//===----------------------------------------------------------------------===//
#include "llvm/Object/COFF.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/Triple.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/raw_ostream.h"
+#include <cctype>
+#include <limits>
using namespace llvm;
using namespace object;
-namespace {
using support::ulittle8_t;
using support::ulittle16_t;
using support::ulittle32_t;
using support::little16_t;
+
+// Returns false if size is greater than the buffer size. And sets ec.
+static bool checkSize(const MemoryBuffer *M, error_code &EC, uint64_t Size) {
+ if (M->getBufferSize() < Size) {
+ EC = object_error::unexpected_eof;
+ return false;
+ }
+ return true;
}
-SymbolRef COFFObjectFile::getSymbolNext(DataRefImpl Symb) const {
- const coff_symbol *symb = reinterpret_cast<const coff_symbol*>(Symb.p);
- symb += 1 + symb->NumberOfAuxSymbols;
- Symb.p = reinterpret_cast<intptr_t>(symb);
- return SymbolRef(Symb, this);
+// Sets Obj unless any bytes in [addr, addr + size) fall outsize of m.
+// Returns unexpected_eof if error.
+template<typename T>
+static error_code getObject(const T *&Obj, const MemoryBuffer *M,
+ const uint8_t *Ptr, const size_t Size = sizeof(T)) {
+ uintptr_t Addr = uintptr_t(Ptr);
+ if (Addr + Size < Addr ||
+ Addr + Size < Size ||
+ Addr + Size > uintptr_t(M->getBufferEnd())) {
+ return object_error::unexpected_eof;
+ }
+ Obj = reinterpret_cast<const T *>(Addr);
+ return object_error::success;
}
-StringRef COFFObjectFile::getSymbolName(DataRefImpl Symb) const {
- const coff_symbol *symb = reinterpret_cast<const coff_symbol*>(Symb.p);
- // Check for string table entry. First 4 bytes are 0.
- if (symb->Name.Offset.Zeroes == 0) {
- uint32_t Offset = symb->Name.Offset.Offset;
- return StringRef(getString(Offset));
+// Decode a string table entry in base 64 (//AAAAAA). Expects \arg Str without
+// prefixed slashes.
+static bool decodeBase64StringEntry(StringRef Str, uint32_t &Result) {
+ assert(Str.size() <= 6 && "String too long, possible overflow.");
+ if (Str.size() > 6)
+ return true;
+
+ uint64_t Value = 0;
+ while (!Str.empty()) {
+ unsigned CharVal;
+ if (Str[0] >= 'A' && Str[0] <= 'Z') // 0..25
+ CharVal = Str[0] - 'A';
+ else if (Str[0] >= 'a' && Str[0] <= 'z') // 26..51
+ CharVal = Str[0] - 'a' + 26;
+ else if (Str[0] >= '0' && Str[0] <= '9') // 52..61
+ CharVal = Str[0] - '0' + 52;
+ else if (Str[0] == '+') // 62
+ CharVal = 62;
+ else if (Str[0] == '/') // 63
+ CharVal = 63;
+ else
+ return true;
+
+ Value = (Value * 64) + CharVal;
+ Str = Str.substr(1);
}
- if (symb->Name.ShortName[7] == 0)
- // Null terminated, let ::strlen figure out the length.
- return StringRef(symb->Name.ShortName);
- // Not null terminated, use all 8 bytes.
- return StringRef(symb->Name.ShortName, 8);
+ if (Value > std::numeric_limits<uint32_t>::max())
+ return true;
+
+ Result = static_cast<uint32_t>(Value);
+ return false;
+}
+
+const coff_symbol *COFFObjectFile::toSymb(DataRefImpl Ref) const {
+ const coff_symbol *Addr = reinterpret_cast<const coff_symbol*>(Ref.p);
+
+# ifndef NDEBUG
+ // Verify that the symbol points to a valid entry in the symbol table.
+ uintptr_t Offset = uintptr_t(Addr) - uintptr_t(base());
+ if (Offset < COFFHeader->PointerToSymbolTable
+ || Offset >= COFFHeader->PointerToSymbolTable
+ + (COFFHeader->NumberOfSymbols * sizeof(coff_symbol)))
+ report_fatal_error("Symbol was outside of symbol table.");
+
+ assert((Offset - COFFHeader->PointerToSymbolTable) % sizeof(coff_symbol)
+ == 0 && "Symbol did not point to the beginning of a symbol");
+# endif
+
+ return Addr;
+}
+
+const coff_section *COFFObjectFile::toSec(DataRefImpl Ref) const {
+ const coff_section *Addr = reinterpret_cast<const coff_section*>(Ref.p);
+
+# ifndef NDEBUG
+ // Verify that the section points to a valid entry in the section table.
+ if (Addr < SectionTable
+ || Addr >= (SectionTable + COFFHeader->NumberOfSections))
+ report_fatal_error("Section was outside of section table.");
+
+ uintptr_t Offset = uintptr_t(Addr) - uintptr_t(SectionTable);
+ assert(Offset % sizeof(coff_section) == 0 &&
+ "Section did not point to the beginning of a section");
+# endif
+
+ return Addr;
+}
+
+void COFFObjectFile::moveSymbolNext(DataRefImpl &Ref) const {
+ const coff_symbol *Symb = toSymb(Ref);
+ Symb += 1 + Symb->NumberOfAuxSymbols;
+ Ref.p = reinterpret_cast<uintptr_t>(Symb);
+}
+
+error_code COFFObjectFile::getSymbolName(DataRefImpl Ref,
+ StringRef &Result) const {
+ const coff_symbol *Symb = toSymb(Ref);
+ return getSymbolName(Symb, Result);
+}
+
+error_code COFFObjectFile::getSymbolFileOffset(DataRefImpl Ref,
+ uint64_t &Result) const {
+ const coff_symbol *Symb = toSymb(Ref);
+ const coff_section *Section = NULL;
+ if (error_code EC = getSection(Symb->SectionNumber, Section))
+ return EC;
+
+ if (Symb->SectionNumber == COFF::IMAGE_SYM_UNDEFINED)
+ Result = UnknownAddressOrSize;
+ else if (Section)
+ Result = Section->PointerToRawData + Symb->Value;
+ else
+ Result = Symb->Value;
+ return object_error::success;
}
-uint64_t COFFObjectFile::getSymbolAddress(DataRefImpl Symb) const {
- const coff_symbol *symb = reinterpret_cast<const coff_symbol*>(Symb.p);
- const coff_section *Section = getSection(symb->SectionNumber);
- char Type = getSymbolNMTypeChar(Symb);
- if (Type == 'U' || Type == 'w')
- return UnknownAddressOrSize;
- if (Section)
- return Section->VirtualAddress + symb->Value;
- return symb->Value;
+error_code COFFObjectFile::getSymbolAddress(DataRefImpl Ref,
+ uint64_t &Result) const {
+ const coff_symbol *Symb = toSymb(Ref);
+ const coff_section *Section = NULL;
+ if (error_code EC = getSection(Symb->SectionNumber, Section))
+ return EC;
+
+ if (Symb->SectionNumber == COFF::IMAGE_SYM_UNDEFINED)
+ Result = UnknownAddressOrSize;
+ else if (Section)
+ Result = Section->VirtualAddress + Symb->Value;
+ else
+ Result = Symb->Value;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::getSymbolType(DataRefImpl Ref,
+ SymbolRef::Type &Result) const {
+ const coff_symbol *Symb = toSymb(Ref);
+ Result = SymbolRef::ST_Other;
+ if (Symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL &&
+ Symb->SectionNumber == COFF::IMAGE_SYM_UNDEFINED) {
+ Result = SymbolRef::ST_Unknown;
+ } else if (Symb->getComplexType() == COFF::IMAGE_SYM_DTYPE_FUNCTION) {
+ Result = SymbolRef::ST_Function;
+ } else {
+ uint32_t Characteristics = 0;
+ if (Symb->SectionNumber > 0) {
+ const coff_section *Section = NULL;
+ if (error_code EC = getSection(Symb->SectionNumber, Section))
+ return EC;
+ Characteristics = Section->Characteristics;
+ }
+ if (Characteristics & COFF::IMAGE_SCN_MEM_READ &&
+ ~Characteristics & COFF::IMAGE_SCN_MEM_WRITE) // Read only.
+ Result = SymbolRef::ST_Data;
+ }
+ return object_error::success;
+}
+
+uint32_t COFFObjectFile::getSymbolFlags(DataRefImpl Ref) const {
+ const coff_symbol *Symb = toSymb(Ref);
+ uint32_t Result = SymbolRef::SF_None;
+
+ // TODO: Correctly set SF_FormatSpecific, SF_Common
+
+ if (Symb->SectionNumber == COFF::IMAGE_SYM_UNDEFINED) {
+ if (Symb->Value == 0)
+ Result |= SymbolRef::SF_Undefined;
+ else
+ Result |= SymbolRef::SF_Common;
+ }
+
+
+ // TODO: This are certainly too restrictive.
+ if (Symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL)
+ Result |= SymbolRef::SF_Global;
+
+ if (Symb->StorageClass == COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL)
+ Result |= SymbolRef::SF_Weak;
+
+ if (Symb->SectionNumber == COFF::IMAGE_SYM_ABSOLUTE)
+ Result |= SymbolRef::SF_Absolute;
+
+ return Result;
}
-uint64_t COFFObjectFile::getSymbolSize(DataRefImpl Symb) const {
+error_code COFFObjectFile::getSymbolSize(DataRefImpl Ref,
+ uint64_t &Result) const {
// FIXME: Return the correct size. This requires looking at all the symbols
// in the same section as this symbol, and looking for either the next
// symbol, or the end of the section.
- const coff_symbol *symb = reinterpret_cast<const coff_symbol*>(Symb.p);
- const coff_section *Section = getSection(symb->SectionNumber);
- char Type = getSymbolNMTypeChar(Symb);
- if (Type == 'U' || Type == 'w')
- return UnknownAddressOrSize;
- if (Section)
- return Section->SizeOfRawData - symb->Value;
- return 0;
-}
-
-char COFFObjectFile::getSymbolNMTypeChar(DataRefImpl Symb) const {
- const coff_symbol *symb = reinterpret_cast<const coff_symbol*>(Symb.p);
- char ret = StringSwitch<char>(getSymbolName(Symb))
- .StartsWith(".debug", 'N')
- .StartsWith(".sxdata", 'N')
- .Default('?');
-
- if (ret != '?')
- return ret;
-
- uint32_t Characteristics = 0;
- if (const coff_section *Section = getSection(symb->SectionNumber)) {
- Characteristics = Section->Characteristics;
- }
+ const coff_symbol *Symb = toSymb(Ref);
+ const coff_section *Section = NULL;
+ if (error_code EC = getSection(Symb->SectionNumber, Section))
+ return EC;
- switch (symb->SectionNumber) {
- case COFF::IMAGE_SYM_UNDEFINED:
- // Check storage classes.
- if (symb->StorageClass == COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL)
- return 'w'; // Don't do ::toupper.
- else
- ret = 'u';
- break;
- case COFF::IMAGE_SYM_ABSOLUTE:
- ret = 'a';
- break;
- case COFF::IMAGE_SYM_DEBUG:
- ret = 'n';
- break;
- default:
- // Check section type.
- if (Characteristics & COFF::IMAGE_SCN_CNT_CODE)
- ret = 't';
- else if ( Characteristics & COFF::IMAGE_SCN_MEM_READ
- && ~Characteristics & COFF::IMAGE_SCN_MEM_WRITE) // Read only.
- ret = 'r';
- else if (Characteristics & COFF::IMAGE_SCN_CNT_INITIALIZED_DATA)
- ret = 'd';
- else if (Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA)
- ret = 'b';
- else if (Characteristics & COFF::IMAGE_SCN_LNK_INFO)
- ret = 'i';
-
- // Check for section symbol.
- else if ( symb->StorageClass == COFF::IMAGE_SYM_CLASS_STATIC
- && symb->Value == 0)
- ret = 's';
+ if (Symb->SectionNumber == COFF::IMAGE_SYM_UNDEFINED)
+ Result = UnknownAddressOrSize;
+ else if (Section)
+ Result = Section->SizeOfRawData - Symb->Value;
+ else
+ Result = 0;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::getSymbolSection(DataRefImpl Ref,
+ section_iterator &Result) const {
+ const coff_symbol *Symb = toSymb(Ref);
+ if (Symb->SectionNumber <= COFF::IMAGE_SYM_UNDEFINED)
+ Result = section_end();
+ else {
+ const coff_section *Sec = 0;
+ if (error_code EC = getSection(Symb->SectionNumber, Sec)) return EC;
+ DataRefImpl Ref;
+ Ref.p = reinterpret_cast<uintptr_t>(Sec);
+ Result = section_iterator(SectionRef(Ref, this));
}
+ return object_error::success;
+}
- if (symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL)
- ret = ::toupper(ret);
+error_code COFFObjectFile::getSymbolValue(DataRefImpl Ref,
+ uint64_t &Val) const {
+ report_fatal_error("getSymbolValue unimplemented in COFFObjectFile");
+}
- return ret;
+void COFFObjectFile::moveSectionNext(DataRefImpl &Ref) const {
+ const coff_section *Sec = toSec(Ref);
+ Sec += 1;
+ Ref.p = reinterpret_cast<uintptr_t>(Sec);
}
-bool COFFObjectFile::isSymbolInternal(DataRefImpl Symb) const {
- return false;
+error_code COFFObjectFile::getSectionName(DataRefImpl Ref,
+ StringRef &Result) const {
+ const coff_section *Sec = toSec(Ref);
+ return getSectionName(Sec, Result);
}
-SectionRef COFFObjectFile::getSectionNext(DataRefImpl Sec) const {
- const coff_section *sec = reinterpret_cast<const coff_section*>(Sec.p);
- sec += 1;
- Sec.p = reinterpret_cast<intptr_t>(sec);
- return SectionRef(Sec, this);
+error_code COFFObjectFile::getSectionAddress(DataRefImpl Ref,
+ uint64_t &Result) const {
+ const coff_section *Sec = toSec(Ref);
+ Result = Sec->VirtualAddress;
+ return object_error::success;
}
-StringRef COFFObjectFile::getSectionName(DataRefImpl Sec) const {
- const coff_section *sec = reinterpret_cast<const coff_section*>(Sec.p);
- StringRef name;
- if (sec->Name[7] == 0)
- // Null terminated, let ::strlen figure out the length.
- name = sec->Name;
+error_code COFFObjectFile::getSectionSize(DataRefImpl Ref,
+ uint64_t &Result) const {
+ const coff_section *Sec = toSec(Ref);
+ Result = Sec->SizeOfRawData;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::getSectionContents(DataRefImpl Ref,
+ StringRef &Result) const {
+ const coff_section *Sec = toSec(Ref);
+ ArrayRef<uint8_t> Res;
+ error_code EC = getSectionContents(Sec, Res);
+ Result = StringRef(reinterpret_cast<const char*>(Res.data()), Res.size());
+ return EC;
+}
+
+error_code COFFObjectFile::getSectionAlignment(DataRefImpl Ref,
+ uint64_t &Res) const {
+ const coff_section *Sec = toSec(Ref);
+ if (!Sec)
+ return object_error::parse_failed;
+ Res = uint64_t(1) << (((Sec->Characteristics & 0x00F00000) >> 20) - 1);
+ return object_error::success;
+}
+
+error_code COFFObjectFile::isSectionText(DataRefImpl Ref,
+ bool &Result) const {
+ const coff_section *Sec = toSec(Ref);
+ Result = Sec->Characteristics & COFF::IMAGE_SCN_CNT_CODE;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::isSectionData(DataRefImpl Ref,
+ bool &Result) const {
+ const coff_section *Sec = toSec(Ref);
+ Result = Sec->Characteristics & COFF::IMAGE_SCN_CNT_INITIALIZED_DATA;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::isSectionBSS(DataRefImpl Ref,
+ bool &Result) const {
+ const coff_section *Sec = toSec(Ref);
+ Result = Sec->Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::isSectionRequiredForExecution(DataRefImpl Ref,
+ bool &Result) const {
+ // FIXME: Unimplemented
+ Result = true;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::isSectionVirtual(DataRefImpl Ref,
+ bool &Result) const {
+ const coff_section *Sec = toSec(Ref);
+ Result = Sec->Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::isSectionZeroInit(DataRefImpl Ref,
+ bool &Result) const {
+ // FIXME: Unimplemented.
+ Result = false;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::isSectionReadOnlyData(DataRefImpl Ref,
+ bool &Result) const {
+ // FIXME: Unimplemented.
+ Result = false;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::sectionContainsSymbol(DataRefImpl SecRef,
+ DataRefImpl SymbRef,
+ bool &Result) const {
+ const coff_section *Sec = toSec(SecRef);
+ const coff_symbol *Symb = toSymb(SymbRef);
+ const coff_section *SymbSec = 0;
+ if (error_code EC = getSection(Symb->SectionNumber, SymbSec)) return EC;
+ if (SymbSec == Sec)
+ Result = true;
else
- // Not null terminated, use all 8 bytes.
- name = StringRef(sec->Name, 8);
+ Result = false;
+ return object_error::success;
+}
- // Check for string table entry. First byte is '/'.
- if (name[0] == '/') {
- uint32_t Offset;
- name.substr(1).getAsInteger(10, Offset);
- return StringRef(getString(Offset));
- }
+relocation_iterator COFFObjectFile::section_rel_begin(DataRefImpl Ref) const {
+ const coff_section *Sec = toSec(Ref);
+ DataRefImpl Ret;
+ if (Sec->NumberOfRelocations == 0)
+ Ret.p = 0;
+ else
+ Ret.p = reinterpret_cast<uintptr_t>(base() + Sec->PointerToRelocations);
- // It's just a normal name.
- return name;
+ return relocation_iterator(RelocationRef(Ret, this));
}
-uint64_t COFFObjectFile::getSectionAddress(DataRefImpl Sec) const {
- const coff_section *sec = reinterpret_cast<const coff_section*>(Sec.p);
- return sec->VirtualAddress;
+relocation_iterator COFFObjectFile::section_rel_end(DataRefImpl Ref) const {
+ const coff_section *Sec = toSec(Ref);
+ DataRefImpl Ret;
+ if (Sec->NumberOfRelocations == 0)
+ Ret.p = 0;
+ else
+ Ret.p = reinterpret_cast<uintptr_t>(
+ reinterpret_cast<const coff_relocation*>(
+ base() + Sec->PointerToRelocations)
+ + Sec->NumberOfRelocations);
+
+ return relocation_iterator(RelocationRef(Ret, this));
+}
+
+// Initialize the pointer to the symbol table.
+error_code COFFObjectFile::initSymbolTablePtr() {
+ if (error_code EC = getObject(
+ SymbolTable, Data, base() + COFFHeader->PointerToSymbolTable,
+ COFFHeader->NumberOfSymbols * sizeof(coff_symbol)))
+ return EC;
+
+ // Find string table. The first four byte of the string table contains the
+ // total size of the string table, including the size field itself. If the
+ // string table is empty, the value of the first four byte would be 4.
+ const uint8_t *StringTableAddr =
+ base() + COFFHeader->PointerToSymbolTable +
+ COFFHeader->NumberOfSymbols * sizeof(coff_symbol);
+ const ulittle32_t *StringTableSizePtr;
+ if (error_code EC = getObject(StringTableSizePtr, Data, StringTableAddr))
+ return EC;
+ StringTableSize = *StringTableSizePtr;
+ if (error_code EC =
+ getObject(StringTable, Data, StringTableAddr, StringTableSize))
+ return EC;
+
+ // Treat table sizes < 4 as empty because contrary to the PECOFF spec, some
+ // tools like cvtres write a size of 0 for an empty table instead of 4.
+ if (StringTableSize < 4)
+ StringTableSize = 4;
+
+ // Check that the string table is null terminated if has any in it.
+ if (StringTableSize > 4 && StringTable[StringTableSize - 1] != 0)
+ return object_error::parse_failed;
+ return object_error::success;
+}
+
+// Returns the file offset for the given VA.
+error_code COFFObjectFile::getVaPtr(uint64_t Addr, uintptr_t &Res) const {
+ uint64_t ImageBase = PE32Header ? (uint64_t)PE32Header->ImageBase
+ : (uint64_t)PE32PlusHeader->ImageBase;
+ uint64_t Rva = Addr - ImageBase;
+ assert(Rva <= UINT32_MAX);
+ return getRvaPtr((uint32_t)Rva, Res);
}
-uint64_t COFFObjectFile::getSectionSize(DataRefImpl Sec) const {
- const coff_section *sec = reinterpret_cast<const coff_section*>(Sec.p);
- return sec->SizeOfRawData;
+// Returns the file offset for the given RVA.
+error_code COFFObjectFile::getRvaPtr(uint32_t Addr, uintptr_t &Res) const {
+ for (const SectionRef &S : sections()) {
+ const coff_section *Section = getCOFFSection(S);
+ uint32_t SectionStart = Section->VirtualAddress;
+ uint32_t SectionEnd = Section->VirtualAddress + Section->VirtualSize;
+ if (SectionStart <= Addr && Addr < SectionEnd) {
+ uint32_t Offset = Addr - SectionStart;
+ Res = uintptr_t(base()) + Section->PointerToRawData + Offset;
+ return object_error::success;
+ }
+ }
+ return object_error::parse_failed;
}
-StringRef COFFObjectFile::getSectionContents(DataRefImpl Sec) const {
- const coff_section *sec = reinterpret_cast<const coff_section*>(Sec.p);
- return StringRef(reinterpret_cast<const char *>(base()
- + sec->PointerToRawData),
- sec->SizeOfRawData);
+// Returns hint and name fields, assuming \p Rva is pointing to a Hint/Name
+// table entry.
+error_code COFFObjectFile::
+getHintName(uint32_t Rva, uint16_t &Hint, StringRef &Name) const {
+ uintptr_t IntPtr = 0;
+ if (error_code EC = getRvaPtr(Rva, IntPtr))
+ return EC;
+ const uint8_t *Ptr = reinterpret_cast<const uint8_t *>(IntPtr);
+ Hint = *reinterpret_cast<const ulittle16_t *>(Ptr);
+ Name = StringRef(reinterpret_cast<const char *>(Ptr + 2));
+ return object_error::success;
}
-bool COFFObjectFile::isSectionText(DataRefImpl Sec) const {
- const coff_section *sec = reinterpret_cast<const coff_section*>(Sec.p);
- return sec->Characteristics & COFF::IMAGE_SCN_CNT_CODE;
+// Find the import table.
+error_code COFFObjectFile::initImportTablePtr() {
+ // First, we get the RVA of the import table. If the file lacks a pointer to
+ // the import table, do nothing.
+ const data_directory *DataEntry;
+ if (getDataDirectory(COFF::IMPORT_TABLE, DataEntry))
+ return object_error::success;
+
+ // Do nothing if the pointer to import table is NULL.
+ if (DataEntry->RelativeVirtualAddress == 0)
+ return object_error::success;
+
+ uint32_t ImportTableRva = DataEntry->RelativeVirtualAddress;
+ NumberOfImportDirectory = DataEntry->Size /
+ sizeof(import_directory_table_entry);
+
+ // Find the section that contains the RVA. This is needed because the RVA is
+ // the import table's memory address which is different from its file offset.
+ uintptr_t IntPtr = 0;
+ if (error_code EC = getRvaPtr(ImportTableRva, IntPtr))
+ return EC;
+ ImportDirectory = reinterpret_cast<
+ const import_directory_table_entry *>(IntPtr);
+ return object_error::success;
}
-COFFObjectFile::COFFObjectFile(MemoryBuffer *Object, error_code &ec)
- : ObjectFile(Binary::isCOFF, Object, ec) {
+// Find the export table.
+error_code COFFObjectFile::initExportTablePtr() {
+ // First, we get the RVA of the export table. If the file lacks a pointer to
+ // the export table, do nothing.
+ const data_directory *DataEntry;
+ if (getDataDirectory(COFF::EXPORT_TABLE, DataEntry))
+ return object_error::success;
+
+ // Do nothing if the pointer to export table is NULL.
+ if (DataEntry->RelativeVirtualAddress == 0)
+ return object_error::success;
- HeaderOff = 0;
+ uint32_t ExportTableRva = DataEntry->RelativeVirtualAddress;
+ uintptr_t IntPtr = 0;
+ if (error_code EC = getRvaPtr(ExportTableRva, IntPtr))
+ return EC;
+ ExportDirectory =
+ reinterpret_cast<const export_directory_table_entry *>(IntPtr);
+ return object_error::success;
+}
+COFFObjectFile::COFFObjectFile(MemoryBuffer *Object, error_code &EC,
+ bool BufferOwned)
+ : ObjectFile(Binary::ID_COFF, Object, BufferOwned), COFFHeader(0),
+ PE32Header(0), PE32PlusHeader(0), DataDirectory(0), SectionTable(0),
+ SymbolTable(0), StringTable(0), StringTableSize(0), ImportDirectory(0),
+ NumberOfImportDirectory(0), ExportDirectory(0) {
+ // Check that we at least have enough room for a header.
+ if (!checkSize(Data, EC, sizeof(coff_file_header))) return;
+
+ // The current location in the file where we are looking at.
+ uint64_t CurPtr = 0;
+
+ // PE header is optional and is present only in executables. If it exists,
+ // it is placed right after COFF header.
+ bool HasPEHeader = false;
+
+ // Check if this is a PE/COFF file.
if (base()[0] == 0x4d && base()[1] == 0x5a) {
// PE/COFF, seek through MS-DOS compatibility stub and 4-byte
// PE signature to find 'normal' COFF header.
- HeaderOff += *reinterpret_cast<const ulittle32_t *>(base() + 0x3c);
- HeaderOff += 4;
+ if (!checkSize(Data, EC, 0x3c + 8)) return;
+ CurPtr = *reinterpret_cast<const ulittle16_t *>(base() + 0x3c);
+ // Check the PE magic bytes. ("PE\0\0")
+ if (std::memcmp(base() + CurPtr, "PE\0\0", 4) != 0) {
+ EC = object_error::parse_failed;
+ return;
+ }
+ CurPtr += 4; // Skip the PE magic bytes.
+ HasPEHeader = true;
+ }
+
+ if ((EC = getObject(COFFHeader, Data, base() + CurPtr)))
+ return;
+ CurPtr += sizeof(coff_file_header);
+
+ if (HasPEHeader) {
+ const pe32_header *Header;
+ if ((EC = getObject(Header, Data, base() + CurPtr)))
+ return;
+
+ const uint8_t *DataDirAddr;
+ uint64_t DataDirSize;
+ if (Header->Magic == 0x10b) {
+ PE32Header = Header;
+ DataDirAddr = base() + CurPtr + sizeof(pe32_header);
+ DataDirSize = sizeof(data_directory) * PE32Header->NumberOfRvaAndSize;
+ } else if (Header->Magic == 0x20b) {
+ PE32PlusHeader = reinterpret_cast<const pe32plus_header *>(Header);
+ DataDirAddr = base() + CurPtr + sizeof(pe32plus_header);
+ DataDirSize = sizeof(data_directory) * PE32PlusHeader->NumberOfRvaAndSize;
+ } else {
+ // It's neither PE32 nor PE32+.
+ EC = object_error::parse_failed;
+ return;
+ }
+ if ((EC = getObject(DataDirectory, Data, DataDirAddr, DataDirSize)))
+ return;
+ CurPtr += COFFHeader->SizeOfOptionalHeader;
}
- Header = reinterpret_cast<const coff_file_header *>(base() + HeaderOff);
- SectionTable =
- reinterpret_cast<const coff_section *>( base()
- + HeaderOff
- + sizeof(coff_file_header)
- + Header->SizeOfOptionalHeader);
- SymbolTable =
- reinterpret_cast<const coff_symbol *>(base()
- + Header->PointerToSymbolTable);
+ if (COFFHeader->isImportLibrary())
+ return;
- // Find string table.
- StringTable = reinterpret_cast<const char *>(base())
- + Header->PointerToSymbolTable
- + Header->NumberOfSymbols * 18;
+ if ((EC = getObject(SectionTable, Data, base() + CurPtr,
+ COFFHeader->NumberOfSections * sizeof(coff_section))))
+ return;
+
+ // Initialize the pointer to the symbol table.
+ if (COFFHeader->PointerToSymbolTable != 0)
+ if ((EC = initSymbolTablePtr()))
+ return;
+
+ // Initialize the pointer to the beginning of the import table.
+ if ((EC = initImportTablePtr()))
+ return;
+
+ // Initialize the pointer to the export table.
+ if ((EC = initExportTablePtr()))
+ return;
+
+ EC = object_error::success;
}
-ObjectFile::symbol_iterator COFFObjectFile::begin_symbols() const {
- DataRefImpl ret;
- memset(&ret, 0, sizeof(DataRefImpl));
- ret.p = reinterpret_cast<intptr_t>(SymbolTable);
- return symbol_iterator(SymbolRef(ret, this));
+basic_symbol_iterator COFFObjectFile::symbol_begin_impl() const {
+ DataRefImpl Ret;
+ Ret.p = reinterpret_cast<uintptr_t>(SymbolTable);
+ return basic_symbol_iterator(SymbolRef(Ret, this));
}
-ObjectFile::symbol_iterator COFFObjectFile::end_symbols() const {
+basic_symbol_iterator COFFObjectFile::symbol_end_impl() const {
// The symbol table ends where the string table begins.
- DataRefImpl ret;
- memset(&ret, 0, sizeof(DataRefImpl));
- ret.p = reinterpret_cast<intptr_t>(StringTable);
- return symbol_iterator(SymbolRef(ret, this));
+ DataRefImpl Ret;
+ Ret.p = reinterpret_cast<uintptr_t>(StringTable);
+ return basic_symbol_iterator(SymbolRef(Ret, this));
+}
+
+library_iterator COFFObjectFile::needed_library_begin() const {
+ // TODO: implement
+ report_fatal_error("Libraries needed unimplemented in COFFObjectFile");
}
-ObjectFile::section_iterator COFFObjectFile::begin_sections() const {
- DataRefImpl ret;
- memset(&ret, 0, sizeof(DataRefImpl));
- ret.p = reinterpret_cast<intptr_t>(SectionTable);
- return section_iterator(SectionRef(ret, this));
+library_iterator COFFObjectFile::needed_library_end() const {
+ // TODO: implement
+ report_fatal_error("Libraries needed unimplemented in COFFObjectFile");
}
-ObjectFile::section_iterator COFFObjectFile::end_sections() const {
- DataRefImpl ret;
- memset(&ret, 0, sizeof(DataRefImpl));
- ret.p = reinterpret_cast<intptr_t>(SectionTable + Header->NumberOfSections);
- return section_iterator(SectionRef(ret, this));
+StringRef COFFObjectFile::getLoadName() const {
+ // COFF does not have this field.
+ return "";
+}
+
+import_directory_iterator COFFObjectFile::import_directory_begin() const {
+ return import_directory_iterator(
+ ImportDirectoryEntryRef(ImportDirectory, 0, this));
+}
+
+import_directory_iterator COFFObjectFile::import_directory_end() const {
+ return import_directory_iterator(
+ ImportDirectoryEntryRef(ImportDirectory, NumberOfImportDirectory, this));
+}
+
+export_directory_iterator COFFObjectFile::export_directory_begin() const {
+ return export_directory_iterator(
+ ExportDirectoryEntryRef(ExportDirectory, 0, this));
+}
+
+export_directory_iterator COFFObjectFile::export_directory_end() const {
+ if (ExportDirectory == 0)
+ return export_directory_iterator(ExportDirectoryEntryRef(0, 0, this));
+ ExportDirectoryEntryRef Ref(ExportDirectory,
+ ExportDirectory->AddressTableEntries, this);
+ return export_directory_iterator(Ref);
+}
+
+section_iterator COFFObjectFile::section_begin() const {
+ DataRefImpl Ret;
+ Ret.p = reinterpret_cast<uintptr_t>(SectionTable);
+ return section_iterator(SectionRef(Ret, this));
+}
+
+section_iterator COFFObjectFile::section_end() const {
+ DataRefImpl Ret;
+ int NumSections = COFFHeader->isImportLibrary()
+ ? 0 : COFFHeader->NumberOfSections;
+ Ret.p = reinterpret_cast<uintptr_t>(SectionTable + NumSections);
+ return section_iterator(SectionRef(Ret, this));
}
uint8_t COFFObjectFile::getBytesInAddress() const {
}
StringRef COFFObjectFile::getFileFormatName() const {
- switch(Header->Machine) {
+ switch(COFFHeader->Machine) {
case COFF::IMAGE_FILE_MACHINE_I386:
return "COFF-i386";
case COFF::IMAGE_FILE_MACHINE_AMD64:
return "COFF-x86-64";
+ case COFF::IMAGE_FILE_MACHINE_ARMNT:
+ return "COFF-ARM";
default:
return "COFF-<unknown arch>";
}
}
unsigned COFFObjectFile::getArch() const {
- switch(Header->Machine) {
+ switch(COFFHeader->Machine) {
case COFF::IMAGE_FILE_MACHINE_I386:
return Triple::x86;
case COFF::IMAGE_FILE_MACHINE_AMD64:
return Triple::x86_64;
+ case COFF::IMAGE_FILE_MACHINE_ARMNT:
+ return Triple::thumb;
default:
return Triple::UnknownArch;
}
}
-const coff_section *COFFObjectFile::getSection(std::size_t index) const {
- if (index > 0 && index <= Header->NumberOfSections)
- return SectionTable + (index - 1);
- return 0;
+// This method is kept here because lld uses this. As soon as we make
+// lld to use getCOFFHeader, this method will be removed.
+error_code COFFObjectFile::getHeader(const coff_file_header *&Res) const {
+ return getCOFFHeader(Res);
+}
+
+error_code COFFObjectFile::getCOFFHeader(const coff_file_header *&Res) const {
+ Res = COFFHeader;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::getPE32Header(const pe32_header *&Res) const {
+ Res = PE32Header;
+ return object_error::success;
+}
+
+error_code
+COFFObjectFile::getPE32PlusHeader(const pe32plus_header *&Res) const {
+ Res = PE32PlusHeader;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::getDataDirectory(uint32_t Index,
+ const data_directory *&Res) const {
+ // Error if if there's no data directory or the index is out of range.
+ if (!DataDirectory)
+ return object_error::parse_failed;
+ assert(PE32Header || PE32PlusHeader);
+ uint32_t NumEnt = PE32Header ? PE32Header->NumberOfRvaAndSize
+ : PE32PlusHeader->NumberOfRvaAndSize;
+ if (Index > NumEnt)
+ return object_error::parse_failed;
+ Res = &DataDirectory[Index];
+ return object_error::success;
+}
+
+error_code COFFObjectFile::getSection(int32_t Index,
+ const coff_section *&Result) const {
+ // Check for special index values.
+ if (Index == COFF::IMAGE_SYM_UNDEFINED ||
+ Index == COFF::IMAGE_SYM_ABSOLUTE ||
+ Index == COFF::IMAGE_SYM_DEBUG)
+ Result = NULL;
+ else if (Index > 0 && Index <= COFFHeader->NumberOfSections)
+ // We already verified the section table data, so no need to check again.
+ Result = SectionTable + (Index - 1);
+ else
+ return object_error::parse_failed;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::getString(uint32_t Offset,
+ StringRef &Result) const {
+ if (StringTableSize <= 4)
+ // Tried to get a string from an empty string table.
+ return object_error::parse_failed;
+ if (Offset >= StringTableSize)
+ return object_error::unexpected_eof;
+ Result = StringRef(StringTable + Offset);
+ return object_error::success;
+}
+
+error_code COFFObjectFile::getSymbol(uint32_t Index,
+ const coff_symbol *&Result) const {
+ if (Index < COFFHeader->NumberOfSymbols)
+ Result = SymbolTable + Index;
+ else
+ return object_error::parse_failed;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::getSymbolName(const coff_symbol *Symbol,
+ StringRef &Res) const {
+ // Check for string table entry. First 4 bytes are 0.
+ if (Symbol->Name.Offset.Zeroes == 0) {
+ uint32_t Offset = Symbol->Name.Offset.Offset;
+ if (error_code EC = getString(Offset, Res))
+ return EC;
+ return object_error::success;
+ }
+
+ if (Symbol->Name.ShortName[7] == 0)
+ // Null terminated, let ::strlen figure out the length.
+ Res = StringRef(Symbol->Name.ShortName);
+ else
+ // Not null terminated, use all 8 bytes.
+ Res = StringRef(Symbol->Name.ShortName, 8);
+ return object_error::success;
+}
+
+ArrayRef<uint8_t> COFFObjectFile::getSymbolAuxData(
+ const coff_symbol *Symbol) const {
+ const uint8_t *Aux = NULL;
+
+ if (Symbol->NumberOfAuxSymbols > 0) {
+ // AUX data comes immediately after the symbol in COFF
+ Aux = reinterpret_cast<const uint8_t *>(Symbol + 1);
+# ifndef NDEBUG
+ // Verify that the Aux symbol points to a valid entry in the symbol table.
+ uintptr_t Offset = uintptr_t(Aux) - uintptr_t(base());
+ if (Offset < COFFHeader->PointerToSymbolTable
+ || Offset >= COFFHeader->PointerToSymbolTable
+ + (COFFHeader->NumberOfSymbols * sizeof(coff_symbol)))
+ report_fatal_error("Aux Symbol data was outside of symbol table.");
+
+ assert((Offset - COFFHeader->PointerToSymbolTable) % sizeof(coff_symbol)
+ == 0 && "Aux Symbol data did not point to the beginning of a symbol");
+# endif
+ }
+ return ArrayRef<uint8_t>(Aux,
+ Symbol->NumberOfAuxSymbols * sizeof(coff_symbol));
+}
+
+error_code COFFObjectFile::getSectionName(const coff_section *Sec,
+ StringRef &Res) const {
+ StringRef Name;
+ if (Sec->Name[7] == 0)
+ // Null terminated, let ::strlen figure out the length.
+ Name = Sec->Name;
+ else
+ // Not null terminated, use all 8 bytes.
+ Name = StringRef(Sec->Name, 8);
+
+ // Check for string table entry. First byte is '/'.
+ if (Name[0] == '/') {
+ uint32_t Offset;
+ if (Name[1] == '/') {
+ if (decodeBase64StringEntry(Name.substr(2), Offset))
+ return object_error::parse_failed;
+ } else {
+ if (Name.substr(1).getAsInteger(10, Offset))
+ return object_error::parse_failed;
+ }
+ if (error_code EC = getString(Offset, Name))
+ return EC;
+ }
+
+ Res = Name;
+ return object_error::success;
+}
+
+error_code COFFObjectFile::getSectionContents(const coff_section *Sec,
+ ArrayRef<uint8_t> &Res) const {
+ // The only thing that we need to verify is that the contents is contained
+ // within the file bounds. We don't need to make sure it doesn't cover other
+ // data, as there's nothing that says that is not allowed.
+ uintptr_t ConStart = uintptr_t(base()) + Sec->PointerToRawData;
+ uintptr_t ConEnd = ConStart + Sec->SizeOfRawData;
+ if (ConEnd > uintptr_t(Data->getBufferEnd()))
+ return object_error::parse_failed;
+ Res = ArrayRef<uint8_t>(reinterpret_cast<const unsigned char*>(ConStart),
+ Sec->SizeOfRawData);
+ return object_error::success;
+}
+
+const coff_relocation *COFFObjectFile::toRel(DataRefImpl Rel) const {
+ return reinterpret_cast<const coff_relocation*>(Rel.p);
+}
+
+void COFFObjectFile::moveRelocationNext(DataRefImpl &Rel) const {
+ Rel.p = reinterpret_cast<uintptr_t>(
+ reinterpret_cast<const coff_relocation*>(Rel.p) + 1);
+}
+
+error_code COFFObjectFile::getRelocationAddress(DataRefImpl Rel,
+ uint64_t &Res) const {
+ report_fatal_error("getRelocationAddress not implemented in COFFObjectFile");
+}
+
+error_code COFFObjectFile::getRelocationOffset(DataRefImpl Rel,
+ uint64_t &Res) const {
+ Res = toRel(Rel)->VirtualAddress;
+ return object_error::success;
+}
+
+symbol_iterator COFFObjectFile::getRelocationSymbol(DataRefImpl Rel) const {
+ const coff_relocation* R = toRel(Rel);
+ DataRefImpl Ref;
+ Ref.p = reinterpret_cast<uintptr_t>(SymbolTable + R->SymbolTableIndex);
+ return symbol_iterator(SymbolRef(Ref, this));
+}
+
+error_code COFFObjectFile::getRelocationType(DataRefImpl Rel,
+ uint64_t &Res) const {
+ const coff_relocation* R = toRel(Rel);
+ Res = R->Type;
+ return object_error::success;
+}
+
+const coff_section *
+COFFObjectFile::getCOFFSection(const SectionRef &Section) const {
+ return toSec(Section.getRawDataRefImpl());
+}
+
+const coff_symbol *
+COFFObjectFile::getCOFFSymbol(const SymbolRef &Symbol) const {
+ return toSymb(Symbol.getRawDataRefImpl());
+}
+
+const coff_relocation *
+COFFObjectFile::getCOFFRelocation(const RelocationRef &Reloc) const {
+ return toRel(Reloc.getRawDataRefImpl());
+}
+
+#define LLVM_COFF_SWITCH_RELOC_TYPE_NAME(reloc_type) \
+ case COFF::reloc_type: \
+ Res = #reloc_type; \
+ break;
+
+error_code COFFObjectFile::getRelocationTypeName(DataRefImpl Rel,
+ SmallVectorImpl<char> &Result) const {
+ const coff_relocation *Reloc = toRel(Rel);
+ StringRef Res;
+ switch (COFFHeader->Machine) {
+ case COFF::IMAGE_FILE_MACHINE_AMD64:
+ switch (Reloc->Type) {
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ABSOLUTE);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ADDR64);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ADDR32);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ADDR32NB);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_1);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_2);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_3);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_4);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_5);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SECTION);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SECREL);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SECREL7);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_TOKEN);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SREL32);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_PAIR);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SSPAN32);
+ default:
+ Res = "Unknown";
+ }
+ break;
+ case COFF::IMAGE_FILE_MACHINE_I386:
+ switch (Reloc->Type) {
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_ABSOLUTE);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_DIR16);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_REL16);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_DIR32);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_DIR32NB);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SEG12);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SECTION);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SECREL);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_TOKEN);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SECREL7);
+ LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_REL32);
+ default:
+ Res = "Unknown";
+ }
+ break;
+ default:
+ Res = "Unknown";
+ }
+ Result.append(Res.begin(), Res.end());
+ return object_error::success;
+}
+
+#undef LLVM_COFF_SWITCH_RELOC_TYPE_NAME
+
+error_code COFFObjectFile::getRelocationValueString(DataRefImpl Rel,
+ SmallVectorImpl<char> &Result) const {
+ const coff_relocation *Reloc = toRel(Rel);
+ const coff_symbol *Symb = 0;
+ if (error_code EC = getSymbol(Reloc->SymbolTableIndex, Symb)) return EC;
+ DataRefImpl Sym;
+ Sym.p = reinterpret_cast<uintptr_t>(Symb);
+ StringRef SymName;
+ if (error_code EC = getSymbolName(Sym, SymName)) return EC;
+ Result.append(SymName.begin(), SymName.end());
+ return object_error::success;
+}
+
+error_code COFFObjectFile::getLibraryNext(DataRefImpl LibData,
+ LibraryRef &Result) const {
+ report_fatal_error("getLibraryNext not implemented in COFFObjectFile");
+}
+
+error_code COFFObjectFile::getLibraryPath(DataRefImpl LibData,
+ StringRef &Result) const {
+ report_fatal_error("getLibraryPath not implemented in COFFObjectFile");
+}
+
+bool ImportDirectoryEntryRef::
+operator==(const ImportDirectoryEntryRef &Other) const {
+ return ImportTable == Other.ImportTable && Index == Other.Index;
}
-const char *COFFObjectFile::getString(std::size_t offset) const {
- const ulittle32_t *StringTableSize =
- reinterpret_cast<const ulittle32_t *>(StringTable);
- if (offset < *StringTableSize)
- return StringTable + offset;
- return 0;
+void ImportDirectoryEntryRef::moveNext() {
+ ++Index;
}
-namespace llvm {
+error_code ImportDirectoryEntryRef::
+getImportTableEntry(const import_directory_table_entry *&Result) const {
+ Result = ImportTable;
+ return object_error::success;
+}
+
+error_code ImportDirectoryEntryRef::getName(StringRef &Result) const {
+ uintptr_t IntPtr = 0;
+ if (error_code EC = OwningObject->getRvaPtr(ImportTable->NameRVA, IntPtr))
+ return EC;
+ Result = StringRef(reinterpret_cast<const char *>(IntPtr));
+ return object_error::success;
+}
+
+error_code ImportDirectoryEntryRef::getImportLookupEntry(
+ const import_lookup_table_entry32 *&Result) const {
+ uintptr_t IntPtr = 0;
+ if (error_code EC =
+ OwningObject->getRvaPtr(ImportTable->ImportLookupTableRVA, IntPtr))
+ return EC;
+ Result = reinterpret_cast<const import_lookup_table_entry32 *>(IntPtr);
+ return object_error::success;
+}
+
+bool ExportDirectoryEntryRef::
+operator==(const ExportDirectoryEntryRef &Other) const {
+ return ExportTable == Other.ExportTable && Index == Other.Index;
+}
- ObjectFile *ObjectFile::createCOFFObjectFile(MemoryBuffer *Object) {
- error_code ec;
- return new COFFObjectFile(Object, ec);
+void ExportDirectoryEntryRef::moveNext() {
+ ++Index;
+}
+
+// Returns the name of the current export symbol. If the symbol is exported only
+// by ordinal, the empty string is set as a result.
+error_code ExportDirectoryEntryRef::getDllName(StringRef &Result) const {
+ uintptr_t IntPtr = 0;
+ if (error_code EC = OwningObject->getRvaPtr(ExportTable->NameRVA, IntPtr))
+ return EC;
+ Result = StringRef(reinterpret_cast<const char *>(IntPtr));
+ return object_error::success;
+}
+
+// Returns the starting ordinal number.
+error_code ExportDirectoryEntryRef::getOrdinalBase(uint32_t &Result) const {
+ Result = ExportTable->OrdinalBase;
+ return object_error::success;
+}
+
+// Returns the export ordinal of the current export symbol.
+error_code ExportDirectoryEntryRef::getOrdinal(uint32_t &Result) const {
+ Result = ExportTable->OrdinalBase + Index;
+ return object_error::success;
+}
+
+// Returns the address of the current export symbol.
+error_code ExportDirectoryEntryRef::getExportRVA(uint32_t &Result) const {
+ uintptr_t IntPtr = 0;
+ if (error_code EC = OwningObject->getRvaPtr(
+ ExportTable->ExportAddressTableRVA, IntPtr))
+ return EC;
+ const export_address_table_entry *entry =
+ reinterpret_cast<const export_address_table_entry *>(IntPtr);
+ Result = entry[Index].ExportRVA;
+ return object_error::success;
+}
+
+// Returns the name of the current export symbol. If the symbol is exported only
+// by ordinal, the empty string is set as a result.
+error_code ExportDirectoryEntryRef::getSymbolName(StringRef &Result) const {
+ uintptr_t IntPtr = 0;
+ if (error_code EC = OwningObject->getRvaPtr(
+ ExportTable->OrdinalTableRVA, IntPtr))
+ return EC;
+ const ulittle16_t *Start = reinterpret_cast<const ulittle16_t *>(IntPtr);
+
+ uint32_t NumEntries = ExportTable->NumberOfNamePointers;
+ int Offset = 0;
+ for (const ulittle16_t *I = Start, *E = Start + NumEntries;
+ I < E; ++I, ++Offset) {
+ if (*I != Index)
+ continue;
+ if (error_code EC = OwningObject->getRvaPtr(
+ ExportTable->NamePointerRVA, IntPtr))
+ return EC;
+ const ulittle32_t *NamePtr = reinterpret_cast<const ulittle32_t *>(IntPtr);
+ if (error_code EC = OwningObject->getRvaPtr(NamePtr[Offset], IntPtr))
+ return EC;
+ Result = StringRef(reinterpret_cast<const char *>(IntPtr));
+ return object_error::success;
}
+ Result = "";
+ return object_error::success;
+}
-} // end namespace llvm
+ErrorOr<ObjectFile *> ObjectFile::createCOFFObjectFile(MemoryBuffer *Object,
+ bool BufferOwned) {
+ error_code EC;
+ std::unique_ptr<COFFObjectFile> Ret(
+ new COFFObjectFile(Object, EC, BufferOwned));
+ if (EC)
+ return EC;
+ return Ret.release();
+}
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