/* Code dealing with register stack frames, for GDB, the GNU debugger.
- Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007, 2008
- Free Software Foundation, Inc.
+ Copyright (C) 1986-2020 Free Software Foundation, Inc.
This file is part of GDB.
{
struct frame_unwind_cache *cache =
FRAME_OBSTACK_ZALLOC (struct frame_unwind_cache);
+
cache->regcache = regcache;
return cache;
}
/* Here the register value is taken direct from the register cache. */
-static void
-sentinel_frame_prev_register (struct frame_info *next_frame,
+static struct value *
+sentinel_frame_prev_register (struct frame_info *this_frame,
void **this_prologue_cache,
- int regnum, int *optimized,
- enum lval_type *lvalp, CORE_ADDR *addrp,
- int *realnum, gdb_byte *bufferp)
+ int regnum)
{
- 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 = 0;
- *realnum = regnum;
-
- /* If needed, find and return the value of the register. */
- if (bufferp != NULL)
- {
- /* Return the actual value. */
- /* Use the regcache_cooked_read() method so that it, on the fly,
- constructs either a raw or pseudo register from the raw
- register cache. */
- regcache_cooked_read (cache->regcache, regnum, bufferp);
- }
+ struct frame_unwind_cache *cache
+ = (struct frame_unwind_cache *) *this_prologue_cache;
+ struct value *value;
+
+ value = cache->regcache->cooked_read_value (regnum);
+ VALUE_NEXT_FRAME_ID (value) = sentinel_frame_id;
+
+ return value;
}
static void
-sentinel_frame_this_id (struct frame_info *next_frame,
+sentinel_frame_this_id (struct frame_info *this_frame,
void **this_prologue_cache,
struct frame_id *this_id)
{
internal_error (__FILE__, __LINE__, _("sentinel_frame_this_id called"));
}
-static CORE_ADDR
-sentinel_frame_prev_pc (struct frame_info *next_frame,
- void **this_prologue_cache)
+static struct gdbarch *
+sentinel_frame_prev_arch (struct frame_info *this_frame,
+ void **this_prologue_cache)
{
- struct gdbarch *gdbarch = get_frame_arch (next_frame);
- return gdbarch_unwind_pc (gdbarch, next_frame);
+ struct frame_unwind_cache *cache
+ = (struct frame_unwind_cache *) *this_prologue_cache;
+
+ return cache->regcache->arch ();
}
-const struct frame_unwind sentinel_frame_unwinder =
+const struct frame_unwind sentinel_frame_unwind =
{
SENTINEL_FRAME,
+ default_frame_unwind_stop_reason,
sentinel_frame_this_id,
sentinel_frame_prev_register,
- NULL, /* unwind_data */
- NULL, /* sniffer */
- sentinel_frame_prev_pc,
+ NULL,
+ NULL,
+ NULL,
+ sentinel_frame_prev_arch,
};
-
-const struct frame_unwind *const sentinel_frame_unwind = &sentinel_frame_unwinder;