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1 | /* |
1 | /* |
2 | * Copyright (c) 2008 Jiri Svoboda |
2 | * Copyright (c) 2008 Jiri Svoboda |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup generic |
29 | /** @addtogroup generic |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | 32 | ||
33 | /** |
33 | /** |
34 | * @file |
34 | * @file |
35 | * @brief Udebug IPC message handling. |
35 | * @brief Udebug IPC message handling. |
36 | * |
36 | * |
37 | * This module handles udebug IPC messages and calls the appropriate |
37 | * This module handles udebug IPC messages and calls the appropriate |
38 | * functions from the udebug_ops module which implement them. |
38 | * functions from the udebug_ops module which implement them. |
39 | */ |
39 | */ |
40 | 40 | ||
41 | #include <proc/task.h> |
41 | #include <proc/task.h> |
42 | #include <proc/thread.h> |
42 | #include <proc/thread.h> |
43 | #include <arch.h> |
43 | #include <arch.h> |
44 | #include <errno.h> |
44 | #include <errno.h> |
45 | #include <ipc/ipc.h> |
45 | #include <ipc/ipc.h> |
46 | #include <syscall/copy.h> |
46 | #include <syscall/copy.h> |
47 | #include <udebug/udebug.h> |
47 | #include <udebug/udebug.h> |
48 | #include <udebug/udebug_ops.h> |
48 | #include <udebug/udebug_ops.h> |
49 | #include <udebug/udebug_ipc.h> |
49 | #include <udebug/udebug_ipc.h> |
50 | 50 | ||
51 | int udebug_request_preprocess(call_t *call, phone_t *phone) |
51 | int udebug_request_preprocess(call_t *call, phone_t *phone) |
52 | { |
52 | { |
53 | switch (IPC_GET_ARG1(call->data)) { |
53 | switch (IPC_GET_ARG1(call->data)) { |
54 | /* future UDEBUG_M_REGS_WRITE, UDEBUG_M_MEM_WRITE: */ |
54 | /* future UDEBUG_M_REGS_WRITE, UDEBUG_M_MEM_WRITE: */ |
55 | default: |
55 | default: |
56 | break; |
56 | break; |
57 | } |
57 | } |
58 | 58 | ||
59 | return 0; |
59 | return 0; |
60 | } |
60 | } |
61 | 61 | ||
62 | /** Process a BEGIN call. |
62 | /** Process a BEGIN call. |
63 | * |
63 | * |
64 | * Initiates a debugging session for the current task. The reply |
64 | * Initiates a debugging session for the current task. The reply |
65 | * to this call may or may not be sent before this function returns. |
65 | * to this call may or may not be sent before this function returns. |
66 | * |
66 | * |
67 | * @param call The call structure. |
67 | * @param call The call structure. |
68 | */ |
68 | */ |
69 | static void udebug_receive_begin(call_t *call) |
69 | static void udebug_receive_begin(call_t *call) |
70 | { |
70 | { |
71 | int rc; |
71 | int rc; |
72 | 72 | ||
73 | rc = udebug_begin(call); |
73 | rc = udebug_begin(call); |
74 | if (rc < 0) { |
74 | if (rc < 0) { |
75 | IPC_SET_RETVAL(call->data, rc); |
75 | IPC_SET_RETVAL(call->data, rc); |
76 | ipc_answer(&TASK->kb.box, call); |
76 | ipc_answer(&TASK->kb.box, call); |
77 | return; |
77 | return; |
78 | } |
78 | } |
79 | 79 | ||
80 | /* |
80 | /* |
81 | * If the initialization of the debugging session has finished, |
81 | * If the initialization of the debugging session has finished, |
82 | * send a reply. |
82 | * send a reply. |
83 | */ |
83 | */ |
84 | if (rc != 0) { |
84 | if (rc != 0) { |
85 | IPC_SET_RETVAL(call->data, 0); |
85 | IPC_SET_RETVAL(call->data, 0); |
86 | ipc_answer(&TASK->kb.box, call); |
86 | ipc_answer(&TASK->kb.box, call); |
87 | } |
87 | } |
88 | } |
88 | } |
89 | 89 | ||
90 | /** Process an END call. |
90 | /** Process an END call. |
91 | * |
91 | * |
92 | * Terminates the debugging session for the current task. |
92 | * Terminates the debugging session for the current task. |
93 | * @param call The call structure. |
93 | * @param call The call structure. |
94 | */ |
94 | */ |
95 | static void udebug_receive_end(call_t *call) |
95 | static void udebug_receive_end(call_t *call) |
96 | { |
96 | { |
97 | int rc; |
97 | int rc; |
98 | 98 | ||
99 | rc = udebug_end(); |
99 | rc = udebug_end(); |
100 | 100 | ||
101 | IPC_SET_RETVAL(call->data, rc); |
101 | IPC_SET_RETVAL(call->data, rc); |
102 | ipc_answer(&TASK->kb.box, call); |
102 | ipc_answer(&TASK->kb.box, call); |
103 | } |
103 | } |
104 | 104 | ||
105 | /** Process a SET_EVMASK call. |
105 | /** Process a SET_EVMASK call. |
106 | * |
106 | * |
107 | * Sets an event mask for the current debugging session. |
107 | * Sets an event mask for the current debugging session. |
108 | * @param call The call structure. |
108 | * @param call The call structure. |
109 | */ |
109 | */ |
110 | static void udebug_receive_set_evmask(call_t *call) |
110 | static void udebug_receive_set_evmask(call_t *call) |
111 | { |
111 | { |
112 | int rc; |
112 | int rc; |
113 | udebug_evmask_t mask; |
113 | udebug_evmask_t mask; |
114 | 114 | ||
115 | mask = IPC_GET_ARG2(call->data); |
115 | mask = IPC_GET_ARG2(call->data); |
116 | rc = udebug_set_evmask(mask); |
116 | rc = udebug_set_evmask(mask); |
117 | 117 | ||
118 | IPC_SET_RETVAL(call->data, rc); |
118 | IPC_SET_RETVAL(call->data, rc); |
119 | ipc_answer(&TASK->kb.box, call); |
119 | ipc_answer(&TASK->kb.box, call); |
120 | } |
120 | } |
121 | 121 | ||
122 | 122 | ||
123 | /** Process a GO call. |
123 | /** Process a GO call. |
124 | * |
124 | * |
125 | * Resumes execution of the specified thread. |
125 | * Resumes execution of the specified thread. |
126 | * @param call The call structure. |
126 | * @param call The call structure. |
127 | */ |
127 | */ |
128 | static void udebug_receive_go(call_t *call) |
128 | static void udebug_receive_go(call_t *call) |
129 | { |
129 | { |
130 | thread_t *t; |
130 | thread_t *t; |
131 | int rc; |
131 | int rc; |
132 | 132 | ||
133 | t = (thread_t *)IPC_GET_ARG2(call->data); |
133 | t = (thread_t *)IPC_GET_ARG2(call->data); |
134 | 134 | ||
135 | rc = udebug_go(t, call); |
135 | rc = udebug_go(t, call); |
136 | if (rc < 0) { |
136 | if (rc < 0) { |
137 | IPC_SET_RETVAL(call->data, rc); |
137 | IPC_SET_RETVAL(call->data, rc); |
138 | ipc_answer(&TASK->kb.box, call); |
138 | ipc_answer(&TASK->kb.box, call); |
139 | return; |
139 | return; |
140 | } |
140 | } |
141 | } |
141 | } |
142 | 142 | ||
143 | /** Process a STOP call. |
143 | /** Process a STOP call. |
144 | * |
144 | * |
145 | * Suspends execution of the specified thread. |
145 | * Suspends execution of the specified thread. |
146 | * @param call The call structure. |
146 | * @param call The call structure. |
147 | */ |
147 | */ |
148 | static void udebug_receive_stop(call_t *call) |
148 | static void udebug_receive_stop(call_t *call) |
149 | { |
149 | { |
150 | thread_t *t; |
150 | thread_t *t; |
151 | int rc; |
151 | int rc; |
152 | 152 | ||
153 | t = (thread_t *)IPC_GET_ARG2(call->data); |
153 | t = (thread_t *)IPC_GET_ARG2(call->data); |
154 | 154 | ||
155 | rc = udebug_stop(t, call); |
155 | rc = udebug_stop(t, call); |
156 | IPC_SET_RETVAL(call->data, rc); |
156 | IPC_SET_RETVAL(call->data, rc); |
157 | ipc_answer(&TASK->kb.box, call); |
157 | ipc_answer(&TASK->kb.box, call); |
158 | } |
158 | } |
159 | 159 | ||
160 | /** Process a THREAD_READ call. |
160 | /** Process a THREAD_READ call. |
161 | * |
161 | * |
162 | * Reads the list of hashes of the (userspace) threads in the current task. |
162 | * Reads the list of hashes of the (userspace) threads in the current task. |
163 | * @param call The call structure. |
163 | * @param call The call structure. |
164 | */ |
164 | */ |
165 | static void udebug_receive_thread_read(call_t *call) |
165 | static void udebug_receive_thread_read(call_t *call) |
166 | { |
166 | { |
167 | unative_t uspace_addr; |
167 | unative_t uspace_addr; |
168 | unative_t to_copy; |
168 | unative_t to_copy; |
169 | unsigned total_bytes; |
169 | unsigned total_bytes; |
170 | unsigned buf_size; |
170 | unsigned buf_size; |
171 | void *buffer; |
171 | void *buffer; |
172 | size_t n; |
172 | size_t n; |
173 | int rc; |
173 | int rc; |
174 | 174 | ||
175 | uspace_addr = IPC_GET_ARG2(call->data); /* Destination address */ |
175 | uspace_addr = IPC_GET_ARG2(call->data); /* Destination address */ |
176 | buf_size = IPC_GET_ARG3(call->data); /* Dest. buffer size */ |
176 | buf_size = IPC_GET_ARG3(call->data); /* Dest. buffer size */ |
177 | 177 | ||
178 | /* |
178 | /* |
179 | * Read thread list. Variable n will be filled with actual number |
179 | * Read thread list. Variable n will be filled with actual number |
180 | * of threads times thread-id size. |
180 | * of threads times thread-id size. |
181 | */ |
181 | */ |
182 | rc = udebug_thread_read(&buffer, buf_size, &n); |
182 | rc = udebug_thread_read(&buffer, buf_size, &n); |
183 | if (rc < 0) { |
183 | if (rc < 0) { |
184 | IPC_SET_RETVAL(call->data, rc); |
184 | IPC_SET_RETVAL(call->data, rc); |
185 | ipc_answer(&TASK->kb.box, call); |
185 | ipc_answer(&TASK->kb.box, call); |
186 | return; |
186 | return; |
187 | } |
187 | } |
188 | 188 | ||
189 | total_bytes = n; |
189 | total_bytes = n; |
190 | 190 | ||
191 | /* Copy MAX(buf_size, total_bytes) bytes */ |
191 | /* Copy MAX(buf_size, total_bytes) bytes */ |
192 | 192 | ||
193 | if (buf_size > total_bytes) |
193 | if (buf_size > total_bytes) |
194 | to_copy = total_bytes; |
194 | to_copy = total_bytes; |
195 | else |
195 | else |
196 | to_copy = buf_size; |
196 | to_copy = buf_size; |
197 | 197 | ||
198 | /* |
198 | /* |
199 | * Make use of call->buffer to transfer data to caller's userspace |
199 | * Make use of call->buffer to transfer data to caller's userspace |
200 | */ |
200 | */ |
201 | 201 | ||
202 | IPC_SET_RETVAL(call->data, 0); |
202 | IPC_SET_RETVAL(call->data, 0); |
203 | /* ARG1=dest, ARG2=size as in IPC_M_DATA_READ so that |
203 | /* ARG1=dest, ARG2=size as in IPC_M_DATA_READ so that |
204 | same code in process_answer() can be used |
204 | same code in process_answer() can be used |
205 | (no way to distinguish method in answer) */ |
205 | (no way to distinguish method in answer) */ |
206 | IPC_SET_ARG1(call->data, uspace_addr); |
206 | IPC_SET_ARG1(call->data, uspace_addr); |
207 | IPC_SET_ARG2(call->data, to_copy); |
207 | IPC_SET_ARG2(call->data, to_copy); |
208 | 208 | ||
209 | IPC_SET_ARG3(call->data, total_bytes); |
209 | IPC_SET_ARG3(call->data, total_bytes); |
210 | call->buffer = buffer; |
210 | call->buffer = buffer; |
211 | 211 | ||
212 | ipc_answer(&TASK->kb.box, call); |
212 | ipc_answer(&TASK->kb.box, call); |
213 | } |
213 | } |
214 | 214 | ||
215 | /** Process an ARGS_READ call. |
215 | /** Process an ARGS_READ call. |
216 | * |
216 | * |
217 | * Reads the argument of a current syscall event (SYSCALL_B or SYSCALL_E). |
217 | * Reads the argument of a current syscall event (SYSCALL_B or SYSCALL_E). |
218 | * @param call The call structure. |
218 | * @param call The call structure. |
219 | */ |
219 | */ |
220 | static void udebug_receive_args_read(call_t *call) |
220 | static void udebug_receive_args_read(call_t *call) |
221 | { |
221 | { |
222 | thread_t *t; |
222 | thread_t *t; |
223 | unative_t uspace_addr; |
223 | unative_t uspace_addr; |
224 | int rc; |
224 | int rc; |
225 | void *buffer; |
225 | void *buffer; |
226 | 226 | ||
227 | t = (thread_t *)IPC_GET_ARG2(call->data); |
227 | t = (thread_t *)IPC_GET_ARG2(call->data); |
228 | 228 | ||
229 | rc = udebug_args_read(t, &buffer); |
229 | rc = udebug_args_read(t, &buffer); |
230 | if (rc != EOK) { |
230 | if (rc != EOK) { |
231 | IPC_SET_RETVAL(call->data, rc); |
231 | IPC_SET_RETVAL(call->data, rc); |
232 | ipc_answer(&TASK->kb.box, call); |
232 | ipc_answer(&TASK->kb.box, call); |
233 | return; |
233 | return; |
234 | } |
234 | } |
235 | 235 | ||
236 | /* |
236 | /* |
237 | * Make use of call->buffer to transfer data to caller's userspace |
237 | * Make use of call->buffer to transfer data to caller's userspace |
238 | */ |
238 | */ |
239 | 239 | ||
240 | uspace_addr = IPC_GET_ARG3(call->data); |
240 | uspace_addr = IPC_GET_ARG3(call->data); |
241 | 241 | ||
242 | IPC_SET_RETVAL(call->data, 0); |
242 | IPC_SET_RETVAL(call->data, 0); |
243 | /* ARG1=dest, ARG2=size as in IPC_M_DATA_READ so that |
243 | /* ARG1=dest, ARG2=size as in IPC_M_DATA_READ so that |
244 | same code in process_answer() can be used |
244 | same code in process_answer() can be used |
245 | (no way to distinguish method in answer) */ |
245 | (no way to distinguish method in answer) */ |
246 | IPC_SET_ARG1(call->data, uspace_addr); |
246 | IPC_SET_ARG1(call->data, uspace_addr); |
247 | IPC_SET_ARG2(call->data, 6 * sizeof(unative_t)); |
247 | IPC_SET_ARG2(call->data, 6 * sizeof(unative_t)); |
248 | call->buffer = buffer; |
248 | call->buffer = buffer; |
249 | 249 | ||
250 | ipc_answer(&TASK->kb.box, call); |
250 | ipc_answer(&TASK->kb.box, call); |
251 | } |
251 | } |
252 | 252 | ||
253 | /** Process an MEM_READ call. |
253 | /** Process an MEM_READ call. |
254 | * |
254 | * |
255 | * Reads memory of the current (debugged) task. |
255 | * Reads memory of the current (debugged) task. |
256 | * @param call The call structure. |
256 | * @param call The call structure. |
257 | */ |
257 | */ |
258 | static void udebug_receive_mem_read(call_t *call) |
258 | static void udebug_receive_mem_read(call_t *call) |
259 | { |
259 | { |
260 | unative_t uspace_dst; |
260 | unative_t uspace_dst; |
261 | unative_t uspace_src; |
261 | unative_t uspace_src; |
262 | unsigned size; |
262 | unsigned size; |
263 | void *buffer; |
263 | void *buffer; |
264 | int rc; |
264 | int rc; |
265 | 265 | ||
266 | uspace_dst = IPC_GET_ARG2(call->data); |
266 | uspace_dst = IPC_GET_ARG2(call->data); |
267 | uspace_src = IPC_GET_ARG3(call->data); |
267 | uspace_src = IPC_GET_ARG3(call->data); |
268 | size = IPC_GET_ARG4(call->data); |
268 | size = IPC_GET_ARG4(call->data); |
269 | 269 | ||
270 | rc = udebug_mem_read(uspace_src, size, &buffer); |
270 | rc = udebug_mem_read(uspace_src, size, &buffer); |
271 | if (rc < 0) { |
271 | if (rc < 0) { |
272 | IPC_SET_RETVAL(call->data, rc); |
272 | IPC_SET_RETVAL(call->data, rc); |
273 | ipc_answer(&TASK->kb.box, call); |
273 | ipc_answer(&TASK->kb.box, call); |
274 | return; |
274 | return; |
275 | } |
275 | } |
276 | 276 | ||
277 | IPC_SET_RETVAL(call->data, 0); |
277 | IPC_SET_RETVAL(call->data, 0); |
278 | /* ARG1=dest, ARG2=size as in IPC_M_DATA_READ so that |
278 | /* ARG1=dest, ARG2=size as in IPC_M_DATA_READ so that |
279 | same code in process_answer() can be used |
279 | same code in process_answer() can be used |
280 | (no way to distinguish method in answer) */ |
280 | (no way to distinguish method in answer) */ |
281 | IPC_SET_ARG1(call->data, uspace_dst); |
281 | IPC_SET_ARG1(call->data, uspace_dst); |
282 | IPC_SET_ARG2(call->data, size); |
282 | IPC_SET_ARG2(call->data, size); |
283 | call->buffer = buffer; |
283 | call->buffer = buffer; |
284 | 284 | ||
285 | ipc_answer(&TASK->kb.box, call); |
285 | ipc_answer(&TASK->kb.box, call); |
286 | } |
286 | } |
287 | 287 | ||
- | 288 | ||
- | 289 | ||
- | 290 | /**************************/ |
|
- | 291 | /*** CHECKPOINTING ***/ |
|
- | 292 | /**************************/ |
|
- | 293 | ||
- | 294 | ||
- | 295 | static void udebug_receive_thread_get_thread_struct(call_t *call) |
|
- | 296 | { |
|
- | 297 | unative_t to_copy; |
|
- | 298 | unative_t total_bytes; |
|
- | 299 | thread_t *t = (thread_t *)IPC_GET_ARG3(call->data); |
|
- | 300 | void *buffer; |
|
- | 301 | ||
- | 302 | unative_t uspace_addr = IPC_GET_ARG2(call->data); |
|
- | 303 | size_t buf_size = IPC_GET_ARG4(call->data); |
|
- | 304 | ||
- | 305 | if (buf_size < sizeof(thread_t)) |
|
- | 306 | { |
|
- | 307 | to_copy = 0; |
|
- | 308 | total_bytes = sizeof(thread_t); |
|
- | 309 | } |
|
- | 310 | else |
|
- | 311 | { |
|
- | 312 | udebug_thread_get_thread_struct(t, &buffer); |
|
- | 313 | to_copy = sizeof(thread_t); |
|
- | 314 | total_bytes = sizeof(thread_t); |
|
- | 315 | } |
|
- | 316 | ||
- | 317 | IPC_SET_RETVAL(call->data, 0); |
|
- | 318 | IPC_SET_ARG1(call->data, uspace_addr); |
|
- | 319 | IPC_SET_ARG2(call->data, to_copy); |
|
- | 320 | IPC_SET_ARG3(call->data, total_bytes); |
|
- | 321 | ||
- | 322 | if (to_copy > 0) |
|
- | 323 | call->buffer = buffer; |
|
- | 324 | else |
|
- | 325 | call->buffer = NULL; |
|
- | 326 | ||
- | 327 | ipc_answer(&TASK->kb.box, call); |
|
- | 328 | } |
|
- | 329 | ||
- | 330 | static void udebug_receive_thread_copy_kstack(call_t *call) |
|
- | 331 | { |
|
- | 332 | void *buffer; |
|
- | 333 | unative_t uspace_addr = IPC_GET_ARG2(call->data); |
|
- | 334 | size_t buf_size = IPC_GET_ARG3(call->data); |
|
- | 335 | thread_t *t = (thread_t *)IPC_GET_ARG4(call->data); |
|
- | 336 | size_t copied; |
|
- | 337 | ||
- | 338 | size_t kstack_size = PAGE_SIZE;//(uintptr_t)t->saved_context.sp - (uintptr_t)t->kstack; |
|
- | 339 | ||
- | 340 | if (buf_size >= kstack_size) |
|
- | 341 | { |
|
- | 342 | udebug_copy_kstack(t->kstack, &buffer, buf_size); |
|
- | 343 | copied = kstack_size; |
|
- | 344 | } |
|
- | 345 | else |
|
- | 346 | copied = 0; |
|
- | 347 | ||
- | 348 | IPC_SET_RETVAL(call->data, 0); |
|
- | 349 | IPC_SET_ARG1(call->data, uspace_addr); |
|
- | 350 | IPC_SET_ARG2(call->data, copied); |
|
- | 351 | IPC_SET_ARG3(call->data, kstack_size); // needed |
|
- | 352 | ||
- | 353 | if (copied > 0) |
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- | 354 | call->buffer = (void *)buffer; |
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- | 355 | else |
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- | 356 | call->buffer = NULL; |
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- | 357 | ||
- | 358 | ipc_answer(&TASK->kb.box, call); |
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- | 359 | } |
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- | 360 | ||
- | 361 | static void udebug_receive_task_mem_areas_read(call_t *call) |
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- | 362 | { |
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- | 363 | unative_t uspace_addr; |
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- | 364 | unative_t to_copy; |
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- | 365 | unsigned total_bytes; |
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- | 366 | unsigned buf_size; |
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- | 367 | void *buffer; |
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- | 368 | size_t n; |
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- | 369 | int rc; |
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- | 370 | ||
- | 371 | uspace_addr = IPC_GET_ARG2(call->data); /* Destination address */ |
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- | 372 | buf_size = IPC_GET_ARG3(call->data); /* Dest. buffer size */ |
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- | 373 | ||
- | 374 | rc = udebug_task_get_memory_areas(&buffer, buf_size, &n); |
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- | 375 | if (rc < 0) { |
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- | 376 | IPC_SET_RETVAL(call->data, rc); |
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- | 377 | ipc_answer(&TASK->kb.box, call); |
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- | 378 | return; |
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- | 379 | } |
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- | 380 | ||
- | 381 | total_bytes = n; |
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- | 382 | ||
- | 383 | /* Copy MAX(buf_size, total_bytes) bytes */ |
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- | 384 | ||
- | 385 | if (buf_size > total_bytes) |
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- | 386 | to_copy = total_bytes; |
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- | 387 | else |
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- | 388 | to_copy = buf_size; |
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- | 389 | ||
- | 390 | /* |
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- | 391 | * Make use of call->buffer to transfer data to caller's userspace |
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- | 392 | */ |
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- | 393 | ||
- | 394 | IPC_SET_RETVAL(call->data, 0); |
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- | 395 | /* ARG1=dest, ARG2=size as in IPC_M_DATA_READ so that |
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- | 396 | same code in process_answer() can be used |
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- | 397 | (no way to distinguish method in answer) */ |
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- | 398 | IPC_SET_ARG1(call->data, uspace_addr); |
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- | 399 | IPC_SET_ARG2(call->data, to_copy); |
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- | 400 | ||
- | 401 | IPC_SET_ARG3(call->data, total_bytes); |
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- | 402 | call->buffer = buffer; |
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- | 403 | ||
- | 404 | ipc_answer(&TASK->kb.box, call); |
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- | 405 | } |
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- | 406 | ||
- | 407 | static void udebug_receive_mem_write(call_t *call) |
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- | 408 | { |
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- | 409 | size_t size = (size_t)IPC_GET_ARG3(call->data); |
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- | 410 | void *start = (void *)IPC_GET_ARG4(call->data); |
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- | 411 | ||
- | 412 | udebug_mem_write(call->buffer, start, size); |
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- | 413 | ||
- | 414 | IPC_SET_RETVAL(call->data, 0); |
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- | 415 | ipc_answer(&TASK->kb.box, call); |
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- | 416 | } |
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- | 417 | ||
- | 418 | static void udebug_receive_thread_restore_struct(call_t *call) |
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- | 419 | { |
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- | 420 | thread_t *t = (thread_t *)IPC_GET_ARG3(call->data); |
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- | 421 | ||
- | 422 | udebug_restore_thread_struct(call->buffer, t); |
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- | 423 | ||
- | 424 | IPC_SET_RETVAL(call->data, 0); |
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- | 425 | ||
- | 426 | ipc_answer(&TASK->kb.box, call); |
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- | 427 | } |
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- | 428 | ||
- | 429 | static void udebug_receive_restore_kstack(call_t *call) |
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- | 430 | { |
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- | 431 | size_t size = (size_t)IPC_GET_ARG3(call->data); |
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- | 432 | thread_t *t = (thread_t *)IPC_GET_ARG4(call->data); |
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- | 433 | ||
- | 434 | udebug_restore_kstack(call->buffer, size, t); |
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- | 435 | ||
- | 436 | IPC_SET_RETVAL(call->data, 0); |
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- | 437 | ipc_answer(&TASK->kb.box, call); |
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- | 438 | ||
- | 439 | } |
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- | 440 | ||
288 | /** Handle a debug call received on the kernel answerbox. |
441 | /** Handle a debug call received on the kernel answerbox. |
289 | * |
442 | * |
290 | * This is called by the kbox servicing thread. Verifies that the sender |
443 | * This is called by the kbox servicing thread. Verifies that the sender |
291 | * is indeed the debugger and calls the appropriate processing function. |
444 | * is indeed the debugger and calls the appropriate processing function. |
292 | */ |
445 | */ |
293 | void udebug_call_receive(call_t *call) |
446 | void udebug_call_receive(call_t *call) |
294 | { |
447 | { |
295 | int debug_method; |
448 | int debug_method; |
296 | 449 | ||
297 | debug_method = IPC_GET_ARG1(call->data); |
450 | debug_method = IPC_GET_ARG1(call->data); |
298 | 451 | ||
299 | if (debug_method != UDEBUG_M_BEGIN) { |
452 | if (debug_method != UDEBUG_M_BEGIN) { |
300 | /* |
453 | /* |
301 | * Verify that the sender is this task's debugger. |
454 | * Verify that the sender is this task's debugger. |
302 | * Note that this is the only thread that could change |
455 | * Note that this is the only thread that could change |
303 | * TASK->debugger. Therefore no locking is necessary |
456 | * TASK->debugger. Therefore no locking is necessary |
304 | * and the sender can be safely considered valid until |
457 | * and the sender can be safely considered valid until |
305 | * control exits this function. |
458 | * control exits this function. |
306 | */ |
459 | */ |
307 | if (TASK->udebug.debugger != call->sender) { |
460 | if (TASK->udebug.debugger != call->sender) { |
308 | IPC_SET_RETVAL(call->data, EINVAL); |
461 | IPC_SET_RETVAL(call->data, EINVAL); |
309 | ipc_answer(&TASK->kb.box, call); |
462 | ipc_answer(&TASK->kb.box, call); |
310 | return; |
463 | return; |
311 | } |
464 | } |
312 | } |
465 | } |
313 | 466 | ||
314 | switch (debug_method) { |
467 | switch (debug_method) { |
315 | case UDEBUG_M_BEGIN: |
468 | case UDEBUG_M_BEGIN: |
316 | udebug_receive_begin(call); |
469 | udebug_receive_begin(call); |
317 | break; |
470 | break; |
318 | case UDEBUG_M_END: |
471 | case UDEBUG_M_END: |
319 | udebug_receive_end(call); |
472 | udebug_receive_end(call); |
320 | break; |
473 | break; |
321 | case UDEBUG_M_SET_EVMASK: |
474 | case UDEBUG_M_SET_EVMASK: |
322 | udebug_receive_set_evmask(call); |
475 | udebug_receive_set_evmask(call); |
323 | break; |
476 | break; |
324 | case UDEBUG_M_GO: |
477 | case UDEBUG_M_GO: |
325 | udebug_receive_go(call); |
478 | udebug_receive_go(call); |
326 | break; |
479 | break; |
327 | case UDEBUG_M_STOP: |
480 | case UDEBUG_M_STOP: |
328 | udebug_receive_stop(call); |
481 | udebug_receive_stop(call); |
329 | break; |
482 | break; |
330 | case UDEBUG_M_THREAD_READ: |
483 | case UDEBUG_M_THREAD_READ: |
331 | udebug_receive_thread_read(call); |
484 | udebug_receive_thread_read(call); |
332 | break; |
485 | break; |
333 | case UDEBUG_M_ARGS_READ: |
486 | case UDEBUG_M_ARGS_READ: |
334 | udebug_receive_args_read(call); |
487 | udebug_receive_args_read(call); |
335 | break; |
488 | break; |
336 | case UDEBUG_M_MEM_READ: |
489 | case UDEBUG_M_MEM_READ: |
337 | udebug_receive_mem_read(call); |
490 | udebug_receive_mem_read(call); |
338 | break; |
491 | break; |
- | 492 | ||
- | 493 | /* CHECKPOINTING */ |
|
- | 494 | case UDEBUG_M_TASK_MEM_AREAS_READ: |
|
- | 495 | udebug_receive_task_mem_areas_read(call); |
|
- | 496 | break; |
|
- | 497 | case UDEBUG_M_MEM_WRITE: |
|
- | 498 | udebug_receive_mem_write(call); |
|
- | 499 | break; |
|
- | 500 | case UDEBUG_M_THREAD_COPY_KSTACK: |
|
- | 501 | udebug_receive_thread_copy_kstack(call); |
|
- | 502 | break; |
|
- | 503 | case UDEBUG_M_RESTORE_KSTACK: |
|
- | 504 | udebug_receive_restore_kstack(call); |
|
- | 505 | break; |
|
- | 506 | case UDEBUG_M_THREAD_GET_THREAD_STRUCT: |
|
- | 507 | udebug_receive_thread_get_thread_struct(call); |
|
- | 508 | break; |
|
- | 509 | case UDEBUG_M_THREAD_RESTORE_THREAD_STRUCT: |
|
- | 510 | udebug_receive_thread_restore_struct(call); |
|
- | 511 | break; |
|
339 | } |
512 | } |
340 | } |
513 | } |
341 | 514 | ||
342 | /** @} |
515 | /** @} |
343 | */ |
516 | */ |
344 | 517 |