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/*
* Copyright (C) 2012 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.
*/
#include "elf_writer.h"
#include "art_method-inl.h"
#include "base/unix_file/fd_file.h"
#include "class_linker.h"
#include "dex_file-inl.h"
#include "dex_method_iterator.h"
#include "driver/compiler_driver.h"
#include "elf_file.h"
#include "invoke_type.h"
#include "mirror/object-inl.h"
#include "oat.h"
#include "scoped_thread_state_change.h"
namespace art {
uintptr_t ElfWriter::GetOatDataAddress(ElfFile* elf_file) {
uintptr_t oatdata_address = elf_file->FindSymbolAddress(SHT_DYNSYM,
"oatdata",
false);
CHECK_NE(0U, oatdata_address);
return oatdata_address;
}
void ElfWriter::GetOatElfInformation(File* file,
size_t* oat_loaded_size,
size_t* oat_data_offset) {
std::string error_msg;
std::unique_ptr<ElfFile> elf_file(ElfFile::Open(file, false, false, &error_msg));
CHECK(elf_file.get() != nullptr) << error_msg;
bool success = elf_file->GetLoadedSize(oat_loaded_size, &error_msg);
CHECK(success) << error_msg;
CHECK_NE(0U, *oat_loaded_size);
*oat_data_offset = GetOatDataAddress(elf_file.get());
CHECK_NE(0U, *oat_data_offset);
}
bool ElfWriter::Fixup(File* file, uintptr_t oat_data_begin) {
std::string error_msg;
std::unique_ptr<ElfFile> elf_file(ElfFile::Open(file, true, false, &error_msg));
CHECK(elf_file.get() != nullptr) << error_msg;
// Lookup "oatdata" symbol address.
uintptr_t oatdata_address = ElfWriter::GetOatDataAddress(elf_file.get());
uintptr_t base_address = oat_data_begin - oatdata_address;
return elf_file->Fixup(base_address);
}
} // namespace art
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