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      1 /*
      2  * Copyright (C) 2011 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_ASM_SUPPORT_H_
     18 #define ART_RUNTIME_ASM_SUPPORT_H_
     19 
     20 #include "read_barrier_c.h"
     21 
     22 // Value loaded into rSUSPEND for quick. When this value is counted down to zero we do a suspend
     23 // check.
     24 #define SUSPEND_CHECK_INTERVAL (96)
     25 
     26 // Offsets within java.lang.Object.
     27 #define CLASS_OFFSET 0
     28 #define LOCK_WORD_OFFSET 4
     29 
     30 #if !defined(USE_BAKER_OR_BROOKS_READ_BARRIER)
     31 
     32 // Offsets within java.lang.Class.
     33 #define CLASS_COMPONENT_TYPE_OFFSET 12
     34 
     35 // Array offsets.
     36 #define ARRAY_LENGTH_OFFSET 8
     37 #define OBJECT_ARRAY_DATA_OFFSET 12
     38 
     39 // Offsets within java.lang.String.
     40 #define STRING_VALUE_OFFSET 8
     41 #define STRING_COUNT_OFFSET 12
     42 #define STRING_OFFSET_OFFSET 20
     43 #define STRING_DATA_OFFSET 12
     44 
     45 // Offsets within java.lang.Method.
     46 #define METHOD_DEX_CACHE_METHODS_OFFSET 12
     47 
     48 // Verified by object_test.
     49 #define METHOD_QUICK_CODE_OFFSET_32 44
     50 #define METHOD_QUICK_CODE_OFFSET_64 56
     51 #define METHOD_PORTABLE_CODE_OFFSET_32 56
     52 #define METHOD_PORTABLE_CODE_OFFSET_64 72
     53 
     54 #else
     55 
     56 // Offsets within java.lang.Class.
     57 #define CLASS_COMPONENT_TYPE_OFFSET 20
     58 
     59 // Array offsets.
     60 #define ARRAY_LENGTH_OFFSET 16
     61 #define OBJECT_ARRAY_DATA_OFFSET 20
     62 
     63 // Offsets within java.lang.String.
     64 #define STRING_VALUE_OFFSET 16
     65 #define STRING_COUNT_OFFSET 20
     66 #define STRING_OFFSET_OFFSET 28
     67 #define STRING_DATA_OFFSET 20
     68 
     69 // Offsets within java.lang.Method.
     70 #define METHOD_DEX_CACHE_METHODS_OFFSET 20
     71 #define METHOD_PORTABLE_CODE_OFFSET 48
     72 #define METHOD_QUICK_CODE_OFFSET 56
     73 
     74 #endif  // USE_BAKER_OR_BROOKS_READ_BARRIER
     75 
     76 #endif  // ART_RUNTIME_ASM_SUPPORT_H_
     77