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/*
* Copyright (C) 2016 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.
*
* Implementation file of the dexlayout utility.
*
* This is a tool to read dex files into an internal representation,
* reorganize the representation, and emit dex files with a better
* file layout.
*/
#include "dex_ir.h"
#include "dex/code_item_accessors-inl.h"
#include "dex/dex_file_exception_helpers.h"
#include "dex/dex_instruction-inl.h"
#include "dex_ir_builder.h"
namespace art {
namespace dex_ir {
static uint32_t HeaderOffset(const dex_ir::Header* header ATTRIBUTE_UNUSED) {
return 0;
}
static uint32_t HeaderSize(const dex_ir::Header* header ATTRIBUTE_UNUSED) {
// Size is in elements, so there is only one header.
return 1;
}
// The description of each dex file section type.
struct FileSectionDescriptor {
public:
std::string name;
uint16_t type;
// A function that when applied to a collection object, gives the size of the section.
std::function<uint32_t(dex_ir::Header*)> size_fn;
// A function that when applied to a collection object, gives the offset of the section.
std::function<uint32_t(dex_ir::Header*)> offset_fn;
};
static const FileSectionDescriptor kFileSectionDescriptors[] = {
{
"Header",
DexFile::kDexTypeHeaderItem,
&HeaderSize,
&HeaderOffset,
}, {
"StringId",
DexFile::kDexTypeStringIdItem,
[](const dex_ir::Header* h) { return h->StringIds().Size(); },
[](const dex_ir::Header* h) { return h->StringIds().GetOffset(); }
}, {
"TypeId",
DexFile::kDexTypeTypeIdItem,
[](const dex_ir::Header* h) { return h->TypeIds().Size(); },
[](const dex_ir::Header* h) { return h->TypeIds().GetOffset(); }
}, {
"ProtoId",
DexFile::kDexTypeProtoIdItem,
[](const dex_ir::Header* h) { return h->ProtoIds().Size(); },
[](const dex_ir::Header* h) { return h->ProtoIds().GetOffset(); }
}, {
"FieldId",
DexFile::kDexTypeFieldIdItem,
[](const dex_ir::Header* h) { return h->FieldIds().Size(); },
[](const dex_ir::Header* h) { return h->FieldIds().GetOffset(); }
}, {
"MethodId",
DexFile::kDexTypeMethodIdItem,
[](const dex_ir::Header* h) { return h->MethodIds().Size(); },
[](const dex_ir::Header* h) { return h->MethodIds().GetOffset(); }
}, {
"ClassDef",
DexFile::kDexTypeClassDefItem,
[](const dex_ir::Header* h) { return h->ClassDefs().Size(); },
[](const dex_ir::Header* h) { return h->ClassDefs().GetOffset(); }
}, {
"CallSiteId",
DexFile::kDexTypeCallSiteIdItem,
[](const dex_ir::Header* h) { return h->CallSiteIds().Size(); },
[](const dex_ir::Header* h) { return h->CallSiteIds().GetOffset(); }
}, {
"MethodHandle",
DexFile::kDexTypeMethodHandleItem,
[](const dex_ir::Header* h) { return h->MethodHandleItems().Size(); },
[](const dex_ir::Header* h) { return h->MethodHandleItems().GetOffset(); }
}, {
"StringData",
DexFile::kDexTypeStringDataItem,
[](const dex_ir::Header* h) { return h->StringDatas().Size(); },
[](const dex_ir::Header* h) { return h->StringDatas().GetOffset(); }
}, {
"TypeList",
DexFile::kDexTypeTypeList,
[](const dex_ir::Header* h) { return h->TypeLists().Size(); },
[](const dex_ir::Header* h) { return h->TypeLists().GetOffset(); }
}, {
"EncArr",
DexFile::kDexTypeEncodedArrayItem,
[](const dex_ir::Header* h) { return h->EncodedArrayItems().Size(); },
[](const dex_ir::Header* h) { return h->EncodedArrayItems().GetOffset(); }
}, {
"Annotation",
DexFile::kDexTypeAnnotationItem,
[](const dex_ir::Header* h) { return h->AnnotationItems().Size(); },
[](const dex_ir::Header* h) { return h->AnnotationItems().GetOffset(); }
}, {
"AnnoSet",
DexFile::kDexTypeAnnotationSetItem,
[](const dex_ir::Header* h) { return h->AnnotationSetItems().Size(); },
[](const dex_ir::Header* h) { return h->AnnotationSetItems().GetOffset(); }
}, {
"AnnoSetRL",
DexFile::kDexTypeAnnotationSetRefList,
[](const dex_ir::Header* h) { return h->AnnotationSetRefLists().Size(); },
[](const dex_ir::Header* h) { return h->AnnotationSetRefLists().GetOffset(); }
}, {
"AnnoDir",
DexFile::kDexTypeAnnotationsDirectoryItem,
[](const dex_ir::Header* h) { return h->AnnotationsDirectoryItems().Size(); },
[](const dex_ir::Header* h) { return h->AnnotationsDirectoryItems().GetOffset(); }
}, {
"DebugInfo",
DexFile::kDexTypeDebugInfoItem,
[](const dex_ir::Header* h) { return h->DebugInfoItems().Size(); },
[](const dex_ir::Header* h) { return h->DebugInfoItems().GetOffset(); }
}, {
"CodeItem",
DexFile::kDexTypeCodeItem,
[](const dex_ir::Header* h) { return h->CodeItems().Size(); },
[](const dex_ir::Header* h) { return h->CodeItems().GetOffset(); }
}, {
"ClassData",
DexFile::kDexTypeClassDataItem,
[](const dex_ir::Header* h) { return h->ClassDatas().Size(); },
[](const dex_ir::Header* h) { return h->ClassDatas().GetOffset(); }
}
};
std::vector<dex_ir::DexFileSection> GetSortedDexFileSections(dex_ir::Header* header,
dex_ir::SortDirection direction) {
std::vector<dex_ir::DexFileSection> sorted_sections;
// Build the table that will map from offset to color
for (const FileSectionDescriptor& s : kFileSectionDescriptors) {
sorted_sections.push_back(dex_ir::DexFileSection(s.name,
s.type,
s.size_fn(header),
s.offset_fn(header)));
}
// Sort by offset.
std::sort(sorted_sections.begin(),
sorted_sections.end(),
[=](dex_ir::DexFileSection& a, dex_ir::DexFileSection& b) {
if (direction == SortDirection::kSortDescending) {
return a.offset > b.offset;
} else {
return a.offset < b.offset;
}
});
return sorted_sections;
}
} // namespace dex_ir
} // namespace art
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