blob: dba5da0fb132eb6ca9ef5051eb429ac8f72e7bab [file] [log] [blame]
/*
* 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.
*
* Header file of an in-memory representation of DEX files.
*/
#include <stdint.h>
#include <queue>
#include <vector>
#include "dex_writer.h"
#include "utf.h"
namespace art {
size_t EncodeIntValue(int32_t value, uint8_t* buffer) {
size_t length = 0;
if (value >= 0) {
while (value > 0x7f) {
buffer[length++] = static_cast<uint8_t>(value);
value >>= 8;
}
} else {
while (value < -0x80) {
buffer[length++] = static_cast<uint8_t>(value);
value >>= 8;
}
}
buffer[length++] = static_cast<uint8_t>(value);
return length;
}
size_t EncodeUIntValue(uint32_t value, uint8_t* buffer) {
size_t length = 0;
do {
buffer[length++] = static_cast<uint8_t>(value);
value >>= 8;
} while (value != 0);
return length;
}
size_t EncodeLongValue(int64_t value, uint8_t* buffer) {
size_t length = 0;
if (value >= 0) {
while (value > 0x7f) {
buffer[length++] = static_cast<uint8_t>(value);
value >>= 8;
}
} else {
while (value < -0x80) {
buffer[length++] = static_cast<uint8_t>(value);
value >>= 8;
}
}
buffer[length++] = static_cast<uint8_t>(value);
return length;
}
union FloatUnion {
float f_;
uint32_t i_;
};
size_t EncodeFloatValue(float value, uint8_t* buffer) {
FloatUnion float_union;
float_union.f_ = value;
uint32_t int_value = float_union.i_;
size_t index = 3;
do {
buffer[index--] = int_value >> 24;
int_value <<= 8;
} while (int_value != 0);
return 3 - index;
}
union DoubleUnion {
double d_;
uint64_t l_;
};
size_t EncodeDoubleValue(double value, uint8_t* buffer) {
DoubleUnion double_union;
double_union.d_ = value;
uint64_t long_value = double_union.l_;
size_t index = 7;
do {
buffer[index--] = long_value >> 56;
long_value <<= 8;
} while (long_value != 0);
return 7 - index;
}
size_t DexWriter::Write(const void* buffer, size_t length, size_t offset) {
return dex_file_->PwriteFully(buffer, length, offset) ? length : 0;
}
size_t DexWriter::WriteSleb128(uint32_t value, size_t offset) {
uint8_t buffer[8];
EncodeSignedLeb128(buffer, value);
return Write(buffer, SignedLeb128Size(value), offset);
}
size_t DexWriter::WriteUleb128(uint32_t value, size_t offset) {
uint8_t buffer[8];
EncodeUnsignedLeb128(buffer, value);
return Write(buffer, UnsignedLeb128Size(value), offset);
}
size_t DexWriter::WriteEncodedValue(dex_ir::EncodedValue* encoded_value, size_t offset) {
size_t original_offset = offset;
size_t start = 0;
size_t length;
uint8_t buffer[8];
int8_t type = encoded_value->Type();
switch (type) {
case DexFile::kDexAnnotationByte:
length = EncodeIntValue(encoded_value->GetByte(), buffer);
break;
case DexFile::kDexAnnotationShort:
length = EncodeIntValue(encoded_value->GetShort(), buffer);
break;
case DexFile::kDexAnnotationChar:
length = EncodeUIntValue(encoded_value->GetChar(), buffer);
break;
case DexFile::kDexAnnotationInt:
length = EncodeIntValue(encoded_value->GetInt(), buffer);
break;
case DexFile::kDexAnnotationLong:
length = EncodeLongValue(encoded_value->GetLong(), buffer);
break;
case DexFile::kDexAnnotationFloat:
length = EncodeFloatValue(encoded_value->GetFloat(), buffer);
start = 4 - length;
break;
case DexFile::kDexAnnotationDouble:
length = EncodeDoubleValue(encoded_value->GetDouble(), buffer);
start = 8 - length;
break;
case DexFile::kDexAnnotationString:
length = EncodeUIntValue(encoded_value->GetStringId()->GetIndex(), buffer);
break;
case DexFile::kDexAnnotationType:
length = EncodeUIntValue(encoded_value->GetTypeId()->GetIndex(), buffer);
break;
case DexFile::kDexAnnotationField:
case DexFile::kDexAnnotationEnum:
length = EncodeUIntValue(encoded_value->GetFieldId()->GetIndex(), buffer);
break;
case DexFile::kDexAnnotationMethod:
length = EncodeUIntValue(encoded_value->GetMethodId()->GetIndex(), buffer);
break;
case DexFile::kDexAnnotationArray:
offset += WriteEncodedValueHeader(type, 0, offset);
offset += WriteEncodedArray(encoded_value->GetEncodedArray()->GetEncodedValues(), offset);
return offset - original_offset;
case DexFile::kDexAnnotationAnnotation:
offset += WriteEncodedValueHeader(type, 0, offset);
offset += WriteEncodedAnnotation(encoded_value->GetEncodedAnnotation(), offset);
return offset - original_offset;
case DexFile::kDexAnnotationNull:
return WriteEncodedValueHeader(type, 0, offset);
case DexFile::kDexAnnotationBoolean:
return WriteEncodedValueHeader(type, encoded_value->GetBoolean() ? 1 : 0, offset);
default:
return 0;
}
offset += WriteEncodedValueHeader(type, length - 1, offset);
offset += Write(buffer + start, length, offset);
return offset - original_offset;
}
size_t DexWriter::WriteEncodedValueHeader(int8_t value_type, size_t value_arg, size_t offset) {
uint8_t buffer[1] = { static_cast<uint8_t>((value_arg << 5) | value_type) };
return Write(buffer, sizeof(uint8_t), offset);
}
size_t DexWriter::WriteEncodedArray(dex_ir::EncodedValueVector* values, size_t offset) {
size_t original_offset = offset;
offset += WriteUleb128(values->size(), offset);
for (std::unique_ptr<dex_ir::EncodedValue>& value : *values) {
offset += WriteEncodedValue(value.get(), offset);
}
return offset - original_offset;
}
size_t DexWriter::WriteEncodedAnnotation(dex_ir::EncodedAnnotation* annotation, size_t offset) {
size_t original_offset = offset;
offset += WriteUleb128(annotation->GetType()->GetIndex(), offset);
offset += WriteUleb128(annotation->GetAnnotationElements()->size(), offset);
for (std::unique_ptr<dex_ir::AnnotationElement>& annotation_element :
*annotation->GetAnnotationElements()) {
offset += WriteUleb128(annotation_element->GetName()->GetIndex(), offset);
offset += WriteEncodedValue(annotation_element->GetValue(), offset);
}
return offset - original_offset;
}
size_t DexWriter::WriteEncodedFields(dex_ir::FieldItemVector* fields, size_t offset) {
size_t original_offset = offset;
uint32_t prev_index = 0;
for (std::unique_ptr<dex_ir::FieldItem>& field : *fields) {
uint32_t index = field->GetFieldId()->GetIndex();
offset += WriteUleb128(index - prev_index, offset);
offset += WriteUleb128(field->GetAccessFlags(), offset);
prev_index = index;
}
return offset - original_offset;
}
size_t DexWriter::WriteEncodedMethods(dex_ir::MethodItemVector* methods, size_t offset) {
size_t original_offset = offset;
uint32_t prev_index = 0;
for (std::unique_ptr<dex_ir::MethodItem>& method : *methods) {
uint32_t index = method->GetMethodId()->GetIndex();
uint32_t code_off = method->GetCodeItem() == nullptr ? 0 : method->GetCodeItem()->GetOffset();
offset += WriteUleb128(index - prev_index, offset);
offset += WriteUleb128(method->GetAccessFlags(), offset);
offset += WriteUleb128(code_off, offset);
prev_index = index;
}
return offset - original_offset;
}
void DexWriter::WriteStrings() {
uint32_t string_data_off[1];
for (std::unique_ptr<dex_ir::StringId>& string_id : header_.GetCollections().StringIds()) {
string_data_off[0] = string_id->DataItem()->GetOffset();
Write(string_data_off, string_id->GetSize(), string_id->GetOffset());
}
for (std::unique_ptr<dex_ir::StringData>& string_data : header_.GetCollections().StringDatas()) {
uint32_t offset = string_data->GetOffset();
offset += WriteUleb128(CountModifiedUtf8Chars(string_data->Data()), offset);
Write(string_data->Data(), strlen(string_data->Data()), offset);
}
}
void DexWriter::WriteTypes() {
uint32_t descriptor_idx[1];
for (std::unique_ptr<dex_ir::TypeId>& type_id : header_.GetCollections().TypeIds()) {
descriptor_idx[0] = type_id->GetStringId()->GetIndex();
Write(descriptor_idx, type_id->GetSize(), type_id->GetOffset());
}
}
void DexWriter::WriteTypeLists() {
uint32_t size[1];
uint16_t list[1];
for (std::unique_ptr<dex_ir::TypeList>& type_list : header_.GetCollections().TypeLists()) {
size[0] = type_list->GetTypeList()->size();
uint32_t offset = type_list->GetOffset();
offset += Write(size, sizeof(uint32_t), offset);
for (const dex_ir::TypeId* type_id : *type_list->GetTypeList()) {
list[0] = type_id->GetIndex();
offset += Write(list, sizeof(uint16_t), offset);
}
}
}
void DexWriter::WriteProtos() {
uint32_t buffer[3];
for (std::unique_ptr<dex_ir::ProtoId>& proto_id : header_.GetCollections().ProtoIds()) {
buffer[0] = proto_id->Shorty()->GetIndex();
buffer[1] = proto_id->ReturnType()->GetIndex();
buffer[2] = proto_id->Parameters() == nullptr ? 0 : proto_id->Parameters()->GetOffset();
Write(buffer, proto_id->GetSize(), proto_id->GetOffset());
}
}
void DexWriter::WriteFields() {
uint16_t buffer[4];
for (std::unique_ptr<dex_ir::FieldId>& field_id : header_.GetCollections().FieldIds()) {
buffer[0] = field_id->Class()->GetIndex();
buffer[1] = field_id->Type()->GetIndex();
buffer[2] = field_id->Name()->GetIndex();
buffer[3] = field_id->Name()->GetIndex() >> 16;
Write(buffer, field_id->GetSize(), field_id->GetOffset());
}
}
void DexWriter::WriteMethods() {
uint16_t buffer[4];
for (std::unique_ptr<dex_ir::MethodId>& method_id : header_.GetCollections().MethodIds()) {
buffer[0] = method_id->Class()->GetIndex();
buffer[1] = method_id->Proto()->GetIndex();
buffer[2] = method_id->Name()->GetIndex();
buffer[3] = method_id->Name()->GetIndex() >> 16;
Write(buffer, method_id->GetSize(), method_id->GetOffset());
}
}
void DexWriter::WriteEncodedArrays() {
for (std::unique_ptr<dex_ir::EncodedArrayItem>& encoded_array :
header_.GetCollections().EncodedArrayItems()) {
WriteEncodedArray(encoded_array->GetEncodedValues(), encoded_array->GetOffset());
}
}
void DexWriter::WriteAnnotations() {
uint8_t visibility[1];
for (std::unique_ptr<dex_ir::AnnotationItem>& annotation :
header_.GetCollections().AnnotationItems()) {
visibility[0] = annotation->GetVisibility();
size_t offset = annotation->GetOffset();
offset += Write(visibility, sizeof(uint8_t), offset);
WriteEncodedAnnotation(annotation->GetAnnotation(), offset);
}
}
void DexWriter::WriteAnnotationSets() {
uint32_t size[1];
uint32_t annotation_off[1];
for (std::unique_ptr<dex_ir::AnnotationSetItem>& annotation_set :
header_.GetCollections().AnnotationSetItems()) {
size[0] = annotation_set->GetItems()->size();
size_t offset = annotation_set->GetOffset();
offset += Write(size, sizeof(uint32_t), offset);
for (dex_ir::AnnotationItem* annotation : *annotation_set->GetItems()) {
annotation_off[0] = annotation->GetOffset();
offset += Write(annotation_off, sizeof(uint32_t), offset);
}
}
}
void DexWriter::WriteAnnotationSetRefs() {
uint32_t size[1];
uint32_t annotations_off[1];
for (std::unique_ptr<dex_ir::AnnotationSetRefList>& annotation_set_ref :
header_.GetCollections().AnnotationSetRefLists()) {
size[0] = annotation_set_ref->GetItems()->size();
size_t offset = annotation_set_ref->GetOffset();
offset += Write(size, sizeof(uint32_t), offset);
for (dex_ir::AnnotationSetItem* annotation_set : *annotation_set_ref->GetItems()) {
annotations_off[0] = annotation_set == nullptr ? 0 : annotation_set->GetOffset();
offset += Write(annotations_off, sizeof(uint32_t), offset);
}
}
}
void DexWriter::WriteAnnotationsDirectories() {
uint32_t directory_buffer[4];
uint32_t annotation_buffer[2];
for (std::unique_ptr<dex_ir::AnnotationsDirectoryItem>& annotations_directory :
header_.GetCollections().AnnotationsDirectoryItems()) {
directory_buffer[0] = annotations_directory->GetClassAnnotation() == nullptr ? 0 :
annotations_directory->GetClassAnnotation()->GetOffset();
directory_buffer[1] = annotations_directory->GetFieldAnnotations() == nullptr ? 0 :
annotations_directory->GetFieldAnnotations()->size();
directory_buffer[2] = annotations_directory->GetMethodAnnotations() == nullptr ? 0 :
annotations_directory->GetMethodAnnotations()->size();
directory_buffer[3] = annotations_directory->GetParameterAnnotations() == nullptr ? 0 :
annotations_directory->GetParameterAnnotations()->size();
uint32_t offset = annotations_directory->GetOffset();
offset += Write(directory_buffer, 4 * sizeof(uint32_t), offset);
if (annotations_directory->GetFieldAnnotations() != nullptr) {
for (std::unique_ptr<dex_ir::FieldAnnotation>& field :
*annotations_directory->GetFieldAnnotations()) {
annotation_buffer[0] = field->GetFieldId()->GetIndex();
annotation_buffer[1] = field->GetAnnotationSetItem()->GetOffset();
offset += Write(annotation_buffer, 2 * sizeof(uint32_t), offset);
}
}
if (annotations_directory->GetMethodAnnotations() != nullptr) {
for (std::unique_ptr<dex_ir::MethodAnnotation>& method :
*annotations_directory->GetMethodAnnotations()) {
annotation_buffer[0] = method->GetMethodId()->GetIndex();
annotation_buffer[1] = method->GetAnnotationSetItem()->GetOffset();
offset += Write(annotation_buffer, 2 * sizeof(uint32_t), offset);
}
}
if (annotations_directory->GetParameterAnnotations() != nullptr) {
for (std::unique_ptr<dex_ir::ParameterAnnotation>& parameter :
*annotations_directory->GetParameterAnnotations()) {
annotation_buffer[0] = parameter->GetMethodId()->GetIndex();
annotation_buffer[1] = parameter->GetAnnotations()->GetOffset();
offset += Write(annotation_buffer, 2 * sizeof(uint32_t), offset);
}
}
}
}
void DexWriter::WriteDebugInfoItems() {
for (std::unique_ptr<dex_ir::DebugInfoItem>& info : header_.GetCollections().DebugInfoItems()) {
Write(info->GetDebugInfo(), info->GetDebugInfoSize(), info->GetOffset());
}
}
void DexWriter::WriteCodeItems() {
uint16_t uint16_buffer[4];
uint32_t uint32_buffer[2];
for (std::unique_ptr<dex_ir::CodeItem>& code_item : header_.GetCollections().CodeItems()) {
uint16_buffer[0] = code_item->RegistersSize();
uint16_buffer[1] = code_item->InsSize();
uint16_buffer[2] = code_item->OutsSize();
uint16_buffer[3] = code_item->TriesSize();
uint32_buffer[0] = code_item->DebugInfo() == nullptr ? 0 : code_item->DebugInfo()->GetOffset();
uint32_buffer[1] = code_item->InsnsSize();
size_t offset = code_item->GetOffset();
offset += Write(uint16_buffer, 4 * sizeof(uint16_t), offset);
offset += Write(uint32_buffer, 2 * sizeof(uint32_t), offset);
offset += Write(code_item->Insns(), code_item->InsnsSize() * sizeof(uint16_t), offset);
if (code_item->TriesSize() != 0) {
if (code_item->InsnsSize() % 2 != 0) {
uint16_t padding[1] = { 0 };
offset += Write(padding, sizeof(uint16_t), offset);
}
uint32_t start_addr[1];
uint16_t insn_count_and_handler_off[2];
for (std::unique_ptr<const dex_ir::TryItem>& try_item : *code_item->Tries()) {
start_addr[0] = try_item->StartAddr();
insn_count_and_handler_off[0] = try_item->InsnCount();
insn_count_and_handler_off[1] = try_item->GetHandlers()->GetListOffset();
offset += Write(start_addr, sizeof(uint32_t), offset);
offset += Write(insn_count_and_handler_off, 2 * sizeof(uint16_t), offset);
}
// Leave offset pointing to the end of the try items.
WriteUleb128(code_item->Handlers()->size(), offset);
for (std::unique_ptr<const dex_ir::CatchHandler>& handlers : *code_item->Handlers()) {
size_t list_offset = offset + handlers->GetListOffset();
uint32_t size = handlers->HasCatchAll() ? (handlers->GetHandlers()->size() - 1) * -1 :
handlers->GetHandlers()->size();
list_offset += WriteSleb128(size, list_offset);
for (std::unique_ptr<const dex_ir::TypeAddrPair>& handler : *handlers->GetHandlers()) {
if (handler->GetTypeId() != nullptr) {
list_offset += WriteUleb128(handler->GetTypeId()->GetIndex(), list_offset);
}
list_offset += WriteUleb128(handler->GetAddress(), list_offset);
}
}
}
}
}
void DexWriter::WriteClasses() {
uint32_t class_def_buffer[8];
for (std::unique_ptr<dex_ir::ClassDef>& class_def : header_.GetCollections().ClassDefs()) {
class_def_buffer[0] = class_def->ClassType()->GetIndex();
class_def_buffer[1] = class_def->GetAccessFlags();
class_def_buffer[2] = class_def->Superclass() == nullptr ? DexFile::kDexNoIndex :
class_def->Superclass()->GetIndex();
class_def_buffer[3] = class_def->InterfacesOffset();
class_def_buffer[4] = class_def->SourceFile() == nullptr ? DexFile::kDexNoIndex :
class_def->SourceFile()->GetIndex();
class_def_buffer[5] = class_def->Annotations() == nullptr ? 0 :
class_def->Annotations()->GetOffset();
class_def_buffer[6] = class_def->GetClassData() == nullptr ? 0 :
class_def->GetClassData()->GetOffset();
class_def_buffer[7] = class_def->StaticValues() == nullptr ? 0 :
class_def->StaticValues()->GetOffset();
size_t offset = class_def->GetOffset();
Write(class_def_buffer, class_def->GetSize(), offset);
}
for (std::unique_ptr<dex_ir::ClassData>& class_data : header_.GetCollections().ClassDatas()) {
size_t offset = class_data->GetOffset();
offset += WriteUleb128(class_data->StaticFields()->size(), offset);
offset += WriteUleb128(class_data->InstanceFields()->size(), offset);
offset += WriteUleb128(class_data->DirectMethods()->size(), offset);
offset += WriteUleb128(class_data->VirtualMethods()->size(), offset);
offset += WriteEncodedFields(class_data->StaticFields(), offset);
offset += WriteEncodedFields(class_data->InstanceFields(), offset);
offset += WriteEncodedMethods(class_data->DirectMethods(), offset);
offset += WriteEncodedMethods(class_data->VirtualMethods(), offset);
}
}
struct MapItemContainer {
MapItemContainer(uint32_t type, uint32_t size, uint32_t offset)
: type_(type), size_(size), offset_(offset) { }
bool operator<(const MapItemContainer& other) const {
return offset_ > other.offset_;
}
uint32_t type_;
uint32_t size_;
uint32_t offset_;
};
void DexWriter::WriteMapItem() {
dex_ir::Collections& collection = header_.GetCollections();
std::priority_queue<MapItemContainer> queue;
// Header and index section.
queue.push(MapItemContainer(DexFile::kDexTypeHeaderItem, 1, 0));
if (collection.StringIdsSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeStringIdItem, collection.StringIdsSize(),
collection.StringIdsOffset()));
}
if (collection.TypeIdsSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeTypeIdItem, collection.TypeIdsSize(),
collection.TypeIdsOffset()));
}
if (collection.ProtoIdsSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeProtoIdItem, collection.ProtoIdsSize(),
collection.ProtoIdsOffset()));
}
if (collection.FieldIdsSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeFieldIdItem, collection.FieldIdsSize(),
collection.FieldIdsOffset()));
}
if (collection.MethodIdsSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeMethodIdItem, collection.MethodIdsSize(),
collection.MethodIdsOffset()));
}
if (collection.ClassDefsSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeClassDefItem, collection.ClassDefsSize(),
collection.ClassDefsOffset()));
}
// Data section.
queue.push(MapItemContainer(DexFile::kDexTypeMapList, 1, collection.MapItemOffset()));
if (collection.TypeListsSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeTypeList, collection.TypeListsSize(),
collection.TypeListsOffset()));
}
if (collection.AnnotationSetRefListsSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeAnnotationSetRefList,
collection.AnnotationSetRefListsSize(), collection.AnnotationSetRefListsOffset()));
}
if (collection.AnnotationSetItemsSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeAnnotationSetItem,
collection.AnnotationSetItemsSize(), collection.AnnotationSetItemsOffset()));
}
if (collection.ClassDatasSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeClassDataItem, collection.ClassDatasSize(),
collection.ClassDatasOffset()));
}
if (collection.CodeItemsSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeCodeItem, collection.CodeItemsSize(),
collection.CodeItemsOffset()));
}
if (collection.StringDatasSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeStringDataItem, collection.StringDatasSize(),
collection.StringDatasOffset()));
}
if (collection.DebugInfoItemsSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeDebugInfoItem, collection.DebugInfoItemsSize(),
collection.DebugInfoItemsOffset()));
}
if (collection.AnnotationItemsSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeAnnotationItem, collection.AnnotationItemsSize(),
collection.AnnotationItemsOffset()));
}
if (collection.EncodedArrayItemsSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeEncodedArrayItem,
collection.EncodedArrayItemsSize(), collection.EncodedArrayItemsOffset()));
}
if (collection.AnnotationsDirectoryItemsSize() != 0) {
queue.push(MapItemContainer(DexFile::kDexTypeAnnotationsDirectoryItem,
collection.AnnotationsDirectoryItemsSize(), collection.AnnotationsDirectoryItemsOffset()));
}
uint32_t offset = collection.MapItemOffset();
uint16_t uint16_buffer[2];
uint32_t uint32_buffer[2];
uint16_buffer[1] = 0;
uint32_buffer[0] = queue.size();
offset += Write(uint32_buffer, sizeof(uint32_t), offset);
while (!queue.empty()) {
const MapItemContainer& map_item = queue.top();
uint16_buffer[0] = map_item.type_;
uint32_buffer[0] = map_item.size_;
uint32_buffer[1] = map_item.offset_;
offset += Write(uint16_buffer, 2 * sizeof(uint16_t), offset);
offset += Write(uint32_buffer, 2 * sizeof(uint32_t), offset);
queue.pop();
}
}
void DexWriter::WriteHeader() {
uint32_t buffer[20];
dex_ir::Collections& collections = header_.GetCollections();
size_t offset = 0;
offset += Write(header_.Magic(), 8 * sizeof(uint8_t), offset);
buffer[0] = header_.Checksum();
offset += Write(buffer, sizeof(uint32_t), offset);
offset += Write(header_.Signature(), 20 * sizeof(uint8_t), offset);
uint32_t file_size = header_.FileSize();
buffer[0] = file_size;
buffer[1] = header_.GetSize();
buffer[2] = header_.EndianTag();
buffer[3] = header_.LinkSize();
buffer[4] = header_.LinkOffset();
buffer[5] = collections.MapItemOffset();
buffer[6] = collections.StringIdsSize();
buffer[7] = collections.StringIdsOffset();
buffer[8] = collections.TypeIdsSize();
buffer[9] = collections.TypeIdsOffset();
buffer[10] = collections.ProtoIdsSize();
buffer[11] = collections.ProtoIdsOffset();
buffer[12] = collections.FieldIdsSize();
buffer[13] = collections.FieldIdsOffset();
buffer[14] = collections.MethodIdsSize();
buffer[15] = collections.MethodIdsOffset();
uint32_t class_defs_size = collections.ClassDefsSize();
uint32_t class_defs_off = collections.ClassDefsOffset();
buffer[16] = class_defs_size;
buffer[17] = class_defs_off;
uint32_t data_off = class_defs_off + class_defs_size * dex_ir::ClassDef::ItemSize();
uint32_t data_size = file_size - data_off;
buffer[18] = data_size;
buffer[19] = data_off;
Write(buffer, 20 * sizeof(uint32_t), offset);
}
void DexWriter::WriteFile() {
if (dex_file_.get() == nullptr) {
fprintf(stderr, "Can't open output dex file\n");
return;
}
WriteStrings();
WriteTypes();
WriteTypeLists();
WriteProtos();
WriteFields();
WriteMethods();
WriteEncodedArrays();
WriteAnnotations();
WriteAnnotationSets();
WriteAnnotationSetRefs();
WriteAnnotationsDirectories();
WriteDebugInfoItems();
WriteCodeItems();
WriteClasses();
WriteMapItem();
WriteHeader();
}
void DexWriter::OutputDexFile(dex_ir::Header& header, const char* file_name) {
(new DexWriter(header, file_name))->WriteFile();
}
} // namespace art