/* Code dealing with register stack frames, for GDB, the GNU debugger.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
- 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software
- Foundation, Inc.
+ Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+ 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007
+ Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#include "defs.h"
/* Here the register value is taken direct from the register cache. */
-void
-sentinel_frame_register_unwind (struct frame_info *frame,
- void **unwind_cache,
- int regnum, int *optimized,
- enum lval_type *lvalp, CORE_ADDR *addrp,
- int *realnum, void *bufferp)
+static void
+sentinel_frame_prev_register (struct frame_info *next_frame,
+ void **this_prologue_cache,
+ int regnum, int *optimized,
+ enum lval_type *lvalp, CORE_ADDR *addrp,
+ int *realnum, gdb_byte *bufferp)
{
- struct frame_unwind_cache *cache = *unwind_cache;
+ struct frame_unwind_cache *cache = *this_prologue_cache;
/* Describe the register's location. A reg-frame maps all registers
onto the corresponding hardware register. */
*optimized = 0;
*lvalp = lval_register;
- *addrp = REGISTER_BYTE (regnum);
+ *addrp = register_offset_hack (current_gdbarch, regnum);
*realnum = regnum;
/* If needed, find and return the value of the register. */
}
}
-CORE_ADDR
-sentinel_frame_pc_unwind (struct frame_info *frame,
- void **cache)
-{
- /* FIXME: cagney/2003-01-08: This should be using a per-architecture
- method that doesn't suffer from DECR_PC_AFTER_BREAK problems.
- Such a method would take unwind_cache, regcache and stop reason
- parameters. */
- return read_pc ();
-}
-
-void
-sentinel_frame_id_unwind (struct frame_info *frame,
- void **cache,
- struct frame_id *id)
+static void
+sentinel_frame_this_id (struct frame_info *next_frame,
+ void **this_prologue_cache,
+ struct frame_id *this_id)
{
- /* FIXME: cagney/2003-01-08: This should be using a per-architecture
- method that doesn't suffer from DECR_PC_AFTER_BREAK problems.
- Such a method would take unwind_cache, regcache and stop reason
- parameters. */
- id->base = read_fp ();
- id->pc = read_pc ();
+ /* The sentinel frame is used as a starting point for creating the
+ previous (inner most) frame. That frame's THIS_ID method will be
+ called to determine the inner most frame's ID. Not this one. */
+ internal_error (__FILE__, __LINE__, _("sentinel_frame_this_id called"));
}
-static void
-sentinel_frame_pop (struct frame_info *frame,
- void **cache,
- struct regcache *regcache)
+static CORE_ADDR
+sentinel_frame_prev_pc (struct frame_info *next_frame,
+ void **this_prologue_cache)
{
- internal_error (__FILE__, __LINE__, "Function sentinal_frame_pop called");
+ struct gdbarch *gdbarch = get_frame_arch (next_frame);
+ return gdbarch_unwind_pc (gdbarch, next_frame);
}
const struct frame_unwind sentinel_frame_unwinder =
{
- sentinel_frame_pop,
- sentinel_frame_pc_unwind,
- sentinel_frame_id_unwind,
- sentinel_frame_register_unwind
+ SENTINEL_FRAME,
+ sentinel_frame_this_id,
+ sentinel_frame_prev_register,
+ NULL, /* unwind_data */
+ NULL, /* sniffer */
+ sentinel_frame_prev_pc,
};
const struct frame_unwind *const sentinel_frame_unwind = &sentinel_frame_unwinder;