoking this method will throw an exception.
66 static constexpr uint32_t kAccDefaultConflict = 0x00800000; // method (runtime)
68 // Set by the verifier for a method we do not want the compiler to compile.
69 static constexpr uint32_t kAccCompileDontBother = 0x01000000; // method (runtime)
71 // Set by the verifier for a method that could not be verified to follow structured locking.
72 static constexpr uint32_t kAccMustCountLocks = 0x02000000; // method (runtime)
74 // Set by the class linker for a method that has only one implementation for a
76 static constexpr uint32_t kAccSingleImplementation = 0x08000000; // method (runtime)
78 static constexpr uint32_t kAccIntrinsic = 0x80000000; // method (runtime)
80 // Special runtime-only flags.
81 // Interface and all its super-interfaces with default methods have been recursively initialized.
82 static constexpr uint32_t kAccRecursivelyInitialized = 0x20000000;
83 // Interface declares some default method.
84 static constexpr uint32_t kAccHasDefaultMethod = 0x40000000;
85 // class/ancestor overrides finalize()
86 static constexpr uint32_t kAccClassIsFinalizable = 0x80000000;
88 static constexpr uint32_t kAccFlagsNotUsedByIntrinsic = 0x007FFFFF;
89 static constexpr uint32_t kAccMaxIntrinsic = 0xFF;
91 // Valid (meaningful) bits for a field.
92 static constexpr uint32_t kAccValidFieldFlags = kAccPublic | kAccPrivate | kAccProtected |
93 kAccStatic | kAccFinal | kAccVolatile | kAccTransient | kAccSynthetic | kAccEnum;
95 // Valid (meaningful) bits for a method.
96 static constexpr uint32_t kAccValidMethodFlags = kAccPublic | kAccPrivate | kAccProtected |
97 kAccStatic | kAccFinal | kAccSynchronized | kAccBridge | kAccVarargs | kAccNative |
98 kAccAbstract | kAccStrict | kAccSynthetic | kAccMiranda | kAccConstructor |
99 kAccDeclaredSynchronized;
101 // Valid (meaningful) bits for a class (not interface).
102 // Note 1. These are positive bits. Other bits may have to be zero.
103 // Note 2. Inner classes can expose more access flags to Java programs. That is handled by libcore.
104 static constexpr uint32_t kAccValidClassFlags = kAccPublic | kAccFinal | kAccSuper |
105 kAccAbstract | kAccSynthetic | kAccEnum;
107 // Valid (meaningful) bits for an interface.
108 // Note 1. Annotations are interfaces.
109 // Note 2. These are positive bits. Other bits may have to be zero.
110 // Note 3. Inner classes can expose more access flags to Java programs. That is handled by libcore.
111 static constexpr uint32_t kAccValidInterfaceFlags = kAccPublic | kAccInterface |
112 kAccAbstract | kAccSynthetic | kAccAnnotation;
116 #endif // ART_RUNTIME_MODIFIERS_H_