//
//===----------------------------------------------------------------------===//
//
-// This program is a utility that works like traditional Unix "nm",
-// that is, it prints out the names of symbols in a bitcode file,
-// along with some information about each symbol.
+// This program is a utility that works like traditional Unix "nm", that is, it
+// prints out the names of symbols in a bitcode or object file, along with some
+// information about each symbol.
//
-// This "nm" does not print symbols' addresses. It supports many of
-// the features of GNU "nm", including its different output formats.
+// This "nm" supports many of the features of GNU "nm", including its different
+// output formats.
//
//===----------------------------------------------------------------------===//
-#include "llvm/LLVMContext.h"
-#include "llvm/Module.h"
-#include "llvm/Bitcode/ReaderWriter.h"
-#include "llvm/Bitcode/Archive.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/GlobalAlias.h"
+#include "llvm/IR/GlobalVariable.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/Object/Archive.h"
+#include "llvm/Object/COFF.h"
+#include "llvm/Object/ELFObjectFile.h"
+#include "llvm/Object/IRObjectFile.h"
+#include "llvm/Object/MachO.h"
+#include "llvm/Object/MachOUniversal.h"
+#include "llvm/Object/ObjectFile.h"
+#include "llvm/Support/COFF.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Format.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/Program.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cctype>
#include <cerrno>
#include <cstring>
-#include <iostream>
+#include <system_error>
+#include <vector>
using namespace llvm;
+using namespace object;
namespace {
- enum OutputFormatTy { bsd, sysv, posix };
- cl::opt<OutputFormatTy>
- OutputFormat("format",
- cl::desc("Specify output format"),
- cl::values(clEnumVal(bsd, "BSD format"),
- clEnumVal(sysv, "System V format"),
- clEnumVal(posix, "POSIX.2 format"),
- clEnumValEnd), cl::init(bsd));
- cl::alias OutputFormat2("f", cl::desc("Alias for --format"),
- cl::aliasopt(OutputFormat));
-
- cl::list<std::string>
- InputFilenames(cl::Positional, cl::desc("<input bitcode files>"),
- cl::ZeroOrMore);
-
- cl::opt<bool> UndefinedOnly("undefined-only",
- cl::desc("Show only undefined symbols"));
- cl::alias UndefinedOnly2("u", cl::desc("Alias for --undefined-only"),
- cl::aliasopt(UndefinedOnly));
-
- cl::opt<bool> DefinedOnly("defined-only",
- cl::desc("Show only defined symbols"));
-
- cl::opt<bool> ExternalOnly("extern-only",
- cl::desc("Show only external symbols"));
- cl::alias ExternalOnly2("g", cl::desc("Alias for --extern-only"),
- cl::aliasopt(ExternalOnly));
-
- cl::opt<bool> BSDFormat("B", cl::desc("Alias for --format=bsd"));
- cl::opt<bool> POSIXFormat("P", cl::desc("Alias for --format=posix"));
-
- bool MultipleFiles = false;
-
- std::string ToolName;
-}
-
-static char TypeCharForSymbol(GlobalValue &GV) {
- if (GV.isDeclaration()) return 'U';
- if (GV.hasLinkOnceLinkage()) return 'C';
- if (GV.hasCommonLinkage()) return 'C';
- if (GV.hasWeakLinkage()) return 'W';
- if (isa<Function>(GV) && GV.hasInternalLinkage()) return 't';
- if (isa<Function>(GV)) return 'T';
- if (isa<GlobalVariable>(GV) && GV.hasInternalLinkage()) return 'd';
- if (isa<GlobalVariable>(GV)) return 'D';
- if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(&GV)) {
- const GlobalValue *AliasedGV = GA->getAliasedGlobal();
- if (isa<Function>(AliasedGV)) return 'T';
- if (isa<GlobalVariable>(AliasedGV)) return 'D';
- }
- return '?';
-}
-
-static void DumpSymbolNameForGlobalValue(GlobalValue &GV) {
- // Private linkage and available_externally linkage don't exist in symtab.
- if (GV.hasPrivateLinkage() || GV.hasAvailableExternallyLinkage()) return;
-
- const std::string SymbolAddrStr = " "; // Not used yet...
- char TypeChar = TypeCharForSymbol(GV);
- if ((TypeChar != 'U') && UndefinedOnly)
- return;
- if ((TypeChar == 'U') && DefinedOnly)
- return;
- if (GV.hasLocalLinkage () && ExternalOnly)
- return;
- if (OutputFormat == posix) {
- std::cout << GV.getName () << " " << TypeCharForSymbol(GV) << " "
- << SymbolAddrStr << "\n";
- } else if (OutputFormat == bsd) {
- std::cout << SymbolAddrStr << " " << TypeCharForSymbol(GV) << " "
- << GV.getName () << "\n";
- } else if (OutputFormat == sysv) {
- std::string PaddedName (GV.getName ());
- while (PaddedName.length () < 20)
- PaddedName += " ";
- std::cout << PaddedName << "|" << SymbolAddrStr << "| "
- << TypeCharForSymbol(GV)
- << " | | | |\n";
+enum OutputFormatTy { bsd, sysv, posix, darwin };
+cl::opt<OutputFormatTy> OutputFormat(
+ "format", cl::desc("Specify output format"),
+ cl::values(clEnumVal(bsd, "BSD format"), clEnumVal(sysv, "System V format"),
+ clEnumVal(posix, "POSIX.2 format"),
+ clEnumVal(darwin, "Darwin -m format"), clEnumValEnd),
+ cl::init(bsd));
+cl::alias OutputFormat2("f", cl::desc("Alias for --format"),
+ cl::aliasopt(OutputFormat));
+
+cl::list<std::string> InputFilenames(cl::Positional, cl::desc("<input files>"),
+ cl::ZeroOrMore);
+
+cl::opt<bool> UndefinedOnly("undefined-only",
+ cl::desc("Show only undefined symbols"));
+cl::alias UndefinedOnly2("u", cl::desc("Alias for --undefined-only"),
+ cl::aliasopt(UndefinedOnly));
+
+cl::opt<bool> DynamicSyms("dynamic",
+ cl::desc("Display the dynamic symbols instead "
+ "of normal symbols."));
+cl::alias DynamicSyms2("D", cl::desc("Alias for --dynamic"),
+ cl::aliasopt(DynamicSyms));
+
+cl::opt<bool> DefinedOnly("defined-only",
+ cl::desc("Show only defined symbols"));
+
+cl::opt<bool> ExternalOnly("extern-only",
+ cl::desc("Show only external symbols"));
+cl::alias ExternalOnly2("g", cl::desc("Alias for --extern-only"),
+ cl::aliasopt(ExternalOnly));
+
+cl::opt<bool> BSDFormat("B", cl::desc("Alias for --format=bsd"));
+cl::opt<bool> POSIXFormat("P", cl::desc("Alias for --format=posix"));
+
+cl::opt<bool> PrintFileName(
+ "print-file-name",
+ cl::desc("Precede each symbol with the object file it came from"));
+
+cl::alias PrintFileNameA("A", cl::desc("Alias for --print-file-name"),
+ cl::aliasopt(PrintFileName));
+cl::alias PrintFileNameo("o", cl::desc("Alias for --print-file-name"),
+ cl::aliasopt(PrintFileName));
+
+cl::opt<bool> DebugSyms("debug-syms",
+ cl::desc("Show all symbols, even debugger only"));
+cl::alias DebugSymsa("a", cl::desc("Alias for --debug-syms"),
+ cl::aliasopt(DebugSyms));
+
+cl::opt<bool> NumericSort("numeric-sort", cl::desc("Sort symbols by address"));
+cl::alias NumericSortn("n", cl::desc("Alias for --numeric-sort"),
+ cl::aliasopt(NumericSort));
+cl::alias NumericSortv("v", cl::desc("Alias for --numeric-sort"),
+ cl::aliasopt(NumericSort));
+
+cl::opt<bool> NoSort("no-sort", cl::desc("Show symbols in order encountered"));
+cl::alias NoSortp("p", cl::desc("Alias for --no-sort"), cl::aliasopt(NoSort));
+
+cl::opt<bool> PrintSize("print-size",
+ cl::desc("Show symbol size instead of address"));
+cl::alias PrintSizeS("S", cl::desc("Alias for --print-size"),
+ cl::aliasopt(PrintSize));
+
+cl::opt<bool> SizeSort("size-sort", cl::desc("Sort symbols by size"));
+
+cl::opt<bool> WithoutAliases("without-aliases", cl::Hidden,
+ cl::desc("Exclude aliases from output"));
+
+cl::opt<bool> ArchiveMap("print-armap", cl::desc("Print the archive map"));
+cl::alias ArchiveMaps("s", cl::desc("Alias for --print-armap"),
+ cl::aliasopt(ArchiveMap));
+bool PrintAddress = true;
+
+bool MultipleFiles = false;
+
+bool HadError = false;
+
+std::string ToolName;
+}
+
+static void error(Twine Message, Twine Path = Twine()) {
+ HadError = true;
+ errs() << ToolName << ": " << Path << ": " << Message << ".\n";
+}
+
+static bool error(std::error_code EC, Twine Path = Twine()) {
+ if (EC) {
+ error(EC.message(), Path);
+ return true;
+ }
+ return false;
+}
+
+namespace {
+struct NMSymbol {
+ uint64_t Address;
+ uint64_t Size;
+ char TypeChar;
+ StringRef Name;
+ DataRefImpl Symb;
+};
+}
+
+static bool compareSymbolAddress(const NMSymbol &A, const NMSymbol &B) {
+ if (A.Address < B.Address)
+ return true;
+ else if (A.Address == B.Address && A.Name < B.Name)
+ return true;
+ else if (A.Address == B.Address && A.Name == B.Name && A.Size < B.Size)
+ return true;
+ else
+ return false;
+}
+
+static bool compareSymbolSize(const NMSymbol &A, const NMSymbol &B) {
+ if (A.Size < B.Size)
+ return true;
+ else if (A.Size == B.Size && A.Name < B.Name)
+ return true;
+ else if (A.Size == B.Size && A.Name == B.Name && A.Address < B.Address)
+ return true;
+ else
+ return false;
+}
+
+static bool compareSymbolName(const NMSymbol &A, const NMSymbol &B) {
+ if (A.Name < B.Name)
+ return true;
+ else if (A.Name == B.Name && A.Size < B.Size)
+ return true;
+ else if (A.Name == B.Name && A.Size == B.Size && A.Address < B.Address)
+ return true;
+ else
+ return false;
+}
+
+static char isSymbolList64Bit(SymbolicFile *Obj) {
+ if (isa<IRObjectFile>(Obj))
+ return false;
+ else if (isa<COFFObjectFile>(Obj))
+ return false;
+ else if (MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(Obj))
+ return MachO->is64Bit();
+ else if (isa<ELF32LEObjectFile>(Obj))
+ return false;
+ else if (isa<ELF64LEObjectFile>(Obj))
+ return true;
+ else if (isa<ELF32BEObjectFile>(Obj))
+ return false;
+ else if(isa<ELF64BEObjectFile>(Obj))
+ return true;
+ else
+ return false;
+}
+
+static StringRef CurrentFilename;
+typedef std::vector<NMSymbol> SymbolListT;
+static SymbolListT SymbolList;
+
+// darwinPrintSymbol() is used to print a symbol from a Mach-O file when the
+// the OutputFormat is darwin. It produces the same output as darwin's nm(1) -m
+// output.
+static void darwinPrintSymbol(MachOObjectFile *MachO, SymbolListT::iterator I,
+ char *SymbolAddrStr, const char *printBlanks) {
+ MachO::mach_header H;
+ MachO::mach_header_64 H_64;
+ uint32_t Filetype, Flags;
+ MachO::nlist_64 STE_64;
+ MachO::nlist STE;
+ uint8_t NType;
+ uint16_t NDesc;
+ uint64_t NValue;
+ if (MachO->is64Bit()) {
+ H_64 = MachO->MachOObjectFile::getHeader64();
+ Filetype = H_64.filetype;
+ Flags = H_64.flags;
+ STE_64 = MachO->getSymbol64TableEntry(I->Symb);
+ NType = STE_64.n_type;
+ NDesc = STE_64.n_desc;
+ NValue = STE_64.n_value;
+ } else {
+ H = MachO->MachOObjectFile::getHeader();
+ Filetype = H.filetype;
+ Flags = H.flags;
+ STE = MachO->getSymbolTableEntry(I->Symb);
+ NType = STE.n_type;
+ NDesc = STE.n_desc;
+ NValue = STE.n_value;
+ }
+
+ if (PrintAddress) {
+ if ((NType & MachO::N_TYPE) == MachO::N_INDR)
+ strcpy(SymbolAddrStr, printBlanks);
+ outs() << SymbolAddrStr << ' ';
+ }
+
+ switch (NType & MachO::N_TYPE) {
+ case MachO::N_UNDF:
+ if (NValue != 0) {
+ outs() << "(common) ";
+ if (MachO::GET_COMM_ALIGN(NDesc) != 0)
+ outs() << "(alignment 2^" <<
+ (int)MachO::GET_COMM_ALIGN(NDesc) << ") ";
+ } else {
+ if ((NType & MachO::N_TYPE) == MachO::N_PBUD)
+ outs() << "(prebound ";
+ else
+ outs() << "(";
+ if ((NDesc & MachO::REFERENCE_TYPE) ==
+ MachO::REFERENCE_FLAG_UNDEFINED_LAZY)
+ outs() << "undefined [lazy bound]) ";
+ else if ((NDesc & MachO::REFERENCE_TYPE) ==
+ MachO::REFERENCE_FLAG_UNDEFINED_LAZY)
+ outs() << "undefined [private lazy bound]) ";
+ else if ((NDesc & MachO::REFERENCE_TYPE) ==
+ MachO::REFERENCE_FLAG_PRIVATE_UNDEFINED_NON_LAZY)
+ outs() << "undefined [private]) ";
+ else
+ outs() << "undefined) ";
+ }
+ break;
+ case MachO::N_ABS:
+ outs() << "(absolute) ";
+ break;
+ case MachO::N_INDR:
+ outs() << "(indirect) ";
+ break;
+ case MachO::N_SECT: {
+ section_iterator Sec = MachO->section_end();
+ MachO->getSymbolSection(I->Symb, Sec);
+ DataRefImpl Ref = Sec->getRawDataRefImpl();
+ StringRef SectionName;
+ MachO->getSectionName(Ref, SectionName);
+ StringRef SegmentName = MachO->getSectionFinalSegmentName(Ref);
+ outs() << "(" << SegmentName << "," << SectionName << ") ";
+ break;
+ }
+ default:
+ outs() << "(?) ";
+ break;
+ }
+
+ if (NType & MachO::N_EXT) {
+ if (NDesc & MachO::REFERENCED_DYNAMICALLY)
+ outs() << "[referenced dynamically] ";
+ if (NType & MachO::N_PEXT) {
+ if ((NDesc & MachO::N_WEAK_DEF) == MachO::N_WEAK_DEF)
+ outs() << "weak private external ";
+ else
+ outs() << "private external ";
+ } else {
+ if ((NDesc & MachO::N_WEAK_REF) == MachO::N_WEAK_REF ||
+ (NDesc & MachO::N_WEAK_DEF) == MachO::N_WEAK_DEF){
+ if ((NDesc & (MachO::N_WEAK_REF | MachO::N_WEAK_DEF)) ==
+ (MachO::N_WEAK_REF | MachO::N_WEAK_DEF))
+ outs() << "weak external automatically hidden ";
+ else
+ outs() << "weak external ";
+ }
+ else
+ outs() << "external ";
+ }
+ } else {
+ if (NType & MachO::N_PEXT)
+ outs() << "non-external (was a private external) ";
+ else
+ outs() << "non-external ";
+ }
+
+ if (Filetype == MachO::MH_OBJECT &&
+ (NDesc & MachO::N_NO_DEAD_STRIP) == MachO::N_NO_DEAD_STRIP)
+ outs() << "[no dead strip] ";
+
+ if (Filetype == MachO::MH_OBJECT &&
+ ((NType & MachO::N_TYPE) != MachO::N_UNDF) &&
+ (NDesc & MachO::N_SYMBOL_RESOLVER) == MachO::N_SYMBOL_RESOLVER)
+ outs() << "[symbol resolver] ";
+
+ if (Filetype == MachO::MH_OBJECT &&
+ ((NType & MachO::N_TYPE) != MachO::N_UNDF) &&
+ (NDesc & MachO::N_ALT_ENTRY) == MachO::N_ALT_ENTRY)
+ outs() << "[alt entry] ";
+
+ if ((NDesc & MachO::N_ARM_THUMB_DEF) == MachO::N_ARM_THUMB_DEF)
+ outs() << "[Thumb] ";
+
+ if ((NType & MachO::N_TYPE) == MachO::N_INDR) {
+ outs() << I->Name << " (for ";
+ StringRef IndirectName;
+ if (MachO->getIndirectName(I->Symb, IndirectName))
+ outs() << "?)";
+ else
+ outs() << IndirectName << ")";
}
+ else
+ outs() << I->Name;
+
+ if ((Flags & MachO::MH_TWOLEVEL) == MachO::MH_TWOLEVEL &&
+ (((NType & MachO::N_TYPE) == MachO::N_UNDF &&
+ NValue == 0) ||
+ (NType & MachO::N_TYPE) == MachO::N_PBUD)) {
+ uint32_t LibraryOrdinal = MachO::GET_LIBRARY_ORDINAL(NDesc);
+ if (LibraryOrdinal != 0) {
+ if (LibraryOrdinal == MachO::EXECUTABLE_ORDINAL)
+ outs() << " (from executable)";
+ else if (LibraryOrdinal == MachO::DYNAMIC_LOOKUP_ORDINAL)
+ outs() << " (dynamically looked up)";
+ else {
+ StringRef LibraryName;
+ if (MachO->getLibraryShortNameByIndex(LibraryOrdinal - 1,
+ LibraryName))
+ outs() << " (from bad library ordinal " <<
+ LibraryOrdinal << ")";
+ else
+ outs() << " (from " << LibraryName << ")";
+ }
+ }
+ }
+
+ outs() << "\n";
}
-static void DumpSymbolNamesFromModule(Module *M) {
- const std::string &Filename = M->getModuleIdentifier ();
+static void sortAndPrintSymbolList(SymbolicFile *Obj) {
+ if (!NoSort) {
+ if (NumericSort)
+ std::sort(SymbolList.begin(), SymbolList.end(), compareSymbolAddress);
+ else if (SizeSort)
+ std::sort(SymbolList.begin(), SymbolList.end(), compareSymbolSize);
+ else
+ std::sort(SymbolList.begin(), SymbolList.end(), compareSymbolName);
+ }
+
if (OutputFormat == posix && MultipleFiles) {
- std::cout << Filename << ":\n";
+ outs() << '\n' << CurrentFilename << ":\n";
} else if (OutputFormat == bsd && MultipleFiles) {
- std::cout << "\n" << Filename << ":\n";
+ outs() << "\n" << CurrentFilename << ":\n";
} else if (OutputFormat == sysv) {
- std::cout << "\n\nSymbols from " << Filename << ":\n\n"
- << "Name Value Class Type"
- << " Size Line Section\n";
- }
- std::for_each (M->begin(), M->end(), DumpSymbolNameForGlobalValue);
- std::for_each (M->global_begin(), M->global_end(),
- DumpSymbolNameForGlobalValue);
- std::for_each (M->alias_begin(), M->alias_end(),
- DumpSymbolNameForGlobalValue);
-}
-
-static void DumpSymbolNamesFromFile(std::string &Filename) {
- LLVMContext Context;
- std::string ErrorMessage;
- sys::Path aPath(Filename);
- // Note: Currently we do not support reading an archive from stdin.
- if (Filename == "-" || aPath.isBitcodeFile()) {
- std::auto_ptr<MemoryBuffer> Buffer(
- MemoryBuffer::getFileOrSTDIN(Filename, &ErrorMessage));
- Module *Result = 0;
- if (Buffer.get())
- Result = ParseBitcodeFile(Buffer.get(), Context, &ErrorMessage);
-
- if (Result)
- DumpSymbolNamesFromModule(Result);
- else {
- std::cerr << ToolName << ": " << Filename << ": " << ErrorMessage << "\n";
- return;
+ outs() << "\n\nSymbols from " << CurrentFilename << ":\n\n"
+ << "Name Value Class Type"
+ << " Size Line Section\n";
+ }
+
+ const char *printBlanks, *printFormat;
+ if (isSymbolList64Bit(Obj)) {
+ printBlanks = " ";
+ printFormat = "%016" PRIx64;
+ } else {
+ printBlanks = " ";
+ printFormat = "%08" PRIx64;
+ }
+
+ for (SymbolListT::iterator I = SymbolList.begin(), E = SymbolList.end();
+ I != E; ++I) {
+ if ((I->TypeChar != 'U') && UndefinedOnly)
+ continue;
+ if ((I->TypeChar == 'U') && DefinedOnly)
+ continue;
+ if (SizeSort && !PrintAddress && I->Size == UnknownAddressOrSize)
+ continue;
+
+ char SymbolAddrStr[18] = "";
+ char SymbolSizeStr[18] = "";
+
+ if (OutputFormat == sysv || I->Address == UnknownAddressOrSize)
+ strcpy(SymbolAddrStr, printBlanks);
+ if (OutputFormat == sysv)
+ strcpy(SymbolSizeStr, printBlanks);
+
+ if (I->Address != UnknownAddressOrSize)
+ format(printFormat, I->Address)
+ .print(SymbolAddrStr, sizeof(SymbolAddrStr));
+ if (I->Size != UnknownAddressOrSize)
+ format(printFormat, I->Size).print(SymbolSizeStr, sizeof(SymbolSizeStr));
+
+ // If OutputFormat is darwin and we have a MachOObjectFile print as darwin's
+ // nm(1) -m output, else if OutputFormat is darwin and not a Mach-O object
+ // fall back to OutputFormat bsd (see below).
+ MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(Obj);
+ if (OutputFormat == darwin && MachO) {
+ darwinPrintSymbol(MachO, I, SymbolAddrStr, printBlanks);
+ } else if (OutputFormat == posix) {
+ outs() << I->Name << " " << I->TypeChar << " " << SymbolAddrStr
+ << SymbolSizeStr << "\n";
+ } else if (OutputFormat == bsd || (OutputFormat == darwin && !MachO)) {
+ if (PrintAddress)
+ outs() << SymbolAddrStr << ' ';
+ if (PrintSize) {
+ outs() << SymbolSizeStr;
+ if (I->Size != UnknownAddressOrSize)
+ outs() << ' ';
+ }
+ outs() << I->TypeChar << " " << I->Name << "\n";
+ } else if (OutputFormat == sysv) {
+ std::string PaddedName(I->Name);
+ while (PaddedName.length() < 20)
+ PaddedName += " ";
+ outs() << PaddedName << "|" << SymbolAddrStr << "| " << I->TypeChar
+ << " | |" << SymbolSizeStr << "| |\n";
}
-
- } else if (aPath.isArchive()) {
- std::string ErrMsg;
- Archive* archive = Archive::OpenAndLoad(sys::Path(Filename), Context,
- &ErrorMessage);
- if (!archive)
- std::cerr << ToolName << ": " << Filename << ": " << ErrorMessage << "\n";
- std::vector<Module *> Modules;
- if (archive->getAllModules(Modules, &ErrorMessage)) {
- std::cerr << ToolName << ": " << Filename << ": " << ErrorMessage << "\n";
+ }
+
+ SymbolList.clear();
+}
+
+template <class ELFT>
+static char getSymbolNMTypeChar(ELFObjectFile<ELFT> &Obj,
+ basic_symbol_iterator I) {
+ typedef typename ELFObjectFile<ELFT>::Elf_Sym Elf_Sym;
+ typedef typename ELFObjectFile<ELFT>::Elf_Shdr Elf_Shdr;
+
+ // OK, this is ELF
+ symbol_iterator SymI(I);
+
+ DataRefImpl Symb = I->getRawDataRefImpl();
+ const Elf_Sym *ESym = Obj.getSymbol(Symb);
+ const ELFFile<ELFT> &EF = *Obj.getELFFile();
+ const Elf_Shdr *ESec = EF.getSection(ESym);
+
+ if (ESec) {
+ switch (ESec->sh_type) {
+ case ELF::SHT_PROGBITS:
+ case ELF::SHT_DYNAMIC:
+ switch (ESec->sh_flags) {
+ case(ELF::SHF_ALLOC | ELF::SHF_EXECINSTR) :
+ return 't';
+ case(ELF::SHF_TLS | ELF::SHF_ALLOC | ELF::SHF_WRITE) :
+ case(ELF::SHF_ALLOC | ELF::SHF_WRITE) :
+ return 'd';
+ case ELF::SHF_ALLOC:
+ case(ELF::SHF_ALLOC | ELF::SHF_MERGE) :
+ case(ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS) :
+ return 'r';
+ }
+ break;
+ case ELF::SHT_NOBITS:
+ return 'b';
+ }
+ }
+
+ if (ESym->getType() == ELF::STT_SECTION) {
+ StringRef Name;
+ if (error(SymI->getName(Name)))
+ return '?';
+ return StringSwitch<char>(Name)
+ .StartsWith(".debug", 'N')
+ .StartsWith(".note", 'n')
+ .Default('?');
+ }
+
+ return '?';
+}
+
+static char getSymbolNMTypeChar(COFFObjectFile &Obj, symbol_iterator I) {
+ const coff_symbol *Symb = Obj.getCOFFSymbol(*I);
+ // OK, this is COFF.
+ symbol_iterator SymI(I);
+
+ StringRef Name;
+ if (error(SymI->getName(Name)))
+ return '?';
+
+ char Ret = StringSwitch<char>(Name)
+ .StartsWith(".debug", 'N')
+ .StartsWith(".sxdata", 'N')
+ .Default('?');
+
+ if (Ret != '?')
+ return Ret;
+
+ uint32_t Characteristics = 0;
+ if (!COFF::isReservedSectionNumber(Symb->SectionNumber)) {
+ section_iterator SecI = Obj.section_end();
+ if (error(SymI->getSection(SecI)))
+ return '?';
+ const coff_section *Section = Obj.getCOFFSection(*SecI);
+ Characteristics = Section->Characteristics;
+ }
+
+ switch (Symb->SectionNumber) {
+ case COFF::IMAGE_SYM_DEBUG:
+ return 'n';
+ default:
+ // Check section type.
+ if (Characteristics & COFF::IMAGE_SCN_CNT_CODE)
+ return 't';
+ else if (Characteristics & COFF::IMAGE_SCN_MEM_READ &&
+ ~Characteristics & COFF::IMAGE_SCN_MEM_WRITE) // Read only.
+ return 'r';
+ else if (Characteristics & COFF::IMAGE_SCN_CNT_INITIALIZED_DATA)
+ return 'd';
+ else if (Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA)
+ return 'b';
+ else if (Characteristics & COFF::IMAGE_SCN_LNK_INFO)
+ return 'i';
+
+ // Check for section symbol.
+ else if (Symb->isSectionDefinition())
+ return 's';
+ }
+
+ return '?';
+}
+
+static uint8_t getNType(MachOObjectFile &Obj, DataRefImpl Symb) {
+ if (Obj.is64Bit()) {
+ MachO::nlist_64 STE = Obj.getSymbol64TableEntry(Symb);
+ return STE.n_type;
+ }
+ MachO::nlist STE = Obj.getSymbolTableEntry(Symb);
+ return STE.n_type;
+}
+
+static char getSymbolNMTypeChar(MachOObjectFile &Obj, basic_symbol_iterator I) {
+ DataRefImpl Symb = I->getRawDataRefImpl();
+ uint8_t NType = getNType(Obj, Symb);
+
+ switch (NType & MachO::N_TYPE) {
+ case MachO::N_ABS:
+ return 's';
+ case MachO::N_INDR:
+ return 'i';
+ case MachO::N_SECT: {
+ section_iterator Sec = Obj.section_end();
+ Obj.getSymbolSection(Symb, Sec);
+ DataRefImpl Ref = Sec->getRawDataRefImpl();
+ StringRef SectionName;
+ Obj.getSectionName(Ref, SectionName);
+ StringRef SegmentName = Obj.getSectionFinalSegmentName(Ref);
+ if (SegmentName == "__TEXT" && SectionName == "__text")
+ return 't';
+ else if (SegmentName == "__DATA" && SectionName == "__data")
+ return 'd';
+ else if (SegmentName == "__DATA" && SectionName == "__bss")
+ return 'b';
+ else
+ return 's';
+ }
+ }
+
+ return '?';
+}
+
+static char getSymbolNMTypeChar(const GlobalValue &GV) {
+ if (GV.getType()->getElementType()->isFunctionTy())
+ return 't';
+ // FIXME: should we print 'b'? At the IR level we cannot be sure if this
+ // will be in bss or not, but we could approximate.
+ return 'd';
+}
+
+static char getSymbolNMTypeChar(IRObjectFile &Obj, basic_symbol_iterator I) {
+ const GlobalValue &GV = Obj.getSymbolGV(I->getRawDataRefImpl());
+ return getSymbolNMTypeChar(GV);
+}
+
+template <class ELFT>
+static bool isObject(ELFObjectFile<ELFT> &Obj, symbol_iterator I) {
+ typedef typename ELFObjectFile<ELFT>::Elf_Sym Elf_Sym;
+
+ DataRefImpl Symb = I->getRawDataRefImpl();
+ const Elf_Sym *ESym = Obj.getSymbol(Symb);
+
+ return ESym->getType() == ELF::STT_OBJECT;
+}
+
+static bool isObject(SymbolicFile *Obj, basic_symbol_iterator I) {
+ if (ELF32LEObjectFile *ELF = dyn_cast<ELF32LEObjectFile>(Obj))
+ return isObject(*ELF, I);
+ if (ELF64LEObjectFile *ELF = dyn_cast<ELF64LEObjectFile>(Obj))
+ return isObject(*ELF, I);
+ if (ELF32BEObjectFile *ELF = dyn_cast<ELF32BEObjectFile>(Obj))
+ return isObject(*ELF, I);
+ if (ELF64BEObjectFile *ELF = dyn_cast<ELF64BEObjectFile>(Obj))
+ return isObject(*ELF, I);
+ return false;
+}
+
+static char getNMTypeChar(SymbolicFile *Obj, basic_symbol_iterator I) {
+ uint32_t Symflags = I->getFlags();
+ if ((Symflags & object::SymbolRef::SF_Weak) && !isa<MachOObjectFile>(Obj)) {
+ char Ret = isObject(Obj, I) ? 'v' : 'w';
+ if (!(Symflags & object::SymbolRef::SF_Undefined))
+ Ret = toupper(Ret);
+ return Ret;
+ }
+
+ if (Symflags & object::SymbolRef::SF_Undefined)
+ return 'U';
+
+ if (Symflags & object::SymbolRef::SF_Common)
+ return 'C';
+
+ char Ret = '?';
+ if (Symflags & object::SymbolRef::SF_Absolute)
+ Ret = 'a';
+ else if (IRObjectFile *IR = dyn_cast<IRObjectFile>(Obj))
+ Ret = getSymbolNMTypeChar(*IR, I);
+ else if (COFFObjectFile *COFF = dyn_cast<COFFObjectFile>(Obj))
+ Ret = getSymbolNMTypeChar(*COFF, I);
+ else if (MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(Obj))
+ Ret = getSymbolNMTypeChar(*MachO, I);
+ else if (ELF32LEObjectFile *ELF = dyn_cast<ELF32LEObjectFile>(Obj))
+ Ret = getSymbolNMTypeChar(*ELF, I);
+ else if (ELF64LEObjectFile *ELF = dyn_cast<ELF64LEObjectFile>(Obj))
+ Ret = getSymbolNMTypeChar(*ELF, I);
+ else if (ELF32BEObjectFile *ELF = dyn_cast<ELF32BEObjectFile>(Obj))
+ Ret = getSymbolNMTypeChar(*ELF, I);
+ else
+ Ret = getSymbolNMTypeChar(*cast<ELF64BEObjectFile>(Obj), I);
+
+ if (Symflags & object::SymbolRef::SF_Global)
+ Ret = toupper(Ret);
+
+ return Ret;
+}
+
+static void dumpSymbolNamesFromObject(SymbolicFile *Obj) {
+ basic_symbol_iterator IBegin = Obj->symbol_begin();
+ basic_symbol_iterator IEnd = Obj->symbol_end();
+ if (DynamicSyms) {
+ if (!Obj->isELF()) {
+ error("File format has no dynamic symbol table", Obj->getFileName());
return;
}
- MultipleFiles = true;
- std::for_each (Modules.begin(), Modules.end(), DumpSymbolNamesFromModule);
- } else {
- std::cerr << ToolName << ": " << Filename << ": "
- << "unrecognizable file type\n";
+ std::pair<symbol_iterator, symbol_iterator> IDyn =
+ getELFDynamicSymbolIterators(Obj);
+ IBegin = IDyn.first;
+ IEnd = IDyn.second;
+ }
+ std::string NameBuffer;
+ raw_string_ostream OS(NameBuffer);
+ for (basic_symbol_iterator I = IBegin; I != IEnd; ++I) {
+ uint32_t SymFlags = I->getFlags();
+ if (!DebugSyms && (SymFlags & SymbolRef::SF_FormatSpecific))
+ continue;
+ if (WithoutAliases) {
+ if (IRObjectFile *IR = dyn_cast<IRObjectFile>(Obj)) {
+ const GlobalValue &GV = IR->getSymbolGV(I->getRawDataRefImpl());
+ if(isa<GlobalAlias>(GV))
+ continue;
+ }
+ }
+ NMSymbol S;
+ S.Size = UnknownAddressOrSize;
+ S.Address = UnknownAddressOrSize;
+ if ((PrintSize || SizeSort) && isa<ObjectFile>(Obj)) {
+ symbol_iterator SymI = I;
+ if (error(SymI->getSize(S.Size)))
+ break;
+ }
+ if (PrintAddress && isa<ObjectFile>(Obj))
+ if (error(symbol_iterator(I)->getAddress(S.Address)))
+ break;
+ S.TypeChar = getNMTypeChar(Obj, I);
+ if (error(I->printName(OS)))
+ break;
+ OS << '\0';
+ S.Symb = I->getRawDataRefImpl();
+ SymbolList.push_back(S);
+ }
+
+ OS.flush();
+ const char *P = NameBuffer.c_str();
+ for (unsigned I = 0; I < SymbolList.size(); ++I) {
+ SymbolList[I].Name = P;
+ P += strlen(P) + 1;
+ }
+
+ CurrentFilename = Obj->getFileName();
+ sortAndPrintSymbolList(Obj);
+}
+
+static void dumpSymbolNamesFromFile(std::string &Filename) {
+ std::unique_ptr<MemoryBuffer> Buffer;
+ if (error(MemoryBuffer::getFileOrSTDIN(Filename, Buffer), Filename))
+ return;
+
+ LLVMContext &Context = getGlobalContext();
+ ErrorOr<Binary *> BinaryOrErr = createBinary(Buffer.release(), &Context);
+ if (error(BinaryOrErr.getError(), Filename))
+ return;
+ std::unique_ptr<Binary> Bin(BinaryOrErr.get());
+
+ if (Archive *A = dyn_cast<Archive>(Bin.get())) {
+ if (ArchiveMap) {
+ Archive::symbol_iterator I = A->symbol_begin();
+ Archive::symbol_iterator E = A->symbol_end();
+ if (I != E) {
+ outs() << "Archive map\n";
+ for (; I != E; ++I) {
+ ErrorOr<Archive::child_iterator> C = I->getMember();
+ if (error(C.getError()))
+ return;
+ ErrorOr<StringRef> FileNameOrErr = C.get()->getName();
+ if (error(FileNameOrErr.getError()))
+ return;
+ StringRef SymName = I->getName();
+ outs() << SymName << " in " << FileNameOrErr.get() << "\n";
+ }
+ outs() << "\n";
+ }
+ }
+
+ for (Archive::child_iterator I = A->child_begin(), E = A->child_end();
+ I != E; ++I) {
+ ErrorOr<std::unique_ptr<Binary>> ChildOrErr = I->getAsBinary(&Context);
+ if (ChildOrErr.getError())
+ continue;
+ if (SymbolicFile *O = dyn_cast<SymbolicFile>(&*ChildOrErr.get())) {
+ if (isa<MachOObjectFile>(O)) {
+ outs() << Filename << "(" << O->getFileName() << ")";
+ } else
+ outs() << O->getFileName();
+ outs() << ":\n";
+ dumpSymbolNamesFromObject(O);
+ }
+ }
return;
}
+ if (MachOUniversalBinary *UB = dyn_cast<MachOUniversalBinary>(Bin.get())) {
+ bool moreThanOneArch = UB->getNumberOfObjects() > 1;
+ for (MachOUniversalBinary::object_iterator I = UB->begin_objects(),
+ E = UB->end_objects();
+ I != E; ++I) {
+ std::unique_ptr<ObjectFile> Obj;
+ std::unique_ptr<Archive> A;
+ if (!I->getAsObjectFile(Obj)) {
+ outs() << Obj->getFileName();
+ if (isa<MachOObjectFile>(Obj.get()) && moreThanOneArch)
+ outs() << " (for architecture " << I->getArchTypeName() << ")";
+ outs() << ":\n";
+ dumpSymbolNamesFromObject(Obj.get());
+ }
+ else if (!I->getAsArchive(A)) {
+ for (Archive::child_iterator AI = A->child_begin(), AE = A->child_end();
+ AI != AE; ++AI) {
+ ErrorOr<std::unique_ptr<Binary>> ChildOrErr =
+ AI->getAsBinary(&Context);
+ if (ChildOrErr.getError())
+ continue;
+ if (SymbolicFile *O = dyn_cast<SymbolicFile>(&*ChildOrErr.get())) {
+ outs() << A->getFileName();
+ if (isa<MachOObjectFile>(O)) {
+ outs() << "(" << O->getFileName() << ")";
+ if (moreThanOneArch)
+ outs() << " (for architecture " << I->getArchTypeName() << ")";
+ } else
+ outs() << ":" << O->getFileName();
+ outs() << ":\n";
+ dumpSymbolNamesFromObject(O);
+ }
+ }
+ }
+ }
+ return;
+ }
+ if (SymbolicFile *O = dyn_cast<SymbolicFile>(Bin.get())) {
+ dumpSymbolNamesFromObject(O);
+ return;
+ }
+ error("unrecognizable file type", Filename);
+ return;
}
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.
+
+ llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
cl::ParseCommandLineOptions(argc, argv, "llvm symbol table dumper\n");
+ // llvm-nm only reads binary files.
+ if (error(sys::ChangeStdinToBinary()))
+ return 1;
+
ToolName = argv[0];
- if (BSDFormat) OutputFormat = bsd;
- if (POSIXFormat) OutputFormat = posix;
+ if (BSDFormat)
+ OutputFormat = bsd;
+ if (POSIXFormat)
+ OutputFormat = posix;
+
+ // The relative order of these is important. If you pass --size-sort it should
+ // only print out the size. However, if you pass -S --size-sort, it should
+ // print out both the size and address.
+ if (SizeSort && !PrintSize)
+ PrintAddress = false;
+ if (OutputFormat == sysv || SizeSort)
+ PrintSize = true;
switch (InputFilenames.size()) {
- case 0: InputFilenames.push_back("-");
- case 1: break;
- default: MultipleFiles = true;
+ case 0:
+ InputFilenames.push_back("-");
+ case 1:
+ break;
+ default:
+ MultipleFiles = true;
}
std::for_each(InputFilenames.begin(), InputFilenames.end(),
- DumpSymbolNamesFromFile);
+ dumpSymbolNamesFromFile);
+
+ if (HadError)
+ return 1;
+
return 0;
}
projects / oota-llvm.git / blobdiff