src/oatdump.cc - platform/art - Gitiles

 // Copyright 2011 Google Inc. All Rights Reserved.

 #include <stdio.h>
 #include <stdlib.h>

 #include <fstream>
 #include <iostream>
 #include <string>
 #include <vector>

 #include "class_linker.h"
 #include "file.h"
 #include "image.h"
 #include "os.h"
 #include "runtime.h"
 #include "space.h"
 #include "stringpiece.h"
 #include "unordered_map.h"

 namespace art {

 static void usage() {
   fprintf(stderr,
           "Usage: oatdump [options] ...\n"
           "    Example: oatdump --image=$ANDROID_PRODUCT_OUT/data/art-cache/boot.art --host-prefix=$ANDROID_PRODUCT_OUT\n"
           "    Example: adb shell oatdump --image=/data/art-cache/boot.art\n"
           "\n");
   fprintf(stderr,
           "  --oat=<file.oat>: specifies an input oat filename.\n"
           "      Example: --image=/data/art-cache/boot.oat\n"
           "\n");
   fprintf(stderr,
           "  --image=<file.art>: specifies an input image filename.\n"
           "      Example: --image=/data/art-cache/boot.art\n"
           "\n");
   fprintf(stderr,
           "  --boot-image=<file.art>: provide the image file for the boot class path.\n"
           "      Example: --boot-image=/data/art-cache/boot.art\n"
           "\n");
   fprintf(stderr,
           "  --host-prefix may be used to translate host paths to target paths during\n"
           "      cross compilation.\n"
           "      Example: --host-prefix=out/target/product/crespo\n"
           "\n");
   fprintf(stderr,
           "  --output=<file> may be used to send the output to a file.\n"
           "      Example: --output=/tmp/oatdump.txt\n"
           "\n");
   exit(EXIT_FAILURE);
 }

 const char* image_roots_descriptions_[] = {
   "kJniStubArray",
   "kAbstractMethodErrorStubArray",
   "kInstanceResolutionStubArray",
   "kStaticResolutionStubArray",
   "kUnknownMethodResolutionStubArray",
   "kCalleeSaveMethod",
   "kRefsOnlySaveMethod",
   "kRefsAndArgsSaveMethod",
   "kOatLocation",
   "kDexCaches",
   "kClassRoots",
 };

 class OatDump {
  public:
   static void Dump(const std::string& oat_filename,
                    const std::string& host_prefix,
                    std::ostream& os,
                    const OatFile& oat_file) {
     const OatHeader& oat_header = oat_file.GetOatHeader();

     os << "MAGIC:\n";
     os << oat_header.GetMagic() << "\n\n";

     os << "CHECKSUM:\n";
     os << StringPrintf("%08x\n\n", oat_header.GetChecksum());

     os << "DEX FILE COUNT:\n";
     os << oat_header.GetDexFileCount() << "\n\n";

     os << "EXECUTABLE OFFSET:\n";
     os << StringPrintf("%08x\n\n", oat_header.GetExecutableOffset());

     os << "BASE:\n";
     os << reinterpret_cast<const void*>(oat_file.GetBase()) << "\n\n";

     os << "LIMIT:\n";
     os << reinterpret_cast<const void*>(oat_file.GetLimit()) << "\n\n";

     os << std::flush;

     std::vector<const OatFile::OatDexFile*> oat_dex_files = oat_file.GetOatDexFiles() ;
     for (size_t i = 0; i < oat_dex_files.size(); i++) {
       const OatFile::OatDexFile* oat_dex_file = oat_dex_files[i];
       CHECK(oat_dex_file != NULL);
       DumpOatDexFile(host_prefix, os, oat_file, *oat_dex_file);
     }
   }

  private:
   static void DumpOatDexFile(const std::string& host_prefix,
                              std::ostream& os,
                              const OatFile& oat_file,
                              const OatFile::OatDexFile& oat_dex_file) {
     os << "OAT DEX FILE:\n";
     std::string dex_file_location = oat_dex_file.GetDexFileLocation();
     os << "location: " << dex_file_location;
     if (!host_prefix.empty()) {
       dex_file_location = host_prefix + dex_file_location;
       os << " (" << dex_file_location << ")";
     }
     os << "\n";
     os << StringPrintf("checksum: %08x\n", oat_dex_file.GetDexFileChecksum());
     const DexFile* dex_file = DexFile::Open(dex_file_location, "");
     if (dex_file == NULL) {
       os << "NOT FOUND\n\n";
       return;
     }
     for (size_t class_def_index = 0; class_def_index < dex_file->NumClassDefs(); class_def_index++) {
       const DexFile::ClassDef& class_def = dex_file->GetClassDef(class_def_index);
       const char* descriptor = dex_file->GetClassDescriptor(class_def);
       os << StringPrintf("%d: %s (type_idx=%d)\n", class_def_index, descriptor, class_def.class_idx_);
       UniquePtr<const OatFile::OatClass> oat_class(oat_dex_file.GetOatClass(class_def_index));
       CHECK(oat_class.get() != NULL);
       DumpOatClass(os, oat_file, *oat_class.get(), *dex_file, class_def);
     }

     os << std::flush;
   }

   static void DumpOatClass(std::ostream& os,
                            const OatFile& oat_file,
                            const OatFile::OatClass& oat_class,
                            const DexFile& dex_file,
                            const DexFile::ClassDef& class_def) {
     const byte* class_data = dex_file.GetClassData(class_def);
     DexFile::ClassDataHeader header = dex_file.ReadClassDataHeader(&class_data);
     size_t num_static_fields = header.static_fields_size_;
     size_t num_instance_fields = header.instance_fields_size_;
     size_t num_direct_methods = header.direct_methods_size_;
     size_t num_virtual_methods = header.virtual_methods_size_;
     uint32_t method_index = 0;

     // just skipping through the fields to advance class_data
     if (num_static_fields != 0) {
       uint32_t last_idx = 0;
       for (size_t i = 0; i < num_static_fields; ++i) {
         DexFile::Field dex_field;
         dex_file.dexReadClassDataField(&class_data, &dex_field, &last_idx);
       }
     }
     if (num_instance_fields != 0) {
       uint32_t last_idx = 0;
       for (size_t i = 0; i < num_instance_fields; ++i) {
         DexFile::Field dex_field;
         dex_file.dexReadClassDataField(&class_data, &dex_field, &last_idx);
       }
     }

     if (num_direct_methods != 0) {
       uint32_t last_idx = 0;
       for (size_t i = 0; i < num_direct_methods; ++i, method_index++) {
         DexFile::Method dex_method;
         dex_file.dexReadClassDataMethod(&class_data, &dex_method, &last_idx);
         const OatFile::OatMethod oat_method = oat_class.GetOatMethod(method_index);
         DumpOatMethod(os, method_index, oat_file, oat_method, dex_file, dex_method);
       }
     }
     if (num_virtual_methods != 0) {
       uint32_t last_idx = 0;
       for (size_t i = 0; i < num_virtual_methods; ++i, method_index++) {
         DexFile::Method dex_method;
         dex_file.dexReadClassDataMethod(&class_data, &dex_method, &last_idx);
         const OatFile::OatMethod oat_method = oat_class.GetOatMethod(method_index);
         DumpOatMethod(os, method_index, oat_file, oat_method, dex_file, dex_method);
       }
     }
     os << std::flush;
   }
   static void DumpOatMethod(std::ostream& os,
                             uint32_t method_index,
                             const OatFile& oat_file,
                             const OatFile::OatMethod& oat_method,
                             const DexFile& dex_file,
                             const DexFile::Method& dex_method) {
     const DexFile::MethodId& method_id = dex_file.GetMethodId(dex_method.method_idx_);
     const char* name = dex_file.GetMethodName(method_id);
     std::string signature = dex_file.GetMethodSignature(method_id);
     os << StringPrintf("\t%d: %s %s (method_idx=%d)\n",
                        method_index, name, signature.c_str(), dex_method.method_idx_);
     os << StringPrintf("\t\tcode: %p (offset=%08x)\n",
                        oat_method.code_,
                        reinterpret_cast<const byte*>(oat_method.code_) - oat_file.GetBase());
     os << StringPrintf("\t\tframe_size_in_bytes: %d\n",
                        oat_method.frame_size_in_bytes_);
     os << StringPrintf("\t\treturn_pc_offset_in_bytes: %d\n",
                        oat_method.return_pc_offset_in_bytes_);
     os << StringPrintf("\t\tcore_spill_mask: %08x\n",
                        oat_method.core_spill_mask_);
     os << StringPrintf("\t\tfp_spill_mask: %08x\n",
                        oat_method.fp_spill_mask_);
     os << StringPrintf("\t\tmapping_table: %p (offset=%08x)\n",
                        oat_method.mapping_table_,
                        reinterpret_cast<const byte*>(oat_method.mapping_table_) - oat_file.GetBase());
     os << StringPrintf("\t\tvmap_table: %p (offset=%08x)\n",
                        oat_method.vmap_table_,
                        reinterpret_cast<const byte*>(oat_method.vmap_table_) - oat_file.GetBase());
     os << StringPrintf("\t\tinvoke_stub: %p (offset=%08x)\n",
                        oat_method.invoke_stub_,
                        reinterpret_cast<const byte*>(oat_method.invoke_stub_) - oat_file.GetBase());
   }
 };

 class ImageDump {
  public:
   static void Dump(const std::string& image_filename,
                    const std::string& host_prefix,
                    std::ostream& os,
                    Space& image_space,
                    const ImageHeader& image_header) {
     os << "MAGIC:\n";
     os << image_header.GetMagic() << "\n\n";

     os << "IMAGE BASE:\n";
     os << reinterpret_cast<void*>(image_header.GetImageBaseAddr()) << "\n\n";

     os << "OAT CHECKSUM:\n";
     os << StringPrintf("%08x\n\n", image_header.GetOatChecksum());

     os << "OAT BASE:\n";
     os << reinterpret_cast<void*>(image_header.GetOatBaseAddr()) << "\n\n";

     os << "OAT LIMIT:\n";
     os << reinterpret_cast<void*>(image_header.GetOatLimitAddr()) << "\n\n";

     os << "ROOTS:\n";
     os << reinterpret_cast<void*>(image_header.GetImageRoots()) << "\n";
     CHECK_EQ(arraysize(image_roots_descriptions_), size_t(ImageHeader::kImageRootsMax));
     for (int i = 0; i < ImageHeader::kImageRootsMax; i++) {
       ImageHeader::ImageRoot image_root = static_cast<ImageHeader::ImageRoot>(i);
       const char* image_root_description = image_roots_descriptions_[i];
       Object* image_root_object = image_header.GetImageRoot(image_root);
       os << StringPrintf("%s: %p\n", image_root_description, image_root_object);
       if (image_root_object->IsObjectArray()) {
         // TODO: replace down_cast with AsObjectArray (g++ currently has a problem with this)
         ObjectArray<Object>* image_root_object_array
             = down_cast<ObjectArray<Object>*>(image_root_object);
         //  = image_root_object->AsObjectArray<Object>();
         for (int i = 0; i < image_root_object_array->GetLength(); i++) {
             os << StringPrintf("\t%d: %p\n", i, image_root_object_array->Get(i));
         }
       }
     }
     os << "\n";

     os << "OBJECTS:\n" << std::flush;
     ImageDump state(image_space, os);
     HeapBitmap* heap_bitmap = Heap::GetLiveBits();
     DCHECK(heap_bitmap != NULL);
     heap_bitmap->Walk(ImageDump::Callback, &state);
     os << "\n";

     os << "STATS:\n" << std::flush;
     UniquePtr<File> file(OS::OpenFile(image_filename.c_str(), false));
     state.stats_.file_bytes = file->Length();
     size_t header_bytes = sizeof(ImageHeader);
     state.stats_.header_bytes = header_bytes;
     size_t alignment_bytes = RoundUp(header_bytes, kObjectAlignment) - header_bytes;
     state.stats_.alignment_bytes += alignment_bytes;
     state.stats_.Dump(os);
     os << "\n";

     os << std::flush;

     os << "OAT LOCATION:\n" << std::flush;
     Object* oat_location_object = image_header.GetImageRoot(ImageHeader::kOatLocation);
     std::string oat_location = oat_location_object->AsString()->ToModifiedUtf8();
     ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
     os << oat_location;
     if (!host_prefix.empty()) {
       oat_location = host_prefix + oat_location;
       os << " (" << oat_location << ")";
     }
     os << "\n";
     const OatFile* oat_file = class_linker->FindOatFile(oat_location);
     if (oat_file == NULL) {
       os << "NOT FOUND\n";
       os << std::flush;
       return;
     }
     os << "\n";
     os << std::flush;

     OatDump::Dump(oat_location, host_prefix, os, *oat_file);
   }

  private:

   ImageDump(const Space& dump_space, std::ostream& os) : dump_space_(dump_space), os_(os) {}

   ~ImageDump() {}

   static void Callback(Object* obj, void* arg) {
     DCHECK(obj != NULL);
     DCHECK(arg != NULL);
     ImageDump* state = reinterpret_cast<ImageDump*>(arg);
     if (!state->InDumpSpace(obj)) {
       return;
     }

     size_t object_bytes = obj->SizeOf();
     size_t alignment_bytes = RoundUp(object_bytes, kObjectAlignment) - object_bytes;
     state->stats_.object_bytes += object_bytes;
     state->stats_.alignment_bytes += alignment_bytes;

     std::string summary;
     StringAppendF(&summary, "%p: ", obj);
     if (obj->IsClass()) {
       Class* klass = obj->AsClass();
       StringAppendF(&summary, "CLASS %s", klass->GetDescriptor()->ToModifiedUtf8().c_str());
       std::ostringstream ss;
       ss << " (" << klass->GetStatus() << ")";
       summary += ss.str();
     } else if (obj->IsMethod()) {
       Method* method = obj->AsMethod();
       StringAppendF(&summary, "METHOD %s", PrettyMethod(method).c_str());
     } else if (obj->IsField()) {
       Field* field = obj->AsField();
       StringAppendF(&summary, "FIELD %s", PrettyField(field).c_str());
     } else if (obj->IsArrayInstance()) {
       StringAppendF(&summary, "ARRAY %d", obj->AsArray()->GetLength());
     } else if (obj->IsString()) {
       StringAppendF(&summary, "STRING %s", obj->AsString()->ToModifiedUtf8().c_str());
     } else {
       StringAppendF(&summary, "OBJECT");
     }
     StringAppendF(&summary, "\n");
     std::string descriptor = obj->GetClass()->GetDescriptor()->ToModifiedUtf8();
     StringAppendF(&summary, "\tclass %p: %s\n", obj->GetClass(), descriptor.c_str());
     state->stats_.descriptor_to_bytes[descriptor] += object_bytes;
     state->stats_.descriptor_to_count[descriptor] += 1;
     // StringAppendF(&summary, "\tsize %d (alignment padding %d)\n",
     //               object_bytes, RoundUp(object_bytes, kObjectAlignment) - object_bytes);
     if (obj->IsMethod()) {
       Method* method = obj->AsMethod();
       if (!method->IsCalleeSaveMethod()) {
         const int8_t* code =reinterpret_cast<const int8_t*>(method->GetCode());
         StringAppendF(&summary, "\tCODE     %p\n", code);

         const Method::InvokeStub* invoke_stub = method->GetInvokeStub();
         StringAppendF(&summary, "\tJNI STUB %p\n", invoke_stub);
       }
       if (method->IsNative()) {
         if (method->IsRegistered()) {
           StringAppendF(&summary, "\tNATIVE REGISTERED %p\n", method->GetNativeMethod());
         } else {
           StringAppendF(&summary, "\tNATIVE UNREGISTERED\n");
         }
         DCHECK(method->GetGcMap() == NULL) << PrettyMethod(method);
         DCHECK(method->GetMappingTable() == NULL) << PrettyMethod(method);
       } else if (method->IsAbstract()) {
         StringAppendF(&summary, "\tABSTRACT\n");
         DCHECK(method->GetGcMap() == NULL) << PrettyMethod(method);
         DCHECK(method->GetMappingTable() == NULL) << PrettyMethod(method);
       } else if (method->IsCalleeSaveMethod()) {
         StringAppendF(&summary, "\tCALLEE SAVE METHOD\n");
         DCHECK(method->GetGcMap() == NULL) << PrettyMethod(method);
         DCHECK(method->GetMappingTable() == NULL) << PrettyMethod(method);
       } else {
         size_t register_map_bytes = method->GetGcMap()->SizeOf();
         state->stats_.register_map_bytes += register_map_bytes;

         if (method->GetMappingTable() != NULL) {
           size_t pc_mapping_table_bytes = method->GetMappingTableLength();
           state->stats_.pc_mapping_table_bytes += pc_mapping_table_bytes;
         }

         ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
         class DexCache* dex_cache = method->GetDeclaringClass()->GetDexCache();
         const DexFile& dex_file = class_linker->FindDexFile(dex_cache);
         const DexFile::CodeItem* code_item = dex_file.GetCodeItem(method->GetCodeItemOffset());
         size_t dex_instruction_bytes = code_item->insns_size_in_code_units_ * 2;
         state->stats_.dex_instruction_bytes += dex_instruction_bytes;
       }
     }
     state->os_ << summary << std::flush;
   }

   bool InDumpSpace(const Object* object) {
     const byte* o = reinterpret_cast<const byte*>(object);
     return (o >= dump_space_.GetBase() && o < dump_space_.GetLimit());
   }

  public:
   struct Stats {
     size_t file_bytes;

     size_t header_bytes;
     size_t object_bytes;
     size_t alignment_bytes;

     size_t managed_code_bytes;
     size_t managed_to_native_code_bytes;
     size_t native_to_managed_code_bytes;

     size_t register_map_bytes;
     size_t pc_mapping_table_bytes;

     size_t dex_instruction_bytes;

     Stats()
         : file_bytes(0),
           header_bytes(0),
           object_bytes(0),
           alignment_bytes(0),
           managed_code_bytes(0),
           managed_to_native_code_bytes(0),
           native_to_managed_code_bytes(0),
           register_map_bytes(0),
           pc_mapping_table_bytes(0),
           dex_instruction_bytes(0) {}

     typedef std::tr1::unordered_map<std::string,size_t> TableBytes;
     TableBytes descriptor_to_bytes;

     typedef std::tr1::unordered_map<std::string,size_t> TableCount;
     TableCount descriptor_to_count;

     double PercentOfFileBytes(size_t size) {
       return (static_cast<double>(size) / static_cast<double>(file_bytes)) * 100;
     }

     double PercentOfObjectBytes(size_t size) {
       return (static_cast<double>(size) / static_cast<double>(object_bytes)) * 100;
     }

     void Dump(std::ostream& os) {
       os << StringPrintf("\tfile_bytes = %d\n", file_bytes);
       os << "\n";

       os << "\tfile_bytes = header_bytes + object_bytes + alignment_bytes\n";
       os << StringPrintf("\theader_bytes    = %10d (%2.0f%% of file_bytes)\n",
                          header_bytes, PercentOfFileBytes(header_bytes));
       os << StringPrintf("\tobject_bytes    = %10d (%2.0f%% of file_bytes)\n",
                          object_bytes, PercentOfFileBytes(object_bytes));
       os << StringPrintf("\talignment_bytes = %10d (%2.0f%% of file_bytes)\n",
                          alignment_bytes, PercentOfFileBytes(alignment_bytes));
       os << "\n";
       os << std::flush;
       CHECK_EQ(file_bytes, header_bytes + object_bytes + alignment_bytes);

       os << "\tobject_bytes = sum of descriptor_to_bytes values below:\n";
       size_t object_bytes_total = 0;
       typedef TableBytes::const_iterator It;  // TODO: C++0x auto
       for (It it = descriptor_to_bytes.begin(), end = descriptor_to_bytes.end(); it != end; ++it) {
         const std::string& descriptor = it->first;
         size_t bytes = it->second;
         size_t count = descriptor_to_count[descriptor];
         double average = static_cast<double>(bytes) / static_cast<double>(count);
         double percent = PercentOfObjectBytes(bytes);
         os << StringPrintf("\t%32s %8d bytes %6d instances "
                            "(%3.0f bytes/instance) %2.0f%% of object_bytes\n",
                            descriptor.c_str(), bytes, count,
                            average, percent);

         object_bytes_total += bytes;
       }
       os << "\n";
       os << std::flush;
       CHECK_EQ(object_bytes, object_bytes_total);

       os << StringPrintf("\tmanaged_code_bytes           = %8d (%2.0f%% of object_bytes)\n",
                          managed_code_bytes, PercentOfObjectBytes(managed_code_bytes));
       os << StringPrintf("\tmanaged_to_native_code_bytes = %8d (%2.0f%% of object_bytes)\n",
                          managed_to_native_code_bytes,
                          PercentOfObjectBytes(managed_to_native_code_bytes));
       os << StringPrintf("\tnative_to_managed_code_bytes = %8d (%2.0f%% of object_bytes)\n",
                          native_to_managed_code_bytes,
                          PercentOfObjectBytes(native_to_managed_code_bytes));
       os << "\n";
       os << std::flush;

       os << StringPrintf("\tregister_map_bytes     = %7d (%2.0f%% of object_bytes)\n",
                          register_map_bytes, PercentOfObjectBytes(register_map_bytes));
       os << StringPrintf("\tpc_mapping_table_bytes = %7d (%2.0f%% of object_bytes)\n",
                          pc_mapping_table_bytes, PercentOfObjectBytes(pc_mapping_table_bytes));
       os << "\n";
       os << std::flush;

       os << StringPrintf("\tdex_instruction_bytes = %d\n", dex_instruction_bytes);
       os << StringPrintf("\tmanaged_code_bytes expansion = %.2f\n",
                          static_cast<double>(managed_code_bytes)
                          / static_cast<double>(dex_instruction_bytes));
       os << "\n";
       os << std::flush;
     }
   } stats_;

  private:
   const Space& dump_space_;
   std::ostream& os_;

   DISALLOW_COPY_AND_ASSIGN(ImageDump);
 };

 int oatdump(int argc, char** argv) {
   // Skip over argv[0].
   argv++;
   argc--;

   if (argc == 0) {
     fprintf(stderr, "No arguments specified\n");
     usage();
   }

   const char* oat_filename = NULL;
   const char* image_filename = NULL;
   const char* boot_image_filename = NULL;
   std::string host_prefix;
   std::ostream* os = &std::cout;
   UniquePtr<std::ofstream> out;

   for (int i = 0; i < argc; i++) {
     const StringPiece option(argv[i]);
     if (option.starts_with("--oat=")) {
       oat_filename = option.substr(strlen("--oat=")).data();
     } else if (option.starts_with("--image=")) {
       image_filename = option.substr(strlen("--image=")).data();
     } else if (option.starts_with("--boot-image=")) {
       boot_image_filename = option.substr(strlen("--boot-image=")).data();
     } else if (option.starts_with("--host-prefix=")) {
       host_prefix = option.substr(strlen("--host-prefix=")).data();
     } else if (option.starts_with("--output=")) {
       const char* filename = option.substr(strlen("--output=")).data();
       out.reset(new std::ofstream(filename));
       if (!out->good()) {
         fprintf(stderr, "Failed to open output filename %s\n", filename);
         usage();
       }
       os = out.get();
     } else {
       fprintf(stderr, "Unknown argument %s\n", option.data());
       usage();
     }
   }

   if (image_filename == NULL && oat_filename == NULL) {
     fprintf(stderr, "Either --image or --oat must be specified\n");
     return EXIT_FAILURE;
   }

   if (image_filename != NULL && oat_filename != NULL) {
     fprintf(stderr, "Either --image or --oat must be specified but not both\n");
     return EXIT_FAILURE;
   }

   if (oat_filename != NULL) {
     const OatFile* oat_file = OatFile::Open(oat_filename, "", NULL);
     if (oat_file == NULL) {
       fprintf(stderr, "Failed to open oat file from %s\n", oat_filename);
       return EXIT_FAILURE;
     }
     OatDump::Dump(oat_filename, host_prefix, *os, *oat_file);
     return EXIT_SUCCESS;
   }

   Runtime::Options options;
   std::string image_option;
   std::string oat_option;
   std::string boot_image_option;
   std::string boot_oat_option;
   if (boot_image_filename != NULL) {
     boot_image_option += "-Ximage:";
     boot_image_option += boot_image_filename;
     options.push_back(std::make_pair(boot_image_option.c_str(), reinterpret_cast<void*>(NULL)));
   }
   if (image_filename != NULL) {
     image_option += "-Ximage:";
     image_option += image_filename;
     options.push_back(std::make_pair(image_option.c_str(), reinterpret_cast<void*>(NULL)));
   }

   if (!host_prefix.empty()) {
     options.push_back(std::make_pair("host-prefix", host_prefix.c_str()));
   }

   UniquePtr<Runtime> runtime(Runtime::Create(options, false));
   if (runtime.get() == NULL) {
     fprintf(stderr, "Failed to create runtime\n");
     return EXIT_FAILURE;
   }

   Space* image_space = Heap::GetSpaces()[Heap::GetSpaces().size()-2];
   CHECK(image_space != NULL);
   const ImageHeader& image_header = image_space->GetImageHeader();
   if (!image_header.IsValid()) {
     fprintf(stderr, "Invalid image header %s\n", image_filename);
     return EXIT_FAILURE;
   }
   ImageDump::Dump(image_filename, host_prefix, *os, *image_space, image_header);
   return EXIT_SUCCESS;
 }

 } // namespace art

 int main(int argc, char** argv) {
   return art::oatdump(argc, argv);
 }
	// Copyright 2011 Google Inc. All Rights Reserved.

	#include <stdio.h>
	#include <stdlib.h>

	#include <fstream>
	#include <iostream>
	#include <string>
	#include <vector>

	#include "class_linker.h"
	#include "file.h"
	#include "image.h"
	#include "os.h"
	#include "runtime.h"
	#include "space.h"
	#include "stringpiece.h"
	#include "unordered_map.h"

	namespace art {

	static void usage() {
	fprintf(stderr,
	"Usage: oatdump [options] ...\n"
	" Example: oatdump --image=$ANDROID_PRODUCT_OUT/data/art-cache/boot.art --host-prefix=$ANDROID_PRODUCT_OUT\n"
	" Example: adb shell oatdump --image=/data/art-cache/boot.art\n"
	"\n");
	fprintf(stderr,
	" --oat=<file.oat>: specifies an input oat filename.\n"
	" Example: --image=/data/art-cache/boot.oat\n"
	"\n");
	fprintf(stderr,
	" --image=<file.art>: specifies an input image filename.\n"
	" Example: --image=/data/art-cache/boot.art\n"
	"\n");
	fprintf(stderr,
	" --boot-image=<file.art>: provide the image file for the boot class path.\n"
	" Example: --boot-image=/data/art-cache/boot.art\n"
	"\n");
	fprintf(stderr,
	" --host-prefix may be used to translate host paths to target paths during\n"
	" cross compilation.\n"
	" Example: --host-prefix=out/target/product/crespo\n"
	"\n");
	fprintf(stderr,
	" --output=<file> may be used to send the output to a file.\n"
	" Example: --output=/tmp/oatdump.txt\n"
	"\n");
	exit(EXIT_FAILURE);
	}

	const char* image_roots_descriptions_[] = {
	"kJniStubArray",
	"kAbstractMethodErrorStubArray",
	"kInstanceResolutionStubArray",
	"kStaticResolutionStubArray",
	"kUnknownMethodResolutionStubArray",
	"kCalleeSaveMethod",
	"kRefsOnlySaveMethod",
	"kRefsAndArgsSaveMethod",
	"kOatLocation",
	"kDexCaches",
	"kClassRoots",
	};

	class OatDump {
	public:
	static void Dump(const std::string& oat_filename,
	const std::string& host_prefix,
	std::ostream& os,
	const OatFile& oat_file) {
	const OatHeader& oat_header = oat_file.GetOatHeader();

	os << "MAGIC:\n";
	os << oat_header.GetMagic() << "\n\n";

	os << "CHECKSUM:\n";
	os << StringPrintf("%08x\n\n", oat_header.GetChecksum());

	os << "DEX FILE COUNT:\n";
	os << oat_header.GetDexFileCount() << "\n\n";

	os << "EXECUTABLE OFFSET:\n";
	os << StringPrintf("%08x\n\n", oat_header.GetExecutableOffset());

	os << "BASE:\n";
	os << reinterpret_cast<const void*>(oat_file.GetBase()) << "\n\n";

	os << "LIMIT:\n";
	os << reinterpret_cast<const void*>(oat_file.GetLimit()) << "\n\n";

	os << std::flush;

	std::vector<const OatFile::OatDexFile*> oat_dex_files = oat_file.GetOatDexFiles() ;
	for (size_t i = 0; i < oat_dex_files.size(); i++) {
	const OatFile::OatDexFile* oat_dex_file = oat_dex_files[i];
	CHECK(oat_dex_file != NULL);
	DumpOatDexFile(host_prefix, os, oat_file, *oat_dex_file);
	}
	}

	private:
	static void DumpOatDexFile(const std::string& host_prefix,
	std::ostream& os,
	const OatFile& oat_file,
	const OatFile::OatDexFile& oat_dex_file) {
	os << "OAT DEX FILE:\n";
	std::string dex_file_location = oat_dex_file.GetDexFileLocation();
	os << "location: " << dex_file_location;
	if (!host_prefix.empty()) {
	dex_file_location = host_prefix + dex_file_location;
	os << " (" << dex_file_location << ")";
	}
	os << "\n";
	os << StringPrintf("checksum: %08x\n", oat_dex_file.GetDexFileChecksum());
	const DexFile* dex_file = DexFile::Open(dex_file_location, "");
	if (dex_file == NULL) {
	os << "NOT FOUND\n\n";
	return;
	}
	for (size_t class_def_index = 0; class_def_index < dex_file->NumClassDefs(); class_def_index++) {
	const DexFile::ClassDef& class_def = dex_file->GetClassDef(class_def_index);
	const char* descriptor = dex_file->GetClassDescriptor(class_def);
	os << StringPrintf("%d: %s (type_idx=%d)\n", class_def_index, descriptor, class_def.class_idx_);
	UniquePtr<const OatFile::OatClass> oat_class(oat_dex_file.GetOatClass(class_def_index));
	CHECK(oat_class.get() != NULL);
	DumpOatClass(os, oat_file, oat_class.get(), dex_file, class_def);
	}

	os << std::flush;
	}

	static void DumpOatClass(std::ostream& os,
	const OatFile& oat_file,
	const OatFile::OatClass& oat_class,
	const DexFile& dex_file,
	const DexFile::ClassDef& class_def) {
	const byte* class_data = dex_file.GetClassData(class_def);
	DexFile::ClassDataHeader header = dex_file.ReadClassDataHeader(&class_data);
	size_t num_static_fields = header.static_fields_size_;
	size_t num_instance_fields = header.instance_fields_size_;
	size_t num_direct_methods = header.direct_methods_size_;
	size_t num_virtual_methods = header.virtual_methods_size_;
	uint32_t method_index = 0;

	// just skipping through the fields to advance class_data
	if (num_static_fields != 0) {
	uint32_t last_idx = 0;
	for (size_t i = 0; i < num_static_fields; ++i) {
	DexFile::Field dex_field;
	dex_file.dexReadClassDataField(&class_data, &dex_field, &last_idx);
	}
	}
	if (num_instance_fields != 0) {
	uint32_t last_idx = 0;
	for (size_t i = 0; i < num_instance_fields; ++i) {
	DexFile::Field dex_field;
	dex_file.dexReadClassDataField(&class_data, &dex_field, &last_idx);
	}
	}

	if (num_direct_methods != 0) {
	uint32_t last_idx = 0;
	for (size_t i = 0; i < num_direct_methods; ++i, method_index++) {
	DexFile::Method dex_method;
	dex_file.dexReadClassDataMethod(&class_data, &dex_method, &last_idx);
	const OatFile::OatMethod oat_method = oat_class.GetOatMethod(method_index);
	DumpOatMethod(os, method_index, oat_file, oat_method, dex_file, dex_method);
	}
	}
	if (num_virtual_methods != 0) {
	uint32_t last_idx = 0;
	for (size_t i = 0; i < num_virtual_methods; ++i, method_index++) {
	DexFile::Method dex_method;
	dex_file.dexReadClassDataMethod(&class_data, &dex_method, &last_idx);
	const OatFile::OatMethod oat_method = oat_class.GetOatMethod(method_index);
	DumpOatMethod(os, method_index, oat_file, oat_method, dex_file, dex_method);
	}
	}
	os << std::flush;
	}
	static void DumpOatMethod(std::ostream& os,
	uint32_t method_index,
	const OatFile& oat_file,
	const OatFile::OatMethod& oat_method,
	const DexFile& dex_file,
	const DexFile::Method& dex_method) {
	const DexFile::MethodId& method_id = dex_file.GetMethodId(dex_method.method_idx_);
	const char* name = dex_file.GetMethodName(method_id);
	std::string signature = dex_file.GetMethodSignature(method_id);
	os << StringPrintf("\t%d: %s %s (method_idx=%d)\n",
	method_index, name, signature.c_str(), dex_method.method_idx_);
	os << StringPrintf("\t\tcode: %p (offset=%08x)\n",
	oat_method.code_,
	reinterpret_cast<const byte*>(oat_method.code_) - oat_file.GetBase());
	os << StringPrintf("\t\tframe_size_in_bytes: %d\n",
	oat_method.frame_size_in_bytes_);
	os << StringPrintf("\t\treturn_pc_offset_in_bytes: %d\n",
	oat_method.return_pc_offset_in_bytes_);
	os << StringPrintf("\t\tcore_spill_mask: %08x\n",
	oat_method.core_spill_mask_);
	os << StringPrintf("\t\tfp_spill_mask: %08x\n",
	oat_method.fp_spill_mask_);
	os << StringPrintf("\t\tmapping_table: %p (offset=%08x)\n",
	oat_method.mapping_table_,
	reinterpret_cast<const byte*>(oat_method.mapping_table_) - oat_file.GetBase());
	os << StringPrintf("\t\tvmap_table: %p (offset=%08x)\n",
	oat_method.vmap_table_,
	reinterpret_cast<const byte*>(oat_method.vmap_table_) - oat_file.GetBase());
	os << StringPrintf("\t\tinvoke_stub: %p (offset=%08x)\n",
	oat_method.invoke_stub_,
	reinterpret_cast<const byte*>(oat_method.invoke_stub_) - oat_file.GetBase());
	}
	};

	class ImageDump {
	public:
	static void Dump(const std::string& image_filename,
	const std::string& host_prefix,
	std::ostream& os,
	Space& image_space,
	const ImageHeader& image_header) {
	os << "MAGIC:\n";
	os << image_header.GetMagic() << "\n\n";

	os << "IMAGE BASE:\n";
	os << reinterpret_cast<void*>(image_header.GetImageBaseAddr()) << "\n\n";

	os << "OAT CHECKSUM:\n";
	os << StringPrintf("%08x\n\n", image_header.GetOatChecksum());

	os << "OAT BASE:\n";
	os << reinterpret_cast<void*>(image_header.GetOatBaseAddr()) << "\n\n";

	os << "OAT LIMIT:\n";
	os << reinterpret_cast<void*>(image_header.GetOatLimitAddr()) << "\n\n";

	os << "ROOTS:\n";
	os << reinterpret_cast<void*>(image_header.GetImageRoots()) << "\n";
	CHECK_EQ(arraysize(image_roots_descriptions_), size_t(ImageHeader::kImageRootsMax));
	for (int i = 0; i < ImageHeader::kImageRootsMax; i++) {
	ImageHeader::ImageRoot image_root = static_cast<ImageHeader::ImageRoot>(i);
	const char* image_root_description = image_roots_descriptions_[i];
	Object* image_root_object = image_header.GetImageRoot(image_root);
	os << StringPrintf("%s: %p\n", image_root_description, image_root_object);
	if (image_root_object->IsObjectArray()) {
	// TODO: replace down_cast with AsObjectArray (g++ currently has a problem with this)
	ObjectArray<Object>* image_root_object_array
	= down_cast<ObjectArray<Object>*>(image_root_object);
	// = image_root_object->AsObjectArray<Object>();
	for (int i = 0; i < image_root_object_array->GetLength(); i++) {
	os << StringPrintf("\t%d: %p\n", i, image_root_object_array->Get(i));
	}
	}
	}
	os << "\n";

	os << "OBJECTS:\n" << std::flush;
	ImageDump state(image_space, os);
	HeapBitmap* heap_bitmap = Heap::GetLiveBits();
	DCHECK(heap_bitmap != NULL);
	heap_bitmap->Walk(ImageDump::Callback, &state);
	os << "\n";

	os << "STATS:\n" << std::flush;
	UniquePtr<File> file(OS::OpenFile(image_filename.c_str(), false));
	state.stats_.file_bytes = file->Length();
	size_t header_bytes = sizeof(ImageHeader);
	state.stats_.header_bytes = header_bytes;
	size_t alignment_bytes = RoundUp(header_bytes, kObjectAlignment) - header_bytes;
	state.stats_.alignment_bytes += alignment_bytes;
	state.stats_.Dump(os);
	os << "\n";

	os << std::flush;

	os << "OAT LOCATION:\n" << std::flush;
	Object* oat_location_object = image_header.GetImageRoot(ImageHeader::kOatLocation);
	std::string oat_location = oat_location_object->AsString()->ToModifiedUtf8();
	ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
	os << oat_location;
	if (!host_prefix.empty()) {
	oat_location = host_prefix + oat_location;
	os << " (" << oat_location << ")";
	}
	os << "\n";
	const OatFile* oat_file = class_linker->FindOatFile(oat_location);
	if (oat_file == NULL) {
	os << "NOT FOUND\n";
	os << std::flush;
	return;
	}
	os << "\n";
	os << std::flush;

	OatDump::Dump(oat_location, host_prefix, os, *oat_file);
	}

	private:

	ImageDump(const Space& dump_space, std::ostream& os) : dump_space_(dump_space), os_(os) {}

	~ImageDump() {}

	static void Callback(Object* obj, void* arg) {
	DCHECK(obj != NULL);
	DCHECK(arg != NULL);
	ImageDump* state = reinterpret_cast<ImageDump*>(arg);
	if (!state->InDumpSpace(obj)) {
	return;
	}

	size_t object_bytes = obj->SizeOf();
	size_t alignment_bytes = RoundUp(object_bytes, kObjectAlignment) - object_bytes;
	state->stats_.object_bytes += object_bytes;
	state->stats_.alignment_bytes += alignment_bytes;

	std::string summary;
	StringAppendF(&summary, "%p: ", obj);
	if (obj->IsClass()) {
	Class* klass = obj->AsClass();
	StringAppendF(&summary, "CLASS %s", klass->GetDescriptor()->ToModifiedUtf8().c_str());
	std::ostringstream ss;
	ss << " (" << klass->GetStatus() << ")";
	summary += ss.str();
	} else if (obj->IsMethod()) {
	Method* method = obj->AsMethod();
	StringAppendF(&summary, "METHOD %s", PrettyMethod(method).c_str());
	} else if (obj->IsField()) {
	Field* field = obj->AsField();
	StringAppendF(&summary, "FIELD %s", PrettyField(field).c_str());
	} else if (obj->IsArrayInstance()) {
	StringAppendF(&summary, "ARRAY %d", obj->AsArray()->GetLength());
	} else if (obj->IsString()) {
	StringAppendF(&summary, "STRING %s", obj->AsString()->ToModifiedUtf8().c_str());
	} else {
	StringAppendF(&summary, "OBJECT");
	}
	StringAppendF(&summary, "\n");
	std::string descriptor = obj->GetClass()->GetDescriptor()->ToModifiedUtf8();
	StringAppendF(&summary, "\tclass %p: %s\n", obj->GetClass(), descriptor.c_str());
	state->stats_.descriptor_to_bytes[descriptor] += object_bytes;
	state->stats_.descriptor_to_count[descriptor] += 1;
	// StringAppendF(&summary, "\tsize %d (alignment padding %d)\n",
	// object_bytes, RoundUp(object_bytes, kObjectAlignment) - object_bytes);
	if (obj->IsMethod()) {
	Method* method = obj->AsMethod();
	if (!method->IsCalleeSaveMethod()) {
	const int8_t* code =reinterpret_cast<const int8_t*>(method->GetCode());
	StringAppendF(&summary, "\tCODE %p\n", code);

	const Method::InvokeStub* invoke_stub = method->GetInvokeStub();
	StringAppendF(&summary, "\tJNI STUB %p\n", invoke_stub);
	}
	if (method->IsNative()) {
	if (method->IsRegistered()) {
	StringAppendF(&summary, "\tNATIVE REGISTERED %p\n", method->GetNativeMethod());
	} else {
	StringAppendF(&summary, "\tNATIVE UNREGISTERED\n");
	}
	DCHECK(method->GetGcMap() == NULL) << PrettyMethod(method);
	DCHECK(method->GetMappingTable() == NULL) << PrettyMethod(method);
	} else if (method->IsAbstract()) {
	StringAppendF(&summary, "\tABSTRACT\n");
	DCHECK(method->GetGcMap() == NULL) << PrettyMethod(method);
	DCHECK(method->GetMappingTable() == NULL) << PrettyMethod(method);
	} else if (method->IsCalleeSaveMethod()) {
	StringAppendF(&summary, "\tCALLEE SAVE METHOD\n");
	DCHECK(method->GetGcMap() == NULL) << PrettyMethod(method);
	DCHECK(method->GetMappingTable() == NULL) << PrettyMethod(method);
	} else {
	size_t register_map_bytes = method->GetGcMap()->SizeOf();
	state->stats_.register_map_bytes += register_map_bytes;

	if (method->GetMappingTable() != NULL) {
	size_t pc_mapping_table_bytes = method->GetMappingTableLength();
	state->stats_.pc_mapping_table_bytes += pc_mapping_table_bytes;
	}

	ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
	class DexCache* dex_cache = method->GetDeclaringClass()->GetDexCache();
	const DexFile& dex_file = class_linker->FindDexFile(dex_cache);
	const DexFile::CodeItem* code_item = dex_file.GetCodeItem(method->GetCodeItemOffset());
	size_t dex_instruction_bytes = code_item->insns_size_in_code_units_ * 2;
	state->stats_.dex_instruction_bytes += dex_instruction_bytes;
	}
	}
	state->os_ << summary << std::flush;
	}

	bool InDumpSpace(const Object* object) {
	const byte* o = reinterpret_cast<const byte*>(object);
	return (o >= dump_space_.GetBase() && o < dump_space_.GetLimit());
	}

	public:
	struct Stats {
	size_t file_bytes;

	size_t header_bytes;
	size_t object_bytes;
	size_t alignment_bytes;

	size_t managed_code_bytes;
	size_t managed_to_native_code_bytes;
	size_t native_to_managed_code_bytes;

	size_t register_map_bytes;
	size_t pc_mapping_table_bytes;

	size_t dex_instruction_bytes;

	Stats()
	: file_bytes(0),
	header_bytes(0),
	object_bytes(0),
	alignment_bytes(0),
	managed_code_bytes(0),
	managed_to_native_code_bytes(0),
	native_to_managed_code_bytes(0),
	register_map_bytes(0),
	pc_mapping_table_bytes(0),
	dex_instruction_bytes(0) {}

	typedef std::tr1::unordered_map<std::string,size_t> TableBytes;
	TableBytes descriptor_to_bytes;

	typedef std::tr1::unordered_map<std::string,size_t> TableCount;
	TableCount descriptor_to_count;

	double PercentOfFileBytes(size_t size) {
	return (static_cast<double>(size) / static_cast<double>(file_bytes)) * 100;
	}

	double PercentOfObjectBytes(size_t size) {
	return (static_cast<double>(size) / static_cast<double>(object_bytes)) * 100;
	}

	void Dump(std::ostream& os) {
	os << StringPrintf("\tfile_bytes = %d\n", file_bytes);
	os << "\n";

	os << "\tfile_bytes = header_bytes + object_bytes + alignment_bytes\n";
	os << StringPrintf("\theader_bytes = %10d (%2.0f%% of file_bytes)\n",
	header_bytes, PercentOfFileBytes(header_bytes));
	os << StringPrintf("\tobject_bytes = %10d (%2.0f%% of file_bytes)\n",
	object_bytes, PercentOfFileBytes(object_bytes));
	os << StringPrintf("\talignment_bytes = %10d (%2.0f%% of file_bytes)\n",
	alignment_bytes, PercentOfFileBytes(alignment_bytes));
	os << "\n";
	os << std::flush;
	CHECK_EQ(file_bytes, header_bytes + object_bytes + alignment_bytes);

	os << "\tobject_bytes = sum of descriptor_to_bytes values below:\n";
	size_t object_bytes_total = 0;
	typedef TableBytes::const_iterator It; // TODO: C++0x auto
	for (It it = descriptor_to_bytes.begin(), end = descriptor_to_bytes.end(); it != end; ++it) {
	const std::string& descriptor = it->first;
	size_t bytes = it->second;
	size_t count = descriptor_to_count[descriptor];
	double average = static_cast<double>(bytes) / static_cast<double>(count);
	double percent = PercentOfObjectBytes(bytes);
	os << StringPrintf("\t%32s %8d bytes %6d instances "
	"(%3.0f bytes/instance) %2.0f%% of object_bytes\n",
	descriptor.c_str(), bytes, count,
	average, percent);

	object_bytes_total += bytes;
	}
	os << "\n";
	os << std::flush;
	CHECK_EQ(object_bytes, object_bytes_total);

	os << StringPrintf("\tmanaged_code_bytes = %8d (%2.0f%% of object_bytes)\n",
	managed_code_bytes, PercentOfObjectBytes(managed_code_bytes));
	os << StringPrintf("\tmanaged_to_native_code_bytes = %8d (%2.0f%% of object_bytes)\n",
	managed_to_native_code_bytes,
	PercentOfObjectBytes(managed_to_native_code_bytes));
	os << StringPrintf("\tnative_to_managed_code_bytes = %8d (%2.0f%% of object_bytes)\n",
	native_to_managed_code_bytes,
	PercentOfObjectBytes(native_to_managed_code_bytes));
	os << "\n";
	os << std::flush;

	os << StringPrintf("\tregister_map_bytes = %7d (%2.0f%% of object_bytes)\n",
	register_map_bytes, PercentOfObjectBytes(register_map_bytes));
	os << StringPrintf("\tpc_mapping_table_bytes = %7d (%2.0f%% of object_bytes)\n",
	pc_mapping_table_bytes, PercentOfObjectBytes(pc_mapping_table_bytes));
	os << "\n";
	os << std::flush;

	os << StringPrintf("\tdex_instruction_bytes = %d\n", dex_instruction_bytes);
	os << StringPrintf("\tmanaged_code_bytes expansion = %.2f\n",
	static_cast<double>(managed_code_bytes)
	/ static_cast<double>(dex_instruction_bytes));
	os << "\n";
	os << std::flush;
	}
	} stats_;

	private:
	const Space& dump_space_;
	std::ostream& os_;

	DISALLOW_COPY_AND_ASSIGN(ImageDump);
	};

	int oatdump(int argc, char** argv) {
	// Skip over argv[0].
	argv++;
	argc--;

	if (argc == 0) {
	fprintf(stderr, "No arguments specified\n");
	usage();
	}

	const char* oat_filename = NULL;
	const char* image_filename = NULL;
	const char* boot_image_filename = NULL;
	std::string host_prefix;
	std::ostream* os = &std::cout;
	UniquePtr<std::ofstream> out;

	for (int i = 0; i < argc; i++) {
	const StringPiece option(argv[i]);
	if (option.starts_with("--oat=")) {
	oat_filename = option.substr(strlen("--oat=")).data();
	} else if (option.starts_with("--image=")) {
	image_filename = option.substr(strlen("--image=")).data();
	} else if (option.starts_with("--boot-image=")) {
	boot_image_filename = option.substr(strlen("--boot-image=")).data();
	} else if (option.starts_with("--host-prefix=")) {
	host_prefix = option.substr(strlen("--host-prefix=")).data();
	} else if (option.starts_with("--output=")) {
	const char* filename = option.substr(strlen("--output=")).data();
	out.reset(new std::ofstream(filename));
	if (!out->good()) {
	fprintf(stderr, "Failed to open output filename %s\n", filename);
	usage();
	}
	os = out.get();
	} else {
	fprintf(stderr, "Unknown argument %s\n", option.data());
	usage();
	}
	}

	if (image_filename == NULL && oat_filename == NULL) {
	fprintf(stderr, "Either --image or --oat must be specified\n");
	return EXIT_FAILURE;
	}

	if (image_filename != NULL && oat_filename != NULL) {
	fprintf(stderr, "Either --image or --oat must be specified but not both\n");
	return EXIT_FAILURE;
	}

	if (oat_filename != NULL) {
	const OatFile* oat_file = OatFile::Open(oat_filename, "", NULL);
	if (oat_file == NULL) {
	fprintf(stderr, "Failed to open oat file from %s\n", oat_filename);
	return EXIT_FAILURE;
	}
	OatDump::Dump(oat_filename, host_prefix, os, oat_file);
	return EXIT_SUCCESS;
	}

	Runtime::Options options;
	std::string image_option;
	std::string oat_option;
	std::string boot_image_option;
	std::string boot_oat_option;
	if (boot_image_filename != NULL) {
	boot_image_option += "-Ximage:";
	boot_image_option += boot_image_filename;
	options.push_back(std::make_pair(boot_image_option.c_str(), reinterpret_cast<void*>(NULL)));
	}
	if (image_filename != NULL) {
	image_option += "-Ximage:";
	image_option += image_filename;
	options.push_back(std::make_pair(image_option.c_str(), reinterpret_cast<void*>(NULL)));
	}

	if (!host_prefix.empty()) {
	options.push_back(std::make_pair("host-prefix", host_prefix.c_str()));
	}

	UniquePtr<Runtime> runtime(Runtime::Create(options, false));
	if (runtime.get() == NULL) {
	fprintf(stderr, "Failed to create runtime\n");
	return EXIT_FAILURE;
	}

	Space* image_space = Heap::GetSpaces()[Heap::GetSpaces().size()-2];
	CHECK(image_space != NULL);
	const ImageHeader& image_header = image_space->GetImageHeader();
	if (!image_header.IsValid()) {
	fprintf(stderr, "Invalid image header %s\n", image_filename);
	return EXIT_FAILURE;
	}
	ImageDump::Dump(image_filename, host_prefix, os, image_space, image_header);
	return EXIT_SUCCESS;
	}

	} // namespace art

	int main(int argc, char** argv) {
	return art::oatdump(argc, argv);
	}