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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