1 //===-- llvm-dwarfdump.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 works like "dwarfdump".
12 //===----------------------------------------------------------------------===//
14 #include "llvm/ADT/OwningPtr.h"
15 #include "llvm/ADT/STLExtras.h"
16 #include "llvm/ADT/Triple.h"
17 #include "llvm/DebugInfo/DIContext.h"
18 #include "llvm/Object/ObjectFile.h"
19 #include "llvm/Object/RelocVisitor.h"
20 #include "llvm/Support/CommandLine.h"
21 #include "llvm/Support/Debug.h"
22 #include "llvm/Support/Format.h"
23 #include "llvm/Support/ManagedStatic.h"
24 #include "llvm/Support/MemoryBuffer.h"
25 #include "llvm/Support/MemoryObject.h"
26 #include "llvm/Support/PrettyStackTrace.h"
27 #include "llvm/Support/Signals.h"
28 #include "llvm/Support/raw_ostream.h"
29 #include "llvm/Support/system_error.h"
36 using namespace object;
38 static cl::list<std::string>
39 InputFilenames(cl::Positional, cl::desc("<input object files>"),
42 static cl::opt<unsigned long long>
43 Address("address", cl::init(-1ULL),
44 cl::desc("Print line information for a given address"));
47 PrintFunctions("functions", cl::init(false),
48 cl::desc("Print function names as well as line information "
49 "for a given address"));
52 PrintInlining("inlining", cl::init(false),
53 cl::desc("Print all inlined frames for a given address"));
55 static void PrintDILineInfo(DILineInfo dli) {
57 outs() << (dli.getFunctionName() ? dli.getFunctionName() : "<unknown>")
59 outs() << (dli.getFileName() ? dli.getFileName() : "<unknown>") << ':'
60 << dli.getLine() << ':' << dli.getColumn() << '\n';
63 static void DumpInput(const StringRef &Filename) {
64 OwningPtr<MemoryBuffer> Buff;
66 if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
67 errs() << Filename << ": " << ec.message() << "\n";
71 OwningPtr<ObjectFile> Obj(ObjectFile::createObjectFile(Buff.take()));
72 OwningPtr<DIContext> DICtx(DIContext::getDWARFContext(Obj.get()));
74 if (Address == -1ULL) {
76 << ":\tfile format " << Obj->getFileFormatName() << "\n\n";
77 // Dump the complete DWARF structure.
80 // Print line info for the specified address.
81 int SpecFlags = DILineInfoSpecifier::FileLineInfo |
82 DILineInfoSpecifier::AbsoluteFilePath;
84 SpecFlags |= DILineInfoSpecifier::FunctionName;
86 DIInliningInfo InliningInfo =
87 DICtx->getInliningInfoForAddress(Address, SpecFlags);
88 uint32_t n = InliningInfo.getNumberOfFrames();
90 // Print one empty debug line info in any case.
91 PrintDILineInfo(DILineInfo());
93 for (uint32_t i = 0; i < n; i++) {
94 DILineInfo dli = InliningInfo.getFrame(i);
99 DILineInfo dli = DICtx->getLineInfoForAddress(Address, SpecFlags);
100 PrintDILineInfo(dli);
105 int main(int argc, char **argv) {
106 // Print a stack trace if we signal out.
107 sys::PrintStackTraceOnErrorSignal();
108 PrettyStackTraceProgram X(argc, argv);
109 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
111 cl::ParseCommandLineOptions(argc, argv, "llvm dwarf dumper\n");
113 // Defaults to a.out if no filenames specified.
114 if (InputFilenames.size() == 0)
115 InputFilenames.push_back("a.out");
117 std::for_each(InputFilenames.begin(), InputFilenames.end(), DumpInput);