| /* |
| * 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. |
| */ |
| |
| #include "oat_writer.h" |
| |
| #include <algorithm> |
| #include <unistd.h> |
| #include <zlib.h> |
| |
| #include "arch/arm64/instruction_set_features_arm64.h" |
| #include "art_method-inl.h" |
| #include "base/allocator.h" |
| #include "base/bit_vector-inl.h" |
| #include "base/enums.h" |
| #include "base/file_magic.h" |
| #include "base/stl_util.h" |
| #include "base/unix_file/fd_file.h" |
| #include "class_linker.h" |
| #include "class_table-inl.h" |
| #include "compiled_method-inl.h" |
| #include "debug/method_debug_info.h" |
| #include "dex/verification_results.h" |
| #include "dex_file-inl.h" |
| #include "dex_file_loader.h" |
| #include "dex_file_types.h" |
| #include "dexlayout.h" |
| #include "driver/compiler_driver-inl.h" |
| #include "driver/compiler_options.h" |
| #include "gc/space/image_space.h" |
| #include "gc/space/space.h" |
| #include "handle_scope-inl.h" |
| #include "image_writer.h" |
| #include "linker/buffered_output_stream.h" |
| #include "linker/file_output_stream.h" |
| #include "linker/linker_patch.h" |
| #include "linker/method_bss_mapping_encoder.h" |
| #include "linker/multi_oat_relative_patcher.h" |
| #include "linker/output_stream.h" |
| #include "mirror/array.h" |
| #include "mirror/class_loader.h" |
| #include "mirror/dex_cache-inl.h" |
| #include "mirror/object-inl.h" |
| #include "standard_dex_file.h" |
| #include "oat_quick_method_header.h" |
| #include "os.h" |
| #include "safe_map.h" |
| #include "scoped_thread_state_change-inl.h" |
| #include "type_lookup_table.h" |
| #include "utils/dex_cache_arrays_layout-inl.h" |
| #include "vdex_file.h" |
| #include "verifier/verifier_deps.h" |
| #include "zip_archive.h" |
| |
| namespace art { |
| namespace linker { |
| |
| namespace { // anonymous namespace |
| |
| // If we write dex layout info in the oat file. |
| static constexpr bool kWriteDexLayoutInfo = true; |
| |
| // Force the OAT method layout to be sorted-by-name instead of |
| // the default (class_def_idx, method_idx). |
| // |
| // Otherwise if profiles are used, that will act as |
| // the primary sort order. |
| // |
| // A bit easier to use for development since oatdump can easily |
| // show that things are being re-ordered when two methods aren't adjacent. |
| static constexpr bool kOatWriterForceOatCodeLayout = false; |
| |
| static constexpr bool kOatWriterDebugOatCodeLayout = false; |
| |
| typedef DexFile::Header __attribute__((aligned(1))) UnalignedDexFileHeader; |
| |
| const UnalignedDexFileHeader* AsUnalignedDexFileHeader(const uint8_t* raw_data) { |
| return reinterpret_cast<const UnalignedDexFileHeader*>(raw_data); |
| } |
| |
| class ChecksumUpdatingOutputStream : public OutputStream { |
| public: |
| ChecksumUpdatingOutputStream(OutputStream* out, OatHeader* oat_header) |
| : OutputStream(out->GetLocation()), out_(out), oat_header_(oat_header) { } |
| |
| bool WriteFully(const void* buffer, size_t byte_count) OVERRIDE { |
| oat_header_->UpdateChecksum(buffer, byte_count); |
| return out_->WriteFully(buffer, byte_count); |
| } |
| |
| off_t Seek(off_t offset, Whence whence) OVERRIDE { |
| return out_->Seek(offset, whence); |
| } |
| |
| bool Flush() OVERRIDE { |
| return out_->Flush(); |
| } |
| |
| private: |
| OutputStream* const out_; |
| OatHeader* const oat_header_; |
| }; |
| |
| inline uint32_t CodeAlignmentSize(uint32_t header_offset, const CompiledMethod& compiled_method) { |
| // We want to align the code rather than the preheader. |
| uint32_t unaligned_code_offset = header_offset + sizeof(OatQuickMethodHeader); |
| uint32_t aligned_code_offset = compiled_method.AlignCode(unaligned_code_offset); |
| return aligned_code_offset - unaligned_code_offset; |
| } |
| |
| } // anonymous namespace |
| |
| // Defines the location of the raw dex file to write. |
| class OatWriter::DexFileSource { |
| public: |
| enum Type { |
| kNone, |
| kZipEntry, |
| kRawFile, |
| kRawData, |
| }; |
| |
| explicit DexFileSource(ZipEntry* zip_entry) |
| : type_(kZipEntry), source_(zip_entry) { |
| DCHECK(source_ != nullptr); |
| } |
| |
| explicit DexFileSource(File* raw_file) |
| : type_(kRawFile), source_(raw_file) { |
| DCHECK(source_ != nullptr); |
| } |
| |
| explicit DexFileSource(const uint8_t* dex_file) |
| : type_(kRawData), source_(dex_file) { |
| DCHECK(source_ != nullptr); |
| } |
| |
| Type GetType() const { return type_; } |
| bool IsZipEntry() const { return type_ == kZipEntry; } |
| bool IsRawFile() const { return type_ == kRawFile; } |
| bool IsRawData() const { return type_ == kRawData; } |
| |
| ZipEntry* GetZipEntry() const { |
| DCHECK(IsZipEntry()); |
| DCHECK(source_ != nullptr); |
| return static_cast<ZipEntry*>(const_cast<void*>(source_)); |
| } |
| |
| File* GetRawFile() const { |
| DCHECK(IsRawFile()); |
| DCHECK(source_ != nullptr); |
| return static_cast<File*>(const_cast<void*>(source_)); |
| } |
| |
| const uint8_t* GetRawData() const { |
| DCHECK(IsRawData()); |
| DCHECK(source_ != nullptr); |
| return static_cast<const uint8_t*>(source_); |
| } |
| |
| void Clear() { |
| type_ = kNone; |
| source_ = nullptr; |
| } |
| |
| private: |
| Type type_; |
| const void* source_; |
| }; |
| |
| // OatClassHeader is the header only part of the oat class that is required even when compilation |
| // is not enabled. |
| class OatWriter::OatClassHeader { |
| public: |
| OatClassHeader(uint32_t offset, |
| uint32_t num_non_null_compiled_methods, |
| uint32_t num_methods, |
| mirror::Class::Status status) |
| : status_(status), |
| offset_(offset) { |
| // We just arbitrarily say that 0 methods means kOatClassNoneCompiled and that we won't use |
| // kOatClassAllCompiled unless there is at least one compiled method. This means in an |
| // interpreter only system, we can assert that all classes are kOatClassNoneCompiled. |
| if (num_non_null_compiled_methods == 0) { |
| type_ = kOatClassNoneCompiled; |
| } else if (num_non_null_compiled_methods == num_methods) { |
| type_ = kOatClassAllCompiled; |
| } else { |
| type_ = kOatClassSomeCompiled; |
| } |
| } |
| |
| bool Write(OatWriter* oat_writer, OutputStream* out, const size_t file_offset) const; |
| |
| static size_t SizeOf() { |
| return sizeof(status_) + sizeof(type_); |
| } |
| |
| // Data to write. |
| static_assert(mirror::Class::Status::kStatusMax < (1 << 16), "class status won't fit in 16bits"); |
| int16_t status_; |
| |
| static_assert(OatClassType::kOatClassMax < (1 << 16), "oat_class type won't fit in 16bits"); |
| uint16_t type_; |
| |
| // Offset of start of OatClass from beginning of OatHeader. It is |
| // used to validate file position when writing. |
| uint32_t offset_; |
| }; |
| |
| // The actual oat class body contains the information about compiled methods. It is only required |
| // for compiler filters that have any compilation. |
| class OatWriter::OatClass { |
| public: |
| OatClass(const dchecked_vector<CompiledMethod*>& compiled_methods, |
| uint32_t compiled_methods_with_code, |
| uint16_t oat_class_type); |
| OatClass(OatClass&& src) = default; |
| size_t SizeOf() const; |
| bool Write(OatWriter* oat_writer, OutputStream* out) const; |
| |
| CompiledMethod* GetCompiledMethod(size_t class_def_method_index) const { |
| return compiled_methods_[class_def_method_index]; |
| } |
| |
| // CompiledMethods for each class_def_method_index, or null if no method is available. |
| dchecked_vector<CompiledMethod*> compiled_methods_; |
| |
| // Offset from OatClass::offset_ to the OatMethodOffsets for the |
| // class_def_method_index. If 0, it means the corresponding |
| // CompiledMethod entry in OatClass::compiled_methods_ should be |
| // null and that the OatClass::type_ should be kOatClassBitmap. |
| dchecked_vector<uint32_t> oat_method_offsets_offsets_from_oat_class_; |
| |
| // Data to write. |
| uint32_t method_bitmap_size_; |
| |
| // bit vector indexed by ClassDef method index. When |
| // OatClassType::type_ is kOatClassBitmap, a set bit indicates the |
| // method has an OatMethodOffsets in methods_offsets_, otherwise |
| // the entry was ommited to save space. If OatClassType::type_ is |
| // not is kOatClassBitmap, the bitmap will be null. |
| std::unique_ptr<BitVector> method_bitmap_; |
| |
| // OatMethodOffsets and OatMethodHeaders for each CompiledMethod |
| // present in the OatClass. Note that some may be missing if |
| // OatClass::compiled_methods_ contains null values (and |
| // oat_method_offsets_offsets_from_oat_class_ should contain 0 |
| // values in this case). |
| dchecked_vector<OatMethodOffsets> method_offsets_; |
| dchecked_vector<OatQuickMethodHeader> method_headers_; |
| |
| private: |
| size_t GetMethodOffsetsRawSize() const { |
| return method_offsets_.size() * sizeof(method_offsets_[0]); |
| } |
| |
| DISALLOW_COPY_AND_ASSIGN(OatClass); |
| }; |
| |
| class OatWriter::OatDexFile { |
| public: |
| OatDexFile(const char* dex_file_location, |
| DexFileSource source, |
| CreateTypeLookupTable create_type_lookup_table); |
| OatDexFile(OatDexFile&& src) = default; |
| |
| const char* GetLocation() const { |
| return dex_file_location_data_; |
| } |
| |
| size_t SizeOf() const; |
| bool Write(OatWriter* oat_writer, OutputStream* out) const; |
| bool WriteClassOffsets(OatWriter* oat_writer, OutputStream* out); |
| |
| size_t GetClassOffsetsRawSize() const { |
| return class_offsets_.size() * sizeof(class_offsets_[0]); |
| } |
| |
| // The source of the dex file. |
| DexFileSource source_; |
| |
| // Whether to create the type lookup table. |
| CreateTypeLookupTable create_type_lookup_table_; |
| |
| // Dex file size. Initialized when writing the dex file. |
| size_t dex_file_size_; |
| |
| // Offset of start of OatDexFile from beginning of OatHeader. It is |
| // used to validate file position when writing. |
| size_t offset_; |
| |
| // Data to write. |
| uint32_t dex_file_location_size_; |
| const char* dex_file_location_data_; |
| uint32_t dex_file_location_checksum_; |
| uint32_t dex_file_offset_; |
| uint32_t class_offsets_offset_; |
| uint32_t lookup_table_offset_; |
| uint32_t method_bss_mapping_offset_; |
| uint32_t dex_sections_layout_offset_; |
| |
| // Data to write to a separate section. |
| dchecked_vector<uint32_t> class_offsets_; |
| |
| // Dex section layout info to serialize. |
| DexLayoutSections dex_sections_layout_; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(OatDexFile); |
| }; |
| |
| #define DCHECK_OFFSET() \ |
| DCHECK_EQ(static_cast<off_t>(file_offset + relative_offset), out->Seek(0, kSeekCurrent)) \ |
| << "file_offset=" << file_offset << " relative_offset=" << relative_offset |
| |
| #define DCHECK_OFFSET_() \ |
| DCHECK_EQ(static_cast<off_t>(file_offset + offset_), out->Seek(0, kSeekCurrent)) \ |
| << "file_offset=" << file_offset << " offset_=" << offset_ |
| |
| OatWriter::OatWriter(bool compiling_boot_image, |
| TimingLogger* timings, |
| ProfileCompilationInfo* info, |
| CompactDexLevel compact_dex_level) |
| : write_state_(WriteState::kAddingDexFileSources), |
| timings_(timings), |
| raw_dex_files_(), |
| zip_archives_(), |
| zipped_dex_files_(), |
| zipped_dex_file_locations_(), |
| compiler_driver_(nullptr), |
| image_writer_(nullptr), |
| compiling_boot_image_(compiling_boot_image), |
| dex_files_(nullptr), |
| vdex_size_(0u), |
| vdex_dex_files_offset_(0u), |
| vdex_verifier_deps_offset_(0u), |
| vdex_quickening_info_offset_(0u), |
| oat_size_(0u), |
| bss_start_(0u), |
| bss_size_(0u), |
| bss_methods_offset_(0u), |
| bss_roots_offset_(0u), |
| bss_method_entry_references_(), |
| bss_method_entries_(), |
| bss_type_entries_(), |
| bss_string_entries_(), |
| map_boot_image_tables_to_bss_(false), |
| oat_data_offset_(0u), |
| oat_header_(nullptr), |
| size_vdex_header_(0), |
| size_vdex_checksums_(0), |
| size_dex_file_alignment_(0), |
| size_executable_offset_alignment_(0), |
| size_oat_header_(0), |
| size_oat_header_key_value_store_(0), |
| size_dex_file_(0), |
| size_verifier_deps_(0), |
| size_verifier_deps_alignment_(0), |
| size_quickening_info_(0), |
| size_quickening_info_alignment_(0), |
| size_interpreter_to_interpreter_bridge_(0), |
| size_interpreter_to_compiled_code_bridge_(0), |
| size_jni_dlsym_lookup_(0), |
| size_quick_generic_jni_trampoline_(0), |
| size_quick_imt_conflict_trampoline_(0), |
| size_quick_resolution_trampoline_(0), |
| size_quick_to_interpreter_bridge_(0), |
| size_trampoline_alignment_(0), |
| size_method_header_(0), |
| size_code_(0), |
| size_code_alignment_(0), |
| size_relative_call_thunks_(0), |
| size_misc_thunks_(0), |
| size_vmap_table_(0), |
| size_method_info_(0), |
| size_oat_dex_file_location_size_(0), |
| size_oat_dex_file_location_data_(0), |
| size_oat_dex_file_location_checksum_(0), |
| size_oat_dex_file_offset_(0), |
| size_oat_dex_file_class_offsets_offset_(0), |
| size_oat_dex_file_lookup_table_offset_(0), |
| size_oat_dex_file_dex_layout_sections_offset_(0), |
| size_oat_dex_file_dex_layout_sections_(0), |
| size_oat_dex_file_dex_layout_sections_alignment_(0), |
| size_oat_dex_file_method_bss_mapping_offset_(0), |
| size_oat_lookup_table_alignment_(0), |
| size_oat_lookup_table_(0), |
| size_oat_class_offsets_alignment_(0), |
| size_oat_class_offsets_(0), |
| size_oat_class_type_(0), |
| size_oat_class_status_(0), |
| size_oat_class_method_bitmaps_(0), |
| size_oat_class_method_offsets_(0), |
| size_method_bss_mappings_(0u), |
| relative_patcher_(nullptr), |
| absolute_patch_locations_(), |
| profile_compilation_info_(info), |
| compact_dex_level_(compact_dex_level) { |
| } |
| |
| bool OatWriter::AddDexFileSource(const char* filename, |
| const char* location, |
| CreateTypeLookupTable create_type_lookup_table) { |
| DCHECK(write_state_ == WriteState::kAddingDexFileSources); |
| uint32_t magic; |
| std::string error_msg; |
| File fd = OpenAndReadMagic(filename, &magic, &error_msg); |
| if (fd.Fd() == -1) { |
| PLOG(ERROR) << "Failed to read magic number from dex file: '" << filename << "'"; |
| return false; |
| } else if (DexFileLoader::IsMagicValid(magic)) { |
| // The file is open for reading, not writing, so it's OK to let the File destructor |
| // close it without checking for explicit Close(), so pass checkUsage = false. |
| raw_dex_files_.emplace_back(new File(fd.Release(), location, /* checkUsage */ false)); |
| oat_dex_files_.emplace_back(location, |
| DexFileSource(raw_dex_files_.back().get()), |
| create_type_lookup_table); |
| } else if (IsZipMagic(magic)) { |
| if (!AddZippedDexFilesSource(std::move(fd), location, create_type_lookup_table)) { |
| return false; |
| } |
| } else { |
| LOG(ERROR) << "Expected valid zip or dex file: '" << filename << "'"; |
| return false; |
| } |
| return true; |
| } |
| |
| // Add dex file source(s) from a zip file specified by a file handle. |
| bool OatWriter::AddZippedDexFilesSource(File&& zip_fd, |
| const char* location, |
| CreateTypeLookupTable create_type_lookup_table) { |
| DCHECK(write_state_ == WriteState::kAddingDexFileSources); |
| std::string error_msg; |
| zip_archives_.emplace_back(ZipArchive::OpenFromFd(zip_fd.Release(), location, &error_msg)); |
| ZipArchive* zip_archive = zip_archives_.back().get(); |
| if (zip_archive == nullptr) { |
| LOG(ERROR) << "Failed to open zip from file descriptor for '" << location << "': " |
| << error_msg; |
| return false; |
| } |
| for (size_t i = 0; ; ++i) { |
| std::string entry_name = DexFileLoader::GetMultiDexClassesDexName(i); |
| std::unique_ptr<ZipEntry> entry(zip_archive->Find(entry_name.c_str(), &error_msg)); |
| if (entry == nullptr) { |
| break; |
| } |
| zipped_dex_files_.push_back(std::move(entry)); |
| zipped_dex_file_locations_.push_back(DexFileLoader::GetMultiDexLocation(i, location)); |
| const char* full_location = zipped_dex_file_locations_.back().c_str(); |
| oat_dex_files_.emplace_back(full_location, |
| DexFileSource(zipped_dex_files_.back().get()), |
| create_type_lookup_table); |
| } |
| if (zipped_dex_file_locations_.empty()) { |
| LOG(ERROR) << "No dex files in zip file '" << location << "': " << error_msg; |
| return false; |
| } |
| return true; |
| } |
| |
| // Add dex file source(s) from a vdex file specified by a file handle. |
| bool OatWriter::AddVdexDexFilesSource(const VdexFile& vdex_file, |
| const char* location, |
| CreateTypeLookupTable create_type_lookup_table) { |
| DCHECK(write_state_ == WriteState::kAddingDexFileSources); |
| const uint8_t* current_dex_data = nullptr; |
| for (size_t i = 0; i < vdex_file.GetHeader().GetNumberOfDexFiles(); ++i) { |
| current_dex_data = vdex_file.GetNextDexFileData(current_dex_data); |
| if (current_dex_data == nullptr) { |
| LOG(ERROR) << "Unexpected number of dex files in vdex " << location; |
| return false; |
| } |
| |
| if (!DexFileLoader::IsMagicValid(current_dex_data)) { |
| LOG(ERROR) << "Invalid magic in vdex file created from " << location; |
| return false; |
| } |
| // We used `zipped_dex_file_locations_` to keep the strings in memory. |
| zipped_dex_file_locations_.push_back(DexFileLoader::GetMultiDexLocation(i, location)); |
| const char* full_location = zipped_dex_file_locations_.back().c_str(); |
| oat_dex_files_.emplace_back(full_location, |
| DexFileSource(current_dex_data), |
| create_type_lookup_table); |
| oat_dex_files_.back().dex_file_location_checksum_ = vdex_file.GetLocationChecksum(i); |
| } |
| |
| if (vdex_file.GetNextDexFileData(current_dex_data) != nullptr) { |
| LOG(ERROR) << "Unexpected number of dex files in vdex " << location; |
| return false; |
| } |
| |
| if (oat_dex_files_.empty()) { |
| LOG(ERROR) << "No dex files in vdex file created from " << location; |
| return false; |
| } |
| return true; |
| } |
| |
| // Add dex file source from raw memory. |
| bool OatWriter::AddRawDexFileSource(const ArrayRef<const uint8_t>& data, |
| const char* location, |
| uint32_t location_checksum, |
| CreateTypeLookupTable create_type_lookup_table) { |
| DCHECK(write_state_ == WriteState::kAddingDexFileSources); |
| if (data.size() < sizeof(DexFile::Header)) { |
| LOG(ERROR) << "Provided data is shorter than dex file header. size: " |
| << data.size() << " File: " << location; |
| return false; |
| } |
| if (!ValidateDexFileHeader(data.data(), location)) { |
| return false; |
| } |
| const UnalignedDexFileHeader* header = AsUnalignedDexFileHeader(data.data()); |
| if (data.size() < header->file_size_) { |
| LOG(ERROR) << "Truncated dex file data. Data size: " << data.size() |
| << " file size from header: " << header->file_size_ << " File: " << location; |
| return false; |
| } |
| |
| oat_dex_files_.emplace_back(location, DexFileSource(data.data()), create_type_lookup_table); |
| oat_dex_files_.back().dex_file_location_checksum_ = location_checksum; |
| return true; |
| } |
| |
| dchecked_vector<std::string> OatWriter::GetSourceLocations() const { |
| dchecked_vector<std::string> locations; |
| locations.reserve(oat_dex_files_.size()); |
| for (const OatDexFile& oat_dex_file : oat_dex_files_) { |
| locations.push_back(oat_dex_file.GetLocation()); |
| } |
| return locations; |
| } |
| |
| bool OatWriter::MayHaveCompiledMethods() const { |
| return CompilerFilter::IsAnyCompilationEnabled( |
| GetCompilerDriver()->GetCompilerOptions().GetCompilerFilter()); |
| } |
| |
| bool OatWriter::WriteAndOpenDexFiles( |
| File* vdex_file, |
| OutputStream* oat_rodata, |
| InstructionSet instruction_set, |
| const InstructionSetFeatures* instruction_set_features, |
| SafeMap<std::string, std::string>* key_value_store, |
| bool verify, |
| bool update_input_vdex, |
| /*out*/ std::unique_ptr<MemMap>* opened_dex_files_map, |
| /*out*/ std::vector<std::unique_ptr<const DexFile>>* opened_dex_files) { |
| CHECK(write_state_ == WriteState::kAddingDexFileSources); |
| |
| // Record the ELF rodata section offset, i.e. the beginning of the OAT data. |
| if (!RecordOatDataOffset(oat_rodata)) { |
| return false; |
| } |
| |
| std::unique_ptr<MemMap> dex_files_map; |
| std::vector<std::unique_ptr<const DexFile>> dex_files; |
| |
| // Initialize VDEX and OAT headers. |
| if (kIsVdexEnabled) { |
| // Reserve space for Vdex header and checksums. |
| vdex_size_ = sizeof(VdexFile::Header) + oat_dex_files_.size() * sizeof(VdexFile::VdexChecksum); |
| } |
| oat_size_ = InitOatHeader(instruction_set, |
| instruction_set_features, |
| dchecked_integral_cast<uint32_t>(oat_dex_files_.size()), |
| key_value_store); |
| |
| ChecksumUpdatingOutputStream checksum_updating_rodata(oat_rodata, oat_header_.get()); |
| |
| if (kIsVdexEnabled) { |
| std::unique_ptr<BufferedOutputStream> vdex_out = |
| std::make_unique<BufferedOutputStream>(std::make_unique<FileOutputStream>(vdex_file)); |
| // Write DEX files into VDEX, mmap and open them. |
| if (!WriteDexFiles(vdex_out.get(), vdex_file, update_input_vdex) || |
| !OpenDexFiles(vdex_file, verify, &dex_files_map, &dex_files)) { |
| return false; |
| } |
| } else { |
| DCHECK(!update_input_vdex); |
| // Write DEX files into OAT, mmap and open them. |
| if (!WriteDexFiles(oat_rodata, vdex_file, update_input_vdex) || |
| !OpenDexFiles(vdex_file, verify, &dex_files_map, &dex_files)) { |
| return false; |
| } |
| |
| // Do a bulk checksum update for Dex[]. Doing it piece by piece would be |
| // difficult because we're not using the OutputStream directly. |
| if (!oat_dex_files_.empty()) { |
| size_t size = oat_size_ - oat_dex_files_[0].dex_file_offset_; |
| oat_header_->UpdateChecksum(dex_files_map->Begin(), size); |
| } |
| } |
| |
| // Write type lookup tables into the oat file. |
| if (!WriteTypeLookupTables(&checksum_updating_rodata, dex_files)) { |
| return false; |
| } |
| |
| // Write dex layout sections into the oat file. |
| if (!WriteDexLayoutSections(&checksum_updating_rodata, dex_files)) { |
| return false; |
| } |
| |
| *opened_dex_files_map = std::move(dex_files_map); |
| *opened_dex_files = std::move(dex_files); |
| write_state_ = WriteState::kPrepareLayout; |
| return true; |
| } |
| |
| void OatWriter::PrepareLayout(MultiOatRelativePatcher* relative_patcher) { |
| CHECK(write_state_ == WriteState::kPrepareLayout); |
| |
| relative_patcher_ = relative_patcher; |
| SetMultiOatRelativePatcherAdjustment(); |
| |
| if (compiling_boot_image_) { |
| CHECK(image_writer_ != nullptr); |
| } |
| InstructionSet instruction_set = compiler_driver_->GetInstructionSet(); |
| CHECK_EQ(instruction_set, oat_header_->GetInstructionSet()); |
| |
| { |
| TimingLogger::ScopedTiming split("InitBssLayout", timings_); |
| InitBssLayout(instruction_set); |
| } |
| |
| uint32_t offset = oat_size_; |
| { |
| TimingLogger::ScopedTiming split("InitClassOffsets", timings_); |
| offset = InitClassOffsets(offset); |
| } |
| { |
| TimingLogger::ScopedTiming split("InitOatClasses", timings_); |
| offset = InitOatClasses(offset); |
| } |
| { |
| TimingLogger::ScopedTiming split("InitMethodBssMappings", timings_); |
| offset = InitMethodBssMappings(offset); |
| } |
| { |
| TimingLogger::ScopedTiming split("InitOatMaps", timings_); |
| offset = InitOatMaps(offset); |
| } |
| { |
| TimingLogger::ScopedTiming split("InitOatDexFiles", timings_); |
| oat_header_->SetOatDexFilesOffset(offset); |
| offset = InitOatDexFiles(offset); |
| } |
| { |
| TimingLogger::ScopedTiming split("InitOatCode", timings_); |
| offset = InitOatCode(offset); |
| } |
| { |
| TimingLogger::ScopedTiming split("InitOatCodeDexFiles", timings_); |
| offset = InitOatCodeDexFiles(offset); |
| } |
| oat_size_ = offset; |
| bss_start_ = (bss_size_ != 0u) ? RoundUp(oat_size_, kPageSize) : 0u; |
| |
| CHECK_EQ(dex_files_->size(), oat_dex_files_.size()); |
| if (compiling_boot_image_) { |
| CHECK_EQ(image_writer_ != nullptr, |
| oat_header_->GetStoreValueByKey(OatHeader::kImageLocationKey) == nullptr); |
| } |
| |
| write_state_ = WriteState::kWriteRoData; |
| } |
| |
| OatWriter::~OatWriter() { |
| } |
| |
| class OatWriter::DexMethodVisitor { |
| public: |
| DexMethodVisitor(OatWriter* writer, size_t offset) |
| : writer_(writer), |
| offset_(offset), |
| dex_file_(nullptr), |
| class_def_index_(dex::kDexNoIndex) {} |
| |
| virtual bool StartClass(const DexFile* dex_file, size_t class_def_index) { |
| DCHECK(dex_file_ == nullptr); |
| DCHECK_EQ(class_def_index_, dex::kDexNoIndex); |
| dex_file_ = dex_file; |
| class_def_index_ = class_def_index; |
| return true; |
| } |
| |
| virtual bool VisitMethod(size_t class_def_method_index, const ClassDataItemIterator& it) = 0; |
| |
| virtual bool EndClass() { |
| if (kIsDebugBuild) { |
| dex_file_ = nullptr; |
| class_def_index_ = dex::kDexNoIndex; |
| } |
| return true; |
| } |
| |
| size_t GetOffset() const { |
| return offset_; |
| } |
| |
| protected: |
| virtual ~DexMethodVisitor() { } |
| |
| OatWriter* const writer_; |
| |
| // The offset is usually advanced for each visited method by the derived class. |
| size_t offset_; |
| |
| // The dex file and class def index are set in StartClass(). |
| const DexFile* dex_file_; |
| size_t class_def_index_; |
| }; |
| |
| class OatWriter::OatDexMethodVisitor : public DexMethodVisitor { |
| public: |
| OatDexMethodVisitor(OatWriter* writer, size_t offset) |
| : DexMethodVisitor(writer, offset), |
| oat_class_index_(0u), |
| method_offsets_index_(0u) {} |
| |
| bool StartClass(const DexFile* dex_file, size_t class_def_index) OVERRIDE { |
| DexMethodVisitor::StartClass(dex_file, class_def_index); |
| if (kIsDebugBuild && writer_->MayHaveCompiledMethods()) { |
| // There are no oat classes if there aren't any compiled methods. |
| CHECK_LT(oat_class_index_, writer_->oat_classes_.size()); |
| } |
| method_offsets_index_ = 0u; |
| return true; |
| } |
| |
| bool EndClass() OVERRIDE { |
| ++oat_class_index_; |
| return DexMethodVisitor::EndClass(); |
| } |
| |
| protected: |
| size_t oat_class_index_; |
| size_t method_offsets_index_; |
| }; |
| |
| static bool HasCompiledCode(const CompiledMethod* method) { |
| // The dextodexcompiler puts the quickening info table into the CompiledMethod |
| // for simplicity. For such methods, we will emit an OatQuickMethodHeader |
| // only when vdex is disabled. |
| return method != nullptr && (!method->GetQuickCode().empty() || !kIsVdexEnabled); |
| } |
| |
| static bool HasQuickeningInfo(const CompiledMethod* method) { |
| return method != nullptr && method->GetQuickCode().empty() && !method->GetVmapTable().empty(); |
| } |
| |
| class OatWriter::InitBssLayoutMethodVisitor : public DexMethodVisitor { |
| public: |
| explicit InitBssLayoutMethodVisitor(OatWriter* writer) |
| : DexMethodVisitor(writer, /* offset */ 0u) {} |
| |
| bool VisitMethod(size_t class_def_method_index ATTRIBUTE_UNUSED, |
| const ClassDataItemIterator& it) OVERRIDE { |
| // Look for patches with .bss references and prepare maps with placeholders for their offsets. |
| CompiledMethod* compiled_method = writer_->compiler_driver_->GetCompiledMethod( |
| MethodReference(dex_file_, it.GetMemberIndex())); |
| if (HasCompiledCode(compiled_method)) { |
| for (const LinkerPatch& patch : compiled_method->GetPatches()) { |
| if (patch.GetType() == LinkerPatch::Type::kMethodBssEntry) { |
| MethodReference target_method = patch.TargetMethod(); |
| auto refs_it = writer_->bss_method_entry_references_.find(target_method.dex_file); |
| if (refs_it == writer_->bss_method_entry_references_.end()) { |
| refs_it = writer_->bss_method_entry_references_.Put( |
| target_method.dex_file, |
| BitVector(target_method.dex_file->NumMethodIds(), |
| /* expandable */ false, |
| Allocator::GetMallocAllocator())); |
| refs_it->second.ClearAllBits(); |
| } |
| refs_it->second.SetBit(target_method.index); |
| writer_->bss_method_entries_.Overwrite(target_method, /* placeholder */ 0u); |
| } else if (patch.GetType() == LinkerPatch::Type::kTypeBssEntry) { |
| TypeReference ref(patch.TargetTypeDexFile(), patch.TargetTypeIndex()); |
| writer_->bss_type_entries_.Overwrite(ref, /* placeholder */ 0u); |
| } else if (patch.GetType() == LinkerPatch::Type::kStringBssEntry) { |
| StringReference ref(patch.TargetStringDexFile(), patch.TargetStringIndex()); |
| writer_->bss_string_entries_.Overwrite(ref, /* placeholder */ 0u); |
| } else if (patch.GetType() == LinkerPatch::Type::kStringInternTable || |
| patch.GetType() == LinkerPatch::Type::kTypeClassTable) { |
| writer_->map_boot_image_tables_to_bss_ = true; |
| } |
| } |
| } else { |
| DCHECK(compiled_method == nullptr || compiled_method->GetPatches().empty()); |
| } |
| return true; |
| } |
| }; |
| |
| class OatWriter::InitOatClassesMethodVisitor : public DexMethodVisitor { |
| public: |
| InitOatClassesMethodVisitor(OatWriter* writer, size_t offset) |
| : DexMethodVisitor(writer, offset), |
| compiled_methods_(), |
| compiled_methods_with_code_(0u) { |
| size_t num_classes = 0u; |
| for (const OatDexFile& oat_dex_file : writer_->oat_dex_files_) { |
| num_classes += oat_dex_file.class_offsets_.size(); |
| } |
| // If we aren't compiling only reserve headers. |
| writer_->oat_class_headers_.reserve(num_classes); |
| if (writer->MayHaveCompiledMethods()) { |
| writer->oat_classes_.reserve(num_classes); |
| } |
| compiled_methods_.reserve(256u); |
| // If there are any classes, the class offsets allocation aligns the offset. |
| DCHECK(num_classes == 0u || IsAligned<4u>(offset)); |
| } |
| |
| bool StartClass(const DexFile* dex_file, size_t class_def_index) OVERRIDE { |
| DexMethodVisitor::StartClass(dex_file, class_def_index); |
| compiled_methods_.clear(); |
| compiled_methods_with_code_ = 0u; |
| return true; |
| } |
| |
| bool VisitMethod(size_t class_def_method_index ATTRIBUTE_UNUSED, |
| const ClassDataItemIterator& it) OVERRIDE { |
| // Fill in the compiled_methods_ array for methods that have a |
| // CompiledMethod. We track the number of non-null entries in |
| // compiled_methods_with_code_ since we only want to allocate |
| // OatMethodOffsets for the compiled methods. |
| uint32_t method_idx = it.GetMemberIndex(); |
| CompiledMethod* compiled_method = |
| writer_->compiler_driver_->GetCompiledMethod(MethodReference(dex_file_, method_idx)); |
| compiled_methods_.push_back(compiled_method); |
| if (HasCompiledCode(compiled_method)) { |
| ++compiled_methods_with_code_; |
| } |
| return true; |
| } |
| |
| bool EndClass() OVERRIDE { |
| ClassReference class_ref(dex_file_, class_def_index_); |
| mirror::Class::Status status; |
| bool found = writer_->compiler_driver_->GetCompiledClass(class_ref, &status); |
| if (!found) { |
| VerificationResults* results = writer_->compiler_driver_->GetVerificationResults(); |
| if (results != nullptr && results->IsClassRejected(class_ref)) { |
| // The oat class status is used only for verification of resolved classes, |
| // so use kStatusErrorResolved whether the class was resolved or unresolved |
| // during compile-time verification. |
| status = mirror::Class::kStatusErrorResolved; |
| } else { |
| status = mirror::Class::kStatusNotReady; |
| } |
| } |
| |
| writer_->oat_class_headers_.emplace_back(offset_, |
| compiled_methods_with_code_, |
| compiled_methods_.size(), |
| status); |
| OatClassHeader& header = writer_->oat_class_headers_.back(); |
| offset_ += header.SizeOf(); |
| if (writer_->MayHaveCompiledMethods()) { |
| writer_->oat_classes_.emplace_back(compiled_methods_, |
| compiled_methods_with_code_, |
| header.type_); |
| offset_ += writer_->oat_classes_.back().SizeOf(); |
| } |
| return DexMethodVisitor::EndClass(); |
| } |
| |
| private: |
| dchecked_vector<CompiledMethod*> compiled_methods_; |
| size_t compiled_methods_with_code_; |
| }; |
| |
| // CompiledMethod + metadata required to do ordered method layout. |
| // |
| // See also OrderedMethodVisitor. |
| struct OatWriter::OrderedMethodData { |
| ProfileCompilationInfo::MethodHotness method_hotness; |
| OatClass* oat_class; |
| CompiledMethod* compiled_method; |
| MethodReference method_reference; |
| size_t method_offsets_index; |
| |
| size_t class_def_index; |
| uint32_t access_flags; |
| const DexFile::CodeItem* code_item; |
| |
| // A value of -1 denotes missing debug info |
| static constexpr size_t kDebugInfoIdxInvalid = static_cast<size_t>(-1); |
| // Index into writer_->method_info_ |
| size_t debug_info_idx; |
| |
| bool HasDebugInfo() const { |
| return debug_info_idx != kDebugInfoIdxInvalid; |
| } |
| |
| // Bin each method according to the profile flags. |
| // |
| // Groups by e.g. |
| // -- not hot at all |
| // -- hot |
| // -- hot and startup |
| // -- hot and post-startup |
| // -- hot and startup and poststartup |
| // -- startup |
| // -- startup and post-startup |
| // -- post-startup |
| // |
| // (See MethodHotness enum definition for up-to-date binning order.) |
| bool operator<(const OrderedMethodData& other) const { |
| if (kOatWriterForceOatCodeLayout) { |
| // Development flag: Override default behavior by sorting by name. |
| |
| std::string name = method_reference.PrettyMethod(); |
| std::string other_name = other.method_reference.PrettyMethod(); |
| return name < other_name; |
| } |
| |
| // Use the profile's method hotness to determine sort order. |
| if (GetMethodHotnessOrder() < other.GetMethodHotnessOrder()) { |
| return true; |
| } |
| |
| // Default: retain the original order. |
| return false; |
| } |
| |
| private: |
| // Used to determine relative order for OAT code layout when determining |
| // binning. |
| size_t GetMethodHotnessOrder() const { |
| bool hotness[] = { |
| method_hotness.IsHot(), |
| method_hotness.IsStartup(), |
| method_hotness.IsPostStartup() |
| }; |
| |
| |
| // Note: Bin-to-bin order does not matter. If the kernel does or does not read-ahead |
| // any memory, it only goes into the buffer cache and does not grow the PSS until the first |
| // time that memory is referenced in the process. |
| |
| size_t hotness_bits = 0; |
| for (size_t i = 0; i < arraysize(hotness); ++i) { |
| if (hotness[i]) { |
| hotness_bits |= (1 << i); |
| } |
| } |
| |
| if (kIsDebugBuild) { |
| // Check for bins that are always-empty given a real profile. |
| if (method_hotness.IsHot() && |
| !method_hotness.IsStartup() && !method_hotness.IsPostStartup()) { |
| std::string name = method_reference.PrettyMethod(); |
| LOG(FATAL) << "Method " << name << " had a Hot method that wasn't marked " |
| << "either start-up or post-startup. Possible corrupted profile?"; |
| // This is not fatal, so only warn. |
| } |
| } |
| |
| return hotness_bits; |
| } |
| }; |
| |
| // Given a queue of CompiledMethod in some total order, |
| // visit each one in that order. |
| class OatWriter::OrderedMethodVisitor { |
| public: |
| explicit OrderedMethodVisitor(OrderedMethodList ordered_methods) |
| : ordered_methods_(std::move(ordered_methods)) { |
| } |
| |
| virtual ~OrderedMethodVisitor() {} |
| |
| // Invoke VisitMethod in the order of `ordered_methods`, then invoke VisitComplete. |
| bool Visit() REQUIRES_SHARED(Locks::mutator_lock_) { |
| if (!VisitStart()) { |
| return false; |
| } |
| |
| for (const OrderedMethodData& method_data : ordered_methods_) { |
| if (!VisitMethod(method_data)) { |
| return false; |
| } |
| } |
| |
| return VisitComplete(); |
| } |
| |
| // Invoked once at the beginning, prior to visiting anything else. |
| // |
| // Return false to abort further visiting. |
| virtual bool VisitStart() { return true; } |
| |
| // Invoked repeatedly in the order specified by `ordered_methods`. |
| // |
| // Return false to short-circuit and to stop visiting further methods. |
| virtual bool VisitMethod(const OrderedMethodData& method_data) |
| REQUIRES_SHARED(Locks::mutator_lock_) = 0; |
| |
| // Invoked once at the end, after every other method has been successfully visited. |
| // |
| // Return false to indicate the overall `Visit` has failed. |
| virtual bool VisitComplete() = 0; |
| |
| OrderedMethodList ReleaseOrderedMethods() { |
| return std::move(ordered_methods_); |
| } |
| |
| private: |
| // List of compiled methods, sorted by the order defined in OrderedMethodData. |
| // Methods can be inserted more than once in case of duplicated methods. |
| OrderedMethodList ordered_methods_; |
| }; |
| |
| // Visit every compiled method in order to determine its order within the OAT file. |
| // Methods from the same class do not need to be adjacent in the OAT code. |
| class OatWriter::LayoutCodeMethodVisitor : public OatDexMethodVisitor { |
| public: |
| LayoutCodeMethodVisitor(OatWriter* writer, size_t offset) |
| : OatDexMethodVisitor(writer, offset) { |
| } |
| |
| bool EndClass() OVERRIDE { |
| OatDexMethodVisitor::EndClass(); |
| return true; |
| } |
| |
| bool VisitMethod(size_t class_def_method_index, |
| const ClassDataItemIterator& it) |
| OVERRIDE |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| Locks::mutator_lock_->AssertSharedHeld(Thread::Current()); |
| |
| OatClass* oat_class = &writer_->oat_classes_[oat_class_index_]; |
| CompiledMethod* compiled_method = oat_class->GetCompiledMethod(class_def_method_index); |
| |
| if (HasCompiledCode(compiled_method)) { |
| size_t debug_info_idx = OrderedMethodData::kDebugInfoIdxInvalid; |
| |
| { |
| const CompilerOptions& compiler_options = writer_->compiler_driver_->GetCompilerOptions(); |
| ArrayRef<const uint8_t> quick_code = compiled_method->GetQuickCode(); |
| uint32_t code_size = quick_code.size() * sizeof(uint8_t); |
| |
| // Debug method info must be pushed in the original order |
| // (i.e. all methods from the same class must be adjacent in the debug info sections) |
| // ElfCompilationUnitWriter::Write requires this. |
| if (compiler_options.GenerateAnyDebugInfo() && code_size != 0) { |
| debug::MethodDebugInfo info = debug::MethodDebugInfo(); |
| writer_->method_info_.push_back(info); |
| |
| // The debug info is filled in LayoutReserveOffsetCodeMethodVisitor |
| // once we know the offsets. |
| // |
| // Store the index into writer_->method_info_ since future push-backs |
| // could reallocate and change the underlying data address. |
| debug_info_idx = writer_->method_info_.size() - 1; |
| } |
| } |
| |
| MethodReference method_ref(dex_file_, it.GetMemberIndex()); |
| |
| // Lookup method hotness from profile, if available. |
| // Otherwise assume a default of none-hotness. |
| ProfileCompilationInfo::MethodHotness method_hotness = |
| writer_->profile_compilation_info_ != nullptr |
| ? writer_->profile_compilation_info_->GetMethodHotness(method_ref) |
| : ProfileCompilationInfo::MethodHotness(); |
| |
| // Handle duplicate methods by pushing them repeatedly. |
| OrderedMethodData method_data = { |
| method_hotness, |
| oat_class, |
| compiled_method, |
| method_ref, |
| method_offsets_index_, |
| class_def_index_, |
| it.GetMethodAccessFlags(), |
| it.GetMethodCodeItem(), |
| debug_info_idx |
| }; |
| ordered_methods_.push_back(method_data); |
| |
| method_offsets_index_++; |
| } |
| |
| return true; |
| } |
| |
| OrderedMethodList ReleaseOrderedMethods() { |
| if (kOatWriterForceOatCodeLayout || writer_->profile_compilation_info_ != nullptr) { |
| // Sort by the method ordering criteria (in OrderedMethodData). |
| // Since most methods will have the same ordering criteria, |
| // we preserve the original insertion order within the same sort order. |
| std::stable_sort(ordered_methods_.begin(), ordered_methods_.end()); |
| } else { |
| // The profile-less behavior is as if every method had 0 hotness |
| // associated with it. |
| // |
| // Since sorting all methods with hotness=0 should give back the same |
| // order as before, don't do anything. |
| DCHECK(std::is_sorted(ordered_methods_.begin(), ordered_methods_.end())); |
| } |
| |
| return std::move(ordered_methods_); |
| } |
| |
| private: |
| // List of compiled methods, later to be sorted by order defined in OrderedMethodData. |
| // Methods can be inserted more than once in case of duplicated methods. |
| OrderedMethodList ordered_methods_; |
| }; |
| |
| // Given a method order, reserve the offsets for each CompiledMethod in the OAT file. |
| class OatWriter::LayoutReserveOffsetCodeMethodVisitor : public OrderedMethodVisitor { |
| public: |
| LayoutReserveOffsetCodeMethodVisitor(OatWriter* writer, |
| size_t offset, |
| OrderedMethodList ordered_methods) |
| : LayoutReserveOffsetCodeMethodVisitor(writer, |
| offset, |
| writer->GetCompilerDriver()->GetCompilerOptions(), |
| std::move(ordered_methods)) { |
| } |
| |
| virtual bool VisitComplete() OVERRIDE { |
| offset_ = writer_->relative_patcher_->ReserveSpaceEnd(offset_); |
| if (generate_debug_info_) { |
| std::vector<debug::MethodDebugInfo> thunk_infos = |
| relative_patcher_->GenerateThunkDebugInfo(executable_offset_); |
| writer_->method_info_.insert(writer_->method_info_.end(), |
| std::make_move_iterator(thunk_infos.begin()), |
| std::make_move_iterator(thunk_infos.end())); |
| } |
| return true; |
| } |
| |
| virtual bool VisitMethod(const OrderedMethodData& method_data) |
| OVERRIDE |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| OatClass* oat_class = method_data.oat_class; |
| CompiledMethod* compiled_method = method_data.compiled_method; |
| const MethodReference& method_ref = method_data.method_reference; |
| uint16_t method_offsets_index_ = method_data.method_offsets_index; |
| size_t class_def_index = method_data.class_def_index; |
| uint32_t access_flags = method_data.access_flags; |
| const DexFile::CodeItem* code_item = method_data.code_item; |
| bool has_debug_info = method_data.HasDebugInfo(); |
| size_t debug_info_idx = method_data.debug_info_idx; |
| |
| DCHECK(HasCompiledCode(compiled_method)) << method_ref.PrettyMethod(); |
| |
| // Derived from CompiledMethod. |
| uint32_t quick_code_offset = 0; |
| |
| ArrayRef<const uint8_t> quick_code = compiled_method->GetQuickCode(); |
| uint32_t code_size = quick_code.size() * sizeof(uint8_t); |
| uint32_t thumb_offset = compiled_method->CodeDelta(); |
| |
| // Deduplicate code arrays if we are not producing debuggable code. |
| bool deduped = true; |
| if (debuggable_) { |
| quick_code_offset = relative_patcher_->GetOffset(method_ref); |
| if (quick_code_offset != 0u) { |
| // Duplicate methods, we want the same code for both of them so that the oat writer puts |
| // the same code in both ArtMethods so that we do not get different oat code at runtime. |
| } else { |
| quick_code_offset = NewQuickCodeOffset(compiled_method, method_ref, thumb_offset); |
| deduped = false; |
| } |
| |
| if (code_size != 0) { |
| if (relative_patcher_->GetOffset(method_ref) != 0u) { |
| // TODO: Should this be a hard failure? |
| LOG(WARNING) << "Multiple definitions of " |
| << method_ref.dex_file->PrettyMethod(method_ref.index) |
| << " offsets " << relative_patcher_->GetOffset(method_ref) |
| << " " << quick_code_offset; |
| } else { |
| relative_patcher_->SetOffset(method_ref, quick_code_offset); |
| } |
| } |
| } else { |
| quick_code_offset = dedupe_map_.GetOrCreate( |
| compiled_method, |
| [this, &deduped, compiled_method, &method_ref, thumb_offset]() { |
| deduped = false; |
| return NewQuickCodeOffset(compiled_method, method_ref, thumb_offset); |
| }); |
| } |
| |
| if (code_size != 0) { |
| if (relative_patcher_->GetOffset(method_ref) != 0u) { |
| // TODO: Should this be a hard failure? |
| LOG(WARNING) << "Multiple definitions of " |
| << method_ref.dex_file->PrettyMethod(method_ref.index) |
| << " offsets " << relative_patcher_->GetOffset(method_ref) |
| << " " << quick_code_offset; |
| } else { |
| relative_patcher_->SetOffset(method_ref, quick_code_offset); |
| } |
| } |
| |
| // Update quick method header. |
| DCHECK_LT(method_offsets_index_, oat_class->method_headers_.size()); |
| OatQuickMethodHeader* method_header = &oat_class->method_headers_[method_offsets_index_]; |
| uint32_t vmap_table_offset = method_header->GetVmapTableOffset(); |
| uint32_t method_info_offset = method_header->GetMethodInfoOffset(); |
| // The code offset was 0 when the mapping/vmap table offset was set, so it's set |
| // to 0-offset and we need to adjust it by code_offset. |
| uint32_t code_offset = quick_code_offset - thumb_offset; |
| if (!compiled_method->GetQuickCode().empty()) { |
| // If the code is compiled, we write the offset of the stack map relative |
| // to the code, |
| if (vmap_table_offset != 0u) { |
| vmap_table_offset += code_offset; |
| DCHECK_LT(vmap_table_offset, code_offset); |
| } |
| if (method_info_offset != 0u) { |
| method_info_offset += code_offset; |
| DCHECK_LT(method_info_offset, code_offset); |
| } |
| } else { |
| CHECK(!kIsVdexEnabled); |
| // We write the offset of the quickening info relative to the code. |
| vmap_table_offset += code_offset; |
| DCHECK_LT(vmap_table_offset, code_offset); |
| } |
| uint32_t frame_size_in_bytes = compiled_method->GetFrameSizeInBytes(); |
| uint32_t core_spill_mask = compiled_method->GetCoreSpillMask(); |
| uint32_t fp_spill_mask = compiled_method->GetFpSpillMask(); |
| *method_header = OatQuickMethodHeader(vmap_table_offset, |
| method_info_offset, |
| frame_size_in_bytes, |
| core_spill_mask, |
| fp_spill_mask, |
| code_size); |
| |
| if (!deduped) { |
| // Update offsets. (Checksum is updated when writing.) |
| offset_ += sizeof(*method_header); // Method header is prepended before code. |
| offset_ += code_size; |
| // Record absolute patch locations. |
| if (!compiled_method->GetPatches().empty()) { |
| uintptr_t base_loc = offset_ - code_size - writer_->oat_header_->GetExecutableOffset(); |
| for (const LinkerPatch& patch : compiled_method->GetPatches()) { |
| if (!patch.IsPcRelative()) { |
| writer_->absolute_patch_locations_.push_back(base_loc + patch.LiteralOffset()); |
| } |
| } |
| } |
| } |
| |
| // Exclude quickened dex methods (code_size == 0) since they have no native code. |
| if (generate_debug_info_ && code_size != 0) { |
| DCHECK(has_debug_info); |
| |
| bool has_code_info = method_header->IsOptimized(); |
| // Record debug information for this function if we are doing that. |
| debug::MethodDebugInfo& info = writer_->method_info_[debug_info_idx]; |
| DCHECK(info.trampoline_name.empty()); |
| info.dex_file = method_ref.dex_file; |
| info.class_def_index = class_def_index; |
| info.dex_method_index = method_ref.index; |
| info.access_flags = access_flags; |
| info.code_item = code_item; |
| info.isa = compiled_method->GetInstructionSet(); |
| info.deduped = deduped; |
| info.is_native_debuggable = native_debuggable_; |
| info.is_optimized = method_header->IsOptimized(); |
| info.is_code_address_text_relative = true; |
| info.code_address = code_offset - executable_offset_; |
| info.code_size = code_size; |
| info.frame_size_in_bytes = compiled_method->GetFrameSizeInBytes(); |
| info.code_info = has_code_info ? compiled_method->GetVmapTable().data() : nullptr; |
| info.cfi = compiled_method->GetCFIInfo(); |
| } else { |
| DCHECK(!has_debug_info); |
| } |
| |
| DCHECK_LT(method_offsets_index_, oat_class->method_offsets_.size()); |
| OatMethodOffsets* offsets = &oat_class->method_offsets_[method_offsets_index_]; |
| offsets->code_offset_ = quick_code_offset; |
| |
| return true; |
| } |
| |
| size_t GetOffset() const { |
| return offset_; |
| } |
| |
| private: |
| LayoutReserveOffsetCodeMethodVisitor(OatWriter* writer, |
| size_t offset, |
| const CompilerOptions& compiler_options, |
| OrderedMethodList ordered_methods) |
| : OrderedMethodVisitor(std::move(ordered_methods)), |
| writer_(writer), |
| offset_(offset), |
| relative_patcher_(writer->relative_patcher_), |
| executable_offset_(writer->oat_header_->GetExecutableOffset()), |
| debuggable_(compiler_options.GetDebuggable()), |
| native_debuggable_(compiler_options.GetNativeDebuggable()), |
| generate_debug_info_(compiler_options.GenerateAnyDebugInfo()) { |
| writer->absolute_patch_locations_.reserve( |
| writer->GetCompilerDriver()->GetNonRelativeLinkerPatchCount()); |
| } |
| |
| struct CodeOffsetsKeyComparator { |
| bool operator()(const CompiledMethod* lhs, const CompiledMethod* rhs) const { |
| // Code is deduplicated by CompilerDriver, compare only data pointers. |
| if (lhs->GetQuickCode().data() != rhs->GetQuickCode().data()) { |
| return lhs->GetQuickCode().data() < rhs->GetQuickCode().data(); |
| } |
| // If the code is the same, all other fields are likely to be the same as well. |
| if (UNLIKELY(lhs->GetVmapTable().data() != rhs->GetVmapTable().data())) { |
| return lhs->GetVmapTable().data() < rhs->GetVmapTable().data(); |
| } |
| if (UNLIKELY(lhs->GetMethodInfo().data() != rhs->GetMethodInfo().data())) { |
| return lhs->GetMethodInfo().data() < rhs->GetMethodInfo().data(); |
| } |
| if (UNLIKELY(lhs->GetPatches().data() != rhs->GetPatches().data())) { |
| return lhs->GetPatches().data() < rhs->GetPatches().data(); |
| } |
| return false; |
| } |
| }; |
| |
| uint32_t NewQuickCodeOffset(CompiledMethod* compiled_method, |
| const MethodReference& method_ref, |
| uint32_t thumb_offset) { |
| offset_ = relative_patcher_->ReserveSpace(offset_, compiled_method, method_ref); |
| offset_ += CodeAlignmentSize(offset_, *compiled_method); |
| DCHECK_ALIGNED_PARAM(offset_ + sizeof(OatQuickMethodHeader), |
| GetInstructionSetAlignment(compiled_method->GetInstructionSet())); |
| return offset_ + sizeof(OatQuickMethodHeader) + thumb_offset; |
| } |
| |
| OatWriter* writer_; |
| |
| // Offset of the code of the compiled methods. |
| size_t offset_; |
| |
| // Deduplication is already done on a pointer basis by the compiler driver, |
| // so we can simply compare the pointers to find out if things are duplicated. |
| SafeMap<const CompiledMethod*, uint32_t, CodeOffsetsKeyComparator> dedupe_map_; |
| |
| // Cache writer_'s members and compiler options. |
| MultiOatRelativePatcher* relative_patcher_; |
| uint32_t executable_offset_; |
| const bool debuggable_; |
| const bool native_debuggable_; |
| const bool generate_debug_info_; |
| }; |
| |
| class OatWriter::InitMapMethodVisitor : public OatDexMethodVisitor { |
| public: |
| InitMapMethodVisitor(OatWriter* writer, size_t offset) |
| : OatDexMethodVisitor(writer, offset) {} |
| |
| bool VisitMethod(size_t class_def_method_index, const ClassDataItemIterator& it ATTRIBUTE_UNUSED) |
| OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) { |
| OatClass* oat_class = &writer_->oat_classes_[oat_class_index_]; |
| CompiledMethod* compiled_method = oat_class->GetCompiledMethod(class_def_method_index); |
| |
| if (HasCompiledCode(compiled_method)) { |
| DCHECK_LT(method_offsets_index_, oat_class->method_offsets_.size()); |
| DCHECK_EQ(oat_class->method_headers_[method_offsets_index_].GetVmapTableOffset(), 0u); |
| |
| ArrayRef<const uint8_t> map = compiled_method->GetVmapTable(); |
| uint32_t map_size = map.size() * sizeof(map[0]); |
| if (map_size != 0u) { |
| size_t offset = dedupe_map_.GetOrCreate( |
| map.data(), |
| [this, map_size]() { |
| uint32_t new_offset = offset_; |
| offset_ += map_size; |
| return new_offset; |
| }); |
| // Code offset is not initialized yet, so set the map offset to 0u-offset. |
| DCHECK_EQ(oat_class->method_offsets_[method_offsets_index_].code_offset_, 0u); |
| oat_class->method_headers_[method_offsets_index_].SetVmapTableOffset(0u - offset); |
| } |
| ++method_offsets_index_; |
| } |
| |
| return true; |
| } |
| |
| private: |
| // Deduplication is already done on a pointer basis by the compiler driver, |
| // so we can simply compare the pointers to find out if things are duplicated. |
| SafeMap<const uint8_t*, uint32_t> dedupe_map_; |
| }; |
| |
| class OatWriter::InitMethodInfoVisitor : public OatDexMethodVisitor { |
| public: |
| InitMethodInfoVisitor(OatWriter* writer, size_t offset) : OatDexMethodVisitor(writer, offset) {} |
| |
| bool VisitMethod(size_t class_def_method_index, const ClassDataItemIterator& it ATTRIBUTE_UNUSED) |
| OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) { |
| OatClass* oat_class = &writer_->oat_classes_[oat_class_index_]; |
| CompiledMethod* compiled_method = oat_class->GetCompiledMethod(class_def_method_index); |
| |
| if (HasCompiledCode(compiled_method)) { |
| DCHECK_LT(method_offsets_index_, oat_class->method_offsets_.size()); |
| DCHECK_EQ(oat_class->method_headers_[method_offsets_index_].GetMethodInfoOffset(), 0u); |
| ArrayRef<const uint8_t> map = compiled_method->GetMethodInfo(); |
| const uint32_t map_size = map.size() * sizeof(map[0]); |
| if (map_size != 0u) { |
| size_t offset = dedupe_map_.GetOrCreate( |
| map.data(), |
| [this, map_size]() { |
| uint32_t new_offset = offset_; |
| offset_ += map_size; |
| return new_offset; |
| }); |
| // Code offset is not initialized yet, so set the map offset to 0u-offset. |
| DCHECK_EQ(oat_class->method_offsets_[method_offsets_index_].code_offset_, 0u); |
| oat_class->method_headers_[method_offsets_index_].SetMethodInfoOffset(0u - offset); |
| } |
| ++method_offsets_index_; |
| } |
| |
| return true; |
| } |
| |
| private: |
| // Deduplication is already done on a pointer basis by the compiler driver, |
| // so we can simply compare the pointers to find out if things are duplicated. |
| SafeMap<const uint8_t*, uint32_t> dedupe_map_; |
| }; |
| |
| class OatWriter::InitImageMethodVisitor : public OatDexMethodVisitor { |
| public: |
| InitImageMethodVisitor(OatWriter* writer, |
| size_t offset, |
| const std::vector<const DexFile*>* dex_files) |
| : OatDexMethodVisitor(writer, offset), |
| pointer_size_(GetInstructionSetPointerSize(writer_->compiler_driver_->GetInstructionSet())), |
| class_loader_(writer->HasImage() ? writer->image_writer_->GetClassLoader() : nullptr), |
| dex_files_(dex_files), |
| class_linker_(Runtime::Current()->GetClassLinker()) {} |
| |
| // Handle copied methods here. Copy pointer to quick code from |
| // an origin method to a copied method only if they are |
| // in the same oat file. If the origin and the copied methods are |
| // in different oat files don't touch the copied method. |
| // References to other oat files are not supported yet. |
| bool StartClass(const DexFile* dex_file, size_t class_def_index) OVERRIDE |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| OatDexMethodVisitor::StartClass(dex_file, class_def_index); |
| // Skip classes that are not in the image. |
| if (!IsImageClass()) { |
| return true; |
| } |
| ObjPtr<mirror::DexCache> dex_cache = class_linker_->FindDexCache(Thread::Current(), *dex_file); |
| const DexFile::ClassDef& class_def = dex_file->GetClassDef(class_def_index); |
| mirror::Class* klass = dex_cache->GetResolvedType(class_def.class_idx_); |
| if (klass != nullptr) { |
| for (ArtMethod& method : klass->GetCopiedMethods(pointer_size_)) { |
| // Find origin method. Declaring class and dex_method_idx |
| // in the copied method should be the same as in the origin |
| // method. |
| mirror::Class* declaring_class = method.GetDeclaringClass(); |
| ArtMethod* origin = declaring_class->FindClassMethod( |
| declaring_class->GetDexCache(), |
| method.GetDexMethodIndex(), |
| pointer_size_); |
| CHECK(origin != nullptr); |
| CHECK(!origin->IsDirect()); |
| CHECK(origin->GetDeclaringClass() == declaring_class); |
| if (IsInOatFile(&declaring_class->GetDexFile())) { |
| const void* code_ptr = |
| origin->GetEntryPointFromQuickCompiledCodePtrSize(pointer_size_); |
| if (code_ptr == nullptr) { |
| methods_to_process_.push_back(std::make_pair(&method, origin)); |
| } else { |
| method.SetEntryPointFromQuickCompiledCodePtrSize( |
| code_ptr, pointer_size_); |
| } |
| } |
| } |
| } |
| return true; |
| } |
| |
| bool VisitMethod(size_t class_def_method_index, const ClassDataItemIterator& it) OVERRIDE |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| // Skip methods that are not in the image. |
| if (!IsImageClass()) { |
| return true; |
| } |
| |
| OatClass* oat_class = &writer_->oat_classes_[oat_class_index_]; |
| CompiledMethod* compiled_method = oat_class->GetCompiledMethod(class_def_method_index); |
| |
| OatMethodOffsets offsets(0u); |
| if (HasCompiledCode(compiled_method)) { |
| DCHECK_LT(method_offsets_index_, oat_class->method_offsets_.size()); |
| offsets = oat_class->method_offsets_[method_offsets_index_]; |
| ++method_offsets_index_; |
| } |
| |
| Thread* self = Thread::Current(); |
| ObjPtr<mirror::DexCache> dex_cache = class_linker_->FindDexCache(self, *dex_file_); |
| ArtMethod* method; |
| if (writer_->HasBootImage()) { |
| const InvokeType invoke_type = it.GetMethodInvokeType( |
| dex_file_->GetClassDef(class_def_index_)); |
| // Unchecked as we hold mutator_lock_ on entry. |
| ScopedObjectAccessUnchecked soa(self); |
| StackHandleScope<1> hs(self); |
| method = class_linker_->ResolveMethod<ClassLinker::ResolveMode::kNoChecks>( |
| *dex_file_, |
| it.GetMemberIndex(), |
| hs.NewHandle(dex_cache), |
| ScopedNullHandle<mirror::ClassLoader>(), |
| nullptr, |
| invoke_type); |
| if (method == nullptr) { |
| LOG(FATAL_WITHOUT_ABORT) << "Unexpected failure to resolve a method: " |
| << dex_file_->PrettyMethod(it.GetMemberIndex(), true); |
| self->AssertPendingException(); |
| mirror::Throwable* exc = self->GetException(); |
| std::string dump = exc->Dump(); |
| LOG(FATAL) << dump; |
| UNREACHABLE(); |
| } |
| } else { |
| // Should already have been resolved by the compiler. |
| // It may not be resolved if the class failed to verify, in this case, don't set the |
| // entrypoint. This is not fatal since we shall use a resolution method. |
| method = class_linker_->LookupResolvedMethod(it.GetMemberIndex(), dex_cache, class_loader_); |
| } |
| if (method != nullptr && |
| compiled_method != nullptr && |
| compiled_method->GetQuickCode().size() != 0) { |
| method->SetEntryPointFromQuickCompiledCodePtrSize( |
| reinterpret_cast<void*>(offsets.code_offset_), pointer_size_); |
| } |
| |
| return true; |
| } |
| |
| // Check whether current class is image class |
| bool IsImageClass() { |
| const DexFile::TypeId& type_id = |
| dex_file_->GetTypeId(dex_file_->GetClassDef(class_def_index_).class_idx_); |
| const char* class_descriptor = dex_file_->GetTypeDescriptor(type_id); |
| return writer_->GetCompilerDriver()->IsImageClass(class_descriptor); |
| } |
| |
| // Check whether specified dex file is in the compiled oat file. |
| bool IsInOatFile(const DexFile* dex_file) { |
| return ContainsElement(*dex_files_, dex_file); |
| } |
| |
| // Assign a pointer to quick code for copied methods |
| // not handled in the method StartClass |
| void Postprocess() { |
| for (std::pair<ArtMethod*, ArtMethod*>& p : methods_to_process_) { |
| ArtMethod* method = p.first; |
| ArtMethod* origin = p.second; |
| const void* code_ptr = |
| origin->GetEntryPointFromQuickCompiledCodePtrSize(pointer_size_); |
| if (code_ptr != nullptr) { |
| method->SetEntryPointFromQuickCompiledCodePtrSize(code_ptr, pointer_size_); |
| } |
| } |
| } |
| |
| private: |
| const PointerSize pointer_size_; |
| ObjPtr<mirror::ClassLoader> class_loader_; |
| const std::vector<const DexFile*>* dex_files_; |
| ClassLinker* const class_linker_; |
| std::vector<std::pair<ArtMethod*, ArtMethod*>> methods_to_process_; |
| }; |
| |
| class OatWriter::WriteCodeMethodVisitor : public OrderedMethodVisitor { |
| public: |
| WriteCodeMethodVisitor(OatWriter* writer, |
| OutputStream* out, |
| const size_t file_offset, |
| size_t relative_offset, |
| OrderedMethodList ordered_methods) |
| : OrderedMethodVisitor(std::move(ordered_methods)), |
| writer_(writer), |
| offset_(relative_offset), |
| dex_file_(nullptr), |
| pointer_size_(GetInstructionSetPointerSize(writer_->compiler_driver_->GetInstructionSet())), |
| class_loader_(writer->HasImage() ? writer->image_writer_->GetClassLoader() : nullptr), |
| out_(out), |
| file_offset_(file_offset), |
| class_linker_(Runtime::Current()->GetClassLinker()), |
| dex_cache_(nullptr), |
| no_thread_suspension_("OatWriter patching") { |
| patched_code_.reserve(16 * KB); |
| if (writer_->HasBootImage()) { |
| // If we're creating the image, the address space must be ready so that we can apply patches. |
| CHECK(writer_->image_writer_->IsImageAddressSpaceReady()); |
| } |
| } |
| |
| virtual bool VisitStart() OVERRIDE { |
| return true; |
| } |
| |
| void UpdateDexFileAndDexCache(const DexFile* dex_file) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| dex_file_ = dex_file; |
| |
| // Ordered method visiting is only for compiled methods. |
| DCHECK(writer_->MayHaveCompiledMethods()); |
| |
| if (writer_->GetCompilerDriver()->GetCompilerOptions().IsAotCompilationEnabled()) { |
| // Only need to set the dex cache if we have compilation. Other modes might have unloaded it. |
| if (dex_cache_ == nullptr || dex_cache_->GetDexFile() != dex_file) { |
| dex_cache_ = class_linker_->FindDexCache(Thread::Current(), *dex_file); |
| DCHECK(dex_cache_ != nullptr); |
| } |
| } |
| } |
| |
| virtual bool VisitComplete() { |
| offset_ = writer_->relative_patcher_->WriteThunks(out_, offset_); |
| if (UNLIKELY(offset_ == 0u)) { |
| PLOG(ERROR) << "Failed to write final relative call thunks"; |
| return false; |
| } |
| return true; |
| } |
| |
| virtual bool VisitMethod(const OrderedMethodData& method_data) OVERRIDE |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| const MethodReference& method_ref = method_data.method_reference; |
| UpdateDexFileAndDexCache(method_ref.dex_file); |
| |
| OatClass* oat_class = method_data.oat_class; |
| CompiledMethod* compiled_method = method_data.compiled_method; |
| uint16_t method_offsets_index = method_data.method_offsets_index; |
| |
| // No thread suspension since dex_cache_ that may get invalidated if that occurs. |
| ScopedAssertNoThreadSuspension tsc(__FUNCTION__); |
| DCHECK(HasCompiledCode(compiled_method)) << method_ref.PrettyMethod(); |
| |
| // TODO: cleanup DCHECK_OFFSET_ to accept file_offset as parameter. |
| size_t file_offset = file_offset_; // Used by DCHECK_OFFSET_ macro. |
| OutputStream* out = out_; |
| |
| ArrayRef<const uint8_t> quick_code = compiled_method->GetQuickCode(); |
| uint32_t code_size = quick_code.size() * sizeof(uint8_t); |
| |
| // Deduplicate code arrays. |
| const OatMethodOffsets& method_offsets = oat_class->method_offsets_[method_offsets_index]; |
| if (method_offsets.code_offset_ > offset_) { |
| offset_ = writer_->relative_patcher_->WriteThunks(out, offset_); |
| if (offset_ == 0u) { |
| ReportWriteFailure("relative call thunk", method_ref); |
| return false; |
| } |
| uint32_t alignment_size = CodeAlignmentSize(offset_, *compiled_method); |
| if (alignment_size != 0) { |
| if (!writer_->WriteCodeAlignment(out, alignment_size)) { |
| ReportWriteFailure("code alignment padding", method_ref); |
| return false; |
| } |
| offset_ += alignment_size; |
| DCHECK_OFFSET_(); |
| } |
| DCHECK_ALIGNED_PARAM(offset_ + sizeof(OatQuickMethodHeader), |
| GetInstructionSetAlignment(compiled_method->GetInstructionSet())); |
| DCHECK_EQ(method_offsets.code_offset_, |
| offset_ + sizeof(OatQuickMethodHeader) + compiled_method->CodeDelta()) |
| << dex_file_->PrettyMethod(method_ref.index); |
| const OatQuickMethodHeader& method_header = |
| oat_class->method_headers_[method_offsets_index]; |
| if (!out->WriteFully(&method_header, sizeof(method_header))) { |
| ReportWriteFailure("method header", method_ref); |
| return false; |
| } |
| writer_->size_method_header_ += sizeof(method_header); |
| offset_ += sizeof(method_header); |
| DCHECK_OFFSET_(); |
| |
| if (!compiled_method->GetPatches().empty()) { |
| patched_code_.assign(quick_code.begin(), quick_code.end()); |
| quick_code = ArrayRef<const uint8_t>(patched_code_); |
| for (const LinkerPatch& patch : compiled_method->GetPatches()) { |
| uint32_t literal_offset = patch.LiteralOffset(); |
| switch (patch.GetType()) { |
| case LinkerPatch::Type::kMethodBssEntry: { |
| uint32_t target_offset = |
| writer_->bss_start_ + writer_->bss_method_entries_.Get(patch.TargetMethod()); |
| writer_->relative_patcher_->PatchPcRelativeReference(&patched_code_, |
| patch, |
| offset_ + literal_offset, |
| target_offset); |
| break; |
| } |
| case LinkerPatch::Type::kCallRelative: { |
| // NOTE: Relative calls across oat files are not supported. |
| uint32_t target_offset = GetTargetOffset(patch); |
| writer_->relative_patcher_->PatchCall(&patched_code_, |
| literal_offset, |
| offset_ + literal_offset, |
| target_offset); |
| break; |
| } |
| case LinkerPatch::Type::kStringRelative: { |
| uint32_t target_offset = GetTargetObjectOffset(GetTargetString(patch)); |
| writer_->relative_patcher_->PatchPcRelativeReference(&patched_code_, |
| patch, |
| offset_ + literal_offset, |
| target_offset); |
| break; |
| } |
| case LinkerPatch::Type::kStringInternTable: { |
| uint32_t target_offset = GetInternTableEntryOffset(patch); |
| writer_->relative_patcher_->PatchPcRelativeReference(&patched_code_, |
| patch, |
| offset_ + literal_offset, |
| target_offset); |
| break; |
| } |
| case LinkerPatch::Type::kStringBssEntry: { |
| StringReference ref(patch.TargetStringDexFile(), patch.TargetStringIndex()); |
| uint32_t target_offset = |
| writer_->bss_start_ + writer_->bss_string_entries_.Get(ref); |
| writer_->relative_patcher_->PatchPcRelativeReference(&patched_code_, |
| patch, |
| offset_ + literal_offset, |
| target_offset); |
| break; |
| } |
| case LinkerPatch::Type::kTypeRelative: { |
| uint32_t target_offset = GetTargetObjectOffset(GetTargetType(patch)); |
| writer_->relative_patcher_->PatchPcRelativeReference(&patched_code_, |
| patch, |
| offset_ + literal_offset, |
| target_offset); |
| break; |
| } |
| case LinkerPatch::Type::kTypeClassTable: { |
| uint32_t target_offset = GetClassTableEntryOffset(patch); |
| writer_->relative_patcher_->PatchPcRelativeReference(&patched_code_, |
| patch, |
| offset_ + literal_offset, |
| target_offset); |
| break; |
| } |
| case LinkerPatch::Type::kTypeBssEntry: { |
| TypeReference ref(patch.TargetTypeDexFile(), patch.TargetTypeIndex()); |
| uint32_t target_offset = writer_->bss_start_ + writer_->bss_type_entries_.Get(ref); |
| writer_->relative_patcher_->PatchPcRelativeReference(&patched_code_, |
| patch, |
| offset_ + literal_offset, |
| target_offset); |
| break; |
| } |
| case LinkerPatch::Type::kCall: { |
| uint32_t target_offset = GetTargetOffset(patch); |
| PatchCodeAddress(&patched_code_, literal_offset, target_offset); |
| break; |
| } |
| case LinkerPatch::Type::kMethodRelative: { |
| uint32_t target_offset = GetTargetMethodOffset(GetTargetMethod(patch)); |
| writer_->relative_patcher_->PatchPcRelativeReference(&patched_code_, |
| patch, |
| offset_ + literal_offset, |
| target_offset); |
| break; |
| } |
| case LinkerPatch::Type::kBakerReadBarrierBranch: { |
| writer_->relative_patcher_->PatchBakerReadBarrierBranch(&patched_code_, |
| patch, |
| offset_ + literal_offset); |
| break; |
| } |
| default: { |
| DCHECK(false) << "Unexpected linker patch type: " << patch.GetType(); |
| break; |
| } |
| } |
| } |
| } |
| |
| if (!out->WriteFully(quick_code.data(), code_size)) { |
| ReportWriteFailure("method code", method_ref); |
| return false; |
| } |
| writer_->size_code_ += code_size; |
| offset_ += code_size; |
| } |
| DCHECK_OFFSET_(); |
| |
| return true; |
| } |
| |
| size_t GetOffset() const { |
| return offset_; |
| } |
| |
| private: |
| OatWriter* const writer_; |
| |
| // Updated in VisitMethod as methods are written out. |
| size_t offset_; |
| |
| // Potentially varies with every different VisitMethod. |
| // Used to determine which DexCache to use when finding ArtMethods. |
| const DexFile* dex_file_; |
| |
| // Pointer size we are compiling to. |
| const PointerSize pointer_size_; |
| // The image writer's classloader, if there is one, else null. |
| ObjPtr<mirror::ClassLoader> class_loader_; |
| // Stream to output file, where the OAT code will be written to. |
| OutputStream* const out_; |
| const size_t file_offset_; |
| ClassLinker* const class_linker_; |
| ObjPtr<mirror::DexCache> dex_cache_; |
| std::vector<uint8_t> patched_code_; |
| const ScopedAssertNoThreadSuspension no_thread_suspension_; |
| |
| void ReportWriteFailure(const char* what, const MethodReference& method_ref) { |
| PLOG(ERROR) << "Failed to write " << what << " for " |
| << method_ref.PrettyMethod() << " to " << out_->GetLocation(); |
| } |
| |
| ArtMethod* GetTargetMethod(const LinkerPatch& patch) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| MethodReference ref = patch.TargetMethod(); |
| ObjPtr<mirror::DexCache> dex_cache = |
| (dex_file_ == ref.dex_file) ? dex_cache_ : class_linker_->FindDexCache( |
| Thread::Current(), *ref.dex_file); |
| ArtMethod* method = |
| class_linker_->LookupResolvedMethod(ref.index, dex_cache, class_loader_); |
| CHECK(method != nullptr); |
| return method; |
| } |
| |
| uint32_t GetTargetOffset(const LinkerPatch& patch) REQUIRES_SHARED(Locks::mutator_lock_) { |
| uint32_t target_offset = writer_->relative_patcher_->GetOffset(patch.TargetMethod()); |
| // If there's no new compiled code, either we're compiling an app and the target method |
| // is in the boot image, or we need to point to the correct trampoline. |
| if (UNLIKELY(target_offset == 0)) { |
| ArtMethod* target = GetTargetMethod(patch); |
| DCHECK(target != nullptr); |
| const void* oat_code_offset = |
| target->GetEntryPointFromQuickCompiledCodePtrSize(pointer_size_); |
| if (oat_code_offset != 0) { |
| DCHECK(!writer_->HasBootImage()); |
| DCHECK(!Runtime::Current()->GetClassLinker()->IsQuickResolutionStub(oat_code_offset)); |
| DCHECK(!Runtime::Current()->GetClassLinker()->IsQuickToInterpreterBridge(oat_code_offset)); |
| DCHECK(!Runtime::Current()->GetClassLinker()->IsQuickGenericJniStub(oat_code_offset)); |
| target_offset = PointerToLowMemUInt32(oat_code_offset); |
| } else { |
| target_offset = target->IsNative() |
| ? writer_->oat_header_->GetQuickGenericJniTrampolineOffset() |
| : writer_->oat_header_->GetQuickToInterpreterBridgeOffset(); |
| } |
| } |
| return target_offset; |
| } |
| |
| ObjPtr<mirror::DexCache> GetDexCache(const DexFile* target_dex_file) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| return (target_dex_file == dex_file_) |
| ? dex_cache_ |
| : class_linker_->FindDexCache(Thread::Current(), *target_dex_file); |
| } |
| |
| mirror::Class* GetTargetType(const LinkerPatch& patch) REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK(writer_->HasImage()); |
| ObjPtr<mirror::DexCache> dex_cache = GetDexCache(patch.TargetTypeDexFile()); |
| ObjPtr<mirror::Class> type = |
| ClassLinker::LookupResolvedType(patch.TargetTypeIndex(), dex_cache, class_loader_); |
| CHECK(type != nullptr); |
| return type.Ptr(); |
| } |
| |
| mirror::String* GetTargetString(const LinkerPatch& patch) REQUIRES_SHARED(Locks::mutator_lock_) { |
| ClassLinker* linker = Runtime::Current()->GetClassLinker(); |
| mirror::String* string = linker->LookupString(*patch.TargetStringDexFile(), |
| patch.TargetStringIndex(), |
| GetDexCache(patch.TargetStringDexFile())); |
| DCHECK(string != nullptr); |
| DCHECK(writer_->HasBootImage() || |
| Runtime::Current()->GetHeap()->ObjectIsInBootImageSpace(string)); |
| return string; |
| } |
| |
| uint32_t GetTargetMethodOffset(ArtMethod* method) REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK(writer_->HasBootImage()); |
| method = writer_->image_writer_->GetImageMethodAddress(method); |
| size_t oat_index = writer_->image_writer_->GetOatIndexForDexFile(dex_file_); |
| uintptr_t oat_data_begin = writer_->image_writer_->GetOatDataBegin(oat_index); |
| // TODO: Clean up offset types. The target offset must be treated as signed. |
| return static_cast<uint32_t>(reinterpret_cast<uintptr_t>(method) - oat_data_begin); |
| } |
| |
| uint32_t GetTargetObjectOffset(mirror::Object* object) REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK(writer_->HasBootImage()); |
| object = writer_->image_writer_->GetImageAddress(object); |
| size_t oat_index = writer_->image_writer_->GetOatIndexForDexFile(dex_file_); |
| uintptr_t oat_data_begin = writer_->image_writer_->GetOatDataBegin(oat_index); |
| // TODO: Clean up offset types. The target offset must be treated as signed. |
| return static_cast<uint32_t>(reinterpret_cast<uintptr_t>(object) - oat_data_begin); |
| } |
| |
| void PatchObjectAddress(std::vector<uint8_t>* code, uint32_t offset, mirror::Object* object) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| if (writer_->HasBootImage()) { |
| object = writer_->image_writer_->GetImageAddress(object); |
| } else { |
| // NOTE: We're using linker patches for app->boot references when the image can |
| // be relocated and therefore we need to emit .oat_patches. We're not using this |
| // for app->app references, so check that the object is in the image space. |
| DCHECK(Runtime::Current()->GetHeap()->FindSpaceFromObject(object, false)->IsImageSpace()); |
| } |
| // Note: We only patch targeting Objects in image which is in the low 4gb. |
| uint32_t address = PointerToLowMemUInt32(object); |
| DCHECK_LE(offset + 4, code->size()); |
| uint8_t* data = &(*code)[offset]; |
| data[0] = address & 0xffu; |
| data[1] = (address >> 8) & 0xffu; |
| data[2] = (address >> 16) & 0xffu; |
| data[3] = (address >> 24) & 0xffu; |
| } |
| |
| void PatchCodeAddress(std::vector<uint8_t>* code, uint32_t offset, uint32_t target_offset) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| uint32_t address = target_offset; |
| if (writer_->HasBootImage()) { |
| size_t oat_index = writer_->image_writer_->GetOatIndexForDexCache(dex_cache_); |
| // TODO: Clean up offset types. |
| // The target_offset must be treated as signed for cross-oat patching. |
| const void* target = reinterpret_cast<const void*>( |
| writer_->image_writer_->GetOatDataBegin(oat_index) + |
| static_cast<int32_t>(target_offset)); |
| address = PointerToLowMemUInt32(target); |
| } |
| DCHECK_LE(offset + 4, code->size()); |
| uint8_t* data = &(*code)[offset]; |
| data[0] = address & 0xffu; |
| data[1] = (address >> 8) & 0xffu; |
| data[2] = (address >> 16) & 0xffu; |
| data[3] = (address >> 24) & 0xffu; |
| } |
| |
| // Calculate the offset of the InternTable slot (GcRoot<String>) when mmapped to the .bss. |
| uint32_t GetInternTableEntryOffset(const LinkerPatch& patch) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK(!writer_->HasBootImage()); |
| const uint8_t* string_root = writer_->LookupBootImageInternTableSlot( |
| *patch.TargetStringDexFile(), patch.TargetStringIndex()); |
| DCHECK(string_root != nullptr); |
| return GetBootImageTableEntryOffset(string_root); |
| } |
| |
| // Calculate the offset of the ClassTable::TableSlot when mmapped to the .bss. |
| uint32_t GetClassTableEntryOffset(const LinkerPatch& patch) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| DCHECK(!writer_->HasBootImage()); |
| const uint8_t* table_slot = |
| writer_->LookupBootImageClassTableSlot(*patch.TargetTypeDexFile(), patch.TargetTypeIndex()); |
| DCHECK(table_slot != nullptr); |
| return GetBootImageTableEntryOffset(table_slot); |
| } |
| |
| uint32_t GetBootImageTableEntryOffset(const uint8_t* raw_root) { |
| uint32_t base_offset = writer_->bss_start_; |
| for (gc::space::ImageSpace* space : Runtime::Current()->GetHeap()->GetBootImageSpaces()) { |
| const uint8_t* const_tables_begin = |
| space->Begin() + space->GetImageHeader().GetBootImageConstantTablesOffset(); |
| size_t offset = static_cast<size_t>(raw_root - const_tables_begin); |
| if (offset < space->GetImageHeader().GetBootImageConstantTablesSize()) { |
| DCHECK_LE(base_offset + offset, writer_->bss_start_ + writer_->bss_methods_offset_); |
| return base_offset + offset; |
| } |
| base_offset += space->GetImageHeader().GetBootImageConstantTablesSize(); |
| } |
| LOG(FATAL) << "Didn't find boot image string in boot image intern tables!"; |
| UNREACHABLE(); |
| } |
| }; |
| |
| class OatWriter::WriteMapMethodVisitor : public OatDexMethodVisitor { |
| public: |
| WriteMapMethodVisitor(OatWriter* writer, |
| OutputStream* out, |
| const size_t file_offset, |
| size_t relative_offset) |
| : OatDexMethodVisitor(writer, relative_offset), |
| out_(out), |
| file_offset_(file_offset) {} |
| |
| bool VisitMethod(size_t class_def_method_index, const ClassDataItemIterator& it) OVERRIDE { |
| OatClass* oat_class = &writer_->oat_classes_[oat_class_index_]; |
| const CompiledMethod* compiled_method = oat_class->GetCompiledMethod(class_def_method_index); |
| |
| if (HasCompiledCode(compiled_method)) { |
| size_t file_offset = file_offset_; |
| OutputStream* out = out_; |
| |
| uint32_t map_offset = oat_class->method_headers_[method_offsets_index_].GetVmapTableOffset(); |
| uint32_t code_offset = oat_class->method_offsets_[method_offsets_index_].code_offset_; |
| ++method_offsets_index_; |
| |
| DCHECK((compiled_method->GetVmapTable().size() == 0u && map_offset == 0u) || |
| (compiled_method->GetVmapTable().size() != 0u && map_offset != 0u)) |
| << compiled_method->GetVmapTable().size() << " " << map_offset << " " |
| << dex_file_->PrettyMethod(it.GetMemberIndex()); |
| |
| // If vdex is enabled, only emit the map for compiled code. The quickening info |
| // is emitted in the vdex already. |
| if (map_offset != 0u) { |
| // Transform map_offset to actual oat data offset. |
| map_offset = (code_offset - compiled_method->CodeDelta()) - map_offset; |
| DCHECK_NE(map_offset, 0u); |
| DCHECK_LE(map_offset, offset_) << dex_file_->PrettyMethod(it.GetMemberIndex()); |
| |
| ArrayRef<const uint8_t> map = compiled_method->GetVmapTable(); |
| size_t map_size = map.size() * sizeof(map[0]); |
| if (map_offset == offset_) { |
| // Write deduplicated map (code info for Optimizing or transformation info for dex2dex). |
| if (UNLIKELY(!out->WriteFully(map.data(), map_size))) { |
| ReportWriteFailure(it); |
| return false; |
| } |
| offset_ += map_size; |
| } |
| } |
| DCHECK_OFFSET_(); |
| } |
| |
| return true; |
| } |
| |
| private: |
| OutputStream* const out_; |
| size_t const file_offset_; |
| |
| void ReportWriteFailure(const ClassDataItemIterator& it) { |
| PLOG(ERROR) << "Failed to write map for " |
| << dex_file_->PrettyMethod(it.GetMemberIndex()) << " to " << out_->GetLocation(); |
| } |
| }; |
| |
| class OatWriter::WriteMethodInfoVisitor : public OatDexMethodVisitor { |
| public: |
| WriteMethodInfoVisitor(OatWriter* writer, |
| OutputStream* out, |
| const size_t file_offset, |
| size_t relative_offset) |
| : OatDexMethodVisitor(writer, relative_offset), |
| out_(out), |
| file_offset_(file_offset) {} |
| |
| bool VisitMethod(size_t class_def_method_index, const ClassDataItemIterator& it) OVERRIDE { |
| OatClass* oat_class = &writer_->oat_classes_[oat_class_index_]; |
| const CompiledMethod* compiled_method = oat_class->GetCompiledMethod(class_def_method_index); |
| |
| if (HasCompiledCode(compiled_method)) { |
| size_t file_offset = file_offset_; |
| OutputStream* out = out_; |
| uint32_t map_offset = oat_class->method_headers_[method_offsets_index_].GetMethodInfoOffset(); |
| uint32_t code_offset = oat_class->method_offsets_[method_offsets_index_].code_offset_; |
| ++method_offsets_index_; |
| DCHECK((compiled_method->GetMethodInfo().size() == 0u && map_offset == 0u) || |
| (compiled_method->GetMethodInfo().size() != 0u && map_offset != 0u)) |
| << compiled_method->GetMethodInfo().size() << " " << map_offset << " " |
| << dex_file_->PrettyMethod(it.GetMemberIndex()); |
| if (map_offset != 0u) { |
| // Transform map_offset to actual oat data offset. |
| map_offset = (code_offset - compiled_method->CodeDelta()) - map_offset; |
| DCHECK_NE(map_offset, 0u); |
| DCHECK_LE(map_offset, offset_) << dex_file_->PrettyMethod(it.GetMemberIndex()); |
| |
| ArrayRef<const uint8_t> map = compiled_method->GetMethodInfo(); |
| size_t map_size = map.size() * sizeof(map[0]); |
| if (map_offset == offset_) { |
| // Write deduplicated map (code info for Optimizing or transformation info for dex2dex). |
| if (UNLIKELY(!out->WriteFully(map.data(), map_size))) { |
| ReportWriteFailure(it); |
| return false; |
| } |
| offset_ += map_size; |
| } |
| } |
| DCHECK_OFFSET_(); |
| } |
| |
| return true; |
| } |
| |
| private: |
| OutputStream* const out_; |
| size_t const file_offset_; |
| |
| void ReportWriteFailure(const ClassDataItemIterator& it) { |
| PLOG(ERROR) << "Failed to write map for " |
| << dex_file_->PrettyMethod(it.GetMemberIndex()) << " to " << out_->GetLocation(); |
| } |
| }; |
| |
| // Visit all methods from all classes in all dex files with the specified visitor. |
| bool OatWriter::VisitDexMethods(DexMethodVisitor* visitor) { |
| for (const DexFile* dex_file : *dex_files_) { |
| const size_t class_def_count = dex_file->NumClassDefs(); |
| for (size_t class_def_index = 0; class_def_index != class_def_count; ++class_def_index) { |
| if (UNLIKELY(!visitor->StartClass(dex_file, class_def_index))) { |
| return false; |
| } |
| if (MayHaveCompiledMethods()) { |
| const DexFile::ClassDef& class_def = dex_file->GetClassDef(class_def_index); |
| const uint8_t* class_data = dex_file->GetClassData(class_def); |
| if (class_data != nullptr) { // ie not an empty class, such as a marker interface |
| ClassDataItemIterator it(*dex_file, class_data); |
| it.SkipAllFields(); |
| size_t class_def_method_index = 0u; |
| while (it.HasNextDirectMethod()) { |
| if (!visitor->VisitMethod(class_def_method_index, it)) { |
| return false; |
| } |
| ++class_def_method_index; |
| it.Next(); |
| } |
| while (it.HasNextVirtualMethod()) { |
| if (UNLIKELY(!visitor->VisitMethod(class_def_method_index, it))) { |
| return false; |
| } |
| ++class_def_method_index; |
| it.Next(); |
| } |
| } |
| } |
| if (UNLIKELY(!visitor->EndClass())) { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| size_t OatWriter::InitOatHeader(InstructionSet instruction_set, |
| const InstructionSetFeatures* instruction_set_features, |
| uint32_t num_dex_files, |
| SafeMap<std::string, std::string>* key_value_store) { |
| TimingLogger::ScopedTiming split("InitOatHeader", timings_); |
| oat_header_.reset(OatHeader::Create(instruction_set, |
| instruction_set_features, |
| num_dex_files, |
| key_value_store)); |
| size_oat_header_ += sizeof(OatHeader); |
| size_oat_header_key_value_store_ += oat_header_->GetHeaderSize() - sizeof(OatHeader); |
| return oat_header_->GetHeaderSize(); |
| } |
| |
| size_t OatWriter::InitClassOffsets(size_t offset) { |
| // Reserve space for class offsets in OAT and update class_offsets_offset_. |
| for (OatDexFile& oat_dex_file : oat_dex_files_) { |
| DCHECK_EQ(oat_dex_file.class_offsets_offset_, 0u); |
| if (!oat_dex_file.class_offsets_.empty()) { |
| // Class offsets are required to be 4 byte aligned. |
| offset = RoundUp(offset, 4u); |
| oat_dex_file.class_offsets_offset_ = offset; |
| offset += oat_dex_file.GetClassOffsetsRawSize(); |
| DCHECK_ALIGNED(offset, 4u); |
| } |
| } |
| return offset; |
| } |
| |
| size_t OatWriter::InitOatClasses(size_t offset) { |
| // calculate the offsets within OatDexFiles to OatClasses |
| InitOatClassesMethodVisitor visitor(this, offset); |
| bool success = VisitDexMethods(&visitor); |
| CHECK(success); |
| offset = visitor.GetOffset(); |
| |
| // Update oat_dex_files_. |
| auto oat_class_it = oat_class_headers_.begin(); |
| for (OatDexFile& oat_dex_file : oat_dex_files_) { |
| for (uint32_t& class_offset : oat_dex_file.class_offsets_) { |
| DCHECK(oat_class_it != oat_class_headers_.end()); |
| class_offset = oat_class_it->offset_; |
| ++oat_class_it; |
| } |
| } |
| CHECK(oat_class_it == oat_class_headers_.end()); |
| |
| return offset; |
| } |
| |
| size_t OatWriter::InitOatMaps(size_t offset) { |
| if (!MayHaveCompiledMethods()) { |
| return offset; |
| } |
| { |
| InitMapMethodVisitor visitor(this, offset); |
| bool success = VisitDexMethods(&visitor); |
| DCHECK(success); |
| offset = visitor.GetOffset(); |
| } |
| { |
| InitMethodInfoVisitor visitor(this, offset); |
| bool success = VisitDexMethods(&visitor); |
| DCHECK(success); |
| offset = visitor.GetOffset(); |
| } |
| return offset; |
| } |
| |
| size_t OatWriter::InitMethodBssMappings(size_t offset) { |
| size_t number_of_dex_files = 0u; |
| for (size_t i = 0, size = dex_files_->size(); i != size; ++i) { |
| const DexFile* dex_file = (*dex_files_)[i]; |
| auto it = bss_method_entry_references_.find(dex_file); |
| if (it != bss_method_entry_references_.end()) { |
| const BitVector& method_indexes = it->second; |
| ++number_of_dex_files; |
| // If there are any classes, the class offsets allocation aligns the offset |
| // and we cannot have method bss mappings without class offsets. |
| static_assert(alignof(MethodBssMapping) == 4u, "MethodBssMapping alignment check."); |
| DCHECK_ALIGNED(offset, 4u); |
| oat_dex_files_[i].method_bss_mapping_offset_ = offset; |
| |
| MethodBssMappingEncoder encoder( |
| GetInstructionSetPointerSize(oat_header_->GetInstructionSet())); |
| size_t number_of_entries = 0u; |
| bool first_index = true; |
| for (uint32_t method_index : method_indexes.Indexes()) { |
| uint32_t bss_offset = bss_method_entries_.Get(MethodReference(dex_file, method_index)); |
| if (first_index || !encoder.TryMerge(method_index, bss_offset)) { |
| encoder.Reset(method_index, bss_offset); |
| ++number_of_entries; |
| first_index = false; |
| } |
| } |
| DCHECK_NE(number_of_entries, 0u); |
| offset += MethodBssMapping::ComputeSize(number_of_entries); |
| } |
| } |
| // Check that all dex files targeted by method bss entries are in `*dex_files_`. |
| CHECK_EQ(number_of_dex_files, bss_method_entry_references_.size()); |
| return offset; |
| } |
| |
| size_t OatWriter::InitOatDexFiles(size_t offset) { |
| // Initialize offsets of oat dex files. |
| for (OatDexFile& oat_dex_file : oat_dex_files_) { |
| oat_dex_file.offset_ = offset; |
| offset += oat_dex_file.SizeOf(); |
| } |
| return offset; |
| } |
| |
| size_t OatWriter::InitOatCode(size_t offset) { |
| // calculate the offsets within OatHeader to executable code |
| size_t old_offset = offset; |
| // required to be on a new page boundary |
| offset = RoundUp(offset, kPageSize); |
| oat_header_->SetExecutableOffset(offset); |
| size_executable_offset_alignment_ = offset - old_offset; |
| // TODO: Remove unused trampoline offsets from the OatHeader (requires oat version change). |
| oat_header_->SetInterpreterToInterpreterBridgeOffset(0); |
| oat_header_->SetInterpreterToCompiledCodeBridgeOffset(0); |
| if (compiler_driver_->GetCompilerOptions().IsBootImage()) { |
| InstructionSet instruction_set = compiler_driver_->GetInstructionSet(); |
| const bool generate_debug_info = compiler_driver_->GetCompilerOptions().GenerateAnyDebugInfo(); |
| size_t adjusted_offset = offset; |
| |
| #define DO_TRAMPOLINE(field, fn_name) \ |
| offset = CompiledCode::AlignCode(offset, instruction_set); \ |
| adjusted_offset = offset + CompiledCode::CodeDelta(instruction_set); \ |
| oat_header_->Set ## fn_name ## Offset(adjusted_offset); \ |
| (field) = compiler_driver_->Create ## fn_name(); \ |
| if (generate_debug_info) { \ |
| debug::MethodDebugInfo info = {}; \ |
| info.trampoline_name = #fn_name; \ |
| info.isa = instruction_set; \ |
| info.is_code_address_text_relative = true; \ |
| /* Use the code offset rather than the `adjusted_offset`. */ \ |
| info.code_address = offset - oat_header_->GetExecutableOffset(); \ |
| info.code_size = (field)->size(); \ |
| method_info_.push_back(std::move(info)); \ |
| } \ |
| offset += (field)->size(); |
| |
| DO_TRAMPOLINE(jni_dlsym_lookup_, JniDlsymLookup); |
| DO_TRAMPOLINE(quick_generic_jni_trampoline_, QuickGenericJniTrampoline); |
| DO_TRAMPOLINE(quick_imt_conflict_trampoline_, QuickImtConflictTrampoline); |
| DO_TRAMPOLINE(quick_resolution_trampoline_, QuickResolutionTrampoline); |
| DO_TRAMPOLINE(quick_to_interpreter_bridge_, QuickToInterpreterBridge); |
| |
| #undef DO_TRAMPOLINE |
| } else { |
| oat_header_->SetJniDlsymLookupOffset(0); |
| oat_header_->SetQuickGenericJniTrampolineOffset(0); |
| oat_header_->SetQuickImtConflictTrampolineOffset(0); |
| oat_header_->SetQuickResolutionTrampolineOffset(0); |
| oat_header_->SetQuickToInterpreterBridgeOffset(0); |
| } |
| return offset; |
| } |
| |
| size_t OatWriter::InitOatCodeDexFiles(size_t offset) { |
| if (!compiler_driver_->GetCompilerOptions().IsAnyCompilationEnabled()) { |
| if (kOatWriterDebugOatCodeLayout) { |
| LOG(INFO) << "InitOatCodeDexFiles: OatWriter(" |
| << this << "), " |
| << "compilation is disabled"; |
| } |
| |
| return offset; |
| } |
| bool success = false; |
| |
| { |
| ScopedObjectAccess soa(Thread::Current()); |
| |
| LayoutCodeMethodVisitor layout_code_visitor(this, offset); |
| success = VisitDexMethods(&layout_code_visitor); |
| DCHECK(success); |
| |
| LayoutReserveOffsetCodeMethodVisitor layout_reserve_code_visitor( |
| this, |
| offset, |
| layout_code_visitor.ReleaseOrderedMethods()); |
| success = layout_reserve_code_visitor.Visit(); |
| DCHECK(success); |
| offset = layout_reserve_code_visitor.GetOffset(); |
| |
| // Save the method order because the WriteCodeMethodVisitor will need this |
| // order again. |
| DCHECK(ordered_methods_ == nullptr); |
| ordered_methods_.reset( |
| new OrderedMethodList( |
| layout_reserve_code_visitor.ReleaseOrderedMethods())); |
| |
| if (kOatWriterDebugOatCodeLayout) { |
| LOG(INFO) << "IniatOatCodeDexFiles: method order: "; |
| for (const OrderedMethodData& ordered_method : *ordered_methods_) { |
| std::string pretty_name = ordered_method.method_reference.PrettyMethod(); |
| LOG(INFO) << pretty_name |
| << "@ offset " |
| << relative_patcher_->GetOffset(ordered_method.method_reference) |
| << " X hotness " |
| << reinterpret_cast<void*>(ordered_method.method_hotness.GetFlags()); |
| } |
| } |
| } |
| |
| if (HasImage()) { |
| InitImageMethodVisitor image_visitor(this, offset, dex_files_); |
| success = VisitDexMethods(&image_visitor); |
| image_visitor.Postprocess(); |
| DCHECK(success); |
| offset = image_visitor.GetOffset(); |
| } |
| |
| return offset; |
| } |
| |
| void OatWriter::InitBssLayout(InstructionSet instruction_set) { |
| { |
| InitBssLayoutMethodVisitor visitor(this); |
| bool success = VisitDexMethods(&visitor); |
| DCHECK(success); |
| } |
| |
| DCHECK_EQ(bss_size_, 0u); |
| if (HasBootImage()) { |
| DCHECK(!map_boot_image_tables_to_bss_); |
| DCHECK(bss_string_entries_.empty()); |
| } |
| if (!map_boot_image_tables_to_bss_ && |
| bss_method_entries_.empty() && |
| bss_type_entries_.empty() && |
| bss_string_entries_.empty()) { |
| // Nothing to put to the .bss section. |
| return; |
| } |
| |
| // Allocate space for boot image tables in the .bss section. |
| PointerSize pointer_size = GetInstructionSetPointerSize(instruction_set); |
| if (map_boot_image_tables_to_bss_) { |
| for (gc::space::ImageSpace* space : Runtime::Current()->GetHeap()->GetBootImageSpaces()) { |
| bss_size_ += space->GetImageHeader().GetBootImageConstantTablesSize(); |
| } |
| } |
| |
| bss_methods_offset_ = bss_size_; |
| |
| // Prepare offsets for .bss ArtMethod entries. |
| for (auto& entry : bss_method_entries_) { |
| DCHECK_EQ(entry.second, 0u); |
| entry.second = bss_size_; |
| bss_size_ += static_cast<size_t>(pointer_size); |
| } |
| |
| bss_roots_offset_ = bss_size_; |
| |
| // Prepare offsets for .bss Class entries. |
| for (auto& entry : bss_type_entries_) { |
| DCHECK_EQ(entry.second, 0u); |
| entry.second = bss_size_; |
| bss_size_ += sizeof(GcRoot<mirror::Class>); |
| } |
| // Prepare offsets for .bss String entries. |
| for (auto& entry : bss_string_entries_) { |
| DCHECK_EQ(entry.second, 0u); |
| entry.second = bss_size_; |
| bss_size_ += sizeof(GcRoot<mirror::String>); |
| } |
| } |
| |
| bool OatWriter::WriteRodata(OutputStream* out) { |
| CHECK(write_state_ == WriteState::kWriteRoData); |
| |
| size_t file_offset = oat_data_offset_; |
| off_t current_offset = out->Seek(0, kSeekCurrent); |
| if (current_offset == static_cast<off_t>(-1)) { |
| PLOG(ERROR) << "Failed to retrieve current position in " << out->GetLocation(); |
| } |
| DCHECK_GE(static_cast<size_t>(current_offset), file_offset + oat_header_->GetHeaderSize()); |
| size_t relative_offset = current_offset - file_offset; |
| |
| // Wrap out to update checksum with each write. |
| ChecksumUpdatingOutputStream checksum_updating_out(out, oat_header_.get()); |
| out = &checksum_updating_out; |
| |
| relative_offset = WriteClassOffsets(out, file_offset, relative_offset); |
| if (relative_offset == 0) { |
| PLOG(ERROR) << "Failed to write class offsets to " << out->GetLocation(); |
| return false; |
| } |
| |
| relative_offset = WriteClasses(out, file_offset, relative_offset); |
| if (relative_offset == 0) { |
| PLOG(ERROR) << "Failed to write classes to " << out->GetLocation(); |
| return false; |
| } |
| |
| relative_offset = WriteMethodBssMappings(out, file_offset, relative_offset); |
| if (relative_offset == 0) { |
| PLOG(ERROR) << "Failed to write method bss mappings to " << out->GetLocation(); |
| return false; |
| } |
| |
| relative_offset = WriteMaps(out, file_offset, relative_offset); |
| if (relative_offset == 0) { |
| PLOG(ERROR) << "Failed to write oat code to " << out->GetLocation(); |
| return false; |
| } |
| |
| relative_offset = WriteOatDexFiles(out, file_offset, relative_offset); |
| if (relative_offset == 0) { |
| PLOG(ERROR) << "Failed to write oat dex information to " << out->GetLocation(); |
| return false; |
| } |
| |
| // Write padding. |
| off_t new_offset = out->Seek(size_executable_offset_alignment_, kSeekCurrent); |
| relative_offset += size_executable_offset_alignment_; |
| DCHECK_EQ(relative_offset, oat_header_->GetExecutableOffset()); |
| size_t expected_file_offset = file_offset + relative_offset; |
| if (static_cast<uint32_t>(new_offset) != expected_file_offset) { |
| PLOG(ERROR) << "Failed to seek to oat code section. Actual: " << new_offset |
| << " Expected: " << expected_file_offset << " File: " << out->GetLocation(); |
| return 0; |
| } |
| DCHECK_OFFSET(); |
| |
| write_state_ = WriteState::kWriteText; |
| return true; |
| } |
| |
| class OatWriter::WriteQuickeningInfoMethodVisitor : public DexMethodVisitor { |
| public: |
| WriteQuickeningInfoMethodVisitor(OatWriter* writer, |
| OutputStream* out, |
| uint32_t offset, |
| SafeMap<const uint8_t*, uint32_t>* offset_map) |
| : DexMethodVisitor(writer, offset), |
| out_(out), |
| written_bytes_(0u), |
| offset_map_(offset_map) {} |
| |
| bool VisitMethod(size_t class_def_method_index ATTRIBUTE_UNUSED, const ClassDataItemIterator& it) |
| OVERRIDE { |
| uint32_t method_idx = it.GetMemberIndex(); |
| CompiledMethod* compiled_method = |
| writer_->compiler_driver_->GetCompiledMethod(MethodReference(dex_file_, method_idx)); |
| |
| if (HasQuickeningInfo(compiled_method)) { |
| ArrayRef<const uint8_t> map = compiled_method->GetVmapTable(); |
| // Deduplication is already done on a pointer basis by the compiler driver, |
| // so we can simply compare the pointers to find out if things are duplicated. |
| if (offset_map_->find(map.data()) == offset_map_->end()) { |
| uint32_t length = map.size() * sizeof(map.front()); |
| offset_map_->Put(map.data(), written_bytes_); |
| if (!out_->WriteFully(&length, sizeof(length)) || |
| !out_->WriteFully(map.data(), length)) { |
| PLOG(ERROR) << "Failed to write quickening info for " |
| << dex_file_->PrettyMethod(it.GetMemberIndex()) << " to " |
| << out_->GetLocation(); |
| return false; |
| } |
| written_bytes_ += sizeof(length) + length; |
| offset_ += sizeof(length) + length; |
| } |
| } |
| |
| return true; |
| } |
| |
| size_t GetNumberOfWrittenBytes() const { |
| return written_bytes_; |
| } |
| |
| private: |
| OutputStream* const out_; |
| size_t written_bytes_; |
| // Maps quickening map to its offset in the file. |
| SafeMap<const uint8_t*, uint32_t>* offset_map_; |
| }; |
| |
| class OatWriter::WriteQuickeningIndicesMethodVisitor { |
| public: |
| WriteQuickeningIndicesMethodVisitor(OutputStream* out, |
| uint32_t indices_offset, |
| const SafeMap<const uint8_t*, uint32_t>& offset_map, |
| std::vector<uint32_t>* dex_files_offset) |
| : out_(out), |
| indices_offset_(indices_offset), |
| written_bytes_(0u), |
| dex_files_offset_(dex_files_offset), |
| offset_map_(offset_map) {} |
| |
| bool VisitDexMethods(const std::vector<const DexFile*>& dex_files, const CompilerDriver& driver) { |
| for (const DexFile* dex_file : dex_files) { |
| // Record the offset for this current dex file. It will be written in the vdex file |
| // later. |
| dex_files_offset_->push_back(indices_offset_ + GetNumberOfWrittenBytes()); |
| const size_t class_def_count = dex_file->NumClassDefs(); |
| for (size_t class_def_index = 0; class_def_index != class_def_count; ++class_def_index) { |
| const DexFile::ClassDef& class_def = dex_file->GetClassDef(class_def_index); |
| const uint8_t* class_data = dex_file->GetClassData(class_def); |
| if (class_data == nullptr) { |
| continue; |
| } |
| for (ClassDataItemIterator class_it(*dex_file, class_data); |
| class_it.HasNext(); |
| class_it.Next()) { |
| if (!class_it.IsAtMethod()) { |
| continue; |
| } |
| uint32_t method_idx = class_it.GetMemberIndex(); |
| CompiledMethod* compiled_method = |
| driver.GetCompiledMethod(MethodReference(dex_file, method_idx)); |
| if (HasQuickeningInfo(compiled_method)) { |
| uint32_t code_item_offset = class_it.GetMethodCodeItemOffset(); |
| uint32_t offset = offset_map_.Get(compiled_method->GetVmapTable().data()); |
| if (!out_->WriteFully(&code_item_offset, sizeof(code_item_offset)) || |
| !out_->WriteFully(&offset, sizeof(offset))) { |
| PLOG(ERROR) << "Failed to write quickening info for " |
| << dex_file->PrettyMethod(method_idx) << " to " |
| << out_->GetLocation(); |
| return false; |
| } |
| written_bytes_ += sizeof(code_item_offset) + sizeof(offset); |
| } |
| } |
| } |
| } |
| return true; |
| } |
| |
| size_t GetNumberOfWrittenBytes() const { |
| return written_bytes_; |
| } |
| |
| private: |
| OutputStream* const out_; |
| const uint32_t indices_offset_; |
| size_t written_bytes_; |
| std::vector<uint32_t>* dex_files_offset_; |
| // Maps quickening map to its offset in the file. |
| const SafeMap<const uint8_t*, uint32_t>& offset_map_; |
| }; |
| |
| bool OatWriter::WriteQuickeningInfo(OutputStream* vdex_out) { |
| if (!kIsVdexEnabled) { |
| return true; |
| } |
| |
| size_t initial_offset = vdex_size_; |
| size_t start_offset = RoundUp(initial_offset, 4u); |
| |
| vdex_size_ = start_offset; |
| vdex_quickening_info_offset_ = vdex_size_; |
| size_quickening_info_alignment_ = start_offset - initial_offset; |
| |
| off_t actual_offset = vdex_out->Seek(start_offset, kSeekSet); |
| if (actual_offset != static_cast<off_t>(start_offset)) { |
| PLOG(ERROR) << "Failed to seek to quickening info section. Actual: " << actual_offset |
| << " Expected: " << start_offset |
| << " Output: " << vdex_out->GetLocation(); |
| return false; |
| } |
| |
| if (compiler_driver_->GetCompilerOptions().IsAnyCompilationEnabled()) { |
| std::vector<uint32_t> dex_files_indices; |
| SafeMap<const uint8_t*, uint32_t> offset_map; |
| WriteQuickeningInfoMethodVisitor visitor1(this, vdex_out, start_offset, &offset_map); |
| if (!VisitDexMethods(&visitor1)) { |
| PLOG(ERROR) << "Failed to write the vdex quickening info. File: " << vdex_out->GetLocation(); |
| return false; |
| } |
| |
| WriteQuickeningIndicesMethodVisitor visitor2(vdex_out, |
| visitor1.GetNumberOfWrittenBytes(), |
| offset_map, |
| &dex_files_indices); |
| if (!visitor2.VisitDexMethods(*dex_files_, *compiler_driver_)) { |
| PLOG(ERROR) << "Failed to write the vdex quickening info. File: " << vdex_out->GetLocation(); |
| return false; |
| } |
| |
| DCHECK_EQ(dex_files_->size(), dex_files_indices.size()); |
| if (!vdex_out->WriteFully( |
| dex_files_indices.data(), sizeof(dex_files_indices[0]) * dex_files_indices.size())) { |
| PLOG(ERROR) << "Failed to write the vdex quickening info. File: " << vdex_out->GetLocation(); |
| return false; |
| } |
| |
| if (!vdex_out->Flush()) { |
| PLOG(ERROR) << "Failed to flush stream after writing quickening info." |
| << " File: " << vdex_out->GetLocation(); |
| return false; |
| } |
| size_quickening_info_ = visitor1.GetNumberOfWrittenBytes() + |
| visitor2.GetNumberOfWrittenBytes() + |
| dex_files_->size() * sizeof(uint32_t); |
| } else { |
| // We know we did not quicken. |
| size_quickening_info_ = 0; |
| } |
| |
| vdex_size_ += size_quickening_info_; |
| return true; |
| } |
| |
| bool OatWriter::WriteVerifierDeps(OutputStream* vdex_out, verifier::VerifierDeps* verifier_deps) { |
| if (!kIsVdexEnabled) { |
| return true; |
| } |
| |
| if (verifier_deps == nullptr) { |
| // Nothing to write. Record the offset, but no need |
| // for alignment. |
| vdex_verifier_deps_offset_ = vdex_size_; |
| return true; |
| } |
| |
| size_t initial_offset = vdex_size_; |
| size_t start_offset = RoundUp(initial_offset, 4u); |
| |
| vdex_size_ = start_offset; |
| vdex_verifier_deps_offset_ = vdex_size_; |
| size_verifier_deps_alignment_ = start_offset - initial_offset; |
| |
| off_t actual_offset = vdex_out->Seek(start_offset, kSeekSet); |
| if (actual_offset != static_cast<off_t>(start_offset)) { |
| PLOG(ERROR) << "Failed to seek to verifier deps section. Actual: " << actual_offset |
| << " Expected: " << start_offset |
| << " Output: " << vdex_out->GetLocation(); |
| return false; |
| } |
| |
| std::vector<uint8_t> buffer; |
| verifier_deps->Encode(*dex_files_, &buffer); |
| |
| if (!vdex_out->WriteFully(buffer.data(), buffer.size())) { |
| PLOG(ERROR) << "Failed to write verifier deps." |
| << " File: " << vdex_out->GetLocation(); |
| return false; |
| } |
| if (!vdex_out->Flush()) { |
| PLOG(ERROR) << "Failed to flush stream after writing verifier deps." |
| << " File: " << vdex_out->GetLocation(); |
| return false; |
| } |
| |
| size_verifier_deps_ = buffer.size(); |
| vdex_size_ += size_verifier_deps_; |
| return true; |
| } |
| |
| bool OatWriter::WriteCode(OutputStream* out) { |
| CHECK(write_state_ == WriteState::kWriteText); |
| |
| // Wrap out to update checksum with each write. |
| ChecksumUpdatingOutputStream checksum_updating_out(out, oat_header_.get()); |
| out = &checksum_updating_out; |
| |
| SetMultiOatRelativePatcherAdjustment(); |
| |
| const size_t file_offset = oat_data_offset_; |
| size_t relative_offset = oat_header_->GetExecutableOffset(); |
| DCHECK_OFFSET(); |
| |
| relative_offset = WriteCode(out, file_offset, relative_offset); |
| if (relative_offset == 0) { |
| LOG(ERROR) << "Failed to write oat code to " << out->GetLocation(); |
| return false; |
| } |
| |
| relative_offset = WriteCodeDexFiles(out, file_offset, relative_offset); |
| if (relative_offset == 0) { |
| LOG(ERROR) << "Failed to write oat code for dex files to " << out->GetLocation(); |
| return false; |
| } |
| |
| const off_t oat_end_file_offset = out->Seek(0, kSeekCurrent); |
| if (oat_end_file_offset == static_cast<off_t>(-1)) { |
| LOG(ERROR) << "Failed to get oat end file offset in " << out->GetLocation(); |
| return false; |
| } |
| |
| if (kIsDebugBuild) { |
| uint32_t size_total = 0; |
| #define DO_STAT(x) \ |
| VLOG(compiler) << #x "=" << PrettySize(x) << " (" << (x) << "B)"; \ |
| size_total += (x); |
| |
| DO_STAT(size_vdex_header_); |
| DO_STAT(size_vdex_checksums_); |
| DO_STAT(size_dex_file_alignment_); |
| DO_STAT(size_executable_offset_alignment_); |
| DO_STAT(size_oat_header_); |
| DO_STAT(size_oat_header_key_value_store_); |
| DO_STAT(size_dex_file_); |
| DO_STAT(size_verifier_deps_); |
| DO_STAT(size_verifier_deps_alignment_); |
| DO_STAT(size_quickening_info_); |
| DO_STAT(size_quickening_info_alignment_); |
| DO_STAT(size_interpreter_to_interpreter_bridge_); |
| DO_STAT(size_interpreter_to_compiled_code_bridge_); |
| DO_STAT(size_jni_dlsym_lookup_); |
| DO_STAT(size_quick_generic_jni_trampoline_); |
| DO_STAT(size_quick_imt_conflict_trampoline_); |
| DO_STAT(size_quick_resolution_trampoline_); |
| DO_STAT(size_quick_to_interpreter_bridge_); |
| DO_STAT(size_trampoline_alignment_); |
| DO_STAT(size_method_header_); |
| DO_STAT(size_code_); |
| DO_STAT(size_code_alignment_); |
| DO_STAT(size_relative_call_thunks_); |
| DO_STAT(size_misc_thunks_); |
| DO_STAT(size_vmap_table_); |
| DO_STAT(size_method_info_); |
| DO_STAT(size_oat_dex_file_location_size_); |
| DO_STAT(size_oat_dex_file_location_data_); |
| DO_STAT(size_oat_dex_file_location_checksum_); |
| DO_STAT(size_oat_dex_file_offset_); |
| DO_STAT(size_oat_dex_file_class_offsets_offset_); |
| DO_STAT(size_oat_dex_file_lookup_table_offset_); |
| DO_STAT(size_oat_dex_file_dex_layout_sections_offset_); |
| DO_STAT(size_oat_dex_file_dex_layout_sections_); |
| DO_STAT(size_oat_dex_file_dex_layout_sections_alignment_); |
| DO_STAT(size_oat_dex_file_method_bss_mapping_offset_); |
| DO_STAT(size_oat_lookup_table_alignment_); |
| DO_STAT(size_oat_lookup_table_); |
| DO_STAT(size_oat_class_offsets_alignment_); |
| DO_STAT(size_oat_class_offsets_); |
| DO_STAT(size_oat_class_type_); |
| DO_STAT(size_oat_class_status_); |
| DO_STAT(size_oat_class_method_bitmaps_); |
| DO_STAT(size_oat_class_method_offsets_); |
| DO_STAT(size_method_bss_mappings_); |
| #undef DO_STAT |
| |
| VLOG(compiler) << "size_total=" << PrettySize(size_total) << " (" << size_total << "B)"; |
| |
| CHECK_EQ(vdex_size_ + oat_size_, size_total); |
| CHECK_EQ(file_offset + size_total - vdex_size_, static_cast<size_t>(oat_end_file_offset)); |
| } |
| |
| CHECK_EQ(file_offset + oat_size_, static_cast<size_t>(oat_end_file_offset)); |
| CHECK_EQ(oat_size_, relative_offset); |
| |
| write_state_ = WriteState::kWriteHeader; |
| return true; |
| } |
| |
| bool OatWriter::WriteHeader(OutputStream* out, |
| uint32_t image_file_location_oat_checksum, |
| uintptr_t image_file_location_oat_begin, |
| int32_t image_patch_delta) { |
| CHECK(write_state_ == WriteState::kWriteHeader); |
| |
| oat_header_->SetImageFileLocationOatChecksum(image_file_location_oat_checksum); |
| oat_header_->SetImageFileLocationOatDataBegin(image_file_location_oat_begin); |
| if (compiler_driver_->GetCompilerOptions().IsBootImage()) { |
| CHECK_EQ(image_patch_delta, 0); |
| CHECK_EQ(oat_header_->GetImagePatchDelta(), 0); |
| } else { |
| CHECK_ALIGNED(image_patch_delta, kPageSize); |
| oat_header_->SetImagePatchDelta(image_patch_delta); |
| } |
| oat_header_->UpdateChecksumWithHeaderData(); |
| |
| const size_t file_offset = oat_data_offset_; |
| |
| off_t current_offset = out->Seek(0, kSeekCurrent); |
| if (current_offset == static_cast<off_t>(-1)) { |
| PLOG(ERROR) << "Failed to get current offset from " << out->GetLocation(); |
| return false; |
| } |
| if (out->Seek(file_offset, kSeekSet) == static_cast<off_t>(-1)) { |
| PLOG(ERROR) << "Failed to seek to oat header position in " << out->GetLocation(); |
| return false; |
| } |
| DCHECK_EQ(file_offset, static_cast<size_t>(out->Seek(0, kSeekCurrent))); |
| |
| // Flush all other data before writing the header. |
| if (!out->Flush()) { |
| PLOG(ERROR) << "Failed to flush before writing oat header to " << out->GetLocation(); |
| return false; |
| } |
| // Write the header. |
| size_t header_size = oat_header_->GetHeaderSize(); |
| if (!out->WriteFully(oat_header_.get(), header_size)) { |
| PLOG(ERROR) << "Failed to write oat header to " << out->GetLocation(); |
| return false; |
| } |
| // Flush the header data. |
| if (!out->Flush()) { |
| PLOG(ERROR) << "Failed to flush after writing oat header to " << out->GetLocation(); |
| return false; |
| } |
| |
| if (out->Seek(current_offset, kSeekSet) == static_cast<off_t>(-1)) { |
| PLOG(ERROR) << "Failed to seek back after writing oat header to " << out->GetLocation(); |
| return false; |
| } |
| DCHECK_EQ(current_offset, out->Seek(0, kSeekCurrent)); |
| |
| write_state_ = WriteState::kDone; |
| return true; |
| } |
| |
| size_t OatWriter::WriteClassOffsets(OutputStream* out, size_t file_offset, size_t relative_offset) { |
| for (OatDexFile& oat_dex_file : oat_dex_files_) { |
| if (oat_dex_file.class_offsets_offset_ != 0u) { |
| // Class offsets are required to be 4 byte aligned. |
| if (UNLIKELY(!IsAligned<4u>(relative_offset))) { |
| size_t padding_size = RoundUp(relative_offset, 4u) - relative_offset; |
| if (!WriteUpTo16BytesAlignment(out, padding_size, &size_oat_class_offsets_alignment_)) { |
| return 0u; |
| } |
| relative_offset += padding_size; |
| } |
| DCHECK_OFFSET(); |
| if (!oat_dex_file.WriteClassOffsets(this, out)) { |
| return 0u; |
| } |
| relative_offset += oat_dex_file.GetClassOffsetsRawSize(); |
| } |
| } |
| return relative_offset; |
| } |
| |
| size_t OatWriter::WriteClasses(OutputStream* out, size_t file_offset, size_t relative_offset) { |
| const bool may_have_compiled = MayHaveCompiledMethods(); |
| if (may_have_compiled) { |
| CHECK_EQ(oat_class_headers_.size(), oat_classes_.size()); |
| } |
| for (size_t i = 0; i < oat_class_headers_.size(); ++i) { |
| // If there are any classes, the class offsets allocation aligns the offset. |
| DCHECK_ALIGNED(relative_offset, 4u); |
| DCHECK_OFFSET(); |
| if (!oat_class_headers_[i].Write(this, out, oat_data_offset_)) { |
| return 0u; |
| } |
| relative_offset += oat_class_headers_[i].SizeOf(); |
| if (may_have_compiled) { |
| if (!oat_classes_[i].Write(this, out)) { |
| return 0u; |
| } |
| relative_offset += oat_classes_[i].SizeOf(); |
| } |
| } |
| return relative_offset; |
| } |
| |
| size_t OatWriter::WriteMaps(OutputStream* out, size_t file_offset, size_t relative_offset) { |
| { |
| size_t vmap_tables_offset = relative_offset; |
| WriteMapMethodVisitor visitor(this, out, file_offset, relative_offset); |
| if (UNLIKELY(!VisitDexMethods(&visitor))) { |
| return 0; |
| } |
| relative_offset = visitor.GetOffset(); |
| size_vmap_table_ = relative_offset - vmap_tables_offset; |
| } |
| { |
| size_t method_infos_offset = relative_offset; |
| WriteMethodInfoVisitor visitor(this, out, file_offset, relative_offset); |
| if (UNLIKELY(!VisitDexMethods(&visitor))) { |
| return 0; |
| } |
| relative_offset = visitor.GetOffset(); |
| size_method_info_ = relative_offset - method_infos_offset; |
| } |
| |
| return relative_offset; |
| } |
| |
| size_t OatWriter::WriteMethodBssMappings(OutputStream* out, |
| size_t file_offset, |
| size_t relative_offset) { |
| TimingLogger::ScopedTiming split("WriteMethodBssMappings", timings_); |
| |
| for (size_t i = 0, size = dex_files_->size(); i != size; ++i) { |
| const DexFile* dex_file = (*dex_files_)[i]; |
| OatDexFile* oat_dex_file = &oat_dex_files_[i]; |
| auto it = bss_method_entry_references_.find(dex_file); |
| if (it != bss_method_entry_references_.end()) { |
| const BitVector& method_indexes = it->second; |
| // If there are any classes, the class offsets allocation aligns the offset |
| // and we cannot have method bss mappings without class offsets. |
| static_assert(alignof(MethodBssMapping) == sizeof(uint32_t), |
| "MethodBssMapping alignment check."); |
| DCHECK_ALIGNED(relative_offset, sizeof(uint32_t)); |
| |
| MethodBssMappingEncoder encoder( |
| GetInstructionSetPointerSize(oat_header_->GetInstructionSet())); |
| // Allocate a sufficiently large MethodBssMapping. |
| size_t number_of_method_indexes = method_indexes.NumSetBits(); |
| DCHECK_NE(number_of_method_indexes, 0u); |
| size_t max_mappings_size = MethodBssMapping::ComputeSize(number_of_method_indexes); |
| DCHECK_ALIGNED(max_mappings_size, sizeof(uint32_t)); |
| std::unique_ptr<uint32_t[]> storage(new uint32_t[max_mappings_size / sizeof(uint32_t)]); |
| MethodBssMapping* mappings = new(storage.get()) MethodBssMapping(number_of_method_indexes); |
| mappings->ClearPadding(); |
| // Encode the MethodBssMapping. |
| auto init_it = mappings->begin(); |
| bool first_index = true; |
| for (uint32_t method_index : method_indexes.Indexes()) { |
| size_t bss_offset = bss_method_entries_.Get(MethodReference(dex_file, method_index)); |
| if (first_index) { |
| first_index = false; |
| encoder.Reset(method_index, bss_offset); |
| } else if (!encoder.TryMerge(method_index, bss_offset)) { |
| *init_it = encoder.GetEntry(); |
| ++init_it; |
| encoder.Reset(method_index, bss_offset); |
| } |
| } |
| // Store the last entry and shrink the mapping to the actual size. |
| *init_it = encoder.GetEntry(); |
| ++init_it; |
| DCHECK(init_it <= mappings->end()); |
| mappings->SetSize(std::distance(mappings->begin(), init_it)); |
| size_t mappings_size = MethodBssMapping::ComputeSize(mappings->size()); |
| |
| DCHECK_EQ(relative_offset, oat_dex_file->method_bss_mapping_offset_); |
| DCHECK_OFFSET(); |
| if (!out->WriteFully(storage.get(), mappings_size)) { |
| return 0u; |
| } |
| size_method_bss_mappings_ += mappings_size; |
| relative_offset += mappings_size; |
| } else { |
| DCHECK_EQ(0u, oat_dex_file->method_bss_mapping_offset_); |
| } |
| } |
| return relative_offset; |
| } |
| |
| size_t OatWriter::WriteOatDexFiles(OutputStream* out, size_t file_offset, size_t relative_offset) { |
| TimingLogger::ScopedTiming split("WriteOatDexFiles", timings_); |
| |
| for (size_t i = 0, size = oat_dex_files_.size(); i != size; ++i) { |
| OatDexFile* oat_dex_file = &oat_dex_files_[i]; |
| DCHECK_EQ(relative_offset, oat_dex_file->offset_); |
| DCHECK_OFFSET(); |
| |
| // Write OatDexFile. |
| if (!oat_dex_file->Write(this, out)) { |
| return 0u; |
| } |
| relative_offset += oat_dex_file->SizeOf(); |
| } |
| |
| return relative_offset; |
| } |
| |
| size_t OatWriter::WriteCode(OutputStream* out, size_t file_offset, size_t relative_offset) { |
| if (compiler_driver_->GetCompilerOptions().IsBootImage()) { |
| InstructionSet instruction_set = compiler_driver_->GetInstructionSet(); |
| |
| #define DO_TRAMPOLINE(field) \ |
| do { \ |
| uint32_t aligned_offset = CompiledCode::AlignCode(relative_offset, instruction_set); \ |
| uint32_t alignment_padding = aligned_offset - relative_offset; \ |
| out->Seek(alignment_padding, kSeekCurrent); \ |
| size_trampoline_alignment_ += alignment_padding; \ |
| if (!out->WriteFully((field)->data(), (field)->size())) { \ |
| PLOG(ERROR) << "Failed to write " # field " to " << out->GetLocation(); \ |
| return false; \ |
| } \ |
| size_ ## field += (field)->size(); \ |
| relative_offset += alignment_padding + (field)->size(); \ |
| DCHECK_OFFSET(); \ |
| } while (false) |
| |
| DO_TRAMPOLINE(jni_dlsym_lookup_); |
| DO_TRAMPOLINE(quick_generic_jni_trampoline_); |
| DO_TRAMPOLINE(quick_imt_conflict_trampoline_); |
| DO_TRAMPOLINE(quick_resolution_trampoline_); |
| DO_TRAMPOLINE(quick_to_interpreter_bridge_); |
| #undef DO_TRAMPOLINE |
| } |
| return relative_offset; |
| } |
| |
| size_t OatWriter::WriteCodeDexFiles(OutputStream* out, |
| size_t file_offset, |
| size_t relative_offset) { |
| if (!compiler_driver_->GetCompilerOptions().IsAnyCompilationEnabled()) { |
| // As with InitOatCodeDexFiles, also skip the writer if |
| // compilation was disabled. |
| if (kOatWriterDebugOatCodeLayout) { |
| LOG(INFO) << "WriteCodeDexFiles: OatWriter(" |
| << this << "), " |
| << "compilation is disabled"; |
| } |
| |
| return relative_offset; |
| } |
| ScopedObjectAccess soa(Thread::Current()); |
| DCHECK(ordered_methods_ != nullptr); |
| std::unique_ptr<OrderedMethodList> ordered_methods_ptr = |
| std::move(ordered_methods_); |
| WriteCodeMethodVisitor visitor(this, |
| out, |
| file_offset, |
| relative_offset, |
| std::move(*ordered_methods_ptr)); |
| if (UNLIKELY(!visitor.Visit())) { |
| return 0; |
| } |
| relative_offset = visitor.GetOffset(); |
| |
| size_code_alignment_ += relative_patcher_->CodeAlignmentSize(); |
| size_relative_call_thunks_ += relative_patcher_->RelativeCallThunksSize(); |
| size_misc_thunks_ += relative_patcher_->MiscThunksSize(); |
| |
| return relative_offset; |
| } |
| |
| bool OatWriter::RecordOatDataOffset(OutputStream* out) { |
| // Get the elf file offset of the oat file. |
| const off_t raw_file_offset = out->Seek(0, kSeekCurrent); |
| if (raw_file_offset == static_cast<off_t>(-1)) { |
| LOG(ERROR) << "Failed to get file offset in " << out->GetLocation(); |
| return false; |
| } |
| oat_data_offset_ = static_cast<size_t>(raw_file_offset); |
| return true; |
| } |
| |
| bool OatWriter::ReadDexFileHeader(File* file, OatDexFile* oat_dex_file) { |
| // Read the dex file header and perform minimal verification. |
| uint8_t raw_header[sizeof(DexFile::Header)]; |
| if (!file->ReadFully(&raw_header, sizeof(DexFile::Header))) { |
| PLOG(ERROR) << "Failed to read dex file header. Actual: " |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| if (!ValidateDexFileHeader(raw_header, oat_dex_file->GetLocation())) { |
| return false; |
| } |
| |
| const UnalignedDexFileHeader* header = AsUnalignedDexFileHeader(raw_header); |
| oat_dex_file->dex_file_size_ = header->file_size_; |
| oat_dex_file->dex_file_location_checksum_ = header->checksum_; |
| oat_dex_file->class_offsets_.resize(header->class_defs_size_); |
| return true; |
| } |
| |
| bool OatWriter::ValidateDexFileHeader(const uint8_t* raw_header, const char* location) { |
| const bool valid_standard_dex_magic = DexFileLoader::IsMagicValid(raw_header); |
| if (!valid_standard_dex_magic) { |
| LOG(ERROR) << "Invalid magic number in dex file header. " << " File: " << location; |
| return false; |
| } |
| if (!DexFileLoader::IsVersionAndMagicValid(raw_header)) { |
| LOG(ERROR) << "Invalid version number in dex file header. " << " File: " << location; |
| return false; |
| } |
| const UnalignedDexFileHeader* header = AsUnalignedDexFileHeader(raw_header); |
| if (header->file_size_ < sizeof(DexFile::Header)) { |
| LOG(ERROR) << "Dex file header specifies file size insufficient to contain the header." |
| << " File: " << location; |
| return false; |
| } |
| return true; |
| } |
| |
| bool OatWriter::WriteDexFiles(OutputStream* out, File* file, bool update_input_vdex) { |
| TimingLogger::ScopedTiming split("Write Dex files", timings_); |
| |
| vdex_dex_files_offset_ = vdex_size_; |
| |
| // Write dex files. |
| for (OatDexFile& oat_dex_file : oat_dex_files_) { |
| if (!WriteDexFile(out, file, &oat_dex_file, update_input_vdex)) { |
| return false; |
| } |
| } |
| |
| CloseSources(); |
| return true; |
| } |
| |
| void OatWriter::CloseSources() { |
| for (OatDexFile& oat_dex_file : oat_dex_files_) { |
| oat_dex_file.source_.Clear(); // Get rid of the reference, it's about to be invalidated. |
| } |
| zipped_dex_files_.clear(); |
| zip_archives_.clear(); |
| raw_dex_files_.clear(); |
| } |
| |
| bool OatWriter::WriteDexFile(OutputStream* out, |
| File* file, |
| OatDexFile* oat_dex_file, |
| bool update_input_vdex) { |
| if (!SeekToDexFile(out, file, oat_dex_file)) { |
| return false; |
| } |
| if (profile_compilation_info_ != nullptr || |
| compact_dex_level_ != CompactDexLevel::kCompactDexLevelNone) { |
| CHECK(!update_input_vdex) << "We should never update the input vdex when doing dexlayout"; |
| if (!LayoutAndWriteDexFile(out, oat_dex_file)) { |
| return false; |
| } |
| } else if (oat_dex_file->source_.IsZipEntry()) { |
| DCHECK(!update_input_vdex); |
| if (!WriteDexFile(out, file, oat_dex_file, oat_dex_file->source_.GetZipEntry())) { |
| return false; |
| } |
| } else if (oat_dex_file->source_.IsRawFile()) { |
| DCHECK(!update_input_vdex); |
| if (!WriteDexFile(out, file, oat_dex_file, oat_dex_file->source_.GetRawFile())) { |
| return false; |
| } |
| } else { |
| DCHECK(oat_dex_file->source_.IsRawData()); |
| if (!WriteDexFile(out, oat_dex_file, oat_dex_file->source_.GetRawData(), update_input_vdex)) { |
| return false; |
| } |
| } |
| |
| // Update current size and account for the written data. |
| if (kIsVdexEnabled) { |
| DCHECK_EQ(vdex_size_, oat_dex_file->dex_file_offset_); |
| vdex_size_ += oat_dex_file->dex_file_size_; |
| } else { |
| DCHECK(!update_input_vdex); |
| DCHECK_EQ(oat_size_, oat_dex_file->dex_file_offset_); |
| oat_size_ += oat_dex_file->dex_file_size_; |
| } |
| size_dex_file_ += oat_dex_file->dex_file_size_; |
| return true; |
| } |
| |
| bool OatWriter::SeekToDexFile(OutputStream* out, File* file, OatDexFile* oat_dex_file) { |
| // Dex files are required to be 4 byte aligned. |
| size_t initial_offset = kIsVdexEnabled ? vdex_size_ : oat_size_; |
| size_t start_offset = RoundUp(initial_offset, 4); |
| size_t file_offset = kIsVdexEnabled ? start_offset : (oat_data_offset_ + start_offset); |
| size_dex_file_alignment_ += start_offset - initial_offset; |
| |
| // Seek to the start of the dex file and flush any pending operations in the stream. |
| // Verify that, after flushing the stream, the file is at the same offset as the stream. |
| off_t actual_offset = out->Seek(file_offset, kSeekSet); |
| if (actual_offset != static_cast<off_t>(file_offset)) { |
| PLOG(ERROR) << "Failed to seek to dex file section. Actual: " << actual_offset |
| << " Expected: " << file_offset |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| if (!out->Flush()) { |
| PLOG(ERROR) << "Failed to flush before writing dex file." |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| actual_offset = lseek(file->Fd(), 0, SEEK_CUR); |
| if (actual_offset != static_cast<off_t>(file_offset)) { |
| PLOG(ERROR) << "Stream/file position mismatch! Actual: " << actual_offset |
| << " Expected: " << file_offset |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| |
| if (kIsVdexEnabled) { |
| vdex_size_ = start_offset; |
| } else { |
| oat_size_ = start_offset; |
| } |
| oat_dex_file->dex_file_offset_ = start_offset; |
| return true; |
| } |
| |
| bool OatWriter::LayoutAndWriteDexFile(OutputStream* out, OatDexFile* oat_dex_file) { |
| TimingLogger::ScopedTiming split("Dex Layout", timings_); |
| std::string error_msg; |
| std::string location(oat_dex_file->GetLocation()); |
| std::unique_ptr<const DexFile> dex_file; |
| if (oat_dex_file->source_.IsZipEntry()) { |
| ZipEntry* zip_entry = oat_dex_file->source_.GetZipEntry(); |
| std::unique_ptr<MemMap> mem_map( |
| zip_entry->ExtractToMemMap(location.c_str(), "classes.dex", &error_msg)); |
| if (mem_map == nullptr) { |
| LOG(ERROR) << "Failed to extract dex file to mem map for layout: " << error_msg; |
| return false; |
| } |
| dex_file = DexFileLoader::Open(location, |
| zip_entry->GetCrc32(), |
| std::move(mem_map), |
| /* verify */ true, |
| /* verify_checksum */ true, |
| &error_msg); |
| } else if (oat_dex_file->source_.IsRawFile()) { |
| File* raw_file = oat_dex_file->source_.GetRawFile(); |
| int dup_fd = dup(raw_file->Fd()); |
| if (dup_fd < 0) { |
| PLOG(ERROR) << "Failed to dup dex file descriptor (" << raw_file->Fd() << ") at " << location; |
| return false; |
| } |
| dex_file = DexFileLoader::OpenDex( |
| dup_fd, location, /* verify */ true, /* verify_checksum */ true, &error_msg); |
| } else { |
| // The source data is a vdex file. |
| CHECK(oat_dex_file->source_.IsRawData()) |
| << static_cast<size_t>(oat_dex_file->source_.GetType()); |
| const uint8_t* raw_dex_file = oat_dex_file->source_.GetRawData(); |
| // Note: The raw data has already been checked to contain the header |
| // and all the data that the header specifies as the file size. |
| DCHECK(raw_dex_file != nullptr); |
| DCHECK(ValidateDexFileHeader(raw_dex_file, oat_dex_file->GetLocation())); |
| const UnalignedDexFileHeader* header = AsUnalignedDexFileHeader(raw_dex_file); |
| // Since the source may have had its layout changed, or may be quickened, don't verify it. |
| dex_file = DexFileLoader::Open(raw_dex_file, |
| header->file_size_, |
| location, |
| oat_dex_file->dex_file_location_checksum_, |
| nullptr, |
| /* verify */ false, |
| /* verify_checksum */ false, |
| &error_msg); |
| } |
| if (dex_file == nullptr) { |
| LOG(ERROR) << "Failed to open dex file for layout: " << error_msg; |
| return false; |
| } |
| Options options; |
| options.output_to_memmap_ = true; |
| options.compact_dex_level_ = compact_dex_level_; |
| DexLayout dex_layout(options, profile_compilation_info_, nullptr); |
| dex_layout.ProcessDexFile(location.c_str(), dex_file.get(), 0); |
| std::unique_ptr<MemMap> mem_map(dex_layout.GetAndReleaseMemMap()); |
| if (!WriteDexFile(out, oat_dex_file, mem_map->Begin(), /* update_input_vdex */ false)) { |
| return false; |
| } |
| oat_dex_file->dex_sections_layout_ = dex_layout.GetSections(); |
| // Set the checksum of the new oat dex file to be the original file's checksum. |
| oat_dex_file->dex_file_location_checksum_ = dex_file->GetLocationChecksum(); |
| return true; |
| } |
| |
| bool OatWriter::WriteDexFile(OutputStream* out, |
| File* file, |
| OatDexFile* oat_dex_file, |
| ZipEntry* dex_file) { |
| size_t start_offset = kIsVdexEnabled ? vdex_size_ : oat_data_offset_ + oat_size_; |
| DCHECK_EQ(static_cast<off_t>(start_offset), out->Seek(0, kSeekCurrent)); |
| |
| // Extract the dex file and get the extracted size. |
| std::string error_msg; |
| if (!dex_file->ExtractToFile(*file, &error_msg)) { |
| LOG(ERROR) << "Failed to extract dex file from ZIP entry: " << error_msg |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| if (file->Flush() != 0) { |
| PLOG(ERROR) << "Failed to flush dex file from ZIP entry." |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| off_t extracted_end = lseek(file->Fd(), 0, SEEK_CUR); |
| if (extracted_end == static_cast<off_t>(-1)) { |
| PLOG(ERROR) << "Failed get end offset after writing dex file from ZIP entry." |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| if (extracted_end < static_cast<off_t>(start_offset)) { |
| LOG(ERROR) << "Dex file end position is before start position! End: " << extracted_end |
| << " Start: " << start_offset |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| uint64_t extracted_size = static_cast<uint64_t>(extracted_end - start_offset); |
| if (extracted_size < sizeof(DexFile::Header)) { |
| LOG(ERROR) << "Extracted dex file is shorter than dex file header. size: " |
| << extracted_size << " File: " << oat_dex_file->GetLocation(); |
| return false; |
| } |
| |
| // Read the dex file header and extract required data to OatDexFile. |
| off_t actual_offset = lseek(file->Fd(), start_offset, SEEK_SET); |
| if (actual_offset != static_cast<off_t>(start_offset)) { |
| PLOG(ERROR) << "Failed to seek back to dex file header. Actual: " << actual_offset |
| << " Expected: " << start_offset |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| if (!ReadDexFileHeader(file, oat_dex_file)) { |
| return false; |
| } |
| if (extracted_size < oat_dex_file->dex_file_size_) { |
| LOG(ERROR) << "Extracted truncated dex file. Extracted size: " << extracted_size |
| << " file size from header: " << oat_dex_file->dex_file_size_ |
| << " File: " << oat_dex_file->GetLocation(); |
| return false; |
| } |
| |
| // Override the checksum from header with the CRC from ZIP entry. |
| oat_dex_file->dex_file_location_checksum_ = dex_file->GetCrc32(); |
| |
| // Seek both file and stream to the end offset. |
| size_t end_offset = start_offset + oat_dex_file->dex_file_size_; |
| actual_offset = lseek(file->Fd(), end_offset, SEEK_SET); |
| if (actual_offset != static_cast<off_t>(end_offset)) { |
| PLOG(ERROR) << "Failed to seek to end of dex file. Actual: " << actual_offset |
| << " Expected: " << end_offset |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| actual_offset = out->Seek(end_offset, kSeekSet); |
| if (actual_offset != static_cast<off_t>(end_offset)) { |
| PLOG(ERROR) << "Failed to seek stream to end of dex file. Actual: " << actual_offset |
| << " Expected: " << end_offset << " File: " << oat_dex_file->GetLocation(); |
| return false; |
| } |
| if (!out->Flush()) { |
| PLOG(ERROR) << "Failed to flush stream after seeking over dex file." |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| |
| // If we extracted more than the size specified in the header, truncate the file. |
| if (extracted_size > oat_dex_file->dex_file_size_) { |
| if (file->SetLength(end_offset) != 0) { |
| PLOG(ERROR) << "Failed to truncate excessive dex file length." |
| << " File: " << oat_dex_file->GetLocation() |
| << " Output: " << file->GetPath(); |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| bool OatWriter::WriteDexFile(OutputStream* out, |
| File* file, |
| OatDexFile* oat_dex_file, |
| File* dex_file) { |
| size_t start_offset = kIsVdexEnabled ? vdex_size_ : oat_data_offset_ + oat_size_; |
| DCHECK_EQ(static_cast<off_t>(start_offset), out->Seek(0, kSeekCurrent)); |
| |
| off_t input_offset = lseek(dex_file->Fd(), 0, SEEK_SET); |
| if (input_offset != static_cast<off_t>(0)) { |
| PLOG(ERROR) << "Failed to seek to dex file header. Actual: " << input_offset |
| << " Expected: 0" |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| if (!ReadDexFileHeader(dex_file, oat_dex_file)) { |
| return false; |
| } |
| |
| // Copy the input dex file using sendfile(). |
| if (!file->Copy(dex_file, 0, oat_dex_file->dex_file_size_)) { |
| PLOG(ERROR) << "Failed to copy dex file to oat file." |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| if (file->Flush() != 0) { |
| PLOG(ERROR) << "Failed to flush dex file." |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| |
| // Check file position and seek the stream to the end offset. |
| size_t end_offset = start_offset + oat_dex_file->dex_file_size_; |
| off_t actual_offset = lseek(file->Fd(), 0, SEEK_CUR); |
| if (actual_offset != static_cast<off_t>(end_offset)) { |
| PLOG(ERROR) << "Unexpected file position after copying dex file. Actual: " << actual_offset |
| << " Expected: " << end_offset |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| actual_offset = out->Seek(end_offset, kSeekSet); |
| if (actual_offset != static_cast<off_t>(end_offset)) { |
| PLOG(ERROR) << "Failed to seek stream to end of dex file. Actual: " << actual_offset |
| << " Expected: " << end_offset << " File: " << oat_dex_file->GetLocation(); |
| return false; |
| } |
| if (!out->Flush()) { |
| PLOG(ERROR) << "Failed to flush stream after seeking over dex file." |
| << " File: " << oat_dex_file->GetLocation() << " Output: " << file->GetPath(); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool OatWriter::WriteDexFile(OutputStream* out, |
| OatDexFile* oat_dex_file, |
| const uint8_t* dex_file, |
| bool update_input_vdex) { |
| // Note: The raw data has already been checked to contain the header |
| // and all the data that the header specifies as the file size. |
| DCHECK(dex_file != nullptr); |
| DCHECK(ValidateDexFileHeader(dex_file, oat_dex_file->GetLocation())); |
| const UnalignedDexFileHeader* header = AsUnalignedDexFileHeader(dex_file); |
| |
| if (update_input_vdex) { |
| // The vdex already contains the dex code, no need to write it again. |
| } else { |
| if (!out->WriteFully(dex_file, header->file_size_)) { |
| PLOG(ERROR) << "Failed to write dex file " << oat_dex_file->GetLocation() |
| << " to " << out->GetLocation(); |
| return false; |
| } |
| if (!out->Flush()) { |
| PLOG(ERROR) << "Failed to flush stream after writing dex file." |
| << " File: " << oat_dex_file->GetLocation(); |
| return false; |
| } |
| } |
| |
| // Update dex file size and resize class offsets in the OatDexFile. |
| // Note: For raw data, the checksum is passed directly to AddRawDexFileSource(). |
| // Note: For vdex, the checksum is copied from the existing vdex file. |
| oat_dex_file->dex_file_size_ = header->file_size_; |
| oat_dex_file->class_offsets_.resize(header->class_defs_size_); |
| return true; |
| } |
| |
| bool OatWriter::OpenDexFiles( |
| File* file, |
| bool verify, |
| /*out*/ std::unique_ptr<MemMap>* opened_dex_files_map, |
| /*out*/ std::vector<std::unique_ptr<const DexFile>>* opened_dex_files) { |
| TimingLogger::ScopedTiming split("OpenDexFiles", timings_); |
| |
| if (oat_dex_files_.empty()) { |
| // Nothing to do. |
| return true; |
| } |
| |
| size_t map_offset = oat_dex_files_[0].dex_file_offset_; |
| size_t length = kIsVdexEnabled ? (vdex_size_ - map_offset) : (oat_size_ - map_offset); |
| |
| std::string error_msg; |
| std::unique_ptr<MemMap> dex_files_map(MemMap::MapFile( |
| length, |
| PROT_READ | PROT_WRITE, |
| MAP_SHARED, |
| file->Fd(), |
| kIsVdexEnabled ? map_offset : (oat_data_offset_ + map_offset), |
| /* low_4gb */ false, |
| file->GetPath().c_str(), |
| &error_msg)); |
| if (dex_files_map == nullptr) { |
| LOG(ERROR) << "Failed to mmap() dex files from oat file. File: " << file->GetPath() |
| << " error: " << error_msg; |
| return false; |
| } |
| std::vector<std::unique_ptr<const DexFile>> dex_files; |
| for (OatDexFile& oat_dex_file : oat_dex_files_) { |
| // Make sure no one messed with input files while we were copying data. |
| // At the very least we need consistent file size and number of class definitions. |
| const uint8_t* raw_dex_file = |
| dex_files_map->Begin() + oat_dex_file.dex_file_offset_ - map_offset; |
| if (!ValidateDexFileHeader(raw_dex_file, oat_dex_file.GetLocation())) { |
| // Note: ValidateDexFileHeader() already logged an error message. |
| LOG(ERROR) << "Failed to verify written dex file header!" |
| << " Output: " << file->GetPath() << " ~ " << std::hex << map_offset |
| << " ~ " << static_cast<const void*>(raw_dex_file); |
| return false; |
| } |
| const UnalignedDexFileHeader* header = AsUnalignedDexFileHeader(raw_dex_file); |
| if (header->file_size_ != oat_dex_file.dex_file_size_) { |
| LOG(ERROR) << "File size mismatch in written dex file header! Expected: " |
| << oat_dex_file.dex_file_size_ << " Actual: " << header->file_size_ |
| << " Output: " << file->GetPath(); |
| return false; |
| } |
| if (header->class_defs_size_ != oat_dex_file.class_offsets_.size()) { |
| LOG(ERROR) << "Class defs size mismatch in written dex file header! Expected: " |
| << oat_dex_file.class_offsets_.size() << " Actual: " << header->class_defs_size_ |
| << " Output: " << file->GetPath(); |
| return false; |
| } |
| |
| // Now, open the dex file. |
| dex_files.emplace_back(DexFileLoader::Open(raw_dex_file, |
| oat_dex_file.dex_file_size_, |
| oat_dex_file.GetLocation(), |
| oat_dex_file.dex_file_location_checksum_, |
| /* oat_dex_file */ nullptr, |
| verify, |
| verify, |
| &error_msg)); |
| if (dex_files.back() == nullptr) { |
| LOG(ERROR) << "Failed to open dex file from oat file. File: " << oat_dex_file.GetLocation() |
| << " Error: " << error_msg; |
| return false; |
| } |
| } |
| |
| *opened_dex_files_map = std::move(dex_files_map); |
| *opened_dex_files = std::move(dex_files); |
| return true; |
| } |
| |
| bool OatWriter::WriteTypeLookupTables( |
| OutputStream* oat_rodata, |
| const std::vector<std::unique_ptr<const DexFile>>& opened_dex_files) { |
| TimingLogger::ScopedTiming split("WriteTypeLookupTables", timings_); |
| |
| uint32_t expected_offset = oat_data_offset_ + oat_size_; |
| off_t actual_offset = oat_rodata->Seek(expected_offset, kSeekSet); |
| if (static_cast<uint32_t>(actual_offset) != expected_offset) { |
| PLOG(ERROR) << "Failed to seek to TypeLookupTable section. Actual: " << actual_offset |
| << " Expected: " << expected_offset << " File: " << oat_rodata->GetLocation(); |
| return false; |
| } |
| |
| DCHECK_EQ(opened_dex_files.size(), oat_dex_files_.size()); |
| for (size_t i = 0, size = opened_dex_files.size(); i != size; ++i) { |
| OatDexFile* oat_dex_file = &oat_dex_files_[i]; |
| DCHECK_EQ(oat_dex_file->lookup_table_offset_, 0u); |
| |
| if (oat_dex_file->create_type_lookup_table_ != CreateTypeLookupTable::kCreate || |
| oat_dex_file->class_offsets_.empty()) { |
| continue; |
| } |
| |
| size_t table_size = TypeLookupTable::RawDataLength(oat_dex_file->class_offsets_.size()); |
| if (table_size == 0u) { |
| continue; |
| } |
| |
| // Create the lookup table. When `nullptr` is given as the storage buffer, |
| // TypeLookupTable allocates its own and OatDexFile takes ownership. |
| const DexFile& dex_file = *opened_dex_files[i]; |
| { |
| std::unique_ptr<TypeLookupTable> type_lookup_table = |
| TypeLookupTable::Create(dex_file, /* storage */ nullptr); |
| type_lookup_table_oat_dex_files_.push_back( |
| std::make_unique<art::OatDexFile>(std::move(type_lookup_table))); |
| dex_file.SetOatDexFile(type_lookup_table_oat_dex_files_.back().get()); |
| } |
| TypeLookupTable* const table = type_lookup_table_oat_dex_files_.back()->GetTypeLookupTable(); |
| |
| // Type tables are required to be 4 byte aligned. |
| size_t initial_offset = oat_size_; |
| size_t rodata_offset = RoundUp(initial_offset, 4); |
| size_t padding_size = rodata_offset - initial_offset; |
| |
| if (padding_size != 0u) { |
| std::vector<uint8_t> buffer(padding_size, 0u); |
| if (!oat_rodata->WriteFully(buffer.data(), padding_size)) { |
| PLOG(ERROR) << "Failed to write lookup table alignment padding." |
| << " File: " << oat_dex_file->GetLocation() |
| << " Output: " << oat_rodata->GetLocation(); |
| return false; |
| } |
| } |
| |
| DCHECK_EQ(oat_data_offset_ + rodata_offset, |
| static_cast<size_t>(oat_rodata->Seek(0u, kSeekCurrent))); |
| DCHECK_EQ(table_size, table->RawDataLength()); |
| |
| if (!oat_rodata->WriteFully(table->RawData(), table_size)) { |
| PLOG(ERROR) << "Failed to write lookup table." |
| << " File: " << oat_dex_file->GetLocation() |
| << " Output: " << oat_rodata->GetLocation(); |
| return false; |
| } |
| |
| oat_dex_file->lookup_table_offset_ = rodata_offset; |
| |
| oat_size_ += padding_size + table_size; |
| size_oat_lookup_table_ += table_size; |
| size_oat_lookup_table_alignment_ += padding_size; |
| } |
| |
| if (!oat_rodata->Flush()) { |
| PLOG(ERROR) << "Failed to flush stream after writing type lookup tables." |
| << " File: " << oat_rodata->GetLocation(); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool OatWriter::WriteDexLayoutSections( |
| OutputStream* oat_rodata, |
| const std::vector<std::unique_ptr<const DexFile>>& opened_dex_files) { |
| TimingLogger::ScopedTiming split(__FUNCTION__, timings_); |
| |
| if (!kWriteDexLayoutInfo) { |
| return true;; |
| } |
| |
| uint32_t expected_offset = oat_data_offset_ + oat_size_; |
| off_t actual_offset = oat_rodata->Seek(expected_offset, kSeekSet); |
| if (static_cast<uint32_t>(actual_offset) != expected_offset) { |
| PLOG(ERROR) << "Failed to seek to dex layout section offset section. Actual: " << actual_offset |
| << " Expected: " << expected_offset << " File: " << oat_rodata->GetLocation(); |
| return false; |
| } |
| |
| DCHECK_EQ(opened_dex_files.size(), oat_dex_files_.size()); |
| size_t rodata_offset = oat_size_; |
| for (size_t i = 0, size = opened_dex_files.size(); i != size; ++i) { |
| OatDexFile* oat_dex_file = &oat_dex_files_[i]; |
| DCHECK_EQ(oat_dex_file->dex_sections_layout_offset_, 0u); |
| |
| // Write dex layout section alignment bytes. |
| const size_t padding_size = |
| RoundUp(rodata_offset, alignof(DexLayoutSections)) - rodata_offset; |
| if (padding_size != 0u) { |
| std::vector<uint8_t> buffer(padding_size, 0u); |
| if (!oat_rodata->WriteFully(buffer.data(), padding_size)) { |
| PLOG(ERROR) << "Failed to write lookup table alignment padding." |
| << " File: " << oat_dex_file->GetLocation() |
| << " Output: " << oat_rodata->GetLocation(); |
| return false; |
| } |
| size_oat_dex_file_dex_layout_sections_alignment_ += padding_size; |
| rodata_offset += padding_size; |
| } |
| |
| DCHECK_ALIGNED(rodata_offset, alignof(DexLayoutSections)); |
| DCHECK_EQ(oat_data_offset_ + rodata_offset, |
| static_cast<size_t>(oat_rodata->Seek(0u, kSeekCurrent))); |
| DCHECK(oat_dex_file != nullptr); |
| if (!oat_rodata->WriteFully(&oat_dex_file->dex_sections_layout_, |
| sizeof(oat_dex_file->dex_sections_layout_))) { |
| PLOG(ERROR) << "Failed to write dex layout sections." |
| << " File: " << oat_dex_file->GetLocation() |
| << " Output: " << oat_rodata->GetLocation(); |
| return false; |
| } |
| oat_dex_file->dex_sections_layout_offset_ = rodata_offset; |
| size_oat_dex_file_dex_layout_sections_ += sizeof(oat_dex_file->dex_sections_layout_); |
| rodata_offset += sizeof(oat_dex_file->dex_sections_layout_); |
| } |
| oat_size_ = rodata_offset; |
| |
| if (!oat_rodata->Flush()) { |
| PLOG(ERROR) << "Failed to flush stream after writing type dex layout sections." |
| << " File: " << oat_rodata->GetLocation(); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool OatWriter::WriteChecksumsAndVdexHeader(OutputStream* vdex_out) { |
| if (!kIsVdexEnabled) { |
| return true; |
| } |
| // Write checksums |
| off_t actual_offset = vdex_out->Seek(sizeof(VdexFile::Header), kSeekSet); |
| if (actual_offset != sizeof(VdexFile::Header)) { |
| PLOG(ERROR) << "Failed to seek to the checksum location of vdex file. Actual: " << actual_offset |
| << " File: " << vdex_out->GetLocation(); |
| return false; |
| } |
| |
| for (size_t i = 0, size = oat_dex_files_.size(); i != size; ++i) { |
| OatDexFile* oat_dex_file = &oat_dex_files_[i]; |
| if (!vdex_out->WriteFully( |
| &oat_dex_file->dex_file_location_checksum_, sizeof(VdexFile::VdexChecksum))) { |
| PLOG(ERROR) << "Failed to write dex file location checksum. File: " |
| << vdex_out->GetLocation(); |
| return false; |
| } |
| size_vdex_checksums_ += sizeof(VdexFile::VdexChecksum); |
| } |
| |
| // Write header. |
| actual_offset = vdex_out->Seek(0, kSeekSet); |
| if (actual_offset != 0) { |
| PLOG(ERROR) << "Failed to seek to the beginning of vdex file. Actual: " << actual_offset |
| << " File: " << vdex_out->GetLocation(); |
| return false; |
| } |
| |
| DCHECK_NE(vdex_dex_files_offset_, 0u); |
| DCHECK_NE(vdex_verifier_deps_offset_, 0u); |
| |
| size_t dex_section_size = vdex_verifier_deps_offset_ - vdex_dex_files_offset_; |
| size_t verifier_deps_section_size = vdex_quickening_info_offset_ - vdex_verifier_deps_offset_; |
| size_t quickening_info_section_size = vdex_size_ - vdex_quickening_info_offset_; |
| |
| VdexFile::Header vdex_header(oat_dex_files_.size(), |
| dex_section_size, |
| verifier_deps_section_size, |
| quickening_info_section_size); |
| if (!vdex_out->WriteFully(&vdex_header, sizeof(VdexFile::Header))) { |
| PLOG(ERROR) << "Failed to write vdex header. File: " << vdex_out->GetLocation(); |
| return false; |
| } |
| size_vdex_header_ = sizeof(VdexFile::Header); |
| |
| if (!vdex_out->Flush()) { |
| PLOG(ERROR) << "Failed to flush stream after writing to vdex file." |
| << " File: " << vdex_out->GetLocation(); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool OatWriter::WriteCodeAlignment(OutputStream* out, uint32_t aligned_code_delta) { |
| return WriteUpTo16BytesAlignment(out, aligned_code_delta, &size_code_alignment_); |
| } |
| |
| bool OatWriter::WriteUpTo16BytesAlignment(OutputStream* out, uint32_t size, uint32_t* stat) { |
| static const uint8_t kPadding[] = { |
| 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u |
| }; |
| DCHECK_LE(size, sizeof(kPadding)); |
| if (UNLIKELY(!out->WriteFully(kPadding, size))) { |
| return false; |
| } |
| *stat += size; |
| return true; |
| } |
| |
| void OatWriter::SetMultiOatRelativePatcherAdjustment() { |
| DCHECK(dex_files_ != nullptr); |
| DCHECK(relative_patcher_ != nullptr); |
| DCHECK_NE(oat_data_offset_, 0u); |
| if (image_writer_ != nullptr && !dex_files_->empty()) { |
| // The oat data begin may not be initialized yet but the oat file offset is ready. |
| size_t oat_index = image_writer_->GetOatIndexForDexFile(dex_files_->front()); |
| size_t elf_file_offset = image_writer_->GetOatFileOffset(oat_index); |
| relative_patcher_->StartOatFile(elf_file_offset + oat_data_offset_); |
| } |
| } |
| |
| OatWriter::OatDexFile::OatDexFile(const char* dex_file_location, |
| DexFileSource source, |
| CreateTypeLookupTable create_type_lookup_table) |
| : source_(source), |
| create_type_lookup_table_(create_type_lookup_table), |
| dex_file_size_(0), |
| offset_(0), |
| dex_file_location_size_(strlen(dex_file_location)), |
| dex_file_location_data_(dex_file_location), |
| dex_file_location_checksum_(0u), |
| dex_file_offset_(0u), |
| class_offsets_offset_(0u), |
| lookup_table_offset_(0u), |
| method_bss_mapping_offset_(0u), |
| dex_sections_layout_offset_(0u), |
| class_offsets_() { |
| } |
| |
| size_t OatWriter::OatDexFile::SizeOf() const { |
| return sizeof(dex_file_location_size_) |
| + dex_file_location_size_ |
| + sizeof(dex_file_location_checksum_) |
| + sizeof(dex_file_offset_) |
| + sizeof(class_offsets_offset_) |
| + sizeof(lookup_table_offset_) |
| + sizeof(method_bss_mapping_offset_) |
| + sizeof(dex_sections_layout_offset_); |
| } |
| |
| bool OatWriter::OatDexFile::Write(OatWriter* oat_writer, OutputStream* out) const { |
| const size_t file_offset = oat_writer->oat_data_offset_; |
| DCHECK_OFFSET_(); |
| |
| if (!out->WriteFully(&dex_file_location_size_, sizeof(dex_file_location_size_))) { |
| PLOG(ERROR) << "Failed to write dex file location length to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_dex_file_location_size_ += sizeof(dex_file_location_size_); |
| |
| if (!out->WriteFully(dex_file_location_data_, dex_file_location_size_)) { |
| PLOG(ERROR) << "Failed to write dex file location data to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_dex_file_location_data_ += dex_file_location_size_; |
| |
| if (!out->WriteFully(&dex_file_location_checksum_, sizeof(dex_file_location_checksum_))) { |
| PLOG(ERROR) << "Failed to write dex file location checksum to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_dex_file_location_checksum_ += sizeof(dex_file_location_checksum_); |
| |
| if (!out->WriteFully(&dex_file_offset_, sizeof(dex_file_offset_))) { |
| PLOG(ERROR) << "Failed to write dex file offset to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_dex_file_offset_ += sizeof(dex_file_offset_); |
| |
| if (!out->WriteFully(&class_offsets_offset_, sizeof(class_offsets_offset_))) { |
| PLOG(ERROR) << "Failed to write class offsets offset to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_dex_file_class_offsets_offset_ += sizeof(class_offsets_offset_); |
| |
| if (!out->WriteFully(&lookup_table_offset_, sizeof(lookup_table_offset_))) { |
| PLOG(ERROR) << "Failed to write lookup table offset to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_dex_file_lookup_table_offset_ += sizeof(lookup_table_offset_); |
| |
| if (!out->WriteFully(&dex_sections_layout_offset_, sizeof(dex_sections_layout_offset_))) { |
| PLOG(ERROR) << "Failed to write dex section layout info to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_dex_file_dex_layout_sections_offset_ += sizeof(dex_sections_layout_offset_); |
| |
| if (!out->WriteFully(&method_bss_mapping_offset_, sizeof(method_bss_mapping_offset_))) { |
| PLOG(ERROR) << "Failed to write method bss mapping offset to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_dex_file_method_bss_mapping_offset_ += sizeof(method_bss_mapping_offset_); |
| |
| return true; |
| } |
| |
| bool OatWriter::OatDexFile::WriteClassOffsets(OatWriter* oat_writer, OutputStream* out) { |
| if (!out->WriteFully(class_offsets_.data(), GetClassOffsetsRawSize())) { |
| PLOG(ERROR) << "Failed to write oat class offsets for " << GetLocation() |
| << " to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_class_offsets_ += GetClassOffsetsRawSize(); |
| return true; |
| } |
| |
| OatWriter::OatClass::OatClass(const dchecked_vector<CompiledMethod*>& compiled_methods, |
| uint32_t compiled_methods_with_code, |
| uint16_t oat_class_type) |
| : compiled_methods_(compiled_methods) { |
| const uint32_t num_methods = compiled_methods.size(); |
| CHECK_LE(compiled_methods_with_code, num_methods); |
| |
| oat_method_offsets_offsets_from_oat_class_.resize(num_methods); |
| |
| method_offsets_.resize(compiled_methods_with_code); |
| method_headers_.resize(compiled_methods_with_code); |
| |
| uint32_t oat_method_offsets_offset_from_oat_class = OatClassHeader::SizeOf(); |
| // We only create this instance if there are at least some compiled. |
| if (oat_class_type == kOatClassSomeCompiled) { |
| method_bitmap_.reset(new BitVector(num_methods, false, Allocator::GetMallocAllocator())); |
| method_bitmap_size_ = method_bitmap_->GetSizeOf(); |
| oat_method_offsets_offset_from_oat_class += sizeof(method_bitmap_size_); |
| oat_method_offsets_offset_from_oat_class += method_bitmap_size_; |
| } else { |
| method_bitmap_ = nullptr; |
| method_bitmap_size_ = 0; |
| } |
| |
| for (size_t i = 0; i < num_methods; i++) { |
| CompiledMethod* compiled_method = compiled_methods_[i]; |
| if (HasCompiledCode(compiled_method)) { |
| oat_method_offsets_offsets_from_oat_class_[i] = oat_method_offsets_offset_from_oat_class; |
| oat_method_offsets_offset_from_oat_class += sizeof(OatMethodOffsets); |
| if (oat_class_type == kOatClassSomeCompiled) { |
| method_bitmap_->SetBit(i); |
| } |
| } else { |
| oat_method_offsets_offsets_from_oat_class_[i] = 0; |
| } |
| } |
| } |
| |
| size_t OatWriter::OatClass::SizeOf() const { |
| return ((method_bitmap_size_ == 0) ? 0 : sizeof(method_bitmap_size_)) |
| + method_bitmap_size_ |
| + (sizeof(method_offsets_[0]) * method_offsets_.size()); |
| } |
| |
| bool OatWriter::OatClassHeader::Write(OatWriter* oat_writer, |
| OutputStream* out, |
| const size_t file_offset) const { |
| DCHECK_OFFSET_(); |
| if (!out->WriteFully(&status_, sizeof(status_))) { |
| PLOG(ERROR) << "Failed to write class status to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_class_status_ += sizeof(status_); |
| |
| if (!out->WriteFully(&type_, sizeof(type_))) { |
| PLOG(ERROR) << "Failed to write oat class type to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_class_type_ += sizeof(type_); |
| return true; |
| } |
| |
| bool OatWriter::OatClass::Write(OatWriter* oat_writer, OutputStream* out) const { |
| if (method_bitmap_size_ != 0) { |
| if (!out->WriteFully(&method_bitmap_size_, sizeof(method_bitmap_size_))) { |
| PLOG(ERROR) << "Failed to write method bitmap size to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_class_method_bitmaps_ += sizeof(method_bitmap_size_); |
| |
| if (!out->WriteFully(method_bitmap_->GetRawStorage(), method_bitmap_size_)) { |
| PLOG(ERROR) << "Failed to write method bitmap to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_class_method_bitmaps_ += method_bitmap_size_; |
| } |
| |
| if (!out->WriteFully(method_offsets_.data(), GetMethodOffsetsRawSize())) { |
| PLOG(ERROR) << "Failed to write method offsets to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_class_method_offsets_ += GetMethodOffsetsRawSize(); |
| return true; |
| } |
| |
| const uint8_t* OatWriter::LookupBootImageInternTableSlot(const DexFile& dex_file, |
| dex::StringIndex string_idx) |
| NO_THREAD_SAFETY_ANALYSIS { // Single-threaded OatWriter can avoid locking. |
| uint32_t utf16_length; |
| const char* utf8_data = dex_file.StringDataAndUtf16LengthByIdx(string_idx, &utf16_length); |
| DCHECK_EQ(utf16_length, CountModifiedUtf8Chars(utf8_data)); |
| InternTable::Utf8String string(utf16_length, |
| utf8_data, |
| ComputeUtf16HashFromModifiedUtf8(utf8_data, utf16_length)); |
| const InternTable* intern_table = Runtime::Current()->GetClassLinker()->intern_table_; |
| for (const InternTable::Table::UnorderedSet& table : intern_table->strong_interns_.tables_) { |
| auto it = table.Find(string); |
| if (it != table.end()) { |
| return reinterpret_cast<const uint8_t*>(std::addressof(*it)); |
| } |
| } |
| LOG(FATAL) << "Did not find boot image string " << utf8_data; |
| UNREACHABLE(); |
| } |
| |
| const uint8_t* OatWriter::LookupBootImageClassTableSlot(const DexFile& dex_file, |
| dex::TypeIndex type_idx) |
| NO_THREAD_SAFETY_ANALYSIS { // Single-threaded OatWriter can avoid locking. |
| const char* descriptor = dex_file.StringByTypeIdx(type_idx); |
| ClassTable::DescriptorHashPair pair(descriptor, ComputeModifiedUtf8Hash(descriptor)); |
| ClassTable* table = Runtime::Current()->GetClassLinker()->boot_class_table_.get(); |
| for (const ClassTable::ClassSet& class_set : table->classes_) { |
| auto it = class_set.Find(pair); |
| if (it != class_set.end()) { |
| return reinterpret_cast<const uint8_t*>(std::addressof(*it)); |
| } |
| } |
| LOG(FATAL) << "Did not find boot image class " << descriptor; |
| UNREACHABLE(); |
| } |
| |
| } // namespace linker |
| } // namespace art |