gdb/dummy-frame.h

   1 /* Code dealing with dummy stack frames, for GDB, the GNU debugger.
   2
   3    Copyright (C) 2002, 2004, 2007-2012 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   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 3 of the License, or
  10    (at your option) any later version.
  11
  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.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #if !defined (DUMMY_FRAME_H)
  21 #define DUMMY_FRAME_H 1
  22
  23 #include "frame.h"
  24
  25 struct infcall_suspend_state;
  26 struct frame_unwind;
  27
  28 /* Push the information needed to identify, and unwind from, a dummy
  29    frame onto the dummy frame stack.  */
  30
  31 /* NOTE: cagney/2004-08-02: This interface will eventually need to be
  32    parameterized with the caller's thread - that will allow per-thread
  33    dummy-frame stacks and, hence, per-thread inferior function
  34    calls.  */
  35
  36 /* NOTE: cagney/2004-08-02: In the case of ABIs using push_dummy_code
  37    containing more than one instruction, this interface many need to
  38    be expanded so that it knowns the lower/upper extent of the dummy
  39    frame's code.  */
  40
  41 extern void dummy_frame_push (struct infcall_suspend_state *caller_state,
  42                               const struct frame_id *dummy_id);
  43
  44 /* Pop the dummy frame DUMMY_ID, restoring program state to that before the
  45    frame was created.
  46    On return reinit_frame_cache has been called.
  47    If the frame isn't found, flag an internal error.
  48
  49    NOTE: This can only pop the one frame, even if it is in the middle of the
  50    stack, because the other frames may be for different threads, and there's
  51    currently no way to tell which stack frame is for which thread.  */
  52
  53 extern void dummy_frame_pop (struct frame_id dummy_id);
  54
  55 extern void dummy_frame_discard (struct frame_id dummy_id);
  56
  57 /* If the PC falls in a dummy frame, return a dummy frame
  58    unwinder.  */
  59
  60 extern const struct frame_unwind dummy_frame_unwind;
  61
  62 #endif /* !defined (DUMMY_FRAME_H)  */