1 files changed, 84 insertions, 0 deletions
diff --git a/contrib/llvm/lib/DebugInfo/DWARFDebugAranges.h b/contrib/llvm/lib/DebugInfo/DWARFDebugAranges.h
new file mode 100644
index 000000000000..35ad8e53d63d
--- /dev/null
+++ b/contrib/llvm/lib/DebugInfo/DWARFDebugAranges.h
@@ -0,0 +1,84 @@
+//===-- DWARFDebugAranges.h -------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_DWARFDEBUGARANGES_H
+#define LLVM_DEBUGINFO_DWARFDEBUGARANGES_H
+
+#include "DWARFDebugArangeSet.h"
+#include "llvm/ADT/DenseSet.h"
+#include <list>
+
+namespace llvm {
+
+class DWARFContext;
+
+class DWARFDebugAranges {
+public:
+  void clear() {
+    Aranges.clear();
+    ParsedCUOffsets.clear();
+  }
+
+  void generate(DWARFContext *CTX);
+
+  // Use appendRange multiple times and then call sortAndMinimize.
+  void appendRange(uint32_t CUOffset, uint64_t LowPC, uint64_t HighPC);
+
+  uint32_t findAddress(uint64_t Address) const;
+
+private:
+  void extract(DataExtractor DebugArangesData);
+  void sortAndMinimize();
+
+  struct Range {
+    explicit Range(uint64_t LowPC = -1ULL, uint64_t HighPC = -1ULL,
+                   uint32_t CUOffset = -1U)
+      : LowPC(LowPC), Length(HighPC - LowPC), CUOffset(CUOffset) {}
+
+    void setHighPC(uint64_t HighPC) {
+      if (HighPC == -1ULL || HighPC <= LowPC)
+        Length = 0;
+      else
+        Length = HighPC - LowPC;
+    }
+    uint64_t HighPC() const {
+      if (Length)
+        return LowPC + Length;
+      return -1ULL;
+    }
+    bool containsAddress(uint64_t Address) const {
+      return LowPC <= Address && Address < HighPC();
+    }
+
+    bool operator <(const Range &other) const {
+      return LowPC < other.LowPC;
+    }
+
+    static bool SortedOverlapCheck(const Range &Left, const Range &Right) {
+      if (Left.CUOffset != Right.CUOffset)
+        return false;
+      return Left.HighPC() >= Right.LowPC;
+    }
+
+    uint64_t LowPC; // Start of address range.
+    uint32_t Length; // End of address range (not including this address).
+    uint32_t CUOffset; // Offset of the compile unit or die.
+  };
+
+  typedef std::vector<Range>              RangeColl;
+  typedef RangeColl::const_iterator       RangeCollIterator;
+  typedef DenseSet<uint32_t>              ParsedCUOffsetColl;
+
+  RangeColl Aranges;
+  ParsedCUOffsetColl ParsedCUOffsets;
+};
+
+}
+
+#endif