/* Code dealing with register stack frames, for GDB, the GNU debugger.

   Copyright (C) 2003, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#if !defined (SENTINEL_FRAME_H)
#define SENTINEL_FRAME_H 1

struct frame_unwind;
struct regcache;

/* Implement the sentinel frame.  The sentinel frame terminates the
   inner most end of the frame chain.  If unwound, it returns the
   information need to construct an inner-most frame.  */

/* Pump prime the sentinel frame's cache.  Since this needs the
   REGCACHE provide that here.  */

extern void *sentinel_frame_cache (struct regcache *regcache);

/* At present there is only one type of sentinel frame.  */

extern const struct frame_unwind *const sentinel_frame_unwind;

#endif /* !defined (SENTINEL_FRAME_H)  */