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Commit | Line | Data |
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61bb466e | 1 | /* Machine independent support for QNX Neutrino /proc (process file system) |
0df8b418 | 2 | for GDB. Written by Colin Burgess at QNX Software Systems Limited. |
61bb466e | 3 | |
e2882c85 | 4 | Copyright (C) 2003-2018 Free Software Foundation, Inc. |
61bb466e KW |
5 | |
6 | Contributed by QNX Software Systems Ltd. | |
7 | ||
8 | This file is part of GDB. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
61bb466e KW |
13 | (at your option) any later version. |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
61bb466e KW |
22 | |
23 | #include "defs.h" | |
24 | ||
25 | #include <fcntl.h> | |
26 | #include <spawn.h> | |
27 | #include <sys/debug.h> | |
28 | #include <sys/procfs.h> | |
29 | #include <sys/neutrino.h> | |
30 | #include <sys/syspage.h> | |
2978b111 | 31 | #include <dirent.h> |
61bb466e | 32 | #include <sys/netmgr.h> |
8a6c0ccd AR |
33 | #include <sys/auxv.h> |
34 | ||
61bb466e KW |
35 | #include "gdbcore.h" |
36 | #include "inferior.h" | |
37 | #include "target.h" | |
38 | #include "objfiles.h" | |
39 | #include "gdbthread.h" | |
40 | #include "nto-tdep.h" | |
41 | #include "command.h" | |
42 | #include "regcache.h" | |
5ea03926 | 43 | #include "solib.h" |
ee8e9165 | 44 | #include "inf-child.h" |
774ee6d2 | 45 | #include "common/filestuff.h" |
5dc1a704 | 46 | #include "common/scoped_fd.h" |
61bb466e KW |
47 | |
48 | #define NULL_PID 0 | |
49 | #define _DEBUG_FLAG_TRACE (_DEBUG_FLAG_TRACE_EXEC|_DEBUG_FLAG_TRACE_RD|\ | |
50 | _DEBUG_FLAG_TRACE_WR|_DEBUG_FLAG_TRACE_MODIFY) | |
51 | ||
61bb466e KW |
52 | int ctl_fd; |
53 | ||
a40805d4 | 54 | static sighandler_t ofunc; |
61bb466e KW |
55 | |
56 | static procfs_run run; | |
57 | ||
f6ac5f3d PA |
58 | /* Create the "native" and "procfs" targets. */ |
59 | ||
60 | struct nto_procfs_target : public inf_child_target | |
61 | { | |
62 | void open (const char *arg, int from_tty) override; | |
63 | ||
64 | void attach (const char *, int) override = 0; | |
65 | ||
66 | void post_attach (int); | |
67 | ||
68 | void detach (inferior *, int) override; | |
69 | ||
70 | void resume (ptid_t, int, enum gdb_signal) override; | |
71 | ||
72 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
73 | ||
74 | void fetch_registers (struct regcache *, int) override; | |
75 | void store_registers (struct regcache *, int) override; | |
76 | ||
77 | enum target_xfer_status xfer_partial (enum target_object object, | |
78 | const char *annex, | |
79 | gdb_byte *readbuf, | |
80 | const gdb_byte *writebuf, | |
81 | ULONGEST offset, ULONGEST len, | |
82 | ULONGEST *xfered_len) override; | |
83 | ||
84 | void files_info () override; | |
85 | ||
86 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
87 | ||
88 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
89 | enum remove_bp_reason) override; | |
90 | ||
91 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
92 | ||
93 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
94 | ||
95 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
96 | ||
97 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
98 | struct expression *) override; | |
99 | ||
100 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
101 | struct expression *) override; | |
102 | ||
103 | int stopped_by_watchpoint () override; | |
104 | ||
105 | void kill () override; | |
106 | ||
107 | void create_inferior (const char *, const std::string &, | |
108 | char **, int) override; | |
109 | ||
110 | void mourn_inferior () override; | |
61bb466e | 111 | |
f6ac5f3d | 112 | void pass_signals (int, unsigned char *) override; |
61bb466e | 113 | |
f6ac5f3d | 114 | int thread_alive (ptid_t ptid) override; |
61bb466e | 115 | |
f6ac5f3d | 116 | void update_thread_list () override; |
61bb466e | 117 | |
f6ac5f3d PA |
118 | const char *pid_to_str (ptid_t) override; |
119 | ||
120 | void interrupt () override; | |
121 | ||
122 | bool have_continuable_watchpoint () | |
123 | { return true; } | |
124 | ||
125 | const char *extra_thread_info (struct thread_info *) override; | |
126 | ||
127 | char *pid_to_exec_file (int pid) override; | |
128 | }; | |
129 | ||
130 | /* For "target native". */ | |
131 | struct nto_procfs_target_native final : public nto_procfs_target | |
132 | { | |
133 | /* Leave shortname as "native". */ | |
134 | ||
135 | const char *longname () override | |
136 | { return _("QNX Neutrino local process"); } | |
137 | ||
138 | const char *doc () override | |
139 | { return _("QNX Neutrino local process (started by the \"run\" command)."); } | |
140 | }; | |
141 | ||
142 | /* For "target procfs <node>". */ | |
143 | struct nto_procfs_target_procfs final : public nto_procfs_target | |
144 | { | |
145 | const char *shortname () override | |
146 | { return "procfs"; } | |
147 | ||
148 | const char *longname () override | |
149 | { return _("QNX Neutrino local or remote process"); } | |
150 | ||
151 | const char *doc () override | |
152 | { return _("QNX Neutrino process. target procfs <node>"); } | |
153 | }; | |
154 | ||
155 | static ptid_t do_attach (ptid_t ptid); | |
61bb466e | 156 | |
6a3cb8e8 | 157 | /* These two globals are only ever set in procfs_open_1, but are |
61bb466e KW |
158 | referenced elsewhere. 'nto_procfs_node' is a flag used to say |
159 | whether we are local, or we should get the current node descriptor | |
160 | for the remote QNX node. */ | |
609c3040 | 161 | static char *nodestr; |
61bb466e KW |
162 | static unsigned nto_procfs_node = ND_LOCAL_NODE; |
163 | ||
164 | /* Return the current QNX Node, or error out. This is a simple | |
165 | wrapper for the netmgr_strtond() function. The reason this | |
166 | is required is because QNX node descriptors are transient so | |
167 | we have to re-acquire them every time. */ | |
168 | static unsigned | |
d737fd7f | 169 | nto_node (void) |
61bb466e KW |
170 | { |
171 | unsigned node; | |
172 | ||
609c3040 AR |
173 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 |
174 | || nodestr == NULL) | |
61bb466e KW |
175 | return ND_LOCAL_NODE; |
176 | ||
609c3040 | 177 | node = netmgr_strtond (nodestr, 0); |
61bb466e | 178 | if (node == -1) |
8a3fe4f8 | 179 | error (_("Lost the QNX node. Debug session probably over.")); |
61bb466e KW |
180 | |
181 | return (node); | |
182 | } | |
183 | ||
d737fd7f KW |
184 | static enum gdb_osabi |
185 | procfs_is_nto_target (bfd *abfd) | |
186 | { | |
187 | return GDB_OSABI_QNXNTO; | |
188 | } | |
189 | ||
6a3cb8e8 PA |
190 | /* This is called when we call 'target native' or 'target procfs |
191 | <arg>' from the (gdb) prompt. For QNX6 (nto), the only valid arg | |
192 | will be a QNX node string, eg: "/net/some_node". If arg is not a | |
193 | valid QNX node, we will default to local. */ | |
f6ac5f3d PA |
194 | void |
195 | nto_procfs_target::open (const char *arg, int from_tty) | |
61bb466e | 196 | { |
61bb466e KW |
197 | char *endstr; |
198 | char buffer[50]; | |
5dc1a704 | 199 | int total_size; |
61bb466e | 200 | procfs_sysinfo *sysinfo; |
609c3040 | 201 | char nto_procfs_path[PATH_MAX]; |
61bb466e | 202 | |
6a3cb8e8 PA |
203 | /* Offer to kill previous inferiors before opening this target. */ |
204 | target_preopen (from_tty); | |
205 | ||
d737fd7f KW |
206 | nto_is_nto_target = procfs_is_nto_target; |
207 | ||
61bb466e KW |
208 | /* Set the default node used for spawning to this one, |
209 | and only override it if there is a valid arg. */ | |
210 | ||
609c3040 AR |
211 | xfree (nodestr); |
212 | nodestr = NULL; | |
213 | ||
61bb466e | 214 | nto_procfs_node = ND_LOCAL_NODE; |
609c3040 | 215 | nodestr = (arg != NULL) ? xstrdup (arg) : NULL; |
61bb466e KW |
216 | |
217 | init_thread_list (); | |
218 | ||
219 | if (nodestr) | |
220 | { | |
221 | nto_procfs_node = netmgr_strtond (nodestr, &endstr); | |
222 | if (nto_procfs_node == -1) | |
223 | { | |
224 | if (errno == ENOTSUP) | |
225 | printf_filtered ("QNX Net Manager not found.\n"); | |
226 | printf_filtered ("Invalid QNX node %s: error %d (%s).\n", nodestr, | |
dc5dd1eb | 227 | errno, safe_strerror (errno)); |
61bb466e KW |
228 | xfree (nodestr); |
229 | nodestr = NULL; | |
230 | nto_procfs_node = ND_LOCAL_NODE; | |
231 | } | |
232 | else if (*endstr) | |
233 | { | |
234 | if (*(endstr - 1) == '/') | |
235 | *(endstr - 1) = 0; | |
236 | else | |
237 | *endstr = 0; | |
238 | } | |
239 | } | |
609c3040 AR |
240 | snprintf (nto_procfs_path, PATH_MAX - 1, "%s%s", |
241 | (nodestr != NULL) ? nodestr : "", "/proc"); | |
61bb466e | 242 | |
5dc1a704 TT |
243 | scoped_fd fd (open (nto_procfs_path, O_RDONLY)); |
244 | if (fd.get () == -1) | |
61bb466e KW |
245 | { |
246 | printf_filtered ("Error opening %s : %d (%s)\n", nto_procfs_path, errno, | |
dc5dd1eb | 247 | safe_strerror (errno)); |
8a3fe4f8 | 248 | error (_("Invalid procfs arg")); |
61bb466e KW |
249 | } |
250 | ||
251 | sysinfo = (void *) buffer; | |
5dc1a704 | 252 | if (devctl (fd.get (), DCMD_PROC_SYSINFO, sysinfo, sizeof buffer, 0) != EOK) |
61bb466e KW |
253 | { |
254 | printf_filtered ("Error getting size: %d (%s)\n", errno, | |
dc5dd1eb | 255 | safe_strerror (errno)); |
8a3fe4f8 | 256 | error (_("Devctl failed.")); |
61bb466e KW |
257 | } |
258 | else | |
259 | { | |
260 | total_size = sysinfo->total_size; | |
261 | sysinfo = alloca (total_size); | |
609c3040 | 262 | if (sysinfo == NULL) |
61bb466e KW |
263 | { |
264 | printf_filtered ("Memory error: %d (%s)\n", errno, | |
dc5dd1eb | 265 | safe_strerror (errno)); |
8a3fe4f8 | 266 | error (_("alloca failed.")); |
61bb466e KW |
267 | } |
268 | else | |
269 | { | |
5dc1a704 TT |
270 | if (devctl (fd.get (), DCMD_PROC_SYSINFO, sysinfo, total_size, 0) |
271 | != EOK) | |
61bb466e KW |
272 | { |
273 | printf_filtered ("Error getting sysinfo: %d (%s)\n", errno, | |
dc5dd1eb | 274 | safe_strerror (errno)); |
8a3fe4f8 | 275 | error (_("Devctl failed.")); |
61bb466e KW |
276 | } |
277 | else | |
278 | { | |
279 | if (sysinfo->type != | |
1143fffb | 280 | nto_map_arch_to_cputype (gdbarch_bfd_arch_info |
f5656ead | 281 | (target_gdbarch ())->arch_name)) |
9fe4a216 | 282 | error (_("Invalid target CPU.")); |
61bb466e KW |
283 | } |
284 | } | |
285 | } | |
6a3cb8e8 | 286 | |
f6ac5f3d | 287 | inf_child_target::open (arg, from_tty); |
61bb466e KW |
288 | printf_filtered ("Debugging using %s\n", nto_procfs_path); |
289 | } | |
290 | ||
291 | static void | |
292 | procfs_set_thread (ptid_t ptid) | |
293 | { | |
294 | pid_t tid; | |
295 | ||
296 | tid = ptid_get_tid (ptid); | |
297 | devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0); | |
298 | } | |
299 | ||
300 | /* Return nonzero if the thread TH is still alive. */ | |
f6ac5f3d PA |
301 | int |
302 | nto_procfs_target::thread_alive (ptid_t ptid) | |
61bb466e KW |
303 | { |
304 | pid_t tid; | |
745a434e AR |
305 | pid_t pid; |
306 | procfs_status status; | |
307 | int err; | |
61bb466e KW |
308 | |
309 | tid = ptid_get_tid (ptid); | |
745a434e AR |
310 | pid = ptid_get_pid (ptid); |
311 | ||
312 | if (kill (pid, 0) == -1) | |
313 | return 0; | |
314 | ||
315 | status.tid = tid; | |
316 | if ((err = devctl (ctl_fd, DCMD_PROC_TIDSTATUS, | |
317 | &status, sizeof (status), 0)) != EOK) | |
318 | return 0; | |
319 | ||
320 | /* Thread is alive or dead but not yet joined, | |
321 | or dead and there is an alive (or dead unjoined) thread with | |
322 | higher tid. | |
323 | ||
324 | If the tid is not the same as requested, requested tid is dead. */ | |
325 | return (status.tid == tid) && (status.state != STATE_DEAD); | |
326 | } | |
327 | ||
328 | static void | |
329 | update_thread_private_data_name (struct thread_info *new_thread, | |
330 | const char *newname) | |
331 | { | |
7aabaf9d | 332 | nto_thread_info *pti = get_nto_thread_info (new_thread); |
745a434e AR |
333 | |
334 | gdb_assert (newname != NULL); | |
335 | gdb_assert (new_thread != NULL); | |
7aabaf9d SM |
336 | |
337 | if (pti) | |
745a434e | 338 | { |
7aabaf9d SM |
339 | pti = new nto_thread_info; |
340 | new_thread->priv.reset (pti); | |
745a434e | 341 | } |
7aabaf9d SM |
342 | |
343 | pti->name = newname; | |
745a434e AR |
344 | } |
345 | ||
346 | static void | |
347 | update_thread_private_data (struct thread_info *new_thread, | |
348 | pthread_t tid, int state, int flags) | |
349 | { | |
745a434e AR |
350 | procfs_info pidinfo; |
351 | struct _thread_name *tn; | |
352 | procfs_threadctl tctl; | |
353 | ||
354 | #if _NTO_VERSION > 630 | |
355 | gdb_assert (new_thread != NULL); | |
356 | ||
357 | if (devctl (ctl_fd, DCMD_PROC_INFO, &pidinfo, | |
358 | sizeof(pidinfo), 0) != EOK) | |
359 | return; | |
360 | ||
361 | memset (&tctl, 0, sizeof (tctl)); | |
362 | tctl.cmd = _NTO_TCTL_NAME; | |
363 | tn = (struct _thread_name *) (&tctl.data); | |
364 | ||
365 | /* Fetch name for the given thread. */ | |
366 | tctl.tid = tid; | |
367 | tn->name_buf_len = sizeof (tctl.data) - sizeof (*tn); | |
368 | tn->new_name_len = -1; /* Getting, not setting. */ | |
369 | if (devctl (ctl_fd, DCMD_PROC_THREADCTL, &tctl, sizeof (tctl), NULL) != EOK) | |
370 | tn->name_buf[0] = '\0'; | |
371 | ||
372 | tn->name_buf[_NTO_THREAD_NAME_MAX] = '\0'; | |
373 | ||
374 | update_thread_private_data_name (new_thread, tn->name_buf); | |
375 | ||
7aabaf9d | 376 | nto_thread_info *pti = get_nto_thread_info (new_thread); |
745a434e AR |
377 | pti->tid = tid; |
378 | pti->state = state; | |
379 | pti->flags = flags; | |
380 | #endif /* _NTO_VERSION */ | |
61bb466e KW |
381 | } |
382 | ||
f6ac5f3d PA |
383 | void |
384 | nto_procfs_target::update_thread_list () | |
61bb466e KW |
385 | { |
386 | procfs_status status; | |
387 | pid_t pid; | |
388 | ptid_t ptid; | |
745a434e AR |
389 | pthread_t tid; |
390 | struct thread_info *new_thread; | |
61bb466e KW |
391 | |
392 | if (ctl_fd == -1) | |
393 | return; | |
394 | ||
e8032dde PA |
395 | prune_threads (); |
396 | ||
61bb466e KW |
397 | pid = ptid_get_pid (inferior_ptid); |
398 | ||
745a434e AR |
399 | status.tid = 1; |
400 | ||
401 | for (tid = 1;; ++tid) | |
61bb466e | 402 | { |
745a434e AR |
403 | if (status.tid == tid |
404 | && (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0) | |
405 | != EOK)) | |
61bb466e | 406 | break; |
745a434e AR |
407 | if (status.tid != tid) |
408 | /* The reason why this would not be equal is that devctl might have | |
409 | returned different tid, meaning the requested tid no longer exists | |
410 | (e.g. thread exited). */ | |
411 | continue; | |
412 | ptid = ptid_build (pid, 0, tid); | |
413 | new_thread = find_thread_ptid (ptid); | |
414 | if (!new_thread) | |
415 | new_thread = add_thread (ptid); | |
416 | update_thread_private_data (new_thread, tid, status.state, 0); | |
417 | status.tid++; | |
61bb466e KW |
418 | } |
419 | return; | |
420 | } | |
421 | ||
9fe4a216 TT |
422 | static void |
423 | do_closedir_cleanup (void *dir) | |
424 | { | |
425 | closedir (dir); | |
426 | } | |
427 | ||
774ee6d2 | 428 | static void |
1d12d88f | 429 | procfs_pidlist (const char *args, int from_tty) |
61bb466e KW |
430 | { |
431 | DIR *dp = NULL; | |
432 | struct dirent *dirp = NULL; | |
609c3040 | 433 | char buf[PATH_MAX]; |
61bb466e KW |
434 | procfs_info *pidinfo = NULL; |
435 | procfs_debuginfo *info = NULL; | |
436 | procfs_status *status = NULL; | |
437 | pid_t num_threads = 0; | |
438 | pid_t pid; | |
439 | char name[512]; | |
9fe4a216 | 440 | struct cleanup *cleanups; |
609c3040 | 441 | char procfs_dir[PATH_MAX]; |
61bb466e | 442 | |
609c3040 AR |
443 | snprintf (procfs_dir, sizeof (procfs_dir), "%s%s", |
444 | (nodestr != NULL) ? nodestr : "", "/proc"); | |
445 | ||
446 | dp = opendir (procfs_dir); | |
61bb466e KW |
447 | if (dp == NULL) |
448 | { | |
dc5dd1eb | 449 | fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)", |
609c3040 | 450 | procfs_dir, errno, safe_strerror (errno)); |
61bb466e KW |
451 | return; |
452 | } | |
453 | ||
9fe4a216 TT |
454 | cleanups = make_cleanup (do_closedir_cleanup, dp); |
455 | ||
61bb466e KW |
456 | /* Start scan at first pid. */ |
457 | rewinddir (dp); | |
458 | ||
459 | do | |
460 | { | |
461 | /* Get the right pid and procfs path for the pid. */ | |
462 | do | |
463 | { | |
464 | dirp = readdir (dp); | |
465 | if (dirp == NULL) | |
466 | { | |
9fe4a216 | 467 | do_cleanups (cleanups); |
61bb466e KW |
468 | return; |
469 | } | |
609c3040 AR |
470 | snprintf (buf, sizeof (buf), "%s%s/%s/as", |
471 | (nodestr != NULL) ? nodestr : "", | |
472 | "/proc", dirp->d_name); | |
61bb466e KW |
473 | pid = atoi (dirp->d_name); |
474 | } | |
475 | while (pid == 0); | |
476 | ||
0df8b418 | 477 | /* Open the procfs path. */ |
5dc1a704 TT |
478 | scoped_fd fd (open (buf, O_RDONLY)); |
479 | if (fd.get () == -1) | |
61bb466e | 480 | { |
dc5dd1eb | 481 | fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n", |
d737fd7f | 482 | buf, errno, safe_strerror (errno)); |
609c3040 | 483 | continue; |
61bb466e KW |
484 | } |
485 | ||
486 | pidinfo = (procfs_info *) buf; | |
5dc1a704 | 487 | if (devctl (fd.get (), DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK) |
61bb466e | 488 | { |
dc5dd1eb | 489 | fprintf_unfiltered (gdb_stderr, |
d737fd7f KW |
490 | "devctl DCMD_PROC_INFO failed - %d (%s)\n", |
491 | errno, safe_strerror (errno)); | |
61bb466e KW |
492 | break; |
493 | } | |
494 | num_threads = pidinfo->num_threads; | |
495 | ||
496 | info = (procfs_debuginfo *) buf; | |
5dc1a704 TT |
497 | if (devctl (fd.get (), DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0) |
498 | != EOK) | |
61bb466e KW |
499 | strcpy (name, "unavailable"); |
500 | else | |
501 | strcpy (name, info->path); | |
502 | ||
503 | /* Collect state info on all the threads. */ | |
504 | status = (procfs_status *) buf; | |
505 | for (status->tid = 1; status->tid <= num_threads; status->tid++) | |
506 | { | |
609c3040 | 507 | const int err |
5dc1a704 | 508 | = devctl (fd.get (), DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0); |
609c3040 AR |
509 | printf_filtered ("%s - %d", name, pid); |
510 | if (err == EOK && status->tid != 0) | |
511 | printf_filtered ("/%d\n", status->tid); | |
512 | else | |
513 | { | |
514 | printf_filtered ("\n"); | |
515 | break; | |
516 | } | |
61bb466e | 517 | } |
61bb466e KW |
518 | } |
519 | while (dirp != NULL); | |
520 | ||
9fe4a216 | 521 | do_cleanups (cleanups); |
61bb466e KW |
522 | return; |
523 | } | |
524 | ||
774ee6d2 | 525 | static void |
1d12d88f | 526 | procfs_meminfo (const char *args, int from_tty) |
61bb466e KW |
527 | { |
528 | procfs_mapinfo *mapinfos = NULL; | |
529 | static int num_mapinfos = 0; | |
530 | procfs_mapinfo *mapinfo_p, *mapinfo_p2; | |
531 | int flags = ~0, err, num, i, j; | |
532 | ||
533 | struct | |
534 | { | |
535 | procfs_debuginfo info; | |
536 | char buff[_POSIX_PATH_MAX]; | |
537 | } map; | |
538 | ||
539 | struct info | |
540 | { | |
541 | unsigned addr; | |
542 | unsigned size; | |
543 | unsigned flags; | |
544 | unsigned debug_vaddr; | |
545 | unsigned long long offset; | |
546 | }; | |
547 | ||
548 | struct printinfo | |
549 | { | |
550 | unsigned long long ino; | |
551 | unsigned dev; | |
552 | struct info text; | |
553 | struct info data; | |
554 | char name[256]; | |
555 | } printme; | |
556 | ||
557 | /* Get the number of map entrys. */ | |
558 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num); | |
559 | if (err != EOK) | |
560 | { | |
d737fd7f KW |
561 | printf ("failed devctl num mapinfos - %d (%s)\n", err, |
562 | safe_strerror (err)); | |
61bb466e KW |
563 | return; |
564 | } | |
565 | ||
774ee6d2 | 566 | mapinfos = XNEWVEC (procfs_mapinfo, num); |
61bb466e KW |
567 | |
568 | num_mapinfos = num; | |
569 | mapinfo_p = mapinfos; | |
570 | ||
571 | /* Fill the map entrys. */ | |
572 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, mapinfo_p, num | |
573 | * sizeof (procfs_mapinfo), &num); | |
574 | if (err != EOK) | |
575 | { | |
5483d879 | 576 | printf ("failed devctl mapinfos - %d (%s)\n", err, safe_strerror (err)); |
61bb466e KW |
577 | xfree (mapinfos); |
578 | return; | |
579 | } | |
580 | ||
325fac50 | 581 | num = std::min (num, num_mapinfos); |
61bb466e KW |
582 | |
583 | /* Run through the list of mapinfos, and store the data and text info | |
584 | so we can print it at the bottom of the loop. */ | |
585 | for (mapinfo_p = mapinfos, i = 0; i < num; i++, mapinfo_p++) | |
586 | { | |
587 | if (!(mapinfo_p->flags & flags)) | |
588 | mapinfo_p->ino = 0; | |
589 | ||
590 | if (mapinfo_p->ino == 0) /* Already visited. */ | |
591 | continue; | |
592 | ||
593 | map.info.vaddr = mapinfo_p->vaddr; | |
594 | ||
595 | err = devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
596 | if (err != EOK) | |
597 | continue; | |
598 | ||
599 | memset (&printme, 0, sizeof printme); | |
600 | printme.dev = mapinfo_p->dev; | |
601 | printme.ino = mapinfo_p->ino; | |
602 | printme.text.addr = mapinfo_p->vaddr; | |
603 | printme.text.size = mapinfo_p->size; | |
604 | printme.text.flags = mapinfo_p->flags; | |
605 | printme.text.offset = mapinfo_p->offset; | |
606 | printme.text.debug_vaddr = map.info.vaddr; | |
607 | strcpy (printme.name, map.info.path); | |
608 | ||
609 | /* Check for matching data. */ | |
610 | for (mapinfo_p2 = mapinfos, j = 0; j < num; j++, mapinfo_p2++) | |
611 | { | |
612 | if (mapinfo_p2->vaddr != mapinfo_p->vaddr | |
613 | && mapinfo_p2->ino == mapinfo_p->ino | |
614 | && mapinfo_p2->dev == mapinfo_p->dev) | |
615 | { | |
616 | map.info.vaddr = mapinfo_p2->vaddr; | |
617 | err = | |
618 | devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
619 | if (err != EOK) | |
620 | continue; | |
621 | ||
622 | if (strcmp (map.info.path, printme.name)) | |
623 | continue; | |
624 | ||
625 | /* Lower debug_vaddr is always text, if nessessary, swap. */ | |
626 | if ((int) map.info.vaddr < (int) printme.text.debug_vaddr) | |
627 | { | |
628 | memcpy (&(printme.data), &(printme.text), | |
629 | sizeof (printme.data)); | |
630 | printme.text.addr = mapinfo_p2->vaddr; | |
631 | printme.text.size = mapinfo_p2->size; | |
632 | printme.text.flags = mapinfo_p2->flags; | |
633 | printme.text.offset = mapinfo_p2->offset; | |
634 | printme.text.debug_vaddr = map.info.vaddr; | |
635 | } | |
636 | else | |
637 | { | |
638 | printme.data.addr = mapinfo_p2->vaddr; | |
639 | printme.data.size = mapinfo_p2->size; | |
640 | printme.data.flags = mapinfo_p2->flags; | |
641 | printme.data.offset = mapinfo_p2->offset; | |
642 | printme.data.debug_vaddr = map.info.vaddr; | |
643 | } | |
644 | mapinfo_p2->ino = 0; | |
645 | } | |
646 | } | |
647 | mapinfo_p->ino = 0; | |
648 | ||
649 | printf_filtered ("%s\n", printme.name); | |
650 | printf_filtered ("\ttext=%08x bytes @ 0x%08x\n", printme.text.size, | |
651 | printme.text.addr); | |
652 | printf_filtered ("\t\tflags=%08x\n", printme.text.flags); | |
653 | printf_filtered ("\t\tdebug=%08x\n", printme.text.debug_vaddr); | |
2244ba2e | 654 | printf_filtered ("\t\toffset=%s\n", phex (printme.text.offset, 8)); |
61bb466e KW |
655 | if (printme.data.size) |
656 | { | |
657 | printf_filtered ("\tdata=%08x bytes @ 0x%08x\n", printme.data.size, | |
658 | printme.data.addr); | |
659 | printf_filtered ("\t\tflags=%08x\n", printme.data.flags); | |
660 | printf_filtered ("\t\tdebug=%08x\n", printme.data.debug_vaddr); | |
2244ba2e | 661 | printf_filtered ("\t\toffset=%s\n", phex (printme.data.offset, 8)); |
61bb466e KW |
662 | } |
663 | printf_filtered ("\tdev=0x%x\n", printme.dev); | |
664 | printf_filtered ("\tino=0x%x\n", (unsigned int) printme.ino); | |
665 | } | |
666 | xfree (mapinfos); | |
667 | return; | |
668 | } | |
669 | ||
670 | /* Print status information about what we're accessing. */ | |
f6ac5f3d PA |
671 | void |
672 | nto_procfs_target::files_info () | |
61bb466e | 673 | { |
181e7f93 PA |
674 | struct inferior *inf = current_inferior (); |
675 | ||
61bb466e | 676 | printf_unfiltered ("\tUsing the running image of %s %s via %s.\n", |
3fdfcbf1 | 677 | inf->attach_flag ? "attached" : "child", |
609c3040 AR |
678 | target_pid_to_str (inferior_ptid), |
679 | (nodestr != NULL) ? nodestr : "local node"); | |
61bb466e KW |
680 | } |
681 | ||
e5343fde AR |
682 | /* Target to_pid_to_exec_file implementation. */ |
683 | ||
f6ac5f3d PA |
684 | char * |
685 | nto_procfs_target::pid_to_exec_file (const int pid) | |
e5343fde AR |
686 | { |
687 | int proc_fd; | |
688 | static char proc_path[PATH_MAX]; | |
689 | ssize_t rd; | |
690 | ||
691 | /* Read exe file name. */ | |
692 | snprintf (proc_path, sizeof (proc_path), "%s/proc/%d/exefile", | |
693 | (nodestr != NULL) ? nodestr : "", pid); | |
694 | proc_fd = open (proc_path, O_RDONLY); | |
695 | if (proc_fd == -1) | |
696 | return NULL; | |
697 | ||
698 | rd = read (proc_fd, proc_path, sizeof (proc_path) - 1); | |
699 | close (proc_fd); | |
700 | if (rd <= 0) | |
701 | { | |
702 | proc_path[0] = '\0'; | |
703 | return NULL; | |
704 | } | |
705 | proc_path[rd] = '\0'; | |
706 | return proc_path; | |
707 | } | |
708 | ||
61bb466e | 709 | /* Attach to process PID, then initialize for debugging it. */ |
f6ac5f3d PA |
710 | void |
711 | nto_procfs_target::attach (const char *args, int from_tty) | |
61bb466e KW |
712 | { |
713 | char *exec_file; | |
714 | int pid; | |
181e7f93 | 715 | struct inferior *inf; |
61bb466e | 716 | |
74164c56 | 717 | pid = parse_pid_to_attach (args); |
61bb466e KW |
718 | |
719 | if (pid == getpid ()) | |
8a3fe4f8 | 720 | error (_("Attaching GDB to itself is not a good idea...")); |
61bb466e KW |
721 | |
722 | if (from_tty) | |
723 | { | |
724 | exec_file = (char *) get_exec_file (0); | |
725 | ||
726 | if (exec_file) | |
727 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
728 | target_pid_to_str (pid_to_ptid (pid))); | |
729 | else | |
730 | printf_unfiltered ("Attaching to %s\n", | |
731 | target_pid_to_str (pid_to_ptid (pid))); | |
732 | ||
733 | gdb_flush (gdb_stdout); | |
734 | } | |
735 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
6c95b8df PA |
736 | inf = current_inferior (); |
737 | inferior_appeared (inf, pid); | |
181e7f93 | 738 | inf->attach_flag = 1; |
7f9f62ba | 739 | |
6a3cb8e8 PA |
740 | if (!target_is_pushed (ops)) |
741 | push_target (ops); | |
7f9f62ba | 742 | |
e8032dde | 743 | procfs_update_thread_list (ops); |
61bb466e KW |
744 | } |
745 | ||
f6ac5f3d PA |
746 | void |
747 | nto_procfs_target::post_attach (pid_t pid) | |
61bb466e | 748 | { |
61bb466e | 749 | if (exec_bfd) |
268a4a75 | 750 | solib_create_inferior_hook (0); |
61bb466e KW |
751 | } |
752 | ||
753 | static ptid_t | |
754 | do_attach (ptid_t ptid) | |
755 | { | |
756 | procfs_status status; | |
757 | struct sigevent event; | |
dc5dd1eb | 758 | char path[PATH_MAX]; |
61bb466e | 759 | |
609c3040 AR |
760 | snprintf (path, PATH_MAX - 1, "%s%s/%d/as", |
761 | (nodestr != NULL) ? nodestr : "", "/proc", ptid_get_pid (ptid)); | |
61bb466e KW |
762 | ctl_fd = open (path, O_RDWR); |
763 | if (ctl_fd == -1) | |
8a3fe4f8 | 764 | error (_("Couldn't open proc file %s, error %d (%s)"), path, errno, |
dc5dd1eb | 765 | safe_strerror (errno)); |
61bb466e | 766 | if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK) |
8a3fe4f8 | 767 | error (_("Couldn't stop process")); |
61bb466e KW |
768 | |
769 | /* Define a sigevent for process stopped notification. */ | |
770 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
771 | event.sigev_signo = SIGUSR1; | |
772 | event.sigev_code = 0; | |
773 | event.sigev_value.sival_ptr = NULL; | |
774 | event.sigev_priority = -1; | |
775 | devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0); | |
776 | ||
777 | if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK | |
778 | && status.flags & _DEBUG_FLAG_STOPPED) | |
dfd4cc63 | 779 | SignalKill (nto_node (), ptid_get_pid (ptid), 0, SIGCONT, 0, 0); |
61bb466e | 780 | nto_init_solib_absolute_prefix (); |
dfd4cc63 | 781 | return ptid_build (ptid_get_pid (ptid), 0, status.tid); |
61bb466e KW |
782 | } |
783 | ||
784 | /* Ask the user what to do when an interrupt is received. */ | |
785 | static void | |
dc5dd1eb | 786 | interrupt_query (void) |
61bb466e | 787 | { |
9e2f0ad4 HZ |
788 | if (query (_("Interrupted while waiting for the program.\n\ |
789 | Give up (and stop debugging it)? "))) | |
61bb466e | 790 | { |
bc1e6c81 | 791 | target_mourn_inferior (inferior_ptid); |
039e3c22 | 792 | quit (); |
61bb466e | 793 | } |
61bb466e KW |
794 | } |
795 | ||
796 | /* The user typed ^C twice. */ | |
797 | static void | |
bfedc46a | 798 | nto_handle_sigint_twice (int signo) |
61bb466e KW |
799 | { |
800 | signal (signo, ofunc); | |
801 | interrupt_query (); | |
bfedc46a | 802 | signal (signo, nto_handle_sigint_twice); |
61bb466e KW |
803 | } |
804 | ||
805 | static void | |
bfedc46a | 806 | nto_handle_sigint (int signo) |
61bb466e KW |
807 | { |
808 | /* If this doesn't work, try more severe steps. */ | |
bfedc46a | 809 | signal (signo, nto_handle_sigint_twice); |
61bb466e | 810 | |
e671cd59 | 811 | target_interrupt (); |
61bb466e KW |
812 | } |
813 | ||
f6ac5f3d PA |
814 | sptid_t |
815 | nto_procfs_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus, | |
816 | int options) | |
61bb466e KW |
817 | { |
818 | sigset_t set; | |
819 | siginfo_t info; | |
820 | procfs_status status; | |
821 | static int exit_signo = 0; /* To track signals that cause termination. */ | |
822 | ||
823 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
824 | ||
825 | if (ptid_equal (inferior_ptid, null_ptid)) | |
826 | { | |
827 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 828 | ourstatus->value.sig = GDB_SIGNAL_0; |
61bb466e KW |
829 | exit_signo = 0; |
830 | return null_ptid; | |
831 | } | |
832 | ||
833 | sigemptyset (&set); | |
834 | sigaddset (&set, SIGUSR1); | |
835 | ||
836 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
837 | while (!(status.flags & _DEBUG_FLAG_ISTOP)) | |
838 | { | |
a40805d4 | 839 | ofunc = signal (SIGINT, nto_handle_sigint); |
61bb466e KW |
840 | sigwaitinfo (&set, &info); |
841 | signal (SIGINT, ofunc); | |
842 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
843 | } | |
844 | ||
a9889169 AR |
845 | nto_inferior_data (NULL)->stopped_flags = status.flags; |
846 | nto_inferior_data (NULL)->stopped_pc = status.ip; | |
847 | ||
61bb466e KW |
848 | if (status.flags & _DEBUG_FLAG_SSTEP) |
849 | { | |
850 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 851 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
852 | } |
853 | /* Was it a breakpoint? */ | |
854 | else if (status.flags & _DEBUG_FLAG_TRACE) | |
855 | { | |
856 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 857 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
858 | } |
859 | else if (status.flags & _DEBUG_FLAG_ISTOP) | |
860 | { | |
861 | switch (status.why) | |
862 | { | |
863 | case _DEBUG_WHY_SIGNALLED: | |
864 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
865 | ourstatus->value.sig = | |
2ea28649 | 866 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
867 | exit_signo = 0; |
868 | break; | |
869 | case _DEBUG_WHY_FAULTED: | |
870 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
871 | if (status.info.si_signo == SIGTRAP) | |
872 | { | |
873 | ourstatus->value.sig = 0; | |
874 | exit_signo = 0; | |
875 | } | |
876 | else | |
877 | { | |
878 | ourstatus->value.sig = | |
2ea28649 | 879 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
880 | exit_signo = ourstatus->value.sig; |
881 | } | |
882 | break; | |
883 | ||
884 | case _DEBUG_WHY_TERMINATED: | |
885 | { | |
886 | int waitval = 0; | |
887 | ||
dfd4cc63 | 888 | waitpid (ptid_get_pid (inferior_ptid), &waitval, WNOHANG); |
61bb466e KW |
889 | if (exit_signo) |
890 | { | |
891 | /* Abnormal death. */ | |
892 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
893 | ourstatus->value.sig = exit_signo; | |
894 | } | |
895 | else | |
896 | { | |
897 | /* Normal death. */ | |
898 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
899 | ourstatus->value.integer = WEXITSTATUS (waitval); | |
900 | } | |
901 | exit_signo = 0; | |
902 | break; | |
903 | } | |
904 | ||
905 | case _DEBUG_WHY_REQUESTED: | |
906 | /* We are assuming a requested stop is due to a SIGINT. */ | |
907 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 908 | ourstatus->value.sig = GDB_SIGNAL_INT; |
61bb466e KW |
909 | exit_signo = 0; |
910 | break; | |
911 | } | |
912 | } | |
913 | ||
a6a7f2a5 | 914 | return ptid_build (status.pid, 0, status.tid); |
61bb466e KW |
915 | } |
916 | ||
917 | /* Read the current values of the inferior's registers, both the | |
918 | general register set and floating point registers (if supported) | |
919 | and update gdb's idea of their current values. */ | |
f6ac5f3d PA |
920 | void |
921 | nto_procfs_target::fetch_registers (struct regcache *regcache, int regno) | |
61bb466e KW |
922 | { |
923 | union | |
924 | { | |
925 | procfs_greg greg; | |
926 | procfs_fpreg fpreg; | |
927 | procfs_altreg altreg; | |
928 | } | |
929 | reg; | |
930 | int regsize; | |
931 | ||
bcc0c096 | 932 | procfs_set_thread (regcache_get_ptid (regcache)); |
61bb466e | 933 | if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK) |
56be3814 | 934 | nto_supply_gregset (regcache, (char *) ®.greg); |
61bb466e KW |
935 | if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size) |
936 | == EOK) | |
56be3814 | 937 | nto_supply_fpregset (regcache, (char *) ®.fpreg); |
61bb466e KW |
938 | if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size) |
939 | == EOK) | |
56be3814 | 940 | nto_supply_altregset (regcache, (char *) ®.altreg); |
61bb466e KW |
941 | } |
942 | ||
9d46c4e5 PA |
943 | /* Helper for procfs_xfer_partial that handles memory transfers. |
944 | Arguments are like target_xfer_partial. */ | |
61bb466e | 945 | |
9d46c4e5 PA |
946 | static enum target_xfer_status |
947 | procfs_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, | |
948 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
61bb466e | 949 | { |
9d46c4e5 PA |
950 | int nbytes; |
951 | ||
952 | if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) != (off_t) memaddr) | |
953 | return TARGET_XFER_E_IO; | |
954 | ||
955 | if (writebuf != NULL) | |
956 | nbytes = write (ctl_fd, writebuf, len); | |
957 | else | |
958 | nbytes = read (ctl_fd, readbuf, len); | |
959 | if (nbytes <= 0) | |
960 | return TARGET_XFER_E_IO; | |
961 | *xfered_len = nbytes; | |
962 | return TARGET_XFER_OK; | |
963 | } | |
964 | ||
965 | /* Target to_xfer_partial implementation. */ | |
61bb466e | 966 | |
f6ac5f3d PA |
967 | enum target_xfer_status |
968 | nto_procfs_target::xfer_partial (enum target_object object, | |
969 | const char *annex, gdb_byte *readbuf, | |
970 | const gdb_byte *writebuf, ULONGEST offset, | |
971 | ULONGEST len, ULONGEST *xfered_len) | |
9d46c4e5 PA |
972 | { |
973 | switch (object) | |
61bb466e | 974 | { |
9d46c4e5 PA |
975 | case TARGET_OBJECT_MEMORY: |
976 | return procfs_xfer_memory (readbuf, writebuf, offset, len, xfered_len); | |
8a6c0ccd AR |
977 | case TARGET_OBJECT_AUXV: |
978 | if (readbuf != NULL) | |
979 | { | |
980 | int err; | |
981 | CORE_ADDR initial_stack; | |
982 | debug_process_t procinfo; | |
983 | /* For 32-bit architecture, size of auxv_t is 8 bytes. */ | |
984 | const unsigned int sizeof_auxv_t = sizeof (auxv_t); | |
985 | const unsigned int sizeof_tempbuf = 20 * sizeof_auxv_t; | |
986 | int tempread; | |
987 | gdb_byte *const tempbuf = alloca (sizeof_tempbuf); | |
988 | ||
989 | if (tempbuf == NULL) | |
990 | return TARGET_XFER_E_IO; | |
991 | ||
992 | err = devctl (ctl_fd, DCMD_PROC_INFO, &procinfo, | |
993 | sizeof procinfo, 0); | |
994 | if (err != EOK) | |
995 | return TARGET_XFER_E_IO; | |
996 | ||
997 | initial_stack = procinfo.initial_stack; | |
998 | ||
999 | /* procfs is always 'self-hosted', no byte-order manipulation. */ | |
1000 | tempread = nto_read_auxv_from_initial_stack (initial_stack, tempbuf, | |
1001 | sizeof_tempbuf, | |
1002 | sizeof (auxv_t)); | |
325fac50 | 1003 | tempread = std::min (tempread, len) - offset; |
8a6c0ccd AR |
1004 | memcpy (readbuf, tempbuf + offset, tempread); |
1005 | *xfered_len = tempread; | |
1006 | return tempread ? TARGET_XFER_OK : TARGET_XFER_EOF; | |
1007 | } | |
1008 | /* Fallthru */ | |
9d46c4e5 | 1009 | default: |
f6ac5f3d PA |
1010 | return this->beneath->xfer_partial (object, annex, |
1011 | readbuf, writebuf, offset, len, | |
1012 | xfered_len); | |
61bb466e | 1013 | } |
61bb466e KW |
1014 | } |
1015 | ||
1016 | /* Take a program previously attached to and detaches it. | |
1017 | The program resumes execution and will no longer stop | |
1018 | on signals, etc. We'd better not have left any breakpoints | |
1019 | in the program or it'll die when it hits one. */ | |
f6ac5f3d PA |
1020 | void |
1021 | nto_procfs_target::detach (inferior *inf, int from_tty) | |
61bb466e | 1022 | { |
7f9f62ba | 1023 | int pid; |
61bb466e | 1024 | |
0f48b757 PA |
1025 | target_announce_detach (); |
1026 | ||
61bb466e | 1027 | if (siggnal) |
6bd6f3b6 | 1028 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, 0, 0, 0); |
61bb466e KW |
1029 | |
1030 | close (ctl_fd); | |
1031 | ctl_fd = -1; | |
7f9f62ba PA |
1032 | |
1033 | pid = ptid_get_pid (inferior_ptid); | |
61bb466e | 1034 | inferior_ptid = null_ptid; |
7f9f62ba PA |
1035 | detach_inferior (pid); |
1036 | init_thread_list (); | |
6a3cb8e8 | 1037 | inf_child_maybe_unpush_target (ops); |
61bb466e KW |
1038 | } |
1039 | ||
1040 | static int | |
1041 | procfs_breakpoint (CORE_ADDR addr, int type, int size) | |
1042 | { | |
1043 | procfs_break brk; | |
1044 | ||
1045 | brk.type = type; | |
1046 | brk.addr = addr; | |
1047 | brk.size = size; | |
1048 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1049 | if (errno != EOK) | |
1050 | return 1; | |
1051 | return 0; | |
1052 | } | |
1053 | ||
f6ac5f3d PA |
1054 | int |
1055 | nto_procfs_target::insert_breakpoint (struct gdbarch *gdbarch, | |
1056 | struct bp_target_info *bp_tgt) | |
61bb466e | 1057 | { |
0d5ed153 | 1058 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f | 1059 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, 0); |
61bb466e KW |
1060 | } |
1061 | ||
f6ac5f3d PA |
1062 | int |
1063 | nto_procfs_target::remove_breakpoint (struct gdbarch *gdbarch, | |
1064 | struct bp_target_info *bp_tgt, | |
1065 | enum remove_bp_reason reason) | |
61bb466e | 1066 | { |
8181d85f | 1067 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, -1); |
61bb466e KW |
1068 | } |
1069 | ||
f6ac5f3d PA |
1070 | int |
1071 | nto_procfs_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
1072 | struct bp_target_info *bp_tgt) | |
61bb466e | 1073 | { |
0d5ed153 | 1074 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f DJ |
1075 | return procfs_breakpoint (bp_tgt->placed_address, |
1076 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0); | |
61bb466e KW |
1077 | } |
1078 | ||
f6ac5f3d PA |
1079 | int |
1080 | nto_procfs_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
1081 | struct bp_target_info *bp_tgt) | |
61bb466e | 1082 | { |
8181d85f DJ |
1083 | return procfs_breakpoint (bp_tgt->placed_address, |
1084 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1); | |
61bb466e KW |
1085 | } |
1086 | ||
f6ac5f3d PA |
1087 | void |
1088 | nto_procfs_target::resume (ptid_t ptid, int step, enum gdb_signal signo) | |
61bb466e KW |
1089 | { |
1090 | int signal_to_pass; | |
1091 | procfs_status status; | |
14ef7606 | 1092 | sigset_t *run_fault = (sigset_t *) (void *) &run.fault; |
61bb466e KW |
1093 | |
1094 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1095 | return; | |
1096 | ||
1097 | procfs_set_thread (ptid_equal (ptid, minus_one_ptid) ? inferior_ptid : | |
1098 | ptid); | |
1099 | ||
1100 | run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE; | |
1101 | if (step) | |
1102 | run.flags |= _DEBUG_RUN_STEP; | |
1103 | ||
14ef7606 AR |
1104 | sigemptyset (run_fault); |
1105 | sigaddset (run_fault, FLTBPT); | |
1106 | sigaddset (run_fault, FLTTRACE); | |
1107 | sigaddset (run_fault, FLTILL); | |
1108 | sigaddset (run_fault, FLTPRIV); | |
1109 | sigaddset (run_fault, FLTBOUNDS); | |
1110 | sigaddset (run_fault, FLTIOVF); | |
1111 | sigaddset (run_fault, FLTIZDIV); | |
1112 | sigaddset (run_fault, FLTFPE); | |
61bb466e | 1113 | /* Peter V will be changing this at some point. */ |
14ef7606 | 1114 | sigaddset (run_fault, FLTPAGE); |
61bb466e KW |
1115 | |
1116 | run.flags |= _DEBUG_RUN_ARM; | |
1117 | ||
2ea28649 | 1118 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
1119 | |
1120 | if (signal_to_pass) | |
1121 | { | |
1122 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
2ea28649 | 1123 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
1124 | if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED)) |
1125 | { | |
1126 | if (signal_to_pass != status.info.si_signo) | |
1127 | { | |
dfd4cc63 | 1128 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, |
d737fd7f | 1129 | signal_to_pass, 0, 0); |
61bb466e KW |
1130 | run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG; |
1131 | } | |
0df8b418 | 1132 | else /* Let it kill the program without telling us. */ |
61bb466e KW |
1133 | sigdelset (&run.trace, signal_to_pass); |
1134 | } | |
1135 | } | |
1136 | else | |
1137 | run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT; | |
1138 | ||
1139 | errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0); | |
1140 | if (errno != EOK) | |
1141 | { | |
9b20d036 | 1142 | perror (_("run error!\n")); |
61bb466e KW |
1143 | return; |
1144 | } | |
1145 | } | |
1146 | ||
f6ac5f3d PA |
1147 | void |
1148 | nto_procfs_target::mourn_inferior () | |
61bb466e KW |
1149 | { |
1150 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
1151 | { | |
dfd4cc63 | 1152 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, SIGKILL, 0, 0); |
61bb466e KW |
1153 | close (ctl_fd); |
1154 | } | |
1155 | inferior_ptid = null_ptid; | |
1156 | init_thread_list (); | |
c1ee2fb3 | 1157 | inf_child_mourn_inferior (ops); |
61bb466e KW |
1158 | } |
1159 | ||
1160 | /* This function breaks up an argument string into an argument | |
1161 | vector suitable for passing to execvp(). | |
1162 | E.g., on "run a b c d" this routine would get as input | |
1163 | the string "a b c d", and as output it would fill in argv with | |
1164 | the four arguments "a", "b", "c", "d". The only additional | |
1165 | functionality is simple quoting. The gdb command: | |
1166 | run a "b c d" f | |
1167 | will fill in argv with the three args "a", "b c d", "e". */ | |
1168 | static void | |
1169 | breakup_args (char *scratch, char **argv) | |
1170 | { | |
1171 | char *pp, *cp = scratch; | |
1172 | char quoting = 0; | |
1173 | ||
1174 | for (;;) | |
1175 | { | |
1176 | /* Scan past leading separators. */ | |
1177 | quoting = 0; | |
1178 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') | |
1179 | cp++; | |
1180 | ||
1181 | /* Break if at end of string. */ | |
1182 | if (*cp == '\0') | |
1183 | break; | |
1184 | ||
1185 | /* Take an arg. */ | |
1186 | if (*cp == '"') | |
1187 | { | |
1188 | cp++; | |
1189 | quoting = strchr (cp, '"') ? 1 : 0; | |
1190 | } | |
1191 | ||
1192 | *argv++ = cp; | |
1193 | ||
1194 | /* Scan for next arg separator. */ | |
1195 | pp = cp; | |
1196 | if (quoting) | |
1197 | cp = strchr (pp, '"'); | |
1198 | if ((cp == NULL) || (!quoting)) | |
1199 | cp = strchr (pp, ' '); | |
1200 | if (cp == NULL) | |
1201 | cp = strchr (pp, '\t'); | |
1202 | if (cp == NULL) | |
1203 | cp = strchr (pp, '\n'); | |
1204 | ||
1205 | /* No separators => end of string => break. */ | |
1206 | if (cp == NULL) | |
1207 | { | |
1208 | pp = cp; | |
1209 | break; | |
1210 | } | |
1211 | ||
1212 | /* Replace the separator with a terminator. */ | |
1213 | *cp++ = '\0'; | |
1214 | } | |
1215 | ||
1216 | /* Execv requires a null-terminated arg vector. */ | |
1217 | *argv = NULL; | |
1218 | } | |
1219 | ||
f6ac5f3d PA |
1220 | void |
1221 | nto_procfs_target::create_inferior (const char *exec_file, | |
1222 | const std::string &allargs, | |
1223 | char **env, int from_tty) | |
61bb466e KW |
1224 | { |
1225 | struct inheritance inherit; | |
1226 | pid_t pid; | |
1227 | int flags, errn; | |
1228 | char **argv, *args; | |
3cb3b8df | 1229 | const char *in = "", *out = "", *err = ""; |
61bb466e KW |
1230 | int fd, fds[3]; |
1231 | sigset_t set; | |
3cb3b8df | 1232 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
3fdfcbf1 | 1233 | struct inferior *inf; |
61bb466e | 1234 | |
7c5ded6a | 1235 | argv = xmalloc ((allargs.size () / (unsigned) 2 + 2) * |
61bb466e KW |
1236 | sizeof (*argv)); |
1237 | argv[0] = get_exec_file (1); | |
1238 | if (!argv[0]) | |
1239 | { | |
1240 | if (exec_file) | |
1241 | argv[0] = exec_file; | |
1242 | else | |
1243 | return; | |
1244 | } | |
1245 | ||
7c5ded6a | 1246 | args = xstrdup (allargs.c_str ()); |
609c3040 | 1247 | breakup_args (args, (exec_file != NULL) ? &argv[1] : &argv[0]); |
61bb466e KW |
1248 | |
1249 | argv = nto_parse_redirection (argv, &in, &out, &err); | |
1250 | ||
1251 | fds[0] = STDIN_FILENO; | |
1252 | fds[1] = STDOUT_FILENO; | |
1253 | fds[2] = STDERR_FILENO; | |
1254 | ||
1255 | /* If the user specified I/O via gdb's --tty= arg, use it, but only | |
1256 | if the i/o is not also being specified via redirection. */ | |
1257 | if (inferior_io_terminal) | |
1258 | { | |
1259 | if (!in[0]) | |
1260 | in = inferior_io_terminal; | |
1261 | if (!out[0]) | |
1262 | out = inferior_io_terminal; | |
1263 | if (!err[0]) | |
1264 | err = inferior_io_terminal; | |
1265 | } | |
1266 | ||
1267 | if (in[0]) | |
1268 | { | |
1269 | fd = open (in, O_RDONLY); | |
1270 | if (fd == -1) | |
1271 | perror (in); | |
1272 | else | |
1273 | fds[0] = fd; | |
1274 | } | |
1275 | if (out[0]) | |
1276 | { | |
1277 | fd = open (out, O_WRONLY); | |
1278 | if (fd == -1) | |
1279 | perror (out); | |
1280 | else | |
1281 | fds[1] = fd; | |
1282 | } | |
1283 | if (err[0]) | |
1284 | { | |
1285 | fd = open (err, O_WRONLY); | |
1286 | if (fd == -1) | |
1287 | perror (err); | |
1288 | else | |
1289 | fds[2] = fd; | |
1290 | } | |
1291 | ||
1292 | /* Clear any pending SIGUSR1's but keep the behavior the same. */ | |
1293 | signal (SIGUSR1, signal (SIGUSR1, SIG_IGN)); | |
1294 | ||
1295 | sigemptyset (&set); | |
1296 | sigaddset (&set, SIGUSR1); | |
1297 | sigprocmask (SIG_UNBLOCK, &set, NULL); | |
1298 | ||
1299 | memset (&inherit, 0, sizeof (inherit)); | |
1300 | ||
1301 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0) | |
1302 | { | |
d737fd7f | 1303 | inherit.nd = nto_node (); |
61bb466e KW |
1304 | inherit.flags |= SPAWN_SETND; |
1305 | inherit.flags &= ~SPAWN_EXEC; | |
1306 | } | |
1307 | inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD; | |
1308 | inherit.pgroup = SPAWN_NEWPGROUP; | |
1309 | pid = spawnp (argv[0], 3, fds, &inherit, argv, | |
1310 | ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0); | |
1311 | xfree (args); | |
1312 | ||
1313 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1314 | ||
1315 | if (pid == -1) | |
8a3fe4f8 | 1316 | error (_("Error spawning %s: %d (%s)"), argv[0], errno, |
d737fd7f | 1317 | safe_strerror (errno)); |
61bb466e KW |
1318 | |
1319 | if (fds[0] != STDIN_FILENO) | |
1320 | close (fds[0]); | |
1321 | if (fds[1] != STDOUT_FILENO) | |
1322 | close (fds[1]); | |
1323 | if (fds[2] != STDERR_FILENO) | |
1324 | close (fds[2]); | |
1325 | ||
1326 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
e8032dde | 1327 | procfs_update_thread_list (ops); |
61bb466e | 1328 | |
6c95b8df PA |
1329 | inf = current_inferior (); |
1330 | inferior_appeared (inf, pid); | |
3fdfcbf1 | 1331 | inf->attach_flag = 0; |
7f9f62ba | 1332 | |
61bb466e KW |
1333 | flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */ |
1334 | errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0); | |
1335 | if (errn != EOK) | |
1336 | { | |
1337 | /* FIXME: expected warning? */ | |
1338 | /* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n", | |
1339 | errn, strerror(errn) ); */ | |
1340 | } | |
6a3cb8e8 PA |
1341 | if (!target_is_pushed (ops)) |
1342 | push_target (ops); | |
223ffa71 | 1343 | target_terminal::init (); |
61bb466e | 1344 | |
61bb466e KW |
1345 | if (exec_bfd != NULL |
1346 | || (symfile_objfile != NULL && symfile_objfile->obfd != NULL)) | |
268a4a75 | 1347 | solib_create_inferior_hook (0); |
61bb466e KW |
1348 | } |
1349 | ||
f6ac5f3d PA |
1350 | void |
1351 | nto_procfs_target::interrupt () | |
61bb466e KW |
1352 | { |
1353 | devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0); | |
1354 | } | |
1355 | ||
f6ac5f3d PA |
1356 | void |
1357 | nto_procfs_target::kill () | |
61bb466e | 1358 | { |
bc1e6c81 | 1359 | target_mourn_inferior (inferior_ptid); |
61bb466e KW |
1360 | } |
1361 | ||
61bb466e KW |
1362 | /* Fill buf with regset and return devctl cmd to do the setting. Return |
1363 | -1 if we fail to get the regset. Store size of regset in regsize. */ | |
1364 | static int | |
1365 | get_regset (int regset, char *buf, int bufsize, int *regsize) | |
1366 | { | |
1367 | int dev_get, dev_set; | |
1368 | switch (regset) | |
1369 | { | |
1370 | case NTO_REG_GENERAL: | |
1371 | dev_get = DCMD_PROC_GETGREG; | |
1372 | dev_set = DCMD_PROC_SETGREG; | |
1373 | break; | |
1374 | ||
1375 | case NTO_REG_FLOAT: | |
1376 | dev_get = DCMD_PROC_GETFPREG; | |
1377 | dev_set = DCMD_PROC_SETFPREG; | |
1378 | break; | |
1379 | ||
1380 | case NTO_REG_ALT: | |
1381 | dev_get = DCMD_PROC_GETALTREG; | |
1382 | dev_set = DCMD_PROC_SETALTREG; | |
1383 | break; | |
1384 | ||
1385 | case NTO_REG_SYSTEM: | |
1386 | default: | |
1387 | return -1; | |
1388 | } | |
97c44116 | 1389 | if (devctl (ctl_fd, dev_get, buf, bufsize, regsize) != EOK) |
61bb466e KW |
1390 | return -1; |
1391 | ||
1392 | return dev_set; | |
1393 | } | |
1394 | ||
f6ac5f3d PA |
1395 | void |
1396 | nto_procfs_target::store_registers (struct regcache *regcache, int regno) | |
61bb466e KW |
1397 | { |
1398 | union | |
1399 | { | |
1400 | procfs_greg greg; | |
1401 | procfs_fpreg fpreg; | |
1402 | procfs_altreg altreg; | |
1403 | } | |
1404 | reg; | |
1405 | unsigned off; | |
1406 | int len, regset, regsize, dev_set, err; | |
1407 | char *data; | |
bcc0c096 | 1408 | ptid_t ptid = regcache_get_ptid (regcache); |
61bb466e | 1409 | |
bcc0c096 | 1410 | if (ptid_equal (ptid, null_ptid)) |
61bb466e | 1411 | return; |
bcc0c096 | 1412 | procfs_set_thread (ptid); |
61bb466e KW |
1413 | |
1414 | if (regno == -1) | |
1415 | { | |
1416 | for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++) | |
1417 | { | |
1418 | dev_set = get_regset (regset, (char *) ®, | |
1419 | sizeof (reg), ®size); | |
1420 | if (dev_set == -1) | |
1421 | continue; | |
1422 | ||
56be3814 | 1423 | if (nto_regset_fill (regcache, regset, (char *) ®) == -1) |
61bb466e KW |
1424 | continue; |
1425 | ||
1426 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1427 | if (err != EOK) | |
1428 | fprintf_unfiltered (gdb_stderr, | |
1429 | "Warning unable to write regset %d: %s\n", | |
dc5dd1eb | 1430 | regno, safe_strerror (err)); |
61bb466e KW |
1431 | } |
1432 | } | |
1433 | else | |
1434 | { | |
1435 | regset = nto_regset_id (regno); | |
1436 | if (regset == -1) | |
1437 | return; | |
1438 | ||
1439 | dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size); | |
1440 | if (dev_set == -1) | |
1441 | return; | |
1442 | ||
ac7936df | 1443 | len = nto_register_area (regcache->arch (), |
60441ab9 | 1444 | regno, regset, &off); |
61bb466e KW |
1445 | |
1446 | if (len < 1) | |
1447 | return; | |
1448 | ||
56be3814 | 1449 | regcache_raw_collect (regcache, regno, (char *) ® + off); |
61bb466e KW |
1450 | |
1451 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1452 | if (err != EOK) | |
1453 | fprintf_unfiltered (gdb_stderr, | |
1454 | "Warning unable to write regset %d: %s\n", regno, | |
dc5dd1eb | 1455 | safe_strerror (err)); |
61bb466e KW |
1456 | } |
1457 | } | |
1458 | ||
2455069d UW |
1459 | /* Set list of signals to be handled in the target. */ |
1460 | ||
f6ac5f3d PA |
1461 | void |
1462 | nto_procfs_target::pass_signals (int numsigs, unsigned char *pass_signals) | |
61bb466e KW |
1463 | { |
1464 | int signo; | |
1465 | ||
2455069d UW |
1466 | sigfillset (&run.trace); |
1467 | ||
61bb466e KW |
1468 | for (signo = 1; signo < NSIG; signo++) |
1469 | { | |
2ea28649 | 1470 | int target_signo = gdb_signal_from_host (signo); |
2455069d UW |
1471 | if (target_signo < numsigs && pass_signals[target_signo]) |
1472 | sigdelset (&run.trace, signo); | |
61bb466e KW |
1473 | } |
1474 | } | |
1475 | ||
f6ac5f3d PA |
1476 | char * |
1477 | nto_procfs_target::pid_to_str (ptid_t ptid) | |
61bb466e KW |
1478 | { |
1479 | static char buf[1024]; | |
1480 | int pid, tid, n; | |
1481 | struct tidinfo *tip; | |
1482 | ||
1483 | pid = ptid_get_pid (ptid); | |
1484 | tid = ptid_get_tid (ptid); | |
1485 | ||
dc5dd1eb | 1486 | n = snprintf (buf, 1023, "process %d", pid); |
61bb466e KW |
1487 | |
1488 | #if 0 /* NYI */ | |
1489 | tip = procfs_thread_info (pid, tid); | |
1490 | if (tip != NULL) | |
dc5dd1eb | 1491 | snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state); |
61bb466e KW |
1492 | #endif |
1493 | ||
1494 | return buf; | |
1495 | } | |
1496 | ||
132f8e03 PA |
1497 | /* to_can_run implementation for "target procfs". Note this really |
1498 | means "can this target be the default run target", which there can | |
1499 | be only one, and we make it be "target native" like other ports. | |
1500 | "target procfs <node>" wouldn't make sense as default run target, as | |
1501 | it needs <node>. */ | |
ee8e9165 | 1502 | |
f6ac5f3d PA |
1503 | int |
1504 | nto_procfs_target::can_run () | |
132f8e03 PA |
1505 | { |
1506 | return 0; | |
1507 | } | |
1508 | ||
1509 | /* "target procfs". */ | |
f6ac5f3d | 1510 | static nto_procfs_target_procfs nto_procfs_ops; |
132f8e03 | 1511 | |
6a3cb8e8 | 1512 | /* "target native". */ |
f6ac5f3d | 1513 | static nto_procfs_target_native nto_native_ops; |
6a3cb8e8 | 1514 | |
132f8e03 PA |
1515 | /* Create the "native" and "procfs" targets. */ |
1516 | ||
1517 | static void | |
1518 | init_procfs_targets (void) | |
61bb466e | 1519 | { |
132f8e03 | 1520 | /* Register "target native". This is the default run target. */ |
f6ac5f3d | 1521 | add_target (&nto_native_ops); |
132f8e03 PA |
1522 | |
1523 | /* Register "target procfs <node>". */ | |
132f8e03 | 1524 | add_target (&nto_procfs_ops); |
61bb466e KW |
1525 | } |
1526 | ||
1527 | #define OSTYPE_NTO 1 | |
1528 | ||
1529 | void | |
dc5dd1eb | 1530 | _initialize_procfs (void) |
61bb466e KW |
1531 | { |
1532 | sigset_t set; | |
1533 | ||
132f8e03 | 1534 | init_procfs_targets (); |
61bb466e KW |
1535 | |
1536 | /* We use SIGUSR1 to gain control after we block waiting for a process. | |
1537 | We use sigwaitevent to wait. */ | |
1538 | sigemptyset (&set); | |
1539 | sigaddset (&set, SIGUSR1); | |
1540 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1541 | ||
2455069d UW |
1542 | /* Initially, make sure all signals are reported. */ |
1543 | sigfillset (&run.trace); | |
61bb466e KW |
1544 | |
1545 | /* Stuff some information. */ | |
1546 | nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags; | |
1547 | nto_cpuinfo_valid = 1; | |
1548 | ||
1bedd215 AC |
1549 | add_info ("pidlist", procfs_pidlist, _("pidlist")); |
1550 | add_info ("meminfo", procfs_meminfo, _("memory information")); | |
d737fd7f KW |
1551 | |
1552 | nto_is_nto_target = procfs_is_nto_target; | |
61bb466e KW |
1553 | } |
1554 | ||
1555 | ||
1556 | static int | |
f486487f | 1557 | procfs_hw_watchpoint (int addr, int len, enum target_hw_bp_type type) |
61bb466e KW |
1558 | { |
1559 | procfs_break brk; | |
1560 | ||
1561 | switch (type) | |
1562 | { | |
f486487f | 1563 | case hw_read: |
61bb466e KW |
1564 | brk.type = _DEBUG_BREAK_RD; |
1565 | break; | |
f486487f | 1566 | case hw_access: |
61bb466e KW |
1567 | brk.type = _DEBUG_BREAK_RW; |
1568 | break; | |
1569 | default: /* Modify. */ | |
1570 | /* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */ | |
1571 | brk.type = _DEBUG_BREAK_RW; | |
1572 | } | |
1573 | brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */ | |
1574 | brk.addr = addr; | |
1575 | brk.size = len; | |
1576 | ||
1577 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1578 | if (errno != EOK) | |
1579 | { | |
9b20d036 | 1580 | perror (_("Failed to set hardware watchpoint")); |
61bb466e KW |
1581 | return -1; |
1582 | } | |
1583 | return 0; | |
1584 | } | |
1585 | ||
f6ac5f3d PA |
1586 | int |
1587 | nto_procfs_target::can_use_hw_breakpoint (enum bptype type, | |
1588 | int cnt, int othertype) | |
61bb466e KW |
1589 | { |
1590 | return 1; | |
1591 | } | |
1592 | ||
f6ac5f3d PA |
1593 | int |
1594 | nto_procfs_target::remove_hw_watchpoint (CORE_ADDR addr, int len, | |
1595 | enum target_hw_bp_type type, | |
1596 | struct expression *cond) | |
61bb466e KW |
1597 | { |
1598 | return procfs_hw_watchpoint (addr, -1, type); | |
1599 | } | |
1600 | ||
f6ac5f3d PA |
1601 | int |
1602 | nto_procfs_target::insert_hw_watchpoint (CORE_ADDR addr, int len, | |
1603 | enum target_hw_bp_type type, | |
1604 | struct expression *cond) | |
61bb466e KW |
1605 | { |
1606 | return procfs_hw_watchpoint (addr, len, type); | |
1607 | } | |
1608 | ||
f6ac5f3d PA |
1609 | int |
1610 | nto_procfs_target::stopped_by_watchpoint () | |
61bb466e | 1611 | { |
a9889169 AR |
1612 | /* NOTE: nto_stopped_by_watchpoint will be called ONLY while we are |
1613 | stopped due to a SIGTRAP. This assumes gdb works in 'all-stop' mode; | |
1614 | future gdb versions will likely run in 'non-stop' mode in which case | |
1615 | we will have to store/examine statuses per thread in question. | |
1616 | Until then, this will work fine. */ | |
1617 | ||
1618 | struct inferior *inf = current_inferior (); | |
1619 | struct nto_inferior_data *inf_data; | |
1620 | ||
1621 | gdb_assert (inf != NULL); | |
1622 | ||
1623 | inf_data = nto_inferior_data (inf); | |
1624 | ||
1625 | return inf_data->stopped_flags | |
1626 | & (_DEBUG_FLAG_TRACE_RD | |
1627 | | _DEBUG_FLAG_TRACE_WR | |
1628 | | _DEBUG_FLAG_TRACE_MODIFY); | |
61bb466e | 1629 | } |