Reapply part of r237975, "Fix Clang -Wmissing-override warning", except for DIContext...

[oota-llvm.git] / lib / ExecutionEngine / RuntimeDyld / RuntimeDyldELF.h

diff --git a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
index f9c1d4db30b63bd9ab9fcdd757e4a7c072ab5630..9a4a8630e4c403d3a29722f6788ad01f90ce4ae0 100644 (file)
--- a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
+++ b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
@@ -20,16 +20,6 @@
 using namespace llvm;
 
 namespace llvm {
-namespace {
-// Helper for extensive error checking in debug builds.
-std::error_code Check(std::error_code Err) {
-  if (Err) {
-    report_fatal_error(Err.message());
-  }
-  return Err;
-}
-
-} // end anonymous namespace
 
 class RuntimeDyldELF : public RuntimeDyldImpl {
 
@@ -90,16 +80,39 @@ class RuntimeDyldELF : public RuntimeDyldImpl {
                            ObjSectionToIDMap &LocalSections,
                            RelocationValueRef &Rel);
 
-  uint64_t findGOTEntry(uint64_t LoadAddr, uint64_t Offset);
   size_t getGOTEntrySize();
 
-  void updateGOTEntries(StringRef Name, uint64_t Addr) override;
+  SectionEntry &getSection(unsigned SectionID) { return Sections[SectionID]; }
+
+  // Allocate no GOT entries for use in the given section.
+  uint64_t allocateGOTEntries(unsigned SectionID, unsigned no);
+
+  // Resolve the relvative address of GOTOffset in Section ID and place
+  // it at the given Offset
+  void resolveGOTOffsetRelocation(unsigned SectionID, uint64_t Offset,
+                                  uint64_t GOTOffset);
+
+  // For a GOT entry referenced from SectionID, compute a relocation entry
+  // that will place the final resolved value in the GOT slot
+  RelocationEntry computeGOTOffsetRE(unsigned SectionID,
+                                     uint64_t GOTOffset,
+                                     uint64_t SymbolOffset,
+                                     unsigned Type);
+
+  // Compute the address in memory where we can find the placeholder
+  void *computePlaceholderAddress(unsigned SectionID, uint64_t Offset) const;
+
+  // Split out common case for createing the RelocationEntry for when the relocation requires
+  // no particular advanced processing.
+  void processSimpleRelocation(unsigned SectionID, uint64_t Offset, unsigned RelType, RelocationValueRef Value);
+
+  // The tentative ID for the GOT section
+  unsigned GOTSectionID;
 
-  // Relocation entries for symbols whose position-independent offset is
-  // updated in a global offset table.
-  typedef SmallVector<RelocationValueRef, 2> GOTRelocations;
-  GOTRelocations GOTEntries; // List of entries requiring finalization.
-  SmallVector<std::pair<SID, GOTRelocations>, 8> GOTs; // Allocated tables.
+  // Records the current number of allocated slots in the GOT
+  // (This would be equivalent to GOTEntries.size() were it not for relocations
+  // that consume more than one slot)
+  unsigned CurrentGOTIndex;
 
   // When a module is loaded we save the SectionID of the EH frame section
   // in a table until we receive a request to register all unregistered
@@ -108,8 +121,9 @@ class RuntimeDyldELF : public RuntimeDyldImpl {
   SmallVector<SID, 2> RegisteredEHFrameSections;
 
 public:
-  RuntimeDyldELF(RTDyldMemoryManager *mm);
-  virtual ~RuntimeDyldELF();
+  RuntimeDyldELF(RuntimeDyld::MemoryManager &MemMgr,
+                 RuntimeDyld::SymbolResolver &Resolver);
+  ~RuntimeDyldELF() override;
 
   std::unique_ptr<RuntimeDyld::LoadedObjectInfo>
   loadObject(const object::ObjectFile &O) override;
@@ -119,7 +133,7 @@ public:
   processRelocationRef(unsigned SectionID, relocation_iterator RelI,
                        const ObjectFile &Obj,
                        ObjSectionToIDMap &ObjSectionToID,
-                       const SymbolTableMap &Symbols, StubMap &Stubs) override;
+                       StubMap &Stubs) override;
   bool isCompatibleFile(const object::ObjectFile &Obj) const override;
   void registerEHFrames() override;
   void deregisterEHFrames() override;