Implement GDB integration for source level debugging of code JITed using

the MCJIT execution engine.

The GDB JIT debugging integration support works by registering a loaded
object image with a pre-defined function that GDB will monitor if GDB
is attached. GDB integration support is implemented for ELF only at this
time. This integration requires GDB version 7.0 or newer.

Patch by Andy Kaylor!

 

llvm-svn: 154868

1 files changed, 10 insertions, 2 deletions

diff --git a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
index 36566da57a5..e7f6fab16fc 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
@@ -22,6 +22,8 @@ using namespace llvm;
 namespace llvm {
 class RuntimeDyldELF : public RuntimeDyldImpl {
 protected:
+  ObjectImage *LoadedObject;
+
   void resolveX86_64Relocation(uint8_t *LocalAddress,
                                uint64_t FinalAddress,
                                uint64_t Value,
@@ -47,12 +49,18 @@ protected:
                                  int64_t Addend);
 
   virtual void processRelocationRef(const ObjRelocationInfo &Rel,
-                                    const ObjectFile &Obj,
+                                    ObjectImage &Obj,
                                     ObjSectionToIDMap &ObjSectionToID,
                                     LocalSymbolMap &Symbols, StubMap &Stubs);
 
+  virtual ObjectImage *createObjectImage(const MemoryBuffer *InputBuffer);
+  virtual void handleObjectLoaded(ObjectImage *Obj);
+
 public:
-  RuntimeDyldELF(RTDyldMemoryManager *mm) : RuntimeDyldImpl(mm) {}
+  RuntimeDyldELF(RTDyldMemoryManager *mm)
+      : RuntimeDyldImpl(mm), LoadedObject(0) {}
+
+  virtual ~RuntimeDyldELF();
 
   bool isCompatibleFormat(const MemoryBuffer *InputBuffer) const;
 };