Rev 2922 | Rev 2924 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
2911 | svoboda | 1 | /* |
2 | * Copyright (c) 2008 Jiri Svoboda |
||
3 | * All rights reserved. |
||
4 | * |
||
5 | * Redistribution and use in source and binary forms, with or without |
||
6 | * modification, are permitted provided that the following conditions |
||
7 | * are met: |
||
8 | * |
||
9 | * - Redistributions of source code must retain the above copyright |
||
10 | * notice, this list of conditions and the following disclaimer. |
||
11 | * - Redistributions in binary form must reproduce the above copyright |
||
12 | * notice, this list of conditions and the following disclaimer in the |
||
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 |
||
15 | * derived from this software without specific prior written permission. |
||
16 | * |
||
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 |
||
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
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 |
||
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 |
||
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
27 | */ |
||
28 | |||
29 | /** @addtogroup debug |
||
30 | * @{ |
||
31 | */ |
||
32 | /** @file |
||
33 | */ |
||
34 | |||
35 | #include <stdio.h> |
||
36 | #include <stdlib.h> |
||
37 | #include <unistd.h> |
||
38 | #include <syscall.h> |
||
39 | #include <ipc/ipc.h> |
||
40 | #include <fibril.h> |
||
41 | #include <errno.h> |
||
42 | #include <udebug.h> |
||
43 | #include <async.h> |
||
44 | #include <string.h> |
||
45 | |||
46 | #include "cmd.h" |
||
2923 | svoboda | 47 | #include "include/arch.h" |
2915 | svoboda | 48 | #include "main.h" |
2911 | svoboda | 49 | |
50 | void thread_debug_start(unsigned thread_hash); |
||
51 | |||
52 | #define INBUF_SIZE 64 |
||
53 | char in_buf[INBUF_SIZE]; |
||
54 | |||
55 | #define MAX_ARGC 10 |
||
56 | int cmd_argc; |
||
57 | char *cmd_argv[MAX_ARGC + 1]; /* need one spare field for cmd_split() */ |
||
58 | |||
59 | #define THBUF_SIZE 64 |
||
60 | thash_t thread_hash_buf[THBUF_SIZE]; |
||
61 | unsigned n_threads; |
||
62 | |||
63 | int next_thread_id; |
||
64 | |||
65 | int app_phone; |
||
66 | volatile bool abort_debug; |
||
67 | |||
68 | thash_t thash; |
||
69 | volatile int paused; |
||
70 | |||
2922 | svoboda | 71 | breakpoint_t brk_list[MAX_BRKPTS]; |
72 | int lifted_brkpt; |
||
73 | |||
2911 | svoboda | 74 | void read_line(char *buffer, int n) |
75 | { |
||
76 | char c; |
||
77 | int i; |
||
78 | |||
79 | i = 0; |
||
80 | while (i < n - 1) { |
||
81 | c = getchar(); |
||
82 | if (c == '\n') break; |
||
83 | if (c == '\b') { |
||
84 | if (i > 0) { |
||
85 | putchar('\b'); |
||
86 | --i; |
||
87 | } |
||
88 | continue; |
||
89 | } |
||
90 | |||
91 | putchar(c); |
||
92 | buffer[i++] = c; |
||
93 | } |
||
94 | |||
95 | putchar('\n'); |
||
96 | buffer[i] = '\0'; |
||
97 | } |
||
98 | |||
99 | void command_split(char *cmd_str) |
||
100 | { |
||
101 | char *p = cmd_str; |
||
102 | |||
103 | if (*p == '\0') { |
||
104 | cmd_argc = 0; |
||
105 | return; |
||
106 | } |
||
107 | |||
108 | cmd_argc = 1; |
||
109 | cmd_argv[0] = p; |
||
110 | |||
111 | while (*p != '\0') { |
||
112 | if (*p == ' ') { |
||
113 | cmd_argv[cmd_argc++] = p + 1; |
||
114 | *p = '\0'; |
||
115 | } |
||
116 | ++p; |
||
117 | } |
||
118 | } |
||
119 | |||
120 | void command_run(void) |
||
121 | { |
||
122 | int i; |
||
123 | int cmp_len; |
||
124 | int len; |
||
125 | |||
126 | int idx_found; |
||
127 | int num_found; |
||
128 | |||
129 | len = strlen(cmd_argv[0]); |
||
130 | cmp_len = 1; |
||
131 | |||
132 | while (cmp_len <= len + 1) { |
||
133 | |||
134 | num_found = 0; |
||
135 | i = 0; |
||
136 | while (cmd_table[i].name != NULL) { |
||
137 | if (strncmp(cmd_table[i].name, cmd_argv[0], cmp_len) == 0) { |
||
138 | idx_found = i; |
||
139 | ++num_found; |
||
140 | } |
||
141 | ++i; |
||
142 | } |
||
143 | |||
144 | if (num_found < 2) break; |
||
145 | |||
146 | --cmp_len; |
||
147 | } |
||
148 | |||
149 | if (num_found == 0) { |
||
150 | printf("Unknown command. Try one of:\n"); |
||
151 | cmd_help(0, NULL); |
||
152 | return; |
||
153 | } |
||
154 | |||
155 | if (cmd_argc - 1 != cmd_table[idx_found].argc) { |
||
156 | printf("Command '%s' expects %d arguments\n", |
||
157 | cmd_table[idx_found].name, cmd_table[idx_found].argc); |
||
158 | return; |
||
159 | } |
||
160 | |||
161 | (*cmd_table[idx_found].proc)(cmd_argc, cmd_argv); |
||
162 | } |
||
163 | |||
164 | |||
165 | int task_connect(int taskid) |
||
166 | { |
||
167 | int rc; |
||
2918 | svoboda | 168 | unsigned evmask; |
2911 | svoboda | 169 | |
170 | printf("ipc_connect_kbox(%d)... ", taskid); |
||
171 | rc = ipc_connect_kbox(taskid); |
||
172 | printf("-> %d\n", rc); |
||
173 | app_phone = rc; |
||
174 | if (rc < 0) return rc; |
||
175 | |||
176 | printf("udebug_begin()... "); |
||
177 | rc = udebug_begin(app_phone); |
||
178 | printf("-> %d\n", rc); |
||
179 | if (rc < 0) return rc; |
||
180 | |||
2918 | svoboda | 181 | evmask = UDEBUG_EM_ALL & ~(UDEBUG_EM_SYSCALL_B | UDEBUG_EM_SYSCALL_E); |
182 | printf("udebug_set_evmask(0x%x)... ", evmask); |
||
183 | rc = udebug_set_evmask(app_phone, evmask); |
||
2911 | svoboda | 184 | printf("-> %d\n", rc); |
185 | if (rc < 0) return rc; |
||
186 | |||
187 | return 0; |
||
188 | } |
||
189 | |||
190 | int get_thread_list(void) |
||
191 | { |
||
192 | int rc; |
||
193 | int tb_copied; |
||
194 | int tb_needed; |
||
195 | int i; |
||
196 | |||
197 | printf("send IPC_M_DEBUG_THREAD_READ message\n"); |
||
198 | rc = udebug_thread_read(app_phone, (unsigned)thread_hash_buf, |
||
199 | THBUF_SIZE*sizeof(unsigned), &tb_copied, &tb_needed); |
||
200 | printf("-> %d\n", rc); |
||
201 | if (rc < 0) return rc; |
||
202 | |||
203 | n_threads = tb_copied / sizeof(unsigned); |
||
204 | |||
205 | printf("thread IDs:"); |
||
206 | for (i=0; i<n_threads; i++) { |
||
207 | printf(" %u", thread_hash_buf[i]); |
||
208 | } |
||
209 | printf("\ntotal of %u threads\n", tb_needed/sizeof(unsigned)); |
||
210 | |||
211 | return 0; |
||
212 | } |
||
213 | |||
214 | void event_thread_b(unsigned hash) |
||
215 | { |
||
216 | async_serialize_start(); |
||
217 | printf("new thread, hash 0x%x\n", hash); |
||
218 | async_serialize_end(); |
||
219 | |||
220 | thread_debug_start(hash); |
||
221 | } |
||
222 | |||
2922 | svoboda | 223 | static unsigned buffer[1024]; |
224 | |||
2923 | svoboda | 225 | static void debug_event(thash_t thash, udebug_event_t ev_type, sysarg_t val0) |
226 | { |
||
227 | switch (ev_type) { |
||
228 | case UDEBUG_EVENT_STOP: |
||
229 | printf("stop event\n"); |
||
230 | printf("waiting for resume\n"); |
||
231 | while (paused) { |
||
232 | usleep(1000000); |
||
233 | fibril_yield(); |
||
234 | printf("."); |
||
235 | } |
||
236 | printf("resumed\n"); |
||
237 | break; |
||
238 | case UDEBUG_EVENT_THREAD_B: |
||
239 | event_thread_b(val0); |
||
240 | break; |
||
241 | case UDEBUG_EVENT_THREAD_E: |
||
242 | printf("thread 0x%x exited\n", val0); |
||
243 | abort_debug = true; |
||
244 | break; |
||
245 | case UDEBUG_EVENT_BREAKPOINT: |
||
246 | printf("breakpoint reached\n"); |
||
247 | arch_event_breakpoint(thash); |
||
248 | break; |
||
249 | case UDEBUG_EVENT_TRAP: |
||
250 | printf("trap event\n"); |
||
251 | arch_event_trap(thash); |
||
252 | break; |
||
253 | default: |
||
254 | printf("unknown event type %d\n", ev_type); |
||
255 | break; |
||
256 | } |
||
257 | } |
||
258 | |||
2911 | svoboda | 259 | void debug_loop(void *thread_hash_arg) |
260 | { |
||
261 | int rc; |
||
2923 | svoboda | 262 | udebug_event_t ev_type; |
2911 | svoboda | 263 | unsigned thread_hash; |
264 | unsigned thread_id; |
||
265 | unsigned val0, val1; |
||
266 | |||
267 | thread_hash = (unsigned)thread_hash_arg; |
||
268 | thread_id = next_thread_id++; |
||
269 | |||
270 | printf("debug_loop(%d)\n", thread_id); |
||
271 | |||
272 | while (!abort_debug) { |
||
273 | |||
2918 | svoboda | 274 | printf("go\n"); |
2911 | svoboda | 275 | /* Run thread until an event occurs */ |
276 | rc = udebug_go(app_phone, thread_hash, |
||
277 | &ev_type, &val0, &val1); |
||
278 | |||
279 | if (ev_type == UDEBUG_EVENT_FINISHED) { |
||
280 | printf("thread %u debugging finished\n", thread_id); |
||
281 | break; |
||
282 | } |
||
283 | |||
2923 | svoboda | 284 | if (rc >= 0) debug_event(thread_hash, ev_type, val0); |
2911 | svoboda | 285 | } |
286 | |||
287 | printf("debug_loop(%d) exiting\n", thread_id); |
||
288 | } |
||
289 | |||
290 | void thread_debug_start(unsigned thread_hash) |
||
291 | { |
||
292 | fid_t fid; |
||
293 | |||
294 | thash = thread_hash; |
||
295 | |||
296 | fid = fibril_create(debug_loop, (void *)thread_hash); |
||
297 | if (fid == 0) { |
||
298 | printf("Warning: Failed creating fibril\n"); |
||
299 | } |
||
300 | fibril_add_ready(fid); |
||
301 | } |
||
302 | |||
303 | void debug_active_task(void) |
||
304 | { |
||
305 | int taskid; |
||
306 | int i; |
||
307 | int rc; |
||
308 | int c; |
||
309 | |||
310 | printf("Breakpoint Debugger\n"); |
||
311 | printf("Press 'c' to connect\n"); |
||
312 | while ((i = getchar()) != 'c') |
||
313 | putchar(i); |
||
314 | |||
315 | taskid = 14; |
||
316 | rc = task_connect(taskid); |
||
317 | if (rc < 0) { |
||
318 | printf("Failed to connect to task %d\n", taskid); |
||
319 | return; |
||
320 | } |
||
321 | |||
322 | printf("Connected to task %d\n", taskid); |
||
323 | |||
324 | rc = get_thread_list(); |
||
325 | if (rc < 0) { |
||
326 | printf("Failed to get thread list (error %d)\n", rc); |
||
327 | return; |
||
328 | } |
||
329 | |||
330 | abort_debug = false; |
||
331 | |||
332 | for (i = 0; i < n_threads; i++) { |
||
333 | thread_debug_start(thread_hash_buf[i]); |
||
334 | } |
||
335 | |||
336 | while (!quit) { |
||
337 | printf("> "); |
||
338 | read_line(in_buf, INBUF_SIZE); |
||
339 | command_split(in_buf); |
||
340 | if (cmd_argc == 0) continue; |
||
341 | |||
342 | command_run(); |
||
343 | } |
||
344 | |||
345 | printf("terminate debugging session...\n"); |
||
346 | abort_debug = true; |
||
347 | udebug_end(app_phone); |
||
348 | ipc_hangup(app_phone); |
||
349 | |||
350 | printf("done\n"); |
||
351 | return; |
||
352 | } |
||
353 | |||
354 | static void main_init(void) |
||
355 | { |
||
356 | next_thread_id = 1; |
||
357 | paused = 0; |
||
358 | } |
||
359 | |||
360 | int main(void) |
||
361 | { |
||
362 | main_init(); |
||
363 | |||
364 | while (1) { |
||
365 | debug_active_task(); |
||
366 | } |
||
367 | } |
||
368 | |||
369 | /** @} |
||
370 | */ |