1 /* Code dealing with dummy stack frames, for GDB, the GNU debugger.
3 Copyright 2002 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 #if !defined (DUMMY_FRAME_H)
23 #define DUMMY_FRAME_H 1
28 /* GENERIC DUMMY FRAMES
30 The following code serves to maintain the dummy stack frames for
31 inferior function calls (ie. when gdb calls into the inferior via
32 call_function_by_hand). This code saves the machine state before
33 the call in host memory, so we must maintain an independent stack
34 and keep it consistant etc. I am attempting to make this code
35 generic enough to be used by many targets.
37 The cheapest and most generic way to do CALL_DUMMY on a new target
38 is probably to define CALL_DUMMY to be empty, CALL_DUMMY_LENGTH to
39 zero, and CALL_DUMMY_LOCATION to AT_ENTRY. Then you must remember
40 to define PUSH_RETURN_ADDRESS, because no call instruction will be
41 being executed by the target. Also FRAME_CHAIN_VALID as
42 generic_{file,func}_frame_chain_valid and FIX_CALL_DUMMY as
43 generic_fix_call_dummy. */
45 /* Assuming that FRAME is a dummy, return a register value for the
48 extern void dummy_frame_register_unwind (struct frame_info
*frame
,
52 enum lval_type
*lvalp
,
57 /* Return the regcache that belongs to the dummy-frame identifed by PC
58 and FP, or NULL if no such frame exists. */
59 /* FIXME: cagney/2002-11-08: The function only exists because of
60 deprecated_generic_get_saved_register. Eliminate that function and
63 extern struct regcache
*generic_find_dummy_frame (CORE_ADDR pc
,
65 #endif /* !defined (DUMMY_FRAME_H) */
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