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 cl::opt<DIDumpType>
56 DumpType("debug-dump", cl::init(DIDT_All),
57 cl::desc("Dump of debug sections:"),
59 clEnumValN(DIDT_All, "all", "Dump all debug sections"),
60 clEnumValN(DIDT_Abbrev, "abbrev", ".debug_abbrev"),
61 clEnumValN(DIDT_AbbrevDwo, "abbrev.dwo", ".debug_abbrev.dwo"),
62 clEnumValN(DIDT_Aranges, "aranges", ".debug_aranges"),
63 clEnumValN(DIDT_Info, "info", ".debug_info"),
64 clEnumValN(DIDT_InfoDwo, "info.dwo", ".debug_info.dwo"),
65 clEnumValN(DIDT_Line, "line", ".debug_line"),
66 clEnumValN(DIDT_Loc, "loc", ".debug_loc"),
67 clEnumValN(DIDT_Frames, "frames", ".debug_frame"),
68 clEnumValN(DIDT_Ranges, "ranges", ".debug_ranges"),
69 clEnumValN(DIDT_Pubnames, "pubnames", ".debug_pubnames"),
70 clEnumValN(DIDT_Pubtypes, "pubtypes", ".debug_pubtypes"),
71 clEnumValN(DIDT_Str, "str", ".debug_str"),
72 clEnumValN(DIDT_StrDwo, "str.dwo", ".debug_str.dwo"),
73 clEnumValN(DIDT_StrOffsetsDwo, "str_offsets.dwo", ".debug_str_offsets.dwo"),
76 static void PrintDILineInfo(DILineInfo dli) {
78 outs() << (dli.getFunctionName() ? dli.getFunctionName() : "<unknown>")
80 outs() << (dli.getFileName() ? dli.getFileName() : "<unknown>") << ':'
81 << dli.getLine() << ':' << dli.getColumn() << '\n';
84 static void DumpInput(const StringRef &Filename) {
85 OwningPtr<MemoryBuffer> Buff;
87 if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
88 errs() << Filename << ": " << ec.message() << "\n";
92 OwningPtr<ObjectFile> Obj(ObjectFile::createObjectFile(Buff.take()));
94 errs() << Filename << ": Unknown object file format\n";
98 OwningPtr<DIContext> DICtx(DIContext::getDWARFContext(Obj.get()));
100 if (Address == -1ULL) {
102 << ":\tfile format " << Obj->getFileFormatName() << "\n\n";
103 // Dump the complete DWARF structure.
104 DICtx->dump(outs(), DumpType);
106 // Print line info for the specified address.
107 int SpecFlags = DILineInfoSpecifier::FileLineInfo |
108 DILineInfoSpecifier::AbsoluteFilePath;
110 SpecFlags |= DILineInfoSpecifier::FunctionName;
112 DIInliningInfo InliningInfo =
113 DICtx->getInliningInfoForAddress(Address, SpecFlags);
114 uint32_t n = InliningInfo.getNumberOfFrames();
116 // Print one empty debug line info in any case.
117 PrintDILineInfo(DILineInfo());
119 for (uint32_t i = 0; i < n; i++) {
120 DILineInfo dli = InliningInfo.getFrame(i);
121 PrintDILineInfo(dli);
125 DILineInfo dli = DICtx->getLineInfoForAddress(Address, SpecFlags);
126 PrintDILineInfo(dli);
131 int main(int argc, char **argv) {
132 // Print a stack trace if we signal out.
133 sys::PrintStackTraceOnErrorSignal();
134 PrettyStackTraceProgram X(argc, argv);
135 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
137 cl::ParseCommandLineOptions(argc, argv, "llvm dwarf dumper\n");
139 // Defaults to a.out if no filenames specified.
140 if (InputFilenames.size() == 0)
141 InputFilenames.push_back("a.out");
143 std::for_each(InputFilenames.begin(), InputFilenames.end(), DumpInput);