1//===- COFFObjectFile.cpp - COFF object file implementation -----*- 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// This file declares the COFFObjectFile class. 11// 12//===----------------------------------------------------------------------===// 13 14#include "llvm/Object/COFF.h" 15#include "llvm/ADT/SmallString.h" 16#include "llvm/ADT/StringSwitch.h" 17#include "llvm/ADT/Triple.h" 18 19using namespace llvm; 20using namespace object; 21 22namespace { 23using support::ulittle8_t; 24using support::ulittle16_t; 25using support::ulittle32_t; 26using support::little16_t; 27} 28 29namespace { 30// Returns false if size is greater than the buffer size. And sets ec. 31bool checkSize(const MemoryBuffer *m, error_code &ec, uint64_t size) { 32 if (m->getBufferSize() < size) { 33 ec = object_error::unexpected_eof; 34 return false; 35 } 36 return true; 37} 38 39// Returns false if any bytes in [addr, addr + size) fall outsize of m. 40bool checkAddr(const MemoryBuffer *m, 41 error_code &ec, 42 uintptr_t addr, 43 uint64_t size) { 44 if (addr + size < addr || 45 addr + size < size || 46 addr + size > uintptr_t(m->getBufferEnd())) { 47 ec = object_error::unexpected_eof; 48 return false; 49 } 50 return true; 51} 52} 53 54const coff_symbol *COFFObjectFile::toSymb(DataRefImpl Symb) const { 55 const coff_symbol *addr = reinterpret_cast<const coff_symbol*>(Symb.p); 56 57# ifndef NDEBUG 58 // Verify that the symbol points to a valid entry in the symbol table. 59 uintptr_t offset = uintptr_t(addr) - uintptr_t(base()); 60 if (offset < Header->PointerToSymbolTable 61 || offset >= Header->PointerToSymbolTable 62 + (Header->NumberOfSymbols * sizeof(coff_symbol))) 63 report_fatal_error("Symbol was outside of symbol table."); 64 65 assert((offset - Header->PointerToSymbolTable) % sizeof(coff_symbol) 66 == 0 && "Symbol did not point to the beginning of a symbol"); 67# endif 68 69 return addr; 70} 71 72const coff_section *COFFObjectFile::toSec(DataRefImpl Sec) const { 73 const coff_section *addr = reinterpret_cast<const coff_section*>(Sec.p); 74 75# ifndef NDEBUG 76 // Verify that the section points to a valid entry in the section table. 77 if (addr < SectionTable 78 || addr >= (SectionTable + Header->NumberOfSections)) 79 report_fatal_error("Section was outside of section table."); 80 81 uintptr_t offset = uintptr_t(addr) - uintptr_t(SectionTable); 82 assert(offset % sizeof(coff_section) == 0 && 83 "Section did not point to the beginning of a section"); 84# endif 85 86 return addr; 87} 88 89error_code COFFObjectFile::getSymbolNext(DataRefImpl Symb, 90 SymbolRef &Result) const { 91 const coff_symbol *symb = toSymb(Symb); 92 symb += 1 + symb->NumberOfAuxSymbols; 93 Symb.p = reinterpret_cast<uintptr_t>(symb); 94 Result = SymbolRef(Symb, this); 95 return object_error::success; 96} 97 98 error_code COFFObjectFile::getSymbolName(DataRefImpl Symb, 99 StringRef &Result) const { 100 const coff_symbol *symb = toSymb(Symb); 101 return getSymbolName(symb, Result); 102} 103 104error_code COFFObjectFile::getSymbolOffset(DataRefImpl Symb, 105 uint64_t &Result) const { 106 const coff_symbol *symb = toSymb(Symb); 107 const coff_section *Section = NULL; 108 if (error_code ec = getSection(symb->SectionNumber, Section)) 109 return ec; 110 char Type; 111 if (error_code ec = getSymbolNMTypeChar(Symb, Type)) 112 return ec; 113 if (Type == 'U' || Type == 'w') 114 Result = UnknownAddressOrSize; 115 else if (Section) 116 Result = Section->VirtualAddress + symb->Value; 117 else 118 Result = symb->Value; 119 return object_error::success; 120} 121 122error_code COFFObjectFile::getSymbolAddress(DataRefImpl Symb, 123 uint64_t &Result) const { 124 const coff_symbol *symb = toSymb(Symb); 125 const coff_section *Section = NULL; 126 if (error_code ec = getSection(symb->SectionNumber, Section)) 127 return ec; 128 char Type; 129 if (error_code ec = getSymbolNMTypeChar(Symb, Type)) 130 return ec; 131 if (Type == 'U' || Type == 'w') 132 Result = UnknownAddressOrSize; 133 else if (Section) 134 Result = reinterpret_cast<uintptr_t>(base() + 135 Section->PointerToRawData + 136 symb->Value); 137 else 138 Result = reinterpret_cast<uintptr_t>(base() + symb->Value); 139 return object_error::success; 140} 141 142error_code COFFObjectFile::getSymbolType(DataRefImpl Symb, 143 SymbolRef::Type &Result) const { 144 const coff_symbol *symb = toSymb(Symb); 145 Result = SymbolRef::ST_Other; 146 if (symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL && 147 symb->SectionNumber == COFF::IMAGE_SYM_UNDEFINED) { 148 Result = SymbolRef::ST_External; 149 } else { 150 if (symb->getComplexType() == COFF::IMAGE_SYM_DTYPE_FUNCTION) { 151 Result = SymbolRef::ST_Function; 152 } else { 153 char Type; 154 if (error_code ec = getSymbolNMTypeChar(Symb, Type)) 155 return ec; 156 if (Type == 'r' || Type == 'R') { 157 Result = SymbolRef::ST_Data; 158 } 159 } 160 } 161 return object_error::success; 162} 163 164error_code COFFObjectFile::isSymbolGlobal(DataRefImpl Symb, 165 bool &Result) const { 166 const coff_symbol *symb = toSymb(Symb); 167 Result = (symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL); 168 return object_error::success; 169} 170 171error_code COFFObjectFile::isSymbolWeak(DataRefImpl Symb, 172 bool &Result) const { 173 const coff_symbol *symb = toSymb(Symb); 174 Result = (symb->StorageClass == COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL); 175 return object_error::success; 176} 177 178error_code COFFObjectFile::getSymbolSize(DataRefImpl Symb, 179 uint64_t &Result) const { 180 // FIXME: Return the correct size. This requires looking at all the symbols 181 // in the same section as this symbol, and looking for either the next 182 // symbol, or the end of the section. 183 const coff_symbol *symb = toSymb(Symb); 184 const coff_section *Section = NULL; 185 if (error_code ec = getSection(symb->SectionNumber, Section)) 186 return ec; 187 char Type; 188 if (error_code ec = getSymbolNMTypeChar(Symb, Type)) 189 return ec; 190 if (Type == 'U' || Type == 'w') 191 Result = UnknownAddressOrSize; 192 else if (Section) 193 Result = Section->SizeOfRawData - symb->Value; 194 else 195 Result = 0; 196 return object_error::success; 197} 198 199error_code COFFObjectFile::getSymbolNMTypeChar(DataRefImpl Symb, 200 char &Result) const { 201 const coff_symbol *symb = toSymb(Symb); 202 StringRef name; 203 if (error_code ec = getSymbolName(Symb, name)) 204 return ec; 205 char ret = StringSwitch<char>(name) 206 .StartsWith(".debug", 'N') 207 .StartsWith(".sxdata", 'N') 208 .Default('?'); 209 210 if (ret != '?') { 211 Result = ret; 212 return object_error::success; 213 } 214 215 uint32_t Characteristics = 0; 216 if (symb->SectionNumber > 0) { 217 const coff_section *Section = NULL; 218 if (error_code ec = getSection(symb->SectionNumber, Section)) 219 return ec; 220 Characteristics = Section->Characteristics; 221 } 222 223 switch (symb->SectionNumber) { 224 case COFF::IMAGE_SYM_UNDEFINED: 225 // Check storage classes. 226 if (symb->StorageClass == COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL) { 227 Result = 'w'; 228 return object_error::success; // Don't do ::toupper. 229 } else 230 ret = 'u'; 231 break; 232 case COFF::IMAGE_SYM_ABSOLUTE: 233 ret = 'a'; 234 break; 235 case COFF::IMAGE_SYM_DEBUG: 236 ret = 'n'; 237 break; 238 default: 239 // Check section type. 240 if (Characteristics & COFF::IMAGE_SCN_CNT_CODE) 241 ret = 't'; 242 else if ( Characteristics & COFF::IMAGE_SCN_MEM_READ 243 && ~Characteristics & COFF::IMAGE_SCN_MEM_WRITE) // Read only. 244 ret = 'r'; 245 else if (Characteristics & COFF::IMAGE_SCN_CNT_INITIALIZED_DATA) 246 ret = 'd'; 247 else if (Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA) 248 ret = 'b'; 249 else if (Characteristics & COFF::IMAGE_SCN_LNK_INFO) 250 ret = 'i'; 251 252 // Check for section symbol. 253 else if ( symb->StorageClass == COFF::IMAGE_SYM_CLASS_STATIC 254 && symb->Value == 0) 255 ret = 's'; 256 } 257 258 if (symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL) 259 ret = ::toupper(ret); 260 261 Result = ret; 262 return object_error::success; 263} 264 265error_code COFFObjectFile::isSymbolInternal(DataRefImpl Symb, 266 bool &Result) const { 267 Result = false; 268 return object_error::success; 269} 270 271error_code COFFObjectFile::isSymbolAbsolute(DataRefImpl Symb, 272 bool &Result) const { 273 const coff_symbol *symb = toSymb(Symb); 274 Result = symb->SectionNumber == COFF::IMAGE_SYM_ABSOLUTE; 275 return object_error::success; 276} 277 278error_code COFFObjectFile::getSymbolSection(DataRefImpl Symb, 279 section_iterator &Result) const { 280 const coff_symbol *symb = toSymb(Symb); 281 if (symb->SectionNumber <= COFF::IMAGE_SYM_UNDEFINED) 282 Result = end_sections(); 283 else { 284 const coff_section *sec; 285 if (error_code ec = getSection(symb->SectionNumber, sec)) return ec; 286 DataRefImpl Sec; 287 Sec.p = reinterpret_cast<uintptr_t>(sec); 288 Result = section_iterator(SectionRef(Sec, this)); 289 } 290 return object_error::success; 291} 292 293error_code COFFObjectFile::getSectionNext(DataRefImpl Sec, 294 SectionRef &Result) const { 295 const coff_section *sec = toSec(Sec); 296 sec += 1; 297 Sec.p = reinterpret_cast<uintptr_t>(sec); 298 Result = SectionRef(Sec, this); 299 return object_error::success; 300} 301 302error_code COFFObjectFile::getSectionName(DataRefImpl Sec, 303 StringRef &Result) const { 304 const coff_section *sec = toSec(Sec); 305 StringRef name; 306 if (sec->Name[7] == 0) 307 // Null terminated, let ::strlen figure out the length. 308 name = sec->Name; 309 else 310 // Not null terminated, use all 8 bytes. 311 name = StringRef(sec->Name, 8); 312 313 // Check for string table entry. First byte is '/'. 314 if (name[0] == '/') { 315 uint32_t Offset; 316 name.substr(1).getAsInteger(10, Offset); 317 if (error_code ec = getString(Offset, name)) 318 return ec; 319 } 320 321 Result = name; 322 return object_error::success; 323} 324 325error_code COFFObjectFile::getSectionAddress(DataRefImpl Sec, 326 uint64_t &Result) const { 327 const coff_section *sec = toSec(Sec); 328 Result = sec->VirtualAddress; 329 return object_error::success; 330} 331 332error_code COFFObjectFile::getSectionSize(DataRefImpl Sec, 333 uint64_t &Result) const { 334 const coff_section *sec = toSec(Sec); 335 Result = sec->SizeOfRawData; 336 return object_error::success; 337} 338 339error_code COFFObjectFile::getSectionContents(DataRefImpl Sec, 340 StringRef &Result) const { 341 const coff_section *sec = toSec(Sec); 342 // The only thing that we need to verify is that the contents is contained 343 // within the file bounds. We don't need to make sure it doesn't cover other 344 // data, as there's nothing that says that is not allowed. 345 uintptr_t con_start = uintptr_t(base()) + sec->PointerToRawData; 346 uintptr_t con_end = con_start + sec->SizeOfRawData; 347 if (con_end >= uintptr_t(Data->getBufferEnd())) 348 return object_error::parse_failed; 349 Result = StringRef(reinterpret_cast<const char*>(con_start), 350 sec->SizeOfRawData); 351 return object_error::success; 352} 353 354error_code COFFObjectFile::getSectionAlignment(DataRefImpl Sec, 355 uint64_t &Res) const { 356 const coff_section *sec = toSec(Sec); 357 if (!sec) 358 return object_error::parse_failed; 359 Res = uint64_t(1) << (((sec->Characteristics & 0x00F00000) >> 20) - 1); 360 return object_error::success; 361} 362 363error_code COFFObjectFile::isSectionText(DataRefImpl Sec, 364 bool &Result) const { 365 const coff_section *sec = toSec(Sec); 366 Result = sec->Characteristics & COFF::IMAGE_SCN_CNT_CODE; 367 return object_error::success; 368} 369 370error_code COFFObjectFile::isSectionData(DataRefImpl Sec, 371 bool &Result) const { 372 const coff_section *sec = toSec(Sec); 373 Result = sec->Characteristics & COFF::IMAGE_SCN_CNT_INITIALIZED_DATA; 374 return object_error::success; 375} 376 377error_code COFFObjectFile::isSectionBSS(DataRefImpl Sec, 378 bool &Result) const { 379 const coff_section *sec = toSec(Sec); 380 Result = sec->Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA; 381 return object_error::success; 382} 383 384error_code COFFObjectFile::sectionContainsSymbol(DataRefImpl Sec, 385 DataRefImpl Symb, 386 bool &Result) const { 387 const coff_section *sec = toSec(Sec); 388 const coff_symbol *symb = toSymb(Symb); 389 const coff_section *symb_sec; 390 if (error_code ec = getSection(symb->SectionNumber, symb_sec)) return ec; 391 if (symb_sec == sec) 392 Result = true; 393 else 394 Result = false; 395 return object_error::success; 396} 397 398relocation_iterator COFFObjectFile::getSectionRelBegin(DataRefImpl Sec) const { 399 const coff_section *sec = toSec(Sec); 400 DataRefImpl ret; 401 std::memset(&ret, 0, sizeof(ret)); 402 if (sec->NumberOfRelocations == 0) 403 ret.p = 0; 404 else 405 ret.p = reinterpret_cast<uintptr_t>(base() + sec->PointerToRelocations); 406 407 return relocation_iterator(RelocationRef(ret, this)); 408} 409 410relocation_iterator COFFObjectFile::getSectionRelEnd(DataRefImpl Sec) const { 411 const coff_section *sec = toSec(Sec); 412 DataRefImpl ret; 413 std::memset(&ret, 0, sizeof(ret)); 414 if (sec->NumberOfRelocations == 0) 415 ret.p = 0; 416 else 417 ret.p = reinterpret_cast<uintptr_t>( 418 reinterpret_cast<const coff_relocation*>( 419 base() + sec->PointerToRelocations) 420 + sec->NumberOfRelocations); 421 422 return relocation_iterator(RelocationRef(ret, this)); 423} 424 425COFFObjectFile::COFFObjectFile(MemoryBuffer *Object, error_code &ec) 426 : ObjectFile(Binary::isCOFF, Object, ec) { 427 // Check that we at least have enough room for a header. 428 if (!checkSize(Data, ec, sizeof(coff_file_header))) return; 429 430 // The actual starting location of the COFF header in the file. This can be 431 // non-zero in PE/COFF files. 432 uint64_t HeaderStart = 0; 433 434 // Check if this is a PE/COFF file. 435 if (base()[0] == 0x4d && base()[1] == 0x5a) { 436 // PE/COFF, seek through MS-DOS compatibility stub and 4-byte 437 // PE signature to find 'normal' COFF header. 438 if (!checkSize(Data, ec, 0x3c + 8)) return; 439 HeaderStart += *reinterpret_cast<const ulittle32_t *>(base() + 0x3c); 440 // Check the PE header. ("PE\0\0") 441 if (std::memcmp(base() + HeaderStart, "PE\0\0", 4) != 0) { 442 ec = object_error::parse_failed; 443 return; 444 } 445 HeaderStart += 4; // Skip the PE Header. 446 } 447 448 Header = reinterpret_cast<const coff_file_header *>(base() + HeaderStart); 449 if (!checkAddr(Data, ec, uintptr_t(Header), sizeof(coff_file_header))) 450 return; 451 452 SectionTable = 453 reinterpret_cast<const coff_section *>( base() 454 + HeaderStart 455 + sizeof(coff_file_header) 456 + Header->SizeOfOptionalHeader); 457 if (!checkAddr(Data, ec, uintptr_t(SectionTable), 458 Header->NumberOfSections * sizeof(coff_section))) 459 return; 460 461 SymbolTable = 462 reinterpret_cast<const coff_symbol *>(base() 463 + Header->PointerToSymbolTable); 464 if (!checkAddr(Data, ec, uintptr_t(SymbolTable), 465 Header->NumberOfSymbols * sizeof(coff_symbol))) 466 return; 467 468 // Find string table. 469 StringTable = reinterpret_cast<const char *>(base()) 470 + Header->PointerToSymbolTable 471 + Header->NumberOfSymbols * sizeof(coff_symbol); 472 if (!checkAddr(Data, ec, uintptr_t(StringTable), sizeof(ulittle32_t))) 473 return; 474 475 StringTableSize = *reinterpret_cast<const ulittle32_t *>(StringTable); 476 if (!checkAddr(Data, ec, uintptr_t(StringTable), StringTableSize)) 477 return; 478 // Check that the string table is null terminated if has any in it. 479 if (StringTableSize < 4 480 || (StringTableSize > 4 && StringTable[StringTableSize - 1] != 0)) { 481 ec = object_error::parse_failed; 482 return; 483 } 484 485 ec = object_error::success; 486} 487 488symbol_iterator COFFObjectFile::begin_symbols() const { 489 DataRefImpl ret; 490 std::memset(&ret, 0, sizeof(DataRefImpl)); 491 ret.p = reinterpret_cast<intptr_t>(SymbolTable); 492 return symbol_iterator(SymbolRef(ret, this)); 493} 494 495symbol_iterator COFFObjectFile::end_symbols() const { 496 // The symbol table ends where the string table begins. 497 DataRefImpl ret; 498 std::memset(&ret, 0, sizeof(DataRefImpl)); 499 ret.p = reinterpret_cast<intptr_t>(StringTable); 500 return symbol_iterator(SymbolRef(ret, this)); 501} 502 503section_iterator COFFObjectFile::begin_sections() const { 504 DataRefImpl ret; 505 std::memset(&ret, 0, sizeof(DataRefImpl)); 506 ret.p = reinterpret_cast<intptr_t>(SectionTable); 507 return section_iterator(SectionRef(ret, this)); 508} 509 510section_iterator COFFObjectFile::end_sections() const { 511 DataRefImpl ret; 512 std::memset(&ret, 0, sizeof(DataRefImpl)); 513 ret.p = reinterpret_cast<intptr_t>(SectionTable + Header->NumberOfSections); 514 return section_iterator(SectionRef(ret, this)); 515} 516 517uint8_t COFFObjectFile::getBytesInAddress() const { 518 return getArch() == Triple::x86_64 ? 8 : 4; 519} 520 521StringRef COFFObjectFile::getFileFormatName() const { 522 switch(Header->Machine) { 523 case COFF::IMAGE_FILE_MACHINE_I386: 524 return "COFF-i386"; 525 case COFF::IMAGE_FILE_MACHINE_AMD64: 526 return "COFF-x86-64"; 527 default: 528 return "COFF-<unknown arch>"; 529 } 530} 531 532unsigned COFFObjectFile::getArch() const { 533 switch(Header->Machine) { 534 case COFF::IMAGE_FILE_MACHINE_I386: 535 return Triple::x86; 536 case COFF::IMAGE_FILE_MACHINE_AMD64: 537 return Triple::x86_64; 538 default: 539 return Triple::UnknownArch; 540 } 541} 542 543error_code COFFObjectFile::getHeader(const coff_file_header *&Res) const { 544 Res = Header; 545 return object_error::success; 546} 547 548error_code COFFObjectFile::getSection(int32_t index, 549 const coff_section *&Result) const { 550 // Check for special index values. 551 if (index == COFF::IMAGE_SYM_UNDEFINED || 552 index == COFF::IMAGE_SYM_ABSOLUTE || 553 index == COFF::IMAGE_SYM_DEBUG) 554 Result = NULL; 555 else if (index > 0 && index <= Header->NumberOfSections) 556 // We already verified the section table data, so no need to check again. 557 Result = SectionTable + (index - 1); 558 else 559 return object_error::parse_failed; 560 return object_error::success; 561} 562 563error_code COFFObjectFile::getString(uint32_t offset, 564 StringRef &Result) const { 565 if (StringTableSize <= 4) 566 // Tried to get a string from an empty string table. 567 return object_error::parse_failed; 568 if (offset >= StringTableSize) 569 return object_error::unexpected_eof; 570 Result = StringRef(StringTable + offset); 571 return object_error::success; 572} 573 574error_code COFFObjectFile::getSymbol(uint32_t index, 575 const coff_symbol *&Result) const { 576 if (index < Header->NumberOfSymbols) 577 Result = SymbolTable + index; 578 else 579 return object_error::parse_failed; 580 return object_error::success; 581} 582 583error_code COFFObjectFile::getSymbolName(const coff_symbol *symbol, 584 StringRef &Res) const { 585 // Check for string table entry. First 4 bytes are 0. 586 if (symbol->Name.Offset.Zeroes == 0) { 587 uint32_t Offset = symbol->Name.Offset.Offset; 588 if (error_code ec = getString(Offset, Res)) 589 return ec; 590 return object_error::success; 591 } 592 593 if (symbol->Name.ShortName[7] == 0) 594 // Null terminated, let ::strlen figure out the length. 595 Res = StringRef(symbol->Name.ShortName); 596 else 597 // Not null terminated, use all 8 bytes. 598 Res = StringRef(symbol->Name.ShortName, 8); 599 return object_error::success; 600} 601 602const coff_relocation *COFFObjectFile::toRel(DataRefImpl Rel) const { 603 return reinterpret_cast<const coff_relocation*>(Rel.p); 604} 605error_code COFFObjectFile::getRelocationNext(DataRefImpl Rel, 606 RelocationRef &Res) const { 607 Rel.p = reinterpret_cast<uintptr_t>( 608 reinterpret_cast<const coff_relocation*>(Rel.p) + 1); 609 Res = RelocationRef(Rel, this); 610 return object_error::success; 611} 612error_code COFFObjectFile::getRelocationAddress(DataRefImpl Rel, 613 uint64_t &Res) const { 614 Res = toRel(Rel)->VirtualAddress; 615 return object_error::success; 616} 617error_code COFFObjectFile::getRelocationSymbol(DataRefImpl Rel, 618 SymbolRef &Res) const { 619 const coff_relocation* R = toRel(Rel); 620 DataRefImpl Symb; 621 Symb.p = reinterpret_cast<uintptr_t>(SymbolTable + R->SymbolTableIndex); 622 Res = SymbolRef(Symb, this); 623 return object_error::success; 624} 625error_code COFFObjectFile::getRelocationType(DataRefImpl Rel, 626 uint32_t &Res) const { 627 const coff_relocation* R = toRel(Rel); 628 Res = R->Type; 629 return object_error::success; 630} 631 632#define LLVM_COFF_SWITCH_RELOC_TYPE_NAME(enum) \ 633 case COFF::enum: res = #enum; break; 634 635error_code COFFObjectFile::getRelocationTypeName(DataRefImpl Rel, 636 SmallVectorImpl<char> &Result) const { 637 const coff_relocation *reloc = toRel(Rel); 638 StringRef res; 639 switch (Header->Machine) { 640 case COFF::IMAGE_FILE_MACHINE_AMD64: 641 switch (reloc->Type) { 642 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ABSOLUTE); 643 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ADDR64); 644 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ADDR32); 645 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ADDR32NB); 646 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32); 647 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_1); 648 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_2); 649 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_3); 650 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_4); 651 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_5); 652 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SECTION); 653 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SECREL); 654 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SECREL7); 655 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_TOKEN); 656 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SREL32); 657 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_PAIR); 658 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SSPAN32); 659 default: 660 res = "Unknown"; 661 } 662 break; 663 case COFF::IMAGE_FILE_MACHINE_I386: 664 switch (reloc->Type) { 665 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_ABSOLUTE); 666 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_DIR16); 667 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_REL16); 668 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_DIR32); 669 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_DIR32NB); 670 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SEG12); 671 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SECTION); 672 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SECREL); 673 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_TOKEN); 674 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SECREL7); 675 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_REL32); 676 default: 677 res = "Unknown"; 678 } 679 break; 680 default: 681 res = "Unknown"; 682 } 683 Result.append(res.begin(), res.end()); 684 return object_error::success; 685} 686 687#undef LLVM_COFF_SWITCH_RELOC_TYPE_NAME 688 689error_code COFFObjectFile::getRelocationAdditionalInfo(DataRefImpl Rel, 690 int64_t &Res) const { 691 Res = 0; 692 return object_error::success; 693} 694error_code COFFObjectFile::getRelocationValueString(DataRefImpl Rel, 695 SmallVectorImpl<char> &Result) const { 696 const coff_relocation *reloc = toRel(Rel); 697 const coff_symbol *symb = 0; 698 if (error_code ec = getSymbol(reloc->SymbolTableIndex, symb)) return ec; 699 DataRefImpl sym; 700 ::memset(&sym, 0, sizeof(sym)); 701 sym.p = reinterpret_cast<uintptr_t>(symb); 702 StringRef symname; 703 if (error_code ec = getSymbolName(sym, symname)) return ec; 704 Result.append(symname.begin(), symname.end()); 705 return object_error::success; 706} 707 708namespace llvm { 709 710 ObjectFile *ObjectFile::createCOFFObjectFile(MemoryBuffer *Object) { 711 error_code ec; 712 return new COFFObjectFile(Object, ec); 713 } 714 715} // end namespace llvm 716