mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-09 04:21:49 +08:00
494cca16bd
* dummy-frame.h (dummy_frame_id_unwind): Delete declaration. (dummy_frame_pc_unwind, dummy_frame_register_unwind): Ditto. (struct frame_unwind): Declare opaque. (dummy_frame_p): Declare function. * dummy-frame.c (dummy_frame_id_unwind): Make static. (dummy_frame_pc_unwind, dummy_frame_register_unwind): Ditto. * dummy-frame.c: Include "frame-unwind.h". (dummy_frame_p): New function. (dummy_frame_unwind): New variable. * frame.c: Include "frame-unwind.h". (frame_pc_unwind, frame_id_unwind, frame_register_unwind): Update to use the new unwind field. (set_unwind_by_pc): Delete function. (create_new_frame, get_prev_frame): Set unwind field using frame_unwind_find_by_pc. (trad_frame_unwind, trad_frame_unwinder): New variables. * frame.h (trad_frame_unwind): Declare variable. (frame_id_unwind_ftype): Delete declaration. (frame_pc_unwind_ftype, frame_register_unwind_ftype): Ditto. (struct frame_unwind): Declare opaque. (struct frame_info): Replace the fields id_unwind, pc_unwind and register_unwind with a single unwind pointer. * frame-unwind.h, frame-unwind.c: New files. * Makefile.in (SFILES): Add frame-unwind.c. (frame_unwind_h): Define. (COMMON_OBS): Add frame-unwind.o. (frame-unwind.o): Specify dependencies. (frame.o, dummy-frame.o): Update dependencies.
104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
/* Definitions for frame unwinder, for GDB, the GNU debugger.
|
|
|
|
Copyright 2003 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 "frame.h"
|
|
#include "frame-unwind.h"
|
|
#include "gdb_assert.h"
|
|
#include "dummy-frame.h"
|
|
|
|
static struct gdbarch_data *frame_unwind_data;
|
|
|
|
struct frame_unwind_table
|
|
{
|
|
frame_unwind_p_ftype **p;
|
|
int middle;
|
|
int nr;
|
|
};
|
|
|
|
/* Append a predicate to the end of the table. */
|
|
static void
|
|
append_predicate (struct frame_unwind_table *table, frame_unwind_p_ftype *p)
|
|
{
|
|
table->p = xrealloc (table->p, ((table->nr + 1)
|
|
* sizeof (frame_unwind_p_ftype *)));
|
|
table->p[table->nr] = p;
|
|
table->nr++;
|
|
}
|
|
|
|
static void *
|
|
frame_unwind_init (struct gdbarch *gdbarch)
|
|
{
|
|
struct frame_unwind_table *table = XCALLOC (1, struct frame_unwind_table);
|
|
append_predicate (table, dummy_frame_p);
|
|
return table;
|
|
}
|
|
|
|
static void
|
|
frame_unwind_free (struct gdbarch *gdbarch, void *data)
|
|
{
|
|
struct frame_unwind_table *table =
|
|
gdbarch_data (gdbarch, frame_unwind_data);
|
|
xfree (table->p);
|
|
xfree (table);
|
|
}
|
|
|
|
void
|
|
frame_unwind_append_predicate (struct gdbarch *gdbarch,
|
|
frame_unwind_p_ftype *p)
|
|
{
|
|
struct frame_unwind_table *table =
|
|
gdbarch_data (gdbarch, frame_unwind_data);
|
|
if (table == NULL)
|
|
{
|
|
/* ULGH, called during architecture initialization. Patch
|
|
things up. */
|
|
table = frame_unwind_init (gdbarch);
|
|
set_gdbarch_data (gdbarch, frame_unwind_data, table);
|
|
}
|
|
append_predicate (table, p);
|
|
}
|
|
|
|
const struct frame_unwind *
|
|
frame_unwind_find_by_pc (struct gdbarch *gdbarch, CORE_ADDR pc)
|
|
{
|
|
int i;
|
|
struct frame_unwind_table *table =
|
|
gdbarch_data (gdbarch, frame_unwind_data);
|
|
/* Seriously old code. Don't even try to use this new mechanism. */
|
|
if (!DEPRECATED_USE_GENERIC_DUMMY_FRAMES)
|
|
return trad_frame_unwind;
|
|
for (i = 0; i < table->nr; i++)
|
|
{
|
|
const struct frame_unwind *desc = table->p[i] (pc);
|
|
if (desc != NULL)
|
|
return desc;
|
|
}
|
|
return trad_frame_unwind;
|
|
}
|
|
|
|
void
|
|
_initialize_frame_unwind (void)
|
|
{
|
|
frame_unwind_data = register_gdbarch_data (frame_unwind_init,
|
|
frame_unwind_free);
|
|
}
|