Commit | Line | Data |
---|---|---|
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 | |
0b302171 | 4 | Copyright (C) 2003, 2006-2012 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> | |
5483d879 | 31 | #include "gdb_dirent.h" |
61bb466e KW |
32 | #include <sys/netmgr.h> |
33 | ||
60250e8b | 34 | #include "exceptions.h" |
61bb466e KW |
35 | #include "gdb_string.h" |
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" |
61bb466e KW |
45 | |
46 | #define NULL_PID 0 | |
47 | #define _DEBUG_FLAG_TRACE (_DEBUG_FLAG_TRACE_EXEC|_DEBUG_FLAG_TRACE_RD|\ | |
48 | _DEBUG_FLAG_TRACE_WR|_DEBUG_FLAG_TRACE_MODIFY) | |
49 | ||
50 | static struct target_ops procfs_ops; | |
51 | ||
52 | int ctl_fd; | |
53 | ||
54 | static void (*ofunc) (); | |
55 | ||
56 | static procfs_run run; | |
57 | ||
58 | static void procfs_open (char *, int); | |
59 | ||
60 | static int procfs_can_run (void); | |
61 | ||
14ef7606 | 62 | static int procfs_xfer_memory (CORE_ADDR, gdb_byte *, int, int, |
61bb466e KW |
63 | struct mem_attrib *attrib, |
64 | struct target_ops *); | |
65 | ||
61bb466e KW |
66 | static void init_procfs_ops (void); |
67 | ||
68 | static ptid_t do_attach (ptid_t ptid); | |
69 | ||
70 | static int procfs_can_use_hw_breakpoint (int, int, int); | |
71 | ||
a8f42b45 UW |
72 | static int procfs_insert_hw_watchpoint (CORE_ADDR addr, int len, int type, |
73 | struct expression *cond); | |
61bb466e | 74 | |
a8f42b45 UW |
75 | static int procfs_remove_hw_watchpoint (CORE_ADDR addr, int len, int type, |
76 | struct expression *cond); | |
61bb466e KW |
77 | |
78 | static int procfs_stopped_by_watchpoint (void); | |
79 | ||
80 | /* These two globals are only ever set in procfs_open(), but are | |
81 | referenced elsewhere. 'nto_procfs_node' is a flag used to say | |
82 | whether we are local, or we should get the current node descriptor | |
83 | for the remote QNX node. */ | |
84 | static char nto_procfs_path[PATH_MAX] = { "/proc" }; | |
85 | static unsigned nto_procfs_node = ND_LOCAL_NODE; | |
86 | ||
87 | /* Return the current QNX Node, or error out. This is a simple | |
88 | wrapper for the netmgr_strtond() function. The reason this | |
89 | is required is because QNX node descriptors are transient so | |
90 | we have to re-acquire them every time. */ | |
91 | static unsigned | |
d737fd7f | 92 | nto_node (void) |
61bb466e KW |
93 | { |
94 | unsigned node; | |
95 | ||
d737fd7f | 96 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0) |
61bb466e KW |
97 | return ND_LOCAL_NODE; |
98 | ||
d737fd7f | 99 | node = netmgr_strtond (nto_procfs_path, 0); |
61bb466e | 100 | if (node == -1) |
8a3fe4f8 | 101 | error (_("Lost the QNX node. Debug session probably over.")); |
61bb466e KW |
102 | |
103 | return (node); | |
104 | } | |
105 | ||
d737fd7f KW |
106 | static enum gdb_osabi |
107 | procfs_is_nto_target (bfd *abfd) | |
108 | { | |
109 | return GDB_OSABI_QNXNTO; | |
110 | } | |
111 | ||
61bb466e KW |
112 | /* This is called when we call 'target procfs <arg>' from the (gdb) prompt. |
113 | For QNX6 (nto), the only valid arg will be a QNX node string, | |
114 | eg: "/net/some_node". If arg is not a valid QNX node, we will | |
115 | default to local. */ | |
116 | static void | |
117 | procfs_open (char *arg, int from_tty) | |
118 | { | |
119 | char *nodestr; | |
120 | char *endstr; | |
121 | char buffer[50]; | |
122 | int fd, total_size; | |
123 | procfs_sysinfo *sysinfo; | |
9fe4a216 | 124 | struct cleanup *cleanups; |
61bb466e | 125 | |
d737fd7f KW |
126 | nto_is_nto_target = procfs_is_nto_target; |
127 | ||
61bb466e KW |
128 | /* Set the default node used for spawning to this one, |
129 | and only override it if there is a valid arg. */ | |
130 | ||
131 | nto_procfs_node = ND_LOCAL_NODE; | |
132 | nodestr = arg ? xstrdup (arg) : arg; | |
133 | ||
134 | init_thread_list (); | |
135 | ||
136 | if (nodestr) | |
137 | { | |
138 | nto_procfs_node = netmgr_strtond (nodestr, &endstr); | |
139 | if (nto_procfs_node == -1) | |
140 | { | |
141 | if (errno == ENOTSUP) | |
142 | printf_filtered ("QNX Net Manager not found.\n"); | |
143 | printf_filtered ("Invalid QNX node %s: error %d (%s).\n", nodestr, | |
dc5dd1eb | 144 | errno, safe_strerror (errno)); |
61bb466e KW |
145 | xfree (nodestr); |
146 | nodestr = NULL; | |
147 | nto_procfs_node = ND_LOCAL_NODE; | |
148 | } | |
149 | else if (*endstr) | |
150 | { | |
151 | if (*(endstr - 1) == '/') | |
152 | *(endstr - 1) = 0; | |
153 | else | |
154 | *endstr = 0; | |
155 | } | |
156 | } | |
d737fd7f KW |
157 | snprintf (nto_procfs_path, PATH_MAX - 1, "%s%s", nodestr ? nodestr : "", |
158 | "/proc"); | |
61bb466e KW |
159 | if (nodestr) |
160 | xfree (nodestr); | |
161 | ||
162 | fd = open (nto_procfs_path, O_RDONLY); | |
163 | if (fd == -1) | |
164 | { | |
165 | printf_filtered ("Error opening %s : %d (%s)\n", nto_procfs_path, errno, | |
dc5dd1eb | 166 | safe_strerror (errno)); |
8a3fe4f8 | 167 | error (_("Invalid procfs arg")); |
61bb466e | 168 | } |
9fe4a216 | 169 | cleanups = make_cleanup_close (fd); |
61bb466e KW |
170 | |
171 | sysinfo = (void *) buffer; | |
172 | if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, sizeof buffer, 0) != EOK) | |
173 | { | |
174 | printf_filtered ("Error getting size: %d (%s)\n", errno, | |
dc5dd1eb | 175 | safe_strerror (errno)); |
8a3fe4f8 | 176 | error (_("Devctl failed.")); |
61bb466e KW |
177 | } |
178 | else | |
179 | { | |
180 | total_size = sysinfo->total_size; | |
181 | sysinfo = alloca (total_size); | |
182 | if (!sysinfo) | |
183 | { | |
184 | printf_filtered ("Memory error: %d (%s)\n", errno, | |
dc5dd1eb | 185 | safe_strerror (errno)); |
8a3fe4f8 | 186 | error (_("alloca failed.")); |
61bb466e KW |
187 | } |
188 | else | |
189 | { | |
190 | if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, total_size, 0) != EOK) | |
191 | { | |
192 | printf_filtered ("Error getting sysinfo: %d (%s)\n", errno, | |
dc5dd1eb | 193 | safe_strerror (errno)); |
8a3fe4f8 | 194 | error (_("Devctl failed.")); |
61bb466e KW |
195 | } |
196 | else | |
197 | { | |
198 | if (sysinfo->type != | |
1143fffb | 199 | nto_map_arch_to_cputype (gdbarch_bfd_arch_info |
a97b0ac8 | 200 | (target_gdbarch)->arch_name)) |
9fe4a216 | 201 | error (_("Invalid target CPU.")); |
61bb466e KW |
202 | } |
203 | } | |
204 | } | |
9fe4a216 | 205 | do_cleanups (cleanups); |
61bb466e KW |
206 | printf_filtered ("Debugging using %s\n", nto_procfs_path); |
207 | } | |
208 | ||
209 | static void | |
210 | procfs_set_thread (ptid_t ptid) | |
211 | { | |
212 | pid_t tid; | |
213 | ||
214 | tid = ptid_get_tid (ptid); | |
215 | devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0); | |
216 | } | |
217 | ||
218 | /* Return nonzero if the thread TH is still alive. */ | |
219 | static int | |
28439f5e | 220 | procfs_thread_alive (struct target_ops *ops, ptid_t ptid) |
61bb466e KW |
221 | { |
222 | pid_t tid; | |
745a434e AR |
223 | pid_t pid; |
224 | procfs_status status; | |
225 | int err; | |
61bb466e KW |
226 | |
227 | tid = ptid_get_tid (ptid); | |
745a434e AR |
228 | pid = ptid_get_pid (ptid); |
229 | ||
230 | if (kill (pid, 0) == -1) | |
231 | return 0; | |
232 | ||
233 | status.tid = tid; | |
234 | if ((err = devctl (ctl_fd, DCMD_PROC_TIDSTATUS, | |
235 | &status, sizeof (status), 0)) != EOK) | |
236 | return 0; | |
237 | ||
238 | /* Thread is alive or dead but not yet joined, | |
239 | or dead and there is an alive (or dead unjoined) thread with | |
240 | higher tid. | |
241 | ||
242 | If the tid is not the same as requested, requested tid is dead. */ | |
243 | return (status.tid == tid) && (status.state != STATE_DEAD); | |
244 | } | |
245 | ||
246 | static void | |
247 | update_thread_private_data_name (struct thread_info *new_thread, | |
248 | const char *newname) | |
249 | { | |
250 | int newnamelen; | |
251 | struct private_thread_info *pti; | |
252 | ||
253 | gdb_assert (newname != NULL); | |
254 | gdb_assert (new_thread != NULL); | |
255 | newnamelen = strlen (newname); | |
256 | if (!new_thread->private) | |
257 | { | |
258 | new_thread->private = xmalloc (offsetof (struct private_thread_info, | |
259 | name) | |
260 | + newnamelen + 1); | |
261 | memcpy (new_thread->private->name, newname, newnamelen + 1); | |
262 | } | |
263 | else if (strcmp (newname, new_thread->private->name) != 0) | |
264 | { | |
265 | /* Reallocate if neccessary. */ | |
266 | int oldnamelen = strlen (new_thread->private->name); | |
267 | ||
268 | if (oldnamelen < newnamelen) | |
269 | new_thread->private = xrealloc (new_thread->private, | |
270 | offsetof (struct private_thread_info, | |
271 | name) | |
272 | + newnamelen + 1); | |
273 | memcpy (new_thread->private->name, newname, newnamelen + 1); | |
274 | } | |
275 | } | |
276 | ||
277 | static void | |
278 | update_thread_private_data (struct thread_info *new_thread, | |
279 | pthread_t tid, int state, int flags) | |
280 | { | |
281 | struct private_thread_info *pti; | |
282 | procfs_info pidinfo; | |
283 | struct _thread_name *tn; | |
284 | procfs_threadctl tctl; | |
285 | ||
286 | #if _NTO_VERSION > 630 | |
287 | gdb_assert (new_thread != NULL); | |
288 | ||
289 | if (devctl (ctl_fd, DCMD_PROC_INFO, &pidinfo, | |
290 | sizeof(pidinfo), 0) != EOK) | |
291 | return; | |
292 | ||
293 | memset (&tctl, 0, sizeof (tctl)); | |
294 | tctl.cmd = _NTO_TCTL_NAME; | |
295 | tn = (struct _thread_name *) (&tctl.data); | |
296 | ||
297 | /* Fetch name for the given thread. */ | |
298 | tctl.tid = tid; | |
299 | tn->name_buf_len = sizeof (tctl.data) - sizeof (*tn); | |
300 | tn->new_name_len = -1; /* Getting, not setting. */ | |
301 | if (devctl (ctl_fd, DCMD_PROC_THREADCTL, &tctl, sizeof (tctl), NULL) != EOK) | |
302 | tn->name_buf[0] = '\0'; | |
303 | ||
304 | tn->name_buf[_NTO_THREAD_NAME_MAX] = '\0'; | |
305 | ||
306 | update_thread_private_data_name (new_thread, tn->name_buf); | |
307 | ||
308 | pti = (struct private_thread_info *) new_thread->private; | |
309 | pti->tid = tid; | |
310 | pti->state = state; | |
311 | pti->flags = flags; | |
312 | #endif /* _NTO_VERSION */ | |
61bb466e KW |
313 | } |
314 | ||
315 | void | |
28439f5e | 316 | procfs_find_new_threads (struct target_ops *ops) |
61bb466e KW |
317 | { |
318 | procfs_status status; | |
319 | pid_t pid; | |
320 | ptid_t ptid; | |
745a434e AR |
321 | pthread_t tid; |
322 | struct thread_info *new_thread; | |
61bb466e KW |
323 | |
324 | if (ctl_fd == -1) | |
325 | return; | |
326 | ||
327 | pid = ptid_get_pid (inferior_ptid); | |
328 | ||
745a434e AR |
329 | status.tid = 1; |
330 | ||
331 | for (tid = 1;; ++tid) | |
61bb466e | 332 | { |
745a434e AR |
333 | if (status.tid == tid |
334 | && (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0) | |
335 | != EOK)) | |
61bb466e | 336 | break; |
745a434e AR |
337 | if (status.tid != tid) |
338 | /* The reason why this would not be equal is that devctl might have | |
339 | returned different tid, meaning the requested tid no longer exists | |
340 | (e.g. thread exited). */ | |
341 | continue; | |
342 | ptid = ptid_build (pid, 0, tid); | |
343 | new_thread = find_thread_ptid (ptid); | |
344 | if (!new_thread) | |
345 | new_thread = add_thread (ptid); | |
346 | update_thread_private_data (new_thread, tid, status.state, 0); | |
347 | status.tid++; | |
61bb466e KW |
348 | } |
349 | return; | |
350 | } | |
351 | ||
9fe4a216 TT |
352 | static void |
353 | do_closedir_cleanup (void *dir) | |
354 | { | |
355 | closedir (dir); | |
356 | } | |
357 | ||
61bb466e KW |
358 | void |
359 | procfs_pidlist (char *args, int from_tty) | |
360 | { | |
361 | DIR *dp = NULL; | |
362 | struct dirent *dirp = NULL; | |
61bb466e KW |
363 | char buf[512]; |
364 | procfs_info *pidinfo = NULL; | |
365 | procfs_debuginfo *info = NULL; | |
366 | procfs_status *status = NULL; | |
367 | pid_t num_threads = 0; | |
368 | pid_t pid; | |
369 | char name[512]; | |
9fe4a216 | 370 | struct cleanup *cleanups; |
61bb466e KW |
371 | |
372 | dp = opendir (nto_procfs_path); | |
373 | if (dp == NULL) | |
374 | { | |
dc5dd1eb | 375 | fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)", |
d737fd7f | 376 | nto_procfs_path, errno, safe_strerror (errno)); |
61bb466e KW |
377 | return; |
378 | } | |
379 | ||
9fe4a216 TT |
380 | cleanups = make_cleanup (do_closedir_cleanup, dp); |
381 | ||
61bb466e KW |
382 | /* Start scan at first pid. */ |
383 | rewinddir (dp); | |
384 | ||
385 | do | |
386 | { | |
9fe4a216 TT |
387 | int fd; |
388 | struct cleanup *inner_cleanup; | |
389 | ||
61bb466e KW |
390 | /* Get the right pid and procfs path for the pid. */ |
391 | do | |
392 | { | |
393 | dirp = readdir (dp); | |
394 | if (dirp == NULL) | |
395 | { | |
9fe4a216 | 396 | do_cleanups (cleanups); |
61bb466e KW |
397 | return; |
398 | } | |
dc5dd1eb | 399 | snprintf (buf, 511, "%s/%s/as", nto_procfs_path, dirp->d_name); |
61bb466e KW |
400 | pid = atoi (dirp->d_name); |
401 | } | |
402 | while (pid == 0); | |
403 | ||
0df8b418 | 404 | /* Open the procfs path. */ |
61bb466e KW |
405 | fd = open (buf, O_RDONLY); |
406 | if (fd == -1) | |
407 | { | |
dc5dd1eb | 408 | fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n", |
d737fd7f | 409 | buf, errno, safe_strerror (errno)); |
9fe4a216 | 410 | do_cleanups (cleanups); |
61bb466e KW |
411 | return; |
412 | } | |
9fe4a216 | 413 | inner_cleanup = make_cleanup_close (fd); |
61bb466e KW |
414 | |
415 | pidinfo = (procfs_info *) buf; | |
416 | if (devctl (fd, DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK) | |
417 | { | |
dc5dd1eb | 418 | fprintf_unfiltered (gdb_stderr, |
d737fd7f KW |
419 | "devctl DCMD_PROC_INFO failed - %d (%s)\n", |
420 | errno, safe_strerror (errno)); | |
61bb466e KW |
421 | break; |
422 | } | |
423 | num_threads = pidinfo->num_threads; | |
424 | ||
425 | info = (procfs_debuginfo *) buf; | |
426 | if (devctl (fd, DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0) != EOK) | |
427 | strcpy (name, "unavailable"); | |
428 | else | |
429 | strcpy (name, info->path); | |
430 | ||
431 | /* Collect state info on all the threads. */ | |
432 | status = (procfs_status *) buf; | |
433 | for (status->tid = 1; status->tid <= num_threads; status->tid++) | |
434 | { | |
435 | if (devctl (fd, DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0) != EOK | |
436 | && status->tid != 0) | |
437 | break; | |
438 | if (status->tid != 0) | |
439 | printf_filtered ("%s - %d/%d\n", name, pid, status->tid); | |
440 | } | |
9fe4a216 TT |
441 | |
442 | do_cleanups (inner_cleanup); | |
61bb466e KW |
443 | } |
444 | while (dirp != NULL); | |
445 | ||
9fe4a216 | 446 | do_cleanups (cleanups); |
61bb466e KW |
447 | return; |
448 | } | |
449 | ||
450 | void | |
451 | procfs_meminfo (char *args, int from_tty) | |
452 | { | |
453 | procfs_mapinfo *mapinfos = NULL; | |
454 | static int num_mapinfos = 0; | |
455 | procfs_mapinfo *mapinfo_p, *mapinfo_p2; | |
456 | int flags = ~0, err, num, i, j; | |
457 | ||
458 | struct | |
459 | { | |
460 | procfs_debuginfo info; | |
461 | char buff[_POSIX_PATH_MAX]; | |
462 | } map; | |
463 | ||
464 | struct info | |
465 | { | |
466 | unsigned addr; | |
467 | unsigned size; | |
468 | unsigned flags; | |
469 | unsigned debug_vaddr; | |
470 | unsigned long long offset; | |
471 | }; | |
472 | ||
473 | struct printinfo | |
474 | { | |
475 | unsigned long long ino; | |
476 | unsigned dev; | |
477 | struct info text; | |
478 | struct info data; | |
479 | char name[256]; | |
480 | } printme; | |
481 | ||
482 | /* Get the number of map entrys. */ | |
483 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num); | |
484 | if (err != EOK) | |
485 | { | |
d737fd7f KW |
486 | printf ("failed devctl num mapinfos - %d (%s)\n", err, |
487 | safe_strerror (err)); | |
61bb466e KW |
488 | return; |
489 | } | |
490 | ||
491 | mapinfos = xmalloc (num * sizeof (procfs_mapinfo)); | |
492 | ||
493 | num_mapinfos = num; | |
494 | mapinfo_p = mapinfos; | |
495 | ||
496 | /* Fill the map entrys. */ | |
497 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, mapinfo_p, num | |
498 | * sizeof (procfs_mapinfo), &num); | |
499 | if (err != EOK) | |
500 | { | |
5483d879 | 501 | printf ("failed devctl mapinfos - %d (%s)\n", err, safe_strerror (err)); |
61bb466e KW |
502 | xfree (mapinfos); |
503 | return; | |
504 | } | |
505 | ||
506 | num = min (num, num_mapinfos); | |
507 | ||
508 | /* Run through the list of mapinfos, and store the data and text info | |
509 | so we can print it at the bottom of the loop. */ | |
510 | for (mapinfo_p = mapinfos, i = 0; i < num; i++, mapinfo_p++) | |
511 | { | |
512 | if (!(mapinfo_p->flags & flags)) | |
513 | mapinfo_p->ino = 0; | |
514 | ||
515 | if (mapinfo_p->ino == 0) /* Already visited. */ | |
516 | continue; | |
517 | ||
518 | map.info.vaddr = mapinfo_p->vaddr; | |
519 | ||
520 | err = devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
521 | if (err != EOK) | |
522 | continue; | |
523 | ||
524 | memset (&printme, 0, sizeof printme); | |
525 | printme.dev = mapinfo_p->dev; | |
526 | printme.ino = mapinfo_p->ino; | |
527 | printme.text.addr = mapinfo_p->vaddr; | |
528 | printme.text.size = mapinfo_p->size; | |
529 | printme.text.flags = mapinfo_p->flags; | |
530 | printme.text.offset = mapinfo_p->offset; | |
531 | printme.text.debug_vaddr = map.info.vaddr; | |
532 | strcpy (printme.name, map.info.path); | |
533 | ||
534 | /* Check for matching data. */ | |
535 | for (mapinfo_p2 = mapinfos, j = 0; j < num; j++, mapinfo_p2++) | |
536 | { | |
537 | if (mapinfo_p2->vaddr != mapinfo_p->vaddr | |
538 | && mapinfo_p2->ino == mapinfo_p->ino | |
539 | && mapinfo_p2->dev == mapinfo_p->dev) | |
540 | { | |
541 | map.info.vaddr = mapinfo_p2->vaddr; | |
542 | err = | |
543 | devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
544 | if (err != EOK) | |
545 | continue; | |
546 | ||
547 | if (strcmp (map.info.path, printme.name)) | |
548 | continue; | |
549 | ||
550 | /* Lower debug_vaddr is always text, if nessessary, swap. */ | |
551 | if ((int) map.info.vaddr < (int) printme.text.debug_vaddr) | |
552 | { | |
553 | memcpy (&(printme.data), &(printme.text), | |
554 | sizeof (printme.data)); | |
555 | printme.text.addr = mapinfo_p2->vaddr; | |
556 | printme.text.size = mapinfo_p2->size; | |
557 | printme.text.flags = mapinfo_p2->flags; | |
558 | printme.text.offset = mapinfo_p2->offset; | |
559 | printme.text.debug_vaddr = map.info.vaddr; | |
560 | } | |
561 | else | |
562 | { | |
563 | printme.data.addr = mapinfo_p2->vaddr; | |
564 | printme.data.size = mapinfo_p2->size; | |
565 | printme.data.flags = mapinfo_p2->flags; | |
566 | printme.data.offset = mapinfo_p2->offset; | |
567 | printme.data.debug_vaddr = map.info.vaddr; | |
568 | } | |
569 | mapinfo_p2->ino = 0; | |
570 | } | |
571 | } | |
572 | mapinfo_p->ino = 0; | |
573 | ||
574 | printf_filtered ("%s\n", printme.name); | |
575 | printf_filtered ("\ttext=%08x bytes @ 0x%08x\n", printme.text.size, | |
576 | printme.text.addr); | |
577 | printf_filtered ("\t\tflags=%08x\n", printme.text.flags); | |
578 | printf_filtered ("\t\tdebug=%08x\n", printme.text.debug_vaddr); | |
2244ba2e | 579 | printf_filtered ("\t\toffset=%s\n", phex (printme.text.offset, 8)); |
61bb466e KW |
580 | if (printme.data.size) |
581 | { | |
582 | printf_filtered ("\tdata=%08x bytes @ 0x%08x\n", printme.data.size, | |
583 | printme.data.addr); | |
584 | printf_filtered ("\t\tflags=%08x\n", printme.data.flags); | |
585 | printf_filtered ("\t\tdebug=%08x\n", printme.data.debug_vaddr); | |
2244ba2e | 586 | printf_filtered ("\t\toffset=%s\n", phex (printme.data.offset, 8)); |
61bb466e KW |
587 | } |
588 | printf_filtered ("\tdev=0x%x\n", printme.dev); | |
589 | printf_filtered ("\tino=0x%x\n", (unsigned int) printme.ino); | |
590 | } | |
591 | xfree (mapinfos); | |
592 | return; | |
593 | } | |
594 | ||
595 | /* Print status information about what we're accessing. */ | |
596 | static void | |
597 | procfs_files_info (struct target_ops *ignore) | |
598 | { | |
181e7f93 PA |
599 | struct inferior *inf = current_inferior (); |
600 | ||
61bb466e | 601 | printf_unfiltered ("\tUsing the running image of %s %s via %s.\n", |
3fdfcbf1 | 602 | inf->attach_flag ? "attached" : "child", |
61bb466e KW |
603 | target_pid_to_str (inferior_ptid), nto_procfs_path); |
604 | } | |
605 | ||
0df8b418 MS |
606 | /* Mark our target-struct as eligible for stray "run" and "attach" |
607 | commands. */ | |
61bb466e | 608 | static int |
5483d879 | 609 | procfs_can_run (void) |
61bb466e KW |
610 | { |
611 | return 1; | |
612 | } | |
613 | ||
614 | /* Attach to process PID, then initialize for debugging it. */ | |
615 | static void | |
136d6dae | 616 | procfs_attach (struct target_ops *ops, char *args, int from_tty) |
61bb466e KW |
617 | { |
618 | char *exec_file; | |
619 | int pid; | |
181e7f93 | 620 | struct inferior *inf; |
61bb466e | 621 | |
74164c56 | 622 | pid = parse_pid_to_attach (args); |
61bb466e KW |
623 | |
624 | if (pid == getpid ()) | |
8a3fe4f8 | 625 | error (_("Attaching GDB to itself is not a good idea...")); |
61bb466e KW |
626 | |
627 | if (from_tty) | |
628 | { | |
629 | exec_file = (char *) get_exec_file (0); | |
630 | ||
631 | if (exec_file) | |
632 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
633 | target_pid_to_str (pid_to_ptid (pid))); | |
634 | else | |
635 | printf_unfiltered ("Attaching to %s\n", | |
636 | target_pid_to_str (pid_to_ptid (pid))); | |
637 | ||
638 | gdb_flush (gdb_stdout); | |
639 | } | |
640 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
6c95b8df PA |
641 | inf = current_inferior (); |
642 | inferior_appeared (inf, pid); | |
181e7f93 | 643 | inf->attach_flag = 1; |
7f9f62ba | 644 | |
28439f5e | 645 | push_target (ops); |
7f9f62ba | 646 | |
28439f5e | 647 | procfs_find_new_threads (ops); |
61bb466e KW |
648 | } |
649 | ||
650 | static void | |
651 | procfs_post_attach (pid_t pid) | |
652 | { | |
61bb466e | 653 | if (exec_bfd) |
268a4a75 | 654 | solib_create_inferior_hook (0); |
61bb466e KW |
655 | } |
656 | ||
657 | static ptid_t | |
658 | do_attach (ptid_t ptid) | |
659 | { | |
660 | procfs_status status; | |
661 | struct sigevent event; | |
dc5dd1eb | 662 | char path[PATH_MAX]; |
61bb466e | 663 | |
dc5dd1eb | 664 | snprintf (path, PATH_MAX - 1, "%s/%d/as", nto_procfs_path, PIDGET (ptid)); |
61bb466e KW |
665 | ctl_fd = open (path, O_RDWR); |
666 | if (ctl_fd == -1) | |
8a3fe4f8 | 667 | error (_("Couldn't open proc file %s, error %d (%s)"), path, errno, |
dc5dd1eb | 668 | safe_strerror (errno)); |
61bb466e | 669 | if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK) |
8a3fe4f8 | 670 | error (_("Couldn't stop process")); |
61bb466e KW |
671 | |
672 | /* Define a sigevent for process stopped notification. */ | |
673 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
674 | event.sigev_signo = SIGUSR1; | |
675 | event.sigev_code = 0; | |
676 | event.sigev_value.sival_ptr = NULL; | |
677 | event.sigev_priority = -1; | |
678 | devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0); | |
679 | ||
680 | if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK | |
681 | && status.flags & _DEBUG_FLAG_STOPPED) | |
d737fd7f | 682 | SignalKill (nto_node (), PIDGET (ptid), 0, SIGCONT, 0, 0); |
61bb466e | 683 | nto_init_solib_absolute_prefix (); |
103fd00d | 684 | return ptid_build (PIDGET (ptid), 0, status.tid); |
61bb466e KW |
685 | } |
686 | ||
687 | /* Ask the user what to do when an interrupt is received. */ | |
688 | static void | |
dc5dd1eb | 689 | interrupt_query (void) |
61bb466e KW |
690 | { |
691 | target_terminal_ours (); | |
692 | ||
9e2f0ad4 HZ |
693 | if (query (_("Interrupted while waiting for the program.\n\ |
694 | Give up (and stop debugging it)? "))) | |
61bb466e KW |
695 | { |
696 | target_mourn_inferior (); | |
315a522e | 697 | deprecated_throw_reason (RETURN_QUIT); |
61bb466e KW |
698 | } |
699 | ||
700 | target_terminal_inferior (); | |
701 | } | |
702 | ||
703 | /* The user typed ^C twice. */ | |
704 | static void | |
705 | nto_interrupt_twice (int signo) | |
706 | { | |
707 | signal (signo, ofunc); | |
708 | interrupt_query (); | |
709 | signal (signo, nto_interrupt_twice); | |
710 | } | |
711 | ||
712 | static void | |
713 | nto_interrupt (int signo) | |
714 | { | |
715 | /* If this doesn't work, try more severe steps. */ | |
716 | signal (signo, nto_interrupt_twice); | |
717 | ||
f9c72d52 | 718 | target_stop (inferior_ptid); |
61bb466e KW |
719 | } |
720 | ||
721 | static ptid_t | |
117de6a9 | 722 | procfs_wait (struct target_ops *ops, |
47608cb1 | 723 | ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
61bb466e KW |
724 | { |
725 | sigset_t set; | |
726 | siginfo_t info; | |
727 | procfs_status status; | |
728 | static int exit_signo = 0; /* To track signals that cause termination. */ | |
729 | ||
730 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
731 | ||
732 | if (ptid_equal (inferior_ptid, null_ptid)) | |
733 | { | |
734 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
735 | ourstatus->value.sig = TARGET_SIGNAL_0; | |
736 | exit_signo = 0; | |
737 | return null_ptid; | |
738 | } | |
739 | ||
740 | sigemptyset (&set); | |
741 | sigaddset (&set, SIGUSR1); | |
742 | ||
743 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
744 | while (!(status.flags & _DEBUG_FLAG_ISTOP)) | |
745 | { | |
746 | ofunc = (void (*)()) signal (SIGINT, nto_interrupt); | |
747 | sigwaitinfo (&set, &info); | |
748 | signal (SIGINT, ofunc); | |
749 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
750 | } | |
751 | ||
752 | if (status.flags & _DEBUG_FLAG_SSTEP) | |
753 | { | |
754 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
755 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
756 | } | |
757 | /* Was it a breakpoint? */ | |
758 | else if (status.flags & _DEBUG_FLAG_TRACE) | |
759 | { | |
760 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
761 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
762 | } | |
763 | else if (status.flags & _DEBUG_FLAG_ISTOP) | |
764 | { | |
765 | switch (status.why) | |
766 | { | |
767 | case _DEBUG_WHY_SIGNALLED: | |
768 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
769 | ourstatus->value.sig = | |
770 | target_signal_from_host (status.info.si_signo); | |
771 | exit_signo = 0; | |
772 | break; | |
773 | case _DEBUG_WHY_FAULTED: | |
774 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
775 | if (status.info.si_signo == SIGTRAP) | |
776 | { | |
777 | ourstatus->value.sig = 0; | |
778 | exit_signo = 0; | |
779 | } | |
780 | else | |
781 | { | |
782 | ourstatus->value.sig = | |
783 | target_signal_from_host (status.info.si_signo); | |
784 | exit_signo = ourstatus->value.sig; | |
785 | } | |
786 | break; | |
787 | ||
788 | case _DEBUG_WHY_TERMINATED: | |
789 | { | |
790 | int waitval = 0; | |
791 | ||
792 | waitpid (PIDGET (inferior_ptid), &waitval, WNOHANG); | |
793 | if (exit_signo) | |
794 | { | |
795 | /* Abnormal death. */ | |
796 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
797 | ourstatus->value.sig = exit_signo; | |
798 | } | |
799 | else | |
800 | { | |
801 | /* Normal death. */ | |
802 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
803 | ourstatus->value.integer = WEXITSTATUS (waitval); | |
804 | } | |
805 | exit_signo = 0; | |
806 | break; | |
807 | } | |
808 | ||
809 | case _DEBUG_WHY_REQUESTED: | |
810 | /* We are assuming a requested stop is due to a SIGINT. */ | |
811 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
812 | ourstatus->value.sig = TARGET_SIGNAL_INT; | |
813 | exit_signo = 0; | |
814 | break; | |
815 | } | |
816 | } | |
817 | ||
a6a7f2a5 | 818 | return ptid_build (status.pid, 0, status.tid); |
61bb466e KW |
819 | } |
820 | ||
821 | /* Read the current values of the inferior's registers, both the | |
822 | general register set and floating point registers (if supported) | |
823 | and update gdb's idea of their current values. */ | |
824 | static void | |
28439f5e PA |
825 | procfs_fetch_registers (struct target_ops *ops, |
826 | struct regcache *regcache, int regno) | |
61bb466e KW |
827 | { |
828 | union | |
829 | { | |
830 | procfs_greg greg; | |
831 | procfs_fpreg fpreg; | |
832 | procfs_altreg altreg; | |
833 | } | |
834 | reg; | |
835 | int regsize; | |
836 | ||
837 | procfs_set_thread (inferior_ptid); | |
838 | if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK) | |
56be3814 | 839 | nto_supply_gregset (regcache, (char *) ®.greg); |
61bb466e KW |
840 | if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size) |
841 | == EOK) | |
56be3814 | 842 | nto_supply_fpregset (regcache, (char *) ®.fpreg); |
61bb466e KW |
843 | if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size) |
844 | == EOK) | |
56be3814 | 845 | nto_supply_altregset (regcache, (char *) ®.altreg); |
61bb466e KW |
846 | } |
847 | ||
848 | /* Copy LEN bytes to/from inferior's memory starting at MEMADDR | |
849 | from/to debugger memory starting at MYADDR. Copy from inferior | |
850 | if DOWRITE is zero or to inferior if DOWRITE is nonzero. | |
851 | ||
852 | Returns the length copied, which is either the LEN argument or | |
853 | zero. This xfer function does not do partial moves, since procfs_ops | |
854 | doesn't allow memory operations to cross below us in the target stack | |
855 | anyway. */ | |
856 | static int | |
14ef7606 | 857 | procfs_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int dowrite, |
61bb466e KW |
858 | struct mem_attrib *attrib, struct target_ops *target) |
859 | { | |
860 | int nbytes = 0; | |
861 | ||
862 | if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) == (off_t) memaddr) | |
863 | { | |
864 | if (dowrite) | |
865 | nbytes = write (ctl_fd, myaddr, len); | |
866 | else | |
867 | nbytes = read (ctl_fd, myaddr, len); | |
868 | if (nbytes < 0) | |
869 | nbytes = 0; | |
870 | } | |
871 | return (nbytes); | |
872 | } | |
873 | ||
874 | /* Take a program previously attached to and detaches it. | |
875 | The program resumes execution and will no longer stop | |
876 | on signals, etc. We'd better not have left any breakpoints | |
877 | in the program or it'll die when it hits one. */ | |
878 | static void | |
136d6dae | 879 | procfs_detach (struct target_ops *ops, char *args, int from_tty) |
61bb466e KW |
880 | { |
881 | int siggnal = 0; | |
7f9f62ba | 882 | int pid; |
61bb466e KW |
883 | |
884 | if (from_tty) | |
885 | { | |
886 | char *exec_file = get_exec_file (0); | |
887 | if (exec_file == 0) | |
888 | exec_file = ""; | |
889 | printf_unfiltered ("Detaching from program: %s %s\n", | |
890 | exec_file, target_pid_to_str (inferior_ptid)); | |
891 | gdb_flush (gdb_stdout); | |
892 | } | |
893 | if (args) | |
894 | siggnal = atoi (args); | |
895 | ||
896 | if (siggnal) | |
d737fd7f | 897 | SignalKill (nto_node (), PIDGET (inferior_ptid), 0, siggnal, 0, 0); |
61bb466e KW |
898 | |
899 | close (ctl_fd); | |
900 | ctl_fd = -1; | |
7f9f62ba PA |
901 | |
902 | pid = ptid_get_pid (inferior_ptid); | |
61bb466e | 903 | inferior_ptid = null_ptid; |
7f9f62ba PA |
904 | detach_inferior (pid); |
905 | init_thread_list (); | |
61bb466e KW |
906 | unpush_target (&procfs_ops); /* Pop out of handling an inferior. */ |
907 | } | |
908 | ||
909 | static int | |
910 | procfs_breakpoint (CORE_ADDR addr, int type, int size) | |
911 | { | |
912 | procfs_break brk; | |
913 | ||
914 | brk.type = type; | |
915 | brk.addr = addr; | |
916 | brk.size = size; | |
917 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
918 | if (errno != EOK) | |
919 | return 1; | |
920 | return 0; | |
921 | } | |
922 | ||
923 | static int | |
a6d9a66e UW |
924 | procfs_insert_breakpoint (struct gdbarch *gdbarch, |
925 | struct bp_target_info *bp_tgt) | |
61bb466e | 926 | { |
8181d85f | 927 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, 0); |
61bb466e KW |
928 | } |
929 | ||
930 | static int | |
a6d9a66e UW |
931 | procfs_remove_breakpoint (struct gdbarch *gdbarch, |
932 | struct bp_target_info *bp_tgt) | |
61bb466e | 933 | { |
8181d85f | 934 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, -1); |
61bb466e KW |
935 | } |
936 | ||
937 | static int | |
a6d9a66e UW |
938 | procfs_insert_hw_breakpoint (struct gdbarch *gdbarch, |
939 | struct bp_target_info *bp_tgt) | |
61bb466e | 940 | { |
8181d85f DJ |
941 | return procfs_breakpoint (bp_tgt->placed_address, |
942 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0); | |
61bb466e KW |
943 | } |
944 | ||
945 | static int | |
a6d9a66e UW |
946 | procfs_remove_hw_breakpoint (struct gdbarch *gdbarch, |
947 | struct bp_target_info *bp_tgt) | |
61bb466e | 948 | { |
8181d85f DJ |
949 | return procfs_breakpoint (bp_tgt->placed_address, |
950 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1); | |
61bb466e KW |
951 | } |
952 | ||
953 | static void | |
28439f5e PA |
954 | procfs_resume (struct target_ops *ops, |
955 | ptid_t ptid, int step, enum target_signal signo) | |
61bb466e KW |
956 | { |
957 | int signal_to_pass; | |
958 | procfs_status status; | |
14ef7606 | 959 | sigset_t *run_fault = (sigset_t *) (void *) &run.fault; |
61bb466e KW |
960 | |
961 | if (ptid_equal (inferior_ptid, null_ptid)) | |
962 | return; | |
963 | ||
964 | procfs_set_thread (ptid_equal (ptid, minus_one_ptid) ? inferior_ptid : | |
965 | ptid); | |
966 | ||
967 | run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE; | |
968 | if (step) | |
969 | run.flags |= _DEBUG_RUN_STEP; | |
970 | ||
14ef7606 AR |
971 | sigemptyset (run_fault); |
972 | sigaddset (run_fault, FLTBPT); | |
973 | sigaddset (run_fault, FLTTRACE); | |
974 | sigaddset (run_fault, FLTILL); | |
975 | sigaddset (run_fault, FLTPRIV); | |
976 | sigaddset (run_fault, FLTBOUNDS); | |
977 | sigaddset (run_fault, FLTIOVF); | |
978 | sigaddset (run_fault, FLTIZDIV); | |
979 | sigaddset (run_fault, FLTFPE); | |
61bb466e | 980 | /* Peter V will be changing this at some point. */ |
14ef7606 | 981 | sigaddset (run_fault, FLTPAGE); |
61bb466e KW |
982 | |
983 | run.flags |= _DEBUG_RUN_ARM; | |
984 | ||
61bb466e KW |
985 | signal_to_pass = target_signal_to_host (signo); |
986 | ||
987 | if (signal_to_pass) | |
988 | { | |
989 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
990 | signal_to_pass = target_signal_to_host (signo); | |
991 | if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED)) | |
992 | { | |
993 | if (signal_to_pass != status.info.si_signo) | |
994 | { | |
d737fd7f KW |
995 | SignalKill (nto_node (), PIDGET (inferior_ptid), 0, |
996 | signal_to_pass, 0, 0); | |
61bb466e KW |
997 | run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG; |
998 | } | |
0df8b418 | 999 | else /* Let it kill the program without telling us. */ |
61bb466e KW |
1000 | sigdelset (&run.trace, signal_to_pass); |
1001 | } | |
1002 | } | |
1003 | else | |
1004 | run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT; | |
1005 | ||
1006 | errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0); | |
1007 | if (errno != EOK) | |
1008 | { | |
9b20d036 | 1009 | perror (_("run error!\n")); |
61bb466e KW |
1010 | return; |
1011 | } | |
1012 | } | |
1013 | ||
1014 | static void | |
136d6dae | 1015 | procfs_mourn_inferior (struct target_ops *ops) |
61bb466e KW |
1016 | { |
1017 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
1018 | { | |
d737fd7f | 1019 | SignalKill (nto_node (), PIDGET (inferior_ptid), 0, SIGKILL, 0, 0); |
61bb466e KW |
1020 | close (ctl_fd); |
1021 | } | |
1022 | inferior_ptid = null_ptid; | |
1023 | init_thread_list (); | |
1024 | unpush_target (&procfs_ops); | |
1025 | generic_mourn_inferior (); | |
61bb466e KW |
1026 | } |
1027 | ||
1028 | /* This function breaks up an argument string into an argument | |
1029 | vector suitable for passing to execvp(). | |
1030 | E.g., on "run a b c d" this routine would get as input | |
1031 | the string "a b c d", and as output it would fill in argv with | |
1032 | the four arguments "a", "b", "c", "d". The only additional | |
1033 | functionality is simple quoting. The gdb command: | |
1034 | run a "b c d" f | |
1035 | will fill in argv with the three args "a", "b c d", "e". */ | |
1036 | static void | |
1037 | breakup_args (char *scratch, char **argv) | |
1038 | { | |
1039 | char *pp, *cp = scratch; | |
1040 | char quoting = 0; | |
1041 | ||
1042 | for (;;) | |
1043 | { | |
1044 | /* Scan past leading separators. */ | |
1045 | quoting = 0; | |
1046 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') | |
1047 | cp++; | |
1048 | ||
1049 | /* Break if at end of string. */ | |
1050 | if (*cp == '\0') | |
1051 | break; | |
1052 | ||
1053 | /* Take an arg. */ | |
1054 | if (*cp == '"') | |
1055 | { | |
1056 | cp++; | |
1057 | quoting = strchr (cp, '"') ? 1 : 0; | |
1058 | } | |
1059 | ||
1060 | *argv++ = cp; | |
1061 | ||
1062 | /* Scan for next arg separator. */ | |
1063 | pp = cp; | |
1064 | if (quoting) | |
1065 | cp = strchr (pp, '"'); | |
1066 | if ((cp == NULL) || (!quoting)) | |
1067 | cp = strchr (pp, ' '); | |
1068 | if (cp == NULL) | |
1069 | cp = strchr (pp, '\t'); | |
1070 | if (cp == NULL) | |
1071 | cp = strchr (pp, '\n'); | |
1072 | ||
1073 | /* No separators => end of string => break. */ | |
1074 | if (cp == NULL) | |
1075 | { | |
1076 | pp = cp; | |
1077 | break; | |
1078 | } | |
1079 | ||
1080 | /* Replace the separator with a terminator. */ | |
1081 | *cp++ = '\0'; | |
1082 | } | |
1083 | ||
1084 | /* Execv requires a null-terminated arg vector. */ | |
1085 | *argv = NULL; | |
1086 | } | |
1087 | ||
1088 | static void | |
136d6dae VP |
1089 | procfs_create_inferior (struct target_ops *ops, char *exec_file, |
1090 | char *allargs, char **env, int from_tty) | |
61bb466e KW |
1091 | { |
1092 | struct inheritance inherit; | |
1093 | pid_t pid; | |
1094 | int flags, errn; | |
1095 | char **argv, *args; | |
3cb3b8df | 1096 | const char *in = "", *out = "", *err = ""; |
61bb466e KW |
1097 | int fd, fds[3]; |
1098 | sigset_t set; | |
3cb3b8df | 1099 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
3fdfcbf1 | 1100 | struct inferior *inf; |
61bb466e KW |
1101 | |
1102 | argv = xmalloc (((strlen (allargs) + 1) / (unsigned) 2 + 2) * | |
1103 | sizeof (*argv)); | |
1104 | argv[0] = get_exec_file (1); | |
1105 | if (!argv[0]) | |
1106 | { | |
1107 | if (exec_file) | |
1108 | argv[0] = exec_file; | |
1109 | else | |
1110 | return; | |
1111 | } | |
1112 | ||
1113 | args = xstrdup (allargs); | |
1114 | breakup_args (args, exec_file ? &argv[1] : &argv[0]); | |
1115 | ||
1116 | argv = nto_parse_redirection (argv, &in, &out, &err); | |
1117 | ||
1118 | fds[0] = STDIN_FILENO; | |
1119 | fds[1] = STDOUT_FILENO; | |
1120 | fds[2] = STDERR_FILENO; | |
1121 | ||
1122 | /* If the user specified I/O via gdb's --tty= arg, use it, but only | |
1123 | if the i/o is not also being specified via redirection. */ | |
1124 | if (inferior_io_terminal) | |
1125 | { | |
1126 | if (!in[0]) | |
1127 | in = inferior_io_terminal; | |
1128 | if (!out[0]) | |
1129 | out = inferior_io_terminal; | |
1130 | if (!err[0]) | |
1131 | err = inferior_io_terminal; | |
1132 | } | |
1133 | ||
1134 | if (in[0]) | |
1135 | { | |
1136 | fd = open (in, O_RDONLY); | |
1137 | if (fd == -1) | |
1138 | perror (in); | |
1139 | else | |
1140 | fds[0] = fd; | |
1141 | } | |
1142 | if (out[0]) | |
1143 | { | |
1144 | fd = open (out, O_WRONLY); | |
1145 | if (fd == -1) | |
1146 | perror (out); | |
1147 | else | |
1148 | fds[1] = fd; | |
1149 | } | |
1150 | if (err[0]) | |
1151 | { | |
1152 | fd = open (err, O_WRONLY); | |
1153 | if (fd == -1) | |
1154 | perror (err); | |
1155 | else | |
1156 | fds[2] = fd; | |
1157 | } | |
1158 | ||
1159 | /* Clear any pending SIGUSR1's but keep the behavior the same. */ | |
1160 | signal (SIGUSR1, signal (SIGUSR1, SIG_IGN)); | |
1161 | ||
1162 | sigemptyset (&set); | |
1163 | sigaddset (&set, SIGUSR1); | |
1164 | sigprocmask (SIG_UNBLOCK, &set, NULL); | |
1165 | ||
1166 | memset (&inherit, 0, sizeof (inherit)); | |
1167 | ||
1168 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0) | |
1169 | { | |
d737fd7f | 1170 | inherit.nd = nto_node (); |
61bb466e KW |
1171 | inherit.flags |= SPAWN_SETND; |
1172 | inherit.flags &= ~SPAWN_EXEC; | |
1173 | } | |
1174 | inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD; | |
1175 | inherit.pgroup = SPAWN_NEWPGROUP; | |
1176 | pid = spawnp (argv[0], 3, fds, &inherit, argv, | |
1177 | ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0); | |
1178 | xfree (args); | |
1179 | ||
1180 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1181 | ||
1182 | if (pid == -1) | |
8a3fe4f8 | 1183 | error (_("Error spawning %s: %d (%s)"), argv[0], errno, |
d737fd7f | 1184 | safe_strerror (errno)); |
61bb466e KW |
1185 | |
1186 | if (fds[0] != STDIN_FILENO) | |
1187 | close (fds[0]); | |
1188 | if (fds[1] != STDOUT_FILENO) | |
1189 | close (fds[1]); | |
1190 | if (fds[2] != STDERR_FILENO) | |
1191 | close (fds[2]); | |
1192 | ||
1193 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
28439f5e | 1194 | procfs_find_new_threads (ops); |
61bb466e | 1195 | |
6c95b8df PA |
1196 | inf = current_inferior (); |
1197 | inferior_appeared (inf, pid); | |
3fdfcbf1 | 1198 | inf->attach_flag = 0; |
7f9f62ba | 1199 | |
61bb466e KW |
1200 | flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */ |
1201 | errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0); | |
1202 | if (errn != EOK) | |
1203 | { | |
1204 | /* FIXME: expected warning? */ | |
1205 | /* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n", | |
1206 | errn, strerror(errn) ); */ | |
1207 | } | |
28439f5e | 1208 | push_target (ops); |
61bb466e KW |
1209 | target_terminal_init (); |
1210 | ||
61bb466e KW |
1211 | if (exec_bfd != NULL |
1212 | || (symfile_objfile != NULL && symfile_objfile->obfd != NULL)) | |
268a4a75 | 1213 | solib_create_inferior_hook (0); |
61bb466e KW |
1214 | } |
1215 | ||
1216 | static void | |
f9c72d52 | 1217 | procfs_stop (ptid_t ptid) |
61bb466e KW |
1218 | { |
1219 | devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0); | |
1220 | } | |
1221 | ||
1222 | static void | |
7d85a9c0 | 1223 | procfs_kill_inferior (struct target_ops *ops) |
61bb466e KW |
1224 | { |
1225 | target_mourn_inferior (); | |
1226 | } | |
1227 | ||
1228 | /* Store register REGNO, or all registers if REGNO == -1, from the contents | |
1229 | of REGISTERS. */ | |
1230 | static void | |
316f2060 | 1231 | procfs_prepare_to_store (struct regcache *regcache) |
61bb466e KW |
1232 | { |
1233 | } | |
1234 | ||
1235 | /* Fill buf with regset and return devctl cmd to do the setting. Return | |
1236 | -1 if we fail to get the regset. Store size of regset in regsize. */ | |
1237 | static int | |
1238 | get_regset (int regset, char *buf, int bufsize, int *regsize) | |
1239 | { | |
1240 | int dev_get, dev_set; | |
1241 | switch (regset) | |
1242 | { | |
1243 | case NTO_REG_GENERAL: | |
1244 | dev_get = DCMD_PROC_GETGREG; | |
1245 | dev_set = DCMD_PROC_SETGREG; | |
1246 | break; | |
1247 | ||
1248 | case NTO_REG_FLOAT: | |
1249 | dev_get = DCMD_PROC_GETFPREG; | |
1250 | dev_set = DCMD_PROC_SETFPREG; | |
1251 | break; | |
1252 | ||
1253 | case NTO_REG_ALT: | |
1254 | dev_get = DCMD_PROC_GETALTREG; | |
1255 | dev_set = DCMD_PROC_SETALTREG; | |
1256 | break; | |
1257 | ||
1258 | case NTO_REG_SYSTEM: | |
1259 | default: | |
1260 | return -1; | |
1261 | } | |
97c44116 | 1262 | if (devctl (ctl_fd, dev_get, buf, bufsize, regsize) != EOK) |
61bb466e KW |
1263 | return -1; |
1264 | ||
1265 | return dev_set; | |
1266 | } | |
1267 | ||
1268 | void | |
28439f5e PA |
1269 | procfs_store_registers (struct target_ops *ops, |
1270 | struct regcache *regcache, int regno) | |
61bb466e KW |
1271 | { |
1272 | union | |
1273 | { | |
1274 | procfs_greg greg; | |
1275 | procfs_fpreg fpreg; | |
1276 | procfs_altreg altreg; | |
1277 | } | |
1278 | reg; | |
1279 | unsigned off; | |
1280 | int len, regset, regsize, dev_set, err; | |
1281 | char *data; | |
1282 | ||
1283 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1284 | return; | |
1285 | procfs_set_thread (inferior_ptid); | |
1286 | ||
1287 | if (regno == -1) | |
1288 | { | |
1289 | for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++) | |
1290 | { | |
1291 | dev_set = get_regset (regset, (char *) ®, | |
1292 | sizeof (reg), ®size); | |
1293 | if (dev_set == -1) | |
1294 | continue; | |
1295 | ||
56be3814 | 1296 | if (nto_regset_fill (regcache, regset, (char *) ®) == -1) |
61bb466e KW |
1297 | continue; |
1298 | ||
1299 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1300 | if (err != EOK) | |
1301 | fprintf_unfiltered (gdb_stderr, | |
1302 | "Warning unable to write regset %d: %s\n", | |
dc5dd1eb | 1303 | regno, safe_strerror (err)); |
61bb466e KW |
1304 | } |
1305 | } | |
1306 | else | |
1307 | { | |
1308 | regset = nto_regset_id (regno); | |
1309 | if (regset == -1) | |
1310 | return; | |
1311 | ||
1312 | dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size); | |
1313 | if (dev_set == -1) | |
1314 | return; | |
1315 | ||
60441ab9 UW |
1316 | len = nto_register_area (get_regcache_arch (regcache), |
1317 | regno, regset, &off); | |
61bb466e KW |
1318 | |
1319 | if (len < 1) | |
1320 | return; | |
1321 | ||
56be3814 | 1322 | regcache_raw_collect (regcache, regno, (char *) ® + off); |
61bb466e KW |
1323 | |
1324 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1325 | if (err != EOK) | |
1326 | fprintf_unfiltered (gdb_stderr, | |
1327 | "Warning unable to write regset %d: %s\n", regno, | |
dc5dd1eb | 1328 | safe_strerror (err)); |
61bb466e KW |
1329 | } |
1330 | } | |
1331 | ||
2455069d UW |
1332 | /* Set list of signals to be handled in the target. */ |
1333 | ||
61bb466e | 1334 | static void |
2455069d | 1335 | procfs_pass_signals (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 | { | |
2455069d UW |
1343 | int target_signo = target_signal_from_host (signo); |
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 | ||
1356 | 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 | ||
1377 | static void | |
dc5dd1eb | 1378 | init_procfs_ops (void) |
61bb466e KW |
1379 | { |
1380 | procfs_ops.to_shortname = "procfs"; | |
1381 | procfs_ops.to_longname = "QNX Neutrino procfs child process"; | |
1382 | procfs_ops.to_doc = | |
1383 | "QNX Neutrino procfs child process (started by the \"run\" command).\n\ | |
1384 | target procfs <node>"; | |
1385 | procfs_ops.to_open = procfs_open; | |
1386 | procfs_ops.to_attach = procfs_attach; | |
1387 | procfs_ops.to_post_attach = procfs_post_attach; | |
1388 | procfs_ops.to_detach = procfs_detach; | |
1389 | procfs_ops.to_resume = procfs_resume; | |
1390 | procfs_ops.to_wait = procfs_wait; | |
1391 | procfs_ops.to_fetch_registers = procfs_fetch_registers; | |
1392 | procfs_ops.to_store_registers = procfs_store_registers; | |
1393 | procfs_ops.to_prepare_to_store = procfs_prepare_to_store; | |
c8e73a31 | 1394 | procfs_ops.deprecated_xfer_memory = procfs_xfer_memory; |
61bb466e KW |
1395 | procfs_ops.to_files_info = procfs_files_info; |
1396 | procfs_ops.to_insert_breakpoint = procfs_insert_breakpoint; | |
1397 | procfs_ops.to_remove_breakpoint = procfs_remove_breakpoint; | |
1398 | procfs_ops.to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint; | |
1399 | procfs_ops.to_insert_hw_breakpoint = procfs_insert_hw_breakpoint; | |
1400 | procfs_ops.to_remove_hw_breakpoint = procfs_remove_breakpoint; | |
1401 | procfs_ops.to_insert_watchpoint = procfs_insert_hw_watchpoint; | |
1402 | procfs_ops.to_remove_watchpoint = procfs_remove_hw_watchpoint; | |
1403 | procfs_ops.to_stopped_by_watchpoint = procfs_stopped_by_watchpoint; | |
1404 | procfs_ops.to_terminal_init = terminal_init_inferior; | |
1405 | procfs_ops.to_terminal_inferior = terminal_inferior; | |
1406 | procfs_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
1407 | procfs_ops.to_terminal_ours = terminal_ours; | |
1408 | procfs_ops.to_terminal_info = child_terminal_info; | |
1409 | procfs_ops.to_kill = procfs_kill_inferior; | |
1410 | procfs_ops.to_create_inferior = procfs_create_inferior; | |
1411 | procfs_ops.to_mourn_inferior = procfs_mourn_inferior; | |
1412 | procfs_ops.to_can_run = procfs_can_run; | |
2455069d | 1413 | procfs_ops.to_pass_signals = procfs_pass_signals; |
61bb466e KW |
1414 | procfs_ops.to_thread_alive = procfs_thread_alive; |
1415 | procfs_ops.to_find_new_threads = procfs_find_new_threads; | |
1416 | procfs_ops.to_pid_to_str = procfs_pid_to_str; | |
1417 | procfs_ops.to_stop = procfs_stop; | |
1418 | procfs_ops.to_stratum = process_stratum; | |
c35b1492 PA |
1419 | procfs_ops.to_has_all_memory = default_child_has_all_memory; |
1420 | procfs_ops.to_has_memory = default_child_has_memory; | |
1421 | procfs_ops.to_has_stack = default_child_has_stack; | |
1422 | procfs_ops.to_has_registers = default_child_has_registers; | |
1423 | procfs_ops.to_has_execution = default_child_has_execution; | |
61bb466e KW |
1424 | procfs_ops.to_magic = OPS_MAGIC; |
1425 | procfs_ops.to_have_continuable_watchpoint = 1; | |
745a434e | 1426 | procfs_ops.to_extra_thread_info = nto_extra_thread_info; |
61bb466e KW |
1427 | } |
1428 | ||
1429 | #define OSTYPE_NTO 1 | |
1430 | ||
1431 | void | |
dc5dd1eb | 1432 | _initialize_procfs (void) |
61bb466e KW |
1433 | { |
1434 | sigset_t set; | |
1435 | ||
1436 | init_procfs_ops (); | |
1437 | add_target (&procfs_ops); | |
1438 | ||
1439 | /* We use SIGUSR1 to gain control after we block waiting for a process. | |
1440 | We use sigwaitevent to wait. */ | |
1441 | sigemptyset (&set); | |
1442 | sigaddset (&set, SIGUSR1); | |
1443 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1444 | ||
2455069d UW |
1445 | /* Initially, make sure all signals are reported. */ |
1446 | sigfillset (&run.trace); | |
61bb466e KW |
1447 | |
1448 | /* Stuff some information. */ | |
1449 | nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags; | |
1450 | nto_cpuinfo_valid = 1; | |
1451 | ||
1bedd215 AC |
1452 | add_info ("pidlist", procfs_pidlist, _("pidlist")); |
1453 | add_info ("meminfo", procfs_meminfo, _("memory information")); | |
d737fd7f KW |
1454 | |
1455 | nto_is_nto_target = procfs_is_nto_target; | |
61bb466e KW |
1456 | } |
1457 | ||
1458 | ||
1459 | static int | |
1460 | procfs_hw_watchpoint (int addr, int len, int type) | |
1461 | { | |
1462 | procfs_break brk; | |
1463 | ||
1464 | switch (type) | |
1465 | { | |
1466 | case 1: /* Read. */ | |
1467 | brk.type = _DEBUG_BREAK_RD; | |
1468 | break; | |
1469 | case 2: /* Read/Write. */ | |
1470 | brk.type = _DEBUG_BREAK_RW; | |
1471 | break; | |
1472 | default: /* Modify. */ | |
1473 | /* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */ | |
1474 | brk.type = _DEBUG_BREAK_RW; | |
1475 | } | |
1476 | brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */ | |
1477 | brk.addr = addr; | |
1478 | brk.size = len; | |
1479 | ||
1480 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1481 | if (errno != EOK) | |
1482 | { | |
9b20d036 | 1483 | perror (_("Failed to set hardware watchpoint")); |
61bb466e KW |
1484 | return -1; |
1485 | } | |
1486 | return 0; | |
1487 | } | |
1488 | ||
1489 | static int | |
1490 | procfs_can_use_hw_breakpoint (int type, int cnt, int othertype) | |
1491 | { | |
1492 | return 1; | |
1493 | } | |
1494 | ||
1495 | static int | |
0cf6dd15 TJB |
1496 | procfs_remove_hw_watchpoint (CORE_ADDR addr, int len, int type, |
1497 | struct expression *cond) | |
61bb466e KW |
1498 | { |
1499 | return procfs_hw_watchpoint (addr, -1, type); | |
1500 | } | |
1501 | ||
1502 | static int | |
0cf6dd15 TJB |
1503 | procfs_insert_hw_watchpoint (CORE_ADDR addr, int len, int type, |
1504 | struct expression *cond) | |
61bb466e KW |
1505 | { |
1506 | return procfs_hw_watchpoint (addr, len, type); | |
1507 | } | |
1508 | ||
1509 | static int | |
1510 | procfs_stopped_by_watchpoint (void) | |
1511 | { | |
1512 | return 0; | |
1513 | } |