template<typename ELFT>
class ELFDumper : public ObjDumper {
public:
- ELFDumper(const ELFFile<ELFT> *Obj, StreamWriter &Writer)
- : ObjDumper(Writer), Obj(Obj) {}
+ ELFDumper(const ELFFile<ELFT> *Obj, StreamWriter &Writer);
void printFileHeaders() override;
void printSections() override;
void printNeededLibraries() override;
void printProgramHeaders() override;
void printHashTable() override;
+ void printLoadName() override;
void printAttributes() override;
void printMipsPLTGOT() override;
typedef ELFFile<ELFT> ELFO;
typedef typename ELFO::Elf_Shdr Elf_Shdr;
typedef typename ELFO::Elf_Sym Elf_Sym;
-
- void printSymbol(const Elf_Sym *Symbol, bool IsDynamic);
+ typedef typename ELFO::Elf_Dyn Elf_Dyn;
+ typedef typename ELFO::Elf_Dyn_Range Elf_Dyn_Range;
+ typedef typename ELFO::Elf_Rela Elf_Rela;
+ typedef typename ELFO::Elf_Rela_Range Elf_Rela_Range;
+ typedef typename ELFO::Elf_Phdr Elf_Phdr;
+ typedef typename ELFO::Elf_Hash Elf_Hash;
+ typedef typename ELFO::uintX_t uintX_t;
+
+ /// \brief Represents a region described by entries in the .dynamic table.
+ struct DynRegionInfo {
+ DynRegionInfo() : Addr(nullptr), Size(0), EntSize(0) {}
+ /// \brief Address in current address space.
+ const void *Addr;
+ /// \brief Size in bytes of the region.
+ uintX_t Size;
+ /// \brief Size of each entity in the region.
+ uintX_t EntSize;
+ };
+
+ void printSymbol(const Elf_Sym *Symbol, StringRef StrTable, bool IsDynamic);
void printRelocations(const Elf_Shdr *Sec);
void printRelocation(const Elf_Shdr *Sec, typename ELFO::Elf_Rela Rel);
+ void printValue(uint64_t Type, uint64_t Value);
+
+ const Elf_Rela *dyn_rela_begin() const;
+ const Elf_Rela *dyn_rela_end() const;
+ Elf_Rela_Range dyn_relas() const;
+ StringRef getDynamicString(uint64_t Offset) const;
+ const Elf_Dyn *dynamic_table_begin() const;
+ const Elf_Dyn *dynamic_table_end() const;
+ Elf_Dyn_Range dynamic_table() const {
+ return make_range(dynamic_table_begin(), dynamic_table_end());
+ }
const ELFO *Obj;
+ DynRegionInfo DynRelaRegion;
+ DynRegionInfo DynamicRegion;
+ StringRef DynamicStringTable;
+ StringRef SOName;
+ const Elf_Hash *HashTable = nullptr;
};
template <class T> T errorOrDefault(ErrorOr<T> Val, T Default = T()) {
template <typename ELFO>
static std::string getFullSymbolName(const ELFO &Obj,
const typename ELFO::Elf_Sym *Symbol,
- bool IsDynamic) {
- StringRef SymbolName = errorOrDefault(Obj.getSymbolName(Symbol, IsDynamic));
+ StringRef StrTable, bool IsDynamic) {
+ StringRef SymbolName = errorOrDefault(Symbol->getName(StrTable));
if (!IsDynamic)
return SymbolName;
bool IsDefault;
ErrorOr<StringRef> Version =
- Obj.getSymbolVersion(nullptr, &*Symbol, IsDefault);
+ Obj.getSymbolVersion(StrTable, &*Symbol, IsDefault);
if (Version) {
FullSymbolName += (IsDefault ? "@@" : "@");
FullSymbolName += *Version;
LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R6)
};
+template <typename ELFT>
+ELFDumper<ELFT>::ELFDumper(const ELFFile<ELFT> *Obj, StreamWriter &Writer)
+ : ObjDumper(Writer), Obj(Obj) {
+
+ SmallVector<const Elf_Phdr *, 4> LoadSegments;
+ for (const Elf_Phdr &Phdr : Obj->program_headers()) {
+ if (Phdr.p_type == ELF::PT_DYNAMIC) {
+ DynamicRegion.Addr = Obj->base() + Phdr.p_offset;
+ uint64_t Size = Phdr.p_filesz;
+ if (Size % sizeof(Elf_Dyn))
+ report_fatal_error("Invalid dynamic table size");
+ DynamicRegion.Size = Phdr.p_filesz;
+ continue;
+ }
+ if (Phdr.p_type != ELF::PT_LOAD || Phdr.p_filesz == 0)
+ continue;
+ LoadSegments.push_back(&Phdr);
+ }
+
+ auto toMappedAddr = [&](uint64_t VAddr) -> const uint8_t * {
+ const Elf_Phdr **I = std::upper_bound(
+ LoadSegments.begin(), LoadSegments.end(), VAddr, compareAddr<ELFT>);
+ if (I == LoadSegments.begin())
+ report_fatal_error("Virtual address is not in any segment");
+ --I;
+ const Elf_Phdr &Phdr = **I;
+ uint64_t Delta = VAddr - Phdr.p_vaddr;
+ if (Delta >= Phdr.p_filesz)
+ report_fatal_error("Virtual address is not in any segment");
+ return Obj->base() + Phdr.p_offset + Delta;
+ };
+
+ uint64_t SONameOffset = 0;
+ const char *StringTableBegin = nullptr;
+ uint64_t StringTableSize = 0;
+ for (const Elf_Dyn &Dyn : dynamic_table()) {
+ switch (Dyn.d_tag) {
+ case ELF::DT_HASH:
+ HashTable =
+ reinterpret_cast<const Elf_Hash *>(toMappedAddr(Dyn.getPtr()));
+ break;
+ case ELF::DT_RELA:
+ DynRelaRegion.Addr = toMappedAddr(Dyn.getPtr());
+ break;
+ case ELF::DT_RELASZ:
+ DynRelaRegion.Size = Dyn.getVal();
+ break;
+ case ELF::DT_RELAENT:
+ DynRelaRegion.EntSize = Dyn.getVal();
+ break;
+ case ELF::DT_SONAME:
+ SONameOffset = Dyn.getVal();
+ break;
+ case ELF::DT_STRTAB:
+ StringTableBegin = (const char *)toMappedAddr(Dyn.getPtr());
+ break;
+ case ELF::DT_STRSZ:
+ StringTableSize = Dyn.getVal();
+ break;
+ }
+ }
+ if (StringTableBegin)
+ DynamicStringTable = StringRef(StringTableBegin, StringTableSize);
+ if (SONameOffset)
+ SOName = getDynamicString(SONameOffset);
+}
+
+template <typename ELFT>
+const typename ELFDumper<ELFT>::Elf_Rela *
+ELFDumper<ELFT>::dyn_rela_begin() const {
+ if (DynRelaRegion.Size && DynRelaRegion.EntSize != sizeof(Elf_Rela))
+ report_fatal_error("Invalid relocation entry size");
+ return reinterpret_cast<const Elf_Rela *>(DynRelaRegion.Addr);
+}
+
+template <typename ELFT>
+const typename ELFDumper<ELFT>::Elf_Rela *
+ELFDumper<ELFT>::dyn_rela_end() const {
+ uint64_t Size = DynRelaRegion.Size;
+ if (Size % sizeof(Elf_Rela))
+ report_fatal_error("Invalid relocation table size");
+ return dyn_rela_begin() + Size / sizeof(Elf_Rela);
+}
+
+template <typename ELFT>
+typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const {
+ return make_range(dyn_rela_begin(), dyn_rela_end());
+}
+
+template <typename ELFT>
+const typename ELFDumper<ELFT>::Elf_Dyn *
+ELFDumper<ELFT>::dynamic_table_begin() const {
+ return reinterpret_cast<const Elf_Dyn *>(DynamicRegion.Addr);
+}
+
+template <typename ELFT>
+const typename ELFDumper<ELFT>::Elf_Dyn *
+ELFDumper<ELFT>::dynamic_table_end() const {
+ uint64_t Size = DynamicRegion.Size;
+ return dynamic_table_begin() + Size / sizeof(Elf_Dyn);
+}
+
template<class ELFT>
void ELFDumper<ELFT>::printFileHeaders() {
const typename ELFO::Elf_Ehdr *Header = Obj->getHeader();
if (opts::SectionSymbols) {
ListScope D(W, "Symbols");
+ const Elf_Shdr *Symtab = Obj->getDotSymtabSec();
+ ErrorOr<StringRef> StrTableOrErr = Obj->getStringTableForSymtab(*Symtab);
+ error(StrTableOrErr.getError());
+ StringRef StrTable = *StrTableOrErr;
+
for (const typename ELFO::Elf_Sym &Sym : Obj->symbols()) {
ErrorOr<const Elf_Shdr *> SymSec = Obj->getSection(&Sym);
if (!SymSec)
continue;
if (*SymSec == &Sec)
- printSymbol(&Sym, false);
+ printSymbol(&Sym, StrTable, false);
}
}
void ELFDumper<ELFT>::printDynamicRelocations() {
W.startLine() << "Dynamic Relocations {\n";
W.indent();
- for (const typename ELFO::Elf_Rela &Rel : Obj->dyn_relas()) {
+ for (const typename ELFO::Elf_Rela &Rel : dyn_relas()) {
SmallString<32> RelocName;
Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName);
StringRef SymbolName;
uint32_t SymIndex = Rel.getSymbol(Obj->isMips64EL());
const typename ELFO::Elf_Sym *Sym = Obj->dynamic_symbol_begin() + SymIndex;
- SymbolName = errorOrDefault(Obj->getSymbolName(Sym, true));
+ SymbolName = errorOrDefault(Sym->getName(DynamicStringTable));
if (opts::ExpandRelocs) {
DictScope Group(W, "Relocation");
W.printHex("Offset", Rel.r_offset);
TargetName = SecName.get();
} else if (Sym.first) {
const Elf_Shdr *SymTable = Sym.first;
- ErrorOr<const Elf_Shdr *> StrTableSec = Obj->getSection(SymTable->sh_link);
- error(StrTableSec.getError());
- ErrorOr<StringRef> StrTableOrErr = Obj->getStringTable(*StrTableSec);
+ ErrorOr<StringRef> StrTableOrErr = Obj->getStringTableForSymtab(*SymTable);
error(StrTableOrErr.getError());
TargetName = errorOrDefault(Sym.second->getName(*StrTableOrErr));
}
template<class ELFT>
void ELFDumper<ELFT>::printSymbols() {
ListScope Group(W, "Symbols");
+
+ const Elf_Shdr *Symtab = Obj->getDotSymtabSec();
+ ErrorOr<StringRef> StrTableOrErr = Obj->getStringTableForSymtab(*Symtab);
+ error(StrTableOrErr.getError());
+ StringRef StrTable = *StrTableOrErr;
for (const typename ELFO::Elf_Sym &Sym : Obj->symbols())
- printSymbol(&Sym, false);
+ printSymbol(&Sym, StrTable, false);
}
template<class ELFT>
void ELFDumper<ELFT>::printDynamicSymbols() {
ListScope Group(W, "DynamicSymbols");
+ const Elf_Shdr *Symtab = Obj->getDotDynSymSec();
+ ErrorOr<StringRef> StrTableOrErr = Obj->getStringTableForSymtab(*Symtab);
+ error(StrTableOrErr.getError());
+ StringRef StrTable = *StrTableOrErr;
for (const typename ELFO::Elf_Sym &Sym : Obj->dynamic_symbols())
- printSymbol(&Sym, true);
+ printSymbol(&Sym, StrTable, true);
}
template <class ELFT>
void ELFDumper<ELFT>::printSymbol(const typename ELFO::Elf_Sym *Symbol,
- bool IsDynamic) {
+ StringRef StrTable, bool IsDynamic) {
unsigned SectionIndex = 0;
StringRef SectionName;
getSectionNameIndex(*Obj, Symbol, SectionName, SectionIndex);
- std::string FullSymbolName = getFullSymbolName(*Obj, Symbol, IsDynamic);
+ std::string FullSymbolName =
+ getFullSymbolName(*Obj, Symbol, StrTable, IsDynamic);
DictScope D(W, "Symbol");
W.printNumber("Name", FullSymbolName, Symbol->st_name);
}
template <class ELFT>
-static const char *getDynamicString(const ELFFile<ELFT> &O, uint64_t Value) {
- const char *Ret = O.getDynamicString(Value);
- if (!Ret)
+StringRef ELFDumper<ELFT>::getDynamicString(uint64_t Value) const {
+ if (Value >= DynamicStringTable.size())
reportError("Invalid dynamic string table reference");
- return Ret;
+ return StringRef(DynamicStringTable.data() + Value);
}
template <class ELFT>
-static void printValue(const ELFFile<ELFT> *O, uint64_t Type, uint64_t Value,
- bool Is64, raw_ostream &OS) {
+void ELFDumper<ELFT>::printValue(uint64_t Type, uint64_t Value) {
+ raw_ostream &OS = W.getOStream();
switch (Type) {
case DT_PLTREL:
if (Value == DT_REL) {
OS << Value << " (bytes)";
break;
case DT_NEEDED:
- OS << "SharedLibrary (" << getDynamicString(*O, Value) << ")";
+ OS << "SharedLibrary (" << getDynamicString(Value) << ")";
break;
case DT_SONAME:
- OS << "LibrarySoname (" << getDynamicString(*O, Value) << ")";
+ OS << "LibrarySoname (" << getDynamicString(Value) << ")";
break;
case DT_RPATH:
case DT_RUNPATH:
- OS << getDynamicString(*O, Value);
+ OS << getDynamicString(Value);
break;
case DT_MIPS_FLAGS:
printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS);
template<class ELFT>
void ELFDumper<ELFT>::printDynamicTable() {
- auto DynTable = Obj->dynamic_table(true);
+ auto I = dynamic_table_begin();
+ auto E = dynamic_table_end();
+
+ if (I == E)
+ return;
- ptrdiff_t Total = std::distance(DynTable.begin(), DynTable.end());
+ --E;
+ while (I != E && E->getTag() == ELF::DT_NULL)
+ --E;
+ if (E->getTag() != ELF::DT_NULL)
+ ++E;
+ ++E;
+
+ ptrdiff_t Total = std::distance(I, E);
if (Total == 0)
return;
W.startLine()
<< " Tag" << (Is64 ? " " : " ") << "Type"
<< " " << "Name/Value\n";
- for (const auto &Entry : DynTable) {
+ while (I != E) {
+ const typename ELFO::Elf_Dyn &Entry = *I;
+ ++I;
W.startLine()
<< " "
<< format(Is64 ? "0x%016" PRIX64 : "0x%08" PRIX64, Entry.getTag())
<< " " << format("%-21s", getTypeString(Entry.getTag()));
- printValue(Obj, Entry.getTag(), Entry.getVal(), Is64, OS);
+ printValue(Entry.getTag(), Entry.getVal());
OS << "\n";
}
typedef std::vector<StringRef> LibsTy;
LibsTy Libs;
- for (const auto &Entry : Obj->dynamic_table())
+ for (const auto &Entry : dynamic_table())
if (Entry.d_tag == ELF::DT_NEEDED)
- Libs.push_back(getDynamicString(*Obj, Entry.d_un.d_val));
+ Libs.push_back(getDynamicString(Entry.d_un.d_val));
std::stable_sort(Libs.begin(), Libs.end());
template <typename ELFT>
void ELFDumper<ELFT>::printHashTable() {
DictScope D(W, "HashTable");
- auto HT = Obj->getHashTable();
- if (!HT)
+ if (!HashTable)
return;
- W.printNumber("Num Buckets", HT->nbucket);
- W.printNumber("Num Chains", HT->nchain);
- W.printList("Buckets", HT->buckets());
- W.printList("Chains", HT->chains());
+ W.printNumber("Num Buckets", HashTable->nbucket);
+ W.printNumber("Num Chains", HashTable->nchain);
+ W.printList("Buckets", HashTable->buckets());
+ W.printList("Chains", HashTable->chains());
+}
+
+template <typename ELFT> void ELFDumper<ELFT>::printLoadName() {
+ outs() << "LoadName: " << SOName << '\n';
}
template <class ELFT>
typedef object::ELFFile<ELFT> ObjectFile;
typedef typename ObjectFile::Elf_Shdr Elf_Shdr;
typedef typename ObjectFile::Elf_Sym Elf_Sym;
+ typedef typename ObjectFile::Elf_Dyn_Range Elf_Dyn_Range;
- MipsGOTParser(const ObjectFile *Obj, StreamWriter &W);
+ MipsGOTParser(const ObjectFile *Obj, Elf_Dyn_Range DynTable, StreamWriter &W);
void parseGOT();
void parsePLT();
void printGotEntry(uint64_t GotAddr, GOTIter BeginIt, GOTIter It);
void printGlobalGotEntry(uint64_t GotAddr, GOTIter BeginIt, GOTIter It,
- const Elf_Sym *Sym, bool IsDynamic);
+ const Elf_Sym *Sym, StringRef StrTable,
+ bool IsDynamic);
void printPLTEntry(uint64_t PLTAddr, GOTIter BeginIt, GOTIter It,
StringRef Purpose);
void printPLTEntry(uint64_t PLTAddr, GOTIter BeginIt, GOTIter It,
- const Elf_Sym *Sym);
+ StringRef StrTable, const Elf_Sym *Sym);
};
}
template <class ELFT>
-MipsGOTParser<ELFT>::MipsGOTParser(const ObjectFile *Obj, StreamWriter &W)
+MipsGOTParser<ELFT>::MipsGOTParser(const ObjectFile *Obj,
+ Elf_Dyn_Range DynTable, StreamWriter &W)
: Obj(Obj), W(W) {
- for (const auto &Entry : Obj->dynamic_table()) {
+ for (const auto &Entry : DynTable) {
switch (Entry.getTag()) {
case ELF::DT_PLTGOT:
DtPltGot = Entry.getVal();
return;
}
+ const Elf_Shdr *DynSymSec = Obj->getDotDynSymSec();
+ ErrorOr<StringRef> StrTable = Obj->getStringTableForSymtab(*DynSymSec);
+ error(StrTable.getError());
const Elf_Sym *DynSymBegin = Obj->dynamic_symbol_begin();
const Elf_Sym *DynSymEnd = Obj->dynamic_symbol_end();
std::size_t DynSymTotal = std::size_t(std::distance(DynSymBegin, DynSymEnd));
const Elf_Sym *GotDynSym = DynSymBegin + *DtGotSym;
for (; It != GotGlobalEnd; ++It) {
DictScope D(W, "Entry");
- printGlobalGotEntry(GOTShdr->sh_addr, GotBegin, It, GotDynSym++, true);
+ printGlobalGotEntry(GOTShdr->sh_addr, GotBegin, It, GotDynSym++,
+ *StrTable, true);
}
}
W.startLine() << "There is no .rel.plt section in the file.\n";
return;
}
+ ErrorOr<const Elf_Shdr *> SymTableOrErr =
+ Obj->getSection(PLTRelShdr->sh_link);
+ error(SymTableOrErr.getError());
+ ErrorOr<StringRef> StrTable = Obj->getStringTableForSymtab(**SymTableOrErr);
+ error(StrTable.getError());
GOTIter PLTBegin = makeGOTIter(*PLT, 0);
GOTIter PLTEnd = makeGOTIter(*PLT, getGOTTotal(*PLT));
RI != RE && It != PLTEnd; ++RI, ++It) {
const Elf_Sym *Sym =
Obj->getRelocationSymbol(&*PLTRelShdr, &*RI).second;
- printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, Sym);
+ printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, *StrTable, Sym);
}
break;
case ELF::SHT_RELA:
RI != RE && It != PLTEnd; ++RI, ++It) {
const Elf_Sym *Sym =
Obj->getRelocationSymbol(&*PLTRelShdr, &*RI).second;
- printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, Sym);
+ printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, *StrTable, Sym);
}
break;
}
template <class ELFT>
void MipsGOTParser<ELFT>::printGlobalGotEntry(uint64_t GotAddr, GOTIter BeginIt,
GOTIter It, const Elf_Sym *Sym,
+ StringRef StrTable,
bool IsDynamic) {
printGotEntry(GotAddr, BeginIt, It);
getSectionNameIndex(*Obj, Sym, SectionName, SectionIndex);
W.printHex("Section", SectionName, SectionIndex);
- std::string FullSymbolName = getFullSymbolName(*Obj, Sym, IsDynamic);
+ std::string FullSymbolName =
+ getFullSymbolName(*Obj, Sym, StrTable, IsDynamic);
W.printNumber("Name", FullSymbolName, Sym->st_name);
}
template <class ELFT>
void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, GOTIter BeginIt,
- GOTIter It, const Elf_Sym *Sym) {
+ GOTIter It, StringRef StrTable,
+ const Elf_Sym *Sym) {
DictScope D(W, "Entry");
int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry);
W.printHex("Address", PLTAddr + Offset);
getSectionNameIndex(*Obj, Sym, SectionName, SectionIndex);
W.printHex("Section", SectionName, SectionIndex);
- std::string FullSymbolName = getFullSymbolName(*Obj, Sym, true);
+ std::string FullSymbolName = getFullSymbolName(*Obj, Sym, StrTable, true);
W.printNumber("Name", FullSymbolName, Sym->st_name);
}
return;
}
- MipsGOTParser<ELFT> GOTParser(Obj, W);
+ MipsGOTParser<ELFT> GOTParser(Obj, dynamic_table(), W);
GOTParser.parseGOT();
GOTParser.parsePLT();
}
projects / oota-llvm.git / blobdiff