//
//===----------------------------------------------------------------------===//
//
-// 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/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/Program.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/Format.h"
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"));
std::string ToolName;
}
+
+static void error(Twine message, Twine path = Twine()) {
+ errs() << ToolName << ": " << path << ": " << message << ".\n";
+}
+
+static bool error(error_code ec, Twine path = Twine()) {
+ if (ec) {
+ error(ec.message(), path);
+ return true;
+ }
+ return false;
+}
+
namespace {
struct NMSymbol {
uint64_t Address;
StringRef CurrentFilename;
typedef std::vector<NMSymbol> SymbolListT;
SymbolListT SymbolList;
-
- bool error(error_code ec) {
- if (!ec) return false;
-
- outs() << ToolName << ": error reading file: " << ec.message() << ".\n";
- outs().flush();
- return true;
- }
}
static void SortAndPrintSymbolList() {
strcpy(SymbolSizeStr, " ");
if (i->Address != object::UnknownAddressOrSize)
- format("%08"PRIx64, i->Address).print(SymbolAddrStr, sizeof(SymbolAddrStr));
+ format("%08" PRIx64, i->Address).print(SymbolAddrStr,
+ sizeof(SymbolAddrStr));
if (i->Size != object::UnknownAddressOrSize)
- format("%08"PRIx64, i->Size).print(SymbolSizeStr, sizeof(SymbolSizeStr));
+ format("%08" PRIx64, i->Size).print(SymbolSizeStr, sizeof(SymbolSizeStr));
if (OutputFormat == posix) {
outs() << i->Name << " " << i->TypeChar << " "
static void DumpSymbolNamesFromObject(ObjectFile *obj) {
error_code ec;
- for (symbol_iterator i = obj->begin_symbols(),
- e = obj->end_symbols();
- i != e; i.increment(ec)) {
+ symbol_iterator ibegin = obj->begin_symbols();
+ symbol_iterator iend = obj->end_symbols();
+ if (DynamicSyms) {
+ ibegin = obj->begin_dynamic_symbols();
+ iend = obj->end_dynamic_symbols();
+ }
+ for (symbol_iterator i = ibegin; i != iend; i.increment(ec)) {
if (error(ec)) break;
- bool internal;
- if (error(i->isInternal(internal))) break;
- if (!DebugSyms && internal)
+ uint32_t symflags;
+ if (error(i->getFlags(symflags))) break;
+ if (!DebugSyms && (symflags & SymbolRef::SF_FormatSpecific))
continue;
NMSymbol s;
s.Size = object::UnknownAddressOrSize;
if (error(i->getSize(s.Size))) break;
}
if (PrintAddress)
- if (error(i->getFileOffset(s.Address))) break;
+ if (error(i->getAddress(s.Address))) break;
if (error(i->getNMTypeChar(s.TypeChar))) break;
if (error(i->getName(s.Name))) break;
SymbolList.push_back(s);
}
static void DumpSymbolNamesFromFile(std::string &Filename) {
+ if (Filename != "-" && !sys::fs::exists(Filename)) {
+ errs() << ToolName << ": '" << Filename << "': " << "No such file\n";
+ return;
+ }
+
+ OwningPtr<MemoryBuffer> Buffer;
+ if (error(MemoryBuffer::getFileOrSTDIN(Filename, Buffer), Filename))
+ return;
+
+ sys::fs::file_magic magic = sys::fs::identify_magic(Buffer->getBuffer());
+
LLVMContext &Context = getGlobalContext();
std::string ErrorMessage;
- sys::Path aPath(Filename);
- bool exists;
- if (sys::fs::exists(aPath.str(), exists) || !exists)
- errs() << ToolName << ": '" << Filename << "': " << "No such file\n";
- // Note: Currently we do not support reading an archive from stdin.
- if (Filename == "-" || aPath.isBitcodeFile()) {
- OwningPtr<MemoryBuffer> Buffer;
- if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buffer))
- ErrorMessage = ec.message();
+ if (magic == sys::fs::file_magic::bitcode) {
Module *Result = 0;
- if (Buffer.get())
- Result = ParseBitcodeFile(Buffer.get(), Context, &ErrorMessage);
-
+ Result = ParseBitcodeFile(Buffer.get(), Context, &ErrorMessage);
if (Result) {
DumpSymbolNamesFromModule(Result);
delete Result;
- } else
- errs() << ToolName << ": " << Filename << ": " << ErrorMessage << "\n";
-
- } else if (aPath.isArchive()) {
- OwningPtr<Binary> arch;
- if (error_code ec = object::createBinary(aPath.str(), arch)) {
- errs() << ToolName << ": " << Filename << ": " << ec.message() << ".\n";
+ } else {
+ error(ErrorMessage, Filename);
return;
}
+ } else if (magic == sys::fs::file_magic::archive) {
+ OwningPtr<Binary> arch;
+ if (error(object::createBinary(Buffer.take(), arch), Filename))
+ return;
+
if (object::Archive *a = dyn_cast<object::Archive>(arch.get())) {
for (object::Archive::child_iterator i = a->begin_children(),
e = a->end_children(); i != e; ++i) {
OwningPtr<Binary> child;
- if (error_code ec = i->getAsBinary(child)) {
+ if (i->getAsBinary(child)) {
// Try opening it as a bitcode file.
OwningPtr<MemoryBuffer> buff(i->getBuffer());
Module *Result = 0;
}
}
}
- } else if (aPath.isObjectFile()) {
+ } else if (magic.is_object()) {
OwningPtr<Binary> obj;
- if (error_code ec = object::createBinary(aPath.str(), obj)) {
- errs() << ToolName << ": " << Filename << ": " << ec.message() << ".\n";
+ if (error(object::createBinary(Buffer.take(), obj), Filename))
return;
- }
if (object::ObjectFile *o = dyn_cast<ObjectFile>(obj.get()))
DumpSymbolNamesFromObject(o);
} else {
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::Program::ChangeStdinToBinary()))
+ return 1;
+
ToolName = argv[0];
if (BSDFormat) OutputFormat = bsd;
if (POSIXFormat) OutputFormat = posix;
projects / oota-llvm.git / blobdiff