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