1 //===-- COFFDumper.cpp - COFF-specific dumper -------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 /// 10 /// \file 11 /// \brief This file implements the COFF-specific dumper for llvm-readobj. 12 /// 13 //===----------------------------------------------------------------------===// 14 15 #include "llvm-readobj.h" 16 #include "ARMWinEHPrinter.h" 17 #include "Error.h" 18 #include "ObjDumper.h" 19 #include "StackMapPrinter.h" 20 #include "StreamWriter.h" 21 #include "Win64EHDumper.h" 22 #include "llvm/ADT/DenseMap.h" 23 #include "llvm/ADT/SmallString.h" 24 #include "llvm/ADT/StringExtras.h" 25 #include "llvm/Object/COFF.h" 26 #include "llvm/Object/ObjectFile.h" 27 #include "llvm/Support/COFF.h" 28 #include "llvm/Support/Casting.h" 29 #include "llvm/Support/Compiler.h" 30 #include "llvm/Support/DataExtractor.h" 31 #include "llvm/Support/Format.h" 32 #include "llvm/Support/SourceMgr.h" 33 #include "llvm/Support/Win64EH.h" 34 #include "llvm/Support/raw_ostream.h" 35 #include <algorithm> 36 #include <cstring> 37 #include <system_error> 38 #include <time.h> 39 40 using namespace llvm; 41 using namespace llvm::object; 42 using namespace llvm::Win64EH; 43 44 namespace { 45 46 class COFFDumper : public ObjDumper { 47 public: 48 COFFDumper(const llvm::object::COFFObjectFile *Obj, StreamWriter& Writer) 49 : ObjDumper(Writer) 50 , Obj(Obj) { 51 } 52 53 void printFileHeaders() override; 54 void printSections() override; 55 void printRelocations() override; 56 void printSymbols() override; 57 void printDynamicSymbols() override; 58 void printUnwindInfo() override; 59 void printCOFFImports() override; 60 void printCOFFExports() override; 61 void printCOFFDirectives() override; 62 void printCOFFBaseReloc() override; 63 void printCodeViewDebugInfo() override; 64 void printStackMap() const override; 65 private: 66 void printSymbol(const SymbolRef &Sym); 67 void printRelocation(const SectionRef &Section, const RelocationRef &Reloc); 68 void printDataDirectory(uint32_t Index, const std::string &FieldName); 69 70 void printDOSHeader(const dos_header *DH); 71 template <class PEHeader> void printPEHeader(const PEHeader *Hdr); 72 void printBaseOfDataField(const pe32_header *Hdr); 73 void printBaseOfDataField(const pe32plus_header *Hdr); 74 75 void printCodeViewSection(const SectionRef &Section); 76 77 void printCodeViewSymbolsSubsection(StringRef Subsection, 78 const SectionRef &Section, 79 uint32_t Offset); 80 81 void cacheRelocations(); 82 83 std::error_code resolveSymbol(const coff_section *Section, uint64_t Offset, 84 SymbolRef &Sym); 85 std::error_code resolveSymbolName(const coff_section *Section, 86 uint64_t Offset, StringRef &Name); 87 void printImportedSymbols(iterator_range<imported_symbol_iterator> Range); 88 void printDelayImportedSymbols( 89 const DelayImportDirectoryEntryRef &I, 90 iterator_range<imported_symbol_iterator> Range); 91 92 typedef DenseMap<const coff_section*, std::vector<RelocationRef> > RelocMapTy; 93 94 const llvm::object::COFFObjectFile *Obj; 95 bool RelocCached = false; 96 RelocMapTy RelocMap; 97 StringRef CVFileIndexToStringOffsetTable; 98 StringRef CVStringTable; 99 }; 100 101 } // namespace 102 103 104 namespace llvm { 105 106 std::error_code createCOFFDumper(const object::ObjectFile *Obj, 107 StreamWriter &Writer, 108 std::unique_ptr<ObjDumper> &Result) { 109 const COFFObjectFile *COFFObj = dyn_cast<COFFObjectFile>(Obj); 110 if (!COFFObj) 111 return readobj_error::unsupported_obj_file_format; 112 113 Result.reset(new COFFDumper(COFFObj, Writer)); 114 return readobj_error::success; 115 } 116 117 } // namespace llvm 118 119 // Given a a section and an offset into this section the function returns the 120 // symbol used for the relocation at the offset. 121 std::error_code COFFDumper::resolveSymbol(const coff_section *Section, 122 uint64_t Offset, SymbolRef &Sym) { 123 cacheRelocations(); 124 const auto &Relocations = RelocMap[Section]; 125 for (const auto &Relocation : Relocations) { 126 uint64_t RelocationOffset = Relocation.getOffset(); 127 128 if (RelocationOffset == Offset) { 129 Sym = *Relocation.getSymbol(); 130 return readobj_error::success; 131 } 132 } 133 return readobj_error::unknown_symbol; 134 } 135 136 // Given a section and an offset into this section the function returns the name 137 // of the symbol used for the relocation at the offset. 138 std::error_code COFFDumper::resolveSymbolName(const coff_section *Section, 139 uint64_t Offset, 140 StringRef &Name) { 141 SymbolRef Symbol; 142 if (std::error_code EC = resolveSymbol(Section, Offset, Symbol)) 143 return EC; 144 ErrorOr<StringRef> NameOrErr = Symbol.getName(); 145 if (std::error_code EC = NameOrErr.getError()) 146 return EC; 147 Name = *NameOrErr; 148 return std::error_code(); 149 } 150 151 static const EnumEntry<COFF::MachineTypes> ImageFileMachineType[] = { 152 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_UNKNOWN ), 153 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_AM33 ), 154 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_AMD64 ), 155 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_ARM ), 156 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_ARMNT ), 157 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_EBC ), 158 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_I386 ), 159 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_IA64 ), 160 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_M32R ), 161 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_MIPS16 ), 162 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_MIPSFPU ), 163 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_MIPSFPU16), 164 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_POWERPC ), 165 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_POWERPCFP), 166 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_R4000 ), 167 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH3 ), 168 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH3DSP ), 169 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH4 ), 170 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH5 ), 171 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_THUMB ), 172 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_WCEMIPSV2) 173 }; 174 175 static const EnumEntry<COFF::Characteristics> ImageFileCharacteristics[] = { 176 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_RELOCS_STRIPPED ), 177 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_EXECUTABLE_IMAGE ), 178 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_LINE_NUMS_STRIPPED ), 179 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_LOCAL_SYMS_STRIPPED ), 180 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_AGGRESSIVE_WS_TRIM ), 181 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_LARGE_ADDRESS_AWARE ), 182 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_BYTES_REVERSED_LO ), 183 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_32BIT_MACHINE ), 184 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_DEBUG_STRIPPED ), 185 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP), 186 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_NET_RUN_FROM_SWAP ), 187 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_SYSTEM ), 188 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_DLL ), 189 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_UP_SYSTEM_ONLY ), 190 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_BYTES_REVERSED_HI ) 191 }; 192 193 static const EnumEntry<COFF::WindowsSubsystem> PEWindowsSubsystem[] = { 194 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_UNKNOWN ), 195 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_NATIVE ), 196 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_WINDOWS_GUI ), 197 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_WINDOWS_CUI ), 198 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_POSIX_CUI ), 199 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_WINDOWS_CE_GUI ), 200 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_APPLICATION ), 201 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER), 202 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER ), 203 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_ROM ), 204 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_XBOX ), 205 }; 206 207 static const EnumEntry<COFF::DLLCharacteristics> PEDLLCharacteristics[] = { 208 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA ), 209 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE ), 210 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY ), 211 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NX_COMPAT ), 212 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_ISOLATION ), 213 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_SEH ), 214 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_BIND ), 215 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_APPCONTAINER ), 216 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_WDM_DRIVER ), 217 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_GUARD_CF ), 218 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_TERMINAL_SERVER_AWARE), 219 }; 220 221 static const EnumEntry<COFF::SectionCharacteristics> 222 ImageSectionCharacteristics[] = { 223 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_TYPE_NOLOAD ), 224 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_TYPE_NO_PAD ), 225 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_CNT_CODE ), 226 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_CNT_INITIALIZED_DATA ), 227 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_CNT_UNINITIALIZED_DATA), 228 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_OTHER ), 229 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_INFO ), 230 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_REMOVE ), 231 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_COMDAT ), 232 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_GPREL ), 233 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_PURGEABLE ), 234 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_16BIT ), 235 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_LOCKED ), 236 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_PRELOAD ), 237 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_1BYTES ), 238 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_2BYTES ), 239 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_4BYTES ), 240 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_8BYTES ), 241 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_16BYTES ), 242 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_32BYTES ), 243 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_64BYTES ), 244 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_128BYTES ), 245 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_256BYTES ), 246 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_512BYTES ), 247 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_1024BYTES ), 248 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_2048BYTES ), 249 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_4096BYTES ), 250 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_8192BYTES ), 251 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_NRELOC_OVFL ), 252 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_DISCARDABLE ), 253 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_NOT_CACHED ), 254 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_NOT_PAGED ), 255 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_SHARED ), 256 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_EXECUTE ), 257 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_READ ), 258 LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_WRITE ) 259 }; 260 261 static const EnumEntry<COFF::SymbolBaseType> ImageSymType[] = { 262 { "Null" , COFF::IMAGE_SYM_TYPE_NULL }, 263 { "Void" , COFF::IMAGE_SYM_TYPE_VOID }, 264 { "Char" , COFF::IMAGE_SYM_TYPE_CHAR }, 265 { "Short" , COFF::IMAGE_SYM_TYPE_SHORT }, 266 { "Int" , COFF::IMAGE_SYM_TYPE_INT }, 267 { "Long" , COFF::IMAGE_SYM_TYPE_LONG }, 268 { "Float" , COFF::IMAGE_SYM_TYPE_FLOAT }, 269 { "Double", COFF::IMAGE_SYM_TYPE_DOUBLE }, 270 { "Struct", COFF::IMAGE_SYM_TYPE_STRUCT }, 271 { "Union" , COFF::IMAGE_SYM_TYPE_UNION }, 272 { "Enum" , COFF::IMAGE_SYM_TYPE_ENUM }, 273 { "MOE" , COFF::IMAGE_SYM_TYPE_MOE }, 274 { "Byte" , COFF::IMAGE_SYM_TYPE_BYTE }, 275 { "Word" , COFF::IMAGE_SYM_TYPE_WORD }, 276 { "UInt" , COFF::IMAGE_SYM_TYPE_UINT }, 277 { "DWord" , COFF::IMAGE_SYM_TYPE_DWORD } 278 }; 279 280 static const EnumEntry<COFF::SymbolComplexType> ImageSymDType[] = { 281 { "Null" , COFF::IMAGE_SYM_DTYPE_NULL }, 282 { "Pointer" , COFF::IMAGE_SYM_DTYPE_POINTER }, 283 { "Function", COFF::IMAGE_SYM_DTYPE_FUNCTION }, 284 { "Array" , COFF::IMAGE_SYM_DTYPE_ARRAY } 285 }; 286 287 static const EnumEntry<COFF::SymbolStorageClass> ImageSymClass[] = { 288 { "EndOfFunction" , COFF::IMAGE_SYM_CLASS_END_OF_FUNCTION }, 289 { "Null" , COFF::IMAGE_SYM_CLASS_NULL }, 290 { "Automatic" , COFF::IMAGE_SYM_CLASS_AUTOMATIC }, 291 { "External" , COFF::IMAGE_SYM_CLASS_EXTERNAL }, 292 { "Static" , COFF::IMAGE_SYM_CLASS_STATIC }, 293 { "Register" , COFF::IMAGE_SYM_CLASS_REGISTER }, 294 { "ExternalDef" , COFF::IMAGE_SYM_CLASS_EXTERNAL_DEF }, 295 { "Label" , COFF::IMAGE_SYM_CLASS_LABEL }, 296 { "UndefinedLabel" , COFF::IMAGE_SYM_CLASS_UNDEFINED_LABEL }, 297 { "MemberOfStruct" , COFF::IMAGE_SYM_CLASS_MEMBER_OF_STRUCT }, 298 { "Argument" , COFF::IMAGE_SYM_CLASS_ARGUMENT }, 299 { "StructTag" , COFF::IMAGE_SYM_CLASS_STRUCT_TAG }, 300 { "MemberOfUnion" , COFF::IMAGE_SYM_CLASS_MEMBER_OF_UNION }, 301 { "UnionTag" , COFF::IMAGE_SYM_CLASS_UNION_TAG }, 302 { "TypeDefinition" , COFF::IMAGE_SYM_CLASS_TYPE_DEFINITION }, 303 { "UndefinedStatic", COFF::IMAGE_SYM_CLASS_UNDEFINED_STATIC }, 304 { "EnumTag" , COFF::IMAGE_SYM_CLASS_ENUM_TAG }, 305 { "MemberOfEnum" , COFF::IMAGE_SYM_CLASS_MEMBER_OF_ENUM }, 306 { "RegisterParam" , COFF::IMAGE_SYM_CLASS_REGISTER_PARAM }, 307 { "BitField" , COFF::IMAGE_SYM_CLASS_BIT_FIELD }, 308 { "Block" , COFF::IMAGE_SYM_CLASS_BLOCK }, 309 { "Function" , COFF::IMAGE_SYM_CLASS_FUNCTION }, 310 { "EndOfStruct" , COFF::IMAGE_SYM_CLASS_END_OF_STRUCT }, 311 { "File" , COFF::IMAGE_SYM_CLASS_FILE }, 312 { "Section" , COFF::IMAGE_SYM_CLASS_SECTION }, 313 { "WeakExternal" , COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL }, 314 { "CLRToken" , COFF::IMAGE_SYM_CLASS_CLR_TOKEN } 315 }; 316 317 static const EnumEntry<COFF::COMDATType> ImageCOMDATSelect[] = { 318 { "NoDuplicates", COFF::IMAGE_COMDAT_SELECT_NODUPLICATES }, 319 { "Any" , COFF::IMAGE_COMDAT_SELECT_ANY }, 320 { "SameSize" , COFF::IMAGE_COMDAT_SELECT_SAME_SIZE }, 321 { "ExactMatch" , COFF::IMAGE_COMDAT_SELECT_EXACT_MATCH }, 322 { "Associative" , COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE }, 323 { "Largest" , COFF::IMAGE_COMDAT_SELECT_LARGEST }, 324 { "Newest" , COFF::IMAGE_COMDAT_SELECT_NEWEST } 325 }; 326 327 static const EnumEntry<COFF::WeakExternalCharacteristics> 328 WeakExternalCharacteristics[] = { 329 { "NoLibrary", COFF::IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY }, 330 { "Library" , COFF::IMAGE_WEAK_EXTERN_SEARCH_LIBRARY }, 331 { "Alias" , COFF::IMAGE_WEAK_EXTERN_SEARCH_ALIAS } 332 }; 333 334 template <typename T> 335 static std::error_code getSymbolAuxData(const COFFObjectFile *Obj, 336 COFFSymbolRef Symbol, 337 uint8_t AuxSymbolIdx, const T *&Aux) { 338 ArrayRef<uint8_t> AuxData = Obj->getSymbolAuxData(Symbol); 339 AuxData = AuxData.slice(AuxSymbolIdx * Obj->getSymbolTableEntrySize()); 340 Aux = reinterpret_cast<const T*>(AuxData.data()); 341 return readobj_error::success; 342 } 343 344 void COFFDumper::cacheRelocations() { 345 if (RelocCached) 346 return; 347 RelocCached = true; 348 349 for (const SectionRef &S : Obj->sections()) { 350 const coff_section *Section = Obj->getCOFFSection(S); 351 352 for (const RelocationRef &Reloc : S.relocations()) 353 RelocMap[Section].push_back(Reloc); 354 355 // Sort relocations by address. 356 std::sort(RelocMap[Section].begin(), RelocMap[Section].end(), 357 relocAddressLess); 358 } 359 } 360 361 void COFFDumper::printDataDirectory(uint32_t Index, const std::string &FieldName) { 362 const data_directory *Data; 363 if (Obj->getDataDirectory(Index, Data)) 364 return; 365 W.printHex(FieldName + "RVA", Data->RelativeVirtualAddress); 366 W.printHex(FieldName + "Size", Data->Size); 367 } 368 369 void COFFDumper::printFileHeaders() { 370 time_t TDS = Obj->getTimeDateStamp(); 371 char FormattedTime[20] = { }; 372 strftime(FormattedTime, 20, "%Y-%m-%d %H:%M:%S", gmtime(&TDS)); 373 374 { 375 DictScope D(W, "ImageFileHeader"); 376 W.printEnum ("Machine", Obj->getMachine(), 377 makeArrayRef(ImageFileMachineType)); 378 W.printNumber("SectionCount", Obj->getNumberOfSections()); 379 W.printHex ("TimeDateStamp", FormattedTime, Obj->getTimeDateStamp()); 380 W.printHex ("PointerToSymbolTable", Obj->getPointerToSymbolTable()); 381 W.printNumber("SymbolCount", Obj->getNumberOfSymbols()); 382 W.printNumber("OptionalHeaderSize", Obj->getSizeOfOptionalHeader()); 383 W.printFlags ("Characteristics", Obj->getCharacteristics(), 384 makeArrayRef(ImageFileCharacteristics)); 385 } 386 387 // Print PE header. This header does not exist if this is an object file and 388 // not an executable. 389 const pe32_header *PEHeader = nullptr; 390 error(Obj->getPE32Header(PEHeader)); 391 if (PEHeader) 392 printPEHeader<pe32_header>(PEHeader); 393 394 const pe32plus_header *PEPlusHeader = nullptr; 395 error(Obj->getPE32PlusHeader(PEPlusHeader)); 396 if (PEPlusHeader) 397 printPEHeader<pe32plus_header>(PEPlusHeader); 398 399 if (const dos_header *DH = Obj->getDOSHeader()) 400 printDOSHeader(DH); 401 } 402 403 void COFFDumper::printDOSHeader(const dos_header *DH) { 404 DictScope D(W, "DOSHeader"); 405 W.printString("Magic", StringRef(DH->Magic, sizeof(DH->Magic))); 406 W.printNumber("UsedBytesInTheLastPage", DH->UsedBytesInTheLastPage); 407 W.printNumber("FileSizeInPages", DH->FileSizeInPages); 408 W.printNumber("NumberOfRelocationItems", DH->NumberOfRelocationItems); 409 W.printNumber("HeaderSizeInParagraphs", DH->HeaderSizeInParagraphs); 410 W.printNumber("MinimumExtraParagraphs", DH->MinimumExtraParagraphs); 411 W.printNumber("MaximumExtraParagraphs", DH->MaximumExtraParagraphs); 412 W.printNumber("InitialRelativeSS", DH->InitialRelativeSS); 413 W.printNumber("InitialSP", DH->InitialSP); 414 W.printNumber("Checksum", DH->Checksum); 415 W.printNumber("InitialIP", DH->InitialIP); 416 W.printNumber("InitialRelativeCS", DH->InitialRelativeCS); 417 W.printNumber("AddressOfRelocationTable", DH->AddressOfRelocationTable); 418 W.printNumber("OverlayNumber", DH->OverlayNumber); 419 W.printNumber("OEMid", DH->OEMid); 420 W.printNumber("OEMinfo", DH->OEMinfo); 421 W.printNumber("AddressOfNewExeHeader", DH->AddressOfNewExeHeader); 422 } 423 424 template <class PEHeader> 425 void COFFDumper::printPEHeader(const PEHeader *Hdr) { 426 DictScope D(W, "ImageOptionalHeader"); 427 W.printNumber("MajorLinkerVersion", Hdr->MajorLinkerVersion); 428 W.printNumber("MinorLinkerVersion", Hdr->MinorLinkerVersion); 429 W.printNumber("SizeOfCode", Hdr->SizeOfCode); 430 W.printNumber("SizeOfInitializedData", Hdr->SizeOfInitializedData); 431 W.printNumber("SizeOfUninitializedData", Hdr->SizeOfUninitializedData); 432 W.printHex ("AddressOfEntryPoint", Hdr->AddressOfEntryPoint); 433 W.printHex ("BaseOfCode", Hdr->BaseOfCode); 434 printBaseOfDataField(Hdr); 435 W.printHex ("ImageBase", Hdr->ImageBase); 436 W.printNumber("SectionAlignment", Hdr->SectionAlignment); 437 W.printNumber("FileAlignment", Hdr->FileAlignment); 438 W.printNumber("MajorOperatingSystemVersion", 439 Hdr->MajorOperatingSystemVersion); 440 W.printNumber("MinorOperatingSystemVersion", 441 Hdr->MinorOperatingSystemVersion); 442 W.printNumber("MajorImageVersion", Hdr->MajorImageVersion); 443 W.printNumber("MinorImageVersion", Hdr->MinorImageVersion); 444 W.printNumber("MajorSubsystemVersion", Hdr->MajorSubsystemVersion); 445 W.printNumber("MinorSubsystemVersion", Hdr->MinorSubsystemVersion); 446 W.printNumber("SizeOfImage", Hdr->SizeOfImage); 447 W.printNumber("SizeOfHeaders", Hdr->SizeOfHeaders); 448 W.printEnum ("Subsystem", Hdr->Subsystem, makeArrayRef(PEWindowsSubsystem)); 449 W.printFlags ("Characteristics", Hdr->DLLCharacteristics, 450 makeArrayRef(PEDLLCharacteristics)); 451 W.printNumber("SizeOfStackReserve", Hdr->SizeOfStackReserve); 452 W.printNumber("SizeOfStackCommit", Hdr->SizeOfStackCommit); 453 W.printNumber("SizeOfHeapReserve", Hdr->SizeOfHeapReserve); 454 W.printNumber("SizeOfHeapCommit", Hdr->SizeOfHeapCommit); 455 W.printNumber("NumberOfRvaAndSize", Hdr->NumberOfRvaAndSize); 456 457 if (Hdr->NumberOfRvaAndSize > 0) { 458 DictScope D(W, "DataDirectory"); 459 static const char * const directory[] = { 460 "ExportTable", "ImportTable", "ResourceTable", "ExceptionTable", 461 "CertificateTable", "BaseRelocationTable", "Debug", "Architecture", 462 "GlobalPtr", "TLSTable", "LoadConfigTable", "BoundImport", "IAT", 463 "DelayImportDescriptor", "CLRRuntimeHeader", "Reserved" 464 }; 465 466 for (uint32_t i = 0; i < Hdr->NumberOfRvaAndSize; ++i) { 467 printDataDirectory(i, directory[i]); 468 } 469 } 470 } 471 472 void COFFDumper::printBaseOfDataField(const pe32_header *Hdr) { 473 W.printHex("BaseOfData", Hdr->BaseOfData); 474 } 475 476 void COFFDumper::printBaseOfDataField(const pe32plus_header *) {} 477 478 void COFFDumper::printCodeViewDebugInfo() { 479 for (const SectionRef &S : Obj->sections()) { 480 StringRef SecName; 481 error(S.getName(SecName)); 482 if (SecName == ".debug$S") 483 printCodeViewSection(S); 484 } 485 } 486 487 void COFFDumper::printCodeViewSection(const SectionRef &Section) { 488 StringRef Data; 489 error(Section.getContents(Data)); 490 491 SmallVector<StringRef, 10> FunctionNames; 492 StringMap<StringRef> FunctionLineTables; 493 494 ListScope D(W, "CodeViewDebugInfo"); 495 { 496 // FIXME: Add more offset correctness checks. 497 DataExtractor DE(Data, true, 4); 498 uint32_t Offset = 0, 499 Magic = DE.getU32(&Offset); 500 W.printHex("Magic", Magic); 501 if (Magic != COFF::DEBUG_SECTION_MAGIC) { 502 error(object_error::parse_failed); 503 return; 504 } 505 506 bool Finished = false; 507 while (DE.isValidOffset(Offset) && !Finished) { 508 // The section consists of a number of subsection in the following format: 509 // |Type|PayloadSize|Payload...| 510 uint32_t SubSectionType = DE.getU32(&Offset), 511 PayloadSize = DE.getU32(&Offset); 512 ListScope S(W, "Subsection"); 513 W.printHex("Type", SubSectionType); 514 W.printHex("PayloadSize", PayloadSize); 515 if (PayloadSize > Data.size() - Offset) { 516 error(object_error::parse_failed); 517 return; 518 } 519 520 StringRef Contents = Data.substr(Offset, PayloadSize); 521 if (opts::CodeViewSubsectionBytes) { 522 // Print the raw contents to simplify debugging if anything goes wrong 523 // afterwards. 524 W.printBinaryBlock("Contents", Contents); 525 } 526 527 switch (SubSectionType) { 528 case COFF::DEBUG_SYMBOL_SUBSECTION: 529 printCodeViewSymbolsSubsection(Contents, Section, Offset); 530 break; 531 case COFF::DEBUG_LINE_TABLE_SUBSECTION: { 532 // Holds a PC to file:line table. Some data to parse this subsection is 533 // stored in the other subsections, so just check sanity and store the 534 // pointers for deferred processing. 535 536 if (PayloadSize < 12) { 537 // There should be at least three words to store two function 538 // relocations and size of the code. 539 error(object_error::parse_failed); 540 return; 541 } 542 543 StringRef LinkageName; 544 error(resolveSymbolName(Obj->getCOFFSection(Section), Offset, 545 LinkageName)); 546 W.printString("LinkageName", LinkageName); 547 if (FunctionLineTables.count(LinkageName) != 0) { 548 // Saw debug info for this function already? 549 error(object_error::parse_failed); 550 return; 551 } 552 553 FunctionLineTables[LinkageName] = Contents; 554 FunctionNames.push_back(LinkageName); 555 break; 556 } 557 case COFF::DEBUG_STRING_TABLE_SUBSECTION: 558 if (PayloadSize == 0 || CVStringTable.data() != nullptr || 559 Contents.back() != '\0') { 560 // Empty or duplicate or non-null-terminated subsection. 561 error(object_error::parse_failed); 562 return; 563 } 564 CVStringTable = Contents; 565 break; 566 case COFF::DEBUG_INDEX_SUBSECTION: 567 // Holds the translation table from file indices 568 // to offsets in the string table. 569 570 if (PayloadSize == 0 || 571 CVFileIndexToStringOffsetTable.data() != nullptr) { 572 // Empty or duplicate subsection. 573 error(object_error::parse_failed); 574 return; 575 } 576 CVFileIndexToStringOffsetTable = Contents; 577 break; 578 } 579 Offset += PayloadSize; 580 581 // Align the reading pointer by 4. 582 Offset += (-Offset) % 4; 583 } 584 } 585 586 // Dump the line tables now that we've read all the subsections and know all 587 // the required information. 588 for (unsigned I = 0, E = FunctionNames.size(); I != E; ++I) { 589 StringRef Name = FunctionNames[I]; 590 ListScope S(W, "FunctionLineTable"); 591 W.printString("LinkageName", Name); 592 593 DataExtractor DE(FunctionLineTables[Name], true, 4); 594 uint32_t Offset = 6; // Skip relocations. 595 uint16_t Flags = DE.getU16(&Offset); 596 W.printHex("Flags", Flags); 597 bool HasColumnInformation = 598 Flags & COFF::DEBUG_LINE_TABLES_HAVE_COLUMN_RECORDS; 599 uint32_t FunctionSize = DE.getU32(&Offset); 600 W.printHex("CodeSize", FunctionSize); 601 while (DE.isValidOffset(Offset)) { 602 // For each range of lines with the same filename, we have a segment 603 // in the line table. The filename string is accessed using double 604 // indirection to the string table subsection using the index subsection. 605 uint32_t OffsetInIndex = DE.getU32(&Offset), 606 SegmentLength = DE.getU32(&Offset), 607 FullSegmentSize = DE.getU32(&Offset); 608 609 if (FullSegmentSize != 610 12 + 8 * SegmentLength + 611 (HasColumnInformation ? 4 * SegmentLength : 0)) { 612 error(object_error::parse_failed); 613 return; 614 } 615 616 uint32_t FilenameOffset; 617 { 618 DataExtractor SDE(CVFileIndexToStringOffsetTable, true, 4); 619 uint32_t OffsetInSDE = OffsetInIndex; 620 if (!SDE.isValidOffset(OffsetInSDE)) { 621 error(object_error::parse_failed); 622 return; 623 } 624 FilenameOffset = SDE.getU32(&OffsetInSDE); 625 } 626 627 if (FilenameOffset == 0 || FilenameOffset + 1 >= CVStringTable.size() || 628 CVStringTable.data()[FilenameOffset - 1] != '\0') { 629 // Each string in an F3 subsection should be preceded by a null 630 // character. 631 error(object_error::parse_failed); 632 return; 633 } 634 635 StringRef Filename(CVStringTable.data() + FilenameOffset); 636 ListScope S(W, "FilenameSegment"); 637 W.printString("Filename", Filename); 638 for (unsigned J = 0; J != SegmentLength && DE.isValidOffset(Offset); 639 ++J) { 640 // Then go the (PC, LineNumber) pairs. The line number is stored in the 641 // least significant 31 bits of the respective word in the table. 642 uint32_t PC = DE.getU32(&Offset), 643 LineNumber = DE.getU32(&Offset) & 0x7fffffff; 644 if (PC >= FunctionSize) { 645 error(object_error::parse_failed); 646 return; 647 } 648 char Buffer[32]; 649 format("+0x%X", PC).snprint(Buffer, 32); 650 W.printNumber(Buffer, LineNumber); 651 } 652 if (HasColumnInformation) { 653 for (unsigned J = 0; J != SegmentLength && DE.isValidOffset(Offset); 654 ++J) { 655 uint16_t ColStart = DE.getU16(&Offset); 656 W.printNumber("ColStart", ColStart); 657 uint16_t ColEnd = DE.getU16(&Offset); 658 W.printNumber("ColEnd", ColEnd); 659 } 660 } 661 } 662 } 663 } 664 665 void COFFDumper::printCodeViewSymbolsSubsection(StringRef Subsection, 666 const SectionRef &Section, 667 uint32_t OffsetInSection) { 668 if (Subsection.size() == 0) { 669 error(object_error::parse_failed); 670 return; 671 } 672 DataExtractor DE(Subsection, true, 4); 673 uint32_t Offset = 0; 674 675 // Function-level subsections have "procedure start" and "procedure end" 676 // commands that should come in pairs and surround relevant info. 677 bool InFunctionScope = false; 678 while (DE.isValidOffset(Offset)) { 679 // Read subsection segments one by one. 680 uint16_t Size = DE.getU16(&Offset); 681 // The section size includes the size of the type identifier. 682 if (Size < 2 || !DE.isValidOffsetForDataOfSize(Offset, Size)) { 683 error(object_error::parse_failed); 684 return; 685 } 686 Size -= 2; 687 uint16_t Type = DE.getU16(&Offset); 688 switch (Type) { 689 case COFF::DEBUG_SYMBOL_TYPE_PROC_START: { 690 DictScope S(W, "ProcStart"); 691 if (InFunctionScope || Size < 36) { 692 error(object_error::parse_failed); 693 return; 694 } 695 InFunctionScope = true; 696 697 // We're currently interested in a limited subset of fields in this 698 // segment, just ignore the rest of the fields for now. 699 uint8_t Unused[12]; 700 DE.getU8(&Offset, Unused, 12); 701 uint32_t CodeSize = DE.getU32(&Offset); 702 DE.getU8(&Offset, Unused, 12); 703 StringRef SectionName; 704 error(resolveSymbolName(Obj->getCOFFSection(Section), 705 OffsetInSection + Offset, SectionName)); 706 Offset += 4; 707 DE.getU8(&Offset, Unused, 3); 708 StringRef DisplayName = DE.getCStr(&Offset); 709 if (!DE.isValidOffset(Offset)) { 710 error(object_error::parse_failed); 711 return; 712 } 713 W.printString("DisplayName", DisplayName); 714 W.printString("Section", SectionName); 715 W.printHex("CodeSize", CodeSize); 716 717 break; 718 } 719 case COFF::DEBUG_SYMBOL_TYPE_PROC_END: { 720 W.startLine() << "ProcEnd\n"; 721 if (!InFunctionScope || Size > 0) { 722 error(object_error::parse_failed); 723 return; 724 } 725 InFunctionScope = false; 726 break; 727 } 728 default: { 729 if (opts::CodeViewSubsectionBytes) { 730 ListScope S(W, "Record"); 731 W.printHex("Size", Size); 732 W.printHex("Type", Type); 733 734 StringRef Contents = DE.getData().substr(Offset, Size); 735 W.printBinaryBlock("Contents", Contents); 736 } 737 738 Offset += Size; 739 break; 740 } 741 } 742 } 743 744 if (InFunctionScope) 745 error(object_error::parse_failed); 746 } 747 748 void COFFDumper::printSections() { 749 ListScope SectionsD(W, "Sections"); 750 int SectionNumber = 0; 751 for (const SectionRef &Sec : Obj->sections()) { 752 ++SectionNumber; 753 const coff_section *Section = Obj->getCOFFSection(Sec); 754 755 StringRef Name; 756 error(Sec.getName(Name)); 757 758 DictScope D(W, "Section"); 759 W.printNumber("Number", SectionNumber); 760 W.printBinary("Name", Name, Section->Name); 761 W.printHex ("VirtualSize", Section->VirtualSize); 762 W.printHex ("VirtualAddress", Section->VirtualAddress); 763 W.printNumber("RawDataSize", Section->SizeOfRawData); 764 W.printHex ("PointerToRawData", Section->PointerToRawData); 765 W.printHex ("PointerToRelocations", Section->PointerToRelocations); 766 W.printHex ("PointerToLineNumbers", Section->PointerToLinenumbers); 767 W.printNumber("RelocationCount", Section->NumberOfRelocations); 768 W.printNumber("LineNumberCount", Section->NumberOfLinenumbers); 769 W.printFlags ("Characteristics", Section->Characteristics, 770 makeArrayRef(ImageSectionCharacteristics), 771 COFF::SectionCharacteristics(0x00F00000)); 772 773 if (opts::SectionRelocations) { 774 ListScope D(W, "Relocations"); 775 for (const RelocationRef &Reloc : Sec.relocations()) 776 printRelocation(Sec, Reloc); 777 } 778 779 if (opts::SectionSymbols) { 780 ListScope D(W, "Symbols"); 781 for (const SymbolRef &Symbol : Obj->symbols()) { 782 if (!Sec.containsSymbol(Symbol)) 783 continue; 784 785 printSymbol(Symbol); 786 } 787 } 788 789 if (opts::SectionData && 790 !(Section->Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA)) { 791 StringRef Data; 792 error(Sec.getContents(Data)); 793 794 W.printBinaryBlock("SectionData", Data); 795 } 796 } 797 } 798 799 void COFFDumper::printRelocations() { 800 ListScope D(W, "Relocations"); 801 802 int SectionNumber = 0; 803 for (const SectionRef &Section : Obj->sections()) { 804 ++SectionNumber; 805 StringRef Name; 806 error(Section.getName(Name)); 807 808 bool PrintedGroup = false; 809 for (const RelocationRef &Reloc : Section.relocations()) { 810 if (!PrintedGroup) { 811 W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n"; 812 W.indent(); 813 PrintedGroup = true; 814 } 815 816 printRelocation(Section, Reloc); 817 } 818 819 if (PrintedGroup) { 820 W.unindent(); 821 W.startLine() << "}\n"; 822 } 823 } 824 } 825 826 void COFFDumper::printRelocation(const SectionRef &Section, 827 const RelocationRef &Reloc) { 828 uint64_t Offset = Reloc.getOffset(); 829 uint64_t RelocType = Reloc.getType(); 830 SmallString<32> RelocName; 831 StringRef SymbolName; 832 Reloc.getTypeName(RelocName); 833 symbol_iterator Symbol = Reloc.getSymbol(); 834 if (Symbol != Obj->symbol_end()) { 835 ErrorOr<StringRef> SymbolNameOrErr = Symbol->getName(); 836 error(SymbolNameOrErr.getError()); 837 SymbolName = *SymbolNameOrErr; 838 } 839 840 if (opts::ExpandRelocs) { 841 DictScope Group(W, "Relocation"); 842 W.printHex("Offset", Offset); 843 W.printNumber("Type", RelocName, RelocType); 844 W.printString("Symbol", SymbolName.empty() ? "-" : SymbolName); 845 } else { 846 raw_ostream& OS = W.startLine(); 847 OS << W.hex(Offset) 848 << " " << RelocName 849 << " " << (SymbolName.empty() ? "-" : SymbolName) 850 << "\n"; 851 } 852 } 853 854 void COFFDumper::printSymbols() { 855 ListScope Group(W, "Symbols"); 856 857 for (const SymbolRef &Symbol : Obj->symbols()) 858 printSymbol(Symbol); 859 } 860 861 void COFFDumper::printDynamicSymbols() { ListScope Group(W, "DynamicSymbols"); } 862 863 static ErrorOr<StringRef> 864 getSectionName(const llvm::object::COFFObjectFile *Obj, int32_t SectionNumber, 865 const coff_section *Section) { 866 if (Section) { 867 StringRef SectionName; 868 if (std::error_code EC = Obj->getSectionName(Section, SectionName)) 869 return EC; 870 return SectionName; 871 } 872 if (SectionNumber == llvm::COFF::IMAGE_SYM_DEBUG) 873 return StringRef("IMAGE_SYM_DEBUG"); 874 if (SectionNumber == llvm::COFF::IMAGE_SYM_ABSOLUTE) 875 return StringRef("IMAGE_SYM_ABSOLUTE"); 876 if (SectionNumber == llvm::COFF::IMAGE_SYM_UNDEFINED) 877 return StringRef("IMAGE_SYM_UNDEFINED"); 878 return StringRef(""); 879 } 880 881 void COFFDumper::printSymbol(const SymbolRef &Sym) { 882 DictScope D(W, "Symbol"); 883 884 COFFSymbolRef Symbol = Obj->getCOFFSymbol(Sym); 885 const coff_section *Section; 886 if (std::error_code EC = Obj->getSection(Symbol.getSectionNumber(), Section)) { 887 W.startLine() << "Invalid section number: " << EC.message() << "\n"; 888 W.flush(); 889 return; 890 } 891 892 StringRef SymbolName; 893 if (Obj->getSymbolName(Symbol, SymbolName)) 894 SymbolName = ""; 895 896 StringRef SectionName = ""; 897 ErrorOr<StringRef> Res = 898 getSectionName(Obj, Symbol.getSectionNumber(), Section); 899 if (Res) 900 SectionName = *Res; 901 902 W.printString("Name", SymbolName); 903 W.printNumber("Value", Symbol.getValue()); 904 W.printNumber("Section", SectionName, Symbol.getSectionNumber()); 905 W.printEnum ("BaseType", Symbol.getBaseType(), makeArrayRef(ImageSymType)); 906 W.printEnum ("ComplexType", Symbol.getComplexType(), 907 makeArrayRef(ImageSymDType)); 908 W.printEnum ("StorageClass", Symbol.getStorageClass(), 909 makeArrayRef(ImageSymClass)); 910 W.printNumber("AuxSymbolCount", Symbol.getNumberOfAuxSymbols()); 911 912 for (uint8_t I = 0; I < Symbol.getNumberOfAuxSymbols(); ++I) { 913 if (Symbol.isFunctionDefinition()) { 914 const coff_aux_function_definition *Aux; 915 error(getSymbolAuxData(Obj, Symbol, I, Aux)); 916 917 DictScope AS(W, "AuxFunctionDef"); 918 W.printNumber("TagIndex", Aux->TagIndex); 919 W.printNumber("TotalSize", Aux->TotalSize); 920 W.printHex("PointerToLineNumber", Aux->PointerToLinenumber); 921 W.printHex("PointerToNextFunction", Aux->PointerToNextFunction); 922 923 } else if (Symbol.isAnyUndefined()) { 924 const coff_aux_weak_external *Aux; 925 error(getSymbolAuxData(Obj, Symbol, I, Aux)); 926 927 ErrorOr<COFFSymbolRef> Linked = Obj->getSymbol(Aux->TagIndex); 928 StringRef LinkedName; 929 std::error_code EC = Linked.getError(); 930 if (EC || (EC = Obj->getSymbolName(*Linked, LinkedName))) { 931 LinkedName = ""; 932 error(EC); 933 } 934 935 DictScope AS(W, "AuxWeakExternal"); 936 W.printNumber("Linked", LinkedName, Aux->TagIndex); 937 W.printEnum ("Search", Aux->Characteristics, 938 makeArrayRef(WeakExternalCharacteristics)); 939 940 } else if (Symbol.isFileRecord()) { 941 const char *FileName; 942 error(getSymbolAuxData(Obj, Symbol, I, FileName)); 943 944 DictScope AS(W, "AuxFileRecord"); 945 946 StringRef Name(FileName, Symbol.getNumberOfAuxSymbols() * 947 Obj->getSymbolTableEntrySize()); 948 W.printString("FileName", Name.rtrim(StringRef("\0", 1))); 949 break; 950 } else if (Symbol.isSectionDefinition()) { 951 const coff_aux_section_definition *Aux; 952 error(getSymbolAuxData(Obj, Symbol, I, Aux)); 953 954 int32_t AuxNumber = Aux->getNumber(Symbol.isBigObj()); 955 956 DictScope AS(W, "AuxSectionDef"); 957 W.printNumber("Length", Aux->Length); 958 W.printNumber("RelocationCount", Aux->NumberOfRelocations); 959 W.printNumber("LineNumberCount", Aux->NumberOfLinenumbers); 960 W.printHex("Checksum", Aux->CheckSum); 961 W.printNumber("Number", AuxNumber); 962 W.printEnum("Selection", Aux->Selection, makeArrayRef(ImageCOMDATSelect)); 963 964 if (Section && Section->Characteristics & COFF::IMAGE_SCN_LNK_COMDAT 965 && Aux->Selection == COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE) { 966 const coff_section *Assoc; 967 StringRef AssocName = ""; 968 std::error_code EC = Obj->getSection(AuxNumber, Assoc); 969 ErrorOr<StringRef> Res = getSectionName(Obj, AuxNumber, Assoc); 970 if (Res) 971 AssocName = *Res; 972 if (!EC) 973 EC = Res.getError(); 974 if (EC) { 975 AssocName = ""; 976 error(EC); 977 } 978 979 W.printNumber("AssocSection", AssocName, AuxNumber); 980 } 981 } else if (Symbol.isCLRToken()) { 982 const coff_aux_clr_token *Aux; 983 error(getSymbolAuxData(Obj, Symbol, I, Aux)); 984 985 ErrorOr<COFFSymbolRef> ReferredSym = 986 Obj->getSymbol(Aux->SymbolTableIndex); 987 StringRef ReferredName; 988 std::error_code EC = ReferredSym.getError(); 989 if (EC || (EC = Obj->getSymbolName(*ReferredSym, ReferredName))) { 990 ReferredName = ""; 991 error(EC); 992 } 993 994 DictScope AS(W, "AuxCLRToken"); 995 W.printNumber("AuxType", Aux->AuxType); 996 W.printNumber("Reserved", Aux->Reserved); 997 W.printNumber("SymbolTableIndex", ReferredName, Aux->SymbolTableIndex); 998 999 } else { 1000 W.startLine() << "<unhandled auxiliary record>\n"; 1001 } 1002 } 1003 } 1004 1005 void COFFDumper::printUnwindInfo() { 1006 ListScope D(W, "UnwindInformation"); 1007 switch (Obj->getMachine()) { 1008 case COFF::IMAGE_FILE_MACHINE_AMD64: { 1009 Win64EH::Dumper Dumper(W); 1010 Win64EH::Dumper::SymbolResolver 1011 Resolver = [](const object::coff_section *Section, uint64_t Offset, 1012 SymbolRef &Symbol, void *user_data) -> std::error_code { 1013 COFFDumper *Dumper = reinterpret_cast<COFFDumper *>(user_data); 1014 return Dumper->resolveSymbol(Section, Offset, Symbol); 1015 }; 1016 Win64EH::Dumper::Context Ctx(*Obj, Resolver, this); 1017 Dumper.printData(Ctx); 1018 break; 1019 } 1020 case COFF::IMAGE_FILE_MACHINE_ARMNT: { 1021 ARM::WinEH::Decoder Decoder(W); 1022 Decoder.dumpProcedureData(*Obj); 1023 break; 1024 } 1025 default: 1026 W.printEnum("unsupported Image Machine", Obj->getMachine(), 1027 makeArrayRef(ImageFileMachineType)); 1028 break; 1029 } 1030 } 1031 1032 void COFFDumper::printImportedSymbols( 1033 iterator_range<imported_symbol_iterator> Range) { 1034 for (const ImportedSymbolRef &I : Range) { 1035 StringRef Sym; 1036 error(I.getSymbolName(Sym)); 1037 uint16_t Ordinal; 1038 error(I.getOrdinal(Ordinal)); 1039 W.printNumber("Symbol", Sym, Ordinal); 1040 } 1041 } 1042 1043 void COFFDumper::printDelayImportedSymbols( 1044 const DelayImportDirectoryEntryRef &I, 1045 iterator_range<imported_symbol_iterator> Range) { 1046 int Index = 0; 1047 for (const ImportedSymbolRef &S : Range) { 1048 DictScope Import(W, "Import"); 1049 StringRef Sym; 1050 error(S.getSymbolName(Sym)); 1051 uint16_t Ordinal; 1052 error(S.getOrdinal(Ordinal)); 1053 W.printNumber("Symbol", Sym, Ordinal); 1054 uint64_t Addr; 1055 error(I.getImportAddress(Index++, Addr)); 1056 W.printHex("Address", Addr); 1057 } 1058 } 1059 1060 void COFFDumper::printCOFFImports() { 1061 // Regular imports 1062 for (const ImportDirectoryEntryRef &I : Obj->import_directories()) { 1063 DictScope Import(W, "Import"); 1064 StringRef Name; 1065 error(I.getName(Name)); 1066 W.printString("Name", Name); 1067 uint32_t Addr; 1068 error(I.getImportLookupTableRVA(Addr)); 1069 W.printHex("ImportLookupTableRVA", Addr); 1070 error(I.getImportAddressTableRVA(Addr)); 1071 W.printHex("ImportAddressTableRVA", Addr); 1072 printImportedSymbols(I.imported_symbols()); 1073 } 1074 1075 // Delay imports 1076 for (const DelayImportDirectoryEntryRef &I : Obj->delay_import_directories()) { 1077 DictScope Import(W, "DelayImport"); 1078 StringRef Name; 1079 error(I.getName(Name)); 1080 W.printString("Name", Name); 1081 const delay_import_directory_table_entry *Table; 1082 error(I.getDelayImportTable(Table)); 1083 W.printHex("Attributes", Table->Attributes); 1084 W.printHex("ModuleHandle", Table->ModuleHandle); 1085 W.printHex("ImportAddressTable", Table->DelayImportAddressTable); 1086 W.printHex("ImportNameTable", Table->DelayImportNameTable); 1087 W.printHex("BoundDelayImportTable", Table->BoundDelayImportTable); 1088 W.printHex("UnloadDelayImportTable", Table->UnloadDelayImportTable); 1089 printDelayImportedSymbols(I, I.imported_symbols()); 1090 } 1091 } 1092 1093 void COFFDumper::printCOFFExports() { 1094 for (const ExportDirectoryEntryRef &E : Obj->export_directories()) { 1095 DictScope Export(W, "Export"); 1096 1097 StringRef Name; 1098 uint32_t Ordinal, RVA; 1099 1100 error(E.getSymbolName(Name)); 1101 error(E.getOrdinal(Ordinal)); 1102 error(E.getExportRVA(RVA)); 1103 1104 W.printNumber("Ordinal", Ordinal); 1105 W.printString("Name", Name); 1106 W.printHex("RVA", RVA); 1107 } 1108 } 1109 1110 void COFFDumper::printCOFFDirectives() { 1111 for (const SectionRef &Section : Obj->sections()) { 1112 StringRef Contents; 1113 StringRef Name; 1114 1115 error(Section.getName(Name)); 1116 if (Name != ".drectve") 1117 continue; 1118 1119 error(Section.getContents(Contents)); 1120 1121 W.printString("Directive(s)", Contents); 1122 } 1123 } 1124 1125 static StringRef getBaseRelocTypeName(uint8_t Type) { 1126 switch (Type) { 1127 case COFF::IMAGE_REL_BASED_ABSOLUTE: return "ABSOLUTE"; 1128 case COFF::IMAGE_REL_BASED_HIGH: return "HIGH"; 1129 case COFF::IMAGE_REL_BASED_LOW: return "LOW"; 1130 case COFF::IMAGE_REL_BASED_HIGHLOW: return "HIGHLOW"; 1131 case COFF::IMAGE_REL_BASED_HIGHADJ: return "HIGHADJ"; 1132 case COFF::IMAGE_REL_BASED_ARM_MOV32T: return "ARM_MOV32(T)"; 1133 case COFF::IMAGE_REL_BASED_DIR64: return "DIR64"; 1134 default: return "unknown (" + llvm::utostr(Type) + ")"; 1135 } 1136 } 1137 1138 void COFFDumper::printCOFFBaseReloc() { 1139 ListScope D(W, "BaseReloc"); 1140 for (const BaseRelocRef &I : Obj->base_relocs()) { 1141 uint8_t Type; 1142 uint32_t RVA; 1143 error(I.getRVA(RVA)); 1144 error(I.getType(Type)); 1145 DictScope Import(W, "Entry"); 1146 W.printString("Type", getBaseRelocTypeName(Type)); 1147 W.printHex("Address", RVA); 1148 } 1149 } 1150 1151 void COFFDumper::printStackMap() const { 1152 object::SectionRef StackMapSection; 1153 for (auto Sec : Obj->sections()) { 1154 StringRef Name; 1155 Sec.getName(Name); 1156 if (Name == ".llvm_stackmaps") { 1157 StackMapSection = Sec; 1158 break; 1159 } 1160 } 1161 1162 if (StackMapSection == object::SectionRef()) 1163 return; 1164 1165 StringRef StackMapContents; 1166 StackMapSection.getContents(StackMapContents); 1167 ArrayRef<uint8_t> StackMapContentsArray( 1168 reinterpret_cast<const uint8_t*>(StackMapContents.data()), 1169 StackMapContents.size()); 1170 1171 if (Obj->isLittleEndian()) 1172 prettyPrintStackMap( 1173 llvm::outs(), 1174 StackMapV1Parser<support::little>(StackMapContentsArray)); 1175 else 1176 prettyPrintStackMap(llvm::outs(), 1177 StackMapV1Parser<support::big>(StackMapContentsArray)); 1178 } 1179
