/* Code dealing with dummy stack frames, for GDB, the GNU debugger.
- Copyright 2002 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2004 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. */
#if !defined (DUMMY_FRAME_H)
#define DUMMY_FRAME_H 1
struct frame_unwind;
struct frame_id;
-/* GENERIC DUMMY FRAMES
-
- The following code serves to maintain the dummy stack frames for
- inferior function calls (ie. when gdb calls into the inferior via
- call_function_by_hand). This code saves the machine state before
- the call in host memory, so we must maintain an independent stack
- and keep it consistant etc. I am attempting to make this code
- generic enough to be used by many targets.
-
- The cheapest and most generic way to do CALL_DUMMY on a new target
- is probably to define CALL_DUMMY to be empty,
- DEPRECATED_CALL_DUMMY_LENGTH to zero, and CALL_DUMMY_LOCATION to
- AT_ENTRY. Then you must remember to define PUSH_RETURN_ADDRESS,
- because no call instruction will be being executed by the target.
- Also DEPRECATED_FRAME_CHAIN_VALID as
- generic_{file,func}_frame_chain_valid and do not set
- DEPRECATED_FIX_CALL_DUMMY. */
+/* Push the information needed to identify, and unwind from, a dummy
+ frame onto the dummy frame stack. */
+
+/* NOTE: cagney/2004-08-02: This interface will eventually need to be
+ parameterized with the caller's thread - that will allow per-thread
+ dummy-frame stacks and, hence, per-thread inferior function
+ calls. */
+
+/* NOTE: cagney/2004-08-02: In the case of ABIs using push_dummy_code
+ containing more than one instruction, this interface many need to
+ be expanded so that it knowns the lower/upper extent of the dummy
+ frame's code. */
+
+extern void dummy_frame_push (struct regcache *regcache,
+ const struct frame_id *dummy_id);
/* If the PC falls in a dummy frame, return a dummy frame
unwinder. */
-extern const struct frame_unwind *dummy_frame_sniffer (struct frame_info *next_frame);
-
-/* Return the regcache that belongs to the dummy-frame identifed by PC
- and FP, or NULL if no such frame exists. */
-/* FIXME: cagney/2002-11-08: The function only exists because of
- deprecated_generic_get_saved_register. Eliminate that function and
- this, to, can go. */
+extern const struct frame_unwind *const dummy_frame_unwind;
-extern struct regcache *deprecated_find_dummy_frame_regcache (CORE_ADDR pc,
- CORE_ADDR fp);
#endif /* !defined (DUMMY_FRAME_H) */