| /* |
| * 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 <zlib.h> |
| |
| #include "arch/arm64/instruction_set_features_arm64.h" |
| #include "art_method-inl.h" |
| #include "base/allocator.h" |
| #include "base/bit_vector.h" |
| #include "base/stl_util.h" |
| #include "base/unix_file/fd_file.h" |
| #include "class_linker.h" |
| #include "compiled_class.h" |
| #include "compiled_method.h" |
| #include "dex_file-inl.h" |
| #include "dex/verification_results.h" |
| #include "driver/compiler_driver.h" |
| #include "driver/compiler_options.h" |
| #include "gc/space/space.h" |
| #include "image_writer.h" |
| #include "linker/relative_patcher.h" |
| #include "mirror/array.h" |
| #include "mirror/class_loader.h" |
| #include "mirror/dex_cache-inl.h" |
| #include "mirror/object-inl.h" |
| #include "os.h" |
| #include "output_stream.h" |
| #include "safe_map.h" |
| #include "scoped_thread_state_change.h" |
| #include "handle_scope-inl.h" |
| #include "verifier/method_verifier.h" |
| |
| namespace art { |
| |
| #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(const std::vector<const DexFile*>& dex_files, |
| uint32_t image_file_location_oat_checksum, |
| uintptr_t image_file_location_oat_begin, |
| int32_t image_patch_delta, |
| const CompilerDriver* compiler, |
| ImageWriter* image_writer, |
| TimingLogger* timings, |
| SafeMap<std::string, std::string>* key_value_store) |
| : compiler_driver_(compiler), |
| image_writer_(image_writer), |
| dex_files_(&dex_files), |
| size_(0u), |
| bss_size_(0u), |
| oat_data_offset_(0u), |
| image_file_location_oat_checksum_(image_file_location_oat_checksum), |
| image_file_location_oat_begin_(image_file_location_oat_begin), |
| image_patch_delta_(image_patch_delta), |
| key_value_store_(key_value_store), |
| oat_header_(nullptr), |
| 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_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_mapping_table_(0), |
| size_vmap_table_(0), |
| size_gc_map_(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_methods_offsets_(0), |
| size_oat_class_type_(0), |
| size_oat_class_status_(0), |
| size_oat_class_method_bitmaps_(0), |
| size_oat_class_method_offsets_(0), |
| method_offset_map_() { |
| CHECK(key_value_store != nullptr); |
| |
| InstructionSet instruction_set = compiler_driver_->GetInstructionSet(); |
| const InstructionSetFeatures* features = compiler_driver_->GetInstructionSetFeatures(); |
| relative_patcher_ = linker::RelativePatcher::Create(instruction_set, features, |
| &method_offset_map_); |
| |
| size_t offset; |
| { |
| TimingLogger::ScopedTiming split("InitOatHeader", timings); |
| offset = InitOatHeader(); |
| } |
| { |
| TimingLogger::ScopedTiming split("InitOatDexFiles", timings); |
| offset = InitOatDexFiles(offset); |
| } |
| { |
| TimingLogger::ScopedTiming split("InitDexFiles", timings); |
| offset = InitDexFiles(offset); |
| } |
| { |
| TimingLogger::ScopedTiming split("InitOatClasses", timings); |
| offset = InitOatClasses(offset); |
| } |
| { |
| TimingLogger::ScopedTiming split("InitOatMaps", timings); |
| offset = InitOatMaps(offset); |
| } |
| { |
| TimingLogger::ScopedTiming split("InitOatCode", timings); |
| offset = InitOatCode(offset); |
| } |
| { |
| TimingLogger::ScopedTiming split("InitOatCodeDexFiles", timings); |
| offset = InitOatCodeDexFiles(offset); |
| } |
| size_ = offset; |
| |
| CHECK_EQ(dex_files_->size(), oat_dex_files_.size()); |
| CHECK_EQ(compiler->IsImage(), image_writer_ != nullptr); |
| CHECK_EQ(compiler->IsImage(), |
| key_value_store_->find(OatHeader::kImageLocationKey) == key_value_store_->end()); |
| CHECK_ALIGNED(image_patch_delta_, kPageSize); |
| } |
| |
| OatWriter::~OatWriter() { |
| delete oat_header_; |
| STLDeleteElements(&oat_dex_files_); |
| STLDeleteElements(&oat_classes_); |
| } |
| |
| struct OatWriter::GcMapDataAccess { |
| static const SwapVector<uint8_t>* GetData(const CompiledMethod* compiled_method) ALWAYS_INLINE { |
| return compiled_method->GetGcMap(); |
| } |
| |
| static uint32_t GetOffset(OatClass* oat_class, size_t method_offsets_index) ALWAYS_INLINE { |
| uint32_t offset = oat_class->method_headers_[method_offsets_index].gc_map_offset_; |
| return offset == 0u ? 0u : |
| (oat_class->method_offsets_[method_offsets_index].code_offset_ & ~1) - offset; |
| } |
| |
| static void SetOffset(OatClass* oat_class, size_t method_offsets_index, uint32_t offset) |
| ALWAYS_INLINE { |
| oat_class->method_headers_[method_offsets_index].gc_map_offset_ = |
| (oat_class->method_offsets_[method_offsets_index].code_offset_ & ~1) - offset; |
| } |
| |
| static const char* Name() { |
| return "GC map"; |
| } |
| }; |
| |
| struct OatWriter::MappingTableDataAccess { |
| static const SwapVector<uint8_t>* GetData(const CompiledMethod* compiled_method) ALWAYS_INLINE { |
| return compiled_method->GetMappingTable(); |
| } |
| |
| static uint32_t GetOffset(OatClass* oat_class, size_t method_offsets_index) ALWAYS_INLINE { |
| uint32_t offset = oat_class->method_headers_[method_offsets_index].mapping_table_offset_; |
| return offset == 0u ? 0u : |
| (oat_class->method_offsets_[method_offsets_index].code_offset_ & ~1) - offset; |
| } |
| |
| static void SetOffset(OatClass* oat_class, size_t method_offsets_index, uint32_t offset) |
| ALWAYS_INLINE { |
| oat_class->method_headers_[method_offsets_index].mapping_table_offset_ = |
| (oat_class->method_offsets_[method_offsets_index].code_offset_ & ~1) - offset; |
| } |
| |
| static const char* Name() { |
| return "mapping table"; |
| } |
| }; |
| |
| struct OatWriter::VmapTableDataAccess { |
| static const SwapVector<uint8_t>* GetData(const CompiledMethod* compiled_method) ALWAYS_INLINE { |
| return compiled_method->GetVmapTable(); |
| } |
| |
| static uint32_t GetOffset(OatClass* oat_class, size_t method_offsets_index) ALWAYS_INLINE { |
| uint32_t offset = oat_class->method_headers_[method_offsets_index].vmap_table_offset_; |
| return offset == 0u ? 0u : |
| (oat_class->method_offsets_[method_offsets_index].code_offset_ & ~1) - offset; |
| } |
| |
| static void SetOffset(OatClass* oat_class, size_t method_offsets_index, uint32_t offset) |
| ALWAYS_INLINE { |
| oat_class->method_headers_[method_offsets_index].vmap_table_offset_ = |
| (oat_class->method_offsets_[method_offsets_index].code_offset_ & ~1) - offset; |
| } |
| |
| static const char* Name() { |
| return "vmap table"; |
| } |
| }; |
| |
| class OatWriter::DexMethodVisitor { |
| public: |
| DexMethodVisitor(OatWriter* writer, size_t offset) |
| : writer_(writer), |
| offset_(offset), |
| dex_file_(nullptr), |
| class_def_index_(DexFile::kDexNoIndex) { |
| } |
| |
| virtual bool StartClass(const DexFile* dex_file, size_t class_def_index) { |
| DCHECK(dex_file_ == nullptr); |
| DCHECK_EQ(class_def_index_, DexFile::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_ = DexFile::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) { |
| DexMethodVisitor::StartClass(dex_file, class_def_index); |
| DCHECK_LT(oat_class_index_, writer_->oat_classes_.size()); |
| method_offsets_index_ = 0u; |
| return true; |
| } |
| |
| bool EndClass() { |
| ++oat_class_index_; |
| return DexMethodVisitor::EndClass(); |
| } |
| |
| protected: |
| size_t oat_class_index_; |
| size_t method_offsets_index_; |
| }; |
| |
| class OatWriter::InitOatClassesMethodVisitor : public DexMethodVisitor { |
| public: |
| InitOatClassesMethodVisitor(OatWriter* writer, size_t offset) |
| : DexMethodVisitor(writer, offset), |
| compiled_methods_(), |
| num_non_null_compiled_methods_(0u) { |
| compiled_methods_.reserve(256u); |
| } |
| |
| bool StartClass(const DexFile* dex_file, size_t class_def_index) { |
| DexMethodVisitor::StartClass(dex_file, class_def_index); |
| compiled_methods_.clear(); |
| num_non_null_compiled_methods_ = 0u; |
| return true; |
| } |
| |
| bool VisitMethod(size_t class_def_method_index ATTRIBUTE_UNUSED, const ClassDataItemIterator& it) { |
| // Fill in the compiled_methods_ array for methods that have a |
| // CompiledMethod. We track the number of non-null entries in |
| // num_non_null_compiled_methods_ 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 (compiled_method != nullptr) { |
| ++num_non_null_compiled_methods_; |
| } |
| return true; |
| } |
| |
| bool EndClass() { |
| ClassReference class_ref(dex_file_, class_def_index_); |
| CompiledClass* compiled_class = writer_->compiler_driver_->GetCompiledClass(class_ref); |
| mirror::Class::Status status; |
| if (compiled_class != nullptr) { |
| status = compiled_class->GetStatus(); |
| } else if (writer_->compiler_driver_->GetVerificationResults()->IsClassRejected(class_ref)) { |
| status = mirror::Class::kStatusError; |
| } else { |
| status = mirror::Class::kStatusNotReady; |
| } |
| |
| OatClass* oat_class = new OatClass(offset_, compiled_methods_, |
| num_non_null_compiled_methods_, status); |
| writer_->oat_classes_.push_back(oat_class); |
| oat_class->UpdateChecksum(writer_->oat_header_); |
| offset_ += oat_class->SizeOf(); |
| return DexMethodVisitor::EndClass(); |
| } |
| |
| private: |
| std::vector<CompiledMethod*> compiled_methods_; |
| size_t num_non_null_compiled_methods_; |
| }; |
| |
| class OatWriter::InitCodeMethodVisitor : public OatDexMethodVisitor { |
| public: |
| InitCodeMethodVisitor(OatWriter* writer, size_t offset) |
| : OatDexMethodVisitor(writer, offset), |
| debuggable_(writer->GetCompilerDriver()->GetCompilerOptions().GetDebuggable()) { |
| writer_->absolute_patch_locations_.reserve( |
| writer_->compiler_driver_->GetNonRelativeLinkerPatchCount()); |
| } |
| |
| bool EndClass() { |
| OatDexMethodVisitor::EndClass(); |
| if (oat_class_index_ == writer_->oat_classes_.size()) { |
| offset_ = writer_->relative_patcher_->ReserveSpaceEnd(offset_); |
| } |
| return true; |
| } |
| |
| bool VisitMethod(size_t class_def_method_index, const ClassDataItemIterator& it) |
| SHARED_REQUIRES(Locks::mutator_lock_) { |
| OatClass* oat_class = writer_->oat_classes_[oat_class_index_]; |
| CompiledMethod* compiled_method = oat_class->GetCompiledMethod(class_def_method_index); |
| |
| if (compiled_method != nullptr) { |
| // Derived from CompiledMethod. |
| uint32_t quick_code_offset = 0; |
| |
| const SwapVector<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 = false; |
| if (debuggable_) { |
| quick_code_offset = NewQuickCodeOffset(compiled_method, it, thumb_offset); |
| } else { |
| auto lb = dedupe_map_.lower_bound(compiled_method); |
| if (lb != dedupe_map_.end() && !dedupe_map_.key_comp()(compiled_method, lb->first)) { |
| quick_code_offset = lb->second; |
| deduped = true; |
| } else { |
| quick_code_offset = NewQuickCodeOffset(compiled_method, it, thumb_offset); |
| dedupe_map_.PutBefore(lb, compiled_method, quick_code_offset); |
| } |
| } |
| |
| if (code_size != 0) { |
| MethodReference method_ref(dex_file_, it.GetMemberIndex()); |
| auto method_lb = writer_->method_offset_map_.map.lower_bound(method_ref); |
| if (method_lb != writer_->method_offset_map_.map.end() && |
| !writer_->method_offset_map_.map.key_comp()(method_ref, method_lb->first)) { |
| // TODO: Should this be a hard failure? |
| LOG(WARNING) << "Multiple definitions of " |
| << PrettyMethod(method_ref.dex_method_index, *method_ref.dex_file) |
| << ((method_lb->second != quick_code_offset) ? "; OFFSET MISMATCH" : ""); |
| } else { |
| writer_->method_offset_map_.map.PutBefore(method_lb, 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 mapping_table_offset = method_header->mapping_table_offset_; |
| uint32_t vmap_table_offset = method_header->vmap_table_offset_; |
| // If we don't have quick code, then we must have a vmap, as that is how the dex2dex |
| // compiler records its transformations. |
| DCHECK(quick_code != nullptr || vmap_table_offset != 0); |
| uint32_t gc_map_offset = method_header->gc_map_offset_; |
| // 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 (mapping_table_offset != 0u && code_offset != 0u) { |
| mapping_table_offset += code_offset; |
| DCHECK_LT(mapping_table_offset, code_offset) << "Overflow in oat offsets"; |
| } |
| if (vmap_table_offset != 0u && code_offset != 0u) { |
| vmap_table_offset += code_offset; |
| DCHECK_LT(vmap_table_offset, code_offset) << "Overflow in oat offsets"; |
| } |
| if (gc_map_offset != 0u && code_offset != 0u) { |
| gc_map_offset += code_offset; |
| DCHECK_LT(gc_map_offset, code_offset) << "Overflow in oat offsets"; |
| } |
| 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(mapping_table_offset, vmap_table_offset, |
| gc_map_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()); |
| } |
| } |
| } |
| } |
| |
| if (writer_->compiler_driver_->GetCompilerOptions().GetGenerateDebugInfo()) { |
| // Record debug information for this function if we are doing that. |
| const uint32_t quick_code_start = quick_code_offset - |
| writer_->oat_header_->GetExecutableOffset() - thumb_offset; |
| writer_->method_info_.push_back(DebugInfo { |
| dex_file_, |
| class_def_index_, |
| it.GetMemberIndex(), |
| it.GetMethodAccessFlags(), |
| it.GetMethodCodeItem(), |
| deduped, |
| quick_code_start, |
| quick_code_start + code_size, |
| compiled_method}); |
| } |
| |
| if (kIsDebugBuild) { |
| // We expect GC maps except when the class hasn't been verified or the method is native. |
| const CompilerDriver* compiler_driver = writer_->compiler_driver_; |
| ClassReference class_ref(dex_file_, class_def_index_); |
| CompiledClass* compiled_class = compiler_driver->GetCompiledClass(class_ref); |
| mirror::Class::Status status; |
| if (compiled_class != nullptr) { |
| status = compiled_class->GetStatus(); |
| } else if (compiler_driver->GetVerificationResults()->IsClassRejected(class_ref)) { |
| status = mirror::Class::kStatusError; |
| } else { |
| status = mirror::Class::kStatusNotReady; |
| } |
| const SwapVector<uint8_t>* gc_map = compiled_method->GetGcMap(); |
| if (gc_map != nullptr) { |
| size_t gc_map_size = gc_map->size() * sizeof(gc_map[0]); |
| bool is_native = it.MemberIsNative(); |
| CHECK(gc_map_size != 0 || is_native || status < mirror::Class::kStatusVerified) |
| << gc_map << " " << gc_map_size << " " << (is_native ? "true" : "false") << " " |
| << (status < mirror::Class::kStatusVerified) << " " << status << " " |
| << PrettyMethod(it.GetMemberIndex(), *dex_file_); |
| } |
| } |
| |
| 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; |
| ++method_offsets_index_; |
| } |
| |
| return true; |
| } |
| |
| private: |
| struct CodeOffsetsKeyComparator { |
| bool operator()(const CompiledMethod* lhs, const CompiledMethod* rhs) const { |
| if (lhs->GetQuickCode() != rhs->GetQuickCode()) { |
| return lhs->GetQuickCode() < rhs->GetQuickCode(); |
| } |
| // If the code is the same, all other fields are likely to be the same as well. |
| if (UNLIKELY(lhs->GetMappingTable() != rhs->GetMappingTable())) { |
| return lhs->GetMappingTable() < rhs->GetMappingTable(); |
| } |
| if (UNLIKELY(lhs->GetVmapTable() != rhs->GetVmapTable())) { |
| return lhs->GetVmapTable() < rhs->GetVmapTable(); |
| } |
| if (UNLIKELY(lhs->GetGcMap() != rhs->GetGcMap())) { |
| return lhs->GetGcMap() < rhs->GetGcMap(); |
| } |
| const auto& lhs_patches = lhs->GetPatches(); |
| const auto& rhs_patches = rhs->GetPatches(); |
| if (UNLIKELY(lhs_patches.size() != rhs_patches.size())) { |
| return lhs_patches.size() < rhs_patches.size(); |
| } |
| auto rit = rhs_patches.begin(); |
| for (const LinkerPatch& lpatch : lhs_patches) { |
| if (UNLIKELY(!(lpatch == *rit))) { |
| return lpatch < *rit; |
| } |
| ++rit; |
| } |
| return false; |
| } |
| }; |
| |
| uint32_t NewQuickCodeOffset(CompiledMethod* compiled_method, |
| const ClassDataItemIterator& it, |
| uint32_t thumb_offset) { |
| offset_ = writer_->relative_patcher_->ReserveSpace( |
| offset_, compiled_method, MethodReference(dex_file_, it.GetMemberIndex())); |
| offset_ = compiled_method->AlignCode(offset_); |
| DCHECK_ALIGNED_PARAM(offset_, |
| GetInstructionSetAlignment(compiled_method->GetInstructionSet())); |
| return offset_ + sizeof(OatQuickMethodHeader) + thumb_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 of compiler's --debuggable option. |
| const bool debuggable_; |
| }; |
| |
| template <typename DataAccess> |
| 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) |
| SHARED_REQUIRES(Locks::mutator_lock_) { |
| OatClass* oat_class = writer_->oat_classes_[oat_class_index_]; |
| CompiledMethod* compiled_method = oat_class->GetCompiledMethod(class_def_method_index); |
| |
| if (compiled_method != nullptr) { |
| DCHECK_LT(method_offsets_index_, oat_class->method_offsets_.size()); |
| DCHECK_EQ(DataAccess::GetOffset(oat_class, method_offsets_index_), 0u); |
| |
| const SwapVector<uint8_t>* map = DataAccess::GetData(compiled_method); |
| uint32_t map_size = map == nullptr ? 0 : map->size() * sizeof((*map)[0]); |
| if (map_size != 0u) { |
| auto lb = dedupe_map_.lower_bound(map); |
| if (lb != dedupe_map_.end() && !dedupe_map_.key_comp()(map, lb->first)) { |
| DataAccess::SetOffset(oat_class, method_offsets_index_, lb->second); |
| } else { |
| DataAccess::SetOffset(oat_class, method_offsets_index_, offset_); |
| dedupe_map_.PutBefore(lb, map, offset_); |
| offset_ += map_size; |
| writer_->oat_header_->UpdateChecksum(&(*map)[0], map_size); |
| } |
| } |
| ++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 SwapVector<uint8_t>*, uint32_t> dedupe_map_; |
| }; |
| |
| class OatWriter::InitImageMethodVisitor : public OatDexMethodVisitor { |
| public: |
| InitImageMethodVisitor(OatWriter* writer, size_t offset) |
| : OatDexMethodVisitor(writer, offset), |
| pointer_size_(GetInstructionSetPointerSize(writer_->compiler_driver_->GetInstructionSet())) { |
| } |
| |
| bool VisitMethod(size_t class_def_method_index, const ClassDataItemIterator& it) |
| SHARED_REQUIRES(Locks::mutator_lock_) { |
| OatClass* oat_class = writer_->oat_classes_[oat_class_index_]; |
| CompiledMethod* compiled_method = oat_class->GetCompiledMethod(class_def_method_index); |
| |
| OatMethodOffsets offsets(0u); |
| if (compiled_method != nullptr) { |
| DCHECK_LT(method_offsets_index_, oat_class->method_offsets_.size()); |
| offsets = oat_class->method_offsets_[method_offsets_index_]; |
| ++method_offsets_index_; |
| } |
| |
| ClassLinker* linker = Runtime::Current()->GetClassLinker(); |
| InvokeType invoke_type = it.GetMethodInvokeType(dex_file_->GetClassDef(class_def_index_)); |
| // Unchecked as we hold mutator_lock_ on entry. |
| ScopedObjectAccessUnchecked soa(Thread::Current()); |
| StackHandleScope<1> hs(soa.Self()); |
| Handle<mirror::DexCache> dex_cache(hs.NewHandle(linker->FindDexCache(*dex_file_))); |
| ArtMethod* method = linker->ResolveMethod( |
| *dex_file_, it.GetMemberIndex(), dex_cache, NullHandle<mirror::ClassLoader>(), nullptr, |
| invoke_type); |
| if (method == nullptr) { |
| LOG(INTERNAL_FATAL) << "Unexpected failure to resolve a method: " |
| << PrettyMethod(it.GetMemberIndex(), *dex_file_, true); |
| soa.Self()->AssertPendingException(); |
| mirror::Throwable* exc = soa.Self()->GetException(); |
| std::string dump = exc->Dump(); |
| LOG(FATAL) << dump; |
| UNREACHABLE(); |
| } |
| |
| if (compiled_method != nullptr && compiled_method->GetQuickCode()->size() != 0) { |
| method->SetEntryPointFromQuickCompiledCodePtrSize( |
| reinterpret_cast<void*>(offsets.code_offset_), pointer_size_); |
| } |
| |
| return true; |
| } |
| |
| protected: |
| const size_t pointer_size_; |
| }; |
| |
| class OatWriter::WriteCodeMethodVisitor : public OatDexMethodVisitor { |
| public: |
| WriteCodeMethodVisitor(OatWriter* writer, OutputStream* out, const size_t file_offset, |
| size_t relative_offset) SHARED_LOCK_FUNCTION(Locks::mutator_lock_) |
| : OatDexMethodVisitor(writer, relative_offset), |
| out_(out), |
| file_offset_(file_offset), |
| soa_(Thread::Current()), |
| no_thread_suspension_(soa_.Self(), "OatWriter patching"), |
| class_linker_(Runtime::Current()->GetClassLinker()), |
| dex_cache_(nullptr) { |
| if (writer_->image_writer_ != nullptr) { |
| // If we're creating the image, the address space must be ready so that we can apply patches. |
| CHECK(writer_->image_writer_->IsImageAddressSpaceReady()); |
| patched_code_.reserve(16 * KB); |
| } |
| } |
| |
| ~WriteCodeMethodVisitor() UNLOCK_FUNCTION(Locks::mutator_lock_) { |
| } |
| |
| bool StartClass(const DexFile* dex_file, size_t class_def_index) |
| SHARED_REQUIRES(Locks::mutator_lock_) { |
| OatDexMethodVisitor::StartClass(dex_file, class_def_index); |
| if (dex_cache_ == nullptr || dex_cache_->GetDexFile() != dex_file) { |
| dex_cache_ = class_linker_->FindDexCache(*dex_file); |
| } |
| return true; |
| } |
| |
| bool EndClass() SHARED_REQUIRES(Locks::mutator_lock_) { |
| bool result = OatDexMethodVisitor::EndClass(); |
| if (oat_class_index_ == writer_->oat_classes_.size()) { |
| DCHECK(result); // OatDexMethodVisitor::EndClass() never fails. |
| offset_ = writer_->relative_patcher_->WriteThunks(out_, offset_); |
| if (UNLIKELY(offset_ == 0u)) { |
| PLOG(ERROR) << "Failed to write final relative call thunks"; |
| result = false; |
| } |
| } |
| return result; |
| } |
| |
| bool VisitMethod(size_t class_def_method_index, const ClassDataItemIterator& it) |
| SHARED_REQUIRES(Locks::mutator_lock_) { |
| OatClass* oat_class = writer_->oat_classes_[oat_class_index_]; |
| const CompiledMethod* compiled_method = oat_class->GetCompiledMethod(class_def_method_index); |
| |
| // No thread suspension since dex_cache_ that may get invalidated if that occurs. |
| ScopedAssertNoThreadSuspension tsc(Thread::Current(), __FUNCTION__); |
| if (compiled_method != nullptr) { // ie. not an abstract method |
| size_t file_offset = file_offset_; |
| OutputStream* out = out_; |
| |
| const SwapVector<uint8_t>* quick_code = compiled_method->GetQuickCode(); |
| // Need a wrapper if we create a copy for patching. |
| ArrayRef<const uint8_t> wrapped(*quick_code); |
| 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", it); |
| return false; |
| } |
| uint32_t aligned_offset = compiled_method->AlignCode(offset_); |
| uint32_t aligned_code_delta = aligned_offset - offset_; |
| if (aligned_code_delta != 0) { |
| if (!writer_->WriteCodeAlignment(out, aligned_code_delta)) { |
| ReportWriteFailure("code alignment padding", it); |
| return false; |
| } |
| offset_ += aligned_code_delta; |
| DCHECK_OFFSET_(); |
| } |
| DCHECK_ALIGNED_PARAM(offset_, |
| GetInstructionSetAlignment(compiled_method->GetInstructionSet())); |
| DCHECK_EQ(method_offsets.code_offset_, |
| offset_ + sizeof(OatQuickMethodHeader) + compiled_method->CodeDelta()) |
| << PrettyMethod(it.GetMemberIndex(), *dex_file_); |
| const OatQuickMethodHeader& method_header = |
| oat_class->method_headers_[method_offsets_index_]; |
| writer_->oat_header_->UpdateChecksum(&method_header, sizeof(method_header)); |
| if (!out->WriteFully(&method_header, sizeof(method_header))) { |
| ReportWriteFailure("method header", it); |
| 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()); |
| wrapped = ArrayRef<const uint8_t>(patched_code_); |
| for (const LinkerPatch& patch : compiled_method->GetPatches()) { |
| if (patch.Type() == kLinkerPatchCallRelative) { |
| // NOTE: Relative calls across oat files are not supported. |
| uint32_t target_offset = GetTargetOffset(patch); |
| uint32_t literal_offset = patch.LiteralOffset(); |
| writer_->relative_patcher_->PatchCall(&patched_code_, literal_offset, |
| offset_ + literal_offset, target_offset); |
| } else if (patch.Type() == kLinkerPatchDexCacheArray) { |
| uint32_t target_offset = GetDexCacheOffset(patch); |
| uint32_t literal_offset = patch.LiteralOffset(); |
| writer_->relative_patcher_->PatchDexCacheReference(&patched_code_, patch, |
| offset_ + literal_offset, |
| target_offset); |
| } else if (patch.Type() == kLinkerPatchCall) { |
| uint32_t target_offset = GetTargetOffset(patch); |
| PatchCodeAddress(&patched_code_, patch.LiteralOffset(), target_offset); |
| } else if (patch.Type() == kLinkerPatchMethod) { |
| ArtMethod* method = GetTargetMethod(patch); |
| PatchMethodAddress(&patched_code_, patch.LiteralOffset(), method); |
| } else if (patch.Type() == kLinkerPatchType) { |
| mirror::Class* type = GetTargetType(patch); |
| PatchObjectAddress(&patched_code_, patch.LiteralOffset(), type); |
| } |
| } |
| } |
| |
| writer_->oat_header_->UpdateChecksum(wrapped.data(), code_size); |
| if (!out->WriteFully(wrapped.data(), code_size)) { |
| ReportWriteFailure("method code", it); |
| return false; |
| } |
| writer_->size_code_ += code_size; |
| offset_ += code_size; |
| } |
| DCHECK_OFFSET_(); |
| ++method_offsets_index_; |
| } |
| |
| return true; |
| } |
| |
| private: |
| OutputStream* const out_; |
| const size_t file_offset_; |
| const ScopedObjectAccess soa_; |
| const ScopedAssertNoThreadSuspension no_thread_suspension_; |
| ClassLinker* const class_linker_; |
| mirror::DexCache* dex_cache_; |
| std::vector<uint8_t> patched_code_; |
| |
| void ReportWriteFailure(const char* what, const ClassDataItemIterator& it) { |
| PLOG(ERROR) << "Failed to write " << what << " for " |
| << PrettyMethod(it.GetMemberIndex(), *dex_file_) << " to " << out_->GetLocation(); |
| } |
| |
| ArtMethod* GetTargetMethod(const LinkerPatch& patch) |
| SHARED_REQUIRES(Locks::mutator_lock_) { |
| MethodReference ref = patch.TargetMethod(); |
| mirror::DexCache* dex_cache = |
| (dex_file_ == ref.dex_file) ? dex_cache_ : class_linker_->FindDexCache(*ref.dex_file); |
| ArtMethod* method = dex_cache->GetResolvedMethod( |
| ref.dex_method_index, class_linker_->GetImagePointerSize()); |
| CHECK(method != nullptr); |
| return method; |
| } |
| |
| uint32_t GetTargetOffset(const LinkerPatch& patch) SHARED_REQUIRES(Locks::mutator_lock_) { |
| auto target_it = writer_->method_offset_map_.map.find(patch.TargetMethod()); |
| uint32_t target_offset = |
| (target_it != writer_->method_offset_map_.map.end()) ? target_it->second : 0u; |
| // If there's no compiled code, point to the correct trampoline. |
| if (UNLIKELY(target_offset == 0)) { |
| ArtMethod* target = GetTargetMethod(patch); |
| DCHECK(target != nullptr); |
| size_t size = GetInstructionSetPointerSize(writer_->compiler_driver_->GetInstructionSet()); |
| const void* oat_code_offset = target->GetEntryPointFromQuickCompiledCodePtrSize(size); |
| if (oat_code_offset != 0) { |
| 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; |
| } |
| |
| mirror::Class* GetTargetType(const LinkerPatch& patch) |
| SHARED_REQUIRES(Locks::mutator_lock_) { |
| mirror::DexCache* dex_cache = (dex_file_ == patch.TargetTypeDexFile()) |
| ? dex_cache_ : class_linker_->FindDexCache(*patch.TargetTypeDexFile()); |
| mirror::Class* type = dex_cache->GetResolvedType(patch.TargetTypeIndex()); |
| CHECK(type != nullptr); |
| return type; |
| } |
| |
| uint32_t GetDexCacheOffset(const LinkerPatch& patch) SHARED_REQUIRES(Locks::mutator_lock_) { |
| if (writer_->image_writer_ != nullptr) { |
| auto* element = writer_->image_writer_->GetDexCacheArrayElementImageAddress( |
| patch.TargetDexCacheDexFile(), patch.TargetDexCacheElementOffset()); |
| const uint8_t* oat_data = writer_->image_writer_->GetOatFileBegin() + file_offset_; |
| return reinterpret_cast<const uint8_t*>(element) - oat_data; |
| } else { |
| LOG(FATAL) << "Unimplemented."; |
| UNREACHABLE(); |
| } |
| } |
| |
| void PatchObjectAddress(std::vector<uint8_t>* code, uint32_t offset, mirror::Object* object) |
| SHARED_REQUIRES(Locks::mutator_lock_) { |
| // NOTE: Direct method pointers across oat files don't use linker patches. However, direct |
| // type pointers across oat files do. (TODO: Investigate why.) |
| if (writer_->image_writer_ != nullptr) { |
| object = writer_->image_writer_->GetImageAddress(object); |
| } |
| 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 PatchMethodAddress(std::vector<uint8_t>* code, uint32_t offset, ArtMethod* method) |
| SHARED_REQUIRES(Locks::mutator_lock_) { |
| // NOTE: Direct method pointers across oat files don't use linker patches. However, direct |
| // type pointers across oat files do. (TODO: Investigate why.) |
| if (writer_->image_writer_ != nullptr) { |
| method = writer_->image_writer_->GetImageMethodAddress(method); |
| } |
| // Note: We only patch ArtMethods to low 4gb since thats where the image is. |
| uint32_t address = PointerToLowMemUInt32(method); |
| 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) |
| SHARED_REQUIRES(Locks::mutator_lock_) { |
| uint32_t address = writer_->image_writer_ == nullptr ? target_offset : |
| PointerToLowMemUInt32(writer_->image_writer_->GetOatFileBegin() + |
| writer_->oat_data_offset_ + target_offset); |
| 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; |
| } |
| }; |
| |
| template <typename DataAccess> |
| 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) { |
| OatClass* oat_class = writer_->oat_classes_[oat_class_index_]; |
| const CompiledMethod* compiled_method = oat_class->GetCompiledMethod(class_def_method_index); |
| |
| if (compiled_method != nullptr) { // ie. not an abstract method |
| size_t file_offset = file_offset_; |
| OutputStream* out = out_; |
| |
| uint32_t map_offset = DataAccess::GetOffset(oat_class, method_offsets_index_); |
| ++method_offsets_index_; |
| |
| // Write deduplicated map. |
| const SwapVector<uint8_t>* map = DataAccess::GetData(compiled_method); |
| size_t map_size = map == nullptr ? 0 : map->size() * sizeof((*map)[0]); |
| DCHECK((map_size == 0u && map_offset == 0u) || |
| (map_size != 0u && map_offset != 0u && map_offset <= offset_)) |
| << map_size << " " << map_offset << " " << offset_ << " " |
| << PrettyMethod(it.GetMemberIndex(), *dex_file_) << " for " << DataAccess::Name(); |
| if (map_size != 0u && map_offset == offset_) { |
| if (UNLIKELY(!out->WriteFully(&(*map)[0], 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 " << DataAccess::Name() << " for " |
| << PrettyMethod(it.GetMemberIndex(), *dex_file_) << " 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; |
| } |
| 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); |
| while (it.HasNextStaticField()) { |
| it.Next(); |
| } |
| while (it.HasNextInstanceField()) { |
| it.Next(); |
| } |
| 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() { |
| oat_header_ = OatHeader::Create(compiler_driver_->GetInstructionSet(), |
| compiler_driver_->GetInstructionSetFeatures(), |
| dex_files_, |
| image_file_location_oat_checksum_, |
| image_file_location_oat_begin_, |
| key_value_store_); |
| |
| return oat_header_->GetHeaderSize(); |
| } |
| |
| size_t OatWriter::InitOatDexFiles(size_t offset) { |
| // create the OatDexFiles |
| for (size_t i = 0; i != dex_files_->size(); ++i) { |
| const DexFile* dex_file = (*dex_files_)[i]; |
| CHECK(dex_file != nullptr); |
| OatDexFile* oat_dex_file = new OatDexFile(offset, *dex_file); |
| oat_dex_files_.push_back(oat_dex_file); |
| offset += oat_dex_file->SizeOf(); |
| } |
| return offset; |
| } |
| |
| size_t OatWriter::InitDexFiles(size_t offset) { |
| // calculate the offsets within OatDexFiles to the DexFiles |
| for (size_t i = 0; i != dex_files_->size(); ++i) { |
| // dex files are required to be 4 byte aligned |
| size_t original_offset = offset; |
| offset = RoundUp(offset, 4); |
| size_dex_file_alignment_ += offset - original_offset; |
| |
| // set offset in OatDexFile to DexFile |
| oat_dex_files_[i]->dex_file_offset_ = offset; |
| |
| const DexFile* dex_file = (*dex_files_)[i]; |
| offset += dex_file->GetHeader().file_size_; |
| } |
| 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_classes_.begin(); |
| for (OatDexFile* oat_dex_file : oat_dex_files_) { |
| for (uint32_t& method_offset : oat_dex_file->methods_offsets_) { |
| DCHECK(oat_class_it != oat_classes_.end()); |
| method_offset = (*oat_class_it)->offset_; |
| ++oat_class_it; |
| } |
| oat_dex_file->UpdateChecksum(oat_header_); |
| } |
| CHECK(oat_class_it == oat_classes_.end()); |
| |
| return offset; |
| } |
| |
| size_t OatWriter::InitOatMaps(size_t offset) { |
| #define VISIT(VisitorType) \ |
| do { \ |
| VisitorType visitor(this, offset); \ |
| bool success = VisitDexMethods(&visitor); \ |
| DCHECK(success); \ |
| offset = visitor.GetOffset(); \ |
| } while (false) |
| |
| VISIT(InitMapMethodVisitor<GcMapDataAccess>); |
| VISIT(InitMapMethodVisitor<MappingTableDataAccess>); |
| VISIT(InitMapMethodVisitor<VmapTableDataAccess>); |
| |
| #undef VISIT |
| |
| return offset; |
| } |
| |
| size_t OatWriter::InitOatCode(size_t offset) { |
| // calculate the offsets within OatHeader to executable code |
| size_t old_offset = offset; |
| size_t adjusted_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; |
| if (compiler_driver_->IsImage()) { |
| CHECK_EQ(image_patch_delta_, 0); |
| InstructionSet instruction_set = compiler_driver_->GetInstructionSet(); |
| |
| #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.reset(compiler_driver_->Create ## fn_name()); \ |
| offset += field->size(); |
| |
| DO_TRAMPOLINE(interpreter_to_interpreter_bridge_, InterpreterToInterpreterBridge); |
| DO_TRAMPOLINE(interpreter_to_compiled_code_bridge_, InterpreterToCompiledCodeBridge); |
| 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_->SetInterpreterToInterpreterBridgeOffset(0); |
| oat_header_->SetInterpreterToCompiledCodeBridgeOffset(0); |
| oat_header_->SetJniDlsymLookupOffset(0); |
| oat_header_->SetQuickGenericJniTrampolineOffset(0); |
| oat_header_->SetQuickImtConflictTrampolineOffset(0); |
| oat_header_->SetQuickResolutionTrampolineOffset(0); |
| oat_header_->SetQuickToInterpreterBridgeOffset(0); |
| oat_header_->SetImagePatchDelta(image_patch_delta_); |
| } |
| return offset; |
| } |
| |
| size_t OatWriter::InitOatCodeDexFiles(size_t offset) { |
| #define VISIT(VisitorType) \ |
| do { \ |
| VisitorType visitor(this, offset); \ |
| bool success = VisitDexMethods(&visitor); \ |
| DCHECK(success); \ |
| offset = visitor.GetOffset(); \ |
| } while (false) |
| |
| VISIT(InitCodeMethodVisitor); |
| if (compiler_driver_->IsImage()) { |
| VISIT(InitImageMethodVisitor); |
| } |
| |
| #undef VISIT |
| |
| return offset; |
| } |
| |
| bool OatWriter::WriteRodata(OutputStream* out) { |
| const off_t raw_file_offset = out->Seek(0, kSeekCurrent); |
| if (raw_file_offset == (off_t) -1) { |
| LOG(ERROR) << "Failed to get file offset in " << out->GetLocation(); |
| return false; |
| } |
| const size_t file_offset = static_cast<size_t>(raw_file_offset); |
| oat_data_offset_ = file_offset; |
| |
| // Reserve space for header. It will be written last - after updating the checksum. |
| size_t header_size = oat_header_->GetHeaderSize(); |
| if (out->Seek(header_size, kSeekCurrent) == (off_t) -1) { |
| PLOG(ERROR) << "Failed to reserve space for oat header in " << out->GetLocation(); |
| return false; |
| } |
| size_oat_header_ += sizeof(OatHeader); |
| size_oat_header_key_value_store_ += oat_header_->GetHeaderSize() - sizeof(OatHeader); |
| |
| if (!WriteTables(out, file_offset)) { |
| LOG(ERROR) << "Failed to write oat tables to " << out->GetLocation(); |
| return false; |
| } |
| |
| off_t tables_end_offset = out->Seek(0, kSeekCurrent); |
| if (tables_end_offset == (off_t) -1) { |
| LOG(ERROR) << "Failed to seek to oat code position in " << out->GetLocation(); |
| return false; |
| } |
| size_t relative_offset = static_cast<size_t>(tables_end_offset) - file_offset; |
| relative_offset = WriteMaps(out, file_offset, relative_offset); |
| if (relative_offset == 0) { |
| LOG(ERROR) << "Failed to write oat code 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(); |
| |
| return true; |
| } |
| |
| bool OatWriter::WriteCode(OutputStream* out) { |
| size_t header_size = oat_header_->GetHeaderSize(); |
| 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 == (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_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_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_mapping_table_); |
| DO_STAT(size_vmap_table_); |
| DO_STAT(size_gc_map_); |
| 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_methods_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_); |
| #undef DO_STAT |
| |
| VLOG(compiler) << "size_total=" << PrettySize(size_total) << " (" << size_total << "B)"; \ |
| CHECK_EQ(file_offset + size_total, static_cast<size_t>(oat_end_file_offset)); |
| CHECK_EQ(size_, size_total); |
| } |
| |
| CHECK_EQ(file_offset + size_, static_cast<size_t>(oat_end_file_offset)); |
| CHECK_EQ(size_, relative_offset); |
| |
| // Write the header now that the checksum is final. |
| if (out->Seek(file_offset, kSeekSet) == (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))); |
| if (!out->WriteFully(oat_header_, header_size)) { |
| PLOG(ERROR) << "Failed to write oat header to " << out->GetLocation(); |
| return false; |
| } |
| if (out->Seek(oat_end_file_offset, kSeekSet) == (off_t) -1) { |
| PLOG(ERROR) << "Failed to seek to end after writing oat header to " << out->GetLocation(); |
| return false; |
| } |
| DCHECK_EQ(oat_end_file_offset, out->Seek(0, kSeekCurrent)); |
| |
| return true; |
| } |
| |
| bool OatWriter::WriteTables(OutputStream* out, const size_t file_offset) { |
| for (size_t i = 0; i != oat_dex_files_.size(); ++i) { |
| if (!oat_dex_files_[i]->Write(this, out, file_offset)) { |
| PLOG(ERROR) << "Failed to write oat dex information to " << out->GetLocation(); |
| return false; |
| } |
| } |
| for (size_t i = 0; i != oat_dex_files_.size(); ++i) { |
| uint32_t expected_offset = file_offset + oat_dex_files_[i]->dex_file_offset_; |
| off_t actual_offset = out->Seek(expected_offset, kSeekSet); |
| if (static_cast<uint32_t>(actual_offset) != expected_offset) { |
| const DexFile* dex_file = (*dex_files_)[i]; |
| PLOG(ERROR) << "Failed to seek to dex file section. Actual: " << actual_offset |
| << " Expected: " << expected_offset << " File: " << dex_file->GetLocation(); |
| return false; |
| } |
| const DexFile* dex_file = (*dex_files_)[i]; |
| if (!out->WriteFully(&dex_file->GetHeader(), dex_file->GetHeader().file_size_)) { |
| PLOG(ERROR) << "Failed to write dex file " << dex_file->GetLocation() |
| << " to " << out->GetLocation(); |
| return false; |
| } |
| size_dex_file_ += dex_file->GetHeader().file_size_; |
| } |
| for (size_t i = 0; i != oat_classes_.size(); ++i) { |
| if (!oat_classes_[i]->Write(this, out, file_offset)) { |
| PLOG(ERROR) << "Failed to write oat methods information to " << out->GetLocation(); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| size_t OatWriter::WriteMaps(OutputStream* out, const size_t file_offset, size_t relative_offset) { |
| #define VISIT(VisitorType) \ |
| do { \ |
| VisitorType visitor(this, out, file_offset, relative_offset); \ |
| if (UNLIKELY(!VisitDexMethods(&visitor))) { \ |
| return 0; \ |
| } \ |
| relative_offset = visitor.GetOffset(); \ |
| } while (false) |
| |
| size_t gc_maps_offset = relative_offset; |
| VISIT(WriteMapMethodVisitor<GcMapDataAccess>); |
| size_gc_map_ = relative_offset - gc_maps_offset; |
| |
| size_t mapping_tables_offset = relative_offset; |
| VISIT(WriteMapMethodVisitor<MappingTableDataAccess>); |
| size_mapping_table_ = relative_offset - mapping_tables_offset; |
| |
| size_t vmap_tables_offset = relative_offset; |
| VISIT(WriteMapMethodVisitor<VmapTableDataAccess>); |
| size_vmap_table_ = relative_offset - vmap_tables_offset; |
| |
| #undef VISIT |
| |
| return relative_offset; |
| } |
| |
| size_t OatWriter::WriteCode(OutputStream* out, const size_t file_offset, size_t relative_offset) { |
| if (compiler_driver_->IsImage()) { |
| 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)[0], 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(interpreter_to_interpreter_bridge_); |
| DO_TRAMPOLINE(interpreter_to_compiled_code_bridge_); |
| 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, |
| const size_t file_offset, |
| size_t relative_offset) { |
| #define VISIT(VisitorType) \ |
| do { \ |
| VisitorType visitor(this, out, file_offset, relative_offset); \ |
| if (UNLIKELY(!VisitDexMethods(&visitor))) { \ |
| return 0; \ |
| } \ |
| relative_offset = visitor.GetOffset(); \ |
| } while (false) |
| |
| VISIT(WriteCodeMethodVisitor); |
| |
| #undef VISIT |
| |
| size_code_alignment_ += relative_patcher_->CodeAlignmentSize(); |
| size_relative_call_thunks_ += relative_patcher_->RelativeCallThunksSize(); |
| size_misc_thunks_ += relative_patcher_->MiscThunksSize(); |
| |
| return relative_offset; |
| } |
| |
| bool OatWriter::WriteCodeAlignment(OutputStream* out, uint32_t aligned_code_delta) { |
| static const uint8_t kPadding[] = { |
| 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u |
| }; |
| DCHECK_LE(aligned_code_delta, sizeof(kPadding)); |
| if (UNLIKELY(!out->WriteFully(kPadding, aligned_code_delta))) { |
| return false; |
| } |
| size_code_alignment_ += aligned_code_delta; |
| return true; |
| } |
| |
| std::pair<bool, uint32_t> OatWriter::MethodOffsetMap::FindMethodOffset(MethodReference ref) { |
| auto it = map.find(ref); |
| if (it == map.end()) { |
| return std::pair<bool, uint32_t>(false, 0u); |
| } else { |
| return std::pair<bool, uint32_t>(true, it->second); |
| } |
| } |
| |
| OatWriter::OatDexFile::OatDexFile(size_t offset, const DexFile& dex_file) { |
| offset_ = offset; |
| const std::string& location(dex_file.GetLocation()); |
| dex_file_location_size_ = location.size(); |
| dex_file_location_data_ = reinterpret_cast<const uint8_t*>(location.data()); |
| dex_file_location_checksum_ = dex_file.GetLocationChecksum(); |
| dex_file_offset_ = 0; |
| methods_offsets_.resize(dex_file.NumClassDefs()); |
| } |
| |
| 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(methods_offsets_[0]) * methods_offsets_.size()); |
| } |
| |
| void OatWriter::OatDexFile::UpdateChecksum(OatHeader* oat_header) const { |
| oat_header->UpdateChecksum(&dex_file_location_size_, sizeof(dex_file_location_size_)); |
| oat_header->UpdateChecksum(dex_file_location_data_, dex_file_location_size_); |
| oat_header->UpdateChecksum(&dex_file_location_checksum_, sizeof(dex_file_location_checksum_)); |
| oat_header->UpdateChecksum(&dex_file_offset_, sizeof(dex_file_offset_)); |
| oat_header->UpdateChecksum(&methods_offsets_[0], |
| sizeof(methods_offsets_[0]) * methods_offsets_.size()); |
| } |
| |
| bool OatWriter::OatDexFile::Write(OatWriter* oat_writer, |
| OutputStream* out, |
| const size_t file_offset) const { |
| 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(&methods_offsets_[0], |
| sizeof(methods_offsets_[0]) * methods_offsets_.size())) { |
| PLOG(ERROR) << "Failed to write methods offsets to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_dex_file_methods_offsets_ += |
| sizeof(methods_offsets_[0]) * methods_offsets_.size(); |
| return true; |
| } |
| |
| OatWriter::OatClass::OatClass(size_t offset, |
| const std::vector<CompiledMethod*>& compiled_methods, |
| uint32_t num_non_null_compiled_methods, |
| mirror::Class::Status status) |
| : compiled_methods_(compiled_methods) { |
| uint32_t num_methods = compiled_methods.size(); |
| CHECK_LE(num_non_null_compiled_methods, num_methods); |
| |
| offset_ = offset; |
| oat_method_offsets_offsets_from_oat_class_.resize(num_methods); |
| |
| // Since both kOatClassNoneCompiled and kOatClassAllCompiled could |
| // apply when there are 0 methods, 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 interpretter 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; |
| } |
| |
| status_ = status; |
| method_offsets_.resize(num_non_null_compiled_methods); |
| method_headers_.resize(num_non_null_compiled_methods); |
| |
| uint32_t oat_method_offsets_offset_from_oat_class = sizeof(type_) + sizeof(status_); |
| if (type_ == kOatClassSomeCompiled) { |
| method_bitmap_ = 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 (compiled_method == nullptr) { |
| oat_method_offsets_offsets_from_oat_class_[i] = 0; |
| } else { |
| 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 (type_ == kOatClassSomeCompiled) { |
| method_bitmap_->SetBit(i); |
| } |
| } |
| } |
| } |
| |
| OatWriter::OatClass::~OatClass() { |
| delete method_bitmap_; |
| } |
| |
| size_t OatWriter::OatClass::GetOatMethodOffsetsOffsetFromOatHeader( |
| size_t class_def_method_index_) const { |
| uint32_t method_offset = GetOatMethodOffsetsOffsetFromOatClass(class_def_method_index_); |
| if (method_offset == 0) { |
| return 0; |
| } |
| return offset_ + method_offset; |
| } |
| |
| size_t OatWriter::OatClass::GetOatMethodOffsetsOffsetFromOatClass( |
| size_t class_def_method_index_) const { |
| return oat_method_offsets_offsets_from_oat_class_[class_def_method_index_]; |
| } |
| |
| size_t OatWriter::OatClass::SizeOf() const { |
| return sizeof(status_) |
| + sizeof(type_) |
| + ((method_bitmap_size_ == 0) ? 0 : sizeof(method_bitmap_size_)) |
| + method_bitmap_size_ |
| + (sizeof(method_offsets_[0]) * method_offsets_.size()); |
| } |
| |
| void OatWriter::OatClass::UpdateChecksum(OatHeader* oat_header) const { |
| oat_header->UpdateChecksum(&status_, sizeof(status_)); |
| oat_header->UpdateChecksum(&type_, sizeof(type_)); |
| if (method_bitmap_size_ != 0) { |
| CHECK_EQ(kOatClassSomeCompiled, type_); |
| oat_header->UpdateChecksum(&method_bitmap_size_, sizeof(method_bitmap_size_)); |
| oat_header->UpdateChecksum(method_bitmap_->GetRawStorage(), method_bitmap_size_); |
| } |
| oat_header->UpdateChecksum(&method_offsets_[0], |
| sizeof(method_offsets_[0]) * method_offsets_.size()); |
| } |
| |
| bool OatWriter::OatClass::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_); |
| if (method_bitmap_size_ != 0) { |
| CHECK_EQ(kOatClassSomeCompiled, type_); |
| 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_[0], |
| sizeof(method_offsets_[0]) * method_offsets_.size())) { |
| PLOG(ERROR) << "Failed to write method offsets to " << out->GetLocation(); |
| return false; |
| } |
| oat_writer->size_oat_class_method_offsets_ += sizeof(method_offsets_[0]) * method_offsets_.size(); |
| return true; |
| } |
| |
| } // namespace art |