#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include <cctype>
+#include <limits>
using namespace llvm;
using namespace object;
return object_error::success;
}
+// 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 (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);
return object_error::success;
}
-error_code COFFObjectFile::getSymbolFlags(DataRefImpl Ref,
- uint32_t &Result) const {
+uint32_t COFFObjectFile::getSymbolFlags(DataRefImpl Ref) const {
const coff_symbol *Symb = toSymb(Ref);
- Result = SymbolRef::SF_None;
+ uint32_t Result = SymbolRef::SF_None;
- // TODO: Correctly set SF_FormatSpecific, SF_ThreadLocal, SF_Common
+ // 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;
+ }
- if (Symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL &&
- Symb->SectionNumber == COFF::IMAGE_SYM_UNDEFINED)
- Result |= SymbolRef::SF_Undefined;
// TODO: This are certainly too restrictive.
if (Symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL)
if (Symb->SectionNumber == COFF::IMAGE_SYM_ABSOLUTE)
Result |= SymbolRef::SF_Absolute;
- return object_error::success;
+ return Result;
}
error_code COFFObjectFile::getSymbolSize(DataRefImpl Ref,
section_iterator &Result) const {
const coff_symbol *Symb = toSymb(Ref);
if (Symb->SectionNumber <= COFF::IMAGE_SYM_UNDEFINED)
- Result = end_sections();
+ Result = section_end();
else {
const coff_section *Sec = 0;
if (error_code EC = getSection(Symb->SectionNumber, Sec)) return 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 ||
- (StringTableSize > 4 && StringTable[StringTableSize - 1] != 0))
+ 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);
+}
+
// Returns the file offset for the given RVA.
-error_code COFFObjectFile::getRvaPtr(uint32_t Rva, uintptr_t &Res) const {
- for (section_iterator I = begin_sections(), E = end_sections(); I != E;
+error_code COFFObjectFile::getRvaPtr(uint32_t Addr, uintptr_t &Res) const {
+ for (section_iterator I = section_begin(), E = section_end(); I != E;
++I) {
const coff_section *Section = getCOFFSection(I);
uint32_t SectionStart = Section->VirtualAddress;
uint32_t SectionEnd = Section->VirtualAddress + Section->VirtualSize;
- if (SectionStart <= Rva && Rva < SectionEnd) {
- uint32_t Offset = Rva - SectionStart;
+ if (SectionStart <= Addr && Addr < SectionEnd) {
+ uint32_t Offset = Addr - SectionStart;
Res = uintptr_t(base()) + Section->PointerToRawData + Offset;
return object_error::success;
}
EC = object_error::success;
}
-symbol_iterator COFFObjectFile::begin_symbols() const {
+basic_symbol_iterator COFFObjectFile::symbol_begin_impl() const {
DataRefImpl Ret;
Ret.p = reinterpret_cast<uintptr_t>(SymbolTable);
- return symbol_iterator(SymbolRef(Ret, this));
+ return basic_symbol_iterator(SymbolRef(Ret, this));
}
-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;
Ret.p = reinterpret_cast<uintptr_t>(StringTable);
- return symbol_iterator(SymbolRef(Ret, this));
+ return basic_symbol_iterator(SymbolRef(Ret, this));
}
-library_iterator COFFObjectFile::begin_libraries_needed() const {
+library_iterator COFFObjectFile::needed_library_begin() const {
// TODO: implement
report_fatal_error("Libraries needed unimplemented in COFFObjectFile");
}
-library_iterator COFFObjectFile::end_libraries_needed() const {
+library_iterator COFFObjectFile::needed_library_end() const {
// TODO: implement
report_fatal_error("Libraries needed unimplemented in COFFObjectFile");
}
return export_directory_iterator(Ref);
}
-section_iterator COFFObjectFile::begin_sections() const {
+section_iterator COFFObjectFile::section_begin() const {
DataRefImpl Ret;
Ret.p = reinterpret_cast<uintptr_t>(SectionTable);
return section_iterator(SectionRef(Ret, this));
}
-section_iterator COFFObjectFile::end_sections() const {
+section_iterator COFFObjectFile::section_end() const {
DataRefImpl Ret;
int NumSections = COFFHeader->isImportLibrary()
? 0 : COFFHeader->NumberOfSections;
// Check for string table entry. First byte is '/'.
if (Name[0] == '/') {
uint32_t Offset;
- if (Name.substr(1).getAsInteger(10, Offset))
- return object_error::parse_failed;
+ 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;
}
return toSymb(It->getRawDataRefImpl());
}
-const coff_relocation *COFFObjectFile::getCOFFRelocation(
- relocation_iterator &It) const {
+const coff_relocation *
+COFFObjectFile::getCOFFRelocation(relocation_iterator &It) const {
return toRel(It->getRawDataRefImpl());
}
ErrorOr<ObjectFile *> ObjectFile::createCOFFObjectFile(MemoryBuffer *Object,
bool BufferOwned) {
error_code EC;
- OwningPtr<COFFObjectFile> Ret(new COFFObjectFile(Object, EC, BufferOwned));
+ std::unique_ptr<COFFObjectFile> Ret(
+ new COFFObjectFile(Object, EC, BufferOwned));
if (EC)
return EC;
- return Ret.take();
+ return Ret.release();
}
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