--- a/include/dwarf2.h
+++ b/include/dwarf2.h
@@ -757,6 +757,14 @@ enum dwarf_line_number_x_ops
     DW_LNE_hi_user = 0xff
   };
 
+/* Sub-opcodes for DW_LNE_HP_source_file_correlation.  */
+enum dwarf_line_number_hp_sfc_ops
+  {
+    DW_LNE_HP_SFC_formfeed = 1,
+    DW_LNE_HP_SFC_set_listing_line = 2,
+    DW_LNE_HP_SFC_associate = 3
+  };
+
 /* Call frame information.  */
 enum dwarf_call_frame_info
   {