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b85e4829 AC |
1 | /* The common simulator framework for GDB, the GNU Debugger. |
2 | ||
1d506c26 | 3 | Copyright 2002-2024 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 | 21 | |
6df01ab8 MF |
22 | /* This must come before any other includes. */ |
23 | #include "defs.h" | |
c906108c SS |
24 | |
25 | #include "hw-main.h" | |
26 | #include "hw-base.h" | |
27 | ||
c2c6d25f | 28 | #include "sim-io.h" |
c906108c SS |
29 | #include "sim-assert.h" |
30 | ||
12c4cbd5 MF |
31 | struct hw_instance_data |
32 | { | |
c906108c SS |
33 | hw_finish_instance_method *to_finish; |
34 | struct hw_instance *instances; | |
35 | }; | |
36 | ||
37 | static hw_finish_instance_method abort_hw_finish_instance; | |
38 | ||
39 | void | |
40 | create_hw_instance_data (struct hw *me) | |
41 | { | |
42 | me->instances_of_hw = HW_ZALLOC (me, struct hw_instance_data); | |
43 | set_hw_finish_instance (me, abort_hw_finish_instance); | |
44 | } | |
45 | ||
46 | void | |
47 | delete_hw_instance_data (struct hw *me) | |
48 | { | |
49 | /* NOP */ | |
50 | } | |
51 | ||
52 | ||
53 | static void | |
54 | abort_hw_finish_instance (struct hw *hw, | |
55 | struct hw_instance *instance) | |
56 | { | |
57 | hw_abort (hw, "no instance finish method"); | |
58 | } | |
59 | ||
60 | void | |
61 | set_hw_finish_instance (struct hw *me, | |
62 | hw_finish_instance_method *finish) | |
63 | { | |
64 | me->instances_of_hw->to_finish = finish; | |
65 | } | |
66 | ||
67 | ||
68 | #if 0 | |
69 | void | |
70 | clean_hw_instances (struct hw *me) | |
71 | { | |
72 | struct hw_instance **instance = &me->instances; | |
73 | while (*instance != NULL) | |
74 | { | |
75 | struct hw_instance *old_instance = *instance; | |
76 | hw_instance_delete (old_instance); | |
77 | instance = &me->instances; | |
78 | } | |
79 | } | |
80 | #endif | |
81 | ||
82 | ||
83 | void | |
84 | hw_instance_delete (struct hw_instance *instance) | |
85 | { | |
86 | #if 1 | |
87 | hw_abort (hw_instance_hw (instance), "not implemented"); | |
88 | #else | |
89 | struct hw *me = hw_instance_hw (instance); | |
90 | if (instance->to_instance_delete == NULL) | |
91 | hw_abort (me, "no delete method"); | |
34b47c38 | 92 | instance->method->delete (instance); |
c906108c | 93 | if (instance->args != NULL) |
d79fe0d6 | 94 | free (instance->args); |
c906108c | 95 | if (instance->path != NULL) |
d79fe0d6 | 96 | free (instance->path); |
c906108c SS |
97 | if (instance->child == NULL) |
98 | { | |
99 | /* only remove leaf nodes */ | |
100 | struct hw_instance **curr = &me->instances; | |
101 | while (*curr != instance) | |
102 | { | |
103 | ASSERT (*curr != NULL); | |
104 | curr = &(*curr)->next; | |
105 | } | |
106 | *curr = instance->next; | |
107 | } | |
108 | else | |
109 | { | |
110 | /* check it isn't in the instance list */ | |
111 | struct hw_instance *curr = me->instances; | |
112 | while (curr != NULL) | |
113 | { | |
34b47c38 | 114 | ASSERT (curr != instance); |
c906108c SS |
115 | curr = curr->next; |
116 | } | |
117 | /* unlink the child */ | |
118 | ASSERT (instance->child->parent == instance); | |
119 | instance->child->parent = NULL; | |
120 | } | |
121 | cap_remove (me->ihandles, instance); | |
d79fe0d6 | 122 | free (instance); |
c906108c SS |
123 | #endif |
124 | } | |
125 | ||
126 | ||
127 | static int | |
128 | panic_hw_instance_read (struct hw_instance *instance, | |
129 | void *addr, | |
130 | unsigned_word len) | |
131 | { | |
132 | hw_abort (hw_instance_hw (instance), "no read method"); | |
133 | return -1; | |
134 | } | |
135 | ||
136 | ||
137 | ||
138 | static int | |
139 | panic_hw_instance_write (struct hw_instance *instance, | |
140 | const void *addr, | |
141 | unsigned_word len) | |
142 | { | |
143 | hw_abort (hw_instance_hw (instance), "no write method"); | |
144 | return -1; | |
145 | } | |
146 | ||
147 | ||
148 | static int | |
149 | panic_hw_instance_seek (struct hw_instance *instance, | |
150 | unsigned_word pos_hi, | |
151 | unsigned_word pos_lo) | |
152 | { | |
153 | hw_abort (hw_instance_hw (instance), "no seek method"); | |
154 | return -1; | |
155 | } | |
156 | ||
157 | ||
158 | int | |
159 | hw_instance_call_method (struct hw_instance *instance, | |
160 | const char *method_name, | |
161 | int n_stack_args, | |
028f6515 | 162 | unsigned_cell stack_args[/*n_stack_args*/], |
c906108c SS |
163 | int n_stack_returns, |
164 | unsigned_cell stack_returns[/*n_stack_args*/]) | |
165 | { | |
166 | #if 1 | |
167 | hw_abort (hw_instance_hw (instance), "not implemented"); | |
168 | return -1; | |
169 | #else | |
170 | struct hw *me = instance->owner; | |
171 | const hw_instance_methods *method = instance->method->methods; | |
172 | if (method == NULL) | |
173 | { | |
174 | hw_abort (me, "no methods (want %s)", method_name); | |
175 | } | |
176 | while (method->name != NULL) | |
177 | { | |
34b47c38 | 178 | if (strcmp (method->name, method_name) == 0) |
c906108c SS |
179 | { |
180 | return method->method (instance, | |
181 | n_stack_args, stack_args, | |
182 | n_stack_returns, stack_returns); | |
183 | } | |
184 | method++; | |
185 | } | |
186 | hw_abort (me, "no %s method", method_name); | |
187 | return 0; | |
188 | #endif | |
189 | } | |
190 | ||
191 | ||
192 | #define set_hw_instance_read(instance, method)\ | |
193 | ((instance)->to_instance_read = (method)) | |
194 | ||
195 | #define set_hw_instance_write(instance, method)\ | |
196 | ((instance)->to_instance_write = (method)) | |
197 | ||
198 | #define set_hw_instance_seek(instance, method)\ | |
199 | ((instance)->to_instance_seek = (method)) | |
200 | ||
201 | ||
202 | #if 0 | |
203 | static void | |
204 | set_hw_instance_finish (struct hw *me, | |
205 | hw_instance_finish_method *method) | |
206 | { | |
207 | if (me->instances_of_hw == NULL) | |
208 | me->instances_of_hw = HW_ZALLOC (me, struct hw_instance_data); | |
209 | me->instances_of_hw->to_finish = method; | |
210 | } | |
211 | #endif | |
212 | ||
213 | ||
214 | struct hw_instance * | |
215 | hw_instance_create (struct hw *me, | |
216 | struct hw_instance *parent, | |
217 | const char *path, | |
218 | const char *args) | |
219 | { | |
220 | struct hw_instance *instance = ZALLOC (struct hw_instance); | |
221 | /*instance->unit*/ | |
222 | /* link this instance into the devices list */ | |
223 | instance->hw_of_instance = me; | |
224 | instance->parent_of_instance = NULL; | |
225 | /* link this instance into the front of the devices instance list */ | |
226 | instance->sibling_of_instance = me->instances_of_hw->instances; | |
227 | me->instances_of_hw->instances = instance; | |
228 | if (parent != NULL) | |
229 | { | |
230 | ASSERT (parent->child_of_instance == NULL); | |
231 | parent->child_of_instance = instance; | |
232 | instance->parent_of_instance = parent; | |
233 | } | |
234 | instance->args_of_instance = hw_strdup (me, args); | |
235 | instance->path_of_instance = hw_strdup (me, path); | |
236 | set_hw_instance_read (instance, panic_hw_instance_read); | |
237 | set_hw_instance_write (instance, panic_hw_instance_write); | |
238 | set_hw_instance_seek (instance, panic_hw_instance_seek); | |
239 | hw_handle_add_ihandle (me, instance); | |
240 | me->instances_of_hw->to_finish (me, instance); | |
241 | return instance; | |
242 | } | |
243 | ||
244 | ||
245 | struct hw_instance * | |
246 | hw_instance_interceed (struct hw_instance *parent, | |
247 | const char *path, | |
248 | const char *args) | |
249 | { | |
250 | #if 1 | |
251 | return NULL; | |
252 | #else | |
253 | struct hw_instance *instance = ZALLOC (struct hw_instance); | |
254 | /*instance->unit*/ | |
255 | /* link this instance into the devices list */ | |
256 | if (me != NULL) | |
257 | { | |
258 | ASSERT (parent == NULL); | |
259 | instance->hw_of_instance = me; | |
260 | instance->parent_of_instance = NULL; | |
261 | /* link this instance into the front of the devices instance list */ | |
262 | instance->sibling_of_instance = me->instances_of_hw->instances; | |
263 | me->instances_of_hw->instances = instance; | |
264 | } | |
265 | if (parent != NULL) | |
266 | { | |
267 | struct hw_instance **previous; | |
268 | ASSERT (parent->child_of_instance == NULL); | |
269 | parent->child_of_instance = instance; | |
270 | instance->owner = parent->owner; | |
271 | instance->parent_of_instance = parent; | |
272 | /* in the devices instance list replace the parent instance with | |
273 | this one */ | |
274 | instance->next = parent->next; | |
275 | /* replace parent with this new node */ | |
276 | previous = &instance->owner->instances; | |
277 | while (*previous != parent) | |
278 | { | |
279 | ASSERT (*previous != NULL); | |
280 | previous = &(*previous)->next; | |
281 | } | |
282 | *previous = instance; | |
283 | } | |
284 | instance->data = data; | |
34b47c38 MF |
285 | instance->args = (args == NULL ? NULL : (char *) strdup (args)); |
286 | instance->path = (path == NULL ? NULL : (char *) strdup (path)); | |
c906108c SS |
287 | cap_add (instance->owner->ihandles, instance); |
288 | return instance; | |
289 | #endif | |
290 | } |