1 files changed, 101 insertions, 0 deletions
diff --git a/contrib/llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp b/contrib/llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp
new file mode 100644
index 0000000..a9dee7a
--- /dev/null
+++ b/contrib/llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp
@@ -0,0 +1,101 @@
+//===- lib/DebugInfo/Symbolize/DIPrinter.cpp ------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the DIPrinter class, which is responsible for printing
+// structures defined in DebugInfo/DIContext.h
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/Symbolize/DIPrinter.h"
+
+#include "llvm/DebugInfo/DIContext.h"
+#include "llvm/Support/LineIterator.h"
+
+namespace llvm {
+namespace symbolize {
+
+// By default, DILineInfo contains "<invalid>" for function/filename it
+// cannot fetch. We replace it to "??" to make our output closer to addr2line.
+static const char kDILineInfoBadString[] = "<invalid>";
+static const char kBadString[] = "??";
+
+// Prints source code around in the FileName the Line.
+void DIPrinter::printContext(std::string FileName, int64_t Line) {
+  if (PrintSourceContext <= 0)
+    return;
+
+  ErrorOr<std::unique_ptr<MemoryBuffer>> BufOrErr =
+      MemoryBuffer::getFile(FileName);
+  if (!BufOrErr)
+    return;
+
+  std::unique_ptr<MemoryBuffer> Buf = std::move(BufOrErr.get());
+  int64_t FirstLine =
+      std::max(static_cast<int64_t>(1), Line - PrintSourceContext / 2);
+  int64_t LastLine = FirstLine + PrintSourceContext;
+  size_t MaxLineNumberWidth = std::ceil(std::log10(LastLine));
+
+  for (line_iterator I = line_iterator(*Buf, false);
+       !I.is_at_eof() && I.line_number() <= LastLine; ++I) {
+    int64_t L = I.line_number();
+    if (L >= FirstLine && L <= LastLine) {
+      OS << format_decimal(L, MaxLineNumberWidth);
+      if (L == Line)
+        OS << " >: ";
+      else
+        OS << "  : ";
+      OS << *I << "\n";
+    }
+  }
+}
+
+void DIPrinter::print(const DILineInfo &Info, bool Inlined) {
+  if (PrintFunctionNames) {
+    std::string FunctionName = Info.FunctionName;
+    if (FunctionName == kDILineInfoBadString)
+      FunctionName = kBadString;
+
+    StringRef Delimiter = (PrintPretty == true) ? " at " : "\n";
+    StringRef Prefix = (PrintPretty && Inlined) ? " (inlined by) " : "";
+    OS << Prefix << FunctionName << Delimiter;
+  }
+  std::string Filename = Info.FileName;
+  if (Filename == kDILineInfoBadString)
+    Filename = kBadString;
+  OS << Filename << ":" << Info.Line << ":" << Info.Column << "\n";
+  printContext(Filename, Info.Line);
+}
+
+DIPrinter &DIPrinter::operator<<(const DILineInfo &Info) {
+  print(Info, false);
+  return *this;
+}
+
+DIPrinter &DIPrinter::operator<<(const DIInliningInfo &Info) {
+  uint32_t FramesNum = Info.getNumberOfFrames();
+  if (FramesNum == 0) {
+    print(DILineInfo(), false);
+    return *this;
+  }
+  for (uint32_t i = 0; i < FramesNum; i++)
+    print(Info.getFrame(i), i > 0);
+  return *this;
+}
+
+DIPrinter &DIPrinter::operator<<(const DIGlobal &Global) {
+  std::string Name = Global.Name;
+  if (Name == kDILineInfoBadString)
+    Name = kBadString;
+  OS << Name << "\n";
+  OS << Global.Start << " " << Global.Size << "\n";
+  return *this;
+}
+
+}
+}