1 //===-- llvm-nm.cpp - Symbol table dumping utility for llvm ---------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This program is a utility that works like traditional Unix "nm", that is, it
11 // prints out the names of symbols in a bitcode or object file, along with some
12 // information about each symbol.
14 // This "nm" supports many of the features of GNU "nm", including its different
17 //===----------------------------------------------------------------------===//
19 #include "llvm/IR/Function.h"
20 #include "llvm/IR/GlobalAlias.h"
21 #include "llvm/IR/GlobalVariable.h"
22 #include "llvm/IR/LLVMContext.h"
23 #include "llvm/Object/Archive.h"
24 #include "llvm/Object/COFF.h"
25 #include "llvm/Object/ELFObjectFile.h"
26 #include "llvm/Object/IRObjectFile.h"
27 #include "llvm/Object/MachO.h"
28 #include "llvm/Object/MachOUniversal.h"
29 #include "llvm/Object/ObjectFile.h"
30 #include "llvm/Support/COFF.h"
31 #include "llvm/Support/CommandLine.h"
32 #include "llvm/Support/FileSystem.h"
33 #include "llvm/Support/Format.h"
34 #include "llvm/Support/ManagedStatic.h"
35 #include "llvm/Support/MemoryBuffer.h"
36 #include "llvm/Support/PrettyStackTrace.h"
37 #include "llvm/Support/Program.h"
38 #include "llvm/Support/Signals.h"
39 #include "llvm/Support/raw_ostream.h"
44 #include <system_error>
47 using namespace object;
48 using std::error_code;
51 enum OutputFormatTy { bsd, sysv, posix, darwin };
52 cl::opt<OutputFormatTy> OutputFormat(
53 "format", cl::desc("Specify output format"),
54 cl::values(clEnumVal(bsd, "BSD format"), clEnumVal(sysv, "System V format"),
55 clEnumVal(posix, "POSIX.2 format"),
56 clEnumVal(darwin, "Darwin -m format"), clEnumValEnd),
58 cl::alias OutputFormat2("f", cl::desc("Alias for --format"),
59 cl::aliasopt(OutputFormat));
61 cl::list<std::string> InputFilenames(cl::Positional, cl::desc("<input files>"),
64 cl::opt<bool> UndefinedOnly("undefined-only",
65 cl::desc("Show only undefined symbols"));
66 cl::alias UndefinedOnly2("u", cl::desc("Alias for --undefined-only"),
67 cl::aliasopt(UndefinedOnly));
69 cl::opt<bool> DynamicSyms("dynamic",
70 cl::desc("Display the dynamic symbols instead "
71 "of normal symbols."));
72 cl::alias DynamicSyms2("D", cl::desc("Alias for --dynamic"),
73 cl::aliasopt(DynamicSyms));
75 cl::opt<bool> DefinedOnly("defined-only",
76 cl::desc("Show only defined symbols"));
78 cl::opt<bool> ExternalOnly("extern-only",
79 cl::desc("Show only external symbols"));
80 cl::alias ExternalOnly2("g", cl::desc("Alias for --extern-only"),
81 cl::aliasopt(ExternalOnly));
83 cl::opt<bool> BSDFormat("B", cl::desc("Alias for --format=bsd"));
84 cl::opt<bool> POSIXFormat("P", cl::desc("Alias for --format=posix"));
86 cl::opt<bool> PrintFileName(
88 cl::desc("Precede each symbol with the object file it came from"));
90 cl::alias PrintFileNameA("A", cl::desc("Alias for --print-file-name"),
91 cl::aliasopt(PrintFileName));
92 cl::alias PrintFileNameo("o", cl::desc("Alias for --print-file-name"),
93 cl::aliasopt(PrintFileName));
95 cl::opt<bool> DebugSyms("debug-syms",
96 cl::desc("Show all symbols, even debugger only"));
97 cl::alias DebugSymsa("a", cl::desc("Alias for --debug-syms"),
98 cl::aliasopt(DebugSyms));
100 cl::opt<bool> NumericSort("numeric-sort", cl::desc("Sort symbols by address"));
101 cl::alias NumericSortn("n", cl::desc("Alias for --numeric-sort"),
102 cl::aliasopt(NumericSort));
103 cl::alias NumericSortv("v", cl::desc("Alias for --numeric-sort"),
104 cl::aliasopt(NumericSort));
106 cl::opt<bool> NoSort("no-sort", cl::desc("Show symbols in order encountered"));
107 cl::alias NoSortp("p", cl::desc("Alias for --no-sort"), cl::aliasopt(NoSort));
109 cl::opt<bool> PrintSize("print-size",
110 cl::desc("Show symbol size instead of address"));
111 cl::alias PrintSizeS("S", cl::desc("Alias for --print-size"),
112 cl::aliasopt(PrintSize));
114 cl::opt<bool> SizeSort("size-sort", cl::desc("Sort symbols by size"));
116 cl::opt<bool> WithoutAliases("without-aliases", cl::Hidden,
117 cl::desc("Exclude aliases from output"));
119 cl::opt<bool> ArchiveMap("print-armap", cl::desc("Print the archive map"));
120 cl::alias ArchiveMaps("s", cl::desc("Alias for --print-armap"),
121 cl::aliasopt(ArchiveMap));
122 bool PrintAddress = true;
124 bool MultipleFiles = false;
126 bool HadError = false;
128 std::string ToolName;
131 static void error(Twine Message, Twine Path = Twine()) {
133 errs() << ToolName << ": " << Path << ": " << Message << ".\n";
136 static bool error(error_code EC, Twine Path = Twine()) {
138 error(EC.message(), Path);
154 static bool compareSymbolAddress(const NMSymbol &A, const NMSymbol &B) {
155 if (A.Address < B.Address)
157 else if (A.Address == B.Address && A.Name < B.Name)
159 else if (A.Address == B.Address && A.Name == B.Name && A.Size < B.Size)
165 static bool compareSymbolSize(const NMSymbol &A, const NMSymbol &B) {
168 else if (A.Size == B.Size && A.Name < B.Name)
170 else if (A.Size == B.Size && A.Name == B.Name && A.Address < B.Address)
176 static bool compareSymbolName(const NMSymbol &A, const NMSymbol &B) {
179 else if (A.Name == B.Name && A.Size < B.Size)
181 else if (A.Name == B.Name && A.Size == B.Size && A.Address < B.Address)
187 static char isSymbolList64Bit(SymbolicFile *Obj) {
188 if (isa<IRObjectFile>(Obj))
190 else if (isa<COFFObjectFile>(Obj))
192 else if (MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(Obj))
193 return MachO->is64Bit();
194 else if (isa<ELF32LEObjectFile>(Obj))
196 else if (isa<ELF64LEObjectFile>(Obj))
198 else if (isa<ELF32BEObjectFile>(Obj))
200 else if(isa<ELF64BEObjectFile>(Obj))
206 static StringRef CurrentFilename;
207 typedef std::vector<NMSymbol> SymbolListT;
208 static SymbolListT SymbolList;
210 // darwinPrintSymbol() is used to print a symbol from a Mach-O file when the
211 // the OutputFormat is darwin. It produces the same output as darwin's nm(1) -m
213 static void darwinPrintSymbol(MachOObjectFile *MachO, SymbolListT::iterator I,
214 char *SymbolAddrStr, const char *printBlanks) {
215 MachO::mach_header H;
216 MachO::mach_header_64 H_64;
217 uint32_t Filetype, Flags;
218 MachO::nlist_64 STE_64;
223 if (MachO->is64Bit()) {
224 H_64 = MachO->MachOObjectFile::getHeader64();
225 Filetype = H_64.filetype;
227 STE_64 = MachO->getSymbol64TableEntry(I->Symb);
228 NType = STE_64.n_type;
229 NDesc = STE_64.n_desc;
230 NValue = STE_64.n_value;
232 H = MachO->MachOObjectFile::getHeader();
233 Filetype = H.filetype;
235 STE = MachO->getSymbolTableEntry(I->Symb);
238 NValue = STE.n_value;
242 if ((NType & MachO::N_TYPE) == MachO::N_INDR)
243 strcpy(SymbolAddrStr, printBlanks);
244 outs() << SymbolAddrStr << ' ';
247 switch (NType & MachO::N_TYPE) {
250 outs() << "(common) ";
251 if (MachO::GET_COMM_ALIGN(NDesc) != 0)
252 outs() << "(alignment 2^" <<
253 (int)MachO::GET_COMM_ALIGN(NDesc) << ") ";
255 if ((NType & MachO::N_TYPE) == MachO::N_PBUD)
256 outs() << "(prebound ";
259 if ((NDesc & MachO::REFERENCE_TYPE) ==
260 MachO::REFERENCE_FLAG_UNDEFINED_LAZY)
261 outs() << "undefined [lazy bound]) ";
262 else if ((NDesc & MachO::REFERENCE_TYPE) ==
263 MachO::REFERENCE_FLAG_UNDEFINED_LAZY)
264 outs() << "undefined [private lazy bound]) ";
265 else if ((NDesc & MachO::REFERENCE_TYPE) ==
266 MachO::REFERENCE_FLAG_PRIVATE_UNDEFINED_NON_LAZY)
267 outs() << "undefined [private]) ";
269 outs() << "undefined) ";
273 outs() << "(absolute) ";
276 outs() << "(indirect) ";
278 case MachO::N_SECT: {
279 section_iterator Sec = MachO->section_end();
280 MachO->getSymbolSection(I->Symb, Sec);
281 DataRefImpl Ref = Sec->getRawDataRefImpl();
282 StringRef SectionName;
283 MachO->getSectionName(Ref, SectionName);
284 StringRef SegmentName = MachO->getSectionFinalSegmentName(Ref);
285 outs() << "(" << SegmentName << "," << SectionName << ") ";
293 if (NType & MachO::N_EXT) {
294 if (NDesc & MachO::REFERENCED_DYNAMICALLY)
295 outs() << "[referenced dynamically] ";
296 if (NType & MachO::N_PEXT) {
297 if ((NDesc & MachO::N_WEAK_DEF) == MachO::N_WEAK_DEF)
298 outs() << "weak private external ";
300 outs() << "private external ";
302 if ((NDesc & MachO::N_WEAK_REF) == MachO::N_WEAK_REF ||
303 (NDesc & MachO::N_WEAK_DEF) == MachO::N_WEAK_DEF){
304 if ((NDesc & (MachO::N_WEAK_REF | MachO::N_WEAK_DEF)) ==
305 (MachO::N_WEAK_REF | MachO::N_WEAK_DEF))
306 outs() << "weak external automatically hidden ";
308 outs() << "weak external ";
311 outs() << "external ";
314 if (NType & MachO::N_PEXT)
315 outs() << "non-external (was a private external) ";
317 outs() << "non-external ";
320 if (Filetype == MachO::MH_OBJECT &&
321 (NDesc & MachO::N_NO_DEAD_STRIP) == MachO::N_NO_DEAD_STRIP)
322 outs() << "[no dead strip] ";
324 if (Filetype == MachO::MH_OBJECT &&
325 ((NType & MachO::N_TYPE) != MachO::N_UNDF) &&
326 (NDesc & MachO::N_SYMBOL_RESOLVER) == MachO::N_SYMBOL_RESOLVER)
327 outs() << "[symbol resolver] ";
329 if (Filetype == MachO::MH_OBJECT &&
330 ((NType & MachO::N_TYPE) != MachO::N_UNDF) &&
331 (NDesc & MachO::N_ALT_ENTRY) == MachO::N_ALT_ENTRY)
332 outs() << "[alt entry] ";
334 if ((NDesc & MachO::N_ARM_THUMB_DEF) == MachO::N_ARM_THUMB_DEF)
335 outs() << "[Thumb] ";
337 if ((NType & MachO::N_TYPE) == MachO::N_INDR) {
338 outs() << I->Name << " (for ";
339 StringRef IndirectName;
340 if (MachO->getIndirectName(I->Symb, IndirectName))
343 outs() << IndirectName << ")";
348 if ((Flags & MachO::MH_TWOLEVEL) == MachO::MH_TWOLEVEL &&
349 (((NType & MachO::N_TYPE) == MachO::N_UNDF &&
351 (NType & MachO::N_TYPE) == MachO::N_PBUD)) {
352 uint32_t LibraryOrdinal = MachO::GET_LIBRARY_ORDINAL(NDesc);
353 if (LibraryOrdinal != 0) {
354 if (LibraryOrdinal == MachO::EXECUTABLE_ORDINAL)
355 outs() << " (from executable)";
356 else if (LibraryOrdinal == MachO::DYNAMIC_LOOKUP_ORDINAL)
357 outs() << " (dynamically looked up)";
359 StringRef LibraryName;
360 if (MachO->getLibraryShortNameByIndex(LibraryOrdinal - 1,
362 outs() << " (from bad library ordinal " <<
363 LibraryOrdinal << ")";
365 outs() << " (from " << LibraryName << ")";
373 static void sortAndPrintSymbolList(SymbolicFile *Obj) {
376 std::sort(SymbolList.begin(), SymbolList.end(), compareSymbolAddress);
378 std::sort(SymbolList.begin(), SymbolList.end(), compareSymbolSize);
380 std::sort(SymbolList.begin(), SymbolList.end(), compareSymbolName);
383 if (OutputFormat == posix && MultipleFiles) {
384 outs() << '\n' << CurrentFilename << ":\n";
385 } else if (OutputFormat == bsd && MultipleFiles) {
386 outs() << "\n" << CurrentFilename << ":\n";
387 } else if (OutputFormat == sysv) {
388 outs() << "\n\nSymbols from " << CurrentFilename << ":\n\n"
389 << "Name Value Class Type"
390 << " Size Line Section\n";
393 const char *printBlanks, *printFormat;
394 if (isSymbolList64Bit(Obj)) {
396 printFormat = "%016" PRIx64;
399 printFormat = "%08" PRIx64;
402 for (SymbolListT::iterator I = SymbolList.begin(), E = SymbolList.end();
404 if ((I->TypeChar != 'U') && UndefinedOnly)
406 if ((I->TypeChar == 'U') && DefinedOnly)
408 if (SizeSort && !PrintAddress && I->Size == UnknownAddressOrSize)
411 char SymbolAddrStr[18] = "";
412 char SymbolSizeStr[18] = "";
414 if (OutputFormat == sysv || I->Address == UnknownAddressOrSize)
415 strcpy(SymbolAddrStr, printBlanks);
416 if (OutputFormat == sysv)
417 strcpy(SymbolSizeStr, printBlanks);
419 if (I->Address != UnknownAddressOrSize)
420 format(printFormat, I->Address)
421 .print(SymbolAddrStr, sizeof(SymbolAddrStr));
422 if (I->Size != UnknownAddressOrSize)
423 format(printFormat, I->Size).print(SymbolSizeStr, sizeof(SymbolSizeStr));
425 // If OutputFormat is darwin and we have a MachOObjectFile print as darwin's
426 // nm(1) -m output, else if OutputFormat is darwin and not a Mach-O object
427 // fall back to OutputFormat bsd (see below).
428 MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(Obj);
429 if (OutputFormat == darwin && MachO) {
430 darwinPrintSymbol(MachO, I, SymbolAddrStr, printBlanks);
431 } else if (OutputFormat == posix) {
432 outs() << I->Name << " " << I->TypeChar << " " << SymbolAddrStr
433 << SymbolSizeStr << "\n";
434 } else if (OutputFormat == bsd || (OutputFormat == darwin && !MachO)) {
436 outs() << SymbolAddrStr << ' ';
438 outs() << SymbolSizeStr;
439 if (I->Size != UnknownAddressOrSize)
442 outs() << I->TypeChar << " " << I->Name << "\n";
443 } else if (OutputFormat == sysv) {
444 std::string PaddedName(I->Name);
445 while (PaddedName.length() < 20)
447 outs() << PaddedName << "|" << SymbolAddrStr << "| " << I->TypeChar
448 << " | |" << SymbolSizeStr << "| |\n";
455 template <class ELFT>
456 static char getSymbolNMTypeChar(ELFObjectFile<ELFT> &Obj,
457 basic_symbol_iterator I) {
458 typedef typename ELFObjectFile<ELFT>::Elf_Sym Elf_Sym;
459 typedef typename ELFObjectFile<ELFT>::Elf_Shdr Elf_Shdr;
462 symbol_iterator SymI(I);
464 DataRefImpl Symb = I->getRawDataRefImpl();
465 const Elf_Sym *ESym = Obj.getSymbol(Symb);
466 const ELFFile<ELFT> &EF = *Obj.getELFFile();
467 const Elf_Shdr *ESec = EF.getSection(ESym);
470 switch (ESec->sh_type) {
471 case ELF::SHT_PROGBITS:
472 case ELF::SHT_DYNAMIC:
473 switch (ESec->sh_flags) {
474 case(ELF::SHF_ALLOC | ELF::SHF_EXECINSTR) :
476 case(ELF::SHF_TLS | ELF::SHF_ALLOC | ELF::SHF_WRITE) :
477 case(ELF::SHF_ALLOC | ELF::SHF_WRITE) :
480 case(ELF::SHF_ALLOC | ELF::SHF_MERGE) :
481 case(ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS) :
485 case ELF::SHT_NOBITS:
490 if (ESym->getType() == ELF::STT_SECTION) {
492 if (error(SymI->getName(Name)))
494 return StringSwitch<char>(Name)
495 .StartsWith(".debug", 'N')
496 .StartsWith(".note", 'n')
503 static char getSymbolNMTypeChar(COFFObjectFile &Obj, symbol_iterator I) {
504 const coff_symbol *Symb = Obj.getCOFFSymbol(*I);
506 symbol_iterator SymI(I);
509 if (error(SymI->getName(Name)))
512 char Ret = StringSwitch<char>(Name)
513 .StartsWith(".debug", 'N')
514 .StartsWith(".sxdata", 'N')
520 uint32_t Characteristics = 0;
521 if (!COFF::isReservedSectionNumber(Symb->SectionNumber)) {
522 section_iterator SecI = Obj.section_end();
523 if (error(SymI->getSection(SecI)))
525 const coff_section *Section = Obj.getCOFFSection(*SecI);
526 Characteristics = Section->Characteristics;
529 switch (Symb->SectionNumber) {
530 case COFF::IMAGE_SYM_DEBUG:
533 // Check section type.
534 if (Characteristics & COFF::IMAGE_SCN_CNT_CODE)
536 else if (Characteristics & COFF::IMAGE_SCN_MEM_READ &&
537 ~Characteristics & COFF::IMAGE_SCN_MEM_WRITE) // Read only.
539 else if (Characteristics & COFF::IMAGE_SCN_CNT_INITIALIZED_DATA)
541 else if (Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA)
543 else if (Characteristics & COFF::IMAGE_SCN_LNK_INFO)
546 // Check for section symbol.
547 else if (Symb->isSectionDefinition())
554 static uint8_t getNType(MachOObjectFile &Obj, DataRefImpl Symb) {
556 MachO::nlist_64 STE = Obj.getSymbol64TableEntry(Symb);
559 MachO::nlist STE = Obj.getSymbolTableEntry(Symb);
563 static char getSymbolNMTypeChar(MachOObjectFile &Obj, basic_symbol_iterator I) {
564 DataRefImpl Symb = I->getRawDataRefImpl();
565 uint8_t NType = getNType(Obj, Symb);
567 switch (NType & MachO::N_TYPE) {
572 case MachO::N_SECT: {
573 section_iterator Sec = Obj.section_end();
574 Obj.getSymbolSection(Symb, Sec);
575 DataRefImpl Ref = Sec->getRawDataRefImpl();
576 StringRef SectionName;
577 Obj.getSectionName(Ref, SectionName);
578 StringRef SegmentName = Obj.getSectionFinalSegmentName(Ref);
579 if (SegmentName == "__TEXT" && SectionName == "__text")
589 static char getSymbolNMTypeChar(const GlobalValue &GV) {
590 if (GV.getType()->getElementType()->isFunctionTy())
592 // FIXME: should we print 'b'? At the IR level we cannot be sure if this
593 // will be in bss or not, but we could approximate.
597 static char getSymbolNMTypeChar(IRObjectFile &Obj, basic_symbol_iterator I) {
598 const GlobalValue &GV = Obj.getSymbolGV(I->getRawDataRefImpl());
599 return getSymbolNMTypeChar(GV);
602 template <class ELFT>
603 static bool isObject(ELFObjectFile<ELFT> &Obj, symbol_iterator I) {
604 typedef typename ELFObjectFile<ELFT>::Elf_Sym Elf_Sym;
606 DataRefImpl Symb = I->getRawDataRefImpl();
607 const Elf_Sym *ESym = Obj.getSymbol(Symb);
609 return ESym->getType() == ELF::STT_OBJECT;
612 static bool isObject(SymbolicFile *Obj, basic_symbol_iterator I) {
613 if (ELF32LEObjectFile *ELF = dyn_cast<ELF32LEObjectFile>(Obj))
614 return isObject(*ELF, I);
615 if (ELF64LEObjectFile *ELF = dyn_cast<ELF64LEObjectFile>(Obj))
616 return isObject(*ELF, I);
617 if (ELF32BEObjectFile *ELF = dyn_cast<ELF32BEObjectFile>(Obj))
618 return isObject(*ELF, I);
619 if (ELF64BEObjectFile *ELF = dyn_cast<ELF64BEObjectFile>(Obj))
620 return isObject(*ELF, I);
624 static char getNMTypeChar(SymbolicFile *Obj, basic_symbol_iterator I) {
625 uint32_t Symflags = I->getFlags();
626 if ((Symflags & object::SymbolRef::SF_Weak) && !isa<MachOObjectFile>(Obj)) {
627 char Ret = isObject(Obj, I) ? 'v' : 'w';
628 if (!(Symflags & object::SymbolRef::SF_Undefined))
633 if (Symflags & object::SymbolRef::SF_Undefined)
636 if (Symflags & object::SymbolRef::SF_Common)
640 if (Symflags & object::SymbolRef::SF_Absolute)
642 else if (IRObjectFile *IR = dyn_cast<IRObjectFile>(Obj))
643 Ret = getSymbolNMTypeChar(*IR, I);
644 else if (COFFObjectFile *COFF = dyn_cast<COFFObjectFile>(Obj))
645 Ret = getSymbolNMTypeChar(*COFF, I);
646 else if (MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(Obj))
647 Ret = getSymbolNMTypeChar(*MachO, I);
648 else if (ELF32LEObjectFile *ELF = dyn_cast<ELF32LEObjectFile>(Obj))
649 Ret = getSymbolNMTypeChar(*ELF, I);
650 else if (ELF64LEObjectFile *ELF = dyn_cast<ELF64LEObjectFile>(Obj))
651 Ret = getSymbolNMTypeChar(*ELF, I);
652 else if (ELF32BEObjectFile *ELF = dyn_cast<ELF32BEObjectFile>(Obj))
653 Ret = getSymbolNMTypeChar(*ELF, I);
655 Ret = getSymbolNMTypeChar(*cast<ELF64BEObjectFile>(Obj), I);
657 if (Symflags & object::SymbolRef::SF_Global)
663 static void dumpSymbolNamesFromObject(SymbolicFile *Obj) {
664 basic_symbol_iterator IBegin = Obj->symbol_begin();
665 basic_symbol_iterator IEnd = Obj->symbol_end();
668 error("File format has no dynamic symbol table", Obj->getFileName());
671 std::pair<symbol_iterator, symbol_iterator> IDyn =
672 getELFDynamicSymbolIterators(Obj);
676 std::string NameBuffer;
677 raw_string_ostream OS(NameBuffer);
678 for (basic_symbol_iterator I = IBegin; I != IEnd; ++I) {
679 uint32_t SymFlags = I->getFlags();
680 if (!DebugSyms && (SymFlags & SymbolRef::SF_FormatSpecific))
682 if (WithoutAliases) {
683 if (IRObjectFile *IR = dyn_cast<IRObjectFile>(Obj)) {
684 const GlobalValue &GV = IR->getSymbolGV(I->getRawDataRefImpl());
685 if(isa<GlobalAlias>(GV))
690 S.Size = UnknownAddressOrSize;
691 S.Address = UnknownAddressOrSize;
692 if ((PrintSize || SizeSort) && isa<ObjectFile>(Obj)) {
693 symbol_iterator SymI = I;
694 if (error(SymI->getSize(S.Size)))
697 if (PrintAddress && isa<ObjectFile>(Obj))
698 if (error(symbol_iterator(I)->getAddress(S.Address)))
700 S.TypeChar = getNMTypeChar(Obj, I);
701 if (error(I->printName(OS)))
704 S.Symb = I->getRawDataRefImpl();
705 SymbolList.push_back(S);
709 const char *P = NameBuffer.c_str();
710 for (unsigned I = 0; I < SymbolList.size(); ++I) {
711 SymbolList[I].Name = P;
715 CurrentFilename = Obj->getFileName();
716 sortAndPrintSymbolList(Obj);
719 static void dumpSymbolNamesFromFile(std::string &Filename) {
720 std::unique_ptr<MemoryBuffer> Buffer;
721 if (error(MemoryBuffer::getFileOrSTDIN(Filename, Buffer), Filename))
724 LLVMContext &Context = getGlobalContext();
725 ErrorOr<Binary *> BinaryOrErr = createBinary(Buffer.release(), &Context);
726 if (error(BinaryOrErr.getError(), Filename))
728 std::unique_ptr<Binary> Bin(BinaryOrErr.get());
730 if (Archive *A = dyn_cast<Archive>(Bin.get())) {
732 Archive::symbol_iterator I = A->symbol_begin();
733 Archive::symbol_iterator E = A->symbol_end();
735 outs() << "Archive map\n";
736 for (; I != E; ++I) {
737 Archive::child_iterator C;
740 if (error(I->getMember(C)))
742 if (error(I->getName(SymName)))
744 if (error(C->getName(FileName)))
746 outs() << SymName << " in " << FileName << "\n";
752 for (Archive::child_iterator I = A->child_begin(), E = A->child_end();
754 std::unique_ptr<Binary> Child;
755 if (I->getAsBinary(Child, &Context))
757 if (SymbolicFile *O = dyn_cast<SymbolicFile>(Child.get())) {
758 outs() << O->getFileName() << ":\n";
759 dumpSymbolNamesFromObject(O);
764 if (MachOUniversalBinary *UB = dyn_cast<MachOUniversalBinary>(Bin.get())) {
765 for (MachOUniversalBinary::object_iterator I = UB->begin_objects(),
766 E = UB->end_objects();
768 std::unique_ptr<ObjectFile> Obj;
769 std::unique_ptr<Archive> A;
770 if (!I->getAsObjectFile(Obj)) {
771 outs() << Obj->getFileName() << ":\n";
772 dumpSymbolNamesFromObject(Obj.get());
774 else if (!I->getAsArchive(A)) {
775 for (Archive::child_iterator AI = A->child_begin(), AE = A->child_end();
777 std::unique_ptr<Binary> Child;
778 if (AI->getAsBinary(Child, &Context))
780 if (SymbolicFile *O = dyn_cast<SymbolicFile>(Child.get())) {
781 outs() << A->getFileName() << ":";
782 outs() << O->getFileName() << ":\n";
783 dumpSymbolNamesFromObject(O);
790 if (SymbolicFile *O = dyn_cast<SymbolicFile>(Bin.get())) {
791 dumpSymbolNamesFromObject(O);
794 error("unrecognizable file type", Filename);
798 int main(int argc, char **argv) {
799 // Print a stack trace if we signal out.
800 sys::PrintStackTraceOnErrorSignal();
801 PrettyStackTraceProgram X(argc, argv);
803 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
804 cl::ParseCommandLineOptions(argc, argv, "llvm symbol table dumper\n");
806 // llvm-nm only reads binary files.
807 if (error(sys::ChangeStdinToBinary()))
814 OutputFormat = posix;
816 // The relative order of these is important. If you pass --size-sort it should
817 // only print out the size. However, if you pass -S --size-sort, it should
818 // print out both the size and address.
819 if (SizeSort && !PrintSize)
820 PrintAddress = false;
821 if (OutputFormat == sysv || SizeSort)
824 switch (InputFilenames.size()) {
826 InputFilenames.push_back("-");
830 MultipleFiles = true;
833 std::for_each(InputFilenames.begin(), InputFilenames.end(),
834 dumpSymbolNamesFromFile);