lib/ObjectYAML/MinidumpYAML.cpp

   1 //===- MinidumpYAML.cpp - Minidump YAMLIO implementation ------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "llvm/ObjectYAML/MinidumpYAML.h"
  10 #include "llvm/Support/Allocator.h"
  11
  12 using namespace llvm;
  13 using namespace llvm::MinidumpYAML;
  14 using namespace llvm::minidump;
  15
  16 /// Perform an optional yaml-mapping of an endian-aware type EndianType. The
  17 /// only purpose of this function is to avoid casting the Default value to the
  18 /// endian type;
  19 template <typename EndianType>
  20 static inline void mapOptional(yaml::IO &IO, const char *Key, EndianType &Val,
  21                                typename EndianType::value_type Default) {
  22   IO.mapOptional(Key, Val, EndianType(Default));
  23 }
  24
  25 /// Yaml-map an endian-aware type EndianType as some other type MapType.
  26 template <typename MapType, typename EndianType>
  27 static inline void mapRequiredAs(yaml::IO &IO, const char *Key,
  28                                  EndianType &Val) {
  29   MapType Mapped = static_cast<typename EndianType::value_type>(Val);
  30   IO.mapRequired(Key, Mapped);
  31   Val = static_cast<typename EndianType::value_type>(Mapped);
  32 }
  33
  34 /// Perform an optional yaml-mapping of an endian-aware type EndianType as some
  35 /// other type MapType.
  36 template <typename MapType, typename EndianType>
  37 static inline void mapOptionalAs(yaml::IO &IO, const char *Key, EndianType &Val,
  38                                  MapType Default) {
  39   MapType Mapped = static_cast<typename EndianType::value_type>(Val);
  40   IO.mapOptional(Key, Mapped, Default);
  41   Val = static_cast<typename EndianType::value_type>(Mapped);
  42 }
  43
  44 namespace {
  45 /// Return the appropriate yaml Hex type for a given endian-aware type.
  46 template <typename EndianType> struct HexType;
  47 template <> struct HexType<support::ulittle16_t> { using type = yaml::Hex16; };
  48 template <> struct HexType<support::ulittle32_t> { using type = yaml::Hex32; };
  49 template <> struct HexType<support::ulittle64_t> { using type = yaml::Hex64; };
  50 } // namespace
  51
  52 /// Yaml-map an endian-aware type as an appropriately-sized hex value.
  53 template <typename EndianType>
  54 static inline void mapRequiredHex(yaml::IO &IO, const char *Key,
  55                                   EndianType &Val) {
  56   mapRequiredAs<typename HexType<EndianType>::type>(IO, Key, Val);
  57 }
  58
  59 /// Perform an optional yaml-mapping of an endian-aware type as an
  60 /// appropriately-sized hex value.
  61 template <typename EndianType>
  62 static inline void mapOptionalHex(yaml::IO &IO, const char *Key,
  63                                   EndianType &Val,
  64                                   typename EndianType::value_type Default) {
  65   mapOptionalAs<typename HexType<EndianType>::type>(IO, Key, Val, Default);
  66 }
  67
  68 Stream::~Stream() = default;
  69
  70 Stream::StreamKind Stream::getKind(StreamType Type) {
  71   switch (Type) {
  72   case StreamType::Exception:
  73     return StreamKind::Exception;
  74   case StreamType::MemoryInfoList:
  75     return StreamKind::MemoryInfoList;
  76   case StreamType::MemoryList:
  77     return StreamKind::MemoryList;
  78   case StreamType::ModuleList:
  79     return StreamKind::ModuleList;
  80   case StreamType::SystemInfo:
  81     return StreamKind::SystemInfo;
  82   case StreamType::LinuxCPUInfo:
  83   case StreamType::LinuxProcStatus:
  84   case StreamType::LinuxLSBRelease:
  85   case StreamType::LinuxCMDLine:
  86   case StreamType::LinuxMaps:
  87   case StreamType::LinuxProcStat:
  88   case StreamType::LinuxProcUptime:
  89     return StreamKind::TextContent;
  90   case StreamType::ThreadList:
  91     return StreamKind::ThreadList;
  92   default:
  93     return StreamKind::RawContent;
  94   }
  95 }
  96
  97 std::unique_ptr<Stream> Stream::create(StreamType Type) {
  98   StreamKind Kind = getKind(Type);
  99   switch (Kind) {
 100   case StreamKind::Exception:
 101     return std::make_unique<ExceptionStream>();
 102   case StreamKind::MemoryInfoList:
 103     return std::make_unique<MemoryInfoListStream>();
 104   case StreamKind::MemoryList:
 105     return std::make_unique<MemoryListStream>();
 106   case StreamKind::ModuleList:
 107     return std::make_unique<ModuleListStream>();
 108   case StreamKind::RawContent:
 109     return std::make_unique<RawContentStream>(Type);
 110   case StreamKind::SystemInfo:
 111     return std::make_unique<SystemInfoStream>();
 112   case StreamKind::TextContent:
 113     return std::make_unique<TextContentStream>(Type);
 114   case StreamKind::ThreadList:
 115     return std::make_unique<ThreadListStream>();
 116   }
 117   llvm_unreachable("Unhandled stream kind!");
 118 }
 119
 120 void yaml::ScalarBitSetTraits<MemoryProtection>::bitset(
 121     IO &IO, MemoryProtection &Protect) {
 122 #define HANDLE_MDMP_PROTECT(CODE, NAME, NATIVENAME)                            \
 123   IO.bitSetCase(Protect, #NATIVENAME, MemoryProtection::NAME);
 124 #include "llvm/BinaryFormat/MinidumpConstants.def"
 125 }
 126
 127 void yaml::ScalarBitSetTraits<MemoryState>::bitset(IO &IO, MemoryState &State) {
 128 #define HANDLE_MDMP_MEMSTATE(CODE, NAME, NATIVENAME)                           \
 129   IO.bitSetCase(State, #NATIVENAME, MemoryState::NAME);
 130 #include "llvm/BinaryFormat/MinidumpConstants.def"
 131 }
 132
 133 void yaml::ScalarBitSetTraits<MemoryType>::bitset(IO &IO, MemoryType &Type) {
 134 #define HANDLE_MDMP_MEMTYPE(CODE, NAME, NATIVENAME)                            \
 135   IO.bitSetCase(Type, #NATIVENAME, MemoryType::NAME);
 136 #include "llvm/BinaryFormat/MinidumpConstants.def"
 137 }
 138
 139 void yaml::ScalarEnumerationTraits<ProcessorArchitecture>::enumeration(
 140     IO &IO, ProcessorArchitecture &Arch) {
 141 #define HANDLE_MDMP_ARCH(CODE, NAME)                                           \
 142   IO.enumCase(Arch, #NAME, ProcessorArchitecture::NAME);
 143 #include "llvm/BinaryFormat/MinidumpConstants.def"
 144   IO.enumFallback<Hex16>(Arch);
 145 }
 146
 147 void yaml::ScalarEnumerationTraits<OSPlatform>::enumeration(IO &IO,
 148                                                             OSPlatform &Plat) {
 149 #define HANDLE_MDMP_PLATFORM(CODE, NAME)                                       \
 150   IO.enumCase(Plat, #NAME, OSPlatform::NAME);
 151 #include "llvm/BinaryFormat/MinidumpConstants.def"
 152   IO.enumFallback<Hex32>(Plat);
 153 }
 154
 155 void yaml::ScalarEnumerationTraits<StreamType>::enumeration(IO &IO,
 156                                                             StreamType &Type) {
 157 #define HANDLE_MDMP_STREAM_TYPE(CODE, NAME)                                    \
 158   IO.enumCase(Type, #NAME, StreamType::NAME);
 159 #include "llvm/BinaryFormat/MinidumpConstants.def"
 160   IO.enumFallback<Hex32>(Type);
 161 }
 162
 163 void yaml::MappingTraits<CPUInfo::ArmInfo>::mapping(IO &IO,
 164                                                     CPUInfo::ArmInfo &Info) {
 165   mapRequiredHex(IO, "CPUID", Info.CPUID);
 166   mapOptionalHex(IO, "ELF hwcaps", Info.ElfHWCaps, 0);
 167 }
 168
 169 namespace {
 170 template <std::size_t N> struct FixedSizeHex {
 171   FixedSizeHex(uint8_t (&Storage)[N]) : Storage(Storage) {}
 172
 173   uint8_t (&Storage)[N];
 174 };
 175 } // namespace
 176
 177 namespace llvm {
 178 namespace yaml {
 179 template <std::size_t N> struct ScalarTraits<FixedSizeHex<N>> {
 180   static void output(const FixedSizeHex<N> &Fixed, void *, raw_ostream &OS) {
 181     OS << toHex(makeArrayRef(Fixed.Storage));
 182   }
 183
 184   static StringRef input(StringRef Scalar, void *, FixedSizeHex<N> &Fixed) {
 185     if (!all_of(Scalar, isHexDigit))
 186       return "Invalid hex digit in input";
 187     if (Scalar.size() < 2 * N)
 188       return "String too short";
 189     if (Scalar.size() > 2 * N)
 190       return "String too long";
 191     copy(fromHex(Scalar), Fixed.Storage);
 192     return "";
 193   }
 194
 195   static QuotingType mustQuote(StringRef S) { return QuotingType::None; }
 196 };
 197 } // namespace yaml
 198 } // namespace llvm
 199 void yaml::MappingTraits<CPUInfo::OtherInfo>::mapping(
 200     IO &IO, CPUInfo::OtherInfo &Info) {
 201   FixedSizeHex<sizeof(Info.ProcessorFeatures)> Features(Info.ProcessorFeatures);
 202   IO.mapRequired("Features", Features);
 203 }
 204
 205 namespace {
 206 /// A type which only accepts strings of a fixed size for yaml conversion.
 207 template <std::size_t N> struct FixedSizeString {
 208   FixedSizeString(char (&Storage)[N]) : Storage(Storage) {}
 209
 210   char (&Storage)[N];
 211 };
 212 } // namespace
 213
 214 namespace llvm {
 215 namespace yaml {
 216 template <std::size_t N> struct ScalarTraits<FixedSizeString<N>> {
 217   static void output(const FixedSizeString<N> &Fixed, void *, raw_ostream &OS) {
 218     OS << StringRef(Fixed.Storage, N);
 219   }
 220
 221   static StringRef input(StringRef Scalar, void *, FixedSizeString<N> &Fixed) {
 222     if (Scalar.size() < N)
 223       return "String too short";
 224     if (Scalar.size() > N)
 225       return "String too long";
 226     copy(Scalar, Fixed.Storage);
 227     return "";
 228   }
 229
 230   static QuotingType mustQuote(StringRef S) { return needsQuotes(S); }
 231 };
 232 } // namespace yaml
 233 } // namespace llvm
 234
 235 void yaml::MappingTraits<CPUInfo::X86Info>::mapping(IO &IO,
 236                                                     CPUInfo::X86Info &Info) {
 237   FixedSizeString<sizeof(Info.VendorID)> VendorID(Info.VendorID);
 238   IO.mapRequired("Vendor ID", VendorID);
 239
 240   mapRequiredHex(IO, "Version Info", Info.VersionInfo);
 241   mapRequiredHex(IO, "Feature Info", Info.FeatureInfo);
 242   mapOptionalHex(IO, "AMD Extended Features", Info.AMDExtendedFeatures, 0);
 243 }
 244
 245 void yaml::MappingTraits<MemoryInfo>::mapping(IO &IO, MemoryInfo &Info) {
 246   mapRequiredHex(IO, "Base Address", Info.BaseAddress);
 247   mapOptionalHex(IO, "Allocation Base", Info.AllocationBase, Info.BaseAddress);
 248   mapRequiredAs<MemoryProtection>(IO, "Allocation Protect",
 249                                   Info.AllocationProtect);
 250   mapOptionalHex(IO, "Reserved0", Info.Reserved0, 0);
 251   mapRequiredHex(IO, "Region Size", Info.RegionSize);
 252   mapRequiredAs<MemoryState>(IO, "State", Info.State);
 253   mapOptionalAs<MemoryProtection>(IO, "Protect", Info.Protect,
 254                                   Info.AllocationProtect);
 255   mapRequiredAs<MemoryType>(IO, "Type", Info.Type);
 256   mapOptionalHex(IO, "Reserved1", Info.Reserved1, 0);
 257 }
 258
 259 void yaml::MappingTraits<VSFixedFileInfo>::mapping(IO &IO,
 260                                                    VSFixedFileInfo &Info) {
 261   mapOptionalHex(IO, "Signature", Info.Signature, 0);
 262   mapOptionalHex(IO, "Struct Version", Info.StructVersion, 0);
 263   mapOptionalHex(IO, "File Version High", Info.FileVersionHigh, 0);
 264   mapOptionalHex(IO, "File Version Low", Info.FileVersionLow, 0);
 265   mapOptionalHex(IO, "Product Version High", Info.ProductVersionHigh, 0);
 266   mapOptionalHex(IO, "Product Version Low", Info.ProductVersionLow, 0);
 267   mapOptionalHex(IO, "File Flags Mask", Info.FileFlagsMask, 0);
 268   mapOptionalHex(IO, "File Flags", Info.FileFlags, 0);
 269   mapOptionalHex(IO, "File OS", Info.FileOS, 0);
 270   mapOptionalHex(IO, "File Type", Info.FileType, 0);
 271   mapOptionalHex(IO, "File Subtype", Info.FileSubtype, 0);
 272   mapOptionalHex(IO, "File Date High", Info.FileDateHigh, 0);
 273   mapOptionalHex(IO, "File Date Low", Info.FileDateLow, 0);
 274 }
 275
 276 void yaml::MappingTraits<ModuleListStream::entry_type>::mapping(
 277     IO &IO, ModuleListStream::entry_type &M) {
 278   mapRequiredHex(IO, "Base of Image", M.Entry.BaseOfImage);
 279   mapRequiredHex(IO, "Size of Image", M.Entry.SizeOfImage);
 280   mapOptionalHex(IO, "Checksum", M.Entry.Checksum, 0);
 281   mapOptional(IO, "Time Date Stamp", M.Entry.TimeDateStamp, 0);
 282   IO.mapRequired("Module Name", M.Name);
 283   IO.mapOptional("Version Info", M.Entry.VersionInfo, VSFixedFileInfo());
 284   IO.mapRequired("CodeView Record", M.CvRecord);
 285   IO.mapOptional("Misc Record", M.MiscRecord, yaml::BinaryRef());
 286   mapOptionalHex(IO, "Reserved0", M.Entry.Reserved0, 0);
 287   mapOptionalHex(IO, "Reserved1", M.Entry.Reserved1, 0);
 288 }
 289
 290 static void streamMapping(yaml::IO &IO, RawContentStream &Stream) {
 291   IO.mapOptional("Content", Stream.Content);
 292   IO.mapOptional("Size", Stream.Size, Stream.Content.binary_size());
 293 }
 294
 295 static StringRef streamValidate(RawContentStream &Stream) {
 296   if (Stream.Size.value < Stream.Content.binary_size())
 297     return "Stream size must be greater or equal to the content size";
 298   return "";
 299 }
 300
 301 void yaml::MappingTraits<MemoryListStream::entry_type>::mapping(
 302     IO &IO, MemoryListStream::entry_type &Range) {
 303   MappingContextTraits<MemoryDescriptor, yaml::BinaryRef>::mapping(
 304       IO, Range.Entry, Range.Content);
 305 }
 306
 307 static void streamMapping(yaml::IO &IO, MemoryInfoListStream &Stream) {
 308   IO.mapRequired("Memory Ranges", Stream.Infos);
 309 }
 310
 311 static void streamMapping(yaml::IO &IO, MemoryListStream &Stream) {
 312   IO.mapRequired("Memory Ranges", Stream.Entries);
 313 }
 314
 315 static void streamMapping(yaml::IO &IO, ModuleListStream &Stream) {
 316   IO.mapRequired("Modules", Stream.Entries);
 317 }
 318
 319 static void streamMapping(yaml::IO &IO, SystemInfoStream &Stream) {
 320   SystemInfo &Info = Stream.Info;
 321   IO.mapRequired("Processor Arch", Info.ProcessorArch);
 322   mapOptional(IO, "Processor Level", Info.ProcessorLevel, 0);
 323   mapOptional(IO, "Processor Revision", Info.ProcessorRevision, 0);
 324   IO.mapOptional("Number of Processors", Info.NumberOfProcessors, 0);
 325   IO.mapOptional("Product type", Info.ProductType, 0);
 326   mapOptional(IO, "Major Version", Info.MajorVersion, 0);
 327   mapOptional(IO, "Minor Version", Info.MinorVersion, 0);
 328   mapOptional(IO, "Build Number", Info.BuildNumber, 0);
 329   IO.mapRequired("Platform ID", Info.PlatformId);
 330   IO.mapOptional("CSD Version", Stream.CSDVersion, "");
 331   mapOptionalHex(IO, "Suite Mask", Info.SuiteMask, 0);
 332   mapOptionalHex(IO, "Reserved", Info.Reserved, 0);
 333   switch (static_cast<ProcessorArchitecture>(Info.ProcessorArch)) {
 334   case ProcessorArchitecture::X86:
 335   case ProcessorArchitecture::AMD64:
 336     IO.mapOptional("CPU", Info.CPU.X86);
 337     break;
 338   case ProcessorArchitecture::ARM:
 339   case ProcessorArchitecture::ARM64:
 340     IO.mapOptional("CPU", Info.CPU.Arm);
 341     break;
 342   default:
 343     IO.mapOptional("CPU", Info.CPU.Other);
 344     break;
 345   }
 346 }
 347
 348 static void streamMapping(yaml::IO &IO, TextContentStream &Stream) {
 349   IO.mapOptional("Text", Stream.Text);
 350 }
 351
 352 void yaml::MappingContextTraits<MemoryDescriptor, yaml::BinaryRef>::mapping(
 353     IO &IO, MemoryDescriptor &Memory, BinaryRef &Content) {
 354   mapRequiredHex(IO, "Start of Memory Range", Memory.StartOfMemoryRange);
 355   IO.mapRequired("Content", Content);
 356 }
 357
 358 void yaml::MappingTraits<ThreadListStream::entry_type>::mapping(
 359     IO &IO, ThreadListStream::entry_type &T) {
 360   mapRequiredHex(IO, "Thread Id", T.Entry.ThreadId);
 361   mapOptionalHex(IO, "Suspend Count", T.Entry.SuspendCount, 0);
 362   mapOptionalHex(IO, "Priority Class", T.Entry.PriorityClass, 0);
 363   mapOptionalHex(IO, "Priority", T.Entry.Priority, 0);
 364   mapOptionalHex(IO, "Environment Block", T.Entry.EnvironmentBlock, 0);
 365   IO.mapRequired("Context", T.Context);
 366   IO.mapRequired("Stack", T.Entry.Stack, T.Stack);
 367 }
 368
 369 static void streamMapping(yaml::IO &IO, ThreadListStream &Stream) {
 370   IO.mapRequired("Threads", Stream.Entries);
 371 }
 372
 373 static void streamMapping(yaml::IO &IO, MinidumpYAML::ExceptionStream &Stream) {
 374   mapRequiredHex(IO, "Thread ID", Stream.MDExceptionStream.ThreadId);
 375   IO.mapRequired("Exception Record", Stream.MDExceptionStream.ExceptionRecord);
 376   IO.mapRequired("Thread Context", Stream.ThreadContext);
 377 }
 378
 379 void yaml::MappingTraits<minidump::Exception>::mapping(
 380     yaml::IO &IO, minidump::Exception &Exception) {
 381   mapRequiredHex(IO, "Exception Code", Exception.ExceptionCode);
 382   mapOptionalHex(IO, "Exception Flags", Exception.ExceptionFlags, 0);
 383   mapOptionalHex(IO, "Exception Record", Exception.ExceptionRecord, 0);
 384   mapOptionalHex(IO, "Exception Address", Exception.ExceptionAddress, 0);
 385   mapOptional(IO, "Number of Parameters", Exception.NumberParameters, 0);
 386
 387   for (size_t Index = 0; Index < Exception.MaxParameters; ++Index) {
 388     SmallString<16> Name("Parameter ");
 389     Twine(Index).toVector(Name);
 390     support::ulittle64_t &Field = Exception.ExceptionInformation[Index];
 391
 392     if (Index < Exception.NumberParameters)
 393       mapRequiredHex(IO, Name.c_str(), Field);
 394     else
 395       mapOptionalHex(IO, Name.c_str(), Field, 0);
 396   }
 397 }
 398
 399 void yaml::MappingTraits<std::unique_ptr<Stream>>::mapping(
 400     yaml::IO &IO, std::unique_ptr<MinidumpYAML::Stream> &S) {
 401   StreamType Type;
 402   if (IO.outputting())
 403     Type = S->Type;
 404   IO.mapRequired("Type", Type);
 405
 406   if (!IO.outputting())
 407     S = MinidumpYAML::Stream::create(Type);
 408   switch (S->Kind) {
 409   case MinidumpYAML::Stream::StreamKind::Exception:
 410     streamMapping(IO, llvm::cast<MinidumpYAML::ExceptionStream>(*S));
 411     break;
 412   case MinidumpYAML::Stream::StreamKind::MemoryInfoList:
 413     streamMapping(IO, llvm::cast<MemoryInfoListStream>(*S));
 414     break;
 415   case MinidumpYAML::Stream::StreamKind::MemoryList:
 416     streamMapping(IO, llvm::cast<MemoryListStream>(*S));
 417     break;
 418   case MinidumpYAML::Stream::StreamKind::ModuleList:
 419     streamMapping(IO, llvm::cast<ModuleListStream>(*S));
 420     break;
 421   case MinidumpYAML::Stream::StreamKind::RawContent:
 422     streamMapping(IO, llvm::cast<RawContentStream>(*S));
 423     break;
 424   case MinidumpYAML::Stream::StreamKind::SystemInfo:
 425     streamMapping(IO, llvm::cast<SystemInfoStream>(*S));
 426     break;
 427   case MinidumpYAML::Stream::StreamKind::TextContent:
 428     streamMapping(IO, llvm::cast<TextContentStream>(*S));
 429     break;
 430   case MinidumpYAML::Stream::StreamKind::ThreadList:
 431     streamMapping(IO, llvm::cast<ThreadListStream>(*S));
 432     break;
 433   }
 434 }
 435
 436 StringRef yaml::MappingTraits<std::unique_ptr<Stream>>::validate(
 437     yaml::IO &IO, std::unique_ptr<MinidumpYAML::Stream> &S) {
 438   switch (S->Kind) {
 439   case MinidumpYAML::Stream::StreamKind::RawContent:
 440     return streamValidate(cast<RawContentStream>(*S));
 441   case MinidumpYAML::Stream::StreamKind::Exception:
 442   case MinidumpYAML::Stream::StreamKind::MemoryInfoList:
 443   case MinidumpYAML::Stream::StreamKind::MemoryList:
 444   case MinidumpYAML::Stream::StreamKind::ModuleList:
 445   case MinidumpYAML::Stream::StreamKind::SystemInfo:
 446   case MinidumpYAML::Stream::StreamKind::TextContent:
 447   case MinidumpYAML::Stream::StreamKind::ThreadList:
 448     return "";
 449   }
 450   llvm_unreachable("Fully covered switch above!");
 451 }
 452
 453 void yaml::MappingTraits<Object>::mapping(IO &IO, Object &O) {
 454   IO.mapTag("!minidump", true);
 455   mapOptionalHex(IO, "Signature", O.Header.Signature, Header::MagicSignature);
 456   mapOptionalHex(IO, "Version", O.Header.Version, Header::MagicVersion);
 457   mapOptionalHex(IO, "Flags", O.Header.Flags, 0);
 458   IO.mapRequired("Streams", O.Streams);
 459 }
 460
 461 Expected<std::unique_ptr<Stream>>
 462 Stream::create(const Directory &StreamDesc, const object::MinidumpFile &File) {
 463   StreamKind Kind = getKind(StreamDesc.Type);
 464   switch (Kind) {
 465   case StreamKind::Exception: {
 466     Expected<const minidump::ExceptionStream &> ExpectedExceptionStream =
 467         File.getExceptionStream();
 468     if (!ExpectedExceptionStream)
 469       return ExpectedExceptionStream.takeError();
 470     Expected<ArrayRef<uint8_t>> ExpectedThreadContext =
 471         File.getRawData(ExpectedExceptionStream->ThreadContext);
 472     if (!ExpectedThreadContext)
 473       return ExpectedThreadContext.takeError();
 474     return std::make_unique<ExceptionStream>(*ExpectedExceptionStream,
 475                                              *ExpectedThreadContext);
 476   }
 477   case StreamKind::MemoryInfoList: {
 478     if (auto ExpectedList = File.getMemoryInfoList())
 479       return std::make_unique<MemoryInfoListStream>(*ExpectedList);
 480     else
 481       return ExpectedList.takeError();
 482   }
 483   case StreamKind::MemoryList: {
 484     auto ExpectedList = File.getMemoryList();
 485     if (!ExpectedList)
 486       return ExpectedList.takeError();
 487     std::vector<MemoryListStream::entry_type> Ranges;
 488     for (const MemoryDescriptor &MD : *ExpectedList) {
 489       auto ExpectedContent = File.getRawData(MD.Memory);
 490       if (!ExpectedContent)
 491         return ExpectedContent.takeError();
 492       Ranges.push_back({MD, *ExpectedContent});
 493     }
 494     return std::make_unique<MemoryListStream>(std::move(Ranges));
 495   }
 496   case StreamKind::ModuleList: {
 497     auto ExpectedList = File.getModuleList();
 498     if (!ExpectedList)
 499       return ExpectedList.takeError();
 500     std::vector<ModuleListStream::entry_type> Modules;
 501     for (const Module &M : *ExpectedList) {
 502       auto ExpectedName = File.getString(M.ModuleNameRVA);
 503       if (!ExpectedName)
 504         return ExpectedName.takeError();
 505       auto ExpectedCv = File.getRawData(M.CvRecord);
 506       if (!ExpectedCv)
 507         return ExpectedCv.takeError();
 508       auto ExpectedMisc = File.getRawData(M.MiscRecord);
 509       if (!ExpectedMisc)
 510         return ExpectedMisc.takeError();
 511       Modules.push_back(
 512           {M, std::move(*ExpectedName), *ExpectedCv, *ExpectedMisc});
 513     }
 514     return std::make_unique<ModuleListStream>(std::move(Modules));
 515   }
 516   case StreamKind::RawContent:
 517     return std::make_unique<RawContentStream>(StreamDesc.Type,
 518                                                File.getRawStream(StreamDesc));
 519   case StreamKind::SystemInfo: {
 520     auto ExpectedInfo = File.getSystemInfo();
 521     if (!ExpectedInfo)
 522       return ExpectedInfo.takeError();
 523     auto ExpectedCSDVersion = File.getString(ExpectedInfo->CSDVersionRVA);
 524     if (!ExpectedCSDVersion)
 525       return ExpectedInfo.takeError();
 526     return std::make_unique<SystemInfoStream>(*ExpectedInfo,
 527                                                std::move(*ExpectedCSDVersion));
 528   }
 529   case StreamKind::TextContent:
 530     return std::make_unique<TextContentStream>(
 531         StreamDesc.Type, toStringRef(File.getRawStream(StreamDesc)));
 532   case StreamKind::ThreadList: {
 533     auto ExpectedList = File.getThreadList();
 534     if (!ExpectedList)
 535       return ExpectedList.takeError();
 536     std::vector<ThreadListStream::entry_type> Threads;
 537     for (const Thread &T : *ExpectedList) {
 538       auto ExpectedStack = File.getRawData(T.Stack.Memory);
 539       if (!ExpectedStack)
 540         return ExpectedStack.takeError();
 541       auto ExpectedContext = File.getRawData(T.Context);
 542       if (!ExpectedContext)
 543         return ExpectedContext.takeError();
 544       Threads.push_back({T, *ExpectedStack, *ExpectedContext});
 545     }
 546     return std::make_unique<ThreadListStream>(std::move(Threads));
 547   }
 548   }
 549   llvm_unreachable("Unhandled stream kind!");
 550 }
 551
 552 Expected<Object> Object::create(const object::MinidumpFile &File) {
 553   std::vector<std::unique_ptr<Stream>> Streams;
 554   Streams.reserve(File.streams().size());
 555   for (const Directory &StreamDesc : File.streams()) {
 556     auto ExpectedStream = Stream::create(StreamDesc, File);
 557     if (!ExpectedStream)
 558       return ExpectedStream.takeError();
 559     Streams.push_back(std::move(*ExpectedStream));
 560   }
 561   return Object(File.header(), std::move(Streams));
 562 }