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 | ||
57810aa7 | 103 | bool stopped_by_watchpoint () override; |
f6ac5f3d PA |
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 | |
57810aa7 | 114 | bool 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". */ | |
f6ac5f3d | 131 | |
d9f719f1 PA |
132 | static const target_info nto_native_target_info = { |
133 | "native", | |
134 | N_("QNX Neutrino local process"), | |
135 | N_("QNX Neutrino local process (started by the \"run\" command).") | |
136 | }; | |
f6ac5f3d | 137 | |
d9f719f1 PA |
138 | class nto_procfs_target_native final : public nto_procfs_target |
139 | { | |
140 | const target_info &info () const override | |
141 | { return nto_native_target_info; } | |
f6ac5f3d PA |
142 | }; |
143 | ||
144 | /* For "target procfs <node>". */ | |
f6ac5f3d | 145 | |
d9f719f1 PA |
146 | static const target_info nto_procfs_target_info = { |
147 | "procfs", | |
148 | N_("QNX Neutrino local or remote process"), | |
149 | N_("QNX Neutrino process. target procfs <node>") | |
150 | }; | |
f6ac5f3d | 151 | |
d9f719f1 PA |
152 | struct nto_procfs_target_procfs final : public nto_procfs_target |
153 | { | |
154 | const target_info &info () const override | |
155 | { return nto_procfs_target_info; } | |
f6ac5f3d PA |
156 | }; |
157 | ||
158 | static ptid_t do_attach (ptid_t ptid); | |
61bb466e | 159 | |
6a3cb8e8 | 160 | /* These two globals are only ever set in procfs_open_1, but are |
61bb466e KW |
161 | referenced elsewhere. 'nto_procfs_node' is a flag used to say |
162 | whether we are local, or we should get the current node descriptor | |
163 | for the remote QNX node. */ | |
609c3040 | 164 | static char *nodestr; |
61bb466e KW |
165 | static unsigned nto_procfs_node = ND_LOCAL_NODE; |
166 | ||
167 | /* Return the current QNX Node, or error out. This is a simple | |
168 | wrapper for the netmgr_strtond() function. The reason this | |
169 | is required is because QNX node descriptors are transient so | |
170 | we have to re-acquire them every time. */ | |
171 | static unsigned | |
d737fd7f | 172 | nto_node (void) |
61bb466e KW |
173 | { |
174 | unsigned node; | |
175 | ||
609c3040 AR |
176 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 |
177 | || nodestr == NULL) | |
61bb466e KW |
178 | return ND_LOCAL_NODE; |
179 | ||
609c3040 | 180 | node = netmgr_strtond (nodestr, 0); |
61bb466e | 181 | if (node == -1) |
8a3fe4f8 | 182 | error (_("Lost the QNX node. Debug session probably over.")); |
61bb466e KW |
183 | |
184 | return (node); | |
185 | } | |
186 | ||
d737fd7f KW |
187 | static enum gdb_osabi |
188 | procfs_is_nto_target (bfd *abfd) | |
189 | { | |
190 | return GDB_OSABI_QNXNTO; | |
191 | } | |
192 | ||
6a3cb8e8 PA |
193 | /* This is called when we call 'target native' or 'target procfs |
194 | <arg>' from the (gdb) prompt. For QNX6 (nto), the only valid arg | |
195 | will be a QNX node string, eg: "/net/some_node". If arg is not a | |
196 | valid QNX node, we will default to local. */ | |
f6ac5f3d PA |
197 | void |
198 | nto_procfs_target::open (const char *arg, int from_tty) | |
61bb466e | 199 | { |
61bb466e KW |
200 | char *endstr; |
201 | char buffer[50]; | |
5dc1a704 | 202 | int total_size; |
61bb466e | 203 | procfs_sysinfo *sysinfo; |
609c3040 | 204 | char nto_procfs_path[PATH_MAX]; |
61bb466e | 205 | |
6a3cb8e8 PA |
206 | /* Offer to kill previous inferiors before opening this target. */ |
207 | target_preopen (from_tty); | |
208 | ||
d737fd7f KW |
209 | nto_is_nto_target = procfs_is_nto_target; |
210 | ||
61bb466e KW |
211 | /* Set the default node used for spawning to this one, |
212 | and only override it if there is a valid arg. */ | |
213 | ||
609c3040 AR |
214 | xfree (nodestr); |
215 | nodestr = NULL; | |
216 | ||
61bb466e | 217 | nto_procfs_node = ND_LOCAL_NODE; |
609c3040 | 218 | nodestr = (arg != NULL) ? xstrdup (arg) : NULL; |
61bb466e KW |
219 | |
220 | init_thread_list (); | |
221 | ||
222 | if (nodestr) | |
223 | { | |
224 | nto_procfs_node = netmgr_strtond (nodestr, &endstr); | |
225 | if (nto_procfs_node == -1) | |
226 | { | |
227 | if (errno == ENOTSUP) | |
228 | printf_filtered ("QNX Net Manager not found.\n"); | |
229 | printf_filtered ("Invalid QNX node %s: error %d (%s).\n", nodestr, | |
dc5dd1eb | 230 | errno, safe_strerror (errno)); |
61bb466e KW |
231 | xfree (nodestr); |
232 | nodestr = NULL; | |
233 | nto_procfs_node = ND_LOCAL_NODE; | |
234 | } | |
235 | else if (*endstr) | |
236 | { | |
237 | if (*(endstr - 1) == '/') | |
238 | *(endstr - 1) = 0; | |
239 | else | |
240 | *endstr = 0; | |
241 | } | |
242 | } | |
609c3040 AR |
243 | snprintf (nto_procfs_path, PATH_MAX - 1, "%s%s", |
244 | (nodestr != NULL) ? nodestr : "", "/proc"); | |
61bb466e | 245 | |
5dc1a704 TT |
246 | scoped_fd fd (open (nto_procfs_path, O_RDONLY)); |
247 | if (fd.get () == -1) | |
61bb466e KW |
248 | { |
249 | printf_filtered ("Error opening %s : %d (%s)\n", nto_procfs_path, errno, | |
dc5dd1eb | 250 | safe_strerror (errno)); |
8a3fe4f8 | 251 | error (_("Invalid procfs arg")); |
61bb466e KW |
252 | } |
253 | ||
254 | sysinfo = (void *) buffer; | |
5dc1a704 | 255 | if (devctl (fd.get (), DCMD_PROC_SYSINFO, sysinfo, sizeof buffer, 0) != EOK) |
61bb466e KW |
256 | { |
257 | printf_filtered ("Error getting size: %d (%s)\n", errno, | |
dc5dd1eb | 258 | safe_strerror (errno)); |
8a3fe4f8 | 259 | error (_("Devctl failed.")); |
61bb466e KW |
260 | } |
261 | else | |
262 | { | |
263 | total_size = sysinfo->total_size; | |
264 | sysinfo = alloca (total_size); | |
609c3040 | 265 | if (sysinfo == NULL) |
61bb466e KW |
266 | { |
267 | printf_filtered ("Memory error: %d (%s)\n", errno, | |
dc5dd1eb | 268 | safe_strerror (errno)); |
8a3fe4f8 | 269 | error (_("alloca failed.")); |
61bb466e KW |
270 | } |
271 | else | |
272 | { | |
5dc1a704 TT |
273 | if (devctl (fd.get (), DCMD_PROC_SYSINFO, sysinfo, total_size, 0) |
274 | != EOK) | |
61bb466e KW |
275 | { |
276 | printf_filtered ("Error getting sysinfo: %d (%s)\n", errno, | |
dc5dd1eb | 277 | safe_strerror (errno)); |
8a3fe4f8 | 278 | error (_("Devctl failed.")); |
61bb466e KW |
279 | } |
280 | else | |
281 | { | |
282 | if (sysinfo->type != | |
1143fffb | 283 | nto_map_arch_to_cputype (gdbarch_bfd_arch_info |
f5656ead | 284 | (target_gdbarch ())->arch_name)) |
9fe4a216 | 285 | error (_("Invalid target CPU.")); |
61bb466e KW |
286 | } |
287 | } | |
288 | } | |
6a3cb8e8 | 289 | |
f6ac5f3d | 290 | inf_child_target::open (arg, from_tty); |
61bb466e KW |
291 | printf_filtered ("Debugging using %s\n", nto_procfs_path); |
292 | } | |
293 | ||
294 | static void | |
295 | procfs_set_thread (ptid_t ptid) | |
296 | { | |
297 | pid_t tid; | |
298 | ||
299 | tid = ptid_get_tid (ptid); | |
300 | devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0); | |
301 | } | |
302 | ||
57810aa7 PA |
303 | /* Return true if the thread TH is still alive. */ |
304 | ||
305 | bool | |
f6ac5f3d | 306 | nto_procfs_target::thread_alive (ptid_t ptid) |
61bb466e KW |
307 | { |
308 | pid_t tid; | |
745a434e AR |
309 | pid_t pid; |
310 | procfs_status status; | |
311 | int err; | |
61bb466e KW |
312 | |
313 | tid = ptid_get_tid (ptid); | |
745a434e AR |
314 | pid = ptid_get_pid (ptid); |
315 | ||
316 | if (kill (pid, 0) == -1) | |
57810aa7 | 317 | return false; |
745a434e AR |
318 | |
319 | status.tid = tid; | |
320 | if ((err = devctl (ctl_fd, DCMD_PROC_TIDSTATUS, | |
321 | &status, sizeof (status), 0)) != EOK) | |
57810aa7 | 322 | return false; |
745a434e AR |
323 | |
324 | /* Thread is alive or dead but not yet joined, | |
325 | or dead and there is an alive (or dead unjoined) thread with | |
326 | higher tid. | |
327 | ||
328 | If the tid is not the same as requested, requested tid is dead. */ | |
329 | return (status.tid == tid) && (status.state != STATE_DEAD); | |
330 | } | |
331 | ||
332 | static void | |
333 | update_thread_private_data_name (struct thread_info *new_thread, | |
334 | const char *newname) | |
335 | { | |
7aabaf9d | 336 | nto_thread_info *pti = get_nto_thread_info (new_thread); |
745a434e AR |
337 | |
338 | gdb_assert (newname != NULL); | |
339 | gdb_assert (new_thread != NULL); | |
7aabaf9d SM |
340 | |
341 | if (pti) | |
745a434e | 342 | { |
7aabaf9d SM |
343 | pti = new nto_thread_info; |
344 | new_thread->priv.reset (pti); | |
745a434e | 345 | } |
7aabaf9d SM |
346 | |
347 | pti->name = newname; | |
745a434e AR |
348 | } |
349 | ||
350 | static void | |
351 | update_thread_private_data (struct thread_info *new_thread, | |
352 | pthread_t tid, int state, int flags) | |
353 | { | |
745a434e AR |
354 | procfs_info pidinfo; |
355 | struct _thread_name *tn; | |
356 | procfs_threadctl tctl; | |
357 | ||
358 | #if _NTO_VERSION > 630 | |
359 | gdb_assert (new_thread != NULL); | |
360 | ||
361 | if (devctl (ctl_fd, DCMD_PROC_INFO, &pidinfo, | |
362 | sizeof(pidinfo), 0) != EOK) | |
363 | return; | |
364 | ||
365 | memset (&tctl, 0, sizeof (tctl)); | |
366 | tctl.cmd = _NTO_TCTL_NAME; | |
367 | tn = (struct _thread_name *) (&tctl.data); | |
368 | ||
369 | /* Fetch name for the given thread. */ | |
370 | tctl.tid = tid; | |
371 | tn->name_buf_len = sizeof (tctl.data) - sizeof (*tn); | |
372 | tn->new_name_len = -1; /* Getting, not setting. */ | |
373 | if (devctl (ctl_fd, DCMD_PROC_THREADCTL, &tctl, sizeof (tctl), NULL) != EOK) | |
374 | tn->name_buf[0] = '\0'; | |
375 | ||
376 | tn->name_buf[_NTO_THREAD_NAME_MAX] = '\0'; | |
377 | ||
378 | update_thread_private_data_name (new_thread, tn->name_buf); | |
379 | ||
7aabaf9d | 380 | nto_thread_info *pti = get_nto_thread_info (new_thread); |
745a434e AR |
381 | pti->tid = tid; |
382 | pti->state = state; | |
383 | pti->flags = flags; | |
384 | #endif /* _NTO_VERSION */ | |
61bb466e KW |
385 | } |
386 | ||
f6ac5f3d PA |
387 | void |
388 | nto_procfs_target::update_thread_list () | |
61bb466e KW |
389 | { |
390 | procfs_status status; | |
391 | pid_t pid; | |
392 | ptid_t ptid; | |
745a434e AR |
393 | pthread_t tid; |
394 | struct thread_info *new_thread; | |
61bb466e KW |
395 | |
396 | if (ctl_fd == -1) | |
397 | return; | |
398 | ||
e8032dde PA |
399 | prune_threads (); |
400 | ||
61bb466e KW |
401 | pid = ptid_get_pid (inferior_ptid); |
402 | ||
745a434e AR |
403 | status.tid = 1; |
404 | ||
405 | for (tid = 1;; ++tid) | |
61bb466e | 406 | { |
745a434e AR |
407 | if (status.tid == tid |
408 | && (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0) | |
409 | != EOK)) | |
61bb466e | 410 | break; |
745a434e AR |
411 | if (status.tid != tid) |
412 | /* The reason why this would not be equal is that devctl might have | |
413 | returned different tid, meaning the requested tid no longer exists | |
414 | (e.g. thread exited). */ | |
415 | continue; | |
416 | ptid = ptid_build (pid, 0, tid); | |
417 | new_thread = find_thread_ptid (ptid); | |
418 | if (!new_thread) | |
419 | new_thread = add_thread (ptid); | |
420 | update_thread_private_data (new_thread, tid, status.state, 0); | |
421 | status.tid++; | |
61bb466e KW |
422 | } |
423 | return; | |
424 | } | |
425 | ||
774ee6d2 | 426 | static void |
1d12d88f | 427 | procfs_pidlist (const char *args, int from_tty) |
61bb466e | 428 | { |
61bb466e | 429 | struct dirent *dirp = NULL; |
609c3040 | 430 | char buf[PATH_MAX]; |
61bb466e KW |
431 | procfs_info *pidinfo = NULL; |
432 | procfs_debuginfo *info = NULL; | |
433 | procfs_status *status = NULL; | |
434 | pid_t num_threads = 0; | |
435 | pid_t pid; | |
436 | char name[512]; | |
609c3040 | 437 | char procfs_dir[PATH_MAX]; |
61bb466e | 438 | |
609c3040 AR |
439 | snprintf (procfs_dir, sizeof (procfs_dir), "%s%s", |
440 | (nodestr != NULL) ? nodestr : "", "/proc"); | |
441 | ||
f0b3976b | 442 | gdb_dir_up dp (opendir (procfs_dir)); |
61bb466e KW |
443 | if (dp == NULL) |
444 | { | |
dc5dd1eb | 445 | fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)", |
609c3040 | 446 | procfs_dir, errno, safe_strerror (errno)); |
61bb466e KW |
447 | return; |
448 | } | |
449 | ||
450 | /* Start scan at first pid. */ | |
f0b3976b | 451 | rewinddir (dp.get ()); |
61bb466e KW |
452 | |
453 | do | |
454 | { | |
455 | /* Get the right pid and procfs path for the pid. */ | |
456 | do | |
457 | { | |
f0b3976b | 458 | dirp = readdir (dp.get ()); |
61bb466e | 459 | if (dirp == NULL) |
f0b3976b | 460 | return; |
609c3040 AR |
461 | snprintf (buf, sizeof (buf), "%s%s/%s/as", |
462 | (nodestr != NULL) ? nodestr : "", | |
463 | "/proc", dirp->d_name); | |
61bb466e KW |
464 | pid = atoi (dirp->d_name); |
465 | } | |
466 | while (pid == 0); | |
467 | ||
0df8b418 | 468 | /* Open the procfs path. */ |
5dc1a704 TT |
469 | scoped_fd fd (open (buf, O_RDONLY)); |
470 | if (fd.get () == -1) | |
61bb466e | 471 | { |
dc5dd1eb | 472 | fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n", |
d737fd7f | 473 | buf, errno, safe_strerror (errno)); |
609c3040 | 474 | continue; |
61bb466e KW |
475 | } |
476 | ||
477 | pidinfo = (procfs_info *) buf; | |
5dc1a704 | 478 | if (devctl (fd.get (), DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK) |
61bb466e | 479 | { |
dc5dd1eb | 480 | fprintf_unfiltered (gdb_stderr, |
d737fd7f KW |
481 | "devctl DCMD_PROC_INFO failed - %d (%s)\n", |
482 | errno, safe_strerror (errno)); | |
61bb466e KW |
483 | break; |
484 | } | |
485 | num_threads = pidinfo->num_threads; | |
486 | ||
487 | info = (procfs_debuginfo *) buf; | |
5dc1a704 TT |
488 | if (devctl (fd.get (), DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0) |
489 | != EOK) | |
61bb466e KW |
490 | strcpy (name, "unavailable"); |
491 | else | |
492 | strcpy (name, info->path); | |
493 | ||
494 | /* Collect state info on all the threads. */ | |
495 | status = (procfs_status *) buf; | |
496 | for (status->tid = 1; status->tid <= num_threads; status->tid++) | |
497 | { | |
609c3040 | 498 | const int err |
5dc1a704 | 499 | = devctl (fd.get (), DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0); |
609c3040 AR |
500 | printf_filtered ("%s - %d", name, pid); |
501 | if (err == EOK && status->tid != 0) | |
502 | printf_filtered ("/%d\n", status->tid); | |
503 | else | |
504 | { | |
505 | printf_filtered ("\n"); | |
506 | break; | |
507 | } | |
61bb466e | 508 | } |
61bb466e KW |
509 | } |
510 | while (dirp != NULL); | |
61bb466e KW |
511 | } |
512 | ||
774ee6d2 | 513 | static void |
1d12d88f | 514 | procfs_meminfo (const char *args, int from_tty) |
61bb466e KW |
515 | { |
516 | procfs_mapinfo *mapinfos = NULL; | |
517 | static int num_mapinfos = 0; | |
518 | procfs_mapinfo *mapinfo_p, *mapinfo_p2; | |
519 | int flags = ~0, err, num, i, j; | |
520 | ||
521 | struct | |
522 | { | |
523 | procfs_debuginfo info; | |
524 | char buff[_POSIX_PATH_MAX]; | |
525 | } map; | |
526 | ||
527 | struct info | |
528 | { | |
529 | unsigned addr; | |
530 | unsigned size; | |
531 | unsigned flags; | |
532 | unsigned debug_vaddr; | |
533 | unsigned long long offset; | |
534 | }; | |
535 | ||
536 | struct printinfo | |
537 | { | |
538 | unsigned long long ino; | |
539 | unsigned dev; | |
540 | struct info text; | |
541 | struct info data; | |
542 | char name[256]; | |
543 | } printme; | |
544 | ||
545 | /* Get the number of map entrys. */ | |
546 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num); | |
547 | if (err != EOK) | |
548 | { | |
d737fd7f KW |
549 | printf ("failed devctl num mapinfos - %d (%s)\n", err, |
550 | safe_strerror (err)); | |
61bb466e KW |
551 | return; |
552 | } | |
553 | ||
774ee6d2 | 554 | mapinfos = XNEWVEC (procfs_mapinfo, num); |
61bb466e KW |
555 | |
556 | num_mapinfos = num; | |
557 | mapinfo_p = mapinfos; | |
558 | ||
559 | /* Fill the map entrys. */ | |
560 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, mapinfo_p, num | |
561 | * sizeof (procfs_mapinfo), &num); | |
562 | if (err != EOK) | |
563 | { | |
5483d879 | 564 | printf ("failed devctl mapinfos - %d (%s)\n", err, safe_strerror (err)); |
61bb466e KW |
565 | xfree (mapinfos); |
566 | return; | |
567 | } | |
568 | ||
325fac50 | 569 | num = std::min (num, num_mapinfos); |
61bb466e KW |
570 | |
571 | /* Run through the list of mapinfos, and store the data and text info | |
572 | so we can print it at the bottom of the loop. */ | |
573 | for (mapinfo_p = mapinfos, i = 0; i < num; i++, mapinfo_p++) | |
574 | { | |
575 | if (!(mapinfo_p->flags & flags)) | |
576 | mapinfo_p->ino = 0; | |
577 | ||
578 | if (mapinfo_p->ino == 0) /* Already visited. */ | |
579 | continue; | |
580 | ||
581 | map.info.vaddr = mapinfo_p->vaddr; | |
582 | ||
583 | err = devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
584 | if (err != EOK) | |
585 | continue; | |
586 | ||
587 | memset (&printme, 0, sizeof printme); | |
588 | printme.dev = mapinfo_p->dev; | |
589 | printme.ino = mapinfo_p->ino; | |
590 | printme.text.addr = mapinfo_p->vaddr; | |
591 | printme.text.size = mapinfo_p->size; | |
592 | printme.text.flags = mapinfo_p->flags; | |
593 | printme.text.offset = mapinfo_p->offset; | |
594 | printme.text.debug_vaddr = map.info.vaddr; | |
595 | strcpy (printme.name, map.info.path); | |
596 | ||
597 | /* Check for matching data. */ | |
598 | for (mapinfo_p2 = mapinfos, j = 0; j < num; j++, mapinfo_p2++) | |
599 | { | |
600 | if (mapinfo_p2->vaddr != mapinfo_p->vaddr | |
601 | && mapinfo_p2->ino == mapinfo_p->ino | |
602 | && mapinfo_p2->dev == mapinfo_p->dev) | |
603 | { | |
604 | map.info.vaddr = mapinfo_p2->vaddr; | |
605 | err = | |
606 | devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
607 | if (err != EOK) | |
608 | continue; | |
609 | ||
610 | if (strcmp (map.info.path, printme.name)) | |
611 | continue; | |
612 | ||
613 | /* Lower debug_vaddr is always text, if nessessary, swap. */ | |
614 | if ((int) map.info.vaddr < (int) printme.text.debug_vaddr) | |
615 | { | |
616 | memcpy (&(printme.data), &(printme.text), | |
617 | sizeof (printme.data)); | |
618 | printme.text.addr = mapinfo_p2->vaddr; | |
619 | printme.text.size = mapinfo_p2->size; | |
620 | printme.text.flags = mapinfo_p2->flags; | |
621 | printme.text.offset = mapinfo_p2->offset; | |
622 | printme.text.debug_vaddr = map.info.vaddr; | |
623 | } | |
624 | else | |
625 | { | |
626 | printme.data.addr = mapinfo_p2->vaddr; | |
627 | printme.data.size = mapinfo_p2->size; | |
628 | printme.data.flags = mapinfo_p2->flags; | |
629 | printme.data.offset = mapinfo_p2->offset; | |
630 | printme.data.debug_vaddr = map.info.vaddr; | |
631 | } | |
632 | mapinfo_p2->ino = 0; | |
633 | } | |
634 | } | |
635 | mapinfo_p->ino = 0; | |
636 | ||
637 | printf_filtered ("%s\n", printme.name); | |
638 | printf_filtered ("\ttext=%08x bytes @ 0x%08x\n", printme.text.size, | |
639 | printme.text.addr); | |
640 | printf_filtered ("\t\tflags=%08x\n", printme.text.flags); | |
641 | printf_filtered ("\t\tdebug=%08x\n", printme.text.debug_vaddr); | |
2244ba2e | 642 | printf_filtered ("\t\toffset=%s\n", phex (printme.text.offset, 8)); |
61bb466e KW |
643 | if (printme.data.size) |
644 | { | |
645 | printf_filtered ("\tdata=%08x bytes @ 0x%08x\n", printme.data.size, | |
646 | printme.data.addr); | |
647 | printf_filtered ("\t\tflags=%08x\n", printme.data.flags); | |
648 | printf_filtered ("\t\tdebug=%08x\n", printme.data.debug_vaddr); | |
2244ba2e | 649 | printf_filtered ("\t\toffset=%s\n", phex (printme.data.offset, 8)); |
61bb466e KW |
650 | } |
651 | printf_filtered ("\tdev=0x%x\n", printme.dev); | |
652 | printf_filtered ("\tino=0x%x\n", (unsigned int) printme.ino); | |
653 | } | |
654 | xfree (mapinfos); | |
655 | return; | |
656 | } | |
657 | ||
658 | /* Print status information about what we're accessing. */ | |
f6ac5f3d PA |
659 | void |
660 | nto_procfs_target::files_info () | |
61bb466e | 661 | { |
181e7f93 PA |
662 | struct inferior *inf = current_inferior (); |
663 | ||
61bb466e | 664 | printf_unfiltered ("\tUsing the running image of %s %s via %s.\n", |
3fdfcbf1 | 665 | inf->attach_flag ? "attached" : "child", |
609c3040 AR |
666 | target_pid_to_str (inferior_ptid), |
667 | (nodestr != NULL) ? nodestr : "local node"); | |
61bb466e KW |
668 | } |
669 | ||
e5343fde AR |
670 | /* Target to_pid_to_exec_file implementation. */ |
671 | ||
f6ac5f3d PA |
672 | char * |
673 | nto_procfs_target::pid_to_exec_file (const int pid) | |
e5343fde AR |
674 | { |
675 | int proc_fd; | |
676 | static char proc_path[PATH_MAX]; | |
677 | ssize_t rd; | |
678 | ||
679 | /* Read exe file name. */ | |
680 | snprintf (proc_path, sizeof (proc_path), "%s/proc/%d/exefile", | |
681 | (nodestr != NULL) ? nodestr : "", pid); | |
682 | proc_fd = open (proc_path, O_RDONLY); | |
683 | if (proc_fd == -1) | |
684 | return NULL; | |
685 | ||
686 | rd = read (proc_fd, proc_path, sizeof (proc_path) - 1); | |
687 | close (proc_fd); | |
688 | if (rd <= 0) | |
689 | { | |
690 | proc_path[0] = '\0'; | |
691 | return NULL; | |
692 | } | |
693 | proc_path[rd] = '\0'; | |
694 | return proc_path; | |
695 | } | |
696 | ||
61bb466e | 697 | /* Attach to process PID, then initialize for debugging it. */ |
f6ac5f3d PA |
698 | void |
699 | nto_procfs_target::attach (const char *args, int from_tty) | |
61bb466e KW |
700 | { |
701 | char *exec_file; | |
702 | int pid; | |
181e7f93 | 703 | struct inferior *inf; |
61bb466e | 704 | |
74164c56 | 705 | pid = parse_pid_to_attach (args); |
61bb466e KW |
706 | |
707 | if (pid == getpid ()) | |
8a3fe4f8 | 708 | error (_("Attaching GDB to itself is not a good idea...")); |
61bb466e KW |
709 | |
710 | if (from_tty) | |
711 | { | |
712 | exec_file = (char *) get_exec_file (0); | |
713 | ||
714 | if (exec_file) | |
715 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
716 | target_pid_to_str (pid_to_ptid (pid))); | |
717 | else | |
718 | printf_unfiltered ("Attaching to %s\n", | |
719 | target_pid_to_str (pid_to_ptid (pid))); | |
720 | ||
721 | gdb_flush (gdb_stdout); | |
722 | } | |
723 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
6c95b8df PA |
724 | inf = current_inferior (); |
725 | inferior_appeared (inf, pid); | |
181e7f93 | 726 | inf->attach_flag = 1; |
7f9f62ba | 727 | |
6a3cb8e8 PA |
728 | if (!target_is_pushed (ops)) |
729 | push_target (ops); | |
7f9f62ba | 730 | |
e8032dde | 731 | procfs_update_thread_list (ops); |
61bb466e KW |
732 | } |
733 | ||
f6ac5f3d PA |
734 | void |
735 | nto_procfs_target::post_attach (pid_t pid) | |
61bb466e | 736 | { |
61bb466e | 737 | if (exec_bfd) |
268a4a75 | 738 | solib_create_inferior_hook (0); |
61bb466e KW |
739 | } |
740 | ||
741 | static ptid_t | |
742 | do_attach (ptid_t ptid) | |
743 | { | |
744 | procfs_status status; | |
745 | struct sigevent event; | |
dc5dd1eb | 746 | char path[PATH_MAX]; |
61bb466e | 747 | |
609c3040 AR |
748 | snprintf (path, PATH_MAX - 1, "%s%s/%d/as", |
749 | (nodestr != NULL) ? nodestr : "", "/proc", ptid_get_pid (ptid)); | |
61bb466e KW |
750 | ctl_fd = open (path, O_RDWR); |
751 | if (ctl_fd == -1) | |
8a3fe4f8 | 752 | error (_("Couldn't open proc file %s, error %d (%s)"), path, errno, |
dc5dd1eb | 753 | safe_strerror (errno)); |
61bb466e | 754 | if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK) |
8a3fe4f8 | 755 | error (_("Couldn't stop process")); |
61bb466e KW |
756 | |
757 | /* Define a sigevent for process stopped notification. */ | |
758 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
759 | event.sigev_signo = SIGUSR1; | |
760 | event.sigev_code = 0; | |
761 | event.sigev_value.sival_ptr = NULL; | |
762 | event.sigev_priority = -1; | |
763 | devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0); | |
764 | ||
765 | if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK | |
766 | && status.flags & _DEBUG_FLAG_STOPPED) | |
dfd4cc63 | 767 | SignalKill (nto_node (), ptid_get_pid (ptid), 0, SIGCONT, 0, 0); |
61bb466e | 768 | nto_init_solib_absolute_prefix (); |
dfd4cc63 | 769 | return ptid_build (ptid_get_pid (ptid), 0, status.tid); |
61bb466e KW |
770 | } |
771 | ||
772 | /* Ask the user what to do when an interrupt is received. */ | |
773 | static void | |
dc5dd1eb | 774 | interrupt_query (void) |
61bb466e | 775 | { |
9e2f0ad4 HZ |
776 | if (query (_("Interrupted while waiting for the program.\n\ |
777 | Give up (and stop debugging it)? "))) | |
61bb466e | 778 | { |
bc1e6c81 | 779 | target_mourn_inferior (inferior_ptid); |
039e3c22 | 780 | quit (); |
61bb466e | 781 | } |
61bb466e KW |
782 | } |
783 | ||
784 | /* The user typed ^C twice. */ | |
785 | static void | |
bfedc46a | 786 | nto_handle_sigint_twice (int signo) |
61bb466e KW |
787 | { |
788 | signal (signo, ofunc); | |
789 | interrupt_query (); | |
bfedc46a | 790 | signal (signo, nto_handle_sigint_twice); |
61bb466e KW |
791 | } |
792 | ||
793 | static void | |
bfedc46a | 794 | nto_handle_sigint (int signo) |
61bb466e KW |
795 | { |
796 | /* If this doesn't work, try more severe steps. */ | |
bfedc46a | 797 | signal (signo, nto_handle_sigint_twice); |
61bb466e | 798 | |
e671cd59 | 799 | target_interrupt (); |
61bb466e KW |
800 | } |
801 | ||
f6ac5f3d PA |
802 | sptid_t |
803 | nto_procfs_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus, | |
804 | int options) | |
61bb466e KW |
805 | { |
806 | sigset_t set; | |
807 | siginfo_t info; | |
808 | procfs_status status; | |
809 | static int exit_signo = 0; /* To track signals that cause termination. */ | |
810 | ||
811 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
812 | ||
813 | if (ptid_equal (inferior_ptid, null_ptid)) | |
814 | { | |
815 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 816 | ourstatus->value.sig = GDB_SIGNAL_0; |
61bb466e KW |
817 | exit_signo = 0; |
818 | return null_ptid; | |
819 | } | |
820 | ||
821 | sigemptyset (&set); | |
822 | sigaddset (&set, SIGUSR1); | |
823 | ||
824 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
825 | while (!(status.flags & _DEBUG_FLAG_ISTOP)) | |
826 | { | |
a40805d4 | 827 | ofunc = signal (SIGINT, nto_handle_sigint); |
61bb466e KW |
828 | sigwaitinfo (&set, &info); |
829 | signal (SIGINT, ofunc); | |
830 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
831 | } | |
832 | ||
a9889169 AR |
833 | nto_inferior_data (NULL)->stopped_flags = status.flags; |
834 | nto_inferior_data (NULL)->stopped_pc = status.ip; | |
835 | ||
61bb466e KW |
836 | if (status.flags & _DEBUG_FLAG_SSTEP) |
837 | { | |
838 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 839 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
840 | } |
841 | /* Was it a breakpoint? */ | |
842 | else if (status.flags & _DEBUG_FLAG_TRACE) | |
843 | { | |
844 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 845 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
846 | } |
847 | else if (status.flags & _DEBUG_FLAG_ISTOP) | |
848 | { | |
849 | switch (status.why) | |
850 | { | |
851 | case _DEBUG_WHY_SIGNALLED: | |
852 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
853 | ourstatus->value.sig = | |
2ea28649 | 854 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
855 | exit_signo = 0; |
856 | break; | |
857 | case _DEBUG_WHY_FAULTED: | |
858 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
859 | if (status.info.si_signo == SIGTRAP) | |
860 | { | |
861 | ourstatus->value.sig = 0; | |
862 | exit_signo = 0; | |
863 | } | |
864 | else | |
865 | { | |
866 | ourstatus->value.sig = | |
2ea28649 | 867 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
868 | exit_signo = ourstatus->value.sig; |
869 | } | |
870 | break; | |
871 | ||
872 | case _DEBUG_WHY_TERMINATED: | |
873 | { | |
874 | int waitval = 0; | |
875 | ||
dfd4cc63 | 876 | waitpid (ptid_get_pid (inferior_ptid), &waitval, WNOHANG); |
61bb466e KW |
877 | if (exit_signo) |
878 | { | |
879 | /* Abnormal death. */ | |
880 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
881 | ourstatus->value.sig = exit_signo; | |
882 | } | |
883 | else | |
884 | { | |
885 | /* Normal death. */ | |
886 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
887 | ourstatus->value.integer = WEXITSTATUS (waitval); | |
888 | } | |
889 | exit_signo = 0; | |
890 | break; | |
891 | } | |
892 | ||
893 | case _DEBUG_WHY_REQUESTED: | |
894 | /* We are assuming a requested stop is due to a SIGINT. */ | |
895 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 896 | ourstatus->value.sig = GDB_SIGNAL_INT; |
61bb466e KW |
897 | exit_signo = 0; |
898 | break; | |
899 | } | |
900 | } | |
901 | ||
a6a7f2a5 | 902 | return ptid_build (status.pid, 0, status.tid); |
61bb466e KW |
903 | } |
904 | ||
905 | /* Read the current values of the inferior's registers, both the | |
906 | general register set and floating point registers (if supported) | |
907 | and update gdb's idea of their current values. */ | |
f6ac5f3d PA |
908 | void |
909 | nto_procfs_target::fetch_registers (struct regcache *regcache, int regno) | |
61bb466e KW |
910 | { |
911 | union | |
912 | { | |
913 | procfs_greg greg; | |
914 | procfs_fpreg fpreg; | |
915 | procfs_altreg altreg; | |
916 | } | |
917 | reg; | |
918 | int regsize; | |
919 | ||
222312d3 | 920 | procfs_set_thread (regcache->ptid ()); |
61bb466e | 921 | if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK) |
56be3814 | 922 | nto_supply_gregset (regcache, (char *) ®.greg); |
61bb466e KW |
923 | if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size) |
924 | == EOK) | |
56be3814 | 925 | nto_supply_fpregset (regcache, (char *) ®.fpreg); |
61bb466e KW |
926 | if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size) |
927 | == EOK) | |
56be3814 | 928 | nto_supply_altregset (regcache, (char *) ®.altreg); |
61bb466e KW |
929 | } |
930 | ||
9d46c4e5 PA |
931 | /* Helper for procfs_xfer_partial that handles memory transfers. |
932 | Arguments are like target_xfer_partial. */ | |
61bb466e | 933 | |
9d46c4e5 PA |
934 | static enum target_xfer_status |
935 | procfs_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, | |
936 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
61bb466e | 937 | { |
9d46c4e5 PA |
938 | int nbytes; |
939 | ||
940 | if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) != (off_t) memaddr) | |
941 | return TARGET_XFER_E_IO; | |
942 | ||
943 | if (writebuf != NULL) | |
944 | nbytes = write (ctl_fd, writebuf, len); | |
945 | else | |
946 | nbytes = read (ctl_fd, readbuf, len); | |
947 | if (nbytes <= 0) | |
948 | return TARGET_XFER_E_IO; | |
949 | *xfered_len = nbytes; | |
950 | return TARGET_XFER_OK; | |
951 | } | |
952 | ||
953 | /* Target to_xfer_partial implementation. */ | |
61bb466e | 954 | |
f6ac5f3d PA |
955 | enum target_xfer_status |
956 | nto_procfs_target::xfer_partial (enum target_object object, | |
957 | const char *annex, gdb_byte *readbuf, | |
958 | const gdb_byte *writebuf, ULONGEST offset, | |
959 | ULONGEST len, ULONGEST *xfered_len) | |
9d46c4e5 PA |
960 | { |
961 | switch (object) | |
61bb466e | 962 | { |
9d46c4e5 PA |
963 | case TARGET_OBJECT_MEMORY: |
964 | return procfs_xfer_memory (readbuf, writebuf, offset, len, xfered_len); | |
8a6c0ccd AR |
965 | case TARGET_OBJECT_AUXV: |
966 | if (readbuf != NULL) | |
967 | { | |
968 | int err; | |
969 | CORE_ADDR initial_stack; | |
970 | debug_process_t procinfo; | |
971 | /* For 32-bit architecture, size of auxv_t is 8 bytes. */ | |
972 | const unsigned int sizeof_auxv_t = sizeof (auxv_t); | |
973 | const unsigned int sizeof_tempbuf = 20 * sizeof_auxv_t; | |
974 | int tempread; | |
975 | gdb_byte *const tempbuf = alloca (sizeof_tempbuf); | |
976 | ||
977 | if (tempbuf == NULL) | |
978 | return TARGET_XFER_E_IO; | |
979 | ||
980 | err = devctl (ctl_fd, DCMD_PROC_INFO, &procinfo, | |
981 | sizeof procinfo, 0); | |
982 | if (err != EOK) | |
983 | return TARGET_XFER_E_IO; | |
984 | ||
985 | initial_stack = procinfo.initial_stack; | |
986 | ||
987 | /* procfs is always 'self-hosted', no byte-order manipulation. */ | |
988 | tempread = nto_read_auxv_from_initial_stack (initial_stack, tempbuf, | |
989 | sizeof_tempbuf, | |
990 | sizeof (auxv_t)); | |
325fac50 | 991 | tempread = std::min (tempread, len) - offset; |
8a6c0ccd AR |
992 | memcpy (readbuf, tempbuf + offset, tempread); |
993 | *xfered_len = tempread; | |
994 | return tempread ? TARGET_XFER_OK : TARGET_XFER_EOF; | |
995 | } | |
996 | /* Fallthru */ | |
9d46c4e5 | 997 | default: |
4360561f TT |
998 | return this->beneath ()->xfer_partial (object, annex, |
999 | readbuf, writebuf, offset, len, | |
1000 | xfered_len); | |
61bb466e | 1001 | } |
61bb466e KW |
1002 | } |
1003 | ||
1004 | /* Take a program previously attached to and detaches it. | |
1005 | The program resumes execution and will no longer stop | |
1006 | on signals, etc. We'd better not have left any breakpoints | |
1007 | in the program or it'll die when it hits one. */ | |
f6ac5f3d PA |
1008 | void |
1009 | nto_procfs_target::detach (inferior *inf, int from_tty) | |
61bb466e | 1010 | { |
7f9f62ba | 1011 | int pid; |
61bb466e | 1012 | |
0f48b757 PA |
1013 | target_announce_detach (); |
1014 | ||
61bb466e | 1015 | if (siggnal) |
6bd6f3b6 | 1016 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, 0, 0, 0); |
61bb466e KW |
1017 | |
1018 | close (ctl_fd); | |
1019 | ctl_fd = -1; | |
7f9f62ba PA |
1020 | |
1021 | pid = ptid_get_pid (inferior_ptid); | |
61bb466e | 1022 | inferior_ptid = null_ptid; |
7f9f62ba PA |
1023 | detach_inferior (pid); |
1024 | init_thread_list (); | |
6a3cb8e8 | 1025 | inf_child_maybe_unpush_target (ops); |
61bb466e KW |
1026 | } |
1027 | ||
1028 | static int | |
1029 | procfs_breakpoint (CORE_ADDR addr, int type, int size) | |
1030 | { | |
1031 | procfs_break brk; | |
1032 | ||
1033 | brk.type = type; | |
1034 | brk.addr = addr; | |
1035 | brk.size = size; | |
1036 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1037 | if (errno != EOK) | |
1038 | return 1; | |
1039 | return 0; | |
1040 | } | |
1041 | ||
f6ac5f3d PA |
1042 | int |
1043 | nto_procfs_target::insert_breakpoint (struct gdbarch *gdbarch, | |
1044 | struct bp_target_info *bp_tgt) | |
61bb466e | 1045 | { |
0d5ed153 | 1046 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f | 1047 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, 0); |
61bb466e KW |
1048 | } |
1049 | ||
f6ac5f3d PA |
1050 | int |
1051 | nto_procfs_target::remove_breakpoint (struct gdbarch *gdbarch, | |
1052 | struct bp_target_info *bp_tgt, | |
1053 | enum remove_bp_reason reason) | |
61bb466e | 1054 | { |
8181d85f | 1055 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, -1); |
61bb466e KW |
1056 | } |
1057 | ||
f6ac5f3d PA |
1058 | int |
1059 | nto_procfs_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
1060 | struct bp_target_info *bp_tgt) | |
61bb466e | 1061 | { |
0d5ed153 | 1062 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f DJ |
1063 | return procfs_breakpoint (bp_tgt->placed_address, |
1064 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0); | |
61bb466e KW |
1065 | } |
1066 | ||
f6ac5f3d PA |
1067 | int |
1068 | nto_procfs_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
1069 | struct bp_target_info *bp_tgt) | |
61bb466e | 1070 | { |
8181d85f DJ |
1071 | return procfs_breakpoint (bp_tgt->placed_address, |
1072 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1); | |
61bb466e KW |
1073 | } |
1074 | ||
f6ac5f3d PA |
1075 | void |
1076 | nto_procfs_target::resume (ptid_t ptid, int step, enum gdb_signal signo) | |
61bb466e KW |
1077 | { |
1078 | int signal_to_pass; | |
1079 | procfs_status status; | |
14ef7606 | 1080 | sigset_t *run_fault = (sigset_t *) (void *) &run.fault; |
61bb466e KW |
1081 | |
1082 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1083 | return; | |
1084 | ||
1085 | procfs_set_thread (ptid_equal (ptid, minus_one_ptid) ? inferior_ptid : | |
1086 | ptid); | |
1087 | ||
1088 | run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE; | |
1089 | if (step) | |
1090 | run.flags |= _DEBUG_RUN_STEP; | |
1091 | ||
14ef7606 AR |
1092 | sigemptyset (run_fault); |
1093 | sigaddset (run_fault, FLTBPT); | |
1094 | sigaddset (run_fault, FLTTRACE); | |
1095 | sigaddset (run_fault, FLTILL); | |
1096 | sigaddset (run_fault, FLTPRIV); | |
1097 | sigaddset (run_fault, FLTBOUNDS); | |
1098 | sigaddset (run_fault, FLTIOVF); | |
1099 | sigaddset (run_fault, FLTIZDIV); | |
1100 | sigaddset (run_fault, FLTFPE); | |
61bb466e | 1101 | /* Peter V will be changing this at some point. */ |
14ef7606 | 1102 | sigaddset (run_fault, FLTPAGE); |
61bb466e KW |
1103 | |
1104 | run.flags |= _DEBUG_RUN_ARM; | |
1105 | ||
2ea28649 | 1106 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
1107 | |
1108 | if (signal_to_pass) | |
1109 | { | |
1110 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
2ea28649 | 1111 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
1112 | if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED)) |
1113 | { | |
1114 | if (signal_to_pass != status.info.si_signo) | |
1115 | { | |
dfd4cc63 | 1116 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, |
d737fd7f | 1117 | signal_to_pass, 0, 0); |
61bb466e KW |
1118 | run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG; |
1119 | } | |
0df8b418 | 1120 | else /* Let it kill the program without telling us. */ |
61bb466e KW |
1121 | sigdelset (&run.trace, signal_to_pass); |
1122 | } | |
1123 | } | |
1124 | else | |
1125 | run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT; | |
1126 | ||
1127 | errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0); | |
1128 | if (errno != EOK) | |
1129 | { | |
9b20d036 | 1130 | perror (_("run error!\n")); |
61bb466e KW |
1131 | return; |
1132 | } | |
1133 | } | |
1134 | ||
f6ac5f3d PA |
1135 | void |
1136 | nto_procfs_target::mourn_inferior () | |
61bb466e KW |
1137 | { |
1138 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
1139 | { | |
dfd4cc63 | 1140 | SignalKill (nto_node (), ptid_get_pid (inferior_ptid), 0, SIGKILL, 0, 0); |
61bb466e KW |
1141 | close (ctl_fd); |
1142 | } | |
1143 | inferior_ptid = null_ptid; | |
1144 | init_thread_list (); | |
c1ee2fb3 | 1145 | inf_child_mourn_inferior (ops); |
61bb466e KW |
1146 | } |
1147 | ||
1148 | /* This function breaks up an argument string into an argument | |
1149 | vector suitable for passing to execvp(). | |
1150 | E.g., on "run a b c d" this routine would get as input | |
1151 | the string "a b c d", and as output it would fill in argv with | |
1152 | the four arguments "a", "b", "c", "d". The only additional | |
1153 | functionality is simple quoting. The gdb command: | |
1154 | run a "b c d" f | |
1155 | will fill in argv with the three args "a", "b c d", "e". */ | |
1156 | static void | |
1157 | breakup_args (char *scratch, char **argv) | |
1158 | { | |
1159 | char *pp, *cp = scratch; | |
1160 | char quoting = 0; | |
1161 | ||
1162 | for (;;) | |
1163 | { | |
1164 | /* Scan past leading separators. */ | |
1165 | quoting = 0; | |
1166 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') | |
1167 | cp++; | |
1168 | ||
1169 | /* Break if at end of string. */ | |
1170 | if (*cp == '\0') | |
1171 | break; | |
1172 | ||
1173 | /* Take an arg. */ | |
1174 | if (*cp == '"') | |
1175 | { | |
1176 | cp++; | |
1177 | quoting = strchr (cp, '"') ? 1 : 0; | |
1178 | } | |
1179 | ||
1180 | *argv++ = cp; | |
1181 | ||
1182 | /* Scan for next arg separator. */ | |
1183 | pp = cp; | |
1184 | if (quoting) | |
1185 | cp = strchr (pp, '"'); | |
1186 | if ((cp == NULL) || (!quoting)) | |
1187 | cp = strchr (pp, ' '); | |
1188 | if (cp == NULL) | |
1189 | cp = strchr (pp, '\t'); | |
1190 | if (cp == NULL) | |
1191 | cp = strchr (pp, '\n'); | |
1192 | ||
1193 | /* No separators => end of string => break. */ | |
1194 | if (cp == NULL) | |
1195 | { | |
1196 | pp = cp; | |
1197 | break; | |
1198 | } | |
1199 | ||
1200 | /* Replace the separator with a terminator. */ | |
1201 | *cp++ = '\0'; | |
1202 | } | |
1203 | ||
1204 | /* Execv requires a null-terminated arg vector. */ | |
1205 | *argv = NULL; | |
1206 | } | |
1207 | ||
f6ac5f3d PA |
1208 | void |
1209 | nto_procfs_target::create_inferior (const char *exec_file, | |
1210 | const std::string &allargs, | |
1211 | char **env, int from_tty) | |
61bb466e KW |
1212 | { |
1213 | struct inheritance inherit; | |
1214 | pid_t pid; | |
1215 | int flags, errn; | |
1216 | char **argv, *args; | |
3cb3b8df | 1217 | const char *in = "", *out = "", *err = ""; |
61bb466e KW |
1218 | int fd, fds[3]; |
1219 | sigset_t set; | |
3cb3b8df | 1220 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
3fdfcbf1 | 1221 | struct inferior *inf; |
61bb466e | 1222 | |
7c5ded6a | 1223 | argv = xmalloc ((allargs.size () / (unsigned) 2 + 2) * |
61bb466e KW |
1224 | sizeof (*argv)); |
1225 | argv[0] = get_exec_file (1); | |
1226 | if (!argv[0]) | |
1227 | { | |
1228 | if (exec_file) | |
1229 | argv[0] = exec_file; | |
1230 | else | |
1231 | return; | |
1232 | } | |
1233 | ||
7c5ded6a | 1234 | args = xstrdup (allargs.c_str ()); |
609c3040 | 1235 | breakup_args (args, (exec_file != NULL) ? &argv[1] : &argv[0]); |
61bb466e KW |
1236 | |
1237 | argv = nto_parse_redirection (argv, &in, &out, &err); | |
1238 | ||
1239 | fds[0] = STDIN_FILENO; | |
1240 | fds[1] = STDOUT_FILENO; | |
1241 | fds[2] = STDERR_FILENO; | |
1242 | ||
1243 | /* If the user specified I/O via gdb's --tty= arg, use it, but only | |
1244 | if the i/o is not also being specified via redirection. */ | |
1245 | if (inferior_io_terminal) | |
1246 | { | |
1247 | if (!in[0]) | |
1248 | in = inferior_io_terminal; | |
1249 | if (!out[0]) | |
1250 | out = inferior_io_terminal; | |
1251 | if (!err[0]) | |
1252 | err = inferior_io_terminal; | |
1253 | } | |
1254 | ||
1255 | if (in[0]) | |
1256 | { | |
1257 | fd = open (in, O_RDONLY); | |
1258 | if (fd == -1) | |
1259 | perror (in); | |
1260 | else | |
1261 | fds[0] = fd; | |
1262 | } | |
1263 | if (out[0]) | |
1264 | { | |
1265 | fd = open (out, O_WRONLY); | |
1266 | if (fd == -1) | |
1267 | perror (out); | |
1268 | else | |
1269 | fds[1] = fd; | |
1270 | } | |
1271 | if (err[0]) | |
1272 | { | |
1273 | fd = open (err, O_WRONLY); | |
1274 | if (fd == -1) | |
1275 | perror (err); | |
1276 | else | |
1277 | fds[2] = fd; | |
1278 | } | |
1279 | ||
1280 | /* Clear any pending SIGUSR1's but keep the behavior the same. */ | |
1281 | signal (SIGUSR1, signal (SIGUSR1, SIG_IGN)); | |
1282 | ||
1283 | sigemptyset (&set); | |
1284 | sigaddset (&set, SIGUSR1); | |
1285 | sigprocmask (SIG_UNBLOCK, &set, NULL); | |
1286 | ||
1287 | memset (&inherit, 0, sizeof (inherit)); | |
1288 | ||
1289 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0) | |
1290 | { | |
d737fd7f | 1291 | inherit.nd = nto_node (); |
61bb466e KW |
1292 | inherit.flags |= SPAWN_SETND; |
1293 | inherit.flags &= ~SPAWN_EXEC; | |
1294 | } | |
1295 | inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD; | |
1296 | inherit.pgroup = SPAWN_NEWPGROUP; | |
1297 | pid = spawnp (argv[0], 3, fds, &inherit, argv, | |
1298 | ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0); | |
1299 | xfree (args); | |
1300 | ||
1301 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1302 | ||
1303 | if (pid == -1) | |
8a3fe4f8 | 1304 | error (_("Error spawning %s: %d (%s)"), argv[0], errno, |
d737fd7f | 1305 | safe_strerror (errno)); |
61bb466e KW |
1306 | |
1307 | if (fds[0] != STDIN_FILENO) | |
1308 | close (fds[0]); | |
1309 | if (fds[1] != STDOUT_FILENO) | |
1310 | close (fds[1]); | |
1311 | if (fds[2] != STDERR_FILENO) | |
1312 | close (fds[2]); | |
1313 | ||
1314 | inferior_ptid = do_attach (pid_to_ptid (pid)); | |
e8032dde | 1315 | procfs_update_thread_list (ops); |
61bb466e | 1316 | |
6c95b8df PA |
1317 | inf = current_inferior (); |
1318 | inferior_appeared (inf, pid); | |
3fdfcbf1 | 1319 | inf->attach_flag = 0; |
7f9f62ba | 1320 | |
61bb466e KW |
1321 | flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */ |
1322 | errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0); | |
1323 | if (errn != EOK) | |
1324 | { | |
1325 | /* FIXME: expected warning? */ | |
1326 | /* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n", | |
1327 | errn, strerror(errn) ); */ | |
1328 | } | |
6a3cb8e8 PA |
1329 | if (!target_is_pushed (ops)) |
1330 | push_target (ops); | |
223ffa71 | 1331 | target_terminal::init (); |
61bb466e | 1332 | |
61bb466e KW |
1333 | if (exec_bfd != NULL |
1334 | || (symfile_objfile != NULL && symfile_objfile->obfd != NULL)) | |
268a4a75 | 1335 | solib_create_inferior_hook (0); |
61bb466e KW |
1336 | } |
1337 | ||
f6ac5f3d PA |
1338 | void |
1339 | nto_procfs_target::interrupt () | |
61bb466e KW |
1340 | { |
1341 | devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0); | |
1342 | } | |
1343 | ||
f6ac5f3d PA |
1344 | void |
1345 | nto_procfs_target::kill () | |
61bb466e | 1346 | { |
bc1e6c81 | 1347 | target_mourn_inferior (inferior_ptid); |
61bb466e KW |
1348 | } |
1349 | ||
61bb466e KW |
1350 | /* Fill buf with regset and return devctl cmd to do the setting. Return |
1351 | -1 if we fail to get the regset. Store size of regset in regsize. */ | |
1352 | static int | |
1353 | get_regset (int regset, char *buf, int bufsize, int *regsize) | |
1354 | { | |
1355 | int dev_get, dev_set; | |
1356 | switch (regset) | |
1357 | { | |
1358 | case NTO_REG_GENERAL: | |
1359 | dev_get = DCMD_PROC_GETGREG; | |
1360 | dev_set = DCMD_PROC_SETGREG; | |
1361 | break; | |
1362 | ||
1363 | case NTO_REG_FLOAT: | |
1364 | dev_get = DCMD_PROC_GETFPREG; | |
1365 | dev_set = DCMD_PROC_SETFPREG; | |
1366 | break; | |
1367 | ||
1368 | case NTO_REG_ALT: | |
1369 | dev_get = DCMD_PROC_GETALTREG; | |
1370 | dev_set = DCMD_PROC_SETALTREG; | |
1371 | break; | |
1372 | ||
1373 | case NTO_REG_SYSTEM: | |
1374 | default: | |
1375 | return -1; | |
1376 | } | |
97c44116 | 1377 | if (devctl (ctl_fd, dev_get, buf, bufsize, regsize) != EOK) |
61bb466e KW |
1378 | return -1; |
1379 | ||
1380 | return dev_set; | |
1381 | } | |
1382 | ||
f6ac5f3d PA |
1383 | void |
1384 | nto_procfs_target::store_registers (struct regcache *regcache, int regno) | |
61bb466e KW |
1385 | { |
1386 | union | |
1387 | { | |
1388 | procfs_greg greg; | |
1389 | procfs_fpreg fpreg; | |
1390 | procfs_altreg altreg; | |
1391 | } | |
1392 | reg; | |
1393 | unsigned off; | |
1394 | int len, regset, regsize, dev_set, err; | |
1395 | char *data; | |
222312d3 | 1396 | ptid_t ptid = regcache->ptid (); |
61bb466e | 1397 | |
bcc0c096 | 1398 | if (ptid_equal (ptid, null_ptid)) |
61bb466e | 1399 | return; |
bcc0c096 | 1400 | procfs_set_thread (ptid); |
61bb466e KW |
1401 | |
1402 | if (regno == -1) | |
1403 | { | |
1404 | for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++) | |
1405 | { | |
1406 | dev_set = get_regset (regset, (char *) ®, | |
1407 | sizeof (reg), ®size); | |
1408 | if (dev_set == -1) | |
1409 | continue; | |
1410 | ||
56be3814 | 1411 | if (nto_regset_fill (regcache, regset, (char *) ®) == -1) |
61bb466e KW |
1412 | continue; |
1413 | ||
1414 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1415 | if (err != EOK) | |
1416 | fprintf_unfiltered (gdb_stderr, | |
1417 | "Warning unable to write regset %d: %s\n", | |
dc5dd1eb | 1418 | regno, safe_strerror (err)); |
61bb466e KW |
1419 | } |
1420 | } | |
1421 | else | |
1422 | { | |
1423 | regset = nto_regset_id (regno); | |
1424 | if (regset == -1) | |
1425 | return; | |
1426 | ||
1427 | dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size); | |
1428 | if (dev_set == -1) | |
1429 | return; | |
1430 | ||
ac7936df | 1431 | len = nto_register_area (regcache->arch (), |
60441ab9 | 1432 | regno, regset, &off); |
61bb466e KW |
1433 | |
1434 | if (len < 1) | |
1435 | return; | |
1436 | ||
34a79281 | 1437 | regcache->raw_collect (regno, (char *) ® + off); |
61bb466e KW |
1438 | |
1439 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1440 | if (err != EOK) | |
1441 | fprintf_unfiltered (gdb_stderr, | |
1442 | "Warning unable to write regset %d: %s\n", regno, | |
dc5dd1eb | 1443 | safe_strerror (err)); |
61bb466e KW |
1444 | } |
1445 | } | |
1446 | ||
2455069d UW |
1447 | /* Set list of signals to be handled in the target. */ |
1448 | ||
f6ac5f3d PA |
1449 | void |
1450 | nto_procfs_target::pass_signals (int numsigs, unsigned char *pass_signals) | |
61bb466e KW |
1451 | { |
1452 | int signo; | |
1453 | ||
2455069d UW |
1454 | sigfillset (&run.trace); |
1455 | ||
61bb466e KW |
1456 | for (signo = 1; signo < NSIG; signo++) |
1457 | { | |
2ea28649 | 1458 | int target_signo = gdb_signal_from_host (signo); |
2455069d UW |
1459 | if (target_signo < numsigs && pass_signals[target_signo]) |
1460 | sigdelset (&run.trace, signo); | |
61bb466e KW |
1461 | } |
1462 | } | |
1463 | ||
f6ac5f3d PA |
1464 | char * |
1465 | nto_procfs_target::pid_to_str (ptid_t ptid) | |
61bb466e KW |
1466 | { |
1467 | static char buf[1024]; | |
1468 | int pid, tid, n; | |
1469 | struct tidinfo *tip; | |
1470 | ||
1471 | pid = ptid_get_pid (ptid); | |
1472 | tid = ptid_get_tid (ptid); | |
1473 | ||
dc5dd1eb | 1474 | n = snprintf (buf, 1023, "process %d", pid); |
61bb466e KW |
1475 | |
1476 | #if 0 /* NYI */ | |
1477 | tip = procfs_thread_info (pid, tid); | |
1478 | if (tip != NULL) | |
dc5dd1eb | 1479 | snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state); |
61bb466e KW |
1480 | #endif |
1481 | ||
1482 | return buf; | |
1483 | } | |
1484 | ||
132f8e03 PA |
1485 | /* to_can_run implementation for "target procfs". Note this really |
1486 | means "can this target be the default run target", which there can | |
1487 | be only one, and we make it be "target native" like other ports. | |
1488 | "target procfs <node>" wouldn't make sense as default run target, as | |
1489 | it needs <node>. */ | |
ee8e9165 | 1490 | |
f6ac5f3d PA |
1491 | int |
1492 | nto_procfs_target::can_run () | |
132f8e03 PA |
1493 | { |
1494 | return 0; | |
1495 | } | |
1496 | ||
1497 | /* "target procfs". */ | |
f6ac5f3d | 1498 | static nto_procfs_target_procfs nto_procfs_ops; |
132f8e03 | 1499 | |
6a3cb8e8 | 1500 | /* "target native". */ |
f6ac5f3d | 1501 | static nto_procfs_target_native nto_native_ops; |
6a3cb8e8 | 1502 | |
132f8e03 PA |
1503 | /* Create the "native" and "procfs" targets. */ |
1504 | ||
1505 | static void | |
1506 | init_procfs_targets (void) | |
61bb466e | 1507 | { |
132f8e03 | 1508 | /* Register "target native". This is the default run target. */ |
d9f719f1 PA |
1509 | add_target (nto_native_target_info, inf_child_open_target); |
1510 | set_native_target (&nto_native_ops); | |
132f8e03 PA |
1511 | |
1512 | /* Register "target procfs <node>". */ | |
d9f719f1 | 1513 | add_target (nto_procfs_target_info, inf_child_open_target); |
61bb466e KW |
1514 | } |
1515 | ||
1516 | #define OSTYPE_NTO 1 | |
1517 | ||
1518 | void | |
dc5dd1eb | 1519 | _initialize_procfs (void) |
61bb466e KW |
1520 | { |
1521 | sigset_t set; | |
1522 | ||
132f8e03 | 1523 | init_procfs_targets (); |
61bb466e KW |
1524 | |
1525 | /* We use SIGUSR1 to gain control after we block waiting for a process. | |
1526 | We use sigwaitevent to wait. */ | |
1527 | sigemptyset (&set); | |
1528 | sigaddset (&set, SIGUSR1); | |
1529 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1530 | ||
2455069d UW |
1531 | /* Initially, make sure all signals are reported. */ |
1532 | sigfillset (&run.trace); | |
61bb466e KW |
1533 | |
1534 | /* Stuff some information. */ | |
1535 | nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags; | |
1536 | nto_cpuinfo_valid = 1; | |
1537 | ||
1bedd215 AC |
1538 | add_info ("pidlist", procfs_pidlist, _("pidlist")); |
1539 | add_info ("meminfo", procfs_meminfo, _("memory information")); | |
d737fd7f KW |
1540 | |
1541 | nto_is_nto_target = procfs_is_nto_target; | |
61bb466e KW |
1542 | } |
1543 | ||
1544 | ||
1545 | static int | |
f486487f | 1546 | procfs_hw_watchpoint (int addr, int len, enum target_hw_bp_type type) |
61bb466e KW |
1547 | { |
1548 | procfs_break brk; | |
1549 | ||
1550 | switch (type) | |
1551 | { | |
f486487f | 1552 | case hw_read: |
61bb466e KW |
1553 | brk.type = _DEBUG_BREAK_RD; |
1554 | break; | |
f486487f | 1555 | case hw_access: |
61bb466e KW |
1556 | brk.type = _DEBUG_BREAK_RW; |
1557 | break; | |
1558 | default: /* Modify. */ | |
1559 | /* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */ | |
1560 | brk.type = _DEBUG_BREAK_RW; | |
1561 | } | |
1562 | brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */ | |
1563 | brk.addr = addr; | |
1564 | brk.size = len; | |
1565 | ||
1566 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1567 | if (errno != EOK) | |
1568 | { | |
9b20d036 | 1569 | perror (_("Failed to set hardware watchpoint")); |
61bb466e KW |
1570 | return -1; |
1571 | } | |
1572 | return 0; | |
1573 | } | |
1574 | ||
57810aa7 | 1575 | bool |
f6ac5f3d PA |
1576 | nto_procfs_target::can_use_hw_breakpoint (enum bptype type, |
1577 | int cnt, int othertype) | |
61bb466e KW |
1578 | { |
1579 | return 1; | |
1580 | } | |
1581 | ||
f6ac5f3d PA |
1582 | int |
1583 | nto_procfs_target::remove_hw_watchpoint (CORE_ADDR addr, int len, | |
1584 | enum target_hw_bp_type type, | |
1585 | struct expression *cond) | |
61bb466e KW |
1586 | { |
1587 | return procfs_hw_watchpoint (addr, -1, type); | |
1588 | } | |
1589 | ||
f6ac5f3d PA |
1590 | int |
1591 | nto_procfs_target::insert_hw_watchpoint (CORE_ADDR addr, int len, | |
1592 | enum target_hw_bp_type type, | |
1593 | struct expression *cond) | |
61bb466e KW |
1594 | { |
1595 | return procfs_hw_watchpoint (addr, len, type); | |
1596 | } | |
1597 | ||
57810aa7 | 1598 | bool |
f6ac5f3d | 1599 | nto_procfs_target::stopped_by_watchpoint () |
61bb466e | 1600 | { |
a9889169 AR |
1601 | /* NOTE: nto_stopped_by_watchpoint will be called ONLY while we are |
1602 | stopped due to a SIGTRAP. This assumes gdb works in 'all-stop' mode; | |
1603 | future gdb versions will likely run in 'non-stop' mode in which case | |
1604 | we will have to store/examine statuses per thread in question. | |
1605 | Until then, this will work fine. */ | |
1606 | ||
1607 | struct inferior *inf = current_inferior (); | |
1608 | struct nto_inferior_data *inf_data; | |
1609 | ||
1610 | gdb_assert (inf != NULL); | |
1611 | ||
1612 | inf_data = nto_inferior_data (inf); | |
1613 | ||
1614 | return inf_data->stopped_flags | |
1615 | & (_DEBUG_FLAG_TRACE_RD | |
1616 | | _DEBUG_FLAG_TRACE_WR | |
1617 | | _DEBUG_FLAG_TRACE_MODIFY); | |
61bb466e | 1618 | } |