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 | |
e2882c85 | 4 | Copyright (C) 2003-2018 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" |
5dc1a704 | 46 | #include "common/scoped_fd.h" |
61bb466e KW |
47 | |
48 | #define NULL_PID 0 | |
49 | #define _DEBUG_FLAG_TRACE (_DEBUG_FLAG_TRACE_EXEC|_DEBUG_FLAG_TRACE_RD|\ | |
50 | _DEBUG_FLAG_TRACE_WR|_DEBUG_FLAG_TRACE_MODIFY) | |
51 | ||
61bb466e KW |
52 | int ctl_fd; |
53 | ||
a40805d4 | 54 | static sighandler_t ofunc; |
61bb466e KW |
55 | |
56 | static procfs_run run; | |
57 | ||
61bb466e KW |
58 | static ptid_t do_attach (ptid_t ptid); |
59 | ||
5461485a | 60 | static int procfs_can_use_hw_breakpoint (struct target_ops *self, |
774ee6d2 | 61 | enum bptype, int, int); |
61bb466e | 62 | |
7bb99c53 | 63 | static int procfs_insert_hw_watchpoint (struct target_ops *self, |
f486487f SM |
64 | CORE_ADDR addr, int len, |
65 | enum target_hw_bp_type type, | |
a8f42b45 | 66 | struct expression *cond); |
61bb466e | 67 | |
11b5219a | 68 | static int procfs_remove_hw_watchpoint (struct target_ops *self, |
f486487f SM |
69 | CORE_ADDR addr, int len, |
70 | enum target_hw_bp_type type, | |
a8f42b45 | 71 | struct expression *cond); |
61bb466e | 72 | |
6a109b6b | 73 | static int procfs_stopped_by_watchpoint (struct target_ops *ops); |
61bb466e | 74 | |
6a3cb8e8 | 75 | /* These two globals are only ever set in procfs_open_1, but are |
61bb466e KW |
76 | referenced elsewhere. 'nto_procfs_node' is a flag used to say |
77 | whether we are local, or we should get the current node descriptor | |
78 | for the remote QNX node. */ | |
609c3040 | 79 | static char *nodestr; |
61bb466e KW |
80 | static unsigned nto_procfs_node = ND_LOCAL_NODE; |
81 | ||
82 | /* Return the current QNX Node, or error out. This is a simple | |
83 | wrapper for the netmgr_strtond() function. The reason this | |
84 | is required is because QNX node descriptors are transient so | |
85 | we have to re-acquire them every time. */ | |
86 | static unsigned | |
d737fd7f | 87 | nto_node (void) |
61bb466e KW |
88 | { |
89 | unsigned node; | |
90 | ||
609c3040 AR |
91 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 |
92 | || nodestr == NULL) | |
61bb466e KW |
93 | return ND_LOCAL_NODE; |
94 | ||
609c3040 | 95 | node = netmgr_strtond (nodestr, 0); |
61bb466e | 96 | if (node == -1) |
8a3fe4f8 | 97 | error (_("Lost the QNX node. Debug session probably over.")); |
61bb466e KW |
98 | |
99 | return (node); | |
100 | } | |
101 | ||
d737fd7f KW |
102 | static enum gdb_osabi |
103 | procfs_is_nto_target (bfd *abfd) | |
104 | { | |
105 | return GDB_OSABI_QNXNTO; | |
106 | } | |
107 | ||
6a3cb8e8 PA |
108 | /* This is called when we call 'target native' or 'target procfs |
109 | <arg>' from the (gdb) prompt. For QNX6 (nto), the only valid arg | |
110 | will be a QNX node string, eg: "/net/some_node". If arg is not a | |
111 | valid QNX node, we will default to local. */ | |
61bb466e | 112 | static void |
014f9477 | 113 | procfs_open_1 (struct target_ops *ops, const char *arg, int from_tty) |
61bb466e | 114 | { |
61bb466e KW |
115 | char *endstr; |
116 | char buffer[50]; | |
5dc1a704 | 117 | int total_size; |
61bb466e | 118 | procfs_sysinfo *sysinfo; |
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 | 160 | |
5dc1a704 TT |
161 | scoped_fd fd (open (nto_procfs_path, O_RDONLY)); |
162 | if (fd.get () == -1) | |
61bb466e KW |
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 KW |
167 | } |
168 | ||
169 | sysinfo = (void *) buffer; | |
5dc1a704 | 170 | if (devctl (fd.get (), DCMD_PROC_SYSINFO, sysinfo, sizeof buffer, 0) != EOK) |
61bb466e KW |
171 | { |
172 | printf_filtered ("Error getting size: %d (%s)\n", errno, | |
dc5dd1eb | 173 | safe_strerror (errno)); |
8a3fe4f8 | 174 | error (_("Devctl failed.")); |
61bb466e KW |
175 | } |
176 | else | |
177 | { | |
178 | total_size = sysinfo->total_size; | |
179 | sysinfo = alloca (total_size); | |
609c3040 | 180 | if (sysinfo == NULL) |
61bb466e KW |
181 | { |
182 | printf_filtered ("Memory error: %d (%s)\n", errno, | |
dc5dd1eb | 183 | safe_strerror (errno)); |
8a3fe4f8 | 184 | error (_("alloca failed.")); |
61bb466e KW |
185 | } |
186 | else | |
187 | { | |
5dc1a704 TT |
188 | if (devctl (fd.get (), DCMD_PROC_SYSINFO, sysinfo, total_size, 0) |
189 | != EOK) | |
61bb466e KW |
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 | } | |
6a3cb8e8 PA |
204 | |
205 | inf_child_open_target (ops, arg, from_tty); | |
61bb466e KW |
206 | printf_filtered ("Debugging using %s\n", nto_procfs_path); |
207 | } | |
208 | ||
209 | static void | |
210 | procfs_set_thread (ptid_t ptid) | |
211 | { | |
212 | pid_t tid; | |
213 | ||
214 | tid = ptid_get_tid (ptid); | |
215 | devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0); | |
216 | } | |
217 | ||
218 | /* Return nonzero if the thread TH is still alive. */ | |
219 | static int | |
28439f5e | 220 | procfs_thread_alive (struct target_ops *ops, ptid_t ptid) |
61bb466e KW |
221 | { |
222 | pid_t tid; | |
745a434e AR |
223 | pid_t pid; |
224 | procfs_status status; | |
225 | int err; | |
61bb466e KW |
226 | |
227 | tid = ptid_get_tid (ptid); | |
745a434e AR |
228 | pid = ptid_get_pid (ptid); |
229 | ||
230 | if (kill (pid, 0) == -1) | |
231 | return 0; | |
232 | ||
233 | status.tid = tid; | |
234 | if ((err = devctl (ctl_fd, DCMD_PROC_TIDSTATUS, | |
235 | &status, sizeof (status), 0)) != EOK) | |
236 | return 0; | |
237 | ||
238 | /* Thread is alive or dead but not yet joined, | |
239 | or dead and there is an alive (or dead unjoined) thread with | |
240 | higher tid. | |
241 | ||
242 | If the tid is not the same as requested, requested tid is dead. */ | |
243 | return (status.tid == tid) && (status.state != STATE_DEAD); | |
244 | } | |
245 | ||
246 | static void | |
247 | update_thread_private_data_name (struct thread_info *new_thread, | |
248 | const char *newname) | |
249 | { | |
7aabaf9d | 250 | nto_thread_info *pti = get_nto_thread_info (new_thread); |
745a434e AR |
251 | |
252 | gdb_assert (newname != NULL); | |
253 | gdb_assert (new_thread != NULL); | |
7aabaf9d SM |
254 | |
255 | if (pti) | |
745a434e | 256 | { |
7aabaf9d SM |
257 | pti = new nto_thread_info; |
258 | new_thread->priv.reset (pti); | |
745a434e | 259 | } |
7aabaf9d SM |
260 | |
261 | pti->name = newname; | |
745a434e AR |
262 | } |
263 | ||
264 | static void | |
265 | update_thread_private_data (struct thread_info *new_thread, | |
266 | pthread_t tid, int state, int flags) | |
267 | { | |
745a434e AR |
268 | procfs_info pidinfo; |
269 | struct _thread_name *tn; | |
270 | procfs_threadctl tctl; | |
271 | ||
272 | #if _NTO_VERSION > 630 | |
273 | gdb_assert (new_thread != NULL); | |
274 | ||
275 | if (devctl (ctl_fd, DCMD_PROC_INFO, &pidinfo, | |
276 | sizeof(pidinfo), 0) != EOK) | |
277 | return; | |
278 | ||
279 | memset (&tctl, 0, sizeof (tctl)); | |
280 | tctl.cmd = _NTO_TCTL_NAME; | |
281 | tn = (struct _thread_name *) (&tctl.data); | |
282 | ||
283 | /* Fetch name for the given thread. */ | |
284 | tctl.tid = tid; | |
285 | tn->name_buf_len = sizeof (tctl.data) - sizeof (*tn); | |
286 | tn->new_name_len = -1; /* Getting, not setting. */ | |
287 | if (devctl (ctl_fd, DCMD_PROC_THREADCTL, &tctl, sizeof (tctl), NULL) != EOK) | |
288 | tn->name_buf[0] = '\0'; | |
289 | ||
290 | tn->name_buf[_NTO_THREAD_NAME_MAX] = '\0'; | |
291 | ||
292 | update_thread_private_data_name (new_thread, tn->name_buf); | |
293 | ||
7aabaf9d | 294 | nto_thread_info *pti = get_nto_thread_info (new_thread); |
745a434e AR |
295 | pti->tid = tid; |
296 | pti->state = state; | |
297 | pti->flags = flags; | |
298 | #endif /* _NTO_VERSION */ | |
61bb466e KW |
299 | } |
300 | ||
94c74239 | 301 | static void |
e8032dde | 302 | procfs_update_thread_list (struct target_ops *ops) |
61bb466e KW |
303 | { |
304 | procfs_status status; | |
305 | pid_t pid; | |
306 | ptid_t ptid; | |
745a434e AR |
307 | pthread_t tid; |
308 | struct thread_info *new_thread; | |
61bb466e KW |
309 | |
310 | if (ctl_fd == -1) | |
311 | return; | |
312 | ||
e8032dde PA |
313 | prune_threads (); |
314 | ||
61bb466e KW |
315 | pid = ptid_get_pid (inferior_ptid); |
316 | ||
745a434e AR |
317 | status.tid = 1; |
318 | ||
319 | for (tid = 1;; ++tid) | |
61bb466e | 320 | { |
745a434e AR |
321 | if (status.tid == tid |
322 | && (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0) | |
323 | != EOK)) | |
61bb466e | 324 | break; |
745a434e AR |
325 | if (status.tid != tid) |
326 | /* The reason why this would not be equal is that devctl might have | |
327 | returned different tid, meaning the requested tid no longer exists | |
328 | (e.g. thread exited). */ | |
329 | continue; | |
330 | ptid = ptid_build (pid, 0, tid); | |
331 | new_thread = find_thread_ptid (ptid); | |
332 | if (!new_thread) | |
333 | new_thread = add_thread (ptid); | |
334 | update_thread_private_data (new_thread, tid, status.state, 0); | |
335 | status.tid++; | |
61bb466e KW |
336 | } |
337 | return; | |
338 | } | |
339 | ||
9fe4a216 TT |
340 | static void |
341 | do_closedir_cleanup (void *dir) | |
342 | { | |
343 | closedir (dir); | |
344 | } | |
345 | ||
774ee6d2 | 346 | static void |
1d12d88f | 347 | procfs_pidlist (const char *args, int from_tty) |
61bb466e KW |
348 | { |
349 | DIR *dp = NULL; | |
350 | struct dirent *dirp = NULL; | |
609c3040 | 351 | char buf[PATH_MAX]; |
61bb466e KW |
352 | procfs_info *pidinfo = NULL; |
353 | procfs_debuginfo *info = NULL; | |
354 | procfs_status *status = NULL; | |
355 | pid_t num_threads = 0; | |
356 | pid_t pid; | |
357 | char name[512]; | |
9fe4a216 | 358 | struct cleanup *cleanups; |
609c3040 | 359 | char procfs_dir[PATH_MAX]; |
61bb466e | 360 | |
609c3040 AR |
361 | snprintf (procfs_dir, sizeof (procfs_dir), "%s%s", |
362 | (nodestr != NULL) ? nodestr : "", "/proc"); | |
363 | ||
364 | dp = opendir (procfs_dir); | |
61bb466e KW |
365 | if (dp == NULL) |
366 | { | |
dc5dd1eb | 367 | fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)", |
609c3040 | 368 | procfs_dir, errno, safe_strerror (errno)); |
61bb466e KW |
369 | return; |
370 | } | |
371 | ||
9fe4a216 TT |
372 | cleanups = make_cleanup (do_closedir_cleanup, dp); |
373 | ||
61bb466e KW |
374 | /* Start scan at first pid. */ |
375 | rewinddir (dp); | |
376 | ||
377 | do | |
378 | { | |
379 | /* Get the right pid and procfs path for the pid. */ | |
380 | do | |
381 | { | |
382 | dirp = readdir (dp); | |
383 | if (dirp == NULL) | |
384 | { | |
9fe4a216 | 385 | do_cleanups (cleanups); |
61bb466e KW |
386 | return; |
387 | } | |
609c3040 AR |
388 | snprintf (buf, sizeof (buf), "%s%s/%s/as", |
389 | (nodestr != NULL) ? nodestr : "", | |
390 | "/proc", dirp->d_name); | |
61bb466e KW |
391 | pid = atoi (dirp->d_name); |
392 | } | |
393 | while (pid == 0); | |
394 | ||
0df8b418 | 395 | /* Open the procfs path. */ |
5dc1a704 TT |
396 | scoped_fd fd (open (buf, O_RDONLY)); |
397 | if (fd.get () == -1) | |
61bb466e | 398 | { |
dc5dd1eb | 399 | fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n", |
d737fd7f | 400 | buf, errno, safe_strerror (errno)); |
609c3040 | 401 | continue; |
61bb466e KW |
402 | } |
403 | ||
404 | pidinfo = (procfs_info *) buf; | |
5dc1a704 | 405 | if (devctl (fd.get (), DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK) |
61bb466e | 406 | { |
dc5dd1eb | 407 | fprintf_unfiltered (gdb_stderr, |
d737fd7f KW |
408 | "devctl DCMD_PROC_INFO failed - %d (%s)\n", |
409 | errno, safe_strerror (errno)); | |
61bb466e KW |
410 | break; |
411 | } | |
412 | num_threads = pidinfo->num_threads; | |
413 | ||
414 | info = (procfs_debuginfo *) buf; | |
5dc1a704 TT |
415 | if (devctl (fd.get (), DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0) |
416 | != EOK) | |
61bb466e KW |
417 | strcpy (name, "unavailable"); |
418 | else | |
419 | strcpy (name, info->path); | |
420 | ||
421 | /* Collect state info on all the threads. */ | |
422 | status = (procfs_status *) buf; | |
423 | for (status->tid = 1; status->tid <= num_threads; status->tid++) | |
424 | { | |
609c3040 | 425 | const int err |
5dc1a704 | 426 | = devctl (fd.get (), DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0); |
609c3040 AR |
427 | printf_filtered ("%s - %d", name, pid); |
428 | if (err == EOK && status->tid != 0) | |
429 | printf_filtered ("/%d\n", status->tid); | |
430 | else | |
431 | { | |
432 | printf_filtered ("\n"); | |
433 | break; | |
434 | } | |
61bb466e | 435 | } |
61bb466e KW |
436 | } |
437 | while (dirp != NULL); | |
438 | ||
9fe4a216 | 439 | do_cleanups (cleanups); |
61bb466e KW |
440 | return; |
441 | } | |
442 | ||
774ee6d2 | 443 | static void |
1d12d88f | 444 | procfs_meminfo (const char *args, int from_tty) |
61bb466e KW |
445 | { |
446 | procfs_mapinfo *mapinfos = NULL; | |
447 | static int num_mapinfos = 0; | |
448 | procfs_mapinfo *mapinfo_p, *mapinfo_p2; | |
449 | int flags = ~0, err, num, i, j; | |
450 | ||
451 | struct | |
452 | { | |
453 | procfs_debuginfo info; | |
454 | char buff[_POSIX_PATH_MAX]; | |
455 | } map; | |
456 | ||
457 | struct info | |
458 | { | |
459 | unsigned addr; | |
460 | unsigned size; | |
461 | unsigned flags; | |
462 | unsigned debug_vaddr; | |
463 | unsigned long long offset; | |
464 | }; | |
465 | ||
466 | struct printinfo | |
467 | { | |
468 | unsigned long long ino; | |
469 | unsigned dev; | |
470 | struct info text; | |
471 | struct info data; | |
472 | char name[256]; | |
473 | } printme; | |
474 | ||
475 | /* Get the number of map entrys. */ | |
476 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num); | |
477 | if (err != EOK) | |
478 | { | |
d737fd7f KW |
479 | printf ("failed devctl num mapinfos - %d (%s)\n", err, |
480 | safe_strerror (err)); | |
61bb466e KW |
481 | return; |
482 | } | |
483 | ||
774ee6d2 | 484 | mapinfos = XNEWVEC (procfs_mapinfo, num); |
61bb466e KW |
485 | |
486 | num_mapinfos = num; | |
487 | mapinfo_p = mapinfos; | |
488 | ||
489 | /* Fill the map entrys. */ | |
490 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, mapinfo_p, num | |
491 | * sizeof (procfs_mapinfo), &num); | |
492 | if (err != EOK) | |
493 | { | |
5483d879 | 494 | printf ("failed devctl mapinfos - %d (%s)\n", err, safe_strerror (err)); |
61bb466e KW |
495 | xfree (mapinfos); |
496 | return; | |
497 | } | |
498 | ||
325fac50 | 499 | num = std::min (num, num_mapinfos); |
61bb466e KW |
500 | |
501 | /* Run through the list of mapinfos, and store the data and text info | |
502 | so we can print it at the bottom of the loop. */ | |
503 | for (mapinfo_p = mapinfos, i = 0; i < num; i++, mapinfo_p++) | |
504 | { | |
505 | if (!(mapinfo_p->flags & flags)) | |
506 | mapinfo_p->ino = 0; | |
507 | ||
508 | if (mapinfo_p->ino == 0) /* Already visited. */ | |
509 | continue; | |
510 | ||
511 | map.info.vaddr = mapinfo_p->vaddr; | |
512 | ||
513 | err = devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
514 | if (err != EOK) | |
515 | continue; | |
516 | ||
517 | memset (&printme, 0, sizeof printme); | |
518 | printme.dev = mapinfo_p->dev; | |
519 | printme.ino = mapinfo_p->ino; | |
520 | printme.text.addr = mapinfo_p->vaddr; | |
521 | printme.text.size = mapinfo_p->size; | |
522 | printme.text.flags = mapinfo_p->flags; | |
523 | printme.text.offset = mapinfo_p->offset; | |
524 | printme.text.debug_vaddr = map.info.vaddr; | |
525 | strcpy (printme.name, map.info.path); | |
526 | ||
527 | /* Check for matching data. */ | |
528 | for (mapinfo_p2 = mapinfos, j = 0; j < num; j++, mapinfo_p2++) | |
529 | { | |
530 | if (mapinfo_p2->vaddr != mapinfo_p->vaddr | |
531 | && mapinfo_p2->ino == mapinfo_p->ino | |
532 | && mapinfo_p2->dev == mapinfo_p->dev) | |
533 | { | |
534 | map.info.vaddr = mapinfo_p2->vaddr; | |
535 | err = | |
536 | devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
537 | if (err != EOK) | |
538 | continue; | |
539 | ||
540 | if (strcmp (map.info.path, printme.name)) | |
541 | continue; | |
542 | ||
543 | /* Lower debug_vaddr is always text, if nessessary, swap. */ | |
544 | if ((int) map.info.vaddr < (int) printme.text.debug_vaddr) | |
545 | { | |
546 | memcpy (&(printme.data), &(printme.text), | |
547 | sizeof (printme.data)); | |
548 | printme.text.addr = mapinfo_p2->vaddr; | |
549 | printme.text.size = mapinfo_p2->size; | |
550 | printme.text.flags = mapinfo_p2->flags; | |
551 | printme.text.offset = mapinfo_p2->offset; | |
552 | printme.text.debug_vaddr = map.info.vaddr; | |
553 | } | |
554 | else | |
555 | { | |
556 | printme.data.addr = mapinfo_p2->vaddr; | |
557 | printme.data.size = mapinfo_p2->size; | |
558 | printme.data.flags = mapinfo_p2->flags; | |
559 | printme.data.offset = mapinfo_p2->offset; | |
560 | printme.data.debug_vaddr = map.info.vaddr; | |
561 | } | |
562 | mapinfo_p2->ino = 0; | |
563 | } | |
564 | } | |
565 | mapinfo_p->ino = 0; | |
566 | ||
567 | printf_filtered ("%s\n", printme.name); | |
568 | printf_filtered ("\ttext=%08x bytes @ 0x%08x\n", printme.text.size, | |
569 | printme.text.addr); | |
570 | printf_filtered ("\t\tflags=%08x\n", printme.text.flags); | |
571 | printf_filtered ("\t\tdebug=%08x\n", printme.text.debug_vaddr); | |
2244ba2e | 572 | printf_filtered ("\t\toffset=%s\n", phex (printme.text.offset, 8)); |
61bb466e KW |
573 | if (printme.data.size) |
574 | { | |
575 | printf_filtered ("\tdata=%08x bytes @ 0x%08x\n", printme.data.size, | |
576 | printme.data.addr); | |
577 | printf_filtered ("\t\tflags=%08x\n", printme.data.flags); | |
578 | printf_filtered ("\t\tdebug=%08x\n", printme.data.debug_vaddr); | |
2244ba2e | 579 | printf_filtered ("\t\toffset=%s\n", phex (printme.data.offset, 8)); |
61bb466e KW |
580 | } |
581 | printf_filtered ("\tdev=0x%x\n", printme.dev); | |
582 | printf_filtered ("\tino=0x%x\n", (unsigned int) printme.ino); | |
583 | } | |
584 | xfree (mapinfos); | |
585 | return; | |
586 | } | |
587 | ||
588 | /* Print status information about what we're accessing. */ | |
589 | static void | |
590 | procfs_files_info (struct target_ops *ignore) | |
591 | { | |
181e7f93 PA |
592 | struct inferior *inf = current_inferior (); |
593 | ||
61bb466e | 594 | printf_unfiltered ("\tUsing the running image of %s %s via %s.\n", |
3fdfcbf1 | 595 | inf->attach_flag ? "attached" : "child", |
609c3040 AR |
596 | target_pid_to_str (inferior_ptid), |
597 | (nodestr != NULL) ? nodestr : "local node"); | |
61bb466e KW |
598 | } |
599 | ||
e5343fde AR |
600 | /* Target to_pid_to_exec_file implementation. */ |
601 | ||
602 | static char * | |
603 | procfs_pid_to_exec_file (struct target_ops *ops, const int pid) | |
604 | { | |
605 | int proc_fd; | |
606 | static char proc_path[PATH_MAX]; | |
607 | ssize_t rd; | |
608 | ||
609 | /* Read exe file name. */ | |
610 | snprintf (proc_path, sizeof (proc_path), "%s/proc/%d/exefile", | |
611 | (nodestr != NULL) ? nodestr : "", pid); | |
612 | proc_fd = open (proc_path, O_RDONLY); | |
613 | if (proc_fd == -1) | |
614 | return NULL; | |
615 | ||
616 | rd = read (proc_fd, proc_path, sizeof (proc_path) - 1); | |
617 | close (proc_fd); | |
618 | if (rd <= 0) | |
619 | { | |
620 | proc_path[0] = '\0'; | |
621 | return NULL; | |
622 | } | |
623 | proc_path[rd] = '\0'; | |
624 | return proc_path; | |
625 | } | |
626 | ||
61bb466e KW |
627 | /* Attach to process PID, then initialize for debugging it. */ |
628 | static void | |
c0939df1 | 629 | procfs_attach (struct target_ops *ops, const char *args, int from_tty) |
61bb466e KW |
630 | { |
631 | char *exec_file; | |
632 | int pid; | |
181e7f93 | 633 | struct inferior *inf; |
61bb466e | 634 | |
74164c56 | 635 | pid = parse_pid_to_attach (args); |
61bb466e KW |
636 | |
637 | if (pid == getpid ()) | |
8a3fe4f8 | 638 | error (_("Attaching GDB to itself is not a good idea...")); |
61bb466e KW |
639 | |
640 | if (from_tty) | |
641 | { | |
642 | exec_file = (char *) get_exec_file (0); | |
643 | ||
644 | if (exec_file) | |
645 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
646 | target_pid_to_str (pid_to_ptid (pid))); | |
647 | else | |
648 | printf_unfiltered ("Attaching to %s\n", | |
649 | target_pid_to_str (pid_to_ptid (pid))); | |
650 | ||
651 | gdb_flush (gdb_stdout); | |
652 | } | |
653 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
6c95b8df PA |
654 | inf = current_inferior (); |
655 | inferior_appeared (inf, pid); | |
181e7f93 | 656 | inf->attach_flag = 1; |
7f9f62ba | 657 | |
6a3cb8e8 PA |
658 | if (!target_is_pushed (ops)) |
659 | push_target (ops); | |
7f9f62ba | 660 | |
e8032dde | 661 | procfs_update_thread_list (ops); |
61bb466e KW |
662 | } |
663 | ||
664 | static void | |
f045800c | 665 | procfs_post_attach (struct target_ops *self, pid_t pid) |
61bb466e | 666 | { |
61bb466e | 667 | if (exec_bfd) |
268a4a75 | 668 | solib_create_inferior_hook (0); |
61bb466e KW |
669 | } |
670 | ||
671 | static ptid_t | |
672 | do_attach (ptid_t ptid) | |
673 | { | |
674 | procfs_status status; | |
675 | struct sigevent event; | |
dc5dd1eb | 676 | char path[PATH_MAX]; |
61bb466e | 677 | |
609c3040 AR |
678 | snprintf (path, PATH_MAX - 1, "%s%s/%d/as", |
679 | (nodestr != NULL) ? nodestr : "", "/proc", ptid_get_pid (ptid)); | |
61bb466e KW |
680 | ctl_fd = open (path, O_RDWR); |
681 | if (ctl_fd == -1) | |
8a3fe4f8 | 682 | error (_("Couldn't open proc file %s, error %d (%s)"), path, errno, |
dc5dd1eb | 683 | safe_strerror (errno)); |
61bb466e | 684 | if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK) |
8a3fe4f8 | 685 | error (_("Couldn't stop process")); |
61bb466e KW |
686 | |
687 | /* Define a sigevent for process stopped notification. */ | |
688 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
689 | event.sigev_signo = SIGUSR1; | |
690 | event.sigev_code = 0; | |
691 | event.sigev_value.sival_ptr = NULL; | |
692 | event.sigev_priority = -1; | |
693 | devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0); | |
694 | ||
695 | if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK | |
696 | && status.flags & _DEBUG_FLAG_STOPPED) | |
dfd4cc63 | 697 | SignalKill (nto_node (), ptid_get_pid (ptid), 0, SIGCONT, 0, 0); |
61bb466e | 698 | nto_init_solib_absolute_prefix (); |
dfd4cc63 | 699 | return ptid_build (ptid_get_pid (ptid), 0, status.tid); |
61bb466e KW |
700 | } |
701 | ||
702 | /* Ask the user what to do when an interrupt is received. */ | |
703 | static void | |
dc5dd1eb | 704 | interrupt_query (void) |
61bb466e | 705 | { |
9e2f0ad4 HZ |
706 | if (query (_("Interrupted while waiting for the program.\n\ |
707 | Give up (and stop debugging it)? "))) | |
61bb466e | 708 | { |
bc1e6c81 | 709 | target_mourn_inferior (inferior_ptid); |
039e3c22 | 710 | quit (); |
61bb466e | 711 | } |
61bb466e KW |
712 | } |
713 | ||
714 | /* The user typed ^C twice. */ | |
715 | static void | |
bfedc46a | 716 | nto_handle_sigint_twice (int signo) |
61bb466e KW |
717 | { |
718 | signal (signo, ofunc); | |
719 | interrupt_query (); | |
bfedc46a | 720 | signal (signo, nto_handle_sigint_twice); |
61bb466e KW |
721 | } |
722 | ||
723 | static void | |
bfedc46a | 724 | nto_handle_sigint (int signo) |
61bb466e KW |
725 | { |
726 | /* If this doesn't work, try more severe steps. */ | |
bfedc46a | 727 | signal (signo, nto_handle_sigint_twice); |
61bb466e | 728 | |
e671cd59 | 729 | target_interrupt (); |
61bb466e KW |
730 | } |
731 | ||
732 | static ptid_t | |
117de6a9 | 733 | procfs_wait (struct target_ops *ops, |
47608cb1 | 734 | ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
61bb466e KW |
735 | { |
736 | sigset_t set; | |
737 | siginfo_t info; | |
738 | procfs_status status; | |
739 | static int exit_signo = 0; /* To track signals that cause termination. */ | |
740 | ||
741 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
742 | ||
743 | if (ptid_equal (inferior_ptid, null_ptid)) | |
744 | { | |
745 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 746 | ourstatus->value.sig = GDB_SIGNAL_0; |
61bb466e KW |
747 | exit_signo = 0; |
748 | return null_ptid; | |
749 | } | |
750 | ||
751 | sigemptyset (&set); | |
752 | sigaddset (&set, SIGUSR1); | |
753 | ||
754 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
755 | while (!(status.flags & _DEBUG_FLAG_ISTOP)) | |
756 | { | |
a40805d4 | 757 | ofunc = signal (SIGINT, nto_handle_sigint); |
61bb466e KW |
758 | sigwaitinfo (&set, &info); |
759 | signal (SIGINT, ofunc); | |
760 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
761 | } | |
762 | ||
a9889169 AR |
763 | nto_inferior_data (NULL)->stopped_flags = status.flags; |
764 | nto_inferior_data (NULL)->stopped_pc = status.ip; | |
765 | ||
61bb466e KW |
766 | if (status.flags & _DEBUG_FLAG_SSTEP) |
767 | { | |
768 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 769 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
770 | } |
771 | /* Was it a breakpoint? */ | |
772 | else if (status.flags & _DEBUG_FLAG_TRACE) | |
773 | { | |
774 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 775 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
776 | } |
777 | else if (status.flags & _DEBUG_FLAG_ISTOP) | |
778 | { | |
779 | switch (status.why) | |
780 | { | |
781 | case _DEBUG_WHY_SIGNALLED: | |
782 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
783 | ourstatus->value.sig = | |
2ea28649 | 784 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
785 | exit_signo = 0; |
786 | break; | |
787 | case _DEBUG_WHY_FAULTED: | |
788 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
789 | if (status.info.si_signo == SIGTRAP) | |
790 | { | |
791 | ourstatus->value.sig = 0; | |
792 | exit_signo = 0; | |
793 | } | |
794 | else | |
795 | { | |
796 | ourstatus->value.sig = | |
2ea28649 | 797 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
798 | exit_signo = ourstatus->value.sig; |
799 | } | |
800 | break; | |
801 | ||
802 | case _DEBUG_WHY_TERMINATED: | |
803 | { | |
804 | int waitval = 0; | |
805 | ||
dfd4cc63 | 806 | waitpid (ptid_get_pid (inferior_ptid), &waitval, WNOHANG); |
61bb466e KW |
807 | if (exit_signo) |
808 | { | |
809 | /* Abnormal death. */ | |
810 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
811 | ourstatus->value.sig = exit_signo; | |
812 | } | |
813 | else | |
814 | { | |
815 | /* Normal death. */ | |
816 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
817 | ourstatus->value.integer = WEXITSTATUS (waitval); | |
818 | } | |
819 | exit_signo = 0; | |
820 | break; | |
821 | } | |
822 | ||
823 | case _DEBUG_WHY_REQUESTED: | |
824 | /* We are assuming a requested stop is due to a SIGINT. */ | |
825 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 826 | ourstatus->value.sig = GDB_SIGNAL_INT; |
61bb466e KW |
827 | exit_signo = 0; |
828 | break; | |
829 | } | |
830 | } | |
831 | ||
a6a7f2a5 | 832 | return ptid_build (status.pid, 0, status.tid); |
61bb466e KW |
833 | } |
834 | ||
835 | /* Read the current values of the inferior's registers, both the | |
836 | general register set and floating point registers (if supported) | |
837 | and update gdb's idea of their current values. */ | |
838 | static void | |
28439f5e PA |
839 | procfs_fetch_registers (struct target_ops *ops, |
840 | struct regcache *regcache, int regno) | |
61bb466e KW |
841 | { |
842 | union | |
843 | { | |
844 | procfs_greg greg; | |
845 | procfs_fpreg fpreg; | |
846 | procfs_altreg altreg; | |
847 | } | |
848 | reg; | |
849 | int regsize; | |
850 | ||
bcc0c096 | 851 | procfs_set_thread (regcache_get_ptid (regcache)); |
61bb466e | 852 | if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK) |
56be3814 | 853 | nto_supply_gregset (regcache, (char *) ®.greg); |
61bb466e KW |
854 | if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size) |
855 | == EOK) | |
56be3814 | 856 | nto_supply_fpregset (regcache, (char *) ®.fpreg); |
61bb466e KW |
857 | if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size) |
858 | == EOK) | |
56be3814 | 859 | nto_supply_altregset (regcache, (char *) ®.altreg); |
61bb466e KW |
860 | } |
861 | ||
9d46c4e5 PA |
862 | /* Helper for procfs_xfer_partial that handles memory transfers. |
863 | Arguments are like target_xfer_partial. */ | |
61bb466e | 864 | |
9d46c4e5 PA |
865 | static enum target_xfer_status |
866 | procfs_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, | |
867 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
61bb466e | 868 | { |
9d46c4e5 PA |
869 | int nbytes; |
870 | ||
871 | if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) != (off_t) memaddr) | |
872 | return TARGET_XFER_E_IO; | |
873 | ||
874 | if (writebuf != NULL) | |
875 | nbytes = write (ctl_fd, writebuf, len); | |
876 | else | |
877 | nbytes = read (ctl_fd, readbuf, len); | |
878 | if (nbytes <= 0) | |
879 | return TARGET_XFER_E_IO; | |
880 | *xfered_len = nbytes; | |
881 | return TARGET_XFER_OK; | |
882 | } | |
883 | ||
884 | /* Target to_xfer_partial implementation. */ | |
61bb466e | 885 | |
9d46c4e5 PA |
886 | static enum target_xfer_status |
887 | procfs_xfer_partial (struct target_ops *ops, enum target_object object, | |
888 | const char *annex, gdb_byte *readbuf, | |
889 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
890 | ULONGEST *xfered_len) | |
891 | { | |
892 | switch (object) | |
61bb466e | 893 | { |
9d46c4e5 PA |
894 | case TARGET_OBJECT_MEMORY: |
895 | return procfs_xfer_memory (readbuf, writebuf, offset, len, xfered_len); | |
8a6c0ccd AR |
896 | case TARGET_OBJECT_AUXV: |
897 | if (readbuf != NULL) | |
898 | { | |
899 | int err; | |
900 | CORE_ADDR initial_stack; | |
901 | debug_process_t procinfo; | |
902 | /* For 32-bit architecture, size of auxv_t is 8 bytes. */ | |
903 | const unsigned int sizeof_auxv_t = sizeof (auxv_t); | |
904 | const unsigned int sizeof_tempbuf = 20 * sizeof_auxv_t; | |
905 | int tempread; | |
906 | gdb_byte *const tempbuf = alloca (sizeof_tempbuf); | |
907 | ||
908 | if (tempbuf == NULL) | |
909 | return TARGET_XFER_E_IO; | |
910 | ||
911 | err = devctl (ctl_fd, DCMD_PROC_INFO, &procinfo, | |
912 | sizeof procinfo, 0); | |
913 | if (err != EOK) | |
914 | return TARGET_XFER_E_IO; | |
915 | ||
916 | initial_stack = procinfo.initial_stack; | |
917 | ||
918 | /* procfs is always 'self-hosted', no byte-order manipulation. */ | |
919 | tempread = nto_read_auxv_from_initial_stack (initial_stack, tempbuf, | |
920 | sizeof_tempbuf, | |
921 | sizeof (auxv_t)); | |
325fac50 | 922 | tempread = std::min (tempread, len) - offset; |
8a6c0ccd AR |
923 | memcpy (readbuf, tempbuf + offset, tempread); |
924 | *xfered_len = tempread; | |
925 | return tempread ? TARGET_XFER_OK : TARGET_XFER_EOF; | |
926 | } | |
927 | /* Fallthru */ | |
9d46c4e5 PA |
928 | default: |
929 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
774ee6d2 AR |
930 | readbuf, writebuf, offset, len, |
931 | xfered_len); | |
61bb466e | 932 | } |
61bb466e KW |
933 | } |
934 | ||
935 | /* Take a program previously attached to and detaches it. | |
936 | The program resumes execution and will no longer stop | |
937 | on signals, etc. We'd better not have left any breakpoints | |
938 | in the program or it'll die when it hits one. */ | |
939 | static void | |
6e1e1966 | 940 | procfs_detach (struct target_ops *ops, inferior *inf, int from_tty) |
61bb466e | 941 | { |
7f9f62ba | 942 | int pid; |
61bb466e | 943 | |
0f48b757 PA |
944 | target_announce_detach (); |
945 | ||
61bb466e | 946 | if (siggnal) |
6bd6f3b6 | 947 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, 0, 0, 0); |
61bb466e KW |
948 | |
949 | close (ctl_fd); | |
950 | ctl_fd = -1; | |
7f9f62ba PA |
951 | |
952 | pid = ptid_get_pid (inferior_ptid); | |
61bb466e | 953 | inferior_ptid = null_ptid; |
7f9f62ba PA |
954 | detach_inferior (pid); |
955 | init_thread_list (); | |
6a3cb8e8 | 956 | inf_child_maybe_unpush_target (ops); |
61bb466e KW |
957 | } |
958 | ||
959 | static int | |
960 | procfs_breakpoint (CORE_ADDR addr, int type, int size) | |
961 | { | |
962 | procfs_break brk; | |
963 | ||
964 | brk.type = type; | |
965 | brk.addr = addr; | |
966 | brk.size = size; | |
967 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
968 | if (errno != EOK) | |
969 | return 1; | |
970 | return 0; | |
971 | } | |
972 | ||
973 | static int | |
3db08215 | 974 | procfs_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 975 | struct bp_target_info *bp_tgt) |
61bb466e | 976 | { |
0d5ed153 | 977 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f | 978 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, 0); |
61bb466e KW |
979 | } |
980 | ||
981 | static int | |
3db08215 | 982 | procfs_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
73971819 PA |
983 | struct bp_target_info *bp_tgt, |
984 | enum remove_bp_reason reason) | |
61bb466e | 985 | { |
8181d85f | 986 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, -1); |
61bb466e KW |
987 | } |
988 | ||
989 | static int | |
23a26771 | 990 | procfs_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 991 | struct bp_target_info *bp_tgt) |
61bb466e | 992 | { |
0d5ed153 | 993 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f DJ |
994 | return procfs_breakpoint (bp_tgt->placed_address, |
995 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0); | |
61bb466e KW |
996 | } |
997 | ||
998 | static int | |
8476dc92 TT |
999 | procfs_remove_hw_breakpoint (struct target_ops *self, |
1000 | struct gdbarch *gdbarch, | |
a6d9a66e | 1001 | struct bp_target_info *bp_tgt) |
61bb466e | 1002 | { |
8181d85f DJ |
1003 | return procfs_breakpoint (bp_tgt->placed_address, |
1004 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1); | |
61bb466e KW |
1005 | } |
1006 | ||
1007 | static void | |
28439f5e | 1008 | procfs_resume (struct target_ops *ops, |
2ea28649 | 1009 | ptid_t ptid, int step, enum gdb_signal signo) |
61bb466e KW |
1010 | { |
1011 | int signal_to_pass; | |
1012 | procfs_status status; | |
14ef7606 | 1013 | sigset_t *run_fault = (sigset_t *) (void *) &run.fault; |
61bb466e KW |
1014 | |
1015 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1016 | return; | |
1017 | ||
1018 | procfs_set_thread (ptid_equal (ptid, minus_one_ptid) ? inferior_ptid : | |
1019 | ptid); | |
1020 | ||
1021 | run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE; | |
1022 | if (step) | |
1023 | run.flags |= _DEBUG_RUN_STEP; | |
1024 | ||
14ef7606 AR |
1025 | sigemptyset (run_fault); |
1026 | sigaddset (run_fault, FLTBPT); | |
1027 | sigaddset (run_fault, FLTTRACE); | |
1028 | sigaddset (run_fault, FLTILL); | |
1029 | sigaddset (run_fault, FLTPRIV); | |
1030 | sigaddset (run_fault, FLTBOUNDS); | |
1031 | sigaddset (run_fault, FLTIOVF); | |
1032 | sigaddset (run_fault, FLTIZDIV); | |
1033 | sigaddset (run_fault, FLTFPE); | |
61bb466e | 1034 | /* Peter V will be changing this at some point. */ |
14ef7606 | 1035 | sigaddset (run_fault, FLTPAGE); |
61bb466e KW |
1036 | |
1037 | run.flags |= _DEBUG_RUN_ARM; | |
1038 | ||
2ea28649 | 1039 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
1040 | |
1041 | if (signal_to_pass) | |
1042 | { | |
1043 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
2ea28649 | 1044 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
1045 | if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED)) |
1046 | { | |
1047 | if (signal_to_pass != status.info.si_signo) | |
1048 | { | |
dfd4cc63 | 1049 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, |
d737fd7f | 1050 | signal_to_pass, 0, 0); |
61bb466e KW |
1051 | run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG; |
1052 | } | |
0df8b418 | 1053 | else /* Let it kill the program without telling us. */ |
61bb466e KW |
1054 | sigdelset (&run.trace, signal_to_pass); |
1055 | } | |
1056 | } | |
1057 | else | |
1058 | run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT; | |
1059 | ||
1060 | errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0); | |
1061 | if (errno != EOK) | |
1062 | { | |
9b20d036 | 1063 | perror (_("run error!\n")); |
61bb466e KW |
1064 | return; |
1065 | } | |
1066 | } | |
1067 | ||
1068 | static void | |
136d6dae | 1069 | procfs_mourn_inferior (struct target_ops *ops) |
61bb466e KW |
1070 | { |
1071 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
1072 | { | |
dfd4cc63 | 1073 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, SIGKILL, 0, 0); |
61bb466e KW |
1074 | close (ctl_fd); |
1075 | } | |
1076 | inferior_ptid = null_ptid; | |
1077 | init_thread_list (); | |
c1ee2fb3 | 1078 | inf_child_mourn_inferior (ops); |
61bb466e KW |
1079 | } |
1080 | ||
1081 | /* This function breaks up an argument string into an argument | |
1082 | vector suitable for passing to execvp(). | |
1083 | E.g., on "run a b c d" this routine would get as input | |
1084 | the string "a b c d", and as output it would fill in argv with | |
1085 | the four arguments "a", "b", "c", "d". The only additional | |
1086 | functionality is simple quoting. The gdb command: | |
1087 | run a "b c d" f | |
1088 | will fill in argv with the three args "a", "b c d", "e". */ | |
1089 | static void | |
1090 | breakup_args (char *scratch, char **argv) | |
1091 | { | |
1092 | char *pp, *cp = scratch; | |
1093 | char quoting = 0; | |
1094 | ||
1095 | for (;;) | |
1096 | { | |
1097 | /* Scan past leading separators. */ | |
1098 | quoting = 0; | |
1099 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') | |
1100 | cp++; | |
1101 | ||
1102 | /* Break if at end of string. */ | |
1103 | if (*cp == '\0') | |
1104 | break; | |
1105 | ||
1106 | /* Take an arg. */ | |
1107 | if (*cp == '"') | |
1108 | { | |
1109 | cp++; | |
1110 | quoting = strchr (cp, '"') ? 1 : 0; | |
1111 | } | |
1112 | ||
1113 | *argv++ = cp; | |
1114 | ||
1115 | /* Scan for next arg separator. */ | |
1116 | pp = cp; | |
1117 | if (quoting) | |
1118 | cp = strchr (pp, '"'); | |
1119 | if ((cp == NULL) || (!quoting)) | |
1120 | cp = strchr (pp, ' '); | |
1121 | if (cp == NULL) | |
1122 | cp = strchr (pp, '\t'); | |
1123 | if (cp == NULL) | |
1124 | cp = strchr (pp, '\n'); | |
1125 | ||
1126 | /* No separators => end of string => break. */ | |
1127 | if (cp == NULL) | |
1128 | { | |
1129 | pp = cp; | |
1130 | break; | |
1131 | } | |
1132 | ||
1133 | /* Replace the separator with a terminator. */ | |
1134 | *cp++ = '\0'; | |
1135 | } | |
1136 | ||
1137 | /* Execv requires a null-terminated arg vector. */ | |
1138 | *argv = NULL; | |
1139 | } | |
1140 | ||
1141 | static void | |
7c5ded6a SDJ |
1142 | procfs_create_inferior (struct target_ops *ops, const char *exec_file, |
1143 | const std::string &allargs, | |
1144 | char **env, int from_tty) | |
61bb466e KW |
1145 | { |
1146 | struct inheritance inherit; | |
1147 | pid_t pid; | |
1148 | int flags, errn; | |
1149 | char **argv, *args; | |
3cb3b8df | 1150 | const char *in = "", *out = "", *err = ""; |
61bb466e KW |
1151 | int fd, fds[3]; |
1152 | sigset_t set; | |
3cb3b8df | 1153 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
3fdfcbf1 | 1154 | struct inferior *inf; |
61bb466e | 1155 | |
7c5ded6a | 1156 | argv = xmalloc ((allargs.size () / (unsigned) 2 + 2) * |
61bb466e KW |
1157 | sizeof (*argv)); |
1158 | argv[0] = get_exec_file (1); | |
1159 | if (!argv[0]) | |
1160 | { | |
1161 | if (exec_file) | |
1162 | argv[0] = exec_file; | |
1163 | else | |
1164 | return; | |
1165 | } | |
1166 | ||
7c5ded6a | 1167 | args = xstrdup (allargs.c_str ()); |
609c3040 | 1168 | breakup_args (args, (exec_file != NULL) ? &argv[1] : &argv[0]); |
61bb466e KW |
1169 | |
1170 | argv = nto_parse_redirection (argv, &in, &out, &err); | |
1171 | ||
1172 | fds[0] = STDIN_FILENO; | |
1173 | fds[1] = STDOUT_FILENO; | |
1174 | fds[2] = STDERR_FILENO; | |
1175 | ||
1176 | /* If the user specified I/O via gdb's --tty= arg, use it, but only | |
1177 | if the i/o is not also being specified via redirection. */ | |
1178 | if (inferior_io_terminal) | |
1179 | { | |
1180 | if (!in[0]) | |
1181 | in = inferior_io_terminal; | |
1182 | if (!out[0]) | |
1183 | out = inferior_io_terminal; | |
1184 | if (!err[0]) | |
1185 | err = inferior_io_terminal; | |
1186 | } | |
1187 | ||
1188 | if (in[0]) | |
1189 | { | |
1190 | fd = open (in, O_RDONLY); | |
1191 | if (fd == -1) | |
1192 | perror (in); | |
1193 | else | |
1194 | fds[0] = fd; | |
1195 | } | |
1196 | if (out[0]) | |
1197 | { | |
1198 | fd = open (out, O_WRONLY); | |
1199 | if (fd == -1) | |
1200 | perror (out); | |
1201 | else | |
1202 | fds[1] = fd; | |
1203 | } | |
1204 | if (err[0]) | |
1205 | { | |
1206 | fd = open (err, O_WRONLY); | |
1207 | if (fd == -1) | |
1208 | perror (err); | |
1209 | else | |
1210 | fds[2] = fd; | |
1211 | } | |
1212 | ||
1213 | /* Clear any pending SIGUSR1's but keep the behavior the same. */ | |
1214 | signal (SIGUSR1, signal (SIGUSR1, SIG_IGN)); | |
1215 | ||
1216 | sigemptyset (&set); | |
1217 | sigaddset (&set, SIGUSR1); | |
1218 | sigprocmask (SIG_UNBLOCK, &set, NULL); | |
1219 | ||
1220 | memset (&inherit, 0, sizeof (inherit)); | |
1221 | ||
1222 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0) | |
1223 | { | |
d737fd7f | 1224 | inherit.nd = nto_node (); |
61bb466e KW |
1225 | inherit.flags |= SPAWN_SETND; |
1226 | inherit.flags &= ~SPAWN_EXEC; | |
1227 | } | |
1228 | inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD; | |
1229 | inherit.pgroup = SPAWN_NEWPGROUP; | |
1230 | pid = spawnp (argv[0], 3, fds, &inherit, argv, | |
1231 | ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0); | |
1232 | xfree (args); | |
1233 | ||
1234 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1235 | ||
1236 | if (pid == -1) | |
8a3fe4f8 | 1237 | error (_("Error spawning %s: %d (%s)"), argv[0], errno, |
d737fd7f | 1238 | safe_strerror (errno)); |
61bb466e KW |
1239 | |
1240 | if (fds[0] != STDIN_FILENO) | |
1241 | close (fds[0]); | |
1242 | if (fds[1] != STDOUT_FILENO) | |
1243 | close (fds[1]); | |
1244 | if (fds[2] != STDERR_FILENO) | |
1245 | close (fds[2]); | |
1246 | ||
1247 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
e8032dde | 1248 | procfs_update_thread_list (ops); |
61bb466e | 1249 | |
6c95b8df PA |
1250 | inf = current_inferior (); |
1251 | inferior_appeared (inf, pid); | |
3fdfcbf1 | 1252 | inf->attach_flag = 0; |
7f9f62ba | 1253 | |
61bb466e KW |
1254 | flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */ |
1255 | errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0); | |
1256 | if (errn != EOK) | |
1257 | { | |
1258 | /* FIXME: expected warning? */ | |
1259 | /* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n", | |
1260 | errn, strerror(errn) ); */ | |
1261 | } | |
6a3cb8e8 PA |
1262 | if (!target_is_pushed (ops)) |
1263 | push_target (ops); | |
223ffa71 | 1264 | target_terminal::init (); |
61bb466e | 1265 | |
61bb466e KW |
1266 | if (exec_bfd != NULL |
1267 | || (symfile_objfile != NULL && symfile_objfile->obfd != NULL)) | |
268a4a75 | 1268 | solib_create_inferior_hook (0); |
61bb466e KW |
1269 | } |
1270 | ||
1271 | static void | |
e671cd59 | 1272 | procfs_interrupt (struct target_ops *self) |
61bb466e KW |
1273 | { |
1274 | devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0); | |
1275 | } | |
1276 | ||
1277 | static void | |
7d85a9c0 | 1278 | procfs_kill_inferior (struct target_ops *ops) |
61bb466e | 1279 | { |
bc1e6c81 | 1280 | target_mourn_inferior (inferior_ptid); |
61bb466e KW |
1281 | } |
1282 | ||
61bb466e KW |
1283 | /* Fill buf with regset and return devctl cmd to do the setting. Return |
1284 | -1 if we fail to get the regset. Store size of regset in regsize. */ | |
1285 | static int | |
1286 | get_regset (int regset, char *buf, int bufsize, int *regsize) | |
1287 | { | |
1288 | int dev_get, dev_set; | |
1289 | switch (regset) | |
1290 | { | |
1291 | case NTO_REG_GENERAL: | |
1292 | dev_get = DCMD_PROC_GETGREG; | |
1293 | dev_set = DCMD_PROC_SETGREG; | |
1294 | break; | |
1295 | ||
1296 | case NTO_REG_FLOAT: | |
1297 | dev_get = DCMD_PROC_GETFPREG; | |
1298 | dev_set = DCMD_PROC_SETFPREG; | |
1299 | break; | |
1300 | ||
1301 | case NTO_REG_ALT: | |
1302 | dev_get = DCMD_PROC_GETALTREG; | |
1303 | dev_set = DCMD_PROC_SETALTREG; | |
1304 | break; | |
1305 | ||
1306 | case NTO_REG_SYSTEM: | |
1307 | default: | |
1308 | return -1; | |
1309 | } | |
97c44116 | 1310 | if (devctl (ctl_fd, dev_get, buf, bufsize, regsize) != EOK) |
61bb466e KW |
1311 | return -1; |
1312 | ||
1313 | return dev_set; | |
1314 | } | |
1315 | ||
774ee6d2 | 1316 | static void |
28439f5e PA |
1317 | procfs_store_registers (struct target_ops *ops, |
1318 | struct regcache *regcache, int regno) | |
61bb466e KW |
1319 | { |
1320 | union | |
1321 | { | |
1322 | procfs_greg greg; | |
1323 | procfs_fpreg fpreg; | |
1324 | procfs_altreg altreg; | |
1325 | } | |
1326 | reg; | |
1327 | unsigned off; | |
1328 | int len, regset, regsize, dev_set, err; | |
1329 | char *data; | |
bcc0c096 | 1330 | ptid_t ptid = regcache_get_ptid (regcache); |
61bb466e | 1331 | |
bcc0c096 | 1332 | if (ptid_equal (ptid, null_ptid)) |
61bb466e | 1333 | return; |
bcc0c096 | 1334 | procfs_set_thread (ptid); |
61bb466e KW |
1335 | |
1336 | if (regno == -1) | |
1337 | { | |
1338 | for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++) | |
1339 | { | |
1340 | dev_set = get_regset (regset, (char *) ®, | |
1341 | sizeof (reg), ®size); | |
1342 | if (dev_set == -1) | |
1343 | continue; | |
1344 | ||
56be3814 | 1345 | if (nto_regset_fill (regcache, regset, (char *) ®) == -1) |
61bb466e KW |
1346 | continue; |
1347 | ||
1348 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1349 | if (err != EOK) | |
1350 | fprintf_unfiltered (gdb_stderr, | |
1351 | "Warning unable to write regset %d: %s\n", | |
dc5dd1eb | 1352 | regno, safe_strerror (err)); |
61bb466e KW |
1353 | } |
1354 | } | |
1355 | else | |
1356 | { | |
1357 | regset = nto_regset_id (regno); | |
1358 | if (regset == -1) | |
1359 | return; | |
1360 | ||
1361 | dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size); | |
1362 | if (dev_set == -1) | |
1363 | return; | |
1364 | ||
ac7936df | 1365 | len = nto_register_area (regcache->arch (), |
60441ab9 | 1366 | regno, regset, &off); |
61bb466e KW |
1367 | |
1368 | if (len < 1) | |
1369 | return; | |
1370 | ||
56be3814 | 1371 | regcache_raw_collect (regcache, regno, (char *) ® + off); |
61bb466e KW |
1372 | |
1373 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1374 | if (err != EOK) | |
1375 | fprintf_unfiltered (gdb_stderr, | |
1376 | "Warning unable to write regset %d: %s\n", regno, | |
dc5dd1eb | 1377 | safe_strerror (err)); |
61bb466e KW |
1378 | } |
1379 | } | |
1380 | ||
2455069d UW |
1381 | /* Set list of signals to be handled in the target. */ |
1382 | ||
61bb466e | 1383 | static void |
94bedb42 TT |
1384 | procfs_pass_signals (struct target_ops *self, |
1385 | int numsigs, unsigned char *pass_signals) | |
61bb466e KW |
1386 | { |
1387 | int signo; | |
1388 | ||
2455069d UW |
1389 | sigfillset (&run.trace); |
1390 | ||
61bb466e KW |
1391 | for (signo = 1; signo < NSIG; signo++) |
1392 | { | |
2ea28649 | 1393 | int target_signo = gdb_signal_from_host (signo); |
2455069d UW |
1394 | if (target_signo < numsigs && pass_signals[target_signo]) |
1395 | sigdelset (&run.trace, signo); | |
61bb466e KW |
1396 | } |
1397 | } | |
1398 | ||
94c74239 | 1399 | static char * |
117de6a9 | 1400 | procfs_pid_to_str (struct target_ops *ops, ptid_t ptid) |
61bb466e KW |
1401 | { |
1402 | static char buf[1024]; | |
1403 | int pid, tid, n; | |
1404 | struct tidinfo *tip; | |
1405 | ||
1406 | pid = ptid_get_pid (ptid); | |
1407 | tid = ptid_get_tid (ptid); | |
1408 | ||
dc5dd1eb | 1409 | n = snprintf (buf, 1023, "process %d", pid); |
61bb466e KW |
1410 | |
1411 | #if 0 /* NYI */ | |
1412 | tip = procfs_thread_info (pid, tid); | |
1413 | if (tip != NULL) | |
dc5dd1eb | 1414 | snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state); |
61bb466e KW |
1415 | #endif |
1416 | ||
1417 | return buf; | |
1418 | } | |
1419 | ||
132f8e03 PA |
1420 | /* to_can_run implementation for "target procfs". Note this really |
1421 | means "can this target be the default run target", which there can | |
1422 | be only one, and we make it be "target native" like other ports. | |
1423 | "target procfs <node>" wouldn't make sense as default run target, as | |
1424 | it needs <node>. */ | |
ee8e9165 | 1425 | |
132f8e03 PA |
1426 | static int |
1427 | procfs_can_run (struct target_ops *self) | |
1428 | { | |
1429 | return 0; | |
1430 | } | |
1431 | ||
1432 | /* "target procfs". */ | |
1433 | static struct target_ops nto_procfs_ops; | |
1434 | ||
6a3cb8e8 PA |
1435 | /* "target native". */ |
1436 | static struct target_ops *nto_native_ops; | |
1437 | ||
1438 | /* to_open implementation for "target procfs". */ | |
1439 | ||
1440 | static void | |
014f9477 | 1441 | procfs_open (const char *arg, int from_tty) |
6a3cb8e8 PA |
1442 | { |
1443 | procfs_open_1 (&nto_procfs_ops, arg, from_tty); | |
1444 | } | |
1445 | ||
1446 | /* to_open implementation for "target native". */ | |
1447 | ||
1448 | static void | |
014f9477 | 1449 | procfs_native_open (const char *arg, int from_tty) |
6a3cb8e8 PA |
1450 | { |
1451 | procfs_open_1 (nto_native_ops, arg, from_tty); | |
1452 | } | |
1453 | ||
132f8e03 PA |
1454 | /* Create the "native" and "procfs" targets. */ |
1455 | ||
1456 | static void | |
1457 | init_procfs_targets (void) | |
61bb466e | 1458 | { |
ee8e9165 PA |
1459 | struct target_ops *t = inf_child_target (); |
1460 | ||
132f8e03 PA |
1461 | /* Leave to_shortname as "native". */ |
1462 | t->to_longname = "QNX Neutrino local process"; | |
1463 | t->to_doc = "QNX Neutrino local process (started by the \"run\" command)."; | |
6a3cb8e8 | 1464 | t->to_open = procfs_native_open; |
ee8e9165 PA |
1465 | t->to_attach = procfs_attach; |
1466 | t->to_post_attach = procfs_post_attach; | |
1467 | t->to_detach = procfs_detach; | |
1468 | t->to_resume = procfs_resume; | |
1469 | t->to_wait = procfs_wait; | |
1470 | t->to_fetch_registers = procfs_fetch_registers; | |
1471 | t->to_store_registers = procfs_store_registers; | |
1472 | t->to_xfer_partial = procfs_xfer_partial; | |
1473 | t->to_files_info = procfs_files_info; | |
1474 | t->to_insert_breakpoint = procfs_insert_breakpoint; | |
1475 | t->to_remove_breakpoint = procfs_remove_breakpoint; | |
1476 | t->to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint; | |
1477 | t->to_insert_hw_breakpoint = procfs_insert_hw_breakpoint; | |
1478 | t->to_remove_hw_breakpoint = procfs_remove_hw_breakpoint; | |
1479 | t->to_insert_watchpoint = procfs_insert_hw_watchpoint; | |
1480 | t->to_remove_watchpoint = procfs_remove_hw_watchpoint; | |
1481 | t->to_stopped_by_watchpoint = procfs_stopped_by_watchpoint; | |
1482 | t->to_kill = procfs_kill_inferior; | |
1483 | t->to_create_inferior = procfs_create_inferior; | |
1484 | t->to_mourn_inferior = procfs_mourn_inferior; | |
1485 | t->to_pass_signals = procfs_pass_signals; | |
1486 | t->to_thread_alive = procfs_thread_alive; | |
e8032dde | 1487 | t->to_update_thread_list = procfs_update_thread_list; |
ee8e9165 | 1488 | t->to_pid_to_str = procfs_pid_to_str; |
bfedc46a | 1489 | t->to_interrupt = procfs_interrupt; |
ee8e9165 PA |
1490 | t->to_have_continuable_watchpoint = 1; |
1491 | t->to_extra_thread_info = nto_extra_thread_info; | |
e5343fde | 1492 | t->to_pid_to_exec_file = procfs_pid_to_exec_file; |
ee8e9165 | 1493 | |
6a3cb8e8 PA |
1494 | nto_native_ops = t; |
1495 | ||
132f8e03 PA |
1496 | /* Register "target native". This is the default run target. */ |
1497 | add_target (t); | |
1498 | ||
1499 | /* Register "target procfs <node>". */ | |
1500 | nto_procfs_ops = *t; | |
1501 | nto_procfs_ops.to_shortname = "procfs"; | |
1502 | nto_procfs_ops.to_can_run = procfs_can_run; | |
1503 | t->to_longname = "QNX Neutrino local or remote process"; | |
1504 | t->to_doc = "QNX Neutrino process. target procfs <node>"; | |
6a3cb8e8 PA |
1505 | t->to_open = procfs_open; |
1506 | ||
132f8e03 | 1507 | add_target (&nto_procfs_ops); |
61bb466e KW |
1508 | } |
1509 | ||
1510 | #define OSTYPE_NTO 1 | |
1511 | ||
1512 | void | |
dc5dd1eb | 1513 | _initialize_procfs (void) |
61bb466e KW |
1514 | { |
1515 | sigset_t set; | |
1516 | ||
132f8e03 | 1517 | init_procfs_targets (); |
61bb466e KW |
1518 | |
1519 | /* We use SIGUSR1 to gain control after we block waiting for a process. | |
1520 | We use sigwaitevent to wait. */ | |
1521 | sigemptyset (&set); | |
1522 | sigaddset (&set, SIGUSR1); | |
1523 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1524 | ||
2455069d UW |
1525 | /* Initially, make sure all signals are reported. */ |
1526 | sigfillset (&run.trace); | |
61bb466e KW |
1527 | |
1528 | /* Stuff some information. */ | |
1529 | nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags; | |
1530 | nto_cpuinfo_valid = 1; | |
1531 | ||
1bedd215 AC |
1532 | add_info ("pidlist", procfs_pidlist, _("pidlist")); |
1533 | add_info ("meminfo", procfs_meminfo, _("memory information")); | |
d737fd7f KW |
1534 | |
1535 | nto_is_nto_target = procfs_is_nto_target; | |
61bb466e KW |
1536 | } |
1537 | ||
1538 | ||
1539 | static int | |
f486487f | 1540 | procfs_hw_watchpoint (int addr, int len, enum target_hw_bp_type type) |
61bb466e KW |
1541 | { |
1542 | procfs_break brk; | |
1543 | ||
1544 | switch (type) | |
1545 | { | |
f486487f | 1546 | case hw_read: |
61bb466e KW |
1547 | brk.type = _DEBUG_BREAK_RD; |
1548 | break; | |
f486487f | 1549 | case hw_access: |
61bb466e KW |
1550 | brk.type = _DEBUG_BREAK_RW; |
1551 | break; | |
1552 | default: /* Modify. */ | |
1553 | /* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */ | |
1554 | brk.type = _DEBUG_BREAK_RW; | |
1555 | } | |
1556 | brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */ | |
1557 | brk.addr = addr; | |
1558 | brk.size = len; | |
1559 | ||
1560 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1561 | if (errno != EOK) | |
1562 | { | |
9b20d036 | 1563 | perror (_("Failed to set hardware watchpoint")); |
61bb466e KW |
1564 | return -1; |
1565 | } | |
1566 | return 0; | |
1567 | } | |
1568 | ||
1569 | static int | |
5461485a | 1570 | procfs_can_use_hw_breakpoint (struct target_ops *self, |
f486487f SM |
1571 | enum bptype type, |
1572 | int cnt, int othertype) | |
61bb466e KW |
1573 | { |
1574 | return 1; | |
1575 | } | |
1576 | ||
1577 | static int | |
11b5219a | 1578 | procfs_remove_hw_watchpoint (struct target_ops *self, |
f486487f SM |
1579 | CORE_ADDR addr, int len, |
1580 | enum target_hw_bp_type type, | |
0cf6dd15 | 1581 | struct expression *cond) |
61bb466e KW |
1582 | { |
1583 | return procfs_hw_watchpoint (addr, -1, type); | |
1584 | } | |
1585 | ||
1586 | static int | |
7bb99c53 | 1587 | procfs_insert_hw_watchpoint (struct target_ops *self, |
f486487f SM |
1588 | CORE_ADDR addr, int len, |
1589 | enum target_hw_bp_type type, | |
0cf6dd15 | 1590 | struct expression *cond) |
61bb466e KW |
1591 | { |
1592 | return procfs_hw_watchpoint (addr, len, type); | |
1593 | } | |
1594 | ||
1595 | static int | |
6a109b6b | 1596 | procfs_stopped_by_watchpoint (struct target_ops *ops) |
61bb466e | 1597 | { |
a9889169 AR |
1598 | /* NOTE: nto_stopped_by_watchpoint will be called ONLY while we are |
1599 | stopped due to a SIGTRAP. This assumes gdb works in 'all-stop' mode; | |
1600 | future gdb versions will likely run in 'non-stop' mode in which case | |
1601 | we will have to store/examine statuses per thread in question. | |
1602 | Until then, this will work fine. */ | |
1603 | ||
1604 | struct inferior *inf = current_inferior (); | |
1605 | struct nto_inferior_data *inf_data; | |
1606 | ||
1607 | gdb_assert (inf != NULL); | |
1608 | ||
1609 | inf_data = nto_inferior_data (inf); | |
1610 | ||
1611 | return inf_data->stopped_flags | |
1612 | & (_DEBUG_FLAG_TRACE_RD | |
1613 | | _DEBUG_FLAG_TRACE_WR | |
1614 | | _DEBUG_FLAG_TRACE_MODIFY); | |
61bb466e | 1615 | } |