Vladimir Marko | 944da60 | 2016-02-19 12:27:55 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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 "multi_oat_relative_patcher.h" |
| 18 | |
| 19 | #include "globals.h" |
| 20 | #include "base/bit_utils.h" |
| 21 | #include "base/logging.h" |
| 22 | |
| 23 | namespace art { |
| 24 | namespace linker { |
| 25 | |
| 26 | MultiOatRelativePatcher::MultiOatRelativePatcher(InstructionSet instruction_set, |
| 27 | const InstructionSetFeatures* features) |
| 28 | : method_offset_map_(), |
| 29 | relative_patcher_( |
| 30 | linker::RelativePatcher::Create(instruction_set, features, &method_offset_map_)), |
| 31 | adjustment_(0u), |
| 32 | instruction_set_(instruction_set), |
| 33 | start_size_code_alignment_(0u), |
| 34 | start_size_relative_call_thunks_(0u), |
| 35 | start_size_misc_thunks_(0u) { |
| 36 | } |
| 37 | |
| 38 | void MultiOatRelativePatcher::StartOatFile(uint32_t adjustment) { |
| 39 | DCHECK_ALIGNED(adjustment, kPageSize); |
| 40 | adjustment_ = adjustment; |
| 41 | |
| 42 | start_size_code_alignment_ = relative_patcher_->CodeAlignmentSize(); |
| 43 | start_size_relative_call_thunks_ = relative_patcher_->RelativeCallThunksSize(); |
| 44 | start_size_misc_thunks_ = relative_patcher_->MiscThunksSize(); |
| 45 | } |
| 46 | |
| 47 | uint32_t MultiOatRelativePatcher::CodeAlignmentSize() const { |
| 48 | DCHECK_GE(relative_patcher_->CodeAlignmentSize(), start_size_code_alignment_); |
| 49 | return relative_patcher_->CodeAlignmentSize() - start_size_code_alignment_; |
| 50 | } |
| 51 | |
| 52 | uint32_t MultiOatRelativePatcher::RelativeCallThunksSize() const { |
| 53 | DCHECK_GE(relative_patcher_->RelativeCallThunksSize(), start_size_relative_call_thunks_); |
| 54 | return relative_patcher_->RelativeCallThunksSize() - start_size_relative_call_thunks_; |
| 55 | } |
| 56 | |
| 57 | uint32_t MultiOatRelativePatcher::MiscThunksSize() const { |
| 58 | DCHECK_GE(relative_patcher_->MiscThunksSize(), start_size_misc_thunks_); |
| 59 | return relative_patcher_->MiscThunksSize() - start_size_misc_thunks_; |
| 60 | } |
| 61 | |
| 62 | std::pair<bool, uint32_t> MultiOatRelativePatcher::MethodOffsetMap::FindMethodOffset( |
| 63 | MethodReference ref) { |
| 64 | auto it = map.find(ref); |
| 65 | if (it == map.end()) { |
| 66 | return std::pair<bool, uint32_t>(false, 0u); |
| 67 | } else { |
| 68 | return std::pair<bool, uint32_t>(true, it->second); |
| 69 | } |
| 70 | } |
| 71 | } // namespace linker |
| 72 | } // namespace art |