Commit | Line | Data |
---|---|---|
da62e633 AC |
1 | /* Definitions for frame address handler, for GDB, the GNU debugger. |
2 | ||
42a4f53d | 3 | Copyright (C) 2003-2019 Free Software Foundation, Inc. |
da62e633 AC |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
da62e633 AC |
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 | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
da62e633 AC |
19 | |
20 | #include "defs.h" | |
d55e5aa6 TT |
21 | |
22 | /* Local non-gdb includes. */ | |
da62e633 AC |
23 | #include "frame-base.h" |
24 | #include "frame.h" | |
0cad6aec | 25 | #include "gdb_obstack.h" |
da62e633 AC |
26 | |
27 | /* A default frame base implementations. If it wasn't for the old | |
42efa47a AC |
28 | DEPRECATED_FRAME_LOCALS_ADDRESS and DEPRECATED_FRAME_ARGS_ADDRESS, |
29 | these could be combined into a single function. All architectures | |
30 | really need to override this. */ | |
da62e633 AC |
31 | |
32 | static CORE_ADDR | |
669fac23 | 33 | default_frame_base_address (struct frame_info *this_frame, void **this_cache) |
da62e633 | 34 | { |
da62e633 AC |
35 | return get_frame_base (this_frame); /* sigh! */ |
36 | } | |
37 | ||
38 | static CORE_ADDR | |
669fac23 | 39 | default_frame_locals_address (struct frame_info *this_frame, void **this_cache) |
da62e633 | 40 | { |
669fac23 | 41 | return default_frame_base_address (this_frame, this_cache); |
da62e633 AC |
42 | } |
43 | ||
44 | static CORE_ADDR | |
669fac23 | 45 | default_frame_args_address (struct frame_info *this_frame, void **this_cache) |
da62e633 | 46 | { |
669fac23 | 47 | return default_frame_base_address (this_frame, this_cache); |
da62e633 AC |
48 | } |
49 | ||
50 | const struct frame_base default_frame_base = { | |
51 | NULL, /* No parent. */ | |
52 | default_frame_base_address, | |
53 | default_frame_locals_address, | |
54 | default_frame_args_address | |
55 | }; | |
56 | ||
57 | static struct gdbarch_data *frame_base_data; | |
58 | ||
0cad6aec AC |
59 | struct frame_base_table_entry |
60 | { | |
61 | frame_base_sniffer_ftype *sniffer; | |
62 | struct frame_base_table_entry *next; | |
63 | }; | |
64 | ||
da62e633 AC |
65 | struct frame_base_table |
66 | { | |
0cad6aec AC |
67 | struct frame_base_table_entry *head; |
68 | struct frame_base_table_entry **tail; | |
da62e633 | 69 | const struct frame_base *default_base; |
da62e633 AC |
70 | }; |
71 | ||
72 | static void * | |
0cad6aec | 73 | frame_base_init (struct obstack *obstack) |
da62e633 | 74 | { |
0cad6aec AC |
75 | struct frame_base_table *table |
76 | = OBSTACK_ZALLOC (obstack, struct frame_base_table); | |
bb9bcb69 | 77 | |
0cad6aec | 78 | table->tail = &table->head; |
da62e633 AC |
79 | table->default_base = &default_frame_base; |
80 | return table; | |
81 | } | |
82 | ||
e8a89fe2 AC |
83 | void |
84 | frame_base_append_sniffer (struct gdbarch *gdbarch, | |
85 | frame_base_sniffer_ftype *sniffer) | |
86 | { | |
9a3c8263 SM |
87 | struct frame_base_table *table |
88 | = (struct frame_base_table *) gdbarch_data (gdbarch, frame_base_data); | |
bb9bcb69 | 89 | |
3e43a32a MS |
90 | (*table->tail) |
91 | = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct frame_base_table_entry); | |
0cad6aec AC |
92 | (*table->tail)->sniffer = sniffer; |
93 | table->tail = &(*table->tail)->next; | |
da62e633 AC |
94 | } |
95 | ||
96 | void | |
97 | frame_base_set_default (struct gdbarch *gdbarch, | |
98 | const struct frame_base *default_base) | |
99 | { | |
9a3c8263 SM |
100 | struct frame_base_table *table |
101 | = (struct frame_base_table *) gdbarch_data (gdbarch, frame_base_data); | |
bb9bcb69 | 102 | |
da62e633 AC |
103 | table->default_base = default_base; |
104 | } | |
105 | ||
106 | const struct frame_base * | |
669fac23 | 107 | frame_base_find_by_frame (struct frame_info *this_frame) |
da62e633 | 108 | { |
669fac23 | 109 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
9a3c8263 SM |
110 | struct frame_base_table *table |
111 | = (struct frame_base_table *) gdbarch_data (gdbarch, frame_base_data); | |
0cad6aec AC |
112 | struct frame_base_table_entry *entry; |
113 | ||
114 | for (entry = table->head; entry != NULL; entry = entry->next) | |
da62e633 | 115 | { |
e8a89fe2 | 116 | const struct frame_base *desc = NULL; |
bb9bcb69 | 117 | |
669fac23 | 118 | desc = entry->sniffer (this_frame); |
da62e633 AC |
119 | if (desc != NULL) |
120 | return desc; | |
121 | } | |
122 | return table->default_base; | |
123 | } | |
124 | ||
125 | void | |
126 | _initialize_frame_base (void) | |
127 | { | |
0cad6aec | 128 | frame_base_data = gdbarch_data_register_pre_init (frame_base_init); |
da62e633 | 129 | } |