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.
103 lines
2.8 KiB
C
103 lines
2.8 KiB
C
/* Definitions for frame unwinder, for GDB, the GNU debugger.
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Copyright 2003 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 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "frame.h"
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#include "frame-unwind.h"
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#include "gdb_assert.h"
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#include "dummy-frame.h"
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static struct gdbarch_data *frame_unwind_data;
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struct frame_unwind_table
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{
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frame_unwind_p_ftype **p;
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int middle;
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int nr;
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};
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/* Append a predicate to the end of the table. */
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static void
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append_predicate (struct frame_unwind_table *table, frame_unwind_p_ftype *p)
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{
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table->p = xrealloc (table->p, ((table->nr + 1)
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* sizeof (frame_unwind_p_ftype *)));
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table->p[table->nr] = p;
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table->nr++;
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}
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static void *
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frame_unwind_init (struct gdbarch *gdbarch)
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{
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struct frame_unwind_table *table = XCALLOC (1, struct frame_unwind_table);
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append_predicate (table, dummy_frame_p);
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return table;
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}
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static void
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frame_unwind_free (struct gdbarch *gdbarch, void *data)
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{
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struct frame_unwind_table *table =
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gdbarch_data (gdbarch, frame_unwind_data);
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xfree (table->p);
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xfree (table);
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}
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void
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frame_unwind_append_predicate (struct gdbarch *gdbarch,
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frame_unwind_p_ftype *p)
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{
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struct frame_unwind_table *table =
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gdbarch_data (gdbarch, frame_unwind_data);
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if (table == NULL)
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{
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/* ULGH, called during architecture initialization. Patch
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things up. */
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table = frame_unwind_init (gdbarch);
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set_gdbarch_data (gdbarch, frame_unwind_data, table);
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}
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append_predicate (table, p);
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}
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const struct frame_unwind *
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frame_unwind_find_by_pc (struct gdbarch *gdbarch, CORE_ADDR pc)
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{
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int i;
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struct frame_unwind_table *table =
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gdbarch_data (gdbarch, frame_unwind_data);
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/* Seriously old code. Don't even try to use this new mechanism. */
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if (!DEPRECATED_USE_GENERIC_DUMMY_FRAMES)
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return trad_frame_unwind;
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for (i = 0; i < table->nr; i++)
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{
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const struct frame_unwind *desc = table->p[i] (pc);
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if (desc != NULL)
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return desc;
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}
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return trad_frame_unwind;
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}
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void
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_initialize_frame_unwind (void)
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{
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frame_unwind_data = register_gdbarch_data (frame_unwind_init,
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frame_unwind_free);
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}
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