Commit | Line | Data |
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ce3a066d | 1 | /* Inferior process information for the remote server for GDB. |
0fb0cc75 | 2 | Copyright (C) 2002, 2005, 2007, 2008, 2009 Free Software Foundation, Inc. |
ce3a066d DJ |
3 | |
4 | Contributed by MontaVista Software. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
ce3a066d DJ |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
ce3a066d DJ |
20 | |
21 | #include <stdlib.h> | |
22 | ||
23 | #include "server.h" | |
24 | ||
0d62e5e8 | 25 | struct thread_info |
ce3a066d | 26 | { |
0d62e5e8 | 27 | struct inferior_list_entry entry; |
611cb4a5 | 28 | void *target_data; |
c04a1aa8 | 29 | void *regcache_data; |
a06660f7 | 30 | unsigned int gdb_id; |
ce3a066d DJ |
31 | }; |
32 | ||
0d62e5e8 | 33 | struct inferior_list all_threads; |
255e7678 DJ |
34 | struct inferior_list all_dlls; |
35 | int dlls_changed; | |
0d62e5e8 DJ |
36 | |
37 | struct thread_info *current_inferior; | |
38 | ||
39 | #define get_thread(inf) ((struct thread_info *)(inf)) | |
255e7678 | 40 | #define get_dll(inf) ((struct dll_info *)(inf)) |
0d62e5e8 DJ |
41 | |
42 | void | |
43 | add_inferior_to_list (struct inferior_list *list, | |
44 | struct inferior_list_entry *new_inferior) | |
45 | { | |
46 | new_inferior->next = NULL; | |
47 | if (list->tail != NULL) | |
48 | list->tail->next = new_inferior; | |
49 | else | |
50 | list->head = new_inferior; | |
51 | list->tail = new_inferior; | |
52 | } | |
53 | ||
54 | void | |
55 | for_each_inferior (struct inferior_list *list, | |
56 | void (*action) (struct inferior_list_entry *)) | |
57 | { | |
58 | struct inferior_list_entry *cur = list->head, *next; | |
59 | ||
60 | while (cur != NULL) | |
61 | { | |
62 | next = cur->next; | |
63 | (*action) (cur); | |
64 | cur = next; | |
65 | } | |
66 | } | |
ce3a066d | 67 | |
0d62e5e8 DJ |
68 | void |
69 | remove_inferior (struct inferior_list *list, | |
70 | struct inferior_list_entry *entry) | |
71 | { | |
72 | struct inferior_list_entry **cur; | |
ce3a066d | 73 | |
0d62e5e8 DJ |
74 | if (list->head == entry) |
75 | { | |
76 | list->head = entry->next; | |
77 | if (list->tail == entry) | |
78 | list->tail = list->head; | |
79 | return; | |
80 | } | |
81 | ||
82 | cur = &list->head; | |
83 | while (*cur && (*cur)->next != entry) | |
84 | cur = &(*cur)->next; | |
85 | ||
86 | if (*cur == NULL) | |
87 | return; | |
ce3a066d | 88 | |
0d62e5e8 DJ |
89 | (*cur)->next = entry->next; |
90 | ||
91 | if (list->tail == entry) | |
92 | list->tail = *cur; | |
93 | } | |
94 | ||
95 | void | |
a06660f7 | 96 | add_thread (unsigned long thread_id, void *target_data, unsigned int gdb_id) |
0d62e5e8 | 97 | { |
bca929d3 | 98 | struct thread_info *new_thread = xmalloc (sizeof (*new_thread)); |
0d62e5e8 DJ |
99 | |
100 | memset (new_thread, 0, sizeof (*new_thread)); | |
101 | ||
102 | new_thread->entry.id = thread_id; | |
103 | ||
104 | add_inferior_to_list (&all_threads, & new_thread->entry); | |
255e7678 | 105 | |
ce3a066d | 106 | if (current_inferior == NULL) |
0d62e5e8 | 107 | current_inferior = new_thread; |
ce3a066d | 108 | |
0d62e5e8 DJ |
109 | new_thread->target_data = target_data; |
110 | set_inferior_regcache_data (new_thread, new_register_cache ()); | |
a06660f7 DJ |
111 | new_thread->gdb_id = gdb_id; |
112 | } | |
113 | ||
114 | unsigned int | |
115 | thread_id_to_gdb_id (unsigned long thread_id) | |
116 | { | |
117 | struct inferior_list_entry *inf = all_threads.head; | |
118 | ||
119 | while (inf != NULL) | |
120 | { | |
121 | struct thread_info *thread = get_thread (inf); | |
122 | if (inf->id == thread_id) | |
123 | return thread->gdb_id; | |
124 | inf = inf->next; | |
125 | } | |
126 | ||
127 | return 0; | |
128 | } | |
129 | ||
130 | unsigned int | |
131 | thread_to_gdb_id (struct thread_info *thread) | |
132 | { | |
133 | return thread->gdb_id; | |
134 | } | |
135 | ||
dae5f5cf DJ |
136 | struct thread_info * |
137 | gdb_id_to_thread (unsigned int gdb_id) | |
a06660f7 DJ |
138 | { |
139 | struct inferior_list_entry *inf = all_threads.head; | |
140 | ||
141 | while (inf != NULL) | |
142 | { | |
143 | struct thread_info *thread = get_thread (inf); | |
144 | if (thread->gdb_id == gdb_id) | |
dae5f5cf | 145 | return thread; |
a06660f7 DJ |
146 | inf = inf->next; |
147 | } | |
148 | ||
dae5f5cf DJ |
149 | return NULL; |
150 | } | |
151 | ||
152 | unsigned long | |
153 | gdb_id_to_thread_id (unsigned int gdb_id) | |
154 | { | |
155 | struct thread_info *thread = gdb_id_to_thread (gdb_id); | |
156 | ||
157 | return thread ? thread->entry.id : 0; | |
0d62e5e8 | 158 | } |
c04a1aa8 | 159 | |
0d62e5e8 DJ |
160 | static void |
161 | free_one_thread (struct inferior_list_entry *inf) | |
162 | { | |
163 | struct thread_info *thread = get_thread (inf); | |
164 | free_register_cache (inferior_regcache_data (thread)); | |
165 | free (thread); | |
166 | } | |
167 | ||
168 | void | |
169 | remove_thread (struct thread_info *thread) | |
170 | { | |
171 | remove_inferior (&all_threads, (struct inferior_list_entry *) thread); | |
172 | free_one_thread (&thread->entry); | |
ce3a066d DJ |
173 | } |
174 | ||
0d62e5e8 DJ |
175 | struct inferior_list_entry * |
176 | find_inferior (struct inferior_list *list, | |
177 | int (*func) (struct inferior_list_entry *, void *), void *arg) | |
178 | { | |
179 | struct inferior_list_entry *inf = list->head; | |
ce3a066d | 180 | |
0d62e5e8 | 181 | while (inf != NULL) |
ce3a066d | 182 | { |
0d62e5e8 DJ |
183 | if ((*func) (inf, arg)) |
184 | return inf; | |
185 | inf = inf->next; | |
186 | } | |
611cb4a5 | 187 | |
0d62e5e8 DJ |
188 | return NULL; |
189 | } | |
611cb4a5 | 190 | |
0d62e5e8 | 191 | struct inferior_list_entry * |
a1928bad | 192 | find_inferior_id (struct inferior_list *list, unsigned long id) |
0d62e5e8 DJ |
193 | { |
194 | struct inferior_list_entry *inf = list->head; | |
195 | ||
196 | while (inf != NULL) | |
197 | { | |
198 | if (inf->id == id) | |
199 | return inf; | |
200 | inf = inf->next; | |
ce3a066d DJ |
201 | } |
202 | ||
0d62e5e8 | 203 | return NULL; |
ce3a066d | 204 | } |
611cb4a5 DJ |
205 | |
206 | void * | |
0d62e5e8 | 207 | inferior_target_data (struct thread_info *inferior) |
611cb4a5 DJ |
208 | { |
209 | return inferior->target_data; | |
210 | } | |
211 | ||
212 | void | |
0d62e5e8 | 213 | set_inferior_target_data (struct thread_info *inferior, void *data) |
611cb4a5 DJ |
214 | { |
215 | inferior->target_data = data; | |
216 | } | |
c04a1aa8 DJ |
217 | |
218 | void * | |
0d62e5e8 | 219 | inferior_regcache_data (struct thread_info *inferior) |
c04a1aa8 DJ |
220 | { |
221 | return inferior->regcache_data; | |
222 | } | |
223 | ||
224 | void | |
0d62e5e8 | 225 | set_inferior_regcache_data (struct thread_info *inferior, void *data) |
c04a1aa8 DJ |
226 | { |
227 | inferior->regcache_data = data; | |
228 | } | |
255e7678 DJ |
229 | |
230 | static void | |
231 | free_one_dll (struct inferior_list_entry *inf) | |
232 | { | |
233 | struct dll_info *dll = get_dll (inf); | |
234 | if (dll->name != NULL) | |
235 | free (dll->name); | |
236 | free (dll); | |
237 | } | |
238 | ||
239 | /* Find a DLL with the same name and/or base address. A NULL name in | |
240 | the key is ignored; so is an all-ones base address. */ | |
241 | ||
242 | static int | |
243 | match_dll (struct inferior_list_entry *inf, void *arg) | |
244 | { | |
245 | struct dll_info *iter = (void *) inf; | |
246 | struct dll_info *key = arg; | |
247 | ||
248 | if (key->base_addr != ~(CORE_ADDR) 0 | |
249 | && iter->base_addr == key->base_addr) | |
250 | return 1; | |
251 | else if (key->name != NULL | |
252 | && iter->name != NULL | |
253 | && strcmp (key->name, iter->name) == 0) | |
254 | return 1; | |
255 | ||
256 | return 0; | |
257 | } | |
258 | ||
259 | /* Record a newly loaded DLL at BASE_ADDR. */ | |
260 | ||
261 | void | |
262 | loaded_dll (const char *name, CORE_ADDR base_addr) | |
263 | { | |
bca929d3 | 264 | struct dll_info *new_dll = xmalloc (sizeof (*new_dll)); |
255e7678 DJ |
265 | memset (new_dll, 0, sizeof (*new_dll)); |
266 | ||
267 | new_dll->entry.id = -1; | |
268 | ||
bca929d3 | 269 | new_dll->name = xstrdup (name); |
255e7678 DJ |
270 | new_dll->base_addr = base_addr; |
271 | ||
272 | add_inferior_to_list (&all_dlls, &new_dll->entry); | |
273 | dlls_changed = 1; | |
274 | } | |
275 | ||
276 | /* Record that the DLL with NAME and BASE_ADDR has been unloaded. */ | |
277 | ||
278 | void | |
279 | unloaded_dll (const char *name, CORE_ADDR base_addr) | |
280 | { | |
281 | struct dll_info *dll; | |
282 | struct dll_info key_dll; | |
283 | ||
284 | /* Be careful not to put the key DLL in any list. */ | |
285 | key_dll.name = (char *) name; | |
286 | key_dll.base_addr = base_addr; | |
287 | ||
288 | dll = (void *) find_inferior (&all_dlls, match_dll, &key_dll); | |
289 | remove_inferior (&all_dlls, &dll->entry); | |
290 | free_one_dll (&dll->entry); | |
291 | dlls_changed = 1; | |
292 | } | |
293 | ||
294 | #define clear_list(LIST) \ | |
295 | do { (LIST)->head = (LIST)->tail = NULL; } while (0) | |
296 | ||
297 | void | |
298 | clear_inferiors (void) | |
299 | { | |
300 | for_each_inferior (&all_threads, free_one_thread); | |
301 | for_each_inferior (&all_dlls, free_one_dll); | |
302 | ||
303 | clear_list (&all_threads); | |
304 | clear_list (&all_dlls); | |
7284e1be UW |
305 | |
306 | current_inferior = NULL; | |
255e7678 | 307 | } |
24a09b5f DJ |
308 | |
309 | /* Two utility functions for a truly degenerate inferior_list: a simple | |
310 | PID listing. */ | |
311 | ||
312 | void | |
313 | add_pid_to_list (struct inferior_list *list, unsigned long pid) | |
314 | { | |
315 | struct inferior_list_entry *new_entry; | |
316 | ||
bca929d3 | 317 | new_entry = xmalloc (sizeof (struct inferior_list_entry)); |
24a09b5f DJ |
318 | new_entry->id = pid; |
319 | add_inferior_to_list (list, new_entry); | |
320 | } | |
321 | ||
322 | int | |
323 | pull_pid_from_list (struct inferior_list *list, unsigned long pid) | |
324 | { | |
325 | struct inferior_list_entry *new_entry; | |
326 | ||
327 | new_entry = find_inferior_id (list, pid); | |
328 | if (new_entry == NULL) | |
329 | return 0; | |
330 | else | |
331 | { | |
332 | remove_inferior (list, new_entry); | |
333 | free (new_entry); | |
334 | return 1; | |
335 | } | |
336 | } |