942 lines
30 KiB
C++
942 lines
30 KiB
C++
//===-- llvm-objdump.cpp - Object file dumping utility for llvm -----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This program is a utility that works like binutils "objdump", that is, it
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// dumps out a plethora of information about an object file depending on the
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// flags.
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//
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// The flags and output of this program should be near identical to those of
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// binutils objdump.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm-objdump.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/MC/MCAnalysis/MCAtom.h"
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#include "llvm/MC/MCAnalysis/MCFunction.h"
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#include "llvm/MC/MCAnalysis/MCModule.h"
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#include "llvm/MC/MCAnalysis/MCModuleYAML.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCDisassembler.h"
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#include "llvm/MC/MCInst.h"
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#include "llvm/MC/MCInstPrinter.h"
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#include "llvm/MC/MCInstrAnalysis.h"
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#include "llvm/MC/MCInstrInfo.h"
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#include "llvm/MC/MCObjectDisassembler.h"
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#include "llvm/MC/MCObjectFileInfo.h"
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#include "llvm/MC/MCObjectSymbolizer.h"
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#include "llvm/MC/MCRegisterInfo.h"
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#include "llvm/MC/MCRelocationInfo.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/Object/Archive.h"
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#include "llvm/Object/COFF.h"
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#include "llvm/Object/MachO.h"
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#include "llvm/Object/ObjectFile.h"
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#include "llvm/Support/Casting.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/GraphWriter.h"
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#include "llvm/Support/Host.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/MemoryObject.h"
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#include "llvm/Support/PrettyStackTrace.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/Support/SourceMgr.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Support/TargetSelect.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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#include <cctype>
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#include <cstring>
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#include <system_error>
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using namespace llvm;
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using namespace object;
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static cl::list<std::string>
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InputFilenames(cl::Positional, cl::desc("<input object files>"),cl::ZeroOrMore);
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static cl::opt<bool>
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Disassemble("disassemble",
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cl::desc("Display assembler mnemonics for the machine instructions"));
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static cl::alias
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Disassembled("d", cl::desc("Alias for --disassemble"),
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cl::aliasopt(Disassemble));
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static cl::opt<bool>
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Relocations("r", cl::desc("Display the relocation entries in the file"));
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static cl::opt<bool>
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SectionContents("s", cl::desc("Display the content of each section"));
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static cl::opt<bool>
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SymbolTable("t", cl::desc("Display the symbol table"));
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static cl::opt<bool>
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MachOOpt("macho", cl::desc("Use MachO specific object file parser"));
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static cl::alias
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MachOm("m", cl::desc("Alias for --macho"), cl::aliasopt(MachOOpt));
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cl::opt<std::string>
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llvm::TripleName("triple", cl::desc("Target triple to disassemble for, "
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"see -version for available targets"));
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cl::opt<std::string>
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llvm::ArchName("arch", cl::desc("Target arch to disassemble for, "
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"see -version for available targets"));
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static cl::opt<bool>
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SectionHeaders("section-headers", cl::desc("Display summaries of the headers "
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"for each section."));
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static cl::alias
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SectionHeadersShort("headers", cl::desc("Alias for --section-headers"),
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cl::aliasopt(SectionHeaders));
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static cl::alias
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SectionHeadersShorter("h", cl::desc("Alias for --section-headers"),
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cl::aliasopt(SectionHeaders));
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static cl::list<std::string>
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MAttrs("mattr",
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cl::CommaSeparated,
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cl::desc("Target specific attributes"),
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cl::value_desc("a1,+a2,-a3,..."));
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static cl::opt<bool>
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NoShowRawInsn("no-show-raw-insn", cl::desc("When disassembling instructions, "
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"do not print the instruction bytes."));
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static cl::opt<bool>
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UnwindInfo("unwind-info", cl::desc("Display unwind information"));
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static cl::alias
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UnwindInfoShort("u", cl::desc("Alias for --unwind-info"),
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cl::aliasopt(UnwindInfo));
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static cl::opt<bool>
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PrivateHeaders("private-headers",
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cl::desc("Display format specific file headers"));
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static cl::alias
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PrivateHeadersShort("p", cl::desc("Alias for --private-headers"),
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cl::aliasopt(PrivateHeaders));
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static cl::opt<bool>
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Symbolize("symbolize", cl::desc("When disassembling instructions, "
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"try to symbolize operands."));
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static cl::opt<bool>
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CFG("cfg", cl::desc("Create a CFG for every function found in the object"
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" and write it to a graphviz file"));
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// FIXME: Does it make sense to have a dedicated tool for yaml cfg output?
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static cl::opt<std::string>
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YAMLCFG("yaml-cfg",
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cl::desc("Create a CFG and write it as a YAML MCModule."),
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cl::value_desc("yaml output file"));
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static StringRef ToolName;
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bool llvm::error(std::error_code EC) {
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if (!EC)
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return false;
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outs() << ToolName << ": error reading file: " << EC.message() << ".\n";
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outs().flush();
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return true;
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}
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static const Target *getTarget(const ObjectFile *Obj = nullptr) {
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// Figure out the target triple.
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llvm::Triple TheTriple("unknown-unknown-unknown");
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if (TripleName.empty()) {
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if (Obj) {
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TheTriple.setArch(Triple::ArchType(Obj->getArch()));
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// TheTriple defaults to ELF, and COFF doesn't have an environment:
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// the best we can do here is indicate that it is mach-o.
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if (Obj->isMachO())
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TheTriple.setObjectFormat(Triple::MachO);
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if (Obj->isCOFF()) {
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const auto COFFObj = dyn_cast<COFFObjectFile>(Obj);
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if (COFFObj->getArch() == Triple::thumb)
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TheTriple.setTriple("thumbv7-windows");
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}
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}
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} else
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TheTriple.setTriple(Triple::normalize(TripleName));
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// Get the target specific parser.
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std::string Error;
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const Target *TheTarget = TargetRegistry::lookupTarget(ArchName, TheTriple,
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Error);
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if (!TheTarget) {
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errs() << ToolName << ": " << Error;
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return nullptr;
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}
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// Update the triple name and return the found target.
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TripleName = TheTriple.getTriple();
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return TheTarget;
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}
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// Write a graphviz file for the CFG inside an MCFunction.
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// FIXME: Use GraphWriter
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static void emitDOTFile(const char *FileName, const MCFunction &f,
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MCInstPrinter *IP) {
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// Start a new dot file.
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std::string Error;
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raw_fd_ostream Out(FileName, Error, sys::fs::F_Text);
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if (!Error.empty()) {
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errs() << "llvm-objdump: warning: " << Error << '\n';
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return;
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}
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Out << "digraph \"" << f.getName() << "\" {\n";
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Out << "graph [ rankdir = \"LR\" ];\n";
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for (MCFunction::const_iterator i = f.begin(), e = f.end(); i != e; ++i) {
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// Only print blocks that have predecessors.
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bool hasPreds = (*i)->pred_begin() != (*i)->pred_end();
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if (!hasPreds && i != f.begin())
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continue;
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Out << '"' << (*i)->getInsts()->getBeginAddr() << "\" [ label=\"<a>";
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// Print instructions.
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for (unsigned ii = 0, ie = (*i)->getInsts()->size(); ii != ie;
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++ii) {
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if (ii != 0) // Not the first line, start a new row.
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Out << '|';
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if (ii + 1 == ie) // Last line, add an end id.
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Out << "<o>";
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// Escape special chars and print the instruction in mnemonic form.
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std::string Str;
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raw_string_ostream OS(Str);
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IP->printInst(&(*i)->getInsts()->at(ii).Inst, OS, "");
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Out << DOT::EscapeString(OS.str());
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}
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Out << "\" shape=\"record\" ];\n";
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// Add edges.
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for (MCBasicBlock::succ_const_iterator si = (*i)->succ_begin(),
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se = (*i)->succ_end(); si != se; ++si)
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Out << (*i)->getInsts()->getBeginAddr() << ":o -> "
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<< (*si)->getInsts()->getBeginAddr() << ":a\n";
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}
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Out << "}\n";
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}
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void llvm::DumpBytes(StringRef bytes) {
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static const char hex_rep[] = "0123456789abcdef";
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// FIXME: The real way to do this is to figure out the longest instruction
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// and align to that size before printing. I'll fix this when I get
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// around to outputting relocations.
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// 15 is the longest x86 instruction
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// 3 is for the hex rep of a byte + a space.
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// 1 is for the null terminator.
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enum { OutputSize = (15 * 3) + 1 };
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char output[OutputSize];
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assert(bytes.size() <= 15
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&& "DumpBytes only supports instructions of up to 15 bytes");
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memset(output, ' ', sizeof(output));
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unsigned index = 0;
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for (StringRef::iterator i = bytes.begin(),
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e = bytes.end(); i != e; ++i) {
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output[index] = hex_rep[(*i & 0xF0) >> 4];
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output[index + 1] = hex_rep[*i & 0xF];
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index += 3;
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}
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output[sizeof(output) - 1] = 0;
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outs() << output;
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}
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bool llvm::RelocAddressLess(RelocationRef a, RelocationRef b) {
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uint64_t a_addr, b_addr;
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if (error(a.getOffset(a_addr))) return false;
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if (error(b.getOffset(b_addr))) return false;
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return a_addr < b_addr;
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}
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static void DisassembleObject(const ObjectFile *Obj, bool InlineRelocs) {
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const Target *TheTarget = getTarget(Obj);
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// getTarget() will have already issued a diagnostic if necessary, so
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// just bail here if it failed.
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if (!TheTarget)
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return;
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// Package up features to be passed to target/subtarget
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std::string FeaturesStr;
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if (MAttrs.size()) {
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SubtargetFeatures Features;
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for (unsigned i = 0; i != MAttrs.size(); ++i)
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Features.AddFeature(MAttrs[i]);
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FeaturesStr = Features.getString();
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}
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std::unique_ptr<const MCRegisterInfo> MRI(
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TheTarget->createMCRegInfo(TripleName));
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if (!MRI) {
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errs() << "error: no register info for target " << TripleName << "\n";
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return;
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}
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// Set up disassembler.
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std::unique_ptr<const MCAsmInfo> AsmInfo(
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TheTarget->createMCAsmInfo(*MRI, TripleName));
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if (!AsmInfo) {
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errs() << "error: no assembly info for target " << TripleName << "\n";
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return;
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}
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std::unique_ptr<const MCSubtargetInfo> STI(
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TheTarget->createMCSubtargetInfo(TripleName, "", FeaturesStr));
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if (!STI) {
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errs() << "error: no subtarget info for target " << TripleName << "\n";
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return;
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}
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std::unique_ptr<const MCInstrInfo> MII(TheTarget->createMCInstrInfo());
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if (!MII) {
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errs() << "error: no instruction info for target " << TripleName << "\n";
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return;
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}
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std::unique_ptr<const MCObjectFileInfo> MOFI(new MCObjectFileInfo);
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MCContext Ctx(AsmInfo.get(), MRI.get(), MOFI.get());
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std::unique_ptr<MCDisassembler> DisAsm(
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TheTarget->createMCDisassembler(*STI, Ctx));
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if (!DisAsm) {
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errs() << "error: no disassembler for target " << TripleName << "\n";
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return;
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}
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if (Symbolize) {
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std::unique_ptr<MCRelocationInfo> RelInfo(
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TheTarget->createMCRelocationInfo(TripleName, Ctx));
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if (RelInfo) {
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std::unique_ptr<MCSymbolizer> Symzer(
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MCObjectSymbolizer::createObjectSymbolizer(Ctx, std::move(RelInfo),
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Obj));
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if (Symzer)
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DisAsm->setSymbolizer(std::move(Symzer));
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}
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}
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std::unique_ptr<const MCInstrAnalysis> MIA(
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TheTarget->createMCInstrAnalysis(MII.get()));
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int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
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std::unique_ptr<MCInstPrinter> IP(TheTarget->createMCInstPrinter(
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AsmPrinterVariant, *AsmInfo, *MII, *MRI, *STI));
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if (!IP) {
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errs() << "error: no instruction printer for target " << TripleName
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<< '\n';
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return;
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}
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if (CFG || !YAMLCFG.empty()) {
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std::unique_ptr<MCObjectDisassembler> OD(
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new MCObjectDisassembler(*Obj, *DisAsm, *MIA));
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std::unique_ptr<MCModule> Mod(OD->buildModule(/* withCFG */ true));
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for (MCModule::const_atom_iterator AI = Mod->atom_begin(),
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AE = Mod->atom_end();
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AI != AE; ++AI) {
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outs() << "Atom " << (*AI)->getName() << ": \n";
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if (const MCTextAtom *TA = dyn_cast<MCTextAtom>(*AI)) {
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for (MCTextAtom::const_iterator II = TA->begin(), IE = TA->end();
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II != IE;
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++II) {
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IP->printInst(&II->Inst, outs(), "");
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outs() << "\n";
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}
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}
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}
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if (CFG) {
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for (MCModule::const_func_iterator FI = Mod->func_begin(),
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FE = Mod->func_end();
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FI != FE; ++FI) {
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static int filenum = 0;
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emitDOTFile((Twine((*FI)->getName()) + "_" +
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utostr(filenum) + ".dot").str().c_str(),
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**FI, IP.get());
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++filenum;
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}
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}
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if (!YAMLCFG.empty()) {
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std::string Error;
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raw_fd_ostream YAMLOut(YAMLCFG.c_str(), Error, sys::fs::F_Text);
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if (!Error.empty()) {
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errs() << ToolName << ": warning: " << Error << '\n';
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return;
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}
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mcmodule2yaml(YAMLOut, *Mod, *MII, *MRI);
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}
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}
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StringRef Fmt = Obj->getBytesInAddress() > 4 ? "\t\t%016" PRIx64 ": " :
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"\t\t\t%08" PRIx64 ": ";
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// Create a mapping, RelocSecs = SectionRelocMap[S], where sections
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// in RelocSecs contain the relocations for section S.
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std::error_code EC;
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std::map<SectionRef, SmallVector<SectionRef, 1>> SectionRelocMap;
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for (const SectionRef &Section : Obj->sections()) {
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section_iterator Sec2 = Section.getRelocatedSection();
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if (Sec2 != Obj->section_end())
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SectionRelocMap[*Sec2].push_back(Section);
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}
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for (const SectionRef &Section : Obj->sections()) {
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bool Text;
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if (error(Section.isText(Text)))
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break;
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if (!Text)
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continue;
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uint64_t SectionAddr;
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if (error(Section.getAddress(SectionAddr)))
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break;
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uint64_t SectSize;
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if (error(Section.getSize(SectSize)))
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break;
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// Make a list of all the symbols in this section.
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std::vector<std::pair<uint64_t, StringRef>> Symbols;
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for (const SymbolRef &Symbol : Obj->symbols()) {
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bool contains;
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if (!error(Section.containsSymbol(Symbol, contains)) && contains) {
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uint64_t Address;
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if (error(Symbol.getAddress(Address)))
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break;
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if (Address == UnknownAddressOrSize)
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continue;
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Address -= SectionAddr;
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if (Address >= SectSize)
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continue;
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StringRef Name;
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if (error(Symbol.getName(Name)))
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break;
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Symbols.push_back(std::make_pair(Address, Name));
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}
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}
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// Sort the symbols by address, just in case they didn't come in that way.
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array_pod_sort(Symbols.begin(), Symbols.end());
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// Make a list of all the relocations for this section.
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std::vector<RelocationRef> Rels;
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if (InlineRelocs) {
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for (const SectionRef &RelocSec : SectionRelocMap[Section]) {
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for (const RelocationRef &Reloc : RelocSec.relocations()) {
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Rels.push_back(Reloc);
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}
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}
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}
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// Sort relocations by address.
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std::sort(Rels.begin(), Rels.end(), RelocAddressLess);
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StringRef SegmentName = "";
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if (const MachOObjectFile *MachO = dyn_cast<const MachOObjectFile>(Obj)) {
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DataRefImpl DR = Section.getRawDataRefImpl();
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SegmentName = MachO->getSectionFinalSegmentName(DR);
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}
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StringRef name;
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if (error(Section.getName(name)))
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break;
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outs() << "Disassembly of section ";
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if (!SegmentName.empty())
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outs() << SegmentName << ",";
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outs() << name << ':';
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// If the section has no symbols just insert a dummy one and disassemble
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// the whole section.
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if (Symbols.empty())
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Symbols.push_back(std::make_pair(0, name));
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SmallString<40> Comments;
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raw_svector_ostream CommentStream(Comments);
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StringRef Bytes;
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if (error(Section.getContents(Bytes)))
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break;
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StringRefMemoryObject memoryObject(Bytes, SectionAddr);
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uint64_t Size;
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uint64_t Index;
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std::vector<RelocationRef>::const_iterator rel_cur = Rels.begin();
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|
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;
|
|
// 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();
|
|
#else
|
|
raw_ostream &DebugOut = nulls();
|
|
#endif
|
|
|
|
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() << CommentStream.str();
|
|
Comments.clear();
|
|
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 = false;
|
|
uint64_t addr;
|
|
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;
|
|
|
|
outs() << format(Fmt.data(), SectionAddr + addr) << name
|
|
<< "\t" << val << "\n";
|
|
|
|
skip_print_rel:
|
|
++rel_cur;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void PrintRelocations(const ObjectFile *Obj) {
|
|
StringRef Fmt = Obj->getBytesInAddress() > 4 ? "%016" PRIx64 :
|
|
"%08" PRIx64;
|
|
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() << format(Fmt.data(), 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) {
|
|
std::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.getAddress(BaseAddr)))
|
|
continue;
|
|
if (error(Section.isBSS(BSS)))
|
|
continue;
|
|
|
|
outs() << "Contents of section " << Name << ":\n";
|
|
if (BSS) {
|
|
uint64_t Size;
|
|
if (error(Section.getSize(Size)))
|
|
continue;
|
|
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) {
|
|
const coff_file_header *header;
|
|
if (error(coff->getHeader(header)))
|
|
return;
|
|
|
|
for (unsigned SI = 0, SE = header->NumberOfSymbols; SI != SE; ++SI) {
|
|
const coff_symbol *Symbol;
|
|
StringRef Name;
|
|
if (error(coff->getSymbol(SI, Symbol)))
|
|
return;
|
|
|
|
if (error(coff->getSymbolName(Symbol, Name)))
|
|
return;
|
|
|
|
outs() << "[" << format("%2d", SI) << "]"
|
|
<< "(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";
|
|
|
|
for (unsigned AI = 0, AE = Symbol->NumberOfAuxSymbols; 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;
|
|
|
|
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 if (Symbol->isFileRecord()) {
|
|
const coff_aux_file *AF;
|
|
if (error(coff->getAuxSymbol<coff_aux_file>(SI + 1, AF)))
|
|
return;
|
|
|
|
StringRef Name(AF->FileName,
|
|
Symbol->NumberOfAuxSymbols * COFF::SymbolSize);
|
|
outs() << "AUX " << Name.rtrim(StringRef("\0", 1)) << '\n';
|
|
|
|
SI = SI + Symbol->NumberOfAuxSymbols;
|
|
break;
|
|
} else {
|
|
outs() << "AUX Unknown\n";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
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) {
|
|
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)
|
|
errs() << ToolName << ": '" << a->getFileName() << "': " << EC.message()
|
|
<< ".\n";
|
|
continue;
|
|
}
|
|
if (ObjectFile *o = dyn_cast<ObjectFile>(&*ChildOrErr.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 (std::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();
|
|
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) {
|
|
cl::PrintHelpMessage();
|
|
return 2;
|
|
}
|
|
|
|
std::for_each(InputFilenames.begin(), InputFilenames.end(),
|
|
DumpInput);
|
|
|
|
return 0;
|
|
}
|