1 //===- COFFObjectFile.cpp - COFF object file implementation -----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares the COFFObjectFile class.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/Object/COFF.h"
15 #include "llvm/ADT/ArrayRef.h"
16 #include "llvm/ADT/SmallString.h"
17 #include "llvm/ADT/StringSwitch.h"
18 #include "llvm/ADT/Triple.h"
21 using namespace object;
24 using support::ulittle8_t;
25 using support::ulittle16_t;
26 using support::ulittle32_t;
27 using support::little16_t;
31 // Returns false if size is greater than the buffer size. And sets ec.
32 bool checkSize(const MemoryBuffer *m, error_code &ec, uint64_t size) {
33 if (m->getBufferSize() < size) {
34 ec = object_error::unexpected_eof;
40 // Sets Obj unless any bytes in [addr, addr + size) fall outsize of m.
41 // Returns unexpected_eof if error.
43 error_code getObject(const T *&Obj, const MemoryBuffer *M, const uint8_t *Ptr,
44 const size_t Size = sizeof(T)) {
45 uintptr_t Addr = uintptr_t(Ptr);
46 if (Addr + Size < Addr ||
48 Addr + Size > uintptr_t(M->getBufferEnd())) {
49 return object_error::unexpected_eof;
51 Obj = reinterpret_cast<const T *>(Addr);
52 return object_error::success;
56 const coff_symbol *COFFObjectFile::toSymb(DataRefImpl Symb) const {
57 const coff_symbol *addr = reinterpret_cast<const coff_symbol*>(Symb.p);
60 // Verify that the symbol points to a valid entry in the symbol table.
61 uintptr_t offset = uintptr_t(addr) - uintptr_t(base());
62 if (offset < COFFHeader->PointerToSymbolTable
63 || offset >= COFFHeader->PointerToSymbolTable
64 + (COFFHeader->NumberOfSymbols * sizeof(coff_symbol)))
65 report_fatal_error("Symbol was outside of symbol table.");
67 assert((offset - COFFHeader->PointerToSymbolTable) % sizeof(coff_symbol)
68 == 0 && "Symbol did not point to the beginning of a symbol");
74 const coff_section *COFFObjectFile::toSec(DataRefImpl Sec) const {
75 const coff_section *addr = reinterpret_cast<const coff_section*>(Sec.p);
78 // Verify that the section points to a valid entry in the section table.
79 if (addr < SectionTable
80 || addr >= (SectionTable + COFFHeader->NumberOfSections))
81 report_fatal_error("Section was outside of section table.");
83 uintptr_t offset = uintptr_t(addr) - uintptr_t(SectionTable);
84 assert(offset % sizeof(coff_section) == 0 &&
85 "Section did not point to the beginning of a section");
91 error_code COFFObjectFile::getSymbolNext(DataRefImpl Symb,
92 SymbolRef &Result) const {
93 const coff_symbol *symb = toSymb(Symb);
94 symb += 1 + symb->NumberOfAuxSymbols;
95 Symb.p = reinterpret_cast<uintptr_t>(symb);
96 Result = SymbolRef(Symb, this);
97 return object_error::success;
100 error_code COFFObjectFile::getSymbolName(DataRefImpl Symb,
101 StringRef &Result) const {
102 const coff_symbol *symb = toSymb(Symb);
103 return getSymbolName(symb, Result);
106 error_code COFFObjectFile::getSymbolFileOffset(DataRefImpl Symb,
107 uint64_t &Result) const {
108 const coff_symbol *symb = toSymb(Symb);
109 const coff_section *Section = NULL;
110 if (error_code ec = getSection(symb->SectionNumber, Section))
113 if (error_code ec = getSymbolNMTypeChar(Symb, Type))
115 if (Type == 'U' || Type == 'w')
116 Result = UnknownAddressOrSize;
118 Result = Section->PointerToRawData + symb->Value;
120 Result = symb->Value;
121 return object_error::success;
124 error_code COFFObjectFile::getSymbolAddress(DataRefImpl Symb,
125 uint64_t &Result) const {
126 const coff_symbol *symb = toSymb(Symb);
127 const coff_section *Section = NULL;
128 if (error_code ec = getSection(symb->SectionNumber, Section))
131 if (error_code ec = getSymbolNMTypeChar(Symb, Type))
133 if (Type == 'U' || Type == 'w')
134 Result = UnknownAddressOrSize;
136 Result = Section->VirtualAddress + symb->Value;
138 Result = symb->Value;
139 return object_error::success;
142 error_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_Unknown;
150 if (symb->getComplexType() == COFF::IMAGE_SYM_DTYPE_FUNCTION) {
151 Result = SymbolRef::ST_Function;
154 if (error_code ec = getSymbolNMTypeChar(Symb, Type))
156 if (Type == 'r' || Type == 'R') {
157 Result = SymbolRef::ST_Data;
161 return object_error::success;
164 error_code COFFObjectFile::getSymbolFlags(DataRefImpl Symb,
165 uint32_t &Result) const {
166 const coff_symbol *symb = toSymb(Symb);
167 Result = SymbolRef::SF_None;
169 // TODO: Correctly set SF_FormatSpecific, SF_ThreadLocal, SF_Common
171 if (symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL &&
172 symb->SectionNumber == COFF::IMAGE_SYM_UNDEFINED)
173 Result |= SymbolRef::SF_Undefined;
175 // TODO: This are certainly too restrictive.
176 if (symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL)
177 Result |= SymbolRef::SF_Global;
179 if (symb->StorageClass == COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL)
180 Result |= SymbolRef::SF_Weak;
182 if (symb->SectionNumber == COFF::IMAGE_SYM_ABSOLUTE)
183 Result |= SymbolRef::SF_Absolute;
185 return object_error::success;
188 error_code COFFObjectFile::getSymbolSize(DataRefImpl Symb,
189 uint64_t &Result) const {
190 // FIXME: Return the correct size. This requires looking at all the symbols
191 // in the same section as this symbol, and looking for either the next
192 // symbol, or the end of the section.
193 const coff_symbol *symb = toSymb(Symb);
194 const coff_section *Section = NULL;
195 if (error_code ec = getSection(symb->SectionNumber, Section))
198 if (error_code ec = getSymbolNMTypeChar(Symb, Type))
200 if (Type == 'U' || Type == 'w')
201 Result = UnknownAddressOrSize;
203 Result = Section->SizeOfRawData - symb->Value;
206 return object_error::success;
209 error_code COFFObjectFile::getSymbolNMTypeChar(DataRefImpl Symb,
210 char &Result) const {
211 const coff_symbol *symb = toSymb(Symb);
213 if (error_code ec = getSymbolName(Symb, name))
215 char ret = StringSwitch<char>(name)
216 .StartsWith(".debug", 'N')
217 .StartsWith(".sxdata", 'N')
222 return object_error::success;
225 uint32_t Characteristics = 0;
226 if (symb->SectionNumber > 0) {
227 const coff_section *Section = NULL;
228 if (error_code ec = getSection(symb->SectionNumber, Section))
230 Characteristics = Section->Characteristics;
233 switch (symb->SectionNumber) {
234 case COFF::IMAGE_SYM_UNDEFINED:
235 // Check storage classes.
236 if (symb->StorageClass == COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL) {
238 return object_error::success; // Don't do ::toupper.
239 } else if (symb->Value != 0) // Check for common symbols.
244 case COFF::IMAGE_SYM_ABSOLUTE:
247 case COFF::IMAGE_SYM_DEBUG:
251 // Check section type.
252 if (Characteristics & COFF::IMAGE_SCN_CNT_CODE)
254 else if ( Characteristics & COFF::IMAGE_SCN_MEM_READ
255 && ~Characteristics & COFF::IMAGE_SCN_MEM_WRITE) // Read only.
257 else if (Characteristics & COFF::IMAGE_SCN_CNT_INITIALIZED_DATA)
259 else if (Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA)
261 else if (Characteristics & COFF::IMAGE_SCN_LNK_INFO)
264 // Check for section symbol.
265 else if ( symb->StorageClass == COFF::IMAGE_SYM_CLASS_STATIC
270 if (symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL)
271 ret = ::toupper(static_cast<unsigned char>(ret));
274 return object_error::success;
277 error_code COFFObjectFile::getSymbolSection(DataRefImpl Symb,
278 section_iterator &Result) const {
279 const coff_symbol *symb = toSymb(Symb);
280 if (symb->SectionNumber <= COFF::IMAGE_SYM_UNDEFINED)
281 Result = end_sections();
283 const coff_section *sec = 0;
284 if (error_code ec = getSection(symb->SectionNumber, sec)) return ec;
286 Sec.p = reinterpret_cast<uintptr_t>(sec);
287 Result = section_iterator(SectionRef(Sec, this));
289 return object_error::success;
292 error_code COFFObjectFile::getSymbolValue(DataRefImpl Symb,
293 uint64_t &Val) const {
294 report_fatal_error("getSymbolValue unimplemented in COFFObjectFile");
297 error_code COFFObjectFile::getSectionNext(DataRefImpl Sec,
298 SectionRef &Result) const {
299 const coff_section *sec = toSec(Sec);
301 Sec.p = reinterpret_cast<uintptr_t>(sec);
302 Result = SectionRef(Sec, this);
303 return object_error::success;
306 error_code COFFObjectFile::getSectionName(DataRefImpl Sec,
307 StringRef &Result) const {
308 const coff_section *sec = toSec(Sec);
309 return getSectionName(sec, Result);
312 error_code COFFObjectFile::getSectionAddress(DataRefImpl Sec,
313 uint64_t &Result) const {
314 const coff_section *sec = toSec(Sec);
315 Result = sec->VirtualAddress;
316 return object_error::success;
319 error_code COFFObjectFile::getSectionSize(DataRefImpl Sec,
320 uint64_t &Result) const {
321 const coff_section *sec = toSec(Sec);
322 Result = sec->SizeOfRawData;
323 return object_error::success;
326 error_code COFFObjectFile::getSectionContents(DataRefImpl Sec,
327 StringRef &Result) const {
328 const coff_section *sec = toSec(Sec);
329 ArrayRef<uint8_t> Res;
330 error_code EC = getSectionContents(sec, Res);
331 Result = StringRef(reinterpret_cast<const char*>(Res.data()), Res.size());
335 error_code COFFObjectFile::getSectionAlignment(DataRefImpl Sec,
336 uint64_t &Res) const {
337 const coff_section *sec = toSec(Sec);
339 return object_error::parse_failed;
340 Res = uint64_t(1) << (((sec->Characteristics & 0x00F00000) >> 20) - 1);
341 return object_error::success;
344 error_code COFFObjectFile::isSectionText(DataRefImpl Sec,
345 bool &Result) const {
346 const coff_section *sec = toSec(Sec);
347 Result = sec->Characteristics & COFF::IMAGE_SCN_CNT_CODE;
348 return object_error::success;
351 error_code COFFObjectFile::isSectionData(DataRefImpl Sec,
352 bool &Result) const {
353 const coff_section *sec = toSec(Sec);
354 Result = sec->Characteristics & COFF::IMAGE_SCN_CNT_INITIALIZED_DATA;
355 return object_error::success;
358 error_code COFFObjectFile::isSectionBSS(DataRefImpl Sec,
359 bool &Result) const {
360 const coff_section *sec = toSec(Sec);
361 Result = sec->Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA;
362 return object_error::success;
365 error_code COFFObjectFile::isSectionRequiredForExecution(DataRefImpl Sec,
366 bool &Result) const {
367 // FIXME: Unimplemented
369 return object_error::success;
372 error_code COFFObjectFile::isSectionVirtual(DataRefImpl Sec,
373 bool &Result) const {
374 const coff_section *sec = toSec(Sec);
375 Result = sec->Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA;
376 return object_error::success;
379 error_code COFFObjectFile::isSectionZeroInit(DataRefImpl Sec,
380 bool &Result) const {
381 // FIXME: Unimplemented.
383 return object_error::success;
386 error_code COFFObjectFile::isSectionReadOnlyData(DataRefImpl Sec,
387 bool &Result) const {
388 // FIXME: Unimplemented.
390 return object_error::success;
393 error_code COFFObjectFile::sectionContainsSymbol(DataRefImpl Sec,
395 bool &Result) const {
396 const coff_section *sec = toSec(Sec);
397 const coff_symbol *symb = toSymb(Symb);
398 const coff_section *symb_sec = 0;
399 if (error_code ec = getSection(symb->SectionNumber, symb_sec)) return ec;
404 return object_error::success;
407 relocation_iterator COFFObjectFile::getSectionRelBegin(DataRefImpl Sec) const {
408 const coff_section *sec = toSec(Sec);
410 if (sec->NumberOfRelocations == 0)
413 ret.p = reinterpret_cast<uintptr_t>(base() + sec->PointerToRelocations);
415 return relocation_iterator(RelocationRef(ret, this));
418 relocation_iterator COFFObjectFile::getSectionRelEnd(DataRefImpl Sec) const {
419 const coff_section *sec = toSec(Sec);
421 if (sec->NumberOfRelocations == 0)
424 ret.p = reinterpret_cast<uintptr_t>(
425 reinterpret_cast<const coff_relocation*>(
426 base() + sec->PointerToRelocations)
427 + sec->NumberOfRelocations);
429 return relocation_iterator(RelocationRef(ret, this));
432 COFFObjectFile::COFFObjectFile(MemoryBuffer *Object, error_code &ec)
433 : ObjectFile(Binary::ID_COFF, Object)
440 , StringTableSize(0) {
441 // Check that we at least have enough room for a header.
442 if (!checkSize(Data, ec, sizeof(coff_file_header))) return;
444 // The current location in the file where we are looking at.
447 // PE header is optional and is present only in executables. If it exists,
448 // it is placed right after COFF header.
449 bool hasPEHeader = false;
451 // Check if this is a PE/COFF file.
452 if (base()[0] == 0x4d && base()[1] == 0x5a) {
453 // PE/COFF, seek through MS-DOS compatibility stub and 4-byte
454 // PE signature to find 'normal' COFF header.
455 if (!checkSize(Data, ec, 0x3c + 8)) return;
456 CurPtr = *reinterpret_cast<const ulittle16_t *>(base() + 0x3c);
457 // Check the PE magic bytes. ("PE\0\0")
458 if (std::memcmp(base() + CurPtr, "PE\0\0", 4) != 0) {
459 ec = object_error::parse_failed;
462 CurPtr += 4; // Skip the PE magic bytes.
466 if ((ec = getObject(COFFHeader, Data, base() + CurPtr)))
468 CurPtr += sizeof(coff_file_header);
471 if ((ec = getObject(PE32Header, Data, base() + CurPtr)))
473 if (PE32Header->Magic != 0x10b) {
474 // We only support PE32. If this is PE32 (not PE32+), the magic byte
475 // should be 0x10b. If this is not PE32, continue as if there's no PE
476 // header in this file.
478 } else if (PE32Header->NumberOfRvaAndSize > 0) {
479 const uint8_t *addr = base() + CurPtr + sizeof(pe32_header);
480 uint64_t size = sizeof(data_directory) * PE32Header->NumberOfRvaAndSize;
481 if ((ec = getObject(DataDirectory, Data, addr, size)))
484 CurPtr += COFFHeader->SizeOfOptionalHeader;
487 if ((ec = getObject(SectionTable, Data, base() + CurPtr,
488 COFFHeader->NumberOfSections * sizeof(coff_section))))
491 if (COFFHeader->PointerToSymbolTable != 0) {
492 if ((ec = getObject(SymbolTable, Data,
493 base() + COFFHeader->PointerToSymbolTable,
494 COFFHeader->NumberOfSymbols * sizeof(coff_symbol))))
497 // Find string table.
498 const uint8_t *StringTableAddr = base() + COFFHeader->PointerToSymbolTable
499 + COFFHeader->NumberOfSymbols * sizeof(coff_symbol);
500 const uint32_t *StringTableSizePtr;
501 if ((ec = getObject(StringTableSizePtr, Data, StringTableAddr)))
503 StringTableSize = *StringTableSizePtr;
504 if ((ec = getObject(StringTable, Data, StringTableAddr, StringTableSize)))
507 // Check that the string table is null terminated if has any in it.
508 if (StringTableSize < 4
509 || (StringTableSize > 4 && StringTable[StringTableSize - 1] != 0)) {
510 ec = object_error::parse_failed;
515 ec = object_error::success;
518 symbol_iterator COFFObjectFile::begin_symbols() const {
520 ret.p = reinterpret_cast<intptr_t>(SymbolTable);
521 return symbol_iterator(SymbolRef(ret, this));
524 symbol_iterator COFFObjectFile::end_symbols() const {
525 // The symbol table ends where the string table begins.
527 ret.p = reinterpret_cast<intptr_t>(StringTable);
528 return symbol_iterator(SymbolRef(ret, this));
531 symbol_iterator COFFObjectFile::begin_dynamic_symbols() const {
533 report_fatal_error("Dynamic symbols unimplemented in COFFObjectFile");
536 symbol_iterator COFFObjectFile::end_dynamic_symbols() const {
538 report_fatal_error("Dynamic symbols unimplemented in COFFObjectFile");
541 library_iterator COFFObjectFile::begin_libraries_needed() const {
543 report_fatal_error("Libraries needed unimplemented in COFFObjectFile");
546 library_iterator COFFObjectFile::end_libraries_needed() const {
548 report_fatal_error("Libraries needed unimplemented in COFFObjectFile");
551 StringRef COFFObjectFile::getLoadName() const {
552 // COFF does not have this field.
557 section_iterator COFFObjectFile::begin_sections() const {
559 ret.p = reinterpret_cast<intptr_t>(SectionTable);
560 return section_iterator(SectionRef(ret, this));
563 section_iterator COFFObjectFile::end_sections() const {
565 ret.p = reinterpret_cast<intptr_t>(SectionTable + COFFHeader->NumberOfSections);
566 return section_iterator(SectionRef(ret, this));
569 uint8_t COFFObjectFile::getBytesInAddress() const {
570 return getArch() == Triple::x86_64 ? 8 : 4;
573 StringRef COFFObjectFile::getFileFormatName() const {
574 switch(COFFHeader->Machine) {
575 case COFF::IMAGE_FILE_MACHINE_I386:
577 case COFF::IMAGE_FILE_MACHINE_AMD64:
578 return "COFF-x86-64";
580 return "COFF-<unknown arch>";
584 unsigned COFFObjectFile::getArch() const {
585 switch(COFFHeader->Machine) {
586 case COFF::IMAGE_FILE_MACHINE_I386:
588 case COFF::IMAGE_FILE_MACHINE_AMD64:
589 return Triple::x86_64;
591 return Triple::UnknownArch;
595 // This method is kept here because lld uses this. As soon as we make
596 // lld to use getCOFFHeader, this method will be removed.
597 error_code COFFObjectFile::getHeader(const coff_file_header *&Res) const {
598 return getCOFFHeader(Res);
601 error_code COFFObjectFile::getCOFFHeader(const coff_file_header *&Res) const {
603 return object_error::success;
606 error_code COFFObjectFile::getPE32Header(const pe32_header *&Res) const {
608 return object_error::success;
611 error_code COFFObjectFile::getDataDirectory(uint32_t index,
612 const data_directory *&Res) const {
613 // Error if if there's no data directory or the index is out of range.
614 if (!DataDirectory || index > PE32Header->NumberOfRvaAndSize)
615 return object_error::parse_failed;
616 Res = &DataDirectory[index];
617 return object_error::success;
620 error_code COFFObjectFile::getSection(int32_t index,
621 const coff_section *&Result) const {
622 // Check for special index values.
623 if (index == COFF::IMAGE_SYM_UNDEFINED ||
624 index == COFF::IMAGE_SYM_ABSOLUTE ||
625 index == COFF::IMAGE_SYM_DEBUG)
627 else if (index > 0 && index <= COFFHeader->NumberOfSections)
628 // We already verified the section table data, so no need to check again.
629 Result = SectionTable + (index - 1);
631 return object_error::parse_failed;
632 return object_error::success;
635 error_code COFFObjectFile::getString(uint32_t offset,
636 StringRef &Result) const {
637 if (StringTableSize <= 4)
638 // Tried to get a string from an empty string table.
639 return object_error::parse_failed;
640 if (offset >= StringTableSize)
641 return object_error::unexpected_eof;
642 Result = StringRef(StringTable + offset);
643 return object_error::success;
646 error_code COFFObjectFile::getSymbol(uint32_t index,
647 const coff_symbol *&Result) const {
648 if (index < COFFHeader->NumberOfSymbols)
649 Result = SymbolTable + index;
651 return object_error::parse_failed;
652 return object_error::success;
655 error_code COFFObjectFile::getSymbolName(const coff_symbol *symbol,
656 StringRef &Res) const {
657 // Check for string table entry. First 4 bytes are 0.
658 if (symbol->Name.Offset.Zeroes == 0) {
659 uint32_t Offset = symbol->Name.Offset.Offset;
660 if (error_code ec = getString(Offset, Res))
662 return object_error::success;
665 if (symbol->Name.ShortName[7] == 0)
666 // Null terminated, let ::strlen figure out the length.
667 Res = StringRef(symbol->Name.ShortName);
669 // Not null terminated, use all 8 bytes.
670 Res = StringRef(symbol->Name.ShortName, 8);
671 return object_error::success;
674 ArrayRef<uint8_t> COFFObjectFile::getSymbolAuxData(
675 const coff_symbol *symbol) const {
676 const uint8_t *aux = NULL;
678 if ( symbol->NumberOfAuxSymbols > 0 ) {
679 // AUX data comes immediately after the symbol in COFF
680 aux = reinterpret_cast<const uint8_t *>(symbol + 1);
682 // Verify that the aux symbol points to a valid entry in the symbol table.
683 uintptr_t offset = uintptr_t(aux) - uintptr_t(base());
684 if (offset < COFFHeader->PointerToSymbolTable
685 || offset >= COFFHeader->PointerToSymbolTable
686 + (COFFHeader->NumberOfSymbols * sizeof(coff_symbol)))
687 report_fatal_error("Aux Symbol data was outside of symbol table.");
689 assert((offset - COFFHeader->PointerToSymbolTable) % sizeof(coff_symbol)
690 == 0 && "Aux Symbol data did not point to the beginning of a symbol");
693 return ArrayRef<uint8_t>(aux, symbol->NumberOfAuxSymbols * sizeof(coff_symbol));
696 error_code COFFObjectFile::getSectionName(const coff_section *Sec,
697 StringRef &Res) const {
699 if (Sec->Name[7] == 0)
700 // Null terminated, let ::strlen figure out the length.
703 // Not null terminated, use all 8 bytes.
704 Name = StringRef(Sec->Name, 8);
706 // Check for string table entry. First byte is '/'.
707 if (Name[0] == '/') {
709 if (Name.substr(1).getAsInteger(10, Offset))
710 return object_error::parse_failed;
711 if (error_code ec = getString(Offset, Name))
716 return object_error::success;
719 error_code COFFObjectFile::getSectionContents(const coff_section *Sec,
720 ArrayRef<uint8_t> &Res) const {
721 // The only thing that we need to verify is that the contents is contained
722 // within the file bounds. We don't need to make sure it doesn't cover other
723 // data, as there's nothing that says that is not allowed.
724 uintptr_t ConStart = uintptr_t(base()) + Sec->PointerToRawData;
725 uintptr_t ConEnd = ConStart + Sec->SizeOfRawData;
726 if (ConEnd > uintptr_t(Data->getBufferEnd()))
727 return object_error::parse_failed;
728 Res = ArrayRef<uint8_t>(reinterpret_cast<const unsigned char*>(ConStart),
730 return object_error::success;
733 const coff_relocation *COFFObjectFile::toRel(DataRefImpl Rel) const {
734 return reinterpret_cast<const coff_relocation*>(Rel.p);
736 error_code COFFObjectFile::getRelocationNext(DataRefImpl Rel,
737 RelocationRef &Res) const {
738 Rel.p = reinterpret_cast<uintptr_t>(
739 reinterpret_cast<const coff_relocation*>(Rel.p) + 1);
740 Res = RelocationRef(Rel, this);
741 return object_error::success;
743 error_code COFFObjectFile::getRelocationAddress(DataRefImpl Rel,
744 uint64_t &Res) const {
745 report_fatal_error("getRelocationAddress not implemented in COFFObjectFile");
747 error_code COFFObjectFile::getRelocationOffset(DataRefImpl Rel,
748 uint64_t &Res) const {
749 Res = toRel(Rel)->VirtualAddress;
750 return object_error::success;
752 symbol_iterator COFFObjectFile::getRelocationSymbol(DataRefImpl Rel) const {
753 const coff_relocation* R = toRel(Rel);
755 Symb.p = reinterpret_cast<uintptr_t>(SymbolTable + R->SymbolTableIndex);
756 return symbol_iterator(SymbolRef(Symb, this));
758 error_code COFFObjectFile::getRelocationType(DataRefImpl Rel,
759 uint64_t &Res) const {
760 const coff_relocation* R = toRel(Rel);
762 return object_error::success;
765 const coff_section *COFFObjectFile::getCOFFSection(section_iterator &It) const {
766 return toSec(It->getRawDataRefImpl());
769 const coff_symbol *COFFObjectFile::getCOFFSymbol(symbol_iterator &It) const {
770 return toSymb(It->getRawDataRefImpl());
773 const coff_relocation *COFFObjectFile::getCOFFRelocation(
774 relocation_iterator &It) const {
775 return toRel(It->getRawDataRefImpl());
779 #define LLVM_COFF_SWITCH_RELOC_TYPE_NAME(enum) \
780 case COFF::enum: res = #enum; break;
782 error_code COFFObjectFile::getRelocationTypeName(DataRefImpl Rel,
783 SmallVectorImpl<char> &Result) const {
784 const coff_relocation *reloc = toRel(Rel);
786 switch (COFFHeader->Machine) {
787 case COFF::IMAGE_FILE_MACHINE_AMD64:
788 switch (reloc->Type) {
789 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ABSOLUTE);
790 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ADDR64);
791 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ADDR32);
792 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ADDR32NB);
793 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32);
794 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_1);
795 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_2);
796 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_3);
797 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_4);
798 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_5);
799 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SECTION);
800 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SECREL);
801 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SECREL7);
802 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_TOKEN);
803 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SREL32);
804 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_PAIR);
805 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SSPAN32);
810 case COFF::IMAGE_FILE_MACHINE_I386:
811 switch (reloc->Type) {
812 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_ABSOLUTE);
813 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_DIR16);
814 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_REL16);
815 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_DIR32);
816 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_DIR32NB);
817 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SEG12);
818 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SECTION);
819 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SECREL);
820 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_TOKEN);
821 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SECREL7);
822 LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_REL32);
830 Result.append(res.begin(), res.end());
831 return object_error::success;
834 #undef LLVM_COFF_SWITCH_RELOC_TYPE_NAME
836 error_code COFFObjectFile::getRelocationValueString(DataRefImpl Rel,
837 SmallVectorImpl<char> &Result) const {
838 const coff_relocation *reloc = toRel(Rel);
839 const coff_symbol *symb = 0;
840 if (error_code ec = getSymbol(reloc->SymbolTableIndex, symb)) return ec;
842 sym.p = reinterpret_cast<uintptr_t>(symb);
844 if (error_code ec = getSymbolName(sym, symname)) return ec;
845 Result.append(symname.begin(), symname.end());
846 return object_error::success;
849 error_code COFFObjectFile::getLibraryNext(DataRefImpl LibData,
850 LibraryRef &Result) const {
851 report_fatal_error("getLibraryNext not implemented in COFFObjectFile");
854 error_code COFFObjectFile::getLibraryPath(DataRefImpl LibData,
855 StringRef &Result) const {
856 report_fatal_error("getLibraryPath not implemented in COFFObjectFile");
861 ObjectFile *ObjectFile::createCOFFObjectFile(MemoryBuffer *Object) {
863 return new COFFObjectFile(Object, ec);
866 } // end namespace llvm