+ added extra_data_offset constant, similar to extra_param_offset but for data

  pointer size fixups

git-svn-id: trunk@27356 -

rtl/msdos/system.pp

@@ -88,6 +88,11 @@ const
 {$else FPC_X86_CODE_FAR}
   extra_param_offset = 0;
 {$endif FPC_X86_CODE_FAR}
+{$if defined(FPC_X86_DATA_FAR) or defined(FPC_X86_DATA_HUGE)}
+  extra_data_offset = 2;
+{$else}
+  extra_data_offset = 0;
+{$endif}
 
 type
   PFarByte = ^Byte;far;