Vendor import of llvm release_30 branch r142614:

http://llvm.org/svn/llvm-project/llvm/branches/release_30@142614

1 files changed, 116 insertions, 0 deletions

diff --git a/tools/llvm-dwarfdump/llvm-dwarfdump.cpp b/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
new file mode 100644
index 0000000..ca0493d
--- /dev/null
+++ b/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
@@ -0,0 +1,116 @@
+//===-- llvm-dwarfdump.cpp - Debug info dumping utility for llvm -----------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This program is a utility that works like "dwarfdump".
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/Object/ObjectFile.h"
+#include "llvm/DebugInfo/DIContext.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/MemoryObject.h"
+#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/system_error.h"
+#include <algorithm>
+#include <cstring>
+using namespace llvm;
+using namespace object;
+
+static cl::list<std::string>
+InputFilenames(cl::Positional, cl::desc("<input object files>"),
+               cl::ZeroOrMore);
+
+static cl::opt<unsigned long long>
+Address("address", cl::init(-1ULL),
+        cl::desc("Print line information for a given address"));
+
+static void DumpInput(const StringRef &Filename) {
+  OwningPtr<MemoryBuffer> Buff;
+
+  if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
+    errs() << Filename << ": " << ec.message() << "\n";
+    return;
+  }
+
+  OwningPtr<ObjectFile> Obj(ObjectFile::createObjectFile(Buff.take()));
+
+  StringRef DebugInfoSection;
+  StringRef DebugAbbrevSection;
+  StringRef DebugLineSection;
+  StringRef DebugArangesSection;
+  StringRef DebugStringSection;
+
+  error_code ec;
+  for (section_iterator i = Obj->begin_sections(),
+                        e = Obj->end_sections();
+                        i != e; i.increment(ec)) {
+    StringRef name;
+    i->getName(name);
+    StringRef data;
+    i->getContents(data);
+
+    if (name.startswith("__DWARF,"))
+      name = name.substr(8); // Skip "__DWARF," prefix.
+    name = name.substr(name.find_first_not_of("._")); // Skip . and _ prefixes.
+    if (name == "debug_info")
+      DebugInfoSection = data;
+    else if (name == "debug_abbrev")
+      DebugAbbrevSection = data;
+    else if (name == "debug_line")
+      DebugLineSection = data;
+    else if (name == "debug_aranges")
+      DebugArangesSection = data;
+    else if (name == "debug_str")
+      DebugStringSection = data;
+  }
+
+  OwningPtr<DIContext> dictx(DIContext::getDWARFContext(/*FIXME*/true,
+                                                        DebugInfoSection,
+                                                        DebugAbbrevSection,
+                                                        DebugArangesSection,
+                                                        DebugLineSection,
+                                                        DebugStringSection));
+  if (Address == -1ULL) {
+    outs() << Filename
+           << ":\tfile format " << Obj->getFileFormatName() << "\n\n";
+    // Dump the complete DWARF structure.
+    dictx->dump(outs());
+  } else {
+    // Print line info for the specified address.
+    DILineInfo dli = dictx->getLineInfoForAddress(Address);
+    outs() << (dli.getFileName() ? dli.getFileName() : "<unknown>") << ':'
+           << dli.getLine() << ':' << dli.getColumn() << '\n';
+  }
+}
+
+int main(int argc, char **argv) {
+  // Print a stack trace if we signal out.
+  sys::PrintStackTraceOnErrorSignal();
+  PrettyStackTraceProgram X(argc, argv);
+  llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
+
+  cl::ParseCommandLineOptions(argc, argv, "llvm dwarf dumper\n");
+
+  // Defaults to a.out if no filenames specified.
+  if (InputFilenames.size() == 0)
+    InputFilenames.push_back("a.out");
+
+  std::for_each(InputFilenames.begin(), InputFilenames.end(), DumpInput);
+
+  return 0;
+}