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/*
* Copyright (C) 2015 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_COMPILER_UTILS_DEX_CACHE_ARRAYS_LAYOUT_INL_H_
#define ART_COMPILER_UTILS_DEX_CACHE_ARRAYS_LAYOUT_INL_H_
#include "dex_cache_arrays_layout.h"
#include "base/logging.h"
#include "globals.h"
#include "mirror/array-inl.h"
#include "primitive.h"
#include "utils.h"
namespace mirror {
class ArtMethod;
class Class;
class String;
} // namespace mirror
namespace art {
inline DexCacheArraysLayout::DexCacheArraysLayout(size_t pointer_size, const DexFile* dex_file)
: /* types_offset_ is always 0u */
pointer_size_(pointer_size),
methods_offset_(types_offset_ + TypesSize(dex_file->NumTypeIds())),
strings_offset_(methods_offset_ + MethodsSize(dex_file->NumMethodIds())),
fields_offset_(strings_offset_ + StringsSize(dex_file->NumStringIds())),
size_(fields_offset_ + FieldsSize(dex_file->NumFieldIds())) {
DCHECK(pointer_size == 4u || pointer_size == 8u);
}
inline size_t DexCacheArraysLayout::TypeOffset(uint32_t type_idx) const {
return types_offset_ + ElementOffset(sizeof(mirror::HeapReference<mirror::Class>), type_idx);
}
inline size_t DexCacheArraysLayout::TypesSize(size_t num_elements) const {
return ArraySize(sizeof(mirror::HeapReference<mirror::Class>), num_elements);
}
inline size_t DexCacheArraysLayout::MethodOffset(uint32_t method_idx) const {
return methods_offset_ + ElementOffset(
sizeof(mirror::HeapReference<mirror::ArtMethod>), method_idx);
}
inline size_t DexCacheArraysLayout::MethodsSize(size_t num_elements) const {
return ArraySize(sizeof(mirror::HeapReference<mirror::ArtMethod>), num_elements);
}
inline size_t DexCacheArraysLayout::StringOffset(uint32_t string_idx) const {
return strings_offset_ + ElementOffset(sizeof(mirror::HeapReference<mirror::String>), string_idx);
}
inline size_t DexCacheArraysLayout::StringsSize(size_t num_elements) const {
return ArraySize(sizeof(mirror::HeapReference<mirror::String>), num_elements);
}
inline size_t DexCacheArraysLayout::FieldOffset(uint32_t field_idx) const {
return fields_offset_ + ElementOffset(pointer_size_, field_idx);
}
inline size_t DexCacheArraysLayout::FieldsSize(size_t num_elements) const {
return ArraySize(pointer_size_, num_elements);
}
inline size_t DexCacheArraysLayout::ElementOffset(size_t element_size, uint32_t idx) {
return mirror::Array::DataOffset(element_size).Uint32Value() + element_size * idx;
}
inline size_t DexCacheArraysLayout::ArraySize(size_t element_size, uint32_t num_elements) {
size_t array_size = mirror::ComputeArraySize(num_elements, ComponentSizeShiftWidth(element_size));
DCHECK_NE(array_size, 0u); // No overflow expected for dex cache arrays.
return RoundUp(array_size, kObjectAlignment);
}
} // namespace art
#endif // ART_COMPILER_UTILS_DEX_CACHE_ARRAYS_LAYOUT_INL_H_
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