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 | ||
f6ac5f3d PA |
122 | const char *extra_thread_info (struct thread_info *) override; |
123 | ||
124 | char *pid_to_exec_file (int pid) override; | |
125 | }; | |
126 | ||
127 | /* For "target native". */ | |
f6ac5f3d | 128 | |
d9f719f1 PA |
129 | static const target_info nto_native_target_info = { |
130 | "native", | |
131 | N_("QNX Neutrino local process"), | |
132 | N_("QNX Neutrino local process (started by the \"run\" command).") | |
133 | }; | |
f6ac5f3d | 134 | |
d9f719f1 PA |
135 | class nto_procfs_target_native final : public nto_procfs_target |
136 | { | |
137 | const target_info &info () const override | |
138 | { return nto_native_target_info; } | |
f6ac5f3d PA |
139 | }; |
140 | ||
141 | /* For "target procfs <node>". */ | |
f6ac5f3d | 142 | |
d9f719f1 PA |
143 | static const target_info nto_procfs_target_info = { |
144 | "procfs", | |
145 | N_("QNX Neutrino local or remote process"), | |
65e65158 | 146 | N_("QNX Neutrino process. target procfs NODE") |
d9f719f1 | 147 | }; |
f6ac5f3d | 148 | |
d9f719f1 PA |
149 | struct nto_procfs_target_procfs final : public nto_procfs_target |
150 | { | |
151 | const target_info &info () const override | |
152 | { return nto_procfs_target_info; } | |
f6ac5f3d PA |
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 | ||
cc6bcb54 | 296 | tid = ptid.tid (); |
61bb466e KW |
297 | devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0); |
298 | } | |
299 | ||
57810aa7 PA |
300 | /* Return true if the thread TH is still alive. */ |
301 | ||
302 | bool | |
f6ac5f3d | 303 | nto_procfs_target::thread_alive (ptid_t ptid) |
61bb466e KW |
304 | { |
305 | pid_t tid; | |
745a434e AR |
306 | pid_t pid; |
307 | procfs_status status; | |
308 | int err; | |
61bb466e | 309 | |
cc6bcb54 | 310 | tid = ptid.tid (); |
e99b03dc | 311 | pid = ptid.pid (); |
745a434e AR |
312 | |
313 | if (kill (pid, 0) == -1) | |
57810aa7 | 314 | return false; |
745a434e AR |
315 | |
316 | status.tid = tid; | |
317 | if ((err = devctl (ctl_fd, DCMD_PROC_TIDSTATUS, | |
318 | &status, sizeof (status), 0)) != EOK) | |
57810aa7 | 319 | return false; |
745a434e AR |
320 | |
321 | /* Thread is alive or dead but not yet joined, | |
322 | or dead and there is an alive (or dead unjoined) thread with | |
323 | higher tid. | |
324 | ||
325 | If the tid is not the same as requested, requested tid is dead. */ | |
326 | return (status.tid == tid) && (status.state != STATE_DEAD); | |
327 | } | |
328 | ||
329 | static void | |
330 | update_thread_private_data_name (struct thread_info *new_thread, | |
331 | const char *newname) | |
332 | { | |
7aabaf9d | 333 | nto_thread_info *pti = get_nto_thread_info (new_thread); |
745a434e AR |
334 | |
335 | gdb_assert (newname != NULL); | |
336 | gdb_assert (new_thread != NULL); | |
7aabaf9d SM |
337 | |
338 | if (pti) | |
745a434e | 339 | { |
7aabaf9d SM |
340 | pti = new nto_thread_info; |
341 | new_thread->priv.reset (pti); | |
745a434e | 342 | } |
7aabaf9d SM |
343 | |
344 | pti->name = newname; | |
745a434e AR |
345 | } |
346 | ||
347 | static void | |
348 | update_thread_private_data (struct thread_info *new_thread, | |
349 | pthread_t tid, int state, int flags) | |
350 | { | |
745a434e AR |
351 | procfs_info pidinfo; |
352 | struct _thread_name *tn; | |
353 | procfs_threadctl tctl; | |
354 | ||
355 | #if _NTO_VERSION > 630 | |
356 | gdb_assert (new_thread != NULL); | |
357 | ||
358 | if (devctl (ctl_fd, DCMD_PROC_INFO, &pidinfo, | |
359 | sizeof(pidinfo), 0) != EOK) | |
360 | return; | |
361 | ||
362 | memset (&tctl, 0, sizeof (tctl)); | |
363 | tctl.cmd = _NTO_TCTL_NAME; | |
364 | tn = (struct _thread_name *) (&tctl.data); | |
365 | ||
366 | /* Fetch name for the given thread. */ | |
367 | tctl.tid = tid; | |
368 | tn->name_buf_len = sizeof (tctl.data) - sizeof (*tn); | |
369 | tn->new_name_len = -1; /* Getting, not setting. */ | |
370 | if (devctl (ctl_fd, DCMD_PROC_THREADCTL, &tctl, sizeof (tctl), NULL) != EOK) | |
371 | tn->name_buf[0] = '\0'; | |
372 | ||
373 | tn->name_buf[_NTO_THREAD_NAME_MAX] = '\0'; | |
374 | ||
375 | update_thread_private_data_name (new_thread, tn->name_buf); | |
376 | ||
7aabaf9d | 377 | nto_thread_info *pti = get_nto_thread_info (new_thread); |
745a434e AR |
378 | pti->tid = tid; |
379 | pti->state = state; | |
380 | pti->flags = flags; | |
381 | #endif /* _NTO_VERSION */ | |
61bb466e KW |
382 | } |
383 | ||
f6ac5f3d PA |
384 | void |
385 | nto_procfs_target::update_thread_list () | |
61bb466e KW |
386 | { |
387 | procfs_status status; | |
388 | pid_t pid; | |
389 | ptid_t ptid; | |
745a434e AR |
390 | pthread_t tid; |
391 | struct thread_info *new_thread; | |
61bb466e KW |
392 | |
393 | if (ctl_fd == -1) | |
394 | return; | |
395 | ||
e8032dde PA |
396 | prune_threads (); |
397 | ||
e99b03dc | 398 | pid = inferior_ptid.pid (); |
61bb466e | 399 | |
745a434e AR |
400 | status.tid = 1; |
401 | ||
402 | for (tid = 1;; ++tid) | |
61bb466e | 403 | { |
745a434e AR |
404 | if (status.tid == tid |
405 | && (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0) | |
406 | != EOK)) | |
61bb466e | 407 | break; |
745a434e AR |
408 | if (status.tid != tid) |
409 | /* The reason why this would not be equal is that devctl might have | |
410 | returned different tid, meaning the requested tid no longer exists | |
411 | (e.g. thread exited). */ | |
412 | continue; | |
fd79271b | 413 | ptid = ptid_t (pid, 0, tid); |
745a434e AR |
414 | new_thread = find_thread_ptid (ptid); |
415 | if (!new_thread) | |
416 | new_thread = add_thread (ptid); | |
417 | update_thread_private_data (new_thread, tid, status.state, 0); | |
418 | status.tid++; | |
61bb466e KW |
419 | } |
420 | return; | |
421 | } | |
422 | ||
774ee6d2 | 423 | static void |
1d12d88f | 424 | procfs_pidlist (const char *args, int from_tty) |
61bb466e | 425 | { |
61bb466e | 426 | struct dirent *dirp = NULL; |
609c3040 | 427 | char buf[PATH_MAX]; |
61bb466e KW |
428 | procfs_info *pidinfo = NULL; |
429 | procfs_debuginfo *info = NULL; | |
430 | procfs_status *status = NULL; | |
431 | pid_t num_threads = 0; | |
432 | pid_t pid; | |
433 | char name[512]; | |
609c3040 | 434 | char procfs_dir[PATH_MAX]; |
61bb466e | 435 | |
609c3040 AR |
436 | snprintf (procfs_dir, sizeof (procfs_dir), "%s%s", |
437 | (nodestr != NULL) ? nodestr : "", "/proc"); | |
438 | ||
f0b3976b | 439 | gdb_dir_up dp (opendir (procfs_dir)); |
61bb466e KW |
440 | if (dp == NULL) |
441 | { | |
dc5dd1eb | 442 | fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)", |
609c3040 | 443 | procfs_dir, errno, safe_strerror (errno)); |
61bb466e KW |
444 | return; |
445 | } | |
446 | ||
447 | /* Start scan at first pid. */ | |
f0b3976b | 448 | rewinddir (dp.get ()); |
61bb466e KW |
449 | |
450 | do | |
451 | { | |
452 | /* Get the right pid and procfs path for the pid. */ | |
453 | do | |
454 | { | |
f0b3976b | 455 | dirp = readdir (dp.get ()); |
61bb466e | 456 | if (dirp == NULL) |
f0b3976b | 457 | return; |
609c3040 AR |
458 | snprintf (buf, sizeof (buf), "%s%s/%s/as", |
459 | (nodestr != NULL) ? nodestr : "", | |
460 | "/proc", dirp->d_name); | |
61bb466e KW |
461 | pid = atoi (dirp->d_name); |
462 | } | |
463 | while (pid == 0); | |
464 | ||
0df8b418 | 465 | /* Open the procfs path. */ |
5dc1a704 TT |
466 | scoped_fd fd (open (buf, O_RDONLY)); |
467 | if (fd.get () == -1) | |
61bb466e | 468 | { |
dc5dd1eb | 469 | fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n", |
d737fd7f | 470 | buf, errno, safe_strerror (errno)); |
609c3040 | 471 | continue; |
61bb466e KW |
472 | } |
473 | ||
474 | pidinfo = (procfs_info *) buf; | |
5dc1a704 | 475 | if (devctl (fd.get (), DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK) |
61bb466e | 476 | { |
dc5dd1eb | 477 | fprintf_unfiltered (gdb_stderr, |
d737fd7f KW |
478 | "devctl DCMD_PROC_INFO failed - %d (%s)\n", |
479 | errno, safe_strerror (errno)); | |
61bb466e KW |
480 | break; |
481 | } | |
482 | num_threads = pidinfo->num_threads; | |
483 | ||
484 | info = (procfs_debuginfo *) buf; | |
5dc1a704 TT |
485 | if (devctl (fd.get (), DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0) |
486 | != EOK) | |
61bb466e KW |
487 | strcpy (name, "unavailable"); |
488 | else | |
489 | strcpy (name, info->path); | |
490 | ||
491 | /* Collect state info on all the threads. */ | |
492 | status = (procfs_status *) buf; | |
493 | for (status->tid = 1; status->tid <= num_threads; status->tid++) | |
494 | { | |
609c3040 | 495 | const int err |
5dc1a704 | 496 | = devctl (fd.get (), DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0); |
609c3040 AR |
497 | printf_filtered ("%s - %d", name, pid); |
498 | if (err == EOK && status->tid != 0) | |
499 | printf_filtered ("/%d\n", status->tid); | |
500 | else | |
501 | { | |
502 | printf_filtered ("\n"); | |
503 | break; | |
504 | } | |
61bb466e | 505 | } |
61bb466e KW |
506 | } |
507 | while (dirp != NULL); | |
61bb466e KW |
508 | } |
509 | ||
774ee6d2 | 510 | static void |
1d12d88f | 511 | procfs_meminfo (const char *args, int from_tty) |
61bb466e KW |
512 | { |
513 | procfs_mapinfo *mapinfos = NULL; | |
514 | static int num_mapinfos = 0; | |
515 | procfs_mapinfo *mapinfo_p, *mapinfo_p2; | |
516 | int flags = ~0, err, num, i, j; | |
517 | ||
518 | struct | |
519 | { | |
520 | procfs_debuginfo info; | |
521 | char buff[_POSIX_PATH_MAX]; | |
522 | } map; | |
523 | ||
524 | struct info | |
525 | { | |
526 | unsigned addr; | |
527 | unsigned size; | |
528 | unsigned flags; | |
529 | unsigned debug_vaddr; | |
530 | unsigned long long offset; | |
531 | }; | |
532 | ||
533 | struct printinfo | |
534 | { | |
535 | unsigned long long ino; | |
536 | unsigned dev; | |
537 | struct info text; | |
538 | struct info data; | |
539 | char name[256]; | |
540 | } printme; | |
541 | ||
542 | /* Get the number of map entrys. */ | |
543 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num); | |
544 | if (err != EOK) | |
545 | { | |
d737fd7f KW |
546 | printf ("failed devctl num mapinfos - %d (%s)\n", err, |
547 | safe_strerror (err)); | |
61bb466e KW |
548 | return; |
549 | } | |
550 | ||
774ee6d2 | 551 | mapinfos = XNEWVEC (procfs_mapinfo, num); |
61bb466e KW |
552 | |
553 | num_mapinfos = num; | |
554 | mapinfo_p = mapinfos; | |
555 | ||
556 | /* Fill the map entrys. */ | |
557 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, mapinfo_p, num | |
558 | * sizeof (procfs_mapinfo), &num); | |
559 | if (err != EOK) | |
560 | { | |
5483d879 | 561 | printf ("failed devctl mapinfos - %d (%s)\n", err, safe_strerror (err)); |
61bb466e KW |
562 | xfree (mapinfos); |
563 | return; | |
564 | } | |
565 | ||
325fac50 | 566 | num = std::min (num, num_mapinfos); |
61bb466e KW |
567 | |
568 | /* Run through the list of mapinfos, and store the data and text info | |
569 | so we can print it at the bottom of the loop. */ | |
570 | for (mapinfo_p = mapinfos, i = 0; i < num; i++, mapinfo_p++) | |
571 | { | |
572 | if (!(mapinfo_p->flags & flags)) | |
573 | mapinfo_p->ino = 0; | |
574 | ||
575 | if (mapinfo_p->ino == 0) /* Already visited. */ | |
576 | continue; | |
577 | ||
578 | map.info.vaddr = mapinfo_p->vaddr; | |
579 | ||
580 | err = devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
581 | if (err != EOK) | |
582 | continue; | |
583 | ||
584 | memset (&printme, 0, sizeof printme); | |
585 | printme.dev = mapinfo_p->dev; | |
586 | printme.ino = mapinfo_p->ino; | |
587 | printme.text.addr = mapinfo_p->vaddr; | |
588 | printme.text.size = mapinfo_p->size; | |
589 | printme.text.flags = mapinfo_p->flags; | |
590 | printme.text.offset = mapinfo_p->offset; | |
591 | printme.text.debug_vaddr = map.info.vaddr; | |
592 | strcpy (printme.name, map.info.path); | |
593 | ||
594 | /* Check for matching data. */ | |
595 | for (mapinfo_p2 = mapinfos, j = 0; j < num; j++, mapinfo_p2++) | |
596 | { | |
597 | if (mapinfo_p2->vaddr != mapinfo_p->vaddr | |
598 | && mapinfo_p2->ino == mapinfo_p->ino | |
599 | && mapinfo_p2->dev == mapinfo_p->dev) | |
600 | { | |
601 | map.info.vaddr = mapinfo_p2->vaddr; | |
602 | err = | |
603 | devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
604 | if (err != EOK) | |
605 | continue; | |
606 | ||
607 | if (strcmp (map.info.path, printme.name)) | |
608 | continue; | |
609 | ||
610 | /* Lower debug_vaddr is always text, if nessessary, swap. */ | |
611 | if ((int) map.info.vaddr < (int) printme.text.debug_vaddr) | |
612 | { | |
613 | memcpy (&(printme.data), &(printme.text), | |
614 | sizeof (printme.data)); | |
615 | printme.text.addr = mapinfo_p2->vaddr; | |
616 | printme.text.size = mapinfo_p2->size; | |
617 | printme.text.flags = mapinfo_p2->flags; | |
618 | printme.text.offset = mapinfo_p2->offset; | |
619 | printme.text.debug_vaddr = map.info.vaddr; | |
620 | } | |
621 | else | |
622 | { | |
623 | printme.data.addr = mapinfo_p2->vaddr; | |
624 | printme.data.size = mapinfo_p2->size; | |
625 | printme.data.flags = mapinfo_p2->flags; | |
626 | printme.data.offset = mapinfo_p2->offset; | |
627 | printme.data.debug_vaddr = map.info.vaddr; | |
628 | } | |
629 | mapinfo_p2->ino = 0; | |
630 | } | |
631 | } | |
632 | mapinfo_p->ino = 0; | |
633 | ||
634 | printf_filtered ("%s\n", printme.name); | |
635 | printf_filtered ("\ttext=%08x bytes @ 0x%08x\n", printme.text.size, | |
636 | printme.text.addr); | |
637 | printf_filtered ("\t\tflags=%08x\n", printme.text.flags); | |
638 | printf_filtered ("\t\tdebug=%08x\n", printme.text.debug_vaddr); | |
2244ba2e | 639 | printf_filtered ("\t\toffset=%s\n", phex (printme.text.offset, 8)); |
61bb466e KW |
640 | if (printme.data.size) |
641 | { | |
642 | printf_filtered ("\tdata=%08x bytes @ 0x%08x\n", printme.data.size, | |
643 | printme.data.addr); | |
644 | printf_filtered ("\t\tflags=%08x\n", printme.data.flags); | |
645 | printf_filtered ("\t\tdebug=%08x\n", printme.data.debug_vaddr); | |
2244ba2e | 646 | printf_filtered ("\t\toffset=%s\n", phex (printme.data.offset, 8)); |
61bb466e KW |
647 | } |
648 | printf_filtered ("\tdev=0x%x\n", printme.dev); | |
649 | printf_filtered ("\tino=0x%x\n", (unsigned int) printme.ino); | |
650 | } | |
651 | xfree (mapinfos); | |
652 | return; | |
653 | } | |
654 | ||
655 | /* Print status information about what we're accessing. */ | |
f6ac5f3d PA |
656 | void |
657 | nto_procfs_target::files_info () | |
61bb466e | 658 | { |
181e7f93 PA |
659 | struct inferior *inf = current_inferior (); |
660 | ||
61bb466e | 661 | printf_unfiltered ("\tUsing the running image of %s %s via %s.\n", |
3fdfcbf1 | 662 | inf->attach_flag ? "attached" : "child", |
609c3040 AR |
663 | target_pid_to_str (inferior_ptid), |
664 | (nodestr != NULL) ? nodestr : "local node"); | |
61bb466e KW |
665 | } |
666 | ||
e5343fde AR |
667 | /* Target to_pid_to_exec_file implementation. */ |
668 | ||
f6ac5f3d PA |
669 | char * |
670 | nto_procfs_target::pid_to_exec_file (const int pid) | |
e5343fde AR |
671 | { |
672 | int proc_fd; | |
673 | static char proc_path[PATH_MAX]; | |
674 | ssize_t rd; | |
675 | ||
676 | /* Read exe file name. */ | |
677 | snprintf (proc_path, sizeof (proc_path), "%s/proc/%d/exefile", | |
678 | (nodestr != NULL) ? nodestr : "", pid); | |
679 | proc_fd = open (proc_path, O_RDONLY); | |
680 | if (proc_fd == -1) | |
681 | return NULL; | |
682 | ||
683 | rd = read (proc_fd, proc_path, sizeof (proc_path) - 1); | |
684 | close (proc_fd); | |
685 | if (rd <= 0) | |
686 | { | |
687 | proc_path[0] = '\0'; | |
688 | return NULL; | |
689 | } | |
690 | proc_path[rd] = '\0'; | |
691 | return proc_path; | |
692 | } | |
693 | ||
61bb466e | 694 | /* Attach to process PID, then initialize for debugging it. */ |
f6ac5f3d PA |
695 | void |
696 | nto_procfs_target::attach (const char *args, int from_tty) | |
61bb466e KW |
697 | { |
698 | char *exec_file; | |
699 | int pid; | |
181e7f93 | 700 | struct inferior *inf; |
61bb466e | 701 | |
74164c56 | 702 | pid = parse_pid_to_attach (args); |
61bb466e KW |
703 | |
704 | if (pid == getpid ()) | |
8a3fe4f8 | 705 | error (_("Attaching GDB to itself is not a good idea...")); |
61bb466e KW |
706 | |
707 | if (from_tty) | |
708 | { | |
709 | exec_file = (char *) get_exec_file (0); | |
710 | ||
711 | if (exec_file) | |
712 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
f2907e49 | 713 | target_pid_to_str (ptid_t (pid))); |
61bb466e KW |
714 | else |
715 | printf_unfiltered ("Attaching to %s\n", | |
f2907e49 | 716 | target_pid_to_str (ptid_t (pid))); |
61bb466e KW |
717 | |
718 | gdb_flush (gdb_stdout); | |
719 | } | |
f2907e49 | 720 | inferior_ptid = do_attach (ptid_t (pid)); |
6c95b8df PA |
721 | inf = current_inferior (); |
722 | inferior_appeared (inf, pid); | |
181e7f93 | 723 | inf->attach_flag = 1; |
7f9f62ba | 724 | |
6a3cb8e8 PA |
725 | if (!target_is_pushed (ops)) |
726 | push_target (ops); | |
7f9f62ba | 727 | |
e8032dde | 728 | procfs_update_thread_list (ops); |
61bb466e KW |
729 | } |
730 | ||
f6ac5f3d PA |
731 | void |
732 | nto_procfs_target::post_attach (pid_t pid) | |
61bb466e | 733 | { |
61bb466e | 734 | if (exec_bfd) |
268a4a75 | 735 | solib_create_inferior_hook (0); |
61bb466e KW |
736 | } |
737 | ||
738 | static ptid_t | |
739 | do_attach (ptid_t ptid) | |
740 | { | |
741 | procfs_status status; | |
742 | struct sigevent event; | |
dc5dd1eb | 743 | char path[PATH_MAX]; |
61bb466e | 744 | |
609c3040 | 745 | snprintf (path, PATH_MAX - 1, "%s%s/%d/as", |
e99b03dc | 746 | (nodestr != NULL) ? nodestr : "", "/proc", ptid.pid ()); |
61bb466e KW |
747 | ctl_fd = open (path, O_RDWR); |
748 | if (ctl_fd == -1) | |
8a3fe4f8 | 749 | error (_("Couldn't open proc file %s, error %d (%s)"), path, errno, |
dc5dd1eb | 750 | safe_strerror (errno)); |
61bb466e | 751 | if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK) |
8a3fe4f8 | 752 | error (_("Couldn't stop process")); |
61bb466e KW |
753 | |
754 | /* Define a sigevent for process stopped notification. */ | |
755 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
756 | event.sigev_signo = SIGUSR1; | |
757 | event.sigev_code = 0; | |
758 | event.sigev_value.sival_ptr = NULL; | |
759 | event.sigev_priority = -1; | |
760 | devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0); | |
761 | ||
762 | if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK | |
763 | && status.flags & _DEBUG_FLAG_STOPPED) | |
e99b03dc | 764 | SignalKill (nto_node (), ptid.pid (), 0, SIGCONT, 0, 0); |
61bb466e | 765 | nto_init_solib_absolute_prefix (); |
e99b03dc | 766 | return ptid_t (ptid.pid (), 0, status.tid); |
61bb466e KW |
767 | } |
768 | ||
769 | /* Ask the user what to do when an interrupt is received. */ | |
770 | static void | |
dc5dd1eb | 771 | interrupt_query (void) |
61bb466e | 772 | { |
9e2f0ad4 HZ |
773 | if (query (_("Interrupted while waiting for the program.\n\ |
774 | Give up (and stop debugging it)? "))) | |
61bb466e | 775 | { |
bc1e6c81 | 776 | target_mourn_inferior (inferior_ptid); |
039e3c22 | 777 | quit (); |
61bb466e | 778 | } |
61bb466e KW |
779 | } |
780 | ||
781 | /* The user typed ^C twice. */ | |
782 | static void | |
bfedc46a | 783 | nto_handle_sigint_twice (int signo) |
61bb466e KW |
784 | { |
785 | signal (signo, ofunc); | |
786 | interrupt_query (); | |
bfedc46a | 787 | signal (signo, nto_handle_sigint_twice); |
61bb466e KW |
788 | } |
789 | ||
790 | static void | |
bfedc46a | 791 | nto_handle_sigint (int signo) |
61bb466e KW |
792 | { |
793 | /* If this doesn't work, try more severe steps. */ | |
bfedc46a | 794 | signal (signo, nto_handle_sigint_twice); |
61bb466e | 795 | |
e671cd59 | 796 | target_interrupt (); |
61bb466e KW |
797 | } |
798 | ||
f6ac5f3d PA |
799 | sptid_t |
800 | nto_procfs_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus, | |
801 | int options) | |
61bb466e KW |
802 | { |
803 | sigset_t set; | |
804 | siginfo_t info; | |
805 | procfs_status status; | |
806 | static int exit_signo = 0; /* To track signals that cause termination. */ | |
807 | ||
808 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
809 | ||
d7e15655 | 810 | if (inferior_ptid == null_ptid) |
61bb466e KW |
811 | { |
812 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 813 | ourstatus->value.sig = GDB_SIGNAL_0; |
61bb466e KW |
814 | exit_signo = 0; |
815 | return null_ptid; | |
816 | } | |
817 | ||
818 | sigemptyset (&set); | |
819 | sigaddset (&set, SIGUSR1); | |
820 | ||
821 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
822 | while (!(status.flags & _DEBUG_FLAG_ISTOP)) | |
823 | { | |
a40805d4 | 824 | ofunc = signal (SIGINT, nto_handle_sigint); |
61bb466e KW |
825 | sigwaitinfo (&set, &info); |
826 | signal (SIGINT, ofunc); | |
827 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
828 | } | |
829 | ||
a9889169 AR |
830 | nto_inferior_data (NULL)->stopped_flags = status.flags; |
831 | nto_inferior_data (NULL)->stopped_pc = status.ip; | |
832 | ||
61bb466e KW |
833 | if (status.flags & _DEBUG_FLAG_SSTEP) |
834 | { | |
835 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 836 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
837 | } |
838 | /* Was it a breakpoint? */ | |
839 | else if (status.flags & _DEBUG_FLAG_TRACE) | |
840 | { | |
841 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 842 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
843 | } |
844 | else if (status.flags & _DEBUG_FLAG_ISTOP) | |
845 | { | |
846 | switch (status.why) | |
847 | { | |
848 | case _DEBUG_WHY_SIGNALLED: | |
849 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
850 | ourstatus->value.sig = | |
2ea28649 | 851 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
852 | exit_signo = 0; |
853 | break; | |
854 | case _DEBUG_WHY_FAULTED: | |
855 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
856 | if (status.info.si_signo == SIGTRAP) | |
857 | { | |
858 | ourstatus->value.sig = 0; | |
859 | exit_signo = 0; | |
860 | } | |
861 | else | |
862 | { | |
863 | ourstatus->value.sig = | |
2ea28649 | 864 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
865 | exit_signo = ourstatus->value.sig; |
866 | } | |
867 | break; | |
868 | ||
869 | case _DEBUG_WHY_TERMINATED: | |
870 | { | |
871 | int waitval = 0; | |
872 | ||
e99b03dc | 873 | waitpid (inferior_ptid.pid (), &waitval, WNOHANG); |
61bb466e KW |
874 | if (exit_signo) |
875 | { | |
876 | /* Abnormal death. */ | |
877 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
878 | ourstatus->value.sig = exit_signo; | |
879 | } | |
880 | else | |
881 | { | |
882 | /* Normal death. */ | |
883 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
884 | ourstatus->value.integer = WEXITSTATUS (waitval); | |
885 | } | |
886 | exit_signo = 0; | |
887 | break; | |
888 | } | |
889 | ||
890 | case _DEBUG_WHY_REQUESTED: | |
891 | /* We are assuming a requested stop is due to a SIGINT. */ | |
892 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 893 | ourstatus->value.sig = GDB_SIGNAL_INT; |
61bb466e KW |
894 | exit_signo = 0; |
895 | break; | |
896 | } | |
897 | } | |
898 | ||
fd79271b | 899 | return ptid_t (status.pid, 0, status.tid); |
61bb466e KW |
900 | } |
901 | ||
902 | /* Read the current values of the inferior's registers, both the | |
903 | general register set and floating point registers (if supported) | |
904 | and update gdb's idea of their current values. */ | |
f6ac5f3d PA |
905 | void |
906 | nto_procfs_target::fetch_registers (struct regcache *regcache, int regno) | |
61bb466e KW |
907 | { |
908 | union | |
909 | { | |
910 | procfs_greg greg; | |
911 | procfs_fpreg fpreg; | |
912 | procfs_altreg altreg; | |
913 | } | |
914 | reg; | |
915 | int regsize; | |
916 | ||
222312d3 | 917 | procfs_set_thread (regcache->ptid ()); |
61bb466e | 918 | if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK) |
56be3814 | 919 | nto_supply_gregset (regcache, (char *) ®.greg); |
61bb466e KW |
920 | if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size) |
921 | == EOK) | |
56be3814 | 922 | nto_supply_fpregset (regcache, (char *) ®.fpreg); |
61bb466e KW |
923 | if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size) |
924 | == EOK) | |
56be3814 | 925 | nto_supply_altregset (regcache, (char *) ®.altreg); |
61bb466e KW |
926 | } |
927 | ||
9d46c4e5 PA |
928 | /* Helper for procfs_xfer_partial that handles memory transfers. |
929 | Arguments are like target_xfer_partial. */ | |
61bb466e | 930 | |
9d46c4e5 PA |
931 | static enum target_xfer_status |
932 | procfs_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, | |
933 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
61bb466e | 934 | { |
9d46c4e5 PA |
935 | int nbytes; |
936 | ||
937 | if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) != (off_t) memaddr) | |
938 | return TARGET_XFER_E_IO; | |
939 | ||
940 | if (writebuf != NULL) | |
941 | nbytes = write (ctl_fd, writebuf, len); | |
942 | else | |
943 | nbytes = read (ctl_fd, readbuf, len); | |
944 | if (nbytes <= 0) | |
945 | return TARGET_XFER_E_IO; | |
946 | *xfered_len = nbytes; | |
947 | return TARGET_XFER_OK; | |
948 | } | |
949 | ||
950 | /* Target to_xfer_partial implementation. */ | |
61bb466e | 951 | |
f6ac5f3d PA |
952 | enum target_xfer_status |
953 | nto_procfs_target::xfer_partial (enum target_object object, | |
954 | const char *annex, gdb_byte *readbuf, | |
955 | const gdb_byte *writebuf, ULONGEST offset, | |
956 | ULONGEST len, ULONGEST *xfered_len) | |
9d46c4e5 PA |
957 | { |
958 | switch (object) | |
61bb466e | 959 | { |
9d46c4e5 PA |
960 | case TARGET_OBJECT_MEMORY: |
961 | return procfs_xfer_memory (readbuf, writebuf, offset, len, xfered_len); | |
8a6c0ccd AR |
962 | case TARGET_OBJECT_AUXV: |
963 | if (readbuf != NULL) | |
964 | { | |
965 | int err; | |
966 | CORE_ADDR initial_stack; | |
967 | debug_process_t procinfo; | |
968 | /* For 32-bit architecture, size of auxv_t is 8 bytes. */ | |
969 | const unsigned int sizeof_auxv_t = sizeof (auxv_t); | |
970 | const unsigned int sizeof_tempbuf = 20 * sizeof_auxv_t; | |
971 | int tempread; | |
972 | gdb_byte *const tempbuf = alloca (sizeof_tempbuf); | |
973 | ||
974 | if (tempbuf == NULL) | |
975 | return TARGET_XFER_E_IO; | |
976 | ||
977 | err = devctl (ctl_fd, DCMD_PROC_INFO, &procinfo, | |
978 | sizeof procinfo, 0); | |
979 | if (err != EOK) | |
980 | return TARGET_XFER_E_IO; | |
981 | ||
982 | initial_stack = procinfo.initial_stack; | |
983 | ||
984 | /* procfs is always 'self-hosted', no byte-order manipulation. */ | |
985 | tempread = nto_read_auxv_from_initial_stack (initial_stack, tempbuf, | |
986 | sizeof_tempbuf, | |
987 | sizeof (auxv_t)); | |
325fac50 | 988 | tempread = std::min (tempread, len) - offset; |
8a6c0ccd AR |
989 | memcpy (readbuf, tempbuf + offset, tempread); |
990 | *xfered_len = tempread; | |
991 | return tempread ? TARGET_XFER_OK : TARGET_XFER_EOF; | |
992 | } | |
993 | /* Fallthru */ | |
9d46c4e5 | 994 | default: |
4360561f TT |
995 | return this->beneath ()->xfer_partial (object, annex, |
996 | readbuf, writebuf, offset, len, | |
997 | xfered_len); | |
61bb466e | 998 | } |
61bb466e KW |
999 | } |
1000 | ||
1001 | /* Take a program previously attached to and detaches it. | |
1002 | The program resumes execution and will no longer stop | |
1003 | on signals, etc. We'd better not have left any breakpoints | |
1004 | in the program or it'll die when it hits one. */ | |
f6ac5f3d PA |
1005 | void |
1006 | nto_procfs_target::detach (inferior *inf, int from_tty) | |
61bb466e | 1007 | { |
7f9f62ba | 1008 | int pid; |
61bb466e | 1009 | |
0f48b757 PA |
1010 | target_announce_detach (); |
1011 | ||
61bb466e | 1012 | if (siggnal) |
e99b03dc | 1013 | SignalKill (nto_node (), inferior_ptid.pid (), 0, 0, 0, 0); |
61bb466e KW |
1014 | |
1015 | close (ctl_fd); | |
1016 | ctl_fd = -1; | |
7f9f62ba | 1017 | |
e99b03dc | 1018 | pid = inferior_ptid.pid (); |
61bb466e | 1019 | inferior_ptid = null_ptid; |
7f9f62ba PA |
1020 | detach_inferior (pid); |
1021 | init_thread_list (); | |
6a3cb8e8 | 1022 | inf_child_maybe_unpush_target (ops); |
61bb466e KW |
1023 | } |
1024 | ||
1025 | static int | |
1026 | procfs_breakpoint (CORE_ADDR addr, int type, int size) | |
1027 | { | |
1028 | procfs_break brk; | |
1029 | ||
1030 | brk.type = type; | |
1031 | brk.addr = addr; | |
1032 | brk.size = size; | |
1033 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1034 | if (errno != EOK) | |
1035 | return 1; | |
1036 | return 0; | |
1037 | } | |
1038 | ||
f6ac5f3d PA |
1039 | int |
1040 | nto_procfs_target::insert_breakpoint (struct gdbarch *gdbarch, | |
1041 | struct bp_target_info *bp_tgt) | |
61bb466e | 1042 | { |
0d5ed153 | 1043 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f | 1044 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, 0); |
61bb466e KW |
1045 | } |
1046 | ||
f6ac5f3d PA |
1047 | int |
1048 | nto_procfs_target::remove_breakpoint (struct gdbarch *gdbarch, | |
1049 | struct bp_target_info *bp_tgt, | |
1050 | enum remove_bp_reason reason) | |
61bb466e | 1051 | { |
8181d85f | 1052 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, -1); |
61bb466e KW |
1053 | } |
1054 | ||
f6ac5f3d PA |
1055 | int |
1056 | nto_procfs_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
1057 | struct bp_target_info *bp_tgt) | |
61bb466e | 1058 | { |
0d5ed153 | 1059 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f DJ |
1060 | return procfs_breakpoint (bp_tgt->placed_address, |
1061 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0); | |
61bb466e KW |
1062 | } |
1063 | ||
f6ac5f3d PA |
1064 | int |
1065 | nto_procfs_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
1066 | struct bp_target_info *bp_tgt) | |
61bb466e | 1067 | { |
8181d85f DJ |
1068 | return procfs_breakpoint (bp_tgt->placed_address, |
1069 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1); | |
61bb466e KW |
1070 | } |
1071 | ||
f6ac5f3d PA |
1072 | void |
1073 | nto_procfs_target::resume (ptid_t ptid, int step, enum gdb_signal signo) | |
61bb466e KW |
1074 | { |
1075 | int signal_to_pass; | |
1076 | procfs_status status; | |
14ef7606 | 1077 | sigset_t *run_fault = (sigset_t *) (void *) &run.fault; |
61bb466e | 1078 | |
d7e15655 | 1079 | if (inferior_ptid == null_ptid) |
61bb466e KW |
1080 | return; |
1081 | ||
d7e15655 | 1082 | procfs_set_thread (ptid == minus_one_ptid ? inferior_ptid : |
61bb466e KW |
1083 | ptid); |
1084 | ||
1085 | run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE; | |
1086 | if (step) | |
1087 | run.flags |= _DEBUG_RUN_STEP; | |
1088 | ||
14ef7606 AR |
1089 | sigemptyset (run_fault); |
1090 | sigaddset (run_fault, FLTBPT); | |
1091 | sigaddset (run_fault, FLTTRACE); | |
1092 | sigaddset (run_fault, FLTILL); | |
1093 | sigaddset (run_fault, FLTPRIV); | |
1094 | sigaddset (run_fault, FLTBOUNDS); | |
1095 | sigaddset (run_fault, FLTIOVF); | |
1096 | sigaddset (run_fault, FLTIZDIV); | |
1097 | sigaddset (run_fault, FLTFPE); | |
61bb466e | 1098 | /* Peter V will be changing this at some point. */ |
14ef7606 | 1099 | sigaddset (run_fault, FLTPAGE); |
61bb466e KW |
1100 | |
1101 | run.flags |= _DEBUG_RUN_ARM; | |
1102 | ||
2ea28649 | 1103 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
1104 | |
1105 | if (signal_to_pass) | |
1106 | { | |
1107 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
2ea28649 | 1108 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
1109 | if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED)) |
1110 | { | |
1111 | if (signal_to_pass != status.info.si_signo) | |
1112 | { | |
e99b03dc | 1113 | SignalKill (nto_node (), inferior_ptid.pid (), 0, |
d737fd7f | 1114 | signal_to_pass, 0, 0); |
61bb466e KW |
1115 | run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG; |
1116 | } | |
0df8b418 | 1117 | else /* Let it kill the program without telling us. */ |
61bb466e KW |
1118 | sigdelset (&run.trace, signal_to_pass); |
1119 | } | |
1120 | } | |
1121 | else | |
1122 | run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT; | |
1123 | ||
1124 | errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0); | |
1125 | if (errno != EOK) | |
1126 | { | |
9b20d036 | 1127 | perror (_("run error!\n")); |
61bb466e KW |
1128 | return; |
1129 | } | |
1130 | } | |
1131 | ||
f6ac5f3d PA |
1132 | void |
1133 | nto_procfs_target::mourn_inferior () | |
61bb466e | 1134 | { |
d7e15655 | 1135 | if (inferior_ptid != null_ptid) |
61bb466e | 1136 | { |
e99b03dc | 1137 | SignalKill (nto_node (), inferior_ptid.pid (), 0, SIGKILL, 0, 0); |
61bb466e KW |
1138 | close (ctl_fd); |
1139 | } | |
1140 | inferior_ptid = null_ptid; | |
1141 | init_thread_list (); | |
c1ee2fb3 | 1142 | inf_child_mourn_inferior (ops); |
61bb466e KW |
1143 | } |
1144 | ||
1145 | /* This function breaks up an argument string into an argument | |
1146 | vector suitable for passing to execvp(). | |
1147 | E.g., on "run a b c d" this routine would get as input | |
1148 | the string "a b c d", and as output it would fill in argv with | |
1149 | the four arguments "a", "b", "c", "d". The only additional | |
1150 | functionality is simple quoting. The gdb command: | |
1151 | run a "b c d" f | |
1152 | will fill in argv with the three args "a", "b c d", "e". */ | |
1153 | static void | |
1154 | breakup_args (char *scratch, char **argv) | |
1155 | { | |
1156 | char *pp, *cp = scratch; | |
1157 | char quoting = 0; | |
1158 | ||
1159 | for (;;) | |
1160 | { | |
1161 | /* Scan past leading separators. */ | |
1162 | quoting = 0; | |
1163 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') | |
1164 | cp++; | |
1165 | ||
1166 | /* Break if at end of string. */ | |
1167 | if (*cp == '\0') | |
1168 | break; | |
1169 | ||
1170 | /* Take an arg. */ | |
1171 | if (*cp == '"') | |
1172 | { | |
1173 | cp++; | |
1174 | quoting = strchr (cp, '"') ? 1 : 0; | |
1175 | } | |
1176 | ||
1177 | *argv++ = cp; | |
1178 | ||
1179 | /* Scan for next arg separator. */ | |
1180 | pp = cp; | |
1181 | if (quoting) | |
1182 | cp = strchr (pp, '"'); | |
1183 | if ((cp == NULL) || (!quoting)) | |
1184 | cp = strchr (pp, ' '); | |
1185 | if (cp == NULL) | |
1186 | cp = strchr (pp, '\t'); | |
1187 | if (cp == NULL) | |
1188 | cp = strchr (pp, '\n'); | |
1189 | ||
1190 | /* No separators => end of string => break. */ | |
1191 | if (cp == NULL) | |
1192 | { | |
1193 | pp = cp; | |
1194 | break; | |
1195 | } | |
1196 | ||
1197 | /* Replace the separator with a terminator. */ | |
1198 | *cp++ = '\0'; | |
1199 | } | |
1200 | ||
1201 | /* Execv requires a null-terminated arg vector. */ | |
1202 | *argv = NULL; | |
1203 | } | |
1204 | ||
f6ac5f3d PA |
1205 | void |
1206 | nto_procfs_target::create_inferior (const char *exec_file, | |
1207 | const std::string &allargs, | |
1208 | char **env, int from_tty) | |
61bb466e KW |
1209 | { |
1210 | struct inheritance inherit; | |
1211 | pid_t pid; | |
1212 | int flags, errn; | |
1213 | char **argv, *args; | |
3cb3b8df | 1214 | const char *in = "", *out = "", *err = ""; |
61bb466e KW |
1215 | int fd, fds[3]; |
1216 | sigset_t set; | |
3cb3b8df | 1217 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
3fdfcbf1 | 1218 | struct inferior *inf; |
61bb466e | 1219 | |
7c5ded6a | 1220 | argv = xmalloc ((allargs.size () / (unsigned) 2 + 2) * |
61bb466e KW |
1221 | sizeof (*argv)); |
1222 | argv[0] = get_exec_file (1); | |
1223 | if (!argv[0]) | |
1224 | { | |
1225 | if (exec_file) | |
1226 | argv[0] = exec_file; | |
1227 | else | |
1228 | return; | |
1229 | } | |
1230 | ||
7c5ded6a | 1231 | args = xstrdup (allargs.c_str ()); |
609c3040 | 1232 | breakup_args (args, (exec_file != NULL) ? &argv[1] : &argv[0]); |
61bb466e KW |
1233 | |
1234 | argv = nto_parse_redirection (argv, &in, &out, &err); | |
1235 | ||
1236 | fds[0] = STDIN_FILENO; | |
1237 | fds[1] = STDOUT_FILENO; | |
1238 | fds[2] = STDERR_FILENO; | |
1239 | ||
1240 | /* If the user specified I/O via gdb's --tty= arg, use it, but only | |
1241 | if the i/o is not also being specified via redirection. */ | |
1242 | if (inferior_io_terminal) | |
1243 | { | |
1244 | if (!in[0]) | |
1245 | in = inferior_io_terminal; | |
1246 | if (!out[0]) | |
1247 | out = inferior_io_terminal; | |
1248 | if (!err[0]) | |
1249 | err = inferior_io_terminal; | |
1250 | } | |
1251 | ||
1252 | if (in[0]) | |
1253 | { | |
1254 | fd = open (in, O_RDONLY); | |
1255 | if (fd == -1) | |
1256 | perror (in); | |
1257 | else | |
1258 | fds[0] = fd; | |
1259 | } | |
1260 | if (out[0]) | |
1261 | { | |
1262 | fd = open (out, O_WRONLY); | |
1263 | if (fd == -1) | |
1264 | perror (out); | |
1265 | else | |
1266 | fds[1] = fd; | |
1267 | } | |
1268 | if (err[0]) | |
1269 | { | |
1270 | fd = open (err, O_WRONLY); | |
1271 | if (fd == -1) | |
1272 | perror (err); | |
1273 | else | |
1274 | fds[2] = fd; | |
1275 | } | |
1276 | ||
1277 | /* Clear any pending SIGUSR1's but keep the behavior the same. */ | |
1278 | signal (SIGUSR1, signal (SIGUSR1, SIG_IGN)); | |
1279 | ||
1280 | sigemptyset (&set); | |
1281 | sigaddset (&set, SIGUSR1); | |
1282 | sigprocmask (SIG_UNBLOCK, &set, NULL); | |
1283 | ||
1284 | memset (&inherit, 0, sizeof (inherit)); | |
1285 | ||
1286 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0) | |
1287 | { | |
d737fd7f | 1288 | inherit.nd = nto_node (); |
61bb466e KW |
1289 | inherit.flags |= SPAWN_SETND; |
1290 | inherit.flags &= ~SPAWN_EXEC; | |
1291 | } | |
1292 | inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD; | |
1293 | inherit.pgroup = SPAWN_NEWPGROUP; | |
1294 | pid = spawnp (argv[0], 3, fds, &inherit, argv, | |
1295 | ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0); | |
1296 | xfree (args); | |
1297 | ||
1298 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1299 | ||
1300 | if (pid == -1) | |
8a3fe4f8 | 1301 | error (_("Error spawning %s: %d (%s)"), argv[0], errno, |
d737fd7f | 1302 | safe_strerror (errno)); |
61bb466e KW |
1303 | |
1304 | if (fds[0] != STDIN_FILENO) | |
1305 | close (fds[0]); | |
1306 | if (fds[1] != STDOUT_FILENO) | |
1307 | close (fds[1]); | |
1308 | if (fds[2] != STDERR_FILENO) | |
1309 | close (fds[2]); | |
1310 | ||
f2907e49 | 1311 | inferior_ptid = do_attach (ptid_t (pid)); |
e8032dde | 1312 | procfs_update_thread_list (ops); |
61bb466e | 1313 | |
6c95b8df PA |
1314 | inf = current_inferior (); |
1315 | inferior_appeared (inf, pid); | |
3fdfcbf1 | 1316 | inf->attach_flag = 0; |
7f9f62ba | 1317 | |
61bb466e KW |
1318 | flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */ |
1319 | errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0); | |
1320 | if (errn != EOK) | |
1321 | { | |
1322 | /* FIXME: expected warning? */ | |
1323 | /* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n", | |
1324 | errn, strerror(errn) ); */ | |
1325 | } | |
6a3cb8e8 PA |
1326 | if (!target_is_pushed (ops)) |
1327 | push_target (ops); | |
223ffa71 | 1328 | target_terminal::init (); |
61bb466e | 1329 | |
61bb466e KW |
1330 | if (exec_bfd != NULL |
1331 | || (symfile_objfile != NULL && symfile_objfile->obfd != NULL)) | |
268a4a75 | 1332 | solib_create_inferior_hook (0); |
61bb466e KW |
1333 | } |
1334 | ||
f6ac5f3d PA |
1335 | void |
1336 | nto_procfs_target::interrupt () | |
61bb466e KW |
1337 | { |
1338 | devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0); | |
1339 | } | |
1340 | ||
f6ac5f3d PA |
1341 | void |
1342 | nto_procfs_target::kill () | |
61bb466e | 1343 | { |
bc1e6c81 | 1344 | target_mourn_inferior (inferior_ptid); |
61bb466e KW |
1345 | } |
1346 | ||
61bb466e KW |
1347 | /* Fill buf with regset and return devctl cmd to do the setting. Return |
1348 | -1 if we fail to get the regset. Store size of regset in regsize. */ | |
1349 | static int | |
1350 | get_regset (int regset, char *buf, int bufsize, int *regsize) | |
1351 | { | |
1352 | int dev_get, dev_set; | |
1353 | switch (regset) | |
1354 | { | |
1355 | case NTO_REG_GENERAL: | |
1356 | dev_get = DCMD_PROC_GETGREG; | |
1357 | dev_set = DCMD_PROC_SETGREG; | |
1358 | break; | |
1359 | ||
1360 | case NTO_REG_FLOAT: | |
1361 | dev_get = DCMD_PROC_GETFPREG; | |
1362 | dev_set = DCMD_PROC_SETFPREG; | |
1363 | break; | |
1364 | ||
1365 | case NTO_REG_ALT: | |
1366 | dev_get = DCMD_PROC_GETALTREG; | |
1367 | dev_set = DCMD_PROC_SETALTREG; | |
1368 | break; | |
1369 | ||
1370 | case NTO_REG_SYSTEM: | |
1371 | default: | |
1372 | return -1; | |
1373 | } | |
97c44116 | 1374 | if (devctl (ctl_fd, dev_get, buf, bufsize, regsize) != EOK) |
61bb466e KW |
1375 | return -1; |
1376 | ||
1377 | return dev_set; | |
1378 | } | |
1379 | ||
f6ac5f3d PA |
1380 | void |
1381 | nto_procfs_target::store_registers (struct regcache *regcache, int regno) | |
61bb466e KW |
1382 | { |
1383 | union | |
1384 | { | |
1385 | procfs_greg greg; | |
1386 | procfs_fpreg fpreg; | |
1387 | procfs_altreg altreg; | |
1388 | } | |
1389 | reg; | |
1390 | unsigned off; | |
1391 | int len, regset, regsize, dev_set, err; | |
1392 | char *data; | |
222312d3 | 1393 | ptid_t ptid = regcache->ptid (); |
61bb466e | 1394 | |
d7e15655 | 1395 | if (ptid == null_ptid) |
61bb466e | 1396 | return; |
bcc0c096 | 1397 | procfs_set_thread (ptid); |
61bb466e KW |
1398 | |
1399 | if (regno == -1) | |
1400 | { | |
1401 | for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++) | |
1402 | { | |
1403 | dev_set = get_regset (regset, (char *) ®, | |
1404 | sizeof (reg), ®size); | |
1405 | if (dev_set == -1) | |
1406 | continue; | |
1407 | ||
56be3814 | 1408 | if (nto_regset_fill (regcache, regset, (char *) ®) == -1) |
61bb466e KW |
1409 | continue; |
1410 | ||
1411 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1412 | if (err != EOK) | |
1413 | fprintf_unfiltered (gdb_stderr, | |
1414 | "Warning unable to write regset %d: %s\n", | |
dc5dd1eb | 1415 | regno, safe_strerror (err)); |
61bb466e KW |
1416 | } |
1417 | } | |
1418 | else | |
1419 | { | |
1420 | regset = nto_regset_id (regno); | |
1421 | if (regset == -1) | |
1422 | return; | |
1423 | ||
1424 | dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size); | |
1425 | if (dev_set == -1) | |
1426 | return; | |
1427 | ||
ac7936df | 1428 | len = nto_register_area (regcache->arch (), |
60441ab9 | 1429 | regno, regset, &off); |
61bb466e KW |
1430 | |
1431 | if (len < 1) | |
1432 | return; | |
1433 | ||
34a79281 | 1434 | regcache->raw_collect (regno, (char *) ® + off); |
61bb466e KW |
1435 | |
1436 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1437 | if (err != EOK) | |
1438 | fprintf_unfiltered (gdb_stderr, | |
1439 | "Warning unable to write regset %d: %s\n", regno, | |
dc5dd1eb | 1440 | safe_strerror (err)); |
61bb466e KW |
1441 | } |
1442 | } | |
1443 | ||
2455069d UW |
1444 | /* Set list of signals to be handled in the target. */ |
1445 | ||
f6ac5f3d PA |
1446 | void |
1447 | nto_procfs_target::pass_signals (int numsigs, unsigned char *pass_signals) | |
61bb466e KW |
1448 | { |
1449 | int signo; | |
1450 | ||
2455069d UW |
1451 | sigfillset (&run.trace); |
1452 | ||
61bb466e KW |
1453 | for (signo = 1; signo < NSIG; signo++) |
1454 | { | |
2ea28649 | 1455 | int target_signo = gdb_signal_from_host (signo); |
2455069d UW |
1456 | if (target_signo < numsigs && pass_signals[target_signo]) |
1457 | sigdelset (&run.trace, signo); | |
61bb466e KW |
1458 | } |
1459 | } | |
1460 | ||
f6ac5f3d PA |
1461 | char * |
1462 | nto_procfs_target::pid_to_str (ptid_t ptid) | |
61bb466e KW |
1463 | { |
1464 | static char buf[1024]; | |
1465 | int pid, tid, n; | |
1466 | struct tidinfo *tip; | |
1467 | ||
e99b03dc | 1468 | pid = ptid.pid (); |
cc6bcb54 | 1469 | tid = ptid.tid (); |
61bb466e | 1470 | |
dc5dd1eb | 1471 | n = snprintf (buf, 1023, "process %d", pid); |
61bb466e KW |
1472 | |
1473 | #if 0 /* NYI */ | |
1474 | tip = procfs_thread_info (pid, tid); | |
1475 | if (tip != NULL) | |
dc5dd1eb | 1476 | snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state); |
61bb466e KW |
1477 | #endif |
1478 | ||
1479 | return buf; | |
1480 | } | |
1481 | ||
132f8e03 PA |
1482 | /* to_can_run implementation for "target procfs". Note this really |
1483 | means "can this target be the default run target", which there can | |
1484 | be only one, and we make it be "target native" like other ports. | |
1485 | "target procfs <node>" wouldn't make sense as default run target, as | |
1486 | it needs <node>. */ | |
ee8e9165 | 1487 | |
f6ac5f3d PA |
1488 | int |
1489 | nto_procfs_target::can_run () | |
132f8e03 PA |
1490 | { |
1491 | return 0; | |
1492 | } | |
1493 | ||
1494 | /* "target procfs". */ | |
f6ac5f3d | 1495 | static nto_procfs_target_procfs nto_procfs_ops; |
132f8e03 | 1496 | |
6a3cb8e8 | 1497 | /* "target native". */ |
f6ac5f3d | 1498 | static nto_procfs_target_native nto_native_ops; |
6a3cb8e8 | 1499 | |
132f8e03 PA |
1500 | /* Create the "native" and "procfs" targets. */ |
1501 | ||
1502 | static void | |
1503 | init_procfs_targets (void) | |
61bb466e | 1504 | { |
132f8e03 | 1505 | /* Register "target native". This is the default run target. */ |
d9f719f1 PA |
1506 | add_target (nto_native_target_info, inf_child_open_target); |
1507 | set_native_target (&nto_native_ops); | |
132f8e03 PA |
1508 | |
1509 | /* Register "target procfs <node>". */ | |
d9f719f1 | 1510 | add_target (nto_procfs_target_info, inf_child_open_target); |
61bb466e KW |
1511 | } |
1512 | ||
1513 | #define OSTYPE_NTO 1 | |
1514 | ||
1515 | void | |
dc5dd1eb | 1516 | _initialize_procfs (void) |
61bb466e KW |
1517 | { |
1518 | sigset_t set; | |
1519 | ||
132f8e03 | 1520 | init_procfs_targets (); |
61bb466e KW |
1521 | |
1522 | /* We use SIGUSR1 to gain control after we block waiting for a process. | |
1523 | We use sigwaitevent to wait. */ | |
1524 | sigemptyset (&set); | |
1525 | sigaddset (&set, SIGUSR1); | |
1526 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1527 | ||
2455069d UW |
1528 | /* Initially, make sure all signals are reported. */ |
1529 | sigfillset (&run.trace); | |
61bb466e KW |
1530 | |
1531 | /* Stuff some information. */ | |
1532 | nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags; | |
1533 | nto_cpuinfo_valid = 1; | |
1534 | ||
1bedd215 AC |
1535 | add_info ("pidlist", procfs_pidlist, _("pidlist")); |
1536 | add_info ("meminfo", procfs_meminfo, _("memory information")); | |
d737fd7f KW |
1537 | |
1538 | nto_is_nto_target = procfs_is_nto_target; | |
61bb466e KW |
1539 | } |
1540 | ||
1541 | ||
1542 | static int | |
f486487f | 1543 | procfs_hw_watchpoint (int addr, int len, enum target_hw_bp_type type) |
61bb466e KW |
1544 | { |
1545 | procfs_break brk; | |
1546 | ||
1547 | switch (type) | |
1548 | { | |
f486487f | 1549 | case hw_read: |
61bb466e KW |
1550 | brk.type = _DEBUG_BREAK_RD; |
1551 | break; | |
f486487f | 1552 | case hw_access: |
61bb466e KW |
1553 | brk.type = _DEBUG_BREAK_RW; |
1554 | break; | |
1555 | default: /* Modify. */ | |
1556 | /* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */ | |
1557 | brk.type = _DEBUG_BREAK_RW; | |
1558 | } | |
1559 | brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */ | |
1560 | brk.addr = addr; | |
1561 | brk.size = len; | |
1562 | ||
1563 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1564 | if (errno != EOK) | |
1565 | { | |
9b20d036 | 1566 | perror (_("Failed to set hardware watchpoint")); |
61bb466e KW |
1567 | return -1; |
1568 | } | |
1569 | return 0; | |
1570 | } | |
1571 | ||
57810aa7 | 1572 | bool |
f6ac5f3d PA |
1573 | nto_procfs_target::can_use_hw_breakpoint (enum bptype type, |
1574 | int cnt, int othertype) | |
61bb466e KW |
1575 | { |
1576 | return 1; | |
1577 | } | |
1578 | ||
f6ac5f3d PA |
1579 | int |
1580 | nto_procfs_target::remove_hw_watchpoint (CORE_ADDR addr, int len, | |
1581 | enum target_hw_bp_type type, | |
1582 | struct expression *cond) | |
61bb466e KW |
1583 | { |
1584 | return procfs_hw_watchpoint (addr, -1, type); | |
1585 | } | |
1586 | ||
f6ac5f3d PA |
1587 | int |
1588 | nto_procfs_target::insert_hw_watchpoint (CORE_ADDR addr, int len, | |
1589 | enum target_hw_bp_type type, | |
1590 | struct expression *cond) | |
61bb466e KW |
1591 | { |
1592 | return procfs_hw_watchpoint (addr, len, type); | |
1593 | } | |
1594 | ||
57810aa7 | 1595 | bool |
f6ac5f3d | 1596 | nto_procfs_target::stopped_by_watchpoint () |
61bb466e | 1597 | { |
a9889169 AR |
1598 | /* NOTE: nto_stopped_by_watchpoint will be called ONLY while we are |
1599 | stopped due to a SIGTRAP. This assumes gdb works in 'all-stop' mode; | |
1600 | future gdb versions will likely run in 'non-stop' mode in which case | |
1601 | we will have to store/examine statuses per thread in question. | |
1602 | Until then, this will work fine. */ | |
1603 | ||
1604 | struct inferior *inf = current_inferior (); | |
1605 | struct nto_inferior_data *inf_data; | |
1606 | ||
1607 | gdb_assert (inf != NULL); | |
1608 | ||
1609 | inf_data = nto_inferior_data (inf); | |
1610 | ||
1611 | return inf_data->stopped_flags | |
1612 | & (_DEBUG_FLAG_TRACE_RD | |
1613 | | _DEBUG_FLAG_TRACE_WR | |
1614 | | _DEBUG_FLAG_TRACE_MODIFY); | |
61bb466e | 1615 | } |