runtime/asm_support.h

/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef ART_RUNTIME_ASM_SUPPORT_H_
#define ART_RUNTIME_ASM_SUPPORT_H_

#include "read_barrier_c.h"

// Value loaded into rSUSPEND for quick. When this value is counted down to zero we do a suspend
// check.
#define SUSPEND_CHECK_INTERVAL (96)

// Offsets within java.lang.Object.
#define CLASS_OFFSET 0
#define LOCK_WORD_OFFSET 4

#if !defined(USE_BAKER_OR_BROOKS_READ_BARRIER)

// Offsets within java.lang.Class.
#define CLASS_COMPONENT_TYPE_OFFSET 12

// Array offsets.
#define ARRAY_LENGTH_OFFSET 8
#define OBJECT_ARRAY_DATA_OFFSET 12

// Offsets within java.lang.String.
#define STRING_VALUE_OFFSET 8
#define STRING_COUNT_OFFSET 12
#define STRING_OFFSET_OFFSET 20
#define STRING_DATA_OFFSET 12

// Offsets within java.lang.Method.
#define METHOD_DEX_CACHE_METHODS_OFFSET 12

// Verified by object_test.
#define METHOD_QUICK_CODE_OFFSET_32 44
#define METHOD_QUICK_CODE_OFFSET_64 56
#define METHOD_PORTABLE_CODE_OFFSET_32 56
#define METHOD_PORTABLE_CODE_OFFSET_64 72

#else

// Offsets within java.lang.Class.
#define CLASS_COMPONENT_TYPE_OFFSET 20

// Array offsets.
#define ARRAY_LENGTH_OFFSET 16
#define OBJECT_ARRAY_DATA_OFFSET 20

// Offsets within java.lang.String.
#define STRING_VALUE_OFFSET 16
#define STRING_COUNT_OFFSET 20
#define STRING_OFFSET_OFFSET 28
#define STRING_DATA_OFFSET 20

// Offsets within java.lang.Method.
#define METHOD_DEX_CACHE_METHODS_OFFSET 20
#define METHOD_PORTABLE_CODE_OFFSET 48
#define METHOD_QUICK_CODE_OFFSET 56

#endif  // USE_BAKER_OR_BROOKS_READ_BARRIER

#endif  // ART_RUNTIME_ASM_SUPPORT_H_