using namespace object;
namespace llvm {
+using std::error_code;
+
namespace object {
struct nlist_base {
SwapValue(C.reserved);
}
+template<>
+void SwapStruct(MachO::dylib_command&C) {
+ SwapValue(C.cmd);
+ SwapValue(C.cmdsize);
+ SwapValue(C.dylib.name);
+ SwapValue(C.dylib.timestamp);
+ SwapValue(C.dylib.current_version);
+ SwapValue(C.dylib.compatibility_version);
+}
+
template<>
void SwapStruct(MachO::data_in_code_entry &C) {
SwapValue(C.offset);
uint32_t Val = O->getPlainRelocationSymbolNum(RE);
for (const SymbolRef &Symbol : O->symbols()) {
- error_code ec;
+ std::error_code ec;
uint64_t Addr;
StringRef Name;
// If we couldn't find a symbol that this relocation refers to, try
// to find a section beginning instead.
for (const SectionRef &Section : O->sections()) {
- error_code ec;
+ std::error_code ec;
uint64_t Addr;
StringRef Name;
}
MachOObjectFile::MachOObjectFile(MemoryBuffer *Object, bool IsLittleEndian,
- bool Is64bits, error_code &EC,
+ bool Is64bits, std::error_code &EC,
bool BufferOwned)
: ObjectFile(getMachOType(IsLittleEndian, Is64bits), Object, BufferOwned),
- SymtabLoadCmd(NULL), DysymtabLoadCmd(NULL), DataInCodeLoadCmd(NULL) {
+ SymtabLoadCmd(nullptr), DysymtabLoadCmd(nullptr),
+ DataInCodeLoadCmd(nullptr) {
uint32_t LoadCommandCount = this->getHeader().ncmds;
MachO::LoadCommandType SegmentLoadType = is64Bit() ?
MachO::LC_SEGMENT_64 : MachO::LC_SEGMENT;
const char *Sec = getSectionPtr(this, Load, J);
Sections.push_back(Sec);
}
+ } else if (Load.C.cmd == MachO::LC_LOAD_DYLIB ||
+ Load.C.cmd == MachO::LC_LOAD_WEAK_DYLIB ||
+ Load.C.cmd == MachO::LC_LAZY_LOAD_DYLIB ||
+ Load.C.cmd == MachO::LC_REEXPORT_DYLIB ||
+ Load.C.cmd == MachO::LC_LOAD_UPWARD_DYLIB) {
+ Libraries.push_back(Load.Ptr);
}
if (I == LoadCommandCount - 1)
Symb.p += SymbolTableEntrySize;
}
-error_code MachOObjectFile::getSymbolName(DataRefImpl Symb,
- StringRef &Res) const {
+std::error_code MachOObjectFile::getSymbolName(DataRefImpl Symb,
+ StringRef &Res) const {
StringRef StringTable = getStringTableData();
nlist_base Entry = getSymbolTableEntryBase(this, Symb);
const char *Start = &StringTable.data()[Entry.n_strx];
return object_error::success;
}
-error_code MachOObjectFile::getSymbolAddress(DataRefImpl Symb,
- uint64_t &Res) const {
+// getIndirectName() returns the name of the alias'ed symbol who's string table
+// index is in the n_value field.
+std::error_code MachOObjectFile::getIndirectName(DataRefImpl Symb,
+ StringRef &Res) const {
+ StringRef StringTable = getStringTableData();
+ uint64_t NValue;
if (is64Bit()) {
MachO::nlist_64 Entry = getSymbol64TableEntry(Symb);
- Res = Entry.n_value;
+ NValue = Entry.n_value;
+ if ((Entry.n_type & MachO::N_TYPE) != MachO::N_INDR)
+ return object_error::parse_failed;
} else {
MachO::nlist Entry = getSymbolTableEntry(Symb);
- Res = Entry.n_value;
+ NValue = Entry.n_value;
+ if ((Entry.n_type & MachO::N_TYPE) != MachO::N_INDR)
+ return object_error::parse_failed;
}
+ if (NValue >= StringTable.size())
+ return object_error::parse_failed;
+ const char *Start = &StringTable.data()[NValue];
+ Res = StringRef(Start);
return object_error::success;
}
-error_code
-MachOObjectFile::getSymbolFileOffset(DataRefImpl Symb,
- uint64_t &Res) const {
- nlist_base Entry = getSymbolTableEntryBase(this, Symb);
- getSymbolAddress(Symb, Res);
- if (Entry.n_sect) {
- uint64_t Delta;
- DataRefImpl SecRel;
- SecRel.d.a = Entry.n_sect-1;
- if (is64Bit()) {
- MachO::section_64 Sec = getSection64(SecRel);
- Delta = Sec.offset - Sec.addr;
- } else {
- MachO::section Sec = getSection(SecRel);
- Delta = Sec.offset - Sec.addr;
- }
-
- Res += Delta;
+std::error_code MachOObjectFile::getSymbolAddress(DataRefImpl Symb,
+ uint64_t &Res) const {
+ if (is64Bit()) {
+ MachO::nlist_64 Entry = getSymbol64TableEntry(Symb);
+ if ((Entry.n_type & MachO::N_TYPE) == MachO::N_UNDF &&
+ Entry.n_value == 0)
+ Res = UnknownAddressOrSize;
+ else
+ Res = Entry.n_value;
+ } else {
+ MachO::nlist Entry = getSymbolTableEntry(Symb);
+ if ((Entry.n_type & MachO::N_TYPE) == MachO::N_UNDF &&
+ Entry.n_value == 0)
+ Res = UnknownAddressOrSize;
+ else
+ Res = Entry.n_value;
}
-
return object_error::success;
}
-error_code MachOObjectFile::getSymbolAlignment(DataRefImpl DRI,
- uint32_t &Result) const {
+std::error_code MachOObjectFile::getSymbolAlignment(DataRefImpl DRI,
+ uint32_t &Result) const {
uint32_t flags = getSymbolFlags(DRI);
if (flags & SymbolRef::SF_Common) {
nlist_base Entry = getSymbolTableEntryBase(this, DRI);
return object_error::success;
}
-error_code MachOObjectFile::getSymbolSize(DataRefImpl DRI,
- uint64_t &Result) const {
+std::error_code MachOObjectFile::getSymbolSize(DataRefImpl DRI,
+ uint64_t &Result) const {
uint64_t BeginOffset;
uint64_t EndOffset = 0;
uint8_t SectionIndex;
nlist_base Entry = getSymbolTableEntryBase(this, DRI);
uint64_t Value;
getSymbolAddress(DRI, Value);
+ if (Value == UnknownAddressOrSize) {
+ Result = UnknownAddressOrSize;
+ return object_error::success;
+ }
BeginOffset = Value;
DataRefImpl DRI = Symbol.getRawDataRefImpl();
Entry = getSymbolTableEntryBase(this, DRI);
getSymbolAddress(DRI, Value);
+ if (Value == UnknownAddressOrSize)
+ continue;
if (Entry.n_sect == SectionIndex && Value > BeginOffset)
if (!EndOffset || Value < EndOffset)
EndOffset = Value;
return object_error::success;
}
-error_code MachOObjectFile::getSymbolType(DataRefImpl Symb,
- SymbolRef::Type &Res) const {
+std::error_code MachOObjectFile::getSymbolType(DataRefImpl Symb,
+ SymbolRef::Type &Res) const {
nlist_base Entry = getSymbolTableEntryBase(this, Symb);
uint8_t n_type = Entry.n_type;
if ((MachOType & MachO::N_TYPE) == MachO::N_UNDF)
Result |= SymbolRef::SF_Undefined;
+ if ((MachOType & MachO::N_TYPE) == MachO::N_INDR)
+ Result |= SymbolRef::SF_Indirect;
+
if (MachOType & MachO::N_STAB)
Result |= SymbolRef::SF_FormatSpecific;
if ((MachOType & MachO::N_TYPE) == MachO::N_UNDF) {
uint64_t Value;
getSymbolAddress(DRI, Value);
- if (Value)
+ if (Value && Value != UnknownAddressOrSize)
Result |= SymbolRef::SF_Common;
}
}
return Result;
}
-error_code
-MachOObjectFile::getSymbolSection(DataRefImpl Symb,
- section_iterator &Res) const {
+std::error_code MachOObjectFile::getSymbolSection(DataRefImpl Symb,
+ section_iterator &Res) const {
nlist_base Entry = getSymbolTableEntryBase(this, Symb);
uint8_t index = Entry.n_sect;
return object_error::success;
}
-error_code MachOObjectFile::getSymbolValue(DataRefImpl Symb,
- uint64_t &Val) const {
- report_fatal_error("getSymbolValue unimplemented in MachOObjectFile");
-}
-
void MachOObjectFile::moveSectionNext(DataRefImpl &Sec) const {
Sec.d.a++;
}
-error_code
-MachOObjectFile::getSectionName(DataRefImpl Sec, StringRef &Result) const {
+std::error_code MachOObjectFile::getSectionName(DataRefImpl Sec,
+ StringRef &Result) const {
ArrayRef<char> Raw = getSectionRawName(Sec);
Result = parseSegmentOrSectionName(Raw.data());
return object_error::success;
}
-error_code
-MachOObjectFile::getSectionAddress(DataRefImpl Sec, uint64_t &Res) const {
+std::error_code MachOObjectFile::getSectionAddress(DataRefImpl Sec,
+ uint64_t &Res) const {
if (is64Bit()) {
MachO::section_64 Sect = getSection64(Sec);
Res = Sect.addr;
return object_error::success;
}
-error_code
-MachOObjectFile::getSectionSize(DataRefImpl Sec, uint64_t &Res) const {
+std::error_code MachOObjectFile::getSectionSize(DataRefImpl Sec,
+ uint64_t &Res) const {
if (is64Bit()) {
MachO::section_64 Sect = getSection64(Sec);
Res = Sect.size;
return object_error::success;
}
-error_code
-MachOObjectFile::getSectionContents(DataRefImpl Sec, StringRef &Res) const {
+std::error_code MachOObjectFile::getSectionContents(DataRefImpl Sec,
+ StringRef &Res) const {
uint32_t Offset;
uint64_t Size;
return object_error::success;
}
-error_code
-MachOObjectFile::getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const {
+std::error_code MachOObjectFile::getSectionAlignment(DataRefImpl Sec,
+ uint64_t &Res) const {
uint32_t Align;
if (is64Bit()) {
MachO::section_64 Sect = getSection64(Sec);
return object_error::success;
}
-error_code
-MachOObjectFile::isSectionText(DataRefImpl Sec, bool &Res) const {
+std::error_code MachOObjectFile::isSectionText(DataRefImpl Sec,
+ bool &Res) const {
uint32_t Flags = getSectionFlags(this, Sec);
Res = Flags & MachO::S_ATTR_PURE_INSTRUCTIONS;
return object_error::success;
}
-error_code MachOObjectFile::isSectionData(DataRefImpl DRI, bool &Result) const {
- // FIXME: Unimplemented.
- Result = false;
+std::error_code MachOObjectFile::isSectionData(DataRefImpl Sec,
+ bool &Result) const {
+ uint32_t Flags = getSectionFlags(this, Sec);
+ unsigned SectionType = Flags & MachO::SECTION_TYPE;
+ Result = !(Flags & MachO::S_ATTR_PURE_INSTRUCTIONS) &&
+ !(SectionType == MachO::S_ZEROFILL ||
+ SectionType == MachO::S_GB_ZEROFILL);
return object_error::success;
}
-error_code MachOObjectFile::isSectionBSS(DataRefImpl DRI, bool &Result) const {
- // FIXME: Unimplemented.
- Result = false;
+std::error_code MachOObjectFile::isSectionBSS(DataRefImpl Sec,
+ bool &Result) const {
+ uint32_t Flags = getSectionFlags(this, Sec);
+ unsigned SectionType = Flags & MachO::SECTION_TYPE;
+ Result = !(Flags & MachO::S_ATTR_PURE_INSTRUCTIONS) &&
+ (SectionType == MachO::S_ZEROFILL ||
+ SectionType == MachO::S_GB_ZEROFILL);
return object_error::success;
}
-error_code
+std::error_code
MachOObjectFile::isSectionRequiredForExecution(DataRefImpl Sec,
bool &Result) const {
// FIXME: Unimplemented.
return object_error::success;
}
-error_code MachOObjectFile::isSectionVirtual(DataRefImpl Sec,
- bool &Result) const {
+std::error_code MachOObjectFile::isSectionVirtual(DataRefImpl Sec,
+ bool &Result) const {
// FIXME: Unimplemented.
Result = false;
return object_error::success;
}
-error_code
-MachOObjectFile::isSectionZeroInit(DataRefImpl Sec, bool &Res) const {
+std::error_code MachOObjectFile::isSectionZeroInit(DataRefImpl Sec,
+ bool &Res) const {
uint32_t Flags = getSectionFlags(this, Sec);
unsigned SectionType = Flags & MachO::SECTION_TYPE;
Res = SectionType == MachO::S_ZEROFILL ||
return object_error::success;
}
-error_code MachOObjectFile::isSectionReadOnlyData(DataRefImpl Sec,
- bool &Result) const {
+std::error_code MachOObjectFile::isSectionReadOnlyData(DataRefImpl Sec,
+ bool &Result) const {
// Consider using the code from isSectionText to look for __const sections.
// Alternately, emit S_ATTR_PURE_INSTRUCTIONS and/or S_ATTR_SOME_INSTRUCTIONS
// to use section attributes to distinguish code from data.
return object_error::success;
}
-error_code
-MachOObjectFile::sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
- bool &Result) const {
+std::error_code MachOObjectFile::sectionContainsSymbol(DataRefImpl Sec,
+ DataRefImpl Symb,
+ bool &Result) const {
SymbolRef::Type ST;
this->getSymbolType(Symb, ST);
if (ST == SymbolRef::ST_Unknown) {
}
relocation_iterator MachOObjectFile::section_rel_begin(DataRefImpl Sec) const {
- uint32_t Offset;
- if (is64Bit()) {
- MachO::section_64 Sect = getSection64(Sec);
- Offset = Sect.reloff;
- } else {
- MachO::section Sect = getSection(Sec);
- Offset = Sect.reloff;
- }
-
DataRefImpl Ret;
- Ret.p = reinterpret_cast<uintptr_t>(getPtr(this, Offset));
+ Ret.d.a = Sec.d.a;
+ Ret.d.b = 0;
return relocation_iterator(RelocationRef(Ret, this));
}
relocation_iterator
MachOObjectFile::section_rel_end(DataRefImpl Sec) const {
- uint32_t Offset;
uint32_t Num;
if (is64Bit()) {
MachO::section_64 Sect = getSection64(Sec);
- Offset = Sect.reloff;
Num = Sect.nreloc;
} else {
MachO::section Sect = getSection(Sec);
- Offset = Sect.reloff;
Num = Sect.nreloc;
}
- const MachO::any_relocation_info *P =
- reinterpret_cast<const MachO::any_relocation_info *>(getPtr(this, Offset));
-
DataRefImpl Ret;
- Ret.p = reinterpret_cast<uintptr_t>(P + Num);
+ Ret.d.a = Sec.d.a;
+ Ret.d.b = Num;
return relocation_iterator(RelocationRef(Ret, this));
}
-bool MachOObjectFile::section_rel_empty(DataRefImpl Sec) const {
- if (is64Bit()) {
- MachO::section_64 Sect = getSection64(Sec);
- return Sect.nreloc == 0;
- } else {
- MachO::section Sect = getSection(Sec);
- return Sect.nreloc == 0;
- }
-}
-
void MachOObjectFile::moveRelocationNext(DataRefImpl &Rel) const {
- const MachO::any_relocation_info *P =
- reinterpret_cast<const MachO::any_relocation_info *>(Rel.p);
- Rel.p = reinterpret_cast<uintptr_t>(P + 1);
+ ++Rel.d.b;
}
-error_code
-MachOObjectFile::getRelocationAddress(DataRefImpl Rel, uint64_t &Res) const {
- report_fatal_error("getRelocationAddress not implemented in MachOObjectFile");
+std::error_code MachOObjectFile::getRelocationAddress(DataRefImpl Rel,
+ uint64_t &Res) const {
+ uint64_t Offset;
+ getRelocationOffset(Rel, Offset);
+
+ DataRefImpl Sec;
+ Sec.d.a = Rel.d.a;
+ uint64_t SecAddress;
+ getSectionAddress(Sec, SecAddress);
+ Res = SecAddress + Offset;
+ return object_error::success;
}
-error_code MachOObjectFile::getRelocationOffset(DataRefImpl Rel,
- uint64_t &Res) const {
+std::error_code MachOObjectFile::getRelocationOffset(DataRefImpl Rel,
+ uint64_t &Res) const {
+ assert(getHeader().filetype == MachO::MH_OBJECT &&
+ "Only implemented for MH_OBJECT");
MachO::any_relocation_info RE = getRelocation(Rel);
Res = getAnyRelocationAddress(RE);
return object_error::success;
return symbol_iterator(SymbolRef(Sym, this));
}
-error_code MachOObjectFile::getRelocationType(DataRefImpl Rel,
- uint64_t &Res) const {
+std::error_code MachOObjectFile::getRelocationType(DataRefImpl Rel,
+ uint64_t &Res) const {
MachO::any_relocation_info RE = getRelocation(Rel);
Res = getAnyRelocationType(RE);
return object_error::success;
}
-error_code
+std::error_code
MachOObjectFile::getRelocationTypeName(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const {
StringRef res;
return object_error::success;
}
-error_code
+std::error_code
MachOObjectFile::getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const {
MachO::any_relocation_info RE = getRelocation(Rel);
}
case MachO::X86_64_RELOC_SUBTRACTOR: {
DataRefImpl RelNext = Rel;
- RelNext.d.a++;
+ moveRelocationNext(RelNext);
MachO::any_relocation_info RENext = getRelocation(RelNext);
// X86_64_RELOC_SUBTRACTOR must be followed by a relocation of type
return object_error::success;
case MachO::GENERIC_RELOC_SECTDIFF: {
DataRefImpl RelNext = Rel;
- RelNext.d.a++;
+ moveRelocationNext(RelNext);
MachO::any_relocation_info RENext = getRelocation(RelNext);
// X86 sect diff's must be followed by a relocation of type
switch (Type) {
case MachO::GENERIC_RELOC_LOCAL_SECTDIFF: {
DataRefImpl RelNext = Rel;
- RelNext.d.a++;
+ moveRelocationNext(RelNext);
MachO::any_relocation_info RENext = getRelocation(RelNext);
// X86 sect diff's must be followed by a relocation of type
printRelocationTargetName(this, RE, fmt);
DataRefImpl RelNext = Rel;
- RelNext.d.a++;
+ moveRelocationNext(RelNext);
MachO::any_relocation_info RENext = getRelocation(RelNext);
// ARM half relocs must be followed by a relocation of type
return object_error::success;
}
-error_code
-MachOObjectFile::getRelocationHidden(DataRefImpl Rel, bool &Result) const {
+std::error_code MachOObjectFile::getRelocationHidden(DataRefImpl Rel,
+ bool &Result) const {
unsigned Arch = getArch();
uint64_t Type;
getRelocationType(Rel, Type);
return object_error::success;
}
-error_code MachOObjectFile::getLibraryNext(DataRefImpl LibData,
- LibraryRef &Res) const {
+std::error_code MachOObjectFile::getLibraryNext(DataRefImpl LibData,
+ LibraryRef &Res) const {
report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
}
-error_code MachOObjectFile::getLibraryPath(DataRefImpl LibData,
- StringRef &Res) const {
+std::error_code MachOObjectFile::getLibraryPath(DataRefImpl LibData,
+ StringRef &Res) const {
report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
}
-basic_symbol_iterator MachOObjectFile::symbol_begin_impl() const {
- DataRefImpl DRI;
- if (!SymtabLoadCmd)
- return basic_symbol_iterator(SymbolRef(DRI, this));
+//
+// guessLibraryShortName() is passed a name of a dynamic library and returns a
+// guess on what the short name is. Then name is returned as a substring of the
+// StringRef Name passed in. The name of the dynamic library is recognized as
+// a framework if it has one of the two following forms:
+// Foo.framework/Versions/A/Foo
+// Foo.framework/Foo
+// Where A and Foo can be any string. And may contain a trailing suffix
+// starting with an underbar. If the Name is recognized as a framework then
+// isFramework is set to true else it is set to false. If the Name has a
+// suffix then Suffix is set to the substring in Name that contains the suffix
+// else it is set to a NULL StringRef.
+//
+// The Name of the dynamic library is recognized as a library name if it has
+// one of the two following forms:
+// libFoo.A.dylib
+// libFoo.dylib
+// The library may have a suffix trailing the name Foo of the form:
+// libFoo_profile.A.dylib
+// libFoo_profile.dylib
+//
+// The Name of the dynamic library is also recognized as a library name if it
+// has the following form:
+// Foo.qtx
+//
+// If the Name of the dynamic library is none of the forms above then a NULL
+// StringRef is returned.
+//
+StringRef MachOObjectFile::guessLibraryShortName(StringRef Name,
+ bool &isFramework,
+ StringRef &Suffix) {
+ StringRef Foo, F, DotFramework, V, Dylib, Lib, Dot, Qtx;
+ size_t a, b, c, d, Idx;
+
+ isFramework = false;
+ Suffix = StringRef();
+
+ // Pull off the last component and make Foo point to it
+ a = Name.rfind('/');
+ if (a == Name.npos || a == 0)
+ goto guess_library;
+ Foo = Name.slice(a+1, Name.npos);
+
+ // Look for a suffix starting with a '_'
+ Idx = Foo.rfind('_');
+ if (Idx != Foo.npos && Foo.size() >= 2) {
+ Suffix = Foo.slice(Idx, Foo.npos);
+ Foo = Foo.slice(0, Idx);
+ }
- MachO::symtab_command Symtab = getSymtabLoadCommand();
- DRI.p = reinterpret_cast<uintptr_t>(getPtr(this, Symtab.symoff));
- return basic_symbol_iterator(SymbolRef(DRI, this));
+ // First look for the form Foo.framework/Foo
+ b = Name.rfind('/', a);
+ if (b == Name.npos)
+ Idx = 0;
+ else
+ Idx = b+1;
+ F = Name.slice(Idx, Idx + Foo.size());
+ DotFramework = Name.slice(Idx + Foo.size(),
+ Idx + Foo.size() + sizeof(".framework/")-1);
+ if (F == Foo && DotFramework == ".framework/") {
+ isFramework = true;
+ return Foo;
+ }
+
+ // Next look for the form Foo.framework/Versions/A/Foo
+ if (b == Name.npos)
+ goto guess_library;
+ c = Name.rfind('/', b);
+ if (c == Name.npos || c == 0)
+ goto guess_library;
+ V = Name.slice(c+1, Name.npos);
+ if (!V.startswith("Versions/"))
+ goto guess_library;
+ d = Name.rfind('/', c);
+ if (d == Name.npos)
+ Idx = 0;
+ else
+ Idx = d+1;
+ F = Name.slice(Idx, Idx + Foo.size());
+ DotFramework = Name.slice(Idx + Foo.size(),
+ Idx + Foo.size() + sizeof(".framework/")-1);
+ if (F == Foo && DotFramework == ".framework/") {
+ isFramework = true;
+ return Foo;
+ }
+
+guess_library:
+ // pull off the suffix after the "." and make a point to it
+ a = Name.rfind('.');
+ if (a == Name.npos || a == 0)
+ return StringRef();
+ Dylib = Name.slice(a, Name.npos);
+ if (Dylib != ".dylib")
+ goto guess_qtx;
+
+ // First pull off the version letter for the form Foo.A.dylib if any.
+ if (a >= 3) {
+ Dot = Name.slice(a-2, a-1);
+ if (Dot == ".")
+ a = a - 2;
+ }
+
+ b = Name.rfind('/', a);
+ if (b == Name.npos)
+ b = 0;
+ else
+ b = b+1;
+ // ignore any suffix after an underbar like Foo_profile.A.dylib
+ Idx = Name.find('_', b);
+ if (Idx != Name.npos && Idx != b) {
+ Lib = Name.slice(b, Idx);
+ Suffix = Name.slice(Idx, a);
+ }
+ else
+ Lib = Name.slice(b, a);
+ // There are incorrect library names of the form:
+ // libATS.A_profile.dylib so check for these.
+ if (Lib.size() >= 3) {
+ Dot = Lib.slice(Lib.size()-2, Lib.size()-1);
+ if (Dot == ".")
+ Lib = Lib.slice(0, Lib.size()-2);
+ }
+ return Lib;
+
+guess_qtx:
+ Qtx = Name.slice(a, Name.npos);
+ if (Qtx != ".qtx")
+ return StringRef();
+ b = Name.rfind('/', a);
+ if (b == Name.npos)
+ Lib = Name.slice(0, a);
+ else
+ Lib = Name.slice(b+1, a);
+ // There are library names of the form: QT.A.qtx so check for these.
+ if (Lib.size() >= 3) {
+ Dot = Lib.slice(Lib.size()-2, Lib.size()-1);
+ if (Dot == ".")
+ Lib = Lib.slice(0, Lib.size()-2);
+ }
+ return Lib;
+}
+
+// getLibraryShortNameByIndex() is used to get the short name of the library
+// for an undefined symbol in a linked Mach-O binary that was linked with the
+// normal two-level namespace default (that is MH_TWOLEVEL in the header).
+// It is passed the index (0 - based) of the library as translated from
+// GET_LIBRARY_ORDINAL (1 - based).
+std::error_code MachOObjectFile::getLibraryShortNameByIndex(unsigned Index,
+ StringRef &Res) {
+ if (Index >= Libraries.size())
+ return object_error::parse_failed;
+
+ MachO::dylib_command D =
+ getStruct<MachO::dylib_command>(this, Libraries[Index]);
+ if (D.dylib.name >= D.cmdsize)
+ return object_error::parse_failed;
+
+ // If the cache of LibrariesShortNames is not built up do that first for
+ // all the Libraries.
+ if (LibrariesShortNames.size() == 0) {
+ for (unsigned i = 0; i < Libraries.size(); i++) {
+ MachO::dylib_command D =
+ getStruct<MachO::dylib_command>(this, Libraries[i]);
+ if (D.dylib.name >= D.cmdsize) {
+ LibrariesShortNames.push_back(StringRef());
+ continue;
+ }
+ char *P = (char *)(Libraries[i]) + D.dylib.name;
+ StringRef Name = StringRef(P);
+ StringRef Suffix;
+ bool isFramework;
+ StringRef shortName = guessLibraryShortName(Name, isFramework, Suffix);
+ if (shortName == StringRef())
+ LibrariesShortNames.push_back(Name);
+ else
+ LibrariesShortNames.push_back(shortName);
+ }
+ }
+
+ Res = LibrariesShortNames[Index];
+ return object_error::success;
+}
+
+basic_symbol_iterator MachOObjectFile::symbol_begin_impl() const {
+ return getSymbolByIndex(0);
}
basic_symbol_iterator MachOObjectFile::symbol_end_impl() const {
return basic_symbol_iterator(SymbolRef(DRI, this));
}
+basic_symbol_iterator MachOObjectFile::getSymbolByIndex(unsigned Index) const {
+ DataRefImpl DRI;
+ if (!SymtabLoadCmd)
+ return basic_symbol_iterator(SymbolRef(DRI, this));
+
+ MachO::symtab_command Symtab = getSymtabLoadCommand();
+ assert(Index < Symtab.nsyms && "Requested symbol index is out of range.");
+ unsigned SymbolTableEntrySize =
+ is64Bit() ? sizeof(MachO::nlist_64) : sizeof(MachO::nlist);
+ DRI.p = reinterpret_cast<uintptr_t>(getPtr(this, Symtab.symoff));
+ DRI.p += Index * SymbolTableEntrySize;
+ return basic_symbol_iterator(SymbolRef(DRI, this));
+}
+
section_iterator MachOObjectFile::section_begin() const {
DataRefImpl DRI;
return section_iterator(SectionRef(DRI, this));
MachO::any_relocation_info
MachOObjectFile::getRelocation(DataRefImpl Rel) const {
- const char *P = reinterpret_cast<const char *>(Rel.p);
- return getStruct<MachO::any_relocation_info>(this, P);
+ DataRefImpl Sec;
+ Sec.d.a = Rel.d.a;
+ uint32_t Offset;
+ if (is64Bit()) {
+ MachO::section_64 Sect = getSection64(Sec);
+ Offset = Sect.reloff;
+ } else {
+ MachO::section Sect = getSection(Sec);
+ Offset = Sect.reloff;
+ }
+
+ auto P = reinterpret_cast<const MachO::any_relocation_info *>(
+ getPtr(this, Offset)) + Rel.d.b;
+ return getStruct<MachO::any_relocation_info>(
+ this, reinterpret_cast<const char *>(P));
}
MachO::data_in_code_entry
ErrorOr<ObjectFile *> ObjectFile::createMachOObjectFile(MemoryBuffer *Buffer,
bool BufferOwned) {
StringRef Magic = Buffer->getBuffer().slice(0, 4);
- error_code EC;
+ std::error_code EC;
std::unique_ptr<MachOObjectFile> Ret;
if (Magic == "\xFE\xED\xFA\xCE")
Ret.reset(new MachOObjectFile(Buffer, false, false, EC, BufferOwned));
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