Adding PIC support for ELF on x86_64 platforms

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188726 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 16 insertions, 3 deletions

diff --git a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
index 794c7ece10..14fb5740e5 100644
--- a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
+++ b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
@@ -35,13 +35,15 @@ class RuntimeDyldELF : public RuntimeDyldImpl {
                          uint64_t Offset,
                          uint64_t Value,
                          uint32_t Type,
-                         int64_t Addend);
+                         int64_t Addend,
+                         uint64_t SymOffset=0);
 
   void resolveX86_64Relocation(const SectionEntry &Section,
                                uint64_t Offset,
                                uint64_t Value,
                                uint32_t Type,
-                               int64_t Addend);
+                               int64_t  Addend,
+                               uint64_t SymOffset);
 
   void resolveX86Relocation(const SectionEntry &Section,
                             uint64_t Offset,
@@ -84,8 +86,18 @@ class RuntimeDyldELF : public RuntimeDyldImpl {
                            ObjSectionToIDMap &LocalSections,
                            RelocationValueRef &Rel);
 
+  uint64_t findGOTEntry(uint64_t LoadAddr, uint64_t Offset);
+  size_t getGOTEntrySize();
+
+  virtual void updateGOTEntries(StringRef Name, uint64_t Addr);
+
+  SmallVector<RelocationValueRef, 2>  GOTEntries;
+  unsigned GOTSectionID;
+
 public:
-  RuntimeDyldELF(RTDyldMemoryManager *mm) : RuntimeDyldImpl(mm) {}
+  RuntimeDyldELF(RTDyldMemoryManager *mm) : RuntimeDyldImpl(mm),
+                                            GOTSectionID(0)
+                                          {}
 
   virtual void resolveRelocation(const RelocationEntry &RE, uint64_t Value);
   virtual void processRelocationRef(unsigned SectionID,
@@ -97,6 +109,7 @@ public:
   virtual bool isCompatibleFormat(const ObjectBuffer *Buffer) const;
   virtual ObjectImage *createObjectImage(ObjectBuffer *InputBuffer);
   virtual StringRef getEHFrameSection();
+  virtual void finalizeLoad();
   virtual ~RuntimeDyldELF();
 };