| //===-- MinidumpTypes.cpp ---------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // Project includes |
| #include "MinidumpTypes.h" |
| |
| // Other libraries and framework includes |
| // C includes |
| // C++ includes |
| |
| using namespace lldb_private; |
| using namespace minidump; |
| |
| const MinidumpHeader *MinidumpHeader::Parse(llvm::ArrayRef<uint8_t> &data) { |
| const MinidumpHeader *header = nullptr; |
| Status error = consumeObject(data, header); |
| |
| const MinidumpHeaderConstants signature = |
| static_cast<const MinidumpHeaderConstants>( |
| static_cast<const uint32_t>(header->signature)); |
| const MinidumpHeaderConstants version = |
| static_cast<const MinidumpHeaderConstants>( |
| static_cast<const uint32_t>(header->version) & 0x0000ffff); |
| // the high 16 bits of the version field are implementation specific |
| |
| if (error.Fail() || signature != MinidumpHeaderConstants::Signature || |
| version != MinidumpHeaderConstants::Version) |
| return nullptr; |
| |
| return header; |
| } |
| |
| // Minidump string |
| llvm::Optional<std::string> |
| lldb_private::minidump::parseMinidumpString(llvm::ArrayRef<uint8_t> &data) { |
| std::string result; |
| |
| const uint32_t *source_length_ptr; |
| Status error = consumeObject(data, source_length_ptr); |
| |
| // Copy non-aligned source_length data into aligned memory. |
| uint32_t source_length; |
| std::memcpy(&source_length, source_length_ptr, sizeof(source_length)); |
| |
| if (error.Fail() || source_length > data.size() || source_length % 2 != 0) |
| return llvm::None; |
| |
| auto source_start = reinterpret_cast<const llvm::UTF16 *>(data.data()); |
| // source_length is the length of the string in bytes we need the length of |
| // the string in UTF-16 characters/code points (16 bits per char) that's why |
| // it's divided by 2 |
| const auto source_end = source_start + source_length / 2; |
| // resize to worst case length |
| result.resize(UNI_MAX_UTF8_BYTES_PER_CODE_POINT * source_length / 2); |
| auto result_start = reinterpret_cast<llvm::UTF8 *>(&result[0]); |
| const auto result_end = result_start + result.size(); |
| llvm::ConvertUTF16toUTF8(&source_start, source_end, &result_start, result_end, |
| llvm::strictConversion); |
| const auto result_size = |
| std::distance(reinterpret_cast<llvm::UTF8 *>(&result[0]), result_start); |
| result.resize(result_size); // shrink to actual length |
| |
| return result; |
| } |
| |
| // MinidumpThread |
| const MinidumpThread *MinidumpThread::Parse(llvm::ArrayRef<uint8_t> &data) { |
| const MinidumpThread *thread = nullptr; |
| Status error = consumeObject(data, thread); |
| if (error.Fail()) |
| return nullptr; |
| |
| return thread; |
| } |
| |
| llvm::ArrayRef<MinidumpThread> |
| MinidumpThread::ParseThreadList(llvm::ArrayRef<uint8_t> &data) { |
| const auto orig_size = data.size(); |
| const llvm::support::ulittle32_t *thread_count; |
| Status error = consumeObject(data, thread_count); |
| if (error.Fail() || *thread_count * sizeof(MinidumpThread) > data.size()) |
| return {}; |
| |
| // Compilers might end up padding an extra 4 bytes depending on how the |
| // structure is padded by the compiler and the #pragma pack settings. |
| if (4 + *thread_count * sizeof(MinidumpThread) < orig_size) |
| data = data.drop_front(4); |
| |
| return llvm::ArrayRef<MinidumpThread>( |
| reinterpret_cast<const MinidumpThread *>(data.data()), *thread_count); |
| } |
| |
| // MinidumpSystemInfo |
| const MinidumpSystemInfo * |
| MinidumpSystemInfo::Parse(llvm::ArrayRef<uint8_t> &data) { |
| const MinidumpSystemInfo *system_info; |
| Status error = consumeObject(data, system_info); |
| if (error.Fail()) |
| return nullptr; |
| |
| return system_info; |
| } |
| |
| // MinidumpMiscInfo |
| const MinidumpMiscInfo *MinidumpMiscInfo::Parse(llvm::ArrayRef<uint8_t> &data) { |
| const MinidumpMiscInfo *misc_info; |
| Status error = consumeObject(data, misc_info); |
| if (error.Fail()) |
| return nullptr; |
| |
| return misc_info; |
| } |
| |
| llvm::Optional<lldb::pid_t> MinidumpMiscInfo::GetPid() const { |
| uint32_t pid_flag = |
| static_cast<const uint32_t>(MinidumpMiscInfoFlags::ProcessID); |
| if (flags1 & pid_flag) |
| return llvm::Optional<lldb::pid_t>(process_id); |
| |
| return llvm::None; |
| } |
| |
| // Linux Proc Status |
| // it's stored as an ascii string in the file |
| llvm::Optional<LinuxProcStatus> |
| LinuxProcStatus::Parse(llvm::ArrayRef<uint8_t> &data) { |
| LinuxProcStatus result; |
| result.proc_status = |
| llvm::StringRef(reinterpret_cast<const char *>(data.data()), data.size()); |
| data = data.drop_front(data.size()); |
| |
| llvm::SmallVector<llvm::StringRef, 0> lines; |
| result.proc_status.split(lines, '\n', 42); |
| // /proc/$pid/status has 41 lines, but why not use 42? |
| for (auto line : lines) { |
| if (line.consume_front("Pid:")) { |
| line = line.trim(); |
| if (!line.getAsInteger(10, result.pid)) |
| return result; |
| } |
| } |
| |
| return llvm::None; |
| } |
| |
| lldb::pid_t LinuxProcStatus::GetPid() const { return pid; } |
| |
| // Module stuff |
| const MinidumpModule *MinidumpModule::Parse(llvm::ArrayRef<uint8_t> &data) { |
| const MinidumpModule *module = nullptr; |
| Status error = consumeObject(data, module); |
| if (error.Fail()) |
| return nullptr; |
| |
| return module; |
| } |
| |
| llvm::ArrayRef<MinidumpModule> |
| MinidumpModule::ParseModuleList(llvm::ArrayRef<uint8_t> &data) { |
| const auto orig_size = data.size(); |
| const llvm::support::ulittle32_t *modules_count; |
| Status error = consumeObject(data, modules_count); |
| if (error.Fail() || *modules_count * sizeof(MinidumpModule) > data.size()) |
| return {}; |
| |
| // Compilers might end up padding an extra 4 bytes depending on how the |
| // structure is padded by the compiler and the #pragma pack settings. |
| if (4 + *modules_count * sizeof(MinidumpModule) < orig_size) |
| data = data.drop_front(4); |
| |
| return llvm::ArrayRef<MinidumpModule>( |
| reinterpret_cast<const MinidumpModule *>(data.data()), *modules_count); |
| } |
| |
| // Exception stuff |
| const MinidumpExceptionStream * |
| MinidumpExceptionStream::Parse(llvm::ArrayRef<uint8_t> &data) { |
| const MinidumpExceptionStream *exception_stream = nullptr; |
| Status error = consumeObject(data, exception_stream); |
| if (error.Fail()) |
| return nullptr; |
| |
| return exception_stream; |
| } |
| |
| llvm::ArrayRef<MinidumpMemoryDescriptor> |
| MinidumpMemoryDescriptor::ParseMemoryList(llvm::ArrayRef<uint8_t> &data) { |
| const auto orig_size = data.size(); |
| const llvm::support::ulittle32_t *mem_ranges_count; |
| Status error = consumeObject(data, mem_ranges_count); |
| if (error.Fail() || |
| *mem_ranges_count * sizeof(MinidumpMemoryDescriptor) > data.size()) |
| return {}; |
| |
| // Compilers might end up padding an extra 4 bytes depending on how the |
| // structure is padded by the compiler and the #pragma pack settings. |
| if (4 + *mem_ranges_count * sizeof(MinidumpMemoryDescriptor) < orig_size) |
| data = data.drop_front(4); |
| |
| return llvm::makeArrayRef( |
| reinterpret_cast<const MinidumpMemoryDescriptor *>(data.data()), |
| *mem_ranges_count); |
| } |
| |
| std::pair<llvm::ArrayRef<MinidumpMemoryDescriptor64>, uint64_t> |
| MinidumpMemoryDescriptor64::ParseMemory64List(llvm::ArrayRef<uint8_t> &data) { |
| const llvm::support::ulittle64_t *mem_ranges_count; |
| Status error = consumeObject(data, mem_ranges_count); |
| if (error.Fail() || |
| *mem_ranges_count * sizeof(MinidumpMemoryDescriptor64) > data.size()) |
| return {}; |
| |
| const llvm::support::ulittle64_t *base_rva; |
| error = consumeObject(data, base_rva); |
| if (error.Fail()) |
| return {}; |
| |
| return std::make_pair( |
| llvm::makeArrayRef( |
| reinterpret_cast<const MinidumpMemoryDescriptor64 *>(data.data()), |
| *mem_ranges_count), |
| *base_rva); |
| } |
| |
| std::vector<const MinidumpMemoryInfo *> |
| MinidumpMemoryInfo::ParseMemoryInfoList(llvm::ArrayRef<uint8_t> &data) { |
| const MinidumpMemoryInfoListHeader *header; |
| Status error = consumeObject(data, header); |
| if (error.Fail() || |
| header->size_of_header < sizeof(MinidumpMemoryInfoListHeader) || |
| header->size_of_entry < sizeof(MinidumpMemoryInfo)) |
| return {}; |
| |
| data = data.drop_front(header->size_of_header - |
| sizeof(MinidumpMemoryInfoListHeader)); |
| |
| if (header->size_of_entry * header->num_of_entries > data.size()) |
| return {}; |
| |
| std::vector<const MinidumpMemoryInfo *> result; |
| for (uint64_t i = 0; i < header->num_of_entries; ++i) { |
| result.push_back(reinterpret_cast<const MinidumpMemoryInfo *>( |
| data.data() + i * header->size_of_entry)); |
| } |
| |
| return result; |
| } |