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c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
3 | Copyright (C) 1994-1998, Andrew Cagney <cagney@highland.com.au> | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | ||
19 | */ | |
20 | ||
21 | ||
22 | #include "hw-main.h" | |
23 | #include "hw-base.h" | |
24 | ||
25 | #include "sim-assert.h" | |
26 | ||
27 | struct hw_instance_data { | |
28 | hw_finish_instance_method *to_finish; | |
29 | struct hw_instance *instances; | |
30 | }; | |
31 | ||
32 | static hw_finish_instance_method abort_hw_finish_instance; | |
33 | ||
34 | void | |
35 | create_hw_instance_data (struct hw *me) | |
36 | { | |
37 | me->instances_of_hw = HW_ZALLOC (me, struct hw_instance_data); | |
38 | set_hw_finish_instance (me, abort_hw_finish_instance); | |
39 | } | |
40 | ||
41 | void | |
42 | delete_hw_instance_data (struct hw *me) | |
43 | { | |
44 | /* NOP */ | |
45 | } | |
46 | ||
47 | ||
48 | static void | |
49 | abort_hw_finish_instance (struct hw *hw, | |
50 | struct hw_instance *instance) | |
51 | { | |
52 | hw_abort (hw, "no instance finish method"); | |
53 | } | |
54 | ||
55 | void | |
56 | set_hw_finish_instance (struct hw *me, | |
57 | hw_finish_instance_method *finish) | |
58 | { | |
59 | me->instances_of_hw->to_finish = finish; | |
60 | } | |
61 | ||
62 | ||
63 | #if 0 | |
64 | void | |
65 | clean_hw_instances (struct hw *me) | |
66 | { | |
67 | struct hw_instance **instance = &me->instances; | |
68 | while (*instance != NULL) | |
69 | { | |
70 | struct hw_instance *old_instance = *instance; | |
71 | hw_instance_delete (old_instance); | |
72 | instance = &me->instances; | |
73 | } | |
74 | } | |
75 | #endif | |
76 | ||
77 | ||
78 | void | |
79 | hw_instance_delete (struct hw_instance *instance) | |
80 | { | |
81 | #if 1 | |
82 | hw_abort (hw_instance_hw (instance), "not implemented"); | |
83 | #else | |
84 | struct hw *me = hw_instance_hw (instance); | |
85 | if (instance->to_instance_delete == NULL) | |
86 | hw_abort (me, "no delete method"); | |
87 | instance->method->delete(instance); | |
88 | if (instance->args != NULL) | |
89 | zfree (instance->args); | |
90 | if (instance->path != NULL) | |
91 | zfree (instance->path); | |
92 | if (instance->child == NULL) | |
93 | { | |
94 | /* only remove leaf nodes */ | |
95 | struct hw_instance **curr = &me->instances; | |
96 | while (*curr != instance) | |
97 | { | |
98 | ASSERT (*curr != NULL); | |
99 | curr = &(*curr)->next; | |
100 | } | |
101 | *curr = instance->next; | |
102 | } | |
103 | else | |
104 | { | |
105 | /* check it isn't in the instance list */ | |
106 | struct hw_instance *curr = me->instances; | |
107 | while (curr != NULL) | |
108 | { | |
109 | ASSERT(curr != instance); | |
110 | curr = curr->next; | |
111 | } | |
112 | /* unlink the child */ | |
113 | ASSERT (instance->child->parent == instance); | |
114 | instance->child->parent = NULL; | |
115 | } | |
116 | cap_remove (me->ihandles, instance); | |
117 | zfree (instance); | |
118 | #endif | |
119 | } | |
120 | ||
121 | ||
122 | static int | |
123 | panic_hw_instance_read (struct hw_instance *instance, | |
124 | void *addr, | |
125 | unsigned_word len) | |
126 | { | |
127 | hw_abort (hw_instance_hw (instance), "no read method"); | |
128 | return -1; | |
129 | } | |
130 | ||
131 | ||
132 | ||
133 | static int | |
134 | panic_hw_instance_write (struct hw_instance *instance, | |
135 | const void *addr, | |
136 | unsigned_word len) | |
137 | { | |
138 | hw_abort (hw_instance_hw (instance), "no write method"); | |
139 | return -1; | |
140 | } | |
141 | ||
142 | ||
143 | static int | |
144 | panic_hw_instance_seek (struct hw_instance *instance, | |
145 | unsigned_word pos_hi, | |
146 | unsigned_word pos_lo) | |
147 | { | |
148 | hw_abort (hw_instance_hw (instance), "no seek method"); | |
149 | return -1; | |
150 | } | |
151 | ||
152 | ||
153 | int | |
154 | hw_instance_call_method (struct hw_instance *instance, | |
155 | const char *method_name, | |
156 | int n_stack_args, | |
157 | unsigned_cell stack_args[/*n_stack_args*/], | |
158 | int n_stack_returns, | |
159 | unsigned_cell stack_returns[/*n_stack_args*/]) | |
160 | { | |
161 | #if 1 | |
162 | hw_abort (hw_instance_hw (instance), "not implemented"); | |
163 | return -1; | |
164 | #else | |
165 | struct hw *me = instance->owner; | |
166 | const hw_instance_methods *method = instance->method->methods; | |
167 | if (method == NULL) | |
168 | { | |
169 | hw_abort (me, "no methods (want %s)", method_name); | |
170 | } | |
171 | while (method->name != NULL) | |
172 | { | |
173 | if (strcmp(method->name, method_name) == 0) | |
174 | { | |
175 | return method->method (instance, | |
176 | n_stack_args, stack_args, | |
177 | n_stack_returns, stack_returns); | |
178 | } | |
179 | method++; | |
180 | } | |
181 | hw_abort (me, "no %s method", method_name); | |
182 | return 0; | |
183 | #endif | |
184 | } | |
185 | ||
186 | ||
187 | #define set_hw_instance_read(instance, method)\ | |
188 | ((instance)->to_instance_read = (method)) | |
189 | ||
190 | #define set_hw_instance_write(instance, method)\ | |
191 | ((instance)->to_instance_write = (method)) | |
192 | ||
193 | #define set_hw_instance_seek(instance, method)\ | |
194 | ((instance)->to_instance_seek = (method)) | |
195 | ||
196 | ||
197 | #if 0 | |
198 | static void | |
199 | set_hw_instance_finish (struct hw *me, | |
200 | hw_instance_finish_method *method) | |
201 | { | |
202 | if (me->instances_of_hw == NULL) | |
203 | me->instances_of_hw = HW_ZALLOC (me, struct hw_instance_data); | |
204 | me->instances_of_hw->to_finish = method; | |
205 | } | |
206 | #endif | |
207 | ||
208 | ||
209 | struct hw_instance * | |
210 | hw_instance_create (struct hw *me, | |
211 | struct hw_instance *parent, | |
212 | const char *path, | |
213 | const char *args) | |
214 | { | |
215 | struct hw_instance *instance = ZALLOC (struct hw_instance); | |
216 | /*instance->unit*/ | |
217 | /* link this instance into the devices list */ | |
218 | instance->hw_of_instance = me; | |
219 | instance->parent_of_instance = NULL; | |
220 | /* link this instance into the front of the devices instance list */ | |
221 | instance->sibling_of_instance = me->instances_of_hw->instances; | |
222 | me->instances_of_hw->instances = instance; | |
223 | if (parent != NULL) | |
224 | { | |
225 | ASSERT (parent->child_of_instance == NULL); | |
226 | parent->child_of_instance = instance; | |
227 | instance->parent_of_instance = parent; | |
228 | } | |
229 | instance->args_of_instance = hw_strdup (me, args); | |
230 | instance->path_of_instance = hw_strdup (me, path); | |
231 | set_hw_instance_read (instance, panic_hw_instance_read); | |
232 | set_hw_instance_write (instance, panic_hw_instance_write); | |
233 | set_hw_instance_seek (instance, panic_hw_instance_seek); | |
234 | hw_handle_add_ihandle (me, instance); | |
235 | me->instances_of_hw->to_finish (me, instance); | |
236 | return instance; | |
237 | } | |
238 | ||
239 | ||
240 | struct hw_instance * | |
241 | hw_instance_interceed (struct hw_instance *parent, | |
242 | const char *path, | |
243 | const char *args) | |
244 | { | |
245 | #if 1 | |
246 | return NULL; | |
247 | #else | |
248 | struct hw_instance *instance = ZALLOC (struct hw_instance); | |
249 | /*instance->unit*/ | |
250 | /* link this instance into the devices list */ | |
251 | if (me != NULL) | |
252 | { | |
253 | ASSERT (parent == NULL); | |
254 | instance->hw_of_instance = me; | |
255 | instance->parent_of_instance = NULL; | |
256 | /* link this instance into the front of the devices instance list */ | |
257 | instance->sibling_of_instance = me->instances_of_hw->instances; | |
258 | me->instances_of_hw->instances = instance; | |
259 | } | |
260 | if (parent != NULL) | |
261 | { | |
262 | struct hw_instance **previous; | |
263 | ASSERT (parent->child_of_instance == NULL); | |
264 | parent->child_of_instance = instance; | |
265 | instance->owner = parent->owner; | |
266 | instance->parent_of_instance = parent; | |
267 | /* in the devices instance list replace the parent instance with | |
268 | this one */ | |
269 | instance->next = parent->next; | |
270 | /* replace parent with this new node */ | |
271 | previous = &instance->owner->instances; | |
272 | while (*previous != parent) | |
273 | { | |
274 | ASSERT (*previous != NULL); | |
275 | previous = &(*previous)->next; | |
276 | } | |
277 | *previous = instance; | |
278 | } | |
279 | instance->data = data; | |
280 | instance->args = (args == NULL ? NULL : (char *) strdup(args)); | |
281 | instance->path = (path == NULL ? NULL : (char *) strdup(path)); | |
282 | cap_add (instance->owner->ihandles, instance); | |
283 | return instance; | |
284 | #endif | |
285 | } |