source: mainline/uspace/app/trace/trace.c@ b224a3e

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since b224a3e was 6c34f587, checked in by Jakub Jermar <jakub@…>, 13 years ago

Remove synchronous IPC primitives.
  • Property mode set to 100644
File size: 17.9 KB
Line 
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 trace
30 * @{
31 */
32/** @file
33 */
34
35#include <stdio.h>
36#include <stdlib.h>
37#include <unistd.h>
38#include <fibril.h>
39#include <errno.h>
40#include <udebug.h>
41#include <async.h>
42#include <task.h>
43#include <mem.h>
44#include <str.h>
45#include <bool.h>
46#include <loader/loader.h>
47#include <io/console.h>
48#include <io/keycode.h>
49#include <fibril_synch.h>
50#include <sys/types.h>
51#include <sys/typefmt.h>
52#include <vfs/vfs.h>
53
54#include <libc.h>
55
56/* Temporary: service and method names */
57#include "proto.h"
58#include <ipc/services.h>
59#include "../../srv/vfs/vfs.h"
60#include <ipc/console.h>
61
62#include "syscalls.h"
63#include "ipcp.h"
64#include "errors.h"
65#include "trace.h"
66
67#define THBUF_SIZE 64
68uintptr_t thread_hash_buf[THBUF_SIZE];
69int n_threads;
70
71int next_thread_id;
72
73ipc_call_t thread_ipc_req[THBUF_SIZE];
74
75async_sess_t *sess;
76bool abort_trace;
77
78uintptr_t thash;
79static bool paused;
80static fibril_condvar_t state_cv;
81static fibril_mutex_t state_lock;
82
83static bool cev_valid;
84static kbd_event_t cev;
85
86void thread_trace_start(uintptr_t thread_hash);
87
88static task_id_t task_id;
89static loader_t *task_ldr;
90static bool task_wait_for;
91
92/** Combination of events/data to print. */
93display_mask_t display_mask;
94
95static int program_run_fibril(void *arg);
96static int cev_fibril(void *arg);
97
98static void program_run(void)
99{
100 fid_t fid;
101
102 fid = fibril_create(program_run_fibril, NULL);
103 if (fid == 0) {
104 printf("Error creating fibril\n");
105 exit(1);
106 }
107
108 fibril_add_ready(fid);
109}
110
111static void cev_fibril_start(void)
112{
113 fid_t fid;
114
115 fid = fibril_create(cev_fibril, NULL);
116 if (fid == 0) {
117 printf("Error creating fibril\n");
118 exit(1);
119 }
120
121 fibril_add_ready(fid);
122}
123
124static int program_run_fibril(void *arg)
125{
126 int rc;
127
128 /*
129 * This must be done in background as it will block until
130 * we let the task reply to this call.
131 */
132 rc = loader_run(task_ldr);
133 if (rc != 0) {
134 printf("Error running program\n");
135 exit(1);
136 }
137
138 free(task_ldr);
139 task_ldr = NULL;
140
141 printf("program_run_fibril exiting\n");
142 return 0;
143}
144
145
146static int connect_task(task_id_t task_id)
147{
148 async_sess_t *ksess = async_connect_kbox(task_id);
149
150 if (!ksess) {
151 if (errno == ENOTSUP) {
152 printf("You do not have userspace debugging support "
153 "compiled in the kernel.\n");
154 printf("Compile kernel with 'Support for userspace debuggers' "
155 "(CONFIG_UDEBUG) enabled.\n");
156 return errno;
157 }
158
159 printf("Error connecting\n");
160 printf("ipc_connect_task(%" PRIu64 ") -> %d ", task_id, errno);
161 return errno;
162 }
163
164 int rc = udebug_begin(ksess);
165 if (rc < 0) {
166 printf("udebug_begin() -> %d\n", rc);
167 return rc;
168 }
169
170 rc = udebug_set_evmask(ksess, UDEBUG_EM_ALL);
171 if (rc < 0) {
172 printf("udebug_set_evmask(0x%x) -> %d\n ", UDEBUG_EM_ALL, rc);
173 return rc;
174 }
175
176 sess = ksess;
177 return 0;
178}
179
180static int get_thread_list(void)
181{
182 int rc;
183 size_t tb_copied;
184 size_t tb_needed;
185 int i;
186
187 rc = udebug_thread_read(sess, thread_hash_buf,
188 THBUF_SIZE*sizeof(unsigned), &tb_copied, &tb_needed);
189 if (rc < 0) {
190 printf("udebug_thread_read() -> %d\n", rc);
191 return rc;
192 }
193
194 n_threads = tb_copied / sizeof(uintptr_t);
195
196 printf("Threads:");
197 for (i = 0; i < n_threads; i++) {
198 printf(" [%d] (hash %p)", 1 + i, (void *) thread_hash_buf[i]);
199 }
200 printf("\ntotal of %zu threads\n", tb_needed / sizeof(uintptr_t));
201
202 return 0;
203}
204
205void val_print(sysarg_t val, val_type_t v_type)
206{
207 long sval;
208
209 sval = (long) val;
210
211 switch (v_type) {
212 case V_VOID:
213 printf("<void>");
214 break;
215
216 case V_INTEGER:
217 printf("%ld", sval);
218 break;
219
220 case V_HASH:
221 case V_PTR:
222 printf("%p", (void *) val);
223 break;
224
225 case V_ERRNO:
226 if (sval >= -15 && sval <= 0) {
227 printf("%ld %s (%s)", sval,
228 err_desc[-sval].name,
229 err_desc[-sval].desc);
230 } else {
231 printf("%ld", sval);
232 }
233 break;
234 case V_INT_ERRNO:
235 if (sval >= -15 && sval < 0) {
236 printf("%ld %s (%s)", sval,
237 err_desc[-sval].name,
238 err_desc[-sval].desc);
239 } else {
240 printf("%ld", sval);
241 }
242 break;
243
244 case V_CHAR:
245 if (sval >= 0x20 && sval < 0x7f) {
246 printf("'%c'", (char) sval);
247 } else {
248 switch (sval) {
249 case '\a': printf("'\\a'"); break;
250 case '\b': printf("'\\b'"); break;
251 case '\n': printf("'\\n'"); break;
252 case '\r': printf("'\\r'"); break;
253 case '\t': printf("'\\t'"); break;
254 case '\\': printf("'\\\\'"); break;
255 default: printf("'\\x%02" PRIxn "'", val); break;
256 }
257 }
258 break;
259 }
260}
261
262
263static void print_sc_retval(sysarg_t retval, val_type_t val_type)
264{
265 printf(" -> ");
266 val_print(retval, val_type);
267 putchar('\n');
268}
269
270static void print_sc_args(sysarg_t *sc_args, int n)
271{
272 int i;
273
274 putchar('(');
275 if (n > 0) printf("%" PRIun, sc_args[0]);
276 for (i = 1; i < n; i++) {
277 printf(", %" PRIun, sc_args[i]);
278 }
279 putchar(')');
280}
281
282static void sc_ipc_call_async_fast(sysarg_t *sc_args, sysarg_t sc_rc)
283{
284 ipc_call_t call;
285 sysarg_t phoneid;
286
287 if (sc_rc == (sysarg_t) IPC_CALLRET_FATAL ||
288 sc_rc == (sysarg_t) IPC_CALLRET_TEMPORARY)
289 return;
290
291 phoneid = sc_args[0];
292
293 IPC_SET_IMETHOD(call, sc_args[1]);
294 IPC_SET_ARG1(call, sc_args[2]);
295 IPC_SET_ARG2(call, sc_args[3]);
296 IPC_SET_ARG3(call, sc_args[4]);
297 IPC_SET_ARG4(call, sc_args[5]);
298 IPC_SET_ARG5(call, 0);
299
300 ipcp_call_out(phoneid, &call, sc_rc);
301}
302
303static void sc_ipc_call_async_slow(sysarg_t *sc_args, sysarg_t sc_rc)
304{
305 ipc_call_t call;
306 int rc;
307
308 if (sc_rc == (sysarg_t) IPC_CALLRET_FATAL ||
309 sc_rc == (sysarg_t) IPC_CALLRET_TEMPORARY)
310 return;
311
312 memset(&call, 0, sizeof(call));
313 rc = udebug_mem_read(sess, &call.args, sc_args[1], sizeof(call.args));
314
315 if (rc >= 0) {
316 ipcp_call_out(sc_args[0], &call, sc_rc);
317 }
318}
319
320static void sc_ipc_wait(sysarg_t *sc_args, int sc_rc)
321{
322 ipc_call_t call;
323 int rc;
324
325 if (sc_rc == 0) return;
326
327 memset(&call, 0, sizeof(call));
328 rc = udebug_mem_read(sess, &call, sc_args[0], sizeof(call));
329
330 if (rc >= 0)
331 ipcp_call_in(&call, sc_rc);
332}
333
334static void event_syscall_b(unsigned thread_id, uintptr_t thread_hash,
335 unsigned sc_id, sysarg_t sc_rc)
336{
337 sysarg_t sc_args[6];
338 int rc;
339
340 /* Read syscall arguments */
341 rc = udebug_args_read(sess, thread_hash, sc_args);
342
343 if (rc < 0) {
344 printf("error\n");
345 return;
346 }
347
348 if ((display_mask & DM_SYSCALL) != 0) {
349 /* Print syscall name and arguments */
350 printf("%s", syscall_desc[sc_id].name);
351 print_sc_args(sc_args, syscall_desc[sc_id].n_args);
352 }
353}
354
355static void event_syscall_e(unsigned thread_id, uintptr_t thread_hash,
356 unsigned sc_id, sysarg_t sc_rc)
357{
358 sysarg_t sc_args[6];
359 int rv_type;
360 int rc;
361
362 /* Read syscall arguments */
363 rc = udebug_args_read(sess, thread_hash, sc_args);
364
365// printf("[%d] ", thread_id);
366
367 if (rc < 0) {
368 printf("error\n");
369 return;
370 }
371
372 if ((display_mask & DM_SYSCALL) != 0) {
373 /* Print syscall return value */
374 rv_type = syscall_desc[sc_id].rv_type;
375 print_sc_retval(sc_rc, rv_type);
376 }
377
378 switch (sc_id) {
379 case SYS_IPC_CALL_ASYNC_FAST:
380 sc_ipc_call_async_fast(sc_args, sc_rc);
381 break;
382 case SYS_IPC_CALL_ASYNC_SLOW:
383 sc_ipc_call_async_slow(sc_args, sc_rc);
384 break;
385 case SYS_IPC_WAIT:
386 sc_ipc_wait(sc_args, sc_rc);
387 break;
388 default:
389 break;
390 }
391}
392
393static void event_thread_b(uintptr_t hash)
394{
395 printf("New thread, hash %p\n", (void *) hash);
396 thread_trace_start(hash);
397}
398
399static int trace_loop(void *thread_hash_arg)
400{
401 int rc;
402 unsigned ev_type;
403 uintptr_t thread_hash;
404 unsigned thread_id;
405 sysarg_t val0, val1;
406
407 thread_hash = (uintptr_t)thread_hash_arg;
408 thread_id = next_thread_id++;
409 if (thread_id >= THBUF_SIZE) {
410 printf("Too many threads.\n");
411 return ELIMIT;
412 }
413
414 printf("Start tracing thread [%u] (hash %p).\n",
415 thread_id, (void *) thread_hash);
416
417 while (!abort_trace) {
418
419 fibril_mutex_lock(&state_lock);
420 if (paused) {
421 printf("Thread [%u] paused. Press R to resume.\n",
422 thread_id);
423
424 while (paused)
425 fibril_condvar_wait(&state_cv, &state_lock);
426
427 printf("Thread [%u] resumed.\n", thread_id);
428 }
429 fibril_mutex_unlock(&state_lock);
430
431 /* Run thread until an event occurs */
432 rc = udebug_go(sess, thread_hash,
433 &ev_type, &val0, &val1);
434
435// printf("rc = %d, ev_type=%d\n", rc, ev_type);
436 if (ev_type == UDEBUG_EVENT_FINISHED) {
437 /* Done tracing this thread */
438 break;
439 }
440
441 if (rc >= 0) {
442 switch (ev_type) {
443 case UDEBUG_EVENT_SYSCALL_B:
444 event_syscall_b(thread_id, thread_hash, val0, (int)val1);
445 break;
446 case UDEBUG_EVENT_SYSCALL_E:
447 event_syscall_e(thread_id, thread_hash, val0, (int)val1);
448 break;
449 case UDEBUG_EVENT_STOP:
450 printf("Stop event\n");
451 fibril_mutex_lock(&state_lock);
452 paused = true;
453 fibril_mutex_unlock(&state_lock);
454 break;
455 case UDEBUG_EVENT_THREAD_B:
456 event_thread_b(val0);
457 break;
458 case UDEBUG_EVENT_THREAD_E:
459 printf("Thread %" PRIun " exited.\n", val0);
460 fibril_mutex_lock(&state_lock);
461 abort_trace = true;
462 fibril_condvar_broadcast(&state_cv);
463 fibril_mutex_unlock(&state_lock);
464 break;
465 default:
466 printf("Unknown event type %d.\n", ev_type);
467 break;
468 }
469 }
470
471 }
472
473 printf("Finished tracing thread [%d].\n", thread_id);
474 return 0;
475}
476
477void thread_trace_start(uintptr_t thread_hash)
478{
479 fid_t fid;
480
481 thash = thread_hash;
482
483 fid = fibril_create(trace_loop, (void *)thread_hash);
484 if (fid == 0) {
485 printf("Warning: Failed creating fibril\n");
486 }
487 fibril_add_ready(fid);
488}
489
490static loader_t *preload_task(const char *path, char **argv,
491 task_id_t *task_id)
492{
493 loader_t *ldr;
494 int rc;
495
496 /* Spawn a program loader */
497 ldr = loader_connect();
498 if (ldr == NULL)
499 return 0;
500
501 /* Get task ID. */
502 rc = loader_get_task_id(ldr, task_id);
503 if (rc != EOK)
504 goto error;
505
506 /* Send program pathname */
507 rc = loader_set_pathname(ldr, path);
508 if (rc != EOK)
509 goto error;
510
511 /* Send arguments */
512 rc = loader_set_args(ldr, (const char **) argv);
513 if (rc != EOK)
514 goto error;
515
516 /* Send default files */
517 int *files[4];
518 int fd_stdin;
519 int fd_stdout;
520 int fd_stderr;
521
522 if ((stdin != NULL) && (fhandle(stdin, &fd_stdin) == EOK))
523 files[0] = &fd_stdin;
524 else
525 files[0] = NULL;
526
527 if ((stdout != NULL) && (fhandle(stdout, &fd_stdout) == EOK))
528 files[1] = &fd_stdout;
529 else
530 files[1] = NULL;
531
532 if ((stderr != NULL) && (fhandle(stderr, &fd_stderr) == EOK))
533 files[2] = &fd_stderr;
534 else
535 files[2] = NULL;
536
537 files[3] = NULL;
538
539 rc = loader_set_files(ldr, files);
540 if (rc != EOK)
541 goto error;
542
543 /* Load the program. */
544 rc = loader_load_program(ldr);
545 if (rc != EOK)
546 goto error;
547
548 /* Success */
549 return ldr;
550
551 /* Error exit */
552error:
553 loader_abort(ldr);
554 return NULL;
555}
556
557static int cev_fibril(void *arg)
558{
559 (void) arg;
560
561 console_ctrl_t *console = console_init(stdin, stdout);
562
563 while (true) {
564 fibril_mutex_lock(&state_lock);
565 while (cev_valid)
566 fibril_condvar_wait(&state_cv, &state_lock);
567 fibril_mutex_unlock(&state_lock);
568
569 if (!console_get_kbd_event(console, &cev))
570 return -1;
571
572 fibril_mutex_lock(&state_lock);
573 cev_valid = true;
574 fibril_condvar_broadcast(&state_cv);
575 fibril_mutex_unlock(&state_lock);
576 }
577}
578
579static void trace_task(task_id_t task_id)
580{
581 kbd_event_t ev;
582 bool done;
583 int i;
584 int rc;
585
586 ipcp_init();
587
588 rc = get_thread_list();
589 if (rc < 0) {
590 printf("Failed to get thread list (error %d)\n", rc);
591 return;
592 }
593
594 abort_trace = false;
595
596 for (i = 0; i < n_threads; i++) {
597 thread_trace_start(thread_hash_buf[i]);
598 }
599
600 done = false;
601
602 while (!done) {
603 fibril_mutex_lock(&state_lock);
604 while (!cev_valid && !abort_trace)
605 fibril_condvar_wait(&state_cv, &state_lock);
606 fibril_mutex_unlock(&state_lock);
607
608 ev = cev;
609
610 fibril_mutex_lock(&state_lock);
611 cev_valid = false;
612 fibril_condvar_broadcast(&state_cv);
613 fibril_mutex_unlock(&state_lock);
614
615 if (abort_trace)
616 break;
617
618 if (ev.type != KEY_PRESS)
619 continue;
620
621 switch (ev.key) {
622 case KC_Q:
623 done = true;
624 break;
625 case KC_P:
626 printf("Pause...\n");
627 rc = udebug_stop(sess, thash);
628 if (rc != EOK)
629 printf("Error: stop -> %d\n", rc);
630 break;
631 case KC_R:
632 fibril_mutex_lock(&state_lock);
633 paused = false;
634 fibril_condvar_broadcast(&state_cv);
635 fibril_mutex_unlock(&state_lock);
636 printf("Resume...\n");
637 break;
638 default:
639 break;
640 }
641 }
642
643 printf("\nTerminate debugging session...\n");
644 abort_trace = true;
645 udebug_end(sess);
646 async_hangup(sess);
647
648 ipcp_cleanup();
649
650 printf("Done\n");
651 return;
652}
653
654static void main_init(void)
655{
656 proto_t *p;
657 oper_t *o;
658
659 val_type_t arg_def[OPER_MAX_ARGS] = {
660 V_INTEGER,
661 V_INTEGER,
662 V_INTEGER,
663 V_INTEGER,
664 V_INTEGER
665 };
666
667 val_type_t resp_def[OPER_MAX_ARGS] = {
668 V_INTEGER,
669 V_INTEGER,
670 V_INTEGER,
671 V_INTEGER,
672 V_INTEGER
673 };
674
675 next_thread_id = 1;
676 paused = false;
677 cev_valid = false;
678
679 fibril_mutex_initialize(&state_lock);
680 fibril_condvar_initialize(&state_cv);
681
682 proto_init();
683
684 p = proto_new("vfs");
685 o = oper_new("open", 2, arg_def, V_INT_ERRNO, 0, resp_def);
686 proto_add_oper(p, VFS_IN_OPEN, o);
687 o = oper_new("read", 1, arg_def, V_ERRNO, 1, resp_def);
688 proto_add_oper(p, VFS_IN_READ, o);
689 o = oper_new("write", 1, arg_def, V_ERRNO, 1, resp_def);
690 proto_add_oper(p, VFS_IN_WRITE, o);
691 o = oper_new("seek", 3, arg_def, V_ERRNO, 0, resp_def);
692 proto_add_oper(p, VFS_IN_SEEK, o);
693 o = oper_new("truncate", 5, arg_def, V_ERRNO, 0, resp_def);
694 proto_add_oper(p, VFS_IN_TRUNCATE, o);
695 o = oper_new("fstat", 1, arg_def, V_ERRNO, 0, resp_def);
696 proto_add_oper(p, VFS_IN_FSTAT, o);
697 o = oper_new("close", 1, arg_def, V_ERRNO, 0, resp_def);
698 proto_add_oper(p, VFS_IN_CLOSE, o);
699 o = oper_new("mount", 2, arg_def, V_ERRNO, 0, resp_def);
700 proto_add_oper(p, VFS_IN_MOUNT, o);
701/* o = oper_new("unmount", 0, arg_def);
702 proto_add_oper(p, VFS_IN_UNMOUNT, o);*/
703 o = oper_new("sync", 1, arg_def, V_ERRNO, 0, resp_def);
704 proto_add_oper(p, VFS_IN_SYNC, o);
705 o = oper_new("mkdir", 1, arg_def, V_ERRNO, 0, resp_def);
706 proto_add_oper(p, VFS_IN_MKDIR, o);
707 o = oper_new("unlink", 0, arg_def, V_ERRNO, 0, resp_def);
708 proto_add_oper(p, VFS_IN_UNLINK, o);
709 o = oper_new("rename", 0, arg_def, V_ERRNO, 0, resp_def);
710 proto_add_oper(p, VFS_IN_RENAME, o);
711 o = oper_new("stat", 0, arg_def, V_ERRNO, 0, resp_def);
712 proto_add_oper(p, VFS_IN_STAT, o);
713
714 proto_register(SERVICE_VFS, p);
715}
716
717static void print_syntax()
718{
719 printf("Syntax:\n");
720 printf("\ttrace [+<events>] <executable> [<arg1> [...]]\n");
721 printf("or\ttrace [+<events>] -t <task_id>\n");
722 printf("Events: (default is +tp)\n");
723 printf("\n");
724 printf("\tt ... Thread creation and termination\n");
725 printf("\ts ... System calls\n");
726 printf("\ti ... Low-level IPC\n");
727 printf("\tp ... Protocol level\n");
728 printf("\n");
729 printf("Examples:\n");
730 printf("\ttrace +s /app/tetris\n");
731 printf("\ttrace +tsip -t 12\n");
732}
733
734static display_mask_t parse_display_mask(const char *text)
735{
736 display_mask_t dm = 0;
737 const char *c = text;
738
739 while (*c) {
740 switch (*c) {
741 case 't':
742 dm = dm | DM_THREAD;
743 break;
744 case 's':
745 dm = dm | DM_SYSCALL;
746 break;
747 case 'i':
748 dm = dm | DM_IPC;
749 break;
750 case 'p':
751 dm = dm | DM_SYSTEM | DM_USER;
752 break;
753 default:
754 printf("Unexpected event type '%c'.\n", *c);
755 exit(1);
756 }
757
758 ++c;
759 }
760
761 return dm;
762}
763
764static int parse_args(int argc, char *argv[])
765{
766 char *err_p;
767
768 task_id = 0;
769
770 --argc;
771 ++argv;
772
773 while (argc > 0) {
774 char *arg = *argv;
775 if (arg[0] == '+') {
776 display_mask = parse_display_mask(&arg[1]);
777 } else if (arg[0] == '-') {
778 if (arg[1] == 't') {
779 /* Trace an already running task */
780 --argc;
781 ++argv;
782 task_id = strtol(*argv, &err_p, 10);
783 task_ldr = NULL;
784 task_wait_for = false;
785 if (*err_p) {
786 printf("Task ID syntax error\n");
787 print_syntax();
788 return -1;
789 }
790 } else {
791 printf("Uknown option '%c'\n", arg[0]);
792 print_syntax();
793 return -1;
794 }
795 } else {
796 break;
797 }
798
799 --argc;
800 ++argv;
801 }
802
803 if (task_id != 0) {
804 if (argc == 0)
805 return 0;
806 printf("Extra arguments\n");
807 print_syntax();
808 return -1;
809 }
810
811 if (argc < 1) {
812 printf("Missing argument\n");
813 print_syntax();
814 return -1;
815 }
816
817 /* Preload the specified program file. */
818 printf("Spawning '%s' with arguments:\n", *argv);
819
820 char **cp = argv;
821 while (*cp)
822 printf("'%s'\n", *cp++);
823
824 task_ldr = preload_task(*argv, argv, &task_id);
825 task_wait_for = true;
826
827 return 0;
828}
829
830int main(int argc, char *argv[])
831{
832 int rc;
833 task_exit_t texit;
834 int retval;
835
836 printf("System Call / IPC Tracer\n");
837 printf("Controls: Q - Quit, P - Pause, R - Resume\n");
838
839 display_mask = DM_THREAD | DM_SYSTEM | DM_USER;
840
841 if (parse_args(argc, argv) < 0)
842 return 1;
843
844 main_init();
845
846 rc = connect_task(task_id);
847 if (rc < 0) {
848 printf("Failed connecting to task %" PRIu64 ".\n", task_id);
849 return 1;
850 }
851
852 printf("Connected to task %" PRIu64 ".\n", task_id);
853
854 if (task_ldr != NULL)
855 program_run();
856
857 cev_fibril_start();
858 trace_task(task_id);
859
860 if (task_wait_for) {
861 printf("Waiting for task to exit.\n");
862
863 rc = task_wait(task_id, &texit, &retval);
864 if (rc != EOK) {
865 printf("Failed waiting for task.\n");
866 return -1;
867 }
868
869 if (texit == TASK_EXIT_NORMAL) {
870 printf("Task exited normally, return value %d.\n",
871 retval);
872 } else {
873 printf("Task exited unexpectedly.\n");
874 }
875 }
876
877 return 0;
878}
879
880/** @}
881 */
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