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 | |
ecd75fc8 | 4 | Copyright (C) 2003-2014 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 |
28439f5e | 310 | procfs_find_new_threads (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 | ||
321 | pid = ptid_get_pid (inferior_ptid); | |
322 | ||
745a434e AR |
323 | status.tid = 1; |
324 | ||
325 | for (tid = 1;; ++tid) | |
61bb466e | 326 | { |
745a434e AR |
327 | if (status.tid == tid |
328 | && (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0) | |
329 | != EOK)) | |
61bb466e | 330 | break; |
745a434e AR |
331 | if (status.tid != tid) |
332 | /* The reason why this would not be equal is that devctl might have | |
333 | returned different tid, meaning the requested tid no longer exists | |
334 | (e.g. thread exited). */ | |
335 | continue; | |
336 | ptid = ptid_build (pid, 0, tid); | |
337 | new_thread = find_thread_ptid (ptid); | |
338 | if (!new_thread) | |
339 | new_thread = add_thread (ptid); | |
340 | update_thread_private_data (new_thread, tid, status.state, 0); | |
341 | status.tid++; | |
61bb466e KW |
342 | } |
343 | return; | |
344 | } | |
345 | ||
9fe4a216 TT |
346 | static void |
347 | do_closedir_cleanup (void *dir) | |
348 | { | |
349 | closedir (dir); | |
350 | } | |
351 | ||
61bb466e KW |
352 | void |
353 | procfs_pidlist (char *args, int from_tty) | |
354 | { | |
355 | DIR *dp = NULL; | |
356 | struct dirent *dirp = NULL; | |
61bb466e KW |
357 | char buf[512]; |
358 | procfs_info *pidinfo = NULL; | |
359 | procfs_debuginfo *info = NULL; | |
360 | procfs_status *status = NULL; | |
361 | pid_t num_threads = 0; | |
362 | pid_t pid; | |
363 | char name[512]; | |
9fe4a216 | 364 | struct cleanup *cleanups; |
61bb466e KW |
365 | |
366 | dp = opendir (nto_procfs_path); | |
367 | if (dp == NULL) | |
368 | { | |
dc5dd1eb | 369 | fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)", |
d737fd7f | 370 | nto_procfs_path, errno, safe_strerror (errno)); |
61bb466e KW |
371 | return; |
372 | } | |
373 | ||
9fe4a216 TT |
374 | cleanups = make_cleanup (do_closedir_cleanup, dp); |
375 | ||
61bb466e KW |
376 | /* Start scan at first pid. */ |
377 | rewinddir (dp); | |
378 | ||
379 | do | |
380 | { | |
9fe4a216 TT |
381 | int fd; |
382 | struct cleanup *inner_cleanup; | |
383 | ||
61bb466e KW |
384 | /* Get the right pid and procfs path for the pid. */ |
385 | do | |
386 | { | |
387 | dirp = readdir (dp); | |
388 | if (dirp == NULL) | |
389 | { | |
9fe4a216 | 390 | do_cleanups (cleanups); |
61bb466e KW |
391 | return; |
392 | } | |
dc5dd1eb | 393 | snprintf (buf, 511, "%s/%s/as", nto_procfs_path, dirp->d_name); |
61bb466e KW |
394 | pid = atoi (dirp->d_name); |
395 | } | |
396 | while (pid == 0); | |
397 | ||
0df8b418 | 398 | /* Open the procfs path. */ |
61bb466e KW |
399 | fd = open (buf, O_RDONLY); |
400 | if (fd == -1) | |
401 | { | |
dc5dd1eb | 402 | fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n", |
d737fd7f | 403 | buf, errno, safe_strerror (errno)); |
9fe4a216 | 404 | do_cleanups (cleanups); |
61bb466e KW |
405 | return; |
406 | } | |
9fe4a216 | 407 | inner_cleanup = make_cleanup_close (fd); |
61bb466e KW |
408 | |
409 | pidinfo = (procfs_info *) buf; | |
410 | if (devctl (fd, DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK) | |
411 | { | |
dc5dd1eb | 412 | fprintf_unfiltered (gdb_stderr, |
d737fd7f KW |
413 | "devctl DCMD_PROC_INFO failed - %d (%s)\n", |
414 | errno, safe_strerror (errno)); | |
61bb466e KW |
415 | break; |
416 | } | |
417 | num_threads = pidinfo->num_threads; | |
418 | ||
419 | info = (procfs_debuginfo *) buf; | |
420 | if (devctl (fd, DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0) != EOK) | |
421 | strcpy (name, "unavailable"); | |
422 | else | |
423 | strcpy (name, info->path); | |
424 | ||
425 | /* Collect state info on all the threads. */ | |
426 | status = (procfs_status *) buf; | |
427 | for (status->tid = 1; status->tid <= num_threads; status->tid++) | |
428 | { | |
429 | if (devctl (fd, DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0) != EOK | |
430 | && status->tid != 0) | |
431 | break; | |
432 | if (status->tid != 0) | |
433 | printf_filtered ("%s - %d/%d\n", name, pid, status->tid); | |
434 | } | |
9fe4a216 TT |
435 | |
436 | do_cleanups (inner_cleanup); | |
61bb466e KW |
437 | } |
438 | while (dirp != NULL); | |
439 | ||
9fe4a216 | 440 | do_cleanups (cleanups); |
61bb466e KW |
441 | return; |
442 | } | |
443 | ||
444 | void | |
445 | procfs_meminfo (char *args, int from_tty) | |
446 | { | |
447 | procfs_mapinfo *mapinfos = NULL; | |
448 | static int num_mapinfos = 0; | |
449 | procfs_mapinfo *mapinfo_p, *mapinfo_p2; | |
450 | int flags = ~0, err, num, i, j; | |
451 | ||
452 | struct | |
453 | { | |
454 | procfs_debuginfo info; | |
455 | char buff[_POSIX_PATH_MAX]; | |
456 | } map; | |
457 | ||
458 | struct info | |
459 | { | |
460 | unsigned addr; | |
461 | unsigned size; | |
462 | unsigned flags; | |
463 | unsigned debug_vaddr; | |
464 | unsigned long long offset; | |
465 | }; | |
466 | ||
467 | struct printinfo | |
468 | { | |
469 | unsigned long long ino; | |
470 | unsigned dev; | |
471 | struct info text; | |
472 | struct info data; | |
473 | char name[256]; | |
474 | } printme; | |
475 | ||
476 | /* Get the number of map entrys. */ | |
477 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num); | |
478 | if (err != EOK) | |
479 | { | |
d737fd7f KW |
480 | printf ("failed devctl num mapinfos - %d (%s)\n", err, |
481 | safe_strerror (err)); | |
61bb466e KW |
482 | return; |
483 | } | |
484 | ||
485 | mapinfos = xmalloc (num * sizeof (procfs_mapinfo)); | |
486 | ||
487 | num_mapinfos = num; | |
488 | mapinfo_p = mapinfos; | |
489 | ||
490 | /* Fill the map entrys. */ | |
491 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, mapinfo_p, num | |
492 | * sizeof (procfs_mapinfo), &num); | |
493 | if (err != EOK) | |
494 | { | |
5483d879 | 495 | printf ("failed devctl mapinfos - %d (%s)\n", err, safe_strerror (err)); |
61bb466e KW |
496 | xfree (mapinfos); |
497 | return; | |
498 | } | |
499 | ||
500 | num = min (num, num_mapinfos); | |
501 | ||
502 | /* Run through the list of mapinfos, and store the data and text info | |
503 | so we can print it at the bottom of the loop. */ | |
504 | for (mapinfo_p = mapinfos, i = 0; i < num; i++, mapinfo_p++) | |
505 | { | |
506 | if (!(mapinfo_p->flags & flags)) | |
507 | mapinfo_p->ino = 0; | |
508 | ||
509 | if (mapinfo_p->ino == 0) /* Already visited. */ | |
510 | continue; | |
511 | ||
512 | map.info.vaddr = mapinfo_p->vaddr; | |
513 | ||
514 | err = devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
515 | if (err != EOK) | |
516 | continue; | |
517 | ||
518 | memset (&printme, 0, sizeof printme); | |
519 | printme.dev = mapinfo_p->dev; | |
520 | printme.ino = mapinfo_p->ino; | |
521 | printme.text.addr = mapinfo_p->vaddr; | |
522 | printme.text.size = mapinfo_p->size; | |
523 | printme.text.flags = mapinfo_p->flags; | |
524 | printme.text.offset = mapinfo_p->offset; | |
525 | printme.text.debug_vaddr = map.info.vaddr; | |
526 | strcpy (printme.name, map.info.path); | |
527 | ||
528 | /* Check for matching data. */ | |
529 | for (mapinfo_p2 = mapinfos, j = 0; j < num; j++, mapinfo_p2++) | |
530 | { | |
531 | if (mapinfo_p2->vaddr != mapinfo_p->vaddr | |
532 | && mapinfo_p2->ino == mapinfo_p->ino | |
533 | && mapinfo_p2->dev == mapinfo_p->dev) | |
534 | { | |
535 | map.info.vaddr = mapinfo_p2->vaddr; | |
536 | err = | |
537 | devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
538 | if (err != EOK) | |
539 | continue; | |
540 | ||
541 | if (strcmp (map.info.path, printme.name)) | |
542 | continue; | |
543 | ||
544 | /* Lower debug_vaddr is always text, if nessessary, swap. */ | |
545 | if ((int) map.info.vaddr < (int) printme.text.debug_vaddr) | |
546 | { | |
547 | memcpy (&(printme.data), &(printme.text), | |
548 | sizeof (printme.data)); | |
549 | printme.text.addr = mapinfo_p2->vaddr; | |
550 | printme.text.size = mapinfo_p2->size; | |
551 | printme.text.flags = mapinfo_p2->flags; | |
552 | printme.text.offset = mapinfo_p2->offset; | |
553 | printme.text.debug_vaddr = map.info.vaddr; | |
554 | } | |
555 | else | |
556 | { | |
557 | printme.data.addr = mapinfo_p2->vaddr; | |
558 | printme.data.size = mapinfo_p2->size; | |
559 | printme.data.flags = mapinfo_p2->flags; | |
560 | printme.data.offset = mapinfo_p2->offset; | |
561 | printme.data.debug_vaddr = map.info.vaddr; | |
562 | } | |
563 | mapinfo_p2->ino = 0; | |
564 | } | |
565 | } | |
566 | mapinfo_p->ino = 0; | |
567 | ||
568 | printf_filtered ("%s\n", printme.name); | |
569 | printf_filtered ("\ttext=%08x bytes @ 0x%08x\n", printme.text.size, | |
570 | printme.text.addr); | |
571 | printf_filtered ("\t\tflags=%08x\n", printme.text.flags); | |
572 | printf_filtered ("\t\tdebug=%08x\n", printme.text.debug_vaddr); | |
2244ba2e | 573 | printf_filtered ("\t\toffset=%s\n", phex (printme.text.offset, 8)); |
61bb466e KW |
574 | if (printme.data.size) |
575 | { | |
576 | printf_filtered ("\tdata=%08x bytes @ 0x%08x\n", printme.data.size, | |
577 | printme.data.addr); | |
578 | printf_filtered ("\t\tflags=%08x\n", printme.data.flags); | |
579 | printf_filtered ("\t\tdebug=%08x\n", printme.data.debug_vaddr); | |
2244ba2e | 580 | printf_filtered ("\t\toffset=%s\n", phex (printme.data.offset, 8)); |
61bb466e KW |
581 | } |
582 | printf_filtered ("\tdev=0x%x\n", printme.dev); | |
583 | printf_filtered ("\tino=0x%x\n", (unsigned int) printme.ino); | |
584 | } | |
585 | xfree (mapinfos); | |
586 | return; | |
587 | } | |
588 | ||
589 | /* Print status information about what we're accessing. */ | |
590 | static void | |
591 | procfs_files_info (struct target_ops *ignore) | |
592 | { | |
181e7f93 PA |
593 | struct inferior *inf = current_inferior (); |
594 | ||
61bb466e | 595 | printf_unfiltered ("\tUsing the running image of %s %s via %s.\n", |
3fdfcbf1 | 596 | inf->attach_flag ? "attached" : "child", |
61bb466e KW |
597 | target_pid_to_str (inferior_ptid), nto_procfs_path); |
598 | } | |
599 | ||
61bb466e KW |
600 | /* Attach to process PID, then initialize for debugging it. */ |
601 | static void | |
c0939df1 | 602 | procfs_attach (struct target_ops *ops, const char *args, int from_tty) |
61bb466e KW |
603 | { |
604 | char *exec_file; | |
605 | int pid; | |
181e7f93 | 606 | struct inferior *inf; |
61bb466e | 607 | |
74164c56 | 608 | pid = parse_pid_to_attach (args); |
61bb466e KW |
609 | |
610 | if (pid == getpid ()) | |
8a3fe4f8 | 611 | error (_("Attaching GDB to itself is not a good idea...")); |
61bb466e KW |
612 | |
613 | if (from_tty) | |
614 | { | |
615 | exec_file = (char *) get_exec_file (0); | |
616 | ||
617 | if (exec_file) | |
618 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
619 | target_pid_to_str (pid_to_ptid (pid))); | |
620 | else | |
621 | printf_unfiltered ("Attaching to %s\n", | |
622 | target_pid_to_str (pid_to_ptid (pid))); | |
623 | ||
624 | gdb_flush (gdb_stdout); | |
625 | } | |
626 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
6c95b8df PA |
627 | inf = current_inferior (); |
628 | inferior_appeared (inf, pid); | |
181e7f93 | 629 | inf->attach_flag = 1; |
7f9f62ba | 630 | |
6a3cb8e8 PA |
631 | if (!target_is_pushed (ops)) |
632 | push_target (ops); | |
7f9f62ba | 633 | |
28439f5e | 634 | procfs_find_new_threads (ops); |
61bb466e KW |
635 | } |
636 | ||
637 | static void | |
f045800c | 638 | procfs_post_attach (struct target_ops *self, pid_t pid) |
61bb466e | 639 | { |
61bb466e | 640 | if (exec_bfd) |
268a4a75 | 641 | solib_create_inferior_hook (0); |
61bb466e KW |
642 | } |
643 | ||
644 | static ptid_t | |
645 | do_attach (ptid_t ptid) | |
646 | { | |
647 | procfs_status status; | |
648 | struct sigevent event; | |
dc5dd1eb | 649 | char path[PATH_MAX]; |
61bb466e | 650 | |
dfd4cc63 LM |
651 | snprintf (path, PATH_MAX - 1, "%s/%d/as", nto_procfs_path, |
652 | ptid_get_pid (ptid)); | |
61bb466e KW |
653 | ctl_fd = open (path, O_RDWR); |
654 | if (ctl_fd == -1) | |
8a3fe4f8 | 655 | error (_("Couldn't open proc file %s, error %d (%s)"), path, errno, |
dc5dd1eb | 656 | safe_strerror (errno)); |
61bb466e | 657 | if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK) |
8a3fe4f8 | 658 | error (_("Couldn't stop process")); |
61bb466e KW |
659 | |
660 | /* Define a sigevent for process stopped notification. */ | |
661 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
662 | event.sigev_signo = SIGUSR1; | |
663 | event.sigev_code = 0; | |
664 | event.sigev_value.sival_ptr = NULL; | |
665 | event.sigev_priority = -1; | |
666 | devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0); | |
667 | ||
668 | if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK | |
669 | && status.flags & _DEBUG_FLAG_STOPPED) | |
dfd4cc63 | 670 | SignalKill (nto_node (), ptid_get_pid (ptid), 0, SIGCONT, 0, 0); |
61bb466e | 671 | nto_init_solib_absolute_prefix (); |
dfd4cc63 | 672 | return ptid_build (ptid_get_pid (ptid), 0, status.tid); |
61bb466e KW |
673 | } |
674 | ||
675 | /* Ask the user what to do when an interrupt is received. */ | |
676 | static void | |
dc5dd1eb | 677 | interrupt_query (void) |
61bb466e KW |
678 | { |
679 | target_terminal_ours (); | |
680 | ||
9e2f0ad4 HZ |
681 | if (query (_("Interrupted while waiting for the program.\n\ |
682 | Give up (and stop debugging it)? "))) | |
61bb466e KW |
683 | { |
684 | target_mourn_inferior (); | |
039e3c22 | 685 | quit (); |
61bb466e KW |
686 | } |
687 | ||
688 | target_terminal_inferior (); | |
689 | } | |
690 | ||
691 | /* The user typed ^C twice. */ | |
692 | static void | |
693 | nto_interrupt_twice (int signo) | |
694 | { | |
695 | signal (signo, ofunc); | |
696 | interrupt_query (); | |
697 | signal (signo, nto_interrupt_twice); | |
698 | } | |
699 | ||
700 | static void | |
701 | nto_interrupt (int signo) | |
702 | { | |
703 | /* If this doesn't work, try more severe steps. */ | |
704 | signal (signo, nto_interrupt_twice); | |
705 | ||
f9c72d52 | 706 | target_stop (inferior_ptid); |
61bb466e KW |
707 | } |
708 | ||
709 | static ptid_t | |
117de6a9 | 710 | procfs_wait (struct target_ops *ops, |
47608cb1 | 711 | ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
61bb466e KW |
712 | { |
713 | sigset_t set; | |
714 | siginfo_t info; | |
715 | procfs_status status; | |
716 | static int exit_signo = 0; /* To track signals that cause termination. */ | |
717 | ||
718 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
719 | ||
720 | if (ptid_equal (inferior_ptid, null_ptid)) | |
721 | { | |
722 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 723 | ourstatus->value.sig = GDB_SIGNAL_0; |
61bb466e KW |
724 | exit_signo = 0; |
725 | return null_ptid; | |
726 | } | |
727 | ||
728 | sigemptyset (&set); | |
729 | sigaddset (&set, SIGUSR1); | |
730 | ||
731 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
732 | while (!(status.flags & _DEBUG_FLAG_ISTOP)) | |
733 | { | |
734 | ofunc = (void (*)()) signal (SIGINT, nto_interrupt); | |
735 | sigwaitinfo (&set, &info); | |
736 | signal (SIGINT, ofunc); | |
737 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
738 | } | |
739 | ||
740 | if (status.flags & _DEBUG_FLAG_SSTEP) | |
741 | { | |
742 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 743 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
744 | } |
745 | /* Was it a breakpoint? */ | |
746 | else if (status.flags & _DEBUG_FLAG_TRACE) | |
747 | { | |
748 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 749 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
750 | } |
751 | else if (status.flags & _DEBUG_FLAG_ISTOP) | |
752 | { | |
753 | switch (status.why) | |
754 | { | |
755 | case _DEBUG_WHY_SIGNALLED: | |
756 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
757 | ourstatus->value.sig = | |
2ea28649 | 758 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
759 | exit_signo = 0; |
760 | break; | |
761 | case _DEBUG_WHY_FAULTED: | |
762 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
763 | if (status.info.si_signo == SIGTRAP) | |
764 | { | |
765 | ourstatus->value.sig = 0; | |
766 | exit_signo = 0; | |
767 | } | |
768 | else | |
769 | { | |
770 | ourstatus->value.sig = | |
2ea28649 | 771 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
772 | exit_signo = ourstatus->value.sig; |
773 | } | |
774 | break; | |
775 | ||
776 | case _DEBUG_WHY_TERMINATED: | |
777 | { | |
778 | int waitval = 0; | |
779 | ||
dfd4cc63 | 780 | waitpid (ptid_get_pid (inferior_ptid), &waitval, WNOHANG); |
61bb466e KW |
781 | if (exit_signo) |
782 | { | |
783 | /* Abnormal death. */ | |
784 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
785 | ourstatus->value.sig = exit_signo; | |
786 | } | |
787 | else | |
788 | { | |
789 | /* Normal death. */ | |
790 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
791 | ourstatus->value.integer = WEXITSTATUS (waitval); | |
792 | } | |
793 | exit_signo = 0; | |
794 | break; | |
795 | } | |
796 | ||
797 | case _DEBUG_WHY_REQUESTED: | |
798 | /* We are assuming a requested stop is due to a SIGINT. */ | |
799 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 800 | ourstatus->value.sig = GDB_SIGNAL_INT; |
61bb466e KW |
801 | exit_signo = 0; |
802 | break; | |
803 | } | |
804 | } | |
805 | ||
a6a7f2a5 | 806 | return ptid_build (status.pid, 0, status.tid); |
61bb466e KW |
807 | } |
808 | ||
809 | /* Read the current values of the inferior's registers, both the | |
810 | general register set and floating point registers (if supported) | |
811 | and update gdb's idea of their current values. */ | |
812 | static void | |
28439f5e PA |
813 | procfs_fetch_registers (struct target_ops *ops, |
814 | struct regcache *regcache, int regno) | |
61bb466e KW |
815 | { |
816 | union | |
817 | { | |
818 | procfs_greg greg; | |
819 | procfs_fpreg fpreg; | |
820 | procfs_altreg altreg; | |
821 | } | |
822 | reg; | |
823 | int regsize; | |
824 | ||
825 | procfs_set_thread (inferior_ptid); | |
826 | if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK) | |
56be3814 | 827 | nto_supply_gregset (regcache, (char *) ®.greg); |
61bb466e KW |
828 | if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size) |
829 | == EOK) | |
56be3814 | 830 | nto_supply_fpregset (regcache, (char *) ®.fpreg); |
61bb466e KW |
831 | if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size) |
832 | == EOK) | |
56be3814 | 833 | nto_supply_altregset (regcache, (char *) ®.altreg); |
61bb466e KW |
834 | } |
835 | ||
9d46c4e5 PA |
836 | /* Helper for procfs_xfer_partial that handles memory transfers. |
837 | Arguments are like target_xfer_partial. */ | |
61bb466e | 838 | |
9d46c4e5 PA |
839 | static enum target_xfer_status |
840 | procfs_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, | |
841 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
61bb466e | 842 | { |
9d46c4e5 PA |
843 | int nbytes; |
844 | ||
845 | if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) != (off_t) memaddr) | |
846 | return TARGET_XFER_E_IO; | |
847 | ||
848 | if (writebuf != NULL) | |
849 | nbytes = write (ctl_fd, writebuf, len); | |
850 | else | |
851 | nbytes = read (ctl_fd, readbuf, len); | |
852 | if (nbytes <= 0) | |
853 | return TARGET_XFER_E_IO; | |
854 | *xfered_len = nbytes; | |
855 | return TARGET_XFER_OK; | |
856 | } | |
857 | ||
858 | /* Target to_xfer_partial implementation. */ | |
61bb466e | 859 | |
9d46c4e5 PA |
860 | static enum target_xfer_status |
861 | procfs_xfer_partial (struct target_ops *ops, enum target_object object, | |
862 | const char *annex, gdb_byte *readbuf, | |
863 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
864 | ULONGEST *xfered_len) | |
865 | { | |
866 | switch (object) | |
61bb466e | 867 | { |
9d46c4e5 PA |
868 | case TARGET_OBJECT_MEMORY: |
869 | return procfs_xfer_memory (readbuf, writebuf, offset, len, xfered_len); | |
870 | default: | |
871 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
872 | readbuf, writebuf, offset, len); | |
61bb466e | 873 | } |
61bb466e KW |
874 | } |
875 | ||
876 | /* Take a program previously attached to and detaches it. | |
877 | The program resumes execution and will no longer stop | |
878 | on signals, etc. We'd better not have left any breakpoints | |
879 | in the program or it'll die when it hits one. */ | |
880 | static void | |
52554a0e | 881 | procfs_detach (struct target_ops *ops, const char *args, int from_tty) |
61bb466e KW |
882 | { |
883 | int siggnal = 0; | |
7f9f62ba | 884 | int pid; |
61bb466e KW |
885 | |
886 | if (from_tty) | |
887 | { | |
888 | char *exec_file = get_exec_file (0); | |
889 | if (exec_file == 0) | |
890 | exec_file = ""; | |
891 | printf_unfiltered ("Detaching from program: %s %s\n", | |
892 | exec_file, target_pid_to_str (inferior_ptid)); | |
893 | gdb_flush (gdb_stdout); | |
894 | } | |
895 | if (args) | |
896 | siggnal = atoi (args); | |
897 | ||
898 | if (siggnal) | |
dfd4cc63 | 899 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, siggnal, 0, 0); |
61bb466e KW |
900 | |
901 | close (ctl_fd); | |
902 | ctl_fd = -1; | |
7f9f62ba PA |
903 | |
904 | pid = ptid_get_pid (inferior_ptid); | |
61bb466e | 905 | inferior_ptid = null_ptid; |
7f9f62ba PA |
906 | detach_inferior (pid); |
907 | init_thread_list (); | |
6a3cb8e8 | 908 | inf_child_maybe_unpush_target (ops); |
61bb466e KW |
909 | } |
910 | ||
911 | static int | |
912 | procfs_breakpoint (CORE_ADDR addr, int type, int size) | |
913 | { | |
914 | procfs_break brk; | |
915 | ||
916 | brk.type = type; | |
917 | brk.addr = addr; | |
918 | brk.size = size; | |
919 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
920 | if (errno != EOK) | |
921 | return 1; | |
922 | return 0; | |
923 | } | |
924 | ||
925 | static int | |
3db08215 | 926 | procfs_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 927 | struct bp_target_info *bp_tgt) |
61bb466e | 928 | { |
0d5ed153 | 929 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f | 930 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, 0); |
61bb466e KW |
931 | } |
932 | ||
933 | static int | |
3db08215 | 934 | procfs_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 935 | struct bp_target_info *bp_tgt) |
61bb466e | 936 | { |
8181d85f | 937 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, -1); |
61bb466e KW |
938 | } |
939 | ||
940 | static int | |
23a26771 | 941 | procfs_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 942 | struct bp_target_info *bp_tgt) |
61bb466e | 943 | { |
0d5ed153 | 944 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f DJ |
945 | return procfs_breakpoint (bp_tgt->placed_address, |
946 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0); | |
61bb466e KW |
947 | } |
948 | ||
949 | static int | |
8476dc92 TT |
950 | procfs_remove_hw_breakpoint (struct target_ops *self, |
951 | struct gdbarch *gdbarch, | |
a6d9a66e | 952 | struct bp_target_info *bp_tgt) |
61bb466e | 953 | { |
8181d85f DJ |
954 | return procfs_breakpoint (bp_tgt->placed_address, |
955 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1); | |
61bb466e KW |
956 | } |
957 | ||
958 | static void | |
28439f5e | 959 | procfs_resume (struct target_ops *ops, |
2ea28649 | 960 | ptid_t ptid, int step, enum gdb_signal signo) |
61bb466e KW |
961 | { |
962 | int signal_to_pass; | |
963 | procfs_status status; | |
14ef7606 | 964 | sigset_t *run_fault = (sigset_t *) (void *) &run.fault; |
61bb466e KW |
965 | |
966 | if (ptid_equal (inferior_ptid, null_ptid)) | |
967 | return; | |
968 | ||
969 | procfs_set_thread (ptid_equal (ptid, minus_one_ptid) ? inferior_ptid : | |
970 | ptid); | |
971 | ||
972 | run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE; | |
973 | if (step) | |
974 | run.flags |= _DEBUG_RUN_STEP; | |
975 | ||
14ef7606 AR |
976 | sigemptyset (run_fault); |
977 | sigaddset (run_fault, FLTBPT); | |
978 | sigaddset (run_fault, FLTTRACE); | |
979 | sigaddset (run_fault, FLTILL); | |
980 | sigaddset (run_fault, FLTPRIV); | |
981 | sigaddset (run_fault, FLTBOUNDS); | |
982 | sigaddset (run_fault, FLTIOVF); | |
983 | sigaddset (run_fault, FLTIZDIV); | |
984 | sigaddset (run_fault, FLTFPE); | |
61bb466e | 985 | /* Peter V will be changing this at some point. */ |
14ef7606 | 986 | sigaddset (run_fault, FLTPAGE); |
61bb466e KW |
987 | |
988 | run.flags |= _DEBUG_RUN_ARM; | |
989 | ||
2ea28649 | 990 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
991 | |
992 | if (signal_to_pass) | |
993 | { | |
994 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
2ea28649 | 995 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
996 | if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED)) |
997 | { | |
998 | if (signal_to_pass != status.info.si_signo) | |
999 | { | |
dfd4cc63 | 1000 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, |
d737fd7f | 1001 | signal_to_pass, 0, 0); |
61bb466e KW |
1002 | run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG; |
1003 | } | |
0df8b418 | 1004 | else /* Let it kill the program without telling us. */ |
61bb466e KW |
1005 | sigdelset (&run.trace, signal_to_pass); |
1006 | } | |
1007 | } | |
1008 | else | |
1009 | run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT; | |
1010 | ||
1011 | errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0); | |
1012 | if (errno != EOK) | |
1013 | { | |
9b20d036 | 1014 | perror (_("run error!\n")); |
61bb466e KW |
1015 | return; |
1016 | } | |
1017 | } | |
1018 | ||
1019 | static void | |
136d6dae | 1020 | procfs_mourn_inferior (struct target_ops *ops) |
61bb466e KW |
1021 | { |
1022 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
1023 | { | |
dfd4cc63 | 1024 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, SIGKILL, 0, 0); |
61bb466e KW |
1025 | close (ctl_fd); |
1026 | } | |
1027 | inferior_ptid = null_ptid; | |
1028 | init_thread_list (); | |
c1ee2fb3 | 1029 | inf_child_mourn_inferior (ops); |
61bb466e KW |
1030 | } |
1031 | ||
1032 | /* This function breaks up an argument string into an argument | |
1033 | vector suitable for passing to execvp(). | |
1034 | E.g., on "run a b c d" this routine would get as input | |
1035 | the string "a b c d", and as output it would fill in argv with | |
1036 | the four arguments "a", "b", "c", "d". The only additional | |
1037 | functionality is simple quoting. The gdb command: | |
1038 | run a "b c d" f | |
1039 | will fill in argv with the three args "a", "b c d", "e". */ | |
1040 | static void | |
1041 | breakup_args (char *scratch, char **argv) | |
1042 | { | |
1043 | char *pp, *cp = scratch; | |
1044 | char quoting = 0; | |
1045 | ||
1046 | for (;;) | |
1047 | { | |
1048 | /* Scan past leading separators. */ | |
1049 | quoting = 0; | |
1050 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') | |
1051 | cp++; | |
1052 | ||
1053 | /* Break if at end of string. */ | |
1054 | if (*cp == '\0') | |
1055 | break; | |
1056 | ||
1057 | /* Take an arg. */ | |
1058 | if (*cp == '"') | |
1059 | { | |
1060 | cp++; | |
1061 | quoting = strchr (cp, '"') ? 1 : 0; | |
1062 | } | |
1063 | ||
1064 | *argv++ = cp; | |
1065 | ||
1066 | /* Scan for next arg separator. */ | |
1067 | pp = cp; | |
1068 | if (quoting) | |
1069 | cp = strchr (pp, '"'); | |
1070 | if ((cp == NULL) || (!quoting)) | |
1071 | cp = strchr (pp, ' '); | |
1072 | if (cp == NULL) | |
1073 | cp = strchr (pp, '\t'); | |
1074 | if (cp == NULL) | |
1075 | cp = strchr (pp, '\n'); | |
1076 | ||
1077 | /* No separators => end of string => break. */ | |
1078 | if (cp == NULL) | |
1079 | { | |
1080 | pp = cp; | |
1081 | break; | |
1082 | } | |
1083 | ||
1084 | /* Replace the separator with a terminator. */ | |
1085 | *cp++ = '\0'; | |
1086 | } | |
1087 | ||
1088 | /* Execv requires a null-terminated arg vector. */ | |
1089 | *argv = NULL; | |
1090 | } | |
1091 | ||
1092 | static void | |
136d6dae VP |
1093 | procfs_create_inferior (struct target_ops *ops, char *exec_file, |
1094 | char *allargs, char **env, int from_tty) | |
61bb466e KW |
1095 | { |
1096 | struct inheritance inherit; | |
1097 | pid_t pid; | |
1098 | int flags, errn; | |
1099 | char **argv, *args; | |
3cb3b8df | 1100 | const char *in = "", *out = "", *err = ""; |
61bb466e KW |
1101 | int fd, fds[3]; |
1102 | sigset_t set; | |
3cb3b8df | 1103 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
3fdfcbf1 | 1104 | struct inferior *inf; |
61bb466e KW |
1105 | |
1106 | argv = xmalloc (((strlen (allargs) + 1) / (unsigned) 2 + 2) * | |
1107 | sizeof (*argv)); | |
1108 | argv[0] = get_exec_file (1); | |
1109 | if (!argv[0]) | |
1110 | { | |
1111 | if (exec_file) | |
1112 | argv[0] = exec_file; | |
1113 | else | |
1114 | return; | |
1115 | } | |
1116 | ||
1117 | args = xstrdup (allargs); | |
1118 | breakup_args (args, exec_file ? &argv[1] : &argv[0]); | |
1119 | ||
1120 | argv = nto_parse_redirection (argv, &in, &out, &err); | |
1121 | ||
1122 | fds[0] = STDIN_FILENO; | |
1123 | fds[1] = STDOUT_FILENO; | |
1124 | fds[2] = STDERR_FILENO; | |
1125 | ||
1126 | /* If the user specified I/O via gdb's --tty= arg, use it, but only | |
1127 | if the i/o is not also being specified via redirection. */ | |
1128 | if (inferior_io_terminal) | |
1129 | { | |
1130 | if (!in[0]) | |
1131 | in = inferior_io_terminal; | |
1132 | if (!out[0]) | |
1133 | out = inferior_io_terminal; | |
1134 | if (!err[0]) | |
1135 | err = inferior_io_terminal; | |
1136 | } | |
1137 | ||
1138 | if (in[0]) | |
1139 | { | |
1140 | fd = open (in, O_RDONLY); | |
1141 | if (fd == -1) | |
1142 | perror (in); | |
1143 | else | |
1144 | fds[0] = fd; | |
1145 | } | |
1146 | if (out[0]) | |
1147 | { | |
1148 | fd = open (out, O_WRONLY); | |
1149 | if (fd == -1) | |
1150 | perror (out); | |
1151 | else | |
1152 | fds[1] = fd; | |
1153 | } | |
1154 | if (err[0]) | |
1155 | { | |
1156 | fd = open (err, O_WRONLY); | |
1157 | if (fd == -1) | |
1158 | perror (err); | |
1159 | else | |
1160 | fds[2] = fd; | |
1161 | } | |
1162 | ||
1163 | /* Clear any pending SIGUSR1's but keep the behavior the same. */ | |
1164 | signal (SIGUSR1, signal (SIGUSR1, SIG_IGN)); | |
1165 | ||
1166 | sigemptyset (&set); | |
1167 | sigaddset (&set, SIGUSR1); | |
1168 | sigprocmask (SIG_UNBLOCK, &set, NULL); | |
1169 | ||
1170 | memset (&inherit, 0, sizeof (inherit)); | |
1171 | ||
1172 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0) | |
1173 | { | |
d737fd7f | 1174 | inherit.nd = nto_node (); |
61bb466e KW |
1175 | inherit.flags |= SPAWN_SETND; |
1176 | inherit.flags &= ~SPAWN_EXEC; | |
1177 | } | |
1178 | inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD; | |
1179 | inherit.pgroup = SPAWN_NEWPGROUP; | |
1180 | pid = spawnp (argv[0], 3, fds, &inherit, argv, | |
1181 | ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0); | |
1182 | xfree (args); | |
1183 | ||
1184 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1185 | ||
1186 | if (pid == -1) | |
8a3fe4f8 | 1187 | error (_("Error spawning %s: %d (%s)"), argv[0], errno, |
d737fd7f | 1188 | safe_strerror (errno)); |
61bb466e KW |
1189 | |
1190 | if (fds[0] != STDIN_FILENO) | |
1191 | close (fds[0]); | |
1192 | if (fds[1] != STDOUT_FILENO) | |
1193 | close (fds[1]); | |
1194 | if (fds[2] != STDERR_FILENO) | |
1195 | close (fds[2]); | |
1196 | ||
1197 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
28439f5e | 1198 | procfs_find_new_threads (ops); |
61bb466e | 1199 | |
6c95b8df PA |
1200 | inf = current_inferior (); |
1201 | inferior_appeared (inf, pid); | |
3fdfcbf1 | 1202 | inf->attach_flag = 0; |
7f9f62ba | 1203 | |
61bb466e KW |
1204 | flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */ |
1205 | errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0); | |
1206 | if (errn != EOK) | |
1207 | { | |
1208 | /* FIXME: expected warning? */ | |
1209 | /* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n", | |
1210 | errn, strerror(errn) ); */ | |
1211 | } | |
6a3cb8e8 PA |
1212 | if (!target_is_pushed (ops)) |
1213 | push_target (ops); | |
61bb466e KW |
1214 | target_terminal_init (); |
1215 | ||
61bb466e KW |
1216 | if (exec_bfd != NULL |
1217 | || (symfile_objfile != NULL && symfile_objfile->obfd != NULL)) | |
268a4a75 | 1218 | solib_create_inferior_hook (0); |
61bb466e KW |
1219 | } |
1220 | ||
1221 | static void | |
1eab8a48 | 1222 | procfs_stop (struct target_ops *self, ptid_t ptid) |
61bb466e KW |
1223 | { |
1224 | devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0); | |
1225 | } | |
1226 | ||
1227 | static void | |
7d85a9c0 | 1228 | procfs_kill_inferior (struct target_ops *ops) |
61bb466e KW |
1229 | { |
1230 | target_mourn_inferior (); | |
1231 | } | |
1232 | ||
61bb466e KW |
1233 | /* Fill buf with regset and return devctl cmd to do the setting. Return |
1234 | -1 if we fail to get the regset. Store size of regset in regsize. */ | |
1235 | static int | |
1236 | get_regset (int regset, char *buf, int bufsize, int *regsize) | |
1237 | { | |
1238 | int dev_get, dev_set; | |
1239 | switch (regset) | |
1240 | { | |
1241 | case NTO_REG_GENERAL: | |
1242 | dev_get = DCMD_PROC_GETGREG; | |
1243 | dev_set = DCMD_PROC_SETGREG; | |
1244 | break; | |
1245 | ||
1246 | case NTO_REG_FLOAT: | |
1247 | dev_get = DCMD_PROC_GETFPREG; | |
1248 | dev_set = DCMD_PROC_SETFPREG; | |
1249 | break; | |
1250 | ||
1251 | case NTO_REG_ALT: | |
1252 | dev_get = DCMD_PROC_GETALTREG; | |
1253 | dev_set = DCMD_PROC_SETALTREG; | |
1254 | break; | |
1255 | ||
1256 | case NTO_REG_SYSTEM: | |
1257 | default: | |
1258 | return -1; | |
1259 | } | |
97c44116 | 1260 | if (devctl (ctl_fd, dev_get, buf, bufsize, regsize) != EOK) |
61bb466e KW |
1261 | return -1; |
1262 | ||
1263 | return dev_set; | |
1264 | } | |
1265 | ||
1266 | void | |
28439f5e PA |
1267 | procfs_store_registers (struct target_ops *ops, |
1268 | struct regcache *regcache, int regno) | |
61bb466e KW |
1269 | { |
1270 | union | |
1271 | { | |
1272 | procfs_greg greg; | |
1273 | procfs_fpreg fpreg; | |
1274 | procfs_altreg altreg; | |
1275 | } | |
1276 | reg; | |
1277 | unsigned off; | |
1278 | int len, regset, regsize, dev_set, err; | |
1279 | char *data; | |
1280 | ||
1281 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1282 | return; | |
1283 | procfs_set_thread (inferior_ptid); | |
1284 | ||
1285 | if (regno == -1) | |
1286 | { | |
1287 | for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++) | |
1288 | { | |
1289 | dev_set = get_regset (regset, (char *) ®, | |
1290 | sizeof (reg), ®size); | |
1291 | if (dev_set == -1) | |
1292 | continue; | |
1293 | ||
56be3814 | 1294 | if (nto_regset_fill (regcache, regset, (char *) ®) == -1) |
61bb466e KW |
1295 | continue; |
1296 | ||
1297 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1298 | if (err != EOK) | |
1299 | fprintf_unfiltered (gdb_stderr, | |
1300 | "Warning unable to write regset %d: %s\n", | |
dc5dd1eb | 1301 | regno, safe_strerror (err)); |
61bb466e KW |
1302 | } |
1303 | } | |
1304 | else | |
1305 | { | |
1306 | regset = nto_regset_id (regno); | |
1307 | if (regset == -1) | |
1308 | return; | |
1309 | ||
1310 | dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size); | |
1311 | if (dev_set == -1) | |
1312 | return; | |
1313 | ||
60441ab9 UW |
1314 | len = nto_register_area (get_regcache_arch (regcache), |
1315 | regno, regset, &off); | |
61bb466e KW |
1316 | |
1317 | if (len < 1) | |
1318 | return; | |
1319 | ||
56be3814 | 1320 | regcache_raw_collect (regcache, regno, (char *) ® + off); |
61bb466e KW |
1321 | |
1322 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1323 | if (err != EOK) | |
1324 | fprintf_unfiltered (gdb_stderr, | |
1325 | "Warning unable to write regset %d: %s\n", regno, | |
dc5dd1eb | 1326 | safe_strerror (err)); |
61bb466e KW |
1327 | } |
1328 | } | |
1329 | ||
2455069d UW |
1330 | /* Set list of signals to be handled in the target. */ |
1331 | ||
61bb466e | 1332 | static void |
94bedb42 TT |
1333 | procfs_pass_signals (struct target_ops *self, |
1334 | int numsigs, unsigned char *pass_signals) | |
61bb466e KW |
1335 | { |
1336 | int signo; | |
1337 | ||
2455069d UW |
1338 | sigfillset (&run.trace); |
1339 | ||
61bb466e KW |
1340 | for (signo = 1; signo < NSIG; signo++) |
1341 | { | |
2ea28649 | 1342 | int target_signo = gdb_signal_from_host (signo); |
2455069d UW |
1343 | if (target_signo < numsigs && pass_signals[target_signo]) |
1344 | sigdelset (&run.trace, signo); | |
61bb466e KW |
1345 | } |
1346 | } | |
1347 | ||
61bb466e KW |
1348 | static struct tidinfo * |
1349 | procfs_thread_info (pid_t pid, short tid) | |
1350 | { | |
1351 | /* NYI */ | |
1352 | return NULL; | |
1353 | } | |
1354 | ||
94c74239 | 1355 | static char * |
117de6a9 | 1356 | procfs_pid_to_str (struct target_ops *ops, ptid_t ptid) |
61bb466e KW |
1357 | { |
1358 | static char buf[1024]; | |
1359 | int pid, tid, n; | |
1360 | struct tidinfo *tip; | |
1361 | ||
1362 | pid = ptid_get_pid (ptid); | |
1363 | tid = ptid_get_tid (ptid); | |
1364 | ||
dc5dd1eb | 1365 | n = snprintf (buf, 1023, "process %d", pid); |
61bb466e KW |
1366 | |
1367 | #if 0 /* NYI */ | |
1368 | tip = procfs_thread_info (pid, tid); | |
1369 | if (tip != NULL) | |
dc5dd1eb | 1370 | snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state); |
61bb466e KW |
1371 | #endif |
1372 | ||
1373 | return buf; | |
1374 | } | |
1375 | ||
132f8e03 PA |
1376 | /* to_can_run implementation for "target procfs". Note this really |
1377 | means "can this target be the default run target", which there can | |
1378 | be only one, and we make it be "target native" like other ports. | |
1379 | "target procfs <node>" wouldn't make sense as default run target, as | |
1380 | it needs <node>. */ | |
ee8e9165 | 1381 | |
132f8e03 PA |
1382 | static int |
1383 | procfs_can_run (struct target_ops *self) | |
1384 | { | |
1385 | return 0; | |
1386 | } | |
1387 | ||
1388 | /* "target procfs". */ | |
1389 | static struct target_ops nto_procfs_ops; | |
1390 | ||
6a3cb8e8 PA |
1391 | /* "target native". */ |
1392 | static struct target_ops *nto_native_ops; | |
1393 | ||
1394 | /* to_open implementation for "target procfs". */ | |
1395 | ||
1396 | static void | |
014f9477 | 1397 | procfs_open (const char *arg, int from_tty) |
6a3cb8e8 PA |
1398 | { |
1399 | procfs_open_1 (&nto_procfs_ops, arg, from_tty); | |
1400 | } | |
1401 | ||
1402 | /* to_open implementation for "target native". */ | |
1403 | ||
1404 | static void | |
014f9477 | 1405 | procfs_native_open (const char *arg, int from_tty) |
6a3cb8e8 PA |
1406 | { |
1407 | procfs_open_1 (nto_native_ops, arg, from_tty); | |
1408 | } | |
1409 | ||
132f8e03 PA |
1410 | /* Create the "native" and "procfs" targets. */ |
1411 | ||
1412 | static void | |
1413 | init_procfs_targets (void) | |
61bb466e | 1414 | { |
ee8e9165 PA |
1415 | struct target_ops *t = inf_child_target (); |
1416 | ||
132f8e03 PA |
1417 | /* Leave to_shortname as "native". */ |
1418 | t->to_longname = "QNX Neutrino local process"; | |
1419 | t->to_doc = "QNX Neutrino local process (started by the \"run\" command)."; | |
6a3cb8e8 | 1420 | t->to_open = procfs_native_open; |
ee8e9165 PA |
1421 | t->to_attach = procfs_attach; |
1422 | t->to_post_attach = procfs_post_attach; | |
1423 | t->to_detach = procfs_detach; | |
1424 | t->to_resume = procfs_resume; | |
1425 | t->to_wait = procfs_wait; | |
1426 | t->to_fetch_registers = procfs_fetch_registers; | |
1427 | t->to_store_registers = procfs_store_registers; | |
1428 | t->to_xfer_partial = procfs_xfer_partial; | |
1429 | t->to_files_info = procfs_files_info; | |
1430 | t->to_insert_breakpoint = procfs_insert_breakpoint; | |
1431 | t->to_remove_breakpoint = procfs_remove_breakpoint; | |
1432 | t->to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint; | |
1433 | t->to_insert_hw_breakpoint = procfs_insert_hw_breakpoint; | |
1434 | t->to_remove_hw_breakpoint = procfs_remove_hw_breakpoint; | |
1435 | t->to_insert_watchpoint = procfs_insert_hw_watchpoint; | |
1436 | t->to_remove_watchpoint = procfs_remove_hw_watchpoint; | |
1437 | t->to_stopped_by_watchpoint = procfs_stopped_by_watchpoint; | |
1438 | t->to_kill = procfs_kill_inferior; | |
1439 | t->to_create_inferior = procfs_create_inferior; | |
1440 | t->to_mourn_inferior = procfs_mourn_inferior; | |
1441 | t->to_pass_signals = procfs_pass_signals; | |
1442 | t->to_thread_alive = procfs_thread_alive; | |
1443 | t->to_find_new_threads = procfs_find_new_threads; | |
1444 | t->to_pid_to_str = procfs_pid_to_str; | |
1445 | t->to_stop = procfs_stop; | |
1446 | t->to_have_continuable_watchpoint = 1; | |
1447 | t->to_extra_thread_info = nto_extra_thread_info; | |
1448 | ||
6a3cb8e8 PA |
1449 | nto_native_ops = t; |
1450 | ||
132f8e03 PA |
1451 | /* Register "target native". This is the default run target. */ |
1452 | add_target (t); | |
1453 | ||
1454 | /* Register "target procfs <node>". */ | |
1455 | nto_procfs_ops = *t; | |
1456 | nto_procfs_ops.to_shortname = "procfs"; | |
1457 | nto_procfs_ops.to_can_run = procfs_can_run; | |
1458 | t->to_longname = "QNX Neutrino local or remote process"; | |
1459 | t->to_doc = "QNX Neutrino process. target procfs <node>"; | |
6a3cb8e8 PA |
1460 | t->to_open = procfs_open; |
1461 | ||
132f8e03 | 1462 | add_target (&nto_procfs_ops); |
61bb466e KW |
1463 | } |
1464 | ||
1465 | #define OSTYPE_NTO 1 | |
1466 | ||
1467 | void | |
dc5dd1eb | 1468 | _initialize_procfs (void) |
61bb466e KW |
1469 | { |
1470 | sigset_t set; | |
1471 | ||
132f8e03 | 1472 | init_procfs_targets (); |
61bb466e KW |
1473 | |
1474 | /* We use SIGUSR1 to gain control after we block waiting for a process. | |
1475 | We use sigwaitevent to wait. */ | |
1476 | sigemptyset (&set); | |
1477 | sigaddset (&set, SIGUSR1); | |
1478 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1479 | ||
2455069d UW |
1480 | /* Initially, make sure all signals are reported. */ |
1481 | sigfillset (&run.trace); | |
61bb466e KW |
1482 | |
1483 | /* Stuff some information. */ | |
1484 | nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags; | |
1485 | nto_cpuinfo_valid = 1; | |
1486 | ||
1bedd215 AC |
1487 | add_info ("pidlist", procfs_pidlist, _("pidlist")); |
1488 | add_info ("meminfo", procfs_meminfo, _("memory information")); | |
d737fd7f KW |
1489 | |
1490 | nto_is_nto_target = procfs_is_nto_target; | |
61bb466e KW |
1491 | } |
1492 | ||
1493 | ||
1494 | static int | |
1495 | procfs_hw_watchpoint (int addr, int len, int type) | |
1496 | { | |
1497 | procfs_break brk; | |
1498 | ||
1499 | switch (type) | |
1500 | { | |
1501 | case 1: /* Read. */ | |
1502 | brk.type = _DEBUG_BREAK_RD; | |
1503 | break; | |
1504 | case 2: /* Read/Write. */ | |
1505 | brk.type = _DEBUG_BREAK_RW; | |
1506 | break; | |
1507 | default: /* Modify. */ | |
1508 | /* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */ | |
1509 | brk.type = _DEBUG_BREAK_RW; | |
1510 | } | |
1511 | brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */ | |
1512 | brk.addr = addr; | |
1513 | brk.size = len; | |
1514 | ||
1515 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1516 | if (errno != EOK) | |
1517 | { | |
9b20d036 | 1518 | perror (_("Failed to set hardware watchpoint")); |
61bb466e KW |
1519 | return -1; |
1520 | } | |
1521 | return 0; | |
1522 | } | |
1523 | ||
1524 | static int | |
5461485a TT |
1525 | procfs_can_use_hw_breakpoint (struct target_ops *self, |
1526 | int type, int cnt, int othertype) | |
61bb466e KW |
1527 | { |
1528 | return 1; | |
1529 | } | |
1530 | ||
1531 | static int | |
11b5219a TT |
1532 | procfs_remove_hw_watchpoint (struct target_ops *self, |
1533 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 1534 | struct expression *cond) |
61bb466e KW |
1535 | { |
1536 | return procfs_hw_watchpoint (addr, -1, type); | |
1537 | } | |
1538 | ||
1539 | static int | |
7bb99c53 TT |
1540 | procfs_insert_hw_watchpoint (struct target_ops *self, |
1541 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 1542 | struct expression *cond) |
61bb466e KW |
1543 | { |
1544 | return procfs_hw_watchpoint (addr, len, type); | |
1545 | } | |
1546 | ||
1547 | static int | |
6a109b6b | 1548 | procfs_stopped_by_watchpoint (struct target_ops *ops) |
61bb466e KW |
1549 | { |
1550 | return 0; | |
1551 | } |