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Commit | Line | Data |
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61bb466e | 1 | /* Machine independent support for QNX Neutrino /proc (process file system) |
0df8b418 | 2 | for GDB. Written by Colin Burgess at QNX Software Systems Limited. |
61bb466e | 3 | |
213516ef | 4 | Copyright (C) 2003-2023 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 | ||
b60cea74 | 72 | ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override; |
f6ac5f3d PA |
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 | ||
0e90c441 | 124 | const char *pid_to_exec_file (int pid) override; |
f6ac5f3d PA |
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) | |
6cb06a8c TT |
223 | gdb_printf ("QNX Net Manager not found.\n"); |
224 | gdb_printf ("Invalid QNX node %s: error %d (%s).\n", nodestr, | |
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 | 243 | { |
6cb06a8c TT |
244 | gdb_printf ("Error opening %s : %d (%s)\n", nto_procfs_path, errno, |
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 | 251 | { |
6cb06a8c TT |
252 | gdb_printf ("Error getting size: %d (%s)\n", errno, |
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 | 261 | { |
6cb06a8c TT |
262 | gdb_printf ("Memory error: %d (%s)\n", errno, |
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 | 270 | { |
6cb06a8c TT |
271 | gdb_printf ("Error getting sysinfo: %d (%s)\n", errno, |
272 | safe_strerror (errno)); | |
8a3fe4f8 | 273 | error (_("Devctl failed.")); |
61bb466e KW |
274 | } |
275 | else | |
276 | { | |
277 | if (sysinfo->type != | |
99d9c3b9 SM |
278 | nto_map_arch_to_cputype |
279 | (gdbarch_bfd_arch_info | |
280 | (current_inferior ()->arch ())->arch_name)) | |
9fe4a216 | 281 | error (_("Invalid target CPU.")); |
61bb466e KW |
282 | } |
283 | } | |
284 | } | |
6a3cb8e8 | 285 | |
f6ac5f3d | 286 | inf_child_target::open (arg, from_tty); |
6cb06a8c | 287 | gdb_printf ("Debugging using %s\n", nto_procfs_path); |
61bb466e KW |
288 | } |
289 | ||
290 | static void | |
291 | procfs_set_thread (ptid_t ptid) | |
292 | { | |
293 | pid_t tid; | |
294 | ||
cc6bcb54 | 295 | tid = ptid.tid (); |
61bb466e KW |
296 | devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0); |
297 | } | |
298 | ||
57810aa7 PA |
299 | /* Return true if the thread TH is still alive. */ |
300 | ||
301 | bool | |
f6ac5f3d | 302 | nto_procfs_target::thread_alive (ptid_t ptid) |
61bb466e KW |
303 | { |
304 | pid_t tid; | |
745a434e AR |
305 | pid_t pid; |
306 | procfs_status status; | |
307 | int err; | |
61bb466e | 308 | |
cc6bcb54 | 309 | tid = ptid.tid (); |
e99b03dc | 310 | pid = ptid.pid (); |
745a434e AR |
311 | |
312 | if (kill (pid, 0) == -1) | |
57810aa7 | 313 | return false; |
745a434e AR |
314 | |
315 | status.tid = tid; | |
316 | if ((err = devctl (ctl_fd, DCMD_PROC_TIDSTATUS, | |
317 | &status, sizeof (status), 0)) != EOK) | |
57810aa7 | 318 | return false; |
745a434e AR |
319 | |
320 | /* Thread is alive or dead but not yet joined, | |
321 | or dead and there is an alive (or dead unjoined) thread with | |
322 | higher tid. | |
323 | ||
324 | If the tid is not the same as requested, requested tid is dead. */ | |
325 | return (status.tid == tid) && (status.state != STATE_DEAD); | |
326 | } | |
327 | ||
328 | static void | |
329 | update_thread_private_data_name (struct thread_info *new_thread, | |
330 | const char *newname) | |
331 | { | |
7aabaf9d | 332 | nto_thread_info *pti = get_nto_thread_info (new_thread); |
745a434e AR |
333 | |
334 | gdb_assert (newname != NULL); | |
335 | gdb_assert (new_thread != NULL); | |
7aabaf9d SM |
336 | |
337 | if (pti) | |
745a434e | 338 | { |
7aabaf9d SM |
339 | pti = new nto_thread_info; |
340 | new_thread->priv.reset (pti); | |
745a434e | 341 | } |
7aabaf9d SM |
342 | |
343 | pti->name = newname; | |
745a434e AR |
344 | } |
345 | ||
346 | static void | |
347 | update_thread_private_data (struct thread_info *new_thread, | |
348 | pthread_t tid, int state, int flags) | |
349 | { | |
745a434e AR |
350 | procfs_info pidinfo; |
351 | struct _thread_name *tn; | |
352 | procfs_threadctl tctl; | |
353 | ||
354 | #if _NTO_VERSION > 630 | |
355 | gdb_assert (new_thread != NULL); | |
356 | ||
357 | if (devctl (ctl_fd, DCMD_PROC_INFO, &pidinfo, | |
358 | sizeof(pidinfo), 0) != EOK) | |
359 | return; | |
360 | ||
361 | memset (&tctl, 0, sizeof (tctl)); | |
362 | tctl.cmd = _NTO_TCTL_NAME; | |
363 | tn = (struct _thread_name *) (&tctl.data); | |
364 | ||
365 | /* Fetch name for the given thread. */ | |
366 | tctl.tid = tid; | |
367 | tn->name_buf_len = sizeof (tctl.data) - sizeof (*tn); | |
368 | tn->new_name_len = -1; /* Getting, not setting. */ | |
369 | if (devctl (ctl_fd, DCMD_PROC_THREADCTL, &tctl, sizeof (tctl), NULL) != EOK) | |
370 | tn->name_buf[0] = '\0'; | |
371 | ||
372 | tn->name_buf[_NTO_THREAD_NAME_MAX] = '\0'; | |
373 | ||
374 | update_thread_private_data_name (new_thread, tn->name_buf); | |
375 | ||
7aabaf9d | 376 | nto_thread_info *pti = get_nto_thread_info (new_thread); |
745a434e AR |
377 | pti->tid = tid; |
378 | pti->state = state; | |
379 | pti->flags = flags; | |
380 | #endif /* _NTO_VERSION */ | |
61bb466e KW |
381 | } |
382 | ||
f6ac5f3d PA |
383 | void |
384 | nto_procfs_target::update_thread_list () | |
61bb466e KW |
385 | { |
386 | procfs_status status; | |
387 | pid_t pid; | |
388 | ptid_t ptid; | |
745a434e AR |
389 | pthread_t tid; |
390 | struct thread_info *new_thread; | |
61bb466e KW |
391 | |
392 | if (ctl_fd == -1) | |
393 | return; | |
394 | ||
e8032dde PA |
395 | prune_threads (); |
396 | ||
ebe84f23 | 397 | pid = current_inferior ()->pid; |
61bb466e | 398 | |
745a434e AR |
399 | status.tid = 1; |
400 | ||
401 | for (tid = 1;; ++tid) | |
61bb466e | 402 | { |
745a434e AR |
403 | if (status.tid == tid |
404 | && (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0) | |
405 | != EOK)) | |
61bb466e | 406 | break; |
745a434e AR |
407 | if (status.tid != tid) |
408 | /* The reason why this would not be equal is that devctl might have | |
409 | returned different tid, meaning the requested tid no longer exists | |
410 | (e.g. thread exited). */ | |
411 | continue; | |
fd79271b | 412 | ptid = ptid_t (pid, 0, tid); |
9213a6d7 | 413 | new_thread = this->find_thread (ptid); |
745a434e AR |
414 | if (!new_thread) |
415 | new_thread = add_thread (ptid); | |
416 | update_thread_private_data (new_thread, tid, status.state, 0); | |
417 | status.tid++; | |
61bb466e KW |
418 | } |
419 | return; | |
420 | } | |
421 | ||
774ee6d2 | 422 | static void |
1d12d88f | 423 | procfs_pidlist (const char *args, int from_tty) |
61bb466e | 424 | { |
61bb466e | 425 | struct dirent *dirp = NULL; |
609c3040 | 426 | char buf[PATH_MAX]; |
61bb466e KW |
427 | procfs_info *pidinfo = NULL; |
428 | procfs_debuginfo *info = NULL; | |
429 | procfs_status *status = NULL; | |
430 | pid_t num_threads = 0; | |
431 | pid_t pid; | |
432 | char name[512]; | |
609c3040 | 433 | char procfs_dir[PATH_MAX]; |
61bb466e | 434 | |
609c3040 AR |
435 | snprintf (procfs_dir, sizeof (procfs_dir), "%s%s", |
436 | (nodestr != NULL) ? nodestr : "", "/proc"); | |
437 | ||
f0b3976b | 438 | gdb_dir_up dp (opendir (procfs_dir)); |
61bb466e KW |
439 | if (dp == NULL) |
440 | { | |
6cb06a8c TT |
441 | gdb_printf (gdb_stderr, "failed to opendir \"%s\" - %d (%s)", |
442 | procfs_dir, errno, safe_strerror (errno)); | |
61bb466e KW |
443 | return; |
444 | } | |
445 | ||
446 | /* Start scan at first pid. */ | |
f0b3976b | 447 | rewinddir (dp.get ()); |
61bb466e KW |
448 | |
449 | do | |
450 | { | |
451 | /* Get the right pid and procfs path for the pid. */ | |
452 | do | |
453 | { | |
f0b3976b | 454 | dirp = readdir (dp.get ()); |
61bb466e | 455 | if (dirp == NULL) |
f0b3976b | 456 | return; |
609c3040 AR |
457 | snprintf (buf, sizeof (buf), "%s%s/%s/as", |
458 | (nodestr != NULL) ? nodestr : "", | |
459 | "/proc", dirp->d_name); | |
61bb466e KW |
460 | pid = atoi (dirp->d_name); |
461 | } | |
462 | while (pid == 0); | |
463 | ||
0df8b418 | 464 | /* Open the procfs path. */ |
5dc1a704 TT |
465 | scoped_fd fd (open (buf, O_RDONLY)); |
466 | if (fd.get () == -1) | |
61bb466e | 467 | { |
6cb06a8c TT |
468 | gdb_printf (gdb_stderr, "failed to open %s - %d (%s)\n", |
469 | buf, errno, safe_strerror (errno)); | |
609c3040 | 470 | continue; |
61bb466e KW |
471 | } |
472 | ||
473 | pidinfo = (procfs_info *) buf; | |
5dc1a704 | 474 | if (devctl (fd.get (), DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK) |
61bb466e | 475 | { |
6cb06a8c TT |
476 | gdb_printf (gdb_stderr, |
477 | "devctl DCMD_PROC_INFO failed - %d (%s)\n", | |
478 | errno, safe_strerror (errno)); | |
61bb466e KW |
479 | break; |
480 | } | |
481 | num_threads = pidinfo->num_threads; | |
482 | ||
483 | info = (procfs_debuginfo *) buf; | |
5dc1a704 TT |
484 | if (devctl (fd.get (), DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0) |
485 | != EOK) | |
61bb466e KW |
486 | strcpy (name, "unavailable"); |
487 | else | |
488 | strcpy (name, info->path); | |
489 | ||
490 | /* Collect state info on all the threads. */ | |
491 | status = (procfs_status *) buf; | |
492 | for (status->tid = 1; status->tid <= num_threads; status->tid++) | |
493 | { | |
609c3040 | 494 | const int err |
5dc1a704 | 495 | = devctl (fd.get (), DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0); |
6cb06a8c | 496 | gdb_printf ("%s - %d", name, pid); |
609c3040 | 497 | if (err == EOK && status->tid != 0) |
6cb06a8c | 498 | gdb_printf ("/%d\n", status->tid); |
609c3040 AR |
499 | else |
500 | { | |
6cb06a8c | 501 | gdb_printf ("\n"); |
609c3040 AR |
502 | break; |
503 | } | |
61bb466e | 504 | } |
61bb466e KW |
505 | } |
506 | while (dirp != NULL); | |
61bb466e KW |
507 | } |
508 | ||
774ee6d2 | 509 | static void |
1d12d88f | 510 | procfs_meminfo (const char *args, int from_tty) |
61bb466e KW |
511 | { |
512 | procfs_mapinfo *mapinfos = NULL; | |
513 | static int num_mapinfos = 0; | |
514 | procfs_mapinfo *mapinfo_p, *mapinfo_p2; | |
515 | int flags = ~0, err, num, i, j; | |
516 | ||
517 | struct | |
518 | { | |
519 | procfs_debuginfo info; | |
520 | char buff[_POSIX_PATH_MAX]; | |
521 | } map; | |
522 | ||
523 | struct info | |
524 | { | |
525 | unsigned addr; | |
526 | unsigned size; | |
527 | unsigned flags; | |
528 | unsigned debug_vaddr; | |
529 | unsigned long long offset; | |
530 | }; | |
531 | ||
532 | struct printinfo | |
533 | { | |
534 | unsigned long long ino; | |
535 | unsigned dev; | |
536 | struct info text; | |
537 | struct info data; | |
538 | char name[256]; | |
539 | } printme; | |
540 | ||
541 | /* Get the number of map entrys. */ | |
542 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num); | |
543 | if (err != EOK) | |
544 | { | |
d737fd7f KW |
545 | printf ("failed devctl num mapinfos - %d (%s)\n", err, |
546 | safe_strerror (err)); | |
61bb466e KW |
547 | return; |
548 | } | |
549 | ||
774ee6d2 | 550 | mapinfos = XNEWVEC (procfs_mapinfo, num); |
61bb466e KW |
551 | |
552 | num_mapinfos = num; | |
553 | mapinfo_p = mapinfos; | |
554 | ||
555 | /* Fill the map entrys. */ | |
556 | err = devctl (ctl_fd, DCMD_PROC_MAPINFO, mapinfo_p, num | |
557 | * sizeof (procfs_mapinfo), &num); | |
558 | if (err != EOK) | |
559 | { | |
5483d879 | 560 | printf ("failed devctl mapinfos - %d (%s)\n", err, safe_strerror (err)); |
61bb466e KW |
561 | xfree (mapinfos); |
562 | return; | |
563 | } | |
564 | ||
325fac50 | 565 | num = std::min (num, num_mapinfos); |
61bb466e KW |
566 | |
567 | /* Run through the list of mapinfos, and store the data and text info | |
568 | so we can print it at the bottom of the loop. */ | |
569 | for (mapinfo_p = mapinfos, i = 0; i < num; i++, mapinfo_p++) | |
570 | { | |
571 | if (!(mapinfo_p->flags & flags)) | |
572 | mapinfo_p->ino = 0; | |
573 | ||
574 | if (mapinfo_p->ino == 0) /* Already visited. */ | |
575 | continue; | |
576 | ||
577 | map.info.vaddr = mapinfo_p->vaddr; | |
578 | ||
579 | err = devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
580 | if (err != EOK) | |
581 | continue; | |
582 | ||
583 | memset (&printme, 0, sizeof printme); | |
584 | printme.dev = mapinfo_p->dev; | |
585 | printme.ino = mapinfo_p->ino; | |
586 | printme.text.addr = mapinfo_p->vaddr; | |
587 | printme.text.size = mapinfo_p->size; | |
588 | printme.text.flags = mapinfo_p->flags; | |
589 | printme.text.offset = mapinfo_p->offset; | |
590 | printme.text.debug_vaddr = map.info.vaddr; | |
591 | strcpy (printme.name, map.info.path); | |
592 | ||
593 | /* Check for matching data. */ | |
594 | for (mapinfo_p2 = mapinfos, j = 0; j < num; j++, mapinfo_p2++) | |
595 | { | |
596 | if (mapinfo_p2->vaddr != mapinfo_p->vaddr | |
597 | && mapinfo_p2->ino == mapinfo_p->ino | |
598 | && mapinfo_p2->dev == mapinfo_p->dev) | |
599 | { | |
600 | map.info.vaddr = mapinfo_p2->vaddr; | |
601 | err = | |
602 | devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0); | |
603 | if (err != EOK) | |
604 | continue; | |
605 | ||
606 | if (strcmp (map.info.path, printme.name)) | |
607 | continue; | |
608 | ||
405feb71 | 609 | /* Lower debug_vaddr is always text, if necessary, swap. */ |
61bb466e KW |
610 | if ((int) map.info.vaddr < (int) printme.text.debug_vaddr) |
611 | { | |
612 | memcpy (&(printme.data), &(printme.text), | |
613 | sizeof (printme.data)); | |
614 | printme.text.addr = mapinfo_p2->vaddr; | |
615 | printme.text.size = mapinfo_p2->size; | |
616 | printme.text.flags = mapinfo_p2->flags; | |
617 | printme.text.offset = mapinfo_p2->offset; | |
618 | printme.text.debug_vaddr = map.info.vaddr; | |
619 | } | |
620 | else | |
621 | { | |
622 | printme.data.addr = mapinfo_p2->vaddr; | |
623 | printme.data.size = mapinfo_p2->size; | |
624 | printme.data.flags = mapinfo_p2->flags; | |
625 | printme.data.offset = mapinfo_p2->offset; | |
626 | printme.data.debug_vaddr = map.info.vaddr; | |
627 | } | |
628 | mapinfo_p2->ino = 0; | |
629 | } | |
630 | } | |
631 | mapinfo_p->ino = 0; | |
632 | ||
6cb06a8c TT |
633 | gdb_printf ("%s\n", printme.name); |
634 | gdb_printf ("\ttext=%08x bytes @ 0x%08x\n", printme.text.size, | |
635 | printme.text.addr); | |
636 | gdb_printf ("\t\tflags=%08x\n", printme.text.flags); | |
637 | gdb_printf ("\t\tdebug=%08x\n", printme.text.debug_vaddr); | |
638 | gdb_printf ("\t\toffset=%s\n", phex (printme.text.offset, 8)); | |
61bb466e KW |
639 | if (printme.data.size) |
640 | { | |
6cb06a8c TT |
641 | gdb_printf ("\tdata=%08x bytes @ 0x%08x\n", printme.data.size, |
642 | printme.data.addr); | |
643 | gdb_printf ("\t\tflags=%08x\n", printme.data.flags); | |
644 | gdb_printf ("\t\tdebug=%08x\n", printme.data.debug_vaddr); | |
645 | gdb_printf ("\t\toffset=%s\n", phex (printme.data.offset, 8)); | |
61bb466e | 646 | } |
6cb06a8c TT |
647 | gdb_printf ("\tdev=0x%x\n", printme.dev); |
648 | gdb_printf ("\tino=0x%x\n", (unsigned int) printme.ino); | |
61bb466e KW |
649 | } |
650 | xfree (mapinfos); | |
651 | return; | |
652 | } | |
653 | ||
654 | /* Print status information about what we're accessing. */ | |
f6ac5f3d PA |
655 | void |
656 | nto_procfs_target::files_info () | |
61bb466e | 657 | { |
181e7f93 PA |
658 | struct inferior *inf = current_inferior (); |
659 | ||
6cb06a8c TT |
660 | gdb_printf ("\tUsing the running image of %s %s via %s.\n", |
661 | inf->attach_flag ? "attached" : "child", | |
fb6d30e0 | 662 | target_pid_to_str (ptid_t (inf->pid)).c_str (), |
6cb06a8c | 663 | (nodestr != NULL) ? nodestr : "local node"); |
61bb466e KW |
664 | } |
665 | ||
e5343fde AR |
666 | /* Target to_pid_to_exec_file implementation. */ |
667 | ||
0e90c441 | 668 | const char * |
f6ac5f3d | 669 | nto_procfs_target::pid_to_exec_file (const int pid) |
e5343fde AR |
670 | { |
671 | int proc_fd; | |
672 | static char proc_path[PATH_MAX]; | |
673 | ssize_t rd; | |
674 | ||
675 | /* Read exe file name. */ | |
676 | snprintf (proc_path, sizeof (proc_path), "%s/proc/%d/exefile", | |
677 | (nodestr != NULL) ? nodestr : "", pid); | |
678 | proc_fd = open (proc_path, O_RDONLY); | |
679 | if (proc_fd == -1) | |
680 | return NULL; | |
681 | ||
682 | rd = read (proc_fd, proc_path, sizeof (proc_path) - 1); | |
683 | close (proc_fd); | |
684 | if (rd <= 0) | |
685 | { | |
686 | proc_path[0] = '\0'; | |
687 | return NULL; | |
688 | } | |
689 | proc_path[rd] = '\0'; | |
690 | return proc_path; | |
691 | } | |
692 | ||
61bb466e | 693 | /* Attach to process PID, then initialize for debugging it. */ |
f6ac5f3d PA |
694 | void |
695 | nto_procfs_target::attach (const char *args, int from_tty) | |
61bb466e | 696 | { |
61bb466e | 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 | 704 | |
bc521517 | 705 | target_announce_attach (from_tty, pid); |
61bb466e | 706 | |
ebe84f23 | 707 | ptid_t ptid = do_attach (ptid_t (pid)); |
6c95b8df PA |
708 | inf = current_inferior (); |
709 | inferior_appeared (inf, pid); | |
30220b46 | 710 | inf->attach_flag = true; |
7f9f62ba | 711 | |
c8fbd44a | 712 | if (!inf->target_is_pushed (ops)) |
02980c56 | 713 | inf->push_target (ops); |
7f9f62ba | 714 | |
ebe84f23 PA |
715 | update_thread_list (); |
716 | ||
9213a6d7 | 717 | switch_to_thread (this->find_thread (ptid)); |
61bb466e KW |
718 | } |
719 | ||
f6ac5f3d PA |
720 | void |
721 | nto_procfs_target::post_attach (pid_t pid) | |
61bb466e | 722 | { |
7e10abd1 | 723 | if (current_program_space->exec_bfd ()) |
268a4a75 | 724 | solib_create_inferior_hook (0); |
61bb466e KW |
725 | } |
726 | ||
727 | static ptid_t | |
728 | do_attach (ptid_t ptid) | |
729 | { | |
730 | procfs_status status; | |
731 | struct sigevent event; | |
dc5dd1eb | 732 | char path[PATH_MAX]; |
61bb466e | 733 | |
609c3040 | 734 | snprintf (path, PATH_MAX - 1, "%s%s/%d/as", |
e99b03dc | 735 | (nodestr != NULL) ? nodestr : "", "/proc", ptid.pid ()); |
61bb466e KW |
736 | ctl_fd = open (path, O_RDWR); |
737 | if (ctl_fd == -1) | |
8a3fe4f8 | 738 | error (_("Couldn't open proc file %s, error %d (%s)"), path, errno, |
dc5dd1eb | 739 | safe_strerror (errno)); |
61bb466e | 740 | if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK) |
8a3fe4f8 | 741 | error (_("Couldn't stop process")); |
61bb466e KW |
742 | |
743 | /* Define a sigevent for process stopped notification. */ | |
744 | event.sigev_notify = SIGEV_SIGNAL_THREAD; | |
745 | event.sigev_signo = SIGUSR1; | |
746 | event.sigev_code = 0; | |
747 | event.sigev_value.sival_ptr = NULL; | |
748 | event.sigev_priority = -1; | |
749 | devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0); | |
750 | ||
751 | if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK | |
752 | && status.flags & _DEBUG_FLAG_STOPPED) | |
e99b03dc | 753 | SignalKill (nto_node (), ptid.pid (), 0, SIGCONT, 0, 0); |
61bb466e | 754 | nto_init_solib_absolute_prefix (); |
e99b03dc | 755 | return ptid_t (ptid.pid (), 0, status.tid); |
61bb466e KW |
756 | } |
757 | ||
758 | /* Ask the user what to do when an interrupt is received. */ | |
759 | static void | |
dc5dd1eb | 760 | interrupt_query (void) |
61bb466e | 761 | { |
9e2f0ad4 HZ |
762 | if (query (_("Interrupted while waiting for the program.\n\ |
763 | Give up (and stop debugging it)? "))) | |
61bb466e | 764 | { |
bc1e6c81 | 765 | target_mourn_inferior (inferior_ptid); |
039e3c22 | 766 | quit (); |
61bb466e | 767 | } |
61bb466e KW |
768 | } |
769 | ||
770 | /* The user typed ^C twice. */ | |
771 | static void | |
bfedc46a | 772 | nto_handle_sigint_twice (int signo) |
61bb466e KW |
773 | { |
774 | signal (signo, ofunc); | |
775 | interrupt_query (); | |
bfedc46a | 776 | signal (signo, nto_handle_sigint_twice); |
61bb466e KW |
777 | } |
778 | ||
779 | static void | |
bfedc46a | 780 | nto_handle_sigint (int signo) |
61bb466e KW |
781 | { |
782 | /* If this doesn't work, try more severe steps. */ | |
bfedc46a | 783 | signal (signo, nto_handle_sigint_twice); |
61bb466e | 784 | |
e671cd59 | 785 | target_interrupt (); |
61bb466e KW |
786 | } |
787 | ||
f6ac5f3d PA |
788 | sptid_t |
789 | nto_procfs_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus, | |
b60cea74 | 790 | target_wait_flags options) |
61bb466e KW |
791 | { |
792 | sigset_t set; | |
793 | siginfo_t info; | |
794 | procfs_status status; | |
795 | static int exit_signo = 0; /* To track signals that cause termination. */ | |
796 | ||
183be222 | 797 | ourstatus->set_spurious (); |
61bb466e | 798 | |
d7e15655 | 799 | if (inferior_ptid == null_ptid) |
61bb466e | 800 | { |
183be222 | 801 | ourstatus->set_stopped (GDB_SIGNAL_0); |
61bb466e KW |
802 | exit_signo = 0; |
803 | return null_ptid; | |
804 | } | |
805 | ||
806 | sigemptyset (&set); | |
807 | sigaddset (&set, SIGUSR1); | |
808 | ||
809 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
810 | while (!(status.flags & _DEBUG_FLAG_ISTOP)) | |
811 | { | |
a40805d4 | 812 | ofunc = signal (SIGINT, nto_handle_sigint); |
61bb466e KW |
813 | sigwaitinfo (&set, &info); |
814 | signal (SIGINT, ofunc); | |
815 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
816 | } | |
817 | ||
a9889169 AR |
818 | nto_inferior_data (NULL)->stopped_flags = status.flags; |
819 | nto_inferior_data (NULL)->stopped_pc = status.ip; | |
820 | ||
61bb466e | 821 | if (status.flags & _DEBUG_FLAG_SSTEP) |
183be222 | 822 | ourstatus->set_stopped (GDB_SIGNAL_TRAP); |
61bb466e KW |
823 | /* Was it a breakpoint? */ |
824 | else if (status.flags & _DEBUG_FLAG_TRACE) | |
183be222 | 825 | ourstatus->set_stopped (GDB_SIGNAL_TRAP); |
61bb466e KW |
826 | else if (status.flags & _DEBUG_FLAG_ISTOP) |
827 | { | |
828 | switch (status.why) | |
829 | { | |
830 | case _DEBUG_WHY_SIGNALLED: | |
183be222 | 831 | ourstatus->set_stopped (gdb_signal_from_host (status.info.si_signo)); |
61bb466e KW |
832 | exit_signo = 0; |
833 | break; | |
834 | case _DEBUG_WHY_FAULTED: | |
61bb466e KW |
835 | if (status.info.si_signo == SIGTRAP) |
836 | { | |
183be222 | 837 | ourstatus->set_stopped (0); |
61bb466e KW |
838 | exit_signo = 0; |
839 | } | |
840 | else | |
841 | { | |
183be222 SM |
842 | ourstatus->set_stopped |
843 | (gdb_signal_from_host (status.info.si_signo)); | |
844 | exit_signo = ourstatus->sig (); | |
61bb466e KW |
845 | } |
846 | break; | |
847 | ||
848 | case _DEBUG_WHY_TERMINATED: | |
849 | { | |
850 | int waitval = 0; | |
851 | ||
e99b03dc | 852 | waitpid (inferior_ptid.pid (), &waitval, WNOHANG); |
61bb466e KW |
853 | if (exit_signo) |
854 | { | |
855 | /* Abnormal death. */ | |
183be222 | 856 | ourstatus->set_signalled (exit_signo); |
61bb466e KW |
857 | } |
858 | else | |
859 | { | |
860 | /* Normal death. */ | |
183be222 | 861 | ourstatus->set_exited (WEXITSTATUS (waitval)); |
61bb466e KW |
862 | } |
863 | exit_signo = 0; | |
864 | break; | |
865 | } | |
866 | ||
867 | case _DEBUG_WHY_REQUESTED: | |
868 | /* We are assuming a requested stop is due to a SIGINT. */ | |
183be222 | 869 | ourstatus->set_stopped (GDB_SIGNAL_INT); |
61bb466e KW |
870 | exit_signo = 0; |
871 | break; | |
872 | } | |
873 | } | |
874 | ||
fd79271b | 875 | return ptid_t (status.pid, 0, status.tid); |
61bb466e KW |
876 | } |
877 | ||
878 | /* Read the current values of the inferior's registers, both the | |
879 | general register set and floating point registers (if supported) | |
880 | and update gdb's idea of their current values. */ | |
f6ac5f3d PA |
881 | void |
882 | nto_procfs_target::fetch_registers (struct regcache *regcache, int regno) | |
61bb466e KW |
883 | { |
884 | union | |
885 | { | |
886 | procfs_greg greg; | |
887 | procfs_fpreg fpreg; | |
888 | procfs_altreg altreg; | |
889 | } | |
890 | reg; | |
891 | int regsize; | |
892 | ||
222312d3 | 893 | procfs_set_thread (regcache->ptid ()); |
61bb466e | 894 | if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK) |
56be3814 | 895 | nto_supply_gregset (regcache, (char *) ®.greg); |
61bb466e KW |
896 | if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size) |
897 | == EOK) | |
56be3814 | 898 | nto_supply_fpregset (regcache, (char *) ®.fpreg); |
61bb466e KW |
899 | if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size) |
900 | == EOK) | |
56be3814 | 901 | nto_supply_altregset (regcache, (char *) ®.altreg); |
61bb466e KW |
902 | } |
903 | ||
9d46c4e5 PA |
904 | /* Helper for procfs_xfer_partial that handles memory transfers. |
905 | Arguments are like target_xfer_partial. */ | |
61bb466e | 906 | |
9d46c4e5 PA |
907 | static enum target_xfer_status |
908 | procfs_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, | |
909 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
61bb466e | 910 | { |
9d46c4e5 PA |
911 | int nbytes; |
912 | ||
913 | if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) != (off_t) memaddr) | |
914 | return TARGET_XFER_E_IO; | |
915 | ||
916 | if (writebuf != NULL) | |
917 | nbytes = write (ctl_fd, writebuf, len); | |
918 | else | |
919 | nbytes = read (ctl_fd, readbuf, len); | |
920 | if (nbytes <= 0) | |
921 | return TARGET_XFER_E_IO; | |
922 | *xfered_len = nbytes; | |
923 | return TARGET_XFER_OK; | |
924 | } | |
925 | ||
926 | /* Target to_xfer_partial implementation. */ | |
61bb466e | 927 | |
f6ac5f3d PA |
928 | enum target_xfer_status |
929 | nto_procfs_target::xfer_partial (enum target_object object, | |
930 | const char *annex, gdb_byte *readbuf, | |
931 | const gdb_byte *writebuf, ULONGEST offset, | |
932 | ULONGEST len, ULONGEST *xfered_len) | |
9d46c4e5 PA |
933 | { |
934 | switch (object) | |
61bb466e | 935 | { |
9d46c4e5 PA |
936 | case TARGET_OBJECT_MEMORY: |
937 | return procfs_xfer_memory (readbuf, writebuf, offset, len, xfered_len); | |
8a6c0ccd AR |
938 | case TARGET_OBJECT_AUXV: |
939 | if (readbuf != NULL) | |
940 | { | |
941 | int err; | |
942 | CORE_ADDR initial_stack; | |
943 | debug_process_t procinfo; | |
944 | /* For 32-bit architecture, size of auxv_t is 8 bytes. */ | |
945 | const unsigned int sizeof_auxv_t = sizeof (auxv_t); | |
946 | const unsigned int sizeof_tempbuf = 20 * sizeof_auxv_t; | |
947 | int tempread; | |
948 | gdb_byte *const tempbuf = alloca (sizeof_tempbuf); | |
949 | ||
950 | if (tempbuf == NULL) | |
951 | return TARGET_XFER_E_IO; | |
952 | ||
953 | err = devctl (ctl_fd, DCMD_PROC_INFO, &procinfo, | |
dda83cd7 | 954 | sizeof procinfo, 0); |
8a6c0ccd AR |
955 | if (err != EOK) |
956 | return TARGET_XFER_E_IO; | |
957 | ||
958 | initial_stack = procinfo.initial_stack; | |
959 | ||
960 | /* procfs is always 'self-hosted', no byte-order manipulation. */ | |
961 | tempread = nto_read_auxv_from_initial_stack (initial_stack, tempbuf, | |
962 | sizeof_tempbuf, | |
963 | sizeof (auxv_t)); | |
325fac50 | 964 | tempread = std::min (tempread, len) - offset; |
8a6c0ccd AR |
965 | memcpy (readbuf, tempbuf + offset, tempread); |
966 | *xfered_len = tempread; | |
967 | return tempread ? TARGET_XFER_OK : TARGET_XFER_EOF; | |
968 | } | |
969 | /* Fallthru */ | |
9d46c4e5 | 970 | default: |
4360561f TT |
971 | return this->beneath ()->xfer_partial (object, annex, |
972 | readbuf, writebuf, offset, len, | |
973 | xfered_len); | |
61bb466e | 974 | } |
61bb466e KW |
975 | } |
976 | ||
977 | /* Take a program previously attached to and detaches it. | |
978 | The program resumes execution and will no longer stop | |
979 | on signals, etc. We'd better not have left any breakpoints | |
980 | in the program or it'll die when it hits one. */ | |
f6ac5f3d PA |
981 | void |
982 | nto_procfs_target::detach (inferior *inf, int from_tty) | |
61bb466e | 983 | { |
0f48b757 PA |
984 | target_announce_detach (); |
985 | ||
61bb466e | 986 | if (siggnal) |
ebe84f23 | 987 | SignalKill (nto_node (), inf->pid, 0, 0, 0, 0); |
61bb466e KW |
988 | |
989 | close (ctl_fd); | |
990 | ctl_fd = -1; | |
7f9f62ba | 991 | |
ebe84f23 PA |
992 | switch_to_no_thread (); |
993 | detach_inferior (inf->pid); | |
7f9f62ba | 994 | init_thread_list (); |
6a3cb8e8 | 995 | inf_child_maybe_unpush_target (ops); |
61bb466e KW |
996 | } |
997 | ||
998 | static int | |
999 | procfs_breakpoint (CORE_ADDR addr, int type, int size) | |
1000 | { | |
1001 | procfs_break brk; | |
1002 | ||
1003 | brk.type = type; | |
1004 | brk.addr = addr; | |
1005 | brk.size = size; | |
1006 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1007 | if (errno != EOK) | |
1008 | return 1; | |
1009 | return 0; | |
1010 | } | |
1011 | ||
f6ac5f3d PA |
1012 | int |
1013 | nto_procfs_target::insert_breakpoint (struct gdbarch *gdbarch, | |
1014 | struct bp_target_info *bp_tgt) | |
61bb466e | 1015 | { |
0d5ed153 | 1016 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f | 1017 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, 0); |
61bb466e KW |
1018 | } |
1019 | ||
f6ac5f3d PA |
1020 | int |
1021 | nto_procfs_target::remove_breakpoint (struct gdbarch *gdbarch, | |
1022 | struct bp_target_info *bp_tgt, | |
1023 | enum remove_bp_reason reason) | |
61bb466e | 1024 | { |
8181d85f | 1025 | return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, -1); |
61bb466e KW |
1026 | } |
1027 | ||
f6ac5f3d PA |
1028 | int |
1029 | nto_procfs_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
1030 | struct bp_target_info *bp_tgt) | |
61bb466e | 1031 | { |
0d5ed153 | 1032 | bp_tgt->placed_address = bp_tgt->reqstd_address; |
8181d85f DJ |
1033 | return procfs_breakpoint (bp_tgt->placed_address, |
1034 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0); | |
61bb466e KW |
1035 | } |
1036 | ||
f6ac5f3d PA |
1037 | int |
1038 | nto_procfs_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
1039 | struct bp_target_info *bp_tgt) | |
61bb466e | 1040 | { |
8181d85f DJ |
1041 | return procfs_breakpoint (bp_tgt->placed_address, |
1042 | _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1); | |
61bb466e KW |
1043 | } |
1044 | ||
f6ac5f3d PA |
1045 | void |
1046 | nto_procfs_target::resume (ptid_t ptid, int step, enum gdb_signal signo) | |
61bb466e KW |
1047 | { |
1048 | int signal_to_pass; | |
1049 | procfs_status status; | |
14ef7606 | 1050 | sigset_t *run_fault = (sigset_t *) (void *) &run.fault; |
61bb466e | 1051 | |
d7e15655 | 1052 | if (inferior_ptid == null_ptid) |
61bb466e KW |
1053 | return; |
1054 | ||
d7e15655 | 1055 | procfs_set_thread (ptid == minus_one_ptid ? inferior_ptid : |
61bb466e KW |
1056 | ptid); |
1057 | ||
1058 | run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE; | |
1059 | if (step) | |
1060 | run.flags |= _DEBUG_RUN_STEP; | |
1061 | ||
14ef7606 AR |
1062 | sigemptyset (run_fault); |
1063 | sigaddset (run_fault, FLTBPT); | |
1064 | sigaddset (run_fault, FLTTRACE); | |
1065 | sigaddset (run_fault, FLTILL); | |
1066 | sigaddset (run_fault, FLTPRIV); | |
1067 | sigaddset (run_fault, FLTBOUNDS); | |
1068 | sigaddset (run_fault, FLTIOVF); | |
1069 | sigaddset (run_fault, FLTIZDIV); | |
1070 | sigaddset (run_fault, FLTFPE); | |
61bb466e | 1071 | /* Peter V will be changing this at some point. */ |
14ef7606 | 1072 | sigaddset (run_fault, FLTPAGE); |
61bb466e KW |
1073 | |
1074 | run.flags |= _DEBUG_RUN_ARM; | |
1075 | ||
2ea28649 | 1076 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
1077 | |
1078 | if (signal_to_pass) | |
1079 | { | |
1080 | devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0); | |
2ea28649 | 1081 | signal_to_pass = gdb_signal_to_host (signo); |
61bb466e KW |
1082 | if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED)) |
1083 | { | |
1084 | if (signal_to_pass != status.info.si_signo) | |
1085 | { | |
e99b03dc | 1086 | SignalKill (nto_node (), inferior_ptid.pid (), 0, |
d737fd7f | 1087 | signal_to_pass, 0, 0); |
61bb466e KW |
1088 | run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG; |
1089 | } | |
0df8b418 | 1090 | else /* Let it kill the program without telling us. */ |
61bb466e KW |
1091 | sigdelset (&run.trace, signal_to_pass); |
1092 | } | |
1093 | } | |
1094 | else | |
1095 | run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT; | |
1096 | ||
1097 | errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0); | |
1098 | if (errno != EOK) | |
1099 | { | |
9b20d036 | 1100 | perror (_("run error!\n")); |
61bb466e KW |
1101 | return; |
1102 | } | |
1103 | } | |
1104 | ||
f6ac5f3d PA |
1105 | void |
1106 | nto_procfs_target::mourn_inferior () | |
61bb466e | 1107 | { |
d7e15655 | 1108 | if (inferior_ptid != null_ptid) |
61bb466e | 1109 | { |
e99b03dc | 1110 | SignalKill (nto_node (), inferior_ptid.pid (), 0, SIGKILL, 0, 0); |
61bb466e KW |
1111 | close (ctl_fd); |
1112 | } | |
ebe84f23 | 1113 | switch_to_no_thread (); |
61bb466e | 1114 | init_thread_list (); |
c1ee2fb3 | 1115 | inf_child_mourn_inferior (ops); |
61bb466e KW |
1116 | } |
1117 | ||
1118 | /* This function breaks up an argument string into an argument | |
1119 | vector suitable for passing to execvp(). | |
1120 | E.g., on "run a b c d" this routine would get as input | |
1121 | the string "a b c d", and as output it would fill in argv with | |
1122 | the four arguments "a", "b", "c", "d". The only additional | |
1123 | functionality is simple quoting. The gdb command: | |
24b21115 | 1124 | run a "b c d" f |
61bb466e KW |
1125 | will fill in argv with the three args "a", "b c d", "e". */ |
1126 | static void | |
1127 | breakup_args (char *scratch, char **argv) | |
1128 | { | |
1129 | char *pp, *cp = scratch; | |
1130 | char quoting = 0; | |
1131 | ||
1132 | for (;;) | |
1133 | { | |
1134 | /* Scan past leading separators. */ | |
1135 | quoting = 0; | |
1136 | while (*cp == ' ' || *cp == '\t' || *cp == '\n') | |
1137 | cp++; | |
1138 | ||
1139 | /* Break if at end of string. */ | |
1140 | if (*cp == '\0') | |
1141 | break; | |
1142 | ||
1143 | /* Take an arg. */ | |
1144 | if (*cp == '"') | |
1145 | { | |
1146 | cp++; | |
1147 | quoting = strchr (cp, '"') ? 1 : 0; | |
1148 | } | |
1149 | ||
1150 | *argv++ = cp; | |
1151 | ||
1152 | /* Scan for next arg separator. */ | |
1153 | pp = cp; | |
1154 | if (quoting) | |
1155 | cp = strchr (pp, '"'); | |
1156 | if ((cp == NULL) || (!quoting)) | |
1157 | cp = strchr (pp, ' '); | |
1158 | if (cp == NULL) | |
1159 | cp = strchr (pp, '\t'); | |
1160 | if (cp == NULL) | |
1161 | cp = strchr (pp, '\n'); | |
1162 | ||
1163 | /* No separators => end of string => break. */ | |
1164 | if (cp == NULL) | |
1165 | { | |
1166 | pp = cp; | |
1167 | break; | |
1168 | } | |
1169 | ||
1170 | /* Replace the separator with a terminator. */ | |
1171 | *cp++ = '\0'; | |
1172 | } | |
1173 | ||
1174 | /* Execv requires a null-terminated arg vector. */ | |
1175 | *argv = NULL; | |
1176 | } | |
1177 | ||
f6ac5f3d PA |
1178 | void |
1179 | nto_procfs_target::create_inferior (const char *exec_file, | |
1180 | const std::string &allargs, | |
1181 | char **env, int from_tty) | |
61bb466e KW |
1182 | { |
1183 | struct inheritance inherit; | |
1184 | pid_t pid; | |
1185 | int flags, errn; | |
1186 | char **argv, *args; | |
3cb3b8df | 1187 | const char *in = "", *out = "", *err = ""; |
61bb466e KW |
1188 | int fd, fds[3]; |
1189 | sigset_t set; | |
3fdfcbf1 | 1190 | struct inferior *inf; |
61bb466e | 1191 | |
7c5ded6a | 1192 | argv = xmalloc ((allargs.size () / (unsigned) 2 + 2) * |
61bb466e | 1193 | sizeof (*argv)); |
d9fa87f4 | 1194 | argv[0] = const_cast<char *> (get_exec_file (1)); |
61bb466e KW |
1195 | if (!argv[0]) |
1196 | { | |
1197 | if (exec_file) | |
1198 | argv[0] = exec_file; | |
1199 | else | |
1200 | return; | |
1201 | } | |
1202 | ||
7c5ded6a | 1203 | args = xstrdup (allargs.c_str ()); |
609c3040 | 1204 | breakup_args (args, (exec_file != NULL) ? &argv[1] : &argv[0]); |
61bb466e KW |
1205 | |
1206 | argv = nto_parse_redirection (argv, &in, &out, &err); | |
1207 | ||
1208 | fds[0] = STDIN_FILENO; | |
1209 | fds[1] = STDOUT_FILENO; | |
1210 | fds[2] = STDERR_FILENO; | |
1211 | ||
1212 | /* If the user specified I/O via gdb's --tty= arg, use it, but only | |
1213 | if the i/o is not also being specified via redirection. */ | |
05779d57 PA |
1214 | const char *inferior_tty = current_inferior ()->tty (); |
1215 | if (inferior_tty != nullptr) | |
61bb466e KW |
1216 | { |
1217 | if (!in[0]) | |
05779d57 | 1218 | in = inferior_tty; |
61bb466e | 1219 | if (!out[0]) |
05779d57 | 1220 | out = inferior_tty; |
61bb466e | 1221 | if (!err[0]) |
05779d57 | 1222 | err = inferior_tty; |
61bb466e KW |
1223 | } |
1224 | ||
1225 | if (in[0]) | |
1226 | { | |
1227 | fd = open (in, O_RDONLY); | |
1228 | if (fd == -1) | |
1229 | perror (in); | |
1230 | else | |
1231 | fds[0] = fd; | |
1232 | } | |
1233 | if (out[0]) | |
1234 | { | |
1235 | fd = open (out, O_WRONLY); | |
1236 | if (fd == -1) | |
1237 | perror (out); | |
1238 | else | |
1239 | fds[1] = fd; | |
1240 | } | |
1241 | if (err[0]) | |
1242 | { | |
1243 | fd = open (err, O_WRONLY); | |
1244 | if (fd == -1) | |
1245 | perror (err); | |
1246 | else | |
1247 | fds[2] = fd; | |
1248 | } | |
1249 | ||
1250 | /* Clear any pending SIGUSR1's but keep the behavior the same. */ | |
1251 | signal (SIGUSR1, signal (SIGUSR1, SIG_IGN)); | |
1252 | ||
1253 | sigemptyset (&set); | |
1254 | sigaddset (&set, SIGUSR1); | |
1255 | sigprocmask (SIG_UNBLOCK, &set, NULL); | |
1256 | ||
1257 | memset (&inherit, 0, sizeof (inherit)); | |
1258 | ||
1259 | if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0) | |
1260 | { | |
d737fd7f | 1261 | inherit.nd = nto_node (); |
61bb466e KW |
1262 | inherit.flags |= SPAWN_SETND; |
1263 | inherit.flags &= ~SPAWN_EXEC; | |
1264 | } | |
1265 | inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD; | |
1266 | inherit.pgroup = SPAWN_NEWPGROUP; | |
1267 | pid = spawnp (argv[0], 3, fds, &inherit, argv, | |
1268 | ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0); | |
1269 | xfree (args); | |
1270 | ||
1271 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1272 | ||
1273 | if (pid == -1) | |
8a3fe4f8 | 1274 | error (_("Error spawning %s: %d (%s)"), argv[0], errno, |
d737fd7f | 1275 | safe_strerror (errno)); |
61bb466e KW |
1276 | |
1277 | if (fds[0] != STDIN_FILENO) | |
1278 | close (fds[0]); | |
1279 | if (fds[1] != STDOUT_FILENO) | |
1280 | close (fds[1]); | |
1281 | if (fds[2] != STDERR_FILENO) | |
1282 | close (fds[2]); | |
1283 | ||
ebe84f23 PA |
1284 | ptid_t ptid = do_attach (ptid_t (pid)); |
1285 | update_thread_list (); | |
9213a6d7 | 1286 | switch_to_thread (this->find_thread (ptid)); |
61bb466e | 1287 | |
6c95b8df PA |
1288 | inf = current_inferior (); |
1289 | inferior_appeared (inf, pid); | |
30220b46 | 1290 | inf->attach_flag = false; |
7f9f62ba | 1291 | |
61bb466e KW |
1292 | flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */ |
1293 | errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0); | |
1294 | if (errn != EOK) | |
1295 | { | |
1296 | /* FIXME: expected warning? */ | |
1297 | /* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n", | |
dda83cd7 | 1298 | errn, safe_strerror(errn) ); */ |
61bb466e | 1299 | } |
c8fbd44a | 1300 | if (!inf->target_is_pushed (ops)) |
02980c56 | 1301 | inf->push_target (ops); |
223ffa71 | 1302 | target_terminal::init (); |
61bb466e | 1303 | |
7e10abd1 | 1304 | if (current_program_space->exec_bfd () != NULL |
a42d7dd8 TT |
1305 | || (current_program_space->symfile_object_file != NULL |
1306 | && current_program_space->symfile_object_file->obfd != NULL)) | |
268a4a75 | 1307 | solib_create_inferior_hook (0); |
61bb466e KW |
1308 | } |
1309 | ||
f6ac5f3d PA |
1310 | void |
1311 | nto_procfs_target::interrupt () | |
61bb466e KW |
1312 | { |
1313 | devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0); | |
1314 | } | |
1315 | ||
f6ac5f3d PA |
1316 | void |
1317 | nto_procfs_target::kill () | |
61bb466e | 1318 | { |
bc1e6c81 | 1319 | target_mourn_inferior (inferior_ptid); |
61bb466e KW |
1320 | } |
1321 | ||
61bb466e KW |
1322 | /* Fill buf with regset and return devctl cmd to do the setting. Return |
1323 | -1 if we fail to get the regset. Store size of regset in regsize. */ | |
1324 | static int | |
1325 | get_regset (int regset, char *buf, int bufsize, int *regsize) | |
1326 | { | |
1327 | int dev_get, dev_set; | |
1328 | switch (regset) | |
1329 | { | |
1330 | case NTO_REG_GENERAL: | |
1331 | dev_get = DCMD_PROC_GETGREG; | |
1332 | dev_set = DCMD_PROC_SETGREG; | |
1333 | break; | |
1334 | ||
1335 | case NTO_REG_FLOAT: | |
1336 | dev_get = DCMD_PROC_GETFPREG; | |
1337 | dev_set = DCMD_PROC_SETFPREG; | |
1338 | break; | |
1339 | ||
1340 | case NTO_REG_ALT: | |
1341 | dev_get = DCMD_PROC_GETALTREG; | |
1342 | dev_set = DCMD_PROC_SETALTREG; | |
1343 | break; | |
1344 | ||
1345 | case NTO_REG_SYSTEM: | |
1346 | default: | |
1347 | return -1; | |
1348 | } | |
97c44116 | 1349 | if (devctl (ctl_fd, dev_get, buf, bufsize, regsize) != EOK) |
61bb466e KW |
1350 | return -1; |
1351 | ||
1352 | return dev_set; | |
1353 | } | |
1354 | ||
f6ac5f3d PA |
1355 | void |
1356 | nto_procfs_target::store_registers (struct regcache *regcache, int regno) | |
61bb466e KW |
1357 | { |
1358 | union | |
1359 | { | |
1360 | procfs_greg greg; | |
1361 | procfs_fpreg fpreg; | |
1362 | procfs_altreg altreg; | |
1363 | } | |
1364 | reg; | |
1365 | unsigned off; | |
1366 | int len, regset, regsize, dev_set, err; | |
1367 | char *data; | |
222312d3 | 1368 | ptid_t ptid = regcache->ptid (); |
61bb466e | 1369 | |
d7e15655 | 1370 | if (ptid == null_ptid) |
61bb466e | 1371 | return; |
bcc0c096 | 1372 | procfs_set_thread (ptid); |
61bb466e KW |
1373 | |
1374 | if (regno == -1) | |
1375 | { | |
1376 | for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++) | |
1377 | { | |
1378 | dev_set = get_regset (regset, (char *) ®, | |
1379 | sizeof (reg), ®size); | |
1380 | if (dev_set == -1) | |
1381 | continue; | |
1382 | ||
56be3814 | 1383 | if (nto_regset_fill (regcache, regset, (char *) ®) == -1) |
61bb466e KW |
1384 | continue; |
1385 | ||
1386 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1387 | if (err != EOK) | |
6cb06a8c TT |
1388 | gdb_printf (gdb_stderr, |
1389 | "Warning unable to write regset %d: %s\n", | |
1390 | regno, safe_strerror (err)); | |
61bb466e KW |
1391 | } |
1392 | } | |
1393 | else | |
1394 | { | |
1395 | regset = nto_regset_id (regno); | |
1396 | if (regset == -1) | |
1397 | return; | |
1398 | ||
1399 | dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size); | |
1400 | if (dev_set == -1) | |
1401 | return; | |
1402 | ||
ac7936df | 1403 | len = nto_register_area (regcache->arch (), |
60441ab9 | 1404 | regno, regset, &off); |
61bb466e KW |
1405 | |
1406 | if (len < 1) | |
1407 | return; | |
1408 | ||
34a79281 | 1409 | regcache->raw_collect (regno, (char *) ® + off); |
61bb466e KW |
1410 | |
1411 | err = devctl (ctl_fd, dev_set, ®, regsize, 0); | |
1412 | if (err != EOK) | |
6cb06a8c TT |
1413 | gdb_printf (gdb_stderr, |
1414 | "Warning unable to write regset %d: %s\n", regno, | |
1415 | safe_strerror (err)); | |
61bb466e KW |
1416 | } |
1417 | } | |
1418 | ||
2455069d UW |
1419 | /* Set list of signals to be handled in the target. */ |
1420 | ||
f6ac5f3d | 1421 | void |
adc6a863 PA |
1422 | nto_procfs_target::pass_signals |
1423 | (gdb::array_view<const unsigned char> pass_signals) | |
61bb466e KW |
1424 | { |
1425 | int signo; | |
1426 | ||
2455069d UW |
1427 | sigfillset (&run.trace); |
1428 | ||
61bb466e KW |
1429 | for (signo = 1; signo < NSIG; signo++) |
1430 | { | |
2ea28649 | 1431 | int target_signo = gdb_signal_from_host (signo); |
adc6a863 | 1432 | if (target_signo < pass_signals.size () && pass_signals[target_signo]) |
dda83cd7 | 1433 | sigdelset (&run.trace, signo); |
61bb466e KW |
1434 | } |
1435 | } | |
1436 | ||
a068643d | 1437 | std::string |
f6ac5f3d | 1438 | nto_procfs_target::pid_to_str (ptid_t ptid) |
61bb466e | 1439 | { |
a068643d | 1440 | int pid, tid; |
61bb466e KW |
1441 | struct tidinfo *tip; |
1442 | ||
e99b03dc | 1443 | pid = ptid.pid (); |
cc6bcb54 | 1444 | tid = ptid.tid (); |
61bb466e | 1445 | |
61bb466e KW |
1446 | #if 0 /* NYI */ |
1447 | tip = procfs_thread_info (pid, tid); | |
1448 | if (tip != NULL) | |
dc5dd1eb | 1449 | snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state); |
61bb466e KW |
1450 | #endif |
1451 | ||
a068643d | 1452 | return string_printf ("process %d", pid); |
61bb466e KW |
1453 | } |
1454 | ||
132f8e03 PA |
1455 | /* to_can_run implementation for "target procfs". Note this really |
1456 | means "can this target be the default run target", which there can | |
1457 | be only one, and we make it be "target native" like other ports. | |
1458 | "target procfs <node>" wouldn't make sense as default run target, as | |
1459 | it needs <node>. */ | |
ee8e9165 | 1460 | |
f6ac5f3d PA |
1461 | int |
1462 | nto_procfs_target::can_run () | |
132f8e03 PA |
1463 | { |
1464 | return 0; | |
1465 | } | |
1466 | ||
1467 | /* "target procfs". */ | |
f6ac5f3d | 1468 | static nto_procfs_target_procfs nto_procfs_ops; |
132f8e03 | 1469 | |
6a3cb8e8 | 1470 | /* "target native". */ |
f6ac5f3d | 1471 | static nto_procfs_target_native nto_native_ops; |
6a3cb8e8 | 1472 | |
132f8e03 PA |
1473 | /* Create the "native" and "procfs" targets. */ |
1474 | ||
1475 | static void | |
1476 | init_procfs_targets (void) | |
61bb466e | 1477 | { |
132f8e03 | 1478 | /* Register "target native". This is the default run target. */ |
d9f719f1 PA |
1479 | add_target (nto_native_target_info, inf_child_open_target); |
1480 | set_native_target (&nto_native_ops); | |
132f8e03 PA |
1481 | |
1482 | /* Register "target procfs <node>". */ | |
d9f719f1 | 1483 | add_target (nto_procfs_target_info, inf_child_open_target); |
61bb466e KW |
1484 | } |
1485 | ||
1486 | #define OSTYPE_NTO 1 | |
1487 | ||
6c265988 | 1488 | void _initialize_procfs (); |
61bb466e | 1489 | void |
6c265988 | 1490 | _initialize_procfs () |
61bb466e KW |
1491 | { |
1492 | sigset_t set; | |
1493 | ||
132f8e03 | 1494 | init_procfs_targets (); |
61bb466e KW |
1495 | |
1496 | /* We use SIGUSR1 to gain control after we block waiting for a process. | |
1497 | We use sigwaitevent to wait. */ | |
1498 | sigemptyset (&set); | |
1499 | sigaddset (&set, SIGUSR1); | |
1500 | sigprocmask (SIG_BLOCK, &set, NULL); | |
1501 | ||
2455069d UW |
1502 | /* Initially, make sure all signals are reported. */ |
1503 | sigfillset (&run.trace); | |
61bb466e KW |
1504 | |
1505 | /* Stuff some information. */ | |
1506 | nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags; | |
1507 | nto_cpuinfo_valid = 1; | |
1508 | ||
1bedd215 AC |
1509 | add_info ("pidlist", procfs_pidlist, _("pidlist")); |
1510 | add_info ("meminfo", procfs_meminfo, _("memory information")); | |
d737fd7f KW |
1511 | |
1512 | nto_is_nto_target = procfs_is_nto_target; | |
61bb466e KW |
1513 | } |
1514 | ||
1515 | ||
1516 | static int | |
f486487f | 1517 | procfs_hw_watchpoint (int addr, int len, enum target_hw_bp_type type) |
61bb466e KW |
1518 | { |
1519 | procfs_break brk; | |
1520 | ||
1521 | switch (type) | |
1522 | { | |
f486487f | 1523 | case hw_read: |
61bb466e KW |
1524 | brk.type = _DEBUG_BREAK_RD; |
1525 | break; | |
f486487f | 1526 | case hw_access: |
61bb466e KW |
1527 | brk.type = _DEBUG_BREAK_RW; |
1528 | break; | |
1529 | default: /* Modify. */ | |
1530 | /* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */ | |
1531 | brk.type = _DEBUG_BREAK_RW; | |
1532 | } | |
1533 | brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */ | |
1534 | brk.addr = addr; | |
1535 | brk.size = len; | |
1536 | ||
1537 | errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0); | |
1538 | if (errno != EOK) | |
1539 | { | |
9b20d036 | 1540 | perror (_("Failed to set hardware watchpoint")); |
61bb466e KW |
1541 | return -1; |
1542 | } | |
1543 | return 0; | |
1544 | } | |
1545 | ||
57810aa7 | 1546 | bool |
f6ac5f3d PA |
1547 | nto_procfs_target::can_use_hw_breakpoint (enum bptype type, |
1548 | int cnt, int othertype) | |
61bb466e KW |
1549 | { |
1550 | return 1; | |
1551 | } | |
1552 | ||
f6ac5f3d PA |
1553 | int |
1554 | nto_procfs_target::remove_hw_watchpoint (CORE_ADDR addr, int len, | |
1555 | enum target_hw_bp_type type, | |
1556 | struct expression *cond) | |
61bb466e KW |
1557 | { |
1558 | return procfs_hw_watchpoint (addr, -1, type); | |
1559 | } | |
1560 | ||
f6ac5f3d PA |
1561 | int |
1562 | nto_procfs_target::insert_hw_watchpoint (CORE_ADDR addr, int len, | |
1563 | enum target_hw_bp_type type, | |
1564 | struct expression *cond) | |
61bb466e KW |
1565 | { |
1566 | return procfs_hw_watchpoint (addr, len, type); | |
1567 | } | |
1568 | ||
57810aa7 | 1569 | bool |
f6ac5f3d | 1570 | nto_procfs_target::stopped_by_watchpoint () |
61bb466e | 1571 | { |
a9889169 AR |
1572 | /* NOTE: nto_stopped_by_watchpoint will be called ONLY while we are |
1573 | stopped due to a SIGTRAP. This assumes gdb works in 'all-stop' mode; | |
1574 | future gdb versions will likely run in 'non-stop' mode in which case | |
1575 | we will have to store/examine statuses per thread in question. | |
1576 | Until then, this will work fine. */ | |
1577 | ||
1578 | struct inferior *inf = current_inferior (); | |
1579 | struct nto_inferior_data *inf_data; | |
1580 | ||
1581 | gdb_assert (inf != NULL); | |
1582 | ||
1583 | inf_data = nto_inferior_data (inf); | |
1584 | ||
1585 | return inf_data->stopped_flags | |
1586 | & (_DEBUG_FLAG_TRACE_RD | |
1587 | | _DEBUG_FLAG_TRACE_WR | |
1588 | | _DEBUG_FLAG_TRACE_MODIFY); | |
61bb466e | 1589 | } |