| /* Definitions for frame address handler, for GDB, the GNU debugger. |
| |
| Copyright (C) 2003-2004, 2007-2012 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "defs.h" |
| #include "frame-base.h" |
| #include "frame.h" |
| #include "gdb_obstack.h" |
| |
| /* A default frame base implementations. If it wasn't for the old |
| DEPRECATED_FRAME_LOCALS_ADDRESS and DEPRECATED_FRAME_ARGS_ADDRESS, |
| these could be combined into a single function. All architectures |
| really need to override this. */ |
| |
| static CORE_ADDR |
| default_frame_base_address (struct frame_info *this_frame, void **this_cache) |
| { |
| return get_frame_base (this_frame); /* sigh! */ |
| } |
| |
| static CORE_ADDR |
| default_frame_locals_address (struct frame_info *this_frame, void **this_cache) |
| { |
| return default_frame_base_address (this_frame, this_cache); |
| } |
| |
| static CORE_ADDR |
| default_frame_args_address (struct frame_info *this_frame, void **this_cache) |
| { |
| return default_frame_base_address (this_frame, this_cache); |
| } |
| |
| const struct frame_base default_frame_base = { |
| NULL, /* No parent. */ |
| default_frame_base_address, |
| default_frame_locals_address, |
| default_frame_args_address |
| }; |
| |
| static struct gdbarch_data *frame_base_data; |
| |
| struct frame_base_table_entry |
| { |
| frame_base_sniffer_ftype *sniffer; |
| struct frame_base_table_entry *next; |
| }; |
| |
| struct frame_base_table |
| { |
| struct frame_base_table_entry *head; |
| struct frame_base_table_entry **tail; |
| const struct frame_base *default_base; |
| }; |
| |
| static void * |
| frame_base_init (struct obstack *obstack) |
| { |
| struct frame_base_table *table |
| = OBSTACK_ZALLOC (obstack, struct frame_base_table); |
| |
| table->tail = &table->head; |
| table->default_base = &default_frame_base; |
| return table; |
| } |
| |
| void |
| frame_base_append_sniffer (struct gdbarch *gdbarch, |
| frame_base_sniffer_ftype *sniffer) |
| { |
| struct frame_base_table *table = gdbarch_data (gdbarch, frame_base_data); |
| |
| (*table->tail) |
| = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct frame_base_table_entry); |
| (*table->tail)->sniffer = sniffer; |
| table->tail = &(*table->tail)->next; |
| } |
| |
| void |
| frame_base_set_default (struct gdbarch *gdbarch, |
| const struct frame_base *default_base) |
| { |
| struct frame_base_table *table = gdbarch_data (gdbarch, frame_base_data); |
| |
| table->default_base = default_base; |
| } |
| |
| const struct frame_base * |
| frame_base_find_by_frame (struct frame_info *this_frame) |
| { |
| struct gdbarch *gdbarch = get_frame_arch (this_frame); |
| struct frame_base_table *table = gdbarch_data (gdbarch, frame_base_data); |
| struct frame_base_table_entry *entry; |
| |
| for (entry = table->head; entry != NULL; entry = entry->next) |
| { |
| const struct frame_base *desc = NULL; |
| |
| desc = entry->sniffer (this_frame); |
| if (desc != NULL) |
| return desc; |
| } |
| return table->default_base; |
| } |
| |
| extern initialize_file_ftype _initialize_frame_base; /* -Wmissing-prototypes */ |
| |
| void |
| _initialize_frame_base (void) |
| { |
| frame_base_data = gdbarch_data_register_pre_init (frame_base_init); |
| } |