blob: 15f495e05e335b8eafa1db3ddc027a3ee94a3404 [file] [log] [blame]
/*
* Copyright (C) 2016 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 "multi_oat_relative_patcher.h"
#include <android-base/logging.h>
#include "base/bit_utils.h"
#include "base/globals.h"
#include "driver/compiled_method_storage.h"
namespace art {
namespace linker {
void MultiOatRelativePatcher::ThunkProvider::GetThunkCode(const LinkerPatch& patch,
/*out*/ ArrayRef<const uint8_t>* code,
/*out*/ std::string* debug_name) {
*code = storage_->GetThunkCode(patch, debug_name);
DCHECK(!code->empty());
}
MultiOatRelativePatcher::MultiOatRelativePatcher(InstructionSet instruction_set,
const InstructionSetFeatures* features,
CompiledMethodStorage* storage)
: thunk_provider_(storage),
method_offset_map_(),
relative_patcher_(RelativePatcher::Create(instruction_set,
features,
&thunk_provider_,
&method_offset_map_)),
adjustment_(0u),
instruction_set_(instruction_set),
start_size_code_alignment_(0u),
start_size_relative_call_thunks_(0u),
start_size_misc_thunks_(0u) {
}
void MultiOatRelativePatcher::StartOatFile(uint32_t adjustment) {
DCHECK_ALIGNED(adjustment, kElfSegmentAlignment);
adjustment_ = adjustment;
start_size_code_alignment_ = relative_patcher_->CodeAlignmentSize();
start_size_relative_call_thunks_ = relative_patcher_->RelativeCallThunksSize();
start_size_misc_thunks_ = relative_patcher_->MiscThunksSize();
}
uint32_t MultiOatRelativePatcher::CodeAlignmentSize() const {
DCHECK_GE(relative_patcher_->CodeAlignmentSize(), start_size_code_alignment_);
return relative_patcher_->CodeAlignmentSize() - start_size_code_alignment_;
}
uint32_t MultiOatRelativePatcher::RelativeCallThunksSize() const {
DCHECK_GE(relative_patcher_->RelativeCallThunksSize(), start_size_relative_call_thunks_);
return relative_patcher_->RelativeCallThunksSize() - start_size_relative_call_thunks_;
}
uint32_t MultiOatRelativePatcher::MiscThunksSize() const {
DCHECK_GE(relative_patcher_->MiscThunksSize(), start_size_misc_thunks_);
return relative_patcher_->MiscThunksSize() - start_size_misc_thunks_;
}
std::pair<bool, uint32_t> MultiOatRelativePatcher::MethodOffsetMap::FindMethodOffset(
MethodReference ref) {
auto it = map.find(ref);
if (it == map.end()) {
return std::pair<bool, uint32_t>(false, 0u);
} else {
return std::pair<bool, uint32_t>(true, it->second);
}
}
} // namespace linker
} // namespace art