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macho-dump: Add support for dumping symtab and dysymtab commands.
llvm-svn: 120204
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parent
44ac81f948
commit
38307b5ad4
@ -177,6 +177,47 @@ namespace macho {
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uint32_t Flags;
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};
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struct SymtabLoadCommand {
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uint32_t Type;
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uint32_t Size;
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uint32_t SymbolTableOffset;
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uint32_t NumSymbolTableEntries;
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uint32_t StringTableOffset;
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uint32_t StringTableSize;
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};
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struct DysymtabLoadCommand {
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uint32_t Type;
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uint32_t Size;
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uint32_t LocalSymbolIndex;
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uint32_t NumLocalSymbols;
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uint32_t ExternalSymbolsIndex;
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uint32_t NumExternalSymbols;
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uint32_t UndefinedSymbolsIndex;
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uint32_t NumUndefinedSymbols;
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uint32_t TOCOffset;
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uint32_t NumTOCEntries;
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uint32_t ModuleTableOffset;
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uint32_t NumModuleTableEntries;
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uint32_t ReferenceSymbolTableOffset;
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uint32_t NumReferencedSymbolTableEntries;
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uint32_t IndirectSymbolTableOffset;
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uint32_t NumIndirectSymbolTableEntries;
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uint32_t ExternalRelocationTableOffset;
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uint32_t NumExternalRelocationTableEntries;
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uint32_t LocalRelocationTableOffset;
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uint32_t NumLocalRelocationTableEntries;
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};
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/// @}
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// See <mach-o/nlist.h>.
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@ -119,6 +119,12 @@ public:
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void ReadSegment64LoadCommand(
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const LoadCommandInfo &LCI,
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InMemoryStruct<macho::Segment64LoadCommand> &Res) const;
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void ReadSymtabLoadCommand(
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const LoadCommandInfo &LCI,
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InMemoryStruct<macho::SymtabLoadCommand> &Res) const;
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void ReadDysymtabLoadCommand(
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const LoadCommandInfo &LCI,
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InMemoryStruct<macho::DysymtabLoadCommand> &Res) const;
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/// @}
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};
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@ -188,3 +188,45 @@ void MachOObject::ReadSegment64LoadCommand(const LoadCommandInfo &LCI,
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InMemoryStruct<macho::Segment64LoadCommand> &Res) const {
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ReadInMemoryStruct(*this, Buffer->getBuffer(), LCI.Offset, Res);
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}
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template<>
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static void SwapStruct(macho::SymtabLoadCommand &Value) {
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SwapValue(Value.Type);
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SwapValue(Value.Size);
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SwapValue(Value.SymbolTableOffset);
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SwapValue(Value.NumSymbolTableEntries);
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SwapValue(Value.StringTableOffset);
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SwapValue(Value.StringTableSize);
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}
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void MachOObject::ReadSymtabLoadCommand(const LoadCommandInfo &LCI,
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InMemoryStruct<macho::SymtabLoadCommand> &Res) const {
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ReadInMemoryStruct(*this, Buffer->getBuffer(), LCI.Offset, Res);
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}
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template<>
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static void SwapStruct(macho::DysymtabLoadCommand &Value) {
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SwapValue(Value.Type);
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SwapValue(Value.Size);
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SwapValue(Value.LocalSymbolIndex);
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SwapValue(Value.NumLocalSymbols);
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SwapValue(Value.ExternalSymbolsIndex);
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SwapValue(Value.NumExternalSymbols);
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SwapValue(Value.UndefinedSymbolsIndex);
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SwapValue(Value.NumUndefinedSymbols);
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SwapValue(Value.TOCOffset);
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SwapValue(Value.NumTOCEntries);
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SwapValue(Value.ModuleTableOffset);
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SwapValue(Value.NumModuleTableEntries);
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SwapValue(Value.ReferenceSymbolTableOffset);
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SwapValue(Value.NumReferencedSymbolTableEntries);
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SwapValue(Value.IndirectSymbolTableOffset);
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SwapValue(Value.NumIndirectSymbolTableEntries);
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SwapValue(Value.ExternalRelocationTableOffset);
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SwapValue(Value.NumExternalRelocationTableEntries);
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SwapValue(Value.LocalRelocationTableOffset);
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SwapValue(Value.NumLocalRelocationTableEntries);
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}
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void MachOObject::ReadDysymtabLoadCommand(const LoadCommandInfo &LCI,
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InMemoryStruct<macho::DysymtabLoadCommand> &Res) const {
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ReadInMemoryStruct(*this, Buffer->getBuffer(), LCI.Offset, Res);
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}
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@ -111,6 +111,52 @@ static int DumpSegment64Command(MachOObject &Obj,
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return 0;
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}
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static int DumpSymtabCommand(MachOObject &Obj,
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const MachOObject::LoadCommandInfo &LCI) {
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InMemoryStruct<macho::SymtabLoadCommand> SLC;
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Obj.ReadSymtabLoadCommand(LCI, SLC);
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if (!SLC)
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return Error("unable to read segment load command");
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outs() << " ('symoff', " << SLC->SymbolTableOffset << ")\n";
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outs() << " ('nsyms', " << SLC->NumSymbolTableEntries << ")\n";
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outs() << " ('stroff', " << SLC->StringTableOffset << ")\n";
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outs() << " ('strsize', " << SLC->StringTableSize << ")\n";
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return 0;
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}
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static int DumpDysymtabCommand(MachOObject &Obj,
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const MachOObject::LoadCommandInfo &LCI) {
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InMemoryStruct<macho::DysymtabLoadCommand> DLC;
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Obj.ReadDysymtabLoadCommand(LCI, DLC);
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if (!DLC)
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return Error("unable to read segment load command");
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outs() << " ('ilocalsym', " << DLC->LocalSymbolIndex << ")\n";
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outs() << " ('nlocalsym', " << DLC->NumLocalSymbols << ")\n";
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outs() << " ('iextdefsym', " << DLC->ExternalSymbolsIndex << ")\n";
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outs() << " ('nextdefsym', " << DLC->NumExternalSymbols << ")\n";
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outs() << " ('iundefsym', " << DLC->UndefinedSymbolsIndex << ")\n";
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outs() << " ('nundefsym', " << DLC->NumUndefinedSymbols << ")\n";
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outs() << " ('tocoff', " << DLC->TOCOffset << ")\n";
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outs() << " ('ntoc', " << DLC->NumTOCEntries << ")\n";
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outs() << " ('modtaboff', " << DLC->ModuleTableOffset << ")\n";
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outs() << " ('nmodtab', " << DLC->NumModuleTableEntries << ")\n";
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outs() << " ('extrefsymoff', " << DLC->ReferenceSymbolTableOffset << ")\n";
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outs() << " ('nextrefsyms', "
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<< DLC->NumReferencedSymbolTableEntries << ")\n";
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outs() << " ('indirectsymoff', " << DLC->IndirectSymbolTableOffset << ")\n";
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outs() << " ('nindirectsyms', "
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<< DLC->NumIndirectSymbolTableEntries << ")\n";
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outs() << " ('extreloff', " << DLC->ExternalRelocationTableOffset << ")\n";
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outs() << " ('nextrel', " << DLC->NumExternalRelocationTableEntries << ")\n";
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outs() << " ('locreloff', " << DLC->LocalRelocationTableOffset << ")\n";
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outs() << " ('nlocrel', " << DLC->NumLocalRelocationTableEntries << ")\n";
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return 0;
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}
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static int DumpLoadCommand(MachOObject &Obj, unsigned Index) {
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const MachOObject::LoadCommandInfo &LCI = Obj.getLoadCommandInfo(Index);
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int Res = 0;
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@ -125,6 +171,12 @@ static int DumpLoadCommand(MachOObject &Obj, unsigned Index) {
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case macho::LCT_Segment64:
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Res = DumpSegment64Command(Obj, LCI);
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break;
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case macho::LCT_Symtab:
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Res = DumpSymtabCommand(Obj, LCI);
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break;
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case macho::LCT_Dysymtab:
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Res = DumpDysymtabCommand(Obj, LCI);
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break;
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default:
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Warning("unknown load command: " + Twine(LCI.Command.Type));
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break;
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