Adding multiple object support to MCJIT EH frame handling

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192504 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/ExecutionEngine/RTDyldMemoryManager.h

@@ -53,7 +53,12 @@ public:
     StringRef SectionName, bool IsReadOnly) = 0;
 
   /// Register the EH frames with the runtime so that c++ exceptions work.
-  virtual void registerEHFrames(StringRef SectionData);
+  ///
+  /// \p Addr parameter provides the local address of the EH frame section
+  /// data, while \p LoadAddr provides the address of the data in the target
+  /// address space.  If the section has not been remapped (which will usually
+  /// be the case for local execution) these two values will be the same.
+  virtual void registerEHFrames(uint8_t *Addr, uint64_t LoadAddr, size_t Size);
 
   /// This method returns the address of the specified function or variable.
   /// It is used to resolve symbols during module linking.

include/llvm/ExecutionEngine/RuntimeDyld.h

@@ -64,9 +64,14 @@ public:
   /// This is the address which will be used for relocation resolution.
   void mapSectionAddress(const void *LocalAddress, uint64_t TargetAddress);
 
-  StringRef getErrorString();
+  /// Register any EH frame sections that have been loaded but not previously
+  /// registered with the memory manager.  Note, RuntimeDyld is responsible
+  /// for identifying the EH frame and calling the memory manager with the
+  /// EH frame section data.  However, the memory manager itself will handle
+  /// the actual target-specific EH frame registration.
+  void registerEHFrames();
 
-  StringRef getEHFrameSection();
+  StringRef getErrorString();
 };
 
 } // end namespace llvm