/* 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
+ 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
This file is part of GDB.
/* 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 gdbarch *gdbarch = get_frame_arch (this_frame);
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_offset_hack (current_gdbarch, regnum);
- *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 value *value;
+
+ /* Return the actual value. */
+ value = allocate_value (register_type (gdbarch, regnum));
+ VALUE_LVAL (value) = lval_register;
+ VALUE_REGNUM (value) = regnum;
+ VALUE_FRAME_ID (value) = get_frame_id (this_frame);
+
+ /* 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, value_contents_raw (value));
+
+ 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 = *this_prologue_cache;
+ return get_regcache_arch (cache->regcache);
}
const struct frame_unwind sentinel_frame_unwinder =
SENTINEL_FRAME,
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;