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 KW |
32 | #include <sys/netmgr.h> |
33 | ||
60250e8b | 34 | #include "exceptions.h" |
0e9f083f | 35 | #include <string.h> |
61bb466e KW |
36 | #include "gdbcore.h" |
37 | #include "inferior.h" | |
38 | #include "target.h" | |
39 | #include "objfiles.h" | |
40 | #include "gdbthread.h" | |
41 | #include "nto-tdep.h" | |
42 | #include "command.h" | |
43 | #include "regcache.h" | |
5ea03926 | 44 | #include "solib.h" |
ee8e9165 | 45 | #include "inf-child.h" |
61bb466e KW |
46 | |
47 | #define NULL_PID 0 | |
48 | #define _DEBUG_FLAG_TRACE (_DEBUG_FLAG_TRACE_EXEC|_DEBUG_FLAG_TRACE_RD|\ | |
49 | _DEBUG_FLAG_TRACE_WR|_DEBUG_FLAG_TRACE_MODIFY) | |
50 | ||
61bb466e KW |
51 | int ctl_fd; |
52 | ||
53 | static void (*ofunc) (); | |
54 | ||
55 | static procfs_run run; | |
56 | ||
61bb466e KW |
57 | static ptid_t do_attach (ptid_t ptid); |
58 | ||
5461485a TT |
59 | static int procfs_can_use_hw_breakpoint (struct target_ops *self, |
60 | int, int, int); | |
61bb466e | 61 | |
7bb99c53 TT |
62 | static int procfs_insert_hw_watchpoint (struct target_ops *self, |
63 | CORE_ADDR addr, int len, int type, | |
a8f42b45 | 64 | struct expression *cond); |
61bb466e | 65 | |
11b5219a TT |
66 | static int procfs_remove_hw_watchpoint (struct target_ops *self, |
67 | CORE_ADDR addr, int len, int type, | |
a8f42b45 | 68 | struct expression *cond); |
61bb466e | 69 | |
6a109b6b | 70 | static int procfs_stopped_by_watchpoint (struct target_ops *ops); |
61bb466e | 71 | |
6a3cb8e8 | 72 | /* These two globals are only ever set in procfs_open_1, but are |
61bb466e KW |
73 | referenced elsewhere. 'nto_procfs_node' is a flag used to say |
74 | whether we are local, or we should get the current node descriptor | |
75 | for the remote QNX node. */ | |
76 | static char nto_procfs_path[PATH_MAX] = { "/proc" }; | |
77 | static unsigned nto_procfs_node = ND_LOCAL_NODE; | |
78 | ||
79 | /* Return the current QNX Node, or error out. This is a simple | |
80 | wrapper for the netmgr_strtond() function. The reason this | |
81 | is required is because QNX node descriptors are transient so | |
82 | we have to re-acquire them every time. */ | |
83 | static unsigned | |
d737fd7f | 84 | nto_node (void) |
61bb466e KW |
85 | { |
86 | unsigned node; | |
87 | ||
d737fd7f | 88 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0) |
61bb466e KW |
89 | return ND_LOCAL_NODE; |
90 | ||
d737fd7f | 91 | node = netmgr_strtond (nto_procfs_path, 0); |
61bb466e | 92 | if (node == -1) |
8a3fe4f8 | 93 | error (_("Lost the QNX node. Debug session probably over.")); |
61bb466e KW |
94 | |
95 | return (node); | |
96 | } | |
97 | ||
d737fd7f KW |
98 | static enum gdb_osabi |
99 | procfs_is_nto_target (bfd *abfd) | |
100 | { | |
101 | return GDB_OSABI_QNXNTO; | |
102 | } | |
103 | ||
6a3cb8e8 PA |
104 | /* This is called when we call 'target native' or 'target procfs |
105 | <arg>' from the (gdb) prompt. For QNX6 (nto), the only valid arg | |
106 | will be a QNX node string, eg: "/net/some_node". If arg is not a | |
107 | valid QNX node, we will default to local. */ | |
61bb466e | 108 | static void |
6a3cb8e8 | 109 | procfs_open_1 (struct target_ops *ops, char *arg, int from_tty) |
61bb466e KW |
110 | { |
111 | char *nodestr; | |
112 | char *endstr; | |
113 | char buffer[50]; | |
114 | int fd, total_size; | |
115 | procfs_sysinfo *sysinfo; | |
9fe4a216 | 116 | struct cleanup *cleanups; |
61bb466e | 117 | |
6a3cb8e8 PA |
118 | /* Offer to kill previous inferiors before opening this target. */ |
119 | target_preopen (from_tty); | |
120 | ||
d737fd7f KW |
121 | nto_is_nto_target = procfs_is_nto_target; |
122 | ||
61bb466e KW |
123 | /* Set the default node used for spawning to this one, |
124 | and only override it if there is a valid arg. */ | |
125 | ||
126 | nto_procfs_node = ND_LOCAL_NODE; | |
127 | nodestr = arg ? xstrdup (arg) : arg; | |
128 | ||
129 | init_thread_list (); | |
130 | ||
131 | if (nodestr) | |
132 | { | |
133 | nto_procfs_node = netmgr_strtond (nodestr, &endstr); | |
134 | if (nto_procfs_node == -1) | |
135 | { | |
136 | if (errno == ENOTSUP) | |
137 | printf_filtered ("QNX Net Manager not found.\n"); | |
138 | printf_filtered ("Invalid QNX node %s: error %d (%s).\n", nodestr, | |
dc5dd1eb | 139 | errno, safe_strerror (errno)); |
61bb466e KW |
140 | xfree (nodestr); |
141 | nodestr = NULL; | |
142 | nto_procfs_node = ND_LOCAL_NODE; | |
143 | } | |
144 | else if (*endstr) | |
145 | { | |
146 | if (*(endstr - 1) == '/') | |
147 | *(endstr - 1) = 0; | |
148 | else | |
149 | *endstr = 0; | |
150 | } | |
151 | } | |
d737fd7f KW |
152 | snprintf (nto_procfs_path, PATH_MAX - 1, "%s%s", nodestr ? nodestr : "", |
153 | "/proc"); | |
61bb466e KW |
154 | if (nodestr) |
155 | xfree (nodestr); | |
156 | ||
157 | fd = open (nto_procfs_path, O_RDONLY); | |
158 | if (fd == -1) | |
159 | { | |
160 | printf_filtered ("Error opening %s : %d (%s)\n", nto_procfs_path, errno, | |
dc5dd1eb | 161 | safe_strerror (errno)); |
8a3fe4f8 | 162 | error (_("Invalid procfs arg")); |
61bb466e | 163 | } |
9fe4a216 | 164 | cleanups = make_cleanup_close (fd); |
61bb466e KW |
165 | |
166 | sysinfo = (void *) buffer; | |
167 | if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, sizeof buffer, 0) != EOK) | |
168 | { | |
169 | printf_filtered ("Error getting size: %d (%s)\n", errno, | |
dc5dd1eb | 170 | safe_strerror (errno)); |
8a3fe4f8 | 171 | error (_("Devctl failed.")); |
61bb466e KW |
172 | } |
173 | else | |
174 | { | |
175 | total_size = sysinfo->total_size; | |
176 | sysinfo = alloca (total_size); | |
177 | if (!sysinfo) | |
178 | { | |
179 | printf_filtered ("Memory error: %d (%s)\n", errno, | |
dc5dd1eb | 180 | safe_strerror (errno)); |
8a3fe4f8 | 181 | error (_("alloca failed.")); |
61bb466e KW |
182 | } |
183 | else | |
184 | { | |
185 | if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, total_size, 0) != EOK) | |
186 | { | |
187 | printf_filtered ("Error getting sysinfo: %d (%s)\n", errno, | |
dc5dd1eb | 188 | safe_strerror (errno)); |
8a3fe4f8 | 189 | error (_("Devctl failed.")); |
61bb466e KW |
190 | } |
191 | else | |
192 | { | |
193 | if (sysinfo->type != | |
1143fffb | 194 | nto_map_arch_to_cputype (gdbarch_bfd_arch_info |
f5656ead | 195 | (target_gdbarch ())->arch_name)) |
9fe4a216 | 196 | error (_("Invalid target CPU.")); |
61bb466e KW |
197 | } |
198 | } | |
199 | } | |
9fe4a216 | 200 | do_cleanups (cleanups); |
6a3cb8e8 PA |
201 | |
202 | inf_child_open_target (ops, arg, from_tty); | |
61bb466e KW |
203 | printf_filtered ("Debugging using %s\n", nto_procfs_path); |
204 | } | |
205 | ||
206 | static void | |
207 | procfs_set_thread (ptid_t ptid) | |
208 | { | |
209 | pid_t tid; | |
210 | ||
211 | tid = ptid_get_tid (ptid); | |
212 | devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0); | |
213 | } | |
214 | ||
215 | /* Return nonzero if the thread TH is still alive. */ | |
216 | static int | |
28439f5e | 217 | procfs_thread_alive (struct target_ops *ops, ptid_t ptid) |
61bb466e KW |
218 | { |
219 | pid_t tid; | |
745a434e AR |
220 | pid_t pid; |
221 | procfs_status status; | |
222 | int err; | |
61bb466e KW |
223 | |
224 | tid = ptid_get_tid (ptid); | |
745a434e AR |
225 | pid = ptid_get_pid (ptid); |
226 | ||
227 | if (kill (pid, 0) == -1) | |
228 | return 0; | |
229 | ||
230 | status.tid = tid; | |
231 | if ((err = devctl (ctl_fd, DCMD_PROC_TIDSTATUS, | |
232 | &status, sizeof (status), 0)) != EOK) | |
233 | return 0; | |
234 | ||
235 | /* Thread is alive or dead but not yet joined, | |
236 | or dead and there is an alive (or dead unjoined) thread with | |
237 | higher tid. | |
238 | ||
239 | If the tid is not the same as requested, requested tid is dead. */ | |
240 | return (status.tid == tid) && (status.state != STATE_DEAD); | |
241 | } | |
242 | ||
243 | static void | |
244 | update_thread_private_data_name (struct thread_info *new_thread, | |
245 | const char *newname) | |
246 | { | |
247 | int newnamelen; | |
248 | struct private_thread_info *pti; | |
249 | ||
250 | gdb_assert (newname != NULL); | |
251 | gdb_assert (new_thread != NULL); | |
252 | newnamelen = strlen (newname); | |
253 | if (!new_thread->private) | |
254 | { | |
255 | new_thread->private = xmalloc (offsetof (struct private_thread_info, | |
256 | name) | |
257 | + newnamelen + 1); | |
258 | memcpy (new_thread->private->name, newname, newnamelen + 1); | |
259 | } | |
260 | else if (strcmp (newname, new_thread->private->name) != 0) | |
261 | { | |
262 | /* Reallocate if neccessary. */ | |
263 | int oldnamelen = strlen (new_thread->private->name); | |
264 | ||
265 | if (oldnamelen < newnamelen) | |
266 | new_thread->private = xrealloc (new_thread->private, | |
267 | offsetof (struct private_thread_info, | |
268 | name) | |
269 | + newnamelen + 1); | |
270 | memcpy (new_thread->private->name, newname, newnamelen + 1); | |
271 | } | |
272 | } | |
273 | ||
274 | static void | |
275 | update_thread_private_data (struct thread_info *new_thread, | |
276 | pthread_t tid, int state, int flags) | |
277 | { | |
278 | struct private_thread_info *pti; | |
279 | procfs_info pidinfo; | |
280 | struct _thread_name *tn; | |
281 | procfs_threadctl tctl; | |
282 | ||
283 | #if _NTO_VERSION > 630 | |
284 | gdb_assert (new_thread != NULL); | |
285 | ||
286 | if (devctl (ctl_fd, DCMD_PROC_INFO, &pidinfo, | |
287 | sizeof(pidinfo), 0) != EOK) | |
288 | return; | |
289 | ||
290 | memset (&tctl, 0, sizeof (tctl)); | |
291 | tctl.cmd = _NTO_TCTL_NAME; | |
292 | tn = (struct _thread_name *) (&tctl.data); | |
293 | ||
294 | /* Fetch name for the given thread. */ | |
295 | tctl.tid = tid; | |
296 | tn->name_buf_len = sizeof (tctl.data) - sizeof (*tn); | |
297 | tn->new_name_len = -1; /* Getting, not setting. */ | |
298 | if (devctl (ctl_fd, DCMD_PROC_THREADCTL, &tctl, sizeof (tctl), NULL) != EOK) | |
299 | tn->name_buf[0] = '\0'; | |
300 | ||
301 | tn->name_buf[_NTO_THREAD_NAME_MAX] = '\0'; | |
302 | ||
303 | update_thread_private_data_name (new_thread, tn->name_buf); | |
304 | ||
305 | pti = (struct private_thread_info *) new_thread->private; | |
306 | pti->tid = tid; | |
307 | pti->state = state; | |
308 | pti->flags = flags; | |
309 | #endif /* _NTO_VERSION */ | |
61bb466e KW |
310 | } |
311 | ||
94c74239 | 312 | static void |
28439f5e | 313 | procfs_find_new_threads (struct target_ops *ops) |
61bb466e KW |
314 | { |
315 | procfs_status status; | |
316 | pid_t pid; | |
317 | ptid_t ptid; | |
745a434e AR |
318 | pthread_t tid; |
319 | struct thread_info *new_thread; | |
61bb466e KW |
320 | |
321 | if (ctl_fd == -1) | |
322 | return; | |
323 | ||
324 | pid = ptid_get_pid (inferior_ptid); | |
325 | ||
745a434e AR |
326 | status.tid = 1; |
327 | ||
328 | for (tid = 1;; ++tid) | |
61bb466e | 329 | { |
745a434e AR |
330 | if (status.tid == tid |
331 | && (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0) | |
332 | != EOK)) | |
61bb466e | 333 | break; |
745a434e AR |
334 | if (status.tid != tid) |
335 | /* The reason why this would not be equal is that devctl might have | |
336 | returned different tid, meaning the requested tid no longer exists | |
337 | (e.g. thread exited). */ | |
338 | continue; | |
339 | ptid = ptid_build (pid, 0, tid); | |
340 | new_thread = find_thread_ptid (ptid); | |
341 | if (!new_thread) | |
342 | new_thread = add_thread (ptid); | |
343 | update_thread_private_data (new_thread, tid, status.state, 0); | |
344 | status.tid++; | |
61bb466e KW |
345 | } |
346 | return; | |
347 | } | |
348 | ||
9fe4a216 TT |
349 | static void |
350 | do_closedir_cleanup (void *dir) | |
351 | { | |
352 | closedir (dir); | |
353 | } | |
354 | ||
61bb466e KW |
355 | void |
356 | procfs_pidlist (char *args, int from_tty) | |
357 | { | |
358 | DIR *dp = NULL; | |
359 | struct dirent *dirp = NULL; | |
61bb466e KW |
360 | char buf[512]; |
361 | procfs_info *pidinfo = NULL; | |
362 | procfs_debuginfo *info = NULL; | |
363 | procfs_status *status = NULL; | |
364 | pid_t num_threads = 0; | |
365 | pid_t pid; | |
366 | char name[512]; | |
9fe4a216 | 367 | struct cleanup *cleanups; |
61bb466e KW |
368 | |
369 | dp = opendir (nto_procfs_path); | |
370 | if (dp == NULL) | |
371 | { | |
dc5dd1eb | 372 | fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)", |
d737fd7f | 373 | nto_procfs_path, errno, safe_strerror (errno)); |
61bb466e KW |
374 | return; |
375 | } | |
376 | ||
9fe4a216 TT |
377 | cleanups = make_cleanup (do_closedir_cleanup, dp); |
378 | ||
61bb466e KW |
379 | /* Start scan at first pid. */ |
380 | rewinddir (dp); | |
381 | ||
382 | do | |
383 | { | |
9fe4a216 TT |
384 | int fd; |
385 | struct cleanup *inner_cleanup; | |
386 | ||
61bb466e KW |
387 | /* Get the right pid and procfs path for the pid. */ |
388 | do | |
389 | { | |
390 | dirp = readdir (dp); | |
391 | if (dirp == NULL) | |
392 | { | |
9fe4a216 | 393 | do_cleanups (cleanups); |
61bb466e KW |
394 | return; |
395 | } | |
dc5dd1eb | 396 | snprintf (buf, 511, "%s/%s/as", nto_procfs_path, dirp->d_name); |
61bb466e KW |
397 | pid = atoi (dirp->d_name); |
398 | } | |
399 | while (pid == 0); | |
400 | ||
0df8b418 | 401 | /* Open the procfs path. */ |
61bb466e KW |
402 | fd = open (buf, O_RDONLY); |
403 | if (fd == -1) | |
404 | { | |
dc5dd1eb | 405 | fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n", |
d737fd7f | 406 | buf, errno, safe_strerror (errno)); |
9fe4a216 | 407 | do_cleanups (cleanups); |
61bb466e KW |
408 | return; |
409 | } | |
9fe4a216 | 410 | inner_cleanup = make_cleanup_close (fd); |
61bb466e KW |
411 | |
412 | pidinfo = (procfs_info *) buf; | |
413 | if (devctl (fd, DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK) | |
414 | { | |
dc5dd1eb | 415 | fprintf_unfiltered (gdb_stderr, |
d737fd7f KW |
416 | "devctl DCMD_PROC_INFO failed - %d (%s)\n", |
417 | errno, safe_strerror (errno)); | |
61bb466e KW |
418 | break; |
419 | } | |
420 | num_threads = pidinfo->num_threads; | |
421 | ||
422 | info = (procfs_debuginfo *) buf; | |
423 | if (devctl (fd, DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0) != EOK) | |
424 | strcpy (name, "unavailable"); | |
425 | else | |
426 | strcpy (name, info->path); | |
427 | ||
428 | /* Collect state info on all the threads. */ | |
429 | status = (procfs_status *) buf; | |
430 | for (status->tid = 1; status->tid <= num_threads; status->tid++) | |
431 | { | |
432 | if (devctl (fd, DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0) != EOK | |
433 | && status->tid != 0) | |
434 | break; | |
435 | if (status->tid != 0) | |
436 | printf_filtered ("%s - %d/%d\n", name, pid, status->tid); | |
437 | } | |
9fe4a216 TT |
438 | |
439 | do_cleanups (inner_cleanup); | |
61bb466e KW |
440 | } |
441 | while (dirp != NULL); | |
442 | ||
9fe4a216 | 443 | do_cleanups (cleanups); |
61bb466e KW |
444 | return; |
445 | } | |
446 | ||
447 | void | |
448 | procfs_meminfo (char *args, int from_tty) | |
449 | { | |
450 | procfs_mapinfo *mapinfos = NULL; | |
451 | static int num_mapinfos = 0; | |
452 | procfs_mapinfo *mapinfo_p, *mapinfo_p2; | |
453 | int flags = ~0, err, num, i, j; | |
454 | ||
455 | struct | |
456 | { | |
457 | procfs_debuginfo info; | |
458 | char buff[_POSIX_PATH_MAX]; | |
459 | } map; | |
460 | ||
461 | struct info | |
462 | { | |
463 | unsigned addr; | |
464 | unsigned size; | |
465 | unsigned flags; | |
466 | unsigned debug_vaddr; | |
467 | unsigned long long offset; | |
468 | }; | |
469 | ||
470 | struct printinfo | |
471 | { | |
472 | unsigned long long ino; | |
473 | unsigned dev; | |
474 | struct info text; | |
475 | struct info data; | |
476 | char name[256]; | |
477 | } printme; | |
478 | ||
479 | /* Get the number of map entrys. */ | |
480 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num); | |
481 | if (err != EOK) | |
482 | { | |
d737fd7f KW |
483 | printf ("failed devctl num mapinfos - %d (%s)\n", err, |
484 | safe_strerror (err)); | |
61bb466e KW |
485 | return; |
486 | } | |
487 | ||
488 | mapinfos = xmalloc (num * sizeof (procfs_mapinfo)); | |
489 | ||
490 | num_mapinfos = num; | |
491 | mapinfo_p = mapinfos; | |
492 | ||
493 | /* Fill the map entrys. */ | |
494 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, mapinfo_p, num | |
495 | * sizeof (procfs_mapinfo), &num); | |
496 | if (err != EOK) | |
497 | { | |
5483d879 | 498 | printf ("failed devctl mapinfos - %d (%s)\n", err, safe_strerror (err)); |
61bb466e KW |
499 | xfree (mapinfos); |
500 | return; | |
501 | } | |
502 | ||
503 | num = min (num, num_mapinfos); | |
504 | ||
505 | /* Run through the list of mapinfos, and store the data and text info | |
506 | so we can print it at the bottom of the loop. */ | |
507 | for (mapinfo_p = mapinfos, i = 0; i < num; i++, mapinfo_p++) | |
508 | { | |
509 | if (!(mapinfo_p->flags & flags)) | |
510 | mapinfo_p->ino = 0; | |
511 | ||
512 | if (mapinfo_p->ino == 0) /* Already visited. */ | |
513 | continue; | |
514 | ||
515 | map.info.vaddr = mapinfo_p->vaddr; | |
516 | ||
517 | err = devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
518 | if (err != EOK) | |
519 | continue; | |
520 | ||
521 | memset (&printme, 0, sizeof printme); | |
522 | printme.dev = mapinfo_p->dev; | |
523 | printme.ino = mapinfo_p->ino; | |
524 | printme.text.addr = mapinfo_p->vaddr; | |
525 | printme.text.size = mapinfo_p->size; | |
526 | printme.text.flags = mapinfo_p->flags; | |
527 | printme.text.offset = mapinfo_p->offset; | |
528 | printme.text.debug_vaddr = map.info.vaddr; | |
529 | strcpy (printme.name, map.info.path); | |
530 | ||
531 | /* Check for matching data. */ | |
532 | for (mapinfo_p2 = mapinfos, j = 0; j < num; j++, mapinfo_p2++) | |
533 | { | |
534 | if (mapinfo_p2->vaddr != mapinfo_p->vaddr | |
535 | && mapinfo_p2->ino == mapinfo_p->ino | |
536 | && mapinfo_p2->dev == mapinfo_p->dev) | |
537 | { | |
538 | map.info.vaddr = mapinfo_p2->vaddr; | |
539 | err = | |
540 | devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
541 | if (err != EOK) | |
542 | continue; | |
543 | ||
544 | if (strcmp (map.info.path, printme.name)) | |
545 | continue; | |
546 | ||
547 | /* Lower debug_vaddr is always text, if nessessary, swap. */ | |
548 | if ((int) map.info.vaddr < (int) printme.text.debug_vaddr) | |
549 | { | |
550 | memcpy (&(printme.data), &(printme.text), | |
551 | sizeof (printme.data)); | |
552 | printme.text.addr = mapinfo_p2->vaddr; | |
553 | printme.text.size = mapinfo_p2->size; | |
554 | printme.text.flags = mapinfo_p2->flags; | |
555 | printme.text.offset = mapinfo_p2->offset; | |
556 | printme.text.debug_vaddr = map.info.vaddr; | |
557 | } | |
558 | else | |
559 | { | |
560 | printme.data.addr = mapinfo_p2->vaddr; | |
561 | printme.data.size = mapinfo_p2->size; | |
562 | printme.data.flags = mapinfo_p2->flags; | |
563 | printme.data.offset = mapinfo_p2->offset; | |
564 | printme.data.debug_vaddr = map.info.vaddr; | |
565 | } | |
566 | mapinfo_p2->ino = 0; | |
567 | } | |
568 | } | |
569 | mapinfo_p->ino = 0; | |
570 | ||
571 | printf_filtered ("%s\n", printme.name); | |
572 | printf_filtered ("\ttext=%08x bytes @ 0x%08x\n", printme.text.size, | |
573 | printme.text.addr); | |
574 | printf_filtered ("\t\tflags=%08x\n", printme.text.flags); | |
575 | printf_filtered ("\t\tdebug=%08x\n", printme.text.debug_vaddr); | |
2244ba2e | 576 | printf_filtered ("\t\toffset=%s\n", phex (printme.text.offset, 8)); |
61bb466e KW |
577 | if (printme.data.size) |
578 | { | |
579 | printf_filtered ("\tdata=%08x bytes @ 0x%08x\n", printme.data.size, | |
580 | printme.data.addr); | |
581 | printf_filtered ("\t\tflags=%08x\n", printme.data.flags); | |
582 | printf_filtered ("\t\tdebug=%08x\n", printme.data.debug_vaddr); | |
2244ba2e | 583 | printf_filtered ("\t\toffset=%s\n", phex (printme.data.offset, 8)); |
61bb466e KW |
584 | } |
585 | printf_filtered ("\tdev=0x%x\n", printme.dev); | |
586 | printf_filtered ("\tino=0x%x\n", (unsigned int) printme.ino); | |
587 | } | |
588 | xfree (mapinfos); | |
589 | return; | |
590 | } | |
591 | ||
592 | /* Print status information about what we're accessing. */ | |
593 | static void | |
594 | procfs_files_info (struct target_ops *ignore) | |
595 | { | |
181e7f93 PA |
596 | struct inferior *inf = current_inferior (); |
597 | ||
61bb466e | 598 | printf_unfiltered ("\tUsing the running image of %s %s via %s.\n", |
3fdfcbf1 | 599 | inf->attach_flag ? "attached" : "child", |
61bb466e KW |
600 | target_pid_to_str (inferior_ptid), nto_procfs_path); |
601 | } | |
602 | ||
61bb466e KW |
603 | /* Attach to process PID, then initialize for debugging it. */ |
604 | static void | |
c0939df1 | 605 | procfs_attach (struct target_ops *ops, const char *args, int from_tty) |
61bb466e KW |
606 | { |
607 | char *exec_file; | |
608 | int pid; | |
181e7f93 | 609 | struct inferior *inf; |
61bb466e | 610 | |
74164c56 | 611 | pid = parse_pid_to_attach (args); |
61bb466e KW |
612 | |
613 | if (pid == getpid ()) | |
8a3fe4f8 | 614 | error (_("Attaching GDB to itself is not a good idea...")); |
61bb466e KW |
615 | |
616 | if (from_tty) | |
617 | { | |
618 | exec_file = (char *) get_exec_file (0); | |
619 | ||
620 | if (exec_file) | |
621 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
622 | target_pid_to_str (pid_to_ptid (pid))); | |
623 | else | |
624 | printf_unfiltered ("Attaching to %s\n", | |
625 | target_pid_to_str (pid_to_ptid (pid))); | |
626 | ||
627 | gdb_flush (gdb_stdout); | |
628 | } | |
629 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
6c95b8df PA |
630 | inf = current_inferior (); |
631 | inferior_appeared (inf, pid); | |
181e7f93 | 632 | inf->attach_flag = 1; |
7f9f62ba | 633 | |
6a3cb8e8 PA |
634 | if (!target_is_pushed (ops)) |
635 | push_target (ops); | |
7f9f62ba | 636 | |
28439f5e | 637 | procfs_find_new_threads (ops); |
61bb466e KW |
638 | } |
639 | ||
640 | static void | |
f045800c | 641 | procfs_post_attach (struct target_ops *self, pid_t pid) |
61bb466e | 642 | { |
61bb466e | 643 | if (exec_bfd) |
268a4a75 | 644 | solib_create_inferior_hook (0); |
61bb466e KW |
645 | } |
646 | ||
647 | static ptid_t | |
648 | do_attach (ptid_t ptid) | |
649 | { | |
650 | procfs_status status; | |
651 | struct sigevent event; | |
dc5dd1eb | 652 | char path[PATH_MAX]; |
61bb466e | 653 | |
dfd4cc63 LM |
654 | snprintf (path, PATH_MAX - 1, "%s/%d/as", nto_procfs_path, |
655 | ptid_get_pid (ptid)); | |
61bb466e KW |
656 | ctl_fd = open (path, O_RDWR); |
657 | if (ctl_fd == -1) | |
8a3fe4f8 | 658 | error (_("Couldn't open proc file %s, error %d (%s)"), path, errno, |
dc5dd1eb | 659 | safe_strerror (errno)); |
61bb466e | 660 | if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK) |
8a3fe4f8 | 661 | error (_("Couldn't stop process")); |
61bb466e KW |
662 | |
663 | /* Define a sigevent for process stopped notification. */ | |
664 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
665 | event.sigev_signo = SIGUSR1; | |
666 | event.sigev_code = 0; | |
667 | event.sigev_value.sival_ptr = NULL; | |
668 | event.sigev_priority = -1; | |
669 | devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0); | |
670 | ||
671 | if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK | |
672 | && status.flags & _DEBUG_FLAG_STOPPED) | |
dfd4cc63 | 673 | SignalKill (nto_node (), ptid_get_pid (ptid), 0, SIGCONT, 0, 0); |
61bb466e | 674 | nto_init_solib_absolute_prefix (); |
dfd4cc63 | 675 | return ptid_build (ptid_get_pid (ptid), 0, status.tid); |
61bb466e KW |
676 | } |
677 | ||
678 | /* Ask the user what to do when an interrupt is received. */ | |
679 | static void | |
dc5dd1eb | 680 | interrupt_query (void) |
61bb466e KW |
681 | { |
682 | target_terminal_ours (); | |
683 | ||
9e2f0ad4 HZ |
684 | if (query (_("Interrupted while waiting for the program.\n\ |
685 | Give up (and stop debugging it)? "))) | |
61bb466e KW |
686 | { |
687 | target_mourn_inferior (); | |
039e3c22 | 688 | quit (); |
61bb466e KW |
689 | } |
690 | ||
691 | target_terminal_inferior (); | |
692 | } | |
693 | ||
694 | /* The user typed ^C twice. */ | |
695 | static void | |
696 | nto_interrupt_twice (int signo) | |
697 | { | |
698 | signal (signo, ofunc); | |
699 | interrupt_query (); | |
700 | signal (signo, nto_interrupt_twice); | |
701 | } | |
702 | ||
703 | static void | |
704 | nto_interrupt (int signo) | |
705 | { | |
706 | /* If this doesn't work, try more severe steps. */ | |
707 | signal (signo, nto_interrupt_twice); | |
708 | ||
f9c72d52 | 709 | target_stop (inferior_ptid); |
61bb466e KW |
710 | } |
711 | ||
712 | static ptid_t | |
117de6a9 | 713 | procfs_wait (struct target_ops *ops, |
47608cb1 | 714 | ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
61bb466e KW |
715 | { |
716 | sigset_t set; | |
717 | siginfo_t info; | |
718 | procfs_status status; | |
719 | static int exit_signo = 0; /* To track signals that cause termination. */ | |
720 | ||
721 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
722 | ||
723 | if (ptid_equal (inferior_ptid, null_ptid)) | |
724 | { | |
725 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 726 | ourstatus->value.sig = GDB_SIGNAL_0; |
61bb466e KW |
727 | exit_signo = 0; |
728 | return null_ptid; | |
729 | } | |
730 | ||
731 | sigemptyset (&set); | |
732 | sigaddset (&set, SIGUSR1); | |
733 | ||
734 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
735 | while (!(status.flags & _DEBUG_FLAG_ISTOP)) | |
736 | { | |
737 | ofunc = (void (*)()) signal (SIGINT, nto_interrupt); | |
738 | sigwaitinfo (&set, &info); | |
739 | signal (SIGINT, ofunc); | |
740 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
741 | } | |
742 | ||
743 | if (status.flags & _DEBUG_FLAG_SSTEP) | |
744 | { | |
745 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 746 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
747 | } |
748 | /* Was it a breakpoint? */ | |
749 | else if (status.flags & _DEBUG_FLAG_TRACE) | |
750 | { | |
751 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 752 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
753 | } |
754 | else if (status.flags & _DEBUG_FLAG_ISTOP) | |
755 | { | |
756 | switch (status.why) | |
757 | { | |
758 | case _DEBUG_WHY_SIGNALLED: | |
759 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
760 | ourstatus->value.sig = | |
2ea28649 | 761 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
762 | exit_signo = 0; |
763 | break; | |
764 | case _DEBUG_WHY_FAULTED: | |
765 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
766 | if (status.info.si_signo == SIGTRAP) | |
767 | { | |
768 | ourstatus->value.sig = 0; | |
769 | exit_signo = 0; | |
770 | } | |
771 | else | |
772 | { | |
773 | ourstatus->value.sig = | |
2ea28649 | 774 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
775 | exit_signo = ourstatus->value.sig; |
776 | } | |
777 | break; | |
778 | ||
779 | case _DEBUG_WHY_TERMINATED: | |
780 | { | |
781 | int waitval = 0; | |
782 | ||
dfd4cc63 | 783 | waitpid (ptid_get_pid (inferior_ptid), &waitval, WNOHANG); |
61bb466e KW |
784 | if (exit_signo) |
785 | { | |
786 | /* Abnormal death. */ | |
787 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
788 | ourstatus->value.sig = exit_signo; | |
789 | } | |
790 | else | |
791 | { | |
792 | /* Normal death. */ | |
793 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
794 | ourstatus->value.integer = WEXITSTATUS (waitval); | |
795 | } | |
796 | exit_signo = 0; | |
797 | break; | |
798 | } | |
799 | ||
800 | case _DEBUG_WHY_REQUESTED: | |
801 | /* We are assuming a requested stop is due to a SIGINT. */ | |
802 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 803 | ourstatus->value.sig = GDB_SIGNAL_INT; |
61bb466e KW |
804 | exit_signo = 0; |
805 | break; | |
806 | } | |
807 | } | |
808 | ||
a6a7f2a5 | 809 | return ptid_build (status.pid, 0, status.tid); |
61bb466e KW |
810 | } |
811 | ||
812 | /* Read the current values of the inferior's registers, both the | |
813 | general register set and floating point registers (if supported) | |
814 | and update gdb's idea of their current values. */ | |
815 | static void | |
28439f5e PA |
816 | procfs_fetch_registers (struct target_ops *ops, |
817 | struct regcache *regcache, int regno) | |
61bb466e KW |
818 | { |
819 | union | |
820 | { | |
821 | procfs_greg greg; | |
822 | procfs_fpreg fpreg; | |
823 | procfs_altreg altreg; | |
824 | } | |
825 | reg; | |
826 | int regsize; | |
827 | ||
828 | procfs_set_thread (inferior_ptid); | |
829 | if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK) | |
56be3814 | 830 | nto_supply_gregset (regcache, (char *) ®.greg); |
61bb466e KW |
831 | if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size) |
832 | == EOK) | |
56be3814 | 833 | nto_supply_fpregset (regcache, (char *) ®.fpreg); |
61bb466e KW |
834 | if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size) |
835 | == EOK) | |
56be3814 | 836 | nto_supply_altregset (regcache, (char *) ®.altreg); |
61bb466e KW |
837 | } |
838 | ||
9d46c4e5 PA |
839 | /* Helper for procfs_xfer_partial that handles memory transfers. |
840 | Arguments are like target_xfer_partial. */ | |
61bb466e | 841 | |
9d46c4e5 PA |
842 | static enum target_xfer_status |
843 | procfs_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, | |
844 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
61bb466e | 845 | { |
9d46c4e5 PA |
846 | int nbytes; |
847 | ||
848 | if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) != (off_t) memaddr) | |
849 | return TARGET_XFER_E_IO; | |
850 | ||
851 | if (writebuf != NULL) | |
852 | nbytes = write (ctl_fd, writebuf, len); | |
853 | else | |
854 | nbytes = read (ctl_fd, readbuf, len); | |
855 | if (nbytes <= 0) | |
856 | return TARGET_XFER_E_IO; | |
857 | *xfered_len = nbytes; | |
858 | return TARGET_XFER_OK; | |
859 | } | |
860 | ||
861 | /* Target to_xfer_partial implementation. */ | |
61bb466e | 862 | |
9d46c4e5 PA |
863 | static enum target_xfer_status |
864 | procfs_xfer_partial (struct target_ops *ops, enum target_object object, | |
865 | const char *annex, gdb_byte *readbuf, | |
866 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
867 | ULONGEST *xfered_len) | |
868 | { | |
869 | switch (object) | |
61bb466e | 870 | { |
9d46c4e5 PA |
871 | case TARGET_OBJECT_MEMORY: |
872 | return procfs_xfer_memory (readbuf, writebuf, offset, len, xfered_len); | |
873 | default: | |
874 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
875 | readbuf, writebuf, offset, len); | |
61bb466e | 876 | } |
61bb466e KW |
877 | } |
878 | ||
879 | /* Take a program previously attached to and detaches it. | |
880 | The program resumes execution and will no longer stop | |
881 | on signals, etc. We'd better not have left any breakpoints | |
882 | in the program or it'll die when it hits one. */ | |
883 | static void | |
52554a0e | 884 | procfs_detach (struct target_ops *ops, const char *args, int from_tty) |
61bb466e KW |
885 | { |
886 | int siggnal = 0; | |
7f9f62ba | 887 | int pid; |
61bb466e KW |
888 | |
889 | if (from_tty) | |
890 | { | |
891 | char *exec_file = get_exec_file (0); | |
892 | if (exec_file == 0) | |
893 | exec_file = ""; | |
894 | printf_unfiltered ("Detaching from program: %s %s\n", | |
895 | exec_file, target_pid_to_str (inferior_ptid)); | |
896 | gdb_flush (gdb_stdout); | |
897 | } | |
898 | if (args) | |
899 | siggnal = atoi (args); | |
900 | ||
901 | if (siggnal) | |
dfd4cc63 | 902 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, siggnal, 0, 0); |
61bb466e KW |
903 | |
904 | close (ctl_fd); | |
905 | ctl_fd = -1; | |
7f9f62ba PA |
906 | |
907 | pid = ptid_get_pid (inferior_ptid); | |
61bb466e | 908 | inferior_ptid = null_ptid; |
7f9f62ba PA |
909 | detach_inferior (pid); |
910 | init_thread_list (); | |
6a3cb8e8 | 911 | inf_child_maybe_unpush_target (ops); |
61bb466e KW |
912 | } |
913 | ||
914 | static int | |
915 | procfs_breakpoint (CORE_ADDR addr, int type, int size) | |
916 | { | |
917 | procfs_break brk; | |
918 | ||
919 | brk.type = type; | |
920 | brk.addr = addr; | |
921 | brk.size = size; | |
922 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
923 | if (errno != EOK) | |
924 | return 1; | |
925 | return 0; | |
926 | } | |
927 | ||
928 | static int | |
3db08215 | 929 | procfs_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 930 | struct bp_target_info *bp_tgt) |
61bb466e | 931 | { |
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 | { |
8181d85f DJ |
946 | return procfs_breakpoint (bp_tgt->placed_address, |
947 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0); | |
61bb466e KW |
948 | } |
949 | ||
950 | static int | |
8476dc92 TT |
951 | procfs_remove_hw_breakpoint (struct target_ops *self, |
952 | struct gdbarch *gdbarch, | |
a6d9a66e | 953 | struct bp_target_info *bp_tgt) |
61bb466e | 954 | { |
8181d85f DJ |
955 | return procfs_breakpoint (bp_tgt->placed_address, |
956 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1); | |
61bb466e KW |
957 | } |
958 | ||
959 | static void | |
28439f5e | 960 | procfs_resume (struct target_ops *ops, |
2ea28649 | 961 | ptid_t ptid, int step, enum gdb_signal signo) |
61bb466e KW |
962 | { |
963 | int signal_to_pass; | |
964 | procfs_status status; | |
14ef7606 | 965 | sigset_t *run_fault = (sigset_t *) (void *) &run.fault; |
61bb466e KW |
966 | |
967 | if (ptid_equal (inferior_ptid, null_ptid)) | |
968 | return; | |
969 | ||
970 | procfs_set_thread (ptid_equal (ptid, minus_one_ptid) ? inferior_ptid : | |
971 | ptid); | |
972 | ||
973 | run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE; | |
974 | if (step) | |
975 | run.flags |= _DEBUG_RUN_STEP; | |
976 | ||
14ef7606 AR |
977 | sigemptyset (run_fault); |
978 | sigaddset (run_fault, FLTBPT); | |
979 | sigaddset (run_fault, FLTTRACE); | |
980 | sigaddset (run_fault, FLTILL); | |
981 | sigaddset (run_fault, FLTPRIV); | |
982 | sigaddset (run_fault, FLTBOUNDS); | |
983 | sigaddset (run_fault, FLTIOVF); | |
984 | sigaddset (run_fault, FLTIZDIV); | |
985 | sigaddset (run_fault, FLTFPE); | |
61bb466e | 986 | /* Peter V will be changing this at some point. */ |
14ef7606 | 987 | sigaddset (run_fault, FLTPAGE); |
61bb466e KW |
988 | |
989 | run.flags |= _DEBUG_RUN_ARM; | |
990 | ||
2ea28649 | 991 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
992 | |
993 | if (signal_to_pass) | |
994 | { | |
995 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
2ea28649 | 996 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
997 | if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED)) |
998 | { | |
999 | if (signal_to_pass != status.info.si_signo) | |
1000 | { | |
dfd4cc63 | 1001 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, |
d737fd7f | 1002 | signal_to_pass, 0, 0); |
61bb466e KW |
1003 | run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG; |
1004 | } | |
0df8b418 | 1005 | else /* Let it kill the program without telling us. */ |
61bb466e KW |
1006 | sigdelset (&run.trace, signal_to_pass); |
1007 | } | |
1008 | } | |
1009 | else | |
1010 | run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT; | |
1011 | ||
1012 | errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0); | |
1013 | if (errno != EOK) | |
1014 | { | |
9b20d036 | 1015 | perror (_("run error!\n")); |
61bb466e KW |
1016 | return; |
1017 | } | |
1018 | } | |
1019 | ||
1020 | static void | |
136d6dae | 1021 | procfs_mourn_inferior (struct target_ops *ops) |
61bb466e KW |
1022 | { |
1023 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
1024 | { | |
dfd4cc63 | 1025 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, SIGKILL, 0, 0); |
61bb466e KW |
1026 | close (ctl_fd); |
1027 | } | |
1028 | inferior_ptid = null_ptid; | |
1029 | init_thread_list (); | |
c1ee2fb3 | 1030 | inf_child_mourn_inferior (ops); |
61bb466e KW |
1031 | } |
1032 | ||
1033 | /* This function breaks up an argument string into an argument | |
1034 | vector suitable for passing to execvp(). | |
1035 | E.g., on "run a b c d" this routine would get as input | |
1036 | the string "a b c d", and as output it would fill in argv with | |
1037 | the four arguments "a", "b", "c", "d". The only additional | |
1038 | functionality is simple quoting. The gdb command: | |
1039 | run a "b c d" f | |
1040 | will fill in argv with the three args "a", "b c d", "e". */ | |
1041 | static void | |
1042 | breakup_args (char *scratch, char **argv) | |
1043 | { | |
1044 | char *pp, *cp = scratch; | |
1045 | char quoting = 0; | |
1046 | ||
1047 | for (;;) | |
1048 | { | |
1049 | /* Scan past leading separators. */ | |
1050 | quoting = 0; | |
1051 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') | |
1052 | cp++; | |
1053 | ||
1054 | /* Break if at end of string. */ | |
1055 | if (*cp == '\0') | |
1056 | break; | |
1057 | ||
1058 | /* Take an arg. */ | |
1059 | if (*cp == '"') | |
1060 | { | |
1061 | cp++; | |
1062 | quoting = strchr (cp, '"') ? 1 : 0; | |
1063 | } | |
1064 | ||
1065 | *argv++ = cp; | |
1066 | ||
1067 | /* Scan for next arg separator. */ | |
1068 | pp = cp; | |
1069 | if (quoting) | |
1070 | cp = strchr (pp, '"'); | |
1071 | if ((cp == NULL) || (!quoting)) | |
1072 | cp = strchr (pp, ' '); | |
1073 | if (cp == NULL) | |
1074 | cp = strchr (pp, '\t'); | |
1075 | if (cp == NULL) | |
1076 | cp = strchr (pp, '\n'); | |
1077 | ||
1078 | /* No separators => end of string => break. */ | |
1079 | if (cp == NULL) | |
1080 | { | |
1081 | pp = cp; | |
1082 | break; | |
1083 | } | |
1084 | ||
1085 | /* Replace the separator with a terminator. */ | |
1086 | *cp++ = '\0'; | |
1087 | } | |
1088 | ||
1089 | /* Execv requires a null-terminated arg vector. */ | |
1090 | *argv = NULL; | |
1091 | } | |
1092 | ||
1093 | static void | |
136d6dae VP |
1094 | procfs_create_inferior (struct target_ops *ops, char *exec_file, |
1095 | char *allargs, char **env, int from_tty) | |
61bb466e KW |
1096 | { |
1097 | struct inheritance inherit; | |
1098 | pid_t pid; | |
1099 | int flags, errn; | |
1100 | char **argv, *args; | |
3cb3b8df | 1101 | const char *in = "", *out = "", *err = ""; |
61bb466e KW |
1102 | int fd, fds[3]; |
1103 | sigset_t set; | |
3cb3b8df | 1104 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
3fdfcbf1 | 1105 | struct inferior *inf; |
61bb466e KW |
1106 | |
1107 | argv = xmalloc (((strlen (allargs) + 1) / (unsigned) 2 + 2) * | |
1108 | sizeof (*argv)); | |
1109 | argv[0] = get_exec_file (1); | |
1110 | if (!argv[0]) | |
1111 | { | |
1112 | if (exec_file) | |
1113 | argv[0] = exec_file; | |
1114 | else | |
1115 | return; | |
1116 | } | |
1117 | ||
1118 | args = xstrdup (allargs); | |
1119 | breakup_args (args, exec_file ? &argv[1] : &argv[0]); | |
1120 | ||
1121 | argv = nto_parse_redirection (argv, &in, &out, &err); | |
1122 | ||
1123 | fds[0] = STDIN_FILENO; | |
1124 | fds[1] = STDOUT_FILENO; | |
1125 | fds[2] = STDERR_FILENO; | |
1126 | ||
1127 | /* If the user specified I/O via gdb's --tty= arg, use it, but only | |
1128 | if the i/o is not also being specified via redirection. */ | |
1129 | if (inferior_io_terminal) | |
1130 | { | |
1131 | if (!in[0]) | |
1132 | in = inferior_io_terminal; | |
1133 | if (!out[0]) | |
1134 | out = inferior_io_terminal; | |
1135 | if (!err[0]) | |
1136 | err = inferior_io_terminal; | |
1137 | } | |
1138 | ||
1139 | if (in[0]) | |
1140 | { | |
1141 | fd = open (in, O_RDONLY); | |
1142 | if (fd == -1) | |
1143 | perror (in); | |
1144 | else | |
1145 | fds[0] = fd; | |
1146 | } | |
1147 | if (out[0]) | |
1148 | { | |
1149 | fd = open (out, O_WRONLY); | |
1150 | if (fd == -1) | |
1151 | perror (out); | |
1152 | else | |
1153 | fds[1] = fd; | |
1154 | } | |
1155 | if (err[0]) | |
1156 | { | |
1157 | fd = open (err, O_WRONLY); | |
1158 | if (fd == -1) | |
1159 | perror (err); | |
1160 | else | |
1161 | fds[2] = fd; | |
1162 | } | |
1163 | ||
1164 | /* Clear any pending SIGUSR1's but keep the behavior the same. */ | |
1165 | signal (SIGUSR1, signal (SIGUSR1, SIG_IGN)); | |
1166 | ||
1167 | sigemptyset (&set); | |
1168 | sigaddset (&set, SIGUSR1); | |
1169 | sigprocmask (SIG_UNBLOCK, &set, NULL); | |
1170 | ||
1171 | memset (&inherit, 0, sizeof (inherit)); | |
1172 | ||
1173 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0) | |
1174 | { | |
d737fd7f | 1175 | inherit.nd = nto_node (); |
61bb466e KW |
1176 | inherit.flags |= SPAWN_SETND; |
1177 | inherit.flags &= ~SPAWN_EXEC; | |
1178 | } | |
1179 | inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD; | |
1180 | inherit.pgroup = SPAWN_NEWPGROUP; | |
1181 | pid = spawnp (argv[0], 3, fds, &inherit, argv, | |
1182 | ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0); | |
1183 | xfree (args); | |
1184 | ||
1185 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1186 | ||
1187 | if (pid == -1) | |
8a3fe4f8 | 1188 | error (_("Error spawning %s: %d (%s)"), argv[0], errno, |
d737fd7f | 1189 | safe_strerror (errno)); |
61bb466e KW |
1190 | |
1191 | if (fds[0] != STDIN_FILENO) | |
1192 | close (fds[0]); | |
1193 | if (fds[1] != STDOUT_FILENO) | |
1194 | close (fds[1]); | |
1195 | if (fds[2] != STDERR_FILENO) | |
1196 | close (fds[2]); | |
1197 | ||
1198 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
28439f5e | 1199 | procfs_find_new_threads (ops); |
61bb466e | 1200 | |
6c95b8df PA |
1201 | inf = current_inferior (); |
1202 | inferior_appeared (inf, pid); | |
3fdfcbf1 | 1203 | inf->attach_flag = 0; |
7f9f62ba | 1204 | |
61bb466e KW |
1205 | flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */ |
1206 | errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0); | |
1207 | if (errn != EOK) | |
1208 | { | |
1209 | /* FIXME: expected warning? */ | |
1210 | /* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n", | |
1211 | errn, strerror(errn) ); */ | |
1212 | } | |
6a3cb8e8 PA |
1213 | if (!target_is_pushed (ops)) |
1214 | push_target (ops); | |
61bb466e KW |
1215 | target_terminal_init (); |
1216 | ||
61bb466e KW |
1217 | if (exec_bfd != NULL |
1218 | || (symfile_objfile != NULL && symfile_objfile->obfd != NULL)) | |
268a4a75 | 1219 | solib_create_inferior_hook (0); |
61bb466e KW |
1220 | } |
1221 | ||
1222 | static void | |
1eab8a48 | 1223 | procfs_stop (struct target_ops *self, ptid_t ptid) |
61bb466e KW |
1224 | { |
1225 | devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0); | |
1226 | } | |
1227 | ||
1228 | static void | |
7d85a9c0 | 1229 | procfs_kill_inferior (struct target_ops *ops) |
61bb466e KW |
1230 | { |
1231 | target_mourn_inferior (); | |
1232 | } | |
1233 | ||
61bb466e KW |
1234 | /* Fill buf with regset and return devctl cmd to do the setting. Return |
1235 | -1 if we fail to get the regset. Store size of regset in regsize. */ | |
1236 | static int | |
1237 | get_regset (int regset, char *buf, int bufsize, int *regsize) | |
1238 | { | |
1239 | int dev_get, dev_set; | |
1240 | switch (regset) | |
1241 | { | |
1242 | case NTO_REG_GENERAL: | |
1243 | dev_get = DCMD_PROC_GETGREG; | |
1244 | dev_set = DCMD_PROC_SETGREG; | |
1245 | break; | |
1246 | ||
1247 | case NTO_REG_FLOAT: | |
1248 | dev_get = DCMD_PROC_GETFPREG; | |
1249 | dev_set = DCMD_PROC_SETFPREG; | |
1250 | break; | |
1251 | ||
1252 | case NTO_REG_ALT: | |
1253 | dev_get = DCMD_PROC_GETALTREG; | |
1254 | dev_set = DCMD_PROC_SETALTREG; | |
1255 | break; | |
1256 | ||
1257 | case NTO_REG_SYSTEM: | |
1258 | default: | |
1259 | return -1; | |
1260 | } | |
97c44116 | 1261 | if (devctl (ctl_fd, dev_get, buf, bufsize, regsize) != EOK) |
61bb466e KW |
1262 | return -1; |
1263 | ||
1264 | return dev_set; | |
1265 | } | |
1266 | ||
1267 | void | |
28439f5e PA |
1268 | procfs_store_registers (struct target_ops *ops, |
1269 | struct regcache *regcache, int regno) | |
61bb466e KW |
1270 | { |
1271 | union | |
1272 | { | |
1273 | procfs_greg greg; | |
1274 | procfs_fpreg fpreg; | |
1275 | procfs_altreg altreg; | |
1276 | } | |
1277 | reg; | |
1278 | unsigned off; | |
1279 | int len, regset, regsize, dev_set, err; | |
1280 | char *data; | |
1281 | ||
1282 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1283 | return; | |
1284 | procfs_set_thread (inferior_ptid); | |
1285 | ||
1286 | if (regno == -1) | |
1287 | { | |
1288 | for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++) | |
1289 | { | |
1290 | dev_set = get_regset (regset, (char *) ®, | |
1291 | sizeof (reg), ®size); | |
1292 | if (dev_set == -1) | |
1293 | continue; | |
1294 | ||
56be3814 | 1295 | if (nto_regset_fill (regcache, regset, (char *) ®) == -1) |
61bb466e KW |
1296 | continue; |
1297 | ||
1298 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1299 | if (err != EOK) | |
1300 | fprintf_unfiltered (gdb_stderr, | |
1301 | "Warning unable to write regset %d: %s\n", | |
dc5dd1eb | 1302 | regno, safe_strerror (err)); |
61bb466e KW |
1303 | } |
1304 | } | |
1305 | else | |
1306 | { | |
1307 | regset = nto_regset_id (regno); | |
1308 | if (regset == -1) | |
1309 | return; | |
1310 | ||
1311 | dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size); | |
1312 | if (dev_set == -1) | |
1313 | return; | |
1314 | ||
60441ab9 UW |
1315 | len = nto_register_area (get_regcache_arch (regcache), |
1316 | regno, regset, &off); | |
61bb466e KW |
1317 | |
1318 | if (len < 1) | |
1319 | return; | |
1320 | ||
56be3814 | 1321 | regcache_raw_collect (regcache, regno, (char *) ® + off); |
61bb466e KW |
1322 | |
1323 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1324 | if (err != EOK) | |
1325 | fprintf_unfiltered (gdb_stderr, | |
1326 | "Warning unable to write regset %d: %s\n", regno, | |
dc5dd1eb | 1327 | safe_strerror (err)); |
61bb466e KW |
1328 | } |
1329 | } | |
1330 | ||
2455069d UW |
1331 | /* Set list of signals to be handled in the target. */ |
1332 | ||
61bb466e | 1333 | static void |
94bedb42 TT |
1334 | procfs_pass_signals (struct target_ops *self, |
1335 | int numsigs, unsigned char *pass_signals) | |
61bb466e KW |
1336 | { |
1337 | int signo; | |
1338 | ||
2455069d UW |
1339 | sigfillset (&run.trace); |
1340 | ||
61bb466e KW |
1341 | for (signo = 1; signo < NSIG; signo++) |
1342 | { | |
2ea28649 | 1343 | int target_signo = gdb_signal_from_host (signo); |
2455069d UW |
1344 | if (target_signo < numsigs && pass_signals[target_signo]) |
1345 | sigdelset (&run.trace, signo); | |
61bb466e KW |
1346 | } |
1347 | } | |
1348 | ||
61bb466e KW |
1349 | static struct tidinfo * |
1350 | procfs_thread_info (pid_t pid, short tid) | |
1351 | { | |
1352 | /* NYI */ | |
1353 | return NULL; | |
1354 | } | |
1355 | ||
94c74239 | 1356 | static char * |
117de6a9 | 1357 | procfs_pid_to_str (struct target_ops *ops, ptid_t ptid) |
61bb466e KW |
1358 | { |
1359 | static char buf[1024]; | |
1360 | int pid, tid, n; | |
1361 | struct tidinfo *tip; | |
1362 | ||
1363 | pid = ptid_get_pid (ptid); | |
1364 | tid = ptid_get_tid (ptid); | |
1365 | ||
dc5dd1eb | 1366 | n = snprintf (buf, 1023, "process %d", pid); |
61bb466e KW |
1367 | |
1368 | #if 0 /* NYI */ | |
1369 | tip = procfs_thread_info (pid, tid); | |
1370 | if (tip != NULL) | |
dc5dd1eb | 1371 | snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state); |
61bb466e KW |
1372 | #endif |
1373 | ||
1374 | return buf; | |
1375 | } | |
1376 | ||
132f8e03 PA |
1377 | /* to_can_run implementation for "target procfs". Note this really |
1378 | means "can this target be the default run target", which there can | |
1379 | be only one, and we make it be "target native" like other ports. | |
1380 | "target procfs <node>" wouldn't make sense as default run target, as | |
1381 | it needs <node>. */ | |
ee8e9165 | 1382 | |
132f8e03 PA |
1383 | static int |
1384 | procfs_can_run (struct target_ops *self) | |
1385 | { | |
1386 | return 0; | |
1387 | } | |
1388 | ||
1389 | /* "target procfs". */ | |
1390 | static struct target_ops nto_procfs_ops; | |
1391 | ||
6a3cb8e8 PA |
1392 | /* "target native". */ |
1393 | static struct target_ops *nto_native_ops; | |
1394 | ||
1395 | /* to_open implementation for "target procfs". */ | |
1396 | ||
1397 | static void | |
1398 | procfs_open (char *arg, int from_tty) | |
1399 | { | |
1400 | procfs_open_1 (&nto_procfs_ops, arg, from_tty); | |
1401 | } | |
1402 | ||
1403 | /* to_open implementation for "target native". */ | |
1404 | ||
1405 | static void | |
1406 | procfs_native_open (char *arg, int from_tty) | |
1407 | { | |
1408 | procfs_open_1 (nto_native_ops, arg, from_tty); | |
1409 | } | |
1410 | ||
132f8e03 PA |
1411 | /* Create the "native" and "procfs" targets. */ |
1412 | ||
1413 | static void | |
1414 | init_procfs_targets (void) | |
61bb466e | 1415 | { |
ee8e9165 PA |
1416 | struct target_ops *t = inf_child_target (); |
1417 | ||
132f8e03 PA |
1418 | /* Leave to_shortname as "native". */ |
1419 | t->to_longname = "QNX Neutrino local process"; | |
1420 | t->to_doc = "QNX Neutrino local process (started by the \"run\" command)."; | |
6a3cb8e8 | 1421 | t->to_open = procfs_native_open; |
ee8e9165 PA |
1422 | t->to_attach = procfs_attach; |
1423 | t->to_post_attach = procfs_post_attach; | |
1424 | t->to_detach = procfs_detach; | |
1425 | t->to_resume = procfs_resume; | |
1426 | t->to_wait = procfs_wait; | |
1427 | t->to_fetch_registers = procfs_fetch_registers; | |
1428 | t->to_store_registers = procfs_store_registers; | |
1429 | t->to_xfer_partial = procfs_xfer_partial; | |
1430 | t->to_files_info = procfs_files_info; | |
1431 | t->to_insert_breakpoint = procfs_insert_breakpoint; | |
1432 | t->to_remove_breakpoint = procfs_remove_breakpoint; | |
1433 | t->to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint; | |
1434 | t->to_insert_hw_breakpoint = procfs_insert_hw_breakpoint; | |
1435 | t->to_remove_hw_breakpoint = procfs_remove_hw_breakpoint; | |
1436 | t->to_insert_watchpoint = procfs_insert_hw_watchpoint; | |
1437 | t->to_remove_watchpoint = procfs_remove_hw_watchpoint; | |
1438 | t->to_stopped_by_watchpoint = procfs_stopped_by_watchpoint; | |
1439 | t->to_kill = procfs_kill_inferior; | |
1440 | t->to_create_inferior = procfs_create_inferior; | |
1441 | t->to_mourn_inferior = procfs_mourn_inferior; | |
1442 | t->to_pass_signals = procfs_pass_signals; | |
1443 | t->to_thread_alive = procfs_thread_alive; | |
1444 | t->to_find_new_threads = procfs_find_new_threads; | |
1445 | t->to_pid_to_str = procfs_pid_to_str; | |
1446 | t->to_stop = procfs_stop; | |
1447 | t->to_have_continuable_watchpoint = 1; | |
1448 | t->to_extra_thread_info = nto_extra_thread_info; | |
1449 | ||
6a3cb8e8 PA |
1450 | nto_native_ops = t; |
1451 | ||
132f8e03 PA |
1452 | /* Register "target native". This is the default run target. */ |
1453 | add_target (t); | |
1454 | ||
1455 | /* Register "target procfs <node>". */ | |
1456 | nto_procfs_ops = *t; | |
1457 | nto_procfs_ops.to_shortname = "procfs"; | |
1458 | nto_procfs_ops.to_can_run = procfs_can_run; | |
1459 | t->to_longname = "QNX Neutrino local or remote process"; | |
1460 | t->to_doc = "QNX Neutrino process. target procfs <node>"; | |
6a3cb8e8 PA |
1461 | t->to_open = procfs_open; |
1462 | ||
132f8e03 | 1463 | add_target (&nto_procfs_ops); |
61bb466e KW |
1464 | } |
1465 | ||
1466 | #define OSTYPE_NTO 1 | |
1467 | ||
1468 | void | |
dc5dd1eb | 1469 | _initialize_procfs (void) |
61bb466e KW |
1470 | { |
1471 | sigset_t set; | |
1472 | ||
132f8e03 | 1473 | init_procfs_targets (); |
61bb466e KW |
1474 | |
1475 | /* We use SIGUSR1 to gain control after we block waiting for a process. | |
1476 | We use sigwaitevent to wait. */ | |
1477 | sigemptyset (&set); | |
1478 | sigaddset (&set, SIGUSR1); | |
1479 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1480 | ||
2455069d UW |
1481 | /* Initially, make sure all signals are reported. */ |
1482 | sigfillset (&run.trace); | |
61bb466e KW |
1483 | |
1484 | /* Stuff some information. */ | |
1485 | nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags; | |
1486 | nto_cpuinfo_valid = 1; | |
1487 | ||
1bedd215 AC |
1488 | add_info ("pidlist", procfs_pidlist, _("pidlist")); |
1489 | add_info ("meminfo", procfs_meminfo, _("memory information")); | |
d737fd7f KW |
1490 | |
1491 | nto_is_nto_target = procfs_is_nto_target; | |
61bb466e KW |
1492 | } |
1493 | ||
1494 | ||
1495 | static int | |
1496 | procfs_hw_watchpoint (int addr, int len, int type) | |
1497 | { | |
1498 | procfs_break brk; | |
1499 | ||
1500 | switch (type) | |
1501 | { | |
1502 | case 1: /* Read. */ | |
1503 | brk.type = _DEBUG_BREAK_RD; | |
1504 | break; | |
1505 | case 2: /* Read/Write. */ | |
1506 | brk.type = _DEBUG_BREAK_RW; | |
1507 | break; | |
1508 | default: /* Modify. */ | |
1509 | /* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */ | |
1510 | brk.type = _DEBUG_BREAK_RW; | |
1511 | } | |
1512 | brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */ | |
1513 | brk.addr = addr; | |
1514 | brk.size = len; | |
1515 | ||
1516 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1517 | if (errno != EOK) | |
1518 | { | |
9b20d036 | 1519 | perror (_("Failed to set hardware watchpoint")); |
61bb466e KW |
1520 | return -1; |
1521 | } | |
1522 | return 0; | |
1523 | } | |
1524 | ||
1525 | static int | |
5461485a TT |
1526 | procfs_can_use_hw_breakpoint (struct target_ops *self, |
1527 | int type, int cnt, int othertype) | |
61bb466e KW |
1528 | { |
1529 | return 1; | |
1530 | } | |
1531 | ||
1532 | static int | |
11b5219a TT |
1533 | procfs_remove_hw_watchpoint (struct target_ops *self, |
1534 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 1535 | struct expression *cond) |
61bb466e KW |
1536 | { |
1537 | return procfs_hw_watchpoint (addr, -1, type); | |
1538 | } | |
1539 | ||
1540 | static int | |
7bb99c53 TT |
1541 | procfs_insert_hw_watchpoint (struct target_ops *self, |
1542 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 1543 | struct expression *cond) |
61bb466e KW |
1544 | { |
1545 | return procfs_hw_watchpoint (addr, len, type); | |
1546 | } | |
1547 | ||
1548 | static int | |
6a109b6b | 1549 | procfs_stopped_by_watchpoint (struct target_ops *ops) |
61bb466e KW |
1550 | { |
1551 | return 0; | |
1552 | } |