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" |
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 | ||
da82bd6b | 60 | static int procfs_can_run (struct target_ops *self); |
61bb466e | 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 | ||
5461485a TT |
70 | static int procfs_can_use_hw_breakpoint (struct target_ops *self, |
71 | int, int, int); | |
61bb466e | 72 | |
7bb99c53 TT |
73 | static int procfs_insert_hw_watchpoint (struct target_ops *self, |
74 | CORE_ADDR addr, int len, int type, | |
a8f42b45 | 75 | struct expression *cond); |
61bb466e | 76 | |
11b5219a TT |
77 | static int procfs_remove_hw_watchpoint (struct target_ops *self, |
78 | CORE_ADDR addr, int len, int type, | |
a8f42b45 | 79 | struct expression *cond); |
61bb466e | 80 | |
6a109b6b | 81 | static int procfs_stopped_by_watchpoint (struct target_ops *ops); |
61bb466e KW |
82 | |
83 | /* These two globals are only ever set in procfs_open(), but are | |
84 | referenced elsewhere. 'nto_procfs_node' is a flag used to say | |
85 | whether we are local, or we should get the current node descriptor | |
86 | for the remote QNX node. */ | |
87 | static char nto_procfs_path[PATH_MAX] = { "/proc" }; | |
88 | static unsigned nto_procfs_node = ND_LOCAL_NODE; | |
89 | ||
90 | /* Return the current QNX Node, or error out. This is a simple | |
91 | wrapper for the netmgr_strtond() function. The reason this | |
92 | is required is because QNX node descriptors are transient so | |
93 | we have to re-acquire them every time. */ | |
94 | static unsigned | |
d737fd7f | 95 | nto_node (void) |
61bb466e KW |
96 | { |
97 | unsigned node; | |
98 | ||
d737fd7f | 99 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0) |
61bb466e KW |
100 | return ND_LOCAL_NODE; |
101 | ||
d737fd7f | 102 | node = netmgr_strtond (nto_procfs_path, 0); |
61bb466e | 103 | if (node == -1) |
8a3fe4f8 | 104 | error (_("Lost the QNX node. Debug session probably over.")); |
61bb466e KW |
105 | |
106 | return (node); | |
107 | } | |
108 | ||
d737fd7f KW |
109 | static enum gdb_osabi |
110 | procfs_is_nto_target (bfd *abfd) | |
111 | { | |
112 | return GDB_OSABI_QNXNTO; | |
113 | } | |
114 | ||
61bb466e KW |
115 | /* This is called when we call 'target procfs <arg>' from the (gdb) prompt. |
116 | For QNX6 (nto), the only valid arg will be a QNX node string, | |
117 | eg: "/net/some_node". If arg is not a valid QNX node, we will | |
118 | default to local. */ | |
119 | static void | |
120 | procfs_open (char *arg, int from_tty) | |
121 | { | |
122 | char *nodestr; | |
123 | char *endstr; | |
124 | char buffer[50]; | |
125 | int fd, total_size; | |
126 | procfs_sysinfo *sysinfo; | |
9fe4a216 | 127 | struct cleanup *cleanups; |
61bb466e | 128 | |
d737fd7f KW |
129 | nto_is_nto_target = procfs_is_nto_target; |
130 | ||
61bb466e KW |
131 | /* Set the default node used for spawning to this one, |
132 | and only override it if there is a valid arg. */ | |
133 | ||
134 | nto_procfs_node = ND_LOCAL_NODE; | |
135 | nodestr = arg ? xstrdup (arg) : arg; | |
136 | ||
137 | init_thread_list (); | |
138 | ||
139 | if (nodestr) | |
140 | { | |
141 | nto_procfs_node = netmgr_strtond (nodestr, &endstr); | |
142 | if (nto_procfs_node == -1) | |
143 | { | |
144 | if (errno == ENOTSUP) | |
145 | printf_filtered ("QNX Net Manager not found.\n"); | |
146 | printf_filtered ("Invalid QNX node %s: error %d (%s).\n", nodestr, | |
dc5dd1eb | 147 | errno, safe_strerror (errno)); |
61bb466e KW |
148 | xfree (nodestr); |
149 | nodestr = NULL; | |
150 | nto_procfs_node = ND_LOCAL_NODE; | |
151 | } | |
152 | else if (*endstr) | |
153 | { | |
154 | if (*(endstr - 1) == '/') | |
155 | *(endstr - 1) = 0; | |
156 | else | |
157 | *endstr = 0; | |
158 | } | |
159 | } | |
d737fd7f KW |
160 | snprintf (nto_procfs_path, PATH_MAX - 1, "%s%s", nodestr ? nodestr : "", |
161 | "/proc"); | |
61bb466e KW |
162 | if (nodestr) |
163 | xfree (nodestr); | |
164 | ||
165 | fd = open (nto_procfs_path, O_RDONLY); | |
166 | if (fd == -1) | |
167 | { | |
168 | printf_filtered ("Error opening %s : %d (%s)\n", nto_procfs_path, errno, | |
dc5dd1eb | 169 | safe_strerror (errno)); |
8a3fe4f8 | 170 | error (_("Invalid procfs arg")); |
61bb466e | 171 | } |
9fe4a216 | 172 | cleanups = make_cleanup_close (fd); |
61bb466e KW |
173 | |
174 | sysinfo = (void *) buffer; | |
175 | if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, sizeof buffer, 0) != EOK) | |
176 | { | |
177 | printf_filtered ("Error getting size: %d (%s)\n", errno, | |
dc5dd1eb | 178 | safe_strerror (errno)); |
8a3fe4f8 | 179 | error (_("Devctl failed.")); |
61bb466e KW |
180 | } |
181 | else | |
182 | { | |
183 | total_size = sysinfo->total_size; | |
184 | sysinfo = alloca (total_size); | |
185 | if (!sysinfo) | |
186 | { | |
187 | printf_filtered ("Memory error: %d (%s)\n", errno, | |
dc5dd1eb | 188 | safe_strerror (errno)); |
8a3fe4f8 | 189 | error (_("alloca failed.")); |
61bb466e KW |
190 | } |
191 | else | |
192 | { | |
193 | if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, total_size, 0) != EOK) | |
194 | { | |
195 | printf_filtered ("Error getting sysinfo: %d (%s)\n", errno, | |
dc5dd1eb | 196 | safe_strerror (errno)); |
8a3fe4f8 | 197 | error (_("Devctl failed.")); |
61bb466e KW |
198 | } |
199 | else | |
200 | { | |
201 | if (sysinfo->type != | |
1143fffb | 202 | nto_map_arch_to_cputype (gdbarch_bfd_arch_info |
f5656ead | 203 | (target_gdbarch ())->arch_name)) |
9fe4a216 | 204 | error (_("Invalid target CPU.")); |
61bb466e KW |
205 | } |
206 | } | |
207 | } | |
9fe4a216 | 208 | do_cleanups (cleanups); |
61bb466e KW |
209 | printf_filtered ("Debugging using %s\n", nto_procfs_path); |
210 | } | |
211 | ||
212 | static void | |
213 | procfs_set_thread (ptid_t ptid) | |
214 | { | |
215 | pid_t tid; | |
216 | ||
217 | tid = ptid_get_tid (ptid); | |
218 | devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0); | |
219 | } | |
220 | ||
221 | /* Return nonzero if the thread TH is still alive. */ | |
222 | static int | |
28439f5e | 223 | procfs_thread_alive (struct target_ops *ops, ptid_t ptid) |
61bb466e KW |
224 | { |
225 | pid_t tid; | |
745a434e AR |
226 | pid_t pid; |
227 | procfs_status status; | |
228 | int err; | |
61bb466e KW |
229 | |
230 | tid = ptid_get_tid (ptid); | |
745a434e AR |
231 | pid = ptid_get_pid (ptid); |
232 | ||
233 | if (kill (pid, 0) == -1) | |
234 | return 0; | |
235 | ||
236 | status.tid = tid; | |
237 | if ((err = devctl (ctl_fd, DCMD_PROC_TIDSTATUS, | |
238 | &status, sizeof (status), 0)) != EOK) | |
239 | return 0; | |
240 | ||
241 | /* Thread is alive or dead but not yet joined, | |
242 | or dead and there is an alive (or dead unjoined) thread with | |
243 | higher tid. | |
244 | ||
245 | If the tid is not the same as requested, requested tid is dead. */ | |
246 | return (status.tid == tid) && (status.state != STATE_DEAD); | |
247 | } | |
248 | ||
249 | static void | |
250 | update_thread_private_data_name (struct thread_info *new_thread, | |
251 | const char *newname) | |
252 | { | |
253 | int newnamelen; | |
254 | struct private_thread_info *pti; | |
255 | ||
256 | gdb_assert (newname != NULL); | |
257 | gdb_assert (new_thread != NULL); | |
258 | newnamelen = strlen (newname); | |
259 | if (!new_thread->private) | |
260 | { | |
261 | new_thread->private = xmalloc (offsetof (struct private_thread_info, | |
262 | name) | |
263 | + newnamelen + 1); | |
264 | memcpy (new_thread->private->name, newname, newnamelen + 1); | |
265 | } | |
266 | else if (strcmp (newname, new_thread->private->name) != 0) | |
267 | { | |
268 | /* Reallocate if neccessary. */ | |
269 | int oldnamelen = strlen (new_thread->private->name); | |
270 | ||
271 | if (oldnamelen < newnamelen) | |
272 | new_thread->private = xrealloc (new_thread->private, | |
273 | offsetof (struct private_thread_info, | |
274 | name) | |
275 | + newnamelen + 1); | |
276 | memcpy (new_thread->private->name, newname, newnamelen + 1); | |
277 | } | |
278 | } | |
279 | ||
280 | static void | |
281 | update_thread_private_data (struct thread_info *new_thread, | |
282 | pthread_t tid, int state, int flags) | |
283 | { | |
284 | struct private_thread_info *pti; | |
285 | procfs_info pidinfo; | |
286 | struct _thread_name *tn; | |
287 | procfs_threadctl tctl; | |
288 | ||
289 | #if _NTO_VERSION > 630 | |
290 | gdb_assert (new_thread != NULL); | |
291 | ||
292 | if (devctl (ctl_fd, DCMD_PROC_INFO, &pidinfo, | |
293 | sizeof(pidinfo), 0) != EOK) | |
294 | return; | |
295 | ||
296 | memset (&tctl, 0, sizeof (tctl)); | |
297 | tctl.cmd = _NTO_TCTL_NAME; | |
298 | tn = (struct _thread_name *) (&tctl.data); | |
299 | ||
300 | /* Fetch name for the given thread. */ | |
301 | tctl.tid = tid; | |
302 | tn->name_buf_len = sizeof (tctl.data) - sizeof (*tn); | |
303 | tn->new_name_len = -1; /* Getting, not setting. */ | |
304 | if (devctl (ctl_fd, DCMD_PROC_THREADCTL, &tctl, sizeof (tctl), NULL) != EOK) | |
305 | tn->name_buf[0] = '\0'; | |
306 | ||
307 | tn->name_buf[_NTO_THREAD_NAME_MAX] = '\0'; | |
308 | ||
309 | update_thread_private_data_name (new_thread, tn->name_buf); | |
310 | ||
311 | pti = (struct private_thread_info *) new_thread->private; | |
312 | pti->tid = tid; | |
313 | pti->state = state; | |
314 | pti->flags = flags; | |
315 | #endif /* _NTO_VERSION */ | |
61bb466e KW |
316 | } |
317 | ||
94c74239 | 318 | static void |
28439f5e | 319 | procfs_find_new_threads (struct target_ops *ops) |
61bb466e KW |
320 | { |
321 | procfs_status status; | |
322 | pid_t pid; | |
323 | ptid_t ptid; | |
745a434e AR |
324 | pthread_t tid; |
325 | struct thread_info *new_thread; | |
61bb466e KW |
326 | |
327 | if (ctl_fd == -1) | |
328 | return; | |
329 | ||
330 | pid = ptid_get_pid (inferior_ptid); | |
331 | ||
745a434e AR |
332 | status.tid = 1; |
333 | ||
334 | for (tid = 1;; ++tid) | |
61bb466e | 335 | { |
745a434e AR |
336 | if (status.tid == tid |
337 | && (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0) | |
338 | != EOK)) | |
61bb466e | 339 | break; |
745a434e AR |
340 | if (status.tid != tid) |
341 | /* The reason why this would not be equal is that devctl might have | |
342 | returned different tid, meaning the requested tid no longer exists | |
343 | (e.g. thread exited). */ | |
344 | continue; | |
345 | ptid = ptid_build (pid, 0, tid); | |
346 | new_thread = find_thread_ptid (ptid); | |
347 | if (!new_thread) | |
348 | new_thread = add_thread (ptid); | |
349 | update_thread_private_data (new_thread, tid, status.state, 0); | |
350 | status.tid++; | |
61bb466e KW |
351 | } |
352 | return; | |
353 | } | |
354 | ||
9fe4a216 TT |
355 | static void |
356 | do_closedir_cleanup (void *dir) | |
357 | { | |
358 | closedir (dir); | |
359 | } | |
360 | ||
61bb466e KW |
361 | void |
362 | procfs_pidlist (char *args, int from_tty) | |
363 | { | |
364 | DIR *dp = NULL; | |
365 | struct dirent *dirp = NULL; | |
61bb466e KW |
366 | char buf[512]; |
367 | procfs_info *pidinfo = NULL; | |
368 | procfs_debuginfo *info = NULL; | |
369 | procfs_status *status = NULL; | |
370 | pid_t num_threads = 0; | |
371 | pid_t pid; | |
372 | char name[512]; | |
9fe4a216 | 373 | struct cleanup *cleanups; |
61bb466e KW |
374 | |
375 | dp = opendir (nto_procfs_path); | |
376 | if (dp == NULL) | |
377 | { | |
dc5dd1eb | 378 | fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)", |
d737fd7f | 379 | nto_procfs_path, errno, safe_strerror (errno)); |
61bb466e KW |
380 | return; |
381 | } | |
382 | ||
9fe4a216 TT |
383 | cleanups = make_cleanup (do_closedir_cleanup, dp); |
384 | ||
61bb466e KW |
385 | /* Start scan at first pid. */ |
386 | rewinddir (dp); | |
387 | ||
388 | do | |
389 | { | |
9fe4a216 TT |
390 | int fd; |
391 | struct cleanup *inner_cleanup; | |
392 | ||
61bb466e KW |
393 | /* Get the right pid and procfs path for the pid. */ |
394 | do | |
395 | { | |
396 | dirp = readdir (dp); | |
397 | if (dirp == NULL) | |
398 | { | |
9fe4a216 | 399 | do_cleanups (cleanups); |
61bb466e KW |
400 | return; |
401 | } | |
dc5dd1eb | 402 | snprintf (buf, 511, "%s/%s/as", nto_procfs_path, dirp->d_name); |
61bb466e KW |
403 | pid = atoi (dirp->d_name); |
404 | } | |
405 | while (pid == 0); | |
406 | ||
0df8b418 | 407 | /* Open the procfs path. */ |
61bb466e KW |
408 | fd = open (buf, O_RDONLY); |
409 | if (fd == -1) | |
410 | { | |
dc5dd1eb | 411 | fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n", |
d737fd7f | 412 | buf, errno, safe_strerror (errno)); |
9fe4a216 | 413 | do_cleanups (cleanups); |
61bb466e KW |
414 | return; |
415 | } | |
9fe4a216 | 416 | inner_cleanup = make_cleanup_close (fd); |
61bb466e KW |
417 | |
418 | pidinfo = (procfs_info *) buf; | |
419 | if (devctl (fd, DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK) | |
420 | { | |
dc5dd1eb | 421 | fprintf_unfiltered (gdb_stderr, |
d737fd7f KW |
422 | "devctl DCMD_PROC_INFO failed - %d (%s)\n", |
423 | errno, safe_strerror (errno)); | |
61bb466e KW |
424 | break; |
425 | } | |
426 | num_threads = pidinfo->num_threads; | |
427 | ||
428 | info = (procfs_debuginfo *) buf; | |
429 | if (devctl (fd, DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0) != EOK) | |
430 | strcpy (name, "unavailable"); | |
431 | else | |
432 | strcpy (name, info->path); | |
433 | ||
434 | /* Collect state info on all the threads. */ | |
435 | status = (procfs_status *) buf; | |
436 | for (status->tid = 1; status->tid <= num_threads; status->tid++) | |
437 | { | |
438 | if (devctl (fd, DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0) != EOK | |
439 | && status->tid != 0) | |
440 | break; | |
441 | if (status->tid != 0) | |
442 | printf_filtered ("%s - %d/%d\n", name, pid, status->tid); | |
443 | } | |
9fe4a216 TT |
444 | |
445 | do_cleanups (inner_cleanup); | |
61bb466e KW |
446 | } |
447 | while (dirp != NULL); | |
448 | ||
9fe4a216 | 449 | do_cleanups (cleanups); |
61bb466e KW |
450 | return; |
451 | } | |
452 | ||
453 | void | |
454 | procfs_meminfo (char *args, int from_tty) | |
455 | { | |
456 | procfs_mapinfo *mapinfos = NULL; | |
457 | static int num_mapinfos = 0; | |
458 | procfs_mapinfo *mapinfo_p, *mapinfo_p2; | |
459 | int flags = ~0, err, num, i, j; | |
460 | ||
461 | struct | |
462 | { | |
463 | procfs_debuginfo info; | |
464 | char buff[_POSIX_PATH_MAX]; | |
465 | } map; | |
466 | ||
467 | struct info | |
468 | { | |
469 | unsigned addr; | |
470 | unsigned size; | |
471 | unsigned flags; | |
472 | unsigned debug_vaddr; | |
473 | unsigned long long offset; | |
474 | }; | |
475 | ||
476 | struct printinfo | |
477 | { | |
478 | unsigned long long ino; | |
479 | unsigned dev; | |
480 | struct info text; | |
481 | struct info data; | |
482 | char name[256]; | |
483 | } printme; | |
484 | ||
485 | /* Get the number of map entrys. */ | |
486 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num); | |
487 | if (err != EOK) | |
488 | { | |
d737fd7f KW |
489 | printf ("failed devctl num mapinfos - %d (%s)\n", err, |
490 | safe_strerror (err)); | |
61bb466e KW |
491 | return; |
492 | } | |
493 | ||
494 | mapinfos = xmalloc (num * sizeof (procfs_mapinfo)); | |
495 | ||
496 | num_mapinfos = num; | |
497 | mapinfo_p = mapinfos; | |
498 | ||
499 | /* Fill the map entrys. */ | |
500 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, mapinfo_p, num | |
501 | * sizeof (procfs_mapinfo), &num); | |
502 | if (err != EOK) | |
503 | { | |
5483d879 | 504 | printf ("failed devctl mapinfos - %d (%s)\n", err, safe_strerror (err)); |
61bb466e KW |
505 | xfree (mapinfos); |
506 | return; | |
507 | } | |
508 | ||
509 | num = min (num, num_mapinfos); | |
510 | ||
511 | /* Run through the list of mapinfos, and store the data and text info | |
512 | so we can print it at the bottom of the loop. */ | |
513 | for (mapinfo_p = mapinfos, i = 0; i < num; i++, mapinfo_p++) | |
514 | { | |
515 | if (!(mapinfo_p->flags & flags)) | |
516 | mapinfo_p->ino = 0; | |
517 | ||
518 | if (mapinfo_p->ino == 0) /* Already visited. */ | |
519 | continue; | |
520 | ||
521 | map.info.vaddr = mapinfo_p->vaddr; | |
522 | ||
523 | err = devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
524 | if (err != EOK) | |
525 | continue; | |
526 | ||
527 | memset (&printme, 0, sizeof printme); | |
528 | printme.dev = mapinfo_p->dev; | |
529 | printme.ino = mapinfo_p->ino; | |
530 | printme.text.addr = mapinfo_p->vaddr; | |
531 | printme.text.size = mapinfo_p->size; | |
532 | printme.text.flags = mapinfo_p->flags; | |
533 | printme.text.offset = mapinfo_p->offset; | |
534 | printme.text.debug_vaddr = map.info.vaddr; | |
535 | strcpy (printme.name, map.info.path); | |
536 | ||
537 | /* Check for matching data. */ | |
538 | for (mapinfo_p2 = mapinfos, j = 0; j < num; j++, mapinfo_p2++) | |
539 | { | |
540 | if (mapinfo_p2->vaddr != mapinfo_p->vaddr | |
541 | && mapinfo_p2->ino == mapinfo_p->ino | |
542 | && mapinfo_p2->dev == mapinfo_p->dev) | |
543 | { | |
544 | map.info.vaddr = mapinfo_p2->vaddr; | |
545 | err = | |
546 | devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
547 | if (err != EOK) | |
548 | continue; | |
549 | ||
550 | if (strcmp (map.info.path, printme.name)) | |
551 | continue; | |
552 | ||
553 | /* Lower debug_vaddr is always text, if nessessary, swap. */ | |
554 | if ((int) map.info.vaddr < (int) printme.text.debug_vaddr) | |
555 | { | |
556 | memcpy (&(printme.data), &(printme.text), | |
557 | sizeof (printme.data)); | |
558 | printme.text.addr = mapinfo_p2->vaddr; | |
559 | printme.text.size = mapinfo_p2->size; | |
560 | printme.text.flags = mapinfo_p2->flags; | |
561 | printme.text.offset = mapinfo_p2->offset; | |
562 | printme.text.debug_vaddr = map.info.vaddr; | |
563 | } | |
564 | else | |
565 | { | |
566 | printme.data.addr = mapinfo_p2->vaddr; | |
567 | printme.data.size = mapinfo_p2->size; | |
568 | printme.data.flags = mapinfo_p2->flags; | |
569 | printme.data.offset = mapinfo_p2->offset; | |
570 | printme.data.debug_vaddr = map.info.vaddr; | |
571 | } | |
572 | mapinfo_p2->ino = 0; | |
573 | } | |
574 | } | |
575 | mapinfo_p->ino = 0; | |
576 | ||
577 | printf_filtered ("%s\n", printme.name); | |
578 | printf_filtered ("\ttext=%08x bytes @ 0x%08x\n", printme.text.size, | |
579 | printme.text.addr); | |
580 | printf_filtered ("\t\tflags=%08x\n", printme.text.flags); | |
581 | printf_filtered ("\t\tdebug=%08x\n", printme.text.debug_vaddr); | |
2244ba2e | 582 | printf_filtered ("\t\toffset=%s\n", phex (printme.text.offset, 8)); |
61bb466e KW |
583 | if (printme.data.size) |
584 | { | |
585 | printf_filtered ("\tdata=%08x bytes @ 0x%08x\n", printme.data.size, | |
586 | printme.data.addr); | |
587 | printf_filtered ("\t\tflags=%08x\n", printme.data.flags); | |
588 | printf_filtered ("\t\tdebug=%08x\n", printme.data.debug_vaddr); | |
2244ba2e | 589 | printf_filtered ("\t\toffset=%s\n", phex (printme.data.offset, 8)); |
61bb466e KW |
590 | } |
591 | printf_filtered ("\tdev=0x%x\n", printme.dev); | |
592 | printf_filtered ("\tino=0x%x\n", (unsigned int) printme.ino); | |
593 | } | |
594 | xfree (mapinfos); | |
595 | return; | |
596 | } | |
597 | ||
598 | /* Print status information about what we're accessing. */ | |
599 | static void | |
600 | procfs_files_info (struct target_ops *ignore) | |
601 | { | |
181e7f93 PA |
602 | struct inferior *inf = current_inferior (); |
603 | ||
61bb466e | 604 | printf_unfiltered ("\tUsing the running image of %s %s via %s.\n", |
3fdfcbf1 | 605 | inf->attach_flag ? "attached" : "child", |
61bb466e KW |
606 | target_pid_to_str (inferior_ptid), nto_procfs_path); |
607 | } | |
608 | ||
0df8b418 MS |
609 | /* Mark our target-struct as eligible for stray "run" and "attach" |
610 | commands. */ | |
61bb466e | 611 | static int |
da82bd6b | 612 | procfs_can_run (struct target_ops *self) |
61bb466e KW |
613 | { |
614 | return 1; | |
615 | } | |
616 | ||
617 | /* Attach to process PID, then initialize for debugging it. */ | |
618 | static void | |
136d6dae | 619 | procfs_attach (struct target_ops *ops, char *args, int from_tty) |
61bb466e KW |
620 | { |
621 | char *exec_file; | |
622 | int pid; | |
181e7f93 | 623 | struct inferior *inf; |
61bb466e | 624 | |
74164c56 | 625 | pid = parse_pid_to_attach (args); |
61bb466e KW |
626 | |
627 | if (pid == getpid ()) | |
8a3fe4f8 | 628 | error (_("Attaching GDB to itself is not a good idea...")); |
61bb466e KW |
629 | |
630 | if (from_tty) | |
631 | { | |
632 | exec_file = (char *) get_exec_file (0); | |
633 | ||
634 | if (exec_file) | |
635 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
636 | target_pid_to_str (pid_to_ptid (pid))); | |
637 | else | |
638 | printf_unfiltered ("Attaching to %s\n", | |
639 | target_pid_to_str (pid_to_ptid (pid))); | |
640 | ||
641 | gdb_flush (gdb_stdout); | |
642 | } | |
643 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
6c95b8df PA |
644 | inf = current_inferior (); |
645 | inferior_appeared (inf, pid); | |
181e7f93 | 646 | inf->attach_flag = 1; |
7f9f62ba | 647 | |
28439f5e | 648 | push_target (ops); |
7f9f62ba | 649 | |
28439f5e | 650 | procfs_find_new_threads (ops); |
61bb466e KW |
651 | } |
652 | ||
653 | static void | |
f045800c | 654 | procfs_post_attach (struct target_ops *self, pid_t pid) |
61bb466e | 655 | { |
61bb466e | 656 | if (exec_bfd) |
268a4a75 | 657 | solib_create_inferior_hook (0); |
61bb466e KW |
658 | } |
659 | ||
660 | static ptid_t | |
661 | do_attach (ptid_t ptid) | |
662 | { | |
663 | procfs_status status; | |
664 | struct sigevent event; | |
dc5dd1eb | 665 | char path[PATH_MAX]; |
61bb466e | 666 | |
dfd4cc63 LM |
667 | snprintf (path, PATH_MAX - 1, "%s/%d/as", nto_procfs_path, |
668 | ptid_get_pid (ptid)); | |
61bb466e KW |
669 | ctl_fd = open (path, O_RDWR); |
670 | if (ctl_fd == -1) | |
8a3fe4f8 | 671 | error (_("Couldn't open proc file %s, error %d (%s)"), path, errno, |
dc5dd1eb | 672 | safe_strerror (errno)); |
61bb466e | 673 | if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK) |
8a3fe4f8 | 674 | error (_("Couldn't stop process")); |
61bb466e KW |
675 | |
676 | /* Define a sigevent for process stopped notification. */ | |
677 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
678 | event.sigev_signo = SIGUSR1; | |
679 | event.sigev_code = 0; | |
680 | event.sigev_value.sival_ptr = NULL; | |
681 | event.sigev_priority = -1; | |
682 | devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0); | |
683 | ||
684 | if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK | |
685 | && status.flags & _DEBUG_FLAG_STOPPED) | |
dfd4cc63 | 686 | SignalKill (nto_node (), ptid_get_pid (ptid), 0, SIGCONT, 0, 0); |
61bb466e | 687 | nto_init_solib_absolute_prefix (); |
dfd4cc63 | 688 | return ptid_build (ptid_get_pid (ptid), 0, status.tid); |
61bb466e KW |
689 | } |
690 | ||
691 | /* Ask the user what to do when an interrupt is received. */ | |
692 | static void | |
dc5dd1eb | 693 | interrupt_query (void) |
61bb466e KW |
694 | { |
695 | target_terminal_ours (); | |
696 | ||
9e2f0ad4 HZ |
697 | if (query (_("Interrupted while waiting for the program.\n\ |
698 | Give up (and stop debugging it)? "))) | |
61bb466e KW |
699 | { |
700 | target_mourn_inferior (); | |
039e3c22 | 701 | quit (); |
61bb466e KW |
702 | } |
703 | ||
704 | target_terminal_inferior (); | |
705 | } | |
706 | ||
707 | /* The user typed ^C twice. */ | |
708 | static void | |
709 | nto_interrupt_twice (int signo) | |
710 | { | |
711 | signal (signo, ofunc); | |
712 | interrupt_query (); | |
713 | signal (signo, nto_interrupt_twice); | |
714 | } | |
715 | ||
716 | static void | |
717 | nto_interrupt (int signo) | |
718 | { | |
719 | /* If this doesn't work, try more severe steps. */ | |
720 | signal (signo, nto_interrupt_twice); | |
721 | ||
f9c72d52 | 722 | target_stop (inferior_ptid); |
61bb466e KW |
723 | } |
724 | ||
725 | static ptid_t | |
117de6a9 | 726 | procfs_wait (struct target_ops *ops, |
47608cb1 | 727 | ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
61bb466e KW |
728 | { |
729 | sigset_t set; | |
730 | siginfo_t info; | |
731 | procfs_status status; | |
732 | static int exit_signo = 0; /* To track signals that cause termination. */ | |
733 | ||
734 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
735 | ||
736 | if (ptid_equal (inferior_ptid, null_ptid)) | |
737 | { | |
738 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 739 | ourstatus->value.sig = GDB_SIGNAL_0; |
61bb466e KW |
740 | exit_signo = 0; |
741 | return null_ptid; | |
742 | } | |
743 | ||
744 | sigemptyset (&set); | |
745 | sigaddset (&set, SIGUSR1); | |
746 | ||
747 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
748 | while (!(status.flags & _DEBUG_FLAG_ISTOP)) | |
749 | { | |
750 | ofunc = (void (*)()) signal (SIGINT, nto_interrupt); | |
751 | sigwaitinfo (&set, &info); | |
752 | signal (SIGINT, ofunc); | |
753 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
754 | } | |
755 | ||
756 | if (status.flags & _DEBUG_FLAG_SSTEP) | |
757 | { | |
758 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 759 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
760 | } |
761 | /* Was it a breakpoint? */ | |
762 | else if (status.flags & _DEBUG_FLAG_TRACE) | |
763 | { | |
764 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 765 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
766 | } |
767 | else if (status.flags & _DEBUG_FLAG_ISTOP) | |
768 | { | |
769 | switch (status.why) | |
770 | { | |
771 | case _DEBUG_WHY_SIGNALLED: | |
772 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
773 | ourstatus->value.sig = | |
2ea28649 | 774 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
775 | exit_signo = 0; |
776 | break; | |
777 | case _DEBUG_WHY_FAULTED: | |
778 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
779 | if (status.info.si_signo == SIGTRAP) | |
780 | { | |
781 | ourstatus->value.sig = 0; | |
782 | exit_signo = 0; | |
783 | } | |
784 | else | |
785 | { | |
786 | ourstatus->value.sig = | |
2ea28649 | 787 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
788 | exit_signo = ourstatus->value.sig; |
789 | } | |
790 | break; | |
791 | ||
792 | case _DEBUG_WHY_TERMINATED: | |
793 | { | |
794 | int waitval = 0; | |
795 | ||
dfd4cc63 | 796 | waitpid (ptid_get_pid (inferior_ptid), &waitval, WNOHANG); |
61bb466e KW |
797 | if (exit_signo) |
798 | { | |
799 | /* Abnormal death. */ | |
800 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
801 | ourstatus->value.sig = exit_signo; | |
802 | } | |
803 | else | |
804 | { | |
805 | /* Normal death. */ | |
806 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
807 | ourstatus->value.integer = WEXITSTATUS (waitval); | |
808 | } | |
809 | exit_signo = 0; | |
810 | break; | |
811 | } | |
812 | ||
813 | case _DEBUG_WHY_REQUESTED: | |
814 | /* We are assuming a requested stop is due to a SIGINT. */ | |
815 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 816 | ourstatus->value.sig = GDB_SIGNAL_INT; |
61bb466e KW |
817 | exit_signo = 0; |
818 | break; | |
819 | } | |
820 | } | |
821 | ||
a6a7f2a5 | 822 | return ptid_build (status.pid, 0, status.tid); |
61bb466e KW |
823 | } |
824 | ||
825 | /* Read the current values of the inferior's registers, both the | |
826 | general register set and floating point registers (if supported) | |
827 | and update gdb's idea of their current values. */ | |
828 | static void | |
28439f5e PA |
829 | procfs_fetch_registers (struct target_ops *ops, |
830 | struct regcache *regcache, int regno) | |
61bb466e KW |
831 | { |
832 | union | |
833 | { | |
834 | procfs_greg greg; | |
835 | procfs_fpreg fpreg; | |
836 | procfs_altreg altreg; | |
837 | } | |
838 | reg; | |
839 | int regsize; | |
840 | ||
841 | procfs_set_thread (inferior_ptid); | |
842 | if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK) | |
56be3814 | 843 | nto_supply_gregset (regcache, (char *) ®.greg); |
61bb466e KW |
844 | if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size) |
845 | == EOK) | |
56be3814 | 846 | nto_supply_fpregset (regcache, (char *) ®.fpreg); |
61bb466e KW |
847 | if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size) |
848 | == EOK) | |
56be3814 | 849 | nto_supply_altregset (regcache, (char *) ®.altreg); |
61bb466e KW |
850 | } |
851 | ||
852 | /* Copy LEN bytes to/from inferior's memory starting at MEMADDR | |
853 | from/to debugger memory starting at MYADDR. Copy from inferior | |
854 | if DOWRITE is zero or to inferior if DOWRITE is nonzero. | |
855 | ||
856 | Returns the length copied, which is either the LEN argument or | |
857 | zero. This xfer function does not do partial moves, since procfs_ops | |
858 | doesn't allow memory operations to cross below us in the target stack | |
859 | anyway. */ | |
860 | static int | |
14ef7606 | 861 | procfs_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int dowrite, |
61bb466e KW |
862 | struct mem_attrib *attrib, struct target_ops *target) |
863 | { | |
864 | int nbytes = 0; | |
865 | ||
866 | if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) == (off_t) memaddr) | |
867 | { | |
868 | if (dowrite) | |
869 | nbytes = write (ctl_fd, myaddr, len); | |
870 | else | |
871 | nbytes = read (ctl_fd, myaddr, len); | |
872 | if (nbytes < 0) | |
873 | nbytes = 0; | |
874 | } | |
875 | return (nbytes); | |
876 | } | |
877 | ||
878 | /* Take a program previously attached to and detaches it. | |
879 | The program resumes execution and will no longer stop | |
880 | on signals, etc. We'd better not have left any breakpoints | |
881 | in the program or it'll die when it hits one. */ | |
882 | static void | |
52554a0e | 883 | procfs_detach (struct target_ops *ops, const char *args, int from_tty) |
61bb466e KW |
884 | { |
885 | int siggnal = 0; | |
7f9f62ba | 886 | int pid; |
61bb466e KW |
887 | |
888 | if (from_tty) | |
889 | { | |
890 | char *exec_file = get_exec_file (0); | |
891 | if (exec_file == 0) | |
892 | exec_file = ""; | |
893 | printf_unfiltered ("Detaching from program: %s %s\n", | |
894 | exec_file, target_pid_to_str (inferior_ptid)); | |
895 | gdb_flush (gdb_stdout); | |
896 | } | |
897 | if (args) | |
898 | siggnal = atoi (args); | |
899 | ||
900 | if (siggnal) | |
dfd4cc63 | 901 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, siggnal, 0, 0); |
61bb466e KW |
902 | |
903 | close (ctl_fd); | |
904 | ctl_fd = -1; | |
7f9f62ba PA |
905 | |
906 | pid = ptid_get_pid (inferior_ptid); | |
61bb466e | 907 | inferior_ptid = null_ptid; |
7f9f62ba PA |
908 | detach_inferior (pid); |
909 | init_thread_list (); | |
61bb466e KW |
910 | unpush_target (&procfs_ops); /* Pop out of handling an inferior. */ |
911 | } | |
912 | ||
913 | static int | |
914 | procfs_breakpoint (CORE_ADDR addr, int type, int size) | |
915 | { | |
916 | procfs_break brk; | |
917 | ||
918 | brk.type = type; | |
919 | brk.addr = addr; | |
920 | brk.size = size; | |
921 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
922 | if (errno != EOK) | |
923 | return 1; | |
924 | return 0; | |
925 | } | |
926 | ||
927 | static int | |
3db08215 | 928 | procfs_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 929 | struct bp_target_info *bp_tgt) |
61bb466e | 930 | { |
8181d85f | 931 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, 0); |
61bb466e KW |
932 | } |
933 | ||
934 | static int | |
3db08215 | 935 | procfs_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 936 | struct bp_target_info *bp_tgt) |
61bb466e | 937 | { |
8181d85f | 938 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, -1); |
61bb466e KW |
939 | } |
940 | ||
941 | static int | |
23a26771 | 942 | procfs_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 943 | struct bp_target_info *bp_tgt) |
61bb466e | 944 | { |
8181d85f DJ |
945 | return procfs_breakpoint (bp_tgt->placed_address, |
946 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0); | |
61bb466e KW |
947 | } |
948 | ||
949 | static int | |
a6d9a66e UW |
950 | procfs_remove_hw_breakpoint (struct gdbarch *gdbarch, |
951 | struct bp_target_info *bp_tgt) | |
61bb466e | 952 | { |
8181d85f DJ |
953 | return procfs_breakpoint (bp_tgt->placed_address, |
954 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1); | |
61bb466e KW |
955 | } |
956 | ||
957 | static void | |
28439f5e | 958 | procfs_resume (struct target_ops *ops, |
2ea28649 | 959 | ptid_t ptid, int step, enum gdb_signal signo) |
61bb466e KW |
960 | { |
961 | int signal_to_pass; | |
962 | procfs_status status; | |
14ef7606 | 963 | sigset_t *run_fault = (sigset_t *) (void *) &run.fault; |
61bb466e KW |
964 | |
965 | if (ptid_equal (inferior_ptid, null_ptid)) | |
966 | return; | |
967 | ||
968 | procfs_set_thread (ptid_equal (ptid, minus_one_ptid) ? inferior_ptid : | |
969 | ptid); | |
970 | ||
971 | run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE; | |
972 | if (step) | |
973 | run.flags |= _DEBUG_RUN_STEP; | |
974 | ||
14ef7606 AR |
975 | sigemptyset (run_fault); |
976 | sigaddset (run_fault, FLTBPT); | |
977 | sigaddset (run_fault, FLTTRACE); | |
978 | sigaddset (run_fault, FLTILL); | |
979 | sigaddset (run_fault, FLTPRIV); | |
980 | sigaddset (run_fault, FLTBOUNDS); | |
981 | sigaddset (run_fault, FLTIOVF); | |
982 | sigaddset (run_fault, FLTIZDIV); | |
983 | sigaddset (run_fault, FLTFPE); | |
61bb466e | 984 | /* Peter V will be changing this at some point. */ |
14ef7606 | 985 | sigaddset (run_fault, FLTPAGE); |
61bb466e KW |
986 | |
987 | run.flags |= _DEBUG_RUN_ARM; | |
988 | ||
2ea28649 | 989 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
990 | |
991 | if (signal_to_pass) | |
992 | { | |
993 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
2ea28649 | 994 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
995 | if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED)) |
996 | { | |
997 | if (signal_to_pass != status.info.si_signo) | |
998 | { | |
dfd4cc63 | 999 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, |
d737fd7f | 1000 | signal_to_pass, 0, 0); |
61bb466e KW |
1001 | run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG; |
1002 | } | |
0df8b418 | 1003 | else /* Let it kill the program without telling us. */ |
61bb466e KW |
1004 | sigdelset (&run.trace, signal_to_pass); |
1005 | } | |
1006 | } | |
1007 | else | |
1008 | run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT; | |
1009 | ||
1010 | errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0); | |
1011 | if (errno != EOK) | |
1012 | { | |
9b20d036 | 1013 | perror (_("run error!\n")); |
61bb466e KW |
1014 | return; |
1015 | } | |
1016 | } | |
1017 | ||
1018 | static void | |
136d6dae | 1019 | procfs_mourn_inferior (struct target_ops *ops) |
61bb466e KW |
1020 | { |
1021 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
1022 | { | |
dfd4cc63 | 1023 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, SIGKILL, 0, 0); |
61bb466e KW |
1024 | close (ctl_fd); |
1025 | } | |
1026 | inferior_ptid = null_ptid; | |
1027 | init_thread_list (); | |
1028 | unpush_target (&procfs_ops); | |
1029 | generic_mourn_inferior (); | |
61bb466e KW |
1030 | } |
1031 | ||
1032 | /* This function breaks up an argument string into an argument | |
1033 | vector suitable for passing to execvp(). | |
1034 | E.g., on "run a b c d" this routine would get as input | |
1035 | the string "a b c d", and as output it would fill in argv with | |
1036 | the four arguments "a", "b", "c", "d". The only additional | |
1037 | functionality is simple quoting. The gdb command: | |
1038 | run a "b c d" f | |
1039 | will fill in argv with the three args "a", "b c d", "e". */ | |
1040 | static void | |
1041 | breakup_args (char *scratch, char **argv) | |
1042 | { | |
1043 | char *pp, *cp = scratch; | |
1044 | char quoting = 0; | |
1045 | ||
1046 | for (;;) | |
1047 | { | |
1048 | /* Scan past leading separators. */ | |
1049 | quoting = 0; | |
1050 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') | |
1051 | cp++; | |
1052 | ||
1053 | /* Break if at end of string. */ | |
1054 | if (*cp == '\0') | |
1055 | break; | |
1056 | ||
1057 | /* Take an arg. */ | |
1058 | if (*cp == '"') | |
1059 | { | |
1060 | cp++; | |
1061 | quoting = strchr (cp, '"') ? 1 : 0; | |
1062 | } | |
1063 | ||
1064 | *argv++ = cp; | |
1065 | ||
1066 | /* Scan for next arg separator. */ | |
1067 | pp = cp; | |
1068 | if (quoting) | |
1069 | cp = strchr (pp, '"'); | |
1070 | if ((cp == NULL) || (!quoting)) | |
1071 | cp = strchr (pp, ' '); | |
1072 | if (cp == NULL) | |
1073 | cp = strchr (pp, '\t'); | |
1074 | if (cp == NULL) | |
1075 | cp = strchr (pp, '\n'); | |
1076 | ||
1077 | /* No separators => end of string => break. */ | |
1078 | if (cp == NULL) | |
1079 | { | |
1080 | pp = cp; | |
1081 | break; | |
1082 | } | |
1083 | ||
1084 | /* Replace the separator with a terminator. */ | |
1085 | *cp++ = '\0'; | |
1086 | } | |
1087 | ||
1088 | /* Execv requires a null-terminated arg vector. */ | |
1089 | *argv = NULL; | |
1090 | } | |
1091 | ||
1092 | static void | |
136d6dae VP |
1093 | procfs_create_inferior (struct target_ops *ops, char *exec_file, |
1094 | char *allargs, char **env, int from_tty) | |
61bb466e KW |
1095 | { |
1096 | struct inheritance inherit; | |
1097 | pid_t pid; | |
1098 | int flags, errn; | |
1099 | char **argv, *args; | |
3cb3b8df | 1100 | const char *in = "", *out = "", *err = ""; |
61bb466e KW |
1101 | int fd, fds[3]; |
1102 | sigset_t set; | |
3cb3b8df | 1103 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
3fdfcbf1 | 1104 | struct inferior *inf; |
61bb466e KW |
1105 | |
1106 | argv = xmalloc (((strlen (allargs) + 1) / (unsigned) 2 + 2) * | |
1107 | sizeof (*argv)); | |
1108 | argv[0] = get_exec_file (1); | |
1109 | if (!argv[0]) | |
1110 | { | |
1111 | if (exec_file) | |
1112 | argv[0] = exec_file; | |
1113 | else | |
1114 | return; | |
1115 | } | |
1116 | ||
1117 | args = xstrdup (allargs); | |
1118 | breakup_args (args, exec_file ? &argv[1] : &argv[0]); | |
1119 | ||
1120 | argv = nto_parse_redirection (argv, &in, &out, &err); | |
1121 | ||
1122 | fds[0] = STDIN_FILENO; | |
1123 | fds[1] = STDOUT_FILENO; | |
1124 | fds[2] = STDERR_FILENO; | |
1125 | ||
1126 | /* If the user specified I/O via gdb's --tty= arg, use it, but only | |
1127 | if the i/o is not also being specified via redirection. */ | |
1128 | if (inferior_io_terminal) | |
1129 | { | |
1130 | if (!in[0]) | |
1131 | in = inferior_io_terminal; | |
1132 | if (!out[0]) | |
1133 | out = inferior_io_terminal; | |
1134 | if (!err[0]) | |
1135 | err = inferior_io_terminal; | |
1136 | } | |
1137 | ||
1138 | if (in[0]) | |
1139 | { | |
1140 | fd = open (in, O_RDONLY); | |
1141 | if (fd == -1) | |
1142 | perror (in); | |
1143 | else | |
1144 | fds[0] = fd; | |
1145 | } | |
1146 | if (out[0]) | |
1147 | { | |
1148 | fd = open (out, O_WRONLY); | |
1149 | if (fd == -1) | |
1150 | perror (out); | |
1151 | else | |
1152 | fds[1] = fd; | |
1153 | } | |
1154 | if (err[0]) | |
1155 | { | |
1156 | fd = open (err, O_WRONLY); | |
1157 | if (fd == -1) | |
1158 | perror (err); | |
1159 | else | |
1160 | fds[2] = fd; | |
1161 | } | |
1162 | ||
1163 | /* Clear any pending SIGUSR1's but keep the behavior the same. */ | |
1164 | signal (SIGUSR1, signal (SIGUSR1, SIG_IGN)); | |
1165 | ||
1166 | sigemptyset (&set); | |
1167 | sigaddset (&set, SIGUSR1); | |
1168 | sigprocmask (SIG_UNBLOCK, &set, NULL); | |
1169 | ||
1170 | memset (&inherit, 0, sizeof (inherit)); | |
1171 | ||
1172 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0) | |
1173 | { | |
d737fd7f | 1174 | inherit.nd = nto_node (); |
61bb466e KW |
1175 | inherit.flags |= SPAWN_SETND; |
1176 | inherit.flags &= ~SPAWN_EXEC; | |
1177 | } | |
1178 | inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD; | |
1179 | inherit.pgroup = SPAWN_NEWPGROUP; | |
1180 | pid = spawnp (argv[0], 3, fds, &inherit, argv, | |
1181 | ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0); | |
1182 | xfree (args); | |
1183 | ||
1184 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1185 | ||
1186 | if (pid == -1) | |
8a3fe4f8 | 1187 | error (_("Error spawning %s: %d (%s)"), argv[0], errno, |
d737fd7f | 1188 | safe_strerror (errno)); |
61bb466e KW |
1189 | |
1190 | if (fds[0] != STDIN_FILENO) | |
1191 | close (fds[0]); | |
1192 | if (fds[1] != STDOUT_FILENO) | |
1193 | close (fds[1]); | |
1194 | if (fds[2] != STDERR_FILENO) | |
1195 | close (fds[2]); | |
1196 | ||
1197 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
28439f5e | 1198 | procfs_find_new_threads (ops); |
61bb466e | 1199 | |
6c95b8df PA |
1200 | inf = current_inferior (); |
1201 | inferior_appeared (inf, pid); | |
3fdfcbf1 | 1202 | inf->attach_flag = 0; |
7f9f62ba | 1203 | |
61bb466e KW |
1204 | flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */ |
1205 | errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0); | |
1206 | if (errn != EOK) | |
1207 | { | |
1208 | /* FIXME: expected warning? */ | |
1209 | /* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n", | |
1210 | errn, strerror(errn) ); */ | |
1211 | } | |
28439f5e | 1212 | push_target (ops); |
61bb466e KW |
1213 | target_terminal_init (); |
1214 | ||
61bb466e KW |
1215 | if (exec_bfd != NULL |
1216 | || (symfile_objfile != NULL && symfile_objfile->obfd != NULL)) | |
268a4a75 | 1217 | solib_create_inferior_hook (0); |
61bb466e KW |
1218 | } |
1219 | ||
1220 | static void | |
1eab8a48 | 1221 | procfs_stop (struct target_ops *self, ptid_t ptid) |
61bb466e KW |
1222 | { |
1223 | devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0); | |
1224 | } | |
1225 | ||
1226 | static void | |
7d85a9c0 | 1227 | procfs_kill_inferior (struct target_ops *ops) |
61bb466e KW |
1228 | { |
1229 | target_mourn_inferior (); | |
1230 | } | |
1231 | ||
1232 | /* Store register REGNO, or all registers if REGNO == -1, from the contents | |
1233 | of REGISTERS. */ | |
1234 | static void | |
f32dbf8c | 1235 | procfs_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
61bb466e KW |
1236 | { |
1237 | } | |
1238 | ||
1239 | /* Fill buf with regset and return devctl cmd to do the setting. Return | |
1240 | -1 if we fail to get the regset. Store size of regset in regsize. */ | |
1241 | static int | |
1242 | get_regset (int regset, char *buf, int bufsize, int *regsize) | |
1243 | { | |
1244 | int dev_get, dev_set; | |
1245 | switch (regset) | |
1246 | { | |
1247 | case NTO_REG_GENERAL: | |
1248 | dev_get = DCMD_PROC_GETGREG; | |
1249 | dev_set = DCMD_PROC_SETGREG; | |
1250 | break; | |
1251 | ||
1252 | case NTO_REG_FLOAT: | |
1253 | dev_get = DCMD_PROC_GETFPREG; | |
1254 | dev_set = DCMD_PROC_SETFPREG; | |
1255 | break; | |
1256 | ||
1257 | case NTO_REG_ALT: | |
1258 | dev_get = DCMD_PROC_GETALTREG; | |
1259 | dev_set = DCMD_PROC_SETALTREG; | |
1260 | break; | |
1261 | ||
1262 | case NTO_REG_SYSTEM: | |
1263 | default: | |
1264 | return -1; | |
1265 | } | |
97c44116 | 1266 | if (devctl (ctl_fd, dev_get, buf, bufsize, regsize) != EOK) |
61bb466e KW |
1267 | return -1; |
1268 | ||
1269 | return dev_set; | |
1270 | } | |
1271 | ||
1272 | void | |
28439f5e PA |
1273 | procfs_store_registers (struct target_ops *ops, |
1274 | struct regcache *regcache, int regno) | |
61bb466e KW |
1275 | { |
1276 | union | |
1277 | { | |
1278 | procfs_greg greg; | |
1279 | procfs_fpreg fpreg; | |
1280 | procfs_altreg altreg; | |
1281 | } | |
1282 | reg; | |
1283 | unsigned off; | |
1284 | int len, regset, regsize, dev_set, err; | |
1285 | char *data; | |
1286 | ||
1287 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1288 | return; | |
1289 | procfs_set_thread (inferior_ptid); | |
1290 | ||
1291 | if (regno == -1) | |
1292 | { | |
1293 | for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++) | |
1294 | { | |
1295 | dev_set = get_regset (regset, (char *) ®, | |
1296 | sizeof (reg), ®size); | |
1297 | if (dev_set == -1) | |
1298 | continue; | |
1299 | ||
56be3814 | 1300 | if (nto_regset_fill (regcache, regset, (char *) ®) == -1) |
61bb466e KW |
1301 | continue; |
1302 | ||
1303 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1304 | if (err != EOK) | |
1305 | fprintf_unfiltered (gdb_stderr, | |
1306 | "Warning unable to write regset %d: %s\n", | |
dc5dd1eb | 1307 | regno, safe_strerror (err)); |
61bb466e KW |
1308 | } |
1309 | } | |
1310 | else | |
1311 | { | |
1312 | regset = nto_regset_id (regno); | |
1313 | if (regset == -1) | |
1314 | return; | |
1315 | ||
1316 | dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size); | |
1317 | if (dev_set == -1) | |
1318 | return; | |
1319 | ||
60441ab9 UW |
1320 | len = nto_register_area (get_regcache_arch (regcache), |
1321 | regno, regset, &off); | |
61bb466e KW |
1322 | |
1323 | if (len < 1) | |
1324 | return; | |
1325 | ||
56be3814 | 1326 | regcache_raw_collect (regcache, regno, (char *) ® + off); |
61bb466e KW |
1327 | |
1328 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1329 | if (err != EOK) | |
1330 | fprintf_unfiltered (gdb_stderr, | |
1331 | "Warning unable to write regset %d: %s\n", regno, | |
dc5dd1eb | 1332 | safe_strerror (err)); |
61bb466e KW |
1333 | } |
1334 | } | |
1335 | ||
2455069d UW |
1336 | /* Set list of signals to be handled in the target. */ |
1337 | ||
61bb466e | 1338 | static void |
94bedb42 TT |
1339 | procfs_pass_signals (struct target_ops *self, |
1340 | int numsigs, unsigned char *pass_signals) | |
61bb466e KW |
1341 | { |
1342 | int signo; | |
1343 | ||
2455069d UW |
1344 | sigfillset (&run.trace); |
1345 | ||
61bb466e KW |
1346 | for (signo = 1; signo < NSIG; signo++) |
1347 | { | |
2ea28649 | 1348 | int target_signo = gdb_signal_from_host (signo); |
2455069d UW |
1349 | if (target_signo < numsigs && pass_signals[target_signo]) |
1350 | sigdelset (&run.trace, signo); | |
61bb466e KW |
1351 | } |
1352 | } | |
1353 | ||
61bb466e KW |
1354 | static struct tidinfo * |
1355 | procfs_thread_info (pid_t pid, short tid) | |
1356 | { | |
1357 | /* NYI */ | |
1358 | return NULL; | |
1359 | } | |
1360 | ||
94c74239 | 1361 | static char * |
117de6a9 | 1362 | procfs_pid_to_str (struct target_ops *ops, ptid_t ptid) |
61bb466e KW |
1363 | { |
1364 | static char buf[1024]; | |
1365 | int pid, tid, n; | |
1366 | struct tidinfo *tip; | |
1367 | ||
1368 | pid = ptid_get_pid (ptid); | |
1369 | tid = ptid_get_tid (ptid); | |
1370 | ||
dc5dd1eb | 1371 | n = snprintf (buf, 1023, "process %d", pid); |
61bb466e KW |
1372 | |
1373 | #if 0 /* NYI */ | |
1374 | tip = procfs_thread_info (pid, tid); | |
1375 | if (tip != NULL) | |
dc5dd1eb | 1376 | snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state); |
61bb466e KW |
1377 | #endif |
1378 | ||
1379 | return buf; | |
1380 | } | |
1381 | ||
1382 | static void | |
dc5dd1eb | 1383 | init_procfs_ops (void) |
61bb466e KW |
1384 | { |
1385 | procfs_ops.to_shortname = "procfs"; | |
1386 | procfs_ops.to_longname = "QNX Neutrino procfs child process"; | |
1387 | procfs_ops.to_doc = | |
1388 | "QNX Neutrino procfs child process (started by the \"run\" command).\n\ | |
1389 | target procfs <node>"; | |
1390 | procfs_ops.to_open = procfs_open; | |
1391 | procfs_ops.to_attach = procfs_attach; | |
1392 | procfs_ops.to_post_attach = procfs_post_attach; | |
1393 | procfs_ops.to_detach = procfs_detach; | |
1394 | procfs_ops.to_resume = procfs_resume; | |
1395 | procfs_ops.to_wait = procfs_wait; | |
1396 | procfs_ops.to_fetch_registers = procfs_fetch_registers; | |
1397 | procfs_ops.to_store_registers = procfs_store_registers; | |
1398 | procfs_ops.to_prepare_to_store = procfs_prepare_to_store; | |
c8e73a31 | 1399 | procfs_ops.deprecated_xfer_memory = procfs_xfer_memory; |
61bb466e KW |
1400 | procfs_ops.to_files_info = procfs_files_info; |
1401 | procfs_ops.to_insert_breakpoint = procfs_insert_breakpoint; | |
1402 | procfs_ops.to_remove_breakpoint = procfs_remove_breakpoint; | |
1403 | procfs_ops.to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint; | |
1404 | procfs_ops.to_insert_hw_breakpoint = procfs_insert_hw_breakpoint; | |
1405 | procfs_ops.to_remove_hw_breakpoint = procfs_remove_breakpoint; | |
1406 | procfs_ops.to_insert_watchpoint = procfs_insert_hw_watchpoint; | |
1407 | procfs_ops.to_remove_watchpoint = procfs_remove_hw_watchpoint; | |
1408 | procfs_ops.to_stopped_by_watchpoint = procfs_stopped_by_watchpoint; | |
1409 | procfs_ops.to_terminal_init = terminal_init_inferior; | |
1410 | procfs_ops.to_terminal_inferior = terminal_inferior; | |
1411 | procfs_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
1412 | procfs_ops.to_terminal_ours = terminal_ours; | |
1413 | procfs_ops.to_terminal_info = child_terminal_info; | |
1414 | procfs_ops.to_kill = procfs_kill_inferior; | |
1415 | procfs_ops.to_create_inferior = procfs_create_inferior; | |
1416 | procfs_ops.to_mourn_inferior = procfs_mourn_inferior; | |
1417 | procfs_ops.to_can_run = procfs_can_run; | |
2455069d | 1418 | procfs_ops.to_pass_signals = procfs_pass_signals; |
61bb466e KW |
1419 | procfs_ops.to_thread_alive = procfs_thread_alive; |
1420 | procfs_ops.to_find_new_threads = procfs_find_new_threads; | |
1421 | procfs_ops.to_pid_to_str = procfs_pid_to_str; | |
1422 | procfs_ops.to_stop = procfs_stop; | |
1423 | procfs_ops.to_stratum = process_stratum; | |
c35b1492 PA |
1424 | procfs_ops.to_has_all_memory = default_child_has_all_memory; |
1425 | procfs_ops.to_has_memory = default_child_has_memory; | |
1426 | procfs_ops.to_has_stack = default_child_has_stack; | |
1427 | procfs_ops.to_has_registers = default_child_has_registers; | |
1428 | procfs_ops.to_has_execution = default_child_has_execution; | |
61bb466e KW |
1429 | procfs_ops.to_magic = OPS_MAGIC; |
1430 | procfs_ops.to_have_continuable_watchpoint = 1; | |
745a434e | 1431 | procfs_ops.to_extra_thread_info = nto_extra_thread_info; |
61bb466e KW |
1432 | } |
1433 | ||
1434 | #define OSTYPE_NTO 1 | |
1435 | ||
1436 | void | |
dc5dd1eb | 1437 | _initialize_procfs (void) |
61bb466e KW |
1438 | { |
1439 | sigset_t set; | |
1440 | ||
1441 | init_procfs_ops (); | |
1442 | add_target (&procfs_ops); | |
1443 | ||
1444 | /* We use SIGUSR1 to gain control after we block waiting for a process. | |
1445 | We use sigwaitevent to wait. */ | |
1446 | sigemptyset (&set); | |
1447 | sigaddset (&set, SIGUSR1); | |
1448 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1449 | ||
2455069d UW |
1450 | /* Initially, make sure all signals are reported. */ |
1451 | sigfillset (&run.trace); | |
61bb466e KW |
1452 | |
1453 | /* Stuff some information. */ | |
1454 | nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags; | |
1455 | nto_cpuinfo_valid = 1; | |
1456 | ||
1bedd215 AC |
1457 | add_info ("pidlist", procfs_pidlist, _("pidlist")); |
1458 | add_info ("meminfo", procfs_meminfo, _("memory information")); | |
d737fd7f KW |
1459 | |
1460 | nto_is_nto_target = procfs_is_nto_target; | |
61bb466e KW |
1461 | } |
1462 | ||
1463 | ||
1464 | static int | |
1465 | procfs_hw_watchpoint (int addr, int len, int type) | |
1466 | { | |
1467 | procfs_break brk; | |
1468 | ||
1469 | switch (type) | |
1470 | { | |
1471 | case 1: /* Read. */ | |
1472 | brk.type = _DEBUG_BREAK_RD; | |
1473 | break; | |
1474 | case 2: /* Read/Write. */ | |
1475 | brk.type = _DEBUG_BREAK_RW; | |
1476 | break; | |
1477 | default: /* Modify. */ | |
1478 | /* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */ | |
1479 | brk.type = _DEBUG_BREAK_RW; | |
1480 | } | |
1481 | brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */ | |
1482 | brk.addr = addr; | |
1483 | brk.size = len; | |
1484 | ||
1485 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1486 | if (errno != EOK) | |
1487 | { | |
9b20d036 | 1488 | perror (_("Failed to set hardware watchpoint")); |
61bb466e KW |
1489 | return -1; |
1490 | } | |
1491 | return 0; | |
1492 | } | |
1493 | ||
1494 | static int | |
5461485a TT |
1495 | procfs_can_use_hw_breakpoint (struct target_ops *self, |
1496 | int type, int cnt, int othertype) | |
61bb466e KW |
1497 | { |
1498 | return 1; | |
1499 | } | |
1500 | ||
1501 | static int | |
11b5219a TT |
1502 | procfs_remove_hw_watchpoint (struct target_ops *self, |
1503 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 1504 | struct expression *cond) |
61bb466e KW |
1505 | { |
1506 | return procfs_hw_watchpoint (addr, -1, type); | |
1507 | } | |
1508 | ||
1509 | static int | |
7bb99c53 TT |
1510 | procfs_insert_hw_watchpoint (struct target_ops *self, |
1511 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 1512 | struct expression *cond) |
61bb466e KW |
1513 | { |
1514 | return procfs_hw_watchpoint (addr, len, type); | |
1515 | } | |
1516 | ||
1517 | static int | |
6a109b6b | 1518 | procfs_stopped_by_watchpoint (struct target_ops *ops) |
61bb466e KW |
1519 | { |
1520 | return 0; | |
1521 | } |