Implement IMAGE_REL_AMD64_SECREL for RuntimeDyldCOFFX86_64

lldb on Windows uses the ExecutionEngine for expression evaluation
and hits the llvm_unreachable due to this relocation. Thus, implement
the relocation and add a test to verify it's function.

llvm-svn: 348904

1 files changed, 7 insertions, 0 deletions

diff --git a/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFX86_64.h b/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFX86_64.h
index 39bdc4b6921..aee5f6dc374 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFX86_64.h
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFX86_64.h
@@ -128,6 +128,13 @@ public:
       break;
     }
 
+    case COFF::IMAGE_REL_AMD64_SECREL: {
+      assert(static_cast<int64_t>(RE.Addend) <= INT32_MAX && "Relocation overflow");
+      assert(static_cast<int64_t>(RE.Addend) >= INT32_MIN && "Relocation underflow");
+      writeBytesUnaligned(RE.Addend, Target, 4);
+      break;
+    }
+
     default:
       llvm_unreachable("Relocation type not implemented yet!");
       break;