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_Types, "types", ".debug_types"),
66 clEnumValN(DIDT_TypesDwo, "types.dwo", ".debug_types.dwo"),
67 clEnumValN(DIDT_Line, "line", ".debug_line"),
68 clEnumValN(DIDT_Loc, "loc", ".debug_loc"),
69 clEnumValN(DIDT_Frames, "frames", ".debug_frame"),
70 clEnumValN(DIDT_Ranges, "ranges", ".debug_ranges"),
71 clEnumValN(DIDT_Pubnames, "pubnames", ".debug_pubnames"),
72 clEnumValN(DIDT_Pubtypes, "pubtypes", ".debug_pubtypes"),
73 clEnumValN(DIDT_GnuPubnames, "gnu_pubnames", ".debug_gnu_pubnames"),
74 clEnumValN(DIDT_GnuPubtypes, "gnu_pubtypes", ".debug_gnu_pubtypes"),
75 clEnumValN(DIDT_Str, "str", ".debug_str"),
76 clEnumValN(DIDT_StrDwo, "str.dwo", ".debug_str.dwo"),
77 clEnumValN(DIDT_StrOffsetsDwo, "str_offsets.dwo", ".debug_str_offsets.dwo"),
80 static void PrintDILineInfo(DILineInfo dli) {
82 outs() << (dli.getFunctionName() ? dli.getFunctionName() : "<unknown>")
84 outs() << (dli.getFileName() ? dli.getFileName() : "<unknown>") << ':'
85 << dli.getLine() << ':' << dli.getColumn() << '\n';
88 static void DumpInput(const StringRef &Filename) {
89 OwningPtr<MemoryBuffer> Buff;
91 if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
92 errs() << Filename << ": " << ec.message() << "\n";
96 OwningPtr<ObjectFile> Obj(ObjectFile::createObjectFile(Buff.take()));
98 errs() << Filename << ": Unknown object file format\n";
102 OwningPtr<DIContext> DICtx(DIContext::getDWARFContext(Obj.get()));
104 if (Address == -1ULL) {
106 << ":\tfile format " << Obj->getFileFormatName() << "\n\n";
107 // Dump the complete DWARF structure.
108 DICtx->dump(outs(), DumpType);
110 // Print line info for the specified address.
111 int SpecFlags = DILineInfoSpecifier::FileLineInfo |
112 DILineInfoSpecifier::AbsoluteFilePath;
114 SpecFlags |= DILineInfoSpecifier::FunctionName;
116 DIInliningInfo InliningInfo =
117 DICtx->getInliningInfoForAddress(Address, SpecFlags);
118 uint32_t n = InliningInfo.getNumberOfFrames();
120 // Print one empty debug line info in any case.
121 PrintDILineInfo(DILineInfo());
123 for (uint32_t i = 0; i < n; i++) {
124 DILineInfo dli = InliningInfo.getFrame(i);
125 PrintDILineInfo(dli);
129 DILineInfo dli = DICtx->getLineInfoForAddress(Address, SpecFlags);
130 PrintDILineInfo(dli);
135 int main(int argc, char **argv) {
136 // Print a stack trace if we signal out.
137 sys::PrintStackTraceOnErrorSignal();
138 PrettyStackTraceProgram X(argc, argv);
139 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
141 cl::ParseCommandLineOptions(argc, argv, "llvm dwarf dumper\n");
143 // Defaults to a.out if no filenames specified.
144 if (InputFilenames.size() == 0)
145 InputFilenames.push_back("a.out");
147 std::for_each(InputFilenames.begin(), InputFilenames.end(), DumpInput);