#include "llvm/Object/MachO.h"
#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Support/DataExtractor.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/Host.h"
+#include "llvm/Support/LEB128.h"
+#include "llvm/Support/MachO.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/raw_ostream.h"
#include <cctype>
using namespace llvm;
using namespace object;
-namespace llvm {
-namespace object {
-
-struct nlist_base {
- uint32_t n_strx;
- uint8_t n_type;
- uint8_t n_sect;
- uint16_t n_desc;
-};
-
-struct section_base {
- char sectname[16];
- char segname[16];
-};
-
-template<typename T>
-static void SwapValue(T &Value) {
- Value = sys::SwapByteOrder(Value);
+namespace {
+ struct section_base {
+ char sectname[16];
+ char segname[16];
+ };
}
template<typename T>
-static void SwapStruct(T &Value);
-
-template<>
-void SwapStruct(MachO::any_relocation_info &H) {
- SwapValue(H.r_word0);
- SwapValue(H.r_word1);
-}
-
-template<>
-void SwapStruct(MachO::load_command &L) {
- SwapValue(L.cmd);
- SwapValue(L.cmdsize);
-}
-
-template<>
-void SwapStruct(nlist_base &S) {
- SwapValue(S.n_strx);
- SwapValue(S.n_desc);
-}
-
-template<>
-void SwapStruct(MachO::section &S) {
- SwapValue(S.addr);
- SwapValue(S.size);
- SwapValue(S.offset);
- SwapValue(S.align);
- SwapValue(S.reloff);
- SwapValue(S.nreloc);
- SwapValue(S.flags);
- SwapValue(S.reserved1);
- SwapValue(S.reserved2);
-}
-
-template<>
-void SwapStruct(MachO::section_64 &S) {
- SwapValue(S.addr);
- SwapValue(S.size);
- SwapValue(S.offset);
- SwapValue(S.align);
- SwapValue(S.reloff);
- SwapValue(S.nreloc);
- SwapValue(S.flags);
- SwapValue(S.reserved1);
- SwapValue(S.reserved2);
- SwapValue(S.reserved3);
-}
-
-template<>
-void SwapStruct(MachO::nlist &S) {
- SwapValue(S.n_strx);
- SwapValue(S.n_desc);
- SwapValue(S.n_value);
-}
-
-template<>
-void SwapStruct(MachO::nlist_64 &S) {
- SwapValue(S.n_strx);
- SwapValue(S.n_desc);
- SwapValue(S.n_value);
-}
-
-template<>
-void SwapStruct(MachO::mach_header &H) {
- SwapValue(H.magic);
- SwapValue(H.cputype);
- SwapValue(H.cpusubtype);
- SwapValue(H.filetype);
- SwapValue(H.ncmds);
- SwapValue(H.sizeofcmds);
- SwapValue(H.flags);
-}
-
-template<>
-void SwapStruct(MachO::mach_header_64 &H) {
- SwapValue(H.magic);
- SwapValue(H.cputype);
- SwapValue(H.cpusubtype);
- SwapValue(H.filetype);
- SwapValue(H.ncmds);
- SwapValue(H.sizeofcmds);
- SwapValue(H.flags);
- SwapValue(H.reserved);
-}
-
-template<>
-void SwapStruct(MachO::symtab_command &C) {
- SwapValue(C.cmd);
- SwapValue(C.cmdsize);
- SwapValue(C.symoff);
- SwapValue(C.nsyms);
- SwapValue(C.stroff);
- SwapValue(C.strsize);
-}
-
-template<>
-void SwapStruct(MachO::dysymtab_command &C) {
- SwapValue(C.cmd);
- SwapValue(C.cmdsize);
- SwapValue(C.ilocalsym);
- SwapValue(C.nlocalsym);
- SwapValue(C.iextdefsym);
- SwapValue(C.nextdefsym);
- SwapValue(C.iundefsym);
- SwapValue(C.nundefsym);
- SwapValue(C.tocoff);
- SwapValue(C.ntoc);
- SwapValue(C.modtaboff);
- SwapValue(C.nmodtab);
- SwapValue(C.extrefsymoff);
- SwapValue(C.nextrefsyms);
- SwapValue(C.indirectsymoff);
- SwapValue(C.nindirectsyms);
- SwapValue(C.extreloff);
- SwapValue(C.nextrel);
- SwapValue(C.locreloff);
- SwapValue(C.nlocrel);
-}
-
-template<>
-void SwapStruct(MachO::linkedit_data_command &C) {
- SwapValue(C.cmd);
- SwapValue(C.cmdsize);
- SwapValue(C.dataoff);
- SwapValue(C.datasize);
-}
-
-template<>
-void SwapStruct(MachO::segment_command &C) {
- SwapValue(C.cmd);
- SwapValue(C.cmdsize);
- SwapValue(C.vmaddr);
- SwapValue(C.vmsize);
- SwapValue(C.fileoff);
- SwapValue(C.filesize);
- SwapValue(C.maxprot);
- SwapValue(C.initprot);
- SwapValue(C.nsects);
- SwapValue(C.flags);
-}
-
-template<>
-void SwapStruct(MachO::segment_command_64 &C) {
- SwapValue(C.cmd);
- SwapValue(C.cmdsize);
- SwapValue(C.vmaddr);
- SwapValue(C.vmsize);
- SwapValue(C.fileoff);
- SwapValue(C.filesize);
- SwapValue(C.maxprot);
- SwapValue(C.initprot);
- SwapValue(C.nsects);
- SwapValue(C.flags);
-}
-
-template<>
-void SwapStruct(uint32_t &C) {
- SwapValue(C);
-}
-
-template<>
-void SwapStruct(MachO::linker_options_command &C) {
- SwapValue(C.cmd);
- SwapValue(C.cmdsize);
- SwapValue(C.count);
-}
-
-template<>
-void SwapStruct(MachO::version_min_command&C) {
- SwapValue(C.cmd);
- SwapValue(C.cmdsize);
- SwapValue(C.version);
- SwapValue(C.reserved);
-}
-
-template<>
-void SwapStruct(MachO::data_in_code_entry &C) {
- SwapValue(C.offset);
- SwapValue(C.length);
- SwapValue(C.kind);
-}
-
-template<typename T>
-T getStruct(const MachOObjectFile *O, const char *P) {
+static T getStruct(const MachOObjectFile *O, const char *P) {
T Cmd;
memcpy(&Cmd, P, sizeof(T));
if (O->isLittleEndian() != sys::IsLittleEndianHost)
- SwapStruct(Cmd);
+ MachO::swapStruct(Cmd);
return Cmd;
}
return O->getData().substr(Offset, 1).data();
}
-static nlist_base
+static MachO::nlist_base
getSymbolTableEntryBase(const MachOObjectFile *O, DataRefImpl DRI) {
const char *P = reinterpret_cast<const char *>(DRI.p);
- return getStruct<nlist_base>(O, P);
+ return getStruct<MachO::nlist_base>(O, P);
}
static StringRef parseSegmentOrSectionName(const char *P) {
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;
return Sect.flags;
}
-MachOObjectFile::MachOObjectFile(MemoryBuffer *Object, bool IsLittleEndian,
- bool Is64bits, error_code &EC,
- bool BufferOwned)
- : ObjectFile(getMachOType(IsLittleEndian, Is64bits), Object, BufferOwned),
- SymtabLoadCmd(NULL), DysymtabLoadCmd(NULL), DataInCodeLoadCmd(NULL) {
+MachOObjectFile::MachOObjectFile(MemoryBufferRef Object, bool IsLittleEndian,
+ bool Is64bits, std::error_code &EC)
+ : ObjectFile(getMachOType(IsLittleEndian, Is64bits), Object),
+ SymtabLoadCmd(nullptr), DysymtabLoadCmd(nullptr),
+ DataInCodeLoadCmd(nullptr), DyldInfoLoadCmd(nullptr) {
uint32_t LoadCommandCount = this->getHeader().ncmds;
MachO::LoadCommandType SegmentLoadType = is64Bit() ?
MachO::LC_SEGMENT_64 : MachO::LC_SEGMENT;
} else if (Load.C.cmd == MachO::LC_DATA_IN_CODE) {
assert(!DataInCodeLoadCmd && "Multiple data in code tables");
DataInCodeLoadCmd = Load.Ptr;
+ } else if (Load.C.cmd == MachO::LC_DYLD_INFO ||
+ Load.C.cmd == MachO::LC_DYLD_INFO_ONLY) {
+ assert(!DyldInfoLoadCmd && "Multiple dyldinfo load commands");
+ DyldInfoLoadCmd = Load.Ptr;
} else if (Load.C.cmd == SegmentLoadType) {
uint32_t NumSections = getSegmentLoadCommandNumSections(this, Load);
for (unsigned J = 0; J < NumSections; ++J) {
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);
+ MachO::nlist_base Entry = getSymbolTableEntryBase(this, Symb);
const char *Start = &StringTable.data()[Entry.n_strx];
Res = StringRef(Start);
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::getSymbolAlignment(DataRefImpl DRI,
- uint32_t &Result) const {
+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;
+}
+
+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);
+ MachO::nlist_base Entry = getSymbolTableEntryBase(this, DRI);
Result = 1 << MachO::GET_COMM_ALIGN(Entry.n_desc);
} else {
Result = 0;
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);
+ MachO::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 {
- nlist_base Entry = getSymbolTableEntryBase(this, Symb);
+std::error_code MachOObjectFile::getSymbolType(DataRefImpl Symb,
+ SymbolRef::Type &Res) const {
+ MachO::nlist_base Entry = getSymbolTableEntryBase(this, Symb);
uint8_t n_type = Entry.n_type;
Res = SymbolRef::ST_Other;
}
uint32_t MachOObjectFile::getSymbolFlags(DataRefImpl DRI) const {
- nlist_base Entry = getSymbolTableEntryBase(this, DRI);
+ MachO::nlist_base Entry = getSymbolTableEntryBase(this, DRI);
uint8_t MachOType = Entry.n_type;
uint16_t MachOFlags = Entry.n_desc;
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;
}
}
if (MachOFlags & (MachO::N_WEAK_REF | MachO::N_WEAK_DEF))
Result |= SymbolRef::SF_Weak;
+ if (MachOFlags & (MachO::N_ARM_THUMB_DEF))
+ Result |= SymbolRef::SF_Thumb;
+
if ((MachOType & MachO::N_TYPE) == MachO::N_ABS)
Result |= SymbolRef::SF_Absolute;
return Result;
}
-error_code
-MachOObjectFile::getSymbolSection(DataRefImpl Symb,
- section_iterator &Res) const {
- nlist_base Entry = getSymbolTableEntryBase(this, Symb);
+std::error_code MachOObjectFile::getSymbolSection(DataRefImpl Symb,
+ section_iterator &Res) const {
+ MachO::nlist_base Entry = getSymbolTableEntryBase(this, Symb);
uint8_t index = Entry.n_sect;
if (index == 0) {
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));
}
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;
symbol_iterator
MachOObjectFile::getRelocationSymbol(DataRefImpl Rel) const {
MachO::any_relocation_info RE = getRelocation(Rel);
+ if (isRelocationScattered(RE))
+ return symbol_end();
+
uint32_t SymbolIdx = getPlainRelocationSymbolNum(RE);
bool isExtern = getPlainRelocationExternal(RE);
if (!isExtern)
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;
res = Table[RType];
break;
}
- case Triple::arm64:
case Triple::aarch64: {
static const char *const Table[] = {
"ARM64_RELOC_UNSIGNED", "ARM64_RELOC_SUBTRACTOR",
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 {
- report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
+//
+// 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);
+ }
+
+ // 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;
}
-error_code MachOObjectFile::getLibraryPath(DataRefImpl LibData,
- StringRef &Res) const {
- report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
+// 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) const {
+ 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;
+ }
+ const char *P = (const 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 {
- DataRefImpl DRI;
- if (!SymtabLoadCmd)
- return basic_symbol_iterator(SymbolRef(DRI, this));
-
- MachO::symtab_command Symtab = getSymtabLoadCommand();
- DRI.p = reinterpret_cast<uintptr_t>(getPtr(this, Symtab.symoff));
- return basic_symbol_iterator(SymbolRef(DRI, this));
+ 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));
return section_iterator(SectionRef(DRI, this));
}
-library_iterator MachOObjectFile::needed_library_begin() const {
- // TODO: implement
- report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
-}
-
-library_iterator MachOObjectFile::needed_library_end() const {
- // TODO: implement
- report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
-}
-
uint8_t MachOObjectFile::getBytesInAddress() const {
return is64Bit() ? 8 : 4;
}
case llvm::MachO::CPU_TYPE_ARM:
return Triple::arm;
case llvm::MachO::CPU_TYPE_ARM64:
- return Triple::arm64;
+ return Triple::aarch64;
case llvm::MachO::CPU_TYPE_POWERPC:
return Triple::ppc;
case llvm::MachO::CPU_TYPE_POWERPC64:
}
}
+Triple MachOObjectFile::getArch(uint32_t CPUType, uint32_t CPUSubType,
+ const char **McpuDefault) {
+ if (McpuDefault)
+ *McpuDefault = nullptr;
+
+ switch (CPUType) {
+ case MachO::CPU_TYPE_I386:
+ switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) {
+ case MachO::CPU_SUBTYPE_I386_ALL:
+ return Triple("i386-apple-darwin");
+ default:
+ return Triple();
+ }
+ case MachO::CPU_TYPE_X86_64:
+ switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) {
+ case MachO::CPU_SUBTYPE_X86_64_ALL:
+ return Triple("x86_64-apple-darwin");
+ case MachO::CPU_SUBTYPE_X86_64_H:
+ return Triple("x86_64h-apple-darwin");
+ default:
+ return Triple();
+ }
+ case MachO::CPU_TYPE_ARM:
+ switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) {
+ case MachO::CPU_SUBTYPE_ARM_V4T:
+ return Triple("armv4t-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V5TEJ:
+ return Triple("armv5e-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_XSCALE:
+ return Triple("xscale-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V6:
+ return Triple("armv6-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V6M:
+ if (McpuDefault)
+ *McpuDefault = "cortex-m0";
+ return Triple("armv6m-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7:
+ return Triple("armv7-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7EM:
+ if (McpuDefault)
+ *McpuDefault = "cortex-m4";
+ return Triple("armv7em-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7K:
+ return Triple("armv7k-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7M:
+ if (McpuDefault)
+ *McpuDefault = "cortex-m3";
+ return Triple("armv7m-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7S:
+ return Triple("armv7s-apple-darwin");
+ default:
+ return Triple();
+ }
+ case MachO::CPU_TYPE_ARM64:
+ switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) {
+ case MachO::CPU_SUBTYPE_ARM64_ALL:
+ return Triple("arm64-apple-darwin");
+ default:
+ return Triple();
+ }
+ case MachO::CPU_TYPE_POWERPC:
+ switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) {
+ case MachO::CPU_SUBTYPE_POWERPC_ALL:
+ return Triple("ppc-apple-darwin");
+ default:
+ return Triple();
+ }
+ case MachO::CPU_TYPE_POWERPC64:
+ switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) {
+ case MachO::CPU_SUBTYPE_POWERPC_ALL:
+ return Triple("ppc64-apple-darwin");
+ default:
+ return Triple();
+ }
+ default:
+ return Triple();
+ }
+}
+
+Triple MachOObjectFile::getThumbArch(uint32_t CPUType, uint32_t CPUSubType,
+ const char **McpuDefault) {
+ if (McpuDefault)
+ *McpuDefault = nullptr;
+
+ switch (CPUType) {
+ case MachO::CPU_TYPE_ARM:
+ switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) {
+ case MachO::CPU_SUBTYPE_ARM_V4T:
+ return Triple("thumbv4t-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V5TEJ:
+ return Triple("thumbv5e-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_XSCALE:
+ return Triple("xscale-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V6:
+ return Triple("thumbv6-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V6M:
+ if (McpuDefault)
+ *McpuDefault = "cortex-m0";
+ return Triple("thumbv6m-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7:
+ return Triple("thumbv7-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7EM:
+ if (McpuDefault)
+ *McpuDefault = "cortex-m4";
+ return Triple("thumbv7em-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7K:
+ return Triple("thumbv7k-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7M:
+ if (McpuDefault)
+ *McpuDefault = "cortex-m3";
+ return Triple("thumbv7m-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7S:
+ return Triple("thumbv7s-apple-darwin");
+ default:
+ return Triple();
+ }
+ default:
+ return Triple();
+ }
+}
+
+Triple MachOObjectFile::getArch(uint32_t CPUType, uint32_t CPUSubType,
+ const char **McpuDefault,
+ Triple *ThumbTriple) {
+ Triple T = MachOObjectFile::getArch(CPUType, CPUSubType, McpuDefault);
+ *ThumbTriple = MachOObjectFile::getThumbArch(CPUType, CPUSubType,
+ McpuDefault);
+ return T;
+}
+
+Triple MachOObjectFile::getHostArch() {
+ return Triple(sys::getDefaultTargetTriple());
+}
+
+bool MachOObjectFile::isValidArch(StringRef ArchFlag) {
+ return StringSwitch<bool>(ArchFlag)
+ .Case("i386", true)
+ .Case("x86_64", true)
+ .Case("x86_64h", true)
+ .Case("armv4t", true)
+ .Case("arm", true)
+ .Case("armv5e", true)
+ .Case("armv6", true)
+ .Case("armv6m", true)
+ .Case("armv7em", true)
+ .Case("armv7k", true)
+ .Case("armv7m", true)
+ .Case("armv7s", true)
+ .Case("arm64", true)
+ .Case("ppc", true)
+ .Case("ppc64", true)
+ .Default(false);
+}
+
unsigned MachOObjectFile::getArch() const {
return getArch(getCPUType(this));
}
-StringRef MachOObjectFile::getLoadName() const {
- // TODO: Implement
- report_fatal_error("get_load_name() unimplemented in MachOObjectFile");
+Triple MachOObjectFile::getArch(const char **McpuDefault,
+ Triple *ThumbTriple) const {
+ Triple T;
+ if (is64Bit()) {
+ MachO::mach_header_64 H_64;
+ H_64 = getHeader64();
+ T = MachOObjectFile::getArch(H_64.cputype, H_64.cpusubtype, McpuDefault);
+ *ThumbTriple = MachOObjectFile::getThumbArch(H_64.cputype, H_64.cpusubtype,
+ McpuDefault);
+ } else {
+ MachO::mach_header H;
+ H = getHeader();
+ T = MachOObjectFile::getArch(H.cputype, H.cpusubtype, McpuDefault);
+ *ThumbTriple = MachOObjectFile::getThumbArch(H.cputype, H.cpusubtype,
+ McpuDefault);
+ }
+ return T;
}
relocation_iterator MachOObjectFile::section_rel_begin(unsigned Index) const {
return dice_iterator(DiceRef(DRI, this));
}
+ExportEntry::ExportEntry(ArrayRef<uint8_t> T)
+ : Trie(T), Malformed(false), Done(false) { }
+
+void ExportEntry::moveToFirst() {
+ pushNode(0);
+ pushDownUntilBottom();
+}
+
+void ExportEntry::moveToEnd() {
+ Stack.clear();
+ Done = true;
+}
+
+bool ExportEntry::operator==(const ExportEntry &Other) const {
+ // Common case, one at end, other iterating from begin.
+ if (Done || Other.Done)
+ return (Done == Other.Done);
+ // Not equal if different stack sizes.
+ if (Stack.size() != Other.Stack.size())
+ return false;
+ // Not equal if different cumulative strings.
+ if (!CumulativeString.str().equals(Other.CumulativeString.str()))
+ return false;
+ // Equal if all nodes in both stacks match.
+ for (unsigned i=0; i < Stack.size(); ++i) {
+ if (Stack[i].Start != Other.Stack[i].Start)
+ return false;
+ }
+ return true;
+}
+
+uint64_t ExportEntry::readULEB128(const uint8_t *&Ptr) {
+ unsigned Count;
+ uint64_t Result = decodeULEB128(Ptr, &Count);
+ Ptr += Count;
+ if (Ptr > Trie.end()) {
+ Ptr = Trie.end();
+ Malformed = true;
+ }
+ return Result;
+}
+
+StringRef ExportEntry::name() const {
+ return CumulativeString.str();
+}
+
+uint64_t ExportEntry::flags() const {
+ return Stack.back().Flags;
+}
+
+uint64_t ExportEntry::address() const {
+ return Stack.back().Address;
+}
+
+uint64_t ExportEntry::other() const {
+ return Stack.back().Other;
+}
+
+StringRef ExportEntry::otherName() const {
+ const char* ImportName = Stack.back().ImportName;
+ if (ImportName)
+ return StringRef(ImportName);
+ return StringRef();
+}
+
+uint32_t ExportEntry::nodeOffset() const {
+ return Stack.back().Start - Trie.begin();
+}
+
+ExportEntry::NodeState::NodeState(const uint8_t *Ptr)
+ : Start(Ptr), Current(Ptr), Flags(0), Address(0), Other(0),
+ ImportName(nullptr), ChildCount(0), NextChildIndex(0),
+ ParentStringLength(0), IsExportNode(false) {
+}
+
+void ExportEntry::pushNode(uint64_t offset) {
+ const uint8_t *Ptr = Trie.begin() + offset;
+ NodeState State(Ptr);
+ uint64_t ExportInfoSize = readULEB128(State.Current);
+ State.IsExportNode = (ExportInfoSize != 0);
+ const uint8_t* Children = State.Current + ExportInfoSize;
+ if (State.IsExportNode) {
+ State.Flags = readULEB128(State.Current);
+ if (State.Flags & MachO::EXPORT_SYMBOL_FLAGS_REEXPORT) {
+ State.Address = 0;
+ State.Other = readULEB128(State.Current); // dylib ordinal
+ State.ImportName = reinterpret_cast<const char*>(State.Current);
+ } else {
+ State.Address = readULEB128(State.Current);
+ if (State.Flags & MachO::EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER)
+ State.Other = readULEB128(State.Current);
+ }
+ }
+ State.ChildCount = *Children;
+ State.Current = Children + 1;
+ State.NextChildIndex = 0;
+ State.ParentStringLength = CumulativeString.size();
+ Stack.push_back(State);
+}
+
+void ExportEntry::pushDownUntilBottom() {
+ while (Stack.back().NextChildIndex < Stack.back().ChildCount) {
+ NodeState &Top = Stack.back();
+ CumulativeString.resize(Top.ParentStringLength);
+ for (;*Top.Current != 0; Top.Current++) {
+ char C = *Top.Current;
+ CumulativeString.push_back(C);
+ }
+ Top.Current += 1;
+ uint64_t childNodeIndex = readULEB128(Top.Current);
+ Top.NextChildIndex += 1;
+ pushNode(childNodeIndex);
+ }
+ if (!Stack.back().IsExportNode) {
+ Malformed = true;
+ moveToEnd();
+ }
+}
+
+// We have a trie data structure and need a way to walk it that is compatible
+// with the C++ iterator model. The solution is a non-recursive depth first
+// traversal where the iterator contains a stack of parent nodes along with a
+// string that is the accumulation of all edge strings along the parent chain
+// to this point.
+//
+// There is one “export” node for each exported symbol. But because some
+// symbols may be a prefix of another symbol (e.g. _dup and _dup2), an export
+// node may have child nodes too.
+//
+// The algorithm for moveNext() is to keep moving down the leftmost unvisited
+// child until hitting a node with no children (which is an export node or
+// else the trie is malformed). On the way down, each node is pushed on the
+// stack ivar. If there is no more ways down, it pops up one and tries to go
+// down a sibling path until a childless node is reached.
+void ExportEntry::moveNext() {
+ if (Stack.empty() || !Stack.back().IsExportNode) {
+ Malformed = true;
+ moveToEnd();
+ return;
+ }
+
+ Stack.pop_back();
+ while (!Stack.empty()) {
+ NodeState &Top = Stack.back();
+ if (Top.NextChildIndex < Top.ChildCount) {
+ pushDownUntilBottom();
+ // Now at the next export node.
+ return;
+ } else {
+ if (Top.IsExportNode) {
+ // This node has no children but is itself an export node.
+ CumulativeString.resize(Top.ParentStringLength);
+ return;
+ }
+ Stack.pop_back();
+ }
+ }
+ Done = true;
+}
+
+iterator_range<export_iterator>
+MachOObjectFile::exports(ArrayRef<uint8_t> Trie) {
+ ExportEntry Start(Trie);
+ Start.moveToFirst();
+
+ ExportEntry Finish(Trie);
+ Finish.moveToEnd();
+
+ return iterator_range<export_iterator>(export_iterator(Start),
+ export_iterator(Finish));
+}
+
+iterator_range<export_iterator> MachOObjectFile::exports() const {
+ return exports(getDyldInfoExportsTrie());
+}
+
+
StringRef
MachOObjectFile::getSectionFinalSegmentName(DataRefImpl Sec) const {
ArrayRef<char> Raw = getSectionRawFinalSegmentName(Sec);
MachOObjectFile::getSectionRawName(DataRefImpl Sec) const {
const section_base *Base =
reinterpret_cast<const section_base *>(Sections[Sec.d.a]);
- return ArrayRef<char>(Base->sectname);
+ return makeArrayRef(Base->sectname);
}
ArrayRef<char>
MachOObjectFile::getSectionRawFinalSegmentName(DataRefImpl Sec) const {
const section_base *Base =
reinterpret_cast<const section_base *>(Sections[Sec.d.a]);
- return ArrayRef<char>(Base->segname);
+ return makeArrayRef(Base->segname);
}
bool
return getStruct<MachO::version_min_command>(this, L.Ptr);
}
+MachO::dylib_command
+MachOObjectFile::getDylibIDLoadCommand(const LoadCommandInfo &L) const {
+ return getStruct<MachO::dylib_command>(this, L.Ptr);
+}
+
+MachO::dyld_info_command
+MachOObjectFile::getDyldInfoLoadCommand(const LoadCommandInfo &L) const {
+ return getStruct<MachO::dyld_info_command>(this, L.Ptr);
+}
+
+MachO::dylinker_command
+MachOObjectFile::getDylinkerCommand(const LoadCommandInfo &L) const {
+ return getStruct<MachO::dylinker_command>(this, L.Ptr);
+}
+
+MachO::uuid_command
+MachOObjectFile::getUuidCommand(const LoadCommandInfo &L) const {
+ return getStruct<MachO::uuid_command>(this, L.Ptr);
+}
+
+MachO::source_version_command
+MachOObjectFile::getSourceVersionCommand(const LoadCommandInfo &L) const {
+ return getStruct<MachO::source_version_command>(this, L.Ptr);
+}
+
+MachO::entry_point_command
+MachOObjectFile::getEntryPointCommand(const LoadCommandInfo &L) const {
+ return getStruct<MachO::entry_point_command>(this, L.Ptr);
+}
+
+
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
return Cmd;
}
+ArrayRef<uint8_t> MachOObjectFile::getDyldInfoRebaseOpcodes() const {
+ if (!DyldInfoLoadCmd)
+ return ArrayRef<uint8_t>();
+
+ MachO::dyld_info_command DyldInfo
+ = getStruct<MachO::dyld_info_command>(this, DyldInfoLoadCmd);
+ const uint8_t *Ptr = reinterpret_cast<const uint8_t*>(
+ getPtr(this, DyldInfo.rebase_off));
+ return ArrayRef<uint8_t>(Ptr, DyldInfo.rebase_size);
+}
+
+ArrayRef<uint8_t> MachOObjectFile::getDyldInfoBindOpcodes() const {
+ if (!DyldInfoLoadCmd)
+ return ArrayRef<uint8_t>();
+
+ MachO::dyld_info_command DyldInfo
+ = getStruct<MachO::dyld_info_command>(this, DyldInfoLoadCmd);
+ const uint8_t *Ptr = reinterpret_cast<const uint8_t*>(
+ getPtr(this, DyldInfo.bind_off));
+ return ArrayRef<uint8_t>(Ptr, DyldInfo.bind_size);
+}
+
+ArrayRef<uint8_t> MachOObjectFile::getDyldInfoWeakBindOpcodes() const {
+ if (!DyldInfoLoadCmd)
+ return ArrayRef<uint8_t>();
+
+ MachO::dyld_info_command DyldInfo
+ = getStruct<MachO::dyld_info_command>(this, DyldInfoLoadCmd);
+ const uint8_t *Ptr = reinterpret_cast<const uint8_t*>(
+ getPtr(this, DyldInfo.weak_bind_off));
+ return ArrayRef<uint8_t>(Ptr, DyldInfo.weak_bind_size);
+}
+
+ArrayRef<uint8_t> MachOObjectFile::getDyldInfoLazyBindOpcodes() const {
+ if (!DyldInfoLoadCmd)
+ return ArrayRef<uint8_t>();
+
+ MachO::dyld_info_command DyldInfo
+ = getStruct<MachO::dyld_info_command>(this, DyldInfoLoadCmd);
+ const uint8_t *Ptr = reinterpret_cast<const uint8_t*>(
+ getPtr(this, DyldInfo.lazy_bind_off));
+ return ArrayRef<uint8_t>(Ptr, DyldInfo.lazy_bind_size);
+}
+
+ArrayRef<uint8_t> MachOObjectFile::getDyldInfoExportsTrie() const {
+ if (!DyldInfoLoadCmd)
+ return ArrayRef<uint8_t>();
+
+ MachO::dyld_info_command DyldInfo
+ = getStruct<MachO::dyld_info_command>(this, DyldInfoLoadCmd);
+ const uint8_t *Ptr = reinterpret_cast<const uint8_t*>(
+ getPtr(this, DyldInfo.export_off));
+ return ArrayRef<uint8_t>(Ptr, DyldInfo.export_size);
+}
+
+
StringRef MachOObjectFile::getStringTableData() const {
MachO::symtab_command S = getSymtabLoadCommand();
return getData().substr(S.stroff, S.strsize);
}
}
-ErrorOr<ObjectFile *> ObjectFile::createMachOObjectFile(MemoryBuffer *Buffer,
- bool BufferOwned) {
- StringRef Magic = Buffer->getBuffer().slice(0, 4);
- error_code EC;
+bool MachOObjectFile::isRelocatableObject() const {
+ return getHeader().filetype == MachO::MH_OBJECT;
+}
+
+ErrorOr<std::unique_ptr<MachOObjectFile>>
+ObjectFile::createMachOObjectFile(MemoryBufferRef Buffer) {
+ StringRef Magic = Buffer.getBuffer().slice(0, 4);
+ std::error_code EC;
std::unique_ptr<MachOObjectFile> Ret;
if (Magic == "\xFE\xED\xFA\xCE")
- Ret.reset(new MachOObjectFile(Buffer, false, false, EC, BufferOwned));
+ Ret.reset(new MachOObjectFile(Buffer, false, false, EC));
else if (Magic == "\xCE\xFA\xED\xFE")
- Ret.reset(new MachOObjectFile(Buffer, true, false, EC, BufferOwned));
+ Ret.reset(new MachOObjectFile(Buffer, true, false, EC));
else if (Magic == "\xFE\xED\xFA\xCF")
- Ret.reset(new MachOObjectFile(Buffer, false, true, EC, BufferOwned));
+ Ret.reset(new MachOObjectFile(Buffer, false, true, EC));
else if (Magic == "\xCF\xFA\xED\xFE")
- Ret.reset(new MachOObjectFile(Buffer, true, true, EC, BufferOwned));
- else {
- delete Buffer;
+ Ret.reset(new MachOObjectFile(Buffer, true, true, EC));
+ else
return object_error::parse_failed;
- }
if (EC)
return EC;
- return Ret.release();
+ return std::move(Ret);
}
-} // end namespace object
-} // end namespace llvm
projects / oota-llvm.git / blobdiff