1 //===- COFF.h - 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 #ifndef LLVM_OBJECT_COFF_H
15 #define LLVM_OBJECT_COFF_H
17 #include "llvm/Object/ObjectFile.h"
18 #include "llvm/Support/COFF.h"
19 #include "llvm/Support/Endian.h"
26 class ImportDirectoryEntryRef;
27 class ExportDirectoryEntryRef;
28 typedef content_iterator<ImportDirectoryEntryRef> import_directory_iterator;
29 typedef content_iterator<ExportDirectoryEntryRef> export_directory_iterator;
31 /// The DOS compatible header at the front of all PE/COFF executables.
33 support::ulittle16_t Magic;
34 support::ulittle16_t UsedBytesInTheLastPage;
35 support::ulittle16_t FileSizeInPages;
36 support::ulittle16_t NumberOfRelocationItems;
37 support::ulittle16_t HeaderSizeInParagraphs;
38 support::ulittle16_t MinimumExtraParagraphs;
39 support::ulittle16_t MaximumExtraParagraphs;
40 support::ulittle16_t InitialRelativeSS;
41 support::ulittle16_t InitialSP;
42 support::ulittle16_t Checksum;
43 support::ulittle16_t InitialIP;
44 support::ulittle16_t InitialRelativeCS;
45 support::ulittle16_t AddressOfRelocationTable;
46 support::ulittle16_t OverlayNumber;
47 support::ulittle16_t Reserved[4];
48 support::ulittle16_t OEMid;
49 support::ulittle16_t OEMinfo;
50 support::ulittle16_t Reserved2[10];
51 support::ulittle32_t AddressOfNewExeHeader;
54 struct coff_file_header {
55 support::ulittle16_t Machine;
56 support::ulittle16_t NumberOfSections;
57 support::ulittle32_t TimeDateStamp;
58 support::ulittle32_t PointerToSymbolTable;
59 support::ulittle32_t NumberOfSymbols;
60 support::ulittle16_t SizeOfOptionalHeader;
61 support::ulittle16_t Characteristics;
63 bool isImportLibrary() const { return NumberOfSections == 0xffff; }
66 /// The 32-bit PE header that follows the COFF header.
68 support::ulittle16_t Magic;
69 uint8_t MajorLinkerVersion;
70 uint8_t MinorLinkerVersion;
71 support::ulittle32_t SizeOfCode;
72 support::ulittle32_t SizeOfInitializedData;
73 support::ulittle32_t SizeOfUninitializedData;
74 support::ulittle32_t AddressOfEntryPoint;
75 support::ulittle32_t BaseOfCode;
76 support::ulittle32_t BaseOfData;
77 support::ulittle32_t ImageBase;
78 support::ulittle32_t SectionAlignment;
79 support::ulittle32_t FileAlignment;
80 support::ulittle16_t MajorOperatingSystemVersion;
81 support::ulittle16_t MinorOperatingSystemVersion;
82 support::ulittle16_t MajorImageVersion;
83 support::ulittle16_t MinorImageVersion;
84 support::ulittle16_t MajorSubsystemVersion;
85 support::ulittle16_t MinorSubsystemVersion;
86 support::ulittle32_t Win32VersionValue;
87 support::ulittle32_t SizeOfImage;
88 support::ulittle32_t SizeOfHeaders;
89 support::ulittle32_t CheckSum;
90 support::ulittle16_t Subsystem;
91 support::ulittle16_t DLLCharacteristics;
92 support::ulittle32_t SizeOfStackReserve;
93 support::ulittle32_t SizeOfStackCommit;
94 support::ulittle32_t SizeOfHeapReserve;
95 support::ulittle32_t SizeOfHeapCommit;
96 support::ulittle32_t LoaderFlags;
97 support::ulittle32_t NumberOfRvaAndSize;
100 /// The 64-bit PE header that follows the COFF header.
101 struct pe32plus_header {
102 support::ulittle16_t Magic;
103 uint8_t MajorLinkerVersion;
104 uint8_t MinorLinkerVersion;
105 support::ulittle32_t SizeOfCode;
106 support::ulittle32_t SizeOfInitializedData;
107 support::ulittle32_t SizeOfUninitializedData;
108 support::ulittle32_t AddressOfEntryPoint;
109 support::ulittle32_t BaseOfCode;
110 support::ulittle64_t ImageBase;
111 support::ulittle32_t SectionAlignment;
112 support::ulittle32_t FileAlignment;
113 support::ulittle16_t MajorOperatingSystemVersion;
114 support::ulittle16_t MinorOperatingSystemVersion;
115 support::ulittle16_t MajorImageVersion;
116 support::ulittle16_t MinorImageVersion;
117 support::ulittle16_t MajorSubsystemVersion;
118 support::ulittle16_t MinorSubsystemVersion;
119 support::ulittle32_t Win32VersionValue;
120 support::ulittle32_t SizeOfImage;
121 support::ulittle32_t SizeOfHeaders;
122 support::ulittle32_t CheckSum;
123 support::ulittle16_t Subsystem;
124 support::ulittle16_t DLLCharacteristics;
125 support::ulittle64_t SizeOfStackReserve;
126 support::ulittle64_t SizeOfStackCommit;
127 support::ulittle64_t SizeOfHeapReserve;
128 support::ulittle64_t SizeOfHeapCommit;
129 support::ulittle32_t LoaderFlags;
130 support::ulittle32_t NumberOfRvaAndSize;
133 struct data_directory {
134 support::ulittle32_t RelativeVirtualAddress;
135 support::ulittle32_t Size;
138 struct import_directory_table_entry {
139 support::ulittle32_t ImportLookupTableRVA;
140 support::ulittle32_t TimeDateStamp;
141 support::ulittle32_t ForwarderChain;
142 support::ulittle32_t NameRVA;
143 support::ulittle32_t ImportAddressTableRVA;
146 struct import_lookup_table_entry32 {
147 support::ulittle32_t data;
149 bool isOrdinal() const { return data & 0x80000000; }
151 uint16_t getOrdinal() const {
152 assert(isOrdinal() && "ILT entry is not an ordinal!");
153 return data & 0xFFFF;
156 uint32_t getHintNameRVA() const {
157 assert(!isOrdinal() && "ILT entry is not a Hint/Name RVA!");
162 struct export_directory_table_entry {
163 support::ulittle32_t ExportFlags;
164 support::ulittle32_t TimeDateStamp;
165 support::ulittle16_t MajorVersion;
166 support::ulittle16_t MinorVersion;
167 support::ulittle32_t NameRVA;
168 support::ulittle32_t OrdinalBase;
169 support::ulittle32_t AddressTableEntries;
170 support::ulittle32_t NumberOfNamePointers;
171 support::ulittle32_t ExportAddressTableRVA;
172 support::ulittle32_t NamePointerRVA;
173 support::ulittle32_t OrdinalTableRVA;
176 union export_address_table_entry {
177 support::ulittle32_t ExportRVA;
178 support::ulittle32_t ForwarderRVA;
181 typedef support::ulittle32_t export_name_pointer_table_entry;
182 typedef support::ulittle16_t export_ordinal_table_entry;
185 struct StringTableOffset {
186 support::ulittle32_t Zeroes;
187 support::ulittle32_t Offset;
192 StringTableOffset Offset;
195 support::ulittle32_t Value;
196 support::little16_t SectionNumber;
198 support::ulittle16_t Type;
200 support::ulittle8_t StorageClass;
201 support::ulittle8_t NumberOfAuxSymbols;
203 uint8_t getBaseType() const {
207 uint8_t getComplexType() const {
208 return (Type & 0xF0) >> 4;
212 struct coff_section {
214 support::ulittle32_t VirtualSize;
215 support::ulittle32_t VirtualAddress;
216 support::ulittle32_t SizeOfRawData;
217 support::ulittle32_t PointerToRawData;
218 support::ulittle32_t PointerToRelocations;
219 support::ulittle32_t PointerToLinenumbers;
220 support::ulittle16_t NumberOfRelocations;
221 support::ulittle16_t NumberOfLinenumbers;
222 support::ulittle32_t Characteristics;
225 struct coff_relocation {
226 support::ulittle32_t VirtualAddress;
227 support::ulittle32_t SymbolTableIndex;
228 support::ulittle16_t Type;
231 struct coff_aux_weak_external {
232 support::ulittle32_t TagIndex;
233 support::ulittle32_t Characteristics;
237 struct coff_aux_section_definition {
238 support::ulittle32_t Length;
239 support::ulittle16_t NumberOfRelocations;
240 support::ulittle16_t NumberOfLinenumbers;
241 support::ulittle32_t CheckSum;
242 support::ulittle16_t Number;
243 support::ulittle8_t Selection;
247 struct coff_load_configuration32 {
248 support::ulittle32_t Characteristics;
249 support::ulittle32_t TimeDateStamp;
250 support::ulittle16_t MajorVersion;
251 support::ulittle16_t MinorVersion;
252 support::ulittle32_t GlobalFlagsClear;
253 support::ulittle32_t GlobalFlagsSet;
254 support::ulittle32_t CriticalSectionDefaultTimeout;
255 support::ulittle32_t DeCommitFreeBlockThreshold;
256 support::ulittle32_t DeCommitTotalFreeThreshold;
257 support::ulittle32_t LockPrefixTable;
258 support::ulittle32_t MaximumAllocationSize;
259 support::ulittle32_t VirtualMemoryThreshold;
260 support::ulittle32_t ProcessAffinityMask;
261 support::ulittle32_t ProcessHeapFlags;
262 support::ulittle16_t CSDVersion;
264 support::ulittle32_t EditList;
265 support::ulittle32_t SecurityCookie;
266 support::ulittle32_t SEHandlerTable;
267 support::ulittle32_t SEHandlerCount;
270 struct coff_runtime_function_x64 {
271 support::ulittle32_t BeginAddress;
272 support::ulittle32_t EndAddress;
273 support::ulittle32_t UnwindInformation;
276 class COFFObjectFile : public ObjectFile {
278 friend class ImportDirectoryEntryRef;
279 friend class ExportDirectoryEntryRef;
280 const coff_file_header *COFFHeader;
281 const pe32_header *PE32Header;
282 const pe32plus_header *PE32PlusHeader;
283 const data_directory *DataDirectory;
284 const coff_section *SectionTable;
285 const coff_symbol *SymbolTable;
286 const char *StringTable;
287 uint32_t StringTableSize;
288 const import_directory_table_entry *ImportDirectory;
289 uint32_t NumberOfImportDirectory;
290 const export_directory_table_entry *ExportDirectory;
292 error_code getString(uint32_t offset, StringRef &Res) const;
294 const coff_symbol *toSymb(DataRefImpl Symb) const;
295 const coff_section *toSec(DataRefImpl Sec) const;
296 const coff_relocation *toRel(DataRefImpl Rel) const;
298 error_code initSymbolTablePtr();
299 error_code initImportTablePtr();
300 error_code initExportTablePtr();
303 void moveSymbolNext(DataRefImpl &Symb) const override;
304 error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const override;
305 error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const override;
306 error_code getSymbolFileOffset(DataRefImpl Symb,
307 uint64_t &Res) const override;
308 error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const override;
309 uint32_t getSymbolFlags(DataRefImpl Symb) const override;
310 error_code getSymbolType(DataRefImpl Symb,
311 SymbolRef::Type &Res) const override;
312 error_code getSymbolSection(DataRefImpl Symb,
313 section_iterator &Res) const override;
314 error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const override;
315 void moveSectionNext(DataRefImpl &Sec) const override;
316 error_code getSectionName(DataRefImpl Sec, StringRef &Res) const override;
317 error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const override;
318 error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const override;
319 error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const override;
320 error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const override;
321 error_code isSectionText(DataRefImpl Sec, bool &Res) const override;
322 error_code isSectionData(DataRefImpl Sec, bool &Res) const override;
323 error_code isSectionBSS(DataRefImpl Sec, bool &Res) const override;
324 error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const override;
325 error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const override;
326 error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const override;
327 error_code isSectionRequiredForExecution(DataRefImpl Sec,
328 bool &Res) const override;
329 error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
330 bool &Result) const override;
331 relocation_iterator section_rel_begin(DataRefImpl Sec) const override;
332 relocation_iterator section_rel_end(DataRefImpl Sec) const override;
334 void moveRelocationNext(DataRefImpl &Rel) const override;
335 error_code getRelocationAddress(DataRefImpl Rel,
336 uint64_t &Res) const override;
337 error_code getRelocationOffset(DataRefImpl Rel, uint64_t &Res) const override;
338 symbol_iterator getRelocationSymbol(DataRefImpl Rel) const override;
339 error_code getRelocationType(DataRefImpl Rel, uint64_t &Res) const override;
340 error_code getRelocationTypeName(DataRefImpl Rel,
341 SmallVectorImpl<char> &Result) const override;
342 error_code getRelocationValueString(DataRefImpl Rel,
343 SmallVectorImpl<char> &Result) const override;
345 error_code getLibraryNext(DataRefImpl LibData,
346 LibraryRef &Result) const override;
347 error_code getLibraryPath(DataRefImpl LibData,
348 StringRef &Result) const override;
351 COFFObjectFile(MemoryBuffer *Object, error_code &EC, bool BufferOwned = true);
352 basic_symbol_iterator symbol_begin_impl() const override;
353 basic_symbol_iterator symbol_end_impl() const override;
354 library_iterator needed_library_begin() const override;
355 library_iterator needed_library_end() const override;
356 section_iterator section_begin() const override;
357 section_iterator section_end() const override;
359 const coff_section *getCOFFSection(section_iterator &It) const;
360 const coff_symbol *getCOFFSymbol(symbol_iterator &It) const;
361 const coff_relocation *getCOFFRelocation(relocation_iterator &It) const;
363 uint8_t getBytesInAddress() const override;
364 StringRef getFileFormatName() const override;
365 unsigned getArch() const override;
366 StringRef getLoadName() const override;
368 import_directory_iterator import_directory_begin() const;
369 import_directory_iterator import_directory_end() const;
370 export_directory_iterator export_directory_begin() const;
371 export_directory_iterator export_directory_end() const;
373 error_code getHeader(const coff_file_header *&Res) const;
374 error_code getCOFFHeader(const coff_file_header *&Res) const;
375 error_code getPE32Header(const pe32_header *&Res) const;
376 error_code getPE32PlusHeader(const pe32plus_header *&Res) const;
377 error_code getDataDirectory(uint32_t index, const data_directory *&Res) const;
378 error_code getSection(int32_t index, const coff_section *&Res) const;
379 error_code getSymbol(uint32_t index, const coff_symbol *&Res) const;
380 template <typename T>
381 error_code getAuxSymbol(uint32_t index, const T *&Res) const {
382 const coff_symbol *s;
383 error_code ec = getSymbol(index, s);
384 Res = reinterpret_cast<const T*>(s);
387 error_code getSymbolName(const coff_symbol *symbol, StringRef &Res) const;
388 ArrayRef<uint8_t> getSymbolAuxData(const coff_symbol *symbol) const;
390 error_code getSectionName(const coff_section *Sec, StringRef &Res) const;
391 error_code getSectionContents(const coff_section *Sec,
392 ArrayRef<uint8_t> &Res) const;
394 error_code getVaPtr(uint64_t VA, uintptr_t &Res) const;
395 error_code getRvaPtr(uint32_t Rva, uintptr_t &Res) const;
396 error_code getHintName(uint32_t Rva, uint16_t &Hint, StringRef &Name) const;
398 static inline bool classof(const Binary *v) {
403 // The iterator for the import directory table.
404 class ImportDirectoryEntryRef {
406 ImportDirectoryEntryRef() : OwningObject(0) {}
407 ImportDirectoryEntryRef(const import_directory_table_entry *Table, uint32_t I,
408 const COFFObjectFile *Owner)
409 : ImportTable(Table), Index(I), OwningObject(Owner) {}
411 bool operator==(const ImportDirectoryEntryRef &Other) const;
413 error_code getName(StringRef &Result) const;
416 getImportTableEntry(const import_directory_table_entry *&Result) const;
419 getImportLookupEntry(const import_lookup_table_entry32 *&Result) const;
422 const import_directory_table_entry *ImportTable;
424 const COFFObjectFile *OwningObject;
427 // The iterator for the export directory table entry.
428 class ExportDirectoryEntryRef {
430 ExportDirectoryEntryRef() : OwningObject(0) {}
431 ExportDirectoryEntryRef(const export_directory_table_entry *Table, uint32_t I,
432 const COFFObjectFile *Owner)
433 : ExportTable(Table), Index(I), OwningObject(Owner) {}
435 bool operator==(const ExportDirectoryEntryRef &Other) const;
438 error_code getDllName(StringRef &Result) const;
439 error_code getOrdinalBase(uint32_t &Result) const;
440 error_code getOrdinal(uint32_t &Result) const;
441 error_code getExportRVA(uint32_t &Result) const;
442 error_code getSymbolName(StringRef &Result) const;
445 const export_directory_table_entry *ExportTable;
447 const COFFObjectFile *OwningObject;
449 } // end namespace object
450 } // end namespace llvm