Commit | Line | Data |
---|---|---|
b85e4829 AC |
1 | /* The common simulator framework for GDB, the GNU Debugger. |
2 | ||
3666a048 | 3 | Copyright 2002-2021 Free Software Foundation, Inc. |
b85e4829 AC |
4 | |
5 | Contributed by Andrew Cagney and Red Hat. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
4744ac1b | 11 | the Free Software Foundation; either version 3 of the License, or |
b85e4829 AC |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
4744ac1b | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | ||
23 | #include "hw-main.h" | |
24 | #include "hw-base.h" | |
25 | ||
b6061d4d | 26 | #include <stdlib.h> |
c906108c | 27 | |
12c4cbd5 MF |
28 | struct hw_handle_mapping |
29 | { | |
c906108c SS |
30 | cell_word external; |
31 | struct hw *phandle; | |
32 | struct hw_instance *ihandle; | |
33 | struct hw_handle_mapping *next; | |
34 | }; | |
35 | ||
36 | ||
12c4cbd5 MF |
37 | struct hw_handle_data |
38 | { | |
c906108c SS |
39 | int nr_mappings; |
40 | struct hw_handle_mapping *mappings; | |
41 | }; | |
42 | ||
43 | void | |
44 | create_hw_handle_data (struct hw *hw) | |
45 | { | |
46 | if (hw_parent (hw) == NULL) | |
47 | { | |
48 | hw->handles_of_hw = HW_ZALLOC (hw, struct hw_handle_data); | |
49 | } | |
50 | else | |
51 | { | |
52 | hw->handles_of_hw = hw_root (hw)->handles_of_hw; | |
53 | } | |
54 | } | |
55 | ||
56 | void | |
57 | delete_hw_handle_data (struct hw *hw) | |
58 | { | |
59 | /* NULL */ | |
60 | } | |
61 | ||
62 | ||
63 | ||
64 | #if 0 | |
65 | void | |
66 | hw_handle_init (struct hw *hw) | |
67 | { | |
68 | struct hw_handle_mapping *current_map = db->mappings; | |
69 | if (current_map != NULL) | |
70 | { | |
71 | db->nr_mappings = db->mappings->external; | |
72 | /* verify that the mappings that were not removed are in | |
73 | sequence down to nr 1 */ | |
74 | while (current_map->next != NULL) | |
75 | { | |
76 | if (current_map->external != current_map->next->external + 1) | |
77 | error ("hw_handle: hw_handle database possibly corrupt"); | |
78 | current_map = current_map->next; | |
79 | } | |
80 | ASSERT (current_map->next == NULL); | |
81 | if (current_map->external != 1) | |
82 | error ("hw_handle: hw_handle database possibly corrupt"); | |
83 | } | |
84 | else | |
85 | { | |
86 | db->nr_mappings = 0; | |
87 | } | |
88 | } | |
89 | #endif | |
90 | ||
91 | ||
92 | struct hw_instance * | |
93 | hw_handle_ihandle2 (struct hw *hw, | |
94 | cell_word external) | |
95 | { | |
96 | struct hw_handle_data *db = hw->handles_of_hw; | |
97 | struct hw_handle_mapping *current_map = db->mappings; | |
98 | while (current_map != NULL) | |
99 | { | |
100 | if (current_map->external == external) | |
101 | return current_map->ihandle; | |
102 | current_map = current_map->next; | |
103 | } | |
104 | return (void*)0; | |
105 | } | |
106 | ||
107 | ||
108 | struct hw * | |
109 | hw_handle_phandle2 (struct hw *hw, | |
110 | cell_word external) | |
111 | { | |
112 | struct hw_handle_data *db = hw->handles_of_hw; | |
113 | struct hw_handle_mapping *current_map = db->mappings; | |
114 | while (current_map != NULL) | |
115 | { | |
116 | if (current_map->external == external) | |
117 | return current_map->phandle; | |
118 | current_map = current_map->next; | |
119 | } | |
120 | return (void*)0; | |
121 | } | |
122 | ||
123 | ||
124 | cell_word | |
125 | hw_handle_2ihandle (struct hw *hw, | |
126 | struct hw_instance *internal) | |
127 | { | |
128 | struct hw_handle_data *db = hw->handles_of_hw; | |
129 | struct hw_handle_mapping *current_map = db->mappings; | |
130 | while (current_map != NULL) | |
131 | { | |
132 | if (current_map->ihandle == internal) | |
133 | return current_map->external; | |
134 | current_map = current_map->next; | |
135 | } | |
136 | return 0; | |
137 | } | |
138 | ||
139 | ||
140 | cell_word | |
141 | hw_handle_2phandle (struct hw *hw, | |
142 | struct hw *internal) | |
143 | { | |
144 | struct hw_handle_data *db = hw->handles_of_hw; | |
145 | struct hw_handle_mapping *current_map = db->mappings; | |
146 | while (current_map != NULL) | |
147 | { | |
148 | if (current_map->phandle == internal) | |
149 | return current_map->external; | |
150 | current_map = current_map->next; | |
151 | } | |
152 | return 0; | |
153 | } | |
154 | ||
155 | ||
156 | void | |
157 | hw_handle_add_ihandle (struct hw *hw, | |
158 | struct hw_instance *internal) | |
159 | { | |
160 | struct hw_handle_data *db = hw->handles_of_hw; | |
028f6515 | 161 | if (hw_handle_2ihandle (hw, internal) != 0) |
c906108c SS |
162 | { |
163 | hw_abort (hw, "attempting to add an ihandle already in the data base"); | |
164 | } | |
165 | else | |
166 | { | |
167 | /* insert at the front making things in decending order */ | |
168 | struct hw_handle_mapping *new_map = ZALLOC (struct hw_handle_mapping); | |
169 | new_map->next = db->mappings; | |
170 | new_map->ihandle = internal; | |
171 | db->nr_mappings += 1; | |
172 | new_map->external = db->nr_mappings; | |
173 | db->mappings = new_map; | |
174 | } | |
175 | } | |
176 | ||
177 | ||
178 | void | |
179 | hw_handle_add_phandle (struct hw *hw, | |
180 | struct hw *internal) | |
181 | { | |
182 | struct hw_handle_data *db = hw->handles_of_hw; | |
028f6515 | 183 | if (hw_handle_2phandle (hw, internal) != 0) |
c906108c SS |
184 | { |
185 | hw_abort (hw, "attempting to add a phandle already in the data base"); | |
186 | } | |
187 | else | |
188 | { | |
189 | /* insert at the front making things in decending order */ | |
190 | struct hw_handle_mapping *new_map = ZALLOC (struct hw_handle_mapping); | |
191 | new_map->next = db->mappings; | |
192 | new_map->phandle = internal; | |
193 | db->nr_mappings += 1; | |
194 | new_map->external = db->nr_mappings; | |
195 | db->mappings = new_map; | |
196 | } | |
197 | } | |
198 | ||
199 | ||
200 | void | |
201 | hw_handle_remove_ihandle (struct hw *hw, | |
202 | struct hw_instance *internal) | |
203 | { | |
204 | struct hw_handle_data *db = hw->handles_of_hw; | |
205 | struct hw_handle_mapping **current_map = &db->mappings; | |
206 | while (*current_map != NULL) | |
207 | { | |
208 | if ((*current_map)->ihandle == internal) | |
209 | { | |
210 | struct hw_handle_mapping *delete = *current_map; | |
211 | *current_map = delete->next; | |
d79fe0d6 | 212 | free (delete); |
c906108c SS |
213 | return; |
214 | } | |
215 | current_map = &(*current_map)->next; | |
216 | } | |
217 | hw_abort (hw, "attempt to remove nonexistant ihandle"); | |
218 | } | |
219 | ||
220 | ||
221 | void | |
222 | hw_handle_remove_phandle (struct hw *hw, | |
223 | struct hw *internal) | |
224 | { | |
225 | struct hw_handle_data *db = hw->handles_of_hw; | |
226 | struct hw_handle_mapping **current_map = &db->mappings; | |
227 | while (*current_map != NULL) | |
228 | { | |
229 | if ((*current_map)->phandle == internal) | |
230 | { | |
231 | struct hw_handle_mapping *delete = *current_map; | |
232 | *current_map = delete->next; | |
d79fe0d6 | 233 | free (delete); |
c906108c SS |
234 | return; |
235 | } | |
236 | current_map = &(*current_map)->next; | |
237 | } | |
238 | hw_abort (hw, "attempt to remove nonexistant phandle"); | |
239 | } |