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This introduces a new library to LLVM: libDebugInfo. It will provide debug information parsing to LLVM. Much of the design and some of the code is taken from the LLDB project. It also contains an llvm-dwarfdump tool that can dump the abbrevs and DIEs from an object file. It can be used to write tests for DWARF input and output easily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139627 91177308-0d34-0410-b5e6-96231b3b80d8
94 lines
2.9 KiB
C++
94 lines
2.9 KiB
C++
//===-- llvm-dwarfdump.cpp - Debug info dumping utility for llvm -----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This program is a utility that works like "dwarfdump".
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/OwningPtr.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Object/ObjectFile.h"
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#include "llvm/DebugInfo/DIContext.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/MemoryObject.h"
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#include "llvm/Support/PrettyStackTrace.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Support/system_error.h"
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#include <algorithm>
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#include <cstring>
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using namespace llvm;
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using namespace object;
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static cl::list<std::string>
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InputFilenames(cl::Positional, cl::desc("<input object files>"),
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cl::ZeroOrMore);
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static void DumpInput(const StringRef &Filename) {
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OwningPtr<MemoryBuffer> Buff;
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if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
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errs() << Filename << ": " << ec.message() << "\n";
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return;
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}
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OwningPtr<ObjectFile> Obj(ObjectFile::createObjectFile(Buff.take()));
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outs() << '\n';
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outs() << Filename
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<< ":\tfile format " << Obj->getFileFormatName() << "\n\n";
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StringRef DebugInfoSection;
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StringRef DebugAbbrevSection;
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StringRef DebugLineSection;
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error_code ec;
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for (ObjectFile::section_iterator i = Obj->begin_sections(),
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e = Obj->end_sections();
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i != e; i.increment(ec)) {
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StringRef name;
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i->getName(name);
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StringRef data;
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i->getContents(data);
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if (name.endswith("debug_info"))
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DebugInfoSection = data;
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else if (name.endswith("debug_abbrev"))
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DebugAbbrevSection = data;
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else if (name.endswith("debug_line"))
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DebugLineSection = data;
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}
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OwningPtr<DIContext> dictx(DIContext::getDWARFContext(/*FIXME*/true,
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DebugInfoSection,
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DebugAbbrevSection));
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dictx->dump(outs());
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}
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int main(int argc, char **argv) {
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// Print a stack trace if we signal out.
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sys::PrintStackTraceOnErrorSignal();
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PrettyStackTraceProgram X(argc, argv);
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llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
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cl::ParseCommandLineOptions(argc, argv, "llvm dwarf dumper\n");
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// Defaults to a.out if no filenames specified.
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if (InputFilenames.size() == 0)
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InputFilenames.push_back("a.out");
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std::for_each(InputFilenames.begin(), InputFilenames.end(), DumpInput);
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return 0;
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}
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