1 //===-- dsymutil.cpp - Debug info 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 aims to be a dropin replacement for
13 //===----------------------------------------------------------------------===//
16 #include "MachOUtils.h"
18 #include "llvm/Object/MachO.h"
19 #include "llvm/Support/FileSystem.h"
20 #include "llvm/Support/FileUtilities.h"
21 #include "llvm/Support/ManagedStatic.h"
22 #include "llvm/Support/Options.h"
23 #include "llvm/Support/PrettyStackTrace.h"
24 #include "llvm/Support/Signals.h"
25 #include "llvm/Support/raw_ostream.h"
26 #include "llvm/Support/TargetSelect.h"
30 using namespace llvm::dsymutil;
33 using namespace llvm::cl;
35 OptionCategory DsymCategory("Specific Options");
36 static opt<bool> Help("h", desc("Alias for -help"), Hidden);
37 static opt<bool> Version("v", desc("Alias for -version"), Hidden);
39 static list<std::string> InputFiles(Positional, OneOrMore,
40 desc("<input files>"), cat(DsymCategory));
42 static opt<std::string>
44 desc("Specify the output file. default: <input file>.dwarf"),
45 value_desc("filename"), cat(DsymCategory));
47 static opt<std::string> OsoPrependPath(
49 desc("Specify a directory to prepend to the paths of object files."),
50 value_desc("path"), cat(DsymCategory));
52 static opt<bool> DumpStab(
54 desc("Dumps the symbol table found in executable or object file(s) and\n"
56 init(false), cat(DsymCategory));
57 static alias DumpStabA("s", desc("Alias for --symtab"), aliasopt(DumpStab));
59 static opt<bool> FlatOut("flat",
60 desc("Produce a flat dSYM file (not a bundle)."),
61 init(false), cat(DsymCategory));
62 static alias FlatOutA("f", desc("Alias for --flat"), aliasopt(FlatOut));
64 static opt<bool> Verbose("verbose", desc("Verbosity level"), init(false),
69 desc("Do the link in memory, but do not emit the result file."),
70 init(false), cat(DsymCategory));
72 static list<std::string> ArchFlags(
74 desc("Link DWARF debug information only for specified CPU architecture\n"
75 "types. This option can be specified multiple times, once for each\n"
76 "desired architecture. All cpu architectures will be linked by\n"
78 ZeroOrMore, cat(DsymCategory));
82 desc("Do not use ODR (One Definition Rule) for type uniquing."),
83 init(false), cat(DsymCategory));
85 static opt<bool> DumpDebugMap(
87 desc("Parse and dump the debug map to standard output. Not DWARF link "
89 init(false), cat(DsymCategory));
91 static opt<bool> InputIsYAMLDebugMap(
92 "y", desc("Treat the input file is a YAML debug map rather than a binary."),
93 init(false), cat(DsymCategory));
96 static bool createPlistFile(llvm::StringRef BundleRoot) {
100 // Create plist file to write to.
101 llvm::SmallString<128> InfoPlist(BundleRoot);
102 llvm::sys::path::append(InfoPlist, "Contents/Info.plist");
104 llvm::raw_fd_ostream PL(InfoPlist, EC, llvm::sys::fs::F_Text);
106 llvm::errs() << "error: cannot create plist file " << InfoPlist << ": "
107 << EC.message() << '\n';
111 // FIXME: Use CoreFoundation to get executable bundle info. Use
112 // dummy values for now.
113 std::string bundleVersionStr = "1", bundleShortVersionStr = "1.0",
116 llvm::StringRef BundleID = *llvm::sys::path::rbegin(BundleRoot);
117 if (llvm::sys::path::extension(BundleRoot) == ".dSYM")
118 bundleIDStr = llvm::sys::path::stem(BundleID);
120 bundleIDStr = BundleID;
122 // Print out information to the plist file.
123 PL << "<?xml version=\"1.0\" encoding=\"UTF-8\"\?>\n"
124 << "<!DOCTYPE plist PUBLIC \"-//Apple Computer//DTD PLIST 1.0//EN\" "
125 << "\"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n"
126 << "<plist version=\"1.0\">\n"
128 << "\t\t<key>CFBundleDevelopmentRegion</key>\n"
129 << "\t\t<string>English</string>\n"
130 << "\t\t<key>CFBundleIdentifier</key>\n"
131 << "\t\t<string>com.apple.xcode.dsym." << bundleIDStr << "</string>\n"
132 << "\t\t<key>CFBundleInfoDictionaryVersion</key>\n"
133 << "\t\t<string>6.0</string>\n"
134 << "\t\t<key>CFBundlePackageType</key>\n"
135 << "\t\t<string>dSYM</string>\n"
136 << "\t\t<key>CFBundleSignature</key>\n"
137 << "\t\t<string>\?\?\?\?</string>\n"
138 << "\t\t<key>CFBundleShortVersionString</key>\n"
139 << "\t\t<string>" << bundleShortVersionStr << "</string>\n"
140 << "\t\t<key>CFBundleVersion</key>\n"
141 << "\t\t<string>" << bundleVersionStr << "</string>\n"
149 static bool createBundleDir(llvm::StringRef BundleBase) {
153 llvm::SmallString<128> Bundle(BundleBase);
154 llvm::sys::path::append(Bundle, "Contents", "Resources", "DWARF");
155 if (std::error_code EC = create_directories(Bundle.str(), true,
156 llvm::sys::fs::perms::all_all)) {
157 llvm::errs() << "error: cannot create directory " << Bundle << ": "
158 << EC.message() << "\n";
164 static std::error_code getUniqueFile(const llvm::Twine &Model, int &ResultFD,
165 llvm::SmallVectorImpl<char> &ResultPath) {
166 // If in NoOutput mode, use the createUniqueFile variant that
167 // doesn't open the file but still generates a somewhat unique
168 // name. In the real usage scenario, we'll want to ensure that the
169 // file is trully unique, and creating it is the only way to achieve
172 return llvm::sys::fs::createUniqueFile(Model, ResultPath);
173 return llvm::sys::fs::createUniqueFile(Model, ResultFD, ResultPath);
176 static std::string getOutputFileName(llvm::StringRef InputFile,
177 bool TempFile = false) {
179 llvm::StringRef Basename =
180 OutputFileOpt.empty() ? InputFile : llvm::StringRef(OutputFileOpt);
181 llvm::Twine OutputFile = Basename + ".tmp%%%%%%.dwarf";
183 llvm::SmallString<128> UniqueFile;
184 if (auto EC = getUniqueFile(OutputFile, FD, UniqueFile)) {
185 llvm::errs() << "error: failed to create temporary outfile '"
186 << OutputFile << "': " << EC.message() << '\n';
189 llvm::sys::RemoveFileOnSignal(UniqueFile);
191 // Close the file immediately. We know it is unique. It will be
192 // reopened and written to later.
193 llvm::raw_fd_ostream CloseImmediately(FD, true /* shouldClose */, true);
195 return UniqueFile.str();
199 // If a flat dSYM has been requested, things are pretty simple.
200 if (OutputFileOpt.empty()) {
201 if (InputFile == "-")
202 return "a.out.dwarf";
203 return (InputFile + ".dwarf").str();
206 return OutputFileOpt;
209 // We need to create/update a dSYM bundle.
210 // A bundle hierarchy looks like this:
211 // <bundle name>.dSYM/
217 std::string DwarfFile =
218 InputFile == "-" ? llvm::StringRef("a.out") : InputFile;
219 llvm::SmallString<128> BundleDir(OutputFileOpt);
220 if (BundleDir.empty())
221 BundleDir = DwarfFile + ".dSYM";
222 if (!createBundleDir(BundleDir) || !createPlistFile(BundleDir))
225 llvm::sys::path::append(BundleDir, "Contents", "Resources", "DWARF",
226 llvm::sys::path::filename(DwarfFile));
227 return BundleDir.str();
230 void llvm::dsymutil::exitDsymutil(int ExitStatus) {
231 // Cleanup temporary files.
232 llvm::sys::RunInterruptHandlers();
236 int main(int argc, char **argv) {
237 llvm::sys::PrintStackTraceOnErrorSignal();
238 llvm::PrettyStackTraceProgram StackPrinter(argc, argv);
239 llvm::llvm_shutdown_obj Shutdown;
241 void *MainAddr = (void *)(intptr_t)&exitDsymutil;
242 std::string SDKPath = llvm::sys::fs::getMainExecutable(argv[0], MainAddr);
243 SDKPath = llvm::sys::path::parent_path(SDKPath);
245 HideUnrelatedOptions(DsymCategory);
246 llvm::cl::ParseCommandLineOptions(
248 "manipulate archived DWARF debug symbol files.\n\n"
249 "dsymutil links the DWARF debug information found in the object files\n"
250 "for the executable <input file> by using debug symbols information\n"
251 "contained in its symbol table.\n");
257 llvm::cl::PrintVersionMessage();
261 Options.Verbose = Verbose;
262 Options.NoOutput = NoOutput;
263 Options.NoODR = NoODR;
264 Options.PrependPath = OsoPrependPath;
266 llvm::InitializeAllTargetInfos();
267 llvm::InitializeAllTargetMCs();
268 llvm::InitializeAllTargets();
269 llvm::InitializeAllAsmPrinters();
271 if (!FlatOut && OutputFileOpt == "-") {
272 llvm::errs() << "error: cannot emit to standard output without --flat\n";
276 if (InputFiles.size() > 1 && FlatOut && !OutputFileOpt.empty()) {
277 llvm::errs() << "error: cannot use -o with multiple inputs in flat mode\n";
281 for (const auto &Arch : ArchFlags)
282 if (Arch != "*" && Arch != "all" &&
283 !llvm::object::MachOObjectFile::isValidArch(Arch)) {
284 llvm::errs() << "error: Unsupported cpu architecture: '" << Arch << "'\n";
288 for (auto &InputFile : InputFiles) {
289 // Dump the symbol table for each input file and requested arch
291 if (!dumpStab(InputFile, ArchFlags, OsoPrependPath))
296 auto DebugMapPtrsOrErr = parseDebugMap(InputFile, ArchFlags, OsoPrependPath,
297 Verbose, InputIsYAMLDebugMap);
299 if (auto EC = DebugMapPtrsOrErr.getError()) {
300 llvm::errs() << "error: cannot parse the debug map for \"" << InputFile
301 << "\": " << EC.message() << '\n';
305 if (DebugMapPtrsOrErr->empty()) {
306 llvm::errs() << "error: no architecture to link\n";
310 // If there is more than one link to execute, we need to generate
312 bool NeedsTempFiles = !DumpDebugMap && (*DebugMapPtrsOrErr).size() != 1;
313 llvm::SmallVector<MachOUtils::ArchAndFilename, 4> TempFiles;
314 for (auto &Map : *DebugMapPtrsOrErr) {
315 if (Verbose || DumpDebugMap)
316 Map->print(llvm::outs());
321 if (Map->begin() == Map->end())
322 llvm::errs() << "warning: no debug symbols in executable (-arch "
323 << MachOUtils::getArchName(Map->getTriple().getArchName())
326 std::string OutputFile = getOutputFileName(InputFile, NeedsTempFiles);
327 if (OutputFile.empty() || !linkDwarf(OutputFile, *Map, Options))
331 TempFiles.emplace_back(Map->getTriple().getArchName().str(),
335 if (NeedsTempFiles &&
336 !MachOUtils::generateUniversalBinary(
337 TempFiles, getOutputFileName(InputFile), Options, SDKPath))