X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FDebugInfo%2FDWARFDebugRangeList.h;h=4ee3bdad329999d434ba12568f6c5eb3882216f7;hb=be63d589633bbfa068b923c60eaaeee1b27647c5;hp=b8d334f7ba64bce37e76442423730264db35599d;hpb=eceb5b99777ba944a0ae3748a0371e9a3aa94d56;p=oota-llvm.git

diff --git a/lib/DebugInfo/DWARFDebugRangeList.h b/lib/DebugInfo/DWARFDebugRangeList.h
index b8d334f7ba6..4ee3bdad329 100644
--- a/lib/DebugInfo/DWARFDebugRangeList.h
+++ b/lib/DebugInfo/DWARFDebugRangeList.h
@@ -7,8 +7,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_DEBUGINFO_DWARFDEBUGRANGELIST_H
-#define LLVM_DEBUGINFO_DWARFDEBUGRANGELIST_H
+#ifndef LLVM_LIB_DEBUGINFO_DWARFDEBUGRANGELIST_H
+#define LLVM_LIB_DEBUGINFO_DWARFDEBUGRANGELIST_H
 
 #include "llvm/Support/DataExtractor.h"
 #include <vector>
@@ -17,6 +17,9 @@ namespace llvm {
 
 class raw_ostream;
 
+/// DWARFAddressRangesVector - represents a set of absolute address ranges.
+typedef std::vector<std::pair<uint64_t, uint64_t>> DWARFAddressRangesVector;
+
 class DWARFDebugRangeList {
 public:
   struct RangeListEntry {
@@ -31,6 +34,25 @@ public:
     // address past the end of the address range. The ending address must
     // be greater than or equal to the beginning address.
     uint64_t EndAddress;
+    // The end of any given range list is marked by an end of list entry,
+    // which consists of a 0 for the beginning address offset
+    // and a 0 for the ending address offset.
+    bool isEndOfListEntry() const {
+      return (StartAddress == 0) && (EndAddress == 0);
+    }
+    // A base address selection entry consists of:
+    // 1. The value of the largest representable address offset
+    // (for example, 0xffffffff when the size of an address is 32 bits).
+    // 2. An address, which defines the appropriate base address for
+    // use in interpreting the beginning and ending address offsets of
+    // subsequent entries of the location list.
+    bool isBaseAddressSelectionEntry(uint8_t AddressSize) const {
+      assert(AddressSize == 4 || AddressSize == 8);
+      if (AddressSize == 4)
+        return StartAddress == -1U;
+      else
+        return StartAddress == -1ULL;
+    }
   };
 
 private:
@@ -44,6 +66,10 @@ public:
   void clear();
   void dump(raw_ostream &OS) const;
   bool extract(DataExtractor data, uint32_t *offset_ptr);
+  /// getAbsoluteRanges - Returns absolute address ranges defined by this range
+  /// list. Has to be passed base address of the compile unit referencing this
+  /// range list.
+  DWARFAddressRangesVector getAbsoluteRanges(uint64_t BaseAddress) const;
 };
 
 }  // namespace llvm