1 files changed, 47 insertions, 0 deletions
diff --git a/include/lld/Common/DWARF.h b/include/lld/Common/DWARF.h
new file mode 100644
index 000000000..f0d3d2fbd
--- /dev/null
+++ b/include/lld/Common/DWARF.h
@@ -0,0 +1,47 @@
+//===- DWARF.h --------------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLD_DWARF_H
+#define LLD_DWARF_H
+
+#include "lld/Common/LLVM.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/DebugInfo/DWARF/DWARFContext.h"
+#include "llvm/DebugInfo/DWARF/DWARFDebugLine.h"
+#include <memory>
+#include <string>
+
+namespace llvm {
+struct DILineInfo;
+} // namespace llvm
+
+namespace lld {
+
+class DWARFCache {
+public:
+  DWARFCache(std::unique_ptr<llvm::DWARFContext> dwarf);
+  llvm::Optional<llvm::DILineInfo> getDILineInfo(uint64_t offset,
+                                                 uint64_t sectionIndex);
+  llvm::Optional<std::pair<std::string, unsigned>>
+  getVariableLoc(StringRef name);
+
+private:
+  std::unique_ptr<llvm::DWARFContext> dwarf;
+  std::vector<const llvm::DWARFDebugLine::LineTable *> lineTables;
+  struct VarLoc {
+    const llvm::DWARFDebugLine::LineTable *lt;
+    unsigned file;
+    unsigned line;
+  };
+  llvm::DenseMap<StringRef, VarLoc> variableLoc;
+};
+
+} // namespace lld
+
+#endif