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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [gdb/] [frame-base.h] - Blame information for rev 157

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1 24 jeremybenn
/* Definitions for a frame base, for GDB, the GNU debugger.
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   Copyright (C) 2003, 2007, 2008 Free Software Foundation, Inc.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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#if !defined (FRAME_BASE_H)
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#define FRAME_BASE_H 1
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struct frame_info;
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struct frame_id;
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struct frame_unwind;
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struct frame_base;
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struct gdbarch;
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struct regcache;
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/* Assuming the frame chain: (outer) prev <-> this <-> next (inner);
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   and that this is a `normal frame'; use the NEXT frame, and its
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   register unwind method, to determine the address of THIS frame's
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   `base'.
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   The exact meaning of `base' is highly dependant on the type of the
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   debug info.  It is assumed that dwarf2, stabs, ... will each
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   provide their own methods.
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   A typical implmentation will return the same value for base,
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   locals-base and args-base.  That value, however, will likely be
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   different to the frame ID's stack address.  */
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/* A generic base address.  */
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typedef CORE_ADDR (frame_this_base_ftype) (struct frame_info *next_frame,
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                                           void **this_base_cache);
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/* The base address of the frame's local variables.  */
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typedef CORE_ADDR (frame_this_locals_ftype) (struct frame_info *next_frame,
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                                             void **this_base_cache);
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/* The base address of the frame's arguments / parameters.  */
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typedef CORE_ADDR (frame_this_args_ftype) (struct frame_info *next_frame,
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                                           void **this_base_cache);
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struct frame_base
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{
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  /* If non-NULL, a low-level unwinder that shares its implementation
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     with this high-level frame-base method.  */
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  const struct frame_unwind *unwind;
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  frame_this_base_ftype *this_base;
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  frame_this_locals_ftype *this_locals;
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  frame_this_args_ftype *this_args;
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};
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/* Given the NEXT frame, return the frame base methods for THIS frame,
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   or NULL if it can't handle THIS frame.  */
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typedef const struct frame_base *(frame_base_sniffer_ftype) (struct frame_info *next_frame);
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/* Append a frame base sniffer to the list.  The sniffers are polled
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   in the order that they are appended.  */
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extern void frame_base_append_sniffer (struct gdbarch *gdbarch,
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                                       frame_base_sniffer_ftype *sniffer);
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/* Set the default frame base.  If all else fails, this one is
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   returned.  If this isn't set, the default is to use legacy code
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   that uses things like the frame ID's base (ulgh!).  */
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extern void frame_base_set_default (struct gdbarch *gdbarch,
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                                    const struct frame_base *def);
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/* Iterate through the list of frame base handlers until one returns
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   an implementation.  */
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extern const struct frame_base *frame_base_find_by_frame (struct frame_info *next_frame);
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#endif

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