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 | |
61baf725 | 4 | Copyright (C) 2003-2017 Free Software Foundation, Inc. |
61bb466e KW |
5 | |
6 | Contributed by QNX Software Systems Ltd. | |
7 | ||
8 | This file is part of GDB. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
61bb466e KW |
13 | (at your option) any later version. |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
61bb466e KW |
22 | |
23 | #include "defs.h" | |
24 | ||
25 | #include <fcntl.h> | |
26 | #include <spawn.h> | |
27 | #include <sys/debug.h> | |
28 | #include <sys/procfs.h> | |
29 | #include <sys/neutrino.h> | |
30 | #include <sys/syspage.h> | |
2978b111 | 31 | #include <dirent.h> |
61bb466e | 32 | #include <sys/netmgr.h> |
8a6c0ccd AR |
33 | #include <sys/auxv.h> |
34 | ||
61bb466e KW |
35 | #include "gdbcore.h" |
36 | #include "inferior.h" | |
37 | #include "target.h" | |
38 | #include "objfiles.h" | |
39 | #include "gdbthread.h" | |
40 | #include "nto-tdep.h" | |
41 | #include "command.h" | |
42 | #include "regcache.h" | |
5ea03926 | 43 | #include "solib.h" |
ee8e9165 | 44 | #include "inf-child.h" |
774ee6d2 | 45 | #include "common/filestuff.h" |
61bb466e KW |
46 | |
47 | #define NULL_PID 0 | |
48 | #define _DEBUG_FLAG_TRACE (_DEBUG_FLAG_TRACE_EXEC|_DEBUG_FLAG_TRACE_RD|\ | |
49 | _DEBUG_FLAG_TRACE_WR|_DEBUG_FLAG_TRACE_MODIFY) | |
50 | ||
61bb466e KW |
51 | int ctl_fd; |
52 | ||
a40805d4 | 53 | static sighandler_t ofunc; |
61bb466e KW |
54 | |
55 | static procfs_run run; | |
56 | ||
61bb466e KW |
57 | static ptid_t do_attach (ptid_t ptid); |
58 | ||
5461485a | 59 | static int procfs_can_use_hw_breakpoint (struct target_ops *self, |
774ee6d2 | 60 | enum bptype, int, int); |
61bb466e | 61 | |
7bb99c53 | 62 | static int procfs_insert_hw_watchpoint (struct target_ops *self, |
f486487f SM |
63 | CORE_ADDR addr, int len, |
64 | enum target_hw_bp_type type, | |
a8f42b45 | 65 | struct expression *cond); |
61bb466e | 66 | |
11b5219a | 67 | static int procfs_remove_hw_watchpoint (struct target_ops *self, |
f486487f SM |
68 | CORE_ADDR addr, int len, |
69 | enum target_hw_bp_type type, | |
a8f42b45 | 70 | struct expression *cond); |
61bb466e | 71 | |
6a109b6b | 72 | static int procfs_stopped_by_watchpoint (struct target_ops *ops); |
61bb466e | 73 | |
6a3cb8e8 | 74 | /* These two globals are only ever set in procfs_open_1, but are |
61bb466e KW |
75 | referenced elsewhere. 'nto_procfs_node' is a flag used to say |
76 | whether we are local, or we should get the current node descriptor | |
77 | for the remote QNX node. */ | |
609c3040 | 78 | static char *nodestr; |
61bb466e KW |
79 | static unsigned nto_procfs_node = ND_LOCAL_NODE; |
80 | ||
81 | /* Return the current QNX Node, or error out. This is a simple | |
82 | wrapper for the netmgr_strtond() function. The reason this | |
83 | is required is because QNX node descriptors are transient so | |
84 | we have to re-acquire them every time. */ | |
85 | static unsigned | |
d737fd7f | 86 | nto_node (void) |
61bb466e KW |
87 | { |
88 | unsigned node; | |
89 | ||
609c3040 AR |
90 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 |
91 | || nodestr == NULL) | |
61bb466e KW |
92 | return ND_LOCAL_NODE; |
93 | ||
609c3040 | 94 | node = netmgr_strtond (nodestr, 0); |
61bb466e | 95 | if (node == -1) |
8a3fe4f8 | 96 | error (_("Lost the QNX node. Debug session probably over.")); |
61bb466e KW |
97 | |
98 | return (node); | |
99 | } | |
100 | ||
d737fd7f KW |
101 | static enum gdb_osabi |
102 | procfs_is_nto_target (bfd *abfd) | |
103 | { | |
104 | return GDB_OSABI_QNXNTO; | |
105 | } | |
106 | ||
6a3cb8e8 PA |
107 | /* This is called when we call 'target native' or 'target procfs |
108 | <arg>' from the (gdb) prompt. For QNX6 (nto), the only valid arg | |
109 | will be a QNX node string, eg: "/net/some_node". If arg is not a | |
110 | valid QNX node, we will default to local. */ | |
61bb466e | 111 | static void |
014f9477 | 112 | procfs_open_1 (struct target_ops *ops, const char *arg, int from_tty) |
61bb466e | 113 | { |
61bb466e KW |
114 | char *endstr; |
115 | char buffer[50]; | |
116 | int fd, total_size; | |
117 | procfs_sysinfo *sysinfo; | |
9fe4a216 | 118 | struct cleanup *cleanups; |
609c3040 | 119 | char nto_procfs_path[PATH_MAX]; |
61bb466e | 120 | |
6a3cb8e8 PA |
121 | /* Offer to kill previous inferiors before opening this target. */ |
122 | target_preopen (from_tty); | |
123 | ||
d737fd7f KW |
124 | nto_is_nto_target = procfs_is_nto_target; |
125 | ||
61bb466e KW |
126 | /* Set the default node used for spawning to this one, |
127 | and only override it if there is a valid arg. */ | |
128 | ||
609c3040 AR |
129 | xfree (nodestr); |
130 | nodestr = NULL; | |
131 | ||
61bb466e | 132 | nto_procfs_node = ND_LOCAL_NODE; |
609c3040 | 133 | nodestr = (arg != NULL) ? xstrdup (arg) : NULL; |
61bb466e KW |
134 | |
135 | init_thread_list (); | |
136 | ||
137 | if (nodestr) | |
138 | { | |
139 | nto_procfs_node = netmgr_strtond (nodestr, &endstr); | |
140 | if (nto_procfs_node == -1) | |
141 | { | |
142 | if (errno == ENOTSUP) | |
143 | printf_filtered ("QNX Net Manager not found.\n"); | |
144 | printf_filtered ("Invalid QNX node %s: error %d (%s).\n", nodestr, | |
dc5dd1eb | 145 | errno, safe_strerror (errno)); |
61bb466e KW |
146 | xfree (nodestr); |
147 | nodestr = NULL; | |
148 | nto_procfs_node = ND_LOCAL_NODE; | |
149 | } | |
150 | else if (*endstr) | |
151 | { | |
152 | if (*(endstr - 1) == '/') | |
153 | *(endstr - 1) = 0; | |
154 | else | |
155 | *endstr = 0; | |
156 | } | |
157 | } | |
609c3040 AR |
158 | snprintf (nto_procfs_path, PATH_MAX - 1, "%s%s", |
159 | (nodestr != NULL) ? nodestr : "", "/proc"); | |
61bb466e KW |
160 | |
161 | fd = open (nto_procfs_path, O_RDONLY); | |
162 | if (fd == -1) | |
163 | { | |
164 | printf_filtered ("Error opening %s : %d (%s)\n", nto_procfs_path, errno, | |
dc5dd1eb | 165 | safe_strerror (errno)); |
8a3fe4f8 | 166 | error (_("Invalid procfs arg")); |
61bb466e | 167 | } |
9fe4a216 | 168 | cleanups = make_cleanup_close (fd); |
61bb466e KW |
169 | |
170 | sysinfo = (void *) buffer; | |
171 | if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, sizeof buffer, 0) != EOK) | |
172 | { | |
173 | printf_filtered ("Error getting size: %d (%s)\n", errno, | |
dc5dd1eb | 174 | safe_strerror (errno)); |
8a3fe4f8 | 175 | error (_("Devctl failed.")); |
61bb466e KW |
176 | } |
177 | else | |
178 | { | |
179 | total_size = sysinfo->total_size; | |
180 | sysinfo = alloca (total_size); | |
609c3040 | 181 | if (sysinfo == NULL) |
61bb466e KW |
182 | { |
183 | printf_filtered ("Memory error: %d (%s)\n", errno, | |
dc5dd1eb | 184 | safe_strerror (errno)); |
8a3fe4f8 | 185 | error (_("alloca failed.")); |
61bb466e KW |
186 | } |
187 | else | |
188 | { | |
189 | if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, total_size, 0) != EOK) | |
190 | { | |
191 | printf_filtered ("Error getting sysinfo: %d (%s)\n", errno, | |
dc5dd1eb | 192 | safe_strerror (errno)); |
8a3fe4f8 | 193 | error (_("Devctl failed.")); |
61bb466e KW |
194 | } |
195 | else | |
196 | { | |
197 | if (sysinfo->type != | |
1143fffb | 198 | nto_map_arch_to_cputype (gdbarch_bfd_arch_info |
f5656ead | 199 | (target_gdbarch ())->arch_name)) |
9fe4a216 | 200 | error (_("Invalid target CPU.")); |
61bb466e KW |
201 | } |
202 | } | |
203 | } | |
9fe4a216 | 204 | do_cleanups (cleanups); |
6a3cb8e8 PA |
205 | |
206 | inf_child_open_target (ops, arg, from_tty); | |
61bb466e KW |
207 | printf_filtered ("Debugging using %s\n", nto_procfs_path); |
208 | } | |
209 | ||
210 | static void | |
211 | procfs_set_thread (ptid_t ptid) | |
212 | { | |
213 | pid_t tid; | |
214 | ||
215 | tid = ptid_get_tid (ptid); | |
216 | devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0); | |
217 | } | |
218 | ||
219 | /* Return nonzero if the thread TH is still alive. */ | |
220 | static int | |
28439f5e | 221 | procfs_thread_alive (struct target_ops *ops, ptid_t ptid) |
61bb466e KW |
222 | { |
223 | pid_t tid; | |
745a434e AR |
224 | pid_t pid; |
225 | procfs_status status; | |
226 | int err; | |
61bb466e KW |
227 | |
228 | tid = ptid_get_tid (ptid); | |
745a434e AR |
229 | pid = ptid_get_pid (ptid); |
230 | ||
231 | if (kill (pid, 0) == -1) | |
232 | return 0; | |
233 | ||
234 | status.tid = tid; | |
235 | if ((err = devctl (ctl_fd, DCMD_PROC_TIDSTATUS, | |
236 | &status, sizeof (status), 0)) != EOK) | |
237 | return 0; | |
238 | ||
239 | /* Thread is alive or dead but not yet joined, | |
240 | or dead and there is an alive (or dead unjoined) thread with | |
241 | higher tid. | |
242 | ||
243 | If the tid is not the same as requested, requested tid is dead. */ | |
244 | return (status.tid == tid) && (status.state != STATE_DEAD); | |
245 | } | |
246 | ||
247 | static void | |
248 | update_thread_private_data_name (struct thread_info *new_thread, | |
249 | const char *newname) | |
250 | { | |
251 | int newnamelen; | |
252 | struct private_thread_info *pti; | |
253 | ||
254 | gdb_assert (newname != NULL); | |
255 | gdb_assert (new_thread != NULL); | |
256 | newnamelen = strlen (newname); | |
fe978cb0 | 257 | if (!new_thread->priv) |
745a434e | 258 | { |
fe978cb0 | 259 | new_thread->priv = xmalloc (offsetof (struct private_thread_info, |
745a434e AR |
260 | name) |
261 | + newnamelen + 1); | |
fe978cb0 | 262 | memcpy (new_thread->priv->name, newname, newnamelen + 1); |
745a434e | 263 | } |
fe978cb0 | 264 | else if (strcmp (newname, new_thread->priv->name) != 0) |
745a434e AR |
265 | { |
266 | /* Reallocate if neccessary. */ | |
fe978cb0 | 267 | int oldnamelen = strlen (new_thread->priv->name); |
745a434e AR |
268 | |
269 | if (oldnamelen < newnamelen) | |
fe978cb0 | 270 | new_thread->priv = xrealloc (new_thread->priv, |
745a434e AR |
271 | offsetof (struct private_thread_info, |
272 | name) | |
273 | + newnamelen + 1); | |
fe978cb0 | 274 | memcpy (new_thread->priv->name, newname, newnamelen + 1); |
745a434e AR |
275 | } |
276 | } | |
277 | ||
278 | static void | |
279 | update_thread_private_data (struct thread_info *new_thread, | |
280 | pthread_t tid, int state, int flags) | |
281 | { | |
282 | struct private_thread_info *pti; | |
283 | procfs_info pidinfo; | |
284 | struct _thread_name *tn; | |
285 | procfs_threadctl tctl; | |
286 | ||
287 | #if _NTO_VERSION > 630 | |
288 | gdb_assert (new_thread != NULL); | |
289 | ||
290 | if (devctl (ctl_fd, DCMD_PROC_INFO, &pidinfo, | |
291 | sizeof(pidinfo), 0) != EOK) | |
292 | return; | |
293 | ||
294 | memset (&tctl, 0, sizeof (tctl)); | |
295 | tctl.cmd = _NTO_TCTL_NAME; | |
296 | tn = (struct _thread_name *) (&tctl.data); | |
297 | ||
298 | /* Fetch name for the given thread. */ | |
299 | tctl.tid = tid; | |
300 | tn->name_buf_len = sizeof (tctl.data) - sizeof (*tn); | |
301 | tn->new_name_len = -1; /* Getting, not setting. */ | |
302 | if (devctl (ctl_fd, DCMD_PROC_THREADCTL, &tctl, sizeof (tctl), NULL) != EOK) | |
303 | tn->name_buf[0] = '\0'; | |
304 | ||
305 | tn->name_buf[_NTO_THREAD_NAME_MAX] = '\0'; | |
306 | ||
307 | update_thread_private_data_name (new_thread, tn->name_buf); | |
308 | ||
fe978cb0 | 309 | pti = (struct private_thread_info *) new_thread->priv; |
745a434e AR |
310 | pti->tid = tid; |
311 | pti->state = state; | |
312 | pti->flags = flags; | |
313 | #endif /* _NTO_VERSION */ | |
61bb466e KW |
314 | } |
315 | ||
94c74239 | 316 | static void |
e8032dde | 317 | procfs_update_thread_list (struct target_ops *ops) |
61bb466e KW |
318 | { |
319 | procfs_status status; | |
320 | pid_t pid; | |
321 | ptid_t ptid; | |
745a434e AR |
322 | pthread_t tid; |
323 | struct thread_info *new_thread; | |
61bb466e KW |
324 | |
325 | if (ctl_fd == -1) | |
326 | return; | |
327 | ||
e8032dde PA |
328 | prune_threads (); |
329 | ||
61bb466e KW |
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 | ||
774ee6d2 | 361 | static void |
61bb466e KW |
362 | procfs_pidlist (char *args, int from_tty) |
363 | { | |
364 | DIR *dp = NULL; | |
365 | struct dirent *dirp = NULL; | |
609c3040 | 366 | char buf[PATH_MAX]; |
61bb466e KW |
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; |
609c3040 | 374 | char procfs_dir[PATH_MAX]; |
61bb466e | 375 | |
609c3040 AR |
376 | snprintf (procfs_dir, sizeof (procfs_dir), "%s%s", |
377 | (nodestr != NULL) ? nodestr : "", "/proc"); | |
378 | ||
379 | dp = opendir (procfs_dir); | |
61bb466e KW |
380 | if (dp == NULL) |
381 | { | |
dc5dd1eb | 382 | fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)", |
609c3040 | 383 | procfs_dir, errno, safe_strerror (errno)); |
61bb466e KW |
384 | return; |
385 | } | |
386 | ||
9fe4a216 TT |
387 | cleanups = make_cleanup (do_closedir_cleanup, dp); |
388 | ||
61bb466e KW |
389 | /* Start scan at first pid. */ |
390 | rewinddir (dp); | |
391 | ||
392 | do | |
393 | { | |
9fe4a216 TT |
394 | int fd; |
395 | struct cleanup *inner_cleanup; | |
396 | ||
61bb466e KW |
397 | /* Get the right pid and procfs path for the pid. */ |
398 | do | |
399 | { | |
400 | dirp = readdir (dp); | |
401 | if (dirp == NULL) | |
402 | { | |
9fe4a216 | 403 | do_cleanups (cleanups); |
61bb466e KW |
404 | return; |
405 | } | |
609c3040 AR |
406 | snprintf (buf, sizeof (buf), "%s%s/%s/as", |
407 | (nodestr != NULL) ? nodestr : "", | |
408 | "/proc", dirp->d_name); | |
61bb466e KW |
409 | pid = atoi (dirp->d_name); |
410 | } | |
411 | while (pid == 0); | |
412 | ||
0df8b418 | 413 | /* Open the procfs path. */ |
61bb466e KW |
414 | fd = open (buf, O_RDONLY); |
415 | if (fd == -1) | |
416 | { | |
dc5dd1eb | 417 | fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n", |
d737fd7f | 418 | buf, errno, safe_strerror (errno)); |
609c3040 | 419 | continue; |
61bb466e | 420 | } |
9fe4a216 | 421 | inner_cleanup = make_cleanup_close (fd); |
61bb466e KW |
422 | |
423 | pidinfo = (procfs_info *) buf; | |
424 | if (devctl (fd, DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK) | |
425 | { | |
dc5dd1eb | 426 | fprintf_unfiltered (gdb_stderr, |
d737fd7f KW |
427 | "devctl DCMD_PROC_INFO failed - %d (%s)\n", |
428 | errno, safe_strerror (errno)); | |
61bb466e KW |
429 | break; |
430 | } | |
431 | num_threads = pidinfo->num_threads; | |
432 | ||
433 | info = (procfs_debuginfo *) buf; | |
434 | if (devctl (fd, DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0) != EOK) | |
435 | strcpy (name, "unavailable"); | |
436 | else | |
437 | strcpy (name, info->path); | |
438 | ||
439 | /* Collect state info on all the threads. */ | |
440 | status = (procfs_status *) buf; | |
441 | for (status->tid = 1; status->tid <= num_threads; status->tid++) | |
442 | { | |
609c3040 AR |
443 | const int err |
444 | = devctl (fd, DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0); | |
445 | printf_filtered ("%s - %d", name, pid); | |
446 | if (err == EOK && status->tid != 0) | |
447 | printf_filtered ("/%d\n", status->tid); | |
448 | else | |
449 | { | |
450 | printf_filtered ("\n"); | |
451 | break; | |
452 | } | |
61bb466e | 453 | } |
9fe4a216 TT |
454 | |
455 | do_cleanups (inner_cleanup); | |
61bb466e KW |
456 | } |
457 | while (dirp != NULL); | |
458 | ||
9fe4a216 | 459 | do_cleanups (cleanups); |
61bb466e KW |
460 | return; |
461 | } | |
462 | ||
774ee6d2 | 463 | static void |
61bb466e KW |
464 | procfs_meminfo (char *args, int from_tty) |
465 | { | |
466 | procfs_mapinfo *mapinfos = NULL; | |
467 | static int num_mapinfos = 0; | |
468 | procfs_mapinfo *mapinfo_p, *mapinfo_p2; | |
469 | int flags = ~0, err, num, i, j; | |
470 | ||
471 | struct | |
472 | { | |
473 | procfs_debuginfo info; | |
474 | char buff[_POSIX_PATH_MAX]; | |
475 | } map; | |
476 | ||
477 | struct info | |
478 | { | |
479 | unsigned addr; | |
480 | unsigned size; | |
481 | unsigned flags; | |
482 | unsigned debug_vaddr; | |
483 | unsigned long long offset; | |
484 | }; | |
485 | ||
486 | struct printinfo | |
487 | { | |
488 | unsigned long long ino; | |
489 | unsigned dev; | |
490 | struct info text; | |
491 | struct info data; | |
492 | char name[256]; | |
493 | } printme; | |
494 | ||
495 | /* Get the number of map entrys. */ | |
496 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num); | |
497 | if (err != EOK) | |
498 | { | |
d737fd7f KW |
499 | printf ("failed devctl num mapinfos - %d (%s)\n", err, |
500 | safe_strerror (err)); | |
61bb466e KW |
501 | return; |
502 | } | |
503 | ||
774ee6d2 | 504 | mapinfos = XNEWVEC (procfs_mapinfo, num); |
61bb466e KW |
505 | |
506 | num_mapinfos = num; | |
507 | mapinfo_p = mapinfos; | |
508 | ||
509 | /* Fill the map entrys. */ | |
510 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, mapinfo_p, num | |
511 | * sizeof (procfs_mapinfo), &num); | |
512 | if (err != EOK) | |
513 | { | |
5483d879 | 514 | printf ("failed devctl mapinfos - %d (%s)\n", err, safe_strerror (err)); |
61bb466e KW |
515 | xfree (mapinfos); |
516 | return; | |
517 | } | |
518 | ||
325fac50 | 519 | num = std::min (num, num_mapinfos); |
61bb466e KW |
520 | |
521 | /* Run through the list of mapinfos, and store the data and text info | |
522 | so we can print it at the bottom of the loop. */ | |
523 | for (mapinfo_p = mapinfos, i = 0; i < num; i++, mapinfo_p++) | |
524 | { | |
525 | if (!(mapinfo_p->flags & flags)) | |
526 | mapinfo_p->ino = 0; | |
527 | ||
528 | if (mapinfo_p->ino == 0) /* Already visited. */ | |
529 | continue; | |
530 | ||
531 | map.info.vaddr = mapinfo_p->vaddr; | |
532 | ||
533 | err = devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
534 | if (err != EOK) | |
535 | continue; | |
536 | ||
537 | memset (&printme, 0, sizeof printme); | |
538 | printme.dev = mapinfo_p->dev; | |
539 | printme.ino = mapinfo_p->ino; | |
540 | printme.text.addr = mapinfo_p->vaddr; | |
541 | printme.text.size = mapinfo_p->size; | |
542 | printme.text.flags = mapinfo_p->flags; | |
543 | printme.text.offset = mapinfo_p->offset; | |
544 | printme.text.debug_vaddr = map.info.vaddr; | |
545 | strcpy (printme.name, map.info.path); | |
546 | ||
547 | /* Check for matching data. */ | |
548 | for (mapinfo_p2 = mapinfos, j = 0; j < num; j++, mapinfo_p2++) | |
549 | { | |
550 | if (mapinfo_p2->vaddr != mapinfo_p->vaddr | |
551 | && mapinfo_p2->ino == mapinfo_p->ino | |
552 | && mapinfo_p2->dev == mapinfo_p->dev) | |
553 | { | |
554 | map.info.vaddr = mapinfo_p2->vaddr; | |
555 | err = | |
556 | devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
557 | if (err != EOK) | |
558 | continue; | |
559 | ||
560 | if (strcmp (map.info.path, printme.name)) | |
561 | continue; | |
562 | ||
563 | /* Lower debug_vaddr is always text, if nessessary, swap. */ | |
564 | if ((int) map.info.vaddr < (int) printme.text.debug_vaddr) | |
565 | { | |
566 | memcpy (&(printme.data), &(printme.text), | |
567 | sizeof (printme.data)); | |
568 | printme.text.addr = mapinfo_p2->vaddr; | |
569 | printme.text.size = mapinfo_p2->size; | |
570 | printme.text.flags = mapinfo_p2->flags; | |
571 | printme.text.offset = mapinfo_p2->offset; | |
572 | printme.text.debug_vaddr = map.info.vaddr; | |
573 | } | |
574 | else | |
575 | { | |
576 | printme.data.addr = mapinfo_p2->vaddr; | |
577 | printme.data.size = mapinfo_p2->size; | |
578 | printme.data.flags = mapinfo_p2->flags; | |
579 | printme.data.offset = mapinfo_p2->offset; | |
580 | printme.data.debug_vaddr = map.info.vaddr; | |
581 | } | |
582 | mapinfo_p2->ino = 0; | |
583 | } | |
584 | } | |
585 | mapinfo_p->ino = 0; | |
586 | ||
587 | printf_filtered ("%s\n", printme.name); | |
588 | printf_filtered ("\ttext=%08x bytes @ 0x%08x\n", printme.text.size, | |
589 | printme.text.addr); | |
590 | printf_filtered ("\t\tflags=%08x\n", printme.text.flags); | |
591 | printf_filtered ("\t\tdebug=%08x\n", printme.text.debug_vaddr); | |
2244ba2e | 592 | printf_filtered ("\t\toffset=%s\n", phex (printme.text.offset, 8)); |
61bb466e KW |
593 | if (printme.data.size) |
594 | { | |
595 | printf_filtered ("\tdata=%08x bytes @ 0x%08x\n", printme.data.size, | |
596 | printme.data.addr); | |
597 | printf_filtered ("\t\tflags=%08x\n", printme.data.flags); | |
598 | printf_filtered ("\t\tdebug=%08x\n", printme.data.debug_vaddr); | |
2244ba2e | 599 | printf_filtered ("\t\toffset=%s\n", phex (printme.data.offset, 8)); |
61bb466e KW |
600 | } |
601 | printf_filtered ("\tdev=0x%x\n", printme.dev); | |
602 | printf_filtered ("\tino=0x%x\n", (unsigned int) printme.ino); | |
603 | } | |
604 | xfree (mapinfos); | |
605 | return; | |
606 | } | |
607 | ||
608 | /* Print status information about what we're accessing. */ | |
609 | static void | |
610 | procfs_files_info (struct target_ops *ignore) | |
611 | { | |
181e7f93 PA |
612 | struct inferior *inf = current_inferior (); |
613 | ||
61bb466e | 614 | printf_unfiltered ("\tUsing the running image of %s %s via %s.\n", |
3fdfcbf1 | 615 | inf->attach_flag ? "attached" : "child", |
609c3040 AR |
616 | target_pid_to_str (inferior_ptid), |
617 | (nodestr != NULL) ? nodestr : "local node"); | |
61bb466e KW |
618 | } |
619 | ||
e5343fde AR |
620 | /* Target to_pid_to_exec_file implementation. */ |
621 | ||
622 | static char * | |
623 | procfs_pid_to_exec_file (struct target_ops *ops, const int pid) | |
624 | { | |
625 | int proc_fd; | |
626 | static char proc_path[PATH_MAX]; | |
627 | ssize_t rd; | |
628 | ||
629 | /* Read exe file name. */ | |
630 | snprintf (proc_path, sizeof (proc_path), "%s/proc/%d/exefile", | |
631 | (nodestr != NULL) ? nodestr : "", pid); | |
632 | proc_fd = open (proc_path, O_RDONLY); | |
633 | if (proc_fd == -1) | |
634 | return NULL; | |
635 | ||
636 | rd = read (proc_fd, proc_path, sizeof (proc_path) - 1); | |
637 | close (proc_fd); | |
638 | if (rd <= 0) | |
639 | { | |
640 | proc_path[0] = '\0'; | |
641 | return NULL; | |
642 | } | |
643 | proc_path[rd] = '\0'; | |
644 | return proc_path; | |
645 | } | |
646 | ||
61bb466e KW |
647 | /* Attach to process PID, then initialize for debugging it. */ |
648 | static void | |
c0939df1 | 649 | procfs_attach (struct target_ops *ops, const char *args, int from_tty) |
61bb466e KW |
650 | { |
651 | char *exec_file; | |
652 | int pid; | |
181e7f93 | 653 | struct inferior *inf; |
61bb466e | 654 | |
74164c56 | 655 | pid = parse_pid_to_attach (args); |
61bb466e KW |
656 | |
657 | if (pid == getpid ()) | |
8a3fe4f8 | 658 | error (_("Attaching GDB to itself is not a good idea...")); |
61bb466e KW |
659 | |
660 | if (from_tty) | |
661 | { | |
662 | exec_file = (char *) get_exec_file (0); | |
663 | ||
664 | if (exec_file) | |
665 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
666 | target_pid_to_str (pid_to_ptid (pid))); | |
667 | else | |
668 | printf_unfiltered ("Attaching to %s\n", | |
669 | target_pid_to_str (pid_to_ptid (pid))); | |
670 | ||
671 | gdb_flush (gdb_stdout); | |
672 | } | |
673 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
6c95b8df PA |
674 | inf = current_inferior (); |
675 | inferior_appeared (inf, pid); | |
181e7f93 | 676 | inf->attach_flag = 1; |
7f9f62ba | 677 | |
6a3cb8e8 PA |
678 | if (!target_is_pushed (ops)) |
679 | push_target (ops); | |
7f9f62ba | 680 | |
e8032dde | 681 | procfs_update_thread_list (ops); |
61bb466e KW |
682 | } |
683 | ||
684 | static void | |
f045800c | 685 | procfs_post_attach (struct target_ops *self, pid_t pid) |
61bb466e | 686 | { |
61bb466e | 687 | if (exec_bfd) |
268a4a75 | 688 | solib_create_inferior_hook (0); |
61bb466e KW |
689 | } |
690 | ||
691 | static ptid_t | |
692 | do_attach (ptid_t ptid) | |
693 | { | |
694 | procfs_status status; | |
695 | struct sigevent event; | |
dc5dd1eb | 696 | char path[PATH_MAX]; |
61bb466e | 697 | |
609c3040 AR |
698 | snprintf (path, PATH_MAX - 1, "%s%s/%d/as", |
699 | (nodestr != NULL) ? nodestr : "", "/proc", ptid_get_pid (ptid)); | |
61bb466e KW |
700 | ctl_fd = open (path, O_RDWR); |
701 | if (ctl_fd == -1) | |
8a3fe4f8 | 702 | error (_("Couldn't open proc file %s, error %d (%s)"), path, errno, |
dc5dd1eb | 703 | safe_strerror (errno)); |
61bb466e | 704 | if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK) |
8a3fe4f8 | 705 | error (_("Couldn't stop process")); |
61bb466e KW |
706 | |
707 | /* Define a sigevent for process stopped notification. */ | |
708 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
709 | event.sigev_signo = SIGUSR1; | |
710 | event.sigev_code = 0; | |
711 | event.sigev_value.sival_ptr = NULL; | |
712 | event.sigev_priority = -1; | |
713 | devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0); | |
714 | ||
715 | if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK | |
716 | && status.flags & _DEBUG_FLAG_STOPPED) | |
dfd4cc63 | 717 | SignalKill (nto_node (), ptid_get_pid (ptid), 0, SIGCONT, 0, 0); |
61bb466e | 718 | nto_init_solib_absolute_prefix (); |
dfd4cc63 | 719 | return ptid_build (ptid_get_pid (ptid), 0, status.tid); |
61bb466e KW |
720 | } |
721 | ||
722 | /* Ask the user what to do when an interrupt is received. */ | |
723 | static void | |
dc5dd1eb | 724 | interrupt_query (void) |
61bb466e | 725 | { |
9e2f0ad4 HZ |
726 | if (query (_("Interrupted while waiting for the program.\n\ |
727 | Give up (and stop debugging it)? "))) | |
61bb466e | 728 | { |
bc1e6c81 | 729 | target_mourn_inferior (inferior_ptid); |
039e3c22 | 730 | quit (); |
61bb466e | 731 | } |
61bb466e KW |
732 | } |
733 | ||
734 | /* The user typed ^C twice. */ | |
735 | static void | |
bfedc46a | 736 | nto_handle_sigint_twice (int signo) |
61bb466e KW |
737 | { |
738 | signal (signo, ofunc); | |
739 | interrupt_query (); | |
bfedc46a | 740 | signal (signo, nto_handle_sigint_twice); |
61bb466e KW |
741 | } |
742 | ||
743 | static void | |
bfedc46a | 744 | nto_handle_sigint (int signo) |
61bb466e KW |
745 | { |
746 | /* If this doesn't work, try more severe steps. */ | |
bfedc46a | 747 | signal (signo, nto_handle_sigint_twice); |
61bb466e | 748 | |
bfedc46a | 749 | target_interrupt (inferior_ptid); |
61bb466e KW |
750 | } |
751 | ||
752 | static ptid_t | |
117de6a9 | 753 | procfs_wait (struct target_ops *ops, |
47608cb1 | 754 | ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
61bb466e KW |
755 | { |
756 | sigset_t set; | |
757 | siginfo_t info; | |
758 | procfs_status status; | |
759 | static int exit_signo = 0; /* To track signals that cause termination. */ | |
760 | ||
761 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
762 | ||
763 | if (ptid_equal (inferior_ptid, null_ptid)) | |
764 | { | |
765 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 766 | ourstatus->value.sig = GDB_SIGNAL_0; |
61bb466e KW |
767 | exit_signo = 0; |
768 | return null_ptid; | |
769 | } | |
770 | ||
771 | sigemptyset (&set); | |
772 | sigaddset (&set, SIGUSR1); | |
773 | ||
774 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
775 | while (!(status.flags & _DEBUG_FLAG_ISTOP)) | |
776 | { | |
a40805d4 | 777 | ofunc = signal (SIGINT, nto_handle_sigint); |
61bb466e KW |
778 | sigwaitinfo (&set, &info); |
779 | signal (SIGINT, ofunc); | |
780 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
781 | } | |
782 | ||
a9889169 AR |
783 | nto_inferior_data (NULL)->stopped_flags = status.flags; |
784 | nto_inferior_data (NULL)->stopped_pc = status.ip; | |
785 | ||
61bb466e KW |
786 | if (status.flags & _DEBUG_FLAG_SSTEP) |
787 | { | |
788 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 789 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
790 | } |
791 | /* Was it a breakpoint? */ | |
792 | else if (status.flags & _DEBUG_FLAG_TRACE) | |
793 | { | |
794 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 795 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
796 | } |
797 | else if (status.flags & _DEBUG_FLAG_ISTOP) | |
798 | { | |
799 | switch (status.why) | |
800 | { | |
801 | case _DEBUG_WHY_SIGNALLED: | |
802 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
803 | ourstatus->value.sig = | |
2ea28649 | 804 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
805 | exit_signo = 0; |
806 | break; | |
807 | case _DEBUG_WHY_FAULTED: | |
808 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
809 | if (status.info.si_signo == SIGTRAP) | |
810 | { | |
811 | ourstatus->value.sig = 0; | |
812 | exit_signo = 0; | |
813 | } | |
814 | else | |
815 | { | |
816 | ourstatus->value.sig = | |
2ea28649 | 817 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
818 | exit_signo = ourstatus->value.sig; |
819 | } | |
820 | break; | |
821 | ||
822 | case _DEBUG_WHY_TERMINATED: | |
823 | { | |
824 | int waitval = 0; | |
825 | ||
dfd4cc63 | 826 | waitpid (ptid_get_pid (inferior_ptid), &waitval, WNOHANG); |
61bb466e KW |
827 | if (exit_signo) |
828 | { | |
829 | /* Abnormal death. */ | |
830 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
831 | ourstatus->value.sig = exit_signo; | |
832 | } | |
833 | else | |
834 | { | |
835 | /* Normal death. */ | |
836 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
837 | ourstatus->value.integer = WEXITSTATUS (waitval); | |
838 | } | |
839 | exit_signo = 0; | |
840 | break; | |
841 | } | |
842 | ||
843 | case _DEBUG_WHY_REQUESTED: | |
844 | /* We are assuming a requested stop is due to a SIGINT. */ | |
845 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 846 | ourstatus->value.sig = GDB_SIGNAL_INT; |
61bb466e KW |
847 | exit_signo = 0; |
848 | break; | |
849 | } | |
850 | } | |
851 | ||
a6a7f2a5 | 852 | return ptid_build (status.pid, 0, status.tid); |
61bb466e KW |
853 | } |
854 | ||
855 | /* Read the current values of the inferior's registers, both the | |
856 | general register set and floating point registers (if supported) | |
857 | and update gdb's idea of their current values. */ | |
858 | static void | |
28439f5e PA |
859 | procfs_fetch_registers (struct target_ops *ops, |
860 | struct regcache *regcache, int regno) | |
61bb466e KW |
861 | { |
862 | union | |
863 | { | |
864 | procfs_greg greg; | |
865 | procfs_fpreg fpreg; | |
866 | procfs_altreg altreg; | |
867 | } | |
868 | reg; | |
869 | int regsize; | |
870 | ||
bcc0c096 | 871 | procfs_set_thread (regcache_get_ptid (regcache)); |
61bb466e | 872 | if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK) |
56be3814 | 873 | nto_supply_gregset (regcache, (char *) ®.greg); |
61bb466e KW |
874 | if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size) |
875 | == EOK) | |
56be3814 | 876 | nto_supply_fpregset (regcache, (char *) ®.fpreg); |
61bb466e KW |
877 | if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size) |
878 | == EOK) | |
56be3814 | 879 | nto_supply_altregset (regcache, (char *) ®.altreg); |
61bb466e KW |
880 | } |
881 | ||
9d46c4e5 PA |
882 | /* Helper for procfs_xfer_partial that handles memory transfers. |
883 | Arguments are like target_xfer_partial. */ | |
61bb466e | 884 | |
9d46c4e5 PA |
885 | static enum target_xfer_status |
886 | procfs_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, | |
887 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
61bb466e | 888 | { |
9d46c4e5 PA |
889 | int nbytes; |
890 | ||
891 | if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) != (off_t) memaddr) | |
892 | return TARGET_XFER_E_IO; | |
893 | ||
894 | if (writebuf != NULL) | |
895 | nbytes = write (ctl_fd, writebuf, len); | |
896 | else | |
897 | nbytes = read (ctl_fd, readbuf, len); | |
898 | if (nbytes <= 0) | |
899 | return TARGET_XFER_E_IO; | |
900 | *xfered_len = nbytes; | |
901 | return TARGET_XFER_OK; | |
902 | } | |
903 | ||
904 | /* Target to_xfer_partial implementation. */ | |
61bb466e | 905 | |
9d46c4e5 PA |
906 | static enum target_xfer_status |
907 | procfs_xfer_partial (struct target_ops *ops, enum target_object object, | |
908 | const char *annex, gdb_byte *readbuf, | |
909 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
910 | ULONGEST *xfered_len) | |
911 | { | |
912 | switch (object) | |
61bb466e | 913 | { |
9d46c4e5 PA |
914 | case TARGET_OBJECT_MEMORY: |
915 | return procfs_xfer_memory (readbuf, writebuf, offset, len, xfered_len); | |
8a6c0ccd AR |
916 | case TARGET_OBJECT_AUXV: |
917 | if (readbuf != NULL) | |
918 | { | |
919 | int err; | |
920 | CORE_ADDR initial_stack; | |
921 | debug_process_t procinfo; | |
922 | /* For 32-bit architecture, size of auxv_t is 8 bytes. */ | |
923 | const unsigned int sizeof_auxv_t = sizeof (auxv_t); | |
924 | const unsigned int sizeof_tempbuf = 20 * sizeof_auxv_t; | |
925 | int tempread; | |
926 | gdb_byte *const tempbuf = alloca (sizeof_tempbuf); | |
927 | ||
928 | if (tempbuf == NULL) | |
929 | return TARGET_XFER_E_IO; | |
930 | ||
931 | err = devctl (ctl_fd, DCMD_PROC_INFO, &procinfo, | |
932 | sizeof procinfo, 0); | |
933 | if (err != EOK) | |
934 | return TARGET_XFER_E_IO; | |
935 | ||
936 | initial_stack = procinfo.initial_stack; | |
937 | ||
938 | /* procfs is always 'self-hosted', no byte-order manipulation. */ | |
939 | tempread = nto_read_auxv_from_initial_stack (initial_stack, tempbuf, | |
940 | sizeof_tempbuf, | |
941 | sizeof (auxv_t)); | |
325fac50 | 942 | tempread = std::min (tempread, len) - offset; |
8a6c0ccd AR |
943 | memcpy (readbuf, tempbuf + offset, tempread); |
944 | *xfered_len = tempread; | |
945 | return tempread ? TARGET_XFER_OK : TARGET_XFER_EOF; | |
946 | } | |
947 | /* Fallthru */ | |
9d46c4e5 PA |
948 | default: |
949 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
774ee6d2 AR |
950 | readbuf, writebuf, offset, len, |
951 | xfered_len); | |
61bb466e | 952 | } |
61bb466e KW |
953 | } |
954 | ||
955 | /* Take a program previously attached to and detaches it. | |
956 | The program resumes execution and will no longer stop | |
957 | on signals, etc. We'd better not have left any breakpoints | |
958 | in the program or it'll die when it hits one. */ | |
959 | static void | |
52554a0e | 960 | procfs_detach (struct target_ops *ops, const char *args, int from_tty) |
61bb466e KW |
961 | { |
962 | int siggnal = 0; | |
7f9f62ba | 963 | int pid; |
61bb466e | 964 | |
0f48b757 PA |
965 | target_announce_detach (); |
966 | ||
61bb466e KW |
967 | if (args) |
968 | siggnal = atoi (args); | |
969 | ||
970 | if (siggnal) | |
dfd4cc63 | 971 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, siggnal, 0, 0); |
61bb466e KW |
972 | |
973 | close (ctl_fd); | |
974 | ctl_fd = -1; | |
7f9f62ba PA |
975 | |
976 | pid = ptid_get_pid (inferior_ptid); | |
61bb466e | 977 | inferior_ptid = null_ptid; |
7f9f62ba PA |
978 | detach_inferior (pid); |
979 | init_thread_list (); | |
6a3cb8e8 | 980 | inf_child_maybe_unpush_target (ops); |
61bb466e KW |
981 | } |
982 | ||
983 | static int | |
984 | procfs_breakpoint (CORE_ADDR addr, int type, int size) | |
985 | { | |
986 | procfs_break brk; | |
987 | ||
988 | brk.type = type; | |
989 | brk.addr = addr; | |
990 | brk.size = size; | |
991 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
992 | if (errno != EOK) | |
993 | return 1; | |
994 | return 0; | |
995 | } | |
996 | ||
997 | static int | |
3db08215 | 998 | procfs_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 999 | struct bp_target_info *bp_tgt) |
61bb466e | 1000 | { |
0d5ed153 | 1001 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f | 1002 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, 0); |
61bb466e KW |
1003 | } |
1004 | ||
1005 | static int | |
3db08215 | 1006 | procfs_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
73971819 PA |
1007 | struct bp_target_info *bp_tgt, |
1008 | enum remove_bp_reason reason) | |
61bb466e | 1009 | { |
8181d85f | 1010 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, -1); |
61bb466e KW |
1011 | } |
1012 | ||
1013 | static int | |
23a26771 | 1014 | procfs_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 1015 | struct bp_target_info *bp_tgt) |
61bb466e | 1016 | { |
0d5ed153 | 1017 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f DJ |
1018 | return procfs_breakpoint (bp_tgt->placed_address, |
1019 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0); | |
61bb466e KW |
1020 | } |
1021 | ||
1022 | static int | |
8476dc92 TT |
1023 | procfs_remove_hw_breakpoint (struct target_ops *self, |
1024 | struct gdbarch *gdbarch, | |
a6d9a66e | 1025 | struct bp_target_info *bp_tgt) |
61bb466e | 1026 | { |
8181d85f DJ |
1027 | return procfs_breakpoint (bp_tgt->placed_address, |
1028 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1); | |
61bb466e KW |
1029 | } |
1030 | ||
1031 | static void | |
28439f5e | 1032 | procfs_resume (struct target_ops *ops, |
2ea28649 | 1033 | ptid_t ptid, int step, enum gdb_signal signo) |
61bb466e KW |
1034 | { |
1035 | int signal_to_pass; | |
1036 | procfs_status status; | |
14ef7606 | 1037 | sigset_t *run_fault = (sigset_t *) (void *) &run.fault; |
61bb466e KW |
1038 | |
1039 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1040 | return; | |
1041 | ||
1042 | procfs_set_thread (ptid_equal (ptid, minus_one_ptid) ? inferior_ptid : | |
1043 | ptid); | |
1044 | ||
1045 | run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE; | |
1046 | if (step) | |
1047 | run.flags |= _DEBUG_RUN_STEP; | |
1048 | ||
14ef7606 AR |
1049 | sigemptyset (run_fault); |
1050 | sigaddset (run_fault, FLTBPT); | |
1051 | sigaddset (run_fault, FLTTRACE); | |
1052 | sigaddset (run_fault, FLTILL); | |
1053 | sigaddset (run_fault, FLTPRIV); | |
1054 | sigaddset (run_fault, FLTBOUNDS); | |
1055 | sigaddset (run_fault, FLTIOVF); | |
1056 | sigaddset (run_fault, FLTIZDIV); | |
1057 | sigaddset (run_fault, FLTFPE); | |
61bb466e | 1058 | /* Peter V will be changing this at some point. */ |
14ef7606 | 1059 | sigaddset (run_fault, FLTPAGE); |
61bb466e KW |
1060 | |
1061 | run.flags |= _DEBUG_RUN_ARM; | |
1062 | ||
2ea28649 | 1063 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
1064 | |
1065 | if (signal_to_pass) | |
1066 | { | |
1067 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
2ea28649 | 1068 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
1069 | if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED)) |
1070 | { | |
1071 | if (signal_to_pass != status.info.si_signo) | |
1072 | { | |
dfd4cc63 | 1073 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, |
d737fd7f | 1074 | signal_to_pass, 0, 0); |
61bb466e KW |
1075 | run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG; |
1076 | } | |
0df8b418 | 1077 | else /* Let it kill the program without telling us. */ |
61bb466e KW |
1078 | sigdelset (&run.trace, signal_to_pass); |
1079 | } | |
1080 | } | |
1081 | else | |
1082 | run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT; | |
1083 | ||
1084 | errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0); | |
1085 | if (errno != EOK) | |
1086 | { | |
9b20d036 | 1087 | perror (_("run error!\n")); |
61bb466e KW |
1088 | return; |
1089 | } | |
1090 | } | |
1091 | ||
1092 | static void | |
136d6dae | 1093 | procfs_mourn_inferior (struct target_ops *ops) |
61bb466e KW |
1094 | { |
1095 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
1096 | { | |
dfd4cc63 | 1097 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, SIGKILL, 0, 0); |
61bb466e KW |
1098 | close (ctl_fd); |
1099 | } | |
1100 | inferior_ptid = null_ptid; | |
1101 | init_thread_list (); | |
c1ee2fb3 | 1102 | inf_child_mourn_inferior (ops); |
61bb466e KW |
1103 | } |
1104 | ||
1105 | /* This function breaks up an argument string into an argument | |
1106 | vector suitable for passing to execvp(). | |
1107 | E.g., on "run a b c d" this routine would get as input | |
1108 | the string "a b c d", and as output it would fill in argv with | |
1109 | the four arguments "a", "b", "c", "d". The only additional | |
1110 | functionality is simple quoting. The gdb command: | |
1111 | run a "b c d" f | |
1112 | will fill in argv with the three args "a", "b c d", "e". */ | |
1113 | static void | |
1114 | breakup_args (char *scratch, char **argv) | |
1115 | { | |
1116 | char *pp, *cp = scratch; | |
1117 | char quoting = 0; | |
1118 | ||
1119 | for (;;) | |
1120 | { | |
1121 | /* Scan past leading separators. */ | |
1122 | quoting = 0; | |
1123 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') | |
1124 | cp++; | |
1125 | ||
1126 | /* Break if at end of string. */ | |
1127 | if (*cp == '\0') | |
1128 | break; | |
1129 | ||
1130 | /* Take an arg. */ | |
1131 | if (*cp == '"') | |
1132 | { | |
1133 | cp++; | |
1134 | quoting = strchr (cp, '"') ? 1 : 0; | |
1135 | } | |
1136 | ||
1137 | *argv++ = cp; | |
1138 | ||
1139 | /* Scan for next arg separator. */ | |
1140 | pp = cp; | |
1141 | if (quoting) | |
1142 | cp = strchr (pp, '"'); | |
1143 | if ((cp == NULL) || (!quoting)) | |
1144 | cp = strchr (pp, ' '); | |
1145 | if (cp == NULL) | |
1146 | cp = strchr (pp, '\t'); | |
1147 | if (cp == NULL) | |
1148 | cp = strchr (pp, '\n'); | |
1149 | ||
1150 | /* No separators => end of string => break. */ | |
1151 | if (cp == NULL) | |
1152 | { | |
1153 | pp = cp; | |
1154 | break; | |
1155 | } | |
1156 | ||
1157 | /* Replace the separator with a terminator. */ | |
1158 | *cp++ = '\0'; | |
1159 | } | |
1160 | ||
1161 | /* Execv requires a null-terminated arg vector. */ | |
1162 | *argv = NULL; | |
1163 | } | |
1164 | ||
1165 | static void | |
7c5ded6a SDJ |
1166 | procfs_create_inferior (struct target_ops *ops, const char *exec_file, |
1167 | const std::string &allargs, | |
1168 | char **env, int from_tty) | |
61bb466e KW |
1169 | { |
1170 | struct inheritance inherit; | |
1171 | pid_t pid; | |
1172 | int flags, errn; | |
1173 | char **argv, *args; | |
3cb3b8df | 1174 | const char *in = "", *out = "", *err = ""; |
61bb466e KW |
1175 | int fd, fds[3]; |
1176 | sigset_t set; | |
3cb3b8df | 1177 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
3fdfcbf1 | 1178 | struct inferior *inf; |
61bb466e | 1179 | |
7c5ded6a | 1180 | argv = xmalloc ((allargs.size () / (unsigned) 2 + 2) * |
61bb466e KW |
1181 | sizeof (*argv)); |
1182 | argv[0] = get_exec_file (1); | |
1183 | if (!argv[0]) | |
1184 | { | |
1185 | if (exec_file) | |
1186 | argv[0] = exec_file; | |
1187 | else | |
1188 | return; | |
1189 | } | |
1190 | ||
7c5ded6a | 1191 | args = xstrdup (allargs.c_str ()); |
609c3040 | 1192 | breakup_args (args, (exec_file != NULL) ? &argv[1] : &argv[0]); |
61bb466e KW |
1193 | |
1194 | argv = nto_parse_redirection (argv, &in, &out, &err); | |
1195 | ||
1196 | fds[0] = STDIN_FILENO; | |
1197 | fds[1] = STDOUT_FILENO; | |
1198 | fds[2] = STDERR_FILENO; | |
1199 | ||
1200 | /* If the user specified I/O via gdb's --tty= arg, use it, but only | |
1201 | if the i/o is not also being specified via redirection. */ | |
1202 | if (inferior_io_terminal) | |
1203 | { | |
1204 | if (!in[0]) | |
1205 | in = inferior_io_terminal; | |
1206 | if (!out[0]) | |
1207 | out = inferior_io_terminal; | |
1208 | if (!err[0]) | |
1209 | err = inferior_io_terminal; | |
1210 | } | |
1211 | ||
1212 | if (in[0]) | |
1213 | { | |
1214 | fd = open (in, O_RDONLY); | |
1215 | if (fd == -1) | |
1216 | perror (in); | |
1217 | else | |
1218 | fds[0] = fd; | |
1219 | } | |
1220 | if (out[0]) | |
1221 | { | |
1222 | fd = open (out, O_WRONLY); | |
1223 | if (fd == -1) | |
1224 | perror (out); | |
1225 | else | |
1226 | fds[1] = fd; | |
1227 | } | |
1228 | if (err[0]) | |
1229 | { | |
1230 | fd = open (err, O_WRONLY); | |
1231 | if (fd == -1) | |
1232 | perror (err); | |
1233 | else | |
1234 | fds[2] = fd; | |
1235 | } | |
1236 | ||
1237 | /* Clear any pending SIGUSR1's but keep the behavior the same. */ | |
1238 | signal (SIGUSR1, signal (SIGUSR1, SIG_IGN)); | |
1239 | ||
1240 | sigemptyset (&set); | |
1241 | sigaddset (&set, SIGUSR1); | |
1242 | sigprocmask (SIG_UNBLOCK, &set, NULL); | |
1243 | ||
1244 | memset (&inherit, 0, sizeof (inherit)); | |
1245 | ||
1246 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0) | |
1247 | { | |
d737fd7f | 1248 | inherit.nd = nto_node (); |
61bb466e KW |
1249 | inherit.flags |= SPAWN_SETND; |
1250 | inherit.flags &= ~SPAWN_EXEC; | |
1251 | } | |
1252 | inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD; | |
1253 | inherit.pgroup = SPAWN_NEWPGROUP; | |
1254 | pid = spawnp (argv[0], 3, fds, &inherit, argv, | |
1255 | ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0); | |
1256 | xfree (args); | |
1257 | ||
1258 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1259 | ||
1260 | if (pid == -1) | |
8a3fe4f8 | 1261 | error (_("Error spawning %s: %d (%s)"), argv[0], errno, |
d737fd7f | 1262 | safe_strerror (errno)); |
61bb466e KW |
1263 | |
1264 | if (fds[0] != STDIN_FILENO) | |
1265 | close (fds[0]); | |
1266 | if (fds[1] != STDOUT_FILENO) | |
1267 | close (fds[1]); | |
1268 | if (fds[2] != STDERR_FILENO) | |
1269 | close (fds[2]); | |
1270 | ||
1271 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
e8032dde | 1272 | procfs_update_thread_list (ops); |
61bb466e | 1273 | |
6c95b8df PA |
1274 | inf = current_inferior (); |
1275 | inferior_appeared (inf, pid); | |
3fdfcbf1 | 1276 | inf->attach_flag = 0; |
7f9f62ba | 1277 | |
61bb466e KW |
1278 | flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */ |
1279 | errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0); | |
1280 | if (errn != EOK) | |
1281 | { | |
1282 | /* FIXME: expected warning? */ | |
1283 | /* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n", | |
1284 | errn, strerror(errn) ); */ | |
1285 | } | |
6a3cb8e8 PA |
1286 | if (!target_is_pushed (ops)) |
1287 | push_target (ops); | |
223ffa71 | 1288 | target_terminal::init (); |
61bb466e | 1289 | |
61bb466e KW |
1290 | if (exec_bfd != NULL |
1291 | || (symfile_objfile != NULL && symfile_objfile->obfd != NULL)) | |
268a4a75 | 1292 | solib_create_inferior_hook (0); |
61bb466e KW |
1293 | } |
1294 | ||
1295 | static void | |
bfedc46a | 1296 | procfs_interrupt (struct target_ops *self, ptid_t ptid) |
61bb466e KW |
1297 | { |
1298 | devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0); | |
1299 | } | |
1300 | ||
1301 | static void | |
7d85a9c0 | 1302 | procfs_kill_inferior (struct target_ops *ops) |
61bb466e | 1303 | { |
bc1e6c81 | 1304 | target_mourn_inferior (inferior_ptid); |
61bb466e KW |
1305 | } |
1306 | ||
61bb466e KW |
1307 | /* Fill buf with regset and return devctl cmd to do the setting. Return |
1308 | -1 if we fail to get the regset. Store size of regset in regsize. */ | |
1309 | static int | |
1310 | get_regset (int regset, char *buf, int bufsize, int *regsize) | |
1311 | { | |
1312 | int dev_get, dev_set; | |
1313 | switch (regset) | |
1314 | { | |
1315 | case NTO_REG_GENERAL: | |
1316 | dev_get = DCMD_PROC_GETGREG; | |
1317 | dev_set = DCMD_PROC_SETGREG; | |
1318 | break; | |
1319 | ||
1320 | case NTO_REG_FLOAT: | |
1321 | dev_get = DCMD_PROC_GETFPREG; | |
1322 | dev_set = DCMD_PROC_SETFPREG; | |
1323 | break; | |
1324 | ||
1325 | case NTO_REG_ALT: | |
1326 | dev_get = DCMD_PROC_GETALTREG; | |
1327 | dev_set = DCMD_PROC_SETALTREG; | |
1328 | break; | |
1329 | ||
1330 | case NTO_REG_SYSTEM: | |
1331 | default: | |
1332 | return -1; | |
1333 | } | |
97c44116 | 1334 | if (devctl (ctl_fd, dev_get, buf, bufsize, regsize) != EOK) |
61bb466e KW |
1335 | return -1; |
1336 | ||
1337 | return dev_set; | |
1338 | } | |
1339 | ||
774ee6d2 | 1340 | static void |
28439f5e PA |
1341 | procfs_store_registers (struct target_ops *ops, |
1342 | struct regcache *regcache, int regno) | |
61bb466e KW |
1343 | { |
1344 | union | |
1345 | { | |
1346 | procfs_greg greg; | |
1347 | procfs_fpreg fpreg; | |
1348 | procfs_altreg altreg; | |
1349 | } | |
1350 | reg; | |
1351 | unsigned off; | |
1352 | int len, regset, regsize, dev_set, err; | |
1353 | char *data; | |
bcc0c096 | 1354 | ptid_t ptid = regcache_get_ptid (regcache); |
61bb466e | 1355 | |
bcc0c096 | 1356 | if (ptid_equal (ptid, null_ptid)) |
61bb466e | 1357 | return; |
bcc0c096 | 1358 | procfs_set_thread (ptid); |
61bb466e KW |
1359 | |
1360 | if (regno == -1) | |
1361 | { | |
1362 | for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++) | |
1363 | { | |
1364 | dev_set = get_regset (regset, (char *) ®, | |
1365 | sizeof (reg), ®size); | |
1366 | if (dev_set == -1) | |
1367 | continue; | |
1368 | ||
56be3814 | 1369 | if (nto_regset_fill (regcache, regset, (char *) ®) == -1) |
61bb466e KW |
1370 | continue; |
1371 | ||
1372 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1373 | if (err != EOK) | |
1374 | fprintf_unfiltered (gdb_stderr, | |
1375 | "Warning unable to write regset %d: %s\n", | |
dc5dd1eb | 1376 | regno, safe_strerror (err)); |
61bb466e KW |
1377 | } |
1378 | } | |
1379 | else | |
1380 | { | |
1381 | regset = nto_regset_id (regno); | |
1382 | if (regset == -1) | |
1383 | return; | |
1384 | ||
1385 | dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size); | |
1386 | if (dev_set == -1) | |
1387 | return; | |
1388 | ||
60441ab9 UW |
1389 | len = nto_register_area (get_regcache_arch (regcache), |
1390 | regno, regset, &off); | |
61bb466e KW |
1391 | |
1392 | if (len < 1) | |
1393 | return; | |
1394 | ||
56be3814 | 1395 | regcache_raw_collect (regcache, regno, (char *) ® + off); |
61bb466e KW |
1396 | |
1397 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1398 | if (err != EOK) | |
1399 | fprintf_unfiltered (gdb_stderr, | |
1400 | "Warning unable to write regset %d: %s\n", regno, | |
dc5dd1eb | 1401 | safe_strerror (err)); |
61bb466e KW |
1402 | } |
1403 | } | |
1404 | ||
2455069d UW |
1405 | /* Set list of signals to be handled in the target. */ |
1406 | ||
61bb466e | 1407 | static void |
94bedb42 TT |
1408 | procfs_pass_signals (struct target_ops *self, |
1409 | int numsigs, unsigned char *pass_signals) | |
61bb466e KW |
1410 | { |
1411 | int signo; | |
1412 | ||
2455069d UW |
1413 | sigfillset (&run.trace); |
1414 | ||
61bb466e KW |
1415 | for (signo = 1; signo < NSIG; signo++) |
1416 | { | |
2ea28649 | 1417 | int target_signo = gdb_signal_from_host (signo); |
2455069d UW |
1418 | if (target_signo < numsigs && pass_signals[target_signo]) |
1419 | sigdelset (&run.trace, signo); | |
61bb466e KW |
1420 | } |
1421 | } | |
1422 | ||
94c74239 | 1423 | static char * |
117de6a9 | 1424 | procfs_pid_to_str (struct target_ops *ops, ptid_t ptid) |
61bb466e KW |
1425 | { |
1426 | static char buf[1024]; | |
1427 | int pid, tid, n; | |
1428 | struct tidinfo *tip; | |
1429 | ||
1430 | pid = ptid_get_pid (ptid); | |
1431 | tid = ptid_get_tid (ptid); | |
1432 | ||
dc5dd1eb | 1433 | n = snprintf (buf, 1023, "process %d", pid); |
61bb466e KW |
1434 | |
1435 | #if 0 /* NYI */ | |
1436 | tip = procfs_thread_info (pid, tid); | |
1437 | if (tip != NULL) | |
dc5dd1eb | 1438 | snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state); |
61bb466e KW |
1439 | #endif |
1440 | ||
1441 | return buf; | |
1442 | } | |
1443 | ||
132f8e03 PA |
1444 | /* to_can_run implementation for "target procfs". Note this really |
1445 | means "can this target be the default run target", which there can | |
1446 | be only one, and we make it be "target native" like other ports. | |
1447 | "target procfs <node>" wouldn't make sense as default run target, as | |
1448 | it needs <node>. */ | |
ee8e9165 | 1449 | |
132f8e03 PA |
1450 | static int |
1451 | procfs_can_run (struct target_ops *self) | |
1452 | { | |
1453 | return 0; | |
1454 | } | |
1455 | ||
1456 | /* "target procfs". */ | |
1457 | static struct target_ops nto_procfs_ops; | |
1458 | ||
6a3cb8e8 PA |
1459 | /* "target native". */ |
1460 | static struct target_ops *nto_native_ops; | |
1461 | ||
1462 | /* to_open implementation for "target procfs". */ | |
1463 | ||
1464 | static void | |
014f9477 | 1465 | procfs_open (const char *arg, int from_tty) |
6a3cb8e8 PA |
1466 | { |
1467 | procfs_open_1 (&nto_procfs_ops, arg, from_tty); | |
1468 | } | |
1469 | ||
1470 | /* to_open implementation for "target native". */ | |
1471 | ||
1472 | static void | |
014f9477 | 1473 | procfs_native_open (const char *arg, int from_tty) |
6a3cb8e8 PA |
1474 | { |
1475 | procfs_open_1 (nto_native_ops, arg, from_tty); | |
1476 | } | |
1477 | ||
132f8e03 PA |
1478 | /* Create the "native" and "procfs" targets. */ |
1479 | ||
1480 | static void | |
1481 | init_procfs_targets (void) | |
61bb466e | 1482 | { |
ee8e9165 PA |
1483 | struct target_ops *t = inf_child_target (); |
1484 | ||
132f8e03 PA |
1485 | /* Leave to_shortname as "native". */ |
1486 | t->to_longname = "QNX Neutrino local process"; | |
1487 | t->to_doc = "QNX Neutrino local process (started by the \"run\" command)."; | |
6a3cb8e8 | 1488 | t->to_open = procfs_native_open; |
ee8e9165 PA |
1489 | t->to_attach = procfs_attach; |
1490 | t->to_post_attach = procfs_post_attach; | |
1491 | t->to_detach = procfs_detach; | |
1492 | t->to_resume = procfs_resume; | |
1493 | t->to_wait = procfs_wait; | |
1494 | t->to_fetch_registers = procfs_fetch_registers; | |
1495 | t->to_store_registers = procfs_store_registers; | |
1496 | t->to_xfer_partial = procfs_xfer_partial; | |
1497 | t->to_files_info = procfs_files_info; | |
1498 | t->to_insert_breakpoint = procfs_insert_breakpoint; | |
1499 | t->to_remove_breakpoint = procfs_remove_breakpoint; | |
1500 | t->to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint; | |
1501 | t->to_insert_hw_breakpoint = procfs_insert_hw_breakpoint; | |
1502 | t->to_remove_hw_breakpoint = procfs_remove_hw_breakpoint; | |
1503 | t->to_insert_watchpoint = procfs_insert_hw_watchpoint; | |
1504 | t->to_remove_watchpoint = procfs_remove_hw_watchpoint; | |
1505 | t->to_stopped_by_watchpoint = procfs_stopped_by_watchpoint; | |
1506 | t->to_kill = procfs_kill_inferior; | |
1507 | t->to_create_inferior = procfs_create_inferior; | |
1508 | t->to_mourn_inferior = procfs_mourn_inferior; | |
1509 | t->to_pass_signals = procfs_pass_signals; | |
1510 | t->to_thread_alive = procfs_thread_alive; | |
e8032dde | 1511 | t->to_update_thread_list = procfs_update_thread_list; |
ee8e9165 | 1512 | t->to_pid_to_str = procfs_pid_to_str; |
bfedc46a | 1513 | t->to_interrupt = procfs_interrupt; |
ee8e9165 PA |
1514 | t->to_have_continuable_watchpoint = 1; |
1515 | t->to_extra_thread_info = nto_extra_thread_info; | |
e5343fde | 1516 | t->to_pid_to_exec_file = procfs_pid_to_exec_file; |
ee8e9165 | 1517 | |
6a3cb8e8 PA |
1518 | nto_native_ops = t; |
1519 | ||
132f8e03 PA |
1520 | /* Register "target native". This is the default run target. */ |
1521 | add_target (t); | |
1522 | ||
1523 | /* Register "target procfs <node>". */ | |
1524 | nto_procfs_ops = *t; | |
1525 | nto_procfs_ops.to_shortname = "procfs"; | |
1526 | nto_procfs_ops.to_can_run = procfs_can_run; | |
1527 | t->to_longname = "QNX Neutrino local or remote process"; | |
1528 | t->to_doc = "QNX Neutrino process. target procfs <node>"; | |
6a3cb8e8 PA |
1529 | t->to_open = procfs_open; |
1530 | ||
132f8e03 | 1531 | add_target (&nto_procfs_ops); |
61bb466e KW |
1532 | } |
1533 | ||
1534 | #define OSTYPE_NTO 1 | |
1535 | ||
1536 | void | |
dc5dd1eb | 1537 | _initialize_procfs (void) |
61bb466e KW |
1538 | { |
1539 | sigset_t set; | |
1540 | ||
132f8e03 | 1541 | init_procfs_targets (); |
61bb466e KW |
1542 | |
1543 | /* We use SIGUSR1 to gain control after we block waiting for a process. | |
1544 | We use sigwaitevent to wait. */ | |
1545 | sigemptyset (&set); | |
1546 | sigaddset (&set, SIGUSR1); | |
1547 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1548 | ||
2455069d UW |
1549 | /* Initially, make sure all signals are reported. */ |
1550 | sigfillset (&run.trace); | |
61bb466e KW |
1551 | |
1552 | /* Stuff some information. */ | |
1553 | nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags; | |
1554 | nto_cpuinfo_valid = 1; | |
1555 | ||
1bedd215 AC |
1556 | add_info ("pidlist", procfs_pidlist, _("pidlist")); |
1557 | add_info ("meminfo", procfs_meminfo, _("memory information")); | |
d737fd7f KW |
1558 | |
1559 | nto_is_nto_target = procfs_is_nto_target; | |
61bb466e KW |
1560 | } |
1561 | ||
1562 | ||
1563 | static int | |
f486487f | 1564 | procfs_hw_watchpoint (int addr, int len, enum target_hw_bp_type type) |
61bb466e KW |
1565 | { |
1566 | procfs_break brk; | |
1567 | ||
1568 | switch (type) | |
1569 | { | |
f486487f | 1570 | case hw_read: |
61bb466e KW |
1571 | brk.type = _DEBUG_BREAK_RD; |
1572 | break; | |
f486487f | 1573 | case hw_access: |
61bb466e KW |
1574 | brk.type = _DEBUG_BREAK_RW; |
1575 | break; | |
1576 | default: /* Modify. */ | |
1577 | /* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */ | |
1578 | brk.type = _DEBUG_BREAK_RW; | |
1579 | } | |
1580 | brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */ | |
1581 | brk.addr = addr; | |
1582 | brk.size = len; | |
1583 | ||
1584 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1585 | if (errno != EOK) | |
1586 | { | |
9b20d036 | 1587 | perror (_("Failed to set hardware watchpoint")); |
61bb466e KW |
1588 | return -1; |
1589 | } | |
1590 | return 0; | |
1591 | } | |
1592 | ||
1593 | static int | |
5461485a | 1594 | procfs_can_use_hw_breakpoint (struct target_ops *self, |
f486487f SM |
1595 | enum bptype type, |
1596 | int cnt, int othertype) | |
61bb466e KW |
1597 | { |
1598 | return 1; | |
1599 | } | |
1600 | ||
1601 | static int | |
11b5219a | 1602 | procfs_remove_hw_watchpoint (struct target_ops *self, |
f486487f SM |
1603 | CORE_ADDR addr, int len, |
1604 | enum target_hw_bp_type type, | |
0cf6dd15 | 1605 | struct expression *cond) |
61bb466e KW |
1606 | { |
1607 | return procfs_hw_watchpoint (addr, -1, type); | |
1608 | } | |
1609 | ||
1610 | static int | |
7bb99c53 | 1611 | procfs_insert_hw_watchpoint (struct target_ops *self, |
f486487f SM |
1612 | CORE_ADDR addr, int len, |
1613 | enum target_hw_bp_type type, | |
0cf6dd15 | 1614 | struct expression *cond) |
61bb466e KW |
1615 | { |
1616 | return procfs_hw_watchpoint (addr, len, type); | |
1617 | } | |
1618 | ||
1619 | static int | |
6a109b6b | 1620 | procfs_stopped_by_watchpoint (struct target_ops *ops) |
61bb466e | 1621 | { |
a9889169 AR |
1622 | /* NOTE: nto_stopped_by_watchpoint will be called ONLY while we are |
1623 | stopped due to a SIGTRAP. This assumes gdb works in 'all-stop' mode; | |
1624 | future gdb versions will likely run in 'non-stop' mode in which case | |
1625 | we will have to store/examine statuses per thread in question. | |
1626 | Until then, this will work fine. */ | |
1627 | ||
1628 | struct inferior *inf = current_inferior (); | |
1629 | struct nto_inferior_data *inf_data; | |
1630 | ||
1631 | gdb_assert (inf != NULL); | |
1632 | ||
1633 | inf_data = nto_inferior_data (inf); | |
1634 | ||
1635 | return inf_data->stopped_flags | |
1636 | & (_DEBUG_FLAG_TRACE_RD | |
1637 | | _DEBUG_FLAG_TRACE_WR | |
1638 | | _DEBUG_FLAG_TRACE_MODIFY); | |
61bb466e | 1639 | } |