index 75735418cba83b0abaccf7c38d20f905c48d0d7f..50e7f63a9307917cd68e302e6c59792399e5063b 100644 (file)
//===----------------------------------------------------------------------===//
#include "llvm/Object/MachO.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Triple.h"
-#include "llvm/Object/MachOFormat.h"
+#include "llvm/Support/DataExtractor.h"
#include "llvm/Support/Format.h"
+#include "llvm/Support/Host.h"
#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/raw_ostream.h"
#include <cctype>
#include <cstring>
#include <limits>
using namespace object;
namespace llvm {
-namespace object {
-MachOObjectFile::MachOObjectFile(MemoryBuffer *Object, error_code &ec)
- : ObjectFile(Binary::ID_MachO, Object) {
- // MachOObject takes ownership of the Buffer we passed to it, and
- // MachOObjectFile does, too, so we need to make sure they don't get the
- // same object. A MemoryBuffer is cheap (it's just a reference to memory,
- // not a copy of the memory itself), so just make a new copy here for
- // the MachOObjectFile.
- MemoryBuffer *NewBuffer =
- MemoryBuffer::getMemBuffer(Object->getBuffer(),
- Object->getBufferIdentifier(), false);
- std::string ErrorStr;
- MachOObj.reset(MachOObject::LoadFromBuffer(NewBuffer, &ErrorStr));
- if (!MachOObj) {
- ec = object_error::parse_failed;
- return;
- }
+namespace object {
- DataRefImpl DRI;
- moveToNextSection(DRI);
- uint32_t LoadCommandCount = getHeader()->NumLoadCommands;
- while (DRI.d.a < LoadCommandCount) {
- Sections.push_back(DRI);
- DRI.d.b++;
- moveToNextSection(DRI);
+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 SwapStruct(T &Value);
+
+template<>
+void SwapStruct(MachO::any_relocation_info &H) {
+ sys::swapByteOrder(H.r_word0);
+ sys::swapByteOrder(H.r_word1);
+}
+
+template<>
+void SwapStruct(MachO::load_command &L) {
+ sys::swapByteOrder(L.cmd);
+ sys::swapByteOrder(L.cmdsize);
+}
+
+template<>
+void SwapStruct(nlist_base &S) {
+ sys::swapByteOrder(S.n_strx);
+ sys::swapByteOrder(S.n_desc);
+}
+
+template<>
+void SwapStruct(MachO::section &S) {
+ sys::swapByteOrder(S.addr);
+ sys::swapByteOrder(S.size);
+ sys::swapByteOrder(S.offset);
+ sys::swapByteOrder(S.align);
+ sys::swapByteOrder(S.reloff);
+ sys::swapByteOrder(S.nreloc);
+ sys::swapByteOrder(S.flags);
+ sys::swapByteOrder(S.reserved1);
+ sys::swapByteOrder(S.reserved2);
+}
+
+template<>
+void SwapStruct(MachO::section_64 &S) {
+ sys::swapByteOrder(S.addr);
+ sys::swapByteOrder(S.size);
+ sys::swapByteOrder(S.offset);
+ sys::swapByteOrder(S.align);
+ sys::swapByteOrder(S.reloff);
+ sys::swapByteOrder(S.nreloc);
+ sys::swapByteOrder(S.flags);
+ sys::swapByteOrder(S.reserved1);
+ sys::swapByteOrder(S.reserved2);
+ sys::swapByteOrder(S.reserved3);
+}
+
+template<>
+void SwapStruct(MachO::nlist &S) {
+ sys::swapByteOrder(S.n_strx);
+ sys::swapByteOrder(S.n_desc);
+ sys::swapByteOrder(S.n_value);
+}
+
+template<>
+void SwapStruct(MachO::nlist_64 &S) {
+ sys::swapByteOrder(S.n_strx);
+ sys::swapByteOrder(S.n_desc);
+ sys::swapByteOrder(S.n_value);
+}
+
+template<>
+void SwapStruct(MachO::mach_header &H) {
+ sys::swapByteOrder(H.magic);
+ sys::swapByteOrder(H.cputype);
+ sys::swapByteOrder(H.cpusubtype);
+ sys::swapByteOrder(H.filetype);
+ sys::swapByteOrder(H.ncmds);
+ sys::swapByteOrder(H.sizeofcmds);
+ sys::swapByteOrder(H.flags);
+}
+
+template<>
+void SwapStruct(MachO::mach_header_64 &H) {
+ sys::swapByteOrder(H.magic);
+ sys::swapByteOrder(H.cputype);
+ sys::swapByteOrder(H.cpusubtype);
+ sys::swapByteOrder(H.filetype);
+ sys::swapByteOrder(H.ncmds);
+ sys::swapByteOrder(H.sizeofcmds);
+ sys::swapByteOrder(H.flags);
+ sys::swapByteOrder(H.reserved);
+}
+
+template<>
+void SwapStruct(MachO::symtab_command &C) {
+ sys::swapByteOrder(C.cmd);
+ sys::swapByteOrder(C.cmdsize);
+ sys::swapByteOrder(C.symoff);
+ sys::swapByteOrder(C.nsyms);
+ sys::swapByteOrder(C.stroff);
+ sys::swapByteOrder(C.strsize);
+}
+
+template<>
+void SwapStruct(MachO::dysymtab_command &C) {
+ sys::swapByteOrder(C.cmd);
+ sys::swapByteOrder(C.cmdsize);
+ sys::swapByteOrder(C.ilocalsym);
+ sys::swapByteOrder(C.nlocalsym);
+ sys::swapByteOrder(C.iextdefsym);
+ sys::swapByteOrder(C.nextdefsym);
+ sys::swapByteOrder(C.iundefsym);
+ sys::swapByteOrder(C.nundefsym);
+ sys::swapByteOrder(C.tocoff);
+ sys::swapByteOrder(C.ntoc);
+ sys::swapByteOrder(C.modtaboff);
+ sys::swapByteOrder(C.nmodtab);
+ sys::swapByteOrder(C.extrefsymoff);
+ sys::swapByteOrder(C.nextrefsyms);
+ sys::swapByteOrder(C.indirectsymoff);
+ sys::swapByteOrder(C.nindirectsyms);
+ sys::swapByteOrder(C.extreloff);
+ sys::swapByteOrder(C.nextrel);
+ sys::swapByteOrder(C.locreloff);
+ sys::swapByteOrder(C.nlocrel);
+}
+
+template<>
+void SwapStruct(MachO::linkedit_data_command &C) {
+ sys::swapByteOrder(C.cmd);
+ sys::swapByteOrder(C.cmdsize);
+ sys::swapByteOrder(C.dataoff);
+ sys::swapByteOrder(C.datasize);
+}
+
+template<>
+void SwapStruct(MachO::segment_command &C) {
+ sys::swapByteOrder(C.cmd);
+ sys::swapByteOrder(C.cmdsize);
+ sys::swapByteOrder(C.vmaddr);
+ sys::swapByteOrder(C.vmsize);
+ sys::swapByteOrder(C.fileoff);
+ sys::swapByteOrder(C.filesize);
+ sys::swapByteOrder(C.maxprot);
+ sys::swapByteOrder(C.initprot);
+ sys::swapByteOrder(C.nsects);
+ sys::swapByteOrder(C.flags);
+}
+
+template<>
+void SwapStruct(MachO::segment_command_64 &C) {
+ sys::swapByteOrder(C.cmd);
+ sys::swapByteOrder(C.cmdsize);
+ sys::swapByteOrder(C.vmaddr);
+ sys::swapByteOrder(C.vmsize);
+ sys::swapByteOrder(C.fileoff);
+ sys::swapByteOrder(C.filesize);
+ sys::swapByteOrder(C.maxprot);
+ sys::swapByteOrder(C.initprot);
+ sys::swapByteOrder(C.nsects);
+ sys::swapByteOrder(C.flags);
+}
+
+template<>
+void SwapStruct(uint32_t &C) {
+ sys::swapByteOrder(C);
+}
+
+template<>
+void SwapStruct(MachO::linker_options_command &C) {
+ sys::swapByteOrder(C.cmd);
+ sys::swapByteOrder(C.cmdsize);
+ sys::swapByteOrder(C.count);
+}
+
+template<>
+void SwapStruct(MachO::version_min_command&C) {
+ sys::swapByteOrder(C.cmd);
+ sys::swapByteOrder(C.cmdsize);
+ sys::swapByteOrder(C.version);
+ sys::swapByteOrder(C.reserved);
+}
+
+template<>
+void SwapStruct(MachO::dylib_command&C) {
+ sys::swapByteOrder(C.cmd);
+ sys::swapByteOrder(C.cmdsize);
+ sys::swapByteOrder(C.dylib.name);
+ sys::swapByteOrder(C.dylib.timestamp);
+ sys::swapByteOrder(C.dylib.current_version);
+ sys::swapByteOrder(C.dylib.compatibility_version);
+}
+
+template<>
+void SwapStruct(MachO::data_in_code_entry &C) {
+ sys::swapByteOrder(C.offset);
+ sys::swapByteOrder(C.length);
+ sys::swapByteOrder(C.kind);
+}
+
+template<typename T>
+T getStruct(const MachOObjectFile *O, const char *P) {
+ T Cmd;
+ memcpy(&Cmd, P, sizeof(T));
+ if (O->isLittleEndian() != sys::IsLittleEndianHost)
+ SwapStruct(Cmd);
+ return Cmd;
+}
+
+static uint32_t
+getSegmentLoadCommandNumSections(const MachOObjectFile *O,
+ const MachOObjectFile::LoadCommandInfo &L) {
+ if (O->is64Bit()) {
+ MachO::segment_command_64 S = O->getSegment64LoadCommand(L);
+ return S.nsects;
}
+ MachO::segment_command S = O->getSegmentLoadCommand(L);
+ return S.nsects;
}
-bool MachOObjectFile::is64Bit() const {
- StringRef Magic = getData(0, 4);
- return (Magic == "\xFE\xED\xFA\xCF") || (Magic == "\xCF\xFA\xED\xFE");
-}
+static const char *
+getSectionPtr(const MachOObjectFile *O, MachOObjectFile::LoadCommandInfo L,
+ unsigned Sec) {
+ uintptr_t CommandAddr = reinterpret_cast<uintptr_t>(L.Ptr);
-const MachOFormat::LoadCommand *
-MachOObjectFile::getLoadCommandInfo(unsigned Index) const {
- uint64_t Offset;
- uint64_t NewOffset = getHeaderSize();
- const MachOFormat::LoadCommand *Load;
- unsigned I = 0;
- do {
- Offset = NewOffset;
- StringRef Data = getData(Offset, sizeof(MachOFormat::LoadCommand));
- Load = reinterpret_cast<const MachOFormat::LoadCommand*>(Data.data());
- NewOffset = Offset + Load->Size;
- ++I;
- } while (I != Index + 1);
+ bool Is64 = O->is64Bit();
+ unsigned SegmentLoadSize = Is64 ? sizeof(MachO::segment_command_64) :
+ sizeof(MachO::segment_command);
+ unsigned SectionSize = Is64 ? sizeof(MachO::section_64) :
+ sizeof(MachO::section);
- return Load;
+ uintptr_t SectionAddr = CommandAddr + SegmentLoadSize + Sec * SectionSize;
+ return reinterpret_cast<const char*>(SectionAddr);
}
-void MachOObjectFile::ReadULEB128s(uint64_t Index,
- SmallVectorImpl<uint64_t> &Out) const {
- return MachOObj->ReadULEB128s(Index, Out);
+static const char *getPtr(const MachOObjectFile *O, size_t Offset) {
+ return O->getData().substr(Offset, 1).data();
}
-const MachOFormat::Header *MachOObjectFile::getHeader() const {
- StringRef Data = getData(0, sizeof(MachOFormat::Header));
- return reinterpret_cast<const MachOFormat::Header*>(Data.data());
+static nlist_base
+getSymbolTableEntryBase(const MachOObjectFile *O, DataRefImpl DRI) {
+ const char *P = reinterpret_cast<const char *>(DRI.p);
+ return getStruct<nlist_base>(O, P);
}
-unsigned MachOObjectFile::getHeaderSize() const {
- return is64Bit() ? macho::Header64Size : macho::Header32Size;
+static StringRef parseSegmentOrSectionName(const char *P) {
+ if (P[15] == 0)
+ // Null terminated.
+ return P;
+ // Not null terminated, so this is a 16 char string.
+ return StringRef(P, 16);
}
-StringRef MachOObjectFile::getData(size_t Offset, size_t Size) const {
- return ObjectFile::getData().substr(Offset, Size);
+// Helper to advance a section or symbol iterator multiple increments at a time.
+template<class T>
+static void advance(T &it, size_t Val) {
+ while (Val--)
+ ++it;
}
-ObjectFile *ObjectFile::createMachOObjectFile(MemoryBuffer *Buffer) {
- error_code ec;
- ObjectFile *Ret = new MachOObjectFile(Buffer, ec);
- if (ec)
- return NULL;
- return Ret;
+static unsigned getCPUType(const MachOObjectFile *O) {
+ return O->getHeader().cputype;
}
-/*===-- Symbols -----------------------------------------------------------===*/
+static void printRelocationTargetName(const MachOObjectFile *O,
+ const MachO::any_relocation_info &RE,
+ raw_string_ostream &fmt) {
+ bool IsScattered = O->isRelocationScattered(RE);
+
+ // Target of a scattered relocation is an address. In the interest of
+ // generating pretty output, scan through the symbol table looking for a
+ // symbol that aligns with that address. If we find one, print it.
+ // Otherwise, we just print the hex address of the target.
+ if (IsScattered) {
+ uint32_t Val = O->getPlainRelocationSymbolNum(RE);
+
+ for (const SymbolRef &Symbol : O->symbols()) {
+ std::error_code ec;
+ uint64_t Addr;
+ StringRef Name;
+
+ if ((ec = Symbol.getAddress(Addr)))
+ report_fatal_error(ec.message());
+ if (Addr != Val)
+ continue;
+ if ((ec = Symbol.getName(Name)))
+ report_fatal_error(ec.message());
+ fmt << Name;
+ return;
+ }
+
+ // 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()) {
+ std::error_code ec;
+ uint64_t Addr;
+ StringRef Name;
-void MachOObjectFile::moveToNextSymbol(DataRefImpl &DRI) const {
- uint32_t LoadCommandCount = getHeader()->NumLoadCommands;
- while (DRI.d.a < LoadCommandCount) {
- const MachOFormat::LoadCommand *Command = getLoadCommandInfo(DRI.d.a);
- if (Command->Type == macho::LCT_Symtab) {
- const MachOFormat::SymtabLoadCommand *SymtabLoadCmd =
- reinterpret_cast<const MachOFormat::SymtabLoadCommand*>(Command);
- if (DRI.d.b < SymtabLoadCmd->NumSymbolTableEntries)
- return;
+ if ((ec = Section.getAddress(Addr)))
+ report_fatal_error(ec.message());
+ if (Addr != Val)
+ continue;
+ if ((ec = Section.getName(Name)))
+ report_fatal_error(ec.message());
+ fmt << Name;
+ return;
}
- DRI.d.a++;
- DRI.d.b = 0;
+ fmt << format("0x%x", Val);
+ return;
+ }
+
+ StringRef S;
+ bool isExtern = O->getPlainRelocationExternal(RE);
+ uint64_t Val = O->getPlainRelocationSymbolNum(RE);
+
+ if (isExtern) {
+ symbol_iterator SI = O->symbol_begin();
+ advance(SI, Val);
+ SI->getName(S);
+ } else {
+ section_iterator SI = O->section_begin();
+ // Adjust for the fact that sections are 1-indexed.
+ advance(SI, Val - 1);
+ SI->getName(S);
}
+
+ fmt << S;
}
-const MachOFormat::SymbolTableEntry *
-MachOObjectFile::getSymbolTableEntry(DataRefImpl DRI) const {
- const MachOFormat::LoadCommand *Command = getLoadCommandInfo(DRI.d.a);
- const MachOFormat::SymtabLoadCommand *SymtabLoadCmd =
- reinterpret_cast<const MachOFormat::SymtabLoadCommand*>(Command);
+static uint32_t
+getPlainRelocationAddress(const MachO::any_relocation_info &RE) {
+ return RE.r_word0;
+}
- return getSymbolTableEntry(DRI, SymtabLoadCmd);
+static unsigned
+getScatteredRelocationAddress(const MachO::any_relocation_info &RE) {
+ return RE.r_word0 & 0xffffff;
}
-const MachOFormat::SymbolTableEntry *
-MachOObjectFile::getSymbolTableEntry(DataRefImpl DRI,
- const MachOFormat::SymtabLoadCommand *SymtabLoadCmd) const {
- uint64_t SymbolTableOffset = SymtabLoadCmd->SymbolTableOffset;
- unsigned Index = DRI.d.b;
- uint64_t Offset = (SymbolTableOffset +
- Index * sizeof(macho::SymbolTableEntry));
- StringRef Data = getData(Offset, sizeof(MachOFormat::SymbolTableEntry));
- return reinterpret_cast<const MachOFormat::SymbolTableEntry*>(Data.data());
+static bool getPlainRelocationPCRel(const MachOObjectFile *O,
+ const MachO::any_relocation_info &RE) {
+ if (O->isLittleEndian())
+ return (RE.r_word1 >> 24) & 1;
+ return (RE.r_word1 >> 7) & 1;
}
-const MachOFormat::Symbol64TableEntry*
-MachOObjectFile::getSymbol64TableEntry(DataRefImpl DRI) const {
- const MachOFormat::LoadCommand *Command = getLoadCommandInfo(DRI.d.a);
- const MachOFormat::SymtabLoadCommand *SymtabLoadCmd =
- reinterpret_cast<const MachOFormat::SymtabLoadCommand*>(Command);
+static bool
+getScatteredRelocationPCRel(const MachOObjectFile *O,
+ const MachO::any_relocation_info &RE) {
+ return (RE.r_word0 >> 30) & 1;
+}
- return getSymbol64TableEntry(DRI, SymtabLoadCmd);
+static unsigned getPlainRelocationLength(const MachOObjectFile *O,
+ const MachO::any_relocation_info &RE) {
+ if (O->isLittleEndian())
+ return (RE.r_word1 >> 25) & 3;
+ return (RE.r_word1 >> 5) & 3;
}
-const MachOFormat::Symbol64TableEntry*
-MachOObjectFile::getSymbol64TableEntry(DataRefImpl DRI,
- const MachOFormat::SymtabLoadCommand *SymtabLoadCmd) const {
- uint64_t SymbolTableOffset = SymtabLoadCmd->SymbolTableOffset;
- unsigned Index = DRI.d.b;
- uint64_t Offset = (SymbolTableOffset +
- Index * sizeof(macho::Symbol64TableEntry));
- StringRef Data = getData(Offset, sizeof(MachOFormat::Symbol64TableEntry));
- return reinterpret_cast<const MachOFormat::Symbol64TableEntry*>(Data.data());
+static unsigned
+getScatteredRelocationLength(const MachO::any_relocation_info &RE) {
+ return (RE.r_word0 >> 28) & 3;
}
-error_code MachOObjectFile::getSymbolNext(DataRefImpl DRI,
- SymbolRef &Result) const {
- DRI.d.b++;
- moveToNextSymbol(DRI);
- Result = SymbolRef(DRI, this);
- return object_error::success;
+static unsigned getPlainRelocationType(const MachOObjectFile *O,
+ const MachO::any_relocation_info &RE) {
+ if (O->isLittleEndian())
+ return RE.r_word1 >> 28;
+ return RE.r_word1 & 0xf;
}
-error_code MachOObjectFile::getSymbolName(DataRefImpl DRI,
- StringRef &Result) const {
- const MachOFormat::LoadCommand *Command = getLoadCommandInfo(DRI.d.a);
- const MachOFormat::SymtabLoadCommand *SymtabLoadCmd =
- reinterpret_cast<const MachOFormat::SymtabLoadCommand*>(Command);
+static unsigned
+getScatteredRelocationType(const MachO::any_relocation_info &RE) {
+ return (RE.r_word0 >> 24) & 0xf;
+}
- StringRef StringTable = getData(SymtabLoadCmd->StringTableOffset,
- SymtabLoadCmd->StringTableSize);
+static uint32_t getSectionFlags(const MachOObjectFile *O,
+ DataRefImpl Sec) {
+ if (O->is64Bit()) {
+ MachO::section_64 Sect = O->getSection64(Sec);
+ return Sect.flags;
+ }
+ MachO::section Sect = O->getSection(Sec);
+ return Sect.flags;
+}
+
+MachOObjectFile::MachOObjectFile(std::unique_ptr<MemoryBuffer> Object,
+ bool IsLittleEndian, bool Is64bits,
+ std::error_code &EC)
+ : ObjectFile(getMachOType(IsLittleEndian, Is64bits), std::move(Object)),
+ SymtabLoadCmd(nullptr), DysymtabLoadCmd(nullptr),
+ DataInCodeLoadCmd(nullptr) {
+ uint32_t LoadCommandCount = this->getHeader().ncmds;
+ MachO::LoadCommandType SegmentLoadType = is64Bit() ?
+ MachO::LC_SEGMENT_64 : MachO::LC_SEGMENT;
+
+ MachOObjectFile::LoadCommandInfo Load = getFirstLoadCommandInfo();
+ for (unsigned I = 0; ; ++I) {
+ if (Load.C.cmd == MachO::LC_SYMTAB) {
+ assert(!SymtabLoadCmd && "Multiple symbol tables");
+ SymtabLoadCmd = Load.Ptr;
+ } else if (Load.C.cmd == MachO::LC_DYSYMTAB) {
+ assert(!DysymtabLoadCmd && "Multiple dynamic symbol tables");
+ DysymtabLoadCmd = Load.Ptr;
+ } 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 == 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);
+ }
- uint32_t StringIndex;
- if (is64Bit()) {
- const MachOFormat::Symbol64TableEntry *Entry =
- getSymbol64TableEntry(DRI, SymtabLoadCmd);
- StringIndex = Entry->StringIndex;
- } else {
- const MachOFormat::SymbolTableEntry *Entry =
- getSymbolTableEntry(DRI, SymtabLoadCmd);
- StringIndex = Entry->StringIndex;
+ if (I == LoadCommandCount - 1)
+ break;
+ else
+ Load = getNextLoadCommandInfo(Load);
}
+}
- const char *Start = &StringTable.data()[StringIndex];
- Result = StringRef(Start);
+void MachOObjectFile::moveSymbolNext(DataRefImpl &Symb) const {
+ unsigned SymbolTableEntrySize = is64Bit() ?
+ sizeof(MachO::nlist_64) :
+ sizeof(MachO::nlist);
+ Symb.p += SymbolTableEntrySize;
+}
+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];
+ Res = StringRef(Start);
return object_error::success;
}
-error_code MachOObjectFile::getSymbolFileOffset(DataRefImpl DRI,
- uint64_t &Result) 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()) {
- const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(DRI);
- Result = Entry->Value;
- if (Entry->SectionIndex) {
- const MachOFormat::Section64 *Section =
- getSection64(Sections[Entry->SectionIndex-1]);
- Result += Section->Offset - Section->Address;
- }
+ MachO::nlist_64 Entry = getSymbol64TableEntry(Symb);
+ NValue = Entry.n_value;
+ if ((Entry.n_type & MachO::N_TYPE) != MachO::N_INDR)
+ return object_error::parse_failed;
} else {
- const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(DRI);
- Result = Entry->Value;
- if (Entry->SectionIndex) {
- const MachOFormat::Section *Section =
- getSection(Sections[Entry->SectionIndex-1]);
- Result += Section->Offset - Section->Address;
- }
+ MachO::nlist Entry = getSymbolTableEntry(Symb);
+ 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::getSymbolAddress(DataRefImpl DRI,
- uint64_t &Result) const {
+std::error_code MachOObjectFile::getSymbolAddress(DataRefImpl Symb,
+ uint64_t &Res) const {
if (is64Bit()) {
- const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(DRI);
- Result = Entry->Value;
+ 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 {
- const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(DRI);
- Result = Entry->Value;
+ 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::getSymbolSize(DataRefImpl DRI,
- uint64_t &Result) const {
- uint32_t LoadCommandCount = getHeader()->NumLoadCommands;
- uint64_t BeginOffset;
- uint64_t EndOffset = 0;
- uint8_t SectionIndex;
- if (is64Bit()) {
- const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(DRI);
- BeginOffset = Entry->Value;
- SectionIndex = Entry->SectionIndex;
- if (!SectionIndex) {
- uint32_t flags = SymbolRef::SF_None;
- getSymbolFlags(DRI, flags);
- if (flags & SymbolRef::SF_Common)
- Result = Entry->Value;
- else
- Result = UnknownAddressOrSize;
- return object_error::success;
- }
- // Unfortunately symbols are unsorted so we need to touch all
- // symbols from load command
- DRI.d.b = 0;
- uint32_t Command = DRI.d.a;
- while (Command == DRI.d.a) {
- moveToNextSymbol(DRI);
- if (DRI.d.a < LoadCommandCount) {
- Entry = getSymbol64TableEntry(DRI);
- if (Entry->SectionIndex == SectionIndex && Entry->Value > BeginOffset)
- if (!EndOffset || Entry->Value < EndOffset)
- EndOffset = Entry->Value;
- }
- DRI.d.b++;
- }
+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);
+ Result = 1 << MachO::GET_COMM_ALIGN(Entry.n_desc);
} else {
- const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(DRI);
- BeginOffset = Entry->Value;
- SectionIndex = Entry->SectionIndex;
- if (!SectionIndex) {
- uint32_t flags = SymbolRef::SF_None;
- getSymbolFlags(DRI, flags);
- if (flags & SymbolRef::SF_Common)
- Result = Entry->Value;
- else
- Result = UnknownAddressOrSize;
- return object_error::success;
- }
- // Unfortunately symbols are unsorted so we need to touch all
- // symbols from load command
- DRI.d.b = 0;
- uint32_t Command = DRI.d.a;
- while (Command == DRI.d.a) {
- moveToNextSymbol(DRI);
- if (DRI.d.a < LoadCommandCount) {
- Entry = getSymbolTableEntry(DRI);
- if (Entry->SectionIndex == SectionIndex && Entry->Value > BeginOffset)
- if (!EndOffset || Entry->Value < EndOffset)
- EndOffset = Entry->Value;
- }
- DRI.d.b++;
- }
- }
- if (!EndOffset) {
- uint64_t Size;
- getSectionSize(Sections[SectionIndex-1], Size);
- getSectionAddress(Sections[SectionIndex-1], EndOffset);
- EndOffset += Size;
+ Result = 0;
}
- Result = EndOffset - BeginOffset;
return object_error::success;
}
-error_code MachOObjectFile::getSymbolNMTypeChar(DataRefImpl DRI,
- char &Result) const {
- uint8_t Type, Flags;
- if (is64Bit()) {
- const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(DRI);
- Type = Entry->Type;
- Flags = Entry->Flags;
- } else {
- const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(DRI);
- Type = Entry->Type;
- Flags = Entry->Flags;
- }
+std::error_code MachOObjectFile::getSymbolSize(DataRefImpl DRI,
+ uint64_t &Result) const {
+ uint64_t BeginOffset;
+ uint64_t EndOffset = 0;
+ uint8_t SectionIndex;
- char Char;
- switch (Type & macho::STF_TypeMask) {
- case macho::STT_Undefined:
- Char = 'u';
- break;
- case macho::STT_Absolute:
- case macho::STT_Section:
- Char = 's';
- break;
- default:
- Char = '?';
- break;
+ nlist_base Entry = getSymbolTableEntryBase(this, DRI);
+ uint64_t Value;
+ getSymbolAddress(DRI, Value);
+ if (Value == UnknownAddressOrSize) {
+ Result = UnknownAddressOrSize;
+ return object_error::success;
}
- if (Flags & (macho::STF_External | macho::STF_PrivateExtern))
- Char = toupper(static_cast<unsigned char>(Char));
- Result = Char;
- return object_error::success;
-}
+ BeginOffset = Value;
-error_code MachOObjectFile::getSymbolFlags(DataRefImpl DRI,
- uint32_t &Result) const {
- uint16_t MachOFlags;
- uint8_t MachOType;
- if (is64Bit()) {
- const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(DRI);
- MachOFlags = Entry->Flags;
- MachOType = Entry->Type;
- } else {
- const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(DRI);
- MachOFlags = Entry->Flags;
- MachOType = Entry->Type;
+ SectionIndex = Entry.n_sect;
+ if (!SectionIndex) {
+ uint32_t flags = getSymbolFlags(DRI);
+ if (flags & SymbolRef::SF_Common)
+ Result = Value;
+ else
+ Result = UnknownAddressOrSize;
+ return object_error::success;
}
-
- // TODO: Correctly set SF_ThreadLocal
- Result = SymbolRef::SF_None;
-
- if ((MachOType & MachO::NlistMaskType) == MachO::NListTypeUndefined)
- Result |= SymbolRef::SF_Undefined;
-
- if (MachOFlags & macho::STF_StabsEntryMask)
- Result |= SymbolRef::SF_FormatSpecific;
-
- if (MachOType & MachO::NlistMaskExternal) {
- Result |= SymbolRef::SF_Global;
- if ((MachOType & MachO::NlistMaskType) == MachO::NListTypeUndefined)
- Result |= SymbolRef::SF_Common;
+ // Unfortunately symbols are unsorted so we need to touch all
+ // symbols from load command
+ for (const SymbolRef &Symbol : symbols()) {
+ 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;
}
-
- if (MachOFlags & (MachO::NListDescWeakRef | MachO::NListDescWeakDef))
- Result |= SymbolRef::SF_Weak;
-
- if ((MachOType & MachO::NlistMaskType) == MachO::NListTypeAbsolute)
- Result |= SymbolRef::SF_Absolute;
-
- return object_error::success;
-}
-
-error_code MachOObjectFile::getSymbolSection(DataRefImpl Symb,
- section_iterator &Res) const {
- uint8_t index;
- if (is64Bit()) {
- const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(Symb);
- index = Entry->SectionIndex;
- } else {
- const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(Symb);
- index = Entry->SectionIndex;
+ if (!EndOffset) {
+ uint64_t Size;
+ DataRefImpl Sec;
+ Sec.d.a = SectionIndex-1;
+ getSectionSize(Sec, Size);
+ getSectionAddress(Sec, EndOffset);
+ EndOffset += Size;
}
-
- if (index == 0)
- Res = end_sections();
- else
- Res = section_iterator(SectionRef(Sections[index-1], this));
-
+ Result = EndOffset - BeginOffset;
return object_error::success;
}
-error_code MachOObjectFile::getSymbolType(DataRefImpl Symb,
- SymbolRef::Type &Res) const {
- uint8_t n_type;
- if (is64Bit()) {
- const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(Symb);
- n_type = Entry->Type;
- } else {
- const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(Symb);
- n_type = Entry->Type;
- }
+std::error_code MachOObjectFile::getSymbolType(DataRefImpl Symb,
+ SymbolRef::Type &Res) const {
+ nlist_base Entry = getSymbolTableEntryBase(this, Symb);
+ uint8_t n_type = Entry.n_type;
+
Res = SymbolRef::ST_Other;
// If this is a STAB debugging symbol, we can do nothing more.
- if (n_type & MachO::NlistMaskStab) {
+ if (n_type & MachO::N_STAB) {
Res = SymbolRef::ST_Debug;
return object_error::success;
}
- switch (n_type & MachO::NlistMaskType) {
- case MachO::NListTypeUndefined :
+ switch (n_type & MachO::N_TYPE) {
+ case MachO::N_UNDF :
Res = SymbolRef::ST_Unknown;
break;
- case MachO::NListTypeSection :
+ case MachO::N_SECT :
Res = SymbolRef::ST_Function;
break;
}
return object_error::success;
}
-error_code MachOObjectFile::getSymbolValue(DataRefImpl Symb,
- uint64_t &Val) const {
- report_fatal_error("getSymbolValue unimplemented in MachOObjectFile");
-}
-
-symbol_iterator MachOObjectFile::begin_symbols() const {
- // DRI.d.a = segment number; DRI.d.b = symbol index.
- DataRefImpl DRI;
- moveToNextSymbol(DRI);
- return symbol_iterator(SymbolRef(DRI, this));
-}
-
-symbol_iterator MachOObjectFile::end_symbols() const {
- DataRefImpl DRI;
- DRI.d.a = getHeader()->NumLoadCommands;
- return symbol_iterator(SymbolRef(DRI, this));
-}
+uint32_t MachOObjectFile::getSymbolFlags(DataRefImpl DRI) const {
+ nlist_base Entry = getSymbolTableEntryBase(this, DRI);
-symbol_iterator MachOObjectFile::begin_dynamic_symbols() const {
- // TODO: implement
- report_fatal_error("Dynamic symbols unimplemented in MachOObjectFile");
-}
+ uint8_t MachOType = Entry.n_type;
+ uint16_t MachOFlags = Entry.n_desc;
-symbol_iterator MachOObjectFile::end_dynamic_symbols() const {
- // TODO: implement
- report_fatal_error("Dynamic symbols unimplemented in MachOObjectFile");
-}
+ uint32_t Result = SymbolRef::SF_None;
-library_iterator MachOObjectFile::begin_libraries_needed() const {
- // TODO: implement
- report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
-}
+ if ((MachOType & MachO::N_TYPE) == MachO::N_UNDF)
+ Result |= SymbolRef::SF_Undefined;
-library_iterator MachOObjectFile::end_libraries_needed() const {
- // TODO: implement
- report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
-}
+ if ((MachOType & MachO::N_TYPE) == MachO::N_INDR)
+ Result |= SymbolRef::SF_Indirect;
-StringRef MachOObjectFile::getLoadName() const {
- // TODO: Implement
- report_fatal_error("get_load_name() unimplemented in MachOObjectFile");
-}
+ if (MachOType & MachO::N_STAB)
+ Result |= SymbolRef::SF_FormatSpecific;
-/*===-- Sections ----------------------------------------------------------===*/
-
-void MachOObjectFile::moveToNextSection(DataRefImpl &DRI) const {
- uint32_t LoadCommandCount = getHeader()->NumLoadCommands;
- while (DRI.d.a < LoadCommandCount) {
- const MachOFormat::LoadCommand *Command = getLoadCommandInfo(DRI.d.a);
- if (Command->Type == macho::LCT_Segment) {
- const MachOFormat::SegmentLoadCommand *SegmentLoadCmd =
- reinterpret_cast<const MachOFormat::SegmentLoadCommand*>(Command);
- if (DRI.d.b < SegmentLoadCmd->NumSections)
- return;
- } else if (Command->Type == macho::LCT_Segment64) {
- const MachOFormat::Segment64LoadCommand *Segment64LoadCmd =
- reinterpret_cast<const MachOFormat::Segment64LoadCommand*>(Command);
- if (DRI.d.b < Segment64LoadCmd->NumSections)
- return;
+ if (MachOType & MachO::N_EXT) {
+ Result |= SymbolRef::SF_Global;
+ if ((MachOType & MachO::N_TYPE) == MachO::N_UNDF) {
+ uint64_t Value;
+ getSymbolAddress(DRI, Value);
+ if (Value && Value != UnknownAddressOrSize)
+ Result |= SymbolRef::SF_Common;
}
-
- DRI.d.a++;
- DRI.d.b = 0;
}
-}
-error_code MachOObjectFile::getSectionNext(DataRefImpl DRI,
- SectionRef &Result) const {
- DRI.d.b++;
- moveToNextSection(DRI);
- Result = SectionRef(DRI, this);
- return object_error::success;
-}
-
-static bool is64BitLoadCommand(const MachOObjectFile *MachOObj,
- DataRefImpl DRI) {
- const MachOFormat::LoadCommand *Command =
- MachOObj->getLoadCommandInfo(DRI.d.a);
- if (Command->Type == macho::LCT_Segment64)
- return true;
- assert(Command->Type == macho::LCT_Segment && "Unexpected Type.");
- return false;
-}
-
-const MachOFormat::Section *MachOObjectFile::getSection(DataRefImpl DRI) const {
- assert(!is64BitLoadCommand(this, DRI));
- const MachOFormat::LoadCommand *Command = getLoadCommandInfo(DRI.d.a);
- uintptr_t CommandAddr = reinterpret_cast<uintptr_t>(Command);
- uintptr_t SectionAddr = CommandAddr + sizeof(macho::SegmentLoadCommand) +
- DRI.d.b * sizeof(MachOFormat::Section);
- return reinterpret_cast<const MachOFormat::Section*>(SectionAddr);
-}
+ if (MachOFlags & (MachO::N_WEAK_REF | MachO::N_WEAK_DEF))
+ Result |= SymbolRef::SF_Weak;
-std::size_t MachOObjectFile::getSectionIndex(DataRefImpl Sec) const {
- SectionList::const_iterator loc =
- std::find(Sections.begin(), Sections.end(), Sec);
- assert(loc != Sections.end() && "Sec is not a valid section!");
- return std::distance(Sections.begin(), loc);
-}
+ if ((MachOType & MachO::N_TYPE) == MachO::N_ABS)
+ Result |= SymbolRef::SF_Absolute;
-const MachOFormat::Section64 *
-MachOObjectFile::getSection64(DataRefImpl DRI) const {
- assert(is64BitLoadCommand(this, DRI));
- const MachOFormat::LoadCommand *Command = getLoadCommandInfo(DRI.d.a);
- uintptr_t CommandAddr = reinterpret_cast<uintptr_t>(Command);
- uintptr_t SectionAddr = CommandAddr + sizeof(macho::Segment64LoadCommand) +
- DRI.d.b * sizeof(MachOFormat::Section64);
- return reinterpret_cast<const MachOFormat::Section64*>(SectionAddr);
+ return Result;
}
-static StringRef parseSegmentOrSectionName(const char *P) {
- if (P[15] == 0)
- // Null terminated.
- return P;
- // Not null terminated, so this is a 16 char string.
- return StringRef(P, 16);
-}
+std::error_code MachOObjectFile::getSymbolSection(DataRefImpl Symb,
+ section_iterator &Res) const {
+ nlist_base Entry = getSymbolTableEntryBase(this, Symb);
+ uint8_t index = Entry.n_sect;
-ArrayRef<char> MachOObjectFile::getSectionRawName(DataRefImpl DRI) const {
- if (is64BitLoadCommand(this, DRI)) {
- const MachOFormat::Section64 *sec = getSection64(DRI);
- return ArrayRef<char>(sec->Name);
+ if (index == 0) {
+ Res = section_end();
} else {
- const MachOFormat::Section *sec = getSection(DRI);
- return ArrayRef<char>(sec->Name);
+ DataRefImpl DRI;
+ DRI.d.a = index - 1;
+ Res = section_iterator(SectionRef(DRI, this));
}
-}
-error_code MachOObjectFile::getSectionName(DataRefImpl DRI,
- StringRef &Result) const {
- ArrayRef<char> Raw = getSectionRawName(DRI);
- Result = parseSegmentOrSectionName(Raw.data());
return object_error::success;
}
-ArrayRef<char>
-MachOObjectFile::getSectionRawFinalSegmentName(DataRefImpl Sec) const {
- if (is64BitLoadCommand(this, Sec)) {
- const MachOFormat::Section64 *sec = getSection64(Sec);
- return ArrayRef<char>(sec->SegmentName, 16);
- } else {
- const MachOFormat::Section *sec = getSection(Sec);
- return ArrayRef<char>(sec->SegmentName);
- }
+void MachOObjectFile::moveSectionNext(DataRefImpl &Sec) const {
+ Sec.d.a++;
}
-StringRef MachOObjectFile::getSectionFinalSegmentName(DataRefImpl DRI) const {
- ArrayRef<char> Raw = getSectionRawFinalSegmentName(DRI);
- return parseSegmentOrSectionName(Raw.data());
+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 DRI,
- uint64_t &Result) const {
- if (is64BitLoadCommand(this, DRI)) {
- const MachOFormat::Section64 *Sect = getSection64(DRI);
- Result = Sect->Address;
+std::error_code MachOObjectFile::getSectionAddress(DataRefImpl Sec,
+ uint64_t &Res) const {
+ if (is64Bit()) {
+ MachO::section_64 Sect = getSection64(Sec);
+ Res = Sect.addr;
} else {
- const MachOFormat::Section *Sect = getSection(DRI);
- Result = Sect->Address;
+ MachO::section Sect = getSection(Sec);
+ Res = Sect.addr;
}
return object_error::success;
}
-error_code MachOObjectFile::getSectionSize(DataRefImpl DRI,
- uint64_t &Result) const {
- if (is64BitLoadCommand(this, DRI)) {
- const MachOFormat::Section64 *Sect = getSection64(DRI);
- Result = Sect->Size;
+std::error_code MachOObjectFile::getSectionSize(DataRefImpl Sec,
+ uint64_t &Res) const {
+ if (is64Bit()) {
+ MachO::section_64 Sect = getSection64(Sec);
+ Res = Sect.size;
} else {
- const MachOFormat::Section *Sect = getSection(DRI);
- Result = Sect->Size;
+ MachO::section Sect = getSection(Sec);
+ Res = Sect.size;
}
+
return object_error::success;
}
-error_code MachOObjectFile::getSectionContents(DataRefImpl DRI,
- StringRef &Result) const {
- if (is64BitLoadCommand(this, DRI)) {
- const MachOFormat::Section64 *Sect = getSection64(DRI);
- Result = getData(Sect->Offset, Sect->Size);
+std::error_code MachOObjectFile::getSectionContents(DataRefImpl Sec,
+ StringRef &Res) const {
+ uint32_t Offset;
+ uint64_t Size;
+
+ if (is64Bit()) {
+ MachO::section_64 Sect = getSection64(Sec);
+ Offset = Sect.offset;
+ Size = Sect.size;
} else {
- const MachOFormat::Section *Sect = getSection(DRI);
- Result = getData(Sect->Offset, Sect->Size);
+ MachO::section Sect = getSection(Sec);
+ Offset = Sect.offset;
+ Size = Sect.size;
}
+
+ Res = this->getData().substr(Offset, Size);
return object_error::success;
}
-error_code MachOObjectFile::getSectionAlignment(DataRefImpl DRI,
- uint64_t &Result) const {
- if (is64BitLoadCommand(this, DRI)) {
- const MachOFormat::Section64 *Sect = getSection64(DRI);
- Result = uint64_t(1) << Sect->Align;
+std::error_code MachOObjectFile::getSectionAlignment(DataRefImpl Sec,
+ uint64_t &Res) const {
+ uint32_t Align;
+ if (is64Bit()) {
+ MachO::section_64 Sect = getSection64(Sec);
+ Align = Sect.align;
} else {
- const MachOFormat::Section *Sect = getSection(DRI);
- Result = uint64_t(1) << Sect->Align;
+ MachO::section Sect = getSection(Sec);
+ Align = Sect.align;
}
+
+ Res = uint64_t(1) << Align;
return object_error::success;
}
-error_code MachOObjectFile::isSectionText(DataRefImpl DRI,
- bool &Result) const {
- if (is64BitLoadCommand(this, DRI)) {
- const MachOFormat::Section64 *Sect = getSection64(DRI);
- Result = Sect->Flags & macho::SF_PureInstructions;
- } else {
- const MachOFormat::Section *Sect = getSection(DRI);
- Result = Sect->Flags & macho::SF_PureInstructions;
- }
+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 MachOObjectFile::isSectionRequiredForExecution(DataRefImpl Sec,
- bool &Result) const {
+std::error_code
+MachOObjectFile::isSectionRequiredForExecution(DataRefImpl Sec,
+ bool &Result) const {
// FIXME: Unimplemented.
Result = true;
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 DRI,
- bool &Result) const {
- if (is64Bit()) {
- const MachOFormat::Section64 *Sect = getSection64(DRI);
- unsigned SectionType = Sect->Flags & MachO::SectionFlagMaskSectionType;
- Result = (SectionType == MachO::SectionTypeZeroFill ||
- SectionType == MachO::SectionTypeZeroFillLarge);
- } else {
- const MachOFormat::Section *Sect = getSection(DRI);
- unsigned SectionType = Sect->Flags & MachO::SectionFlagMaskSectionType;
- Result = (SectionType == MachO::SectionTypeZeroFill ||
- SectionType == MachO::SectionTypeZeroFillLarge);
- }
-
+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 ||
+ SectionType == MachO::S_GB_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;
- getSymbolType(Symb, ST);
+ this->getSymbolType(Symb, ST);
if (ST == SymbolRef::ST_Unknown) {
Result = false;
return object_error::success;
getSectionSize(Sec, SectEnd);
SectEnd += SectBegin;
- if (is64Bit()) {
- const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(Symb);
- uint64_t SymAddr= Entry->Value;
- Result = (SymAddr >= SectBegin) && (SymAddr < SectEnd);
- } else {
- const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(Symb);
- uint64_t SymAddr= Entry->Value;
- Result = (SymAddr >= SectBegin) && (SymAddr < SectEnd);
- }
+ uint64_t SymAddr;
+ getSymbolAddress(Symb, SymAddr);
+ Result = (SymAddr >= SectBegin) && (SymAddr < SectEnd);
return object_error::success;
}
-relocation_iterator MachOObjectFile::getSectionRelBegin(DataRefImpl Sec) const {
- DataRefImpl ret;
- ret.d.b = getSectionIndex(Sec);
- return relocation_iterator(RelocationRef(ret, this));
-}
-relocation_iterator MachOObjectFile::getSectionRelEnd(DataRefImpl Sec) const {
- uint32_t last_reloc;
- if (is64BitLoadCommand(this, Sec)) {
- const MachOFormat::Section64 *Sect = getSection64(Sec);
- last_reloc = Sect->NumRelocationTableEntries;
- } else {
- const MachOFormat::Section *Sect = getSection(Sec);
- last_reloc = Sect->NumRelocationTableEntries;
- }
- DataRefImpl ret;
- ret.d.a = last_reloc;
- ret.d.b = getSectionIndex(Sec);
- return relocation_iterator(RelocationRef(ret, this));
-}
-
-section_iterator MachOObjectFile::begin_sections() const {
- DataRefImpl DRI;
- moveToNextSection(DRI);
- return section_iterator(SectionRef(DRI, this));
-}
-
-section_iterator MachOObjectFile::end_sections() const {
- DataRefImpl DRI;
- DRI.d.a = getHeader()->NumLoadCommands;
- return section_iterator(SectionRef(DRI, this));
+relocation_iterator MachOObjectFile::section_rel_begin(DataRefImpl Sec) const {
+ DataRefImpl Ret;
+ Ret.d.a = Sec.d.a;
+ Ret.d.b = 0;
+ return relocation_iterator(RelocationRef(Ret, this));
}
-/*===-- Relocations -------------------------------------------------------===*/
-
-const MachOFormat::RelocationEntry *
-MachOObjectFile::getRelocation(DataRefImpl Rel) const {
- uint32_t relOffset;
+relocation_iterator
+MachOObjectFile::section_rel_end(DataRefImpl Sec) const {
+ uint32_t Num;
if (is64Bit()) {
- const MachOFormat::Section64 *Sect = getSection64(Sections[Rel.d.b]);
- relOffset = Sect->RelocationTableOffset;
+ MachO::section_64 Sect = getSection64(Sec);
+ Num = Sect.nreloc;
} else {
- const MachOFormat::Section *Sect = getSection(Sections[Rel.d.b]);
- relOffset = Sect->RelocationTableOffset;
+ MachO::section Sect = getSection(Sec);
+ Num = Sect.nreloc;
}
- uint64_t Offset = relOffset + Rel.d.a * sizeof(MachOFormat::RelocationEntry);
- StringRef Data = getData(Offset, sizeof(MachOFormat::RelocationEntry));
- return reinterpret_cast<const MachOFormat::RelocationEntry*>(Data.data());
+
+ DataRefImpl Ret;
+ Ret.d.a = Sec.d.a;
+ Ret.d.b = Num;
+ return relocation_iterator(RelocationRef(Ret, this));
}
-error_code MachOObjectFile::getRelocationNext(DataRefImpl Rel,
- RelocationRef &Res) const {
- ++Rel.d.a;
- Res = RelocationRef(Rel, this);
- return object_error::success;
+void MachOObjectFile::moveRelocationNext(DataRefImpl &Rel) const {
+ ++Rel.d.b;
}
-error_code MachOObjectFile::getRelocationAddress(DataRefImpl Rel,
- uint64_t &Res) const {
- const uint8_t* sectAddress = 0;
- if (is64Bit()) {
- const MachOFormat::Section64 *Sect = getSection64(Sections[Rel.d.b]);
- sectAddress += Sect->Address;
- } else {
- const MachOFormat::Section *Sect = getSection(Sections[Rel.d.b]);
- sectAddress += Sect->Address;
- }
- const MachOFormat::RelocationEntry *RE = getRelocation(Rel);
- unsigned Arch = getArch();
- bool isScattered = (Arch != Triple::x86_64) &&
- (RE->Word0 & macho::RF_Scattered);
- uint64_t RelAddr = 0;
- if (isScattered)
- RelAddr = RE->Word0 & 0xFFFFFF;
- else
- RelAddr = RE->Word0;
+std::error_code MachOObjectFile::getRelocationAddress(DataRefImpl Rel,
+ uint64_t &Res) const {
+ uint64_t Offset;
+ getRelocationOffset(Rel, Offset);
- Res = reinterpret_cast<uintptr_t>(sectAddress + RelAddr);
+ 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 {
- const MachOFormat::RelocationEntry *RE = getRelocation(Rel);
- unsigned Arch = getArch();
- bool isScattered = (Arch != Triple::x86_64) &&
- (RE->Word0 & macho::RF_Scattered);
- if (isScattered)
- Res = RE->Word0 & 0xFFFFFF;
- else
- Res = RE->Word0;
+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;
}
-error_code MachOObjectFile::getRelocationSymbol(DataRefImpl Rel,
- SymbolRef &Res) const {
- const MachOFormat::RelocationEntry *RE = getRelocation(Rel);
- uint32_t SymbolIdx = RE->Word1 & 0xffffff;
- bool isExtern = (RE->Word1 >> 27) & 1;
+symbol_iterator
+MachOObjectFile::getRelocationSymbol(DataRefImpl Rel) const {
+ MachO::any_relocation_info RE = getRelocation(Rel);
+ uint32_t SymbolIdx = getPlainRelocationSymbolNum(RE);
+ bool isExtern = getPlainRelocationExternal(RE);
+ if (!isExtern)
+ return symbol_end();
+
+ MachO::symtab_command S = getSymtabLoadCommand();
+ unsigned SymbolTableEntrySize = is64Bit() ?
+ sizeof(MachO::nlist_64) :
+ sizeof(MachO::nlist);
+ uint64_t Offset = S.symoff + SymbolIdx * SymbolTableEntrySize;
DataRefImpl Sym;
- moveToNextSymbol(Sym);
- if (isExtern) {
- for (unsigned i = 0; i < SymbolIdx; i++) {
- Sym.d.b++;
- moveToNextSymbol(Sym);
- assert(Sym.d.a < getHeader()->NumLoadCommands &&
- "Relocation symbol index out of range!");
- }
- }
- Res = SymbolRef(Sym, this);
- return object_error::success;
+ Sym.p = reinterpret_cast<uintptr_t>(getPtr(this, Offset));
+ return symbol_iterator(SymbolRef(Sym, this));
}
-error_code MachOObjectFile::getRelocationType(DataRefImpl Rel,
- uint64_t &Res) const {
- const MachOFormat::RelocationEntry *RE = getRelocation(Rel);
- Res = RE->Word0;
- Res <<= 32;
- Res |= RE->Word1;
+
+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 MachOObjectFile::getRelocationTypeName(DataRefImpl Rel,
- SmallVectorImpl<char> &Result) const {
- // TODO: Support scattered relocations.
- StringRef res;
- const MachOFormat::RelocationEntry *RE = getRelocation(Rel);
- unsigned Arch = getArch();
- bool isScattered = (Arch != Triple::x86_64) &&
- (RE->Word0 & macho::RF_Scattered);
+std::error_code
+MachOObjectFile::getRelocationTypeName(DataRefImpl Rel,
+ SmallVectorImpl<char> &Result) const {
+ StringRef res;
+ uint64_t RType;
+ getRelocationType(Rel, RType);
- unsigned r_type;
- if (isScattered)
- r_type = (RE->Word0 >> 24) & 0xF;
- else
- r_type = (RE->Word1 >> 28) & 0xF;
+ unsigned Arch = this->getArch();
switch (Arch) {
case Triple::x86: {
"GENERIC_RELOC_LOCAL_SECTDIFF",
"GENERIC_RELOC_TLV" };
- if (r_type > 6)
+ if (RType > 5)
res = "Unknown";
else
- res = Table[r_type];
+ res = Table[RType];
break;
}
case Triple::x86_64: {
"X86_64_RELOC_SIGNED_4",
"X86_64_RELOC_TLV" };
- if (r_type > 9)
+ if (RType > 9)
res = "Unknown";
else
- res = Table[r_type];
+ res = Table[RType];
break;
}
case Triple::arm: {
"ARM_RELOC_HALF",
"ARM_RELOC_HALF_SECTDIFF" };
- if (r_type > 9)
+ if (RType > 9)
+ res = "Unknown";
+ else
+ res = Table[RType];
+ break;
+ }
+ case Triple::arm64:
+ case Triple::aarch64: {
+ static const char *const Table[] = {
+ "ARM64_RELOC_UNSIGNED", "ARM64_RELOC_SUBTRACTOR",
+ "ARM64_RELOC_BRANCH26", "ARM64_RELOC_PAGE21",
+ "ARM64_RELOC_PAGEOFF12", "ARM64_RELOC_GOT_LOAD_PAGE21",
+ "ARM64_RELOC_GOT_LOAD_PAGEOFF12", "ARM64_RELOC_POINTER_TO_GOT",
+ "ARM64_RELOC_TLVP_LOAD_PAGE21", "ARM64_RELOC_TLVP_LOAD_PAGEOFF12",
+ "ARM64_RELOC_ADDEND"
+ };
+
+ if (RType >= array_lengthof(Table))
res = "Unknown";
else
- res = Table[r_type];
+ res = Table[RType];
break;
}
case Triple::ppc: {
"PPC_RELOC_LO14_SECTDIFF",
"PPC_RELOC_LOCAL_SECTDIFF" };
- res = Table[r_type];
+ if (RType > 15)
+ res = "Unknown";
+ else
+ res = Table[RType];
break;
}
case Triple::UnknownArch:
Result.append(res.begin(), res.end());
return object_error::success;
}
-error_code MachOObjectFile::getRelocationAdditionalInfo(DataRefImpl Rel,
- int64_t &Res) const {
- const MachOFormat::RelocationEntry *RE = getRelocation(Rel);
- bool isExtern = (RE->Word1 >> 27) & 1;
- Res = 0;
- if (!isExtern) {
- const uint8_t* sectAddress = base();
- if (is64Bit()) {
- const MachOFormat::Section64 *Sect = getSection64(Sections[Rel.d.b]);
- sectAddress += Sect->Offset;
- } else {
- const MachOFormat::Section *Sect = getSection(Sections[Rel.d.b]);
- sectAddress += Sect->Offset;
- }
- Res = reinterpret_cast<uintptr_t>(sectAddress);
- }
- return object_error::success;
-}
-
-// Helper to advance a section or symbol iterator multiple increments at a time.
-template<class T>
-error_code advance(T &it, size_t Val) {
- error_code ec;
- while (Val--) {
- it.increment(ec);
- }
- return ec;
-}
-
-template<class T>
-void advanceTo(T &it, size_t Val) {
- if (error_code ec = advance(it, Val))
- report_fatal_error(ec.message());
-}
-
-void MachOObjectFile::printRelocationTargetName(
- const MachOFormat::RelocationEntry *RE,
- raw_string_ostream &fmt) const {
- unsigned Arch = getArch();
- bool isScattered = (Arch != Triple::x86_64) &&
- (RE->Word0 & macho::RF_Scattered);
-
- // Target of a scattered relocation is an address. In the interest of
- // generating pretty output, scan through the symbol table looking for a
- // symbol that aligns with that address. If we find one, print it.
- // Otherwise, we just print the hex address of the target.
- if (isScattered) {
- uint32_t Val = RE->Word1;
-
- error_code ec;
- for (symbol_iterator SI = begin_symbols(), SE = end_symbols(); SI != SE;
- SI.increment(ec)) {
- if (ec) report_fatal_error(ec.message());
- uint64_t Addr;
- StringRef Name;
-
- if ((ec = SI->getAddress(Addr)))
- report_fatal_error(ec.message());
- if (Addr != Val) continue;
- if ((ec = SI->getName(Name)))
- report_fatal_error(ec.message());
- fmt << Name;
- return;
- }
-
- // If we couldn't find a symbol that this relocation refers to, try
- // to find a section beginning instead.
- for (section_iterator SI = begin_sections(), SE = end_sections(); SI != SE;
- SI.increment(ec)) {
- if (ec) report_fatal_error(ec.message());
-
- uint64_t Addr;
- StringRef Name;
-
- if ((ec = SI->getAddress(Addr)))
- report_fatal_error(ec.message());
- if (Addr != Val) continue;
- if ((ec = SI->getName(Name)))
- report_fatal_error(ec.message());
- fmt << Name;
- return;
- }
-
- fmt << format("0x%x", Val);
- return;
- }
-
- StringRef S;
- bool isExtern = (RE->Word1 >> 27) & 1;
- uint32_t Val = RE->Word1 & 0xFFFFFF;
-
- if (isExtern) {
- symbol_iterator SI = begin_symbols();
- advanceTo(SI, Val);
- SI->getName(S);
- } else {
- section_iterator SI = begin_sections();
- advanceTo(SI, Val);
- SI->getName(S);
- }
-
- fmt << S;
-}
-
-error_code MachOObjectFile::getRelocationValueString(DataRefImpl Rel,
+std::error_code
+MachOObjectFile::getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const {
- const MachOFormat::RelocationEntry *RE = getRelocation(Rel);
+ MachO::any_relocation_info RE = getRelocation(Rel);
- unsigned Arch = getArch();
- bool isScattered = (Arch != Triple::x86_64) &&
- (RE->Word0 & macho::RF_Scattered);
+ unsigned Arch = this->getArch();
std::string fmtbuf;
raw_string_ostream fmt(fmtbuf);
-
- unsigned Type;
- if (isScattered)
- Type = (RE->Word0 >> 24) & 0xF;
- else
- Type = (RE->Word1 >> 28) & 0xF;
-
- bool isPCRel;
- if (isScattered)
- isPCRel = ((RE->Word0 >> 30) & 1);
- else
- isPCRel = ((RE->Word1 >> 24) & 1);
+ unsigned Type = this->getAnyRelocationType(RE);
+ bool IsPCRel = this->getAnyRelocationPCRel(RE);
// Determine any addends that should be displayed with the relocation.
// These require decoding the relocation type, which is triple-specific.
// X86_64 has entirely custom relocation types.
if (Arch == Triple::x86_64) {
- bool isPCRel = ((RE->Word1 >> 24) & 1);
+ bool isPCRel = getAnyRelocationPCRel(RE);
switch (Type) {
- case macho::RIT_X86_64_GOTLoad: // X86_64_RELOC_GOT_LOAD
- case macho::RIT_X86_64_GOT: { // X86_64_RELOC_GOT
- printRelocationTargetName(RE, fmt);
+ case MachO::X86_64_RELOC_GOT_LOAD:
+ case MachO::X86_64_RELOC_GOT: {
+ printRelocationTargetName(this, RE, fmt);
fmt << "@GOT";
if (isPCRel) fmt << "PCREL";
break;
}
- case macho::RIT_X86_64_Subtractor: { // X86_64_RELOC_SUBTRACTOR
+ case MachO::X86_64_RELOC_SUBTRACTOR: {
DataRefImpl RelNext = Rel;
- RelNext.d.a++;
- const MachOFormat::RelocationEntry *RENext = getRelocation(RelNext);
+ moveRelocationNext(RelNext);
+ MachO::any_relocation_info RENext = getRelocation(RelNext);
- // X86_64_SUBTRACTOR must be followed by a relocation of type
+ // X86_64_RELOC_SUBTRACTOR must be followed by a relocation of type
// X86_64_RELOC_UNSIGNED.
// NOTE: Scattered relocations don't exist on x86_64.
- unsigned RType = (RENext->Word1 >> 28) & 0xF;
- if (RType != 0)
+ unsigned RType = getAnyRelocationType(RENext);
+ if (RType != MachO::X86_64_RELOC_UNSIGNED)
report_fatal_error("Expected X86_64_RELOC_UNSIGNED after "
"X86_64_RELOC_SUBTRACTOR.");
- // The X86_64_RELOC_UNSIGNED contains the minuend symbol,
- // X86_64_SUBTRACTOR contains to the subtrahend.
- printRelocationTargetName(RENext, fmt);
+ // The X86_64_RELOC_UNSIGNED contains the minuend symbol;
+ // X86_64_RELOC_SUBTRACTOR contains the subtrahend.
+ printRelocationTargetName(this, RENext, fmt);
fmt << "-";
- printRelocationTargetName(RE, fmt);
+ printRelocationTargetName(this, RE, fmt);
break;
}
- case macho::RIT_X86_64_TLV:
- printRelocationTargetName(RE, fmt);
+ case MachO::X86_64_RELOC_TLV:
+ printRelocationTargetName(this, RE, fmt);
fmt << "@TLV";
if (isPCRel) fmt << "P";
break;
- case macho::RIT_X86_64_Signed1: // X86_64_RELOC_SIGNED1
- printRelocationTargetName(RE, fmt);
+ case MachO::X86_64_RELOC_SIGNED_1:
+ printRelocationTargetName(this, RE, fmt);
fmt << "-1";
break;
- case macho::RIT_X86_64_Signed2: // X86_64_RELOC_SIGNED2
- printRelocationTargetName(RE, fmt);
+ case MachO::X86_64_RELOC_SIGNED_2:
+ printRelocationTargetName(this, RE, fmt);
fmt << "-2";
break;
- case macho::RIT_X86_64_Signed4: // X86_64_RELOC_SIGNED4
- printRelocationTargetName(RE, fmt);
+ case MachO::X86_64_RELOC_SIGNED_4:
+ printRelocationTargetName(this, RE, fmt);
fmt << "-4";
break;
default:
- printRelocationTargetName(RE, fmt);
+ printRelocationTargetName(this, RE, fmt);
break;
}
// X86 and ARM share some relocation types in common.
- } else if (Arch == Triple::x86 || Arch == Triple::arm) {
+ } else if (Arch == Triple::x86 || Arch == Triple::arm ||
+ Arch == Triple::ppc) {
// Generic relocation types...
switch (Type) {
- case macho::RIT_Pair: // GENERIC_RELOC_PAIR - prints no info
+ case MachO::GENERIC_RELOC_PAIR: // prints no info
return object_error::success;
- case macho::RIT_Difference: { // GENERIC_RELOC_SECTDIFF
+ case MachO::GENERIC_RELOC_SECTDIFF: {
DataRefImpl RelNext = Rel;
- RelNext.d.a++;
- const MachOFormat::RelocationEntry *RENext = getRelocation(RelNext);
+ moveRelocationNext(RelNext);
+ MachO::any_relocation_info RENext = getRelocation(RelNext);
// X86 sect diff's must be followed by a relocation of type
// GENERIC_RELOC_PAIR.
- bool isNextScattered = (Arch != Triple::x86_64) &&
- (RENext->Word0 & macho::RF_Scattered);
- unsigned RType;
- if (isNextScattered)
- RType = (RENext->Word0 >> 24) & 0xF;
- else
- RType = (RENext->Word1 >> 28) & 0xF;
- if (RType != 1)
+ unsigned RType = getAnyRelocationType(RENext);
+
+ if (RType != MachO::GENERIC_RELOC_PAIR)
report_fatal_error("Expected GENERIC_RELOC_PAIR after "
"GENERIC_RELOC_SECTDIFF.");
- printRelocationTargetName(RE, fmt);
+ printRelocationTargetName(this, RE, fmt);
fmt << "-";
- printRelocationTargetName(RENext, fmt);
+ printRelocationTargetName(this, RENext, fmt);
break;
}
}
- if (Arch == Triple::x86) {
- // All X86 relocations that need special printing were already
- // handled in the generic code.
+ if (Arch == Triple::x86 || Arch == Triple::ppc) {
switch (Type) {
- case macho::RIT_Generic_LocalDifference:{// GENERIC_RELOC_LOCAL_SECTDIFF
+ case MachO::GENERIC_RELOC_LOCAL_SECTDIFF: {
DataRefImpl RelNext = Rel;
- RelNext.d.a++;
- const MachOFormat::RelocationEntry *RENext = getRelocation(RelNext);
+ moveRelocationNext(RelNext);
+ MachO::any_relocation_info RENext = getRelocation(RelNext);
// X86 sect diff's must be followed by a relocation of type
// GENERIC_RELOC_PAIR.
- bool isNextScattered = (Arch != Triple::x86_64) &&
- (RENext->Word0 & macho::RF_Scattered);
- unsigned RType;
- if (isNextScattered)
- RType = (RENext->Word0 >> 24) & 0xF;
- else
- RType = (RENext->Word1 >> 28) & 0xF;
- if (RType != 1)
+ unsigned RType = getAnyRelocationType(RENext);
+ if (RType != MachO::GENERIC_RELOC_PAIR)
report_fatal_error("Expected GENERIC_RELOC_PAIR after "
"GENERIC_RELOC_LOCAL_SECTDIFF.");
- printRelocationTargetName(RE, fmt);
+ printRelocationTargetName(this, RE, fmt);
fmt << "-";
- printRelocationTargetName(RENext, fmt);
+ printRelocationTargetName(this, RENext, fmt);
break;
}
- case macho::RIT_Generic_TLV: {
- printRelocationTargetName(RE, fmt);
+ case MachO::GENERIC_RELOC_TLV: {
+ printRelocationTargetName(this, RE, fmt);
fmt << "@TLV";
- if (isPCRel) fmt << "P";
+ if (IsPCRel) fmt << "P";
break;
}
default:
- printRelocationTargetName(RE, fmt);
+ printRelocationTargetName(this, RE, fmt);
}
} else { // ARM-specific relocations
switch (Type) {
- case macho::RIT_ARM_Half: // ARM_RELOC_HALF
- case macho::RIT_ARM_HalfDifference: { // ARM_RELOC_HALF_SECTDIFF
+ case MachO::ARM_RELOC_HALF:
+ case MachO::ARM_RELOC_HALF_SECTDIFF: {
// Half relocations steal a bit from the length field to encode
// whether this is an upper16 or a lower16 relocation.
- bool isUpper;
- if (isScattered)
- isUpper = (RE->Word0 >> 28) & 1;
- else
- isUpper = (RE->Word1 >> 25) & 1;
+ bool isUpper = getAnyRelocationLength(RE) >> 1;
if (isUpper)
fmt << ":upper16:(";
else
fmt << ":lower16:(";
- printRelocationTargetName(RE, fmt);
+ printRelocationTargetName(this, RE, fmt);
DataRefImpl RelNext = Rel;
- RelNext.d.a++;
- const MachOFormat::RelocationEntry *RENext = getRelocation(RelNext);
+ moveRelocationNext(RelNext);
+ MachO::any_relocation_info RENext = getRelocation(RelNext);
// ARM half relocs must be followed by a relocation of type
// ARM_RELOC_PAIR.
- bool isNextScattered = (Arch != Triple::x86_64) &&
- (RENext->Word0 & macho::RF_Scattered);
- unsigned RType;
- if (isNextScattered)
- RType = (RENext->Word0 >> 24) & 0xF;
- else
- RType = (RENext->Word1 >> 28) & 0xF;
-
- if (RType != 1)
+ unsigned RType = getAnyRelocationType(RENext);
+ if (RType != MachO::ARM_RELOC_PAIR)
report_fatal_error("Expected ARM_RELOC_PAIR after "
- "GENERIC_RELOC_HALF");
+ "ARM_RELOC_HALF");
// NOTE: The half of the target virtual address is stashed in the
// address field of the secondary relocation, but we can't reverse
// ARM_RELOC_HALF_SECTDIFF encodes the second section in the
// symbol/section pointer of the follow-on relocation.
- if (Type == macho::RIT_ARM_HalfDifference) {
+ if (Type == MachO::ARM_RELOC_HALF_SECTDIFF) {
fmt << "-";
- printRelocationTargetName(RENext, fmt);
+ printRelocationTargetName(this, RENext, fmt);
}
fmt << ")";
break;
}
default: {
- printRelocationTargetName(RE, fmt);
+ printRelocationTargetName(this, RE, fmt);
}
}
}
} else
- printRelocationTargetName(RE, fmt);
+ printRelocationTargetName(this, RE, fmt);
fmt.flush();
Result.append(fmtbuf.begin(), fmtbuf.end());
return object_error::success;
}
-error_code MachOObjectFile::getRelocationHidden(DataRefImpl Rel,
- bool &Result) const {
- const MachOFormat::RelocationEntry *RE = getRelocation(Rel);
-
+std::error_code MachOObjectFile::getRelocationHidden(DataRefImpl Rel,
+ bool &Result) const {
unsigned Arch = getArch();
- bool isScattered = (Arch != Triple::x86_64) &&
- (RE->Word0 & macho::RF_Scattered);
- unsigned Type;
- if (isScattered)
- Type = (RE->Word0 >> 24) & 0xF;
- else
- Type = (RE->Word1 >> 28) & 0xF;
+ uint64_t Type;
+ getRelocationType(Rel, Type);
Result = false;
// On arches that use the generic relocations, GENERIC_RELOC_PAIR
// is always hidden.
- if (Arch == Triple::x86 || Arch == Triple::arm) {
- if (Type == macho::RIT_Pair) Result = true;
+ if (Arch == Triple::x86 || Arch == Triple::arm || Arch == Triple::ppc) {
+ if (Type == MachO::GENERIC_RELOC_PAIR) Result = true;
} else if (Arch == Triple::x86_64) {
// On x86_64, X86_64_RELOC_UNSIGNED is hidden only when it follows
- // an X864_64_RELOC_SUBTRACTOR.
- if (Type == macho::RIT_X86_64_Unsigned && Rel.d.a > 0) {
+ // an X86_64_RELOC_SUBTRACTOR.
+ if (Type == MachO::X86_64_RELOC_UNSIGNED && Rel.d.a > 0) {
DataRefImpl RelPrev = Rel;
RelPrev.d.a--;
- const MachOFormat::RelocationEntry *REPrev = getRelocation(RelPrev);
-
- unsigned PrevType = (REPrev->Word1 >> 28) & 0xF;
-
- if (PrevType == macho::RIT_X86_64_Subtractor) Result = true;
+ uint64_t PrevType;
+ getRelocationType(RelPrev, PrevType);
+ if (PrevType == MachO::X86_64_RELOC_SUBTRACTOR)
+ Result = true;
}
}
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");
}
+//
+// 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;
+}
+
+// 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;
+ }
+ 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);
+ }
+ }
-/*===-- Miscellaneous -----------------------------------------------------===*/
+ 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 {
+ DataRefImpl DRI;
+ if (!SymtabLoadCmd)
+ return basic_symbol_iterator(SymbolRef(DRI, this));
+
+ MachO::symtab_command Symtab = getSymtabLoadCommand();
+ unsigned SymbolTableEntrySize = is64Bit() ?
+ sizeof(MachO::nlist_64) :
+ sizeof(MachO::nlist);
+ unsigned Offset = Symtab.symoff +
+ Symtab.nsyms * SymbolTableEntrySize;
+ DRI.p = reinterpret_cast<uintptr_t>(getPtr(this, Offset));
+ 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));
+}
+
+section_iterator MachOObjectFile::section_end() const {
+ DataRefImpl DRI;
+ DRI.d.a = Sections.size();
+ 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;
}
StringRef MachOObjectFile::getFileFormatName() const {
+ unsigned CPUType = getCPUType(this);
if (!is64Bit()) {
- switch (getHeader()->CPUType) {
- case llvm::MachO::CPUTypeI386:
+ switch (CPUType) {
+ case llvm::MachO::CPU_TYPE_I386:
return "Mach-O 32-bit i386";
- case llvm::MachO::CPUTypeARM:
+ case llvm::MachO::CPU_TYPE_ARM:
return "Mach-O arm";
- case llvm::MachO::CPUTypePowerPC:
+ case llvm::MachO::CPU_TYPE_POWERPC:
return "Mach-O 32-bit ppc";
default:
- assert((getHeader()->CPUType & llvm::MachO::CPUArchABI64) == 0 &&
+ assert((CPUType & llvm::MachO::CPU_ARCH_ABI64) == 0 &&
"64-bit object file when we're not 64-bit?");
return "Mach-O 32-bit unknown";
}
}
// Make sure the cpu type has the correct mask.
- assert((getHeader()->CPUType & llvm::MachO::CPUArchABI64)
- == llvm::MachO::CPUArchABI64 &&
- "32-bit object file when we're 64-bit?");
+ assert((CPUType & llvm::MachO::CPU_ARCH_ABI64)
+ == llvm::MachO::CPU_ARCH_ABI64 &&
+ "32-bit object file when we're 64-bit?");
- switch (getHeader()->CPUType) {
- case llvm::MachO::CPUTypeX86_64:
+ switch (CPUType) {
+ case llvm::MachO::CPU_TYPE_X86_64:
return "Mach-O 64-bit x86-64";
- case llvm::MachO::CPUTypePowerPC64:
+ case llvm::MachO::CPU_TYPE_ARM64:
+ return "Mach-O arm64";
+ case llvm::MachO::CPU_TYPE_POWERPC64:
return "Mach-O 64-bit ppc64";
default:
return "Mach-O 64-bit unknown";
}
}
-unsigned MachOObjectFile::getArch() const {
- switch (getHeader()->CPUType) {
- case llvm::MachO::CPUTypeI386:
+Triple::ArchType MachOObjectFile::getArch(uint32_t CPUType) {
+ switch (CPUType) {
+ case llvm::MachO::CPU_TYPE_I386:
return Triple::x86;
- case llvm::MachO::CPUTypeX86_64:
+ case llvm::MachO::CPU_TYPE_X86_64:
return Triple::x86_64;
- case llvm::MachO::CPUTypeARM:
+ case llvm::MachO::CPU_TYPE_ARM:
return Triple::arm;
- case llvm::MachO::CPUTypePowerPC:
+ case llvm::MachO::CPU_TYPE_ARM64:
+ return Triple::arm64;
+ case llvm::MachO::CPU_TYPE_POWERPC:
return Triple::ppc;
- case llvm::MachO::CPUTypePowerPC64:
+ case llvm::MachO::CPU_TYPE_POWERPC64:
return Triple::ppc64;
default:
return Triple::UnknownArch;
}
}
+Triple MachOObjectFile::getArch(uint32_t CPUType, uint32_t CPUSubType) {
+ 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_V6:
+ return Triple("armv6-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V6M:
+ return Triple("armv6m-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7EM:
+ return Triple("armv7em-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7K:
+ return Triple("armv7k-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7M:
+ 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::getHostArch() {
+ return Triple(sys::getDefaultTargetTriple());
+}
+
+Triple MachOObjectFile::getArch(StringRef ArchFlag) {
+ if (ArchFlag == "i386")
+ return Triple("i386-apple-darwin");
+ else if (ArchFlag == "x86_64")
+ return Triple("x86_64-apple-darwin");
+ else if (ArchFlag == "x86_64h")
+ return Triple("x86_64h-apple-darwin");
+ else if (ArchFlag == "armv4t" || ArchFlag == "arm")
+ return Triple("armv4t-apple-darwin");
+ else if (ArchFlag == "armv5e")
+ return Triple("armv5e-apple-darwin");
+ else if (ArchFlag == "armv6")
+ return Triple("armv6-apple-darwin");
+ else if (ArchFlag == "armv6m")
+ return Triple("armv6m-apple-darwin");
+ else if (ArchFlag == "armv7em")
+ return Triple("armv7em-apple-darwin");
+ else if (ArchFlag == "armv7k")
+ return Triple("armv7k-apple-darwin");
+ else if (ArchFlag == "armv7k")
+ return Triple("armv7m-apple-darwin");
+ else if (ArchFlag == "armv7s")
+ return Triple("armv7s-apple-darwin");
+ else if (ArchFlag == "arm64")
+ return Triple("arm64-apple-darwin");
+ else if (ArchFlag == "ppc")
+ return Triple("ppc-apple-darwin");
+ else if (ArchFlag == "ppc64")
+ return Triple("ppc64-apple-darwin");
+ else
+ return Triple();
+}
+
+unsigned MachOObjectFile::getArch() const {
+ return getArch(getCPUType(this));
+}
+
+StringRef MachOObjectFile::getLoadName() const {
+ // TODO: Implement
+ report_fatal_error("get_load_name() unimplemented in MachOObjectFile");
+}
+
+relocation_iterator MachOObjectFile::section_rel_begin(unsigned Index) const {
+ DataRefImpl DRI;
+ DRI.d.a = Index;
+ return section_rel_begin(DRI);
+}
+
+relocation_iterator MachOObjectFile::section_rel_end(unsigned Index) const {
+ DataRefImpl DRI;
+ DRI.d.a = Index;
+ return section_rel_end(DRI);
+}
+
+dice_iterator MachOObjectFile::begin_dices() const {
+ DataRefImpl DRI;
+ if (!DataInCodeLoadCmd)
+ return dice_iterator(DiceRef(DRI, this));
+
+ MachO::linkedit_data_command DicLC = getDataInCodeLoadCommand();
+ DRI.p = reinterpret_cast<uintptr_t>(getPtr(this, DicLC.dataoff));
+ return dice_iterator(DiceRef(DRI, this));
+}
+
+dice_iterator MachOObjectFile::end_dices() const {
+ DataRefImpl DRI;
+ if (!DataInCodeLoadCmd)
+ return dice_iterator(DiceRef(DRI, this));
+
+ MachO::linkedit_data_command DicLC = getDataInCodeLoadCommand();
+ unsigned Offset = DicLC.dataoff + DicLC.datasize;
+ DRI.p = reinterpret_cast<uintptr_t>(getPtr(this, Offset));
+ return dice_iterator(DiceRef(DRI, this));
+}
+
+StringRef
+MachOObjectFile::getSectionFinalSegmentName(DataRefImpl Sec) const {
+ ArrayRef<char> Raw = getSectionRawFinalSegmentName(Sec);
+ return parseSegmentOrSectionName(Raw.data());
+}
+
+ArrayRef<char>
+MachOObjectFile::getSectionRawName(DataRefImpl Sec) const {
+ const section_base *Base =
+ reinterpret_cast<const section_base *>(Sections[Sec.d.a]);
+ return ArrayRef<char>(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);
+}
+
+bool
+MachOObjectFile::isRelocationScattered(const MachO::any_relocation_info &RE)
+ const {
+ if (getCPUType(this) == MachO::CPU_TYPE_X86_64)
+ return false;
+ return getPlainRelocationAddress(RE) & MachO::R_SCATTERED;
+}
+
+unsigned MachOObjectFile::getPlainRelocationSymbolNum(
+ const MachO::any_relocation_info &RE) const {
+ if (isLittleEndian())
+ return RE.r_word1 & 0xffffff;
+ return RE.r_word1 >> 8;
+}
+
+bool MachOObjectFile::getPlainRelocationExternal(
+ const MachO::any_relocation_info &RE) const {
+ if (isLittleEndian())
+ return (RE.r_word1 >> 27) & 1;
+ return (RE.r_word1 >> 4) & 1;
+}
+
+bool MachOObjectFile::getScatteredRelocationScattered(
+ const MachO::any_relocation_info &RE) const {
+ return RE.r_word0 >> 31;
+}
+
+uint32_t MachOObjectFile::getScatteredRelocationValue(
+ const MachO::any_relocation_info &RE) const {
+ return RE.r_word1;
+}
+
+unsigned MachOObjectFile::getAnyRelocationAddress(
+ const MachO::any_relocation_info &RE) const {
+ if (isRelocationScattered(RE))
+ return getScatteredRelocationAddress(RE);
+ return getPlainRelocationAddress(RE);
+}
+
+unsigned MachOObjectFile::getAnyRelocationPCRel(
+ const MachO::any_relocation_info &RE) const {
+ if (isRelocationScattered(RE))
+ return getScatteredRelocationPCRel(this, RE);
+ return getPlainRelocationPCRel(this, RE);
+}
+
+unsigned MachOObjectFile::getAnyRelocationLength(
+ const MachO::any_relocation_info &RE) const {
+ if (isRelocationScattered(RE))
+ return getScatteredRelocationLength(RE);
+ return getPlainRelocationLength(this, RE);
+}
+
+unsigned
+MachOObjectFile::getAnyRelocationType(
+ const MachO::any_relocation_info &RE) const {
+ if (isRelocationScattered(RE))
+ return getScatteredRelocationType(RE);
+ return getPlainRelocationType(this, RE);
+}
+
+SectionRef
+MachOObjectFile::getRelocationSection(
+ const MachO::any_relocation_info &RE) const {
+ if (isRelocationScattered(RE) || getPlainRelocationExternal(RE))
+ return *section_end();
+ unsigned SecNum = getPlainRelocationSymbolNum(RE) - 1;
+ DataRefImpl DRI;
+ DRI.d.a = SecNum;
+ return SectionRef(DRI, this);
+}
+
+MachOObjectFile::LoadCommandInfo
+MachOObjectFile::getFirstLoadCommandInfo() const {
+ MachOObjectFile::LoadCommandInfo Load;
+
+ unsigned HeaderSize = is64Bit() ? sizeof(MachO::mach_header_64) :
+ sizeof(MachO::mach_header);
+ Load.Ptr = getPtr(this, HeaderSize);
+ Load.C = getStruct<MachO::load_command>(this, Load.Ptr);
+ return Load;
+}
+
+MachOObjectFile::LoadCommandInfo
+MachOObjectFile::getNextLoadCommandInfo(const LoadCommandInfo &L) const {
+ MachOObjectFile::LoadCommandInfo Next;
+ Next.Ptr = L.Ptr + L.C.cmdsize;
+ Next.C = getStruct<MachO::load_command>(this, Next.Ptr);
+ return Next;
+}
+
+MachO::section MachOObjectFile::getSection(DataRefImpl DRI) const {
+ return getStruct<MachO::section>(this, Sections[DRI.d.a]);
+}
+
+MachO::section_64 MachOObjectFile::getSection64(DataRefImpl DRI) const {
+ return getStruct<MachO::section_64>(this, Sections[DRI.d.a]);
+}
+
+MachO::section MachOObjectFile::getSection(const LoadCommandInfo &L,
+ unsigned Index) const {
+ const char *Sec = getSectionPtr(this, L, Index);
+ return getStruct<MachO::section>(this, Sec);
+}
+
+MachO::section_64 MachOObjectFile::getSection64(const LoadCommandInfo &L,
+ unsigned Index) const {
+ const char *Sec = getSectionPtr(this, L, Index);
+ return getStruct<MachO::section_64>(this, Sec);
+}
+
+MachO::nlist
+MachOObjectFile::getSymbolTableEntry(DataRefImpl DRI) const {
+ const char *P = reinterpret_cast<const char *>(DRI.p);
+ return getStruct<MachO::nlist>(this, P);
+}
+
+MachO::nlist_64
+MachOObjectFile::getSymbol64TableEntry(DataRefImpl DRI) const {
+ const char *P = reinterpret_cast<const char *>(DRI.p);
+ return getStruct<MachO::nlist_64>(this, P);
+}
+
+MachO::linkedit_data_command
+MachOObjectFile::getLinkeditDataLoadCommand(const LoadCommandInfo &L) const {
+ return getStruct<MachO::linkedit_data_command>(this, L.Ptr);
+}
+
+MachO::segment_command
+MachOObjectFile::getSegmentLoadCommand(const LoadCommandInfo &L) const {
+ return getStruct<MachO::segment_command>(this, L.Ptr);
+}
+
+MachO::segment_command_64
+MachOObjectFile::getSegment64LoadCommand(const LoadCommandInfo &L) const {
+ return getStruct<MachO::segment_command_64>(this, L.Ptr);
+}
+
+MachO::linker_options_command
+MachOObjectFile::getLinkerOptionsLoadCommand(const LoadCommandInfo &L) const {
+ return getStruct<MachO::linker_options_command>(this, L.Ptr);
+}
+
+MachO::version_min_command
+MachOObjectFile::getVersionMinLoadCommand(const LoadCommandInfo &L) const {
+ 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::any_relocation_info
+MachOObjectFile::getRelocation(DataRefImpl Rel) const {
+ 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
+MachOObjectFile::getDice(DataRefImpl Rel) const {
+ const char *P = reinterpret_cast<const char *>(Rel.p);
+ return getStruct<MachO::data_in_code_entry>(this, P);
+}
+
+MachO::mach_header MachOObjectFile::getHeader() const {
+ return getStruct<MachO::mach_header>(this, getPtr(this, 0));
+}
+
+MachO::mach_header_64 MachOObjectFile::getHeader64() const {
+ return getStruct<MachO::mach_header_64>(this, getPtr(this, 0));
+}
+
+uint32_t MachOObjectFile::getIndirectSymbolTableEntry(
+ const MachO::dysymtab_command &DLC,
+ unsigned Index) const {
+ uint64_t Offset = DLC.indirectsymoff + Index * sizeof(uint32_t);
+ return getStruct<uint32_t>(this, getPtr(this, Offset));
+}
+
+MachO::data_in_code_entry
+MachOObjectFile::getDataInCodeTableEntry(uint32_t DataOffset,
+ unsigned Index) const {
+ uint64_t Offset = DataOffset + Index * sizeof(MachO::data_in_code_entry);
+ return getStruct<MachO::data_in_code_entry>(this, getPtr(this, Offset));
+}
+
+MachO::symtab_command MachOObjectFile::getSymtabLoadCommand() const {
+ return getStruct<MachO::symtab_command>(this, SymtabLoadCmd);
+}
+
+MachO::dysymtab_command MachOObjectFile::getDysymtabLoadCommand() const {
+ return getStruct<MachO::dysymtab_command>(this, DysymtabLoadCmd);
+}
+
+MachO::linkedit_data_command
+MachOObjectFile::getDataInCodeLoadCommand() const {
+ if (DataInCodeLoadCmd)
+ return getStruct<MachO::linkedit_data_command>(this, DataInCodeLoadCmd);
+
+ // If there is no DataInCodeLoadCmd return a load command with zero'ed fields.
+ MachO::linkedit_data_command Cmd;
+ Cmd.cmd = MachO::LC_DATA_IN_CODE;
+ Cmd.cmdsize = sizeof(MachO::linkedit_data_command);
+ Cmd.dataoff = 0;
+ Cmd.datasize = 0;
+ return Cmd;
+}
+
+StringRef MachOObjectFile::getStringTableData() const {
+ MachO::symtab_command S = getSymtabLoadCommand();
+ return getData().substr(S.stroff, S.strsize);
+}
+
+bool MachOObjectFile::is64Bit() const {
+ return getType() == getMachOType(false, true) ||
+ getType() == getMachOType(true, true);
+}
+
+void MachOObjectFile::ReadULEB128s(uint64_t Index,
+ SmallVectorImpl<uint64_t> &Out) const {
+ DataExtractor extractor(ObjectFile::getData(), true, 0);
+
+ uint32_t offset = Index;
+ uint64_t data = 0;
+ while (uint64_t delta = extractor.getULEB128(&offset)) {
+ data += delta;
+ Out.push_back(data);
+ }
+}
+
+const char *MachOObjectFile::getSectionPointer(DataRefImpl Rel) const {
+ return Sections[Rel.d.a];
+}
+
+ErrorOr<ObjectFile *>
+ObjectFile::createMachOObjectFile(std::unique_ptr<MemoryBuffer> &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(std::move(Buffer), false, false, EC));
+ else if (Magic == "\xCE\xFA\xED\xFE")
+ Ret.reset(new MachOObjectFile(std::move(Buffer), true, false, EC));
+ else if (Magic == "\xFE\xED\xFA\xCF")
+ Ret.reset(new MachOObjectFile(std::move(Buffer), false, true, EC));
+ else if (Magic == "\xCF\xFA\xED\xFE")
+ Ret.reset(new MachOObjectFile(std::move(Buffer), true, true, EC));
+ else
+ return object_error::parse_failed;
+
+ if (EC)
+ return EC;
+ return Ret.release();
+}
+
} // end namespace object
} // end namespace llvm