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61bb466e KW |
1 | /* Machine independent support for QNX Neutrino /proc (process file system) |
2 | for GDB. Written by Colin Burgess at QNX Software Systems Limited. | |
3 | ||
0fb0cc75 | 4 | Copyright (C) 2003, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
61bb466e KW |
5 | |
6 | Contributed by QNX Software Systems Ltd. | |
7 | ||
8 | This file is part of GDB. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
61bb466e KW |
13 | (at your option) any later version. |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
61bb466e KW |
22 | |
23 | #include "defs.h" | |
24 | ||
25 | #include <fcntl.h> | |
26 | #include <spawn.h> | |
27 | #include <sys/debug.h> | |
28 | #include <sys/procfs.h> | |
29 | #include <sys/neutrino.h> | |
30 | #include <sys/syspage.h> | |
5483d879 | 31 | #include "gdb_dirent.h" |
61bb466e KW |
32 | #include <sys/netmgr.h> |
33 | ||
60250e8b | 34 | #include "exceptions.h" |
61bb466e KW |
35 | #include "gdb_string.h" |
36 | #include "gdbcore.h" | |
37 | #include "inferior.h" | |
38 | #include "target.h" | |
39 | #include "objfiles.h" | |
40 | #include "gdbthread.h" | |
41 | #include "nto-tdep.h" | |
42 | #include "command.h" | |
43 | #include "regcache.h" | |
5ea03926 | 44 | #include "solib.h" |
61bb466e KW |
45 | |
46 | #define NULL_PID 0 | |
47 | #define _DEBUG_FLAG_TRACE (_DEBUG_FLAG_TRACE_EXEC|_DEBUG_FLAG_TRACE_RD|\ | |
48 | _DEBUG_FLAG_TRACE_WR|_DEBUG_FLAG_TRACE_MODIFY) | |
49 | ||
50 | static struct target_ops procfs_ops; | |
51 | ||
52 | int ctl_fd; | |
53 | ||
54 | static void (*ofunc) (); | |
55 | ||
56 | static procfs_run run; | |
57 | ||
58 | static void procfs_open (char *, int); | |
59 | ||
60 | static int procfs_can_run (void); | |
61 | ||
14ef7606 | 62 | static int procfs_xfer_memory (CORE_ADDR, gdb_byte *, int, int, |
61bb466e KW |
63 | struct mem_attrib *attrib, |
64 | struct target_ops *); | |
65 | ||
61bb466e KW |
66 | static void notice_signals (void); |
67 | ||
68 | static void init_procfs_ops (void); | |
69 | ||
70 | static ptid_t do_attach (ptid_t ptid); | |
71 | ||
72 | static int procfs_can_use_hw_breakpoint (int, int, int); | |
73 | ||
61bb466e KW |
74 | static int procfs_insert_hw_watchpoint (CORE_ADDR addr, int len, int type); |
75 | ||
76 | static int procfs_remove_hw_watchpoint (CORE_ADDR addr, int len, int type); | |
77 | ||
78 | static int procfs_stopped_by_watchpoint (void); | |
79 | ||
80 | /* These two globals are only ever set in procfs_open(), but are | |
81 | referenced elsewhere. 'nto_procfs_node' is a flag used to say | |
82 | whether we are local, or we should get the current node descriptor | |
83 | for the remote QNX node. */ | |
84 | static char nto_procfs_path[PATH_MAX] = { "/proc" }; | |
85 | static unsigned nto_procfs_node = ND_LOCAL_NODE; | |
86 | ||
87 | /* Return the current QNX Node, or error out. This is a simple | |
88 | wrapper for the netmgr_strtond() function. The reason this | |
89 | is required is because QNX node descriptors are transient so | |
90 | we have to re-acquire them every time. */ | |
91 | static unsigned | |
d737fd7f | 92 | nto_node (void) |
61bb466e KW |
93 | { |
94 | unsigned node; | |
95 | ||
d737fd7f | 96 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0) |
61bb466e KW |
97 | return ND_LOCAL_NODE; |
98 | ||
d737fd7f | 99 | node = netmgr_strtond (nto_procfs_path, 0); |
61bb466e | 100 | if (node == -1) |
8a3fe4f8 | 101 | error (_("Lost the QNX node. Debug session probably over.")); |
61bb466e KW |
102 | |
103 | return (node); | |
104 | } | |
105 | ||
d737fd7f KW |
106 | static enum gdb_osabi |
107 | procfs_is_nto_target (bfd *abfd) | |
108 | { | |
109 | return GDB_OSABI_QNXNTO; | |
110 | } | |
111 | ||
61bb466e KW |
112 | /* This is called when we call 'target procfs <arg>' from the (gdb) prompt. |
113 | For QNX6 (nto), the only valid arg will be a QNX node string, | |
114 | eg: "/net/some_node". If arg is not a valid QNX node, we will | |
115 | default to local. */ | |
116 | static void | |
117 | procfs_open (char *arg, int from_tty) | |
118 | { | |
119 | char *nodestr; | |
120 | char *endstr; | |
121 | char buffer[50]; | |
122 | int fd, total_size; | |
123 | procfs_sysinfo *sysinfo; | |
9fe4a216 | 124 | struct cleanup *cleanups; |
61bb466e | 125 | |
d737fd7f KW |
126 | nto_is_nto_target = procfs_is_nto_target; |
127 | ||
61bb466e KW |
128 | /* Set the default node used for spawning to this one, |
129 | and only override it if there is a valid arg. */ | |
130 | ||
131 | nto_procfs_node = ND_LOCAL_NODE; | |
132 | nodestr = arg ? xstrdup (arg) : arg; | |
133 | ||
134 | init_thread_list (); | |
135 | ||
136 | if (nodestr) | |
137 | { | |
138 | nto_procfs_node = netmgr_strtond (nodestr, &endstr); | |
139 | if (nto_procfs_node == -1) | |
140 | { | |
141 | if (errno == ENOTSUP) | |
142 | printf_filtered ("QNX Net Manager not found.\n"); | |
143 | printf_filtered ("Invalid QNX node %s: error %d (%s).\n", nodestr, | |
dc5dd1eb | 144 | errno, safe_strerror (errno)); |
61bb466e KW |
145 | xfree (nodestr); |
146 | nodestr = NULL; | |
147 | nto_procfs_node = ND_LOCAL_NODE; | |
148 | } | |
149 | else if (*endstr) | |
150 | { | |
151 | if (*(endstr - 1) == '/') | |
152 | *(endstr - 1) = 0; | |
153 | else | |
154 | *endstr = 0; | |
155 | } | |
156 | } | |
d737fd7f KW |
157 | snprintf (nto_procfs_path, PATH_MAX - 1, "%s%s", nodestr ? nodestr : "", |
158 | "/proc"); | |
61bb466e KW |
159 | if (nodestr) |
160 | xfree (nodestr); | |
161 | ||
162 | fd = open (nto_procfs_path, O_RDONLY); | |
163 | if (fd == -1) | |
164 | { | |
165 | printf_filtered ("Error opening %s : %d (%s)\n", nto_procfs_path, errno, | |
dc5dd1eb | 166 | safe_strerror (errno)); |
8a3fe4f8 | 167 | error (_("Invalid procfs arg")); |
61bb466e | 168 | } |
9fe4a216 | 169 | cleanups = make_cleanup_close (fd); |
61bb466e KW |
170 | |
171 | sysinfo = (void *) buffer; | |
172 | if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, sizeof buffer, 0) != EOK) | |
173 | { | |
174 | printf_filtered ("Error getting size: %d (%s)\n", errno, | |
dc5dd1eb | 175 | safe_strerror (errno)); |
8a3fe4f8 | 176 | error (_("Devctl failed.")); |
61bb466e KW |
177 | } |
178 | else | |
179 | { | |
180 | total_size = sysinfo->total_size; | |
181 | sysinfo = alloca (total_size); | |
182 | if (!sysinfo) | |
183 | { | |
184 | printf_filtered ("Memory error: %d (%s)\n", errno, | |
dc5dd1eb | 185 | safe_strerror (errno)); |
8a3fe4f8 | 186 | error (_("alloca failed.")); |
61bb466e KW |
187 | } |
188 | else | |
189 | { | |
190 | if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, total_size, 0) != EOK) | |
191 | { | |
192 | printf_filtered ("Error getting sysinfo: %d (%s)\n", errno, | |
dc5dd1eb | 193 | safe_strerror (errno)); |
8a3fe4f8 | 194 | error (_("Devctl failed.")); |
61bb466e KW |
195 | } |
196 | else | |
197 | { | |
198 | if (sysinfo->type != | |
1143fffb UW |
199 | nto_map_arch_to_cputype (gdbarch_bfd_arch_info |
200 | (current_gdbarch)->arch_name)) | |
9fe4a216 | 201 | error (_("Invalid target CPU.")); |
61bb466e KW |
202 | } |
203 | } | |
204 | } | |
9fe4a216 | 205 | do_cleanups (cleanups); |
61bb466e KW |
206 | printf_filtered ("Debugging using %s\n", nto_procfs_path); |
207 | } | |
208 | ||
209 | static void | |
210 | procfs_set_thread (ptid_t ptid) | |
211 | { | |
212 | pid_t tid; | |
213 | ||
214 | tid = ptid_get_tid (ptid); | |
215 | devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0); | |
216 | } | |
217 | ||
218 | /* Return nonzero if the thread TH is still alive. */ | |
219 | static int | |
28439f5e | 220 | procfs_thread_alive (struct target_ops *ops, ptid_t ptid) |
61bb466e KW |
221 | { |
222 | pid_t tid; | |
223 | ||
224 | tid = ptid_get_tid (ptid); | |
225 | if (devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0) == EOK) | |
226 | return 1; | |
227 | return 0; | |
228 | } | |
229 | ||
230 | void | |
28439f5e | 231 | procfs_find_new_threads (struct target_ops *ops) |
61bb466e KW |
232 | { |
233 | procfs_status status; | |
234 | pid_t pid; | |
235 | ptid_t ptid; | |
236 | ||
237 | if (ctl_fd == -1) | |
238 | return; | |
239 | ||
240 | pid = ptid_get_pid (inferior_ptid); | |
241 | ||
242 | for (status.tid = 1;; ++status.tid) | |
243 | { | |
244 | if (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0) | |
245 | != EOK && status.tid != 0) | |
246 | break; | |
247 | ptid = ptid_build (pid, 0, status.tid); | |
248 | if (!in_thread_list (ptid)) | |
249 | add_thread (ptid); | |
250 | } | |
251 | return; | |
252 | } | |
253 | ||
9fe4a216 TT |
254 | static void |
255 | do_closedir_cleanup (void *dir) | |
256 | { | |
257 | closedir (dir); | |
258 | } | |
259 | ||
61bb466e KW |
260 | void |
261 | procfs_pidlist (char *args, int from_tty) | |
262 | { | |
263 | DIR *dp = NULL; | |
264 | struct dirent *dirp = NULL; | |
61bb466e KW |
265 | char buf[512]; |
266 | procfs_info *pidinfo = NULL; | |
267 | procfs_debuginfo *info = NULL; | |
268 | procfs_status *status = NULL; | |
269 | pid_t num_threads = 0; | |
270 | pid_t pid; | |
271 | char name[512]; | |
9fe4a216 | 272 | struct cleanup *cleanups; |
61bb466e KW |
273 | |
274 | dp = opendir (nto_procfs_path); | |
275 | if (dp == NULL) | |
276 | { | |
dc5dd1eb | 277 | fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)", |
d737fd7f | 278 | nto_procfs_path, errno, safe_strerror (errno)); |
61bb466e KW |
279 | return; |
280 | } | |
281 | ||
9fe4a216 TT |
282 | cleanups = make_cleanup (do_closedir_cleanup, dp); |
283 | ||
61bb466e KW |
284 | /* Start scan at first pid. */ |
285 | rewinddir (dp); | |
286 | ||
287 | do | |
288 | { | |
9fe4a216 TT |
289 | int fd; |
290 | struct cleanup *inner_cleanup; | |
291 | ||
61bb466e KW |
292 | /* Get the right pid and procfs path for the pid. */ |
293 | do | |
294 | { | |
295 | dirp = readdir (dp); | |
296 | if (dirp == NULL) | |
297 | { | |
9fe4a216 | 298 | do_cleanups (cleanups); |
61bb466e KW |
299 | return; |
300 | } | |
dc5dd1eb | 301 | snprintf (buf, 511, "%s/%s/as", nto_procfs_path, dirp->d_name); |
61bb466e KW |
302 | pid = atoi (dirp->d_name); |
303 | } | |
304 | while (pid == 0); | |
305 | ||
306 | /* Open the procfs path. */ | |
307 | fd = open (buf, O_RDONLY); | |
308 | if (fd == -1) | |
309 | { | |
dc5dd1eb | 310 | fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n", |
d737fd7f | 311 | buf, errno, safe_strerror (errno)); |
9fe4a216 | 312 | do_cleanups (cleanups); |
61bb466e KW |
313 | return; |
314 | } | |
9fe4a216 | 315 | inner_cleanup = make_cleanup_close (fd); |
61bb466e KW |
316 | |
317 | pidinfo = (procfs_info *) buf; | |
318 | if (devctl (fd, DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK) | |
319 | { | |
dc5dd1eb | 320 | fprintf_unfiltered (gdb_stderr, |
d737fd7f KW |
321 | "devctl DCMD_PROC_INFO failed - %d (%s)\n", |
322 | errno, safe_strerror (errno)); | |
61bb466e KW |
323 | break; |
324 | } | |
325 | num_threads = pidinfo->num_threads; | |
326 | ||
327 | info = (procfs_debuginfo *) buf; | |
328 | if (devctl (fd, DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0) != EOK) | |
329 | strcpy (name, "unavailable"); | |
330 | else | |
331 | strcpy (name, info->path); | |
332 | ||
333 | /* Collect state info on all the threads. */ | |
334 | status = (procfs_status *) buf; | |
335 | for (status->tid = 1; status->tid <= num_threads; status->tid++) | |
336 | { | |
337 | if (devctl (fd, DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0) != EOK | |
338 | && status->tid != 0) | |
339 | break; | |
340 | if (status->tid != 0) | |
341 | printf_filtered ("%s - %d/%d\n", name, pid, status->tid); | |
342 | } | |
9fe4a216 TT |
343 | |
344 | do_cleanups (inner_cleanup); | |
61bb466e KW |
345 | } |
346 | while (dirp != NULL); | |
347 | ||
9fe4a216 | 348 | do_cleanups (cleanups); |
61bb466e KW |
349 | return; |
350 | } | |
351 | ||
352 | void | |
353 | procfs_meminfo (char *args, int from_tty) | |
354 | { | |
355 | procfs_mapinfo *mapinfos = NULL; | |
356 | static int num_mapinfos = 0; | |
357 | procfs_mapinfo *mapinfo_p, *mapinfo_p2; | |
358 | int flags = ~0, err, num, i, j; | |
359 | ||
360 | struct | |
361 | { | |
362 | procfs_debuginfo info; | |
363 | char buff[_POSIX_PATH_MAX]; | |
364 | } map; | |
365 | ||
366 | struct info | |
367 | { | |
368 | unsigned addr; | |
369 | unsigned size; | |
370 | unsigned flags; | |
371 | unsigned debug_vaddr; | |
372 | unsigned long long offset; | |
373 | }; | |
374 | ||
375 | struct printinfo | |
376 | { | |
377 | unsigned long long ino; | |
378 | unsigned dev; | |
379 | struct info text; | |
380 | struct info data; | |
381 | char name[256]; | |
382 | } printme; | |
383 | ||
384 | /* Get the number of map entrys. */ | |
385 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num); | |
386 | if (err != EOK) | |
387 | { | |
d737fd7f KW |
388 | printf ("failed devctl num mapinfos - %d (%s)\n", err, |
389 | safe_strerror (err)); | |
61bb466e KW |
390 | return; |
391 | } | |
392 | ||
393 | mapinfos = xmalloc (num * sizeof (procfs_mapinfo)); | |
394 | ||
395 | num_mapinfos = num; | |
396 | mapinfo_p = mapinfos; | |
397 | ||
398 | /* Fill the map entrys. */ | |
399 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, mapinfo_p, num | |
400 | * sizeof (procfs_mapinfo), &num); | |
401 | if (err != EOK) | |
402 | { | |
5483d879 | 403 | printf ("failed devctl mapinfos - %d (%s)\n", err, safe_strerror (err)); |
61bb466e KW |
404 | xfree (mapinfos); |
405 | return; | |
406 | } | |
407 | ||
408 | num = min (num, num_mapinfos); | |
409 | ||
410 | /* Run through the list of mapinfos, and store the data and text info | |
411 | so we can print it at the bottom of the loop. */ | |
412 | for (mapinfo_p = mapinfos, i = 0; i < num; i++, mapinfo_p++) | |
413 | { | |
414 | if (!(mapinfo_p->flags & flags)) | |
415 | mapinfo_p->ino = 0; | |
416 | ||
417 | if (mapinfo_p->ino == 0) /* Already visited. */ | |
418 | continue; | |
419 | ||
420 | map.info.vaddr = mapinfo_p->vaddr; | |
421 | ||
422 | err = devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
423 | if (err != EOK) | |
424 | continue; | |
425 | ||
426 | memset (&printme, 0, sizeof printme); | |
427 | printme.dev = mapinfo_p->dev; | |
428 | printme.ino = mapinfo_p->ino; | |
429 | printme.text.addr = mapinfo_p->vaddr; | |
430 | printme.text.size = mapinfo_p->size; | |
431 | printme.text.flags = mapinfo_p->flags; | |
432 | printme.text.offset = mapinfo_p->offset; | |
433 | printme.text.debug_vaddr = map.info.vaddr; | |
434 | strcpy (printme.name, map.info.path); | |
435 | ||
436 | /* Check for matching data. */ | |
437 | for (mapinfo_p2 = mapinfos, j = 0; j < num; j++, mapinfo_p2++) | |
438 | { | |
439 | if (mapinfo_p2->vaddr != mapinfo_p->vaddr | |
440 | && mapinfo_p2->ino == mapinfo_p->ino | |
441 | && mapinfo_p2->dev == mapinfo_p->dev) | |
442 | { | |
443 | map.info.vaddr = mapinfo_p2->vaddr; | |
444 | err = | |
445 | devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
446 | if (err != EOK) | |
447 | continue; | |
448 | ||
449 | if (strcmp (map.info.path, printme.name)) | |
450 | continue; | |
451 | ||
452 | /* Lower debug_vaddr is always text, if nessessary, swap. */ | |
453 | if ((int) map.info.vaddr < (int) printme.text.debug_vaddr) | |
454 | { | |
455 | memcpy (&(printme.data), &(printme.text), | |
456 | sizeof (printme.data)); | |
457 | printme.text.addr = mapinfo_p2->vaddr; | |
458 | printme.text.size = mapinfo_p2->size; | |
459 | printme.text.flags = mapinfo_p2->flags; | |
460 | printme.text.offset = mapinfo_p2->offset; | |
461 | printme.text.debug_vaddr = map.info.vaddr; | |
462 | } | |
463 | else | |
464 | { | |
465 | printme.data.addr = mapinfo_p2->vaddr; | |
466 | printme.data.size = mapinfo_p2->size; | |
467 | printme.data.flags = mapinfo_p2->flags; | |
468 | printme.data.offset = mapinfo_p2->offset; | |
469 | printme.data.debug_vaddr = map.info.vaddr; | |
470 | } | |
471 | mapinfo_p2->ino = 0; | |
472 | } | |
473 | } | |
474 | mapinfo_p->ino = 0; | |
475 | ||
476 | printf_filtered ("%s\n", printme.name); | |
477 | printf_filtered ("\ttext=%08x bytes @ 0x%08x\n", printme.text.size, | |
478 | printme.text.addr); | |
479 | printf_filtered ("\t\tflags=%08x\n", printme.text.flags); | |
480 | printf_filtered ("\t\tdebug=%08x\n", printme.text.debug_vaddr); | |
481 | printf_filtered ("\t\toffset=%016llx\n", printme.text.offset); | |
482 | if (printme.data.size) | |
483 | { | |
484 | printf_filtered ("\tdata=%08x bytes @ 0x%08x\n", printme.data.size, | |
485 | printme.data.addr); | |
486 | printf_filtered ("\t\tflags=%08x\n", printme.data.flags); | |
487 | printf_filtered ("\t\tdebug=%08x\n", printme.data.debug_vaddr); | |
488 | printf_filtered ("\t\toffset=%016llx\n", printme.data.offset); | |
489 | } | |
490 | printf_filtered ("\tdev=0x%x\n", printme.dev); | |
491 | printf_filtered ("\tino=0x%x\n", (unsigned int) printme.ino); | |
492 | } | |
493 | xfree (mapinfos); | |
494 | return; | |
495 | } | |
496 | ||
497 | /* Print status information about what we're accessing. */ | |
498 | static void | |
499 | procfs_files_info (struct target_ops *ignore) | |
500 | { | |
181e7f93 PA |
501 | struct inferior *inf = current_inferior (); |
502 | ||
61bb466e | 503 | printf_unfiltered ("\tUsing the running image of %s %s via %s.\n", |
3fdfcbf1 | 504 | inf->attach_flag ? "attached" : "child", |
61bb466e KW |
505 | target_pid_to_str (inferior_ptid), nto_procfs_path); |
506 | } | |
507 | ||
508 | /* Mark our target-struct as eligible for stray "run" and "attach" commands. */ | |
509 | static int | |
5483d879 | 510 | procfs_can_run (void) |
61bb466e KW |
511 | { |
512 | return 1; | |
513 | } | |
514 | ||
515 | /* Attach to process PID, then initialize for debugging it. */ | |
516 | static void | |
136d6dae | 517 | procfs_attach (struct target_ops *ops, char *args, int from_tty) |
61bb466e KW |
518 | { |
519 | char *exec_file; | |
520 | int pid; | |
181e7f93 | 521 | struct inferior *inf; |
61bb466e KW |
522 | |
523 | if (!args) | |
e2e0b3e5 | 524 | error_no_arg (_("process-id to attach")); |
61bb466e KW |
525 | |
526 | pid = atoi (args); | |
527 | ||
528 | if (pid == getpid ()) | |
8a3fe4f8 | 529 | error (_("Attaching GDB to itself is not a good idea...")); |
61bb466e KW |
530 | |
531 | if (from_tty) | |
532 | { | |
533 | exec_file = (char *) get_exec_file (0); | |
534 | ||
535 | if (exec_file) | |
536 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
537 | target_pid_to_str (pid_to_ptid (pid))); | |
538 | else | |
539 | printf_unfiltered ("Attaching to %s\n", | |
540 | target_pid_to_str (pid_to_ptid (pid))); | |
541 | ||
542 | gdb_flush (gdb_stdout); | |
543 | } | |
544 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
181e7f93 PA |
545 | inf = add_inferior (pid); |
546 | inf->attach_flag = 1; | |
7f9f62ba | 547 | |
28439f5e | 548 | push_target (ops); |
7f9f62ba | 549 | |
28439f5e | 550 | procfs_find_new_threads (ops); |
61bb466e KW |
551 | } |
552 | ||
553 | static void | |
554 | procfs_post_attach (pid_t pid) | |
555 | { | |
61bb466e | 556 | if (exec_bfd) |
42e9a5a0 | 557 | solib_create_inferior_hook (); |
61bb466e KW |
558 | } |
559 | ||
560 | static ptid_t | |
561 | do_attach (ptid_t ptid) | |
562 | { | |
563 | procfs_status status; | |
564 | struct sigevent event; | |
dc5dd1eb | 565 | char path[PATH_MAX]; |
61bb466e | 566 | |
dc5dd1eb | 567 | snprintf (path, PATH_MAX - 1, "%s/%d/as", nto_procfs_path, PIDGET (ptid)); |
61bb466e KW |
568 | ctl_fd = open (path, O_RDWR); |
569 | if (ctl_fd == -1) | |
8a3fe4f8 | 570 | error (_("Couldn't open proc file %s, error %d (%s)"), path, errno, |
dc5dd1eb | 571 | safe_strerror (errno)); |
61bb466e | 572 | if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK) |
8a3fe4f8 | 573 | error (_("Couldn't stop process")); |
61bb466e KW |
574 | |
575 | /* Define a sigevent for process stopped notification. */ | |
576 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
577 | event.sigev_signo = SIGUSR1; | |
578 | event.sigev_code = 0; | |
579 | event.sigev_value.sival_ptr = NULL; | |
580 | event.sigev_priority = -1; | |
581 | devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0); | |
582 | ||
583 | if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK | |
584 | && status.flags & _DEBUG_FLAG_STOPPED) | |
d737fd7f | 585 | SignalKill (nto_node (), PIDGET (ptid), 0, SIGCONT, 0, 0); |
61bb466e | 586 | nto_init_solib_absolute_prefix (); |
103fd00d | 587 | return ptid_build (PIDGET (ptid), 0, status.tid); |
61bb466e KW |
588 | } |
589 | ||
590 | /* Ask the user what to do when an interrupt is received. */ | |
591 | static void | |
dc5dd1eb | 592 | interrupt_query (void) |
61bb466e KW |
593 | { |
594 | target_terminal_ours (); | |
595 | ||
9e2f0ad4 HZ |
596 | if (query (_("Interrupted while waiting for the program.\n\ |
597 | Give up (and stop debugging it)? "))) | |
61bb466e KW |
598 | { |
599 | target_mourn_inferior (); | |
315a522e | 600 | deprecated_throw_reason (RETURN_QUIT); |
61bb466e KW |
601 | } |
602 | ||
603 | target_terminal_inferior (); | |
604 | } | |
605 | ||
606 | /* The user typed ^C twice. */ | |
607 | static void | |
608 | nto_interrupt_twice (int signo) | |
609 | { | |
610 | signal (signo, ofunc); | |
611 | interrupt_query (); | |
612 | signal (signo, nto_interrupt_twice); | |
613 | } | |
614 | ||
615 | static void | |
616 | nto_interrupt (int signo) | |
617 | { | |
618 | /* If this doesn't work, try more severe steps. */ | |
619 | signal (signo, nto_interrupt_twice); | |
620 | ||
f9c72d52 | 621 | target_stop (inferior_ptid); |
61bb466e KW |
622 | } |
623 | ||
624 | static ptid_t | |
117de6a9 PA |
625 | procfs_wait (struct target_ops *ops, |
626 | ptid_t ptid, struct target_waitstatus *ourstatus) | |
61bb466e KW |
627 | { |
628 | sigset_t set; | |
629 | siginfo_t info; | |
630 | procfs_status status; | |
631 | static int exit_signo = 0; /* To track signals that cause termination. */ | |
632 | ||
633 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
634 | ||
635 | if (ptid_equal (inferior_ptid, null_ptid)) | |
636 | { | |
637 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
638 | ourstatus->value.sig = TARGET_SIGNAL_0; | |
639 | exit_signo = 0; | |
640 | return null_ptid; | |
641 | } | |
642 | ||
643 | sigemptyset (&set); | |
644 | sigaddset (&set, SIGUSR1); | |
645 | ||
646 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
647 | while (!(status.flags & _DEBUG_FLAG_ISTOP)) | |
648 | { | |
649 | ofunc = (void (*)()) signal (SIGINT, nto_interrupt); | |
650 | sigwaitinfo (&set, &info); | |
651 | signal (SIGINT, ofunc); | |
652 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
653 | } | |
654 | ||
655 | if (status.flags & _DEBUG_FLAG_SSTEP) | |
656 | { | |
657 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
658 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
659 | } | |
660 | /* Was it a breakpoint? */ | |
661 | else if (status.flags & _DEBUG_FLAG_TRACE) | |
662 | { | |
663 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
664 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
665 | } | |
666 | else if (status.flags & _DEBUG_FLAG_ISTOP) | |
667 | { | |
668 | switch (status.why) | |
669 | { | |
670 | case _DEBUG_WHY_SIGNALLED: | |
671 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
672 | ourstatus->value.sig = | |
673 | target_signal_from_host (status.info.si_signo); | |
674 | exit_signo = 0; | |
675 | break; | |
676 | case _DEBUG_WHY_FAULTED: | |
677 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
678 | if (status.info.si_signo == SIGTRAP) | |
679 | { | |
680 | ourstatus->value.sig = 0; | |
681 | exit_signo = 0; | |
682 | } | |
683 | else | |
684 | { | |
685 | ourstatus->value.sig = | |
686 | target_signal_from_host (status.info.si_signo); | |
687 | exit_signo = ourstatus->value.sig; | |
688 | } | |
689 | break; | |
690 | ||
691 | case _DEBUG_WHY_TERMINATED: | |
692 | { | |
693 | int waitval = 0; | |
694 | ||
695 | waitpid (PIDGET (inferior_ptid), &waitval, WNOHANG); | |
696 | if (exit_signo) | |
697 | { | |
698 | /* Abnormal death. */ | |
699 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
700 | ourstatus->value.sig = exit_signo; | |
701 | } | |
702 | else | |
703 | { | |
704 | /* Normal death. */ | |
705 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
706 | ourstatus->value.integer = WEXITSTATUS (waitval); | |
707 | } | |
708 | exit_signo = 0; | |
709 | break; | |
710 | } | |
711 | ||
712 | case _DEBUG_WHY_REQUESTED: | |
713 | /* We are assuming a requested stop is due to a SIGINT. */ | |
714 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
715 | ourstatus->value.sig = TARGET_SIGNAL_INT; | |
716 | exit_signo = 0; | |
717 | break; | |
718 | } | |
719 | } | |
720 | ||
a6a7f2a5 | 721 | return ptid_build (status.pid, 0, status.tid); |
61bb466e KW |
722 | } |
723 | ||
724 | /* Read the current values of the inferior's registers, both the | |
725 | general register set and floating point registers (if supported) | |
726 | and update gdb's idea of their current values. */ | |
727 | static void | |
28439f5e PA |
728 | procfs_fetch_registers (struct target_ops *ops, |
729 | struct regcache *regcache, int regno) | |
61bb466e KW |
730 | { |
731 | union | |
732 | { | |
733 | procfs_greg greg; | |
734 | procfs_fpreg fpreg; | |
735 | procfs_altreg altreg; | |
736 | } | |
737 | reg; | |
738 | int regsize; | |
739 | ||
740 | procfs_set_thread (inferior_ptid); | |
741 | if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK) | |
56be3814 | 742 | nto_supply_gregset (regcache, (char *) ®.greg); |
61bb466e KW |
743 | if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size) |
744 | == EOK) | |
56be3814 | 745 | nto_supply_fpregset (regcache, (char *) ®.fpreg); |
61bb466e KW |
746 | if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size) |
747 | == EOK) | |
56be3814 | 748 | nto_supply_altregset (regcache, (char *) ®.altreg); |
61bb466e KW |
749 | } |
750 | ||
751 | /* Copy LEN bytes to/from inferior's memory starting at MEMADDR | |
752 | from/to debugger memory starting at MYADDR. Copy from inferior | |
753 | if DOWRITE is zero or to inferior if DOWRITE is nonzero. | |
754 | ||
755 | Returns the length copied, which is either the LEN argument or | |
756 | zero. This xfer function does not do partial moves, since procfs_ops | |
757 | doesn't allow memory operations to cross below us in the target stack | |
758 | anyway. */ | |
759 | static int | |
14ef7606 | 760 | procfs_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int dowrite, |
61bb466e KW |
761 | struct mem_attrib *attrib, struct target_ops *target) |
762 | { | |
763 | int nbytes = 0; | |
764 | ||
765 | if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) == (off_t) memaddr) | |
766 | { | |
767 | if (dowrite) | |
768 | nbytes = write (ctl_fd, myaddr, len); | |
769 | else | |
770 | nbytes = read (ctl_fd, myaddr, len); | |
771 | if (nbytes < 0) | |
772 | nbytes = 0; | |
773 | } | |
774 | return (nbytes); | |
775 | } | |
776 | ||
777 | /* Take a program previously attached to and detaches it. | |
778 | The program resumes execution and will no longer stop | |
779 | on signals, etc. We'd better not have left any breakpoints | |
780 | in the program or it'll die when it hits one. */ | |
781 | static void | |
136d6dae | 782 | procfs_detach (struct target_ops *ops, char *args, int from_tty) |
61bb466e KW |
783 | { |
784 | int siggnal = 0; | |
7f9f62ba | 785 | int pid; |
61bb466e KW |
786 | |
787 | if (from_tty) | |
788 | { | |
789 | char *exec_file = get_exec_file (0); | |
790 | if (exec_file == 0) | |
791 | exec_file = ""; | |
792 | printf_unfiltered ("Detaching from program: %s %s\n", | |
793 | exec_file, target_pid_to_str (inferior_ptid)); | |
794 | gdb_flush (gdb_stdout); | |
795 | } | |
796 | if (args) | |
797 | siggnal = atoi (args); | |
798 | ||
799 | if (siggnal) | |
d737fd7f | 800 | SignalKill (nto_node (), PIDGET (inferior_ptid), 0, siggnal, 0, 0); |
61bb466e KW |
801 | |
802 | close (ctl_fd); | |
803 | ctl_fd = -1; | |
7f9f62ba PA |
804 | |
805 | pid = ptid_get_pid (inferior_ptid); | |
61bb466e | 806 | inferior_ptid = null_ptid; |
7f9f62ba PA |
807 | detach_inferior (pid); |
808 | init_thread_list (); | |
61bb466e KW |
809 | unpush_target (&procfs_ops); /* Pop out of handling an inferior. */ |
810 | } | |
811 | ||
812 | static int | |
813 | procfs_breakpoint (CORE_ADDR addr, int type, int size) | |
814 | { | |
815 | procfs_break brk; | |
816 | ||
817 | brk.type = type; | |
818 | brk.addr = addr; | |
819 | brk.size = size; | |
820 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
821 | if (errno != EOK) | |
822 | return 1; | |
823 | return 0; | |
824 | } | |
825 | ||
826 | static int | |
8181d85f | 827 | procfs_insert_breakpoint (struct bp_target_info *bp_tgt) |
61bb466e | 828 | { |
8181d85f | 829 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, 0); |
61bb466e KW |
830 | } |
831 | ||
832 | static int | |
8181d85f | 833 | procfs_remove_breakpoint (struct bp_target_info *bp_tgt) |
61bb466e | 834 | { |
8181d85f | 835 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, -1); |
61bb466e KW |
836 | } |
837 | ||
838 | static int | |
8181d85f | 839 | procfs_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
61bb466e | 840 | { |
8181d85f DJ |
841 | return procfs_breakpoint (bp_tgt->placed_address, |
842 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0); | |
61bb466e KW |
843 | } |
844 | ||
845 | static int | |
8181d85f | 846 | procfs_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
61bb466e | 847 | { |
8181d85f DJ |
848 | return procfs_breakpoint (bp_tgt->placed_address, |
849 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1); | |
61bb466e KW |
850 | } |
851 | ||
852 | static void | |
28439f5e PA |
853 | procfs_resume (struct target_ops *ops, |
854 | ptid_t ptid, int step, enum target_signal signo) | |
61bb466e KW |
855 | { |
856 | int signal_to_pass; | |
857 | procfs_status status; | |
14ef7606 | 858 | sigset_t *run_fault = (sigset_t *) (void *) &run.fault; |
61bb466e KW |
859 | |
860 | if (ptid_equal (inferior_ptid, null_ptid)) | |
861 | return; | |
862 | ||
863 | procfs_set_thread (ptid_equal (ptid, minus_one_ptid) ? inferior_ptid : | |
864 | ptid); | |
865 | ||
866 | run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE; | |
867 | if (step) | |
868 | run.flags |= _DEBUG_RUN_STEP; | |
869 | ||
14ef7606 AR |
870 | sigemptyset (run_fault); |
871 | sigaddset (run_fault, FLTBPT); | |
872 | sigaddset (run_fault, FLTTRACE); | |
873 | sigaddset (run_fault, FLTILL); | |
874 | sigaddset (run_fault, FLTPRIV); | |
875 | sigaddset (run_fault, FLTBOUNDS); | |
876 | sigaddset (run_fault, FLTIOVF); | |
877 | sigaddset (run_fault, FLTIZDIV); | |
878 | sigaddset (run_fault, FLTFPE); | |
61bb466e | 879 | /* Peter V will be changing this at some point. */ |
14ef7606 | 880 | sigaddset (run_fault, FLTPAGE); |
61bb466e KW |
881 | |
882 | run.flags |= _DEBUG_RUN_ARM; | |
883 | ||
884 | sigemptyset (&run.trace); | |
885 | notice_signals (); | |
886 | signal_to_pass = target_signal_to_host (signo); | |
887 | ||
888 | if (signal_to_pass) | |
889 | { | |
890 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
891 | signal_to_pass = target_signal_to_host (signo); | |
892 | if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED)) | |
893 | { | |
894 | if (signal_to_pass != status.info.si_signo) | |
895 | { | |
d737fd7f KW |
896 | SignalKill (nto_node (), PIDGET (inferior_ptid), 0, |
897 | signal_to_pass, 0, 0); | |
61bb466e KW |
898 | run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG; |
899 | } | |
900 | else /* Let it kill the program without telling us. */ | |
901 | sigdelset (&run.trace, signal_to_pass); | |
902 | } | |
903 | } | |
904 | else | |
905 | run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT; | |
906 | ||
907 | errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0); | |
908 | if (errno != EOK) | |
909 | { | |
910 | perror ("run error!\n"); | |
911 | return; | |
912 | } | |
913 | } | |
914 | ||
915 | static void | |
136d6dae | 916 | procfs_mourn_inferior (struct target_ops *ops) |
61bb466e KW |
917 | { |
918 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
919 | { | |
d737fd7f | 920 | SignalKill (nto_node (), PIDGET (inferior_ptid), 0, SIGKILL, 0, 0); |
61bb466e KW |
921 | close (ctl_fd); |
922 | } | |
923 | inferior_ptid = null_ptid; | |
924 | init_thread_list (); | |
925 | unpush_target (&procfs_ops); | |
926 | generic_mourn_inferior (); | |
61bb466e KW |
927 | } |
928 | ||
929 | /* This function breaks up an argument string into an argument | |
930 | vector suitable for passing to execvp(). | |
931 | E.g., on "run a b c d" this routine would get as input | |
932 | the string "a b c d", and as output it would fill in argv with | |
933 | the four arguments "a", "b", "c", "d". The only additional | |
934 | functionality is simple quoting. The gdb command: | |
935 | run a "b c d" f | |
936 | will fill in argv with the three args "a", "b c d", "e". */ | |
937 | static void | |
938 | breakup_args (char *scratch, char **argv) | |
939 | { | |
940 | char *pp, *cp = scratch; | |
941 | char quoting = 0; | |
942 | ||
943 | for (;;) | |
944 | { | |
945 | /* Scan past leading separators. */ | |
946 | quoting = 0; | |
947 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') | |
948 | cp++; | |
949 | ||
950 | /* Break if at end of string. */ | |
951 | if (*cp == '\0') | |
952 | break; | |
953 | ||
954 | /* Take an arg. */ | |
955 | if (*cp == '"') | |
956 | { | |
957 | cp++; | |
958 | quoting = strchr (cp, '"') ? 1 : 0; | |
959 | } | |
960 | ||
961 | *argv++ = cp; | |
962 | ||
963 | /* Scan for next arg separator. */ | |
964 | pp = cp; | |
965 | if (quoting) | |
966 | cp = strchr (pp, '"'); | |
967 | if ((cp == NULL) || (!quoting)) | |
968 | cp = strchr (pp, ' '); | |
969 | if (cp == NULL) | |
970 | cp = strchr (pp, '\t'); | |
971 | if (cp == NULL) | |
972 | cp = strchr (pp, '\n'); | |
973 | ||
974 | /* No separators => end of string => break. */ | |
975 | if (cp == NULL) | |
976 | { | |
977 | pp = cp; | |
978 | break; | |
979 | } | |
980 | ||
981 | /* Replace the separator with a terminator. */ | |
982 | *cp++ = '\0'; | |
983 | } | |
984 | ||
985 | /* Execv requires a null-terminated arg vector. */ | |
986 | *argv = NULL; | |
987 | } | |
988 | ||
989 | static void | |
136d6dae VP |
990 | procfs_create_inferior (struct target_ops *ops, char *exec_file, |
991 | char *allargs, char **env, int from_tty) | |
61bb466e KW |
992 | { |
993 | struct inheritance inherit; | |
994 | pid_t pid; | |
995 | int flags, errn; | |
996 | char **argv, *args; | |
3cb3b8df | 997 | const char *in = "", *out = "", *err = ""; |
61bb466e KW |
998 | int fd, fds[3]; |
999 | sigset_t set; | |
3cb3b8df | 1000 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
3fdfcbf1 | 1001 | struct inferior *inf; |
61bb466e KW |
1002 | |
1003 | argv = xmalloc (((strlen (allargs) + 1) / (unsigned) 2 + 2) * | |
1004 | sizeof (*argv)); | |
1005 | argv[0] = get_exec_file (1); | |
1006 | if (!argv[0]) | |
1007 | { | |
1008 | if (exec_file) | |
1009 | argv[0] = exec_file; | |
1010 | else | |
1011 | return; | |
1012 | } | |
1013 | ||
1014 | args = xstrdup (allargs); | |
1015 | breakup_args (args, exec_file ? &argv[1] : &argv[0]); | |
1016 | ||
1017 | argv = nto_parse_redirection (argv, &in, &out, &err); | |
1018 | ||
1019 | fds[0] = STDIN_FILENO; | |
1020 | fds[1] = STDOUT_FILENO; | |
1021 | fds[2] = STDERR_FILENO; | |
1022 | ||
1023 | /* If the user specified I/O via gdb's --tty= arg, use it, but only | |
1024 | if the i/o is not also being specified via redirection. */ | |
1025 | if (inferior_io_terminal) | |
1026 | { | |
1027 | if (!in[0]) | |
1028 | in = inferior_io_terminal; | |
1029 | if (!out[0]) | |
1030 | out = inferior_io_terminal; | |
1031 | if (!err[0]) | |
1032 | err = inferior_io_terminal; | |
1033 | } | |
1034 | ||
1035 | if (in[0]) | |
1036 | { | |
1037 | fd = open (in, O_RDONLY); | |
1038 | if (fd == -1) | |
1039 | perror (in); | |
1040 | else | |
1041 | fds[0] = fd; | |
1042 | } | |
1043 | if (out[0]) | |
1044 | { | |
1045 | fd = open (out, O_WRONLY); | |
1046 | if (fd == -1) | |
1047 | perror (out); | |
1048 | else | |
1049 | fds[1] = fd; | |
1050 | } | |
1051 | if (err[0]) | |
1052 | { | |
1053 | fd = open (err, O_WRONLY); | |
1054 | if (fd == -1) | |
1055 | perror (err); | |
1056 | else | |
1057 | fds[2] = fd; | |
1058 | } | |
1059 | ||
1060 | /* Clear any pending SIGUSR1's but keep the behavior the same. */ | |
1061 | signal (SIGUSR1, signal (SIGUSR1, SIG_IGN)); | |
1062 | ||
1063 | sigemptyset (&set); | |
1064 | sigaddset (&set, SIGUSR1); | |
1065 | sigprocmask (SIG_UNBLOCK, &set, NULL); | |
1066 | ||
1067 | memset (&inherit, 0, sizeof (inherit)); | |
1068 | ||
1069 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0) | |
1070 | { | |
d737fd7f | 1071 | inherit.nd = nto_node (); |
61bb466e KW |
1072 | inherit.flags |= SPAWN_SETND; |
1073 | inherit.flags &= ~SPAWN_EXEC; | |
1074 | } | |
1075 | inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD; | |
1076 | inherit.pgroup = SPAWN_NEWPGROUP; | |
1077 | pid = spawnp (argv[0], 3, fds, &inherit, argv, | |
1078 | ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0); | |
1079 | xfree (args); | |
1080 | ||
1081 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1082 | ||
1083 | if (pid == -1) | |
8a3fe4f8 | 1084 | error (_("Error spawning %s: %d (%s)"), argv[0], errno, |
d737fd7f | 1085 | safe_strerror (errno)); |
61bb466e KW |
1086 | |
1087 | if (fds[0] != STDIN_FILENO) | |
1088 | close (fds[0]); | |
1089 | if (fds[1] != STDOUT_FILENO) | |
1090 | close (fds[1]); | |
1091 | if (fds[2] != STDERR_FILENO) | |
1092 | close (fds[2]); | |
1093 | ||
1094 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
28439f5e | 1095 | procfs_find_new_threads (ops); |
61bb466e | 1096 | |
3fdfcbf1 AR |
1097 | inf = add_inferior (pid); |
1098 | inf->attach_flag = 0; | |
7f9f62ba | 1099 | |
61bb466e KW |
1100 | flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */ |
1101 | errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0); | |
1102 | if (errn != EOK) | |
1103 | { | |
1104 | /* FIXME: expected warning? */ | |
1105 | /* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n", | |
1106 | errn, strerror(errn) ); */ | |
1107 | } | |
28439f5e | 1108 | push_target (ops); |
61bb466e KW |
1109 | target_terminal_init (); |
1110 | ||
61bb466e KW |
1111 | if (exec_bfd != NULL |
1112 | || (symfile_objfile != NULL && symfile_objfile->obfd != NULL)) | |
42e9a5a0 | 1113 | solib_create_inferior_hook (); |
61bb466e KW |
1114 | } |
1115 | ||
1116 | static void | |
f9c72d52 | 1117 | procfs_stop (ptid_t ptid) |
61bb466e KW |
1118 | { |
1119 | devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0); | |
1120 | } | |
1121 | ||
1122 | static void | |
7d85a9c0 | 1123 | procfs_kill_inferior (struct target_ops *ops) |
61bb466e KW |
1124 | { |
1125 | target_mourn_inferior (); | |
1126 | } | |
1127 | ||
1128 | /* Store register REGNO, or all registers if REGNO == -1, from the contents | |
1129 | of REGISTERS. */ | |
1130 | static void | |
316f2060 | 1131 | procfs_prepare_to_store (struct regcache *regcache) |
61bb466e KW |
1132 | { |
1133 | } | |
1134 | ||
1135 | /* Fill buf with regset and return devctl cmd to do the setting. Return | |
1136 | -1 if we fail to get the regset. Store size of regset in regsize. */ | |
1137 | static int | |
1138 | get_regset (int regset, char *buf, int bufsize, int *regsize) | |
1139 | { | |
1140 | int dev_get, dev_set; | |
1141 | switch (regset) | |
1142 | { | |
1143 | case NTO_REG_GENERAL: | |
1144 | dev_get = DCMD_PROC_GETGREG; | |
1145 | dev_set = DCMD_PROC_SETGREG; | |
1146 | break; | |
1147 | ||
1148 | case NTO_REG_FLOAT: | |
1149 | dev_get = DCMD_PROC_GETFPREG; | |
1150 | dev_set = DCMD_PROC_SETFPREG; | |
1151 | break; | |
1152 | ||
1153 | case NTO_REG_ALT: | |
1154 | dev_get = DCMD_PROC_GETALTREG; | |
1155 | dev_set = DCMD_PROC_SETALTREG; | |
1156 | break; | |
1157 | ||
1158 | case NTO_REG_SYSTEM: | |
1159 | default: | |
1160 | return -1; | |
1161 | } | |
1162 | if (devctl (ctl_fd, dev_get, &buf, bufsize, regsize) != EOK) | |
1163 | return -1; | |
1164 | ||
1165 | return dev_set; | |
1166 | } | |
1167 | ||
1168 | void | |
28439f5e PA |
1169 | procfs_store_registers (struct target_ops *ops, |
1170 | struct regcache *regcache, int regno) | |
61bb466e KW |
1171 | { |
1172 | union | |
1173 | { | |
1174 | procfs_greg greg; | |
1175 | procfs_fpreg fpreg; | |
1176 | procfs_altreg altreg; | |
1177 | } | |
1178 | reg; | |
1179 | unsigned off; | |
1180 | int len, regset, regsize, dev_set, err; | |
1181 | char *data; | |
1182 | ||
1183 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1184 | return; | |
1185 | procfs_set_thread (inferior_ptid); | |
1186 | ||
1187 | if (regno == -1) | |
1188 | { | |
1189 | for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++) | |
1190 | { | |
1191 | dev_set = get_regset (regset, (char *) ®, | |
1192 | sizeof (reg), ®size); | |
1193 | if (dev_set == -1) | |
1194 | continue; | |
1195 | ||
56be3814 | 1196 | if (nto_regset_fill (regcache, regset, (char *) ®) == -1) |
61bb466e KW |
1197 | continue; |
1198 | ||
1199 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1200 | if (err != EOK) | |
1201 | fprintf_unfiltered (gdb_stderr, | |
1202 | "Warning unable to write regset %d: %s\n", | |
dc5dd1eb | 1203 | regno, safe_strerror (err)); |
61bb466e KW |
1204 | } |
1205 | } | |
1206 | else | |
1207 | { | |
1208 | regset = nto_regset_id (regno); | |
1209 | if (regset == -1) | |
1210 | return; | |
1211 | ||
1212 | dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size); | |
1213 | if (dev_set == -1) | |
1214 | return; | |
1215 | ||
60441ab9 UW |
1216 | len = nto_register_area (get_regcache_arch (regcache), |
1217 | regno, regset, &off); | |
61bb466e KW |
1218 | |
1219 | if (len < 1) | |
1220 | return; | |
1221 | ||
56be3814 | 1222 | regcache_raw_collect (regcache, regno, (char *) ® + off); |
61bb466e KW |
1223 | |
1224 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1225 | if (err != EOK) | |
1226 | fprintf_unfiltered (gdb_stderr, | |
1227 | "Warning unable to write regset %d: %s\n", regno, | |
dc5dd1eb | 1228 | safe_strerror (err)); |
61bb466e KW |
1229 | } |
1230 | } | |
1231 | ||
1232 | static void | |
1233 | notice_signals (void) | |
1234 | { | |
1235 | int signo; | |
1236 | ||
1237 | for (signo = 1; signo < NSIG; signo++) | |
1238 | { | |
1239 | if (signal_stop_state (target_signal_from_host (signo)) == 0 | |
1240 | && signal_print_state (target_signal_from_host (signo)) == 0 | |
1241 | && signal_pass_state (target_signal_from_host (signo)) == 1) | |
1242 | sigdelset (&run.trace, signo); | |
1243 | else | |
1244 | sigaddset (&run.trace, signo); | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | /* When the user changes the state of gdb's signal handling via the | |
1249 | "handle" command, this function gets called to see if any change | |
1250 | in the /proc interface is required. It is also called internally | |
1251 | by other /proc interface functions to initialize the state of | |
1252 | the traced signal set. */ | |
1253 | static void | |
1254 | procfs_notice_signals (ptid_t ptid) | |
1255 | { | |
1256 | sigemptyset (&run.trace); | |
1257 | notice_signals (); | |
1258 | } | |
1259 | ||
1260 | static struct tidinfo * | |
1261 | procfs_thread_info (pid_t pid, short tid) | |
1262 | { | |
1263 | /* NYI */ | |
1264 | return NULL; | |
1265 | } | |
1266 | ||
1267 | char * | |
117de6a9 | 1268 | procfs_pid_to_str (struct target_ops *ops, ptid_t ptid) |
61bb466e KW |
1269 | { |
1270 | static char buf[1024]; | |
1271 | int pid, tid, n; | |
1272 | struct tidinfo *tip; | |
1273 | ||
1274 | pid = ptid_get_pid (ptid); | |
1275 | tid = ptid_get_tid (ptid); | |
1276 | ||
dc5dd1eb | 1277 | n = snprintf (buf, 1023, "process %d", pid); |
61bb466e KW |
1278 | |
1279 | #if 0 /* NYI */ | |
1280 | tip = procfs_thread_info (pid, tid); | |
1281 | if (tip != NULL) | |
dc5dd1eb | 1282 | snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state); |
61bb466e KW |
1283 | #endif |
1284 | ||
1285 | return buf; | |
1286 | } | |
1287 | ||
1288 | static void | |
dc5dd1eb | 1289 | init_procfs_ops (void) |
61bb466e KW |
1290 | { |
1291 | procfs_ops.to_shortname = "procfs"; | |
1292 | procfs_ops.to_longname = "QNX Neutrino procfs child process"; | |
1293 | procfs_ops.to_doc = | |
1294 | "QNX Neutrino procfs child process (started by the \"run\" command).\n\ | |
1295 | target procfs <node>"; | |
1296 | procfs_ops.to_open = procfs_open; | |
1297 | procfs_ops.to_attach = procfs_attach; | |
1298 | procfs_ops.to_post_attach = procfs_post_attach; | |
1299 | procfs_ops.to_detach = procfs_detach; | |
1300 | procfs_ops.to_resume = procfs_resume; | |
1301 | procfs_ops.to_wait = procfs_wait; | |
1302 | procfs_ops.to_fetch_registers = procfs_fetch_registers; | |
1303 | procfs_ops.to_store_registers = procfs_store_registers; | |
1304 | procfs_ops.to_prepare_to_store = procfs_prepare_to_store; | |
c8e73a31 | 1305 | procfs_ops.deprecated_xfer_memory = procfs_xfer_memory; |
61bb466e KW |
1306 | procfs_ops.to_files_info = procfs_files_info; |
1307 | procfs_ops.to_insert_breakpoint = procfs_insert_breakpoint; | |
1308 | procfs_ops.to_remove_breakpoint = procfs_remove_breakpoint; | |
1309 | procfs_ops.to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint; | |
1310 | procfs_ops.to_insert_hw_breakpoint = procfs_insert_hw_breakpoint; | |
1311 | procfs_ops.to_remove_hw_breakpoint = procfs_remove_breakpoint; | |
1312 | procfs_ops.to_insert_watchpoint = procfs_insert_hw_watchpoint; | |
1313 | procfs_ops.to_remove_watchpoint = procfs_remove_hw_watchpoint; | |
1314 | procfs_ops.to_stopped_by_watchpoint = procfs_stopped_by_watchpoint; | |
1315 | procfs_ops.to_terminal_init = terminal_init_inferior; | |
1316 | procfs_ops.to_terminal_inferior = terminal_inferior; | |
1317 | procfs_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
1318 | procfs_ops.to_terminal_ours = terminal_ours; | |
1319 | procfs_ops.to_terminal_info = child_terminal_info; | |
1320 | procfs_ops.to_kill = procfs_kill_inferior; | |
1321 | procfs_ops.to_create_inferior = procfs_create_inferior; | |
1322 | procfs_ops.to_mourn_inferior = procfs_mourn_inferior; | |
1323 | procfs_ops.to_can_run = procfs_can_run; | |
1324 | procfs_ops.to_notice_signals = procfs_notice_signals; | |
1325 | procfs_ops.to_thread_alive = procfs_thread_alive; | |
1326 | procfs_ops.to_find_new_threads = procfs_find_new_threads; | |
1327 | procfs_ops.to_pid_to_str = procfs_pid_to_str; | |
1328 | procfs_ops.to_stop = procfs_stop; | |
1329 | procfs_ops.to_stratum = process_stratum; | |
1330 | procfs_ops.to_has_all_memory = 1; | |
1331 | procfs_ops.to_has_memory = 1; | |
1332 | procfs_ops.to_has_stack = 1; | |
1333 | procfs_ops.to_has_registers = 1; | |
1334 | procfs_ops.to_has_execution = 1; | |
1335 | procfs_ops.to_magic = OPS_MAGIC; | |
1336 | procfs_ops.to_have_continuable_watchpoint = 1; | |
1337 | } | |
1338 | ||
1339 | #define OSTYPE_NTO 1 | |
1340 | ||
1341 | void | |
dc5dd1eb | 1342 | _initialize_procfs (void) |
61bb466e KW |
1343 | { |
1344 | sigset_t set; | |
1345 | ||
1346 | init_procfs_ops (); | |
1347 | add_target (&procfs_ops); | |
1348 | ||
1349 | /* We use SIGUSR1 to gain control after we block waiting for a process. | |
1350 | We use sigwaitevent to wait. */ | |
1351 | sigemptyset (&set); | |
1352 | sigaddset (&set, SIGUSR1); | |
1353 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1354 | ||
1355 | /* Set up trace and fault sets, as gdb expects them. */ | |
1356 | sigemptyset (&run.trace); | |
61bb466e KW |
1357 | |
1358 | /* Stuff some information. */ | |
1359 | nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags; | |
1360 | nto_cpuinfo_valid = 1; | |
1361 | ||
1bedd215 AC |
1362 | add_info ("pidlist", procfs_pidlist, _("pidlist")); |
1363 | add_info ("meminfo", procfs_meminfo, _("memory information")); | |
d737fd7f KW |
1364 | |
1365 | nto_is_nto_target = procfs_is_nto_target; | |
61bb466e KW |
1366 | } |
1367 | ||
1368 | ||
1369 | static int | |
1370 | procfs_hw_watchpoint (int addr, int len, int type) | |
1371 | { | |
1372 | procfs_break brk; | |
1373 | ||
1374 | switch (type) | |
1375 | { | |
1376 | case 1: /* Read. */ | |
1377 | brk.type = _DEBUG_BREAK_RD; | |
1378 | break; | |
1379 | case 2: /* Read/Write. */ | |
1380 | brk.type = _DEBUG_BREAK_RW; | |
1381 | break; | |
1382 | default: /* Modify. */ | |
1383 | /* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */ | |
1384 | brk.type = _DEBUG_BREAK_RW; | |
1385 | } | |
1386 | brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */ | |
1387 | brk.addr = addr; | |
1388 | brk.size = len; | |
1389 | ||
1390 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1391 | if (errno != EOK) | |
1392 | { | |
1393 | perror ("Failed to set hardware watchpoint"); | |
1394 | return -1; | |
1395 | } | |
1396 | return 0; | |
1397 | } | |
1398 | ||
1399 | static int | |
1400 | procfs_can_use_hw_breakpoint (int type, int cnt, int othertype) | |
1401 | { | |
1402 | return 1; | |
1403 | } | |
1404 | ||
1405 | static int | |
1406 | procfs_remove_hw_watchpoint (CORE_ADDR addr, int len, int type) | |
1407 | { | |
1408 | return procfs_hw_watchpoint (addr, -1, type); | |
1409 | } | |
1410 | ||
1411 | static int | |
1412 | procfs_insert_hw_watchpoint (CORE_ADDR addr, int len, int type) | |
1413 | { | |
1414 | return procfs_hw_watchpoint (addr, len, type); | |
1415 | } | |
1416 | ||
1417 | static int | |
1418 | procfs_stopped_by_watchpoint (void) | |
1419 | { | |
1420 | return 0; | |
1421 | } |