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//===- COFF.h - COFF object file implementation -----------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the COFFObjectFile class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_OBJECT_COFF_H
#define LLVM_OBJECT_COFF_H
#include "llvm/Object/ObjectFile.h"
#include "llvm/Support/COFF.h"
#include "llvm/Support/Endian.h"
namespace llvm {
template <typename T>
class ArrayRef;
namespace object {
/// The DOS compatible header at the front of all PE/COFF executables.
struct dos_header {
support::ulittle16_t Magic;
support::ulittle16_t UsedBytesInTheLastPage;
support::ulittle16_t FileSizeInPages;
support::ulittle16_t NumberOfRelocationItems;
support::ulittle16_t HeaderSizeInParagraphs;
support::ulittle16_t MinimumExtraParagraphs;
support::ulittle16_t MaximumExtraParagraphs;
support::ulittle16_t InitialRelativeSS;
support::ulittle16_t InitialSP;
support::ulittle16_t Checksum;
support::ulittle16_t InitialIP;
support::ulittle16_t InitialRelativeCS;
support::ulittle16_t AddressOfRelocationTable;
support::ulittle16_t OverlayNumber;
support::ulittle16_t Reserved[4];
support::ulittle16_t OEMid;
support::ulittle16_t OEMinfo;
support::ulittle16_t Reserved2[10];
support::ulittle32_t AddressOfNewExeHeader;
};
struct coff_file_header {
support::ulittle16_t Machine;
support::ulittle16_t NumberOfSections;
support::ulittle32_t TimeDateStamp;
support::ulittle32_t PointerToSymbolTable;
support::ulittle32_t NumberOfSymbols;
support::ulittle16_t SizeOfOptionalHeader;
support::ulittle16_t Characteristics;
};
/// The 32-bit PE header that follows the COFF header.
struct pe32_header {
support::ulittle16_t Magic;
uint8_t MajorLinkerVersion;
uint8_t MinorLinkerVersion;
support::ulittle32_t SizeOfCode;
support::ulittle32_t SizeOfInitializedData;
support::ulittle32_t SizeOfUninitializedData;
support::ulittle32_t AddressOfEntryPoint;
support::ulittle32_t BaseOfCode;
support::ulittle32_t BaseOfData;
support::ulittle32_t ImageBase;
support::ulittle32_t SectionAlignment;
support::ulittle32_t FileAlignment;
support::ulittle16_t MajorOperatingSystemVersion;
support::ulittle16_t MinorOperatingSystemVersion;
support::ulittle16_t MajorImageVersion;
support::ulittle16_t MinorImageVersion;
support::ulittle16_t MajorSubsystemVersion;
support::ulittle16_t MinorSubsystemVersion;
support::ulittle32_t Win32VersionValue;
support::ulittle32_t SizeOfImage;
support::ulittle32_t SizeOfHeaders;
support::ulittle32_t CheckSum;
support::ulittle16_t Subsystem;
support::ulittle16_t DLLCharacteristics;
support::ulittle32_t SizeOfStackReserve;
support::ulittle32_t SizeOfStackCommit;
support::ulittle32_t SizeOfHeapReserve;
support::ulittle32_t SizeOfHeapCommit;
support::ulittle32_t LoaderFlags;
support::ulittle32_t NumberOfRvaAndSize;
};
/// The 64-bit PE header that follows the COFF header.
struct pe32plus_header {
support::ulittle16_t Magic;
uint8_t MajorLinkerVersion;
uint8_t MinorLinkerVersion;
support::ulittle32_t SizeOfCode;
support::ulittle32_t SizeOfInitializedData;
support::ulittle32_t SizeOfUninitializedData;
support::ulittle32_t AddressOfEntryPoint;
support::ulittle32_t BaseOfCode;
support::ulittle64_t ImageBase;
support::ulittle32_t SectionAlignment;
support::ulittle32_t FileAlignment;
support::ulittle16_t MajorOperatingSystemVersion;
support::ulittle16_t MinorOperatingSystemVersion;
support::ulittle16_t MajorImageVersion;
support::ulittle16_t MinorImageVersion;
support::ulittle16_t MajorSubsystemVersion;
support::ulittle16_t MinorSubsystemVersion;
support::ulittle32_t Win32VersionValue;
support::ulittle32_t SizeOfImage;
support::ulittle32_t SizeOfHeaders;
support::ulittle32_t CheckSum;
support::ulittle16_t Subsystem;
support::ulittle16_t DLLCharacteristics;
support::ulittle64_t SizeOfStackReserve;
support::ulittle64_t SizeOfStackCommit;
support::ulittle64_t SizeOfHeapReserve;
support::ulittle64_t SizeOfHeapCommit;
support::ulittle32_t LoaderFlags;
support::ulittle32_t NumberOfRvaAndSize;
};
struct data_directory {
support::ulittle32_t RelativeVirtualAddress;
support::ulittle32_t Size;
};
struct coff_symbol {
struct StringTableOffset {
support::ulittle32_t Zeroes;
support::ulittle32_t Offset;
};
union {
char ShortName[8];
StringTableOffset Offset;
} Name;
support::ulittle32_t Value;
support::little16_t SectionNumber;
support::ulittle16_t Type;
support::ulittle8_t StorageClass;
support::ulittle8_t NumberOfAuxSymbols;
uint8_t getBaseType() const {
return Type & 0x0F;
}
uint8_t getComplexType() const {
return (Type & 0xF0) >> 4;
}
};
struct coff_section {
char Name[8];
support::ulittle32_t VirtualSize;
support::ulittle32_t VirtualAddress;
support::ulittle32_t SizeOfRawData;
support::ulittle32_t PointerToRawData;
support::ulittle32_t PointerToRelocations;
support::ulittle32_t PointerToLinenumbers;
support::ulittle16_t NumberOfRelocations;
support::ulittle16_t NumberOfLinenumbers;
support::ulittle32_t Characteristics;
};
struct coff_relocation {
support::ulittle32_t VirtualAddress;
support::ulittle32_t SymbolTableIndex;
support::ulittle16_t Type;
};
struct coff_aux_section_definition {
support::ulittle32_t Length;
support::ulittle16_t NumberOfRelocations;
support::ulittle16_t NumberOfLinenumbers;
support::ulittle32_t CheckSum;
support::ulittle16_t Number;
support::ulittle8_t Selection;
char Unused[3];
};
class COFFObjectFile : public ObjectFile {
private:
const coff_file_header *COFFHeader;
const pe32_header *PE32Header;
const coff_section *SectionTable;
const coff_symbol *SymbolTable;
const char *StringTable;
uint32_t StringTableSize;
error_code getString(uint32_t offset, StringRef &Res) const;
const coff_symbol *toSymb(DataRefImpl Symb) const;
const coff_section *toSec(DataRefImpl Sec) const;
const coff_relocation *toRel(DataRefImpl Rel) const;
protected:
virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const;
virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const;
virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const;
virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const;
virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const;
virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const;
virtual error_code getSymbolSection(DataRefImpl Symb,
section_iterator &Res) const;
virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const;
virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const;
virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const;
virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const;
virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const;
virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const;
virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const;
virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const;
virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const;
virtual error_code isSectionRequiredForExecution(DataRefImpl Sec,
bool &Res) const;
virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
bool &Result) const;
virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
virtual error_code getRelocationNext(DataRefImpl Rel,
RelocationRef &Res) const;
virtual error_code getRelocationAddress(DataRefImpl Rel,
uint64_t &Res) const;
virtual error_code getRelocationOffset(DataRefImpl Rel,
uint64_t &Res) const;
virtual symbol_iterator getRelocationSymbol(DataRefImpl Rel) const;
virtual error_code getRelocationType(DataRefImpl Rel,
uint64_t &Res) const;
virtual error_code getRelocationTypeName(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const;
virtual error_code getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const;
virtual error_code getLibraryNext(DataRefImpl LibData,
LibraryRef &Result) const;
virtual error_code getLibraryPath(DataRefImpl LibData,
StringRef &Result) const;
public:
COFFObjectFile(MemoryBuffer *Object, error_code &ec);
virtual symbol_iterator begin_symbols() const;
virtual symbol_iterator end_symbols() const;
virtual symbol_iterator begin_dynamic_symbols() const;
virtual symbol_iterator end_dynamic_symbols() const;
virtual library_iterator begin_libraries_needed() const;
virtual library_iterator end_libraries_needed() const;
virtual section_iterator begin_sections() const;
virtual section_iterator end_sections() const;
const coff_section *getCOFFSection(section_iterator &It) const;
const coff_symbol *getCOFFSymbol(symbol_iterator &It) const;
const coff_relocation *getCOFFRelocation(relocation_iterator &It) const;
virtual uint8_t getBytesInAddress() const;
virtual StringRef getFileFormatName() const;
virtual unsigned getArch() const;
virtual StringRef getLoadName() const;
error_code getHeader(const coff_file_header *&Res) const;
error_code getCOFFHeader(const coff_file_header *&Res) const;
error_code getPE32Header(const pe32_header *&Res) const;
error_code getSection(int32_t index, const coff_section *&Res) const;
error_code getSymbol(uint32_t index, const coff_symbol *&Res) const;
template <typename T>
error_code getAuxSymbol(uint32_t index, const T *&Res) const {
const coff_symbol *s;
error_code ec = getSymbol(index, s);
Res = reinterpret_cast<const T*>(s);
return ec;
}
error_code getSymbolName(const coff_symbol *symbol, StringRef &Res) const;
ArrayRef<uint8_t> getSymbolAuxData(const coff_symbol *symbol) const;
error_code getSectionName(const coff_section *Sec, StringRef &Res) const;
error_code getSectionContents(const coff_section *Sec,
ArrayRef<uint8_t> &Res) const;
static inline bool classof(const Binary *v) {
return v->isCOFF();
}
};
}
}
#endif
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