1 /* The common simulator framework for GDB, the GNU Debugger.
3 Copyright 2002, 2007, 2008 Free Software Foundation, Inc.
5 Contributed by Andrew Cagney and Red Hat.
7 This file is part of GDB.
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
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
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.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
27 #include "sim-assert.h"
29 struct hw_instance_data {
30 hw_finish_instance_method *to_finish;
31 struct hw_instance *instances;
34 static hw_finish_instance_method abort_hw_finish_instance;
37 create_hw_instance_data (struct hw *me)
39 me->instances_of_hw = HW_ZALLOC (me, struct hw_instance_data);
40 set_hw_finish_instance (me, abort_hw_finish_instance);
44 delete_hw_instance_data (struct hw *me)
51 abort_hw_finish_instance (struct hw *hw,
52 struct hw_instance *instance)
54 hw_abort (hw, "no instance finish method");
58 set_hw_finish_instance (struct hw *me,
59 hw_finish_instance_method *finish)
61 me->instances_of_hw->to_finish = finish;
67 clean_hw_instances (struct hw *me)
69 struct hw_instance **instance = &me->instances;
70 while (*instance != NULL)
72 struct hw_instance *old_instance = *instance;
73 hw_instance_delete (old_instance);
74 instance = &me->instances;
81 hw_instance_delete (struct hw_instance *instance)
84 hw_abort (hw_instance_hw (instance), "not implemented");
86 struct hw *me = hw_instance_hw (instance);
87 if (instance->to_instance_delete == NULL)
88 hw_abort (me, "no delete method");
89 instance->method->delete(instance);
90 if (instance->args != NULL)
91 zfree (instance->args);
92 if (instance->path != NULL)
93 zfree (instance->path);
94 if (instance->child == NULL)
96 /* only remove leaf nodes */
97 struct hw_instance **curr = &me->instances;
98 while (*curr != instance)
100 ASSERT (*curr != NULL);
101 curr = &(*curr)->next;
103 *curr = instance->next;
107 /* check it isn't in the instance list */
108 struct hw_instance *curr = me->instances;
111 ASSERT(curr != instance);
114 /* unlink the child */
115 ASSERT (instance->child->parent == instance);
116 instance->child->parent = NULL;
118 cap_remove (me->ihandles, instance);
125 panic_hw_instance_read (struct hw_instance *instance,
129 hw_abort (hw_instance_hw (instance), "no read method");
136 panic_hw_instance_write (struct hw_instance *instance,
140 hw_abort (hw_instance_hw (instance), "no write method");
146 panic_hw_instance_seek (struct hw_instance *instance,
147 unsigned_word pos_hi,
148 unsigned_word pos_lo)
150 hw_abort (hw_instance_hw (instance), "no seek method");
156 hw_instance_call_method (struct hw_instance *instance,
157 const char *method_name,
159 unsigned_cell stack_args[/*n_stack_args*/],
161 unsigned_cell stack_returns[/*n_stack_args*/])
164 hw_abort (hw_instance_hw (instance), "not implemented");
167 struct hw *me = instance->owner;
168 const hw_instance_methods *method = instance->method->methods;
171 hw_abort (me, "no methods (want %s)", method_name);
173 while (method->name != NULL)
175 if (strcmp(method->name, method_name) == 0)
177 return method->method (instance,
178 n_stack_args, stack_args,
179 n_stack_returns, stack_returns);
183 hw_abort (me, "no %s method", method_name);
189 #define set_hw_instance_read(instance, method)\
190 ((instance)->to_instance_read = (method))
192 #define set_hw_instance_write(instance, method)\
193 ((instance)->to_instance_write = (method))
195 #define set_hw_instance_seek(instance, method)\
196 ((instance)->to_instance_seek = (method))
201 set_hw_instance_finish (struct hw *me,
202 hw_instance_finish_method *method)
204 if (me->instances_of_hw == NULL)
205 me->instances_of_hw = HW_ZALLOC (me, struct hw_instance_data);
206 me->instances_of_hw->to_finish = method;
212 hw_instance_create (struct hw *me,
213 struct hw_instance *parent,
217 struct hw_instance *instance = ZALLOC (struct hw_instance);
219 /* link this instance into the devices list */
220 instance->hw_of_instance = me;
221 instance->parent_of_instance = NULL;
222 /* link this instance into the front of the devices instance list */
223 instance->sibling_of_instance = me->instances_of_hw->instances;
224 me->instances_of_hw->instances = instance;
227 ASSERT (parent->child_of_instance == NULL);
228 parent->child_of_instance = instance;
229 instance->parent_of_instance = parent;
231 instance->args_of_instance = hw_strdup (me, args);
232 instance->path_of_instance = hw_strdup (me, path);
233 set_hw_instance_read (instance, panic_hw_instance_read);
234 set_hw_instance_write (instance, panic_hw_instance_write);
235 set_hw_instance_seek (instance, panic_hw_instance_seek);
236 hw_handle_add_ihandle (me, instance);
237 me->instances_of_hw->to_finish (me, instance);
243 hw_instance_interceed (struct hw_instance *parent,
250 struct hw_instance *instance = ZALLOC (struct hw_instance);
252 /* link this instance into the devices list */
255 ASSERT (parent == NULL);
256 instance->hw_of_instance = me;
257 instance->parent_of_instance = NULL;
258 /* link this instance into the front of the devices instance list */
259 instance->sibling_of_instance = me->instances_of_hw->instances;
260 me->instances_of_hw->instances = instance;
264 struct hw_instance **previous;
265 ASSERT (parent->child_of_instance == NULL);
266 parent->child_of_instance = instance;
267 instance->owner = parent->owner;
268 instance->parent_of_instance = parent;
269 /* in the devices instance list replace the parent instance with
271 instance->next = parent->next;
272 /* replace parent with this new node */
273 previous = &instance->owner->instances;
274 while (*previous != parent)
276 ASSERT (*previous != NULL);
277 previous = &(*previous)->next;
279 *previous = instance;
281 instance->data = data;
282 instance->args = (args == NULL ? NULL : (char *) strdup(args));
283 instance->path = (path == NULL ? NULL : (char *) strdup(path));
284 cap_add (instance->owner->ihandles, instance);