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Diffstat (limited to 'libunwindstack/DexFiles.cpp')
| -rw-r--r-- | libunwindstack/DexFiles.cpp | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/libunwindstack/DexFiles.cpp b/libunwindstack/DexFiles.cpp deleted file mode 100644 index 63a77e50f..000000000 --- a/libunwindstack/DexFiles.cpp +++ /dev/null @@ -1,179 +0,0 @@ -/* - * Copyright (C) 2018 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 <stdint.h> -#include <sys/mman.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include <memory> - -#include <unwindstack/DexFiles.h> -#include <unwindstack/MapInfo.h> -#include <unwindstack/Maps.h> -#include <unwindstack/Memory.h> - -#include "DexFile.h" - -namespace unwindstack { - -struct DEXFileEntry32 { - uint32_t next; - uint32_t prev; - uint32_t dex_file; -}; - -struct DEXFileEntry64 { - uint64_t next; - uint64_t prev; - uint64_t dex_file; -}; - -DexFiles::DexFiles(std::shared_ptr<Memory>& memory) : Global(memory) {} - -DexFiles::DexFiles(std::shared_ptr<Memory>& memory, std::vector<std::string>& search_libs) - : Global(memory, search_libs) {} - -DexFiles::~DexFiles() {} - -void DexFiles::ProcessArch() { - switch (arch()) { - case ARCH_ARM: - case ARCH_MIPS: - case ARCH_X86: - read_entry_ptr_func_ = &DexFiles::ReadEntryPtr32; - read_entry_func_ = &DexFiles::ReadEntry32; - break; - - case ARCH_ARM64: - case ARCH_MIPS64: - case ARCH_X86_64: - read_entry_ptr_func_ = &DexFiles::ReadEntryPtr64; - read_entry_func_ = &DexFiles::ReadEntry64; - break; - - case ARCH_UNKNOWN: - abort(); - } -} - -uint64_t DexFiles::ReadEntryPtr32(uint64_t addr) { - uint32_t entry; - const uint32_t field_offset = 12; // offset of first_entry_ in the descriptor struct. - if (!memory_->ReadFully(addr + field_offset, &entry, sizeof(entry))) { - return 0; - } - return entry; -} - -uint64_t DexFiles::ReadEntryPtr64(uint64_t addr) { - uint64_t entry; - const uint32_t field_offset = 16; // offset of first_entry_ in the descriptor struct. - if (!memory_->ReadFully(addr + field_offset, &entry, sizeof(entry))) { - return 0; - } - return entry; -} - -bool DexFiles::ReadEntry32() { - DEXFileEntry32 entry; - if (!memory_->ReadFully(entry_addr_, &entry, sizeof(entry)) || entry.dex_file == 0) { - entry_addr_ = 0; - return false; - } - - addrs_.push_back(entry.dex_file); - entry_addr_ = entry.next; - return true; -} - -bool DexFiles::ReadEntry64() { - DEXFileEntry64 entry; - if (!memory_->ReadFully(entry_addr_, &entry, sizeof(entry)) || entry.dex_file == 0) { - entry_addr_ = 0; - return false; - } - - addrs_.push_back(entry.dex_file); - entry_addr_ = entry.next; - return true; -} - -bool DexFiles::ReadVariableData(uint64_t ptr_offset) { - entry_addr_ = (this->*read_entry_ptr_func_)(ptr_offset); - return entry_addr_ != 0; -} - -void DexFiles::Init(Maps* maps) { - if (initialized_) { - return; - } - initialized_ = true; - entry_addr_ = 0; - - FindAndReadVariable(maps, "__dex_debug_descriptor"); -} - -DexFile* DexFiles::GetDexFile(uint64_t dex_file_offset, MapInfo* info) { - // Lock while processing the data. - DexFile* dex_file; - auto entry = files_.find(dex_file_offset); - if (entry == files_.end()) { - std::unique_ptr<DexFile> new_dex_file = DexFile::Create(dex_file_offset, memory_.get(), info); - dex_file = new_dex_file.get(); - files_[dex_file_offset] = std::move(new_dex_file); - } else { - dex_file = entry->second.get(); - } - return dex_file; -} - -bool DexFiles::GetAddr(size_t index, uint64_t* addr) { - if (index < addrs_.size()) { - *addr = addrs_[index]; - return true; - } - if (entry_addr_ != 0 && (this->*read_entry_func_)()) { - *addr = addrs_.back(); - return true; - } - return false; -} - -void DexFiles::GetMethodInformation(Maps* maps, MapInfo* info, uint64_t dex_pc, - std::string* method_name, uint64_t* method_offset) { - std::lock_guard<std::mutex> guard(lock_); - if (!initialized_) { - Init(maps); - } - - size_t index = 0; - uint64_t addr; - while (GetAddr(index++, &addr)) { - if (addr < info->start || addr >= info->end) { - continue; - } - - DexFile* dex_file = GetDexFile(addr, info); - if (dex_file != nullptr && - dex_file->GetMethodInformation(dex_pc - addr, method_name, method_offset)) { - break; - } - } -} - -} // namespace unwindstack |
