// 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 "MCFunction.h"
-#include "llvm/Object/ObjectFile.h"
-#include "llvm/ADT/OwningPtr.h"
-#include "llvm/ADT/Triple.h"
+#include "llvm-objdump.h"
#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Triple.h"
#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCAtom.h"
+#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCDisassembler.h"
+#include "llvm/MC/MCFunction.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstPrinter.h"
-#include "llvm/MC/MCInstrDesc.h"
+#include "llvm/MC/MCInstrAnalysis.h"
#include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCModule.h"
+#include "llvm/MC/MCModuleYAML.h"
+#include "llvm/MC/MCObjectDisassembler.h"
+#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/MC/MCObjectSymbolizer.h"
+#include "llvm/MC/MCRegisterInfo.h"
+#include "llvm/MC/MCRelocationInfo.h"
+#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/Object/Archive.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/FileSystem.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/GraphWriter.h"
#include "llvm/Support/Host.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 "llvm/Support/system_error.h"
-#include "llvm/Target/TargetRegistry.h"
-#include "llvm/Target/TargetSelect.h"
#include <algorithm>
+#include <cctype>
#include <cstring>
+
using namespace llvm;
using namespace object;
-namespace {
- cl::list<std::string>
- InputFilenames(cl::Positional, cl::desc("<input object files>"),
- cl::ZeroOrMore);
+static cl::list<std::string>
+InputFilenames(cl::Positional, cl::desc("<input object files>"),cl::ZeroOrMore);
- cl::opt<bool>
- Disassemble("disassemble",
- cl::desc("Display assembler mnemonics for the machine instructions"));
- cl::alias
- Disassembled("d", cl::desc("Alias for --disassemble"),
- cl::aliasopt(Disassemble));
+static cl::opt<bool>
+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>
- CFG("cfg", cl::desc("Create a CFG for every symbol in the object file and"
- "write it to a graphviz file"));
+static cl::opt<bool>
+Relocations("r", cl::desc("Display the relocation entries in the file"));
- cl::opt<std::string>
- TripleName("triple", cl::desc("Target triple to disassemble for, "
- "see -version for available targets"));
+static cl::opt<bool>
+SectionContents("s", cl::desc("Display the content of each section"));
- cl::opt<std::string>
- ArchName("arch", cl::desc("Target arch to disassemble for, "
- "see -version for available targets"));
+static cl::opt<bool>
+SymbolTable("t", cl::desc("Display the symbol table"));
- StringRef ToolName;
+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));
- bool error(error_code ec) {
- if (!ec) return false;
+cl::opt<std::string>
+llvm::TripleName("triple", cl::desc("Target triple to disassemble for, "
+ "see -version for available targets"));
- outs() << ToolName << ": error reading file: " << ec.message() << ".\n";
- outs().flush();
- return true;
- }
+cl::opt<std::string>
+llvm::ArchName("arch", cl::desc("Target arch to disassemble for, "
+ "see -version for available targets"));
+
+static cl::opt<bool>
+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));
+
+static cl::list<std::string>
+MAttrs("mattr",
+ cl::CommaSeparated,
+ cl::desc("Target specific attributes"),
+ cl::value_desc("a1,+a2,-a3,..."));
+
+static cl::opt<bool>
+NoShowRawInsn("no-show-raw-insn", cl::desc("When disassembling instructions, "
+ "do not print the instruction bytes."));
+
+static cl::opt<bool>
+UnwindInfo("unwind-info", cl::desc("Display unwind information"));
+
+static cl::alias
+UnwindInfoShort("u", cl::desc("Alias for --unwind-info"),
+ cl::aliasopt(UnwindInfo));
+
+static cl::opt<bool>
+PrivateHeaders("private-headers",
+ cl::desc("Display format specific file headers"));
+
+static cl::alias
+PrivateHeadersShort("p", cl::desc("Alias for --private-headers"),
+ cl::aliasopt(PrivateHeaders));
+
+static cl::opt<bool>
+Symbolize("symbolize", cl::desc("When disassembling instructions, "
+ "try to symbolize operands."));
+
+static cl::opt<bool>
+CFG("cfg", cl::desc("Create a CFG for every function found in the object"
+ " and write it to a graphviz file"));
+
+// FIXME: Does it make sense to have a dedicated tool for yaml cfg output?
+static cl::opt<std::string>
+YAMLCFG("yaml-cfg",
+ cl::desc("Create a CFG and write it as a YAML MCModule."),
+ cl::value_desc("yaml output file"));
+
+static StringRef ToolName;
+
+bool llvm::error(error_code EC) {
+ if (!EC)
+ return false;
+
+ outs() << ToolName << ": error reading file: " << EC.message() << ".\n";
+ outs().flush();
+ return true;
}
-static const Target *GetTarget(const ObjectFile *Obj = NULL) {
+static const Target *getTarget(const ObjectFile *Obj = NULL) {
// Figure out the target triple.
- llvm::Triple TT("unknown-unknown-unknown");
+ llvm::Triple TheTriple("unknown-unknown-unknown");
if (TripleName.empty()) {
- if (Obj)
- TT.setArch(Triple::ArchType(Obj->getArch()));
+ 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);
+ }
} else
- TT.setTriple(Triple::normalize(TripleName));
-
- if (!ArchName.empty())
- TT.setArchName(ArchName);
-
- TripleName = TT.str();
+ TheTriple.setTriple(Triple::normalize(TripleName));
// Get the target specific parser.
std::string Error;
- const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
- if (TheTarget)
- return TheTarget;
+ const Target *TheTarget = TargetRegistry::lookupTarget(ArchName, TheTriple,
+ Error);
+ if (!TheTarget) {
+ errs() << ToolName << ": " << Error;
+ return 0;
+ }
- errs() << ToolName << ": error: unable to get target for '" << TripleName
- << "', see --version and --triple.\n";
- return 0;
+ // Update the triple name and return the found target.
+ TripleName = TheTriple.getTriple();
+ return TheTarget;
}
-namespace {
-class StringRefMemoryObject : public MemoryObject {
-private:
- StringRef Bytes;
-public:
- StringRefMemoryObject(StringRef bytes) : Bytes(bytes) {}
+// Write a graphviz file for the CFG inside an MCFunction.
+// FIXME: Use GraphWriter
+static void emitDOTFile(const char *FileName, const MCFunction &f,
+ MCInstPrinter *IP) {
+ // Start a new dot file.
+ std::string Error;
+ raw_fd_ostream Out(FileName, Error, sys::fs::F_Text);
+ if (!Error.empty()) {
+ errs() << "llvm-objdump: warning: " << Error << '\n';
+ return;
+ }
- uint64_t getBase() const { return 0; }
- uint64_t getExtent() const { return Bytes.size(); }
+ Out << "digraph \"" << f.getName() << "\" {\n";
+ Out << "graph [ rankdir = \"LR\" ];\n";
+ for (MCFunction::const_iterator i = f.begin(), e = f.end(); i != e; ++i) {
+ // Only print blocks that have predecessors.
+ bool hasPreds = (*i)->pred_begin() != (*i)->pred_end();
+
+ if (!hasPreds && i != f.begin())
+ continue;
+
+ Out << '"' << (*i)->getInsts()->getBeginAddr() << "\" [ label=\"<a>";
+ // Print instructions.
+ for (unsigned ii = 0, ie = (*i)->getInsts()->size(); ii != ie;
+ ++ii) {
+ if (ii != 0) // Not the first line, start a new row.
+ Out << '|';
+ if (ii + 1 == ie) // Last line, add an end id.
+ Out << "<o>";
+
+ // Escape special chars and print the instruction in mnemonic form.
+ std::string Str;
+ raw_string_ostream OS(Str);
+ IP->printInst(&(*i)->getInsts()->at(ii).Inst, OS, "");
+ Out << DOT::EscapeString(OS.str());
+ }
+ Out << "\" shape=\"record\" ];\n";
- int readByte(uint64_t Addr, uint8_t *Byte) const {
- if (Addr >= getExtent())
- return -1;
- *Byte = Bytes[Addr];
- return 0;
+ // Add edges.
+ for (MCBasicBlock::succ_const_iterator si = (*i)->succ_begin(),
+ se = (*i)->succ_end(); si != se; ++si)
+ Out << (*i)->getInsts()->getBeginAddr() << ":o -> "
+ << (*si)->getInsts()->getBeginAddr() << ":a\n";
}
-};
+ Out << "}\n";
}
-static void DumpBytes(StringRef bytes) {
- static char hex_rep[] = "0123456789abcdef";
+void llvm::DumpBytes(StringRef bytes) {
+ static const char hex_rep[] = "0123456789abcdef";
// FIXME: The real way to do this is to figure out the longest instruction
// and align to that size before printing. I'll fix this when I get
// around to outputting relocations.
outs() << output;
}
-static void DisassembleInput(const StringRef &Filename) {
- OwningPtr<MemoryBuffer> Buff;
+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;
+}
- if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
- errs() << ToolName << ": " << Filename << ": " << ec.message() << "\n";
+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();
}
- OwningPtr<ObjectFile> Obj(ObjectFile::createObjectFile(Buff.take()));
+ std::unique_ptr<const MCRegisterInfo> MRI(
+ TheTarget->createMCRegInfo(TripleName));
+ if (!MRI) {
+ errs() << "error: no register info for target " << TripleName << "\n";
+ return;
+ }
- const Target *TheTarget = GetTarget(Obj.get());
- if (!TheTarget) {
- // GetTarget prints out stuff.
+ // 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;
}
- const MCInstrInfo *InstrInfo = TheTarget->createMCInstrInfo();
- outs() << '\n';
- outs() << Filename
- << ":\tfile format " << Obj->getFileFormatName() << "\n\n";
-
- error_code ec;
- for (ObjectFile::section_iterator i = Obj->begin_sections(),
- e = Obj->end_sections();
- i != e; i.increment(ec)) {
- if (error(ec)) break;
- bool text;
- if (error(i->isText(text))) break;
- if (!text) continue;
+ std::unique_ptr<const MCSubtargetInfo> STI(
+ TheTarget->createMCSubtargetInfo(TripleName, "", 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<MCDisassembler> DisAsm(TheTarget->createMCDisassembler(*STI));
+ if (!DisAsm) {
+ errs() << "error: no disassembler for target " << TripleName << "\n";
+ return;
+ }
+
+ std::unique_ptr<const MCObjectFileInfo> MOFI;
+ std::unique_ptr<MCContext> Ctx;
+
+ if (Symbolize) {
+ MOFI.reset(new MCObjectFileInfo);
+ Ctx.reset(new MCContext(AsmInfo.get(), MRI.get(), MOFI.get()));
+ std::unique_ptr<MCRelocationInfo> RelInfo(
+ TheTarget->createMCRelocationInfo(TripleName, *Ctx.get()));
+ if (RelInfo) {
+ std::unique_ptr<MCSymbolizer> Symzer(
+ MCObjectSymbolizer::createObjectSymbolizer(*Ctx.get(), RelInfo, Obj));
+ if (Symzer)
+ DisAsm->setSymbolizer(std::move(Symzer));
+ }
+ }
+
+ std::unique_ptr<const MCInstrAnalysis> MIA(
+ TheTarget->createMCInstrAnalysis(MII.get()));
+
+ int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
+ std::unique_ptr<MCInstPrinter> IP(TheTarget->createMCInstPrinter(
+ AsmPrinterVariant, *AsmInfo, *MII, *MRI, *STI));
+ if (!IP) {
+ errs() << "error: no instruction printer for target " << TripleName
+ << '\n';
+ return;
+ }
+
+ if (CFG || !YAMLCFG.empty()) {
+ std::unique_ptr<MCObjectDisassembler> OD(
+ new MCObjectDisassembler(*Obj, *DisAsm, *MIA));
+ std::unique_ptr<MCModule> Mod(OD->buildModule(/* withCFG */ true));
+ for (MCModule::const_atom_iterator AI = Mod->atom_begin(),
+ AE = Mod->atom_end();
+ AI != AE; ++AI) {
+ outs() << "Atom " << (*AI)->getName() << ": \n";
+ if (const MCTextAtom *TA = dyn_cast<MCTextAtom>(*AI)) {
+ for (MCTextAtom::const_iterator II = TA->begin(), IE = TA->end();
+ II != IE;
+ ++II) {
+ IP->printInst(&II->Inst, outs(), "");
+ outs() << "\n";
+ }
+ }
+ }
+ if (CFG) {
+ for (MCModule::const_func_iterator FI = Mod->func_begin(),
+ FE = Mod->func_end();
+ FI != FE; ++FI) {
+ static int filenum = 0;
+ emitDOTFile((Twine((*FI)->getName()) + "_" +
+ utostr(filenum) + ".dot").str().c_str(),
+ **FI, IP.get());
+ ++filenum;
+ }
+ }
+ if (!YAMLCFG.empty()) {
+ std::string Error;
+ raw_fd_ostream YAMLOut(YAMLCFG.c_str(), Error, sys::fs::F_Text);
+ if (!Error.empty()) {
+ errs() << ToolName << ": warning: " << Error << '\n';
+ return;
+ }
+ mcmodule2yaml(YAMLOut, *Mod, *MII, *MRI);
+ }
+ }
+
+ // Create a mapping, RelocSecs = SectionRelocMap[S], where sections
+ // in RelocSecs contain the relocations for section S.
+ 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);
+ }
+
+ for (const SectionRef &Section : Obj->sections()) {
+ bool Text;
+ if (error(Section.isText(Text)))
+ break;
+ if (!Text)
+ continue;
+
+ uint64_t SectionAddr;
+ if (error(Section.getAddress(SectionAddr)))
+ break;
+
+ uint64_t SectSize;
+ if (error(Section.getSize(SectSize)))
+ break;
// Make a list of all the symbols in this section.
- std::vector<std::pair<uint64_t, StringRef> > Symbols;
- for (ObjectFile::symbol_iterator si = Obj->begin_symbols(),
- se = Obj->end_symbols();
- si != se; si.increment(ec)) {
+ std::vector<std::pair<uint64_t, StringRef>> Symbols;
+ for (const SymbolRef &Symbol : Obj->symbols()) {
bool contains;
- if (!error(i->containsSymbol(*si, contains)) && contains) {
+ if (!error(Section.containsSymbol(Symbol, contains)) && contains) {
uint64_t Address;
- if (error(si->getAddress(Address))) break;
+ if (error(Symbol.getAddress(Address)))
+ break;
+ if (Address == UnknownAddressOrSize)
+ continue;
+ Address -= SectionAddr;
+ if (Address >= SectSize)
+ continue;
+
StringRef Name;
- if (error(si->getName(Name))) break;
+ if (error(Symbol.getName(Name)))
+ 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(i->getName(name))) break;
- outs() << "Disassembly of section " << name << ':';
+ if (error(Section.getName(name)))
+ break;
+ 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));
- // Set up disassembler.
- OwningPtr<const MCAsmInfo> AsmInfo(TheTarget->createMCAsmInfo(TripleName));
- if (!AsmInfo) {
- errs() << "error: no assembly info for target " << TripleName << "\n";
- return;
- }
-
- OwningPtr<const MCDisassembler> DisAsm(TheTarget->createMCDisassembler());
- if (!DisAsm) {
- errs() << "error: no disassembler for target " << TripleName << "\n";
- return;
- }
-
- int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
- OwningPtr<MCInstPrinter> IP(TheTarget->createMCInstPrinter(
- AsmPrinterVariant, *AsmInfo));
- if (!IP) {
- errs() << "error: no instruction printer for target " << TripleName << '\n';
- return;
- }
+ SmallString<40> Comments;
+ raw_svector_ostream CommentStream(Comments);
StringRef Bytes;
- if (error(i->getContents(Bytes))) break;
- StringRefMemoryObject memoryObject(Bytes);
+ if (error(Section.getContents(Bytes)))
+ break;
+ StringRefMemoryObject memoryObject(Bytes, SectionAddr);
uint64_t Size;
uint64_t Index;
- uint64_t SectSize;
- if (error(i->getSize(SectSize))) break;
+ 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;
- uint64_t End = si == se-1 ? SectSize : Symbols[si + 1].first - 1;
+ uint64_t End;
+ // The end is either the size of the section or the beginning of the next
+ // symbol.
+ if (si == se - 1)
+ End = SectSize;
+ // Make sure this symbol takes up space.
+ else if (Symbols[si + 1].first != Start)
+ End = Symbols[si + 1].first - 1;
+ else
+ // This symbol has the same address as the next symbol. Skip it.
+ continue;
+
outs() << '\n' << Symbols[si].second << ":\n";
#ifndef NDEBUG
- raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
+ raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
#else
- raw_ostream &DebugOut = nulls();
+ raw_ostream &DebugOut = nulls();
#endif
- if (!CFG) {
- for (Index = Start; Index < End; Index += Size) {
- MCInst Inst;
- if (DisAsm->getInstruction(Inst, Size, memoryObject, Index,
- DebugOut)) {
- uint64_t addr;
- if (error(i->getAddress(addr))) break;
- outs() << format("%8x:\t", addr + Index);
+ for (Index = Start; Index < End; Index += Size) {
+ MCInst Inst;
+
+ if (DisAsm->getInstruction(Inst, Size, memoryObject,
+ SectionAddr + Index,
+ DebugOut, CommentStream)) {
+ outs() << format("%8" PRIx64 ":", SectionAddr + Index);
+ if (!NoShowRawInsn) {
+ outs() << "\t";
DumpBytes(StringRef(Bytes.data() + Index, Size));
- IP->printInst(&Inst, outs());
- outs() << "\n";
- } else {
- errs() << ToolName << ": warning: invalid instruction encoding\n";
- if (Size == 0)
- Size = 1; // skip illegible bytes
}
+ IP->printInst(&Inst, outs(), "");
+ outs() << CommentStream.str();
+ Comments.clear();
+ outs() << "\n";
+ } else {
+ errs() << ToolName << ": warning: invalid instruction encoding\n";
+ if (Size == 0)
+ Size = 1; // skip illegible bytes
}
- } else {
- // Create CFG and use it for disassembly.
- MCFunction f =
- MCFunction::createFunctionFromMC(Symbols[si].second, DisAsm.get(),
- memoryObject, Start, End, InstrInfo,
- DebugOut);
-
- for (MCFunction::iterator fi = f.begin(), fe = f.end(); fi != fe; ++fi){
- bool hasPreds = false;
- // Only print blocks that have predecessors.
- // FIXME: Slow.
- for (MCFunction::iterator pi = f.begin(), pe = f.end(); pi != pe;
- ++pi)
- if (pi->second.contains(&fi->second)) {
- hasPreds = true;
- break;
- }
-
- // Data block.
- if (!hasPreds && fi != f.begin()) {
- uint64_t End = llvm::next(fi) == fe ? SectSize :
- llvm::next(fi)->first;
- uint64_t addr;
- if (error(i->getAddress(addr))) break;
- outs() << "# " << End-fi->first << " bytes of data:\n";
- for (unsigned pos = fi->first; pos != End; ++pos) {
- outs() << format("%8x:\t", addr + pos);
- DumpBytes(StringRef(Bytes.data() + pos, 1));
- outs() << format("\t.byte 0x%02x\n", (uint8_t)Bytes[pos]);
- }
- continue;
- }
+ // Print relocation for instruction.
+ while (rel_cur != rel_end) {
+ bool hidden = false;
+ uint64_t addr;
+ SmallString<16> name;
+ SmallString<32> val;
- if (fi->second.contains(&fi->second))
- outs() << "# Loop begin:\n";
-
- for (unsigned ii = 0, ie = fi->second.getInsts().size(); ii != ie;
- ++ii) {
- uint64_t addr;
- if (error(i->getAddress(addr))) break;
- const MCDecodedInst &Inst = fi->second.getInsts()[ii];
- outs() << format("%8x:\t", addr + Inst.Address);
- DumpBytes(StringRef(Bytes.data() + Inst.Address, Inst.Size));
- // Simple loops.
- if (fi->second.contains(&fi->second))
- outs() << '\t';
- IP->printInst(&Inst.Inst, outs());
- outs() << '\n';
- }
- }
+ // If this relocation is hidden, skip it.
+ if (error(rel_cur->getHidden(hidden))) goto skip_print_rel;
+ if (hidden) goto skip_print_rel;
- // Start a new dot file.
- std::string Error;
- raw_fd_ostream Out((f.getName().str() + ".dot").c_str(), Error);
- if (!Error.empty()) {
- errs() << ToolName << ": warning: " << Error << '\n';
- continue;
- }
+ 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;
- Out << "digraph " << f.getName() << " {\n";
- Out << "graph [ rankdir = \"LR\" ];\n";
- for (MCFunction::iterator i = f.begin(), e = f.end(); i != e; ++i) {
- bool hasPreds = false;
- // Only print blocks that have predecessors.
- // FIXME: Slow.
- for (MCFunction::iterator pi = f.begin(), pe = f.end(); pi != pe;
- ++pi)
- if (pi->second.contains(&i->second)) {
- hasPreds = true;
- break;
- }
-
- if (!hasPreds && i != f.begin())
- continue;
-
- Out << '"' << (uintptr_t)&i->second << "\" [ label=\"<a>";
- // Print instructions.
- for (unsigned ii = 0, ie = i->second.getInsts().size(); ii != ie;
- ++ii) {
- // Escape special chars and print the instruction in mnemonic form.
- std::string Str;
- raw_string_ostream OS(Str);
- IP->printInst(&i->second.getInsts()[ii].Inst, OS);
- Out << DOT::EscapeString(OS.str()) << '|';
- }
- Out << "<o>\" shape=\"record\" ];\n";
+ outs() << format("\t\t\t%8" PRIx64 ": ", SectionAddr + addr) << name
+ << "\t" << val << "\n";
- // Add edges.
- for (MCBasicBlock::succ_iterator si = i->second.succ_begin(),
- se = i->second.succ_end(); si != se; ++si)
- Out << (uintptr_t)&i->second << ":o -> " << (uintptr_t)*si <<":a\n";
+ skip_print_rel:
+ ++rel_cur;
}
- Out << "}\n";
}
}
}
}
+static void PrintRelocations(const ObjectFile *Obj) {
+ 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;
+ uint64_t address;
+ 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;
+ outs() << address << " " << relocname << " " << valuestr << "\n";
+ }
+ outs() << "\n";
+ }
+}
+
+static void 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;
+ if (error(Section.getAddress(Address)))
+ return;
+ uint64_t Size;
+ if (error(Section.getSize(Size)))
+ return;
+ bool Text, Data, BSS;
+ if (error(Section.isText(Text)))
+ return;
+ if (error(Section.isData(Data)))
+ return;
+ if (error(Section.isBSS(BSS)))
+ return;
+ 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;
+ }
+}
+
+static void PrintSectionContents(const ObjectFile *Obj) {
+ error_code EC;
+ for (const SectionRef &Section : Obj->sections()) {
+ StringRef Name;
+ StringRef Contents;
+ uint64_t BaseAddr;
+ bool BSS;
+ if (error(Section.getName(Name)))
+ continue;
+ if (error(Section.getContents(Contents)))
+ continue;
+ if (error(Section.getAddress(BaseAddr)))
+ continue;
+ if (error(Section.isBSS(BSS)))
+ continue;
+
+ outs() << "Contents of section " << Name << ":\n";
+ if (BSS) {
+ outs() << format("<skipping contents of bss section at [%04" PRIx64
+ ", %04" PRIx64 ")>\n", BaseAddr,
+ BaseAddr + Contents.size());
+ 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) {
+ const coff_file_header *header;
+ if (error(coff->getHeader(header))) return;
+ int aux_count = 0;
+ const coff_symbol *symbol = 0;
+ for (int i = 0, e = header->NumberOfSymbols; i != e; ++i) {
+ if (aux_count--) {
+ // Figure out which type of aux this is.
+ if (symbol->isSectionDefinition()) { // Section definition.
+ const coff_aux_section_definition *asd;
+ if (error(coff->getAuxSymbol<coff_aux_section_definition>(i, asd)))
+ return;
+ 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(asd->Number)
+ , unsigned(asd->Selection));
+ } else
+ outs() << "AUX Unknown\n";
+ } else {
+ StringRef name;
+ if (error(coff->getSymbol(i, symbol))) return;
+ if (error(coff->getSymbolName(symbol, name))) return;
+ outs() << "[" << format("%2d", i) << "]"
+ << "(sec " << format("%2d", int(symbol->SectionNumber)) << ")"
+ << "(fl 0x00)" // Flag bits, which COFF doesn't have.
+ << "(ty " << format("%3x", unsigned(symbol->Type)) << ")"
+ << "(scl " << format("%3x", unsigned(symbol->StorageClass)) << ") "
+ << "(nx " << unsigned(symbol->NumberOfAuxSymbols) << ") "
+ << "0x" << format("%08x", unsigned(symbol->Value)) << " "
+ << name << "\n";
+ aux_count = symbol->NumberOfAuxSymbols;
+ }
+ }
+}
+
+static void 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()) {
+ StringRef Name;
+ uint64_t Address;
+ SymbolRef::Type Type;
+ uint64_t Size;
+ 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;
+
+ bool Global = Flags & SymbolRef::SF_Global;
+ bool Weak = Flags & SymbolRef::SF_Weak;
+ bool Absolute = Flags & SymbolRef::SF_Absolute;
+
+ if (Address == UnknownAddressOrSize)
+ Address = 0;
+ if (Size == UnknownAddressOrSize)
+ Size = 0;
+ 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 (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'
+ << format("%08" PRIx64 " ", Size)
+ << Name
+ << '\n';
+ }
+}
+
+static void PrintUnwindInfo(const ObjectFile *o) {
+ outs() << "Unwind info:\n\n";
+
+ if (const COFFObjectFile *coff = dyn_cast<COFFObjectFile>(o)) {
+ printCOFFUnwindInfo(coff);
+ } else {
+ // TODO: Extract DWARF dump tool to objdump.
+ errs() << "This operation is only currently supported "
+ "for COFF object files.\n";
+ return;
+ }
+}
+
+static void printPrivateFileHeader(const ObjectFile *o) {
+ if (o->isELF()) {
+ printELFFileHeader(o);
+ } else if (o->isCOFF()) {
+ printCOFFFileHeader(o);
+ }
+}
+
+static void DumpObject(const ObjectFile *o) {
+ 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);
+}
+
+/// @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) {
+ std::unique_ptr<Binary> child;
+ if (error_code EC = i->getAsBinary(child)) {
+ // Ignore non-object files.
+ if (EC != object_error::invalid_file_type)
+ errs() << ToolName << ": '" << a->getFileName() << "': " << EC.message()
+ << ".\n";
+ continue;
+ }
+ if (ObjectFile *o = dyn_cast<ObjectFile>(child.get()))
+ DumpObject(o);
+ else
+ errs() << ToolName << ": '" << a->getFileName() << "': "
+ << "Unrecognized file type.\n";
+ }
+}
+
+/// @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 (MachOOpt && Disassemble) {
+ DisassembleInputMachO(file);
+ return;
+ }
+
+ // Attempt to open the binary.
+ ErrorOr<Binary *> BinaryOrErr = createBinary(file);
+ if (error_code EC = BinaryOrErr.getError()) {
+ errs() << ToolName << ": '" << file << "': " << EC.message() << ".\n";
+ return;
+ }
+ std::unique_ptr<Binary> binary(BinaryOrErr.get());
+
+ if (Archive *a = dyn_cast<Archive>(binary.get()))
+ DumpArchive(a);
+ else if (ObjectFile *o = dyn_cast<ObjectFile>(binary.get()))
+ DumpObject(o);
+ else
+ errs() << ToolName << ": '" << file << "': " << "Unrecognized file type.\n";
+}
+
int main(int argc, char **argv) {
// Print a stack trace if we signal out.
sys::PrintStackTraceOnErrorSignal();
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);
if (InputFilenames.size() == 0)
InputFilenames.push_back("a.out");
- // -d is the only flag that is currently implemented, so just print help if
- // it is not set.
- if (!Disassemble) {
+ if (!Disassemble
+ && !Relocations
+ && !SectionHeaders
+ && !SectionContents
+ && !SymbolTable
+ && !UnwindInfo
+ && !PrivateHeaders) {
cl::PrintHelpMessage();
return 2;
}
std::for_each(InputFilenames.begin(), InputFilenames.end(),
- DisassembleInput);
+ DumpInput);
return 0;
}
projects / oota-llvm.git / blobdiff