/* 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, void *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)
-{
- /* 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 ();
-}
-
static void
-sentinel_frame_pop (struct frame_info *frame,
- void **cache,
- struct regcache *regcache)
+sentinel_frame_this_id (struct frame_info *next_frame,
+ void **this_prologue_cache,
+ struct frame_id *this_id)
{
- internal_error (__FILE__, __LINE__, "Function sentinal_frame_pop called");
+ /* 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");
}
const struct frame_unwind sentinel_frame_unwinder =
{
- sentinel_frame_pop,
- sentinel_frame_pc_unwind,
- sentinel_frame_id_unwind,
- sentinel_frame_register_unwind
+ /* Should the sentinel frame be given a special type? */
+ NORMAL_FRAME,
+ sentinel_frame_this_id,
+ sentinel_frame_prev_register
};
const struct frame_unwind *const sentinel_frame_unwind = &sentinel_frame_unwinder;