new file mode 100644
--- /dev/null
+++ b/packages/kernel/current/src/debug/dbg-thread-syscall.h
@@ -0,0 +1,70 @@
+
+/* 
+ * Copyright (c) 1998 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+
+/* This file should be included only by
+     thread-syscall-relay.c and
+     dbg-thread-demux.c
+     */
+     
+     
+
+enum dbg_syscall_ids 
+  {
+    dbg_null_func ,
+    dbg_capabilities_func,
+    dbg_currthread_func,
+    dbg_threadlist_func,
+    dbg_threadinfo_func,
+    dbg_getthreadreg_func,
+    dbg_setthreadreg_func
+  } ;
+
+
+union dbg_thread_syscall_parms
+{
+  struct
+  {
+    struct dbg_capabilities * abilities ;
+  } cap_parms ;
+
+  struct
+  {
+    threadref * ref ;
+  } currthread_parms ;
+  
+  struct
+  {
+    int startflag ;
+    threadref * lastid ;
+    threadref * nextthreadid ;
+  } threadlist_parms ;
+
+  struct
+  {
+    threadref * ref ;
+    struct cygmon_thread_debug_info * info ;
+  } info_parms ;
+  
+  struct
+  {
+    threadref * thread ;
+    int regcount ;
+    void * registers ;
+  } reg_parms ;
+} ;
+
+
+typedef int (*dbg_syscall_func) (enum dbg_syscall_ids id,
+				 union dbg_thread_syscall_parms  * p ) ;