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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 | ||
281b533b | 4 | Copyright (C) 2003, 2006 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 | |
12 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
21 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
22 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
23 | Boston, MA 02110-1301, USA. */ | |
61bb466e KW |
24 | |
25 | #include "defs.h" | |
26 | ||
27 | #include <fcntl.h> | |
28 | #include <spawn.h> | |
29 | #include <sys/debug.h> | |
30 | #include <sys/procfs.h> | |
31 | #include <sys/neutrino.h> | |
32 | #include <sys/syspage.h> | |
5483d879 | 33 | #include "gdb_dirent.h" |
61bb466e KW |
34 | #include <sys/netmgr.h> |
35 | ||
60250e8b | 36 | #include "exceptions.h" |
61bb466e KW |
37 | #include "gdb_string.h" |
38 | #include "gdbcore.h" | |
39 | #include "inferior.h" | |
40 | #include "target.h" | |
41 | #include "objfiles.h" | |
42 | #include "gdbthread.h" | |
43 | #include "nto-tdep.h" | |
44 | #include "command.h" | |
45 | #include "regcache.h" | |
46 | ||
47 | #define NULL_PID 0 | |
48 | #define _DEBUG_FLAG_TRACE (_DEBUG_FLAG_TRACE_EXEC|_DEBUG_FLAG_TRACE_RD|\ | |
49 | _DEBUG_FLAG_TRACE_WR|_DEBUG_FLAG_TRACE_MODIFY) | |
50 | ||
51 | static struct target_ops procfs_ops; | |
52 | ||
53 | int ctl_fd; | |
54 | ||
55 | static void (*ofunc) (); | |
56 | ||
57 | static procfs_run run; | |
58 | ||
59 | static void procfs_open (char *, int); | |
60 | ||
61 | static int procfs_can_run (void); | |
62 | ||
63 | static ptid_t procfs_wait (ptid_t, struct target_waitstatus *); | |
64 | ||
65 | static int procfs_xfer_memory (CORE_ADDR, char *, int, int, | |
66 | struct mem_attrib *attrib, | |
67 | struct target_ops *); | |
68 | ||
69 | static void procfs_fetch_registers (int); | |
70 | ||
71 | static void notice_signals (void); | |
72 | ||
73 | static void init_procfs_ops (void); | |
74 | ||
75 | static ptid_t do_attach (ptid_t ptid); | |
76 | ||
77 | static int procfs_can_use_hw_breakpoint (int, int, int); | |
78 | ||
79 | static int procfs_insert_hw_breakpoint (CORE_ADDR, char *); | |
80 | ||
81 | static int procfs_remove_hw_breakpoint (CORE_ADDR addr, char *); | |
82 | ||
83 | static int procfs_insert_hw_watchpoint (CORE_ADDR addr, int len, int type); | |
84 | ||
85 | static int procfs_remove_hw_watchpoint (CORE_ADDR addr, int len, int type); | |
86 | ||
87 | static int procfs_stopped_by_watchpoint (void); | |
88 | ||
89 | /* These two globals are only ever set in procfs_open(), but are | |
90 | referenced elsewhere. 'nto_procfs_node' is a flag used to say | |
91 | whether we are local, or we should get the current node descriptor | |
92 | for the remote QNX node. */ | |
93 | static char nto_procfs_path[PATH_MAX] = { "/proc" }; | |
94 | static unsigned nto_procfs_node = ND_LOCAL_NODE; | |
95 | ||
96 | /* Return the current QNX Node, or error out. This is a simple | |
97 | wrapper for the netmgr_strtond() function. The reason this | |
98 | is required is because QNX node descriptors are transient so | |
99 | we have to re-acquire them every time. */ | |
100 | static unsigned | |
d737fd7f | 101 | nto_node (void) |
61bb466e KW |
102 | { |
103 | unsigned node; | |
104 | ||
d737fd7f | 105 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0) |
61bb466e KW |
106 | return ND_LOCAL_NODE; |
107 | ||
d737fd7f | 108 | node = netmgr_strtond (nto_procfs_path, 0); |
61bb466e | 109 | if (node == -1) |
8a3fe4f8 | 110 | error (_("Lost the QNX node. Debug session probably over.")); |
61bb466e KW |
111 | |
112 | return (node); | |
113 | } | |
114 | ||
d737fd7f KW |
115 | static enum gdb_osabi |
116 | procfs_is_nto_target (bfd *abfd) | |
117 | { | |
118 | return GDB_OSABI_QNXNTO; | |
119 | } | |
120 | ||
61bb466e KW |
121 | /* This is called when we call 'target procfs <arg>' from the (gdb) prompt. |
122 | For QNX6 (nto), the only valid arg will be a QNX node string, | |
123 | eg: "/net/some_node". If arg is not a valid QNX node, we will | |
124 | default to local. */ | |
125 | static void | |
126 | procfs_open (char *arg, int from_tty) | |
127 | { | |
128 | char *nodestr; | |
129 | char *endstr; | |
130 | char buffer[50]; | |
131 | int fd, total_size; | |
132 | procfs_sysinfo *sysinfo; | |
133 | ||
d737fd7f KW |
134 | nto_is_nto_target = procfs_is_nto_target; |
135 | ||
61bb466e KW |
136 | /* Set the default node used for spawning to this one, |
137 | and only override it if there is a valid arg. */ | |
138 | ||
139 | nto_procfs_node = ND_LOCAL_NODE; | |
140 | nodestr = arg ? xstrdup (arg) : arg; | |
141 | ||
142 | init_thread_list (); | |
143 | ||
144 | if (nodestr) | |
145 | { | |
146 | nto_procfs_node = netmgr_strtond (nodestr, &endstr); | |
147 | if (nto_procfs_node == -1) | |
148 | { | |
149 | if (errno == ENOTSUP) | |
150 | printf_filtered ("QNX Net Manager not found.\n"); | |
151 | printf_filtered ("Invalid QNX node %s: error %d (%s).\n", nodestr, | |
dc5dd1eb | 152 | errno, safe_strerror (errno)); |
61bb466e KW |
153 | xfree (nodestr); |
154 | nodestr = NULL; | |
155 | nto_procfs_node = ND_LOCAL_NODE; | |
156 | } | |
157 | else if (*endstr) | |
158 | { | |
159 | if (*(endstr - 1) == '/') | |
160 | *(endstr - 1) = 0; | |
161 | else | |
162 | *endstr = 0; | |
163 | } | |
164 | } | |
d737fd7f KW |
165 | snprintf (nto_procfs_path, PATH_MAX - 1, "%s%s", nodestr ? nodestr : "", |
166 | "/proc"); | |
61bb466e KW |
167 | if (nodestr) |
168 | xfree (nodestr); | |
169 | ||
170 | fd = open (nto_procfs_path, O_RDONLY); | |
171 | if (fd == -1) | |
172 | { | |
173 | printf_filtered ("Error opening %s : %d (%s)\n", nto_procfs_path, errno, | |
dc5dd1eb | 174 | safe_strerror (errno)); |
8a3fe4f8 | 175 | error (_("Invalid procfs arg")); |
61bb466e KW |
176 | } |
177 | ||
178 | sysinfo = (void *) buffer; | |
179 | if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, sizeof buffer, 0) != EOK) | |
180 | { | |
181 | printf_filtered ("Error getting size: %d (%s)\n", errno, | |
dc5dd1eb | 182 | safe_strerror (errno)); |
61bb466e | 183 | close (fd); |
8a3fe4f8 | 184 | error (_("Devctl failed.")); |
61bb466e KW |
185 | } |
186 | else | |
187 | { | |
188 | total_size = sysinfo->total_size; | |
189 | sysinfo = alloca (total_size); | |
190 | if (!sysinfo) | |
191 | { | |
192 | printf_filtered ("Memory error: %d (%s)\n", errno, | |
dc5dd1eb | 193 | safe_strerror (errno)); |
61bb466e | 194 | close (fd); |
8a3fe4f8 | 195 | error (_("alloca failed.")); |
61bb466e KW |
196 | } |
197 | else | |
198 | { | |
199 | if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, total_size, 0) != EOK) | |
200 | { | |
201 | printf_filtered ("Error getting sysinfo: %d (%s)\n", errno, | |
dc5dd1eb | 202 | safe_strerror (errno)); |
61bb466e | 203 | close (fd); |
8a3fe4f8 | 204 | error (_("Devctl failed.")); |
61bb466e KW |
205 | } |
206 | else | |
207 | { | |
208 | if (sysinfo->type != | |
209 | nto_map_arch_to_cputype (TARGET_ARCHITECTURE->arch_name)) | |
210 | { | |
211 | close (fd); | |
8a3fe4f8 | 212 | error (_("Invalid target CPU.")); |
61bb466e KW |
213 | } |
214 | } | |
215 | } | |
216 | } | |
217 | close (fd); | |
218 | printf_filtered ("Debugging using %s\n", nto_procfs_path); | |
219 | } | |
220 | ||
221 | static void | |
222 | procfs_set_thread (ptid_t ptid) | |
223 | { | |
224 | pid_t tid; | |
225 | ||
226 | tid = ptid_get_tid (ptid); | |
227 | devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0); | |
228 | } | |
229 | ||
230 | /* Return nonzero if the thread TH is still alive. */ | |
231 | static int | |
232 | procfs_thread_alive (ptid_t ptid) | |
233 | { | |
234 | pid_t tid; | |
235 | ||
236 | tid = ptid_get_tid (ptid); | |
237 | if (devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0) == EOK) | |
238 | return 1; | |
239 | return 0; | |
240 | } | |
241 | ||
242 | void | |
243 | procfs_find_new_threads (void) | |
244 | { | |
245 | procfs_status status; | |
246 | pid_t pid; | |
247 | ptid_t ptid; | |
248 | ||
249 | if (ctl_fd == -1) | |
250 | return; | |
251 | ||
252 | pid = ptid_get_pid (inferior_ptid); | |
253 | ||
254 | for (status.tid = 1;; ++status.tid) | |
255 | { | |
256 | if (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0) | |
257 | != EOK && status.tid != 0) | |
258 | break; | |
259 | ptid = ptid_build (pid, 0, status.tid); | |
260 | if (!in_thread_list (ptid)) | |
261 | add_thread (ptid); | |
262 | } | |
263 | return; | |
264 | } | |
265 | ||
266 | void | |
267 | procfs_pidlist (char *args, int from_tty) | |
268 | { | |
269 | DIR *dp = NULL; | |
270 | struct dirent *dirp = NULL; | |
271 | int fd = -1; | |
272 | char buf[512]; | |
273 | procfs_info *pidinfo = NULL; | |
274 | procfs_debuginfo *info = NULL; | |
275 | procfs_status *status = NULL; | |
276 | pid_t num_threads = 0; | |
277 | pid_t pid; | |
278 | char name[512]; | |
279 | ||
280 | dp = opendir (nto_procfs_path); | |
281 | if (dp == NULL) | |
282 | { | |
dc5dd1eb | 283 | fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)", |
d737fd7f | 284 | nto_procfs_path, errno, safe_strerror (errno)); |
61bb466e KW |
285 | return; |
286 | } | |
287 | ||
288 | /* Start scan at first pid. */ | |
289 | rewinddir (dp); | |
290 | ||
291 | do | |
292 | { | |
293 | /* Get the right pid and procfs path for the pid. */ | |
294 | do | |
295 | { | |
296 | dirp = readdir (dp); | |
297 | if (dirp == NULL) | |
298 | { | |
299 | closedir (dp); | |
300 | return; | |
301 | } | |
dc5dd1eb | 302 | snprintf (buf, 511, "%s/%s/as", nto_procfs_path, dirp->d_name); |
61bb466e KW |
303 | pid = atoi (dirp->d_name); |
304 | } | |
305 | while (pid == 0); | |
306 | ||
307 | /* Open the procfs path. */ | |
308 | fd = open (buf, O_RDONLY); | |
309 | if (fd == -1) | |
310 | { | |
dc5dd1eb | 311 | fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n", |
d737fd7f | 312 | buf, errno, safe_strerror (errno)); |
61bb466e KW |
313 | closedir (dp); |
314 | return; | |
315 | } | |
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 | } | |
343 | close (fd); | |
344 | } | |
345 | while (dirp != NULL); | |
346 | ||
347 | close (fd); | |
348 | closedir (dp); | |
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 | { | |
501 | printf_unfiltered ("\tUsing the running image of %s %s via %s.\n", | |
502 | attach_flag ? "attached" : "child", | |
503 | target_pid_to_str (inferior_ptid), nto_procfs_path); | |
504 | } | |
505 | ||
506 | /* Mark our target-struct as eligible for stray "run" and "attach" commands. */ | |
507 | static int | |
5483d879 | 508 | procfs_can_run (void) |
61bb466e KW |
509 | { |
510 | return 1; | |
511 | } | |
512 | ||
513 | /* Attach to process PID, then initialize for debugging it. */ | |
514 | static void | |
515 | procfs_attach (char *args, int from_tty) | |
516 | { | |
517 | char *exec_file; | |
518 | int pid; | |
519 | ||
520 | if (!args) | |
e2e0b3e5 | 521 | error_no_arg (_("process-id to attach")); |
61bb466e KW |
522 | |
523 | pid = atoi (args); | |
524 | ||
525 | if (pid == getpid ()) | |
8a3fe4f8 | 526 | error (_("Attaching GDB to itself is not a good idea...")); |
61bb466e KW |
527 | |
528 | if (from_tty) | |
529 | { | |
530 | exec_file = (char *) get_exec_file (0); | |
531 | ||
532 | if (exec_file) | |
533 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
534 | target_pid_to_str (pid_to_ptid (pid))); | |
535 | else | |
536 | printf_unfiltered ("Attaching to %s\n", | |
537 | target_pid_to_str (pid_to_ptid (pid))); | |
538 | ||
539 | gdb_flush (gdb_stdout); | |
540 | } | |
541 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
542 | push_target (&procfs_ops); | |
543 | } | |
544 | ||
545 | static void | |
546 | procfs_post_attach (pid_t pid) | |
547 | { | |
61bb466e | 548 | if (exec_bfd) |
42e9a5a0 | 549 | solib_create_inferior_hook (); |
61bb466e KW |
550 | } |
551 | ||
552 | static ptid_t | |
553 | do_attach (ptid_t ptid) | |
554 | { | |
555 | procfs_status status; | |
556 | struct sigevent event; | |
dc5dd1eb | 557 | char path[PATH_MAX]; |
61bb466e | 558 | |
dc5dd1eb | 559 | snprintf (path, PATH_MAX - 1, "%s/%d/as", nto_procfs_path, PIDGET (ptid)); |
61bb466e KW |
560 | ctl_fd = open (path, O_RDWR); |
561 | if (ctl_fd == -1) | |
8a3fe4f8 | 562 | error (_("Couldn't open proc file %s, error %d (%s)"), path, errno, |
dc5dd1eb | 563 | safe_strerror (errno)); |
61bb466e | 564 | if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK) |
8a3fe4f8 | 565 | error (_("Couldn't stop process")); |
61bb466e KW |
566 | |
567 | /* Define a sigevent for process stopped notification. */ | |
568 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
569 | event.sigev_signo = SIGUSR1; | |
570 | event.sigev_code = 0; | |
571 | event.sigev_value.sival_ptr = NULL; | |
572 | event.sigev_priority = -1; | |
573 | devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0); | |
574 | ||
575 | if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK | |
576 | && status.flags & _DEBUG_FLAG_STOPPED) | |
d737fd7f | 577 | SignalKill (nto_node (), PIDGET (ptid), 0, SIGCONT, 0, 0); |
61bb466e KW |
578 | attach_flag = 1; |
579 | nto_init_solib_absolute_prefix (); | |
580 | return ptid; | |
581 | } | |
582 | ||
583 | /* Ask the user what to do when an interrupt is received. */ | |
584 | static void | |
dc5dd1eb | 585 | interrupt_query (void) |
61bb466e KW |
586 | { |
587 | target_terminal_ours (); | |
588 | ||
589 | if (query ("Interrupted while waiting for the program.\n\ | |
590 | Give up (and stop debugging it)? ")) | |
591 | { | |
592 | target_mourn_inferior (); | |
315a522e | 593 | deprecated_throw_reason (RETURN_QUIT); |
61bb466e KW |
594 | } |
595 | ||
596 | target_terminal_inferior (); | |
597 | } | |
598 | ||
599 | /* The user typed ^C twice. */ | |
600 | static void | |
601 | nto_interrupt_twice (int signo) | |
602 | { | |
603 | signal (signo, ofunc); | |
604 | interrupt_query (); | |
605 | signal (signo, nto_interrupt_twice); | |
606 | } | |
607 | ||
608 | static void | |
609 | nto_interrupt (int signo) | |
610 | { | |
611 | /* If this doesn't work, try more severe steps. */ | |
612 | signal (signo, nto_interrupt_twice); | |
613 | ||
614 | target_stop (); | |
615 | } | |
616 | ||
617 | static ptid_t | |
618 | procfs_wait (ptid_t ptid, struct target_waitstatus *ourstatus) | |
619 | { | |
620 | sigset_t set; | |
621 | siginfo_t info; | |
622 | procfs_status status; | |
623 | static int exit_signo = 0; /* To track signals that cause termination. */ | |
624 | ||
625 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
626 | ||
627 | if (ptid_equal (inferior_ptid, null_ptid)) | |
628 | { | |
629 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
630 | ourstatus->value.sig = TARGET_SIGNAL_0; | |
631 | exit_signo = 0; | |
632 | return null_ptid; | |
633 | } | |
634 | ||
635 | sigemptyset (&set); | |
636 | sigaddset (&set, SIGUSR1); | |
637 | ||
638 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
639 | while (!(status.flags & _DEBUG_FLAG_ISTOP)) | |
640 | { | |
641 | ofunc = (void (*)()) signal (SIGINT, nto_interrupt); | |
642 | sigwaitinfo (&set, &info); | |
643 | signal (SIGINT, ofunc); | |
644 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
645 | } | |
646 | ||
647 | if (status.flags & _DEBUG_FLAG_SSTEP) | |
648 | { | |
649 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
650 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
651 | } | |
652 | /* Was it a breakpoint? */ | |
653 | else if (status.flags & _DEBUG_FLAG_TRACE) | |
654 | { | |
655 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
656 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
657 | } | |
658 | else if (status.flags & _DEBUG_FLAG_ISTOP) | |
659 | { | |
660 | switch (status.why) | |
661 | { | |
662 | case _DEBUG_WHY_SIGNALLED: | |
663 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
664 | ourstatus->value.sig = | |
665 | target_signal_from_host (status.info.si_signo); | |
666 | exit_signo = 0; | |
667 | break; | |
668 | case _DEBUG_WHY_FAULTED: | |
669 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
670 | if (status.info.si_signo == SIGTRAP) | |
671 | { | |
672 | ourstatus->value.sig = 0; | |
673 | exit_signo = 0; | |
674 | } | |
675 | else | |
676 | { | |
677 | ourstatus->value.sig = | |
678 | target_signal_from_host (status.info.si_signo); | |
679 | exit_signo = ourstatus->value.sig; | |
680 | } | |
681 | break; | |
682 | ||
683 | case _DEBUG_WHY_TERMINATED: | |
684 | { | |
685 | int waitval = 0; | |
686 | ||
687 | waitpid (PIDGET (inferior_ptid), &waitval, WNOHANG); | |
688 | if (exit_signo) | |
689 | { | |
690 | /* Abnormal death. */ | |
691 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
692 | ourstatus->value.sig = exit_signo; | |
693 | } | |
694 | else | |
695 | { | |
696 | /* Normal death. */ | |
697 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
698 | ourstatus->value.integer = WEXITSTATUS (waitval); | |
699 | } | |
700 | exit_signo = 0; | |
701 | break; | |
702 | } | |
703 | ||
704 | case _DEBUG_WHY_REQUESTED: | |
705 | /* We are assuming a requested stop is due to a SIGINT. */ | |
706 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
707 | ourstatus->value.sig = TARGET_SIGNAL_INT; | |
708 | exit_signo = 0; | |
709 | break; | |
710 | } | |
711 | } | |
712 | ||
713 | return inferior_ptid; | |
714 | } | |
715 | ||
716 | /* Read the current values of the inferior's registers, both the | |
717 | general register set and floating point registers (if supported) | |
718 | and update gdb's idea of their current values. */ | |
719 | static void | |
720 | procfs_fetch_registers (int regno) | |
721 | { | |
722 | union | |
723 | { | |
724 | procfs_greg greg; | |
725 | procfs_fpreg fpreg; | |
726 | procfs_altreg altreg; | |
727 | } | |
728 | reg; | |
729 | int regsize; | |
730 | ||
731 | procfs_set_thread (inferior_ptid); | |
732 | if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK) | |
733 | nto_supply_gregset ((char *) ®.greg); | |
734 | if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size) | |
735 | == EOK) | |
736 | nto_supply_fpregset ((char *) ®.fpreg); | |
737 | if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size) | |
738 | == EOK) | |
739 | nto_supply_altregset ((char *) ®.altreg); | |
740 | } | |
741 | ||
742 | /* Copy LEN bytes to/from inferior's memory starting at MEMADDR | |
743 | from/to debugger memory starting at MYADDR. Copy from inferior | |
744 | if DOWRITE is zero or to inferior if DOWRITE is nonzero. | |
745 | ||
746 | Returns the length copied, which is either the LEN argument or | |
747 | zero. This xfer function does not do partial moves, since procfs_ops | |
748 | doesn't allow memory operations to cross below us in the target stack | |
749 | anyway. */ | |
750 | static int | |
751 | procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int dowrite, | |
752 | struct mem_attrib *attrib, struct target_ops *target) | |
753 | { | |
754 | int nbytes = 0; | |
755 | ||
756 | if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) == (off_t) memaddr) | |
757 | { | |
758 | if (dowrite) | |
759 | nbytes = write (ctl_fd, myaddr, len); | |
760 | else | |
761 | nbytes = read (ctl_fd, myaddr, len); | |
762 | if (nbytes < 0) | |
763 | nbytes = 0; | |
764 | } | |
765 | return (nbytes); | |
766 | } | |
767 | ||
768 | /* Take a program previously attached to and detaches it. | |
769 | The program resumes execution and will no longer stop | |
770 | on signals, etc. We'd better not have left any breakpoints | |
771 | in the program or it'll die when it hits one. */ | |
772 | static void | |
773 | procfs_detach (char *args, int from_tty) | |
774 | { | |
775 | int siggnal = 0; | |
776 | ||
777 | if (from_tty) | |
778 | { | |
779 | char *exec_file = get_exec_file (0); | |
780 | if (exec_file == 0) | |
781 | exec_file = ""; | |
782 | printf_unfiltered ("Detaching from program: %s %s\n", | |
783 | exec_file, target_pid_to_str (inferior_ptid)); | |
784 | gdb_flush (gdb_stdout); | |
785 | } | |
786 | if (args) | |
787 | siggnal = atoi (args); | |
788 | ||
789 | if (siggnal) | |
d737fd7f | 790 | SignalKill (nto_node (), PIDGET (inferior_ptid), 0, siggnal, 0, 0); |
61bb466e KW |
791 | |
792 | close (ctl_fd); | |
793 | ctl_fd = -1; | |
794 | init_thread_list (); | |
795 | inferior_ptid = null_ptid; | |
796 | attach_flag = 0; | |
797 | unpush_target (&procfs_ops); /* Pop out of handling an inferior. */ | |
798 | } | |
799 | ||
800 | static int | |
801 | procfs_breakpoint (CORE_ADDR addr, int type, int size) | |
802 | { | |
803 | procfs_break brk; | |
804 | ||
805 | brk.type = type; | |
806 | brk.addr = addr; | |
807 | brk.size = size; | |
808 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
809 | if (errno != EOK) | |
810 | return 1; | |
811 | return 0; | |
812 | } | |
813 | ||
814 | static int | |
815 | procfs_insert_breakpoint (CORE_ADDR addr, char *contents_cache) | |
816 | { | |
817 | return procfs_breakpoint (addr, _DEBUG_BREAK_EXEC, 0); | |
818 | } | |
819 | ||
820 | static int | |
821 | procfs_remove_breakpoint (CORE_ADDR addr, char *contents_cache) | |
822 | { | |
823 | return procfs_breakpoint (addr, _DEBUG_BREAK_EXEC, -1); | |
824 | } | |
825 | ||
826 | static int | |
827 | procfs_insert_hw_breakpoint (CORE_ADDR addr, char *contents_cache) | |
828 | { | |
829 | return procfs_breakpoint (addr, _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0); | |
830 | } | |
831 | ||
832 | static int | |
833 | procfs_remove_hw_breakpoint (CORE_ADDR addr, char *contents_cache) | |
834 | { | |
835 | return procfs_breakpoint (addr, _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1); | |
836 | } | |
837 | ||
838 | static void | |
839 | procfs_resume (ptid_t ptid, int step, enum target_signal signo) | |
840 | { | |
841 | int signal_to_pass; | |
842 | procfs_status status; | |
843 | ||
844 | if (ptid_equal (inferior_ptid, null_ptid)) | |
845 | return; | |
846 | ||
847 | procfs_set_thread (ptid_equal (ptid, minus_one_ptid) ? inferior_ptid : | |
848 | ptid); | |
849 | ||
850 | run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE; | |
851 | if (step) | |
852 | run.flags |= _DEBUG_RUN_STEP; | |
853 | ||
854 | sigemptyset ((sigset_t *) &run.fault); | |
855 | sigaddset ((sigset_t *) &run.fault, FLTBPT); | |
856 | sigaddset ((sigset_t *) &run.fault, FLTTRACE); | |
857 | sigaddset ((sigset_t *) &run.fault, FLTILL); | |
858 | sigaddset ((sigset_t *) &run.fault, FLTPRIV); | |
859 | sigaddset ((sigset_t *) &run.fault, FLTBOUNDS); | |
860 | sigaddset ((sigset_t *) &run.fault, FLTIOVF); | |
861 | sigaddset ((sigset_t *) &run.fault, FLTIZDIV); | |
862 | sigaddset ((sigset_t *) &run.fault, FLTFPE); | |
863 | /* Peter V will be changing this at some point. */ | |
864 | sigaddset ((sigset_t *) &run.fault, FLTPAGE); | |
865 | ||
866 | run.flags |= _DEBUG_RUN_ARM; | |
867 | ||
868 | sigemptyset (&run.trace); | |
869 | notice_signals (); | |
870 | signal_to_pass = target_signal_to_host (signo); | |
871 | ||
872 | if (signal_to_pass) | |
873 | { | |
874 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
875 | signal_to_pass = target_signal_to_host (signo); | |
876 | if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED)) | |
877 | { | |
878 | if (signal_to_pass != status.info.si_signo) | |
879 | { | |
d737fd7f KW |
880 | SignalKill (nto_node (), PIDGET (inferior_ptid), 0, |
881 | signal_to_pass, 0, 0); | |
61bb466e KW |
882 | run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG; |
883 | } | |
884 | else /* Let it kill the program without telling us. */ | |
885 | sigdelset (&run.trace, signal_to_pass); | |
886 | } | |
887 | } | |
888 | else | |
889 | run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT; | |
890 | ||
891 | errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0); | |
892 | if (errno != EOK) | |
893 | { | |
894 | perror ("run error!\n"); | |
895 | return; | |
896 | } | |
897 | } | |
898 | ||
899 | static void | |
dc5dd1eb | 900 | procfs_mourn_inferior (void) |
61bb466e KW |
901 | { |
902 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
903 | { | |
d737fd7f | 904 | SignalKill (nto_node (), PIDGET (inferior_ptid), 0, SIGKILL, 0, 0); |
61bb466e KW |
905 | close (ctl_fd); |
906 | } | |
907 | inferior_ptid = null_ptid; | |
908 | init_thread_list (); | |
909 | unpush_target (&procfs_ops); | |
910 | generic_mourn_inferior (); | |
911 | attach_flag = 0; | |
912 | } | |
913 | ||
914 | /* This function breaks up an argument string into an argument | |
915 | vector suitable for passing to execvp(). | |
916 | E.g., on "run a b c d" this routine would get as input | |
917 | the string "a b c d", and as output it would fill in argv with | |
918 | the four arguments "a", "b", "c", "d". The only additional | |
919 | functionality is simple quoting. The gdb command: | |
920 | run a "b c d" f | |
921 | will fill in argv with the three args "a", "b c d", "e". */ | |
922 | static void | |
923 | breakup_args (char *scratch, char **argv) | |
924 | { | |
925 | char *pp, *cp = scratch; | |
926 | char quoting = 0; | |
927 | ||
928 | for (;;) | |
929 | { | |
930 | /* Scan past leading separators. */ | |
931 | quoting = 0; | |
932 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') | |
933 | cp++; | |
934 | ||
935 | /* Break if at end of string. */ | |
936 | if (*cp == '\0') | |
937 | break; | |
938 | ||
939 | /* Take an arg. */ | |
940 | if (*cp == '"') | |
941 | { | |
942 | cp++; | |
943 | quoting = strchr (cp, '"') ? 1 : 0; | |
944 | } | |
945 | ||
946 | *argv++ = cp; | |
947 | ||
948 | /* Scan for next arg separator. */ | |
949 | pp = cp; | |
950 | if (quoting) | |
951 | cp = strchr (pp, '"'); | |
952 | if ((cp == NULL) || (!quoting)) | |
953 | cp = strchr (pp, ' '); | |
954 | if (cp == NULL) | |
955 | cp = strchr (pp, '\t'); | |
956 | if (cp == NULL) | |
957 | cp = strchr (pp, '\n'); | |
958 | ||
959 | /* No separators => end of string => break. */ | |
960 | if (cp == NULL) | |
961 | { | |
962 | pp = cp; | |
963 | break; | |
964 | } | |
965 | ||
966 | /* Replace the separator with a terminator. */ | |
967 | *cp++ = '\0'; | |
968 | } | |
969 | ||
970 | /* Execv requires a null-terminated arg vector. */ | |
971 | *argv = NULL; | |
972 | } | |
973 | ||
974 | static void | |
c27cda74 AC |
975 | procfs_create_inferior (char *exec_file, char *allargs, char **env, |
976 | int from_tty) | |
61bb466e KW |
977 | { |
978 | struct inheritance inherit; | |
979 | pid_t pid; | |
980 | int flags, errn; | |
981 | char **argv, *args; | |
3cb3b8df | 982 | const char *in = "", *out = "", *err = ""; |
61bb466e KW |
983 | int fd, fds[3]; |
984 | sigset_t set; | |
3cb3b8df | 985 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
61bb466e KW |
986 | |
987 | argv = xmalloc (((strlen (allargs) + 1) / (unsigned) 2 + 2) * | |
988 | sizeof (*argv)); | |
989 | argv[0] = get_exec_file (1); | |
990 | if (!argv[0]) | |
991 | { | |
992 | if (exec_file) | |
993 | argv[0] = exec_file; | |
994 | else | |
995 | return; | |
996 | } | |
997 | ||
998 | args = xstrdup (allargs); | |
999 | breakup_args (args, exec_file ? &argv[1] : &argv[0]); | |
1000 | ||
1001 | argv = nto_parse_redirection (argv, &in, &out, &err); | |
1002 | ||
1003 | fds[0] = STDIN_FILENO; | |
1004 | fds[1] = STDOUT_FILENO; | |
1005 | fds[2] = STDERR_FILENO; | |
1006 | ||
1007 | /* If the user specified I/O via gdb's --tty= arg, use it, but only | |
1008 | if the i/o is not also being specified via redirection. */ | |
1009 | if (inferior_io_terminal) | |
1010 | { | |
1011 | if (!in[0]) | |
1012 | in = inferior_io_terminal; | |
1013 | if (!out[0]) | |
1014 | out = inferior_io_terminal; | |
1015 | if (!err[0]) | |
1016 | err = inferior_io_terminal; | |
1017 | } | |
1018 | ||
1019 | if (in[0]) | |
1020 | { | |
1021 | fd = open (in, O_RDONLY); | |
1022 | if (fd == -1) | |
1023 | perror (in); | |
1024 | else | |
1025 | fds[0] = fd; | |
1026 | } | |
1027 | if (out[0]) | |
1028 | { | |
1029 | fd = open (out, O_WRONLY); | |
1030 | if (fd == -1) | |
1031 | perror (out); | |
1032 | else | |
1033 | fds[1] = fd; | |
1034 | } | |
1035 | if (err[0]) | |
1036 | { | |
1037 | fd = open (err, O_WRONLY); | |
1038 | if (fd == -1) | |
1039 | perror (err); | |
1040 | else | |
1041 | fds[2] = fd; | |
1042 | } | |
1043 | ||
1044 | /* Clear any pending SIGUSR1's but keep the behavior the same. */ | |
1045 | signal (SIGUSR1, signal (SIGUSR1, SIG_IGN)); | |
1046 | ||
1047 | sigemptyset (&set); | |
1048 | sigaddset (&set, SIGUSR1); | |
1049 | sigprocmask (SIG_UNBLOCK, &set, NULL); | |
1050 | ||
1051 | memset (&inherit, 0, sizeof (inherit)); | |
1052 | ||
1053 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0) | |
1054 | { | |
d737fd7f | 1055 | inherit.nd = nto_node (); |
61bb466e KW |
1056 | inherit.flags |= SPAWN_SETND; |
1057 | inherit.flags &= ~SPAWN_EXEC; | |
1058 | } | |
1059 | inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD; | |
1060 | inherit.pgroup = SPAWN_NEWPGROUP; | |
1061 | pid = spawnp (argv[0], 3, fds, &inherit, argv, | |
1062 | ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0); | |
1063 | xfree (args); | |
1064 | ||
1065 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1066 | ||
1067 | if (pid == -1) | |
8a3fe4f8 | 1068 | error (_("Error spawning %s: %d (%s)"), argv[0], errno, |
d737fd7f | 1069 | safe_strerror (errno)); |
61bb466e KW |
1070 | |
1071 | if (fds[0] != STDIN_FILENO) | |
1072 | close (fds[0]); | |
1073 | if (fds[1] != STDOUT_FILENO) | |
1074 | close (fds[1]); | |
1075 | if (fds[2] != STDERR_FILENO) | |
1076 | close (fds[2]); | |
1077 | ||
1078 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
1079 | ||
1080 | attach_flag = 0; | |
1081 | flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */ | |
1082 | errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0); | |
1083 | if (errn != EOK) | |
1084 | { | |
1085 | /* FIXME: expected warning? */ | |
1086 | /* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n", | |
1087 | errn, strerror(errn) ); */ | |
1088 | } | |
1089 | push_target (&procfs_ops); | |
1090 | target_terminal_init (); | |
1091 | ||
61bb466e KW |
1092 | if (exec_bfd != NULL |
1093 | || (symfile_objfile != NULL && symfile_objfile->obfd != NULL)) | |
42e9a5a0 | 1094 | solib_create_inferior_hook (); |
d737fd7f | 1095 | stop_soon = 0; |
61bb466e KW |
1096 | } |
1097 | ||
1098 | static void | |
dc5dd1eb | 1099 | procfs_stop (void) |
61bb466e KW |
1100 | { |
1101 | devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0); | |
1102 | } | |
1103 | ||
1104 | static void | |
dc5dd1eb | 1105 | procfs_kill_inferior (void) |
61bb466e KW |
1106 | { |
1107 | target_mourn_inferior (); | |
1108 | } | |
1109 | ||
1110 | /* Store register REGNO, or all registers if REGNO == -1, from the contents | |
1111 | of REGISTERS. */ | |
1112 | static void | |
dc5dd1eb | 1113 | procfs_prepare_to_store (void) |
61bb466e KW |
1114 | { |
1115 | } | |
1116 | ||
1117 | /* Fill buf with regset and return devctl cmd to do the setting. Return | |
1118 | -1 if we fail to get the regset. Store size of regset in regsize. */ | |
1119 | static int | |
1120 | get_regset (int regset, char *buf, int bufsize, int *regsize) | |
1121 | { | |
1122 | int dev_get, dev_set; | |
1123 | switch (regset) | |
1124 | { | |
1125 | case NTO_REG_GENERAL: | |
1126 | dev_get = DCMD_PROC_GETGREG; | |
1127 | dev_set = DCMD_PROC_SETGREG; | |
1128 | break; | |
1129 | ||
1130 | case NTO_REG_FLOAT: | |
1131 | dev_get = DCMD_PROC_GETFPREG; | |
1132 | dev_set = DCMD_PROC_SETFPREG; | |
1133 | break; | |
1134 | ||
1135 | case NTO_REG_ALT: | |
1136 | dev_get = DCMD_PROC_GETALTREG; | |
1137 | dev_set = DCMD_PROC_SETALTREG; | |
1138 | break; | |
1139 | ||
1140 | case NTO_REG_SYSTEM: | |
1141 | default: | |
1142 | return -1; | |
1143 | } | |
1144 | if (devctl (ctl_fd, dev_get, &buf, bufsize, regsize) != EOK) | |
1145 | return -1; | |
1146 | ||
1147 | return dev_set; | |
1148 | } | |
1149 | ||
1150 | void | |
1151 | procfs_store_registers (int regno) | |
1152 | { | |
1153 | union | |
1154 | { | |
1155 | procfs_greg greg; | |
1156 | procfs_fpreg fpreg; | |
1157 | procfs_altreg altreg; | |
1158 | } | |
1159 | reg; | |
1160 | unsigned off; | |
1161 | int len, regset, regsize, dev_set, err; | |
1162 | char *data; | |
1163 | ||
1164 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1165 | return; | |
1166 | procfs_set_thread (inferior_ptid); | |
1167 | ||
1168 | if (regno == -1) | |
1169 | { | |
1170 | for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++) | |
1171 | { | |
1172 | dev_set = get_regset (regset, (char *) ®, | |
1173 | sizeof (reg), ®size); | |
1174 | if (dev_set == -1) | |
1175 | continue; | |
1176 | ||
1177 | if (nto_regset_fill (regset, (char *) ®) == -1) | |
1178 | continue; | |
1179 | ||
1180 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1181 | if (err != EOK) | |
1182 | fprintf_unfiltered (gdb_stderr, | |
1183 | "Warning unable to write regset %d: %s\n", | |
dc5dd1eb | 1184 | regno, safe_strerror (err)); |
61bb466e KW |
1185 | } |
1186 | } | |
1187 | else | |
1188 | { | |
1189 | regset = nto_regset_id (regno); | |
1190 | if (regset == -1) | |
1191 | return; | |
1192 | ||
1193 | dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size); | |
1194 | if (dev_set == -1) | |
1195 | return; | |
1196 | ||
1197 | len = nto_register_area (regno, regset, &off); | |
1198 | ||
1199 | if (len < 1) | |
1200 | return; | |
1201 | ||
822c9732 | 1202 | regcache_raw_collect (current_regcache, regno, (char *) ® + off); |
61bb466e KW |
1203 | |
1204 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1205 | if (err != EOK) | |
1206 | fprintf_unfiltered (gdb_stderr, | |
1207 | "Warning unable to write regset %d: %s\n", regno, | |
dc5dd1eb | 1208 | safe_strerror (err)); |
61bb466e KW |
1209 | } |
1210 | } | |
1211 | ||
1212 | static void | |
1213 | notice_signals (void) | |
1214 | { | |
1215 | int signo; | |
1216 | ||
1217 | for (signo = 1; signo < NSIG; signo++) | |
1218 | { | |
1219 | if (signal_stop_state (target_signal_from_host (signo)) == 0 | |
1220 | && signal_print_state (target_signal_from_host (signo)) == 0 | |
1221 | && signal_pass_state (target_signal_from_host (signo)) == 1) | |
1222 | sigdelset (&run.trace, signo); | |
1223 | else | |
1224 | sigaddset (&run.trace, signo); | |
1225 | } | |
1226 | } | |
1227 | ||
1228 | /* When the user changes the state of gdb's signal handling via the | |
1229 | "handle" command, this function gets called to see if any change | |
1230 | in the /proc interface is required. It is also called internally | |
1231 | by other /proc interface functions to initialize the state of | |
1232 | the traced signal set. */ | |
1233 | static void | |
1234 | procfs_notice_signals (ptid_t ptid) | |
1235 | { | |
1236 | sigemptyset (&run.trace); | |
1237 | notice_signals (); | |
1238 | } | |
1239 | ||
1240 | static struct tidinfo * | |
1241 | procfs_thread_info (pid_t pid, short tid) | |
1242 | { | |
1243 | /* NYI */ | |
1244 | return NULL; | |
1245 | } | |
1246 | ||
1247 | char * | |
1248 | procfs_pid_to_str (ptid_t ptid) | |
1249 | { | |
1250 | static char buf[1024]; | |
1251 | int pid, tid, n; | |
1252 | struct tidinfo *tip; | |
1253 | ||
1254 | pid = ptid_get_pid (ptid); | |
1255 | tid = ptid_get_tid (ptid); | |
1256 | ||
dc5dd1eb | 1257 | n = snprintf (buf, 1023, "process %d", pid); |
61bb466e KW |
1258 | |
1259 | #if 0 /* NYI */ | |
1260 | tip = procfs_thread_info (pid, tid); | |
1261 | if (tip != NULL) | |
dc5dd1eb | 1262 | snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state); |
61bb466e KW |
1263 | #endif |
1264 | ||
1265 | return buf; | |
1266 | } | |
1267 | ||
1268 | static void | |
dc5dd1eb | 1269 | init_procfs_ops (void) |
61bb466e KW |
1270 | { |
1271 | procfs_ops.to_shortname = "procfs"; | |
1272 | procfs_ops.to_longname = "QNX Neutrino procfs child process"; | |
1273 | procfs_ops.to_doc = | |
1274 | "QNX Neutrino procfs child process (started by the \"run\" command).\n\ | |
1275 | target procfs <node>"; | |
1276 | procfs_ops.to_open = procfs_open; | |
1277 | procfs_ops.to_attach = procfs_attach; | |
1278 | procfs_ops.to_post_attach = procfs_post_attach; | |
1279 | procfs_ops.to_detach = procfs_detach; | |
1280 | procfs_ops.to_resume = procfs_resume; | |
1281 | procfs_ops.to_wait = procfs_wait; | |
1282 | procfs_ops.to_fetch_registers = procfs_fetch_registers; | |
1283 | procfs_ops.to_store_registers = procfs_store_registers; | |
1284 | procfs_ops.to_prepare_to_store = procfs_prepare_to_store; | |
c8e73a31 | 1285 | procfs_ops.deprecated_xfer_memory = procfs_xfer_memory; |
61bb466e KW |
1286 | procfs_ops.to_files_info = procfs_files_info; |
1287 | procfs_ops.to_insert_breakpoint = procfs_insert_breakpoint; | |
1288 | procfs_ops.to_remove_breakpoint = procfs_remove_breakpoint; | |
1289 | procfs_ops.to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint; | |
1290 | procfs_ops.to_insert_hw_breakpoint = procfs_insert_hw_breakpoint; | |
1291 | procfs_ops.to_remove_hw_breakpoint = procfs_remove_breakpoint; | |
1292 | procfs_ops.to_insert_watchpoint = procfs_insert_hw_watchpoint; | |
1293 | procfs_ops.to_remove_watchpoint = procfs_remove_hw_watchpoint; | |
1294 | procfs_ops.to_stopped_by_watchpoint = procfs_stopped_by_watchpoint; | |
1295 | procfs_ops.to_terminal_init = terminal_init_inferior; | |
1296 | procfs_ops.to_terminal_inferior = terminal_inferior; | |
1297 | procfs_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
1298 | procfs_ops.to_terminal_ours = terminal_ours; | |
1299 | procfs_ops.to_terminal_info = child_terminal_info; | |
1300 | procfs_ops.to_kill = procfs_kill_inferior; | |
1301 | procfs_ops.to_create_inferior = procfs_create_inferior; | |
1302 | procfs_ops.to_mourn_inferior = procfs_mourn_inferior; | |
1303 | procfs_ops.to_can_run = procfs_can_run; | |
1304 | procfs_ops.to_notice_signals = procfs_notice_signals; | |
1305 | procfs_ops.to_thread_alive = procfs_thread_alive; | |
1306 | procfs_ops.to_find_new_threads = procfs_find_new_threads; | |
1307 | procfs_ops.to_pid_to_str = procfs_pid_to_str; | |
1308 | procfs_ops.to_stop = procfs_stop; | |
1309 | procfs_ops.to_stratum = process_stratum; | |
1310 | procfs_ops.to_has_all_memory = 1; | |
1311 | procfs_ops.to_has_memory = 1; | |
1312 | procfs_ops.to_has_stack = 1; | |
1313 | procfs_ops.to_has_registers = 1; | |
1314 | procfs_ops.to_has_execution = 1; | |
1315 | procfs_ops.to_magic = OPS_MAGIC; | |
1316 | procfs_ops.to_have_continuable_watchpoint = 1; | |
1317 | } | |
1318 | ||
1319 | #define OSTYPE_NTO 1 | |
1320 | ||
1321 | void | |
dc5dd1eb | 1322 | _initialize_procfs (void) |
61bb466e KW |
1323 | { |
1324 | sigset_t set; | |
1325 | ||
1326 | init_procfs_ops (); | |
1327 | add_target (&procfs_ops); | |
1328 | ||
1329 | /* We use SIGUSR1 to gain control after we block waiting for a process. | |
1330 | We use sigwaitevent to wait. */ | |
1331 | sigemptyset (&set); | |
1332 | sigaddset (&set, SIGUSR1); | |
1333 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1334 | ||
1335 | /* Set up trace and fault sets, as gdb expects them. */ | |
1336 | sigemptyset (&run.trace); | |
61bb466e KW |
1337 | |
1338 | /* Stuff some information. */ | |
1339 | nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags; | |
1340 | nto_cpuinfo_valid = 1; | |
1341 | ||
1bedd215 AC |
1342 | add_info ("pidlist", procfs_pidlist, _("pidlist")); |
1343 | add_info ("meminfo", procfs_meminfo, _("memory information")); | |
d737fd7f KW |
1344 | |
1345 | nto_is_nto_target = procfs_is_nto_target; | |
61bb466e KW |
1346 | } |
1347 | ||
1348 | ||
1349 | static int | |
1350 | procfs_hw_watchpoint (int addr, int len, int type) | |
1351 | { | |
1352 | procfs_break brk; | |
1353 | ||
1354 | switch (type) | |
1355 | { | |
1356 | case 1: /* Read. */ | |
1357 | brk.type = _DEBUG_BREAK_RD; | |
1358 | break; | |
1359 | case 2: /* Read/Write. */ | |
1360 | brk.type = _DEBUG_BREAK_RW; | |
1361 | break; | |
1362 | default: /* Modify. */ | |
1363 | /* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */ | |
1364 | brk.type = _DEBUG_BREAK_RW; | |
1365 | } | |
1366 | brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */ | |
1367 | brk.addr = addr; | |
1368 | brk.size = len; | |
1369 | ||
1370 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1371 | if (errno != EOK) | |
1372 | { | |
1373 | perror ("Failed to set hardware watchpoint"); | |
1374 | return -1; | |
1375 | } | |
1376 | return 0; | |
1377 | } | |
1378 | ||
1379 | static int | |
1380 | procfs_can_use_hw_breakpoint (int type, int cnt, int othertype) | |
1381 | { | |
1382 | return 1; | |
1383 | } | |
1384 | ||
1385 | static int | |
1386 | procfs_remove_hw_watchpoint (CORE_ADDR addr, int len, int type) | |
1387 | { | |
1388 | return procfs_hw_watchpoint (addr, -1, type); | |
1389 | } | |
1390 | ||
1391 | static int | |
1392 | procfs_insert_hw_watchpoint (CORE_ADDR addr, int len, int type) | |
1393 | { | |
1394 | return procfs_hw_watchpoint (addr, len, type); | |
1395 | } | |
1396 | ||
1397 | static int | |
1398 | procfs_stopped_by_watchpoint (void) | |
1399 | { | |
1400 | return 0; | |
1401 | } |