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llvm-6502/tools/llvm-objdump/llvm-objdump.cpp
Akira Hatanaka f09378397e [MCInstPrinter] Enable MCInstPrinter to change its behavior based on the 
per-function subtarget.

Currently, code-gen passes the default or generic subtarget to the constructors
of MCInstPrinter subclasses (see LLVMTargetMachine::addPassesToEmitFile), which
enables some targets (AArch64, ARM, and X86) to change their instprinter's
behavior based on the subtarget feature bits. Since the backend can now use
different subtargets for each function, instprinter has to be changed to use the
per-function subtarget rather than the default subtarget.

This patch takes the first step towards enabling instprinter to change its
behavior based on the per-function subtarget. It adds a bit "PassSubtarget" to
AsmWriter which tells table-gen to pass a reference to MCSubtargetInfo to the
various print methods table-gen auto-generates. 

I will follow up with changes to instprinters of AArch64, ARM, and X86.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233411 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-27 20:36:02 +00:00

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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/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Triple.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/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/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"));
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));
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 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;
}
void llvm::DumpBytes(ArrayRef<uint8_t> bytes) {
static const char hex_rep[] = "0123456789abcdef";
SmallString<64> output;
for (char i: bytes) {
output.push_back(hex_rep[(i & 0xF0) >> 4]);
output.push_back(hex_rep[i & 0xF]);
output.push_back(' ');
}
outs() << output.c_str();
}
bool llvm::RelocAddressLess(RelocationRef a, RelocationRef b) {
uint64_t a_addr, b_addr;
if (error(a.getOffset(a_addr))) return false;
if (error(b.getOffset(b_addr))) return false;
return a_addr < b_addr;
}
static 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(
AsmPrinterVariant, *AsmInfo, *MII, *MRI, *STI));
if (!IP) {
errs() << "error: no instruction printer for target " << TripleName
<< '\n';
return;
}
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);
}
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)) {
uint64_t Address;
if (error(Symbol.getAddress(Address)))
break;
if (Address == UnknownAddressOrSize)
continue;
Address -= SectionAddr;
if (Address >= SectSize)
continue;
StringRef Name;
if (error(Symbol.getName(Name)))
break;
Symbols.push_back(std::make_pair(Address, Name));
}
}
// 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 symbols just insert a dummy one and disassemble
// the whole section.
if (Symbols.empty())
Symbols.push_back(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)) {
outs() << format("%8" PRIx64 ":", SectionAddr + Index);
if (!NoShowRawInsn) {
outs() << "\t";
DumpBytes(ArrayRef<uint8_t>(Bytes.data() + Index, Size));
}
IP->printInst(&Inst, outs(), "", *STI);
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;
}
}
}
}
}
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;
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";
}
}
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()) {
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;
bool Common = Flags & SymbolRef::SF_Common;
if (Common) {
uint32_t Alignment;
if (error(Symbol.getAlignment(Alignment)))
Alignment = 0;
Address = Size;
Size = Alignment;
}
if (Address == UnknownAddressOrSize)
Address = 0;
if (Size == UnknownAddressOrSize)
Size = 0;
char GlobLoc = ' ';
if (Type != SymbolRef::ST_Unknown)
GlobLoc = Global ? 'g' : 'l';
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'
<< 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 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;
}
}
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) {
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);
}
/// @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 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()) {
errs() << ToolName << ": '" << file << "': " << EC.message() << ".\n";
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
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
&& !ExportsTrie
&& !Rebase
&& !Bind
&& !LazyBind
&& !WeakBind
&& !(UniversalHeaders && MachOOpt)
&& !(ArchiveHeaders && MachOOpt)
&& !(IndirectSymbols && MachOOpt)
&& !(DataInCode && MachOOpt)
&& !(LinkOptHints && MachOOpt)
&& !(InfoPlist && MachOOpt)
&& !(DylibsUsed && MachOOpt)
&& !(DylibId && MachOOpt)
&& !(DumpSections.size() != 0 && MachOOpt)) {
cl::PrintHelpMessage();
return 2;
}
std::for_each(InputFilenames.begin(), InputFilenames.end(),
DumpInput);
return ReturnValue;
}
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