46654a5bcc
* sentinel-frame.c (sentinel_frame_prev_register): Replace REGISTER_BYTE with register_offset_hack. * regcache.c (init_regcache_descr): When REGISTER_BYTE_P, check that REGISTER_BYTE is consistent with the regcache. * gdbarch.sh (REGISTER_BYTE): Add a predicate. * gdbarch.h, gdbarch.c: Regenerate.
93 lines
2.9 KiB
C
93 lines
2.9 KiB
C
/* 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.
|
|
|
|
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 2 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, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
|
|
#include "defs.h"
|
|
#include "regcache.h"
|
|
#include "sentinel-frame.h"
|
|
#include "inferior.h"
|
|
#include "frame-unwind.h"
|
|
|
|
struct frame_unwind_cache
|
|
{
|
|
struct regcache *regcache;
|
|
};
|
|
|
|
void *
|
|
sentinel_frame_cache (struct regcache *regcache)
|
|
{
|
|
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. */
|
|
|
|
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 = *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);
|
|
}
|
|
}
|
|
|
|
void
|
|
sentinel_frame_this_id (struct frame_info *next_frame,
|
|
void **this_prologue_cache,
|
|
struct frame_id *this_id)
|
|
{
|
|
/* 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 =
|
|
{
|
|
/* 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;
|