Rev 2816 | Rev 2818 | Go to most recent revision | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 2816 | Rev 2817 | ||
---|---|---|---|
1 | /** @addtogroup generic |
1 | /** @addtogroup generic |
2 | * @{ |
2 | * @{ |
3 | */ |
3 | */ |
4 | 4 | ||
5 | /** |
5 | /** |
6 | * @file |
6 | * @file |
7 | * @brief Tdebug. |
7 | * @brief Tdebug. |
8 | */ |
8 | */ |
9 | 9 | ||
10 | #include <console/klog.h> |
10 | #include <console/klog.h> |
11 | #include <proc/task.h> |
11 | #include <proc/task.h> |
12 | #include <proc/thread.h> |
12 | #include <proc/thread.h> |
13 | #include <arch.h> |
13 | #include <arch.h> |
14 | #include <errno.h> |
14 | #include <errno.h> |
15 | #include <ipc/ipc.h> |
15 | #include <ipc/ipc.h> |
16 | #include <syscall/copy.h> |
16 | #include <syscall/copy.h> |
17 | #include <udebug/udebug.h> |
17 | #include <udebug/udebug.h> |
18 | #include <udebug/udebug_ipc.h> |
18 | #include <udebug/udebug_ipc.h> |
19 | 19 | ||
20 | static task_t *get_lock_callee_task(phone_t *phone) |
20 | static task_t *get_lock_callee_task(phone_t *phone) |
21 | { |
21 | { |
22 | answerbox_t *answerbox; |
22 | answerbox_t *answerbox; |
23 | task_t *ta; |
23 | task_t *ta; |
24 | 24 | ||
25 | // FIXME: locking!!! |
25 | // FIXME: locking!!! |
26 | 26 | ||
27 | answerbox = phone->callee; |
27 | answerbox = phone->callee; |
28 | ta = answerbox->task; |
28 | ta = answerbox->task; |
29 | 29 | ||
30 | spinlock_lock(&ta->lock); |
30 | spinlock_lock(&ta->lock); |
31 | 31 | ||
32 | return ta; |
32 | return ta; |
33 | } |
33 | } |
34 | 34 | ||
35 | static int udebug_rp_begin(call_t *call, phone_t *phone) |
35 | static int udebug_rp_begin(call_t *call, phone_t *phone) |
36 | { |
36 | { |
37 | task_t *ta; |
37 | task_t *ta; |
38 | 38 | ||
39 | klog_printf("debug_begin()"); |
39 | klog_printf("debug_begin()"); |
40 | 40 | ||
41 | ta = get_lock_callee_task(phone); |
41 | ta = get_lock_callee_task(phone); |
42 | klog_printf("debugging task %llu", ta->taskid); |
42 | klog_printf("debugging task %llu", ta->taskid); |
43 | 43 | ||
44 | if (ta->being_debugged != false) { |
44 | if (ta->being_debugged != false) { |
45 | spinlock_unlock(&ta->lock); |
45 | spinlock_unlock(&ta->lock); |
46 | klog_printf("debug_begin(): busy error"); |
46 | klog_printf("debug_begin(): busy error"); |
47 | return EBUSY; |
47 | return EBUSY; |
48 | } |
48 | } |
49 | 49 | ||
50 | ta->being_debugged = true; |
50 | ta->being_debugged = true; |
51 | ta->stop_request = true; |
51 | ta->stop_request = true; |
52 | ta->debug_begin_call = call; |
52 | ta->debug_begin_call = call; |
53 | 53 | ||
54 | if (ta->not_stoppable_count == 0) { |
54 | if (ta->not_stoppable_count == 0) { |
55 | ta->debug_begin_call = NULL; |
55 | ta->debug_begin_call = NULL; |
56 | ta->stop_request = false; |
56 | ta->stop_request = false; |
57 | spinlock_unlock(&ta->lock); |
57 | spinlock_unlock(&ta->lock); |
58 | klog_printf("debug_begin(): immediate backsend"); |
58 | klog_printf("debug_begin(): immediate backsend"); |
59 | return 1; /* actually we need backsend with 0 retval */ |
59 | return 1; /* actually we need backsend with 0 retval */ |
60 | } |
60 | } |
61 | 61 | ||
62 | spinlock_unlock(&ta->lock); |
62 | spinlock_unlock(&ta->lock); |
63 | 63 | ||
64 | klog_printf("debug_begin() done (wait for stoppability)"); |
64 | klog_printf("debug_begin() done (wait for stoppability)"); |
65 | return 0; |
65 | return 0; |
66 | } |
66 | } |
67 | 67 | ||
68 | static int udebug_rp_go(call_t *call, phone_t *phone) |
68 | static int udebug_rp_go(call_t *call, phone_t *phone) |
69 | { |
69 | { |
70 | thread_t *t; |
70 | thread_t *t; |
71 | task_t *ta; |
71 | task_t *ta; |
72 | 72 | ||
73 | klog_printf("debug_go()"); |
73 | klog_printf("debug_go()"); |
74 | ta = get_lock_callee_task(phone); |
74 | ta = get_lock_callee_task(phone); |
75 | 75 | ||
76 | // FIXME: must save this in thread struct, not task struct!!! |
76 | // FIXME: must save this in thread struct, not task struct!!! |
77 | ta->debug_go_call = call; |
77 | ta->debug_go_call = call; |
78 | t = (thread_t *) IPC_GET_ARG2(call->data); |
78 | t = (thread_t *) IPC_GET_ARG2(call->data); |
79 | if (!thread_exists(t)) { |
79 | if (!thread_exists(t)) { |
80 | spinlock_unlock(&ta->lock); |
80 | spinlock_unlock(&ta->lock); |
81 | return ENOENT; |
81 | return ENOENT; |
82 | } |
82 | } |
83 | 83 | ||
84 | klog_printf("debug_go(): waitq_wakeup"); |
84 | klog_printf("debug_go(): waitq_wakeup"); |
85 | waitq_wakeup(&t->go_wq, WAKEUP_FIRST); |
85 | waitq_wakeup(&t->go_wq, WAKEUP_FIRST); |
86 | 86 | ||
87 | spinlock_unlock(&ta->lock); |
87 | spinlock_unlock(&ta->lock); |
88 | 88 | ||
89 | return 0; /* no backsend */ |
89 | return 0; /* no backsend */ |
90 | } |
90 | } |
91 | 91 | ||
92 | static int udebug_rp_args_read(call_t *call, phone_t *phone) |
92 | static int udebug_rp_args_read(call_t *call, phone_t *phone) |
93 | { |
93 | { |
94 | thread_t *t; |
94 | thread_t *t; |
95 | task_t *ta; |
95 | task_t *ta; |
96 | void *uspace_buffer; |
96 | void *uspace_buffer; |
97 | unative_t to_copy; |
97 | unative_t to_copy; |
98 | int rc; |
98 | int rc; |
99 | 99 | ||
100 | klog_printf("debug_args_read()"); |
100 | klog_printf("debug_args_read()"); |
101 | // FIXME: verify task/thread state |
101 | // FIXME: verify task/thread state |
102 | 102 | ||
103 | ta = get_lock_callee_task(phone); |
103 | ta = get_lock_callee_task(phone); |
104 | klog_printf("task %llu", ta->taskid); |
104 | klog_printf("task %llu", ta->taskid); |
105 | t = (thread_t *) IPC_GET_ARG2(call->data); |
105 | t = (thread_t *) IPC_GET_ARG2(call->data); |
106 | if (!thread_exists(t)) { |
106 | if (!thread_exists(t)) { |
107 | spinlock_unlock(&ta->lock); |
107 | spinlock_unlock(&ta->lock); |
108 | return ENOENT; |
108 | return ENOENT; |
109 | } |
109 | } |
110 | 110 | ||
111 | uspace_buffer = (void *)IPC_GET_ARG3(call->data); |
111 | uspace_buffer = (void *)IPC_GET_ARG3(call->data); |
112 | to_copy = IPC_GET_ARG4(call->data); |
112 | to_copy = IPC_GET_ARG4(call->data); |
113 | if (to_copy > 6 * sizeof(unative_t)) to_copy = 6 * sizeof(unative_t); |
113 | if (to_copy > 6 * sizeof(unative_t)) to_copy = 6 * sizeof(unative_t); |
114 | 114 | ||
115 | rc = copy_to_uspace(uspace_buffer, t->syscall_args, to_copy); |
115 | rc = copy_to_uspace(uspace_buffer, t->syscall_args, to_copy); |
116 | if (rc != 0) { |
116 | if (rc != 0) { |
117 | spinlock_unlock(&ta->lock); |
117 | spinlock_unlock(&ta->lock); |
118 | klog_printf("debug_args_read() - copy failed"); |
118 | klog_printf("debug_args_read() - copy failed"); |
119 | return rc; |
119 | return rc; |
120 | } |
120 | } |
121 | 121 | ||
122 | spinlock_unlock(&ta->lock); |
122 | spinlock_unlock(&ta->lock); |
123 | 123 | ||
124 | IPC_SET_ARG1(call->data, to_copy); |
124 | IPC_SET_ARG1(call->data, to_copy); |
125 | 125 | ||
126 | klog_printf("debug_args_read() done"); |
126 | klog_printf("debug_args_read() done"); |
127 | return 1; /* actually need becksend with retval 0 */ |
127 | return 1; /* actually need becksend with retval 0 */ |
128 | } |
128 | } |
129 | 129 | ||
- | 130 | static int udebug_rp_regs_read(call_t *call, phone_t *phone) |
|
- | 131 | { |
|
- | 132 | thread_t *t; |
|
- | 133 | task_t *ta; |
|
- | 134 | void *uspace_buffer; |
|
- | 135 | unative_t to_copy; |
|
- | 136 | int rc; |
|
- | 137 | istate_t *state; |
|
- | 138 | ||
- | 139 | klog_printf("debug_regs_read()"); |
|
- | 140 | // FIXME: verify task/thread state |
|
- | 141 | ||
- | 142 | state = THREAD->uspace_state; |
|
- | 143 | if (state == NULL) { |
|
- | 144 | klog_printf("debug_regs_read() - istate not available"); |
|
- | 145 | return EBUSY; |
|
- | 146 | } |
|
- | 147 | ||
- | 148 | ta = get_lock_callee_task(phone); |
|
- | 149 | t = (thread_t *) IPC_GET_ARG2(call->data); |
|
- | 150 | if (!thread_exists(t)) { |
|
- | 151 | spinlock_unlock(&ta->lock); |
|
- | 152 | return ENOENT; |
|
- | 153 | } |
|
- | 154 | ||
- | 155 | uspace_buffer = (void *)IPC_GET_ARG3(call->data); |
|
- | 156 | to_copy = IPC_GET_ARG4(call->data); |
|
- | 157 | if (to_copy > sizeof(istate_t)) to_copy = sizeof(istate_t); |
|
- | 158 | ||
- | 159 | rc = copy_to_uspace(uspace_buffer, t->uspace_state, to_copy); |
|
- | 160 | if (rc != 0) { |
|
- | 161 | spinlock_unlock(&ta->lock); |
|
- | 162 | klog_printf("debug_regs_read() - copy failed"); |
|
- | 163 | return rc; |
|
- | 164 | } |
|
- | 165 | ||
- | 166 | spinlock_unlock(&ta->lock); |
|
- | 167 | ||
- | 168 | IPC_SET_ARG1(call->data, to_copy); |
|
- | 169 | IPC_SET_ARG2(call->data, sizeof(istate_t)); |
|
- | 170 | ||
- | 171 | klog_printf("debug_regs_read() done"); |
|
- | 172 | return 1; /* actually need becksend with retval 0 */ |
|
- | 173 | } |
|
- | 174 | ||
- | 175 | static int udebug_rp_regs_write(call_t *call, phone_t *phone) |
|
- | 176 | { |
|
- | 177 | thread_t *t; |
|
- | 178 | task_t *ta; |
|
- | 179 | void *uspace_data; |
|
- | 180 | unative_t to_copy; |
|
- | 181 | int rc; |
|
- | 182 | istate_t *state; |
|
- | 183 | ||
- | 184 | klog_printf("debug_regs_write()"); |
|
- | 185 | // FIXME: verify task/thread state |
|
- | 186 | ||
- | 187 | state = THREAD->uspace_state; |
|
- | 188 | if (state == NULL) { |
|
- | 189 | klog_printf("debug_regs_write() - istate not available"); |
|
- | 190 | return EBUSY; |
|
- | 191 | } |
|
- | 192 | ||
- | 193 | ta = get_lock_callee_task(phone); |
|
- | 194 | t = (thread_t *) IPC_GET_ARG2(call->data); |
|
- | 195 | if (!thread_exists(t)) { |
|
- | 196 | spinlock_unlock(&ta->lock); |
|
- | 197 | return ENOENT; |
|
- | 198 | } |
|
- | 199 | ||
- | 200 | uspace_data = (void *)IPC_GET_ARG3(call->data); |
|
- | 201 | to_copy = IPC_GET_ARG4(call->data); |
|
- | 202 | if (to_copy > sizeof(istate_t)) to_copy = sizeof(istate_t); |
|
- | 203 | ||
- | 204 | rc = copy_from_uspace(t->uspace_state, uspace_data, to_copy); |
|
- | 205 | if (rc != 0) { |
|
- | 206 | spinlock_unlock(&ta->lock); |
|
- | 207 | klog_printf("debug_regs_write() - copy failed"); |
|
- | 208 | return rc; |
|
- | 209 | } |
|
- | 210 | ||
- | 211 | spinlock_unlock(&ta->lock); |
|
- | 212 | ||
- | 213 | IPC_SET_ARG1(call->data, to_copy); |
|
- | 214 | IPC_SET_ARG2(call->data, sizeof(istate_t)); |
|
- | 215 | ||
- | 216 | klog_printf("debug_regs_write() done"); |
|
- | 217 | return 1; /* actually need becksend with retval 0 */ |
|
- | 218 | } |
|
- | 219 | ||
130 | static int udebug_rp_thread_read(call_t *call, phone_t *phone) |
220 | static int udebug_rp_thread_read(call_t *call, phone_t *phone) |
131 | { |
221 | { |
132 | thread_t *t; |
222 | thread_t *t; |
133 | link_t *cur; |
223 | link_t *cur; |
134 | task_t *ta; |
224 | task_t *ta; |
135 | unative_t *uspace_buffer; |
225 | unative_t *uspace_buffer; |
136 | unative_t to_copy; |
226 | unative_t to_copy; |
137 | int rc; |
227 | int rc; |
138 | unsigned copied, total; |
228 | unsigned copied, total; |
139 | unsigned buf_size; |
229 | unsigned buf_size; |
140 | unative_t tid; |
230 | unative_t tid; |
141 | 231 | ||
142 | klog_printf("debug_thread_read()"); |
232 | klog_printf("debug_thread_read()"); |
143 | // FIXME: verify task/thread state |
233 | // FIXME: verify task/thread state |
144 | 234 | ||
145 | ta = get_lock_callee_task(phone); |
235 | ta = get_lock_callee_task(phone); |
146 | klog_printf("task %llu", ta->taskid); |
236 | klog_printf("task %llu", ta->taskid); |
147 | 237 | ||
148 | uspace_buffer = (void *)IPC_GET_ARG2(call->data); |
238 | uspace_buffer = (void *)IPC_GET_ARG2(call->data); |
149 | buf_size = IPC_GET_ARG3(call->data); |
239 | buf_size = IPC_GET_ARG3(call->data); |
150 | 240 | ||
151 | copied = total = 0; |
241 | copied = total = 0; |
152 | for (cur = ta->th_head.next; cur != &ta->th_head; cur = cur->next) { |
242 | for (cur = ta->th_head.next; cur != &ta->th_head; cur = cur->next) { |
153 | t = list_get_instance(cur, thread_t, th_link); |
243 | t = list_get_instance(cur, thread_t, th_link); |
154 | 244 | ||
155 | /* Not interested in kernel threads */ |
245 | /* Not interested in kernel threads */ |
156 | if ((t->flags & THREAD_FLAG_USPACE) == 0) |
246 | if ((t->flags & THREAD_FLAG_USPACE) == 0) |
157 | continue; |
247 | continue; |
158 | 248 | ||
159 | /* Using thread struct pointer for identification */ |
249 | /* Using thread struct pointer for identification */ |
160 | tid = (unative_t) t; |
250 | tid = (unative_t) t; |
161 | 251 | ||
162 | to_copy = sizeof(unative_t); |
252 | to_copy = sizeof(unative_t); |
163 | if (copied + to_copy >= buf_size) |
253 | if (copied + to_copy >= buf_size) |
164 | to_copy = buf_size - copied; |
254 | to_copy = buf_size - copied; |
165 | 255 | ||
166 | if (to_copy > 0) { |
256 | if (to_copy > 0) { |
167 | rc = copy_to_uspace(uspace_buffer, &tid, to_copy); |
257 | rc = copy_to_uspace(uspace_buffer, &tid, to_copy); |
168 | if (rc != 0) { |
258 | if (rc != 0) { |
169 | spinlock_unlock(&ta->lock); |
259 | spinlock_unlock(&ta->lock); |
170 | klog_printf("debug_thread_read() - copy failed"); |
260 | klog_printf("debug_thread_read() - copy failed"); |
171 | return rc; |
261 | return rc; |
172 | } |
262 | } |
173 | } |
263 | } |
174 | 264 | ||
175 | ++uspace_buffer; |
265 | ++uspace_buffer; |
176 | total += sizeof(unative_t); |
266 | total += sizeof(unative_t); |
177 | copied += to_copy; |
267 | copied += to_copy; |
178 | } |
268 | } |
179 | 269 | ||
180 | spinlock_unlock(&ta->lock); |
270 | spinlock_unlock(&ta->lock); |
181 | 271 | ||
182 | IPC_SET_ARG1(call->data, copied); |
272 | IPC_SET_ARG1(call->data, copied); |
183 | IPC_SET_ARG2(call->data, total); |
273 | IPC_SET_ARG2(call->data, total); |
184 | 274 | ||
185 | klog_printf("debug_thread_read() done"); |
275 | klog_printf("debug_thread_read() done"); |
186 | return 1; /* actually need becksend with retval 0 */ |
276 | return 1; /* actually need becksend with retval 0 */ |
187 | } |
277 | } |
188 | 278 | ||
189 | int udebug_request_preprocess(call_t *call, phone_t *phone) |
279 | int udebug_request_preprocess(call_t *call, phone_t *phone) |
190 | { |
280 | { |
191 | int rc; |
281 | int rc; |
192 | 282 | ||
193 | switch (IPC_GET_ARG1(call->data)) { |
283 | switch (IPC_GET_ARG1(call->data)) { |
194 | case UDEBUG_M_BEGIN: |
284 | case UDEBUG_M_BEGIN: |
195 | rc = udebug_rp_begin(call, phone); |
285 | rc = udebug_rp_begin(call, phone); |
196 | return rc; |
286 | return rc; |
197 | case UDEBUG_M_GO: |
287 | case UDEBUG_M_GO: |
198 | rc = udebug_rp_go(call, phone); |
288 | rc = udebug_rp_go(call, phone); |
199 | return rc; |
289 | return rc; |
200 | case UDEBUG_M_ARGS_READ: |
290 | case UDEBUG_M_ARGS_READ: |
201 | rc = udebug_rp_args_read(call, phone); |
291 | rc = udebug_rp_args_read(call, phone); |
202 | return rc; |
292 | return rc; |
- | 293 | case UDEBUG_M_REGS_READ: |
|
- | 294 | rc = udebug_rp_regs_read(call, phone); |
|
- | 295 | return rc; |
|
- | 296 | case UDEBUG_M_REGS_WRITE: |
|
- | 297 | rc = udebug_rp_regs_write(call, phone); |
|
- | 298 | return rc; |
|
203 | case UDEBUG_M_THREAD_READ: |
299 | case UDEBUG_M_THREAD_READ: |
204 | rc = udebug_rp_thread_read(call, phone); |
300 | rc = udebug_rp_thread_read(call, phone); |
205 | return rc; |
301 | return rc; |
206 | default: |
302 | default: |
207 | break; |
303 | break; |
208 | } |
304 | } |
209 | 305 | ||
210 | return 0; |
306 | return 0; |
211 | } |
307 | } |
212 | 308 | ||
213 | static void udebug_receive_mem_read(call_t *call) |
309 | static void udebug_receive_mem_read(call_t *call) |
214 | { |
310 | { |
215 | unative_t uspace_dst; |
311 | unative_t uspace_dst; |
216 | void *uspace_ptr; |
312 | void *uspace_ptr; |
217 | unsigned size; |
313 | unsigned size; |
218 | void *buffer; |
314 | void *buffer; |
219 | int rc; |
315 | int rc; |
220 | 316 | ||
221 | klog_printf("debug_mem_read()"); |
317 | klog_printf("debug_mem_read()"); |
222 | uspace_dst = IPC_GET_ARG2(call->data); |
318 | uspace_dst = IPC_GET_ARG2(call->data); |
223 | uspace_ptr = (void *)IPC_GET_ARG3(call->data); |
319 | uspace_ptr = (void *)IPC_GET_ARG3(call->data); |
224 | size = IPC_GET_ARG4(call->data); |
320 | size = IPC_GET_ARG4(call->data); |
225 | 321 | ||
226 | buffer = malloc(size, 0); // ??? |
322 | buffer = malloc(size, 0); // ??? |
227 | klog_printf("debug_mem_read: src=%u, size=%u", uspace_ptr, size); |
323 | klog_printf("debug_mem_read: src=%u, size=%u", uspace_ptr, size); |
228 | 324 | ||
229 | /* NOTE: this is not strictly from a syscall... but that shouldn't |
325 | /* NOTE: this is not strictly from a syscall... but that shouldn't |
230 | * be a problem */ |
326 | * be a problem */ |
231 | rc = copy_from_uspace(buffer, uspace_ptr, size); |
327 | rc = copy_from_uspace(buffer, uspace_ptr, size); |
232 | if (rc) { |
328 | if (rc) { |
233 | IPC_SET_RETVAL(call->data, rc); |
329 | IPC_SET_RETVAL(call->data, rc); |
234 | return; |
330 | return; |
235 | } |
331 | } |
236 | 332 | ||
237 | klog_printf("first word: %u", *((unative_t *)buffer)); |
333 | klog_printf("first word: %u", *((unative_t *)buffer)); |
238 | 334 | ||
239 | IPC_SET_RETVAL(call->data, 0); |
335 | IPC_SET_RETVAL(call->data, 0); |
240 | /* Hack: ARG1=dest, ARG2=size as in IPC_M_DATA_READ so that |
336 | /* Hack: ARG1=dest, ARG2=size as in IPC_M_DATA_READ so that |
241 | same code in process_answer() can be used |
337 | same code in process_answer() can be used |
242 | (no way to distinguish method in answer) */ |
338 | (no way to distinguish method in answer) */ |
243 | IPC_SET_ARG1(call->data, uspace_dst); |
339 | IPC_SET_ARG1(call->data, uspace_dst); |
244 | IPC_SET_ARG2(call->data, size); |
340 | IPC_SET_ARG2(call->data, size); |
245 | call->buffer = buffer; |
341 | call->buffer = buffer; |
246 | 342 | ||
247 | ipc_answer(&TASK->kernel_box, call); |
343 | ipc_answer(&TASK->kernel_box, call); |
248 | } |
344 | } |
249 | 345 | ||
250 | /** |
346 | /** |
251 | * Handle a debug call received on the kernel answerbox. |
347 | * Handle a debug call received on the kernel answerbox. |
252 | * |
348 | * |
253 | * This is called by the kbox servicing thread. |
349 | * This is called by the kbox servicing thread. |
254 | */ |
350 | */ |
255 | void udebug_call_receive(call_t *call) |
351 | void udebug_call_receive(call_t *call) |
256 | { |
352 | { |
257 | int debug_method; |
353 | int debug_method; |
258 | 354 | ||
259 | debug_method = IPC_GET_ARG1(call->data); |
355 | debug_method = IPC_GET_ARG1(call->data); |
260 | 356 | ||
261 | switch (debug_method) { |
357 | switch (debug_method) { |
262 | case UDEBUG_M_MEM_READ: |
358 | case UDEBUG_M_MEM_READ: |
263 | udebug_receive_mem_read(call); |
359 | udebug_receive_mem_read(call); |
264 | break; |
360 | break; |
265 | } |
361 | } |
266 | } |
362 | } |
267 | 363 | ||
268 | /** @} |
364 | /** @} |
269 | */ |
365 | */ |
270 | 366 |