Commit | Line | Data |
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61bb466e | 1 | /* Machine independent support for QNX Neutrino /proc (process file system) |
0df8b418 | 2 | for GDB. Written by Colin Burgess at QNX Software Systems Limited. |
61bb466e | 3 | |
32d0add0 | 4 | Copyright (C) 2003-2015 Free Software Foundation, Inc. |
61bb466e KW |
5 | |
6 | Contributed by QNX Software Systems Ltd. | |
7 | ||
8 | This file is part of GDB. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
61bb466e KW |
13 | (at your option) any later version. |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
61bb466e KW |
22 | |
23 | #include "defs.h" | |
24 | ||
25 | #include <fcntl.h> | |
26 | #include <spawn.h> | |
27 | #include <sys/debug.h> | |
28 | #include <sys/procfs.h> | |
29 | #include <sys/neutrino.h> | |
30 | #include <sys/syspage.h> | |
2978b111 | 31 | #include <dirent.h> |
61bb466e | 32 | #include <sys/netmgr.h> |
61bb466e KW |
33 | #include "gdbcore.h" |
34 | #include "inferior.h" | |
35 | #include "target.h" | |
36 | #include "objfiles.h" | |
37 | #include "gdbthread.h" | |
38 | #include "nto-tdep.h" | |
39 | #include "command.h" | |
40 | #include "regcache.h" | |
5ea03926 | 41 | #include "solib.h" |
ee8e9165 | 42 | #include "inf-child.h" |
61bb466e KW |
43 | |
44 | #define NULL_PID 0 | |
45 | #define _DEBUG_FLAG_TRACE (_DEBUG_FLAG_TRACE_EXEC|_DEBUG_FLAG_TRACE_RD|\ | |
46 | _DEBUG_FLAG_TRACE_WR|_DEBUG_FLAG_TRACE_MODIFY) | |
47 | ||
61bb466e KW |
48 | int ctl_fd; |
49 | ||
50 | static void (*ofunc) (); | |
51 | ||
52 | static procfs_run run; | |
53 | ||
61bb466e KW |
54 | static ptid_t do_attach (ptid_t ptid); |
55 | ||
5461485a TT |
56 | static int procfs_can_use_hw_breakpoint (struct target_ops *self, |
57 | int, int, int); | |
61bb466e | 58 | |
7bb99c53 TT |
59 | static int procfs_insert_hw_watchpoint (struct target_ops *self, |
60 | CORE_ADDR addr, int len, int type, | |
a8f42b45 | 61 | struct expression *cond); |
61bb466e | 62 | |
11b5219a TT |
63 | static int procfs_remove_hw_watchpoint (struct target_ops *self, |
64 | CORE_ADDR addr, int len, int type, | |
a8f42b45 | 65 | struct expression *cond); |
61bb466e | 66 | |
6a109b6b | 67 | static int procfs_stopped_by_watchpoint (struct target_ops *ops); |
61bb466e | 68 | |
6a3cb8e8 | 69 | /* These two globals are only ever set in procfs_open_1, but are |
61bb466e KW |
70 | referenced elsewhere. 'nto_procfs_node' is a flag used to say |
71 | whether we are local, or we should get the current node descriptor | |
72 | for the remote QNX node. */ | |
73 | static char nto_procfs_path[PATH_MAX] = { "/proc" }; | |
74 | static unsigned nto_procfs_node = ND_LOCAL_NODE; | |
75 | ||
76 | /* Return the current QNX Node, or error out. This is a simple | |
77 | wrapper for the netmgr_strtond() function. The reason this | |
78 | is required is because QNX node descriptors are transient so | |
79 | we have to re-acquire them every time. */ | |
80 | static unsigned | |
d737fd7f | 81 | nto_node (void) |
61bb466e KW |
82 | { |
83 | unsigned node; | |
84 | ||
d737fd7f | 85 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0) |
61bb466e KW |
86 | return ND_LOCAL_NODE; |
87 | ||
d737fd7f | 88 | node = netmgr_strtond (nto_procfs_path, 0); |
61bb466e | 89 | if (node == -1) |
8a3fe4f8 | 90 | error (_("Lost the QNX node. Debug session probably over.")); |
61bb466e KW |
91 | |
92 | return (node); | |
93 | } | |
94 | ||
d737fd7f KW |
95 | static enum gdb_osabi |
96 | procfs_is_nto_target (bfd *abfd) | |
97 | { | |
98 | return GDB_OSABI_QNXNTO; | |
99 | } | |
100 | ||
6a3cb8e8 PA |
101 | /* This is called when we call 'target native' or 'target procfs |
102 | <arg>' from the (gdb) prompt. For QNX6 (nto), the only valid arg | |
103 | will be a QNX node string, eg: "/net/some_node". If arg is not a | |
104 | valid QNX node, we will default to local. */ | |
61bb466e | 105 | static void |
014f9477 | 106 | procfs_open_1 (struct target_ops *ops, const char *arg, int from_tty) |
61bb466e KW |
107 | { |
108 | char *nodestr; | |
109 | char *endstr; | |
110 | char buffer[50]; | |
111 | int fd, total_size; | |
112 | procfs_sysinfo *sysinfo; | |
9fe4a216 | 113 | struct cleanup *cleanups; |
61bb466e | 114 | |
6a3cb8e8 PA |
115 | /* Offer to kill previous inferiors before opening this target. */ |
116 | target_preopen (from_tty); | |
117 | ||
d737fd7f KW |
118 | nto_is_nto_target = procfs_is_nto_target; |
119 | ||
61bb466e KW |
120 | /* Set the default node used for spawning to this one, |
121 | and only override it if there is a valid arg. */ | |
122 | ||
123 | nto_procfs_node = ND_LOCAL_NODE; | |
124 | nodestr = arg ? xstrdup (arg) : arg; | |
125 | ||
126 | init_thread_list (); | |
127 | ||
128 | if (nodestr) | |
129 | { | |
130 | nto_procfs_node = netmgr_strtond (nodestr, &endstr); | |
131 | if (nto_procfs_node == -1) | |
132 | { | |
133 | if (errno == ENOTSUP) | |
134 | printf_filtered ("QNX Net Manager not found.\n"); | |
135 | printf_filtered ("Invalid QNX node %s: error %d (%s).\n", nodestr, | |
dc5dd1eb | 136 | errno, safe_strerror (errno)); |
61bb466e KW |
137 | xfree (nodestr); |
138 | nodestr = NULL; | |
139 | nto_procfs_node = ND_LOCAL_NODE; | |
140 | } | |
141 | else if (*endstr) | |
142 | { | |
143 | if (*(endstr - 1) == '/') | |
144 | *(endstr - 1) = 0; | |
145 | else | |
146 | *endstr = 0; | |
147 | } | |
148 | } | |
d737fd7f KW |
149 | snprintf (nto_procfs_path, PATH_MAX - 1, "%s%s", nodestr ? nodestr : "", |
150 | "/proc"); | |
61bb466e KW |
151 | if (nodestr) |
152 | xfree (nodestr); | |
153 | ||
154 | fd = open (nto_procfs_path, O_RDONLY); | |
155 | if (fd == -1) | |
156 | { | |
157 | printf_filtered ("Error opening %s : %d (%s)\n", nto_procfs_path, errno, | |
dc5dd1eb | 158 | safe_strerror (errno)); |
8a3fe4f8 | 159 | error (_("Invalid procfs arg")); |
61bb466e | 160 | } |
9fe4a216 | 161 | cleanups = make_cleanup_close (fd); |
61bb466e KW |
162 | |
163 | sysinfo = (void *) buffer; | |
164 | if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, sizeof buffer, 0) != EOK) | |
165 | { | |
166 | printf_filtered ("Error getting size: %d (%s)\n", errno, | |
dc5dd1eb | 167 | safe_strerror (errno)); |
8a3fe4f8 | 168 | error (_("Devctl failed.")); |
61bb466e KW |
169 | } |
170 | else | |
171 | { | |
172 | total_size = sysinfo->total_size; | |
173 | sysinfo = alloca (total_size); | |
174 | if (!sysinfo) | |
175 | { | |
176 | printf_filtered ("Memory error: %d (%s)\n", errno, | |
dc5dd1eb | 177 | safe_strerror (errno)); |
8a3fe4f8 | 178 | error (_("alloca failed.")); |
61bb466e KW |
179 | } |
180 | else | |
181 | { | |
182 | if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, total_size, 0) != EOK) | |
183 | { | |
184 | printf_filtered ("Error getting sysinfo: %d (%s)\n", errno, | |
dc5dd1eb | 185 | safe_strerror (errno)); |
8a3fe4f8 | 186 | error (_("Devctl failed.")); |
61bb466e KW |
187 | } |
188 | else | |
189 | { | |
190 | if (sysinfo->type != | |
1143fffb | 191 | nto_map_arch_to_cputype (gdbarch_bfd_arch_info |
f5656ead | 192 | (target_gdbarch ())->arch_name)) |
9fe4a216 | 193 | error (_("Invalid target CPU.")); |
61bb466e KW |
194 | } |
195 | } | |
196 | } | |
9fe4a216 | 197 | do_cleanups (cleanups); |
6a3cb8e8 PA |
198 | |
199 | inf_child_open_target (ops, arg, from_tty); | |
61bb466e KW |
200 | printf_filtered ("Debugging using %s\n", nto_procfs_path); |
201 | } | |
202 | ||
203 | static void | |
204 | procfs_set_thread (ptid_t ptid) | |
205 | { | |
206 | pid_t tid; | |
207 | ||
208 | tid = ptid_get_tid (ptid); | |
209 | devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0); | |
210 | } | |
211 | ||
212 | /* Return nonzero if the thread TH is still alive. */ | |
213 | static int | |
28439f5e | 214 | procfs_thread_alive (struct target_ops *ops, ptid_t ptid) |
61bb466e KW |
215 | { |
216 | pid_t tid; | |
745a434e AR |
217 | pid_t pid; |
218 | procfs_status status; | |
219 | int err; | |
61bb466e KW |
220 | |
221 | tid = ptid_get_tid (ptid); | |
745a434e AR |
222 | pid = ptid_get_pid (ptid); |
223 | ||
224 | if (kill (pid, 0) == -1) | |
225 | return 0; | |
226 | ||
227 | status.tid = tid; | |
228 | if ((err = devctl (ctl_fd, DCMD_PROC_TIDSTATUS, | |
229 | &status, sizeof (status), 0)) != EOK) | |
230 | return 0; | |
231 | ||
232 | /* Thread is alive or dead but not yet joined, | |
233 | or dead and there is an alive (or dead unjoined) thread with | |
234 | higher tid. | |
235 | ||
236 | If the tid is not the same as requested, requested tid is dead. */ | |
237 | return (status.tid == tid) && (status.state != STATE_DEAD); | |
238 | } | |
239 | ||
240 | static void | |
241 | update_thread_private_data_name (struct thread_info *new_thread, | |
242 | const char *newname) | |
243 | { | |
244 | int newnamelen; | |
245 | struct private_thread_info *pti; | |
246 | ||
247 | gdb_assert (newname != NULL); | |
248 | gdb_assert (new_thread != NULL); | |
249 | newnamelen = strlen (newname); | |
250 | if (!new_thread->private) | |
251 | { | |
252 | new_thread->private = xmalloc (offsetof (struct private_thread_info, | |
253 | name) | |
254 | + newnamelen + 1); | |
255 | memcpy (new_thread->private->name, newname, newnamelen + 1); | |
256 | } | |
257 | else if (strcmp (newname, new_thread->private->name) != 0) | |
258 | { | |
259 | /* Reallocate if neccessary. */ | |
260 | int oldnamelen = strlen (new_thread->private->name); | |
261 | ||
262 | if (oldnamelen < newnamelen) | |
263 | new_thread->private = xrealloc (new_thread->private, | |
264 | offsetof (struct private_thread_info, | |
265 | name) | |
266 | + newnamelen + 1); | |
267 | memcpy (new_thread->private->name, newname, newnamelen + 1); | |
268 | } | |
269 | } | |
270 | ||
271 | static void | |
272 | update_thread_private_data (struct thread_info *new_thread, | |
273 | pthread_t tid, int state, int flags) | |
274 | { | |
275 | struct private_thread_info *pti; | |
276 | procfs_info pidinfo; | |
277 | struct _thread_name *tn; | |
278 | procfs_threadctl tctl; | |
279 | ||
280 | #if _NTO_VERSION > 630 | |
281 | gdb_assert (new_thread != NULL); | |
282 | ||
283 | if (devctl (ctl_fd, DCMD_PROC_INFO, &pidinfo, | |
284 | sizeof(pidinfo), 0) != EOK) | |
285 | return; | |
286 | ||
287 | memset (&tctl, 0, sizeof (tctl)); | |
288 | tctl.cmd = _NTO_TCTL_NAME; | |
289 | tn = (struct _thread_name *) (&tctl.data); | |
290 | ||
291 | /* Fetch name for the given thread. */ | |
292 | tctl.tid = tid; | |
293 | tn->name_buf_len = sizeof (tctl.data) - sizeof (*tn); | |
294 | tn->new_name_len = -1; /* Getting, not setting. */ | |
295 | if (devctl (ctl_fd, DCMD_PROC_THREADCTL, &tctl, sizeof (tctl), NULL) != EOK) | |
296 | tn->name_buf[0] = '\0'; | |
297 | ||
298 | tn->name_buf[_NTO_THREAD_NAME_MAX] = '\0'; | |
299 | ||
300 | update_thread_private_data_name (new_thread, tn->name_buf); | |
301 | ||
302 | pti = (struct private_thread_info *) new_thread->private; | |
303 | pti->tid = tid; | |
304 | pti->state = state; | |
305 | pti->flags = flags; | |
306 | #endif /* _NTO_VERSION */ | |
61bb466e KW |
307 | } |
308 | ||
94c74239 | 309 | static void |
e8032dde | 310 | procfs_update_thread_list (struct target_ops *ops) |
61bb466e KW |
311 | { |
312 | procfs_status status; | |
313 | pid_t pid; | |
314 | ptid_t ptid; | |
745a434e AR |
315 | pthread_t tid; |
316 | struct thread_info *new_thread; | |
61bb466e KW |
317 | |
318 | if (ctl_fd == -1) | |
319 | return; | |
320 | ||
e8032dde PA |
321 | prune_threads (); |
322 | ||
61bb466e KW |
323 | pid = ptid_get_pid (inferior_ptid); |
324 | ||
745a434e AR |
325 | status.tid = 1; |
326 | ||
327 | for (tid = 1;; ++tid) | |
61bb466e | 328 | { |
745a434e AR |
329 | if (status.tid == tid |
330 | && (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0) | |
331 | != EOK)) | |
61bb466e | 332 | break; |
745a434e AR |
333 | if (status.tid != tid) |
334 | /* The reason why this would not be equal is that devctl might have | |
335 | returned different tid, meaning the requested tid no longer exists | |
336 | (e.g. thread exited). */ | |
337 | continue; | |
338 | ptid = ptid_build (pid, 0, tid); | |
339 | new_thread = find_thread_ptid (ptid); | |
340 | if (!new_thread) | |
341 | new_thread = add_thread (ptid); | |
342 | update_thread_private_data (new_thread, tid, status.state, 0); | |
343 | status.tid++; | |
61bb466e KW |
344 | } |
345 | return; | |
346 | } | |
347 | ||
9fe4a216 TT |
348 | static void |
349 | do_closedir_cleanup (void *dir) | |
350 | { | |
351 | closedir (dir); | |
352 | } | |
353 | ||
61bb466e KW |
354 | void |
355 | procfs_pidlist (char *args, int from_tty) | |
356 | { | |
357 | DIR *dp = NULL; | |
358 | struct dirent *dirp = NULL; | |
61bb466e KW |
359 | char buf[512]; |
360 | procfs_info *pidinfo = NULL; | |
361 | procfs_debuginfo *info = NULL; | |
362 | procfs_status *status = NULL; | |
363 | pid_t num_threads = 0; | |
364 | pid_t pid; | |
365 | char name[512]; | |
9fe4a216 | 366 | struct cleanup *cleanups; |
61bb466e KW |
367 | |
368 | dp = opendir (nto_procfs_path); | |
369 | if (dp == NULL) | |
370 | { | |
dc5dd1eb | 371 | fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)", |
d737fd7f | 372 | nto_procfs_path, errno, safe_strerror (errno)); |
61bb466e KW |
373 | return; |
374 | } | |
375 | ||
9fe4a216 TT |
376 | cleanups = make_cleanup (do_closedir_cleanup, dp); |
377 | ||
61bb466e KW |
378 | /* Start scan at first pid. */ |
379 | rewinddir (dp); | |
380 | ||
381 | do | |
382 | { | |
9fe4a216 TT |
383 | int fd; |
384 | struct cleanup *inner_cleanup; | |
385 | ||
61bb466e KW |
386 | /* Get the right pid and procfs path for the pid. */ |
387 | do | |
388 | { | |
389 | dirp = readdir (dp); | |
390 | if (dirp == NULL) | |
391 | { | |
9fe4a216 | 392 | do_cleanups (cleanups); |
61bb466e KW |
393 | return; |
394 | } | |
dc5dd1eb | 395 | snprintf (buf, 511, "%s/%s/as", nto_procfs_path, dirp->d_name); |
61bb466e KW |
396 | pid = atoi (dirp->d_name); |
397 | } | |
398 | while (pid == 0); | |
399 | ||
0df8b418 | 400 | /* Open the procfs path. */ |
61bb466e KW |
401 | fd = open (buf, O_RDONLY); |
402 | if (fd == -1) | |
403 | { | |
dc5dd1eb | 404 | fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n", |
d737fd7f | 405 | buf, errno, safe_strerror (errno)); |
9fe4a216 | 406 | do_cleanups (cleanups); |
61bb466e KW |
407 | return; |
408 | } | |
9fe4a216 | 409 | inner_cleanup = make_cleanup_close (fd); |
61bb466e KW |
410 | |
411 | pidinfo = (procfs_info *) buf; | |
412 | if (devctl (fd, DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK) | |
413 | { | |
dc5dd1eb | 414 | fprintf_unfiltered (gdb_stderr, |
d737fd7f KW |
415 | "devctl DCMD_PROC_INFO failed - %d (%s)\n", |
416 | errno, safe_strerror (errno)); | |
61bb466e KW |
417 | break; |
418 | } | |
419 | num_threads = pidinfo->num_threads; | |
420 | ||
421 | info = (procfs_debuginfo *) buf; | |
422 | if (devctl (fd, DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0) != EOK) | |
423 | strcpy (name, "unavailable"); | |
424 | else | |
425 | strcpy (name, info->path); | |
426 | ||
427 | /* Collect state info on all the threads. */ | |
428 | status = (procfs_status *) buf; | |
429 | for (status->tid = 1; status->tid <= num_threads; status->tid++) | |
430 | { | |
431 | if (devctl (fd, DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0) != EOK | |
432 | && status->tid != 0) | |
433 | break; | |
434 | if (status->tid != 0) | |
435 | printf_filtered ("%s - %d/%d\n", name, pid, status->tid); | |
436 | } | |
9fe4a216 TT |
437 | |
438 | do_cleanups (inner_cleanup); | |
61bb466e KW |
439 | } |
440 | while (dirp != NULL); | |
441 | ||
9fe4a216 | 442 | do_cleanups (cleanups); |
61bb466e KW |
443 | return; |
444 | } | |
445 | ||
446 | void | |
447 | procfs_meminfo (char *args, int from_tty) | |
448 | { | |
449 | procfs_mapinfo *mapinfos = NULL; | |
450 | static int num_mapinfos = 0; | |
451 | procfs_mapinfo *mapinfo_p, *mapinfo_p2; | |
452 | int flags = ~0, err, num, i, j; | |
453 | ||
454 | struct | |
455 | { | |
456 | procfs_debuginfo info; | |
457 | char buff[_POSIX_PATH_MAX]; | |
458 | } map; | |
459 | ||
460 | struct info | |
461 | { | |
462 | unsigned addr; | |
463 | unsigned size; | |
464 | unsigned flags; | |
465 | unsigned debug_vaddr; | |
466 | unsigned long long offset; | |
467 | }; | |
468 | ||
469 | struct printinfo | |
470 | { | |
471 | unsigned long long ino; | |
472 | unsigned dev; | |
473 | struct info text; | |
474 | struct info data; | |
475 | char name[256]; | |
476 | } printme; | |
477 | ||
478 | /* Get the number of map entrys. */ | |
479 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num); | |
480 | if (err != EOK) | |
481 | { | |
d737fd7f KW |
482 | printf ("failed devctl num mapinfos - %d (%s)\n", err, |
483 | safe_strerror (err)); | |
61bb466e KW |
484 | return; |
485 | } | |
486 | ||
487 | mapinfos = xmalloc (num * sizeof (procfs_mapinfo)); | |
488 | ||
489 | num_mapinfos = num; | |
490 | mapinfo_p = mapinfos; | |
491 | ||
492 | /* Fill the map entrys. */ | |
493 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, mapinfo_p, num | |
494 | * sizeof (procfs_mapinfo), &num); | |
495 | if (err != EOK) | |
496 | { | |
5483d879 | 497 | printf ("failed devctl mapinfos - %d (%s)\n", err, safe_strerror (err)); |
61bb466e KW |
498 | xfree (mapinfos); |
499 | return; | |
500 | } | |
501 | ||
502 | num = min (num, num_mapinfos); | |
503 | ||
504 | /* Run through the list of mapinfos, and store the data and text info | |
505 | so we can print it at the bottom of the loop. */ | |
506 | for (mapinfo_p = mapinfos, i = 0; i < num; i++, mapinfo_p++) | |
507 | { | |
508 | if (!(mapinfo_p->flags & flags)) | |
509 | mapinfo_p->ino = 0; | |
510 | ||
511 | if (mapinfo_p->ino == 0) /* Already visited. */ | |
512 | continue; | |
513 | ||
514 | map.info.vaddr = mapinfo_p->vaddr; | |
515 | ||
516 | err = devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
517 | if (err != EOK) | |
518 | continue; | |
519 | ||
520 | memset (&printme, 0, sizeof printme); | |
521 | printme.dev = mapinfo_p->dev; | |
522 | printme.ino = mapinfo_p->ino; | |
523 | printme.text.addr = mapinfo_p->vaddr; | |
524 | printme.text.size = mapinfo_p->size; | |
525 | printme.text.flags = mapinfo_p->flags; | |
526 | printme.text.offset = mapinfo_p->offset; | |
527 | printme.text.debug_vaddr = map.info.vaddr; | |
528 | strcpy (printme.name, map.info.path); | |
529 | ||
530 | /* Check for matching data. */ | |
531 | for (mapinfo_p2 = mapinfos, j = 0; j < num; j++, mapinfo_p2++) | |
532 | { | |
533 | if (mapinfo_p2->vaddr != mapinfo_p->vaddr | |
534 | && mapinfo_p2->ino == mapinfo_p->ino | |
535 | && mapinfo_p2->dev == mapinfo_p->dev) | |
536 | { | |
537 | map.info.vaddr = mapinfo_p2->vaddr; | |
538 | err = | |
539 | devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
540 | if (err != EOK) | |
541 | continue; | |
542 | ||
543 | if (strcmp (map.info.path, printme.name)) | |
544 | continue; | |
545 | ||
546 | /* Lower debug_vaddr is always text, if nessessary, swap. */ | |
547 | if ((int) map.info.vaddr < (int) printme.text.debug_vaddr) | |
548 | { | |
549 | memcpy (&(printme.data), &(printme.text), | |
550 | sizeof (printme.data)); | |
551 | printme.text.addr = mapinfo_p2->vaddr; | |
552 | printme.text.size = mapinfo_p2->size; | |
553 | printme.text.flags = mapinfo_p2->flags; | |
554 | printme.text.offset = mapinfo_p2->offset; | |
555 | printme.text.debug_vaddr = map.info.vaddr; | |
556 | } | |
557 | else | |
558 | { | |
559 | printme.data.addr = mapinfo_p2->vaddr; | |
560 | printme.data.size = mapinfo_p2->size; | |
561 | printme.data.flags = mapinfo_p2->flags; | |
562 | printme.data.offset = mapinfo_p2->offset; | |
563 | printme.data.debug_vaddr = map.info.vaddr; | |
564 | } | |
565 | mapinfo_p2->ino = 0; | |
566 | } | |
567 | } | |
568 | mapinfo_p->ino = 0; | |
569 | ||
570 | printf_filtered ("%s\n", printme.name); | |
571 | printf_filtered ("\ttext=%08x bytes @ 0x%08x\n", printme.text.size, | |
572 | printme.text.addr); | |
573 | printf_filtered ("\t\tflags=%08x\n", printme.text.flags); | |
574 | printf_filtered ("\t\tdebug=%08x\n", printme.text.debug_vaddr); | |
2244ba2e | 575 | printf_filtered ("\t\toffset=%s\n", phex (printme.text.offset, 8)); |
61bb466e KW |
576 | if (printme.data.size) |
577 | { | |
578 | printf_filtered ("\tdata=%08x bytes @ 0x%08x\n", printme.data.size, | |
579 | printme.data.addr); | |
580 | printf_filtered ("\t\tflags=%08x\n", printme.data.flags); | |
581 | printf_filtered ("\t\tdebug=%08x\n", printme.data.debug_vaddr); | |
2244ba2e | 582 | printf_filtered ("\t\toffset=%s\n", phex (printme.data.offset, 8)); |
61bb466e KW |
583 | } |
584 | printf_filtered ("\tdev=0x%x\n", printme.dev); | |
585 | printf_filtered ("\tino=0x%x\n", (unsigned int) printme.ino); | |
586 | } | |
587 | xfree (mapinfos); | |
588 | return; | |
589 | } | |
590 | ||
591 | /* Print status information about what we're accessing. */ | |
592 | static void | |
593 | procfs_files_info (struct target_ops *ignore) | |
594 | { | |
181e7f93 PA |
595 | struct inferior *inf = current_inferior (); |
596 | ||
61bb466e | 597 | printf_unfiltered ("\tUsing the running image of %s %s via %s.\n", |
3fdfcbf1 | 598 | inf->attach_flag ? "attached" : "child", |
61bb466e KW |
599 | target_pid_to_str (inferior_ptid), nto_procfs_path); |
600 | } | |
601 | ||
61bb466e KW |
602 | /* Attach to process PID, then initialize for debugging it. */ |
603 | static void | |
c0939df1 | 604 | procfs_attach (struct target_ops *ops, const char *args, int from_tty) |
61bb466e KW |
605 | { |
606 | char *exec_file; | |
607 | int pid; | |
181e7f93 | 608 | struct inferior *inf; |
61bb466e | 609 | |
74164c56 | 610 | pid = parse_pid_to_attach (args); |
61bb466e KW |
611 | |
612 | if (pid == getpid ()) | |
8a3fe4f8 | 613 | error (_("Attaching GDB to itself is not a good idea...")); |
61bb466e KW |
614 | |
615 | if (from_tty) | |
616 | { | |
617 | exec_file = (char *) get_exec_file (0); | |
618 | ||
619 | if (exec_file) | |
620 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
621 | target_pid_to_str (pid_to_ptid (pid))); | |
622 | else | |
623 | printf_unfiltered ("Attaching to %s\n", | |
624 | target_pid_to_str (pid_to_ptid (pid))); | |
625 | ||
626 | gdb_flush (gdb_stdout); | |
627 | } | |
628 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
6c95b8df PA |
629 | inf = current_inferior (); |
630 | inferior_appeared (inf, pid); | |
181e7f93 | 631 | inf->attach_flag = 1; |
7f9f62ba | 632 | |
6a3cb8e8 PA |
633 | if (!target_is_pushed (ops)) |
634 | push_target (ops); | |
7f9f62ba | 635 | |
e8032dde | 636 | procfs_update_thread_list (ops); |
61bb466e KW |
637 | } |
638 | ||
639 | static void | |
f045800c | 640 | procfs_post_attach (struct target_ops *self, pid_t pid) |
61bb466e | 641 | { |
61bb466e | 642 | if (exec_bfd) |
268a4a75 | 643 | solib_create_inferior_hook (0); |
61bb466e KW |
644 | } |
645 | ||
646 | static ptid_t | |
647 | do_attach (ptid_t ptid) | |
648 | { | |
649 | procfs_status status; | |
650 | struct sigevent event; | |
dc5dd1eb | 651 | char path[PATH_MAX]; |
61bb466e | 652 | |
dfd4cc63 LM |
653 | snprintf (path, PATH_MAX - 1, "%s/%d/as", nto_procfs_path, |
654 | ptid_get_pid (ptid)); | |
61bb466e KW |
655 | ctl_fd = open (path, O_RDWR); |
656 | if (ctl_fd == -1) | |
8a3fe4f8 | 657 | error (_("Couldn't open proc file %s, error %d (%s)"), path, errno, |
dc5dd1eb | 658 | safe_strerror (errno)); |
61bb466e | 659 | if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK) |
8a3fe4f8 | 660 | error (_("Couldn't stop process")); |
61bb466e KW |
661 | |
662 | /* Define a sigevent for process stopped notification. */ | |
663 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
664 | event.sigev_signo = SIGUSR1; | |
665 | event.sigev_code = 0; | |
666 | event.sigev_value.sival_ptr = NULL; | |
667 | event.sigev_priority = -1; | |
668 | devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0); | |
669 | ||
670 | if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK | |
671 | && status.flags & _DEBUG_FLAG_STOPPED) | |
dfd4cc63 | 672 | SignalKill (nto_node (), ptid_get_pid (ptid), 0, SIGCONT, 0, 0); |
61bb466e | 673 | nto_init_solib_absolute_prefix (); |
dfd4cc63 | 674 | return ptid_build (ptid_get_pid (ptid), 0, status.tid); |
61bb466e KW |
675 | } |
676 | ||
677 | /* Ask the user what to do when an interrupt is received. */ | |
678 | static void | |
dc5dd1eb | 679 | interrupt_query (void) |
61bb466e KW |
680 | { |
681 | target_terminal_ours (); | |
682 | ||
9e2f0ad4 HZ |
683 | if (query (_("Interrupted while waiting for the program.\n\ |
684 | Give up (and stop debugging it)? "))) | |
61bb466e KW |
685 | { |
686 | target_mourn_inferior (); | |
039e3c22 | 687 | quit (); |
61bb466e KW |
688 | } |
689 | ||
690 | target_terminal_inferior (); | |
691 | } | |
692 | ||
693 | /* The user typed ^C twice. */ | |
694 | static void | |
695 | nto_interrupt_twice (int signo) | |
696 | { | |
697 | signal (signo, ofunc); | |
698 | interrupt_query (); | |
699 | signal (signo, nto_interrupt_twice); | |
700 | } | |
701 | ||
702 | static void | |
703 | nto_interrupt (int signo) | |
704 | { | |
705 | /* If this doesn't work, try more severe steps. */ | |
706 | signal (signo, nto_interrupt_twice); | |
707 | ||
f9c72d52 | 708 | target_stop (inferior_ptid); |
61bb466e KW |
709 | } |
710 | ||
711 | static ptid_t | |
117de6a9 | 712 | procfs_wait (struct target_ops *ops, |
47608cb1 | 713 | ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
61bb466e KW |
714 | { |
715 | sigset_t set; | |
716 | siginfo_t info; | |
717 | procfs_status status; | |
718 | static int exit_signo = 0; /* To track signals that cause termination. */ | |
719 | ||
720 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
721 | ||
722 | if (ptid_equal (inferior_ptid, null_ptid)) | |
723 | { | |
724 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 725 | ourstatus->value.sig = GDB_SIGNAL_0; |
61bb466e KW |
726 | exit_signo = 0; |
727 | return null_ptid; | |
728 | } | |
729 | ||
730 | sigemptyset (&set); | |
731 | sigaddset (&set, SIGUSR1); | |
732 | ||
733 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
734 | while (!(status.flags & _DEBUG_FLAG_ISTOP)) | |
735 | { | |
736 | ofunc = (void (*)()) signal (SIGINT, nto_interrupt); | |
737 | sigwaitinfo (&set, &info); | |
738 | signal (SIGINT, ofunc); | |
739 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
740 | } | |
741 | ||
742 | if (status.flags & _DEBUG_FLAG_SSTEP) | |
743 | { | |
744 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 745 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
746 | } |
747 | /* Was it a breakpoint? */ | |
748 | else if (status.flags & _DEBUG_FLAG_TRACE) | |
749 | { | |
750 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 751 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
752 | } |
753 | else if (status.flags & _DEBUG_FLAG_ISTOP) | |
754 | { | |
755 | switch (status.why) | |
756 | { | |
757 | case _DEBUG_WHY_SIGNALLED: | |
758 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
759 | ourstatus->value.sig = | |
2ea28649 | 760 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
761 | exit_signo = 0; |
762 | break; | |
763 | case _DEBUG_WHY_FAULTED: | |
764 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
765 | if (status.info.si_signo == SIGTRAP) | |
766 | { | |
767 | ourstatus->value.sig = 0; | |
768 | exit_signo = 0; | |
769 | } | |
770 | else | |
771 | { | |
772 | ourstatus->value.sig = | |
2ea28649 | 773 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
774 | exit_signo = ourstatus->value.sig; |
775 | } | |
776 | break; | |
777 | ||
778 | case _DEBUG_WHY_TERMINATED: | |
779 | { | |
780 | int waitval = 0; | |
781 | ||
dfd4cc63 | 782 | waitpid (ptid_get_pid (inferior_ptid), &waitval, WNOHANG); |
61bb466e KW |
783 | if (exit_signo) |
784 | { | |
785 | /* Abnormal death. */ | |
786 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
787 | ourstatus->value.sig = exit_signo; | |
788 | } | |
789 | else | |
790 | { | |
791 | /* Normal death. */ | |
792 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
793 | ourstatus->value.integer = WEXITSTATUS (waitval); | |
794 | } | |
795 | exit_signo = 0; | |
796 | break; | |
797 | } | |
798 | ||
799 | case _DEBUG_WHY_REQUESTED: | |
800 | /* We are assuming a requested stop is due to a SIGINT. */ | |
801 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 802 | ourstatus->value.sig = GDB_SIGNAL_INT; |
61bb466e KW |
803 | exit_signo = 0; |
804 | break; | |
805 | } | |
806 | } | |
807 | ||
a6a7f2a5 | 808 | return ptid_build (status.pid, 0, status.tid); |
61bb466e KW |
809 | } |
810 | ||
811 | /* Read the current values of the inferior's registers, both the | |
812 | general register set and floating point registers (if supported) | |
813 | and update gdb's idea of their current values. */ | |
814 | static void | |
28439f5e PA |
815 | procfs_fetch_registers (struct target_ops *ops, |
816 | struct regcache *regcache, int regno) | |
61bb466e KW |
817 | { |
818 | union | |
819 | { | |
820 | procfs_greg greg; | |
821 | procfs_fpreg fpreg; | |
822 | procfs_altreg altreg; | |
823 | } | |
824 | reg; | |
825 | int regsize; | |
826 | ||
827 | procfs_set_thread (inferior_ptid); | |
828 | if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK) | |
56be3814 | 829 | nto_supply_gregset (regcache, (char *) ®.greg); |
61bb466e KW |
830 | if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size) |
831 | == EOK) | |
56be3814 | 832 | nto_supply_fpregset (regcache, (char *) ®.fpreg); |
61bb466e KW |
833 | if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size) |
834 | == EOK) | |
56be3814 | 835 | nto_supply_altregset (regcache, (char *) ®.altreg); |
61bb466e KW |
836 | } |
837 | ||
9d46c4e5 PA |
838 | /* Helper for procfs_xfer_partial that handles memory transfers. |
839 | Arguments are like target_xfer_partial. */ | |
61bb466e | 840 | |
9d46c4e5 PA |
841 | static enum target_xfer_status |
842 | procfs_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, | |
843 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
61bb466e | 844 | { |
9d46c4e5 PA |
845 | int nbytes; |
846 | ||
847 | if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) != (off_t) memaddr) | |
848 | return TARGET_XFER_E_IO; | |
849 | ||
850 | if (writebuf != NULL) | |
851 | nbytes = write (ctl_fd, writebuf, len); | |
852 | else | |
853 | nbytes = read (ctl_fd, readbuf, len); | |
854 | if (nbytes <= 0) | |
855 | return TARGET_XFER_E_IO; | |
856 | *xfered_len = nbytes; | |
857 | return TARGET_XFER_OK; | |
858 | } | |
859 | ||
860 | /* Target to_xfer_partial implementation. */ | |
61bb466e | 861 | |
9d46c4e5 PA |
862 | static enum target_xfer_status |
863 | procfs_xfer_partial (struct target_ops *ops, enum target_object object, | |
864 | const char *annex, gdb_byte *readbuf, | |
865 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
866 | ULONGEST *xfered_len) | |
867 | { | |
868 | switch (object) | |
61bb466e | 869 | { |
9d46c4e5 PA |
870 | case TARGET_OBJECT_MEMORY: |
871 | return procfs_xfer_memory (readbuf, writebuf, offset, len, xfered_len); | |
872 | default: | |
873 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
874 | readbuf, writebuf, offset, len); | |
61bb466e | 875 | } |
61bb466e KW |
876 | } |
877 | ||
878 | /* Take a program previously attached to and detaches it. | |
879 | The program resumes execution and will no longer stop | |
880 | on signals, etc. We'd better not have left any breakpoints | |
881 | in the program or it'll die when it hits one. */ | |
882 | static void | |
52554a0e | 883 | procfs_detach (struct target_ops *ops, const char *args, int from_tty) |
61bb466e KW |
884 | { |
885 | int siggnal = 0; | |
7f9f62ba | 886 | int pid; |
61bb466e KW |
887 | |
888 | if (from_tty) | |
889 | { | |
890 | char *exec_file = get_exec_file (0); | |
891 | if (exec_file == 0) | |
892 | exec_file = ""; | |
893 | printf_unfiltered ("Detaching from program: %s %s\n", | |
894 | exec_file, target_pid_to_str (inferior_ptid)); | |
895 | gdb_flush (gdb_stdout); | |
896 | } | |
897 | if (args) | |
898 | siggnal = atoi (args); | |
899 | ||
900 | if (siggnal) | |
dfd4cc63 | 901 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, siggnal, 0, 0); |
61bb466e KW |
902 | |
903 | close (ctl_fd); | |
904 | ctl_fd = -1; | |
7f9f62ba PA |
905 | |
906 | pid = ptid_get_pid (inferior_ptid); | |
61bb466e | 907 | inferior_ptid = null_ptid; |
7f9f62ba PA |
908 | detach_inferior (pid); |
909 | init_thread_list (); | |
6a3cb8e8 | 910 | inf_child_maybe_unpush_target (ops); |
61bb466e KW |
911 | } |
912 | ||
913 | static int | |
914 | procfs_breakpoint (CORE_ADDR addr, int type, int size) | |
915 | { | |
916 | procfs_break brk; | |
917 | ||
918 | brk.type = type; | |
919 | brk.addr = addr; | |
920 | brk.size = size; | |
921 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
922 | if (errno != EOK) | |
923 | return 1; | |
924 | return 0; | |
925 | } | |
926 | ||
927 | static int | |
3db08215 | 928 | procfs_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 929 | struct bp_target_info *bp_tgt) |
61bb466e | 930 | { |
0d5ed153 | 931 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f | 932 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, 0); |
61bb466e KW |
933 | } |
934 | ||
935 | static int | |
3db08215 | 936 | procfs_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 937 | struct bp_target_info *bp_tgt) |
61bb466e | 938 | { |
8181d85f | 939 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, -1); |
61bb466e KW |
940 | } |
941 | ||
942 | static int | |
23a26771 | 943 | procfs_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 944 | struct bp_target_info *bp_tgt) |
61bb466e | 945 | { |
0d5ed153 | 946 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f DJ |
947 | return procfs_breakpoint (bp_tgt->placed_address, |
948 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0); | |
61bb466e KW |
949 | } |
950 | ||
951 | static int | |
8476dc92 TT |
952 | procfs_remove_hw_breakpoint (struct target_ops *self, |
953 | struct gdbarch *gdbarch, | |
a6d9a66e | 954 | struct bp_target_info *bp_tgt) |
61bb466e | 955 | { |
8181d85f DJ |
956 | return procfs_breakpoint (bp_tgt->placed_address, |
957 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1); | |
61bb466e KW |
958 | } |
959 | ||
960 | static void | |
28439f5e | 961 | procfs_resume (struct target_ops *ops, |
2ea28649 | 962 | ptid_t ptid, int step, enum gdb_signal signo) |
61bb466e KW |
963 | { |
964 | int signal_to_pass; | |
965 | procfs_status status; | |
14ef7606 | 966 | sigset_t *run_fault = (sigset_t *) (void *) &run.fault; |
61bb466e KW |
967 | |
968 | if (ptid_equal (inferior_ptid, null_ptid)) | |
969 | return; | |
970 | ||
971 | procfs_set_thread (ptid_equal (ptid, minus_one_ptid) ? inferior_ptid : | |
972 | ptid); | |
973 | ||
974 | run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE; | |
975 | if (step) | |
976 | run.flags |= _DEBUG_RUN_STEP; | |
977 | ||
14ef7606 AR |
978 | sigemptyset (run_fault); |
979 | sigaddset (run_fault, FLTBPT); | |
980 | sigaddset (run_fault, FLTTRACE); | |
981 | sigaddset (run_fault, FLTILL); | |
982 | sigaddset (run_fault, FLTPRIV); | |
983 | sigaddset (run_fault, FLTBOUNDS); | |
984 | sigaddset (run_fault, FLTIOVF); | |
985 | sigaddset (run_fault, FLTIZDIV); | |
986 | sigaddset (run_fault, FLTFPE); | |
61bb466e | 987 | /* Peter V will be changing this at some point. */ |
14ef7606 | 988 | sigaddset (run_fault, FLTPAGE); |
61bb466e KW |
989 | |
990 | run.flags |= _DEBUG_RUN_ARM; | |
991 | ||
2ea28649 | 992 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
993 | |
994 | if (signal_to_pass) | |
995 | { | |
996 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
2ea28649 | 997 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
998 | if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED)) |
999 | { | |
1000 | if (signal_to_pass != status.info.si_signo) | |
1001 | { | |
dfd4cc63 | 1002 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, |
d737fd7f | 1003 | signal_to_pass, 0, 0); |
61bb466e KW |
1004 | run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG; |
1005 | } | |
0df8b418 | 1006 | else /* Let it kill the program without telling us. */ |
61bb466e KW |
1007 | sigdelset (&run.trace, signal_to_pass); |
1008 | } | |
1009 | } | |
1010 | else | |
1011 | run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT; | |
1012 | ||
1013 | errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0); | |
1014 | if (errno != EOK) | |
1015 | { | |
9b20d036 | 1016 | perror (_("run error!\n")); |
61bb466e KW |
1017 | return; |
1018 | } | |
1019 | } | |
1020 | ||
1021 | static void | |
136d6dae | 1022 | procfs_mourn_inferior (struct target_ops *ops) |
61bb466e KW |
1023 | { |
1024 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
1025 | { | |
dfd4cc63 | 1026 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, SIGKILL, 0, 0); |
61bb466e KW |
1027 | close (ctl_fd); |
1028 | } | |
1029 | inferior_ptid = null_ptid; | |
1030 | init_thread_list (); | |
c1ee2fb3 | 1031 | inf_child_mourn_inferior (ops); |
61bb466e KW |
1032 | } |
1033 | ||
1034 | /* This function breaks up an argument string into an argument | |
1035 | vector suitable for passing to execvp(). | |
1036 | E.g., on "run a b c d" this routine would get as input | |
1037 | the string "a b c d", and as output it would fill in argv with | |
1038 | the four arguments "a", "b", "c", "d". The only additional | |
1039 | functionality is simple quoting. The gdb command: | |
1040 | run a "b c d" f | |
1041 | will fill in argv with the three args "a", "b c d", "e". */ | |
1042 | static void | |
1043 | breakup_args (char *scratch, char **argv) | |
1044 | { | |
1045 | char *pp, *cp = scratch; | |
1046 | char quoting = 0; | |
1047 | ||
1048 | for (;;) | |
1049 | { | |
1050 | /* Scan past leading separators. */ | |
1051 | quoting = 0; | |
1052 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') | |
1053 | cp++; | |
1054 | ||
1055 | /* Break if at end of string. */ | |
1056 | if (*cp == '\0') | |
1057 | break; | |
1058 | ||
1059 | /* Take an arg. */ | |
1060 | if (*cp == '"') | |
1061 | { | |
1062 | cp++; | |
1063 | quoting = strchr (cp, '"') ? 1 : 0; | |
1064 | } | |
1065 | ||
1066 | *argv++ = cp; | |
1067 | ||
1068 | /* Scan for next arg separator. */ | |
1069 | pp = cp; | |
1070 | if (quoting) | |
1071 | cp = strchr (pp, '"'); | |
1072 | if ((cp == NULL) || (!quoting)) | |
1073 | cp = strchr (pp, ' '); | |
1074 | if (cp == NULL) | |
1075 | cp = strchr (pp, '\t'); | |
1076 | if (cp == NULL) | |
1077 | cp = strchr (pp, '\n'); | |
1078 | ||
1079 | /* No separators => end of string => break. */ | |
1080 | if (cp == NULL) | |
1081 | { | |
1082 | pp = cp; | |
1083 | break; | |
1084 | } | |
1085 | ||
1086 | /* Replace the separator with a terminator. */ | |
1087 | *cp++ = '\0'; | |
1088 | } | |
1089 | ||
1090 | /* Execv requires a null-terminated arg vector. */ | |
1091 | *argv = NULL; | |
1092 | } | |
1093 | ||
1094 | static void | |
136d6dae VP |
1095 | procfs_create_inferior (struct target_ops *ops, char *exec_file, |
1096 | char *allargs, char **env, int from_tty) | |
61bb466e KW |
1097 | { |
1098 | struct inheritance inherit; | |
1099 | pid_t pid; | |
1100 | int flags, errn; | |
1101 | char **argv, *args; | |
3cb3b8df | 1102 | const char *in = "", *out = "", *err = ""; |
61bb466e KW |
1103 | int fd, fds[3]; |
1104 | sigset_t set; | |
3cb3b8df | 1105 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
3fdfcbf1 | 1106 | struct inferior *inf; |
61bb466e KW |
1107 | |
1108 | argv = xmalloc (((strlen (allargs) + 1) / (unsigned) 2 + 2) * | |
1109 | sizeof (*argv)); | |
1110 | argv[0] = get_exec_file (1); | |
1111 | if (!argv[0]) | |
1112 | { | |
1113 | if (exec_file) | |
1114 | argv[0] = exec_file; | |
1115 | else | |
1116 | return; | |
1117 | } | |
1118 | ||
1119 | args = xstrdup (allargs); | |
1120 | breakup_args (args, exec_file ? &argv[1] : &argv[0]); | |
1121 | ||
1122 | argv = nto_parse_redirection (argv, &in, &out, &err); | |
1123 | ||
1124 | fds[0] = STDIN_FILENO; | |
1125 | fds[1] = STDOUT_FILENO; | |
1126 | fds[2] = STDERR_FILENO; | |
1127 | ||
1128 | /* If the user specified I/O via gdb's --tty= arg, use it, but only | |
1129 | if the i/o is not also being specified via redirection. */ | |
1130 | if (inferior_io_terminal) | |
1131 | { | |
1132 | if (!in[0]) | |
1133 | in = inferior_io_terminal; | |
1134 | if (!out[0]) | |
1135 | out = inferior_io_terminal; | |
1136 | if (!err[0]) | |
1137 | err = inferior_io_terminal; | |
1138 | } | |
1139 | ||
1140 | if (in[0]) | |
1141 | { | |
1142 | fd = open (in, O_RDONLY); | |
1143 | if (fd == -1) | |
1144 | perror (in); | |
1145 | else | |
1146 | fds[0] = fd; | |
1147 | } | |
1148 | if (out[0]) | |
1149 | { | |
1150 | fd = open (out, O_WRONLY); | |
1151 | if (fd == -1) | |
1152 | perror (out); | |
1153 | else | |
1154 | fds[1] = fd; | |
1155 | } | |
1156 | if (err[0]) | |
1157 | { | |
1158 | fd = open (err, O_WRONLY); | |
1159 | if (fd == -1) | |
1160 | perror (err); | |
1161 | else | |
1162 | fds[2] = fd; | |
1163 | } | |
1164 | ||
1165 | /* Clear any pending SIGUSR1's but keep the behavior the same. */ | |
1166 | signal (SIGUSR1, signal (SIGUSR1, SIG_IGN)); | |
1167 | ||
1168 | sigemptyset (&set); | |
1169 | sigaddset (&set, SIGUSR1); | |
1170 | sigprocmask (SIG_UNBLOCK, &set, NULL); | |
1171 | ||
1172 | memset (&inherit, 0, sizeof (inherit)); | |
1173 | ||
1174 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0) | |
1175 | { | |
d737fd7f | 1176 | inherit.nd = nto_node (); |
61bb466e KW |
1177 | inherit.flags |= SPAWN_SETND; |
1178 | inherit.flags &= ~SPAWN_EXEC; | |
1179 | } | |
1180 | inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD; | |
1181 | inherit.pgroup = SPAWN_NEWPGROUP; | |
1182 | pid = spawnp (argv[0], 3, fds, &inherit, argv, | |
1183 | ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0); | |
1184 | xfree (args); | |
1185 | ||
1186 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1187 | ||
1188 | if (pid == -1) | |
8a3fe4f8 | 1189 | error (_("Error spawning %s: %d (%s)"), argv[0], errno, |
d737fd7f | 1190 | safe_strerror (errno)); |
61bb466e KW |
1191 | |
1192 | if (fds[0] != STDIN_FILENO) | |
1193 | close (fds[0]); | |
1194 | if (fds[1] != STDOUT_FILENO) | |
1195 | close (fds[1]); | |
1196 | if (fds[2] != STDERR_FILENO) | |
1197 | close (fds[2]); | |
1198 | ||
1199 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
e8032dde | 1200 | procfs_update_thread_list (ops); |
61bb466e | 1201 | |
6c95b8df PA |
1202 | inf = current_inferior (); |
1203 | inferior_appeared (inf, pid); | |
3fdfcbf1 | 1204 | inf->attach_flag = 0; |
7f9f62ba | 1205 | |
61bb466e KW |
1206 | flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */ |
1207 | errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0); | |
1208 | if (errn != EOK) | |
1209 | { | |
1210 | /* FIXME: expected warning? */ | |
1211 | /* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n", | |
1212 | errn, strerror(errn) ); */ | |
1213 | } | |
6a3cb8e8 PA |
1214 | if (!target_is_pushed (ops)) |
1215 | push_target (ops); | |
61bb466e KW |
1216 | target_terminal_init (); |
1217 | ||
61bb466e KW |
1218 | if (exec_bfd != NULL |
1219 | || (symfile_objfile != NULL && symfile_objfile->obfd != NULL)) | |
268a4a75 | 1220 | solib_create_inferior_hook (0); |
61bb466e KW |
1221 | } |
1222 | ||
1223 | static void | |
1eab8a48 | 1224 | procfs_stop (struct target_ops *self, ptid_t ptid) |
61bb466e KW |
1225 | { |
1226 | devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0); | |
1227 | } | |
1228 | ||
1229 | static void | |
7d85a9c0 | 1230 | procfs_kill_inferior (struct target_ops *ops) |
61bb466e KW |
1231 | { |
1232 | target_mourn_inferior (); | |
1233 | } | |
1234 | ||
61bb466e KW |
1235 | /* Fill buf with regset and return devctl cmd to do the setting. Return |
1236 | -1 if we fail to get the regset. Store size of regset in regsize. */ | |
1237 | static int | |
1238 | get_regset (int regset, char *buf, int bufsize, int *regsize) | |
1239 | { | |
1240 | int dev_get, dev_set; | |
1241 | switch (regset) | |
1242 | { | |
1243 | case NTO_REG_GENERAL: | |
1244 | dev_get = DCMD_PROC_GETGREG; | |
1245 | dev_set = DCMD_PROC_SETGREG; | |
1246 | break; | |
1247 | ||
1248 | case NTO_REG_FLOAT: | |
1249 | dev_get = DCMD_PROC_GETFPREG; | |
1250 | dev_set = DCMD_PROC_SETFPREG; | |
1251 | break; | |
1252 | ||
1253 | case NTO_REG_ALT: | |
1254 | dev_get = DCMD_PROC_GETALTREG; | |
1255 | dev_set = DCMD_PROC_SETALTREG; | |
1256 | break; | |
1257 | ||
1258 | case NTO_REG_SYSTEM: | |
1259 | default: | |
1260 | return -1; | |
1261 | } | |
97c44116 | 1262 | if (devctl (ctl_fd, dev_get, buf, bufsize, regsize) != EOK) |
61bb466e KW |
1263 | return -1; |
1264 | ||
1265 | return dev_set; | |
1266 | } | |
1267 | ||
1268 | void | |
28439f5e PA |
1269 | procfs_store_registers (struct target_ops *ops, |
1270 | struct regcache *regcache, int regno) | |
61bb466e KW |
1271 | { |
1272 | union | |
1273 | { | |
1274 | procfs_greg greg; | |
1275 | procfs_fpreg fpreg; | |
1276 | procfs_altreg altreg; | |
1277 | } | |
1278 | reg; | |
1279 | unsigned off; | |
1280 | int len, regset, regsize, dev_set, err; | |
1281 | char *data; | |
1282 | ||
1283 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1284 | return; | |
1285 | procfs_set_thread (inferior_ptid); | |
1286 | ||
1287 | if (regno == -1) | |
1288 | { | |
1289 | for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++) | |
1290 | { | |
1291 | dev_set = get_regset (regset, (char *) ®, | |
1292 | sizeof (reg), ®size); | |
1293 | if (dev_set == -1) | |
1294 | continue; | |
1295 | ||
56be3814 | 1296 | if (nto_regset_fill (regcache, regset, (char *) ®) == -1) |
61bb466e KW |
1297 | continue; |
1298 | ||
1299 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1300 | if (err != EOK) | |
1301 | fprintf_unfiltered (gdb_stderr, | |
1302 | "Warning unable to write regset %d: %s\n", | |
dc5dd1eb | 1303 | regno, safe_strerror (err)); |
61bb466e KW |
1304 | } |
1305 | } | |
1306 | else | |
1307 | { | |
1308 | regset = nto_regset_id (regno); | |
1309 | if (regset == -1) | |
1310 | return; | |
1311 | ||
1312 | dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size); | |
1313 | if (dev_set == -1) | |
1314 | return; | |
1315 | ||
60441ab9 UW |
1316 | len = nto_register_area (get_regcache_arch (regcache), |
1317 | regno, regset, &off); | |
61bb466e KW |
1318 | |
1319 | if (len < 1) | |
1320 | return; | |
1321 | ||
56be3814 | 1322 | regcache_raw_collect (regcache, regno, (char *) ® + off); |
61bb466e KW |
1323 | |
1324 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1325 | if (err != EOK) | |
1326 | fprintf_unfiltered (gdb_stderr, | |
1327 | "Warning unable to write regset %d: %s\n", regno, | |
dc5dd1eb | 1328 | safe_strerror (err)); |
61bb466e KW |
1329 | } |
1330 | } | |
1331 | ||
2455069d UW |
1332 | /* Set list of signals to be handled in the target. */ |
1333 | ||
61bb466e | 1334 | static void |
94bedb42 TT |
1335 | procfs_pass_signals (struct target_ops *self, |
1336 | int numsigs, unsigned char *pass_signals) | |
61bb466e KW |
1337 | { |
1338 | int signo; | |
1339 | ||
2455069d UW |
1340 | sigfillset (&run.trace); |
1341 | ||
61bb466e KW |
1342 | for (signo = 1; signo < NSIG; signo++) |
1343 | { | |
2ea28649 | 1344 | int target_signo = gdb_signal_from_host (signo); |
2455069d UW |
1345 | if (target_signo < numsigs && pass_signals[target_signo]) |
1346 | sigdelset (&run.trace, signo); | |
61bb466e KW |
1347 | } |
1348 | } | |
1349 | ||
61bb466e KW |
1350 | static struct tidinfo * |
1351 | procfs_thread_info (pid_t pid, short tid) | |
1352 | { | |
1353 | /* NYI */ | |
1354 | return NULL; | |
1355 | } | |
1356 | ||
94c74239 | 1357 | static char * |
117de6a9 | 1358 | procfs_pid_to_str (struct target_ops *ops, ptid_t ptid) |
61bb466e KW |
1359 | { |
1360 | static char buf[1024]; | |
1361 | int pid, tid, n; | |
1362 | struct tidinfo *tip; | |
1363 | ||
1364 | pid = ptid_get_pid (ptid); | |
1365 | tid = ptid_get_tid (ptid); | |
1366 | ||
dc5dd1eb | 1367 | n = snprintf (buf, 1023, "process %d", pid); |
61bb466e KW |
1368 | |
1369 | #if 0 /* NYI */ | |
1370 | tip = procfs_thread_info (pid, tid); | |
1371 | if (tip != NULL) | |
dc5dd1eb | 1372 | snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state); |
61bb466e KW |
1373 | #endif |
1374 | ||
1375 | return buf; | |
1376 | } | |
1377 | ||
132f8e03 PA |
1378 | /* to_can_run implementation for "target procfs". Note this really |
1379 | means "can this target be the default run target", which there can | |
1380 | be only one, and we make it be "target native" like other ports. | |
1381 | "target procfs <node>" wouldn't make sense as default run target, as | |
1382 | it needs <node>. */ | |
ee8e9165 | 1383 | |
132f8e03 PA |
1384 | static int |
1385 | procfs_can_run (struct target_ops *self) | |
1386 | { | |
1387 | return 0; | |
1388 | } | |
1389 | ||
1390 | /* "target procfs". */ | |
1391 | static struct target_ops nto_procfs_ops; | |
1392 | ||
6a3cb8e8 PA |
1393 | /* "target native". */ |
1394 | static struct target_ops *nto_native_ops; | |
1395 | ||
1396 | /* to_open implementation for "target procfs". */ | |
1397 | ||
1398 | static void | |
014f9477 | 1399 | procfs_open (const char *arg, int from_tty) |
6a3cb8e8 PA |
1400 | { |
1401 | procfs_open_1 (&nto_procfs_ops, arg, from_tty); | |
1402 | } | |
1403 | ||
1404 | /* to_open implementation for "target native". */ | |
1405 | ||
1406 | static void | |
014f9477 | 1407 | procfs_native_open (const char *arg, int from_tty) |
6a3cb8e8 PA |
1408 | { |
1409 | procfs_open_1 (nto_native_ops, arg, from_tty); | |
1410 | } | |
1411 | ||
132f8e03 PA |
1412 | /* Create the "native" and "procfs" targets. */ |
1413 | ||
1414 | static void | |
1415 | init_procfs_targets (void) | |
61bb466e | 1416 | { |
ee8e9165 PA |
1417 | struct target_ops *t = inf_child_target (); |
1418 | ||
132f8e03 PA |
1419 | /* Leave to_shortname as "native". */ |
1420 | t->to_longname = "QNX Neutrino local process"; | |
1421 | t->to_doc = "QNX Neutrino local process (started by the \"run\" command)."; | |
6a3cb8e8 | 1422 | t->to_open = procfs_native_open; |
ee8e9165 PA |
1423 | t->to_attach = procfs_attach; |
1424 | t->to_post_attach = procfs_post_attach; | |
1425 | t->to_detach = procfs_detach; | |
1426 | t->to_resume = procfs_resume; | |
1427 | t->to_wait = procfs_wait; | |
1428 | t->to_fetch_registers = procfs_fetch_registers; | |
1429 | t->to_store_registers = procfs_store_registers; | |
1430 | t->to_xfer_partial = procfs_xfer_partial; | |
1431 | t->to_files_info = procfs_files_info; | |
1432 | t->to_insert_breakpoint = procfs_insert_breakpoint; | |
1433 | t->to_remove_breakpoint = procfs_remove_breakpoint; | |
1434 | t->to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint; | |
1435 | t->to_insert_hw_breakpoint = procfs_insert_hw_breakpoint; | |
1436 | t->to_remove_hw_breakpoint = procfs_remove_hw_breakpoint; | |
1437 | t->to_insert_watchpoint = procfs_insert_hw_watchpoint; | |
1438 | t->to_remove_watchpoint = procfs_remove_hw_watchpoint; | |
1439 | t->to_stopped_by_watchpoint = procfs_stopped_by_watchpoint; | |
1440 | t->to_kill = procfs_kill_inferior; | |
1441 | t->to_create_inferior = procfs_create_inferior; | |
1442 | t->to_mourn_inferior = procfs_mourn_inferior; | |
1443 | t->to_pass_signals = procfs_pass_signals; | |
1444 | t->to_thread_alive = procfs_thread_alive; | |
e8032dde | 1445 | t->to_update_thread_list = procfs_update_thread_list; |
ee8e9165 PA |
1446 | t->to_pid_to_str = procfs_pid_to_str; |
1447 | t->to_stop = procfs_stop; | |
1448 | t->to_have_continuable_watchpoint = 1; | |
1449 | t->to_extra_thread_info = nto_extra_thread_info; | |
1450 | ||
6a3cb8e8 PA |
1451 | nto_native_ops = t; |
1452 | ||
132f8e03 PA |
1453 | /* Register "target native". This is the default run target. */ |
1454 | add_target (t); | |
1455 | ||
1456 | /* Register "target procfs <node>". */ | |
1457 | nto_procfs_ops = *t; | |
1458 | nto_procfs_ops.to_shortname = "procfs"; | |
1459 | nto_procfs_ops.to_can_run = procfs_can_run; | |
1460 | t->to_longname = "QNX Neutrino local or remote process"; | |
1461 | t->to_doc = "QNX Neutrino process. target procfs <node>"; | |
6a3cb8e8 PA |
1462 | t->to_open = procfs_open; |
1463 | ||
132f8e03 | 1464 | add_target (&nto_procfs_ops); |
61bb466e KW |
1465 | } |
1466 | ||
1467 | #define OSTYPE_NTO 1 | |
1468 | ||
1469 | void | |
dc5dd1eb | 1470 | _initialize_procfs (void) |
61bb466e KW |
1471 | { |
1472 | sigset_t set; | |
1473 | ||
132f8e03 | 1474 | init_procfs_targets (); |
61bb466e KW |
1475 | |
1476 | /* We use SIGUSR1 to gain control after we block waiting for a process. | |
1477 | We use sigwaitevent to wait. */ | |
1478 | sigemptyset (&set); | |
1479 | sigaddset (&set, SIGUSR1); | |
1480 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1481 | ||
2455069d UW |
1482 | /* Initially, make sure all signals are reported. */ |
1483 | sigfillset (&run.trace); | |
61bb466e KW |
1484 | |
1485 | /* Stuff some information. */ | |
1486 | nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags; | |
1487 | nto_cpuinfo_valid = 1; | |
1488 | ||
1bedd215 AC |
1489 | add_info ("pidlist", procfs_pidlist, _("pidlist")); |
1490 | add_info ("meminfo", procfs_meminfo, _("memory information")); | |
d737fd7f KW |
1491 | |
1492 | nto_is_nto_target = procfs_is_nto_target; | |
61bb466e KW |
1493 | } |
1494 | ||
1495 | ||
1496 | static int | |
1497 | procfs_hw_watchpoint (int addr, int len, int type) | |
1498 | { | |
1499 | procfs_break brk; | |
1500 | ||
1501 | switch (type) | |
1502 | { | |
1503 | case 1: /* Read. */ | |
1504 | brk.type = _DEBUG_BREAK_RD; | |
1505 | break; | |
1506 | case 2: /* Read/Write. */ | |
1507 | brk.type = _DEBUG_BREAK_RW; | |
1508 | break; | |
1509 | default: /* Modify. */ | |
1510 | /* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */ | |
1511 | brk.type = _DEBUG_BREAK_RW; | |
1512 | } | |
1513 | brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */ | |
1514 | brk.addr = addr; | |
1515 | brk.size = len; | |
1516 | ||
1517 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1518 | if (errno != EOK) | |
1519 | { | |
9b20d036 | 1520 | perror (_("Failed to set hardware watchpoint")); |
61bb466e KW |
1521 | return -1; |
1522 | } | |
1523 | return 0; | |
1524 | } | |
1525 | ||
1526 | static int | |
5461485a TT |
1527 | procfs_can_use_hw_breakpoint (struct target_ops *self, |
1528 | int type, int cnt, int othertype) | |
61bb466e KW |
1529 | { |
1530 | return 1; | |
1531 | } | |
1532 | ||
1533 | static int | |
11b5219a TT |
1534 | procfs_remove_hw_watchpoint (struct target_ops *self, |
1535 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 1536 | struct expression *cond) |
61bb466e KW |
1537 | { |
1538 | return procfs_hw_watchpoint (addr, -1, type); | |
1539 | } | |
1540 | ||
1541 | static int | |
7bb99c53 TT |
1542 | procfs_insert_hw_watchpoint (struct target_ops *self, |
1543 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 1544 | struct expression *cond) |
61bb466e KW |
1545 | { |
1546 | return procfs_hw_watchpoint (addr, len, type); | |
1547 | } | |
1548 | ||
1549 | static int | |
6a109b6b | 1550 | procfs_stopped_by_watchpoint (struct target_ops *ops) |
61bb466e KW |
1551 | { |
1552 | return 0; | |
1553 | } |