1 files changed, 67 insertions, 25 deletions

diff --git a/lib/DebugInfo/DWARFContext.h b/lib/DebugInfo/DWARFContext.h
index 7633997..687ff93 100644
--- a/lib/DebugInfo/DWARFContext.h
+++ b/lib/DebugInfo/DWARFContext.h
@@ -14,9 +14,9 @@
 #include "DWARFDebugAranges.h"
 #include "DWARFDebugLine.h"
 #include "DWARFDebugRangeList.h"
-#include "llvm/DebugInfo/DIContext.h"
 #include "llvm/ADT/OwningPtr.h"
 #include "llvm/ADT/SmallVector.h"
+#include "llvm/DebugInfo/DIContext.h"
 
 namespace llvm {
 
@@ -25,28 +25,42 @@ namespace llvm {
 /// information parsing. The actual data is supplied through pure virtual
 /// methods that a concrete implementation provides.
 class DWARFContext : public DIContext {
-  bool IsLittleEndian;
-
   SmallVector<DWARFCompileUnit, 1> CUs;
   OwningPtr<DWARFDebugAbbrev> Abbrev;
   OwningPtr<DWARFDebugAranges> Aranges;
   OwningPtr<DWARFDebugLine> Line;
 
-  DWARFContext(DWARFContext &); // = delete
-  DWARFContext &operator=(DWARFContext &); // = delete
+  SmallVector<DWARFCompileUnit, 1> DWOCUs;
+  OwningPtr<DWARFDebugAbbrev> AbbrevDWO;
+
+  DWARFContext(DWARFContext &) LLVM_DELETED_FUNCTION;
+  DWARFContext &operator=(DWARFContext &) LLVM_DELETED_FUNCTION;
 
   /// Read compile units from the debug_info section and store them in CUs.
   void parseCompileUnits();
-protected:
-  DWARFContext(bool isLittleEndian) : IsLittleEndian(isLittleEndian) {}
+
+  /// Read compile units from the debug_info.dwo section and store them in
+  /// DWOCUs.
+  void parseDWOCompileUnits();
+
 public:
+  DWARFContext() {}
   virtual void dump(raw_ostream &OS);
+
   /// Get the number of compile units in this context.
   unsigned getNumCompileUnits() {
     if (CUs.empty())
       parseCompileUnits();
     return CUs.size();
   }
+
+  /// Get the number of compile units in the DWO context.
+  unsigned getNumDWOCompileUnits() {
+    if (DWOCUs.empty())
+      parseDWOCompileUnits();
+    return DWOCUs.size();
+  }
+
   /// Get the compile unit at the specified index for this compile unit.
   DWARFCompileUnit *getCompileUnitAtIndex(unsigned index) {
     if (CUs.empty())
@@ -54,9 +68,19 @@ public:
     return &CUs[index];
   }
 
+  /// Get the compile unit at the specified index for the DWO compile units.
+  DWARFCompileUnit *getDWOCompileUnitAtIndex(unsigned index) {
+    if (DWOCUs.empty())
+      parseDWOCompileUnits();
+    return &DWOCUs[index];
+  }
+
   /// Get a pointer to the parsed DebugAbbrev object.
   const DWARFDebugAbbrev *getDebugAbbrev();
 
+  /// Get a pointer to the parsed dwo abbreviations object.
+  const DWARFDebugAbbrev *getDebugAbbrevDWO();
+
   /// Get a pointer to the parsed DebugAranges object.
   const DWARFDebugAranges *getDebugAranges();
 
@@ -69,8 +93,8 @@ public:
   virtual DIInliningInfo getInliningInfoForAddress(uint64_t Address,
       DILineInfoSpecifier Specifier = DILineInfoSpecifier());
 
-  bool isLittleEndian() const { return IsLittleEndian; }
-
+  virtual bool isLittleEndian() const = 0;
+  virtual const RelocAddrMap &infoRelocMap() const = 0;
   virtual StringRef getInfoSection() = 0;
   virtual StringRef getAbbrevSection() = 0;
   virtual StringRef getARangeSection() = 0;
@@ -78,6 +102,14 @@ public:
   virtual StringRef getStringSection() = 0;
   virtual StringRef getRangeSection() = 0;
 
+  // Sections for DWARF5 split dwarf proposal.
+  virtual StringRef getInfoDWOSection() = 0;
+  virtual StringRef getAbbrevDWOSection() = 0;
+  virtual StringRef getStringDWOSection() = 0;
+  virtual StringRef getStringOffsetDWOSection() = 0;
+  virtual StringRef getRangeDWOSection() = 0;
+  virtual const RelocAddrMap &infoDWORelocMap() const = 0;
+
   static bool isSupportedVersion(unsigned version) {
     return version == 2 || version == 3;
   }
@@ -95,35 +127,45 @@ private:
 /// pointers to it.
 class DWARFContextInMemory : public DWARFContext {
   virtual void anchor();
+  bool IsLittleEndian;
+  RelocAddrMap InfoRelocMap;
   StringRef InfoSection;
   StringRef AbbrevSection;
   StringRef ARangeSection;
   StringRef LineSection;
   StringRef StringSection;
   StringRef RangeSection;
-public:
-  DWARFContextInMemory(bool isLittleEndian,
-                       StringRef infoSection,
-                       StringRef abbrevSection,
-                       StringRef aRangeSection,
-                       StringRef lineSection,
-                       StringRef stringSection,
-                       StringRef rangeSection)
-    : DWARFContext(isLittleEndian),
-      InfoSection(infoSection),
-      AbbrevSection(abbrevSection),
-      ARangeSection(aRangeSection),
-      LineSection(lineSection),
-      StringSection(stringSection),
-      RangeSection(rangeSection)
-    {}
 
+  // Sections for DWARF5 split dwarf proposal.
+  RelocAddrMap InfoDWORelocMap;
+  StringRef InfoDWOSection;
+  StringRef AbbrevDWOSection;
+  StringRef StringDWOSection;
+  StringRef StringOffsetDWOSection;
+  StringRef RangeDWOSection;
+
+public:
+  DWARFContextInMemory(object::ObjectFile *);
+  virtual bool isLittleEndian() const { return IsLittleEndian; }
+  virtual const RelocAddrMap &infoRelocMap() const { return InfoRelocMap; }
   virtual StringRef getInfoSection() { return InfoSection; }
   virtual StringRef getAbbrevSection() { return AbbrevSection; }
   virtual StringRef getARangeSection() { return ARangeSection; }
   virtual StringRef getLineSection() { return LineSection; }
   virtual StringRef getStringSection() { return StringSection; }
   virtual StringRef getRangeSection() { return RangeSection; }
+
+  // Sections for DWARF5 split dwarf proposal.
+  virtual StringRef getInfoDWOSection() { return InfoDWOSection; }
+  virtual StringRef getAbbrevDWOSection() { return AbbrevDWOSection; }
+  virtual StringRef getStringDWOSection() { return StringDWOSection; }
+  virtual StringRef getStringOffsetDWOSection() {
+    return StringOffsetDWOSection;
+  }
+  virtual StringRef getRangeDWOSection() { return RangeDWOSection; }
+  virtual const RelocAddrMap &infoDWORelocMap() const {
+    return InfoDWORelocMap;
+  }
 };
 
 }