diff --git a/include/llvm/Target/TargetAsmInfo.h b/include/llvm/Target/TargetAsmInfo.h
index 36f5a19..04f9118 100644
--- a/include/llvm/Target/TargetAsmInfo.h
+++ b/include/llvm/Target/TargetAsmInfo.h
@@ -203,7 +203,12 @@
     const char *FourByteConstantSection;
     const char *EightByteConstantSection;
     const char *SixteenByteConstantSection;
-    
+
+    /// ReadOnlySection - This is the directive that is emitted to switch to a
+    /// read-only section for constant data (e.g. data declared const,
+    /// jump tables).
+    const char *ReadOnlySection;          // Defaults to NULL
+
     //===--- Global Variable Emission Directives --------------------------===//
     
     /// GlobalDirective - This is the directive used to declare a global entity.
@@ -474,6 +479,9 @@
     const char *getSixteenByteConstantSection() const {
       return SixteenByteConstantSection;
     }
+    const char *getReadOnlySection() const {
+      return ReadOnlySection;
+    }
     const char *getGlobalDirective() const {
       return GlobalDirective;
     }
diff --git a/lib/Target/TargetAsmInfo.cpp b/lib/Target/TargetAsmInfo.cpp
index da47749..cf3f6ee 100644
--- a/lib/Target/TargetAsmInfo.cpp
+++ b/lib/Target/TargetAsmInfo.cpp
@@ -60,6 +60,7 @@
   FourByteConstantSection(0),
   EightByteConstantSection(0),
   SixteenByteConstantSection(0),
+  ReadOnlySection(0),
   GlobalDirective(0),
   SetDirective(0),
   LCOMMDirective(0),