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-rw-r--r--lib/Object/MachOObjectFile.cpp1461
1 files changed, 1379 insertions, 82 deletions
diff --git a/lib/Object/MachOObjectFile.cpp b/lib/Object/MachOObjectFile.cpp
index 192e7555b4..f5910dd95d 100644
--- a/lib/Object/MachOObjectFile.cpp
+++ b/lib/Object/MachOObjectFile.cpp
@@ -15,9 +15,9 @@
#include "llvm/Object/MachO.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Object/MachOFormat.h"
-#include "llvm/Support/Casting.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>
@@ -29,98 +29,222 @@ using namespace object;
namespace llvm {
namespace object {
-MachOObjectFileBase::MachOObjectFileBase(MemoryBuffer *Object,
- bool IsLittleEndian, bool Is64bits,
- error_code &ec)
- : ObjectFile(getMachOType(IsLittleEndian, Is64bits), Object) {
+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);
}
-bool MachOObjectFileBase::is64Bit() const {
- return isa<MachOObjectFileLE64>(this) || isa<MachOObjectFileBE64>(this);
+template<typename T>
+static void SwapStruct(T &Value);
+
+template<>
+void SwapStruct(macho::RelocationEntry &H) {
+ SwapValue(H.Word0);
+ SwapValue(H.Word1);
}
-void MachOObjectFileBase::ReadULEB128s(uint64_t Index,
- SmallVectorImpl<uint64_t> &Out) const {
- DataExtractor extractor(ObjectFile::getData(), true, 0);
+template<>
+void SwapStruct(macho::LoadCommand &L) {
+ SwapValue(L.Type);
+ SwapValue(L.Size);
+}
- uint32_t offset = Index;
- uint64_t data = 0;
- while (uint64_t delta = extractor.getULEB128(&offset)) {
- data += delta;
- Out.push_back(data);
- }
+template<>
+void SwapStruct(SymbolTableEntryBase &S) {
+ SwapValue(S.StringIndex);
+ SwapValue(S.Flags);
}
-unsigned MachOObjectFileBase::getHeaderSize() const {
- return is64Bit() ? macho::Header64Size : macho::Header32Size;
+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);
}
-StringRef MachOObjectFileBase::getData(size_t Offset, size_t Size) const {
- return ObjectFile::getData().substr(Offset, Size);
+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);
}
-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 MachOObjectFileBE32(Buffer, ec);
- else if (Magic == "\xCE\xFA\xED\xFE")
- Ret = new MachOObjectFileLE32(Buffer, ec);
- else if (Magic == "\xFE\xED\xFA\xCF")
- Ret = new MachOObjectFileBE64(Buffer, ec);
- else if (Magic == "\xCF\xFA\xED\xFE")
- Ret = new MachOObjectFileLE64(Buffer, ec);
- else
- return NULL;
+template<>
+void SwapStruct(macho::SymbolTableEntry &S) {
+ SwapValue(S.StringIndex);
+ SwapValue(S.Flags);
+ SwapValue(S.Value);
+}
- if (ec)
- return NULL;
- return Ret;
+template<>
+void SwapStruct(macho::Symbol64TableEntry &S) {
+ SwapValue(S.StringIndex);
+ SwapValue(S.Flags);
+ SwapValue(S.Value);
}
-/*===-- Symbols -----------------------------------------------------------===*/
+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);
+}
-error_code MachOObjectFileBase::getSymbolValue(DataRefImpl Symb,
- uint64_t &Val) const {
- report_fatal_error("getSymbolValue unimplemented in MachOObjectFileBase");
+template<>
+void SwapStruct(macho::SymtabLoadCommand &C) {
+ SwapValue(C.Type);
+ SwapValue(C.Size);
+ SwapValue(C.SymbolTableOffset);
+ SwapValue(C.NumSymbolTableEntries);
+ SwapValue(C.StringTableOffset);
+ SwapValue(C.StringTableSize);
}
-symbol_iterator MachOObjectFileBase::begin_dynamic_symbols() const {
- // TODO: implement
- report_fatal_error("Dynamic symbols unimplemented in MachOObjectFileBase");
+template<>
+void SwapStruct(macho::LinkeditDataLoadCommand &C) {
+ SwapValue(C.Type);
+ SwapValue(C.Size);
+ SwapValue(C.DataOffset);
+ SwapValue(C.DataSize);
}
-symbol_iterator MachOObjectFileBase::end_dynamic_symbols() const {
- // TODO: implement
- report_fatal_error("Dynamic symbols unimplemented in MachOObjectFileBase");
+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);
}
-library_iterator MachOObjectFileBase::begin_libraries_needed() const {
- // TODO: implement
- report_fatal_error("Needed libraries unimplemented in MachOObjectFileBase");
+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);
}
-library_iterator MachOObjectFileBase::end_libraries_needed() const {
- // TODO: implement
- report_fatal_error("Needed libraries unimplemented in MachOObjectFileBase");
+static bool isSwappedEndian(const MachOObjectFile *O) {
+ return O->isLittleEndian() != sys::IsLittleEndianHost;
}
-StringRef MachOObjectFileBase::getLoadName() const {
- // TODO: Implement
- report_fatal_error("get_load_name() unimplemented in MachOObjectFileBase");
+static macho::SegmentLoadCommand
+getSegmentLoadCommand(const MachOObjectFile *O,
+ const MachOObjectFile::LoadCommandInfo &L) {
+ macho::SegmentLoadCommand Cmd;
+ memcpy(&Cmd, L.Ptr, sizeof(macho::SegmentLoadCommand));
+ if (isSwappedEndian(O))
+ SwapStruct(Cmd);
+ return Cmd;
+}
+
+static macho::Segment64LoadCommand
+getSegment64LoadCommand(const MachOObjectFile *O,
+ const MachOObjectFile::LoadCommandInfo &L) {
+ macho::Segment64LoadCommand Cmd;
+ memcpy(&Cmd, L.Ptr, sizeof(macho::Segment64LoadCommand));
+ if (isSwappedEndian(O))
+ SwapStruct(Cmd);
+ return Cmd;
+}
+
+static uint32_t
+getSegmentLoadCommandNumSections(const MachOObjectFile *O,
+ const MachOObjectFile::LoadCommandInfo &L) {
+ if (O->is64Bit()) {
+ macho::Segment64LoadCommand S = getSegment64LoadCommand(O, L);
+ return S.NumSections;
+ }
+ macho::SegmentLoadCommand S = getSegmentLoadCommand(O, L);
+ return S.NumSections;
}
-/*===-- Sections ----------------------------------------------------------===*/
+static const SectionBase *
+getSectionBase(const MachOObjectFile *O, MachOObjectFile::LoadCommandInfo L,
+ unsigned Sec) {
+ uintptr_t CommandAddr = reinterpret_cast<uintptr_t>(L.Ptr);
-std::size_t MachOObjectFileBase::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);
+ 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 SectionBase*>(SectionAddr);
+}
+
+static const char *getPtr(const MachOObjectFile *O, size_t Offset) {
+ return O->getData().substr(Offset, 1).data();
+}
+
+static const char *getSymbolTableEntryPtr(const MachOObjectFile *O,
+ DataRefImpl DRI) {
+ macho::SymtabLoadCommand S = O->getSymtabLoadCommand();
+
+ unsigned Index = DRI.d.b;
+
+ unsigned SymbolTableEntrySize = O->is64Bit() ?
+ sizeof(macho::Symbol64TableEntry) :
+ sizeof(macho::SymbolTableEntry);
+
+ uint64_t Offset = S.SymbolTableOffset + Index * SymbolTableEntrySize;
+ return getPtr(O, Offset);
+}
+
+static SymbolTableEntryBase
+getSymbolTableEntryBase(const MachOObjectFile *O, DataRefImpl DRI) {
+ const char *P = getSymbolTableEntryPtr(O, DRI);
+ SymbolTableEntryBase Ret;
+ memcpy(&Ret, P, sizeof(SymbolTableEntryBase));
+ if (isSwappedEndian(O))
+ SwapStruct(Ret);
+
+ return Ret;
}
-StringRef MachOObjectFileBase::parseSegmentOrSectionName(const char *P) const {
+static StringRef parseSegmentOrSectionName(const char *P) {
if (P[15] == 0)
// Null terminated.
return P;
@@ -128,14 +252,470 @@ StringRef MachOObjectFileBase::parseSegmentOrSectionName(const char *P) const {
return StringRef(P, 16);
}
-error_code MachOObjectFileBase::isSectionData(DataRefImpl DRI,
+// 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;
+}
+
+template<class T>
+static void advanceTo(T &it, size_t Val) {
+ if (error_code ec = advance(it, Val))
+ report_fatal_error(ec.message());
+}
+
+static unsigned getCPUType(const MachOObjectFile *O) {
+ return O->getHeader().CPUType;
+}
+
+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);
+
+ 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;
+ }
+
+ 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;
+}
+
+static uint32_t getPlainRelocationAddress(const macho::RelocationEntry &RE) {
+ return RE.Word0;
+}
+
+static unsigned
+getScatteredRelocationAddress(const macho::RelocationEntry &RE) {
+ return RE.Word0 & 0xffffff;
+}
+
+static bool getPlainRelocationPCRel(const MachOObjectFile *O,
+ const macho::RelocationEntry &RE) {
+ if (O->isLittleEndian())
+ return (RE.Word1 >> 24) & 1;
+ return (RE.Word1 >> 7) & 1;
+}
+
+static bool
+getScatteredRelocationPCRel(const MachOObjectFile *O,
+ const macho::RelocationEntry &RE) {
+ return (RE.Word0 >> 30) & 1;
+}
+
+static unsigned getPlainRelocationLength(const MachOObjectFile *O,
+ const macho::RelocationEntry &RE) {
+ if (O->isLittleEndian())
+ return (RE.Word1 >> 25) & 3;
+ return (RE.Word1 >> 5) & 3;
+}
+
+static unsigned
+getScatteredRelocationLength(const macho::RelocationEntry &RE) {
+ return (RE.Word0 >> 28) & 3;
+}
+
+static unsigned getPlainRelocationType(const MachOObjectFile *O,
+ const macho::RelocationEntry &RE) {
+ if (O->isLittleEndian())
+ return RE.Word1 >> 28;
+ return RE.Word1 & 0xf;
+}
+
+static unsigned getScatteredRelocationType(const macho::RelocationEntry &RE) {
+ return (RE.Word0 >> 24) & 0xf;
+}
+
+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;
+}
+
+MachOObjectFile::MachOObjectFile(MemoryBuffer *Object,
+ bool IsLittleEndian, bool Is64bits,
+ error_code &ec)
+ : ObjectFile(getMachOType(IsLittleEndian, Is64bits), Object),
+ SymtabLoadCmd(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 < LoadCommandCount; ++I) {
+ if (Load.C.Type == macho::LCT_Symtab) {
+ assert(!SymtabLoadCmd && "Multiple symbol tables");
+ SymtabLoadCmd = Load.Ptr;
+ }
+
+ if (Load.C.Type == SegmentLoadType) {
+ uint32_t NumSections = getSegmentLoadCommandNumSections(this, Load);
+ for (unsigned J = 0; J < NumSections; ++J) {
+ const SectionBase *Sec = getSectionBase(this, Load, J);
+ Sections.push_back(reinterpret_cast<const char*>(Sec));
+ }
+ }
+ Load = getNextLoadCommandInfo(Load);
+ }
+}
+
+error_code MachOObjectFile::getSymbolNext(DataRefImpl Symb,
+ SymbolRef &Res) const {
+ Symb.d.b++;
+ Res = SymbolRef(Symb, this);
+ return object_error::success;
+}
+
+error_code MachOObjectFile::getSymbolName(DataRefImpl Symb,
+ StringRef &Res) const {
+ macho::SymtabLoadCommand S = getSymtabLoadCommand();
+ const char *StringTable = getPtr(this, S.StringTableOffset);
+ SymbolTableEntryBase Entry = getSymbolTableEntryBase(this, Symb);
+ const char *Start = &StringTable[Entry.StringIndex];
+ Res = StringRef(Start);
+ return object_error::success;
+}
+
+error_code MachOObjectFile::getSymbolAddress(DataRefImpl Symb,
+ uint64_t &Res) const {
+ if (is64Bit()) {
+ macho::Symbol64TableEntry Entry = getSymbol64TableEntry(Symb);
+ Res = Entry.Value;
+ } else {
+ 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::getSymbolSize(DataRefImpl DRI,
+ uint64_t &Result) const {
+ uint64_t BeginOffset;
+ uint64_t EndOffset = 0;
+ uint8_t SectionIndex;
+
+ 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
+ macho::SymtabLoadCommand Symtab = getSymtabLoadCommand();
+ DRI.d.b = 0;
+ while (DRI.d.b <= Symtab.NumSymbolTableEntries) {
+ Entry = getSymbolTableEntryBase(this, DRI);
+ getSymbolAddress(DRI, Value);
+ if (Entry.SectionIndex == SectionIndex && Value > BeginOffset)
+ if (!EndOffset || Value < EndOffset)
+ EndOffset = Value;
+ DRI.d.b++;
+ }
+ if (!EndOffset) {
+ uint64_t Size;
+ 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::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:
+ Char = 'u';
+ break;
+ case macho::STT_Absolute:
+ case macho::STT_Section:
+ Char = 's';
+ break;
+ default:
+ Char = '?';
+ break;
+ }
+
+ if (Flags & (macho::STF_External | macho::STF_PrivateExtern))
+ Char = toupper(static_cast<unsigned char>(Char));
+ Res = Char;
+ return object_error::success;
+}
+
+error_code MachOObjectFile::getSymbolFlags(DataRefImpl DRI,
+ uint32_t &Result) const {
+ 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::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;
+ }
+
+ 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 {
+ SymbolTableEntryBase Entry = getSymbolTableEntryBase(this, Symb);
+ uint8_t index = Entry.SectionIndex;
+
+ if (index == 0) {
+ Res = end_sections();
+ } else {
+ DataRefImpl DRI;
+ DRI.d.a = index - 1;
+ Res = section_iterator(SectionRef(DRI, this));
+ }
+
+ return object_error::success;
+}
+
+error_code MachOObjectFile::getSymbolValue(DataRefImpl Symb,
+ uint64_t &Val) const {
+ report_fatal_error("getSymbolValue unimplemented in MachOObjectFile");
+}
+
+error_code MachOObjectFile::getSectionNext(DataRefImpl Sec,
+ SectionRef &Res) const {
+ Sec.d.a++;
+ Res = SectionRef(Sec, this);
+ return object_error::success;
+}
+
+error_code
+MachOObjectFile::getSectionName(DataRefImpl Sec,
+ StringRef &Result) const {
+ ArrayRef<char> Raw = getSectionRawName(Sec);
+ Result = parseSegmentOrSectionName(Raw.data());
+ return object_error::success;
+}
+
+error_code
+MachOObjectFile::getSectionAddress(DataRefImpl Sec,
+ uint64_t &Res) const {
+ if (is64Bit()) {
+ macho::Section64 Sect = getSection64(Sec);
+ Res = Sect.Address;
+ } else {
+ macho::Section Sect = getSection(Sec);
+ Res = Sect.Address;
+ }
+ return object_error::success;
+}
+
+error_code
+MachOObjectFile::getSectionSize(DataRefImpl Sec,
+ uint64_t &Res) const {
+ if (is64Bit()) {
+ macho::Section64 Sect = getSection64(Sec);
+ Res = Sect.Size;
+ } else {
+ macho::Section Sect = getSection(Sec);
+ Res = Sect.Size;
+ }
+
+ return object_error::success;
+}
+
+error_code
+MachOObjectFile::getSectionContents(DataRefImpl Sec,
+ StringRef &Res) const {
+ uint32_t Offset;
+ uint64_t Size;
+
+ if (is64Bit()) {
+ macho::Section64 Sect = getSection64(Sec);
+ Offset = Sect.Offset;
+ Size = Sect.Size;
+ } else {
+ 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 Sec,
+ uint64_t &Res) const {
+ uint32_t Align;
+ if (is64Bit()) {
+ macho::Section64 Sect = getSection64(Sec);
+ Align = Sect.Align;
+ } else {
+ macho::Section Sect = getSection(Sec);
+ Align = Sect.Align;
+ }
+
+ Res = uint64_t(1) << Align;
+ return object_error::success;
+}
+
+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 {
// FIXME: Unimplemented.
Result = false;
return object_error::success;
}
-error_code MachOObjectFileBase::isSectionBSS(DataRefImpl DRI,
+error_code MachOObjectFile::isSectionBSS(DataRefImpl DRI,
bool &Result) const {
// FIXME: Unimplemented.
Result = false;
@@ -143,21 +723,30 @@ error_code MachOObjectFileBase::isSectionBSS(DataRefImpl DRI,
}
error_code
-MachOObjectFileBase::isSectionRequiredForExecution(DataRefImpl Sec,
+MachOObjectFile::isSectionRequiredForExecution(DataRefImpl Sec,
bool &Result) const {
// FIXME: Unimplemented.
Result = true;
return object_error::success;
}
-error_code MachOObjectFileBase::isSectionVirtual(DataRefImpl Sec,
+error_code MachOObjectFile::isSectionVirtual(DataRefImpl Sec,
bool &Result) const {
// FIXME: Unimplemented.
Result = false;
return object_error::success;
}
-error_code MachOObjectFileBase::isSectionReadOnlyData(DataRefImpl Sec,
+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;
+}
+
+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
@@ -168,44 +757,752 @@ error_code MachOObjectFileBase::isSectionReadOnlyData(DataRefImpl Sec,
return object_error::success;
}
-relocation_iterator MachOObjectFileBase::getSectionRelBegin(DataRefImpl Sec) const {
+error_code
+MachOObjectFile::sectionContainsSymbol(DataRefImpl Sec,
+ DataRefImpl Symb,
+ bool &Result) const {
+ SymbolRef::Type ST;
+ this->getSymbolType(Symb, ST);
+ if (ST == SymbolRef::ST_Unknown) {
+ Result = false;
+ return object_error::success;
+ }
+
+ uint64_t SectBegin, SectEnd;
+ getSectionAddress(Sec, SectBegin);
+ getSectionSize(Sec, SectEnd);
+ SectEnd += SectBegin;
+
+ 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);
+ ret.d.b = Sec.d.a;
return relocation_iterator(RelocationRef(ret, this));
}
+relocation_iterator
+MachOObjectFile::getSectionRelEnd(DataRefImpl Sec) const {
+ uint32_t LastReloc;
+ if (is64Bit()) {
+ macho::Section64 Sect = getSection64(Sec);
+ LastReloc = Sect.NumRelocationTableEntries;
+ } else {
+ macho::Section Sect = getSection(Sec);
+ LastReloc = Sect.NumRelocationTableEntries;
+ }
-/*===-- Relocations -------------------------------------------------------===*/
+ DataRefImpl Ret;
+ Ret.d.a = LastReloc;
+ Ret.d.b = Sec.d.a;
+ return relocation_iterator(RelocationRef(Ret, this));
+}
-error_code MachOObjectFileBase::getRelocationNext(DataRefImpl Rel,
+error_code MachOObjectFile::getRelocationNext(DataRefImpl Rel,
RelocationRef &Res) const {
++Rel.d.a;
Res = RelocationRef(Rel, this);
return object_error::success;
}
-error_code MachOObjectFileBase::getLibraryNext(DataRefImpl LibData,
- LibraryRef &Res) const {
- report_fatal_error("Needed libraries unimplemented in MachOObjectFileBase");
+error_code
+MachOObjectFile::getRelocationAddress(DataRefImpl Rel,
+ uint64_t &Res) const {
+ uint64_t SectAddress;
+ DataRefImpl Sec;
+ Sec.d.a = Rel.d.b;
+ if (is64Bit()) {
+ macho::Section64 Sect = getSection64(Sec);
+ SectAddress = Sect.Address;
+ } else {
+ macho::Section Sect = getSection(Sec);
+ SectAddress = Sect.Address;
+ }
+
+ macho::RelocationEntry RE = getRelocation(Rel);
+ uint64_t RelAddr = getAnyRelocationAddress(RE);
+ Res = SectAddress + RelAddr;
+ return object_error::success;
}
-error_code MachOObjectFileBase::getLibraryPath(DataRefImpl LibData,
- StringRef &Res) const {
- report_fatal_error("Needed libraries unimplemented in MachOObjectFileBase");
+error_code MachOObjectFile::getRelocationOffset(DataRefImpl Rel,
+ uint64_t &Res) const {
+ macho::RelocationEntry RE = getRelocation(Rel);
+ Res = getAnyRelocationAddress(RE);
+ return object_error::success;
}
-error_code MachOObjectFileBase::getRelocationAdditionalInfo(DataRefImpl Rel,
- int64_t &Res) const {
+error_code
+MachOObjectFile::getRelocationSymbol(DataRefImpl Rel,
+ SymbolRef &Res) const {
+ macho::RelocationEntry RE = getRelocation(Rel);
+ uint32_t SymbolIdx = getPlainRelocationSymbolNum(RE);
+ bool isExtern = getPlainRelocationExternal(RE);
+
+ DataRefImpl Sym;
+ if (isExtern) {
+ Sym.d.b = SymbolIdx;
+ }
+ Res = SymbolRef(Sym, this);
+ return object_error::success;
+}
+
+error_code MachOObjectFile::getRelocationType(DataRefImpl Rel,
+ uint64_t &Res) const {
+ macho::RelocationEntry RE = getRelocation(Rel);
+ Res = getAnyRelocationType(RE);
+ return object_error::success;
+}
+
+error_code
+MachOObjectFile::getRelocationTypeName(DataRefImpl Rel,
+ SmallVectorImpl<char> &Result) const {
+ StringRef res;
+ uint64_t RType;
+ getRelocationType(Rel, RType);
+
+ unsigned Arch = this->getArch();
+
+ switch (Arch) {
+ case Triple::x86: {
+ static const char *const Table[] = {
+ "GENERIC_RELOC_VANILLA",
+ "GENERIC_RELOC_PAIR",
+ "GENERIC_RELOC_SECTDIFF",
+ "GENERIC_RELOC_PB_LA_PTR",
+ "GENERIC_RELOC_LOCAL_SECTDIFF",
+ "GENERIC_RELOC_TLV" };
+
+ if (RType > 6)
+ res = "Unknown";
+ else
+ res = Table[RType];
+ break;
+ }
+ case Triple::x86_64: {
+ static const char *const Table[] = {
+ "X86_64_RELOC_UNSIGNED",
+ "X86_64_RELOC_SIGNED",
+ "X86_64_RELOC_BRANCH",
+ "X86_64_RELOC_GOT_LOAD",
+ "X86_64_RELOC_GOT",
+ "X86_64_RELOC_SUBTRACTOR",
+ "X86_64_RELOC_SIGNED_1",
+ "X86_64_RELOC_SIGNED_2",
+ "X86_64_RELOC_SIGNED_4",
+ "X86_64_RELOC_TLV" };
+
+ if (RType > 9)
+ res = "Unknown";
+ else
+ res = Table[RType];
+ break;
+ }
+ case Triple::arm: {
+ static const char *const Table[] = {
+ "ARM_RELOC_VANILLA",
+ "ARM_RELOC_PAIR",
+ "ARM_RELOC_SECTDIFF",
+ "ARM_RELOC_LOCAL_SECTDIFF",
+ "ARM_RELOC_PB_LA_PTR",
+ "ARM_RELOC_BR24",
+ "ARM_THUMB_RELOC_BR22",
+ "ARM_THUMB_32BIT_BRANCH",
+ "ARM_RELOC_HALF",
+ "ARM_RELOC_HALF_SECTDIFF" };
+
+ if (RType > 9)
+ res = "Unknown";
+ else
+ res = Table[RType];
+ break;
+ }
+ case Triple::ppc: {
+ static const char *const Table[] = {
+ "PPC_RELOC_VANILLA",
+ "PPC_RELOC_PAIR",
+ "PPC_RELOC_BR14",
+ "PPC_RELOC_BR24",
+ "PPC_RELOC_HI16",
+ "PPC_RELOC_LO16",
+ "PPC_RELOC_HA16",
+ "PPC_RELOC_LO14",
+ "PPC_RELOC_SECTDIFF",
+ "PPC_RELOC_PB_LA_PTR",
+ "PPC_RELOC_HI16_SECTDIFF",
+ "PPC_RELOC_LO16_SECTDIFF",
+ "PPC_RELOC_HA16_SECTDIFF",
+ "PPC_RELOC_JBSR",
+ "PPC_RELOC_LO14_SECTDIFF",
+ "PPC_RELOC_LOCAL_SECTDIFF" };
+
+ res = Table[RType];
+ break;
+ }
+ case Triple::UnknownArch:
+ res = "Unknown";
+ break;
+ }
+ Result.append(res.begin(), res.end());
+ return object_error::success;
+}
+
+error_code MachOObjectFile::getRelocationAdditionalInfo(DataRefImpl Rel,
+ int64_t &Res) const {
Res = 0;
return object_error::success;
}
+error_code
+MachOObjectFile::getRelocationValueString(DataRefImpl Rel,
+ SmallVectorImpl<char> &Result) const {
+ macho::RelocationEntry RE = getRelocation(Rel);
+
+ unsigned Arch = this->getArch();
+
+ std::string fmtbuf;
+ raw_string_ostream fmt(fmtbuf);
+ 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 = 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(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++;
+ 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 = 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(this, RENext, fmt);
+ fmt << "-";
+ printRelocationTargetName(this, RE, fmt);
+ break;
+ }
+ case macho::RIT_X86_64_TLV:
+ printRelocationTargetName(this, RE, fmt);
+ fmt << "@TLV";
+ if (isPCRel) fmt << "P";
+ break;
+ case macho::RIT_X86_64_Signed1: // X86_64_RELOC_SIGNED1
+ printRelocationTargetName(this, RE, fmt);
+ fmt << "-1";
+ break;
+ case macho::RIT_X86_64_Signed2: // X86_64_RELOC_SIGNED2
+ printRelocationTargetName(this, RE, fmt);
+ fmt << "-2";
+ break;
+ case macho::RIT_X86_64_Signed4: // X86_64_RELOC_SIGNED4
+ printRelocationTargetName(this, RE, fmt);
+ fmt << "-4";
+ break;
+ default:
+ printRelocationTarg