#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 <cctype>
#include <cstring>
namespace llvm {
namespace object {
-MachOObjectFile::MachOObjectFile(MemoryBuffer *Object, bool Is64bits,
- error_code &ec)
- : ObjectFile(getMachOType(true, Is64bits), 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 SymbolTableEntryBase {
+ uint32_t StringIndex;
+ uint8_t Type;
+ uint8_t SectionIndex;
+ uint16_t Flags;
+};
+
+struct SectionBase {
+ char Name[16];
+ char SegmentName[16];
+};
+
+template<typename T>
+static void SwapValue(T &Value) {
+ Value = sys::SwapByteOrder(Value);
+}
+
+template<typename T>
+static void SwapStruct(T &Value);
+
+template<>
+void SwapStruct(macho::RelocationEntry &H) {
+ SwapValue(H.Word0);
+ SwapValue(H.Word1);
+}
+
+template<>
+void SwapStruct(macho::LoadCommand &L) {
+ SwapValue(L.Type);
+ SwapValue(L.Size);
+}
+
+template<>
+void SwapStruct(SymbolTableEntryBase &S) {
+ SwapValue(S.StringIndex);
+ SwapValue(S.Flags);
+}
+
+template<>
+void SwapStruct(macho::Section &S) {
+ SwapValue(S.Address);
+ SwapValue(S.Size);
+ SwapValue(S.Offset);
+ SwapValue(S.Align);
+ SwapValue(S.RelocationTableOffset);
+ SwapValue(S.NumRelocationTableEntries);
+ SwapValue(S.Flags);
+ SwapValue(S.Reserved1);
+ SwapValue(S.Reserved2);
+}
+
+template<>
+void SwapStruct(macho::Section64 &S) {
+ SwapValue(S.Address);
+ SwapValue(S.Size);
+ SwapValue(S.Offset);
+ SwapValue(S.Align);
+ SwapValue(S.RelocationTableOffset);
+ SwapValue(S.NumRelocationTableEntries);
+ SwapValue(S.Flags);
+ SwapValue(S.Reserved1);
+ SwapValue(S.Reserved2);
+ SwapValue(S.Reserved3);
+}
+
+template<>
+void SwapStruct(macho::SymbolTableEntry &S) {
+ SwapValue(S.StringIndex);
+ SwapValue(S.Flags);
+ SwapValue(S.Value);
+}
+
+template<>
+void SwapStruct(macho::Symbol64TableEntry &S) {
+ SwapValue(S.StringIndex);
+ SwapValue(S.Flags);
+ SwapValue(S.Value);
+}
+
+template<>
+void SwapStruct(macho::Header &H) {
+ SwapValue(H.Magic);
+ SwapValue(H.CPUType);
+ SwapValue(H.CPUSubtype);
+ SwapValue(H.FileType);
+ SwapValue(H.NumLoadCommands);
+ SwapValue(H.SizeOfLoadCommands);
+ SwapValue(H.Flags);
+}
+
+template<>
+void SwapStruct(macho::Header64Ext &E) {
+ SwapValue(E.Reserved);
+}
+
+template<>
+void SwapStruct(macho::SymtabLoadCommand &C) {
+ SwapValue(C.Type);
+ SwapValue(C.Size);
+ SwapValue(C.SymbolTableOffset);
+ SwapValue(C.NumSymbolTableEntries);
+ SwapValue(C.StringTableOffset);
+ SwapValue(C.StringTableSize);
+}
+
+template<>
+void SwapStruct(macho::DysymtabLoadCommand &C) {
+ SwapValue(C.Type);
+ SwapValue(C.Size);
+ SwapValue(C.LocalSymbolsIndex);
+ SwapValue(C.NumLocalSymbols);
+ SwapValue(C.ExternalSymbolsIndex);
+ SwapValue(C.NumExternalSymbols);
+ SwapValue(C.UndefinedSymbolsIndex);
+ SwapValue(C.NumUndefinedSymbols);
+ SwapValue(C.TOCOffset);
+ SwapValue(C.NumTOCEntries);
+ SwapValue(C.ModuleTableOffset);
+ SwapValue(C.NumModuleTableEntries);
+ SwapValue(C.ReferenceSymbolTableOffset);
+ SwapValue(C.NumReferencedSymbolTableEntries);
+ SwapValue(C.IndirectSymbolTableOffset);
+ SwapValue(C.NumIndirectSymbolTableEntries);
+ SwapValue(C.ExternalRelocationTableOffset);
+ SwapValue(C.NumExternalRelocationTableEntries);
+ SwapValue(C.LocalRelocationTableOffset);
+ SwapValue(C.NumLocalRelocationTableEntries);
+}
+
+template<>
+void SwapStruct(macho::LinkeditDataLoadCommand &C) {
+ SwapValue(C.Type);
+ SwapValue(C.Size);
+ SwapValue(C.DataOffset);
+ SwapValue(C.DataSize);
+}
+
+template<>
+void SwapStruct(macho::SegmentLoadCommand &C) {
+ SwapValue(C.Type);
+ SwapValue(C.Size);
+ SwapValue(C.VMAddress);
+ SwapValue(C.VMSize);
+ SwapValue(C.FileOffset);
+ SwapValue(C.FileSize);
+ SwapValue(C.MaxVMProtection);
+ SwapValue(C.InitialVMProtection);
+ SwapValue(C.NumSections);
+ SwapValue(C.Flags);
+}
+
+template<>
+void SwapStruct(macho::Segment64LoadCommand &C) {
+ SwapValue(C.Type);
+ SwapValue(C.Size);
+ SwapValue(C.VMAddress);
+ SwapValue(C.VMSize);
+ SwapValue(C.FileOffset);
+ SwapValue(C.FileSize);
+ SwapValue(C.MaxVMProtection);
+ SwapValue(C.InitialVMProtection);
+ SwapValue(C.NumSections);
+ SwapValue(C.Flags);
+}
+
+template<>
+void SwapStruct(macho::IndirectSymbolTableEntry &C) {
+ SwapValue(C.Index);
+}
+
+template<>
+void SwapStruct(macho::LinkerOptionsLoadCommand &C) {
+ SwapValue(C.Type);
+ SwapValue(C.Size);
+ SwapValue(C.Count);
+}
+
+template<>
+void SwapStruct(macho::DataInCodeTableEntry &C) {
+ SwapValue(C.Offset);
+ SwapValue(C.Length);
+ SwapValue(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::Segment64LoadCommand S = O->getSegment64LoadCommand(L);
+ return S.NumSections;
}
+ macho::SegmentLoadCommand S = O->getSegmentLoadCommand(L);
+ return S.NumSections;
}
-bool MachOObjectFile::is64Bit() const {
- unsigned int Type = getType();
- return Type == ID_MachO64L || Type == ID_MachO64B;
-}
-
-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);
+static const char *
+getSectionPtr(const MachOObjectFile *O, MachOObjectFile::LoadCommandInfo L,
+ unsigned Sec) {
+ uintptr_t CommandAddr = reinterpret_cast<uintptr_t>(L.Ptr);
- return Load;
+ bool Is64 = O->is64Bit();
+ unsigned SegmentLoadSize = Is64 ? sizeof(macho::Segment64LoadCommand) :
+ sizeof(macho::SegmentLoadCommand);
+ unsigned SectionSize = Is64 ? sizeof(macho::Section64) :
+ sizeof(macho::Section);
+
+ uintptr_t SectionAddr = CommandAddr + SegmentLoadSize + Sec * SectionSize;
+ return reinterpret_cast<const char*>(SectionAddr);
}
-void MachOObjectFile::ReadULEB128s(uint64_t Index,
- SmallVectorImpl<uint64_t> &Out) const {
- DataExtractor extractor(ObjectFile::getData(), true, 0);
+static const char *getPtr(const MachOObjectFile *O, size_t Offset) {
+ return O->getData().substr(Offset, 1).data();
+}
- uint32_t offset = Index;
- uint64_t data = 0;
- while (uint64_t delta = extractor.getULEB128(&offset)) {
- data += delta;
- Out.push_back(data);
- }
+static SymbolTableEntryBase
+getSymbolTableEntryBase(const MachOObjectFile *O, DataRefImpl DRI) {
+ const char *P = reinterpret_cast<const char *>(DRI.p);
+ return getStruct<SymbolTableEntryBase>(O, P);
}
-const MachOFormat::Header *MachOObjectFile::getHeader() const {
- StringRef Data = getData(0, sizeof(MachOFormat::Header));
- return reinterpret_cast<const MachOFormat::Header*>(Data.data());
+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);
}
-unsigned MachOObjectFile::getHeaderSize() const {
- return is64Bit() ? macho::Header64Size : macho::Header32Size;
+// Helper to advance a section or symbol iterator multiple increments at a time.
+template<class T>
+static error_code advance(T &it, size_t Val) {
+ error_code ec;
+ while (Val--) {
+ it.increment(ec);
+ }
+ return ec;
}
-StringRef MachOObjectFile::getData(size_t Offset, size_t Size) const {
- return ObjectFile::getData().substr(Offset, Size);
+template<class T>
+static void advanceTo(T &it, size_t Val) {
+ if (error_code ec = advance(it, Val))
+ report_fatal_error(ec.message());
}
-ObjectFile *ObjectFile::createMachOObjectFile(MemoryBuffer *Buffer) {
- StringRef Magic = Buffer->getBuffer().slice(0, 4);
- error_code ec;
- bool Is64Bits = Magic == "\xFE\xED\xFA\xCF" || Magic == "\xCF\xFA\xED\xFE";
- ObjectFile *Ret = new MachOObjectFile(Buffer, Is64Bits, 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::RelocationEntry &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);
-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;
+ error_code ec;
+ for (symbol_iterator SI = O->begin_symbols(), SE = O->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 = O->begin_sections(), SE = O->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;
}
- DRI.d.a++;
- DRI.d.b = 0;
+ fmt << format("0x%x", Val);
+ return;
}
+
+ StringRef S;
+ bool isExtern = O->getPlainRelocationExternal(RE);
+ uint64_t Val = O->getAnyRelocationAddress(RE);
+
+ if (isExtern) {
+ symbol_iterator SI = O->begin_symbols();
+ advanceTo(SI, Val);
+ SI->getName(S);
+ } else {
+ section_iterator SI = O->begin_sections();
+ advanceTo(SI, Val);
+ 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::RelocationEntry &RE) {
+ return RE.Word0;
+}
- return getSymbolTableEntry(DRI, SymtabLoadCmd);
+static unsigned
+getScatteredRelocationAddress(const macho::RelocationEntry &RE) {
+ return RE.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::RelocationEntry &RE) {
+ if (O->isLittleEndian())
+ return (RE.Word1 >> 24) & 1;
+ return (RE.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::RelocationEntry &RE) {
+ return (RE.Word0 >> 30) & 1;
+}
- return getSymbol64TableEntry(DRI, SymtabLoadCmd);
+static unsigned getPlainRelocationLength(const MachOObjectFile *O,
+ const macho::RelocationEntry &RE) {
+ if (O->isLittleEndian())
+ return (RE.Word1 >> 25) & 3;
+ return (RE.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::RelocationEntry &RE) {
+ return (RE.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::RelocationEntry &RE) {
+ if (O->isLittleEndian())
+ return RE.Word1 >> 28;
+ return RE.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::RelocationEntry &RE) {
+ return (RE.Word0 >> 24) & 0xf;
+}
- StringRef StringTable = getData(SymtabLoadCmd->StringTableOffset,
- SymtabLoadCmd->StringTableSize);
+static uint32_t getSectionFlags(const MachOObjectFile *O,
+ DataRefImpl Sec) {
+ if (O->is64Bit()) {
+ macho::Section64 Sect = O->getSection64(Sec);
+ return Sect.Flags;
+ }
+ macho::Section Sect = O->getSection(Sec);
+ return Sect.Flags;
+}
- 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;
+MachOObjectFile::MachOObjectFile(MemoryBuffer *Object,
+ bool IsLittleEndian, bool Is64bits,
+ error_code &ec)
+ : ObjectFile(getMachOType(IsLittleEndian, Is64bits), Object),
+ SymtabLoadCmd(NULL), DysymtabLoadCmd(NULL) {
+ uint32_t LoadCommandCount = this->getHeader().NumLoadCommands;
+ macho::LoadCommandType SegmentLoadType = is64Bit() ?
+ macho::LCT_Segment64 : macho::LCT_Segment;
+
+ MachOObjectFile::LoadCommandInfo Load = getFirstLoadCommandInfo();
+ for (unsigned I = 0; ; ++I) {
+ if (Load.C.Type == macho::LCT_Symtab) {
+ assert(!SymtabLoadCmd && "Multiple symbol tables");
+ SymtabLoadCmd = Load.Ptr;
+ } else if (Load.C.Type == macho::LCT_Dysymtab) {
+ assert(!DysymtabLoadCmd && "Multiple dynamic symbol tables");
+ DysymtabLoadCmd = Load.Ptr;
+ } else if (Load.C.Type == 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);
+ }
+ }
+
+ if (I == LoadCommandCount - 1)
+ break;
+ else
+ Load = getNextLoadCommandInfo(Load);
}
+}
- const char *Start = &StringTable.data()[StringIndex];
- Result = StringRef(Start);
+error_code MachOObjectFile::getSymbolNext(DataRefImpl Symb,
+ SymbolRef &Res) const {
+ unsigned SymbolTableEntrySize = is64Bit() ?
+ sizeof(macho::Symbol64TableEntry) :
+ sizeof(macho::SymbolTableEntry);
+ Symb.p += SymbolTableEntrySize;
+ Res = SymbolRef(Symb, this);
+ return object_error::success;
+}
+error_code MachOObjectFile::getSymbolName(DataRefImpl Symb,
+ StringRef &Res) const {
+ StringRef StringTable = getStringTableData();
+ SymbolTableEntryBase Entry = getSymbolTableEntryBase(this, Symb);
+ const char *Start = &StringTable.data()[Entry.StringIndex];
+ Res = StringRef(Start);
return object_error::success;
}
-error_code MachOObjectFile::getSymbolFileOffset(DataRefImpl DRI,
- uint64_t &Result) const {
+error_code MachOObjectFile::getSymbolAddress(DataRefImpl Symb,
+ uint64_t &Res) const {
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::Symbol64TableEntry Entry = getSymbol64TableEntry(Symb);
+ Res = Entry.Value;
} 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::SymbolTableEntry Entry = getSymbolTableEntry(Symb);
+ Res = Entry.Value;
+ }
+ return object_error::success;
+}
+
+error_code
+MachOObjectFile::getSymbolFileOffset(DataRefImpl Symb,
+ uint64_t &Res) const {
+ SymbolTableEntryBase Entry = getSymbolTableEntryBase(this, Symb);
+ getSymbolAddress(Symb, Res);
+ if (Entry.SectionIndex) {
+ uint64_t Delta;
+ DataRefImpl SecRel;
+ SecRel.d.a = Entry.SectionIndex-1;
+ if (is64Bit()) {
+ macho::Section64 Sec = getSection64(SecRel);
+ Delta = Sec.Offset - Sec.Address;
+ } else {
+ macho::Section Sec = getSection(SecRel);
+ Delta = Sec.Offset - Sec.Address;
}
+
+ Res += Delta;
}
return object_error::success;
}
-error_code MachOObjectFile::getSymbolAddress(DataRefImpl DRI,
- uint64_t &Result) const {
- if (is64Bit()) {
- const MachOFormat::Symbol64TableEntry *Entry = getSymbol64TableEntry(DRI);
- Result = Entry->Value;
+error_code MachOObjectFile::getSymbolAlignment(DataRefImpl DRI,
+ uint32_t &Result) const {
+ uint32_t flags;
+ this->getSymbolFlags(DRI, flags);
+ if (flags & SymbolRef::SF_Common) {
+ SymbolTableEntryBase Entry = getSymbolTableEntryBase(this, DRI);
+ Result = 1 << MachO::GET_COMM_ALIGN(Entry.Flags);
} else {
- const MachOFormat::SymbolTableEntry *Entry = getSymbolTableEntry(DRI);
- Result = Entry->Value;
+ Result = 0;
}
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++;
- }
- } 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++;
- }
+
+ SymbolTableEntryBase Entry = getSymbolTableEntryBase(this, DRI);
+ uint64_t Value;
+ getSymbolAddress(DRI, Value);
+
+ BeginOffset = Value;
+
+ SectionIndex = Entry.SectionIndex;
+ if (!SectionIndex) {
+ uint32_t flags = SymbolRef::SF_None;
+ this->getSymbolFlags(DRI, flags);
+ if (flags & SymbolRef::SF_Common)
+ Result = Value;
+ else
+ Result = UnknownAddressOrSize;
+ return object_error::success;
+ }
+ // Unfortunately symbols are unsorted so we need to touch all
+ // symbols from load command
+ error_code ec;
+ for (symbol_iterator I = begin_symbols(), E = end_symbols(); I != E;
+ I.increment(ec)) {
+ DataRefImpl DRI = I->getRawDataRefImpl();
+ Entry = getSymbolTableEntryBase(this, DRI);
+ getSymbolAddress(DRI, Value);
+ if (Entry.SectionIndex == SectionIndex && Value > BeginOffset)
+ if (!EndOffset || Value < EndOffset)
+ EndOffset = Value;
}
if (!EndOffset) {
uint64_t Size;
- getSectionSize(Sections[SectionIndex-1], Size);
- getSectionAddress(Sections[SectionIndex-1], EndOffset);
+ DataRefImpl Sec;
+ Sec.d.a = SectionIndex-1;
+ getSectionSize(Sec, Size);
+ getSectionAddress(Sec, EndOffset);
EndOffset += Size;
}
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;
+error_code MachOObjectFile::getSymbolType(DataRefImpl Symb,
+ SymbolRef::Type &Res) const {
+ SymbolTableEntryBase Entry = getSymbolTableEntryBase(this, Symb);
+ uint8_t n_type = Entry.Type;
+
+ Res = SymbolRef::ST_Other;
+
+ // If this is a STAB debugging symbol, we can do nothing more.
+ if (n_type & MachO::NlistMaskStab) {
+ Res = SymbolRef::ST_Debug;
+ return object_error::success;
}
+ switch (n_type & MachO::NlistMaskType) {
+ case MachO::NListTypeUndefined :
+ Res = SymbolRef::ST_Unknown;
+ break;
+ case MachO::NListTypeSection :
+ Res = SymbolRef::ST_Function;
+ break;
+ }
+ return object_error::success;
+}
+
+error_code MachOObjectFile::getSymbolNMTypeChar(DataRefImpl Symb,
+ char &Res) const {
+ SymbolTableEntryBase Entry = getSymbolTableEntryBase(this, Symb);
+ uint8_t Type = Entry.Type;
+ uint16_t Flags = Entry.Flags;
+
char Char;
switch (Type & macho::STF_TypeMask) {
case macho::STT_Undefined:
if (Flags & (macho::STF_External | macho::STF_PrivateExtern))
Char = toupper(static_cast<unsigned char>(Char));
- Result = Char;
+ Res = Char;
return object_error::success;
}
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;
- }
+ SymbolTableEntryBase Entry = getSymbolTableEntryBase(this, DRI);
+
+ uint8_t MachOType = Entry.Type;
+ uint16_t MachOFlags = Entry.Flags;
// TODO: Correctly set SF_ThreadLocal
Result = SymbolRef::SF_None;
if (MachOType & MachO::NlistMaskExternal) {
Result |= SymbolRef::SF_Global;
- if ((MachOType & MachO::NlistMaskType) == MachO::NListTypeUndefined)
- Result |= SymbolRef::SF_Common;
+ if ((MachOType & MachO::NlistMaskType) == MachO::NListTypeUndefined) {
+ uint64_t Value;
+ getSymbolAddress(DRI, Value);
+ if (Value)
+ Result |= SymbolRef::SF_Common;
+ }
}
if (MachOFlags & (MachO::NListDescWeakRef | MachO::NListDescWeakDef))
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;
- }
+error_code
+MachOObjectFile::getSymbolSection(DataRefImpl Symb,
+ section_iterator &Res) const {
+ SymbolTableEntryBase Entry = getSymbolTableEntryBase(this, Symb);
+ uint8_t index = Entry.SectionIndex;
- if (index == 0)
+ if (index == 0) {
Res = end_sections();
- else
- Res = section_iterator(SectionRef(Sections[index-1], this));
-
- 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;
- }
- Res = SymbolRef::ST_Other;
-
- // If this is a STAB debugging symbol, we can do nothing more.
- if (n_type & MachO::NlistMaskStab) {
- Res = SymbolRef::ST_Debug;
- return object_error::success;
+ DataRefImpl DRI;
+ DRI.d.a = index - 1;
+ Res = section_iterator(SectionRef(DRI, this));
}
- switch (n_type & MachO::NlistMaskType) {
- case MachO::NListTypeUndefined :
- Res = SymbolRef::ST_Unknown;
- break;
- case MachO::NListTypeSection :
- Res = SymbolRef::ST_Function;
- break;
- }
return object_error::success;
}
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));
-}
-
-symbol_iterator MachOObjectFile::begin_dynamic_symbols() const {
- // TODO: implement
- report_fatal_error("Dynamic symbols unimplemented in MachOObjectFile");
-}
-
-symbol_iterator MachOObjectFile::end_dynamic_symbols() const {
- // TODO: implement
- report_fatal_error("Dynamic symbols unimplemented in MachOObjectFile");
-}
-
-library_iterator MachOObjectFile::begin_libraries_needed() const {
- // TODO: implement
- report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
-}
-
-library_iterator MachOObjectFile::end_libraries_needed() const {
- // TODO: implement
- report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
-}
-
-StringRef MachOObjectFile::getLoadName() const {
- // TODO: Implement
- report_fatal_error("get_load_name() unimplemented in MachOObjectFile");
-}
-
-/*===-- 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;
- }
-
- 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);
+error_code MachOObjectFile::getSectionNext(DataRefImpl Sec,
+ SectionRef &Res) const {
+ Sec.d.a++;
+ Res = SectionRef(Sec, this);
return object_error::success;
}
-const MachOFormat::Section *MachOObjectFile::getSection(DataRefImpl DRI) const {
- assert(!is64Bit());
- 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);
-}
-
-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);
-}
-
-const MachOFormat::Section64 *
-MachOObjectFile::getSection64(DataRefImpl DRI) const {
- assert(is64Bit());
- 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);
-}
-
-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);
-}
-
-ArrayRef<char> MachOObjectFile::getSectionRawName(DataRefImpl DRI) const {
- if (is64Bit()) {
- const MachOFormat::Section64 *sec = getSection64(DRI);
- return ArrayRef<char>(sec->Name);
- } else {
- const MachOFormat::Section *sec = getSection(DRI);
- return ArrayRef<char>(sec->Name);
- }
-}
-
-error_code MachOObjectFile::getSectionName(DataRefImpl DRI,
- StringRef &Result) const {
- ArrayRef<char> Raw = getSectionRawName(DRI);
+error_code
+MachOObjectFile::getSectionName(DataRefImpl Sec, StringRef &Result) const {
+ ArrayRef<char> Raw = getSectionRawName(Sec);
Result = parseSegmentOrSectionName(Raw.data());
return object_error::success;
}
-ArrayRef<char>
-MachOObjectFile::getSectionRawFinalSegmentName(DataRefImpl Sec) const {
- if (is64Bit()) {
- const MachOFormat::Section64 *sec = getSection64(Sec);
- return ArrayRef<char>(sec->SegmentName, 16);
- } else {
- const MachOFormat::Section *sec = getSection(Sec);
- return ArrayRef<char>(sec->SegmentName);
- }
-}
-
-StringRef MachOObjectFile::getSectionFinalSegmentName(DataRefImpl DRI) const {
- ArrayRef<char> Raw = getSectionRawFinalSegmentName(DRI);
- return parseSegmentOrSectionName(Raw.data());
-}
-
-error_code MachOObjectFile::getSectionAddress(DataRefImpl DRI,
- uint64_t &Result) const {
+error_code
+MachOObjectFile::getSectionAddress(DataRefImpl Sec, uint64_t &Res) const {
if (is64Bit()) {
- const MachOFormat::Section64 *Sect = getSection64(DRI);
- Result = Sect->Address;
+ macho::Section64 Sect = getSection64(Sec);
+ Res = Sect.Address;
} else {
- const MachOFormat::Section *Sect = getSection(DRI);
- Result = Sect->Address;
+ macho::Section Sect = getSection(Sec);
+ Res = Sect.Address;
}
return object_error::success;
}
-error_code MachOObjectFile::getSectionSize(DataRefImpl DRI,
- uint64_t &Result) const {
+error_code
+MachOObjectFile::getSectionSize(DataRefImpl Sec, uint64_t &Res) const {
if (is64Bit()) {
- const MachOFormat::Section64 *Sect = getSection64(DRI);
- Result = Sect->Size;
+ macho::Section64 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 {
+error_code
+MachOObjectFile::getSectionContents(DataRefImpl Sec, StringRef &Res) const {
+ uint32_t Offset;
+ uint64_t Size;
+
if (is64Bit()) {
- const MachOFormat::Section64 *Sect = getSection64(DRI);
- Result = getData(Sect->Offset, Sect->Size);
+ macho::Section64 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 {
+error_code
+MachOObjectFile::getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const {
+ uint32_t Align;
if (is64Bit()) {
- const MachOFormat::Section64 *Sect = getSection64(DRI);
- Result = uint64_t(1) << Sect->Align;
+ macho::Section64 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 (is64Bit()) {
- 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;
- }
+error_code
+MachOObjectFile::isSectionText(DataRefImpl Sec, bool &Res) const {
+ uint32_t Flags = getSectionFlags(this, Sec);
+ Res = Flags & macho::SF_PureInstructions;
return object_error::success;
}
-error_code MachOObjectFile::isSectionData(DataRefImpl DRI,
- bool &Result) const {
+error_code MachOObjectFile::isSectionData(DataRefImpl DRI, bool &Result) const {
// FIXME: Unimplemented.
Result = false;
return object_error::success;
}
-error_code MachOObjectFile::isSectionBSS(DataRefImpl DRI,
- bool &Result) const {
+error_code MachOObjectFile::isSectionBSS(DataRefImpl DRI, bool &Result) const {
// FIXME: Unimplemented.
Result = false;
return object_error::success;
}
-error_code MachOObjectFile::isSectionRequiredForExecution(DataRefImpl Sec,
- bool &Result) const {
+error_code
+MachOObjectFile::isSectionRequiredForExecution(DataRefImpl Sec,
+ bool &Result) const {
// FIXME: Unimplemented.
Result = true;
return object_error::success;
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);
- }
-
+error_code
+MachOObjectFile::isSectionZeroInit(DataRefImpl Sec, bool &Res) const {
+ uint32_t Flags = getSectionFlags(this, Sec);
+ unsigned SectionType = Flags & MachO::SectionFlagMaskSectionType;
+ Res = SectionType == MachO::SectionTypeZeroFill ||
+ SectionType == MachO::SectionTypeZeroFillLarge;
return object_error::success;
}
return object_error::success;
}
-error_code MachOObjectFile::sectionContainsSymbol(DataRefImpl Sec,
- DataRefImpl Symb,
- bool &Result) const {
+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;
+ uint32_t Offset;
if (is64Bit()) {
- const MachOFormat::Section64 *Sect = getSection64(Sec);
- last_reloc = Sect->NumRelocationTableEntries;
+ macho::Section64 Sect = getSection64(Sec);
+ Offset = Sect.RelocationTableOffset;
} else {
- const MachOFormat::Section *Sect = getSection(Sec);
- last_reloc = Sect->NumRelocationTableEntries;
+ macho::Section Sect = getSection(Sec);
+ Offset = Sect.RelocationTableOffset;
}
- 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));
+ DataRefImpl Ret;
+ Ret.p = reinterpret_cast<uintptr_t>(getPtr(this, Offset));
+ return relocation_iterator(RelocationRef(Ret, this));
}
-/*===-- Relocations -------------------------------------------------------===*/
-
-const MachOFormat::RelocationEntry *
-MachOObjectFile::getRelocation(DataRefImpl Rel) const {
- uint32_t relOffset;
+relocation_iterator
+MachOObjectFile::getSectionRelEnd(DataRefImpl Sec) const {
+ uint32_t Offset;
+ uint32_t Num;
if (is64Bit()) {
- const MachOFormat::Section64 *Sect = getSection64(Sections[Rel.d.b]);
- relOffset = Sect->RelocationTableOffset;
+ macho::Section64 Sect = getSection64(Sec);
+ Offset = Sect.RelocationTableOffset;
+ Num = Sect.NumRelocationTableEntries;
} else {
- const MachOFormat::Section *Sect = getSection(Sections[Rel.d.b]);
- relOffset = Sect->RelocationTableOffset;
+ macho::Section Sect = getSection(Sec);
+ Offset = Sect.RelocationTableOffset;
+ Num = Sect.NumRelocationTableEntries;
}
- 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());
+
+ const macho::RelocationEntry *P =
+ reinterpret_cast<const macho::RelocationEntry*>(getPtr(this, Offset));
+
+ DataRefImpl Ret;
+ Ret.p = reinterpret_cast<uintptr_t>(P + Num);
+ return relocation_iterator(RelocationRef(Ret, this));
}
error_code MachOObjectFile::getRelocationNext(DataRefImpl Rel,
RelocationRef &Res) const {
- ++Rel.d.a;
+ const macho::RelocationEntry *P =
+ reinterpret_cast<const macho::RelocationEntry *>(Rel.p);
+ Rel.p = reinterpret_cast<uintptr_t>(P + 1);
Res = RelocationRef(Rel, this);
return object_error::success;
}
-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;
-
- Res = reinterpret_cast<uintptr_t>(sectAddress + RelAddr);
- return object_error::success;
+error_code
+MachOObjectFile::getRelocationAddress(DataRefImpl Rel, uint64_t &Res) const {
+ report_fatal_error("getRelocationAddress not implemented in MachOObjectFile");
}
-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;
+error_code MachOObjectFile::getRelocationOffset(DataRefImpl Rel,
+ uint64_t &Res) const {
+ macho::RelocationEntry 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;
- 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!");
- }
+error_code
+MachOObjectFile::getRelocationSymbol(DataRefImpl Rel, SymbolRef &Res) const {
+ macho::RelocationEntry RE = getRelocation(Rel);
+ uint32_t SymbolIdx = getPlainRelocationSymbolNum(RE);
+ bool isExtern = getPlainRelocationExternal(RE);
+ if (!isExtern) {
+ Res = *end_symbols();
+ return object_error::success;
}
+
+ macho::SymtabLoadCommand S = getSymtabLoadCommand();
+ unsigned SymbolTableEntrySize = is64Bit() ?
+ sizeof(macho::Symbol64TableEntry) :
+ sizeof(macho::SymbolTableEntry);
+ uint64_t Offset = S.SymbolTableOffset + SymbolIdx * SymbolTableEntrySize;
+ DataRefImpl Sym;
+ Sym.p = reinterpret_cast<uintptr_t>(getPtr(this, Offset));
Res = SymbolRef(Sym, this);
return object_error::success;
}
+
error_code MachOObjectFile::getRelocationType(DataRefImpl Rel,
uint64_t &Res) const {
- const MachOFormat::RelocationEntry *RE = getRelocation(Rel);
- Res = RE->Word0;
- Res <<= 32;
- Res |= RE->Word1;
+ macho::RelocationEntry 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);
+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 > 6)
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[r_type];
+ res = Table[RType];
break;
}
case Triple::ppc: {
"PPC_RELOC_LO14_SECTDIFF",
"PPC_RELOC_LOCAL_SECTDIFF" };
- res = Table[r_type];
+ 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,
+error_code
+MachOObjectFile::getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const {
- const MachOFormat::RelocationEntry *RE = getRelocation(Rel);
+ macho::RelocationEntry 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);
+ printRelocationTargetName(this, RE, fmt);
fmt << "@GOT";
if (isPCRel) fmt << "PCREL";
break;
case macho::RIT_X86_64_Subtractor: { // X86_64_RELOC_SUBTRACTOR
DataRefImpl RelNext = Rel;
RelNext.d.a++;
- const MachOFormat::RelocationEntry *RENext = getRelocation(RelNext);
+ macho::RelocationEntry RENext = getRelocation(RelNext);
// X86_64_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;
+ unsigned RType = getAnyRelocationType(RENext);
if (RType != 0)
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);
+ printRelocationTargetName(this, RENext, fmt);
fmt << "-";
- printRelocationTargetName(RE, fmt);
+ printRelocationTargetName(this, RE, fmt);
break;
}
case macho::RIT_X86_64_TLV:
- printRelocationTargetName(RE, fmt);
+ printRelocationTargetName(this, RE, fmt);
fmt << "@TLV";
if (isPCRel) fmt << "P";
break;
case macho::RIT_X86_64_Signed1: // X86_64_RELOC_SIGNED1
- printRelocationTargetName(RE, fmt);
+ printRelocationTargetName(this, RE, fmt);
fmt << "-1";
break;
case macho::RIT_X86_64_Signed2: // X86_64_RELOC_SIGNED2
- printRelocationTargetName(RE, fmt);
+ printRelocationTargetName(this, RE, fmt);
fmt << "-2";
break;
case macho::RIT_X86_64_Signed4: // X86_64_RELOC_SIGNED4
- printRelocationTargetName(RE, fmt);
+ 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.
case macho::RIT_Difference: { // GENERIC_RELOC_SECTDIFF
DataRefImpl RelNext = Rel;
RelNext.d.a++;
- const MachOFormat::RelocationEntry *RENext = getRelocation(RelNext);
+ macho::RelocationEntry 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;
+ unsigned RType = getAnyRelocationType(RENext);
+
if (RType != 1)
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;
}
}
case macho::RIT_Generic_LocalDifference:{// GENERIC_RELOC_LOCAL_SECTDIFF
DataRefImpl RelNext = Rel;
RelNext.d.a++;
- const MachOFormat::RelocationEntry *RENext = getRelocation(RelNext);
+ macho::RelocationEntry 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;
+ unsigned RType = getAnyRelocationType(RENext);
if (RType != 1)
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);
+ 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_HalfDifference: { // 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);
+ macho::RelocationEntry 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;
-
+ unsigned RType = getAnyRelocationType(RENext);
if (RType != 1)
report_fatal_error("Expected ARM_RELOC_PAIR after "
"GENERIC_RELOC_HALF");
// symbol/section pointer of the follow-on relocation.
if (Type == macho::RIT_ARM_HalfDifference) {
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);
-
+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;
if (Type == macho::RIT_X86_64_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::RIT_X86_64_Subtractor)
+ Result = true;
}
}
report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
}
+symbol_iterator MachOObjectFile::begin_symbols() const {
+ DataRefImpl DRI;
+ if (!SymtabLoadCmd)
+ return symbol_iterator(SymbolRef(DRI, this));
+
+ macho::SymtabLoadCommand Symtab = getSymtabLoadCommand();
+ DRI.p = reinterpret_cast<uintptr_t>(getPtr(this, Symtab.SymbolTableOffset));
+ return symbol_iterator(SymbolRef(DRI, this));
+}
+
+symbol_iterator MachOObjectFile::end_symbols() const {
+ DataRefImpl DRI;
+ if (!SymtabLoadCmd)
+ return symbol_iterator(SymbolRef(DRI, this));
+
+ macho::SymtabLoadCommand Symtab = getSymtabLoadCommand();
+ unsigned SymbolTableEntrySize = is64Bit() ?
+ sizeof(macho::Symbol64TableEntry) :
+ sizeof(macho::SymbolTableEntry);
+ unsigned Offset = Symtab.SymbolTableOffset +
+ Symtab.NumSymbolTableEntries * SymbolTableEntrySize;
+ DRI.p = reinterpret_cast<uintptr_t>(getPtr(this, Offset));
+ return symbol_iterator(SymbolRef(DRI, this));
+}
+
+symbol_iterator MachOObjectFile::begin_dynamic_symbols() const {
+ // TODO: implement
+ report_fatal_error("Dynamic symbols unimplemented in MachOObjectFile");
+}
+
+symbol_iterator MachOObjectFile::end_dynamic_symbols() const {
+ // TODO: implement
+ report_fatal_error("Dynamic symbols unimplemented in MachOObjectFile");
+}
+
+section_iterator MachOObjectFile::begin_sections() const {
+ DataRefImpl DRI;
+ return section_iterator(SectionRef(DRI, this));
+}
+
+section_iterator MachOObjectFile::end_sections() const {
+ DataRefImpl DRI;
+ DRI.d.a = Sections.size();
+ return section_iterator(SectionRef(DRI, this));
+}
+
+library_iterator MachOObjectFile::begin_libraries_needed() const {
+ // TODO: implement
+ report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
+}
-/*===-- Miscellaneous -----------------------------------------------------===*/
+library_iterator MachOObjectFile::end_libraries_needed() 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) {
+ switch (CPUType) {
case llvm::MachO::CPUTypeI386:
return "Mach-O 32-bit i386";
case llvm::MachO::CPUTypeARM:
case llvm::MachO::CPUTypePowerPC:
return "Mach-O 32-bit ppc";
default:
- assert((getHeader()->CPUType & llvm::MachO::CPUArchABI64) == 0 &&
+ assert((CPUType & llvm::MachO::CPUArchABI64) == 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)
+ assert((CPUType & llvm::MachO::CPUArchABI64)
== llvm::MachO::CPUArchABI64 &&
"32-bit object file when we're 64-bit?");
- switch (getHeader()->CPUType) {
+ switch (CPUType) {
case llvm::MachO::CPUTypeX86_64:
return "Mach-O 64-bit x86-64";
case llvm::MachO::CPUTypePowerPC64:
}
unsigned MachOObjectFile::getArch() const {
- switch (getHeader()->CPUType) {
+ switch (getCPUType(this)) {
case llvm::MachO::CPUTypeI386:
return Triple::x86;
case llvm::MachO::CPUTypeX86_64:
}
}
+StringRef MachOObjectFile::getLoadName() const {
+ // TODO: Implement
+ report_fatal_error("get_load_name() unimplemented in MachOObjectFile");
+}
+
+relocation_iterator MachOObjectFile::getSectionRelBegin(unsigned Index) const {
+ DataRefImpl DRI;
+ DRI.d.a = Index;
+ return getSectionRelBegin(DRI);
+}
+
+relocation_iterator MachOObjectFile::getSectionRelEnd(unsigned Index) const {
+ DataRefImpl DRI;
+ DRI.d.a = Index;
+ return getSectionRelEnd(DRI);
+}
+
+StringRef
+MachOObjectFile::getSectionFinalSegmentName(DataRefImpl Sec) const {
+ ArrayRef<char> Raw = getSectionRawFinalSegmentName(Sec);
+ return parseSegmentOrSectionName(Raw.data());
+}
+
+ArrayRef<char>
+MachOObjectFile::getSectionRawName(DataRefImpl Sec) const {
+ const SectionBase *Base =
+ reinterpret_cast<const SectionBase*>(Sections[Sec.d.a]);
+ return ArrayRef<char>(Base->Name);
+}
+
+ArrayRef<char>
+MachOObjectFile::getSectionRawFinalSegmentName(DataRefImpl Sec) const {
+ const SectionBase *Base =
+ reinterpret_cast<const SectionBase*>(Sections[Sec.d.a]);
+ return ArrayRef<char>(Base->SegmentName);
+}
+
+bool
+MachOObjectFile::isRelocationScattered(const macho::RelocationEntry &RE)
+ const {
+ if (getCPUType(this) == llvm::MachO::CPUTypeX86_64)
+ return false;
+ return getPlainRelocationAddress(RE) & macho::RF_Scattered;
+}
+
+unsigned MachOObjectFile::getPlainRelocationSymbolNum(const macho::RelocationEntry &RE) const {
+ if (isLittleEndian())
+ return RE.Word1 & 0xffffff;
+ return RE.Word1 >> 8;
+}
+
+bool MachOObjectFile::getPlainRelocationExternal(const macho::RelocationEntry &RE) const {
+ if (isLittleEndian())
+ return (RE.Word1 >> 27) & 1;
+ return (RE.Word1 >> 4) & 1;
+}
+
+bool
+MachOObjectFile::getScatteredRelocationScattered(const macho::RelocationEntry &RE) const {
+ return RE.Word0 >> 31;
+}
+
+uint32_t
+MachOObjectFile::getScatteredRelocationValue(const macho::RelocationEntry &RE) const {
+ return RE.Word1;
+}
+
+unsigned
+MachOObjectFile::getAnyRelocationAddress(const macho::RelocationEntry &RE) const {
+ if (isRelocationScattered(RE))
+ return getScatteredRelocationAddress(RE);
+ return getPlainRelocationAddress(RE);
+}
+
+unsigned
+MachOObjectFile::getAnyRelocationPCRel(const macho::RelocationEntry &RE) const {
+ if (isRelocationScattered(RE))
+ return getScatteredRelocationPCRel(this, RE);
+ return getPlainRelocationPCRel(this, RE);
+}
+
+unsigned
+MachOObjectFile::getAnyRelocationLength(const macho::RelocationEntry &RE) const {
+ if (isRelocationScattered(RE))
+ return getScatteredRelocationLength(RE);
+ return getPlainRelocationLength(this, RE);
+}
+
+unsigned
+MachOObjectFile::getAnyRelocationType(const macho::RelocationEntry &RE) const {
+ if (isRelocationScattered(RE))
+ return getScatteredRelocationType(RE);
+ return getPlainRelocationType(this, RE);
+}
+
+SectionRef
+MachOObjectFile::getRelocationSection(const macho::RelocationEntry &RE) const {
+ if (isRelocationScattered(RE) || getPlainRelocationExternal(RE))
+ return *end_sections();
+ 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() ? macho::Header64Size : macho::Header32Size;
+ Load.Ptr = getPtr(this, HeaderSize);
+ Load.C = getStruct<macho::LoadCommand>(this, Load.Ptr);
+ return Load;
+}
+
+MachOObjectFile::LoadCommandInfo
+MachOObjectFile::getNextLoadCommandInfo(const LoadCommandInfo &L) const {
+ MachOObjectFile::LoadCommandInfo Next;
+ Next.Ptr = L.Ptr + L.C.Size;
+ Next.C = getStruct<macho::LoadCommand>(this, Next.Ptr);
+ return Next;
+}
+
+macho::Section MachOObjectFile::getSection(DataRefImpl DRI) const {
+ return getStruct<macho::Section>(this, Sections[DRI.d.a]);
+}
+
+macho::Section64 MachOObjectFile::getSection64(DataRefImpl DRI) const {
+ return getStruct<macho::Section64>(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::Section64 MachOObjectFile::getSection64(const LoadCommandInfo &L,
+ unsigned Index) const {
+ const char *Sec = getSectionPtr(this, L, Index);
+ return getStruct<macho::Section64>(this, Sec);
+}
+
+macho::SymbolTableEntry
+MachOObjectFile::getSymbolTableEntry(DataRefImpl DRI) const {
+ const char *P = reinterpret_cast<const char *>(DRI.p);
+ return getStruct<macho::SymbolTableEntry>(this, P);
+}
+
+macho::Symbol64TableEntry
+MachOObjectFile::getSymbol64TableEntry(DataRefImpl DRI) const {
+ const char *P = reinterpret_cast<const char *>(DRI.p);
+ return getStruct<macho::Symbol64TableEntry>(this, P);
+}
+
+macho::LinkeditDataLoadCommand
+MachOObjectFile::getLinkeditDataLoadCommand(const MachOObjectFile::LoadCommandInfo &L) const {
+ return getStruct<macho::LinkeditDataLoadCommand>(this, L.Ptr);
+}
+
+macho::SegmentLoadCommand
+MachOObjectFile::getSegmentLoadCommand(const LoadCommandInfo &L) const {
+ return getStruct<macho::SegmentLoadCommand>(this, L.Ptr);
+}
+
+macho::Segment64LoadCommand
+MachOObjectFile::getSegment64LoadCommand(const LoadCommandInfo &L) const {
+ return getStruct<macho::Segment64LoadCommand>(this, L.Ptr);
+}
+
+macho::LinkerOptionsLoadCommand
+MachOObjectFile::getLinkerOptionsLoadCommand(const LoadCommandInfo &L) const {
+ return getStruct<macho::LinkerOptionsLoadCommand>(this, L.Ptr);
+}
+
+macho::RelocationEntry
+MachOObjectFile::getRelocation(DataRefImpl Rel) const {
+ const char *P = reinterpret_cast<const char *>(Rel.p);
+ return getStruct<macho::RelocationEntry>(this, P);
+}
+
+macho::Header MachOObjectFile::getHeader() const {
+ return getStruct<macho::Header>(this, getPtr(this, 0));
+}
+
+macho::Header64Ext MachOObjectFile::getHeader64Ext() const {
+ return
+ getStruct<macho::Header64Ext>(this, getPtr(this, sizeof(macho::Header)));
+}
+
+macho::IndirectSymbolTableEntry MachOObjectFile::getIndirectSymbolTableEntry(
+ const macho::DysymtabLoadCommand &DLC,
+ unsigned Index) const {
+ uint64_t Offset = DLC.IndirectSymbolTableOffset +
+ Index * sizeof(macho::IndirectSymbolTableEntry);
+ return getStruct<macho::IndirectSymbolTableEntry>(this, getPtr(this, Offset));
+}
+
+macho::DataInCodeTableEntry
+MachOObjectFile::getDataInCodeTableEntry(uint32_t DataOffset,
+ unsigned Index) const {
+ uint64_t Offset = DataOffset + Index * sizeof(macho::DataInCodeTableEntry);
+ return getStruct<macho::DataInCodeTableEntry>(this, getPtr(this, Offset));
+}
+
+macho::SymtabLoadCommand MachOObjectFile::getSymtabLoadCommand() const {
+ return getStruct<macho::SymtabLoadCommand>(this, SymtabLoadCmd);
+}
+
+macho::DysymtabLoadCommand MachOObjectFile::getDysymtabLoadCommand() const {
+ return getStruct<macho::DysymtabLoadCommand>(this, DysymtabLoadCmd);
+}
+
+StringRef MachOObjectFile::getStringTableData() const {
+ macho::SymtabLoadCommand S = getSymtabLoadCommand();
+ return getData().substr(S.StringTableOffset, S.StringTableSize);
+}
+
+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);
+ }
+}
+
+ObjectFile *ObjectFile::createMachOObjectFile(MemoryBuffer *Buffer) {
+ StringRef Magic = Buffer->getBuffer().slice(0, 4);
+ error_code ec;
+ ObjectFile *Ret;
+ if (Magic == "\xFE\xED\xFA\xCE")
+ Ret = new MachOObjectFile(Buffer, false, false, ec);
+ else if (Magic == "\xCE\xFA\xED\xFE")
+ Ret = new MachOObjectFile(Buffer, true, false, ec);
+ else if (Magic == "\xFE\xED\xFA\xCF")
+ Ret = new MachOObjectFile(Buffer, false, true, ec);
+ else if (Magic == "\xCF\xFA\xED\xFE")
+ Ret = new MachOObjectFile(Buffer, true, true, ec);
+ else
+ return NULL;
+
+ if (ec)
+ return NULL;
+ return Ret;
+}
+
} // end namespace object
} // end namespace llvm
projects / oota-llvm.git / blobdiff