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 #include "elf_writer.h"
     18 
     19 #include "base/unix_file/fd_file.h"
     20 #include "class_linker.h"
     21 #include "dex_file-inl.h"
     22 #include "dex_method_iterator.h"
     23 #include "driver/compiler_driver.h"
     24 #include "elf_file.h"
     25 #include "invoke_type.h"
     26 #include "llvm/utils_llvm.h"
     27 #include "mirror/art_method-inl.h"
     28 #include "mirror/object-inl.h"
     29 #include "oat.h"
     30 #include "scoped_thread_state_change.h"
     31 
     32 namespace art {
     33 
     34 ElfWriter::ElfWriter(const CompilerDriver& driver, File* elf_file)
     35   : compiler_driver_(&driver), elf_file_(elf_file) {}
     36 
     37 ElfWriter::~ElfWriter() {}
     38 
     39 llvm::ELF::Elf32_Addr ElfWriter::GetOatDataAddress(ElfFile* elf_file) {
     40   llvm::ELF::Elf32_Addr oatdata_address = elf_file->FindSymbolAddress(llvm::ELF::SHT_DYNSYM,
     41                                                                       "oatdata",
     42                                                                       false);
     43   CHECK_NE(0U, oatdata_address);
     44   return oatdata_address;
     45 }
     46 
     47 void ElfWriter::GetOatElfInformation(File* file,
     48                                      size_t& oat_loaded_size,
     49                                      size_t& oat_data_offset) {
     50   UniquePtr<ElfFile> elf_file(ElfFile::Open(file, false, false));
     51   CHECK(elf_file.get() != NULL);
     52 
     53   oat_loaded_size = elf_file->GetLoadedSize();
     54   CHECK_NE(0U, oat_loaded_size);
     55   oat_data_offset = GetOatDataAddress(elf_file.get());
     56   CHECK_NE(0U, oat_data_offset);
     57 }
     58 
     59 }  // namespace art
     60