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 | |
42a4f53d | 4 | Copyright (C) 2003-2019 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" |
268a13a5 TT |
45 | #include "gdbsupport/filestuff.h" |
46 | #include "gdbsupport/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 | |
adc6a863 | 112 | void pass_signals (gdb::array_view<const 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 | |
a068643d | 118 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
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 | 216 | |
61bb466e KW |
217 | if (nodestr) |
218 | { | |
219 | nto_procfs_node = netmgr_strtond (nodestr, &endstr); | |
220 | if (nto_procfs_node == -1) | |
221 | { | |
222 | if (errno == ENOTSUP) | |
223 | printf_filtered ("QNX Net Manager not found.\n"); | |
224 | printf_filtered ("Invalid QNX node %s: error %d (%s).\n", nodestr, | |
dc5dd1eb | 225 | errno, safe_strerror (errno)); |
61bb466e KW |
226 | xfree (nodestr); |
227 | nodestr = NULL; | |
228 | nto_procfs_node = ND_LOCAL_NODE; | |
229 | } | |
230 | else if (*endstr) | |
231 | { | |
232 | if (*(endstr - 1) == '/') | |
233 | *(endstr - 1) = 0; | |
234 | else | |
235 | *endstr = 0; | |
236 | } | |
237 | } | |
609c3040 AR |
238 | snprintf (nto_procfs_path, PATH_MAX - 1, "%s%s", |
239 | (nodestr != NULL) ? nodestr : "", "/proc"); | |
61bb466e | 240 | |
5dc1a704 TT |
241 | scoped_fd fd (open (nto_procfs_path, O_RDONLY)); |
242 | if (fd.get () == -1) | |
61bb466e KW |
243 | { |
244 | printf_filtered ("Error opening %s : %d (%s)\n", nto_procfs_path, errno, | |
dc5dd1eb | 245 | safe_strerror (errno)); |
8a3fe4f8 | 246 | error (_("Invalid procfs arg")); |
61bb466e KW |
247 | } |
248 | ||
249 | sysinfo = (void *) buffer; | |
5dc1a704 | 250 | if (devctl (fd.get (), DCMD_PROC_SYSINFO, sysinfo, sizeof buffer, 0) != EOK) |
61bb466e KW |
251 | { |
252 | printf_filtered ("Error getting size: %d (%s)\n", errno, | |
dc5dd1eb | 253 | safe_strerror (errno)); |
8a3fe4f8 | 254 | error (_("Devctl failed.")); |
61bb466e KW |
255 | } |
256 | else | |
257 | { | |
258 | total_size = sysinfo->total_size; | |
259 | sysinfo = alloca (total_size); | |
609c3040 | 260 | if (sysinfo == NULL) |
61bb466e KW |
261 | { |
262 | printf_filtered ("Memory error: %d (%s)\n", errno, | |
dc5dd1eb | 263 | safe_strerror (errno)); |
8a3fe4f8 | 264 | error (_("alloca failed.")); |
61bb466e KW |
265 | } |
266 | else | |
267 | { | |
5dc1a704 TT |
268 | if (devctl (fd.get (), DCMD_PROC_SYSINFO, sysinfo, total_size, 0) |
269 | != EOK) | |
61bb466e KW |
270 | { |
271 | printf_filtered ("Error getting sysinfo: %d (%s)\n", errno, | |
dc5dd1eb | 272 | safe_strerror (errno)); |
8a3fe4f8 | 273 | error (_("Devctl failed.")); |
61bb466e KW |
274 | } |
275 | else | |
276 | { | |
277 | if (sysinfo->type != | |
1143fffb | 278 | nto_map_arch_to_cputype (gdbarch_bfd_arch_info |
f5656ead | 279 | (target_gdbarch ())->arch_name)) |
9fe4a216 | 280 | error (_("Invalid target CPU.")); |
61bb466e KW |
281 | } |
282 | } | |
283 | } | |
6a3cb8e8 | 284 | |
f6ac5f3d | 285 | inf_child_target::open (arg, from_tty); |
61bb466e KW |
286 | printf_filtered ("Debugging using %s\n", nto_procfs_path); |
287 | } | |
288 | ||
289 | static void | |
290 | procfs_set_thread (ptid_t ptid) | |
291 | { | |
292 | pid_t tid; | |
293 | ||
cc6bcb54 | 294 | tid = ptid.tid (); |
61bb466e KW |
295 | devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0); |
296 | } | |
297 | ||
57810aa7 PA |
298 | /* Return true if the thread TH is still alive. */ |
299 | ||
300 | bool | |
f6ac5f3d | 301 | nto_procfs_target::thread_alive (ptid_t ptid) |
61bb466e KW |
302 | { |
303 | pid_t tid; | |
745a434e AR |
304 | pid_t pid; |
305 | procfs_status status; | |
306 | int err; | |
61bb466e | 307 | |
cc6bcb54 | 308 | tid = ptid.tid (); |
e99b03dc | 309 | pid = ptid.pid (); |
745a434e AR |
310 | |
311 | if (kill (pid, 0) == -1) | |
57810aa7 | 312 | return false; |
745a434e AR |
313 | |
314 | status.tid = tid; | |
315 | if ((err = devctl (ctl_fd, DCMD_PROC_TIDSTATUS, | |
316 | &status, sizeof (status), 0)) != EOK) | |
57810aa7 | 317 | return false; |
745a434e AR |
318 | |
319 | /* Thread is alive or dead but not yet joined, | |
320 | or dead and there is an alive (or dead unjoined) thread with | |
321 | higher tid. | |
322 | ||
323 | If the tid is not the same as requested, requested tid is dead. */ | |
324 | return (status.tid == tid) && (status.state != STATE_DEAD); | |
325 | } | |
326 | ||
327 | static void | |
328 | update_thread_private_data_name (struct thread_info *new_thread, | |
329 | const char *newname) | |
330 | { | |
7aabaf9d | 331 | nto_thread_info *pti = get_nto_thread_info (new_thread); |
745a434e AR |
332 | |
333 | gdb_assert (newname != NULL); | |
334 | gdb_assert (new_thread != NULL); | |
7aabaf9d SM |
335 | |
336 | if (pti) | |
745a434e | 337 | { |
7aabaf9d SM |
338 | pti = new nto_thread_info; |
339 | new_thread->priv.reset (pti); | |
745a434e | 340 | } |
7aabaf9d SM |
341 | |
342 | pti->name = newname; | |
745a434e AR |
343 | } |
344 | ||
345 | static void | |
346 | update_thread_private_data (struct thread_info *new_thread, | |
347 | pthread_t tid, int state, int flags) | |
348 | { | |
745a434e AR |
349 | procfs_info pidinfo; |
350 | struct _thread_name *tn; | |
351 | procfs_threadctl tctl; | |
352 | ||
353 | #if _NTO_VERSION > 630 | |
354 | gdb_assert (new_thread != NULL); | |
355 | ||
356 | if (devctl (ctl_fd, DCMD_PROC_INFO, &pidinfo, | |
357 | sizeof(pidinfo), 0) != EOK) | |
358 | return; | |
359 | ||
360 | memset (&tctl, 0, sizeof (tctl)); | |
361 | tctl.cmd = _NTO_TCTL_NAME; | |
362 | tn = (struct _thread_name *) (&tctl.data); | |
363 | ||
364 | /* Fetch name for the given thread. */ | |
365 | tctl.tid = tid; | |
366 | tn->name_buf_len = sizeof (tctl.data) - sizeof (*tn); | |
367 | tn->new_name_len = -1; /* Getting, not setting. */ | |
368 | if (devctl (ctl_fd, DCMD_PROC_THREADCTL, &tctl, sizeof (tctl), NULL) != EOK) | |
369 | tn->name_buf[0] = '\0'; | |
370 | ||
371 | tn->name_buf[_NTO_THREAD_NAME_MAX] = '\0'; | |
372 | ||
373 | update_thread_private_data_name (new_thread, tn->name_buf); | |
374 | ||
7aabaf9d | 375 | nto_thread_info *pti = get_nto_thread_info (new_thread); |
745a434e AR |
376 | pti->tid = tid; |
377 | pti->state = state; | |
378 | pti->flags = flags; | |
379 | #endif /* _NTO_VERSION */ | |
61bb466e KW |
380 | } |
381 | ||
f6ac5f3d PA |
382 | void |
383 | nto_procfs_target::update_thread_list () | |
61bb466e KW |
384 | { |
385 | procfs_status status; | |
386 | pid_t pid; | |
387 | ptid_t ptid; | |
745a434e AR |
388 | pthread_t tid; |
389 | struct thread_info *new_thread; | |
61bb466e KW |
390 | |
391 | if (ctl_fd == -1) | |
392 | return; | |
393 | ||
e8032dde PA |
394 | prune_threads (); |
395 | ||
e99b03dc | 396 | pid = inferior_ptid.pid (); |
61bb466e | 397 | |
745a434e AR |
398 | status.tid = 1; |
399 | ||
400 | for (tid = 1;; ++tid) | |
61bb466e | 401 | { |
745a434e AR |
402 | if (status.tid == tid |
403 | && (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0) | |
404 | != EOK)) | |
61bb466e | 405 | break; |
745a434e AR |
406 | if (status.tid != tid) |
407 | /* The reason why this would not be equal is that devctl might have | |
408 | returned different tid, meaning the requested tid no longer exists | |
409 | (e.g. thread exited). */ | |
410 | continue; | |
fd79271b | 411 | ptid = ptid_t (pid, 0, tid); |
745a434e AR |
412 | new_thread = find_thread_ptid (ptid); |
413 | if (!new_thread) | |
414 | new_thread = add_thread (ptid); | |
415 | update_thread_private_data (new_thread, tid, status.state, 0); | |
416 | status.tid++; | |
61bb466e KW |
417 | } |
418 | return; | |
419 | } | |
420 | ||
774ee6d2 | 421 | static void |
1d12d88f | 422 | procfs_pidlist (const char *args, int from_tty) |
61bb466e | 423 | { |
61bb466e | 424 | struct dirent *dirp = NULL; |
609c3040 | 425 | char buf[PATH_MAX]; |
61bb466e KW |
426 | procfs_info *pidinfo = NULL; |
427 | procfs_debuginfo *info = NULL; | |
428 | procfs_status *status = NULL; | |
429 | pid_t num_threads = 0; | |
430 | pid_t pid; | |
431 | char name[512]; | |
609c3040 | 432 | char procfs_dir[PATH_MAX]; |
61bb466e | 433 | |
609c3040 AR |
434 | snprintf (procfs_dir, sizeof (procfs_dir), "%s%s", |
435 | (nodestr != NULL) ? nodestr : "", "/proc"); | |
436 | ||
f0b3976b | 437 | gdb_dir_up dp (opendir (procfs_dir)); |
61bb466e KW |
438 | if (dp == NULL) |
439 | { | |
dc5dd1eb | 440 | fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)", |
609c3040 | 441 | procfs_dir, errno, safe_strerror (errno)); |
61bb466e KW |
442 | return; |
443 | } | |
444 | ||
445 | /* Start scan at first pid. */ | |
f0b3976b | 446 | rewinddir (dp.get ()); |
61bb466e KW |
447 | |
448 | do | |
449 | { | |
450 | /* Get the right pid and procfs path for the pid. */ | |
451 | do | |
452 | { | |
f0b3976b | 453 | dirp = readdir (dp.get ()); |
61bb466e | 454 | if (dirp == NULL) |
f0b3976b | 455 | return; |
609c3040 AR |
456 | snprintf (buf, sizeof (buf), "%s%s/%s/as", |
457 | (nodestr != NULL) ? nodestr : "", | |
458 | "/proc", dirp->d_name); | |
61bb466e KW |
459 | pid = atoi (dirp->d_name); |
460 | } | |
461 | while (pid == 0); | |
462 | ||
0df8b418 | 463 | /* Open the procfs path. */ |
5dc1a704 TT |
464 | scoped_fd fd (open (buf, O_RDONLY)); |
465 | if (fd.get () == -1) | |
61bb466e | 466 | { |
dc5dd1eb | 467 | fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n", |
d737fd7f | 468 | buf, errno, safe_strerror (errno)); |
609c3040 | 469 | continue; |
61bb466e KW |
470 | } |
471 | ||
472 | pidinfo = (procfs_info *) buf; | |
5dc1a704 | 473 | if (devctl (fd.get (), DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK) |
61bb466e | 474 | { |
dc5dd1eb | 475 | fprintf_unfiltered (gdb_stderr, |
d737fd7f KW |
476 | "devctl DCMD_PROC_INFO failed - %d (%s)\n", |
477 | errno, safe_strerror (errno)); | |
61bb466e KW |
478 | break; |
479 | } | |
480 | num_threads = pidinfo->num_threads; | |
481 | ||
482 | info = (procfs_debuginfo *) buf; | |
5dc1a704 TT |
483 | if (devctl (fd.get (), DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0) |
484 | != EOK) | |
61bb466e KW |
485 | strcpy (name, "unavailable"); |
486 | else | |
487 | strcpy (name, info->path); | |
488 | ||
489 | /* Collect state info on all the threads. */ | |
490 | status = (procfs_status *) buf; | |
491 | for (status->tid = 1; status->tid <= num_threads; status->tid++) | |
492 | { | |
609c3040 | 493 | const int err |
5dc1a704 | 494 | = devctl (fd.get (), DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0); |
609c3040 AR |
495 | printf_filtered ("%s - %d", name, pid); |
496 | if (err == EOK && status->tid != 0) | |
497 | printf_filtered ("/%d\n", status->tid); | |
498 | else | |
499 | { | |
500 | printf_filtered ("\n"); | |
501 | break; | |
502 | } | |
61bb466e | 503 | } |
61bb466e KW |
504 | } |
505 | while (dirp != NULL); | |
61bb466e KW |
506 | } |
507 | ||
774ee6d2 | 508 | static void |
1d12d88f | 509 | procfs_meminfo (const char *args, int from_tty) |
61bb466e KW |
510 | { |
511 | procfs_mapinfo *mapinfos = NULL; | |
512 | static int num_mapinfos = 0; | |
513 | procfs_mapinfo *mapinfo_p, *mapinfo_p2; | |
514 | int flags = ~0, err, num, i, j; | |
515 | ||
516 | struct | |
517 | { | |
518 | procfs_debuginfo info; | |
519 | char buff[_POSIX_PATH_MAX]; | |
520 | } map; | |
521 | ||
522 | struct info | |
523 | { | |
524 | unsigned addr; | |
525 | unsigned size; | |
526 | unsigned flags; | |
527 | unsigned debug_vaddr; | |
528 | unsigned long long offset; | |
529 | }; | |
530 | ||
531 | struct printinfo | |
532 | { | |
533 | unsigned long long ino; | |
534 | unsigned dev; | |
535 | struct info text; | |
536 | struct info data; | |
537 | char name[256]; | |
538 | } printme; | |
539 | ||
540 | /* Get the number of map entrys. */ | |
541 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num); | |
542 | if (err != EOK) | |
543 | { | |
d737fd7f KW |
544 | printf ("failed devctl num mapinfos - %d (%s)\n", err, |
545 | safe_strerror (err)); | |
61bb466e KW |
546 | return; |
547 | } | |
548 | ||
774ee6d2 | 549 | mapinfos = XNEWVEC (procfs_mapinfo, num); |
61bb466e KW |
550 | |
551 | num_mapinfos = num; | |
552 | mapinfo_p = mapinfos; | |
553 | ||
554 | /* Fill the map entrys. */ | |
555 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, mapinfo_p, num | |
556 | * sizeof (procfs_mapinfo), &num); | |
557 | if (err != EOK) | |
558 | { | |
5483d879 | 559 | printf ("failed devctl mapinfos - %d (%s)\n", err, safe_strerror (err)); |
61bb466e KW |
560 | xfree (mapinfos); |
561 | return; | |
562 | } | |
563 | ||
325fac50 | 564 | num = std::min (num, num_mapinfos); |
61bb466e KW |
565 | |
566 | /* Run through the list of mapinfos, and store the data and text info | |
567 | so we can print it at the bottom of the loop. */ | |
568 | for (mapinfo_p = mapinfos, i = 0; i < num; i++, mapinfo_p++) | |
569 | { | |
570 | if (!(mapinfo_p->flags & flags)) | |
571 | mapinfo_p->ino = 0; | |
572 | ||
573 | if (mapinfo_p->ino == 0) /* Already visited. */ | |
574 | continue; | |
575 | ||
576 | map.info.vaddr = mapinfo_p->vaddr; | |
577 | ||
578 | err = devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
579 | if (err != EOK) | |
580 | continue; | |
581 | ||
582 | memset (&printme, 0, sizeof printme); | |
583 | printme.dev = mapinfo_p->dev; | |
584 | printme.ino = mapinfo_p->ino; | |
585 | printme.text.addr = mapinfo_p->vaddr; | |
586 | printme.text.size = mapinfo_p->size; | |
587 | printme.text.flags = mapinfo_p->flags; | |
588 | printme.text.offset = mapinfo_p->offset; | |
589 | printme.text.debug_vaddr = map.info.vaddr; | |
590 | strcpy (printme.name, map.info.path); | |
591 | ||
592 | /* Check for matching data. */ | |
593 | for (mapinfo_p2 = mapinfos, j = 0; j < num; j++, mapinfo_p2++) | |
594 | { | |
595 | if (mapinfo_p2->vaddr != mapinfo_p->vaddr | |
596 | && mapinfo_p2->ino == mapinfo_p->ino | |
597 | && mapinfo_p2->dev == mapinfo_p->dev) | |
598 | { | |
599 | map.info.vaddr = mapinfo_p2->vaddr; | |
600 | err = | |
601 | devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
602 | if (err != EOK) | |
603 | continue; | |
604 | ||
605 | if (strcmp (map.info.path, printme.name)) | |
606 | continue; | |
607 | ||
608 | /* Lower debug_vaddr is always text, if nessessary, swap. */ | |
609 | if ((int) map.info.vaddr < (int) printme.text.debug_vaddr) | |
610 | { | |
611 | memcpy (&(printme.data), &(printme.text), | |
612 | sizeof (printme.data)); | |
613 | printme.text.addr = mapinfo_p2->vaddr; | |
614 | printme.text.size = mapinfo_p2->size; | |
615 | printme.text.flags = mapinfo_p2->flags; | |
616 | printme.text.offset = mapinfo_p2->offset; | |
617 | printme.text.debug_vaddr = map.info.vaddr; | |
618 | } | |
619 | else | |
620 | { | |
621 | printme.data.addr = mapinfo_p2->vaddr; | |
622 | printme.data.size = mapinfo_p2->size; | |
623 | printme.data.flags = mapinfo_p2->flags; | |
624 | printme.data.offset = mapinfo_p2->offset; | |
625 | printme.data.debug_vaddr = map.info.vaddr; | |
626 | } | |
627 | mapinfo_p2->ino = 0; | |
628 | } | |
629 | } | |
630 | mapinfo_p->ino = 0; | |
631 | ||
632 | printf_filtered ("%s\n", printme.name); | |
633 | printf_filtered ("\ttext=%08x bytes @ 0x%08x\n", printme.text.size, | |
634 | printme.text.addr); | |
635 | printf_filtered ("\t\tflags=%08x\n", printme.text.flags); | |
636 | printf_filtered ("\t\tdebug=%08x\n", printme.text.debug_vaddr); | |
2244ba2e | 637 | printf_filtered ("\t\toffset=%s\n", phex (printme.text.offset, 8)); |
61bb466e KW |
638 | if (printme.data.size) |
639 | { | |
640 | printf_filtered ("\tdata=%08x bytes @ 0x%08x\n", printme.data.size, | |
641 | printme.data.addr); | |
642 | printf_filtered ("\t\tflags=%08x\n", printme.data.flags); | |
643 | printf_filtered ("\t\tdebug=%08x\n", printme.data.debug_vaddr); | |
2244ba2e | 644 | printf_filtered ("\t\toffset=%s\n", phex (printme.data.offset, 8)); |
61bb466e KW |
645 | } |
646 | printf_filtered ("\tdev=0x%x\n", printme.dev); | |
647 | printf_filtered ("\tino=0x%x\n", (unsigned int) printme.ino); | |
648 | } | |
649 | xfree (mapinfos); | |
650 | return; | |
651 | } | |
652 | ||
653 | /* Print status information about what we're accessing. */ | |
f6ac5f3d PA |
654 | void |
655 | nto_procfs_target::files_info () | |
61bb466e | 656 | { |
181e7f93 PA |
657 | struct inferior *inf = current_inferior (); |
658 | ||
61bb466e | 659 | printf_unfiltered ("\tUsing the running image of %s %s via %s.\n", |
3fdfcbf1 | 660 | inf->attach_flag ? "attached" : "child", |
a068643d | 661 | target_pid_to_str (inferior_ptid).c_str (), |
609c3040 | 662 | (nodestr != NULL) ? nodestr : "local node"); |
61bb466e KW |
663 | } |
664 | ||
e5343fde AR |
665 | /* Target to_pid_to_exec_file implementation. */ |
666 | ||
f6ac5f3d PA |
667 | char * |
668 | nto_procfs_target::pid_to_exec_file (const int pid) | |
e5343fde AR |
669 | { |
670 | int proc_fd; | |
671 | static char proc_path[PATH_MAX]; | |
672 | ssize_t rd; | |
673 | ||
674 | /* Read exe file name. */ | |
675 | snprintf (proc_path, sizeof (proc_path), "%s/proc/%d/exefile", | |
676 | (nodestr != NULL) ? nodestr : "", pid); | |
677 | proc_fd = open (proc_path, O_RDONLY); | |
678 | if (proc_fd == -1) | |
679 | return NULL; | |
680 | ||
681 | rd = read (proc_fd, proc_path, sizeof (proc_path) - 1); | |
682 | close (proc_fd); | |
683 | if (rd <= 0) | |
684 | { | |
685 | proc_path[0] = '\0'; | |
686 | return NULL; | |
687 | } | |
688 | proc_path[rd] = '\0'; | |
689 | return proc_path; | |
690 | } | |
691 | ||
61bb466e | 692 | /* Attach to process PID, then initialize for debugging it. */ |
f6ac5f3d PA |
693 | void |
694 | nto_procfs_target::attach (const char *args, int from_tty) | |
61bb466e KW |
695 | { |
696 | char *exec_file; | |
697 | int pid; | |
181e7f93 | 698 | struct inferior *inf; |
61bb466e | 699 | |
74164c56 | 700 | pid = parse_pid_to_attach (args); |
61bb466e KW |
701 | |
702 | if (pid == getpid ()) | |
8a3fe4f8 | 703 | error (_("Attaching GDB to itself is not a good idea...")); |
61bb466e KW |
704 | |
705 | if (from_tty) | |
706 | { | |
707 | exec_file = (char *) get_exec_file (0); | |
708 | ||
709 | if (exec_file) | |
710 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, | |
a068643d | 711 | target_pid_to_str (ptid_t (pid)).c_str ()); |
61bb466e KW |
712 | else |
713 | printf_unfiltered ("Attaching to %s\n", | |
a068643d | 714 | target_pid_to_str (ptid_t (pid)).c_str ()); |
61bb466e | 715 | } |
f2907e49 | 716 | inferior_ptid = do_attach (ptid_t (pid)); |
6c95b8df PA |
717 | inf = current_inferior (); |
718 | inferior_appeared (inf, pid); | |
181e7f93 | 719 | inf->attach_flag = 1; |
7f9f62ba | 720 | |
6a3cb8e8 PA |
721 | if (!target_is_pushed (ops)) |
722 | push_target (ops); | |
7f9f62ba | 723 | |
e8032dde | 724 | procfs_update_thread_list (ops); |
61bb466e KW |
725 | } |
726 | ||
f6ac5f3d PA |
727 | void |
728 | nto_procfs_target::post_attach (pid_t pid) | |
61bb466e | 729 | { |
61bb466e | 730 | if (exec_bfd) |
268a4a75 | 731 | solib_create_inferior_hook (0); |
61bb466e KW |
732 | } |
733 | ||
734 | static ptid_t | |
735 | do_attach (ptid_t ptid) | |
736 | { | |
737 | procfs_status status; | |
738 | struct sigevent event; | |
dc5dd1eb | 739 | char path[PATH_MAX]; |
61bb466e | 740 | |
609c3040 | 741 | snprintf (path, PATH_MAX - 1, "%s%s/%d/as", |
e99b03dc | 742 | (nodestr != NULL) ? nodestr : "", "/proc", ptid.pid ()); |
61bb466e KW |
743 | ctl_fd = open (path, O_RDWR); |
744 | if (ctl_fd == -1) | |
8a3fe4f8 | 745 | error (_("Couldn't open proc file %s, error %d (%s)"), path, errno, |
dc5dd1eb | 746 | safe_strerror (errno)); |
61bb466e | 747 | if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK) |
8a3fe4f8 | 748 | error (_("Couldn't stop process")); |
61bb466e KW |
749 | |
750 | /* Define a sigevent for process stopped notification. */ | |
751 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
752 | event.sigev_signo = SIGUSR1; | |
753 | event.sigev_code = 0; | |
754 | event.sigev_value.sival_ptr = NULL; | |
755 | event.sigev_priority = -1; | |
756 | devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0); | |
757 | ||
758 | if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK | |
759 | && status.flags & _DEBUG_FLAG_STOPPED) | |
e99b03dc | 760 | SignalKill (nto_node (), ptid.pid (), 0, SIGCONT, 0, 0); |
61bb466e | 761 | nto_init_solib_absolute_prefix (); |
e99b03dc | 762 | return ptid_t (ptid.pid (), 0, status.tid); |
61bb466e KW |
763 | } |
764 | ||
765 | /* Ask the user what to do when an interrupt is received. */ | |
766 | static void | |
dc5dd1eb | 767 | interrupt_query (void) |
61bb466e | 768 | { |
9e2f0ad4 HZ |
769 | if (query (_("Interrupted while waiting for the program.\n\ |
770 | Give up (and stop debugging it)? "))) | |
61bb466e | 771 | { |
bc1e6c81 | 772 | target_mourn_inferior (inferior_ptid); |
039e3c22 | 773 | quit (); |
61bb466e | 774 | } |
61bb466e KW |
775 | } |
776 | ||
777 | /* The user typed ^C twice. */ | |
778 | static void | |
bfedc46a | 779 | nto_handle_sigint_twice (int signo) |
61bb466e KW |
780 | { |
781 | signal (signo, ofunc); | |
782 | interrupt_query (); | |
bfedc46a | 783 | signal (signo, nto_handle_sigint_twice); |
61bb466e KW |
784 | } |
785 | ||
786 | static void | |
bfedc46a | 787 | nto_handle_sigint (int signo) |
61bb466e KW |
788 | { |
789 | /* If this doesn't work, try more severe steps. */ | |
bfedc46a | 790 | signal (signo, nto_handle_sigint_twice); |
61bb466e | 791 | |
e671cd59 | 792 | target_interrupt (); |
61bb466e KW |
793 | } |
794 | ||
f6ac5f3d PA |
795 | sptid_t |
796 | nto_procfs_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus, | |
797 | int options) | |
61bb466e KW |
798 | { |
799 | sigset_t set; | |
800 | siginfo_t info; | |
801 | procfs_status status; | |
802 | static int exit_signo = 0; /* To track signals that cause termination. */ | |
803 | ||
804 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
805 | ||
d7e15655 | 806 | if (inferior_ptid == null_ptid) |
61bb466e KW |
807 | { |
808 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 809 | ourstatus->value.sig = GDB_SIGNAL_0; |
61bb466e KW |
810 | exit_signo = 0; |
811 | return null_ptid; | |
812 | } | |
813 | ||
814 | sigemptyset (&set); | |
815 | sigaddset (&set, SIGUSR1); | |
816 | ||
817 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
818 | while (!(status.flags & _DEBUG_FLAG_ISTOP)) | |
819 | { | |
a40805d4 | 820 | ofunc = signal (SIGINT, nto_handle_sigint); |
61bb466e KW |
821 | sigwaitinfo (&set, &info); |
822 | signal (SIGINT, ofunc); | |
823 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
824 | } | |
825 | ||
a9889169 AR |
826 | nto_inferior_data (NULL)->stopped_flags = status.flags; |
827 | nto_inferior_data (NULL)->stopped_pc = status.ip; | |
828 | ||
61bb466e KW |
829 | if (status.flags & _DEBUG_FLAG_SSTEP) |
830 | { | |
831 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 832 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
833 | } |
834 | /* Was it a breakpoint? */ | |
835 | else if (status.flags & _DEBUG_FLAG_TRACE) | |
836 | { | |
837 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 838 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
61bb466e KW |
839 | } |
840 | else if (status.flags & _DEBUG_FLAG_ISTOP) | |
841 | { | |
842 | switch (status.why) | |
843 | { | |
844 | case _DEBUG_WHY_SIGNALLED: | |
845 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
846 | ourstatus->value.sig = | |
2ea28649 | 847 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
848 | exit_signo = 0; |
849 | break; | |
850 | case _DEBUG_WHY_FAULTED: | |
851 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
852 | if (status.info.si_signo == SIGTRAP) | |
853 | { | |
854 | ourstatus->value.sig = 0; | |
855 | exit_signo = 0; | |
856 | } | |
857 | else | |
858 | { | |
859 | ourstatus->value.sig = | |
2ea28649 | 860 | gdb_signal_from_host (status.info.si_signo); |
61bb466e KW |
861 | exit_signo = ourstatus->value.sig; |
862 | } | |
863 | break; | |
864 | ||
865 | case _DEBUG_WHY_TERMINATED: | |
866 | { | |
867 | int waitval = 0; | |
868 | ||
e99b03dc | 869 | waitpid (inferior_ptid.pid (), &waitval, WNOHANG); |
61bb466e KW |
870 | if (exit_signo) |
871 | { | |
872 | /* Abnormal death. */ | |
873 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
874 | ourstatus->value.sig = exit_signo; | |
875 | } | |
876 | else | |
877 | { | |
878 | /* Normal death. */ | |
879 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
880 | ourstatus->value.integer = WEXITSTATUS (waitval); | |
881 | } | |
882 | exit_signo = 0; | |
883 | break; | |
884 | } | |
885 | ||
886 | case _DEBUG_WHY_REQUESTED: | |
887 | /* We are assuming a requested stop is due to a SIGINT. */ | |
888 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 889 | ourstatus->value.sig = GDB_SIGNAL_INT; |
61bb466e KW |
890 | exit_signo = 0; |
891 | break; | |
892 | } | |
893 | } | |
894 | ||
fd79271b | 895 | return ptid_t (status.pid, 0, status.tid); |
61bb466e KW |
896 | } |
897 | ||
898 | /* Read the current values of the inferior's registers, both the | |
899 | general register set and floating point registers (if supported) | |
900 | and update gdb's idea of their current values. */ | |
f6ac5f3d PA |
901 | void |
902 | nto_procfs_target::fetch_registers (struct regcache *regcache, int regno) | |
61bb466e KW |
903 | { |
904 | union | |
905 | { | |
906 | procfs_greg greg; | |
907 | procfs_fpreg fpreg; | |
908 | procfs_altreg altreg; | |
909 | } | |
910 | reg; | |
911 | int regsize; | |
912 | ||
222312d3 | 913 | procfs_set_thread (regcache->ptid ()); |
61bb466e | 914 | if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK) |
56be3814 | 915 | nto_supply_gregset (regcache, (char *) ®.greg); |
61bb466e KW |
916 | if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size) |
917 | == EOK) | |
56be3814 | 918 | nto_supply_fpregset (regcache, (char *) ®.fpreg); |
61bb466e KW |
919 | if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size) |
920 | == EOK) | |
56be3814 | 921 | nto_supply_altregset (regcache, (char *) ®.altreg); |
61bb466e KW |
922 | } |
923 | ||
9d46c4e5 PA |
924 | /* Helper for procfs_xfer_partial that handles memory transfers. |
925 | Arguments are like target_xfer_partial. */ | |
61bb466e | 926 | |
9d46c4e5 PA |
927 | static enum target_xfer_status |
928 | procfs_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, | |
929 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
61bb466e | 930 | { |
9d46c4e5 PA |
931 | int nbytes; |
932 | ||
933 | if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) != (off_t) memaddr) | |
934 | return TARGET_XFER_E_IO; | |
935 | ||
936 | if (writebuf != NULL) | |
937 | nbytes = write (ctl_fd, writebuf, len); | |
938 | else | |
939 | nbytes = read (ctl_fd, readbuf, len); | |
940 | if (nbytes <= 0) | |
941 | return TARGET_XFER_E_IO; | |
942 | *xfered_len = nbytes; | |
943 | return TARGET_XFER_OK; | |
944 | } | |
945 | ||
946 | /* Target to_xfer_partial implementation. */ | |
61bb466e | 947 | |
f6ac5f3d PA |
948 | enum target_xfer_status |
949 | nto_procfs_target::xfer_partial (enum target_object object, | |
950 | const char *annex, gdb_byte *readbuf, | |
951 | const gdb_byte *writebuf, ULONGEST offset, | |
952 | ULONGEST len, ULONGEST *xfered_len) | |
9d46c4e5 PA |
953 | { |
954 | switch (object) | |
61bb466e | 955 | { |
9d46c4e5 PA |
956 | case TARGET_OBJECT_MEMORY: |
957 | return procfs_xfer_memory (readbuf, writebuf, offset, len, xfered_len); | |
8a6c0ccd AR |
958 | case TARGET_OBJECT_AUXV: |
959 | if (readbuf != NULL) | |
960 | { | |
961 | int err; | |
962 | CORE_ADDR initial_stack; | |
963 | debug_process_t procinfo; | |
964 | /* For 32-bit architecture, size of auxv_t is 8 bytes. */ | |
965 | const unsigned int sizeof_auxv_t = sizeof (auxv_t); | |
966 | const unsigned int sizeof_tempbuf = 20 * sizeof_auxv_t; | |
967 | int tempread; | |
968 | gdb_byte *const tempbuf = alloca (sizeof_tempbuf); | |
969 | ||
970 | if (tempbuf == NULL) | |
971 | return TARGET_XFER_E_IO; | |
972 | ||
973 | err = devctl (ctl_fd, DCMD_PROC_INFO, &procinfo, | |
974 | sizeof procinfo, 0); | |
975 | if (err != EOK) | |
976 | return TARGET_XFER_E_IO; | |
977 | ||
978 | initial_stack = procinfo.initial_stack; | |
979 | ||
980 | /* procfs is always 'self-hosted', no byte-order manipulation. */ | |
981 | tempread = nto_read_auxv_from_initial_stack (initial_stack, tempbuf, | |
982 | sizeof_tempbuf, | |
983 | sizeof (auxv_t)); | |
325fac50 | 984 | tempread = std::min (tempread, len) - offset; |
8a6c0ccd AR |
985 | memcpy (readbuf, tempbuf + offset, tempread); |
986 | *xfered_len = tempread; | |
987 | return tempread ? TARGET_XFER_OK : TARGET_XFER_EOF; | |
988 | } | |
989 | /* Fallthru */ | |
9d46c4e5 | 990 | default: |
4360561f TT |
991 | return this->beneath ()->xfer_partial (object, annex, |
992 | readbuf, writebuf, offset, len, | |
993 | xfered_len); | |
61bb466e | 994 | } |
61bb466e KW |
995 | } |
996 | ||
997 | /* Take a program previously attached to and detaches it. | |
998 | The program resumes execution and will no longer stop | |
999 | on signals, etc. We'd better not have left any breakpoints | |
1000 | in the program or it'll die when it hits one. */ | |
f6ac5f3d PA |
1001 | void |
1002 | nto_procfs_target::detach (inferior *inf, int from_tty) | |
61bb466e | 1003 | { |
7f9f62ba | 1004 | int pid; |
61bb466e | 1005 | |
0f48b757 PA |
1006 | target_announce_detach (); |
1007 | ||
61bb466e | 1008 | if (siggnal) |
e99b03dc | 1009 | SignalKill (nto_node (), inferior_ptid.pid (), 0, 0, 0, 0); |
61bb466e KW |
1010 | |
1011 | close (ctl_fd); | |
1012 | ctl_fd = -1; | |
7f9f62ba | 1013 | |
e99b03dc | 1014 | pid = inferior_ptid.pid (); |
61bb466e | 1015 | inferior_ptid = null_ptid; |
7f9f62ba PA |
1016 | detach_inferior (pid); |
1017 | init_thread_list (); | |
6a3cb8e8 | 1018 | inf_child_maybe_unpush_target (ops); |
61bb466e KW |
1019 | } |
1020 | ||
1021 | static int | |
1022 | procfs_breakpoint (CORE_ADDR addr, int type, int size) | |
1023 | { | |
1024 | procfs_break brk; | |
1025 | ||
1026 | brk.type = type; | |
1027 | brk.addr = addr; | |
1028 | brk.size = size; | |
1029 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1030 | if (errno != EOK) | |
1031 | return 1; | |
1032 | return 0; | |
1033 | } | |
1034 | ||
f6ac5f3d PA |
1035 | int |
1036 | nto_procfs_target::insert_breakpoint (struct gdbarch *gdbarch, | |
1037 | struct bp_target_info *bp_tgt) | |
61bb466e | 1038 | { |
0d5ed153 | 1039 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f | 1040 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, 0); |
61bb466e KW |
1041 | } |
1042 | ||
f6ac5f3d PA |
1043 | int |
1044 | nto_procfs_target::remove_breakpoint (struct gdbarch *gdbarch, | |
1045 | struct bp_target_info *bp_tgt, | |
1046 | enum remove_bp_reason reason) | |
61bb466e | 1047 | { |
8181d85f | 1048 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, -1); |
61bb466e KW |
1049 | } |
1050 | ||
f6ac5f3d PA |
1051 | int |
1052 | nto_procfs_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
1053 | struct bp_target_info *bp_tgt) | |
61bb466e | 1054 | { |
0d5ed153 | 1055 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f DJ |
1056 | return procfs_breakpoint (bp_tgt->placed_address, |
1057 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0); | |
61bb466e KW |
1058 | } |
1059 | ||
f6ac5f3d PA |
1060 | int |
1061 | nto_procfs_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
1062 | struct bp_target_info *bp_tgt) | |
61bb466e | 1063 | { |
8181d85f DJ |
1064 | return procfs_breakpoint (bp_tgt->placed_address, |
1065 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1); | |
61bb466e KW |
1066 | } |
1067 | ||
f6ac5f3d PA |
1068 | void |
1069 | nto_procfs_target::resume (ptid_t ptid, int step, enum gdb_signal signo) | |
61bb466e KW |
1070 | { |
1071 | int signal_to_pass; | |
1072 | procfs_status status; | |
14ef7606 | 1073 | sigset_t *run_fault = (sigset_t *) (void *) &run.fault; |
61bb466e | 1074 | |
d7e15655 | 1075 | if (inferior_ptid == null_ptid) |
61bb466e KW |
1076 | return; |
1077 | ||
d7e15655 | 1078 | procfs_set_thread (ptid == minus_one_ptid ? inferior_ptid : |
61bb466e KW |
1079 | ptid); |
1080 | ||
1081 | run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE; | |
1082 | if (step) | |
1083 | run.flags |= _DEBUG_RUN_STEP; | |
1084 | ||
14ef7606 AR |
1085 | sigemptyset (run_fault); |
1086 | sigaddset (run_fault, FLTBPT); | |
1087 | sigaddset (run_fault, FLTTRACE); | |
1088 | sigaddset (run_fault, FLTILL); | |
1089 | sigaddset (run_fault, FLTPRIV); | |
1090 | sigaddset (run_fault, FLTBOUNDS); | |
1091 | sigaddset (run_fault, FLTIOVF); | |
1092 | sigaddset (run_fault, FLTIZDIV); | |
1093 | sigaddset (run_fault, FLTFPE); | |
61bb466e | 1094 | /* Peter V will be changing this at some point. */ |
14ef7606 | 1095 | sigaddset (run_fault, FLTPAGE); |
61bb466e KW |
1096 | |
1097 | run.flags |= _DEBUG_RUN_ARM; | |
1098 | ||
2ea28649 | 1099 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
1100 | |
1101 | if (signal_to_pass) | |
1102 | { | |
1103 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
2ea28649 | 1104 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
1105 | if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED)) |
1106 | { | |
1107 | if (signal_to_pass != status.info.si_signo) | |
1108 | { | |
e99b03dc | 1109 | SignalKill (nto_node (), inferior_ptid.pid (), 0, |
d737fd7f | 1110 | signal_to_pass, 0, 0); |
61bb466e KW |
1111 | run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG; |
1112 | } | |
0df8b418 | 1113 | else /* Let it kill the program without telling us. */ |
61bb466e KW |
1114 | sigdelset (&run.trace, signal_to_pass); |
1115 | } | |
1116 | } | |
1117 | else | |
1118 | run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT; | |
1119 | ||
1120 | errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0); | |
1121 | if (errno != EOK) | |
1122 | { | |
9b20d036 | 1123 | perror (_("run error!\n")); |
61bb466e KW |
1124 | return; |
1125 | } | |
1126 | } | |
1127 | ||
f6ac5f3d PA |
1128 | void |
1129 | nto_procfs_target::mourn_inferior () | |
61bb466e | 1130 | { |
d7e15655 | 1131 | if (inferior_ptid != null_ptid) |
61bb466e | 1132 | { |
e99b03dc | 1133 | SignalKill (nto_node (), inferior_ptid.pid (), 0, SIGKILL, 0, 0); |
61bb466e KW |
1134 | close (ctl_fd); |
1135 | } | |
1136 | inferior_ptid = null_ptid; | |
1137 | init_thread_list (); | |
c1ee2fb3 | 1138 | inf_child_mourn_inferior (ops); |
61bb466e KW |
1139 | } |
1140 | ||
1141 | /* This function breaks up an argument string into an argument | |
1142 | vector suitable for passing to execvp(). | |
1143 | E.g., on "run a b c d" this routine would get as input | |
1144 | the string "a b c d", and as output it would fill in argv with | |
1145 | the four arguments "a", "b", "c", "d". The only additional | |
1146 | functionality is simple quoting. The gdb command: | |
1147 | run a "b c d" f | |
1148 | will fill in argv with the three args "a", "b c d", "e". */ | |
1149 | static void | |
1150 | breakup_args (char *scratch, char **argv) | |
1151 | { | |
1152 | char *pp, *cp = scratch; | |
1153 | char quoting = 0; | |
1154 | ||
1155 | for (;;) | |
1156 | { | |
1157 | /* Scan past leading separators. */ | |
1158 | quoting = 0; | |
1159 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') | |
1160 | cp++; | |
1161 | ||
1162 | /* Break if at end of string. */ | |
1163 | if (*cp == '\0') | |
1164 | break; | |
1165 | ||
1166 | /* Take an arg. */ | |
1167 | if (*cp == '"') | |
1168 | { | |
1169 | cp++; | |
1170 | quoting = strchr (cp, '"') ? 1 : 0; | |
1171 | } | |
1172 | ||
1173 | *argv++ = cp; | |
1174 | ||
1175 | /* Scan for next arg separator. */ | |
1176 | pp = cp; | |
1177 | if (quoting) | |
1178 | cp = strchr (pp, '"'); | |
1179 | if ((cp == NULL) || (!quoting)) | |
1180 | cp = strchr (pp, ' '); | |
1181 | if (cp == NULL) | |
1182 | cp = strchr (pp, '\t'); | |
1183 | if (cp == NULL) | |
1184 | cp = strchr (pp, '\n'); | |
1185 | ||
1186 | /* No separators => end of string => break. */ | |
1187 | if (cp == NULL) | |
1188 | { | |
1189 | pp = cp; | |
1190 | break; | |
1191 | } | |
1192 | ||
1193 | /* Replace the separator with a terminator. */ | |
1194 | *cp++ = '\0'; | |
1195 | } | |
1196 | ||
1197 | /* Execv requires a null-terminated arg vector. */ | |
1198 | *argv = NULL; | |
1199 | } | |
1200 | ||
f6ac5f3d PA |
1201 | void |
1202 | nto_procfs_target::create_inferior (const char *exec_file, | |
1203 | const std::string &allargs, | |
1204 | char **env, int from_tty) | |
61bb466e KW |
1205 | { |
1206 | struct inheritance inherit; | |
1207 | pid_t pid; | |
1208 | int flags, errn; | |
1209 | char **argv, *args; | |
3cb3b8df | 1210 | const char *in = "", *out = "", *err = ""; |
61bb466e KW |
1211 | int fd, fds[3]; |
1212 | sigset_t set; | |
3cb3b8df | 1213 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
3fdfcbf1 | 1214 | struct inferior *inf; |
61bb466e | 1215 | |
7c5ded6a | 1216 | argv = xmalloc ((allargs.size () / (unsigned) 2 + 2) * |
61bb466e KW |
1217 | sizeof (*argv)); |
1218 | argv[0] = get_exec_file (1); | |
1219 | if (!argv[0]) | |
1220 | { | |
1221 | if (exec_file) | |
1222 | argv[0] = exec_file; | |
1223 | else | |
1224 | return; | |
1225 | } | |
1226 | ||
7c5ded6a | 1227 | args = xstrdup (allargs.c_str ()); |
609c3040 | 1228 | breakup_args (args, (exec_file != NULL) ? &argv[1] : &argv[0]); |
61bb466e KW |
1229 | |
1230 | argv = nto_parse_redirection (argv, &in, &out, &err); | |
1231 | ||
1232 | fds[0] = STDIN_FILENO; | |
1233 | fds[1] = STDOUT_FILENO; | |
1234 | fds[2] = STDERR_FILENO; | |
1235 | ||
1236 | /* If the user specified I/O via gdb's --tty= arg, use it, but only | |
1237 | if the i/o is not also being specified via redirection. */ | |
1238 | if (inferior_io_terminal) | |
1239 | { | |
1240 | if (!in[0]) | |
1241 | in = inferior_io_terminal; | |
1242 | if (!out[0]) | |
1243 | out = inferior_io_terminal; | |
1244 | if (!err[0]) | |
1245 | err = inferior_io_terminal; | |
1246 | } | |
1247 | ||
1248 | if (in[0]) | |
1249 | { | |
1250 | fd = open (in, O_RDONLY); | |
1251 | if (fd == -1) | |
1252 | perror (in); | |
1253 | else | |
1254 | fds[0] = fd; | |
1255 | } | |
1256 | if (out[0]) | |
1257 | { | |
1258 | fd = open (out, O_WRONLY); | |
1259 | if (fd == -1) | |
1260 | perror (out); | |
1261 | else | |
1262 | fds[1] = fd; | |
1263 | } | |
1264 | if (err[0]) | |
1265 | { | |
1266 | fd = open (err, O_WRONLY); | |
1267 | if (fd == -1) | |
1268 | perror (err); | |
1269 | else | |
1270 | fds[2] = fd; | |
1271 | } | |
1272 | ||
1273 | /* Clear any pending SIGUSR1's but keep the behavior the same. */ | |
1274 | signal (SIGUSR1, signal (SIGUSR1, SIG_IGN)); | |
1275 | ||
1276 | sigemptyset (&set); | |
1277 | sigaddset (&set, SIGUSR1); | |
1278 | sigprocmask (SIG_UNBLOCK, &set, NULL); | |
1279 | ||
1280 | memset (&inherit, 0, sizeof (inherit)); | |
1281 | ||
1282 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0) | |
1283 | { | |
d737fd7f | 1284 | inherit.nd = nto_node (); |
61bb466e KW |
1285 | inherit.flags |= SPAWN_SETND; |
1286 | inherit.flags &= ~SPAWN_EXEC; | |
1287 | } | |
1288 | inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD; | |
1289 | inherit.pgroup = SPAWN_NEWPGROUP; | |
1290 | pid = spawnp (argv[0], 3, fds, &inherit, argv, | |
1291 | ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0); | |
1292 | xfree (args); | |
1293 | ||
1294 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1295 | ||
1296 | if (pid == -1) | |
8a3fe4f8 | 1297 | error (_("Error spawning %s: %d (%s)"), argv[0], errno, |
d737fd7f | 1298 | safe_strerror (errno)); |
61bb466e KW |
1299 | |
1300 | if (fds[0] != STDIN_FILENO) | |
1301 | close (fds[0]); | |
1302 | if (fds[1] != STDOUT_FILENO) | |
1303 | close (fds[1]); | |
1304 | if (fds[2] != STDERR_FILENO) | |
1305 | close (fds[2]); | |
1306 | ||
f2907e49 | 1307 | inferior_ptid = do_attach (ptid_t (pid)); |
e8032dde | 1308 | procfs_update_thread_list (ops); |
61bb466e | 1309 | |
6c95b8df PA |
1310 | inf = current_inferior (); |
1311 | inferior_appeared (inf, pid); | |
3fdfcbf1 | 1312 | inf->attach_flag = 0; |
7f9f62ba | 1313 | |
61bb466e KW |
1314 | flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */ |
1315 | errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0); | |
1316 | if (errn != EOK) | |
1317 | { | |
1318 | /* FIXME: expected warning? */ | |
1319 | /* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n", | |
1320 | errn, strerror(errn) ); */ | |
1321 | } | |
6a3cb8e8 PA |
1322 | if (!target_is_pushed (ops)) |
1323 | push_target (ops); | |
223ffa71 | 1324 | target_terminal::init (); |
61bb466e | 1325 | |
61bb466e KW |
1326 | if (exec_bfd != NULL |
1327 | || (symfile_objfile != NULL && symfile_objfile->obfd != NULL)) | |
268a4a75 | 1328 | solib_create_inferior_hook (0); |
61bb466e KW |
1329 | } |
1330 | ||
f6ac5f3d PA |
1331 | void |
1332 | nto_procfs_target::interrupt () | |
61bb466e KW |
1333 | { |
1334 | devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0); | |
1335 | } | |
1336 | ||
f6ac5f3d PA |
1337 | void |
1338 | nto_procfs_target::kill () | |
61bb466e | 1339 | { |
bc1e6c81 | 1340 | target_mourn_inferior (inferior_ptid); |
61bb466e KW |
1341 | } |
1342 | ||
61bb466e KW |
1343 | /* Fill buf with regset and return devctl cmd to do the setting. Return |
1344 | -1 if we fail to get the regset. Store size of regset in regsize. */ | |
1345 | static int | |
1346 | get_regset (int regset, char *buf, int bufsize, int *regsize) | |
1347 | { | |
1348 | int dev_get, dev_set; | |
1349 | switch (regset) | |
1350 | { | |
1351 | case NTO_REG_GENERAL: | |
1352 | dev_get = DCMD_PROC_GETGREG; | |
1353 | dev_set = DCMD_PROC_SETGREG; | |
1354 | break; | |
1355 | ||
1356 | case NTO_REG_FLOAT: | |
1357 | dev_get = DCMD_PROC_GETFPREG; | |
1358 | dev_set = DCMD_PROC_SETFPREG; | |
1359 | break; | |
1360 | ||
1361 | case NTO_REG_ALT: | |
1362 | dev_get = DCMD_PROC_GETALTREG; | |
1363 | dev_set = DCMD_PROC_SETALTREG; | |
1364 | break; | |
1365 | ||
1366 | case NTO_REG_SYSTEM: | |
1367 | default: | |
1368 | return -1; | |
1369 | } | |
97c44116 | 1370 | if (devctl (ctl_fd, dev_get, buf, bufsize, regsize) != EOK) |
61bb466e KW |
1371 | return -1; |
1372 | ||
1373 | return dev_set; | |
1374 | } | |
1375 | ||
f6ac5f3d PA |
1376 | void |
1377 | nto_procfs_target::store_registers (struct regcache *regcache, int regno) | |
61bb466e KW |
1378 | { |
1379 | union | |
1380 | { | |
1381 | procfs_greg greg; | |
1382 | procfs_fpreg fpreg; | |
1383 | procfs_altreg altreg; | |
1384 | } | |
1385 | reg; | |
1386 | unsigned off; | |
1387 | int len, regset, regsize, dev_set, err; | |
1388 | char *data; | |
222312d3 | 1389 | ptid_t ptid = regcache->ptid (); |
61bb466e | 1390 | |
d7e15655 | 1391 | if (ptid == null_ptid) |
61bb466e | 1392 | return; |
bcc0c096 | 1393 | procfs_set_thread (ptid); |
61bb466e KW |
1394 | |
1395 | if (regno == -1) | |
1396 | { | |
1397 | for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++) | |
1398 | { | |
1399 | dev_set = get_regset (regset, (char *) ®, | |
1400 | sizeof (reg), ®size); | |
1401 | if (dev_set == -1) | |
1402 | continue; | |
1403 | ||
56be3814 | 1404 | if (nto_regset_fill (regcache, regset, (char *) ®) == -1) |
61bb466e KW |
1405 | continue; |
1406 | ||
1407 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1408 | if (err != EOK) | |
1409 | fprintf_unfiltered (gdb_stderr, | |
1410 | "Warning unable to write regset %d: %s\n", | |
dc5dd1eb | 1411 | regno, safe_strerror (err)); |
61bb466e KW |
1412 | } |
1413 | } | |
1414 | else | |
1415 | { | |
1416 | regset = nto_regset_id (regno); | |
1417 | if (regset == -1) | |
1418 | return; | |
1419 | ||
1420 | dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size); | |
1421 | if (dev_set == -1) | |
1422 | return; | |
1423 | ||
ac7936df | 1424 | len = nto_register_area (regcache->arch (), |
60441ab9 | 1425 | regno, regset, &off); |
61bb466e KW |
1426 | |
1427 | if (len < 1) | |
1428 | return; | |
1429 | ||
34a79281 | 1430 | regcache->raw_collect (regno, (char *) ® + off); |
61bb466e KW |
1431 | |
1432 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1433 | if (err != EOK) | |
1434 | fprintf_unfiltered (gdb_stderr, | |
1435 | "Warning unable to write regset %d: %s\n", regno, | |
dc5dd1eb | 1436 | safe_strerror (err)); |
61bb466e KW |
1437 | } |
1438 | } | |
1439 | ||
2455069d UW |
1440 | /* Set list of signals to be handled in the target. */ |
1441 | ||
f6ac5f3d | 1442 | void |
adc6a863 PA |
1443 | nto_procfs_target::pass_signals |
1444 | (gdb::array_view<const unsigned char> pass_signals) | |
61bb466e KW |
1445 | { |
1446 | int signo; | |
1447 | ||
2455069d UW |
1448 | sigfillset (&run.trace); |
1449 | ||
61bb466e KW |
1450 | for (signo = 1; signo < NSIG; signo++) |
1451 | { | |
2ea28649 | 1452 | int target_signo = gdb_signal_from_host (signo); |
adc6a863 | 1453 | if (target_signo < pass_signals.size () && pass_signals[target_signo]) |
2455069d | 1454 | sigdelset (&run.trace, signo); |
61bb466e KW |
1455 | } |
1456 | } | |
1457 | ||
a068643d | 1458 | std::string |
f6ac5f3d | 1459 | nto_procfs_target::pid_to_str (ptid_t ptid) |
61bb466e | 1460 | { |
a068643d | 1461 | int pid, tid; |
61bb466e KW |
1462 | struct tidinfo *tip; |
1463 | ||
e99b03dc | 1464 | pid = ptid.pid (); |
cc6bcb54 | 1465 | tid = ptid.tid (); |
61bb466e | 1466 | |
61bb466e KW |
1467 | #if 0 /* NYI */ |
1468 | tip = procfs_thread_info (pid, tid); | |
1469 | if (tip != NULL) | |
dc5dd1eb | 1470 | snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state); |
61bb466e KW |
1471 | #endif |
1472 | ||
a068643d | 1473 | return string_printf ("process %d", pid); |
61bb466e KW |
1474 | } |
1475 | ||
132f8e03 PA |
1476 | /* to_can_run implementation for "target procfs". Note this really |
1477 | means "can this target be the default run target", which there can | |
1478 | be only one, and we make it be "target native" like other ports. | |
1479 | "target procfs <node>" wouldn't make sense as default run target, as | |
1480 | it needs <node>. */ | |
ee8e9165 | 1481 | |
f6ac5f3d PA |
1482 | int |
1483 | nto_procfs_target::can_run () | |
132f8e03 PA |
1484 | { |
1485 | return 0; | |
1486 | } | |
1487 | ||
1488 | /* "target procfs". */ | |
f6ac5f3d | 1489 | static nto_procfs_target_procfs nto_procfs_ops; |
132f8e03 | 1490 | |
6a3cb8e8 | 1491 | /* "target native". */ |
f6ac5f3d | 1492 | static nto_procfs_target_native nto_native_ops; |
6a3cb8e8 | 1493 | |
132f8e03 PA |
1494 | /* Create the "native" and "procfs" targets. */ |
1495 | ||
1496 | static void | |
1497 | init_procfs_targets (void) | |
61bb466e | 1498 | { |
132f8e03 | 1499 | /* Register "target native". This is the default run target. */ |
d9f719f1 PA |
1500 | add_target (nto_native_target_info, inf_child_open_target); |
1501 | set_native_target (&nto_native_ops); | |
132f8e03 PA |
1502 | |
1503 | /* Register "target procfs <node>". */ | |
d9f719f1 | 1504 | add_target (nto_procfs_target_info, inf_child_open_target); |
61bb466e KW |
1505 | } |
1506 | ||
1507 | #define OSTYPE_NTO 1 | |
1508 | ||
1509 | void | |
dc5dd1eb | 1510 | _initialize_procfs (void) |
61bb466e KW |
1511 | { |
1512 | sigset_t set; | |
1513 | ||
132f8e03 | 1514 | init_procfs_targets (); |
61bb466e KW |
1515 | |
1516 | /* We use SIGUSR1 to gain control after we block waiting for a process. | |
1517 | We use sigwaitevent to wait. */ | |
1518 | sigemptyset (&set); | |
1519 | sigaddset (&set, SIGUSR1); | |
1520 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1521 | ||
2455069d UW |
1522 | /* Initially, make sure all signals are reported. */ |
1523 | sigfillset (&run.trace); | |
61bb466e KW |
1524 | |
1525 | /* Stuff some information. */ | |
1526 | nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags; | |
1527 | nto_cpuinfo_valid = 1; | |
1528 | ||
1bedd215 AC |
1529 | add_info ("pidlist", procfs_pidlist, _("pidlist")); |
1530 | add_info ("meminfo", procfs_meminfo, _("memory information")); | |
d737fd7f KW |
1531 | |
1532 | nto_is_nto_target = procfs_is_nto_target; | |
61bb466e KW |
1533 | } |
1534 | ||
1535 | ||
1536 | static int | |
f486487f | 1537 | procfs_hw_watchpoint (int addr, int len, enum target_hw_bp_type type) |
61bb466e KW |
1538 | { |
1539 | procfs_break brk; | |
1540 | ||
1541 | switch (type) | |
1542 | { | |
f486487f | 1543 | case hw_read: |
61bb466e KW |
1544 | brk.type = _DEBUG_BREAK_RD; |
1545 | break; | |
f486487f | 1546 | case hw_access: |
61bb466e KW |
1547 | brk.type = _DEBUG_BREAK_RW; |
1548 | break; | |
1549 | default: /* Modify. */ | |
1550 | /* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */ | |
1551 | brk.type = _DEBUG_BREAK_RW; | |
1552 | } | |
1553 | brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */ | |
1554 | brk.addr = addr; | |
1555 | brk.size = len; | |
1556 | ||
1557 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1558 | if (errno != EOK) | |
1559 | { | |
9b20d036 | 1560 | perror (_("Failed to set hardware watchpoint")); |
61bb466e KW |
1561 | return -1; |
1562 | } | |
1563 | return 0; | |
1564 | } | |
1565 | ||
57810aa7 | 1566 | bool |
f6ac5f3d PA |
1567 | nto_procfs_target::can_use_hw_breakpoint (enum bptype type, |
1568 | int cnt, int othertype) | |
61bb466e KW |
1569 | { |
1570 | return 1; | |
1571 | } | |
1572 | ||
f6ac5f3d PA |
1573 | int |
1574 | nto_procfs_target::remove_hw_watchpoint (CORE_ADDR addr, int len, | |
1575 | enum target_hw_bp_type type, | |
1576 | struct expression *cond) | |
61bb466e KW |
1577 | { |
1578 | return procfs_hw_watchpoint (addr, -1, type); | |
1579 | } | |
1580 | ||
f6ac5f3d PA |
1581 | int |
1582 | nto_procfs_target::insert_hw_watchpoint (CORE_ADDR addr, int len, | |
1583 | enum target_hw_bp_type type, | |
1584 | struct expression *cond) | |
61bb466e KW |
1585 | { |
1586 | return procfs_hw_watchpoint (addr, len, type); | |
1587 | } | |
1588 | ||
57810aa7 | 1589 | bool |
f6ac5f3d | 1590 | nto_procfs_target::stopped_by_watchpoint () |
61bb466e | 1591 | { |
a9889169 AR |
1592 | /* NOTE: nto_stopped_by_watchpoint will be called ONLY while we are |
1593 | stopped due to a SIGTRAP. This assumes gdb works in 'all-stop' mode; | |
1594 | future gdb versions will likely run in 'non-stop' mode in which case | |
1595 | we will have to store/examine statuses per thread in question. | |
1596 | Until then, this will work fine. */ | |
1597 | ||
1598 | struct inferior *inf = current_inferior (); | |
1599 | struct nto_inferior_data *inf_data; | |
1600 | ||
1601 | gdb_assert (inf != NULL); | |
1602 | ||
1603 | inf_data = nto_inferior_data (inf); | |
1604 | ||
1605 | return inf_data->stopped_flags | |
1606 | & (_DEBUG_FLAG_TRACE_RD | |
1607 | | _DEBUG_FLAG_TRACE_WR | |
1608 | | _DEBUG_FLAG_TRACE_MODIFY); | |
61bb466e | 1609 | } |