//===----------------------------------------------------------------------===//
#include "llvm-objdump.h"
+#include "llvm/ADT/Optional.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Triple.h"
+#include "llvm/CodeGen/FaultMaps.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCDisassembler.h"
#include "llvm/MC/MCRelocationInfo.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/Object/Archive.h"
+#include "llvm/Object/ELFObjectFile.h"
#include "llvm/Object/COFF.h"
#include "llvm/Object/MachO.h"
#include "llvm/Object/ObjectFile.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
+#include "llvm/Support/Errc.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/GraphWriter.h"
Disassembled("d", cl::desc("Alias for --disassemble"),
cl::aliasopt(Disassemble));
+cl::opt<bool>
+llvm::DisassembleAll("disassemble-all",
+ cl::desc("Display assembler mnemonics for the machine instructions"));
+static cl::alias
+DisassembleAlld("D", cl::desc("Alias for --disassemble-all"),
+ cl::aliasopt(DisassembleAll));
+
cl::opt<bool>
llvm::Relocations("r", cl::desc("Display the relocation entries in the file"));
cl::opt<bool>
llvm::WeakBind("weak-bind", cl::desc("Display mach-o weak binding info"));
+cl::opt<bool>
+llvm::RawClangAST("raw-clang-ast",
+ cl::desc("Dump the raw binary contents of the clang AST section"));
+
static cl::opt<bool>
MachOOpt("macho", cl::desc("Use MachO specific object file parser"));
static cl::alias
SectionHeadersShorter("h", cl::desc("Alias for --section-headers"),
cl::aliasopt(SectionHeaders));
+cl::list<std::string>
+llvm::FilterSections("section", cl::desc("Operate on the specified sections only. "
+ "With -macho dump segment,section"));
+cl::alias
+static FilterSectionsj("j", cl::desc("Alias for --section"),
+ cl::aliasopt(llvm::FilterSections));
+
cl::list<std::string>
llvm::MAttrs("mattr",
cl::CommaSeparated,
llvm::PrivateHeaders("private-headers",
cl::desc("Display format specific file headers"));
+cl::opt<bool>
+llvm::FirstPrivateHeader("private-header",
+ cl::desc("Display only the first format specific file "
+ "header"));
+
static cl::alias
PrivateHeadersShort("p", cl::desc("Alias for --private-headers"),
cl::aliasopt(PrivateHeaders));
+cl::opt<bool>
+ llvm::PrintImmHex("print-imm-hex",
+ cl::desc("Use hex format for immediate values"));
+
+cl::opt<bool> PrintFaultMaps("fault-map-section",
+ cl::desc("Display contents of faultmap section"));
+
static StringRef ToolName;
-static int ReturnValue = EXIT_SUCCESS;
-bool llvm::error(std::error_code EC) {
+namespace {
+typedef std::function<bool(llvm::object::SectionRef const &)> FilterPredicate;
+
+class SectionFilterIterator {
+public:
+ SectionFilterIterator(FilterPredicate P,
+ llvm::object::section_iterator const &I,
+ llvm::object::section_iterator const &E)
+ : Predicate(P), Iterator(I), End(E) {
+ ScanPredicate();
+ }
+ const llvm::object::SectionRef &operator*() const { return *Iterator; }
+ SectionFilterIterator &operator++() {
+ ++Iterator;
+ ScanPredicate();
+ return *this;
+ }
+ bool operator!=(SectionFilterIterator const &Other) const {
+ return Iterator != Other.Iterator;
+ }
+
+private:
+ void ScanPredicate() {
+ while (Iterator != End && !Predicate(*Iterator)) {
+ ++Iterator;
+ }
+ }
+ FilterPredicate Predicate;
+ llvm::object::section_iterator Iterator;
+ llvm::object::section_iterator End;
+};
+
+class SectionFilter {
+public:
+ SectionFilter(FilterPredicate P, llvm::object::ObjectFile const &O)
+ : Predicate(P), Object(O) {}
+ SectionFilterIterator begin() {
+ return SectionFilterIterator(Predicate, Object.section_begin(),
+ Object.section_end());
+ }
+ SectionFilterIterator end() {
+ return SectionFilterIterator(Predicate, Object.section_end(),
+ Object.section_end());
+ }
+
+private:
+ FilterPredicate Predicate;
+ llvm::object::ObjectFile const &Object;
+};
+SectionFilter ToolSectionFilter(llvm::object::ObjectFile const &O) {
+ return SectionFilter([](llvm::object::SectionRef const &S) {
+ if(FilterSections.empty())
+ return true;
+ llvm::StringRef String;
+ std::error_code error = S.getName(String);
+ if (error)
+ return false;
+ return std::find(FilterSections.begin(),
+ FilterSections.end(),
+ String) != FilterSections.end();
+ },
+ O);
+}
+}
+
+void llvm::error(std::error_code EC) {
if (!EC)
- return false;
+ return;
+
+ errs() << ToolName << ": error reading file: " << EC.message() << ".\n";
+ errs().flush();
+ exit(1);
+}
- outs() << ToolName << ": error reading file: " << EC.message() << ".\n";
- outs().flush();
- ReturnValue = EXIT_FAILURE;
- return true;
+LLVM_ATTRIBUTE_NORETURN void llvm::report_error(StringRef File,
+ std::error_code EC) {
+ assert(EC);
+ errs() << ToolName << ": '" << File << "': " << EC.message() << ".\n";
+ exit(1);
}
static const Target *getTarget(const ObjectFile *Obj = nullptr) {
std::string Error;
const Target *TheTarget = TargetRegistry::lookupTarget(ArchName, TheTriple,
Error);
- if (!TheTarget) {
- errs() << ToolName << ": " << Error;
- return nullptr;
- }
+ if (!TheTarget)
+ report_fatal_error("can't find target: " + Error);
// Update the triple name and return the found target.
TripleName = TheTriple.getTriple();
return TheTarget;
}
-void llvm::DumpBytes(ArrayRef<uint8_t> bytes) {
- static const char hex_rep[] = "0123456789abcdef";
- SmallString<64> output;
+bool llvm::RelocAddressLess(RelocationRef a, RelocationRef b) {
+ return a.getOffset() < b.getOffset();
+}
- for (char i: bytes) {
- output.push_back(hex_rep[(i & 0xF0) >> 4]);
- output.push_back(hex_rep[i & 0xF]);
- output.push_back(' ');
+namespace {
+class PrettyPrinter {
+public:
+ virtual ~PrettyPrinter(){}
+ virtual void printInst(MCInstPrinter &IP, const MCInst *MI,
+ ArrayRef<uint8_t> Bytes, uint64_t Address,
+ raw_ostream &OS, StringRef Annot,
+ MCSubtargetInfo const &STI) {
+ outs() << format("%8" PRIx64 ":", Address);
+ if (!NoShowRawInsn) {
+ outs() << "\t";
+ dumpBytes(Bytes, outs());
+ }
+ IP.printInst(MI, outs(), "", STI);
+ }
+};
+PrettyPrinter PrettyPrinterInst;
+class HexagonPrettyPrinter : public PrettyPrinter {
+public:
+ void printLead(ArrayRef<uint8_t> Bytes, uint64_t Address,
+ raw_ostream &OS) {
+ uint32_t opcode =
+ (Bytes[3] << 24) | (Bytes[2] << 16) | (Bytes[1] << 8) | Bytes[0];
+ OS << format("%8" PRIx64 ":", Address);
+ if (!NoShowRawInsn) {
+ OS << "\t";
+ dumpBytes(Bytes.slice(0, 4), OS);
+ OS << format("%08" PRIx32, opcode);
+ }
}
+ void printInst(MCInstPrinter &IP, const MCInst *MI,
+ ArrayRef<uint8_t> Bytes, uint64_t Address,
+ raw_ostream &OS, StringRef Annot,
+ MCSubtargetInfo const &STI) override {
+ std::string Buffer;
+ {
+ raw_string_ostream TempStream(Buffer);
+ IP.printInst(MI, TempStream, "", STI);
+ }
+ StringRef Contents(Buffer);
+ // Split off bundle attributes
+ auto PacketBundle = Contents.rsplit('\n');
+ // Split off first instruction from the rest
+ auto HeadTail = PacketBundle.first.split('\n');
+ auto Preamble = " { ";
+ auto Separator = "";
+ while(!HeadTail.first.empty()) {
+ OS << Separator;
+ Separator = "\n";
+ printLead(Bytes, Address, OS);
+ OS << Preamble;
+ Preamble = " ";
+ StringRef Inst;
+ auto Duplex = HeadTail.first.split('\v');
+ if(!Duplex.second.empty()){
+ OS << Duplex.first;
+ OS << "; ";
+ Inst = Duplex.second;
+ }
+ else
+ Inst = HeadTail.first;
+ OS << Inst;
+ Bytes = Bytes.slice(4);
+ Address += 4;
+ HeadTail = HeadTail.second.split('\n');
+ }
+ OS << " } " << PacketBundle.second;
+ }
+};
+HexagonPrettyPrinter HexagonPrettyPrinterInst;
+PrettyPrinter &selectPrettyPrinter(Triple const &Triple) {
+ switch(Triple.getArch()) {
+ default:
+ return PrettyPrinterInst;
+ case Triple::hexagon:
+ return HexagonPrettyPrinterInst;
+ }
+}
+}
- outs() << output.c_str();
+template <class ELFT>
+static std::error_code getRelocationValueString(const ELFObjectFile<ELFT> *Obj,
+ const RelocationRef &RelRef,
+ SmallVectorImpl<char> &Result) {
+ DataRefImpl Rel = RelRef.getRawDataRefImpl();
+
+ typedef typename ELFObjectFile<ELFT>::Elf_Sym Elf_Sym;
+ typedef typename ELFObjectFile<ELFT>::Elf_Shdr Elf_Shdr;
+ typedef typename ELFObjectFile<ELFT>::Elf_Rela Elf_Rela;
+
+ const ELFFile<ELFT> &EF = *Obj->getELFFile();
+
+ ErrorOr<const Elf_Shdr *> SecOrErr = EF.getSection(Rel.d.a);
+ if (std::error_code EC = SecOrErr.getError())
+ return EC;
+ const Elf_Shdr *Sec = *SecOrErr;
+ ErrorOr<const Elf_Shdr *> SymTabOrErr = EF.getSection(Sec->sh_link);
+ if (std::error_code EC = SymTabOrErr.getError())
+ return EC;
+ const Elf_Shdr *SymTab = *SymTabOrErr;
+ assert(SymTab->sh_type == ELF::SHT_SYMTAB ||
+ SymTab->sh_type == ELF::SHT_DYNSYM);
+ ErrorOr<const Elf_Shdr *> StrTabSec = EF.getSection(SymTab->sh_link);
+ if (std::error_code EC = StrTabSec.getError())
+ return EC;
+ ErrorOr<StringRef> StrTabOrErr = EF.getStringTable(*StrTabSec);
+ if (std::error_code EC = StrTabOrErr.getError())
+ return EC;
+ StringRef StrTab = *StrTabOrErr;
+ uint8_t type = RelRef.getType();
+ StringRef res;
+ int64_t addend = 0;
+ switch (Sec->sh_type) {
+ default:
+ return object_error::parse_failed;
+ case ELF::SHT_REL: {
+ // TODO: Read implicit addend from section data.
+ break;
+ }
+ case ELF::SHT_RELA: {
+ const Elf_Rela *ERela = Obj->getRela(Rel);
+ addend = ERela->r_addend;
+ break;
+ }
+ }
+ symbol_iterator SI = RelRef.getSymbol();
+ const Elf_Sym *symb = Obj->getSymbol(SI->getRawDataRefImpl());
+ StringRef Target;
+ if (symb->getType() == ELF::STT_SECTION) {
+ ErrorOr<section_iterator> SymSI = SI->getSection();
+ if (std::error_code EC = SymSI.getError())
+ return EC;
+ const Elf_Shdr *SymSec = Obj->getSection((*SymSI)->getRawDataRefImpl());
+ ErrorOr<StringRef> SecName = EF.getSectionName(SymSec);
+ if (std::error_code EC = SecName.getError())
+ return EC;
+ Target = *SecName;
+ } else {
+ ErrorOr<StringRef> SymName = symb->getName(StrTab);
+ if (!SymName)
+ return SymName.getError();
+ Target = *SymName;
+ }
+ switch (EF.getHeader()->e_machine) {
+ case ELF::EM_X86_64:
+ switch (type) {
+ case ELF::R_X86_64_PC8:
+ case ELF::R_X86_64_PC16:
+ case ELF::R_X86_64_PC32: {
+ std::string fmtbuf;
+ raw_string_ostream fmt(fmtbuf);
+ fmt << Target << (addend < 0 ? "" : "+") << addend << "-P";
+ fmt.flush();
+ Result.append(fmtbuf.begin(), fmtbuf.end());
+ } break;
+ case ELF::R_X86_64_8:
+ case ELF::R_X86_64_16:
+ case ELF::R_X86_64_32:
+ case ELF::R_X86_64_32S:
+ case ELF::R_X86_64_64: {
+ std::string fmtbuf;
+ raw_string_ostream fmt(fmtbuf);
+ fmt << Target << (addend < 0 ? "" : "+") << addend;
+ fmt.flush();
+ Result.append(fmtbuf.begin(), fmtbuf.end());
+ } break;
+ default:
+ res = "Unknown";
+ }
+ break;
+ case ELF::EM_AARCH64: {
+ std::string fmtbuf;
+ raw_string_ostream fmt(fmtbuf);
+ fmt << Target;
+ if (addend != 0)
+ fmt << (addend < 0 ? "" : "+") << addend;
+ fmt.flush();
+ Result.append(fmtbuf.begin(), fmtbuf.end());
+ break;
+ }
+ case ELF::EM_386:
+ case ELF::EM_IAMCU:
+ case ELF::EM_ARM:
+ case ELF::EM_HEXAGON:
+ case ELF::EM_MIPS:
+ res = Target;
+ break;
+ case ELF::EM_WEBASSEMBLY:
+ switch (type) {
+ case ELF::R_WEBASSEMBLY_DATA: {
+ std::string fmtbuf;
+ raw_string_ostream fmt(fmtbuf);
+ fmt << Target << (addend < 0 ? "" : "+") << addend;
+ fmt.flush();
+ Result.append(fmtbuf.begin(), fmtbuf.end());
+ break;
+ }
+ case ELF::R_WEBASSEMBLY_FUNCTION:
+ res = Target;
+ break;
+ default:
+ res = "Unknown";
+ }
+ break;
+ default:
+ res = "Unknown";
+ }
+ if (Result.empty())
+ Result.append(res.begin(), res.end());
+ return std::error_code();
}
-bool llvm::RelocAddressLess(RelocationRef a, RelocationRef b) {
- uint64_t a_addr, b_addr;
- if (error(a.getOffset(a_addr))) return false;
- if (error(b.getOffset(b_addr))) return false;
- return a_addr < b_addr;
+static std::error_code getRelocationValueString(const ELFObjectFileBase *Obj,
+ const RelocationRef &Rel,
+ SmallVectorImpl<char> &Result) {
+ if (auto *ELF32LE = dyn_cast<ELF32LEObjectFile>(Obj))
+ return getRelocationValueString(ELF32LE, Rel, Result);
+ if (auto *ELF64LE = dyn_cast<ELF64LEObjectFile>(Obj))
+ return getRelocationValueString(ELF64LE, Rel, Result);
+ if (auto *ELF32BE = dyn_cast<ELF32BEObjectFile>(Obj))
+ return getRelocationValueString(ELF32BE, Rel, Result);
+ auto *ELF64BE = cast<ELF64BEObjectFile>(Obj);
+ return getRelocationValueString(ELF64BE, Rel, Result);
+}
+
+static std::error_code getRelocationValueString(const COFFObjectFile *Obj,
+ const RelocationRef &Rel,
+ SmallVectorImpl<char> &Result) {
+ symbol_iterator SymI = Rel.getSymbol();
+ ErrorOr<StringRef> SymNameOrErr = SymI->getName();
+ if (std::error_code EC = SymNameOrErr.getError())
+ return EC;
+ StringRef SymName = *SymNameOrErr;
+ Result.append(SymName.begin(), SymName.end());
+ return std::error_code();
+}
+
+static void printRelocationTargetName(const MachOObjectFile *O,
+ const MachO::any_relocation_info &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);
+
+ for (const SymbolRef &Symbol : O->symbols()) {
+ std::error_code ec;
+ ErrorOr<uint64_t> Addr = Symbol.getAddress();
+ if ((ec = Addr.getError()))
+ report_fatal_error(ec.message());
+ if (*Addr != Val)
+ continue;
+ ErrorOr<StringRef> Name = Symbol.getName();
+ if (std::error_code EC = Name.getError())
+ 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 (const SectionRef &Section : ToolSectionFilter(*O)) {
+ std::error_code ec;
+
+ StringRef Name;
+ uint64_t Addr = Section.getAddress();
+ if (Addr != Val)
+ continue;
+ if ((ec = Section.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->getPlainRelocationSymbolNum(RE);
+
+ if (isExtern) {
+ symbol_iterator SI = O->symbol_begin();
+ advance(SI, Val);
+ ErrorOr<StringRef> SOrErr = SI->getName();
+ error(SOrErr.getError());
+ S = *SOrErr;
+ } else {
+ section_iterator SI = O->section_begin();
+ // Adjust for the fact that sections are 1-indexed.
+ advance(SI, Val - 1);
+ SI->getName(S);
+ }
+
+ fmt << S;
+}
+
+static std::error_code getRelocationValueString(const MachOObjectFile *Obj,
+ const RelocationRef &RelRef,
+ SmallVectorImpl<char> &Result) {
+ DataRefImpl Rel = RelRef.getRawDataRefImpl();
+ MachO::any_relocation_info RE = Obj->getRelocation(Rel);
+
+ unsigned Arch = Obj->getArch();
+
+ std::string fmtbuf;
+ raw_string_ostream fmt(fmtbuf);
+ unsigned Type = Obj->getAnyRelocationType(RE);
+ bool IsPCRel = Obj->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 = Obj->getAnyRelocationPCRel(RE);
+
+ switch (Type) {
+ case MachO::X86_64_RELOC_GOT_LOAD:
+ case MachO::X86_64_RELOC_GOT: {
+ printRelocationTargetName(Obj, RE, fmt);
+ fmt << "@GOT";
+ if (isPCRel)
+ fmt << "PCREL";
+ break;
+ }
+ case MachO::X86_64_RELOC_SUBTRACTOR: {
+ DataRefImpl RelNext = Rel;
+ Obj->moveRelocationNext(RelNext);
+ MachO::any_relocation_info RENext = Obj->getRelocation(RelNext);
+
+ // X86_64_RELOC_SUBTRACTOR must be followed by a relocation of type
+ // X86_64_RELOC_UNSIGNED.
+ // NOTE: Scattered relocations don't exist on x86_64.
+ unsigned RType = Obj->getAnyRelocationType(RENext);
+ if (RType != MachO::X86_64_RELOC_UNSIGNED)
+ report_fatal_error("Expected X86_64_RELOC_UNSIGNED after "
+ "X86_64_RELOC_SUBTRACTOR.");
+
+ // The X86_64_RELOC_UNSIGNED contains the minuend symbol;
+ // X86_64_RELOC_SUBTRACTOR contains the subtrahend.
+ printRelocationTargetName(Obj, RENext, fmt);
+ fmt << "-";
+ printRelocationTargetName(Obj, RE, fmt);
+ break;
+ }
+ case MachO::X86_64_RELOC_TLV:
+ printRelocationTargetName(Obj, RE, fmt);
+ fmt << "@TLV";
+ if (isPCRel)
+ fmt << "P";
+ break;
+ case MachO::X86_64_RELOC_SIGNED_1:
+ printRelocationTargetName(Obj, RE, fmt);
+ fmt << "-1";
+ break;
+ case MachO::X86_64_RELOC_SIGNED_2:
+ printRelocationTargetName(Obj, RE, fmt);
+ fmt << "-2";
+ break;
+ case MachO::X86_64_RELOC_SIGNED_4:
+ printRelocationTargetName(Obj, RE, fmt);
+ fmt << "-4";
+ break;
+ default:
+ printRelocationTargetName(Obj, RE, fmt);
+ break;
+ }
+ // X86 and ARM share some relocation types in common.
+ } else if (Arch == Triple::x86 || Arch == Triple::arm ||
+ Arch == Triple::ppc) {
+ // Generic relocation types...
+ switch (Type) {
+ case MachO::GENERIC_RELOC_PAIR: // prints no info
+ return std::error_code();
+ case MachO::GENERIC_RELOC_SECTDIFF: {
+ DataRefImpl RelNext = Rel;
+ Obj->moveRelocationNext(RelNext);
+ MachO::any_relocation_info RENext = Obj->getRelocation(RelNext);
+
+ // X86 sect diff's must be followed by a relocation of type
+ // GENERIC_RELOC_PAIR.
+ unsigned RType = Obj->getAnyRelocationType(RENext);
+
+ if (RType != MachO::GENERIC_RELOC_PAIR)
+ report_fatal_error("Expected GENERIC_RELOC_PAIR after "
+ "GENERIC_RELOC_SECTDIFF.");
+
+ printRelocationTargetName(Obj, RE, fmt);
+ fmt << "-";
+ printRelocationTargetName(Obj, RENext, fmt);
+ break;
+ }
+ }
+
+ if (Arch == Triple::x86 || Arch == Triple::ppc) {
+ switch (Type) {
+ case MachO::GENERIC_RELOC_LOCAL_SECTDIFF: {
+ DataRefImpl RelNext = Rel;
+ Obj->moveRelocationNext(RelNext);
+ MachO::any_relocation_info RENext = Obj->getRelocation(RelNext);
+
+ // X86 sect diff's must be followed by a relocation of type
+ // GENERIC_RELOC_PAIR.
+ unsigned RType = Obj->getAnyRelocationType(RENext);
+ if (RType != MachO::GENERIC_RELOC_PAIR)
+ report_fatal_error("Expected GENERIC_RELOC_PAIR after "
+ "GENERIC_RELOC_LOCAL_SECTDIFF.");
+
+ printRelocationTargetName(Obj, RE, fmt);
+ fmt << "-";
+ printRelocationTargetName(Obj, RENext, fmt);
+ break;
+ }
+ case MachO::GENERIC_RELOC_TLV: {
+ printRelocationTargetName(Obj, RE, fmt);
+ fmt << "@TLV";
+ if (IsPCRel)
+ fmt << "P";
+ break;
+ }
+ default:
+ printRelocationTargetName(Obj, RE, fmt);
+ }
+ } else { // ARM-specific relocations
+ switch (Type) {
+ case MachO::ARM_RELOC_HALF:
+ case MachO::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 = Obj->getAnyRelocationLength(RE) >> 1;
+
+ if (isUpper)
+ fmt << ":upper16:(";
+ else
+ fmt << ":lower16:(";
+ printRelocationTargetName(Obj, RE, fmt);
+
+ DataRefImpl RelNext = Rel;
+ Obj->moveRelocationNext(RelNext);
+ MachO::any_relocation_info RENext = Obj->getRelocation(RelNext);
+
+ // ARM half relocs must be followed by a relocation of type
+ // ARM_RELOC_PAIR.
+ unsigned RType = Obj->getAnyRelocationType(RENext);
+ if (RType != MachO::ARM_RELOC_PAIR)
+ report_fatal_error("Expected ARM_RELOC_PAIR after "
+ "ARM_RELOC_HALF");
+
+ // NOTE: The half of the target virtual address is stashed in the
+ // address field of the secondary relocation, but we can't reverse
+ // engineer the constant offset from it without decoding the movw/movt
+ // instruction to find the other half in its immediate field.
+
+ // ARM_RELOC_HALF_SECTDIFF encodes the second section in the
+ // symbol/section pointer of the follow-on relocation.
+ if (Type == MachO::ARM_RELOC_HALF_SECTDIFF) {
+ fmt << "-";
+ printRelocationTargetName(Obj, RENext, fmt);
+ }
+
+ fmt << ")";
+ break;
+ }
+ default: { printRelocationTargetName(Obj, RE, fmt); }
+ }
+ }
+ } else
+ printRelocationTargetName(Obj, RE, fmt);
+
+ fmt.flush();
+ Result.append(fmtbuf.begin(), fmtbuf.end());
+ return std::error_code();
+}
+
+static std::error_code getRelocationValueString(const RelocationRef &Rel,
+ SmallVectorImpl<char> &Result) {
+ const ObjectFile *Obj = Rel.getObject();
+ if (auto *ELF = dyn_cast<ELFObjectFileBase>(Obj))
+ return getRelocationValueString(ELF, Rel, Result);
+ if (auto *COFF = dyn_cast<COFFObjectFile>(Obj))
+ return getRelocationValueString(COFF, Rel, Result);
+ auto *MachO = cast<MachOObjectFile>(Obj);
+ return getRelocationValueString(MachO, Rel, Result);
+}
+
+/// @brief Indicates whether this relocation should hidden when listing
+/// relocations, usually because it is the trailing part of a multipart
+/// relocation that will be printed as part of the leading relocation.
+static bool getHidden(RelocationRef RelRef) {
+ const ObjectFile *Obj = RelRef.getObject();
+ auto *MachO = dyn_cast<MachOObjectFile>(Obj);
+ if (!MachO)
+ return false;
+
+ unsigned Arch = MachO->getArch();
+ DataRefImpl Rel = RelRef.getRawDataRefImpl();
+ uint64_t Type = MachO->getRelocationType(Rel);
+
+ // On arches that use the generic relocations, GENERIC_RELOC_PAIR
+ // is always hidden.
+ if (Arch == Triple::x86 || Arch == Triple::arm || Arch == Triple::ppc) {
+ if (Type == MachO::GENERIC_RELOC_PAIR)
+ return true;
+ } else if (Arch == Triple::x86_64) {
+ // On x86_64, X86_64_RELOC_UNSIGNED is hidden only when it follows
+ // an X86_64_RELOC_SUBTRACTOR.
+ if (Type == MachO::X86_64_RELOC_UNSIGNED && Rel.d.a > 0) {
+ DataRefImpl RelPrev = Rel;
+ RelPrev.d.a--;
+ uint64_t PrevType = MachO->getRelocationType(RelPrev);
+ if (PrevType == MachO::X86_64_RELOC_SUBTRACTOR)
+ return true;
+ }
+ }
+
+ return false;
}
static void DisassembleObject(const ObjectFile *Obj, bool InlineRelocs) {
const Target *TheTarget = getTarget(Obj);
- // getTarget() will have already issued a diagnostic if necessary, so
- // just bail here if it failed.
- if (!TheTarget)
- return;
// Package up features to be passed to target/subtarget
std::string FeaturesStr;
std::unique_ptr<const MCRegisterInfo> MRI(
TheTarget->createMCRegInfo(TripleName));
- if (!MRI) {
- errs() << "error: no register info for target " << TripleName << "\n";
- return;
- }
+ if (!MRI)
+ report_fatal_error("error: no register info for target " + TripleName);
// Set up disassembler.
std::unique_ptr<const MCAsmInfo> AsmInfo(
TheTarget->createMCAsmInfo(*MRI, TripleName));
- if (!AsmInfo) {
- errs() << "error: no assembly info for target " << TripleName << "\n";
- return;
- }
-
+ if (!AsmInfo)
+ report_fatal_error("error: no assembly info for target " + TripleName);
std::unique_ptr<const MCSubtargetInfo> STI(
TheTarget->createMCSubtargetInfo(TripleName, MCPU, FeaturesStr));
- if (!STI) {
- errs() << "error: no subtarget info for target " << TripleName << "\n";
- return;
- }
-
+ if (!STI)
+ report_fatal_error("error: no subtarget info for target " + TripleName);
std::unique_ptr<const MCInstrInfo> MII(TheTarget->createMCInstrInfo());
- if (!MII) {
- errs() << "error: no instruction info for target " << TripleName << "\n";
- return;
- }
-
+ if (!MII)
+ report_fatal_error("error: no instruction info for target " + TripleName);
std::unique_ptr<const MCObjectFileInfo> MOFI(new MCObjectFileInfo);
MCContext Ctx(AsmInfo.get(), MRI.get(), MOFI.get());
std::unique_ptr<MCDisassembler> DisAsm(
TheTarget->createMCDisassembler(*STI, Ctx));
-
- if (!DisAsm) {
- errs() << "error: no disassembler for target " << TripleName << "\n";
- return;
- }
+ if (!DisAsm)
+ report_fatal_error("error: no disassembler for target " + TripleName);
std::unique_ptr<const MCInstrAnalysis> MIA(
TheTarget->createMCInstrAnalysis(MII.get()));
int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
std::unique_ptr<MCInstPrinter> IP(TheTarget->createMCInstPrinter(
Triple(TripleName), AsmPrinterVariant, *AsmInfo, *MII, *MRI));
- if (!IP) {
- errs() << "error: no instruction printer for target " << TripleName
- << '\n';
- return;
- }
+ if (!IP)
+ report_fatal_error("error: no instruction printer for target " +
+ TripleName);
+ IP->setPrintImmHex(PrintImmHex);
+ PrettyPrinter &PIP = selectPrettyPrinter(Triple(TripleName));
StringRef Fmt = Obj->getBytesInAddress() > 4 ? "\t\t%016" PRIx64 ": " :
"\t\t\t%08" PRIx64 ": ";
// in RelocSecs contain the relocations for section S.
std::error_code EC;
std::map<SectionRef, SmallVector<SectionRef, 1>> SectionRelocMap;
- for (const SectionRef &Section : Obj->sections()) {
+ for (const SectionRef &Section : ToolSectionFilter(*Obj)) {
section_iterator Sec2 = Section.getRelocatedSection();
if (Sec2 != Obj->section_end())
SectionRelocMap[*Sec2].push_back(Section);
}
- for (const SectionRef &Section : Obj->sections()) {
- if (!Section.isText() || Section.isVirtual())
+ // Create a mapping from virtual address to symbol name. This is used to
+ // pretty print the symbols while disassembling.
+ typedef std::vector<std::pair<uint64_t, StringRef>> SectionSymbolsTy;
+ std::map<SectionRef, SectionSymbolsTy> AllSymbols;
+ for (const SymbolRef &Symbol : Obj->symbols()) {
+ ErrorOr<uint64_t> AddressOrErr = Symbol.getAddress();
+ error(AddressOrErr.getError());
+ uint64_t Address = *AddressOrErr;
+
+ ErrorOr<StringRef> Name = Symbol.getName();
+ error(Name.getError());
+ if (Name->empty())
+ continue;
+
+ ErrorOr<section_iterator> SectionOrErr = Symbol.getSection();
+ error(SectionOrErr.getError());
+ section_iterator SecI = *SectionOrErr;
+ if (SecI == Obj->section_end())
+ continue;
+
+ AllSymbols[*SecI].emplace_back(Address, *Name);
+ }
+
+ // Create a mapping from virtual address to section.
+ std::vector<std::pair<uint64_t, SectionRef>> SectionAddresses;
+ for (SectionRef Sec : Obj->sections())
+ SectionAddresses.emplace_back(Sec.getAddress(), Sec);
+ array_pod_sort(SectionAddresses.begin(), SectionAddresses.end());
+
+ // Linked executables (.exe and .dll files) typically don't include a real
+ // symbol table but they might contain an export table.
+ if (const auto *COFFObj = dyn_cast<COFFObjectFile>(Obj)) {
+ for (const auto &ExportEntry : COFFObj->export_directories()) {
+ StringRef Name;
+ error(ExportEntry.getSymbolName(Name));
+ if (Name.empty())
+ continue;
+ uint32_t RVA;
+ error(ExportEntry.getExportRVA(RVA));
+
+ uint64_t VA = COFFObj->getImageBase() + RVA;
+ auto Sec = std::upper_bound(
+ SectionAddresses.begin(), SectionAddresses.end(), VA,
+ [](uint64_t LHS, const std::pair<uint64_t, SectionRef> &RHS) {
+ return LHS < RHS.first;
+ });
+ if (Sec != SectionAddresses.begin())
+ --Sec;
+ else
+ Sec = SectionAddresses.end();
+
+ if (Sec != SectionAddresses.end())
+ AllSymbols[Sec->second].emplace_back(VA, Name);
+ }
+ }
+
+ // Sort all the symbols, this allows us to use a simple binary search to find
+ // a symbol near an address.
+ for (std::pair<const SectionRef, SectionSymbolsTy> &SecSyms : AllSymbols)
+ array_pod_sort(SecSyms.second.begin(), SecSyms.second.end());
+
+ for (const SectionRef &Section : ToolSectionFilter(*Obj)) {
+ if (!DisassembleAll && (!Section.isText() || Section.isVirtual()))
continue;
uint64_t SectionAddr = Section.getAddress();
if (!SectSize)
continue;
- // Make a list of all the symbols in this section.
- std::vector<std::pair<uint64_t, StringRef>> Symbols;
- for (const SymbolRef &Symbol : Obj->symbols()) {
- if (Section.containsSymbol(Symbol)) {
- uint64_t Address;
- if (error(Symbol.getAddress(Address)))
- break;
- if (Address == UnknownAddressOrSize)
- continue;
- Address -= SectionAddr;
- if (Address >= SectSize)
- continue;
-
- StringRef Name;
- if (error(Symbol.getName(Name)))
- break;
- Symbols.push_back(std::make_pair(Address, Name));
+ // Get the list of all the symbols in this section.
+ SectionSymbolsTy &Symbols = AllSymbols[Section];
+ std::vector<uint64_t> DataMappingSymsAddr;
+ std::vector<uint64_t> TextMappingSymsAddr;
+ if (Obj->isELF() && Obj->getArch() == Triple::aarch64) {
+ for (const auto &Symb : Symbols) {
+ uint64_t Address = Symb.first;
+ StringRef Name = Symb.second;
+ if (Name.startswith("$d"))
+ DataMappingSymsAddr.push_back(Address - SectionAddr);
+ if (Name.startswith("$x"))
+ TextMappingSymsAddr.push_back(Address - SectionAddr);
}
}
- // Sort the symbols by address, just in case they didn't come in that way.
- array_pod_sort(Symbols.begin(), Symbols.end());
+ std::sort(DataMappingSymsAddr.begin(), DataMappingSymsAddr.end());
+ std::sort(TextMappingSymsAddr.begin(), TextMappingSymsAddr.end());
// Make a list of all the relocations for this section.
std::vector<RelocationRef> Rels;
SegmentName = MachO->getSectionFinalSegmentName(DR);
}
StringRef name;
- if (error(Section.getName(name)))
- break;
+ error(Section.getName(name));
outs() << "Disassembly of section ";
if (!SegmentName.empty())
outs() << SegmentName << ",";
outs() << name << ':';
- // If the section has no symbols just insert a dummy one and disassemble
- // the whole section.
- if (Symbols.empty())
- Symbols.push_back(std::make_pair(0, name));
-
+ // If the section has no symbol at the start, just insert a dummy one.
+ if (Symbols.empty() || Symbols[0].first != 0)
+ Symbols.insert(Symbols.begin(), std::make_pair(SectionAddr, name));
SmallString<40> Comments;
raw_svector_ostream CommentStream(Comments);
StringRef BytesStr;
- if (error(Section.getContents(BytesStr)))
- break;
+ error(Section.getContents(BytesStr));
ArrayRef<uint8_t> Bytes(reinterpret_cast<const uint8_t *>(BytesStr.data()),
BytesStr.size());
// Disassemble symbol by symbol.
for (unsigned si = 0, se = Symbols.size(); si != se; ++si) {
- uint64_t Start = Symbols[si].first;
- // The end is either the section end or the beginning of the next symbol.
- uint64_t End = (si == se - 1) ? SectSize : Symbols[si + 1].first;
+ uint64_t Start = Symbols[si].first - SectionAddr;
+ // The end is either the section end or the beginning of the next
+ // symbol.
+ uint64_t End =
+ (si == se - 1) ? SectSize : Symbols[si + 1].first - SectionAddr;
+ // Don't try to disassemble beyond the end of section contents.
+ if (End > SectSize)
+ End = SectSize;
// If this symbol has the same address as the next symbol, then skip it.
- if (Start == End)
+ if (Start >= End)
continue;
outs() << '\n' << Symbols[si].second << ":\n";
for (Index = Start; Index < End; Index += Size) {
MCInst Inst;
+ // AArch64 ELF binaries can interleave data and text in the
+ // same section. We rely on the markers introduced to
+ // understand what we need to dump.
+ if (Obj->isELF() && Obj->getArch() == Triple::aarch64) {
+ uint64_t Stride = 0;
+
+ auto DAI = std::lower_bound(DataMappingSymsAddr.begin(),
+ DataMappingSymsAddr.end(), Index);
+ if (DAI != DataMappingSymsAddr.end() && *DAI == Index) {
+ // Switch to data.
+ while (Index < End) {
+ outs() << format("%8" PRIx64 ":", SectionAddr + Index);
+ outs() << "\t";
+ if (Index + 4 <= End) {
+ Stride = 4;
+ dumpBytes(Bytes.slice(Index, 4), outs());
+ outs() << "\t.word";
+ } else if (Index + 2 <= End) {
+ Stride = 2;
+ dumpBytes(Bytes.slice(Index, 2), outs());
+ outs() << "\t.short";
+ } else {
+ Stride = 1;
+ dumpBytes(Bytes.slice(Index, 1), outs());
+ outs() << "\t.byte";
+ }
+ Index += Stride;
+ outs() << "\n";
+ auto TAI = std::lower_bound(TextMappingSymsAddr.begin(),
+ TextMappingSymsAddr.end(), Index);
+ if (TAI != TextMappingSymsAddr.end() && *TAI == Index)
+ break;
+ }
+ }
+ }
+
+ if (Index >= End)
+ break;
+
if (DisAsm->getInstruction(Inst, Size, Bytes.slice(Index),
SectionAddr + Index, DebugOut,
CommentStream)) {
- outs() << format("%8" PRIx64 ":", SectionAddr + Index);
- if (!NoShowRawInsn) {
- outs() << "\t";
- DumpBytes(ArrayRef<uint8_t>(Bytes.data() + Index, Size));
- }
- IP->printInst(&Inst, outs(), "", *STI);
+ PIP.printInst(*IP, &Inst,
+ Bytes.slice(Index, Size),
+ SectionAddr + Index, outs(), "", *STI);
outs() << CommentStream.str();
Comments.clear();
+
+ // Try to resolve the target of a call, tail call, etc. to a specific
+ // symbol.
+ if (MIA && (MIA->isCall(Inst) || MIA->isUnconditionalBranch(Inst) ||
+ MIA->isConditionalBranch(Inst))) {
+ uint64_t Target;
+ if (MIA->evaluateBranch(Inst, SectionAddr + Index, Size, Target)) {
+ // In a relocatable object, the target's section must reside in
+ // the same section as the call instruction or it is accessed
+ // through a relocation.
+ //
+ // In a non-relocatable object, the target may be in any section.
+ //
+ // N.B. We don't walk the relocations in the relocatable case yet.
+ auto *TargetSectionSymbols = &Symbols;
+ if (!Obj->isRelocatableObject()) {
+ auto SectionAddress = std::upper_bound(
+ SectionAddresses.begin(), SectionAddresses.end(), Target,
+ [](uint64_t LHS,
+ const std::pair<uint64_t, SectionRef> &RHS) {
+ return LHS < RHS.first;
+ });
+ if (SectionAddress != SectionAddresses.begin()) {
+ --SectionAddress;
+ TargetSectionSymbols = &AllSymbols[SectionAddress->second];
+ } else {
+ TargetSectionSymbols = nullptr;
+ }
+ }
+
+ // Find the first symbol in the section whose offset is less than
+ // or equal to the target.
+ if (TargetSectionSymbols) {
+ auto TargetSym = std::upper_bound(
+ TargetSectionSymbols->begin(), TargetSectionSymbols->end(),
+ Target, [](uint64_t LHS,
+ const std::pair<uint64_t, StringRef> &RHS) {
+ return LHS < RHS.first;
+ });
+ if (TargetSym != TargetSectionSymbols->begin()) {
+ --TargetSym;
+ uint64_t TargetAddress = std::get<0>(*TargetSym);
+ StringRef TargetName = std::get<1>(*TargetSym);
+ outs() << " <" << TargetName;
+ uint64_t Disp = Target - TargetAddress;
+ if (Disp)
+ outs() << '+' << utohexstr(Disp);
+ outs() << '>';
+ }
+ }
+ }
+ }
outs() << "\n";
} else {
errs() << ToolName << ": warning: invalid instruction encoding\n";
// Print relocation for instruction.
while (rel_cur != rel_end) {
- bool hidden = false;
- uint64_t addr;
+ bool hidden = getHidden(*rel_cur);
+ uint64_t addr = rel_cur->getOffset();
SmallString<16> name;
SmallString<32> val;
// If this relocation is hidden, skip it.
- if (error(rel_cur->getHidden(hidden))) goto skip_print_rel;
if (hidden) goto skip_print_rel;
- if (error(rel_cur->getOffset(addr))) goto skip_print_rel;
// Stop when rel_cur's address is past the current instruction.
if (addr >= Index + Size) break;
- if (error(rel_cur->getTypeName(name))) goto skip_print_rel;
- if (error(rel_cur->getValueString(val))) goto skip_print_rel;
-
+ rel_cur->getTypeName(name);
+ error(getRelocationValueString(*rel_cur, val));
outs() << format(Fmt.data(), SectionAddr + addr) << name
<< "\t" << val << "\n";
if (!Obj->isRelocatableObject())
return;
- for (const SectionRef &Section : Obj->sections()) {
+ for (const SectionRef &Section : ToolSectionFilter(*Obj)) {
if (Section.relocation_begin() == Section.relocation_end())
continue;
StringRef secname;
- if (error(Section.getName(secname)))
- continue;
+ error(Section.getName(secname));
outs() << "RELOCATION RECORDS FOR [" << secname << "]:\n";
for (const RelocationRef &Reloc : Section.relocations()) {
- bool hidden;
- uint64_t address;
+ bool hidden = getHidden(Reloc);
+ uint64_t address = Reloc.getOffset();
SmallString<32> relocname;
SmallString<32> valuestr;
- if (error(Reloc.getHidden(hidden)))
- continue;
if (hidden)
continue;
- if (error(Reloc.getTypeName(relocname)))
- continue;
- if (error(Reloc.getOffset(address)))
- continue;
- if (error(Reloc.getValueString(valuestr)))
- continue;
+ Reloc.getTypeName(relocname);
+ error(getRelocationValueString(Reloc, valuestr));
outs() << format(Fmt.data(), address) << " " << relocname << " "
<< valuestr << "\n";
}
outs() << "Sections:\n"
"Idx Name Size Address Type\n";
unsigned i = 0;
- for (const SectionRef &Section : Obj->sections()) {
+ for (const SectionRef &Section : ToolSectionFilter(*Obj)) {
StringRef Name;
- if (error(Section.getName(Name)))
- return;
+ error(Section.getName(Name));
uint64_t Address = Section.getAddress();
uint64_t Size = Section.getSize();
bool Text = Section.isText();
void llvm::PrintSectionContents(const ObjectFile *Obj) {
std::error_code EC;
- for (const SectionRef &Section : Obj->sections()) {
+ for (const SectionRef &Section : ToolSectionFilter(*Obj)) {
StringRef Name;
StringRef Contents;
- if (error(Section.getName(Name)))
- continue;
+ error(Section.getName(Name));
uint64_t BaseAddr = Section.getAddress();
uint64_t Size = Section.getSize();
if (!Size)
continue;
}
- if (error(Section.getContents(Contents)))
- continue;
+ error(Section.getContents(Contents));
// Dump out the content as hex and printable ascii characters.
for (std::size_t addr = 0, end = Contents.size(); addr < end; addr += 16) {
}
}
-static void PrintCOFFSymbolTable(const COFFObjectFile *coff) {
- for (unsigned SI = 0, SE = coff->getNumberOfSymbols(); SI != SE; ++SI) {
- ErrorOr<COFFSymbolRef> Symbol = coff->getSymbol(SI);
- StringRef Name;
- if (error(Symbol.getError()))
- return;
-
- if (error(coff->getSymbolName(*Symbol, Name)))
- return;
-
- outs() << "[" << format("%2d", SI) << "]"
- << "(sec " << format("%2d", int(Symbol->getSectionNumber())) << ")"
- << "(fl 0x00)" // Flag bits, which COFF doesn't have.
- << "(ty " << format("%3x", unsigned(Symbol->getType())) << ")"
- << "(scl " << format("%3x", unsigned(Symbol->getStorageClass())) << ") "
- << "(nx " << unsigned(Symbol->getNumberOfAuxSymbols()) << ") "
- << "0x" << format("%08x", unsigned(Symbol->getValue())) << " "
- << Name << "\n";
-
- for (unsigned AI = 0, AE = Symbol->getNumberOfAuxSymbols(); AI < AE; ++AI, ++SI) {
- if (Symbol->isSectionDefinition()) {
- const coff_aux_section_definition *asd;
- if (error(coff->getAuxSymbol<coff_aux_section_definition>(SI + 1, asd)))
- return;
-
- int32_t AuxNumber = asd->getNumber(Symbol->isBigObj());
-
- outs() << "AUX "
- << format("scnlen 0x%x nreloc %d nlnno %d checksum 0x%x "
- , unsigned(asd->Length)
- , unsigned(asd->NumberOfRelocations)
- , unsigned(asd->NumberOfLinenumbers)
- , unsigned(asd->CheckSum))
- << format("assoc %d comdat %d\n"
- , unsigned(AuxNumber)
- , unsigned(asd->Selection));
- } else if (Symbol->isFileRecord()) {
- const char *FileName;
- if (error(coff->getAuxSymbol<char>(SI + 1, FileName)))
- return;
-
- StringRef Name(FileName, Symbol->getNumberOfAuxSymbols() *
- coff->getSymbolTableEntrySize());
- outs() << "AUX " << Name.rtrim(StringRef("\0", 1)) << '\n';
-
- SI = SI + Symbol->getNumberOfAuxSymbols();
- break;
- } else {
- outs() << "AUX Unknown\n";
- }
- }
- }
-}
-
void llvm::PrintSymbolTable(const ObjectFile *o) {
outs() << "SYMBOL TABLE:\n";
if (const COFFObjectFile *coff = dyn_cast<const COFFObjectFile>(o)) {
- PrintCOFFSymbolTable(coff);
+ printCOFFSymbolTable(coff);
return;
}
for (const SymbolRef &Symbol : o->symbols()) {
- StringRef Name;
- uint64_t Address;
- SymbolRef::Type Type;
- uint64_t Size;
+ ErrorOr<uint64_t> AddressOrError = Symbol.getAddress();
+ error(AddressOrError.getError());
+ uint64_t Address = *AddressOrError;
+ SymbolRef::Type Type = Symbol.getType();
uint32_t Flags = Symbol.getFlags();
- section_iterator Section = o->section_end();
- if (error(Symbol.getName(Name)))
- continue;
- if (error(Symbol.getAddress(Address)))
- continue;
- if (error(Symbol.getType(Type)))
- continue;
- if (error(Symbol.getSize(Size)))
- continue;
- if (error(Symbol.getSection(Section)))
- continue;
+ ErrorOr<section_iterator> SectionOrErr = Symbol.getSection();
+ error(SectionOrErr.getError());
+ section_iterator Section = *SectionOrErr;
+ StringRef Name;
+ if (Type == SymbolRef::ST_Debug && Section != o->section_end()) {
+ Section->getName(Name);
+ } else {
+ ErrorOr<StringRef> NameOrErr = Symbol.getName();
+ error(NameOrErr.getError());
+ Name = *NameOrErr;
+ }
bool Global = Flags & SymbolRef::SF_Global;
bool Weak = Flags & SymbolRef::SF_Weak;
bool Absolute = Flags & SymbolRef::SF_Absolute;
bool Common = Flags & SymbolRef::SF_Common;
+ bool Hidden = Flags & SymbolRef::SF_Hidden;
- if (Common) {
- uint32_t Alignment;
- if (error(Symbol.getAlignment(Alignment)))
- Alignment = 0;
- Address = Size;
- Size = Alignment;
- }
- if (Address == UnknownAddressOrSize)
- Address = 0;
- if (Size == UnknownAddressOrSize)
- Size = 0;
char GlobLoc = ' ';
if (Type != SymbolRef::ST_Unknown)
GlobLoc = Global ? 'g' : 'l';
outs() << SegmentName << ",";
}
StringRef SectionName;
- if (error(Section->getName(SectionName)))
- SectionName = "";
+ error(Section->getName(SectionName));
outs() << SectionName;
}
- outs() << '\t'
- << format("%08" PRIx64 " ", Size)
- << Name
+
+ outs() << '\t';
+ if (Common || isa<ELFObjectFileBase>(o)) {
+ uint64_t Val =
+ Common ? Symbol.getAlignment() : ELFSymbolRef(Symbol).getSize();
+ outs() << format("\t %08" PRIx64 " ", Val);
+ }
+
+ if (Hidden) {
+ outs() << ".hidden ";
+ }
+ outs() << Name
<< '\n';
}
}
}
}
-static void printPrivateFileHeader(const ObjectFile *o) {
- if (o->isELF()) {
+/// Dump the raw contents of the __clangast section so the output can be piped
+/// into llvm-bcanalyzer.
+void llvm::printRawClangAST(const ObjectFile *Obj) {
+ if (outs().is_displayed()) {
+ errs() << "The -raw-clang-ast option will dump the raw binary contents of "
+ "the clang ast section.\n"
+ "Please redirect the output to a file or another program such as "
+ "llvm-bcanalyzer.\n";
+ return;
+ }
+
+ StringRef ClangASTSectionName("__clangast");
+ if (isa<COFFObjectFile>(Obj)) {
+ ClangASTSectionName = "clangast";
+ }
+
+ Optional<object::SectionRef> ClangASTSection;
+ for (auto Sec : ToolSectionFilter(*Obj)) {
+ StringRef Name;
+ Sec.getName(Name);
+ if (Name == ClangASTSectionName) {
+ ClangASTSection = Sec;
+ break;
+ }
+ }
+ if (!ClangASTSection)
+ return;
+
+ StringRef ClangASTContents;
+ error(ClangASTSection.getValue().getContents(ClangASTContents));
+ outs().write(ClangASTContents.data(), ClangASTContents.size());
+}
+
+static void printFaultMaps(const ObjectFile *Obj) {
+ const char *FaultMapSectionName = nullptr;
+
+ if (isa<ELFObjectFileBase>(Obj)) {
+ FaultMapSectionName = ".llvm_faultmaps";
+ } else if (isa<MachOObjectFile>(Obj)) {
+ FaultMapSectionName = "__llvm_faultmaps";
+ } else {
+ errs() << "This operation is only currently supported "
+ "for ELF and Mach-O executable files.\n";
+ return;
+ }
+
+ Optional<object::SectionRef> FaultMapSection;
+
+ for (auto Sec : ToolSectionFilter(*Obj)) {
+ StringRef Name;
+ Sec.getName(Name);
+ if (Name == FaultMapSectionName) {
+ FaultMapSection = Sec;
+ break;
+ }
+ }
+
+ outs() << "FaultMap table:\n";
+
+ if (!FaultMapSection.hasValue()) {
+ outs() << "<not found>\n";
+ return;
+ }
+
+ StringRef FaultMapContents;
+ error(FaultMapSection.getValue().getContents(FaultMapContents));
+
+ FaultMapParser FMP(FaultMapContents.bytes_begin(),
+ FaultMapContents.bytes_end());
+
+ outs() << FMP;
+}
+
+static void printPrivateFileHeaders(const ObjectFile *o) {
+ if (o->isELF())
printELFFileHeader(o);
- } else if (o->isCOFF()) {
+ else if (o->isCOFF())
printCOFFFileHeader(o);
- } else if (o->isMachO()) {
+ else if (o->isMachO()) {
printMachOFileHeader(o);
- }
+ printMachOLoadCommands(o);
+ } else
+ report_fatal_error("Invalid/Unsupported object file format");
+}
+
+static void printFirstPrivateFileHeader(const ObjectFile *o) {
+ if (o->isELF())
+ printELFFileHeader(o);
+ else if (o->isCOFF())
+ printCOFFFileHeader(o);
+ else if (o->isMachO())
+ printMachOFileHeader(o);
+ else
+ report_fatal_error("Invalid/Unsupported object file format");
}
static void DumpObject(const ObjectFile *o) {
- outs() << '\n';
- outs() << o->getFileName()
- << ":\tfile format " << o->getFileFormatName() << "\n\n";
+ // Avoid other output when using a raw option.
+ if (!RawClangAST) {
+ outs() << '\n';
+ outs() << o->getFileName()
+ << ":\tfile format " << o->getFileFormatName() << "\n\n";
+ }
if (Disassemble)
DisassembleObject(o, Relocations);
if (UnwindInfo)
PrintUnwindInfo(o);
if (PrivateHeaders)
- printPrivateFileHeader(o);
+ printPrivateFileHeaders(o);
+ if (FirstPrivateHeader)
+ printFirstPrivateFileHeader(o);
if (ExportsTrie)
printExportsTrie(o);
if (Rebase)
printLazyBindTable(o);
if (WeakBind)
printWeakBindTable(o);
+ if (RawClangAST)
+ printRawClangAST(o);
+ if (PrintFaultMaps)
+ printFaultMaps(o);
}
/// @brief Dump each object file in \a a;
static void DumpArchive(const Archive *a) {
- for (Archive::child_iterator i = a->child_begin(), e = a->child_end(); i != e;
- ++i) {
- ErrorOr<std::unique_ptr<Binary>> ChildOrErr = i->getAsBinary();
- if (std::error_code EC = ChildOrErr.getError()) {
- // Ignore non-object files.
+ for (auto &ErrorOrChild : a->children()) {
+ if (std::error_code EC = ErrorOrChild.getError())
+ report_error(a->getFileName(), EC);
+ const Archive::Child &C = *ErrorOrChild;
+ ErrorOr<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary();
+ if (std::error_code EC = ChildOrErr.getError())
if (EC != object_error::invalid_file_type)
- errs() << ToolName << ": '" << a->getFileName() << "': " << EC.message()
- << ".\n";
- continue;
- }
+ report_error(a->getFileName(), EC);
if (ObjectFile *o = dyn_cast<ObjectFile>(&*ChildOrErr.get()))
DumpObject(o);
else
- errs() << ToolName << ": '" << a->getFileName() << "': "
- << "Unrecognized file type.\n";
+ report_error(a->getFileName(), object_error::invalid_file_type);
}
}
/// @brief Open file and figure out how to dump it.
static void DumpInput(StringRef file) {
- // If file isn't stdin, check that it exists.
- if (file != "-" && !sys::fs::exists(file)) {
- errs() << ToolName << ": '" << file << "': " << "No such file\n";
- return;
- }
// If we are using the Mach-O specific object file parser, then let it parse
// the file and process the command line options. So the -arch flags can
// Attempt to open the binary.
ErrorOr<OwningBinary<Binary>> BinaryOrErr = createBinary(file);
- if (std::error_code EC = BinaryOrErr.getError()) {
- errs() << ToolName << ": '" << file << "': " << EC.message() << ".\n";
- return;
- }
+ if (std::error_code EC = BinaryOrErr.getError())
+ report_error(file, EC);
Binary &Binary = *BinaryOrErr.get().getBinary();
if (Archive *a = dyn_cast<Archive>(&Binary))
else if (ObjectFile *o = dyn_cast<ObjectFile>(&Binary))
DumpObject(o);
else
- errs() << ToolName << ": '" << file << "': " << "Unrecognized file type.\n";
+ report_error(file, object_error::invalid_file_type);
}
int main(int argc, char **argv) {
// Initialize targets and assembly printers/parsers.
llvm::InitializeAllTargetInfos();
llvm::InitializeAllTargetMCs();
- llvm::InitializeAllAsmParsers();
llvm::InitializeAllDisassemblers();
// Register the target printer for --version.
if (InputFilenames.size() == 0)
InputFilenames.push_back("a.out");
+ if (DisassembleAll)
+ Disassemble = true;
if (!Disassemble
&& !Relocations
&& !SectionHeaders
&& !SymbolTable
&& !UnwindInfo
&& !PrivateHeaders
+ && !FirstPrivateHeader
&& !ExportsTrie
&& !Rebase
&& !Bind
&& !LazyBind
&& !WeakBind
+ && !RawClangAST
&& !(UniversalHeaders && MachOOpt)
&& !(ArchiveHeaders && MachOOpt)
&& !(IndirectSymbols && MachOOpt)
&& !(DylibsUsed && MachOOpt)
&& !(DylibId && MachOOpt)
&& !(ObjcMetaData && MachOOpt)
- && !(DumpSections.size() != 0 && MachOOpt)) {
+ && !(FilterSections.size() != 0 && MachOOpt)
+ && !PrintFaultMaps) {
cl::PrintHelpMessage();
return 2;
}
std::for_each(InputFilenames.begin(), InputFilenames.end(),
DumpInput);
- return ReturnValue;
+ return EXIT_SUCCESS;
}