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b85e4829 AC |
1 | /* The common simulator framework for GDB, the GNU Debugger. |
2 | ||
42a4f53d | 3 | Copyright 2002-2019 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 SH |
26 | #if HAVE_STDLIB_H |
27 | #include <stdlib.h> | |
28 | #endif | |
c906108c | 29 | |
12c4cbd5 MF |
30 | struct hw_handle_mapping |
31 | { | |
c906108c SS |
32 | cell_word external; |
33 | struct hw *phandle; | |
34 | struct hw_instance *ihandle; | |
35 | struct hw_handle_mapping *next; | |
36 | }; | |
37 | ||
38 | ||
12c4cbd5 MF |
39 | struct hw_handle_data |
40 | { | |
c906108c SS |
41 | int nr_mappings; |
42 | struct hw_handle_mapping *mappings; | |
43 | }; | |
44 | ||
45 | void | |
46 | create_hw_handle_data (struct hw *hw) | |
47 | { | |
48 | if (hw_parent (hw) == NULL) | |
49 | { | |
50 | hw->handles_of_hw = HW_ZALLOC (hw, struct hw_handle_data); | |
51 | } | |
52 | else | |
53 | { | |
54 | hw->handles_of_hw = hw_root (hw)->handles_of_hw; | |
55 | } | |
56 | } | |
57 | ||
58 | void | |
59 | delete_hw_handle_data (struct hw *hw) | |
60 | { | |
61 | /* NULL */ | |
62 | } | |
63 | ||
64 | ||
65 | ||
66 | #if 0 | |
67 | void | |
68 | hw_handle_init (struct hw *hw) | |
69 | { | |
70 | struct hw_handle_mapping *current_map = db->mappings; | |
71 | if (current_map != NULL) | |
72 | { | |
73 | db->nr_mappings = db->mappings->external; | |
74 | /* verify that the mappings that were not removed are in | |
75 | sequence down to nr 1 */ | |
76 | while (current_map->next != NULL) | |
77 | { | |
78 | if (current_map->external != current_map->next->external + 1) | |
79 | error ("hw_handle: hw_handle database possibly corrupt"); | |
80 | current_map = current_map->next; | |
81 | } | |
82 | ASSERT (current_map->next == NULL); | |
83 | if (current_map->external != 1) | |
84 | error ("hw_handle: hw_handle database possibly corrupt"); | |
85 | } | |
86 | else | |
87 | { | |
88 | db->nr_mappings = 0; | |
89 | } | |
90 | } | |
91 | #endif | |
92 | ||
93 | ||
94 | struct hw_instance * | |
95 | hw_handle_ihandle2 (struct hw *hw, | |
96 | cell_word external) | |
97 | { | |
98 | struct hw_handle_data *db = hw->handles_of_hw; | |
99 | struct hw_handle_mapping *current_map = db->mappings; | |
100 | while (current_map != NULL) | |
101 | { | |
102 | if (current_map->external == external) | |
103 | return current_map->ihandle; | |
104 | current_map = current_map->next; | |
105 | } | |
106 | return (void*)0; | |
107 | } | |
108 | ||
109 | ||
110 | struct hw * | |
111 | hw_handle_phandle2 (struct hw *hw, | |
112 | cell_word external) | |
113 | { | |
114 | struct hw_handle_data *db = hw->handles_of_hw; | |
115 | struct hw_handle_mapping *current_map = db->mappings; | |
116 | while (current_map != NULL) | |
117 | { | |
118 | if (current_map->external == external) | |
119 | return current_map->phandle; | |
120 | current_map = current_map->next; | |
121 | } | |
122 | return (void*)0; | |
123 | } | |
124 | ||
125 | ||
126 | cell_word | |
127 | hw_handle_2ihandle (struct hw *hw, | |
128 | struct hw_instance *internal) | |
129 | { | |
130 | struct hw_handle_data *db = hw->handles_of_hw; | |
131 | struct hw_handle_mapping *current_map = db->mappings; | |
132 | while (current_map != NULL) | |
133 | { | |
134 | if (current_map->ihandle == internal) | |
135 | return current_map->external; | |
136 | current_map = current_map->next; | |
137 | } | |
138 | return 0; | |
139 | } | |
140 | ||
141 | ||
142 | cell_word | |
143 | hw_handle_2phandle (struct hw *hw, | |
144 | struct hw *internal) | |
145 | { | |
146 | struct hw_handle_data *db = hw->handles_of_hw; | |
147 | struct hw_handle_mapping *current_map = db->mappings; | |
148 | while (current_map != NULL) | |
149 | { | |
150 | if (current_map->phandle == internal) | |
151 | return current_map->external; | |
152 | current_map = current_map->next; | |
153 | } | |
154 | return 0; | |
155 | } | |
156 | ||
157 | ||
158 | void | |
159 | hw_handle_add_ihandle (struct hw *hw, | |
160 | struct hw_instance *internal) | |
161 | { | |
162 | struct hw_handle_data *db = hw->handles_of_hw; | |
028f6515 | 163 | if (hw_handle_2ihandle (hw, internal) != 0) |
c906108c SS |
164 | { |
165 | hw_abort (hw, "attempting to add an ihandle already in the data base"); | |
166 | } | |
167 | else | |
168 | { | |
169 | /* insert at the front making things in decending order */ | |
170 | struct hw_handle_mapping *new_map = ZALLOC (struct hw_handle_mapping); | |
171 | new_map->next = db->mappings; | |
172 | new_map->ihandle = internal; | |
173 | db->nr_mappings += 1; | |
174 | new_map->external = db->nr_mappings; | |
175 | db->mappings = new_map; | |
176 | } | |
177 | } | |
178 | ||
179 | ||
180 | void | |
181 | hw_handle_add_phandle (struct hw *hw, | |
182 | struct hw *internal) | |
183 | { | |
184 | struct hw_handle_data *db = hw->handles_of_hw; | |
028f6515 | 185 | if (hw_handle_2phandle (hw, internal) != 0) |
c906108c SS |
186 | { |
187 | hw_abort (hw, "attempting to add a phandle already in the data base"); | |
188 | } | |
189 | else | |
190 | { | |
191 | /* insert at the front making things in decending order */ | |
192 | struct hw_handle_mapping *new_map = ZALLOC (struct hw_handle_mapping); | |
193 | new_map->next = db->mappings; | |
194 | new_map->phandle = internal; | |
195 | db->nr_mappings += 1; | |
196 | new_map->external = db->nr_mappings; | |
197 | db->mappings = new_map; | |
198 | } | |
199 | } | |
200 | ||
201 | ||
202 | void | |
203 | hw_handle_remove_ihandle (struct hw *hw, | |
204 | struct hw_instance *internal) | |
205 | { | |
206 | struct hw_handle_data *db = hw->handles_of_hw; | |
207 | struct hw_handle_mapping **current_map = &db->mappings; | |
208 | while (*current_map != NULL) | |
209 | { | |
210 | if ((*current_map)->ihandle == internal) | |
211 | { | |
212 | struct hw_handle_mapping *delete = *current_map; | |
213 | *current_map = delete->next; | |
d79fe0d6 | 214 | free (delete); |
c906108c SS |
215 | return; |
216 | } | |
217 | current_map = &(*current_map)->next; | |
218 | } | |
219 | hw_abort (hw, "attempt to remove nonexistant ihandle"); | |
220 | } | |
221 | ||
222 | ||
223 | void | |
224 | hw_handle_remove_phandle (struct hw *hw, | |
225 | struct hw *internal) | |
226 | { | |
227 | struct hw_handle_data *db = hw->handles_of_hw; | |
228 | struct hw_handle_mapping **current_map = &db->mappings; | |
229 | while (*current_map != NULL) | |
230 | { | |
231 | if ((*current_map)->phandle == internal) | |
232 | { | |
233 | struct hw_handle_mapping *delete = *current_map; | |
234 | *current_map = delete->next; | |
d79fe0d6 | 235 | free (delete); |
c906108c SS |
236 | return; |
237 | } | |
238 | current_map = &(*current_map)->next; | |
239 | } | |
240 | hw_abort (hw, "attempt to remove nonexistant phandle"); | |
241 | } |