| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef ART_LIBDEXFILE_DEX_STANDARD_DEX_FILE_H_ |
| #define ART_LIBDEXFILE_DEX_STANDARD_DEX_FILE_H_ |
| |
| #include <iosfwd> |
| |
| #include "dex_file.h" |
| |
| namespace art { |
| |
| class OatDexFile; |
| |
| // Standard dex file. This is the format that is packaged in APKs and produced by tools. |
| class StandardDexFile : public DexFile { |
| public: |
| class Header : public DexFile::Header { |
| // Same for now. |
| }; |
| |
| struct CodeItem : public DexFile::CodeItem { |
| static constexpr size_t kAlignment = 4; |
| |
| private: |
| CodeItem() = default; |
| |
| uint16_t registers_size_; // the number of registers used by this code |
| // (locals + parameters) |
| uint16_t ins_size_; // the number of words of incoming arguments to the method |
| // that this code is for |
| uint16_t outs_size_; // the number of words of outgoing argument space required |
| // by this code for method invocation |
| uint16_t tries_size_; // the number of try_items for this instance. If non-zero, |
| // then these appear as the tries array just after the |
| // insns in this instance. |
| uint32_t debug_info_off_; // Holds file offset to debug info stream. |
| |
| uint32_t insns_size_in_code_units_; // size of the insns array, in 2 byte code units |
| uint16_t insns_[1]; // actual array of bytecode. |
| |
| ART_FRIEND_TEST(CodeItemAccessorsTest, TestDexInstructionsAccessor); |
| friend class CodeItemDataAccessor; |
| friend class CodeItemDebugInfoAccessor; |
| friend class CodeItemInstructionAccessor; |
| friend class DexWriter; |
| friend class StandardDexFile; |
| DISALLOW_COPY_AND_ASSIGN(CodeItem); |
| }; |
| |
| // Write the standard dex specific magic. |
| static void WriteMagic(uint8_t* magic); |
| |
| // Write the current version, note that the input is the address of the magic. |
| static void WriteCurrentVersion(uint8_t* magic); |
| |
| static const uint8_t kDexMagic[kDexMagicSize]; |
| static constexpr size_t kNumDexVersions = 4; |
| static const uint8_t kDexMagicVersions[kNumDexVersions][kDexVersionLen]; |
| |
| // Returns true if the byte string points to the magic value. |
| static bool IsMagicValid(const uint8_t* magic); |
| virtual bool IsMagicValid() const override; |
| |
| // Returns true if the byte string after the magic is the correct value. |
| static bool IsVersionValid(const uint8_t* magic); |
| virtual bool IsVersionValid() const override; |
| |
| virtual bool SupportsDefaultMethods() const override; |
| |
| uint32_t GetCodeItemSize(const DexFile::CodeItem& item) const override; |
| |
| virtual size_t GetDequickenedSize() const override { |
| return Size(); |
| } |
| |
| private: |
| StandardDexFile(const uint8_t* base, |
| size_t size, |
| const std::string& location, |
| uint32_t location_checksum, |
| const OatDexFile* oat_dex_file, |
| std::unique_ptr<DexFileContainer> container) |
| : DexFile(base, |
| size, |
| /*data_begin*/ base, |
| /*data_size*/ size, |
| location, |
| location_checksum, |
| oat_dex_file, |
| std::move(container), |
| /*is_compact_dex*/ false) {} |
| |
| friend class DexFileLoader; |
| friend class DexFileVerifierTest; |
| |
| ART_FRIEND_TEST(ClassLinkerTest, RegisterDexFileName); // for constructor |
| friend class OptimizingUnitTestHelper; // for constructor |
| |
| DISALLOW_COPY_AND_ASSIGN(StandardDexFile); |
| }; |
| |
| } // namespace art |
| |
| #endif // ART_LIBDEXFILE_DEX_STANDARD_DEX_FILE_H_ |