compiler/oat_writer.h - platform/art - Gitiles

 /*
  * 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.
  */

 #ifndef ART_COMPILER_OAT_WRITER_H_
 #define ART_COMPILER_OAT_WRITER_H_

 #include <stdint.h>

 #include <cstddef>

 #include "driver/compiler_driver.h"
 #include "mem_map.h"
 #include "oat.h"
 #include "mirror/class.h"
 #include "safe_map.h"
 #include "UniquePtr.h"

 namespace art {

 class OutputStream;

 // OatHeader         variable length with count of D OatDexFiles
 //
 // OatDexFile[0]     one variable sized OatDexFile with offsets to Dex and OatClasses
 // OatDexFile[1]
 // ...
 // OatDexFile[D]
 //
 // Dex[0]            one variable sized DexFile for each OatDexFile.
 // Dex[1]            these are literal copies of the input .dex files.
 // ...
 // Dex[D]
 //
 // OatClass[0]       one variable sized OatClass for each of C DexFile::ClassDefs
 // OatClass[1]       contains OatClass entries with class status, offsets to code, etc.
 // ...
 // OatClass[C]
 //
 // padding           if necessary so that the following code will be page aligned
 //
 // CompiledMethod    one variable sized blob with the contents of each CompiledMethod
 // CompiledMethod
 // CompiledMethod
 // CompiledMethod
 // CompiledMethod
 // CompiledMethod
 // ...
 // CompiledMethod
 //
 class OatWriter {
  public:
   OatWriter(const std::vector<const DexFile*>& dex_files,
             uint32_t image_file_location_oat_checksum,
             uint32_t image_file_location_oat_begin,
             const std::string& image_file_location,
             const CompilerDriver* compiler) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);

   const OatHeader& GetOatHeader() const {
     return *oat_header_;
   }

   size_t GetSize() const {
     return size_;
   }

   bool Write(OutputStream& out);

   ~OatWriter();

  private:
   size_t InitOatHeader();
   size_t InitOatDexFiles(size_t offset);
   size_t InitDexFiles(size_t offset);
   size_t InitOatClasses(size_t offset);
   size_t InitOatCode(size_t offset)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
   size_t InitOatCodeDexFiles(size_t offset)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
   size_t InitOatCodeDexFile(size_t offset,
                             size_t& oat_class_index,
                             const DexFile& dex_file)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
   size_t InitOatCodeClassDef(size_t offset,
                              size_t oat_class_index, size_t class_def_index,
                              const DexFile& dex_file,
                              const DexFile::ClassDef& class_def)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
   size_t InitOatCodeMethod(size_t offset, size_t oat_class_index, size_t class_def_index,
                            size_t class_def_method_index, bool is_native, InvokeType type,
                            uint32_t method_idx, const DexFile*)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);

   bool WriteTables(OutputStream& out, const size_t file_offset);
   size_t WriteCode(OutputStream& out, const size_t file_offset);
   size_t WriteCodeDexFiles(OutputStream& out, const size_t file_offset, size_t relative_offset);
   size_t WriteCodeDexFile(OutputStream& out, const size_t file_offset, size_t relative_offset,
                           size_t& oat_class_index, const DexFile& dex_file);
   size_t WriteCodeClassDef(OutputStream& out, const size_t file_offset, size_t relative_offset,
                            size_t oat_class_index, const DexFile& dex_file,
                            const DexFile::ClassDef& class_def);
   size_t WriteCodeMethod(OutputStream& out, const size_t file_offset, size_t relative_offset,
                          size_t oat_class_index, size_t class_def_method_index, bool is_static,
                          uint32_t method_idx, const DexFile& dex_file);

   void ReportWriteFailure(const char* what, uint32_t method_idx, const DexFile& dex_file,
                           OutputStream& out) const;

   class OatDexFile {
    public:
     explicit OatDexFile(size_t offset, const DexFile& dex_file);
     size_t SizeOf() const;
     void UpdateChecksum(OatHeader& oat_header) const;
     bool Write(OatWriter* oat_writer, OutputStream& out, const size_t file_offset) const;

     // 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 uint8_t* dex_file_location_data_;
     uint32_t dex_file_location_checksum_;
     uint32_t dex_file_offset_;
     std::vector<uint32_t> methods_offsets_;

    private:
     DISALLOW_COPY_AND_ASSIGN(OatDexFile);
   };

   class OatClass {
    public:
     explicit OatClass(size_t offset, mirror::Class::Status status, uint32_t methods_count);
     size_t GetOatMethodOffsetsOffsetFromOatHeader(size_t class_def_method_index_) const;
     size_t GetOatMethodOffsetsOffsetFromOatClass(size_t class_def_method_index_) const;
     size_t SizeOf() const;
     void UpdateChecksum(OatHeader& oat_header) const;
     bool Write(OatWriter* oat_writer, OutputStream& out, const size_t file_offset) const;

     // Offset of start of OatClass from beginning of OatHeader. It is
     // used to validate file position when writing. For Portable, it
     // is also used to calculate the position of the OatMethodOffsets
     // so that code pointers within the OatMethodOffsets can be
     // patched to point to code in the Portable .o ELF objects.
     size_t offset_;

     // data to write
     mirror::Class::Status status_;
     std::vector<OatMethodOffsets> method_offsets_;

    private:
     DISALLOW_COPY_AND_ASSIGN(OatClass);
   };

   const CompilerDriver* const compiler_driver_;

   // note OatFile does not take ownership of the DexFiles
   const std::vector<const DexFile*>* dex_files_;

   // Size required for Oat data structures.
   size_t size_;

   // dependencies on the image.
   uint32_t image_file_location_oat_checksum_;
   uint32_t image_file_location_oat_begin_;
   std::string image_file_location_;

   // data to write
   OatHeader* oat_header_;
   std::vector<OatDexFile*> oat_dex_files_;
   std::vector<OatClass*> oat_classes_;
   UniquePtr<const std::vector<uint8_t> > interpreter_to_interpreter_bridge_;
   UniquePtr<const std::vector<uint8_t> > interpreter_to_compiled_code_bridge_;
   UniquePtr<const std::vector<uint8_t> > jni_dlsym_lookup_;
   UniquePtr<const std::vector<uint8_t> > portable_resolution_trampoline_;
   UniquePtr<const std::vector<uint8_t> > portable_to_interpreter_bridge_;
   UniquePtr<const std::vector<uint8_t> > quick_resolution_trampoline_;
   UniquePtr<const std::vector<uint8_t> > quick_to_interpreter_bridge_;

   // output stats
   uint32_t size_dex_file_alignment_;
   uint32_t size_executable_offset_alignment_;
   uint32_t size_oat_header_;
   uint32_t size_oat_header_image_file_location_;
   uint32_t size_dex_file_;
   uint32_t size_interpreter_to_interpreter_bridge_;
   uint32_t size_interpreter_to_compiled_code_bridge_;
   uint32_t size_jni_dlsym_lookup_;
   uint32_t size_portable_resolution_trampoline_;
   uint32_t size_portable_to_interpreter_bridge_;
   uint32_t size_quick_resolution_trampoline_;
   uint32_t size_quick_to_interpreter_bridge_;
   uint32_t size_trampoline_alignment_;
   uint32_t size_code_size_;
   uint32_t size_code_;
   uint32_t size_code_alignment_;
   uint32_t size_mapping_table_;
   uint32_t size_vmap_table_;
   uint32_t size_gc_map_;
   uint32_t size_oat_dex_file_location_size_;
   uint32_t size_oat_dex_file_location_data_;
   uint32_t size_oat_dex_file_location_checksum_;
   uint32_t size_oat_dex_file_offset_;
   uint32_t size_oat_dex_file_methods_offsets_;
   uint32_t size_oat_class_status_;
   uint32_t size_oat_class_method_offsets_;

   template <class T> struct MapCompare {
    public:
     bool operator() (const T* const &a, const T* const &b) const {
       return *a < *b;
     }
   };

   // code mappings for deduplication
   SafeMap<const std::vector<uint8_t>*, uint32_t, MapCompare<std::vector<uint8_t> > > code_offsets_;
   SafeMap<const std::vector<uint8_t>*, uint32_t, MapCompare<std::vector<uint8_t> > > vmap_table_offsets_;
   SafeMap<const std::vector<uint8_t>*, uint32_t, MapCompare<std::vector<uint8_t> > > mapping_table_offsets_;
   SafeMap<const std::vector<uint8_t>*, uint32_t, MapCompare<std::vector<uint8_t> > > gc_map_offsets_;

   DISALLOW_COPY_AND_ASSIGN(OatWriter);
 };

 }  // namespace art

 #endif  // ART_COMPILER_OAT_WRITER_H_
	/*
	* 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.
	*/

	#ifndef ART_COMPILER_OAT_WRITER_H_
	#define ART_COMPILER_OAT_WRITER_H_

	#include <stdint.h>

	#include <cstddef>

	#include "driver/compiler_driver.h"
	#include "mem_map.h"
	#include "oat.h"
	#include "mirror/class.h"
	#include "safe_map.h"
	#include "UniquePtr.h"

	namespace art {

	class OutputStream;

	// OatHeader variable length with count of D OatDexFiles
	//
	// OatDexFile[0] one variable sized OatDexFile with offsets to Dex and OatClasses
	// OatDexFile[1]
	// ...
	// OatDexFile[D]
	//
	// Dex[0] one variable sized DexFile for each OatDexFile.
	// Dex[1] these are literal copies of the input .dex files.
	// ...
	// Dex[D]
	//
	// OatClass[0] one variable sized OatClass for each of C DexFile::ClassDefs
	// OatClass[1] contains OatClass entries with class status, offsets to code, etc.
	// ...
	// OatClass[C]
	//
	// padding if necessary so that the following code will be page aligned
	//
	// CompiledMethod one variable sized blob with the contents of each CompiledMethod
	// CompiledMethod
	// CompiledMethod
	// CompiledMethod
	// CompiledMethod
	// CompiledMethod
	// ...
	// CompiledMethod
	//
	class OatWriter {
	public:
	OatWriter(const std::vector<const DexFile*>& dex_files,
	uint32_t image_file_location_oat_checksum,
	uint32_t image_file_location_oat_begin,
	const std::string& image_file_location,
	const CompilerDriver* compiler) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);

	const OatHeader& GetOatHeader() const {
	return *oat_header_;
	}

	size_t GetSize() const {
	return size_;
	}

	bool Write(OutputStream& out);

	~OatWriter();

	private:
	size_t InitOatHeader();
	size_t InitOatDexFiles(size_t offset);
	size_t InitDexFiles(size_t offset);
	size_t InitOatClasses(size_t offset);
	size_t InitOatCode(size_t offset)
	SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
	size_t InitOatCodeDexFiles(size_t offset)
	SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
	size_t InitOatCodeDexFile(size_t offset,
	size_t& oat_class_index,
	const DexFile& dex_file)
	SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
	size_t InitOatCodeClassDef(size_t offset,
	size_t oat_class_index, size_t class_def_index,
	const DexFile& dex_file,
	const DexFile::ClassDef& class_def)
	SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
	size_t InitOatCodeMethod(size_t offset, size_t oat_class_index, size_t class_def_index,
	size_t class_def_method_index, bool is_native, InvokeType type,
	uint32_t method_idx, const DexFile*)
	SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);

	bool WriteTables(OutputStream& out, const size_t file_offset);
	size_t WriteCode(OutputStream& out, const size_t file_offset);
	size_t WriteCodeDexFiles(OutputStream& out, const size_t file_offset, size_t relative_offset);
	size_t WriteCodeDexFile(OutputStream& out, const size_t file_offset, size_t relative_offset,
	size_t& oat_class_index, const DexFile& dex_file);
	size_t WriteCodeClassDef(OutputStream& out, const size_t file_offset, size_t relative_offset,
	size_t oat_class_index, const DexFile& dex_file,
	const DexFile::ClassDef& class_def);
	size_t WriteCodeMethod(OutputStream& out, const size_t file_offset, size_t relative_offset,
	size_t oat_class_index, size_t class_def_method_index, bool is_static,
	uint32_t method_idx, const DexFile& dex_file);

	void ReportWriteFailure(const char* what, uint32_t method_idx, const DexFile& dex_file,
	OutputStream& out) const;

	class OatDexFile {
	public:
	explicit OatDexFile(size_t offset, const DexFile& dex_file);
	size_t SizeOf() const;
	void UpdateChecksum(OatHeader& oat_header) const;
	bool Write(OatWriter* oat_writer, OutputStream& out, const size_t file_offset) const;

	// 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 uint8_t* dex_file_location_data_;
	uint32_t dex_file_location_checksum_;
	uint32_t dex_file_offset_;
	std::vector<uint32_t> methods_offsets_;

	private:
	DISALLOW_COPY_AND_ASSIGN(OatDexFile);
	};

	class OatClass {
	public:
	explicit OatClass(size_t offset, mirror::Class::Status status, uint32_t methods_count);
	size_t GetOatMethodOffsetsOffsetFromOatHeader(size_t class_def_method_index_) const;
	size_t GetOatMethodOffsetsOffsetFromOatClass(size_t class_def_method_index_) const;
	size_t SizeOf() const;
	void UpdateChecksum(OatHeader& oat_header) const;
	bool Write(OatWriter* oat_writer, OutputStream& out, const size_t file_offset) const;

	// Offset of start of OatClass from beginning of OatHeader. It is
	// used to validate file position when writing. For Portable, it
	// is also used to calculate the position of the OatMethodOffsets
	// so that code pointers within the OatMethodOffsets can be
	// patched to point to code in the Portable .o ELF objects.
	size_t offset_;

	// data to write
	mirror::Class::Status status_;
	std::vector<OatMethodOffsets> method_offsets_;

	private:
	DISALLOW_COPY_AND_ASSIGN(OatClass);
	};

	const CompilerDriver* const compiler_driver_;

	// note OatFile does not take ownership of the DexFiles
	const std::vector<const DexFile> dex_files_;

	// Size required for Oat data structures.
	size_t size_;

	// dependencies on the image.
	uint32_t image_file_location_oat_checksum_;
	uint32_t image_file_location_oat_begin_;
	std::string image_file_location_;

	// data to write
	OatHeader* oat_header_;
	std::vector<OatDexFile*> oat_dex_files_;
	std::vector<OatClass*> oat_classes_;
	UniquePtr<const std::vector<uint8_t> > interpreter_to_interpreter_bridge_;
	UniquePtr<const std::vector<uint8_t> > interpreter_to_compiled_code_bridge_;
	UniquePtr<const std::vector<uint8_t> > jni_dlsym_lookup_;
	UniquePtr<const std::vector<uint8_t> > portable_resolution_trampoline_;
	UniquePtr<const std::vector<uint8_t> > portable_to_interpreter_bridge_;
	UniquePtr<const std::vector<uint8_t> > quick_resolution_trampoline_;
	UniquePtr<const std::vector<uint8_t> > quick_to_interpreter_bridge_;

	// output stats
	uint32_t size_dex_file_alignment_;
	uint32_t size_executable_offset_alignment_;
	uint32_t size_oat_header_;
	uint32_t size_oat_header_image_file_location_;
	uint32_t size_dex_file_;
	uint32_t size_interpreter_to_interpreter_bridge_;
	uint32_t size_interpreter_to_compiled_code_bridge_;
	uint32_t size_jni_dlsym_lookup_;
	uint32_t size_portable_resolution_trampoline_;
	uint32_t size_portable_to_interpreter_bridge_;
	uint32_t size_quick_resolution_trampoline_;
	uint32_t size_quick_to_interpreter_bridge_;
	uint32_t size_trampoline_alignment_;
	uint32_t size_code_size_;
	uint32_t size_code_;
	uint32_t size_code_alignment_;
	uint32_t size_mapping_table_;
	uint32_t size_vmap_table_;
	uint32_t size_gc_map_;
	uint32_t size_oat_dex_file_location_size_;
	uint32_t size_oat_dex_file_location_data_;
	uint32_t size_oat_dex_file_location_checksum_;
	uint32_t size_oat_dex_file_offset_;
	uint32_t size_oat_dex_file_methods_offsets_;
	uint32_t size_oat_class_status_;
	uint32_t size_oat_class_method_offsets_;

	template <class T> struct MapCompare {
	public:
	bool operator() (const T* const &a, const T* const &b) const {
	return a < b;
	}
	};

	// code mappings for deduplication
	SafeMap<const std::vector<uint8_t>*, uint32_t, MapCompare<std::vector<uint8_t> > > code_offsets_;
	SafeMap<const std::vector<uint8_t>*, uint32_t, MapCompare<std::vector<uint8_t> > > vmap_table_offsets_;
	SafeMap<const std::vector<uint8_t>*, uint32_t, MapCompare<std::vector<uint8_t> > > mapping_table_offsets_;
	SafeMap<const std::vector<uint8_t>*, uint32_t, MapCompare<std::vector<uint8_t> > > gc_map_offsets_;

	DISALLOW_COPY_AND_ASSIGN(OatWriter);
	};

	} // namespace art

	#endif // ART_COMPILER_OAT_WRITER_H_