+namespace {
+template <class ELFT> class MipsGOTParser {
+public:
+ 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, Elf_Dyn_Range DynTable, StreamWriter &W);
+
+ void parseGOT();
+ void parsePLT();
+
+private:
+ typedef typename ObjectFile::Elf_Addr GOTEntry;
+ typedef typename ObjectFile::template ELFEntityIterator<const GOTEntry>
+ GOTIter;
+
+ const ObjectFile *Obj;
+ StreamWriter &W;
+ llvm::Optional<uint64_t> DtPltGot;
+ llvm::Optional<uint64_t> DtLocalGotNum;
+ llvm::Optional<uint64_t> DtGotSym;
+ llvm::Optional<uint64_t> DtMipsPltGot;
+ llvm::Optional<uint64_t> DtJmpRel;
+
+ std::size_t getGOTTotal(ArrayRef<uint8_t> GOT) const;
+ GOTIter makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum);
+
+ void printGotEntry(uint64_t GotAddr, GOTIter BeginIt, GOTIter It);
+ void printGlobalGotEntry(uint64_t GotAddr, GOTIter BeginIt, GOTIter It,
+ 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,
+ StringRef StrTable, const Elf_Sym *Sym);
+};
+}
+
+template <class ELFT>
+MipsGOTParser<ELFT>::MipsGOTParser(const ObjectFile *Obj,
+ Elf_Dyn_Range DynTable, StreamWriter &W)
+ : Obj(Obj), W(W) {
+ for (const auto &Entry : DynTable) {
+ switch (Entry.getTag()) {
+ case ELF::DT_PLTGOT:
+ DtPltGot = Entry.getVal();
+ break;
+ case ELF::DT_MIPS_LOCAL_GOTNO:
+ DtLocalGotNum = Entry.getVal();
+ break;
+ case ELF::DT_MIPS_GOTSYM:
+ DtGotSym = Entry.getVal();
+ break;
+ case ELF::DT_MIPS_PLTGOT:
+ DtMipsPltGot = Entry.getVal();
+ break;
+ case ELF::DT_JMPREL:
+ DtJmpRel = Entry.getVal();
+ break;
+ }
+ }
+}
+
+template <class ELFT> void MipsGOTParser<ELFT>::parseGOT() {
+ // See "Global Offset Table" in Chapter 5 in the following document
+ // for detailed GOT description.
+ // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf
+ if (!DtPltGot) {
+ W.startLine() << "Cannot find PLTGOT dynamic table tag.\n";
+ return;
+ }
+ if (!DtLocalGotNum) {
+ W.startLine() << "Cannot find MIPS_LOCAL_GOTNO dynamic table tag.\n";
+ return;
+ }
+ if (!DtGotSym) {
+ W.startLine() << "Cannot find MIPS_GOTSYM dynamic table tag.\n";
+ return;
+ }
+
+ const Elf_Shdr *GOTShdr = findSectionByAddress(Obj, *DtPltGot);
+ if (!GOTShdr) {
+ W.startLine() << "There is no .got section in the file.\n";
+ return;
+ }
+
+ ErrorOr<ArrayRef<uint8_t>> GOT = Obj->getSectionContents(GOTShdr);
+ if (!GOT) {
+ W.startLine() << "The .got section is empty.\n";
+ return;
+ }
+
+ if (*DtLocalGotNum > getGOTTotal(*GOT)) {
+ W.startLine() << "MIPS_LOCAL_GOTNO exceeds a number of GOT entries.\n";
+ 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));
+
+ if (*DtGotSym > DynSymTotal) {
+ W.startLine() << "MIPS_GOTSYM exceeds a number of dynamic symbols.\n";
+ return;
+ }
+
+ std::size_t GlobalGotNum = DynSymTotal - *DtGotSym;
+
+ if (*DtLocalGotNum + GlobalGotNum > getGOTTotal(*GOT)) {
+ W.startLine() << "Number of global GOT entries exceeds the size of GOT.\n";
+ return;
+ }
+
+ GOTIter GotBegin = makeGOTIter(*GOT, 0);
+ GOTIter GotLocalEnd = makeGOTIter(*GOT, *DtLocalGotNum);
+ GOTIter It = GotBegin;
+
+ DictScope GS(W, "Primary GOT");
+
+ W.printHex("Canonical gp value", GOTShdr->sh_addr + 0x7ff0);
+ {
+ ListScope RS(W, "Reserved entries");
+
+ {
+ DictScope D(W, "Entry");
+ printGotEntry(GOTShdr->sh_addr, GotBegin, It++);
+ W.printString("Purpose", StringRef("Lazy resolver"));
+ }
+
+ if (It != GotLocalEnd && (*It >> (sizeof(GOTEntry) * 8 - 1)) != 0) {
+ DictScope D(W, "Entry");
+ printGotEntry(GOTShdr->sh_addr, GotBegin, It++);
+ W.printString("Purpose", StringRef("Module pointer (GNU extension)"));
+ }
+ }
+ {
+ ListScope LS(W, "Local entries");
+ for (; It != GotLocalEnd; ++It) {
+ DictScope D(W, "Entry");
+ printGotEntry(GOTShdr->sh_addr, GotBegin, It);
+ }
+ }
+ {
+ ListScope GS(W, "Global entries");
+
+ GOTIter GotGlobalEnd = makeGOTIter(*GOT, *DtLocalGotNum + GlobalGotNum);
+ const Elf_Sym *GotDynSym = DynSymBegin + *DtGotSym;
+ for (; It != GotGlobalEnd; ++It) {
+ DictScope D(W, "Entry");
+ printGlobalGotEntry(GOTShdr->sh_addr, GotBegin, It, GotDynSym++,
+ *StrTable, true);
+ }
+ }
+
+ std::size_t SpecGotNum = getGOTTotal(*GOT) - *DtLocalGotNum - GlobalGotNum;
+ W.printNumber("Number of TLS and multi-GOT entries", uint64_t(SpecGotNum));
+}
+
+template <class ELFT> void MipsGOTParser<ELFT>::parsePLT() {
+ if (!DtMipsPltGot) {
+ W.startLine() << "Cannot find MIPS_PLTGOT dynamic table tag.\n";
+ return;
+ }
+ if (!DtJmpRel) {
+ W.startLine() << "Cannot find JMPREL dynamic table tag.\n";
+ return;
+ }
+
+ const Elf_Shdr *PLTShdr = findSectionByAddress(Obj, *DtMipsPltGot);
+ if (!PLTShdr) {
+ W.startLine() << "There is no .got.plt section in the file.\n";
+ return;
+ }
+ ErrorOr<ArrayRef<uint8_t>> PLT = Obj->getSectionContents(PLTShdr);
+ if (!PLT) {
+ W.startLine() << "The .got.plt section is empty.\n";
+ return;
+ }
+
+ const Elf_Shdr *PLTRelShdr = findSectionByAddress(Obj, *DtJmpRel);
+ if (!PLTShdr) {
+ 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));
+ GOTIter It = PLTBegin;
+
+ DictScope GS(W, "PLT GOT");
+ {
+ ListScope RS(W, "Reserved entries");
+ printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "PLT lazy resolver");
+ if (It != PLTEnd)
+ printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "Module pointer");
+ }
+ {
+ ListScope GS(W, "Entries");
+
+ switch (PLTRelShdr->sh_type) {
+ case ELF::SHT_REL:
+ for (const typename ObjectFile::Elf_Rel *RI = Obj->rel_begin(PLTRelShdr),
+ *RE = Obj->rel_end(PLTRelShdr);
+ RI != RE && It != PLTEnd; ++RI, ++It) {
+ const Elf_Sym *Sym =
+ Obj->getRelocationSymbol(&*PLTRelShdr, &*RI).second;
+ printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, *StrTable, Sym);
+ }
+ break;
+ case ELF::SHT_RELA:
+ for (const typename ObjectFile::Elf_Rela
+ *RI = Obj->rela_begin(PLTRelShdr),
+ *RE = Obj->rela_end(PLTRelShdr);
+ RI != RE && It != PLTEnd; ++RI, ++It) {
+ const Elf_Sym *Sym =
+ Obj->getRelocationSymbol(&*PLTRelShdr, &*RI).second;
+ printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, *StrTable, Sym);
+ }
+ break;
+ }
+ }
+}
+
+template <class ELFT>
+std::size_t MipsGOTParser<ELFT>::getGOTTotal(ArrayRef<uint8_t> GOT) const {
+ return GOT.size() / sizeof(GOTEntry);
+}
+
+template <class ELFT>
+typename MipsGOTParser<ELFT>::GOTIter
+MipsGOTParser<ELFT>::makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum) {
+ const char *Data = reinterpret_cast<const char *>(GOT.data());
+ return GOTIter(sizeof(GOTEntry), Data + EntryNum * sizeof(GOTEntry));
+}
+
+template <class ELFT>
+void MipsGOTParser<ELFT>::printGotEntry(uint64_t GotAddr, GOTIter BeginIt,
+ GOTIter It) {
+ int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry);
+ W.printHex("Address", GotAddr + Offset);
+ W.printNumber("Access", Offset - 0x7ff0);
+ W.printHex("Initial", *It);
+}
+
+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);
+
+ W.printHex("Value", Sym->st_value);
+ W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes));
+
+ unsigned SectionIndex = 0;
+ StringRef SectionName;
+ getSectionNameIndex(*Obj, Sym, SectionName, SectionIndex);
+ W.printHex("Section", SectionName, SectionIndex);
+
+ 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, StringRef Purpose) {
+ DictScope D(W, "Entry");
+ int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry);
+ W.printHex("Address", PLTAddr + Offset);
+ W.printHex("Initial", *It);
+ W.printString("Purpose", Purpose);
+}
+
+template <class ELFT>
+void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, GOTIter BeginIt,
+ 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);
+ W.printHex("Initial", *It);
+ W.printHex("Value", Sym->st_value);
+ W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes));
+
+ unsigned SectionIndex = 0;
+ StringRef SectionName;
+ getSectionNameIndex(*Obj, Sym, SectionName, SectionIndex);
+ W.printHex("Section", SectionName, SectionIndex);
+
+ std::string FullSymbolName = getFullSymbolName(*Obj, Sym, StrTable, true);
+ W.printNumber("Name", FullSymbolName, Sym->st_name);
+}
+
+template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() {
+ if (Obj->getHeader()->e_machine != EM_MIPS) {
+ W.startLine() << "MIPS PLT GOT is available for MIPS targets only.\n";
+ return;
+ }
+
+ MipsGOTParser<ELFT> GOTParser(Obj, dynamic_table(), W);
+ GOTParser.parseGOT();
+ GOTParser.parsePLT();
+}
+
+static const EnumEntry<unsigned> ElfMipsISAExtType[] = {
+ {"None", Mips::AFL_EXT_NONE},
+ {"Broadcom SB-1", Mips::AFL_EXT_SB1},
+ {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON},
+ {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2},
+ {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP},
+ {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3},
+ {"LSI R4010", Mips::AFL_EXT_4010},
+ {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E},
+ {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F},
+ {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A},
+ {"MIPS R4650", Mips::AFL_EXT_4650},
+ {"MIPS R5900", Mips::AFL_EXT_5900},
+ {"MIPS R10000", Mips::AFL_EXT_10000},
+ {"NEC VR4100", Mips::AFL_EXT_4100},
+ {"NEC VR4111/VR4181", Mips::AFL_EXT_4111},
+ {"NEC VR4120", Mips::AFL_EXT_4120},
+ {"NEC VR5400", Mips::AFL_EXT_5400},
+ {"NEC VR5500", Mips::AFL_EXT_5500},
+ {"RMI Xlr", Mips::AFL_EXT_XLR},
+ {"Toshiba R3900", Mips::AFL_EXT_3900}
+};
+
+static const EnumEntry<unsigned> ElfMipsASEFlags[] = {
+ {"DSP", Mips::AFL_ASE_DSP},
+ {"DSPR2", Mips::AFL_ASE_DSPR2},
+ {"Enhanced VA Scheme", Mips::AFL_ASE_EVA},
+ {"MCU", Mips::AFL_ASE_MCU},
+ {"MDMX", Mips::AFL_ASE_MDMX},
+ {"MIPS-3D", Mips::AFL_ASE_MIPS3D},
+ {"MT", Mips::AFL_ASE_MT},
+ {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS},
+ {"VZ", Mips::AFL_ASE_VIRT},
+ {"MSA", Mips::AFL_ASE_MSA},
+ {"MIPS16", Mips::AFL_ASE_MIPS16},
+ {"microMIPS", Mips::AFL_ASE_MICROMIPS},
+ {"XPA", Mips::AFL_ASE_XPA}
+};
+
+static const EnumEntry<unsigned> ElfMipsFpABIType[] = {
+ {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY},
+ {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE},
+ {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE},
+ {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT},
+ {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)",
+ Mips::Val_GNU_MIPS_ABI_FP_OLD_64},
+ {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX},
+ {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64},
+ {"Hard float compat (32-bit CPU, 64-bit FPU)",
+ Mips::Val_GNU_MIPS_ABI_FP_64A}
+};
+
+static const EnumEntry<unsigned> ElfMipsFlags1[] {
+ {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG},
+};
+
+static int getMipsRegisterSize(uint8_t Flag) {
+ switch (Flag) {
+ case Mips::AFL_REG_NONE:
+ return 0;
+ case Mips::AFL_REG_32:
+ return 32;
+ case Mips::AFL_REG_64:
+ return 64;
+ case Mips::AFL_REG_128:
+ return 128;
+ default:
+ return -1;
+ }
+}
+
+template <class ELFT> void ELFDumper<ELFT>::printMipsABIFlags() {
+ const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.abiflags");
+ if (!Shdr) {
+ W.startLine() << "There is no .MIPS.abiflags section in the file.\n";
+ return;
+ }
+ ErrorOr<ArrayRef<uint8_t>> Sec = Obj->getSectionContents(Shdr);
+ if (!Sec) {
+ W.startLine() << "The .MIPS.abiflags section is empty.\n";
+ return;
+ }
+ if (Sec->size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) {
+ W.startLine() << "The .MIPS.abiflags section has a wrong size.\n";
+ return;
+ }
+
+ auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec->data());
+
+ raw_ostream &OS = W.getOStream();
+ DictScope GS(W, "MIPS ABI Flags");
+
+ W.printNumber("Version", Flags->version);
+ W.startLine() << "ISA: ";
+ if (Flags->isa_rev <= 1)
+ OS << format("MIPS%u", Flags->isa_level);
+ else
+ OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev);
+ OS << "\n";
+ W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType));
+ W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags));
+ W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType));
+ W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size));
+ W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size));
+ W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size));
+ W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1));
+ W.printHex("Flags 2", Flags->flags2);
+}
+
+template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() {
+ const Elf_Shdr *Shdr = findSectionByName(*Obj, ".reginfo");
+ if (!Shdr) {
+ W.startLine() << "There is no .reginfo section in the file.\n";
+ return;
+ }
+ ErrorOr<ArrayRef<uint8_t>> Sec = Obj->getSectionContents(Shdr);
+ if (!Sec) {
+ W.startLine() << "The .reginfo section is empty.\n";
+ return;
+ }
+ if (Sec->size() != sizeof(Elf_Mips_RegInfo<ELFT>)) {
+ W.startLine() << "The .reginfo section has a wrong size.\n";
+ return;
+ }
+
+ auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec->data());
+
+ DictScope GS(W, "MIPS RegInfo");
+ W.printHex("GP", Reginfo->ri_gp_value);
+ W.printHex("General Mask", Reginfo->ri_gprmask);
+ W.printHex("Co-Proc Mask0", Reginfo->ri_cprmask[0]);
+ W.printHex("Co-Proc Mask1", Reginfo->ri_cprmask[1]);
+ W.printHex("Co-Proc Mask2", Reginfo->ri_cprmask[2]);
+ W.printHex("Co-Proc Mask3", Reginfo->ri_cprmask[3]);
+}
+
+template <class ELFT> void ELFDumper<ELFT>::printStackMap() const {
+ const typename ELFFile<ELFT>::Elf_Shdr *StackMapSection = nullptr;
+ for (const auto &Sec : Obj->sections()) {
+ ErrorOr<StringRef> Name = Obj->getSectionName(&Sec);
+ if (*Name == ".llvm_stackmaps") {
+ StackMapSection = &Sec;
+ break;
+ }
+ }
+
+ if (!StackMapSection)
+ return;
+
+ StringRef StackMapContents;
+ ErrorOr<ArrayRef<uint8_t>> StackMapContentsArray =
+ Obj->getSectionContents(StackMapSection);
+
+ prettyPrintStackMap(
+ llvm::outs(),
+ StackMapV1Parser<ELFT::TargetEndianness>(*StackMapContentsArray));
+}