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/Triple.h"
16 #include "llvm/ADT/STLExtras.h"
17 #include "llvm/Object/ObjectFile.h"
18 #include "llvm/DebugInfo/DIContext.h"
19 #include "llvm/Support/CommandLine.h"
20 #include "llvm/Support/Debug.h"
21 #include "llvm/Support/Format.h"
22 #include "llvm/Support/ManagedStatic.h"
23 #include "llvm/Support/MemoryBuffer.h"
24 #include "llvm/Support/MemoryObject.h"
25 #include "llvm/Support/PrettyStackTrace.h"
26 #include "llvm/Support/Signals.h"
27 #include "llvm/Support/raw_ostream.h"
28 #include "llvm/Support/system_error.h"
32 using namespace object;
34 static cl::list<std::string>
35 InputFilenames(cl::Positional, cl::desc("<input object files>"),
38 static cl::opt<unsigned long long>
39 Address("address", cl::init(-1ULL),
40 cl::desc("Print line information for a given address"));
43 PrintFunctions("functions", cl::init(false),
44 cl::desc("Print function names as well as line information "
45 "for a given address"));
47 static void DumpInput(const StringRef &Filename) {
48 OwningPtr<MemoryBuffer> Buff;
50 if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
51 errs() << Filename << ": " << ec.message() << "\n";
55 OwningPtr<ObjectFile> Obj(ObjectFile::createObjectFile(Buff.take()));
57 StringRef DebugInfoSection;
58 StringRef DebugAbbrevSection;
59 StringRef DebugLineSection;
60 StringRef DebugArangesSection;
61 StringRef DebugStringSection;
64 for (section_iterator i = Obj->begin_sections(),
65 e = Obj->end_sections();
66 i != e; i.increment(ec)) {
72 if (name.startswith("__DWARF,"))
73 name = name.substr(8); // Skip "__DWARF," prefix.
74 name = name.substr(name.find_first_not_of("._")); // Skip . and _ prefixes.
75 if (name == "debug_info")
76 DebugInfoSection = data;
77 else if (name == "debug_abbrev")
78 DebugAbbrevSection = data;
79 else if (name == "debug_line")
80 DebugLineSection = data;
81 else if (name == "debug_aranges")
82 DebugArangesSection = data;
83 else if (name == "debug_str")
84 DebugStringSection = data;
87 OwningPtr<DIContext> dictx(DIContext::getDWARFContext(/*FIXME*/true,
93 if (Address == -1ULL) {
95 << ":\tfile format " << Obj->getFileFormatName() << "\n\n";
96 // Dump the complete DWARF structure.
99 // Print line info for the specified address.
100 int spec_flags = DILineInfoSpecifier::FileLineInfo |
101 DILineInfoSpecifier::AbsoluteFilePath;
103 spec_flags |= DILineInfoSpecifier::FunctionName;
104 DILineInfo dli = dictx->getLineInfoForAddress(Address, spec_flags);
106 outs() << (dli.getFunctionName() ? dli.getFunctionName() : "<unknown>")
108 outs() << (dli.getFileName() ? dli.getFileName() : "<unknown>") << ':'
109 << dli.getLine() << ':' << dli.getColumn() << '\n';
113 int main(int argc, char **argv) {
114 // Print a stack trace if we signal out.
115 sys::PrintStackTraceOnErrorSignal();
116 PrettyStackTraceProgram X(argc, argv);
117 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
119 cl::ParseCommandLineOptions(argc, argv, "llvm dwarf dumper\n");
121 // Defaults to a.out if no filenames specified.
122 if (InputFilenames.size() == 0)
123 InputFilenames.push_back("a.out");
125 std::for_each(InputFilenames.begin(), InputFilenames.end(), DumpInput);