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-rw-r--r--contrib/llvm/tools/llvm-objdump/llvm-objdump.cpp1549
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diff --git a/contrib/llvm/tools/llvm-objdump/llvm-objdump.cpp b/contrib/llvm/tools/llvm-objdump/llvm-objdump.cpp
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+++ b/contrib/llvm/tools/llvm-objdump/llvm-objdump.cpp
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+//===-- llvm-objdump.cpp - Object file dumping utility for llvm -----------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This program is a utility that works like binutils "objdump", that is, it
+// dumps out a plethora of information about an object file depending on the
+// flags.
+//
+// The flags and output of this program should be near identical to those of
+// binutils objdump.
+//
+//===----------------------------------------------------------------------===//
+
+#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/MCInst.h"
+#include "llvm/MC/MCInstPrinter.h"
+#include "llvm/MC/MCInstrAnalysis.h"
+#include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/MC/MCRegisterInfo.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"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/SourceMgr.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/TargetSelect.h"
+#include "llvm/Support/raw_ostream.h"
+#include <algorithm>
+#include <cctype>
+#include <cstring>
+#include <system_error>
+
+using namespace llvm;
+using namespace object;
+
+static cl::list<std::string>
+InputFilenames(cl::Positional, cl::desc("<input object files>"),cl::ZeroOrMore);
+
+cl::opt<bool>
+llvm::Disassemble("disassemble",
+ cl::desc("Display assembler mnemonics for the machine instructions"));
+static cl::alias
+Disassembled("d", cl::desc("Alias for --disassemble"),
+ cl::aliasopt(Disassemble));
+
+cl::opt<bool>
+llvm::Relocations("r", cl::desc("Display the relocation entries in the file"));
+
+cl::opt<bool>
+llvm::SectionContents("s", cl::desc("Display the content of each section"));
+
+cl::opt<bool>
+llvm::SymbolTable("t", cl::desc("Display the symbol table"));
+
+cl::opt<bool>
+llvm::ExportsTrie("exports-trie", cl::desc("Display mach-o exported symbols"));
+
+cl::opt<bool>
+llvm::Rebase("rebase", cl::desc("Display mach-o rebasing info"));
+
+cl::opt<bool>
+llvm::Bind("bind", cl::desc("Display mach-o binding info"));
+
+cl::opt<bool>
+llvm::LazyBind("lazy-bind", cl::desc("Display mach-o lazy binding info"));
+
+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
+MachOm("m", cl::desc("Alias for --macho"), cl::aliasopt(MachOOpt));
+
+cl::opt<std::string>
+llvm::TripleName("triple", cl::desc("Target triple to disassemble for, "
+ "see -version for available targets"));
+
+cl::opt<std::string>
+llvm::MCPU("mcpu",
+ cl::desc("Target a specific cpu type (-mcpu=help for details)"),
+ cl::value_desc("cpu-name"),
+ cl::init(""));
+
+cl::opt<std::string>
+llvm::ArchName("arch-name", cl::desc("Target arch to disassemble for, "
+ "see -version for available targets"));
+
+cl::opt<bool>
+llvm::SectionHeaders("section-headers", cl::desc("Display summaries of the "
+ "headers for each section."));
+static cl::alias
+SectionHeadersShort("headers", cl::desc("Alias for --section-headers"),
+ cl::aliasopt(SectionHeaders));
+static cl::alias
+SectionHeadersShorter("h", cl::desc("Alias for --section-headers"),
+ cl::aliasopt(SectionHeaders));
+
+cl::list<std::string>
+llvm::MAttrs("mattr",
+ cl::CommaSeparated,
+ cl::desc("Target specific attributes"),
+ cl::value_desc("a1,+a2,-a3,..."));
+
+cl::opt<bool>
+llvm::NoShowRawInsn("no-show-raw-insn", cl::desc("When disassembling "
+ "instructions, do not print "
+ "the instruction bytes."));
+
+cl::opt<bool>
+llvm::UnwindInfo("unwind-info", cl::desc("Display unwind information"));
+
+static cl::alias
+UnwindInfoShort("u", cl::desc("Alias for --unwind-info"),
+ cl::aliasopt(UnwindInfo));
+
+cl::opt<bool>
+llvm::PrivateHeaders("private-headers",
+ cl::desc("Display format specific file headers"));
+
+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) {
+ if (!EC)
+ return false;
+
+ outs() << ToolName << ": error reading file: " << EC.message() << ".\n";
+ outs().flush();
+ ReturnValue = EXIT_FAILURE;
+ return true;
+}
+
+static void report_error(StringRef File, std::error_code EC) {
+ assert(EC);
+ errs() << ToolName << ": '" << File << "': " << EC.message() << ".\n";
+ ReturnValue = EXIT_FAILURE;
+}
+
+static const Target *getTarget(const ObjectFile *Obj = nullptr) {
+ // Figure out the target triple.
+ llvm::Triple TheTriple("unknown-unknown-unknown");
+ if (TripleName.empty()) {
+ if (Obj) {
+ TheTriple.setArch(Triple::ArchType(Obj->getArch()));
+ // TheTriple defaults to ELF, and COFF doesn't have an environment:
+ // the best we can do here is indicate that it is mach-o.
+ if (Obj->isMachO())
+ TheTriple.setObjectFormat(Triple::MachO);
+
+ if (Obj->isCOFF()) {
+ const auto COFFObj = dyn_cast<COFFObjectFile>(Obj);
+ if (COFFObj->getArch() == Triple::thumb)
+ TheTriple.setTriple("thumbv7-windows");
+ }
+ }
+ } else
+ TheTriple.setTriple(Triple::normalize(TripleName));
+
+ // Get the target specific parser.
+ std::string Error;
+ const Target *TheTarget = TargetRegistry::lookupTarget(ArchName, TheTriple,
+ Error);
+ if (!TheTarget) {
+ errs() << ToolName << ": " << Error;
+ return nullptr;
+ }
+
+ // Update the triple name and return the found target.
+ TripleName = TheTriple.getTriple();
+ return TheTarget;
+}
+
+bool llvm::RelocAddressLess(RelocationRef a, RelocationRef b) {
+ return a.getOffset() < b.getOffset();
+}
+
+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;
+ }
+}
+}
+
+template <class ELFT>
+static std::error_code getRelocationValueString(const ELFObjectFile<ELFT> *Obj,
+ DataRefImpl Rel,
+ SmallVectorImpl<char> &Result) {
+ typedef typename ELFObjectFile<ELFT>::Elf_Sym Elf_Sym;
+ typedef typename ELFObjectFile<ELFT>::Elf_Shdr Elf_Shdr;
+ typedef typename ELFObjectFile<ELFT>::Elf_Rel Elf_Rel;
+ 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;
+ StringRef res;
+ int64_t addend = 0;
+ uint16_t symbol_index = 0;
+ switch (Sec->sh_type) {
+ default:
+ return object_error::parse_failed;
+ case ELF::SHT_REL: {
+ const Elf_Rel *ERel = Obj->getRel(Rel);
+ type = ERel->getType(EF.isMips64EL());
+ symbol_index = ERel->getSymbol(EF.isMips64EL());
+ // TODO: Read implicit addend from section data.
+ break;
+ }
+ case ELF::SHT_RELA: {
+ const Elf_Rela *ERela = Obj->getRela(Rel);
+ type = ERela->getType(EF.isMips64EL());
+ symbol_index = ERela->getSymbol(EF.isMips64EL());
+ addend = ERela->r_addend;
+ break;
+ }
+ }
+ const Elf_Sym *symb =
+ EF.template getEntry<Elf_Sym>(Sec->sh_link, symbol_index);
+ StringRef Target;
+ ErrorOr<const Elf_Shdr *> SymSec = EF.getSection(symb);
+ if (std::error_code EC = SymSec.getError())
+ return EC;
+ if (symb->getType() == ELF::STT_SECTION) {
+ 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_ARM:
+ case ELF::EM_HEXAGON:
+ case ELF::EM_MIPS:
+ res = Target;
+ break;
+ default:
+ res = "Unknown";
+ }
+ if (Result.empty())
+ Result.append(res.begin(), res.end());
+ return std::error_code();
+}
+
+static std::error_code getRelocationValueString(const ELFObjectFileBase *Obj,
+ const RelocationRef &RelRef,
+ SmallVectorImpl<char> &Result) {
+ DataRefImpl Rel = RelRef.getRawDataRefImpl();
+ 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 : O->sections()) {
+ 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();
+ if (!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;
+ if (MAttrs.size()) {
+ SubtargetFeatures Features;
+ for (unsigned i = 0; i != MAttrs.size(); ++i)
+ Features.AddFeature(MAttrs[i]);
+ FeaturesStr = Features.getString();
+ }
+
+ std::unique_ptr<const MCRegisterInfo> MRI(
+ TheTarget->createMCRegInfo(TripleName));
+ if (!MRI) {
+ errs() << "error: no register info for target " << TripleName << "\n";
+ return;
+ }
+
+ // 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;
+ }
+
+ std::unique_ptr<const MCSubtargetInfo> STI(
+ TheTarget->createMCSubtargetInfo(TripleName, MCPU, FeaturesStr));
+ if (!STI) {
+ errs() << "error: no subtarget info for target " << TripleName << "\n";
+ return;
+ }
+
+ std::unique_ptr<const MCInstrInfo> MII(TheTarget->createMCInstrInfo());
+ if (!MII) {
+ errs() << "error: no instruction info for target " << TripleName << "\n";
+ return;
+ }
+
+ 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;
+ }
+
+ 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;
+ }
+ IP->setPrintImmHex(PrintImmHex);
+ PrettyPrinter &PIP = selectPrettyPrinter(Triple(TripleName));
+
+ StringRef Fmt = Obj->getBytesInAddress() > 4 ? "\t\t%016" PRIx64 ": " :
+ "\t\t\t%08" PRIx64 ": ";
+
+ // Create a mapping, RelocSecs = SectionRelocMap[S], where sections
+ // 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()) {
+ section_iterator Sec2 = Section.getRelocatedSection();
+ if (Sec2 != Obj->section_end())
+ SectionRelocMap[*Sec2].push_back(Section);
+ }
+
+ // Create a mapping from virtual address to symbol name. This is used to
+ // pretty print the target of a call.
+ std::vector<std::pair<uint64_t, StringRef>> AllSymbols;
+ if (MIA) {
+ for (const SymbolRef &Symbol : Obj->symbols()) {
+ if (Symbol.getType() != SymbolRef::ST_Function)
+ continue;
+
+ ErrorOr<uint64_t> AddressOrErr = Symbol.getAddress();
+ if (error(AddressOrErr.getError()))
+ break;
+ uint64_t Address = *AddressOrErr;
+
+ ErrorOr<StringRef> Name = Symbol.getName();
+ if (error(Name.getError()))
+ break;
+ if (Name->empty())
+ continue;
+ AllSymbols.push_back(std::make_pair(Address, *Name));
+ }
+
+ array_pod_sort(AllSymbols.begin(), AllSymbols.end());
+ }
+
+ for (const SectionRef &Section : Obj->sections()) {
+ if (!Section.isText() || Section.isVirtual())
+ continue;
+
+ uint64_t SectionAddr = Section.getAddress();
+ uint64_t SectSize = Section.getSize();
+ 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)) {
+ ErrorOr<uint64_t> AddressOrErr = Symbol.getAddress();
+ if (error(AddressOrErr.getError()))
+ break;
+ uint64_t Address = *AddressOrErr;
+ Address -= SectionAddr;
+ if (Address >= SectSize)
+ continue;
+
+ ErrorOr<StringRef> Name = Symbol.getName();
+ if (error(Name.getError()))
+ break;
+ Symbols.push_back(std::make_pair(Address, *Name));
+ }
+ }
+
+ // Sort the symbols by address, just in case they didn't come in that way.
+ array_pod_sort(Symbols.begin(), Symbols.end());
+
+ // Make a list of all the relocations for this section.
+ std::vector<RelocationRef> Rels;
+ if (InlineRelocs) {
+ for (const SectionRef &RelocSec : SectionRelocMap[Section]) {
+ for (const RelocationRef &Reloc : RelocSec.relocations()) {
+ Rels.push_back(Reloc);
+ }
+ }
+ }
+
+ // Sort relocations by address.
+ std::sort(Rels.begin(), Rels.end(), RelocAddressLess);
+
+ StringRef SegmentName = "";
+ if (const MachOObjectFile *MachO = dyn_cast<const MachOObjectFile>(Obj)) {
+ DataRefImpl DR = Section.getRawDataRefImpl();
+ SegmentName = MachO->getSectionFinalSegmentName(DR);
+ }
+ StringRef name;
+ if (error(Section.getName(name)))
+ break;
+ outs() << "Disassembly of section ";
+ if (!SegmentName.empty())
+ outs() << SegmentName << ",";
+ outs() << 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(0, name));
+
+ SmallString<40> Comments;
+ raw_svector_ostream CommentStream(Comments);
+
+ StringRef BytesStr;
+ if (error(Section.getContents(BytesStr)))
+ break;
+ ArrayRef<uint8_t> Bytes(reinterpret_cast<const uint8_t *>(BytesStr.data()),
+ BytesStr.size());
+
+ uint64_t Size;
+ uint64_t Index;
+
+ std::vector<RelocationRef>::const_iterator rel_cur = Rels.begin();
+ std::vector<RelocationRef>::const_iterator rel_end = Rels.end();
+ // 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;
+ // If this symbol has the same address as the next symbol, then skip it.
+ if (Start == End)
+ continue;
+
+ outs() << '\n' << Symbols[si].second << ":\n";
+
+#ifndef NDEBUG
+ raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
+#else
+ raw_ostream &DebugOut = nulls();
+#endif
+
+ for (Index = Start; Index < End; Index += Size) {
+ MCInst Inst;
+
+ if (DisAsm->getInstruction(Inst, Size, Bytes.slice(Index),
+ SectionAddr + Index, DebugOut,
+ CommentStream)) {
+ PIP.printInst(*IP, &Inst,
+ Bytes.slice(Index, Size),
+ SectionAddr + Index, outs(), "", *STI);
+ outs() << CommentStream.str();
+ Comments.clear();
+ if (MIA && (MIA->isCall(Inst) || MIA->isUnconditionalBranch(Inst) ||
+ MIA->isConditionalBranch(Inst))) {
+ uint64_t Target;
+ if (MIA->evaluateBranch(Inst, SectionAddr + Index, Size, Target)) {
+ auto TargetSym = std::upper_bound(
+ AllSymbols.begin(), AllSymbols.end(), Target,
+ [](uint64_t LHS, const std::pair<uint64_t, StringRef> &RHS) {
+ return LHS < RHS.first;
+ });
+ if (TargetSym != AllSymbols.begin())
+ --TargetSym;
+ else
+ TargetSym = AllSymbols.end();
+
+ if (TargetSym != AllSymbols.end()) {
+ outs() << " <" << TargetSym->second;
+ uint64_t Disp = Target - TargetSym->first;
+ if (Disp)
+ outs() << '+' << utohexstr(Disp);
+ outs() << '>';
+ }
+ }
+ }
+ outs() << "\n";
+ } else {
+ errs() << ToolName << ": warning: invalid instruction encoding\n";
+ if (Size == 0)
+ Size = 1; // skip illegible bytes
+ }
+
+ // Print relocation for instruction.
+ while (rel_cur != rel_end) {
+ 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 (hidden) goto skip_print_rel;
+
+ // Stop when rel_cur's address is past the current instruction.
+ if (addr >= Index + Size) break;
+ rel_cur->getTypeName(name);
+ if (error(getRelocationValueString(*rel_cur, val)))
+ goto skip_print_rel;
+ outs() << format(Fmt.data(), SectionAddr + addr) << name
+ << "\t" << val << "\n";
+
+ skip_print_rel:
+ ++rel_cur;
+ }
+ }
+ }
+ }
+}
+
+void llvm::PrintRelocations(const ObjectFile *Obj) {
+ StringRef Fmt = Obj->getBytesInAddress() > 4 ? "%016" PRIx64 :
+ "%08" PRIx64;
+ // Regular objdump doesn't print relocations in non-relocatable object
+ // files.
+ if (!Obj->isRelocatableObject())
+ return;
+
+ for (const SectionRef &Section : Obj->sections()) {
+ if (Section.relocation_begin() == Section.relocation_end())
+ continue;
+ StringRef secname;
+ if (error(Section.getName(secname)))
+ continue;
+ outs() << "RELOCATION RECORDS FOR [" << secname << "]:\n";
+ for (const RelocationRef &Reloc : Section.relocations()) {
+ bool hidden = getHidden(Reloc);
+ uint64_t address = Reloc.getOffset();
+ SmallString<32> relocname;
+ SmallString<32> valuestr;
+ if (hidden)
+ continue;
+ Reloc.getTypeName(relocname);
+ if (error(getRelocationValueString(Reloc, valuestr)))
+ continue;
+ outs() << format(Fmt.data(), address) << " " << relocname << " "
+ << valuestr << "\n";
+ }
+ outs() << "\n";
+ }
+}
+
+void llvm::PrintSectionHeaders(const ObjectFile *Obj) {
+ outs() << "Sections:\n"
+ "Idx Name Size Address Type\n";
+ unsigned i = 0;
+ for (const SectionRef &Section : Obj->sections()) {
+ StringRef Name;
+ if (error(Section.getName(Name)))
+ return;
+ uint64_t Address = Section.getAddress();
+ uint64_t Size = Section.getSize();
+ bool Text = Section.isText();
+ bool Data = Section.isData();
+ bool BSS = Section.isBSS();
+ std::string Type = (std::string(Text ? "TEXT " : "") +
+ (Data ? "DATA " : "") + (BSS ? "BSS" : ""));
+ outs() << format("%3d %-13s %08" PRIx64 " %016" PRIx64 " %s\n", i,
+ Name.str().c_str(), Size, Address, Type.c_str());
+ ++i;
+ }
+}
+
+void llvm::PrintSectionContents(const ObjectFile *Obj) {
+ std::error_code EC;
+ for (const SectionRef &Section : Obj->sections()) {
+ StringRef Name;
+ StringRef Contents;
+ if (error(Section.getName(Name)))
+ continue;
+ uint64_t BaseAddr = Section.getAddress();
+ uint64_t Size = Section.getSize();
+ if (!Size)
+ continue;
+
+ outs() << "Contents of section " << Name << ":\n";
+ if (Section.isBSS()) {
+ outs() << format("<skipping contents of bss section at [%04" PRIx64
+ ", %04" PRIx64 ")>\n",
+ BaseAddr, BaseAddr + Size);
+ continue;
+ }
+
+ if (error(Section.getContents(Contents)))
+ continue;
+
+ // Dump out the content as hex and printable ascii characters.
+ for (std::size_t addr = 0, end = Contents.size(); addr < end; addr += 16) {
+ outs() << format(" %04" PRIx64 " ", BaseAddr + addr);
+ // Dump line of hex.
+ for (std::size_t i = 0; i < 16; ++i) {
+ if (i != 0 && i % 4 == 0)
+ outs() << ' ';
+ if (addr + i < end)
+ outs() << hexdigit((Contents[addr + i] >> 4) & 0xF, true)
+ << hexdigit(Contents[addr + i] & 0xF, true);
+ else
+ outs() << " ";
+ }
+ // Print ascii.
+ outs() << " ";
+ for (std::size_t i = 0; i < 16 && addr + i < end; ++i) {
+ if (std::isprint(static_cast<unsigned char>(Contents[addr + i]) & 0xFF))
+ outs() << Contents[addr + i];
+ else
+ outs() << ".";
+ }
+ outs() << "\n";
+ }
+ }
+}
+
+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);
+ return;
+ }
+ for (const SymbolRef &Symbol : o->symbols()) {
+ ErrorOr<uint64_t> AddressOrError = Symbol.getAddress();
+ if (error(AddressOrError.getError()))
+ continue;
+ uint64_t Address = *AddressOrError;
+ SymbolRef::Type Type = Symbol.getType();
+ uint32_t Flags = Symbol.getFlags();
+ section_iterator Section = o->section_end();
+ if (error(Symbol.getSection(Section)))
+ continue;
+ StringRef Name;
+ if (Type == SymbolRef::ST_Debug && Section != o->section_end()) {
+ Section->getName(Name);
+ } else {
+ ErrorOr<StringRef> NameOrErr = Symbol.getName();
+ if (error(NameOrErr.getError()))
+ continue;
+ 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;
+
+ char GlobLoc = ' ';
+ if (Type != SymbolRef::ST_Unknown)
+ GlobLoc = Global ? 'g' : 'l';
+ char Debug = (Type == SymbolRef::ST_Debug || Type == SymbolRef::ST_File)
+ ? 'd' : ' ';
+ char FileFunc = ' ';
+ if (Type == SymbolRef::ST_File)
+ FileFunc = 'f';
+ else if (Type == SymbolRef::ST_Function)
+ FileFunc = 'F';
+
+ const char *Fmt = o->getBytesInAddress() > 4 ? "%016" PRIx64 :
+ "%08" PRIx64;
+
+ outs() << format(Fmt, Address) << " "
+ << GlobLoc // Local -> 'l', Global -> 'g', Neither -> ' '
+ << (Weak ? 'w' : ' ') // Weak?
+ << ' ' // Constructor. Not supported yet.
+ << ' ' // Warning. Not supported yet.
+ << ' ' // Indirect reference to another symbol.
+ << Debug // Debugging (d) or dynamic (D) symbol.
+ << FileFunc // Name of function (F), file (f) or object (O).
+ << ' ';
+ if (Absolute) {
+ outs() << "*ABS*";
+ } else if (Common) {
+ outs() << "*COM*";
+ } else if (Section == o->section_end()) {
+ outs() << "*UND*";
+ } else {
+ if (const MachOObjectFile *MachO =
+ dyn_cast<const MachOObjectFile>(o)) {
+ DataRefImpl DR = Section->getRawDataRefImpl();
+ StringRef SegmentName = MachO->getSectionFinalSegmentName(DR);
+ outs() << SegmentName << ",";
+ }
+ StringRef SectionName;
+ if (error(Section->getName(SectionName)))
+ SectionName = "";
+ outs() << SectionName;
+ }
+
+ 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 PrintUnwindInfo(const ObjectFile *o) {
+ outs() << "Unwind info:\n\n";
+
+ if (const COFFObjectFile *coff = dyn_cast<COFFObjectFile>(o)) {
+ printCOFFUnwindInfo(coff);
+ } else if (const MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o))
+ printMachOUnwindInfo(MachO);
+ else {
+ // TODO: Extract DWARF dump tool to objdump.
+ errs() << "This operation is only currently supported "
+ "for COFF and MachO object files.\n";
+ return;
+ }
+}
+
+void llvm::printExportsTrie(const ObjectFile *o) {
+ outs() << "Exports trie:\n";
+ if (const MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o))
+ printMachOExportsTrie(MachO);
+ else {
+ errs() << "This operation is only currently supported "
+ "for Mach-O executable files.\n";
+ return;
+ }
+}
+
+void llvm::printRebaseTable(const ObjectFile *o) {
+ outs() << "Rebase table:\n";
+ if (const MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o))
+ printMachORebaseTable(MachO);
+ else {
+ errs() << "This operation is only currently supported "
+ "for Mach-O executable files.\n";
+ return;
+ }
+}
+
+void llvm::printBindTable(const ObjectFile *o) {
+ outs() << "Bind table:\n";
+ if (const MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o))
+ printMachOBindTable(MachO);
+ else {
+ errs() << "This operation is only currently supported "
+ "for Mach-O executable files.\n";
+ return;
+ }
+}
+
+void llvm::printLazyBindTable(const ObjectFile *o) {
+ outs() << "Lazy bind table:\n";
+ if (const MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o))
+ printMachOLazyBindTable(MachO);
+ else {
+ errs() << "This operation is only currently supported "
+ "for Mach-O executable files.\n";
+ return;
+ }
+}
+
+void llvm::printWeakBindTable(const ObjectFile *o) {
+ outs() << "Weak bind table:\n";
+ if (const MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o))
+ printMachOWeakBindTable(MachO);
+ else {
+ errs() << "This operation is only currently supported "
+ "for Mach-O executable files.\n";
+ return;
+ }
+}
+
+/// 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 : Obj->sections()) {
+ StringRef Name;
+ Sec.getName(Name);
+ if (Name == ClangASTSectionName) {
+ ClangASTSection = Sec;
+ break;
+ }
+ }
+ if (!ClangASTSection)
+ return;
+
+ StringRef ClangASTContents;
+ if (error(ClangASTSection.getValue().getContents(ClangASTContents))) {
+ errs() << "Could not read the " << ClangASTSectionName << " section!\n";
+ return;
+ }
+
+ 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 : Obj->sections()) {
+ 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;
+ if (error(FaultMapSection.getValue().getContents(FaultMapContents))) {
+ errs() << "Could not read the " << FaultMapContents << " section!\n";
+ return;
+ }
+
+ FaultMapParser FMP(FaultMapContents.bytes_begin(),
+ FaultMapContents.bytes_end());
+
+ outs() << FMP;
+}
+
+static void printPrivateFileHeader(const ObjectFile *o) {
+ if (o->isELF()) {
+ printELFFileHeader(o);
+ } else if (o->isCOFF()) {
+ printCOFFFileHeader(o);
+ } else if (o->isMachO()) {
+ printMachOFileHeader(o);
+ }
+}
+
+static void DumpObject(const ObjectFile *o) {
+ // 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 (Relocations && !Disassemble)
+ PrintRelocations(o);
+ if (SectionHeaders)
+ PrintSectionHeaders(o);
+ if (SectionContents)
+ PrintSectionContents(o);
+ if (SymbolTable)
+ PrintSymbolTable(o);
+ if (UnwindInfo)
+ PrintUnwindInfo(o);
+ if (PrivateHeaders)
+ printPrivateFileHeader(o);
+ if (ExportsTrie)
+ printExportsTrie(o);
+ if (Rebase)
+ printRebaseTable(o);
+ if (Bind)
+ printBindTable(o);
+ if (LazyBind)
+ 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.
+ if (EC != object_error::invalid_file_type)
+ report_error(a->getFileName(), EC);
+ continue;
+ }
+ if (ObjectFile *o = dyn_cast<ObjectFile>(&*ChildOrErr.get()))
+ DumpObject(o);
+ else
+ 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)) {
+ report_error(file, errc::no_such_file_or_directory);
+ 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
+ // be used to select specific slices, etc.
+ if (MachOOpt) {
+ ParseInputMachO(file);
+ return;
+ }
+
+ // Attempt to open the binary.
+ ErrorOr<OwningBinary<Binary>> BinaryOrErr = createBinary(file);
+ if (std::error_code EC = BinaryOrErr.getError()) {
+ report_error(file, EC);
+ return;
+ }
+ Binary &Binary = *BinaryOrErr.get().getBinary();
+
+ if (Archive *a = dyn_cast<Archive>(&Binary))
+ DumpArchive(a);
+ else if (ObjectFile *o = dyn_cast<ObjectFile>(&Binary))
+ DumpObject(o);
+ else
+ report_error(file, object_error::invalid_file_type);
+}
+
+int main(int argc, char **argv) {
+ // Print a stack trace if we signal out.
+ sys::PrintStackTraceOnErrorSignal();
+ PrettyStackTraceProgram X(argc, argv);
+ llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
+
+ // Initialize targets and assembly printers/parsers.
+ llvm::InitializeAllTargetInfos();
+ llvm::InitializeAllTargetMCs();
+ llvm::InitializeAllAsmParsers();
+ llvm::InitializeAllDisassemblers();
+
+ // Register the target printer for --version.
+ cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
+
+ cl::ParseCommandLineOptions(argc, argv, "llvm object file dumper\n");
+ TripleName = Triple::normalize(TripleName);
+
+ ToolName = argv[0];
+
+ // Defaults to a.out if no filenames specified.
+ if (InputFilenames.size() == 0)
+ InputFilenames.push_back("a.out");
+
+ if (!Disassemble
+ && !Relocations
+ && !SectionHeaders
+ && !SectionContents
+ && !SymbolTable
+ && !UnwindInfo
+ && !PrivateHeaders
+ && !ExportsTrie
+ && !Rebase
+ && !Bind
+ && !LazyBind
+ && !WeakBind
+ && !RawClangAST
+ && !(UniversalHeaders && MachOOpt)
+ && !(ArchiveHeaders && MachOOpt)
+ && !(IndirectSymbols && MachOOpt)
+ && !(DataInCode && MachOOpt)
+ && !(LinkOptHints && MachOOpt)
+ && !(InfoPlist && MachOOpt)
+ && !(DylibsUsed && MachOOpt)
+ && !(DylibId && MachOOpt)
+ && !(ObjcMetaData && MachOOpt)
+ && !(DumpSections.size() != 0 && MachOOpt)
+ && !PrintFaultMaps) {
+ cl::PrintHelpMessage();
+ return 2;
+ }
+
+ std::for_each(InputFilenames.begin(), InputFilenames.end(),
+ DumpInput);
+
+ return ReturnValue;
+}
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