Home | History | Annotate | Download | only in compiler 
      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ART_COMPILER_ELF_WRITER_MCLINKER_H_
     18 #define ART_COMPILER_ELF_WRITER_MCLINKER_H_
     19 
     20 #include <memory>
     21 
     22 #include "elf_writer.h"
     23 #include "safe_map.h"
     24 
     25 namespace mcld {
     26 class IRBuilder;
     27 class Input;
     28 class LDSection;
     29 class LDSymbol;
     30 class Linker;
     31 class LinkerConfig;
     32 class LinkerScript;
     33 class Module;
     34 }  // namespace mcld
     35 
     36 namespace art {
     37 
     38 class CompiledCode;
     39 
     40 class ElfWriterMclinker FINAL : public ElfWriter {
     41  public:
     42   // Write an ELF file. Returns true on success, false on failure.
     43   static bool Create(File* file,
     44                      OatWriter* oat_writer,
     45                      const std::vector<const DexFile*>& dex_files,
     46                      const std::string& android_root,
     47                      bool is_host,
     48                      const CompilerDriver& driver)
     49       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
     50 
     51  protected:
     52   bool Write(OatWriter* oat_writer,
     53              const std::vector<const DexFile*>& dex_files,
     54              const std::string& android_root,
     55              bool is_host)
     56       OVERRIDE
     57       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
     58 
     59  private:
     60   ElfWriterMclinker(const CompilerDriver& driver, File* elf_file);
     61   ~ElfWriterMclinker();
     62 
     63   void Init();
     64   void AddOatInput(std::vector<uint8_t>& oat_contents);
     65   void AddMethodInputs(const std::vector<const DexFile*>& dex_files);
     66   void AddCompiledCodeInput(const CompiledCode& compiled_code);
     67   void AddRuntimeInputs(const std::string& android_root, bool is_host);
     68   bool Link();
     69   void FixupOatMethodOffsets(const std::vector<const DexFile*>& dex_files)
     70       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
     71   uint32_t FixupCompiledCodeOffset(ElfFile& elf_file,
     72                                    uint32_t oatdata_address,
     73                                    const CompiledCode& compiled_code);
     74 
     75   // Setup by Init()
     76   std::unique_ptr<mcld::LinkerConfig> linker_config_;
     77   std::unique_ptr<mcld::LinkerScript> linker_script_;
     78   std::unique_ptr<mcld::Module> module_;
     79   std::unique_ptr<mcld::IRBuilder> ir_builder_;
     80   std::unique_ptr<mcld::Linker> linker_;
     81 
     82   // Setup by AddOatInput()
     83   // TODO: ownership of oat_input_?
     84   mcld::Input* oat_input_;
     85 
     86   // Setup by AddCompiledCodeInput
     87   // set of symbols for already added mcld::Inputs
     88   SafeMap<const std::string*, const std::string*> added_symbols_;
     89 
     90   // Setup by FixupCompiledCodeOffset
     91   // map of symbol names to oatdata offset
     92   SafeMap<const std::string*, uint32_t> symbol_to_compiled_code_offset_;
     93 
     94   DISALLOW_IMPLICIT_CONSTRUCTORS(ElfWriterMclinker);
     95 };
     96 
     97 }  // namespace art
     98 
     99 #endif  // ART_COMPILER_ELF_WRITER_MCLINKER_H_
    100