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da59e081 | 1 | /* Interface GDB to the GNU Hurd. |
ecd75fc8 | 2 | Copyright (C) 1992-2014 Free Software Foundation, Inc. |
c906108c SS |
3 | |
4 | This file is part of GDB. | |
5 | ||
6 | Written by Miles Bader <miles@gnu.ai.mit.edu> | |
7 | ||
8 | Some code and ideas from m3-nat.c by Jukka Virtanen <jtv@hut.fi> | |
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 |
c906108c SS |
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 | |
47d48711 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 22 | |
0baeab03 PA |
23 | #include "defs.h" |
24 | ||
2747183e | 25 | #include <ctype.h> |
942fd805 | 26 | #include <errno.h> |
c906108c | 27 | #include <limits.h> |
942fd805 MK |
28 | #include <setjmp.h> |
29 | #include <signal.h> | |
30 | #include <stdio.h> | |
0e9f083f | 31 | #include <string.h> |
c906108c SS |
32 | #include <sys/ptrace.h> |
33 | ||
c906108c | 34 | #include <mach.h> |
c906108c SS |
35 | #include <mach_error.h> |
36 | #include <mach/exception.h> | |
942fd805 MK |
37 | #include <mach/message.h> |
38 | #include <mach/notify.h> | |
c906108c SS |
39 | #include <mach/vm_attributes.h> |
40 | ||
942fd805 MK |
41 | #include <hurd.h> |
42 | #include <hurd/interrupt.h> | |
c906108c SS |
43 | #include <hurd/msg.h> |
44 | #include <hurd/msg_request.h> | |
942fd805 | 45 | #include <hurd/process.h> |
96ffcb62 AS |
46 | /* Defined in <hurd/process.h>, but we need forward declarations from |
47 | <hurd/process_request.h> as well. */ | |
48 | #undef _process_user_ | |
942fd805 | 49 | #include <hurd/process_request.h> |
c906108c | 50 | #include <hurd/signal.h> |
c906108c SS |
51 | #include <hurd/sigpreempt.h> |
52 | ||
53 | #include <portinfo.h> | |
54 | ||
c906108c SS |
55 | #include "inferior.h" |
56 | #include "symtab.h" | |
57 | #include "value.h" | |
58 | #include "language.h" | |
59 | #include "target.h" | |
03f2053f | 60 | #include "gdb_wait.h" |
c906108c SS |
61 | #include "gdbcmd.h" |
62 | #include "gdbcore.h" | |
942fd805 | 63 | #include "gdbthread.h" |
bf62e5b4 | 64 | #include "gdb_assert.h" |
3b3e6bee | 65 | #include "gdb_obstack.h" |
c906108c SS |
66 | |
67 | #include "gnu-nat.h" | |
b4d1e8c7 | 68 | #include "inf-child.h" |
c906108c SS |
69 | |
70 | #include "exc_request_S.h" | |
71 | #include "notify_S.h" | |
72 | #include "process_reply_S.h" | |
73 | #include "msg_reply_S.h" | |
74 | #include "exc_request_U.h" | |
75 | #include "msg_U.h" | |
76 | ||
77 | static process_t proc_server = MACH_PORT_NULL; | |
78 | ||
79 | /* If we've sent a proc_wait_request to the proc server, the pid of the | |
80 | process we asked about. We can only ever have one outstanding. */ | |
81 | int proc_wait_pid = 0; | |
82 | ||
83 | /* The number of wait requests we've sent, and expect replies from. */ | |
84 | int proc_waits_pending = 0; | |
85 | ||
86 | int gnu_debug_flag = 0; | |
87 | ||
88 | /* Forward decls */ | |
89 | ||
c906108c SS |
90 | struct inf *make_inf (); |
91 | void inf_clear_wait (struct inf *inf); | |
92 | void inf_cleanup (struct inf *inf); | |
93 | void inf_startup (struct inf *inf, int pid); | |
94 | int inf_update_suspends (struct inf *inf); | |
95 | void inf_set_pid (struct inf *inf, pid_t pid); | |
96 | void inf_validate_procs (struct inf *inf); | |
97 | void inf_steal_exc_ports (struct inf *inf); | |
98 | void inf_restore_exc_ports (struct inf *inf); | |
99 | struct proc *inf_tid_to_proc (struct inf *inf, int tid); | |
39efb398 AC |
100 | void inf_set_threads_resume_sc (struct inf *inf, |
101 | struct proc *run_thread, | |
102 | int run_others); | |
103 | int inf_set_threads_resume_sc_for_signal_thread (struct inf *inf); | |
104 | void inf_suspend (struct inf *inf); | |
105 | void inf_resume (struct inf *inf); | |
c906108c SS |
106 | void inf_set_step_thread (struct inf *inf, struct proc *proc); |
107 | void inf_detach (struct inf *inf); | |
108 | void inf_attach (struct inf *inf, int pid); | |
2ea28649 | 109 | void inf_signal (struct inf *inf, enum gdb_signal sig); |
cce74817 | 110 | void inf_continue (struct inf *inf); |
c906108c SS |
111 | |
112 | #define inf_debug(_inf, msg, args...) \ | |
113 | do { struct inf *__inf = (_inf); \ | |
a74ce742 PM |
114 | debug ("{inf %d %s}: " msg, __inf->pid, \ |
115 | host_address_to_string (__inf) , ##args); } while (0) | |
c906108c SS |
116 | |
117 | void proc_abort (struct proc *proc, int force); | |
c906108c SS |
118 | struct proc *make_proc (struct inf *inf, mach_port_t port, int tid); |
119 | struct proc *_proc_free (struct proc *proc); | |
120 | int proc_update_sc (struct proc *proc); | |
c5aa993b | 121 | error_t proc_get_exception_port (struct proc *proc, mach_port_t * port); |
c906108c SS |
122 | error_t proc_set_exception_port (struct proc *proc, mach_port_t port); |
123 | static mach_port_t _proc_get_exc_port (struct proc *proc); | |
124 | void proc_steal_exc_port (struct proc *proc, mach_port_t exc_port); | |
125 | void proc_restore_exc_port (struct proc *proc); | |
126 | int proc_trace (struct proc *proc, int set); | |
c906108c SS |
127 | |
128 | /* Evaluate RPC_EXPR in a scope with the variables MSGPORT and REFPORT bound | |
129 | to INF's msg port and task port respectively. If it has no msg port, | |
130 | EIEIO is returned. INF must refer to a running process! */ | |
131 | #define INF_MSGPORT_RPC(inf, rpc_expr) \ | |
132 | HURD_MSGPORT_RPC (proc_getmsgport (proc_server, inf->pid, &msgport), \ | |
133 | (refport = inf->task->port, 0), 0, \ | |
134 | msgport ? (rpc_expr) : EIEIO) | |
135 | ||
136 | /* Like INF_MSGPORT_RPC, but will also resume the signal thread to ensure | |
137 | there's someone around to deal with the RPC (and resuspend things | |
138 | afterwards). This effects INF's threads' resume_sc count. */ | |
139 | #define INF_RESUME_MSGPORT_RPC(inf, rpc_expr) \ | |
140 | (inf_set_threads_resume_sc_for_signal_thread (inf) \ | |
141 | ? ({ error_t __e; \ | |
142 | inf_resume (inf); \ | |
143 | __e = INF_MSGPORT_RPC (inf, rpc_expr); \ | |
144 | inf_suspend (inf); \ | |
145 | __e; }) \ | |
146 | : EIEIO) | |
147 | ||
c906108c SS |
148 | \f |
149 | /* The state passed by an exception message. */ | |
150 | struct exc_state | |
c5aa993b | 151 | { |
0963b4bd | 152 | int exception; /* The exception code. */ |
c5aa993b | 153 | int code, subcode; |
0963b4bd MS |
154 | mach_port_t handler; /* The real exception port to handle this. */ |
155 | mach_port_t reply; /* The reply port from the exception call. */ | |
c5aa993b | 156 | }; |
c906108c | 157 | |
0963b4bd | 158 | /* The results of the last wait an inf did. */ |
c906108c | 159 | struct inf_wait |
c5aa993b JM |
160 | { |
161 | struct target_waitstatus status; /* The status returned to gdb. */ | |
0963b4bd | 162 | struct exc_state exc; /* The exception that caused us to return. */ |
c5aa993b JM |
163 | struct proc *thread; /* The thread in question. */ |
164 | int suppress; /* Something trivial happened. */ | |
165 | }; | |
c906108c SS |
166 | |
167 | /* The state of an inferior. */ | |
168 | struct inf | |
c5aa993b JM |
169 | { |
170 | /* Fields describing the current inferior. */ | |
c906108c | 171 | |
c5aa993b JM |
172 | struct proc *task; /* The mach task. */ |
173 | struct proc *threads; /* A linked list of all threads in TASK. */ | |
c906108c | 174 | |
0963b4bd MS |
175 | /* True if THREADS needn't be validated by querying the task. We |
176 | assume that we and the task in question are the only ones | |
177 | frobbing the thread list, so as long as we don't let any code | |
178 | run, we don't have to worry about THREADS changing. */ | |
c5aa993b | 179 | int threads_up_to_date; |
c906108c | 180 | |
0963b4bd | 181 | pid_t pid; /* The real system PID. */ |
c906108c | 182 | |
c5aa993b | 183 | struct inf_wait wait; /* What to return from target_wait. */ |
c906108c | 184 | |
0963b4bd MS |
185 | /* One thread proc in INF may be in `single-stepping mode'. This |
186 | is it. */ | |
c5aa993b | 187 | struct proc *step_thread; |
c906108c | 188 | |
c5aa993b JM |
189 | /* The thread we think is the signal thread. */ |
190 | struct proc *signal_thread; | |
c906108c | 191 | |
c5aa993b | 192 | mach_port_t event_port; /* Where we receive various msgs. */ |
c906108c | 193 | |
c5aa993b JM |
194 | /* True if we think at least one thread in the inferior could currently be |
195 | running. */ | |
196 | unsigned int running:1; | |
c906108c | 197 | |
c5aa993b JM |
198 | /* True if the process has stopped (in the proc server sense). Note that |
199 | since a proc server `stop' leaves the signal thread running, the inf can | |
200 | be RUNNING && STOPPED... */ | |
201 | unsigned int stopped:1; | |
cce74817 | 202 | |
c5aa993b JM |
203 | /* True if the inferior has no message port. */ |
204 | unsigned int nomsg:1; | |
c906108c | 205 | |
c5aa993b JM |
206 | /* True if the inferior is traced. */ |
207 | unsigned int traced:1; | |
c906108c | 208 | |
c5aa993b JM |
209 | /* True if we shouldn't try waiting for the inferior, usually because we |
210 | can't for some reason. */ | |
211 | unsigned int no_wait:1; | |
c906108c | 212 | |
c5aa993b JM |
213 | /* When starting a new inferior, we don't try to validate threads until all |
214 | the proper execs have been done. This is a count of how many execs we | |
215 | expect to happen. */ | |
216 | unsigned pending_execs; | |
c906108c | 217 | |
0963b4bd | 218 | /* Fields describing global state. */ |
c906108c | 219 | |
c5aa993b JM |
220 | /* The task suspend count used when gdb has control. This is normally 1 to |
221 | make things easier for us, but sometimes (like when attaching to vital | |
222 | system servers) it may be desirable to let the task continue to run | |
223 | (pausing individual threads as necessary). */ | |
224 | int pause_sc; | |
c906108c | 225 | |
c5aa993b JM |
226 | /* The task suspend count left when detaching from a task. */ |
227 | int detach_sc; | |
c906108c | 228 | |
c5aa993b JM |
229 | /* The initial values used for the run_sc and pause_sc of newly discovered |
230 | threads -- see the definition of those fields in struct proc. */ | |
231 | int default_thread_run_sc; | |
232 | int default_thread_pause_sc; | |
233 | int default_thread_detach_sc; | |
c906108c | 234 | |
c5aa993b JM |
235 | /* True if the process should be traced when started/attached. Newly |
236 | started processes *must* be traced at first to exec them properly, but | |
237 | if this is false, tracing is turned off as soon it has done so. */ | |
238 | int want_signals; | |
c906108c | 239 | |
c5aa993b JM |
240 | /* True if exceptions from the inferior process should be trapped. This |
241 | must be on to use breakpoints. */ | |
242 | int want_exceptions; | |
243 | }; | |
c906108c SS |
244 | |
245 | ||
c5aa993b JM |
246 | int |
247 | __proc_pid (struct proc *proc) | |
c906108c SS |
248 | { |
249 | return proc->inf->pid; | |
250 | } | |
942fd805 | 251 | |
c906108c SS |
252 | \f |
253 | /* Update PROC's real suspend count to match it's desired one. Returns true | |
254 | if we think PROC is now in a runnable state. */ | |
255 | int | |
256 | proc_update_sc (struct proc *proc) | |
257 | { | |
258 | int running; | |
c5aa993b | 259 | int err = 0; |
c906108c SS |
260 | int delta = proc->sc - proc->cur_sc; |
261 | ||
262 | if (delta) | |
263 | proc_debug (proc, "sc: %d --> %d", proc->cur_sc, proc->sc); | |
264 | ||
265 | if (proc->sc == 0 && proc->state_changed) | |
0963b4bd | 266 | /* Since PROC may start running, we must write back any state changes. */ |
c906108c | 267 | { |
bf62e5b4 | 268 | gdb_assert (proc_is_thread (proc)); |
c906108c SS |
269 | proc_debug (proc, "storing back changed thread state"); |
270 | err = thread_set_state (proc->port, THREAD_STATE_FLAVOR, | |
f75c77fc | 271 | (thread_state_t) &proc->state, THREAD_STATE_SIZE); |
c5aa993b | 272 | if (!err) |
c906108c SS |
273 | proc->state_changed = 0; |
274 | } | |
275 | ||
276 | if (delta > 0) | |
942fd805 MK |
277 | { |
278 | while (delta-- > 0 && !err) | |
279 | { | |
280 | if (proc_is_task (proc)) | |
281 | err = task_suspend (proc->port); | |
282 | else | |
283 | err = thread_suspend (proc->port); | |
284 | } | |
285 | } | |
c906108c | 286 | else |
942fd805 MK |
287 | { |
288 | while (delta++ < 0 && !err) | |
289 | { | |
290 | if (proc_is_task (proc)) | |
291 | err = task_resume (proc->port); | |
292 | else | |
293 | err = thread_resume (proc->port); | |
294 | } | |
295 | } | |
c5aa993b | 296 | if (!err) |
c906108c SS |
297 | proc->cur_sc = proc->sc; |
298 | ||
299 | /* If we got an error, then the task/thread has disappeared. */ | |
300 | running = !err && proc->sc == 0; | |
301 | ||
302 | proc_debug (proc, "is %s", err ? "dead" : running ? "running" : "suspended"); | |
303 | if (err) | |
dc672865 | 304 | proc_debug (proc, "err = %s", safe_strerror (err)); |
c906108c SS |
305 | |
306 | if (running) | |
307 | { | |
308 | proc->aborted = 0; | |
309 | proc->state_valid = proc->state_changed = 0; | |
310 | proc->fetched_regs = 0; | |
311 | } | |
312 | ||
313 | return running; | |
314 | } | |
942fd805 | 315 | |
c906108c SS |
316 | \f |
317 | /* Thread_abort is called on PROC if needed. PROC must be a thread proc. | |
318 | If PROC is deemed `precious', then nothing is done unless FORCE is true. | |
319 | In particular, a thread is precious if it's running (in which case forcing | |
320 | it includes suspending it first), or if it has an exception pending. */ | |
321 | void | |
322 | proc_abort (struct proc *proc, int force) | |
323 | { | |
bf62e5b4 | 324 | gdb_assert (proc_is_thread (proc)); |
c906108c | 325 | |
c5aa993b | 326 | if (!proc->aborted) |
c906108c SS |
327 | { |
328 | struct inf *inf = proc->inf; | |
329 | int running = (proc->cur_sc == 0 && inf->task->cur_sc == 0); | |
330 | ||
331 | if (running && force) | |
332 | { | |
333 | proc->sc = 1; | |
334 | inf_update_suspends (proc->inf); | |
335 | running = 0; | |
8a3fe4f8 | 336 | warning (_("Stopped %s."), proc_string (proc)); |
c906108c SS |
337 | } |
338 | else if (proc == inf->wait.thread && inf->wait.exc.reply && !force) | |
339 | /* An exception is pending on PROC, which don't mess with. */ | |
340 | running = 1; | |
341 | ||
c5aa993b | 342 | if (!running) |
c906108c SS |
343 | /* We only abort the thread if it's not actually running. */ |
344 | { | |
345 | thread_abort (proc->port); | |
346 | proc_debug (proc, "aborted"); | |
347 | proc->aborted = 1; | |
348 | } | |
349 | else | |
350 | proc_debug (proc, "not aborting"); | |
351 | } | |
352 | } | |
353 | ||
354 | /* Make sure that the state field in PROC is up to date, and return a pointer | |
355 | to it, or 0 if something is wrong. If WILL_MODIFY is true, makes sure | |
356 | that the thread is stopped and aborted first, and sets the state_changed | |
357 | field in PROC to true. */ | |
358 | thread_state_t | |
359 | proc_get_state (struct proc *proc, int will_modify) | |
360 | { | |
361 | int was_aborted = proc->aborted; | |
362 | ||
363 | proc_debug (proc, "updating state info%s", | |
364 | will_modify ? " (with intention to modify)" : ""); | |
365 | ||
366 | proc_abort (proc, will_modify); | |
367 | ||
c5aa993b | 368 | if (!was_aborted && proc->aborted) |
c906108c SS |
369 | /* PROC's state may have changed since we last fetched it. */ |
370 | proc->state_valid = 0; | |
371 | ||
c5aa993b | 372 | if (!proc->state_valid) |
c906108c SS |
373 | { |
374 | mach_msg_type_number_t state_size = THREAD_STATE_SIZE; | |
375 | error_t err = | |
d8734c88 MS |
376 | thread_get_state (proc->port, THREAD_STATE_FLAVOR, |
377 | (thread_state_t) &proc->state, &state_size); | |
378 | ||
c906108c SS |
379 | proc_debug (proc, "getting thread state"); |
380 | proc->state_valid = !err; | |
381 | } | |
382 | ||
383 | if (proc->state_valid) | |
384 | { | |
385 | if (will_modify) | |
386 | proc->state_changed = 1; | |
f75c77fc | 387 | return (thread_state_t) &proc->state; |
c906108c SS |
388 | } |
389 | else | |
390 | return 0; | |
391 | } | |
942fd805 | 392 | |
c906108c SS |
393 | \f |
394 | /* Set PORT to PROC's exception port. */ | |
395 | error_t | |
c5aa993b | 396 | proc_get_exception_port (struct proc * proc, mach_port_t * port) |
c906108c SS |
397 | { |
398 | if (proc_is_task (proc)) | |
399 | return task_get_exception_port (proc->port, port); | |
400 | else | |
401 | return thread_get_exception_port (proc->port, port); | |
402 | } | |
403 | ||
404 | /* Set PROC's exception port to PORT. */ | |
405 | error_t | |
c5aa993b | 406 | proc_set_exception_port (struct proc * proc, mach_port_t port) |
c906108c SS |
407 | { |
408 | proc_debug (proc, "setting exception port: %d", port); | |
409 | if (proc_is_task (proc)) | |
410 | return task_set_exception_port (proc->port, port); | |
411 | else | |
412 | return thread_set_exception_port (proc->port, port); | |
413 | } | |
414 | ||
415 | /* Get PROC's exception port, cleaning up a bit if proc has died. */ | |
416 | static mach_port_t | |
417 | _proc_get_exc_port (struct proc *proc) | |
418 | { | |
419 | mach_port_t exc_port; | |
420 | error_t err = proc_get_exception_port (proc, &exc_port); | |
421 | ||
422 | if (err) | |
423 | /* PROC must be dead. */ | |
424 | { | |
425 | if (proc->exc_port) | |
426 | mach_port_deallocate (mach_task_self (), proc->exc_port); | |
427 | proc->exc_port = MACH_PORT_NULL; | |
428 | if (proc->saved_exc_port) | |
429 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
430 | proc->saved_exc_port = MACH_PORT_NULL; | |
431 | } | |
432 | ||
433 | return exc_port; | |
434 | } | |
435 | ||
0963b4bd MS |
436 | /* Replace PROC's exception port with EXC_PORT, unless it's already |
437 | been done. Stash away any existing exception port so we can | |
438 | restore it later. */ | |
c906108c SS |
439 | void |
440 | proc_steal_exc_port (struct proc *proc, mach_port_t exc_port) | |
441 | { | |
442 | mach_port_t cur_exc_port = _proc_get_exc_port (proc); | |
443 | ||
444 | if (cur_exc_port) | |
445 | { | |
942fd805 | 446 | error_t err = 0; |
c906108c SS |
447 | |
448 | proc_debug (proc, "inserting exception port: %d", exc_port); | |
449 | ||
450 | if (cur_exc_port != exc_port) | |
451 | /* Put in our exception port. */ | |
452 | err = proc_set_exception_port (proc, exc_port); | |
453 | ||
454 | if (err || cur_exc_port == proc->exc_port) | |
455 | /* We previously set the exception port, and it's still set. So we | |
456 | just keep the old saved port which is what the proc set. */ | |
457 | { | |
458 | if (cur_exc_port) | |
459 | mach_port_deallocate (mach_task_self (), cur_exc_port); | |
460 | } | |
461 | else | |
0963b4bd | 462 | /* Keep a copy of PROC's old exception port so it can be restored. */ |
c906108c SS |
463 | { |
464 | if (proc->saved_exc_port) | |
465 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
466 | proc->saved_exc_port = cur_exc_port; | |
467 | } | |
468 | ||
469 | proc_debug (proc, "saved exception port: %d", proc->saved_exc_port); | |
470 | ||
471 | if (!err) | |
472 | proc->exc_port = exc_port; | |
473 | else | |
8a3fe4f8 | 474 | warning (_("Error setting exception port for %s: %s"), |
dc672865 | 475 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
476 | } |
477 | } | |
478 | ||
479 | /* If we previously replaced PROC's exception port, put back what we | |
480 | found there at the time, unless *our* exception port has since been | |
481 | overwritten, in which case who knows what's going on. */ | |
482 | void | |
483 | proc_restore_exc_port (struct proc *proc) | |
484 | { | |
485 | mach_port_t cur_exc_port = _proc_get_exc_port (proc); | |
486 | ||
487 | if (cur_exc_port) | |
488 | { | |
489 | error_t err = 0; | |
490 | ||
491 | proc_debug (proc, "restoring real exception port"); | |
492 | ||
493 | if (proc->exc_port == cur_exc_port) | |
494 | /* Our's is still there. */ | |
495 | err = proc_set_exception_port (proc, proc->saved_exc_port); | |
496 | ||
497 | if (proc->saved_exc_port) | |
498 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
499 | proc->saved_exc_port = MACH_PORT_NULL; | |
500 | ||
501 | if (!err) | |
502 | proc->exc_port = MACH_PORT_NULL; | |
503 | else | |
8a3fe4f8 | 504 | warning (_("Error setting exception port for %s: %s"), |
dc672865 | 505 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
506 | } |
507 | } | |
942fd805 | 508 | |
c906108c SS |
509 | \f |
510 | /* Turns hardware tracing in PROC on or off when SET is true or false, | |
511 | respectively. Returns true on success. */ | |
512 | int | |
513 | proc_trace (struct proc *proc, int set) | |
514 | { | |
515 | thread_state_t state = proc_get_state (proc, 1); | |
516 | ||
c5aa993b | 517 | if (!state) |
0963b4bd | 518 | return 0; /* The thread must be dead. */ |
c906108c SS |
519 | |
520 | proc_debug (proc, "tracing %s", set ? "on" : "off"); | |
c5aa993b | 521 | |
c906108c SS |
522 | if (set) |
523 | { | |
524 | /* XXX We don't get the exception unless the thread has its own | |
0963b4bd | 525 | exception port???? */ |
c906108c SS |
526 | if (proc->exc_port == MACH_PORT_NULL) |
527 | proc_steal_exc_port (proc, proc->inf->event_port); | |
528 | THREAD_STATE_SET_TRACED (state); | |
529 | } | |
530 | else | |
531 | THREAD_STATE_CLEAR_TRACED (state); | |
532 | ||
533 | return 1; | |
534 | } | |
942fd805 | 535 | |
c906108c SS |
536 | \f |
537 | /* A variable from which to assign new TIDs. */ | |
538 | static int next_thread_id = 1; | |
539 | ||
540 | /* Returns a new proc structure with the given fields. Also adds a | |
541 | notification for PORT becoming dead to be sent to INF's notify port. */ | |
542 | struct proc * | |
543 | make_proc (struct inf *inf, mach_port_t port, int tid) | |
544 | { | |
545 | error_t err; | |
546 | mach_port_t prev_port = MACH_PORT_NULL; | |
3c37485b | 547 | struct proc *proc = xmalloc (sizeof (struct proc)); |
c906108c SS |
548 | |
549 | proc->port = port; | |
550 | proc->tid = tid; | |
551 | proc->inf = inf; | |
552 | proc->next = 0; | |
553 | proc->saved_exc_port = MACH_PORT_NULL; | |
554 | proc->exc_port = MACH_PORT_NULL; | |
555 | ||
556 | proc->sc = 0; | |
557 | proc->cur_sc = 0; | |
558 | ||
559 | /* Note that these are all the values for threads; the task simply uses the | |
560 | corresponding field in INF directly. */ | |
561 | proc->run_sc = inf->default_thread_run_sc; | |
562 | proc->pause_sc = inf->default_thread_pause_sc; | |
563 | proc->detach_sc = inf->default_thread_detach_sc; | |
564 | proc->resume_sc = proc->run_sc; | |
565 | ||
566 | proc->aborted = 0; | |
567 | proc->dead = 0; | |
568 | proc->state_valid = 0; | |
569 | proc->state_changed = 0; | |
570 | ||
571 | proc_debug (proc, "is new"); | |
572 | ||
573 | /* Get notified when things die. */ | |
574 | err = | |
c5aa993b | 575 | mach_port_request_notification (mach_task_self (), port, |
c906108c SS |
576 | MACH_NOTIFY_DEAD_NAME, 1, |
577 | inf->event_port, | |
578 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
579 | &prev_port); | |
580 | if (err) | |
8a3fe4f8 | 581 | warning (_("Couldn't request notification for port %d: %s"), |
dc672865 | 582 | port, safe_strerror (err)); |
c906108c SS |
583 | else |
584 | { | |
585 | proc_debug (proc, "notifications to: %d", inf->event_port); | |
586 | if (prev_port != MACH_PORT_NULL) | |
587 | mach_port_deallocate (mach_task_self (), prev_port); | |
588 | } | |
589 | ||
590 | if (inf->want_exceptions) | |
942fd805 MK |
591 | { |
592 | if (proc_is_task (proc)) | |
593 | /* Make the task exception port point to us. */ | |
594 | proc_steal_exc_port (proc, inf->event_port); | |
595 | else | |
596 | /* Just clear thread exception ports -- they default to the | |
597 | task one. */ | |
598 | proc_steal_exc_port (proc, MACH_PORT_NULL); | |
599 | } | |
c906108c SS |
600 | |
601 | return proc; | |
602 | } | |
603 | ||
604 | /* Frees PROC and any resources it uses, and returns the value of PROC's | |
605 | next field. */ | |
606 | struct proc * | |
607 | _proc_free (struct proc *proc) | |
608 | { | |
609 | struct inf *inf = proc->inf; | |
610 | struct proc *next = proc->next; | |
611 | ||
612 | proc_debug (proc, "freeing..."); | |
613 | ||
614 | if (proc == inf->step_thread) | |
615 | /* Turn off single stepping. */ | |
616 | inf_set_step_thread (inf, 0); | |
617 | if (proc == inf->wait.thread) | |
618 | inf_clear_wait (inf); | |
619 | if (proc == inf->signal_thread) | |
620 | inf->signal_thread = 0; | |
621 | ||
622 | if (proc->port != MACH_PORT_NULL) | |
623 | { | |
624 | if (proc->exc_port != MACH_PORT_NULL) | |
625 | /* Restore the original exception port. */ | |
626 | proc_restore_exc_port (proc); | |
627 | if (proc->cur_sc != 0) | |
628 | /* Resume the thread/task. */ | |
629 | { | |
630 | proc->sc = 0; | |
631 | proc_update_sc (proc); | |
632 | } | |
633 | mach_port_deallocate (mach_task_self (), proc->port); | |
634 | } | |
635 | ||
b8c9b27d | 636 | xfree (proc); |
c906108c SS |
637 | return next; |
638 | } | |
942fd805 | 639 | |
c906108c | 640 | \f |
c5aa993b | 641 | struct inf * |
fba45db2 | 642 | make_inf (void) |
c906108c | 643 | { |
3c37485b | 644 | struct inf *inf = xmalloc (sizeof (struct inf)); |
c906108c SS |
645 | |
646 | inf->task = 0; | |
647 | inf->threads = 0; | |
648 | inf->threads_up_to_date = 0; | |
649 | inf->pid = 0; | |
650 | inf->wait.status.kind = TARGET_WAITKIND_SPURIOUS; | |
651 | inf->wait.thread = 0; | |
652 | inf->wait.exc.handler = MACH_PORT_NULL; | |
653 | inf->wait.exc.reply = MACH_PORT_NULL; | |
654 | inf->step_thread = 0; | |
655 | inf->signal_thread = 0; | |
656 | inf->event_port = MACH_PORT_NULL; | |
c906108c | 657 | inf->running = 0; |
cce74817 JM |
658 | inf->stopped = 0; |
659 | inf->nomsg = 1; | |
c906108c SS |
660 | inf->traced = 0; |
661 | inf->no_wait = 0; | |
662 | inf->pending_execs = 0; | |
663 | inf->pause_sc = 1; | |
664 | inf->detach_sc = 0; | |
665 | inf->default_thread_run_sc = 0; | |
666 | inf->default_thread_pause_sc = 0; | |
667 | inf->default_thread_detach_sc = 0; | |
668 | inf->want_signals = 1; /* By default */ | |
669 | inf->want_exceptions = 1; /* By default */ | |
670 | ||
671 | return inf; | |
672 | } | |
673 | ||
942fd805 | 674 | /* Clear INF's target wait status. */ |
c906108c SS |
675 | void |
676 | inf_clear_wait (struct inf *inf) | |
677 | { | |
678 | inf_debug (inf, "clearing wait"); | |
679 | inf->wait.status.kind = TARGET_WAITKIND_SPURIOUS; | |
680 | inf->wait.thread = 0; | |
681 | inf->wait.suppress = 0; | |
682 | if (inf->wait.exc.handler != MACH_PORT_NULL) | |
683 | { | |
684 | mach_port_deallocate (mach_task_self (), inf->wait.exc.handler); | |
685 | inf->wait.exc.handler = MACH_PORT_NULL; | |
686 | } | |
687 | if (inf->wait.exc.reply != MACH_PORT_NULL) | |
688 | { | |
689 | mach_port_deallocate (mach_task_self (), inf->wait.exc.reply); | |
690 | inf->wait.exc.reply = MACH_PORT_NULL; | |
691 | } | |
692 | } | |
942fd805 | 693 | |
c906108c SS |
694 | \f |
695 | void | |
696 | inf_cleanup (struct inf *inf) | |
697 | { | |
698 | inf_debug (inf, "cleanup"); | |
699 | ||
700 | inf_clear_wait (inf); | |
701 | ||
702 | inf_set_pid (inf, -1); | |
703 | inf->pid = 0; | |
cce74817 JM |
704 | inf->running = 0; |
705 | inf->stopped = 0; | |
706 | inf->nomsg = 1; | |
c906108c SS |
707 | inf->traced = 0; |
708 | inf->no_wait = 0; | |
c906108c SS |
709 | inf->pending_execs = 0; |
710 | ||
711 | if (inf->event_port) | |
712 | { | |
713 | mach_port_destroy (mach_task_self (), inf->event_port); | |
714 | inf->event_port = MACH_PORT_NULL; | |
715 | } | |
716 | } | |
717 | ||
718 | void | |
719 | inf_startup (struct inf *inf, int pid) | |
720 | { | |
721 | error_t err; | |
722 | ||
723 | inf_debug (inf, "startup: pid = %d", pid); | |
724 | ||
725 | inf_cleanup (inf); | |
726 | ||
727 | /* Make the port on which we receive all events. */ | |
728 | err = mach_port_allocate (mach_task_self (), | |
729 | MACH_PORT_RIGHT_RECEIVE, &inf->event_port); | |
730 | if (err) | |
8a3fe4f8 | 731 | error (_("Error allocating event port: %s"), safe_strerror (err)); |
c906108c SS |
732 | |
733 | /* Make a send right for it, so we can easily copy it for other people. */ | |
734 | mach_port_insert_right (mach_task_self (), inf->event_port, | |
735 | inf->event_port, MACH_MSG_TYPE_MAKE_SEND); | |
736 | inf_set_pid (inf, pid); | |
737 | } | |
942fd805 | 738 | |
c906108c | 739 | \f |
942fd805 | 740 | /* Close current process, if any, and attach INF to process PORT. */ |
c5aa993b | 741 | void |
c906108c SS |
742 | inf_set_pid (struct inf *inf, pid_t pid) |
743 | { | |
744 | task_t task_port; | |
745 | struct proc *task = inf->task; | |
746 | ||
747 | inf_debug (inf, "setting pid: %d", pid); | |
748 | ||
749 | if (pid < 0) | |
750 | task_port = MACH_PORT_NULL; | |
751 | else | |
752 | { | |
753 | error_t err = proc_pid2task (proc_server, pid, &task_port); | |
d8734c88 | 754 | |
c906108c | 755 | if (err) |
0963b4bd MS |
756 | error (_("Error getting task for pid %d: %s"), |
757 | pid, safe_strerror (err)); | |
c906108c SS |
758 | } |
759 | ||
760 | inf_debug (inf, "setting task: %d", task_port); | |
761 | ||
762 | if (inf->pause_sc) | |
763 | task_suspend (task_port); | |
764 | ||
765 | if (task && task->port != task_port) | |
766 | { | |
767 | inf->task = 0; | |
0963b4bd MS |
768 | inf_validate_procs (inf); /* Trash all the threads. */ |
769 | _proc_free (task); /* And the task. */ | |
c906108c SS |
770 | } |
771 | ||
772 | if (task_port != MACH_PORT_NULL) | |
773 | { | |
774 | inf->task = make_proc (inf, task_port, PROC_TID_TASK); | |
775 | inf->threads_up_to_date = 0; | |
776 | } | |
777 | ||
778 | if (inf->task) | |
779 | { | |
780 | inf->pid = pid; | |
781 | if (inf->pause_sc) | |
942fd805 MK |
782 | /* Reflect task_suspend above. */ |
783 | inf->task->sc = inf->task->cur_sc = 1; | |
c906108c SS |
784 | } |
785 | else | |
786 | inf->pid = -1; | |
787 | } | |
942fd805 | 788 | |
c906108c | 789 | \f |
cce74817 JM |
790 | /* Validates INF's stopped, nomsg and traced field from the actual |
791 | proc server state. Note that the traced field is only updated from | |
792 | the proc server state if we do not have a message port. If we do | |
793 | have a message port we'd better look at the tracemask itself. */ | |
c906108c | 794 | static void |
cce74817 | 795 | inf_validate_procinfo (struct inf *inf) |
c906108c SS |
796 | { |
797 | char *noise; | |
798 | mach_msg_type_number_t noise_len = 0; | |
799 | struct procinfo *pi; | |
800 | mach_msg_type_number_t pi_len = 0; | |
801 | int info_flags = 0; | |
802 | error_t err = | |
d8734c88 MS |
803 | proc_getprocinfo (proc_server, inf->pid, &info_flags, |
804 | (procinfo_t *) &pi, &pi_len, &noise, &noise_len); | |
c906108c | 805 | |
c5aa993b | 806 | if (!err) |
c906108c SS |
807 | { |
808 | inf->stopped = !!(pi->state & PI_STOPPED); | |
cce74817 JM |
809 | inf->nomsg = !!(pi->state & PI_NOMSG); |
810 | if (inf->nomsg) | |
811 | inf->traced = !!(pi->state & PI_TRACED); | |
c5aa993b | 812 | vm_deallocate (mach_task_self (), (vm_address_t) pi, pi_len); |
c906108c | 813 | if (noise_len > 0) |
c5aa993b | 814 | vm_deallocate (mach_task_self (), (vm_address_t) noise, noise_len); |
c906108c SS |
815 | } |
816 | } | |
817 | ||
f90b2b1d JK |
818 | /* Validates INF's task suspend count. If it's higher than we expect, |
819 | verify with the user before `stealing' the extra count. */ | |
c906108c SS |
820 | static void |
821 | inf_validate_task_sc (struct inf *inf) | |
822 | { | |
f90b2b1d JK |
823 | char *noise; |
824 | mach_msg_type_number_t noise_len = 0; | |
825 | struct procinfo *pi; | |
826 | mach_msg_type_number_t pi_len = 0; | |
827 | int info_flags = PI_FETCH_TASKINFO; | |
828 | int suspend_count = -1; | |
829 | error_t err; | |
c906108c | 830 | |
f90b2b1d JK |
831 | retry: |
832 | err = proc_getprocinfo (proc_server, inf->pid, &info_flags, | |
942fd805 | 833 | (procinfo_t *) &pi, &pi_len, &noise, &noise_len); |
c906108c | 834 | if (err) |
f90b2b1d JK |
835 | { |
836 | inf->task->dead = 1; /* oh well */ | |
837 | return; | |
838 | } | |
839 | ||
840 | if (inf->task->cur_sc < pi->taskinfo.suspend_count && suspend_count == -1) | |
841 | { | |
842 | /* The proc server might have suspended the task while stopping | |
843 | it. This happens when the task is handling a traced signal. | |
844 | Refetch the suspend count. The proc server should be | |
845 | finished stopping the task by now. */ | |
846 | suspend_count = pi->taskinfo.suspend_count; | |
847 | goto retry; | |
848 | } | |
849 | ||
850 | suspend_count = pi->taskinfo.suspend_count; | |
851 | ||
852 | vm_deallocate (mach_task_self (), (vm_address_t) pi, pi_len); | |
853 | if (noise_len > 0) | |
854 | vm_deallocate (mach_task_self (), (vm_address_t) pi, pi_len); | |
855 | ||
856 | if (inf->task->cur_sc < suspend_count) | |
c906108c SS |
857 | { |
858 | int abort; | |
859 | ||
860 | target_terminal_ours (); /* Allow I/O. */ | |
9e2f0ad4 HZ |
861 | abort = !query (_("Pid %d has an additional task suspend count of %d;" |
862 | " clear it? "), inf->pid, | |
f90b2b1d | 863 | suspend_count - inf->task->cur_sc); |
c5aa993b | 864 | target_terminal_inferior (); /* Give it back to the child. */ |
c906108c SS |
865 | |
866 | if (abort) | |
8a3fe4f8 | 867 | error (_("Additional task suspend count left untouched.")); |
c906108c | 868 | |
f90b2b1d | 869 | inf->task->cur_sc = suspend_count; |
c906108c SS |
870 | } |
871 | } | |
872 | ||
942fd805 MK |
873 | /* Turns tracing for INF on or off, depending on ON, unless it already |
874 | is. If INF is running, the resume_sc count of INF's threads will | |
875 | be modified, and the signal thread will briefly be run to change | |
876 | the trace state. */ | |
c906108c SS |
877 | void |
878 | inf_set_traced (struct inf *inf, int on) | |
879 | { | |
942fd805 MK |
880 | if (on == inf->traced) |
881 | return; | |
882 | ||
883 | if (inf->task && !inf->task->dead) | |
884 | /* Make it take effect immediately. */ | |
885 | { | |
886 | sigset_t mask = on ? ~(sigset_t) 0 : 0; | |
887 | error_t err = | |
c5aa993b | 888 | INF_RESUME_MSGPORT_RPC (inf, msg_set_init_int (msgport, refport, |
942fd805 | 889 | INIT_TRACEMASK, mask)); |
d8734c88 | 890 | |
942fd805 MK |
891 | if (err == EIEIO) |
892 | { | |
893 | if (on) | |
8a3fe4f8 | 894 | warning (_("Can't modify tracing state for pid %d: %s"), |
942fd805 | 895 | inf->pid, "No signal thread"); |
c906108c | 896 | inf->traced = on; |
942fd805 MK |
897 | } |
898 | else if (err) | |
8a3fe4f8 | 899 | warning (_("Can't modify tracing state for pid %d: %s"), |
dc672865 | 900 | inf->pid, safe_strerror (err)); |
942fd805 MK |
901 | else |
902 | inf->traced = on; | |
903 | } | |
904 | else | |
905 | inf->traced = on; | |
c906108c | 906 | } |
942fd805 | 907 | |
c906108c | 908 | \f |
942fd805 MK |
909 | /* Makes all the real suspend count deltas of all the procs in INF |
910 | match the desired values. Careful to always do thread/task suspend | |
911 | counts in the safe order. Returns true if at least one thread is | |
0963b4bd | 912 | thought to be running. */ |
c906108c SS |
913 | int |
914 | inf_update_suspends (struct inf *inf) | |
915 | { | |
916 | struct proc *task = inf->task; | |
d8734c88 | 917 | |
c906108c SS |
918 | /* We don't have to update INF->threads even though we're iterating over it |
919 | because we'll change a thread only if it already has an existing proc | |
920 | entry. */ | |
c906108c SS |
921 | inf_debug (inf, "updating suspend counts"); |
922 | ||
923 | if (task) | |
924 | { | |
925 | struct proc *thread; | |
926 | int task_running = (task->sc == 0), thread_running = 0; | |
927 | ||
928 | if (task->sc > task->cur_sc) | |
929 | /* The task is becoming _more_ suspended; do before any threads. */ | |
930 | task_running = proc_update_sc (task); | |
931 | ||
932 | if (inf->pending_execs) | |
933 | /* When we're waiting for an exec, things may be happening behind our | |
934 | back, so be conservative. */ | |
935 | thread_running = 1; | |
936 | ||
937 | /* Do all the thread suspend counts. */ | |
938 | for (thread = inf->threads; thread; thread = thread->next) | |
939 | thread_running |= proc_update_sc (thread); | |
940 | ||
941 | if (task->sc != task->cur_sc) | |
942 | /* We didn't do the task first, because we wanted to wait for the | |
943 | threads; do it now. */ | |
944 | task_running = proc_update_sc (task); | |
945 | ||
946 | inf_debug (inf, "%srunning...", | |
947 | (thread_running && task_running) ? "" : "not "); | |
948 | ||
949 | inf->running = thread_running && task_running; | |
950 | ||
951 | /* Once any thread has executed some code, we can't depend on the | |
c5aa993b | 952 | threads list any more. */ |
c906108c SS |
953 | if (inf->running) |
954 | inf->threads_up_to_date = 0; | |
955 | ||
956 | return inf->running; | |
957 | } | |
958 | ||
959 | return 0; | |
960 | } | |
942fd805 | 961 | |
c906108c SS |
962 | \f |
963 | /* Converts a GDB pid to a struct proc. */ | |
964 | struct proc * | |
965 | inf_tid_to_thread (struct inf *inf, int tid) | |
966 | { | |
967 | struct proc *thread = inf->threads; | |
968 | ||
969 | while (thread) | |
970 | if (thread->tid == tid) | |
971 | return thread; | |
972 | else | |
973 | thread = thread->next; | |
974 | return 0; | |
975 | } | |
976 | ||
977 | /* Converts a thread port to a struct proc. */ | |
978 | struct proc * | |
979 | inf_port_to_thread (struct inf *inf, mach_port_t port) | |
980 | { | |
981 | struct proc *thread = inf->threads; | |
d8734c88 | 982 | |
c906108c SS |
983 | while (thread) |
984 | if (thread->port == port) | |
985 | return thread; | |
986 | else | |
987 | thread = thread->next; | |
988 | return 0; | |
989 | } | |
942fd805 | 990 | |
c906108c SS |
991 | \f |
992 | /* Make INF's list of threads be consistent with reality of TASK. */ | |
993 | void | |
994 | inf_validate_procs (struct inf *inf) | |
995 | { | |
c906108c | 996 | thread_array_t threads; |
942fd805 | 997 | mach_msg_type_number_t num_threads, i; |
c906108c SS |
998 | struct proc *task = inf->task; |
999 | ||
1000 | /* If no threads are currently running, this function will guarantee that | |
1001 | things are up to date. The exception is if there are zero threads -- | |
1002 | then it is almost certainly in an odd state, and probably some outside | |
1003 | agent will create threads. */ | |
1004 | inf->threads_up_to_date = inf->threads ? !inf->running : 0; | |
1005 | ||
1006 | if (task) | |
1007 | { | |
1008 | error_t err = task_threads (task->port, &threads, &num_threads); | |
d8734c88 | 1009 | |
c906108c SS |
1010 | inf_debug (inf, "fetching threads"); |
1011 | if (err) | |
1012 | /* TASK must be dead. */ | |
1013 | { | |
1014 | task->dead = 1; | |
1015 | task = 0; | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | if (!task) | |
1020 | { | |
1021 | num_threads = 0; | |
1022 | inf_debug (inf, "no task"); | |
1023 | } | |
1024 | ||
1025 | { | |
942fd805 MK |
1026 | /* Make things normally linear. */ |
1027 | mach_msg_type_number_t search_start = 0; | |
c906108c SS |
1028 | /* Which thread in PROCS corresponds to each task thread, & the task. */ |
1029 | struct proc *matched[num_threads + 1]; | |
1030 | /* The last thread in INF->threads, so we can add to the end. */ | |
1031 | struct proc *last = 0; | |
0963b4bd | 1032 | /* The current thread we're considering. */ |
c906108c SS |
1033 | struct proc *thread = inf->threads; |
1034 | ||
4deab737 | 1035 | memset (matched, 0, sizeof (matched)); |
c906108c SS |
1036 | |
1037 | while (thread) | |
1038 | { | |
942fd805 | 1039 | mach_msg_type_number_t left; |
c906108c SS |
1040 | |
1041 | for (i = search_start, left = num_threads; left; i++, left--) | |
1042 | { | |
1043 | if (i >= num_threads) | |
c5aa993b | 1044 | i -= num_threads; /* I wrapped around. */ |
c906108c SS |
1045 | if (thread->port == threads[i]) |
1046 | /* We already know about this thread. */ | |
1047 | { | |
1048 | matched[i] = thread; | |
1049 | last = thread; | |
1050 | thread = thread->next; | |
1051 | search_start++; | |
1052 | break; | |
1053 | } | |
1054 | } | |
1055 | ||
c5aa993b | 1056 | if (!left) |
c906108c SS |
1057 | { |
1058 | proc_debug (thread, "died!"); | |
1059 | thread->port = MACH_PORT_NULL; | |
c5aa993b | 1060 | thread = _proc_free (thread); /* THREAD is dead. */ |
c4c50d37 DJ |
1061 | if (last) |
1062 | last->next = thread; | |
1063 | else | |
1064 | inf->threads = thread; | |
c906108c SS |
1065 | } |
1066 | } | |
1067 | ||
1068 | for (i = 0; i < num_threads; i++) | |
942fd805 MK |
1069 | { |
1070 | if (matched[i]) | |
1071 | /* Throw away the duplicate send right. */ | |
1072 | mach_port_deallocate (mach_task_self (), threads[i]); | |
1073 | else | |
1074 | /* THREADS[I] is a thread we don't know about yet! */ | |
1075 | { | |
617fd3b5 PA |
1076 | ptid_t ptid; |
1077 | ||
942fd805 | 1078 | thread = make_proc (inf, threads[i], next_thread_id++); |
c4c50d37 DJ |
1079 | if (last) |
1080 | last->next = thread; | |
1081 | else | |
1082 | inf->threads = thread; | |
942fd805 MK |
1083 | last = thread; |
1084 | proc_debug (thread, "new thread: %d", threads[i]); | |
617fd3b5 | 1085 | |
ca08a94c | 1086 | ptid = ptid_build (inf->pid, thread->tid, 0); |
617fd3b5 PA |
1087 | |
1088 | /* Tell GDB's generic thread code. */ | |
1089 | ||
1090 | if (ptid_equal (inferior_ptid, pid_to_ptid (inf->pid))) | |
1091 | /* This is the first time we're hearing about thread | |
1092 | ids, after a fork-child. */ | |
1093 | thread_change_ptid (inferior_ptid, ptid); | |
1094 | else if (inf->pending_execs != 0) | |
1095 | /* This is a shell thread. */ | |
1096 | add_thread_silent (ptid); | |
1097 | else | |
1098 | add_thread (ptid); | |
942fd805 MK |
1099 | } |
1100 | } | |
c906108c | 1101 | |
c5aa993b | 1102 | vm_deallocate (mach_task_self (), |
942fd805 | 1103 | (vm_address_t) threads, (num_threads * sizeof (thread_t))); |
c906108c SS |
1104 | } |
1105 | } | |
942fd805 | 1106 | |
c906108c SS |
1107 | \f |
1108 | /* Makes sure that INF's thread list is synced with the actual process. */ | |
39efb398 | 1109 | int |
c906108c SS |
1110 | inf_update_procs (struct inf *inf) |
1111 | { | |
c5aa993b | 1112 | if (!inf->task) |
c906108c | 1113 | return 0; |
c5aa993b | 1114 | if (!inf->threads_up_to_date) |
c906108c SS |
1115 | inf_validate_procs (inf); |
1116 | return !!inf->task; | |
1117 | } | |
1118 | ||
1119 | /* Sets the resume_sc of each thread in inf. That of RUN_THREAD is set to 0, | |
1120 | and others are set to their run_sc if RUN_OTHERS is true, and otherwise | |
1121 | their pause_sc. */ | |
39efb398 | 1122 | void |
c906108c SS |
1123 | inf_set_threads_resume_sc (struct inf *inf, |
1124 | struct proc *run_thread, int run_others) | |
1125 | { | |
1126 | struct proc *thread; | |
d8734c88 | 1127 | |
c906108c SS |
1128 | inf_update_procs (inf); |
1129 | for (thread = inf->threads; thread; thread = thread->next) | |
1130 | if (thread == run_thread) | |
1131 | thread->resume_sc = 0; | |
1132 | else if (run_others) | |
1133 | thread->resume_sc = thread->run_sc; | |
1134 | else | |
1135 | thread->resume_sc = thread->pause_sc; | |
1136 | } | |
942fd805 | 1137 | |
c906108c SS |
1138 | \f |
1139 | /* Cause INF to continue execution immediately; individual threads may still | |
1140 | be suspended (but their suspend counts will be updated). */ | |
39efb398 | 1141 | void |
c906108c SS |
1142 | inf_resume (struct inf *inf) |
1143 | { | |
1144 | struct proc *thread; | |
1145 | ||
1146 | inf_update_procs (inf); | |
1147 | ||
1148 | for (thread = inf->threads; thread; thread = thread->next) | |
1149 | thread->sc = thread->resume_sc; | |
1150 | ||
1151 | if (inf->task) | |
1152 | { | |
c5aa993b | 1153 | if (!inf->pending_execs) |
c906108c SS |
1154 | /* Try to make sure our task count is correct -- in the case where |
1155 | we're waiting for an exec though, things are too volatile, so just | |
1156 | assume things will be reasonable (which they usually will be). */ | |
1157 | inf_validate_task_sc (inf); | |
1158 | inf->task->sc = 0; | |
1159 | } | |
1160 | ||
1161 | inf_update_suspends (inf); | |
1162 | } | |
1163 | ||
1164 | /* Cause INF to stop execution immediately; individual threads may still | |
1165 | be running. */ | |
39efb398 | 1166 | void |
c906108c SS |
1167 | inf_suspend (struct inf *inf) |
1168 | { | |
1169 | struct proc *thread; | |
1170 | ||
1171 | inf_update_procs (inf); | |
1172 | ||
1173 | for (thread = inf->threads; thread; thread = thread->next) | |
1174 | thread->sc = thread->pause_sc; | |
1175 | ||
1176 | if (inf->task) | |
1177 | inf->task->sc = inf->pause_sc; | |
1178 | ||
1179 | inf_update_suspends (inf); | |
1180 | } | |
942fd805 | 1181 | |
c906108c | 1182 | \f |
942fd805 MK |
1183 | /* INF has one thread PROC that is in single-stepping mode. This |
1184 | function changes it to be PROC, changing any old step_thread to be | |
1185 | a normal one. A PROC of 0 clears any existing value. */ | |
c906108c SS |
1186 | void |
1187 | inf_set_step_thread (struct inf *inf, struct proc *thread) | |
1188 | { | |
bf62e5b4 | 1189 | gdb_assert (!thread || proc_is_thread (thread)); |
c906108c SS |
1190 | |
1191 | if (thread) | |
1192 | inf_debug (inf, "setting step thread: %d/%d", inf->pid, thread->tid); | |
1193 | else | |
1194 | inf_debug (inf, "clearing step thread"); | |
1195 | ||
1196 | if (inf->step_thread != thread) | |
1197 | { | |
1198 | if (inf->step_thread && inf->step_thread->port != MACH_PORT_NULL) | |
c5aa993b | 1199 | if (!proc_trace (inf->step_thread, 0)) |
c906108c SS |
1200 | return; |
1201 | if (thread && proc_trace (thread, 1)) | |
1202 | inf->step_thread = thread; | |
1203 | else | |
1204 | inf->step_thread = 0; | |
1205 | } | |
1206 | } | |
942fd805 | 1207 | |
c906108c SS |
1208 | \f |
1209 | /* Set up the thread resume_sc's so that only the signal thread is running | |
1210 | (plus whatever other thread are set to always run). Returns true if we | |
1211 | did so, or false if we can't find a signal thread. */ | |
39efb398 | 1212 | int |
c906108c SS |
1213 | inf_set_threads_resume_sc_for_signal_thread (struct inf *inf) |
1214 | { | |
1215 | if (inf->signal_thread) | |
1216 | { | |
1217 | inf_set_threads_resume_sc (inf, inf->signal_thread, 0); | |
1218 | return 1; | |
1219 | } | |
1220 | else | |
1221 | return 0; | |
1222 | } | |
1223 | ||
1224 | static void | |
1225 | inf_update_signal_thread (struct inf *inf) | |
1226 | { | |
1227 | /* XXX for now we assume that if there's a msgport, the 2nd thread is | |
1228 | the signal thread. */ | |
1229 | inf->signal_thread = inf->threads ? inf->threads->next : 0; | |
1230 | } | |
942fd805 | 1231 | |
c906108c SS |
1232 | \f |
1233 | /* Detachs from INF's inferior task, letting it run once again... */ | |
1234 | void | |
1235 | inf_detach (struct inf *inf) | |
1236 | { | |
1237 | struct proc *task = inf->task; | |
1238 | ||
1239 | inf_debug (inf, "detaching..."); | |
1240 | ||
1241 | inf_clear_wait (inf); | |
1242 | inf_set_step_thread (inf, 0); | |
1243 | ||
1244 | if (task) | |
1245 | { | |
1246 | struct proc *thread; | |
1247 | ||
cce74817 JM |
1248 | inf_validate_procinfo (inf); |
1249 | ||
c906108c SS |
1250 | inf_set_traced (inf, 0); |
1251 | if (inf->stopped) | |
cce74817 JM |
1252 | { |
1253 | if (inf->nomsg) | |
1254 | inf_continue (inf); | |
1255 | else | |
a493e3e2 | 1256 | inf_signal (inf, GDB_SIGNAL_0); |
cce74817 | 1257 | } |
c906108c SS |
1258 | |
1259 | proc_restore_exc_port (task); | |
1260 | task->sc = inf->detach_sc; | |
1261 | ||
1262 | for (thread = inf->threads; thread; thread = thread->next) | |
1263 | { | |
1264 | proc_restore_exc_port (thread); | |
1265 | thread->sc = thread->detach_sc; | |
1266 | } | |
1267 | ||
1268 | inf_update_suspends (inf); | |
1269 | } | |
1270 | ||
1271 | inf_cleanup (inf); | |
1272 | } | |
1273 | ||
942fd805 MK |
1274 | /* Attaches INF to the process with process id PID, returning it in a |
1275 | suspended state suitable for debugging. */ | |
c906108c SS |
1276 | void |
1277 | inf_attach (struct inf *inf, int pid) | |
1278 | { | |
1279 | inf_debug (inf, "attaching: %d", pid); | |
1280 | ||
1281 | if (inf->pid) | |
1282 | inf_detach (inf); | |
1283 | ||
1284 | inf_startup (inf, pid); | |
1285 | } | |
942fd805 | 1286 | |
c906108c | 1287 | \f |
0963b4bd | 1288 | /* Makes sure that we've got our exception ports entrenched in the process. */ |
c5aa993b JM |
1289 | void |
1290 | inf_steal_exc_ports (struct inf *inf) | |
c906108c SS |
1291 | { |
1292 | struct proc *thread; | |
1293 | ||
1294 | inf_debug (inf, "stealing exception ports"); | |
1295 | ||
0963b4bd | 1296 | inf_set_step_thread (inf, 0); /* The step thread is special. */ |
c906108c SS |
1297 | |
1298 | proc_steal_exc_port (inf->task, inf->event_port); | |
1299 | for (thread = inf->threads; thread; thread = thread->next) | |
1300 | proc_steal_exc_port (thread, MACH_PORT_NULL); | |
1301 | } | |
1302 | ||
1303 | /* Makes sure the process has its own exception ports. */ | |
c5aa993b JM |
1304 | void |
1305 | inf_restore_exc_ports (struct inf *inf) | |
c906108c SS |
1306 | { |
1307 | struct proc *thread; | |
1308 | ||
1309 | inf_debug (inf, "restoring exception ports"); | |
1310 | ||
0963b4bd | 1311 | inf_set_step_thread (inf, 0); /* The step thread is special. */ |
c906108c SS |
1312 | |
1313 | proc_restore_exc_port (inf->task); | |
1314 | for (thread = inf->threads; thread; thread = thread->next) | |
1315 | proc_restore_exc_port (thread); | |
1316 | } | |
942fd805 | 1317 | |
c906108c SS |
1318 | \f |
1319 | /* Deliver signal SIG to INF. If INF is stopped, delivering a signal, even | |
1320 | signal 0, will continue it. INF is assumed to be in a paused state, and | |
1321 | the resume_sc's of INF's threads may be affected. */ | |
1322 | void | |
2ea28649 | 1323 | inf_signal (struct inf *inf, enum gdb_signal sig) |
c906108c SS |
1324 | { |
1325 | error_t err = 0; | |
2ea28649 | 1326 | int host_sig = gdb_signal_to_host (sig); |
c906108c | 1327 | |
2ea28649 | 1328 | #define NAME gdb_signal_to_name (sig) |
c906108c SS |
1329 | |
1330 | if (host_sig >= _NSIG) | |
1331 | /* A mach exception. Exceptions are encoded in the signal space by | |
1332 | putting them after _NSIG; this assumes they're positive (and not | |
1333 | extremely large)! */ | |
1334 | { | |
1335 | struct inf_wait *w = &inf->wait; | |
d8734c88 | 1336 | |
c906108c SS |
1337 | if (w->status.kind == TARGET_WAITKIND_STOPPED |
1338 | && w->status.value.sig == sig | |
1339 | && w->thread && !w->thread->aborted) | |
1340 | /* We're passing through the last exception we received. This is | |
1341 | kind of bogus, because exceptions are per-thread whereas gdb | |
1342 | treats signals as per-process. We just forward the exception to | |
1343 | the correct handler, even it's not for the same thread as TID -- | |
1344 | i.e., we pretend it's global. */ | |
1345 | { | |
1346 | struct exc_state *e = &w->exc; | |
d8734c88 | 1347 | |
c906108c SS |
1348 | inf_debug (inf, "passing through exception:" |
1349 | " task = %d, thread = %d, exc = %d" | |
1350 | ", code = %d, subcode = %d", | |
1351 | w->thread->port, inf->task->port, | |
1352 | e->exception, e->code, e->subcode); | |
1353 | err = | |
1354 | exception_raise_request (e->handler, | |
1355 | e->reply, MACH_MSG_TYPE_MOVE_SEND_ONCE, | |
1356 | w->thread->port, inf->task->port, | |
1357 | e->exception, e->code, e->subcode); | |
1358 | } | |
1359 | else | |
8a3fe4f8 | 1360 | error (_("Can't forward spontaneous exception (%s)."), NAME); |
c906108c SS |
1361 | } |
1362 | else | |
1363 | /* A Unix signal. */ | |
c5aa993b JM |
1364 | if (inf->stopped) |
1365 | /* The process is stopped and expecting a signal. Just send off a | |
1366 | request and let it get handled when we resume everything. */ | |
1367 | { | |
1368 | inf_debug (inf, "sending %s to stopped process", NAME); | |
1369 | err = | |
1370 | INF_MSGPORT_RPC (inf, | |
1371 | msg_sig_post_untraced_request (msgport, | |
1372 | inf->event_port, | |
1373 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
1374 | host_sig, 0, | |
1375 | refport)); | |
1376 | if (!err) | |
1377 | /* Posting an untraced signal automatically continues it. | |
1378 | We clear this here rather than when we get the reply | |
1379 | because we'd rather assume it's not stopped when it | |
1380 | actually is, than the reverse. */ | |
1381 | inf->stopped = 0; | |
1382 | } | |
1383 | else | |
1384 | /* It's not expecting it. We have to let just the signal thread | |
1385 | run, and wait for it to get into a reasonable state before we | |
1386 | can continue the rest of the process. When we finally resume the | |
1387 | process the signal we request will be the very first thing that | |
0963b4bd | 1388 | happens. */ |
c5aa993b | 1389 | { |
942fd805 MK |
1390 | inf_debug (inf, "sending %s to unstopped process" |
1391 | " (so resuming signal thread)", NAME); | |
c5aa993b | 1392 | err = |
942fd805 MK |
1393 | INF_RESUME_MSGPORT_RPC (inf, |
1394 | msg_sig_post_untraced (msgport, host_sig, | |
1395 | 0, refport)); | |
c5aa993b | 1396 | } |
c906108c SS |
1397 | |
1398 | if (err == EIEIO) | |
0963b4bd | 1399 | /* Can't do too much... */ |
8a3fe4f8 | 1400 | warning (_("Can't deliver signal %s: No signal thread."), NAME); |
c906108c | 1401 | else if (err) |
8a3fe4f8 | 1402 | warning (_("Delivering signal %s: %s"), NAME, safe_strerror (err)); |
c906108c SS |
1403 | |
1404 | #undef NAME | |
1405 | } | |
942fd805 | 1406 | |
c906108c | 1407 | \f |
cce74817 JM |
1408 | /* Continue INF without delivering a signal. This is meant to be used |
1409 | when INF does not have a message port. */ | |
1410 | void | |
1411 | inf_continue (struct inf *inf) | |
1412 | { | |
1413 | process_t proc; | |
1414 | error_t err = proc_pid2proc (proc_server, inf->pid, &proc); | |
1415 | ||
c5aa993b | 1416 | if (!err) |
cce74817 JM |
1417 | { |
1418 | inf_debug (inf, "continuing process"); | |
1419 | ||
1420 | err = proc_mark_cont (proc); | |
c5aa993b | 1421 | if (!err) |
cce74817 JM |
1422 | { |
1423 | struct proc *thread; | |
1424 | ||
1425 | for (thread = inf->threads; thread; thread = thread->next) | |
1426 | thread_resume (thread->port); | |
c5aa993b | 1427 | |
cce74817 JM |
1428 | inf->stopped = 0; |
1429 | } | |
1430 | } | |
1431 | ||
1432 | if (err) | |
8a3fe4f8 | 1433 | warning (_("Can't continue process: %s"), safe_strerror (err)); |
cce74817 | 1434 | } |
942fd805 | 1435 | |
cce74817 | 1436 | \f |
c906108c | 1437 | /* The inferior used for all gdb target ops. */ |
c289427b | 1438 | struct inf *gnu_current_inf = 0; |
c906108c SS |
1439 | |
1440 | /* The inferior being waited for by gnu_wait. Since GDB is decidely not | |
1441 | multi-threaded, we don't bother to lock this. */ | |
1442 | struct inf *waiting_inf; | |
1443 | ||
0963b4bd | 1444 | /* Wait for something to happen in the inferior, returning what in STATUS. */ |
39f77062 | 1445 | static ptid_t |
117de6a9 | 1446 | gnu_wait (struct target_ops *ops, |
47608cb1 | 1447 | ptid_t ptid, struct target_waitstatus *status, int options) |
c906108c | 1448 | { |
c5aa993b JM |
1449 | struct msg |
1450 | { | |
1451 | mach_msg_header_t hdr; | |
1452 | mach_msg_type_t type; | |
1453 | int data[8000]; | |
942fd805 | 1454 | } msg; |
c906108c SS |
1455 | error_t err; |
1456 | struct proc *thread; | |
c289427b | 1457 | struct inf *inf = gnu_current_inf; |
c906108c | 1458 | |
942fd805 MK |
1459 | extern int exc_server (mach_msg_header_t *, mach_msg_header_t *); |
1460 | extern int msg_reply_server (mach_msg_header_t *, mach_msg_header_t *); | |
1461 | extern int notify_server (mach_msg_header_t *, mach_msg_header_t *); | |
1462 | extern int process_reply_server (mach_msg_header_t *, mach_msg_header_t *); | |
1463 | ||
bf62e5b4 | 1464 | gdb_assert (inf->task); |
c906108c SS |
1465 | |
1466 | if (!inf->threads && !inf->pending_execs) | |
1467 | /* No threads! Assume that maybe some outside agency is frobbing our | |
1468 | task, and really look for new threads. If we can't find any, just tell | |
1469 | the user to try again later. */ | |
1470 | { | |
1471 | inf_validate_procs (inf); | |
1472 | if (!inf->threads && !inf->task->dead) | |
8a3fe4f8 | 1473 | error (_("There are no threads; try again later.")); |
c906108c SS |
1474 | } |
1475 | ||
1476 | waiting_inf = inf; | |
1477 | ||
617fd3b5 | 1478 | inf_debug (inf, "waiting for: %s", target_pid_to_str (ptid)); |
c906108c | 1479 | |
c5aa993b | 1480 | rewait: |
c906108c SS |
1481 | if (proc_wait_pid != inf->pid && !inf->no_wait) |
1482 | /* Always get information on events from the proc server. */ | |
1483 | { | |
1484 | inf_debug (inf, "requesting wait on pid %d", inf->pid); | |
1485 | ||
1486 | if (proc_wait_pid) | |
1487 | /* The proc server is single-threaded, and only allows a single | |
0963b4bd | 1488 | outstanding wait request, so we have to cancel the previous one. */ |
c906108c SS |
1489 | { |
1490 | inf_debug (inf, "cancelling previous wait on pid %d", proc_wait_pid); | |
1491 | interrupt_operation (proc_server, 0); | |
1492 | } | |
1493 | ||
1494 | err = | |
1495 | proc_wait_request (proc_server, inf->event_port, inf->pid, WUNTRACED); | |
1496 | if (err) | |
8a3fe4f8 | 1497 | warning (_("wait request failed: %s"), safe_strerror (err)); |
c906108c SS |
1498 | else |
1499 | { | |
1500 | inf_debug (inf, "waits pending: %d", proc_waits_pending); | |
1501 | proc_wait_pid = inf->pid; | |
942fd805 MK |
1502 | /* Even if proc_waits_pending was > 0 before, we still won't |
1503 | get any other replies, because it was either from a | |
1504 | different INF, or a different process attached to INF -- | |
1505 | and the event port, which is the wait reply port, changes | |
0963b4bd | 1506 | when you switch processes. */ |
c906108c SS |
1507 | proc_waits_pending = 1; |
1508 | } | |
1509 | } | |
1510 | ||
1511 | inf_clear_wait (inf); | |
1512 | ||
1513 | /* What can happen? (1) Dead name notification; (2) Exceptions arrive; | |
1514 | (3) wait reply from the proc server. */ | |
1515 | ||
1516 | inf_debug (inf, "waiting for an event..."); | |
1517 | err = mach_msg (&msg.hdr, MACH_RCV_MSG | MACH_RCV_INTERRUPT, | |
1518 | 0, sizeof (struct msg), inf->event_port, | |
1519 | MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); | |
1520 | ||
1521 | /* Re-suspend the task. */ | |
1522 | inf_suspend (inf); | |
1523 | ||
1524 | if (!inf->task && inf->pending_execs) | |
1525 | /* When doing an exec, it's possible that the old task wasn't reused | |
1526 | (e.g., setuid execs). So if the task seems to have disappeared, | |
1527 | attempt to refetch it, as the pid should still be the same. */ | |
1528 | inf_set_pid (inf, inf->pid); | |
1529 | ||
1530 | if (err == EMACH_RCV_INTERRUPTED) | |
1531 | inf_debug (inf, "interrupted"); | |
1532 | else if (err) | |
8a3fe4f8 | 1533 | error (_("Couldn't wait for an event: %s"), safe_strerror (err)); |
c906108c SS |
1534 | else |
1535 | { | |
c5aa993b JM |
1536 | struct |
1537 | { | |
1538 | mach_msg_header_t hdr; | |
1539 | mach_msg_type_t err_type; | |
1540 | kern_return_t err; | |
1541 | char noise[200]; | |
1542 | } | |
1543 | reply; | |
c906108c SS |
1544 | |
1545 | inf_debug (inf, "event: msgid = %d", msg.hdr.msgh_id); | |
1546 | ||
1547 | /* Handle what we got. */ | |
c5aa993b JM |
1548 | if (!notify_server (&msg.hdr, &reply.hdr) |
1549 | && !exc_server (&msg.hdr, &reply.hdr) | |
1550 | && !process_reply_server (&msg.hdr, &reply.hdr) | |
1551 | && !msg_reply_server (&msg.hdr, &reply.hdr)) | |
c906108c | 1552 | /* Whatever it is, it's something strange. */ |
8a3fe4f8 | 1553 | error (_("Got a strange event, msg id = %d."), msg.hdr.msgh_id); |
c906108c SS |
1554 | |
1555 | if (reply.err) | |
8a3fe4f8 | 1556 | error (_("Handling event, msgid = %d: %s"), |
dc672865 | 1557 | msg.hdr.msgh_id, safe_strerror (reply.err)); |
c906108c SS |
1558 | } |
1559 | ||
1560 | if (inf->pending_execs) | |
1561 | /* We're waiting for the inferior to finish execing. */ | |
1562 | { | |
1563 | struct inf_wait *w = &inf->wait; | |
1564 | enum target_waitkind kind = w->status.kind; | |
1565 | ||
1566 | if (kind == TARGET_WAITKIND_SPURIOUS) | |
1567 | /* Since gdb is actually counting the number of times the inferior | |
1568 | stops, expecting one stop per exec, we only return major events | |
1569 | while execing. */ | |
1570 | { | |
1571 | w->suppress = 1; | |
1572 | inf_debug (inf, "pending_execs = %d, ignoring minor event", | |
1573 | inf->pending_execs); | |
1574 | } | |
1575 | else if (kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 | 1576 | && w->status.value.sig == GDB_SIGNAL_TRAP) |
c906108c SS |
1577 | /* Ah hah! A SIGTRAP from the inferior while starting up probably |
1578 | means we've succesfully completed an exec! */ | |
1579 | { | |
1580 | if (--inf->pending_execs == 0) | |
1581 | /* We're done! */ | |
1582 | { | |
0963b4bd MS |
1583 | #if 0 /* do we need this? */ |
1584 | prune_threads (1); /* Get rid of the old shell | |
1585 | threads. */ | |
1586 | renumber_threads (0); /* Give our threads reasonable | |
1587 | names. */ | |
c906108c SS |
1588 | #endif |
1589 | } | |
1590 | inf_debug (inf, "pending exec completed, pending_execs => %d", | |
1591 | inf->pending_execs); | |
1592 | } | |
1593 | else if (kind == TARGET_WAITKIND_STOPPED) | |
1594 | /* It's possible that this signal is because of a crashed process | |
1595 | being handled by the hurd crash server; in this case, the process | |
1596 | will have an extra task suspend, which we need to know about. | |
1597 | Since the code in inf_resume that normally checks for this is | |
1598 | disabled while INF->pending_execs, we do the check here instead. */ | |
1599 | inf_validate_task_sc (inf); | |
1600 | } | |
1601 | ||
1602 | if (inf->wait.suppress) | |
1603 | /* Some totally spurious event happened that we don't consider | |
1604 | worth returning to gdb. Just keep waiting. */ | |
1605 | { | |
1606 | inf_debug (inf, "suppressing return, rewaiting..."); | |
1607 | inf_resume (inf); | |
1608 | goto rewait; | |
1609 | } | |
1610 | ||
1611 | /* Pass back out our results. */ | |
98d346c3 | 1612 | memcpy (status, &inf->wait.status, sizeof (*status)); |
c906108c SS |
1613 | |
1614 | thread = inf->wait.thread; | |
1615 | if (thread) | |
ca08a94c | 1616 | ptid = ptid_build (inf->pid, thread->tid, 0); |
617fd3b5 PA |
1617 | else if (ptid_equal (ptid, minus_one_ptid)) |
1618 | thread = inf_tid_to_thread (inf, -1); | |
c906108c | 1619 | else |
ca08a94c | 1620 | thread = inf_tid_to_thread (inf, ptid_get_lwp (ptid)); |
c906108c SS |
1621 | |
1622 | if (!thread || thread->port == MACH_PORT_NULL) | |
942fd805 MK |
1623 | { |
1624 | /* TID is dead; try and find a new thread. */ | |
1625 | if (inf_update_procs (inf) && inf->threads) | |
ca08a94c | 1626 | ptid = ptid_build (inf->pid, inf->threads->tid, 0); /* The first |
0963b4bd MS |
1627 | available |
1628 | thread. */ | |
942fd805 | 1629 | else |
617fd3b5 | 1630 | ptid = inferior_ptid; /* let wait_for_inferior handle exit case */ |
942fd805 | 1631 | } |
c906108c | 1632 | |
617fd3b5 PA |
1633 | if (thread |
1634 | && !ptid_equal (ptid, minus_one_ptid) | |
1635 | && status->kind != TARGET_WAITKIND_SPURIOUS | |
c906108c | 1636 | && inf->pause_sc == 0 && thread->pause_sc == 0) |
942fd805 MK |
1637 | /* If something actually happened to THREAD, make sure we |
1638 | suspend it. */ | |
c906108c SS |
1639 | { |
1640 | thread->sc = 1; | |
1641 | inf_update_suspends (inf); | |
c5aa993b | 1642 | } |
c906108c | 1643 | |
617fd3b5 PA |
1644 | inf_debug (inf, "returning ptid = %s, status = %s (%d)", |
1645 | target_pid_to_str (ptid), | |
c906108c SS |
1646 | status->kind == TARGET_WAITKIND_EXITED ? "EXITED" |
1647 | : status->kind == TARGET_WAITKIND_STOPPED ? "STOPPED" | |
1648 | : status->kind == TARGET_WAITKIND_SIGNALLED ? "SIGNALLED" | |
1649 | : status->kind == TARGET_WAITKIND_LOADED ? "LOADED" | |
1650 | : status->kind == TARGET_WAITKIND_SPURIOUS ? "SPURIOUS" | |
1651 | : "?", | |
1652 | status->value.integer); | |
1653 | ||
617fd3b5 | 1654 | return ptid; |
c906108c | 1655 | } |
942fd805 | 1656 | |
c906108c SS |
1657 | \f |
1658 | /* The rpc handler called by exc_server. */ | |
1659 | error_t | |
1660 | S_exception_raise_request (mach_port_t port, mach_port_t reply_port, | |
1661 | thread_t thread_port, task_t task_port, | |
1662 | int exception, int code, int subcode) | |
1663 | { | |
1664 | struct inf *inf = waiting_inf; | |
1665 | struct proc *thread = inf_port_to_thread (inf, thread_port); | |
1666 | ||
1667 | inf_debug (waiting_inf, | |
1668 | "thread = %d, task = %d, exc = %d, code = %d, subcode = %d", | |
942fd805 | 1669 | thread_port, task_port, exception, code, subcode); |
c906108c SS |
1670 | |
1671 | if (!thread) | |
1672 | /* We don't know about thread? */ | |
1673 | { | |
1674 | inf_update_procs (inf); | |
1675 | thread = inf_port_to_thread (inf, thread_port); | |
1676 | if (!thread) | |
1677 | /* Give up, the generating thread is gone. */ | |
1678 | return 0; | |
1679 | } | |
1680 | ||
1681 | mach_port_deallocate (mach_task_self (), thread_port); | |
1682 | mach_port_deallocate (mach_task_self (), task_port); | |
1683 | ||
c5aa993b | 1684 | if (!thread->aborted) |
c906108c SS |
1685 | /* THREAD hasn't been aborted since this exception happened (abortion |
1686 | clears any exception state), so it must be real. */ | |
1687 | { | |
1688 | /* Store away the details; this will destroy any previous info. */ | |
1689 | inf->wait.thread = thread; | |
1690 | ||
1691 | inf->wait.status.kind = TARGET_WAITKIND_STOPPED; | |
1692 | ||
1693 | if (exception == EXC_BREAKPOINT) | |
1694 | /* GDB likes to get SIGTRAP for breakpoints. */ | |
1695 | { | |
a493e3e2 | 1696 | inf->wait.status.value.sig = GDB_SIGNAL_TRAP; |
c906108c SS |
1697 | mach_port_deallocate (mach_task_self (), reply_port); |
1698 | } | |
1699 | else | |
1700 | /* Record the exception so that we can forward it later. */ | |
1701 | { | |
1702 | if (thread->exc_port == port) | |
1703 | { | |
8e1a459b | 1704 | inf_debug (waiting_inf, "Handler is thread exception port <%d>", |
c906108c SS |
1705 | thread->saved_exc_port); |
1706 | inf->wait.exc.handler = thread->saved_exc_port; | |
1707 | } | |
1708 | else | |
1709 | { | |
8e1a459b | 1710 | inf_debug (waiting_inf, "Handler is task exception port <%d>", |
c906108c SS |
1711 | inf->task->saved_exc_port); |
1712 | inf->wait.exc.handler = inf->task->saved_exc_port; | |
bf62e5b4 | 1713 | gdb_assert (inf->task->exc_port == port); |
c906108c SS |
1714 | } |
1715 | if (inf->wait.exc.handler != MACH_PORT_NULL) | |
0963b4bd | 1716 | /* Add a reference to the exception handler. */ |
c906108c SS |
1717 | mach_port_mod_refs (mach_task_self (), |
1718 | inf->wait.exc.handler, MACH_PORT_RIGHT_SEND, | |
1719 | 1); | |
1720 | ||
1721 | inf->wait.exc.exception = exception; | |
1722 | inf->wait.exc.code = code; | |
1723 | inf->wait.exc.subcode = subcode; | |
1724 | inf->wait.exc.reply = reply_port; | |
1725 | ||
0963b4bd MS |
1726 | /* Exceptions are encoded in the signal space by putting |
1727 | them after _NSIG; this assumes they're positive (and not | |
1728 | extremely large)! */ | |
c906108c | 1729 | inf->wait.status.value.sig = |
2ea28649 | 1730 | gdb_signal_from_host (_NSIG + exception); |
c906108c SS |
1731 | } |
1732 | } | |
1733 | else | |
1734 | /* A supppressed exception, which ignore. */ | |
1735 | { | |
1736 | inf->wait.suppress = 1; | |
1737 | mach_port_deallocate (mach_task_self (), reply_port); | |
1738 | } | |
1739 | ||
1740 | return 0; | |
1741 | } | |
942fd805 | 1742 | |
c906108c SS |
1743 | \f |
1744 | /* Fill in INF's wait field after a task has died without giving us more | |
1745 | detailed information. */ | |
1746 | void | |
1747 | inf_task_died_status (struct inf *inf) | |
1748 | { | |
0963b4bd MS |
1749 | warning (_("Pid %d died with unknown exit status, using SIGKILL."), |
1750 | inf->pid); | |
c906108c | 1751 | inf->wait.status.kind = TARGET_WAITKIND_SIGNALLED; |
a493e3e2 | 1752 | inf->wait.status.value.sig = GDB_SIGNAL_KILL; |
c906108c SS |
1753 | } |
1754 | ||
1755 | /* Notify server routines. The only real one is dead name notification. */ | |
1756 | error_t | |
1757 | do_mach_notify_dead_name (mach_port_t notify, mach_port_t dead_port) | |
1758 | { | |
1759 | struct inf *inf = waiting_inf; | |
1760 | ||
1761 | inf_debug (waiting_inf, "port = %d", dead_port); | |
1762 | ||
1763 | if (inf->task && inf->task->port == dead_port) | |
1764 | { | |
1765 | proc_debug (inf->task, "is dead"); | |
1766 | inf->task->port = MACH_PORT_NULL; | |
1767 | if (proc_wait_pid == inf->pid) | |
1768 | /* We have a wait outstanding on the process, which will return more | |
1769 | detailed information, so delay until we get that. */ | |
1770 | inf->wait.suppress = 1; | |
1771 | else | |
1772 | /* We never waited for the process (maybe it wasn't a child), so just | |
1773 | pretend it got a SIGKILL. */ | |
1774 | inf_task_died_status (inf); | |
1775 | } | |
1776 | else | |
1777 | { | |
1778 | struct proc *thread = inf_port_to_thread (inf, dead_port); | |
d8734c88 | 1779 | |
c906108c SS |
1780 | if (thread) |
1781 | { | |
1782 | proc_debug (thread, "is dead"); | |
1783 | thread->port = MACH_PORT_NULL; | |
1784 | } | |
f90b2b1d JK |
1785 | |
1786 | if (inf->task->dead) | |
1787 | /* Since the task is dead, its threads are dying with it. */ | |
1788 | inf->wait.suppress = 1; | |
c906108c SS |
1789 | } |
1790 | ||
1791 | mach_port_deallocate (mach_task_self (), dead_port); | |
0963b4bd | 1792 | inf->threads_up_to_date = 0; /* Just in case. */ |
c906108c SS |
1793 | |
1794 | return 0; | |
1795 | } | |
942fd805 | 1796 | |
c906108c SS |
1797 | \f |
1798 | static error_t | |
1799 | ill_rpc (char *fun) | |
1800 | { | |
8a3fe4f8 | 1801 | warning (_("illegal rpc: %s"), fun); |
c906108c SS |
1802 | return 0; |
1803 | } | |
1804 | ||
1805 | error_t | |
1806 | do_mach_notify_no_senders (mach_port_t notify, mach_port_mscount_t count) | |
1807 | { | |
89396210 | 1808 | return ill_rpc ("do_mach_notify_no_senders"); |
c906108c SS |
1809 | } |
1810 | ||
1811 | error_t | |
1812 | do_mach_notify_port_deleted (mach_port_t notify, mach_port_t name) | |
1813 | { | |
89396210 | 1814 | return ill_rpc ("do_mach_notify_port_deleted"); |
c906108c SS |
1815 | } |
1816 | ||
1817 | error_t | |
1818 | do_mach_notify_msg_accepted (mach_port_t notify, mach_port_t name) | |
1819 | { | |
89396210 | 1820 | return ill_rpc ("do_mach_notify_msg_accepted"); |
c906108c SS |
1821 | } |
1822 | ||
1823 | error_t | |
1824 | do_mach_notify_port_destroyed (mach_port_t notify, mach_port_t name) | |
1825 | { | |
89396210 | 1826 | return ill_rpc ("do_mach_notify_port_destroyed"); |
c906108c SS |
1827 | } |
1828 | ||
1829 | error_t | |
1830 | do_mach_notify_send_once (mach_port_t notify) | |
1831 | { | |
89396210 | 1832 | return ill_rpc ("do_mach_notify_send_once"); |
c906108c | 1833 | } |
942fd805 | 1834 | |
c906108c SS |
1835 | \f |
1836 | /* Process_reply server routines. We only use process_wait_reply. */ | |
1837 | ||
1838 | error_t | |
1839 | S_proc_wait_reply (mach_port_t reply, error_t err, | |
1840 | int status, int sigcode, rusage_t rusage, pid_t pid) | |
1841 | { | |
1842 | struct inf *inf = waiting_inf; | |
1843 | ||
1844 | inf_debug (inf, "err = %s, pid = %d, status = 0x%x, sigcode = %d", | |
dc672865 | 1845 | err ? safe_strerror (err) : "0", pid, status, sigcode); |
c906108c SS |
1846 | |
1847 | if (err && proc_wait_pid && (!inf->task || !inf->task->port)) | |
1848 | /* Ack. The task has died, but the task-died notification code didn't | |
1849 | tell anyone because it thought a more detailed reply from the | |
1850 | procserver was forthcoming. However, we now learn that won't | |
1851 | happen... So we have to act like the task just died, and this time, | |
1852 | tell the world. */ | |
1853 | inf_task_died_status (inf); | |
1854 | ||
1855 | if (--proc_waits_pending == 0) | |
1856 | /* PROC_WAIT_PID represents the most recent wait. We will always get | |
1857 | replies in order because the proc server is single threaded. */ | |
1858 | proc_wait_pid = 0; | |
1859 | ||
1860 | inf_debug (inf, "waits pending now: %d", proc_waits_pending); | |
1861 | ||
1862 | if (err) | |
1863 | { | |
1864 | if (err != EINTR) | |
1865 | { | |
0963b4bd MS |
1866 | warning (_("Can't wait for pid %d: %s"), |
1867 | inf->pid, safe_strerror (err)); | |
c906108c SS |
1868 | inf->no_wait = 1; |
1869 | ||
1870 | /* Since we can't see the inferior's signals, don't trap them. */ | |
1871 | inf_set_traced (inf, 0); | |
1872 | } | |
1873 | } | |
1874 | else if (pid == inf->pid) | |
1875 | { | |
1876 | store_waitstatus (&inf->wait.status, status); | |
1877 | if (inf->wait.status.kind == TARGET_WAITKIND_STOPPED) | |
1878 | /* The process has sent us a signal, and stopped itself in a sane | |
1879 | state pending our actions. */ | |
1880 | { | |
1881 | inf_debug (inf, "process has stopped itself"); | |
1882 | inf->stopped = 1; | |
1883 | } | |
1884 | } | |
1885 | else | |
1886 | inf->wait.suppress = 1; /* Something odd happened. Ignore. */ | |
1887 | ||
1888 | return 0; | |
1889 | } | |
1890 | ||
1891 | error_t | |
1892 | S_proc_setmsgport_reply (mach_port_t reply, error_t err, | |
1893 | mach_port_t old_msg_port) | |
1894 | { | |
89396210 | 1895 | return ill_rpc ("S_proc_setmsgport_reply"); |
c906108c SS |
1896 | } |
1897 | ||
1898 | error_t | |
1899 | S_proc_getmsgport_reply (mach_port_t reply, error_t err, mach_port_t msg_port) | |
1900 | { | |
89396210 | 1901 | return ill_rpc ("S_proc_getmsgport_reply"); |
c906108c | 1902 | } |
942fd805 | 1903 | |
c906108c SS |
1904 | \f |
1905 | /* Msg_reply server routines. We only use msg_sig_post_untraced_reply. */ | |
1906 | ||
1907 | error_t | |
1908 | S_msg_sig_post_untraced_reply (mach_port_t reply, error_t err) | |
1909 | { | |
1910 | struct inf *inf = waiting_inf; | |
1911 | ||
1912 | if (err == EBUSY) | |
1913 | /* EBUSY is what we get when the crash server has grabbed control of the | |
1914 | process and doesn't like what signal we tried to send it. Just act | |
1915 | like the process stopped (using a signal of 0 should mean that the | |
1916 | *next* time the user continues, it will pass signal 0, which the crash | |
1917 | server should like). */ | |
1918 | { | |
1919 | inf->wait.status.kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 1920 | inf->wait.status.value.sig = GDB_SIGNAL_0; |
c906108c SS |
1921 | } |
1922 | else if (err) | |
8a3fe4f8 | 1923 | warning (_("Signal delivery failed: %s"), safe_strerror (err)); |
c906108c SS |
1924 | |
1925 | if (err) | |
1926 | /* We only get this reply when we've posted a signal to a process which we | |
1927 | thought was stopped, and which we expected to continue after the signal. | |
1928 | Given that the signal has failed for some reason, it's reasonable to | |
1929 | assume it's still stopped. */ | |
1930 | inf->stopped = 1; | |
1931 | else | |
1932 | inf->wait.suppress = 1; | |
1933 | ||
1934 | return 0; | |
1935 | } | |
1936 | ||
1937 | error_t | |
1938 | S_msg_sig_post_reply (mach_port_t reply, error_t err) | |
1939 | { | |
89396210 | 1940 | return ill_rpc ("S_msg_sig_post_reply"); |
c906108c | 1941 | } |
942fd805 | 1942 | |
c906108c SS |
1943 | \f |
1944 | /* Returns the number of messages queued for the receive right PORT. */ | |
1945 | static mach_port_msgcount_t | |
1946 | port_msgs_queued (mach_port_t port) | |
1947 | { | |
1948 | struct mach_port_status status; | |
1949 | error_t err = | |
d8734c88 | 1950 | mach_port_get_receive_status (mach_task_self (), port, &status); |
c906108c SS |
1951 | |
1952 | if (err) | |
1953 | return 0; | |
1954 | else | |
1955 | return status.mps_msgcount; | |
1956 | } | |
942fd805 | 1957 | |
c906108c SS |
1958 | \f |
1959 | /* Resume execution of the inferior process. | |
1960 | ||
1961 | If STEP is nonzero, single-step it. | |
1962 | If SIGNAL is nonzero, give it that signal. | |
1963 | ||
1964 | TID STEP: | |
1965 | -1 true Single step the current thread allowing other threads to run. | |
1966 | -1 false Continue the current thread allowing other threads to run. | |
1967 | X true Single step the given thread, don't allow any others to run. | |
1968 | X false Continue the given thread, do not allow any others to run. | |
1969 | (Where X, of course, is anything except -1) | |
1970 | ||
1971 | Note that a resume may not `take' if there are pending exceptions/&c | |
1972 | still unprocessed from the last resume we did (any given resume may result | |
0963b4bd MS |
1973 | in multiple events returned by wait). */ |
1974 | ||
c906108c | 1975 | static void |
28439f5e | 1976 | gnu_resume (struct target_ops *ops, |
2ea28649 | 1977 | ptid_t ptid, int step, enum gdb_signal sig) |
c906108c SS |
1978 | { |
1979 | struct proc *step_thread = 0; | |
617fd3b5 | 1980 | int resume_all; |
c289427b | 1981 | struct inf *inf = gnu_current_inf; |
c906108c | 1982 | |
617fd3b5 PA |
1983 | inf_debug (inf, "ptid = %s, step = %d, sig = %d", |
1984 | target_pid_to_str (ptid), step, sig); | |
c906108c | 1985 | |
cce74817 | 1986 | inf_validate_procinfo (inf); |
c5aa993b | 1987 | |
a493e3e2 | 1988 | if (sig != GDB_SIGNAL_0 || inf->stopped) |
cce74817 | 1989 | { |
a493e3e2 | 1990 | if (sig == GDB_SIGNAL_0 && inf->nomsg) |
cce74817 JM |
1991 | inf_continue (inf); |
1992 | else | |
1993 | inf_signal (inf, sig); | |
1994 | } | |
c906108c SS |
1995 | else if (inf->wait.exc.reply != MACH_PORT_NULL) |
1996 | /* We received an exception to which we have chosen not to forward, so | |
1997 | abort the faulting thread, which will perhaps retake it. */ | |
1998 | { | |
1999 | proc_abort (inf->wait.thread, 1); | |
8a3fe4f8 | 2000 | warning (_("Aborting %s with unforwarded exception %s."), |
c906108c | 2001 | proc_string (inf->wait.thread), |
2ea28649 | 2002 | gdb_signal_to_name (inf->wait.status.value.sig)); |
c906108c SS |
2003 | } |
2004 | ||
2005 | if (port_msgs_queued (inf->event_port)) | |
2006 | /* If there are still messages in our event queue, don't bother resuming | |
0963b4bd | 2007 | the process, as we're just going to stop it right away anyway. */ |
c906108c SS |
2008 | return; |
2009 | ||
2010 | inf_update_procs (inf); | |
2011 | ||
617fd3b5 PA |
2012 | /* A specific PTID means `step only this process id'. */ |
2013 | resume_all = ptid_equal (ptid, minus_one_ptid); | |
2014 | ||
2015 | if (resume_all) | |
c906108c SS |
2016 | /* Allow all threads to run, except perhaps single-stepping one. */ |
2017 | { | |
dfd4cc63 LM |
2018 | inf_debug (inf, "running all threads; tid = %d", |
2019 | ptid_get_pid (inferior_ptid)); | |
0963b4bd | 2020 | ptid = inferior_ptid; /* What to step. */ |
c906108c SS |
2021 | inf_set_threads_resume_sc (inf, 0, 1); |
2022 | } | |
2023 | else | |
2024 | /* Just allow a single thread to run. */ | |
2025 | { | |
ca08a94c | 2026 | struct proc *thread = inf_tid_to_thread (inf, ptid_get_lwp (ptid)); |
d8734c88 | 2027 | |
c5aa993b | 2028 | if (!thread) |
617fd3b5 PA |
2029 | error (_("Can't run single thread id %s: no such thread!"), |
2030 | target_pid_to_str (ptid)); | |
2031 | inf_debug (inf, "running one thread: %s", target_pid_to_str (ptid)); | |
c906108c SS |
2032 | inf_set_threads_resume_sc (inf, thread, 0); |
2033 | } | |
2034 | ||
2035 | if (step) | |
2036 | { | |
ca08a94c | 2037 | step_thread = inf_tid_to_thread (inf, ptid_get_lwp (ptid)); |
c5aa993b | 2038 | if (!step_thread) |
617fd3b5 PA |
2039 | warning (_("Can't step thread id %s: no such thread."), |
2040 | target_pid_to_str (ptid)); | |
c906108c | 2041 | else |
617fd3b5 | 2042 | inf_debug (inf, "stepping thread: %s", target_pid_to_str (ptid)); |
c906108c SS |
2043 | } |
2044 | if (step_thread != inf->step_thread) | |
2045 | inf_set_step_thread (inf, step_thread); | |
2046 | ||
2047 | inf_debug (inf, "here we go..."); | |
2048 | inf_resume (inf); | |
2049 | } | |
942fd805 | 2050 | |
c906108c SS |
2051 | \f |
2052 | static void | |
7d85a9c0 | 2053 | gnu_kill_inferior (struct target_ops *ops) |
c906108c | 2054 | { |
c289427b | 2055 | struct proc *task = gnu_current_inf->task; |
d8734c88 | 2056 | |
c906108c SS |
2057 | if (task) |
2058 | { | |
2059 | proc_debug (task, "terminating..."); | |
2060 | task_terminate (task->port); | |
c289427b | 2061 | inf_set_pid (gnu_current_inf, -1); |
c906108c SS |
2062 | } |
2063 | target_mourn_inferior (); | |
2064 | } | |
2065 | ||
2066 | /* Clean up after the inferior dies. */ | |
c906108c | 2067 | static void |
136d6dae | 2068 | gnu_mourn_inferior (struct target_ops *ops) |
c906108c | 2069 | { |
c289427b PA |
2070 | inf_debug (gnu_current_inf, "rip"); |
2071 | inf_detach (gnu_current_inf); | |
b4d1e8c7 | 2072 | unpush_target (ops); |
c906108c SS |
2073 | generic_mourn_inferior (); |
2074 | } | |
942fd805 | 2075 | |
c906108c SS |
2076 | \f |
2077 | /* Fork an inferior process, and start debugging it. */ | |
2078 | ||
2079 | /* Set INFERIOR_PID to the first thread available in the child, if any. */ | |
2080 | static int | |
fba45db2 | 2081 | inf_pick_first_thread (void) |
c906108c | 2082 | { |
c289427b | 2083 | if (gnu_current_inf->task && gnu_current_inf->threads) |
c906108c | 2084 | /* The first thread. */ |
c289427b | 2085 | return gnu_current_inf->threads->tid; |
c906108c SS |
2086 | else |
2087 | /* What may be the next thread. */ | |
2088 | return next_thread_id; | |
2089 | } | |
2090 | ||
2091 | static struct inf * | |
fba45db2 | 2092 | cur_inf (void) |
c906108c | 2093 | { |
c289427b PA |
2094 | if (!gnu_current_inf) |
2095 | gnu_current_inf = make_inf (); | |
2096 | return gnu_current_inf; | |
c906108c SS |
2097 | } |
2098 | ||
2099 | static void | |
136d6dae VP |
2100 | gnu_create_inferior (struct target_ops *ops, |
2101 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 2102 | int from_tty) |
c906108c SS |
2103 | { |
2104 | struct inf *inf = cur_inf (); | |
b4d1e8c7 | 2105 | int pid; |
c906108c SS |
2106 | |
2107 | void trace_me () | |
c5aa993b JM |
2108 | { |
2109 | /* We're in the child; make this process stop as soon as it execs. */ | |
2110 | inf_debug (inf, "tracing self"); | |
2111 | if (ptrace (PTRACE_TRACEME) != 0) | |
8a3fe4f8 | 2112 | error (_("ptrace (PTRACE_TRACEME) failed!")); |
c5aa993b | 2113 | } |
c906108c | 2114 | |
b4d1e8c7 | 2115 | inf_debug (inf, "creating inferior"); |
c906108c | 2116 | |
e69860f1 TG |
2117 | pid = fork_inferior (exec_file, allargs, env, trace_me, |
2118 | NULL, NULL, NULL, NULL); | |
c906108c | 2119 | |
b4d1e8c7 PA |
2120 | /* Attach to the now stopped child, which is actually a shell... */ |
2121 | inf_debug (inf, "attaching to child: %d", pid); | |
c906108c | 2122 | |
b4d1e8c7 | 2123 | inf_attach (inf, pid); |
617fd3b5 | 2124 | |
b4d1e8c7 | 2125 | push_target (ops); |
c906108c | 2126 | |
b4d1e8c7 PA |
2127 | inf->pending_execs = 2; |
2128 | inf->nomsg = 1; | |
2129 | inf->traced = 1; | |
c906108c | 2130 | |
b4d1e8c7 | 2131 | /* Now let the child run again, knowing that it will stop |
0963b4bd | 2132 | immediately because of the ptrace. */ |
b4d1e8c7 PA |
2133 | inf_resume (inf); |
2134 | ||
2135 | /* We now have thread info. */ | |
2136 | thread_change_ptid (inferior_ptid, | |
ca08a94c | 2137 | ptid_build (inf->pid, inf_pick_first_thread (), 0)); |
c906108c | 2138 | |
b4d1e8c7 | 2139 | startup_inferior (inf->pending_execs); |
c906108c | 2140 | |
cce74817 | 2141 | inf_validate_procinfo (inf); |
c906108c SS |
2142 | inf_update_signal_thread (inf); |
2143 | inf_set_traced (inf, inf->want_signals); | |
2144 | ||
2145 | /* Execing the process will have trashed our exception ports; steal them | |
2146 | back (or make sure they're restored if the user wants that). */ | |
2147 | if (inf->want_exceptions) | |
2148 | inf_steal_exc_ports (inf); | |
2149 | else | |
2150 | inf_restore_exc_ports (inf); | |
c906108c SS |
2151 | } |
2152 | ||
c906108c | 2153 | \f |
c906108c SS |
2154 | /* Attach to process PID, then initialize for debugging it |
2155 | and wait for the trace-trap that results from attaching. */ | |
2156 | static void | |
136d6dae | 2157 | gnu_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
2158 | { |
2159 | int pid; | |
2160 | char *exec_file; | |
2161 | struct inf *inf = cur_inf (); | |
181e7f93 | 2162 | struct inferior *inferior; |
c906108c | 2163 | |
74164c56 | 2164 | pid = parse_pid_to_attach (args); |
c906108c | 2165 | |
74164c56 | 2166 | if (pid == getpid ()) /* Trying to masturbate? */ |
8a3fe4f8 | 2167 | error (_("I refuse to debug myself!")); |
c906108c SS |
2168 | |
2169 | if (from_tty) | |
2170 | { | |
2171 | exec_file = (char *) get_exec_file (0); | |
2172 | ||
2173 | if (exec_file) | |
2174 | printf_unfiltered ("Attaching to program `%s', pid %d\n", | |
2175 | exec_file, pid); | |
2176 | else | |
2177 | printf_unfiltered ("Attaching to pid %d\n", pid); | |
2178 | ||
2179 | gdb_flush (gdb_stdout); | |
2180 | } | |
2181 | ||
2182 | inf_debug (inf, "attaching to pid: %d", pid); | |
2183 | ||
2184 | inf_attach (inf, pid); | |
a9ab7422 | 2185 | |
b4d1e8c7 | 2186 | push_target (ops); |
a9ab7422 | 2187 | |
6c95b8df PA |
2188 | inferior = current_inferior (); |
2189 | inferior_appeared (inferior, pid); | |
181e7f93 | 2190 | inferior->attach_flag = 1; |
7f9f62ba | 2191 | |
c906108c SS |
2192 | inf_update_procs (inf); |
2193 | ||
ca08a94c | 2194 | inferior_ptid = ptid_build (pid, inf_pick_first_thread (), 0); |
c906108c | 2195 | |
b83266a0 SS |
2196 | /* We have to initialize the terminal settings now, since the code |
2197 | below might try to restore them. */ | |
2198 | target_terminal_init (); | |
c5aa993b | 2199 | |
c906108c SS |
2200 | /* If the process was stopped before we attached, make it continue the next |
2201 | time the user does a continue. */ | |
cce74817 JM |
2202 | inf_validate_procinfo (inf); |
2203 | ||
2204 | inf_update_signal_thread (inf); | |
2205 | inf_set_traced (inf, inf->want_signals); | |
c906108c | 2206 | |
0963b4bd MS |
2207 | #if 0 /* Do we need this? */ |
2208 | renumber_threads (0); /* Give our threads reasonable names. */ | |
c906108c SS |
2209 | #endif |
2210 | } | |
942fd805 | 2211 | |
c906108c SS |
2212 | \f |
2213 | /* Take a program previously attached to and detaches it. | |
2214 | The program resumes execution and will no longer stop | |
2215 | on signals, etc. We'd better not have left any breakpoints | |
2216 | in the program or it'll die when it hits one. For this | |
2217 | to work, it may be necessary for the process to have been | |
2218 | previously attached. It *might* work if the program was | |
2219 | started via fork. */ | |
2220 | static void | |
52554a0e | 2221 | gnu_detach (struct target_ops *ops, const char *args, int from_tty) |
c906108c | 2222 | { |
7f9f62ba PA |
2223 | int pid; |
2224 | ||
c906108c SS |
2225 | if (from_tty) |
2226 | { | |
2227 | char *exec_file = get_exec_file (0); | |
d8734c88 | 2228 | |
c906108c SS |
2229 | if (exec_file) |
2230 | printf_unfiltered ("Detaching from program `%s' pid %d\n", | |
c289427b | 2231 | exec_file, gnu_current_inf->pid); |
c906108c | 2232 | else |
c289427b | 2233 | printf_unfiltered ("Detaching from pid %d\n", gnu_current_inf->pid); |
c906108c SS |
2234 | gdb_flush (gdb_stdout); |
2235 | } | |
c5aa993b | 2236 | |
c289427b | 2237 | pid = gnu_current_inf->pid; |
7f9f62ba | 2238 | |
c289427b | 2239 | inf_detach (gnu_current_inf); |
c906108c | 2240 | |
39f77062 | 2241 | inferior_ptid = null_ptid; |
7f9f62ba | 2242 | detach_inferior (pid); |
c906108c | 2243 | |
0963b4bd | 2244 | unpush_target (ops); /* Pop out of handling an inferior. */ |
c906108c | 2245 | } |
942fd805 | 2246 | \f |
c906108c | 2247 | static void |
fba45db2 | 2248 | gnu_terminal_init_inferior (void) |
c906108c | 2249 | { |
c289427b PA |
2250 | gdb_assert (gnu_current_inf); |
2251 | terminal_init_inferior_with_pgrp (gnu_current_inf->pid); | |
c906108c SS |
2252 | } |
2253 | ||
c906108c | 2254 | static void |
f9c72d52 | 2255 | gnu_stop (ptid_t ptid) |
c906108c | 2256 | { |
8a3fe4f8 | 2257 | error (_("to_stop target function not implemented")); |
c906108c SS |
2258 | } |
2259 | ||
c906108c | 2260 | static int |
28439f5e | 2261 | gnu_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 2262 | { |
c289427b PA |
2263 | inf_update_procs (gnu_current_inf); |
2264 | return !!inf_tid_to_thread (gnu_current_inf, | |
ca08a94c | 2265 | ptid_get_lwp (ptid)); |
c906108c | 2266 | } |
942fd805 | 2267 | |
c906108c | 2268 | \f |
942fd805 MK |
2269 | /* Read inferior task's LEN bytes from ADDR and copy it to MYADDR in |
2270 | gdb's address space. Return 0 on failure; number of bytes read | |
2271 | otherwise. */ | |
9b3f3ee6 TS |
2272 | static int |
2273 | gnu_read_inferior (task_t task, CORE_ADDR addr, gdb_byte *myaddr, int length) | |
c906108c SS |
2274 | { |
2275 | error_t err; | |
2276 | vm_address_t low_address = (vm_address_t) trunc_page (addr); | |
2277 | vm_size_t aligned_length = | |
c5aa993b JM |
2278 | (vm_size_t) round_page (addr + length) - low_address; |
2279 | pointer_t copied; | |
2280 | int copy_count; | |
c906108c | 2281 | |
0963b4bd | 2282 | /* Get memory from inferior with page aligned addresses. */ |
c906108c SS |
2283 | err = vm_read (task, low_address, aligned_length, &copied, ©_count); |
2284 | if (err) | |
2285 | return 0; | |
2286 | ||
0963b4bd MS |
2287 | err = hurd_safe_copyin (myaddr, (void *) (addr - low_address + copied), |
2288 | length); | |
c906108c SS |
2289 | if (err) |
2290 | { | |
8a3fe4f8 | 2291 | warning (_("Read from inferior faulted: %s"), safe_strerror (err)); |
c906108c SS |
2292 | length = 0; |
2293 | } | |
2294 | ||
2295 | err = vm_deallocate (mach_task_self (), copied, copy_count); | |
2296 | if (err) | |
0963b4bd MS |
2297 | warning (_("gnu_read_inferior vm_deallocate failed: %s"), |
2298 | safe_strerror (err)); | |
c906108c SS |
2299 | |
2300 | return length; | |
2301 | } | |
2302 | ||
2303 | #define CHK_GOTO_OUT(str,ret) \ | |
2304 | do if (ret != KERN_SUCCESS) { errstr = #str; goto out; } while(0) | |
2305 | ||
c5aa993b JM |
2306 | struct vm_region_list |
2307 | { | |
c906108c | 2308 | struct vm_region_list *next; |
c5aa993b JM |
2309 | vm_prot_t protection; |
2310 | vm_address_t start; | |
2311 | vm_size_t length; | |
c906108c SS |
2312 | }; |
2313 | ||
c5aa993b | 2314 | struct obstack region_obstack; |
c906108c | 2315 | |
942fd805 MK |
2316 | /* Write gdb's LEN bytes from MYADDR and copy it to ADDR in inferior |
2317 | task's address space. */ | |
9b3f3ee6 TS |
2318 | static int |
2319 | gnu_write_inferior (task_t task, CORE_ADDR addr, | |
2320 | const gdb_byte *myaddr, int length) | |
c906108c SS |
2321 | { |
2322 | error_t err = 0; | |
c5aa993b JM |
2323 | vm_address_t low_address = (vm_address_t) trunc_page (addr); |
2324 | vm_size_t aligned_length = | |
2325 | (vm_size_t) round_page (addr + length) - low_address; | |
2326 | pointer_t copied; | |
2327 | int copy_count; | |
2328 | int deallocate = 0; | |
c906108c | 2329 | |
c5aa993b | 2330 | char *errstr = "Bug in gnu_write_inferior"; |
c906108c SS |
2331 | |
2332 | struct vm_region_list *region_element; | |
c5aa993b | 2333 | struct vm_region_list *region_head = (struct vm_region_list *) NULL; |
c906108c | 2334 | |
0963b4bd | 2335 | /* Get memory from inferior with page aligned addresses. */ |
c906108c SS |
2336 | err = vm_read (task, |
2337 | low_address, | |
2338 | aligned_length, | |
2339 | &copied, | |
2340 | ©_count); | |
2341 | CHK_GOTO_OUT ("gnu_write_inferior vm_read failed", err); | |
2342 | ||
2343 | deallocate++; | |
2344 | ||
96ffcb62 | 2345 | err = hurd_safe_copyout ((void *) (addr - low_address + copied), |
942fd805 | 2346 | myaddr, length); |
c906108c SS |
2347 | CHK_GOTO_OUT ("Write to inferior faulted", err); |
2348 | ||
2349 | obstack_init (®ion_obstack); | |
2350 | ||
2351 | /* Do writes atomically. | |
942fd805 | 2352 | First check for holes and unwritable memory. */ |
c906108c | 2353 | { |
c5aa993b JM |
2354 | vm_size_t remaining_length = aligned_length; |
2355 | vm_address_t region_address = low_address; | |
c906108c SS |
2356 | |
2357 | struct vm_region_list *scan; | |
2358 | ||
c5aa993b | 2359 | while (region_address < low_address + aligned_length) |
c906108c SS |
2360 | { |
2361 | vm_prot_t protection; | |
2362 | vm_prot_t max_protection; | |
2363 | vm_inherit_t inheritance; | |
2364 | boolean_t shared; | |
2365 | mach_port_t object_name; | |
2366 | vm_offset_t offset; | |
c5aa993b JM |
2367 | vm_size_t region_length = remaining_length; |
2368 | vm_address_t old_address = region_address; | |
2369 | ||
c906108c SS |
2370 | err = vm_region (task, |
2371 | ®ion_address, | |
2372 | ®ion_length, | |
2373 | &protection, | |
2374 | &max_protection, | |
2375 | &inheritance, | |
2376 | &shared, | |
2377 | &object_name, | |
2378 | &offset); | |
2379 | CHK_GOTO_OUT ("vm_region failed", err); | |
2380 | ||
0963b4bd | 2381 | /* Check for holes in memory. */ |
c906108c SS |
2382 | if (old_address != region_address) |
2383 | { | |
8a3fe4f8 | 2384 | warning (_("No memory at 0x%x. Nothing written"), |
c906108c SS |
2385 | old_address); |
2386 | err = KERN_SUCCESS; | |
2387 | length = 0; | |
2388 | goto out; | |
2389 | } | |
2390 | ||
2391 | if (!(max_protection & VM_PROT_WRITE)) | |
2392 | { | |
0963b4bd MS |
2393 | warning (_("Memory at address 0x%x is unwritable. " |
2394 | "Nothing written"), | |
c906108c SS |
2395 | old_address); |
2396 | err = KERN_SUCCESS; | |
2397 | length = 0; | |
2398 | goto out; | |
2399 | } | |
2400 | ||
0963b4bd | 2401 | /* Chain the regions for later use. */ |
c5aa993b | 2402 | region_element = |
c906108c | 2403 | (struct vm_region_list *) |
c5aa993b JM |
2404 | obstack_alloc (®ion_obstack, sizeof (struct vm_region_list)); |
2405 | ||
c906108c | 2406 | region_element->protection = protection; |
c5aa993b JM |
2407 | region_element->start = region_address; |
2408 | region_element->length = region_length; | |
c906108c | 2409 | |
0963b4bd | 2410 | /* Chain the regions along with protections. */ |
c906108c | 2411 | region_element->next = region_head; |
c5aa993b JM |
2412 | region_head = region_element; |
2413 | ||
c906108c SS |
2414 | region_address += region_length; |
2415 | remaining_length = remaining_length - region_length; | |
2416 | } | |
2417 | ||
2418 | /* If things fail after this, we give up. | |
942fd805 | 2419 | Somebody is messing up inferior_task's mappings. */ |
c5aa993b | 2420 | |
0963b4bd | 2421 | /* Enable writes to the chained vm regions. */ |
c906108c SS |
2422 | for (scan = region_head; scan; scan = scan->next) |
2423 | { | |
c906108c SS |
2424 | if (!(scan->protection & VM_PROT_WRITE)) |
2425 | { | |
2426 | err = vm_protect (task, | |
2427 | scan->start, | |
2428 | scan->length, | |
2429 | FALSE, | |
2430 | scan->protection | VM_PROT_WRITE); | |
2431 | CHK_GOTO_OUT ("vm_protect: enable write failed", err); | |
2432 | } | |
2433 | } | |
2434 | ||
2435 | err = vm_write (task, | |
2436 | low_address, | |
2437 | copied, | |
2438 | aligned_length); | |
2439 | CHK_GOTO_OUT ("vm_write failed", err); | |
c5aa993b | 2440 | |
0963b4bd | 2441 | /* Set up the original region protections, if they were changed. */ |
c906108c SS |
2442 | for (scan = region_head; scan; scan = scan->next) |
2443 | { | |
c906108c SS |
2444 | if (!(scan->protection & VM_PROT_WRITE)) |
2445 | { | |
2446 | err = vm_protect (task, | |
2447 | scan->start, | |
2448 | scan->length, | |
2449 | FALSE, | |
2450 | scan->protection); | |
2451 | CHK_GOTO_OUT ("vm_protect: enable write failed", err); | |
2452 | } | |
2453 | } | |
2454 | } | |
2455 | ||
c5aa993b | 2456 | out: |
c906108c SS |
2457 | if (deallocate) |
2458 | { | |
2459 | obstack_free (®ion_obstack, 0); | |
c5aa993b | 2460 | |
c906108c SS |
2461 | (void) vm_deallocate (mach_task_self (), |
2462 | copied, | |
2463 | copy_count); | |
2464 | } | |
2465 | ||
2466 | if (err != KERN_SUCCESS) | |
2467 | { | |
8a3fe4f8 | 2468 | warning (_("%s: %s"), errstr, mach_error_string (err)); |
c906108c SS |
2469 | return 0; |
2470 | } | |
2471 | ||
2472 | return length; | |
2473 | } | |
942fd805 | 2474 | |
c906108c | 2475 | \f |
9b3f3ee6 TS |
2476 | |
2477 | /* Helper for gnu_xfer_partial that handles memory transfers. */ | |
2478 | ||
2479 | static LONGEST | |
2480 | gnu_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, | |
2481 | CORE_ADDR memaddr, LONGEST len) | |
c906108c | 2482 | { |
c289427b PA |
2483 | task_t task = (gnu_current_inf |
2484 | ? (gnu_current_inf->task | |
2485 | ? gnu_current_inf->task->port : 0) | |
942fd805 | 2486 | : 0); |
9b3f3ee6 | 2487 | int res; |
c906108c SS |
2488 | |
2489 | if (task == MACH_PORT_NULL) | |
9b3f3ee6 TS |
2490 | return TARGET_XFER_E_IO; |
2491 | ||
2492 | if (writebuf != NULL) | |
2493 | { | |
2494 | inf_debug (gnu_current_inf, "writing %s[%s] <-- %s", | |
2495 | paddress (target_gdbarch (), memaddr), plongest (len), | |
2496 | host_address_to_string (writebuf)); | |
2497 | res = gnu_write_inferior (task, memaddr, writebuf, len); | |
2498 | } | |
c906108c SS |
2499 | else |
2500 | { | |
9b3f3ee6 TS |
2501 | inf_debug (gnu_current_inf, "reading %s[%s] --> %s", |
2502 | paddress (target_gdbarch (), memaddr), plongest (len), | |
2503 | host_address_to_string (readbuf)); | |
2504 | res = gnu_read_inferior (task, memaddr, readbuf, len); | |
2505 | } | |
2506 | if (res == 0) | |
2507 | return TARGET_XFER_E_IO; | |
2508 | return res; | |
2509 | } | |
2510 | ||
2511 | /* Target to_xfer_partial implementation. */ | |
2512 | ||
2513 | static LONGEST | |
2514 | gnu_xfer_partial (struct target_ops *ops, enum target_object object, | |
2515 | const char *annex, gdb_byte *readbuf, | |
2516 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
2517 | { | |
2518 | switch (object) | |
2519 | { | |
2520 | case TARGET_OBJECT_MEMORY: | |
2521 | return gnu_xfer_memory (readbuf, writebuf, offset, len); | |
2522 | ||
2523 | default: | |
2524 | return -1; | |
c906108c SS |
2525 | } |
2526 | } | |
942fd805 | 2527 | |
57e76fac MS |
2528 | /* Call FUNC on each memory region in the task. */ |
2529 | static int | |
b8edc417 | 2530 | gnu_find_memory_regions (find_memory_region_ftype func, void *data) |
57e76fac MS |
2531 | { |
2532 | error_t err; | |
2533 | task_t task; | |
2534 | vm_address_t region_address, last_region_address, last_region_end; | |
2535 | vm_prot_t last_protection; | |
2536 | ||
c289427b | 2537 | if (gnu_current_inf == 0 || gnu_current_inf->task == 0) |
57e76fac | 2538 | return 0; |
c289427b | 2539 | task = gnu_current_inf->task->port; |
57e76fac MS |
2540 | if (task == MACH_PORT_NULL) |
2541 | return 0; | |
2542 | ||
2543 | region_address = last_region_address = last_region_end = VM_MIN_ADDRESS; | |
2544 | last_protection = VM_PROT_NONE; | |
2545 | while (region_address < VM_MAX_ADDRESS) | |
2546 | { | |
2547 | vm_prot_t protection; | |
2548 | vm_prot_t max_protection; | |
2549 | vm_inherit_t inheritance; | |
2550 | boolean_t shared; | |
2551 | mach_port_t object_name; | |
2552 | vm_offset_t offset; | |
2553 | vm_size_t region_length = VM_MAX_ADDRESS - region_address; | |
2554 | vm_address_t old_address = region_address; | |
2555 | ||
2556 | err = vm_region (task, | |
2557 | ®ion_address, | |
2558 | ®ion_length, | |
2559 | &protection, | |
2560 | &max_protection, | |
2561 | &inheritance, | |
2562 | &shared, | |
2563 | &object_name, | |
2564 | &offset); | |
2565 | if (err == KERN_NO_SPACE) | |
2566 | break; | |
2567 | if (err != KERN_SUCCESS) | |
2568 | { | |
8a3fe4f8 | 2569 | warning (_("vm_region failed: %s"), mach_error_string (err)); |
57e76fac MS |
2570 | return -1; |
2571 | } | |
2572 | ||
2573 | if (protection == last_protection && region_address == last_region_end) | |
2574 | /* This region is contiguous with and indistinguishable from | |
2575 | the previous one, so we just extend that one. */ | |
2576 | last_region_end = region_address += region_length; | |
2577 | else | |
2578 | { | |
2579 | /* This region is distinct from the last one we saw, so report | |
2580 | that previous one. */ | |
2581 | if (last_protection != VM_PROT_NONE) | |
2582 | (*func) (last_region_address, | |
2583 | last_region_end - last_region_address, | |
2584 | last_protection & VM_PROT_READ, | |
2585 | last_protection & VM_PROT_WRITE, | |
2586 | last_protection & VM_PROT_EXECUTE, | |
4f69f4c2 | 2587 | 1, /* MODIFIED is unknown, pass it as true. */ |
57e76fac MS |
2588 | data); |
2589 | last_region_address = region_address; | |
2590 | last_region_end = region_address += region_length; | |
2591 | last_protection = protection; | |
2592 | } | |
2593 | } | |
47f21bcc | 2594 | |
1a113c93 MS |
2595 | /* Report the final region. */ |
2596 | if (last_region_end > last_region_address && last_protection != VM_PROT_NONE) | |
2597 | (*func) (last_region_address, last_region_end - last_region_address, | |
2598 | last_protection & VM_PROT_READ, | |
2599 | last_protection & VM_PROT_WRITE, | |
2600 | last_protection & VM_PROT_EXECUTE, | |
4f69f4c2 | 2601 | 1, /* MODIFIED is unknown, pass it as true. */ |
1a113c93 | 2602 | data); |
47f21bcc MS |
2603 | |
2604 | return 0; | |
57e76fac MS |
2605 | } |
2606 | ||
c906108c | 2607 | \f |
ed9a39eb | 2608 | /* Return printable description of proc. */ |
f90b2b1d | 2609 | char * |
ed9a39eb JM |
2610 | proc_string (struct proc *proc) |
2611 | { | |
2612 | static char tid_str[80]; | |
d8734c88 | 2613 | |
ed9a39eb | 2614 | if (proc_is_task (proc)) |
8c042590 | 2615 | xsnprintf (tid_str, sizeof (tid_str), "process %d", proc->inf->pid); |
ed9a39eb | 2616 | else |
8c042590 PM |
2617 | xsnprintf (tid_str, sizeof (tid_str), "Thread %d.%d", |
2618 | proc->inf->pid, proc->tid); | |
ed9a39eb JM |
2619 | return tid_str; |
2620 | } | |
2621 | ||
2622 | static char * | |
117de6a9 | 2623 | gnu_pid_to_str (struct target_ops *ops, ptid_t ptid) |
ed9a39eb | 2624 | { |
c289427b | 2625 | struct inf *inf = gnu_current_inf; |
ca08a94c | 2626 | int tid = ptid_get_lwp (ptid); |
ed9a39eb JM |
2627 | struct proc *thread = inf_tid_to_thread (inf, tid); |
2628 | ||
2629 | if (thread) | |
2630 | return proc_string (thread); | |
2631 | else | |
2632 | { | |
2633 | static char tid_str[80]; | |
d8734c88 | 2634 | |
8c042590 | 2635 | xsnprintf (tid_str, sizeof (tid_str), "bogus thread id %d", tid); |
ed9a39eb JM |
2636 | return tid_str; |
2637 | } | |
2638 | } | |
942fd805 | 2639 | |
ed9a39eb | 2640 | \f |
b4d1e8c7 PA |
2641 | /* Create a prototype generic GNU/Hurd target. The client can |
2642 | override it with local methods. */ | |
2643 | ||
2644 | struct target_ops * | |
2645 | gnu_target (void) | |
2646 | { | |
2647 | struct target_ops *t = inf_child_target (); | |
c906108c | 2648 | |
b4d1e8c7 PA |
2649 | t->to_shortname = "GNU"; |
2650 | t->to_longname = "GNU Hurd process"; | |
2651 | t->to_doc = "GNU Hurd process"; | |
c906108c | 2652 | |
b4d1e8c7 PA |
2653 | t->to_attach = gnu_attach; |
2654 | t->to_attach_no_wait = 1; | |
2655 | t->to_detach = gnu_detach; | |
2656 | t->to_resume = gnu_resume; | |
2657 | t->to_wait = gnu_wait; | |
9b3f3ee6 | 2658 | t->to_xfer_partial = gnu_xfer_partial; |
b4d1e8c7 PA |
2659 | t->to_find_memory_regions = gnu_find_memory_regions; |
2660 | t->to_terminal_init = gnu_terminal_init_inferior; | |
2661 | t->to_kill = gnu_kill_inferior; | |
2662 | t->to_create_inferior = gnu_create_inferior; | |
2663 | t->to_mourn_inferior = gnu_mourn_inferior; | |
2664 | t->to_thread_alive = gnu_thread_alive; | |
2665 | t->to_pid_to_str = gnu_pid_to_str; | |
2666 | t->to_stop = gnu_stop; | |
2667 | ||
2668 | return t; | |
2669 | } | |
942fd805 | 2670 | |
c906108c | 2671 | \f |
c906108c SS |
2672 | /* User task commands. */ |
2673 | ||
28578e6b YQ |
2674 | static struct cmd_list_element *set_task_cmd_list = 0; |
2675 | static struct cmd_list_element *show_task_cmd_list = 0; | |
c906108c SS |
2676 | /* User thread commands. */ |
2677 | ||
2678 | /* Commands with a prefix of `set/show thread'. */ | |
2679 | extern struct cmd_list_element *thread_cmd_list; | |
2680 | struct cmd_list_element *set_thread_cmd_list = NULL; | |
2681 | struct cmd_list_element *show_thread_cmd_list = NULL; | |
2682 | ||
2683 | /* Commands with a prefix of `set/show thread default'. */ | |
2684 | struct cmd_list_element *set_thread_default_cmd_list = NULL; | |
2685 | struct cmd_list_element *show_thread_default_cmd_list = NULL; | |
2686 | ||
2687 | static void | |
2688 | set_thread_cmd (char *args, int from_tty) | |
2689 | { | |
0963b4bd MS |
2690 | printf_unfiltered ("\"set thread\" must be followed by the " |
2691 | "name of a thread property, or \"default\".\n"); | |
c906108c SS |
2692 | } |
2693 | ||
2694 | static void | |
2695 | show_thread_cmd (char *args, int from_tty) | |
2696 | { | |
0963b4bd MS |
2697 | printf_unfiltered ("\"show thread\" must be followed by the " |
2698 | "name of a thread property, or \"default\".\n"); | |
c906108c SS |
2699 | } |
2700 | ||
2701 | static void | |
2702 | set_thread_default_cmd (char *args, int from_tty) | |
2703 | { | |
0963b4bd MS |
2704 | printf_unfiltered ("\"set thread default\" must be followed " |
2705 | "by the name of a thread property.\n"); | |
c906108c SS |
2706 | } |
2707 | ||
2708 | static void | |
2709 | show_thread_default_cmd (char *args, int from_tty) | |
2710 | { | |
0963b4bd MS |
2711 | printf_unfiltered ("\"show thread default\" must be followed " |
2712 | "by the name of a thread property.\n"); | |
c906108c SS |
2713 | } |
2714 | ||
2715 | static int | |
2716 | parse_int_arg (char *args, char *cmd_prefix) | |
2717 | { | |
2718 | if (args) | |
2719 | { | |
2720 | char *arg_end; | |
2721 | int val = strtoul (args, &arg_end, 10); | |
d8734c88 | 2722 | |
c906108c SS |
2723 | if (*args && *arg_end == '\0') |
2724 | return val; | |
2725 | } | |
0963b4bd MS |
2726 | error (_("Illegal argument for \"%s\" command, should be an integer."), |
2727 | cmd_prefix); | |
c906108c SS |
2728 | } |
2729 | ||
2730 | static int | |
2731 | _parse_bool_arg (char *args, char *t_val, char *f_val, char *cmd_prefix) | |
2732 | { | |
2733 | if (!args || strcmp (args, t_val) == 0) | |
2734 | return 1; | |
2735 | else if (strcmp (args, f_val) == 0) | |
2736 | return 0; | |
2737 | else | |
0963b4bd MS |
2738 | error (_("Illegal argument for \"%s\" command, " |
2739 | "should be \"%s\" or \"%s\"."), | |
c906108c SS |
2740 | cmd_prefix, t_val, f_val); |
2741 | } | |
2742 | ||
2743 | #define parse_bool_arg(args, cmd_prefix) \ | |
2744 | _parse_bool_arg (args, "on", "off", cmd_prefix) | |
2745 | ||
2746 | static void | |
2747 | check_empty (char *args, char *cmd_prefix) | |
2748 | { | |
2749 | if (args) | |
8a3fe4f8 | 2750 | error (_("Garbage after \"%s\" command: `%s'"), cmd_prefix, args); |
c906108c SS |
2751 | } |
2752 | ||
2753 | /* Returns the alive thread named by INFERIOR_PID, or signals an error. */ | |
2754 | static struct proc * | |
fba45db2 | 2755 | cur_thread (void) |
c906108c SS |
2756 | { |
2757 | struct inf *inf = cur_inf (); | |
617fd3b5 | 2758 | struct proc *thread = inf_tid_to_thread (inf, |
ca08a94c | 2759 | ptid_get_lwp (inferior_ptid)); |
c906108c | 2760 | if (!thread) |
8a3fe4f8 | 2761 | error (_("No current thread.")); |
c906108c SS |
2762 | return thread; |
2763 | } | |
2764 | ||
2765 | /* Returns the current inferior, but signals an error if it has no task. */ | |
2766 | static struct inf * | |
fba45db2 | 2767 | active_inf (void) |
c906108c SS |
2768 | { |
2769 | struct inf *inf = cur_inf (); | |
d8734c88 | 2770 | |
c5aa993b | 2771 | if (!inf->task) |
8a3fe4f8 | 2772 | error (_("No current process.")); |
c906108c SS |
2773 | return inf; |
2774 | } | |
942fd805 | 2775 | |
c906108c SS |
2776 | \f |
2777 | static void | |
2778 | set_task_pause_cmd (char *args, int from_tty) | |
2779 | { | |
2780 | struct inf *inf = cur_inf (); | |
2781 | int old_sc = inf->pause_sc; | |
2782 | ||
2783 | inf->pause_sc = parse_bool_arg (args, "set task pause"); | |
2784 | ||
2785 | if (old_sc == 0 && inf->pause_sc != 0) | |
2786 | /* If the task is currently unsuspended, immediately suspend it, | |
2787 | otherwise wait until the next time it gets control. */ | |
2788 | inf_suspend (inf); | |
2789 | } | |
2790 | ||
2791 | static void | |
2792 | show_task_pause_cmd (char *args, int from_tty) | |
2793 | { | |
2794 | struct inf *inf = cur_inf (); | |
d8734c88 | 2795 | |
c906108c SS |
2796 | check_empty (args, "show task pause"); |
2797 | printf_unfiltered ("The inferior task %s suspended while gdb has control.\n", | |
2798 | inf->task | |
2799 | ? (inf->pause_sc == 0 ? "isn't" : "is") | |
2800 | : (inf->pause_sc == 0 ? "won't be" : "will be")); | |
2801 | } | |
2802 | ||
2803 | static void | |
2804 | set_task_detach_sc_cmd (char *args, int from_tty) | |
2805 | { | |
0963b4bd MS |
2806 | cur_inf ()->detach_sc = parse_int_arg (args, |
2807 | "set task detach-suspend-count"); | |
c906108c SS |
2808 | } |
2809 | ||
2810 | static void | |
2811 | show_task_detach_sc_cmd (char *args, int from_tty) | |
2812 | { | |
2813 | check_empty (args, "show task detach-suspend-count"); | |
0963b4bd MS |
2814 | printf_unfiltered ("The inferior task will be left with a " |
2815 | "suspend count of %d when detaching.\n", | |
c906108c SS |
2816 | cur_inf ()->detach_sc); |
2817 | } | |
942fd805 | 2818 | |
c906108c SS |
2819 | \f |
2820 | static void | |
2821 | set_thread_default_pause_cmd (char *args, int from_tty) | |
2822 | { | |
2823 | struct inf *inf = cur_inf (); | |
d8734c88 | 2824 | |
c906108c SS |
2825 | inf->default_thread_pause_sc = |
2826 | parse_bool_arg (args, "set thread default pause") ? 0 : 1; | |
2827 | } | |
2828 | ||
2829 | static void | |
2830 | show_thread_default_pause_cmd (char *args, int from_tty) | |
2831 | { | |
2832 | struct inf *inf = cur_inf (); | |
2833 | int sc = inf->default_thread_pause_sc; | |
d8734c88 | 2834 | |
c906108c SS |
2835 | check_empty (args, "show thread default pause"); |
2836 | printf_unfiltered ("New threads %s suspended while gdb has control%s.\n", | |
2837 | sc ? "are" : "aren't", | |
2838 | !sc && inf->pause_sc ? " (but the task is)" : ""); | |
2839 | } | |
2840 | ||
2841 | static void | |
2842 | set_thread_default_run_cmd (char *args, int from_tty) | |
2843 | { | |
2844 | struct inf *inf = cur_inf (); | |
d8734c88 | 2845 | |
c906108c SS |
2846 | inf->default_thread_run_sc = |
2847 | parse_bool_arg (args, "set thread default run") ? 0 : 1; | |
2848 | } | |
2849 | ||
2850 | static void | |
2851 | show_thread_default_run_cmd (char *args, int from_tty) | |
2852 | { | |
2853 | struct inf *inf = cur_inf (); | |
d8734c88 | 2854 | |
c906108c SS |
2855 | check_empty (args, "show thread default run"); |
2856 | printf_unfiltered ("New threads %s allowed to run.\n", | |
2857 | inf->default_thread_run_sc == 0 ? "are" : "aren't"); | |
2858 | } | |
2859 | ||
2860 | static void | |
2861 | set_thread_default_detach_sc_cmd (char *args, int from_tty) | |
2862 | { | |
2863 | cur_inf ()->default_thread_detach_sc = | |
2864 | parse_int_arg (args, "set thread default detach-suspend-count"); | |
2865 | } | |
2866 | ||
2867 | static void | |
2868 | show_thread_default_detach_sc_cmd (char *args, int from_tty) | |
2869 | { | |
2870 | check_empty (args, "show thread default detach-suspend-count"); | |
2871 | printf_unfiltered ("New threads will get a detach-suspend-count of %d.\n", | |
2872 | cur_inf ()->default_thread_detach_sc); | |
2873 | } | |
942fd805 | 2874 | |
c906108c SS |
2875 | \f |
2876 | /* Steal a send right called NAME in the inferior task, and make it PROC's | |
2877 | saved exception port. */ | |
2878 | static void | |
2879 | steal_exc_port (struct proc *proc, mach_port_t name) | |
2880 | { | |
2881 | error_t err; | |
2882 | mach_port_t port; | |
2883 | mach_msg_type_name_t port_type; | |
2884 | ||
2885 | if (!proc || !proc->inf->task) | |
8a3fe4f8 | 2886 | error (_("No inferior task.")); |
c906108c SS |
2887 | |
2888 | err = mach_port_extract_right (proc->inf->task->port, | |
2889 | name, MACH_MSG_TYPE_COPY_SEND, | |
2890 | &port, &port_type); | |
2891 | if (err) | |
8a3fe4f8 | 2892 | error (_("Couldn't extract send right %d from inferior: %s"), |
dc672865 | 2893 | name, safe_strerror (err)); |
c906108c SS |
2894 | |
2895 | if (proc->saved_exc_port) | |
2896 | /* Get rid of our reference to the old one. */ | |
2897 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
2898 | ||
2899 | proc->saved_exc_port = port; | |
2900 | ||
c5aa993b | 2901 | if (!proc->exc_port) |
0963b4bd MS |
2902 | /* If PROC is a thread, we may not have set its exception port |
2903 | before. We can't use proc_steal_exc_port because it also sets | |
2904 | saved_exc_port. */ | |
c906108c | 2905 | { |
c5aa993b JM |
2906 | proc->exc_port = proc->inf->event_port; |
2907 | err = proc_set_exception_port (proc, proc->exc_port); | |
8a3fe4f8 | 2908 | error (_("Can't set exception port for %s: %s"), |
dc672865 | 2909 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
2910 | } |
2911 | } | |
942fd805 | 2912 | |
c906108c SS |
2913 | static void |
2914 | set_task_exc_port_cmd (char *args, int from_tty) | |
2915 | { | |
2916 | struct inf *inf = cur_inf (); | |
d8734c88 | 2917 | |
c906108c | 2918 | if (!args) |
8a3fe4f8 | 2919 | error (_("No argument to \"set task exception-port\" command.")); |
c906108c SS |
2920 | steal_exc_port (inf->task, parse_and_eval_address (args)); |
2921 | } | |
2922 | ||
c5aa993b | 2923 | static void |
c906108c SS |
2924 | set_stopped_cmd (char *args, int from_tty) |
2925 | { | |
2926 | cur_inf ()->stopped = _parse_bool_arg (args, "yes", "no", "set stopped"); | |
2927 | } | |
2928 | ||
2929 | static void | |
2930 | show_stopped_cmd (char *args, int from_tty) | |
2931 | { | |
2932 | struct inf *inf = active_inf (); | |
d8734c88 | 2933 | |
c906108c SS |
2934 | check_empty (args, "show stopped"); |
2935 | printf_unfiltered ("The inferior process %s stopped.\n", | |
2936 | inf->stopped ? "is" : "isn't"); | |
2937 | } | |
2938 | ||
c5aa993b | 2939 | static void |
c906108c SS |
2940 | set_sig_thread_cmd (char *args, int from_tty) |
2941 | { | |
c906108c SS |
2942 | struct inf *inf = cur_inf (); |
2943 | ||
c5aa993b | 2944 | if (!args || (!isdigit (*args) && strcmp (args, "none") != 0)) |
8a3fe4f8 AC |
2945 | error (_("Illegal argument to \"set signal-thread\" command.\n" |
2946 | "Should be an integer thread ID, or `none'.")); | |
c906108c SS |
2947 | |
2948 | if (strcmp (args, "none") == 0) | |
2949 | inf->signal_thread = 0; | |
2950 | else | |
2951 | { | |
c8d37639 | 2952 | ptid_t ptid = thread_id_to_pid (atoi (args)); |
d8734c88 | 2953 | |
c8d37639 | 2954 | if (ptid_equal (ptid, minus_one_ptid)) |
0963b4bd MS |
2955 | error (_("Thread ID %s not known. " |
2956 | "Use the \"info threads\" command to\n" | |
8a3fe4f8 | 2957 | "see the IDs of currently known threads."), args); |
ca08a94c | 2958 | inf->signal_thread = inf_tid_to_thread (inf, ptid_get_lwp (ptid)); |
c906108c SS |
2959 | } |
2960 | } | |
2961 | ||
2962 | static void | |
2963 | show_sig_thread_cmd (char *args, int from_tty) | |
2964 | { | |
2965 | struct inf *inf = active_inf (); | |
d8734c88 | 2966 | |
c906108c SS |
2967 | check_empty (args, "show signal-thread"); |
2968 | if (inf->signal_thread) | |
2969 | printf_unfiltered ("The signal thread is %s.\n", | |
2970 | proc_string (inf->signal_thread)); | |
2971 | else | |
2972 | printf_unfiltered ("There is no signal thread.\n"); | |
2973 | } | |
942fd805 | 2974 | |
c906108c | 2975 | \f |
c5aa993b | 2976 | static void |
c906108c SS |
2977 | set_signals_cmd (char *args, int from_tty) |
2978 | { | |
c906108c SS |
2979 | struct inf *inf = cur_inf (); |
2980 | ||
2981 | inf->want_signals = parse_bool_arg (args, "set signals"); | |
2982 | ||
2983 | if (inf->task && inf->want_signals != inf->traced) | |
2984 | /* Make this take effect immediately in a running process. */ | |
2985 | inf_set_traced (inf, inf->want_signals); | |
2986 | } | |
2987 | ||
2988 | static void | |
2989 | show_signals_cmd (char *args, int from_tty) | |
2990 | { | |
2991 | struct inf *inf = cur_inf (); | |
d8734c88 | 2992 | |
c906108c SS |
2993 | check_empty (args, "show signals"); |
2994 | printf_unfiltered ("The inferior process's signals %s intercepted.\n", | |
2995 | inf->task | |
2996 | ? (inf->traced ? "are" : "aren't") | |
2997 | : (inf->want_signals ? "will be" : "won't be")); | |
2998 | } | |
2999 | ||
c5aa993b | 3000 | static void |
c906108c SS |
3001 | set_exceptions_cmd (char *args, int from_tty) |
3002 | { | |
3003 | struct inf *inf = cur_inf (); | |
3004 | int val = parse_bool_arg (args, "set exceptions"); | |
3005 | ||
3006 | if (inf->task && inf->want_exceptions != val) | |
3007 | /* Make this take effect immediately in a running process. */ | |
c5aa993b | 3008 | /* XXX */ ; |
c906108c SS |
3009 | |
3010 | inf->want_exceptions = val; | |
3011 | } | |
3012 | ||
3013 | static void | |
3014 | show_exceptions_cmd (char *args, int from_tty) | |
3015 | { | |
3016 | struct inf *inf = cur_inf (); | |
d8734c88 | 3017 | |
c906108c SS |
3018 | check_empty (args, "show exceptions"); |
3019 | printf_unfiltered ("Exceptions in the inferior %s trapped.\n", | |
3020 | inf->task | |
3021 | ? (inf->want_exceptions ? "are" : "aren't") | |
3022 | : (inf->want_exceptions ? "will be" : "won't be")); | |
3023 | } | |
942fd805 | 3024 | |
c906108c SS |
3025 | \f |
3026 | static void | |
3027 | set_task_cmd (char *args, int from_tty) | |
3028 | { | |
942fd805 MK |
3029 | printf_unfiltered ("\"set task\" must be followed by the name" |
3030 | " of a task property.\n"); | |
c906108c SS |
3031 | } |
3032 | ||
3033 | static void | |
3034 | show_task_cmd (char *args, int from_tty) | |
3035 | { | |
3036 | struct inf *inf = cur_inf (); | |
3037 | ||
3038 | check_empty (args, "show task"); | |
3039 | ||
3040 | show_signals_cmd (0, from_tty); | |
3041 | show_exceptions_cmd (0, from_tty); | |
3042 | show_task_pause_cmd (0, from_tty); | |
3043 | ||
3044 | if (inf->pause_sc == 0) | |
3045 | show_thread_default_pause_cmd (0, from_tty); | |
3046 | show_thread_default_run_cmd (0, from_tty); | |
3047 | ||
3048 | if (inf->task) | |
3049 | { | |
3050 | show_stopped_cmd (0, from_tty); | |
3051 | show_sig_thread_cmd (0, from_tty); | |
3052 | } | |
3053 | ||
3054 | if (inf->detach_sc != 0) | |
3055 | show_task_detach_sc_cmd (0, from_tty); | |
3056 | if (inf->default_thread_detach_sc != 0) | |
3057 | show_thread_default_detach_sc_cmd (0, from_tty); | |
3058 | } | |
942fd805 | 3059 | |
c906108c SS |
3060 | \f |
3061 | static void | |
3062 | set_noninvasive_cmd (char *args, int from_tty) | |
3063 | { | |
3064 | /* Invert the sense of the arg for each component. */ | |
3065 | char *inv_args = parse_bool_arg (args, "set noninvasive") ? "off" : "on"; | |
3066 | ||
3067 | set_task_pause_cmd (inv_args, from_tty); | |
3068 | set_signals_cmd (inv_args, from_tty); | |
3069 | set_exceptions_cmd (inv_args, from_tty); | |
3070 | } | |
942fd805 | 3071 | |
c906108c SS |
3072 | \f |
3073 | static void | |
3074 | info_port_rights (char *args, mach_port_type_t only) | |
3075 | { | |
3076 | struct inf *inf = active_inf (); | |
3d6d86c6 | 3077 | struct value *vmark = value_mark (); |
c906108c SS |
3078 | |
3079 | if (args) | |
3080 | /* Explicit list of port rights. */ | |
3081 | { | |
3082 | while (*args) | |
3083 | { | |
3d6d86c6 | 3084 | struct value *val = parse_to_comma_and_eval (&args); |
c906108c SS |
3085 | long right = value_as_long (val); |
3086 | error_t err = | |
d8734c88 MS |
3087 | print_port_info (right, 0, inf->task->port, PORTINFO_DETAILS, |
3088 | stdout); | |
3089 | ||
c906108c | 3090 | if (err) |
8a3fe4f8 | 3091 | error (_("%ld: %s."), right, safe_strerror (err)); |
c906108c SS |
3092 | } |
3093 | } | |
3094 | else | |
3095 | /* Print all of them. */ | |
3096 | { | |
3097 | error_t err = | |
d8734c88 MS |
3098 | print_task_ports_info (inf->task->port, only, PORTINFO_DETAILS, |
3099 | stdout); | |
c906108c | 3100 | if (err) |
8a3fe4f8 | 3101 | error (_("%s."), safe_strerror (err)); |
c906108c SS |
3102 | } |
3103 | ||
3104 | value_free_to_mark (vmark); | |
3105 | } | |
3106 | ||
3107 | static void | |
3108 | info_send_rights_cmd (char *args, int from_tty) | |
3109 | { | |
3110 | info_port_rights (args, MACH_PORT_TYPE_SEND); | |
3111 | } | |
942fd805 | 3112 | |
c906108c SS |
3113 | static void |
3114 | info_recv_rights_cmd (char *args, int from_tty) | |
3115 | { | |
3116 | info_port_rights (args, MACH_PORT_TYPE_RECEIVE); | |
3117 | } | |
942fd805 | 3118 | |
c906108c SS |
3119 | static void |
3120 | info_port_sets_cmd (char *args, int from_tty) | |
3121 | { | |
3122 | info_port_rights (args, MACH_PORT_TYPE_PORT_SET); | |
3123 | } | |
942fd805 | 3124 | |
c906108c SS |
3125 | static void |
3126 | info_dead_names_cmd (char *args, int from_tty) | |
3127 | { | |
3128 | info_port_rights (args, MACH_PORT_TYPE_DEAD_NAME); | |
3129 | } | |
942fd805 | 3130 | |
c906108c SS |
3131 | static void |
3132 | info_port_rights_cmd (char *args, int from_tty) | |
3133 | { | |
3134 | info_port_rights (args, ~0); | |
3135 | } | |
942fd805 | 3136 | |
c906108c | 3137 | \f |
c5aa993b | 3138 | static void |
942fd805 | 3139 | add_task_commands (void) |
c906108c | 3140 | { |
1a966eab AC |
3141 | add_cmd ("pause", class_run, set_thread_default_pause_cmd, _("\ |
3142 | Set whether the new threads are suspended while gdb has control.\n\ | |
942fd805 MK |
3143 | This property normally has no effect because the whole task is\n\ |
3144 | suspended, however, that may be disabled with \"set task pause off\".\n\ | |
1a966eab | 3145 | The default value is \"off\"."), |
c906108c | 3146 | &set_thread_default_cmd_list); |
1a966eab AC |
3147 | add_cmd ("pause", no_class, show_thread_default_pause_cmd, _("\ |
3148 | Show whether new threads are suspended while gdb has control."), | |
c906108c | 3149 | &show_thread_default_cmd_list); |
942fd805 | 3150 | |
1a966eab AC |
3151 | add_cmd ("run", class_run, set_thread_default_run_cmd, _("\ |
3152 | Set whether new threads are allowed to run (once gdb has noticed them)."), | |
c906108c | 3153 | &set_thread_default_cmd_list); |
1a966eab AC |
3154 | add_cmd ("run", no_class, show_thread_default_run_cmd, _("\ |
3155 | Show whether new threads are allowed to run (once gdb has noticed them)."), | |
c906108c | 3156 | &show_thread_default_cmd_list); |
942fd805 | 3157 | |
c906108c | 3158 | add_cmd ("detach-suspend-count", class_run, set_thread_default_detach_sc_cmd, |
1a966eab | 3159 | _("Set the default detach-suspend-count value for new threads."), |
c906108c SS |
3160 | &set_thread_default_cmd_list); |
3161 | add_cmd ("detach-suspend-count", no_class, show_thread_default_detach_sc_cmd, | |
1a966eab | 3162 | _("Show the default detach-suspend-count value for new threads."), |
c906108c SS |
3163 | &show_thread_default_cmd_list); |
3164 | ||
1a966eab AC |
3165 | add_cmd ("signals", class_run, set_signals_cmd, _("\ |
3166 | Set whether the inferior process's signals will be intercepted.\n\ | |
3167 | Mach exceptions (such as breakpoint traps) are not affected."), | |
c906108c SS |
3168 | &setlist); |
3169 | add_alias_cmd ("sigs", "signals", class_run, 1, &setlist); | |
1a966eab AC |
3170 | add_cmd ("signals", no_class, show_signals_cmd, _("\ |
3171 | Show whether the inferior process's signals will be intercepted."), | |
c906108c SS |
3172 | &showlist); |
3173 | add_alias_cmd ("sigs", "signals", no_class, 1, &showlist); | |
3174 | ||
1a966eab AC |
3175 | add_cmd ("signal-thread", class_run, set_sig_thread_cmd, _("\ |
3176 | Set the thread that gdb thinks is the libc signal thread.\n\ | |
3177 | This thread is run when delivering a signal to a non-stopped process."), | |
c906108c SS |
3178 | &setlist); |
3179 | add_alias_cmd ("sigthread", "signal-thread", class_run, 1, &setlist); | |
1a966eab AC |
3180 | add_cmd ("signal-thread", no_class, show_sig_thread_cmd, _("\ |
3181 | Set the thread that gdb thinks is the libc signal thread."), | |
c906108c SS |
3182 | &showlist); |
3183 | add_alias_cmd ("sigthread", "signal-thread", no_class, 1, &showlist); | |
3184 | ||
1a966eab AC |
3185 | add_cmd ("stopped", class_run, set_stopped_cmd, _("\ |
3186 | Set whether gdb thinks the inferior process is stopped as with SIGSTOP.\n\ | |
3187 | Stopped process will be continued by sending them a signal."), | |
c906108c | 3188 | &setlist); |
fe79276f | 3189 | add_cmd ("stopped", no_class, show_stopped_cmd, _("\ |
1a966eab | 3190 | Show whether gdb thinks the inferior process is stopped as with SIGSTOP."), |
c906108c SS |
3191 | &showlist); |
3192 | ||
1a966eab AC |
3193 | add_cmd ("exceptions", class_run, set_exceptions_cmd, _("\ |
3194 | Set whether exceptions in the inferior process will be trapped.\n\ | |
942fd805 | 3195 | When exceptions are turned off, neither breakpoints nor single-stepping\n\ |
1a966eab | 3196 | will work."), |
c906108c SS |
3197 | &setlist); |
3198 | /* Allow `set exc' despite conflict with `set exception-port'. */ | |
3199 | add_alias_cmd ("exc", "exceptions", class_run, 1, &setlist); | |
1a966eab AC |
3200 | add_cmd ("exceptions", no_class, show_exceptions_cmd, _("\ |
3201 | Show whether exceptions in the inferior process will be trapped."), | |
c906108c SS |
3202 | &showlist); |
3203 | ||
3204 | add_prefix_cmd ("task", no_class, set_task_cmd, | |
1bedd215 | 3205 | _("Command prefix for setting task attributes."), |
c906108c SS |
3206 | &set_task_cmd_list, "set task ", 0, &setlist); |
3207 | add_prefix_cmd ("task", no_class, show_task_cmd, | |
1bedd215 | 3208 | _("Command prefix for showing task attributes."), |
c906108c SS |
3209 | &show_task_cmd_list, "show task ", 0, &showlist); |
3210 | ||
1a966eab AC |
3211 | add_cmd ("pause", class_run, set_task_pause_cmd, _("\ |
3212 | Set whether the task is suspended while gdb has control.\n\ | |
942fd805 MK |
3213 | A value of \"on\" takes effect immediately, otherwise nothing happens\n\ |
3214 | until the next time the program is continued.\n\ | |
3215 | When setting this to \"off\", \"set thread default pause on\" can be\n\ | |
1a966eab | 3216 | used to pause individual threads by default instead."), |
c906108c SS |
3217 | &set_task_cmd_list); |
3218 | add_cmd ("pause", no_class, show_task_pause_cmd, | |
1a966eab | 3219 | _("Show whether the task is suspended while gdb has control."), |
c906108c | 3220 | &show_task_cmd_list); |
942fd805 | 3221 | |
c906108c | 3222 | add_cmd ("detach-suspend-count", class_run, set_task_detach_sc_cmd, |
1a966eab | 3223 | _("Set the suspend count will leave on the thread when detaching."), |
c906108c SS |
3224 | &set_task_cmd_list); |
3225 | add_cmd ("detach-suspend-count", no_class, show_task_detach_sc_cmd, | |
0963b4bd MS |
3226 | _("Show the suspend count will leave " |
3227 | "on the thread when detaching."), | |
c906108c SS |
3228 | &show_task_cmd_list); |
3229 | ||
1a966eab AC |
3230 | add_cmd ("exception-port", no_class, set_task_exc_port_cmd, _("\ |
3231 | Set the task exception port to which we forward exceptions.\n\ | |
3232 | The argument should be the value of the send right in the task."), | |
c906108c SS |
3233 | &set_task_cmd_list); |
3234 | add_alias_cmd ("excp", "exception-port", no_class, 1, &set_task_cmd_list); | |
942fd805 MK |
3235 | add_alias_cmd ("exc-port", "exception-port", no_class, 1, |
3236 | &set_task_cmd_list); | |
c906108c SS |
3237 | |
3238 | /* A convenient way of turning on all options require to noninvasively | |
3239 | debug running tasks. */ | |
1a966eab AC |
3240 | add_cmd ("noninvasive", no_class, set_noninvasive_cmd, _("\ |
3241 | Set task options so that we interfere as little as possible.\n\ | |
942fd805 | 3242 | This is the same as setting `task pause', `exceptions', and\n\ |
1a966eab | 3243 | `signals' to the opposite value."), |
c906108c SS |
3244 | &setlist); |
3245 | ||
3246 | /* Commands to show information about the task's ports. */ | |
3247 | add_cmd ("send-rights", class_info, info_send_rights_cmd, | |
1a966eab | 3248 | _("Show information about the task's send rights"), |
c906108c SS |
3249 | &infolist); |
3250 | add_cmd ("receive-rights", class_info, info_recv_rights_cmd, | |
1a966eab | 3251 | _("Show information about the task's receive rights"), |
c906108c | 3252 | &infolist); |
942fd805 | 3253 | add_cmd ("port-rights", class_info, info_port_rights_cmd, |
1a966eab | 3254 | _("Show information about the task's port rights"), |
c906108c SS |
3255 | &infolist); |
3256 | add_cmd ("port-sets", class_info, info_port_sets_cmd, | |
1a966eab | 3257 | _("Show information about the task's port sets"), |
c906108c SS |
3258 | &infolist); |
3259 | add_cmd ("dead-names", class_info, info_dead_names_cmd, | |
1a966eab | 3260 | _("Show information about the task's dead names"), |
c906108c SS |
3261 | &infolist); |
3262 | add_info_alias ("ports", "port-rights", 1); | |
3263 | add_info_alias ("port", "port-rights", 1); | |
3264 | add_info_alias ("psets", "port-sets", 1); | |
3265 | } | |
c906108c | 3266 | |
942fd805 | 3267 | \f |
c906108c SS |
3268 | static void |
3269 | set_thread_pause_cmd (char *args, int from_tty) | |
3270 | { | |
3271 | struct proc *thread = cur_thread (); | |
3272 | int old_sc = thread->pause_sc; | |
d8734c88 | 3273 | |
c906108c SS |
3274 | thread->pause_sc = parse_bool_arg (args, "set thread pause"); |
3275 | if (old_sc == 0 && thread->pause_sc != 0 && thread->inf->pause_sc == 0) | |
3276 | /* If the task is currently unsuspended, immediately suspend it, | |
3277 | otherwise wait until the next time it gets control. */ | |
3278 | inf_suspend (thread->inf); | |
3279 | } | |
3280 | ||
3281 | static void | |
3282 | show_thread_pause_cmd (char *args, int from_tty) | |
3283 | { | |
3284 | struct proc *thread = cur_thread (); | |
3285 | int sc = thread->pause_sc; | |
d8734c88 | 3286 | |
c906108c SS |
3287 | check_empty (args, "show task pause"); |
3288 | printf_unfiltered ("Thread %s %s suspended while gdb has control%s.\n", | |
3289 | proc_string (thread), | |
3290 | sc ? "is" : "isn't", | |
942fd805 | 3291 | !sc && thread->inf->pause_sc ? " (but the task is)" : ""); |
c906108c SS |
3292 | } |
3293 | ||
3294 | static void | |
3295 | set_thread_run_cmd (char *args, int from_tty) | |
3296 | { | |
3297 | struct proc *thread = cur_thread (); | |
d8734c88 | 3298 | |
c906108c SS |
3299 | thread->run_sc = parse_bool_arg (args, "set thread run") ? 0 : 1; |
3300 | } | |
3301 | ||
3302 | static void | |
3303 | show_thread_run_cmd (char *args, int from_tty) | |
3304 | { | |
3305 | struct proc *thread = cur_thread (); | |
d8734c88 | 3306 | |
c906108c SS |
3307 | check_empty (args, "show thread run"); |
3308 | printf_unfiltered ("Thread %s %s allowed to run.", | |
3309 | proc_string (thread), | |
3310 | thread->run_sc == 0 ? "is" : "isn't"); | |
3311 | } | |
3312 | ||
3313 | static void | |
3314 | set_thread_detach_sc_cmd (char *args, int from_tty) | |
3315 | { | |
942fd805 MK |
3316 | cur_thread ()->detach_sc = parse_int_arg (args, |
3317 | "set thread detach-suspend-count"); | |
c906108c SS |
3318 | } |
3319 | ||
3320 | static void | |
3321 | show_thread_detach_sc_cmd (char *args, int from_tty) | |
3322 | { | |
3323 | struct proc *thread = cur_thread (); | |
d8734c88 | 3324 | |
c906108c | 3325 | check_empty (args, "show thread detach-suspend-count"); |
942fd805 MK |
3326 | printf_unfiltered ("Thread %s will be left with a suspend count" |
3327 | " of %d when detaching.\n", | |
c906108c SS |
3328 | proc_string (thread), |
3329 | thread->detach_sc); | |
3330 | } | |
3331 | ||
3332 | static void | |
3333 | set_thread_exc_port_cmd (char *args, int from_tty) | |
3334 | { | |
3335 | struct proc *thread = cur_thread (); | |
d8734c88 | 3336 | |
c906108c | 3337 | if (!args) |
8a3fe4f8 | 3338 | error (_("No argument to \"set thread exception-port\" command.")); |
c906108c SS |
3339 | steal_exc_port (thread, parse_and_eval_address (args)); |
3340 | } | |
3341 | ||
3342 | #if 0 | |
3343 | static void | |
3344 | show_thread_cmd (char *args, int from_tty) | |
3345 | { | |
3346 | struct proc *thread = cur_thread (); | |
d8734c88 | 3347 | |
c906108c SS |
3348 | check_empty (args, "show thread"); |
3349 | show_thread_run_cmd (0, from_tty); | |
3350 | show_thread_pause_cmd (0, from_tty); | |
3351 | if (thread->detach_sc != 0) | |
3352 | show_thread_detach_sc_cmd (0, from_tty); | |
3353 | } | |
3354 | #endif | |
3355 | ||
3356 | static void | |
3357 | thread_takeover_sc_cmd (char *args, int from_tty) | |
3358 | { | |
3359 | struct proc *thread = cur_thread (); | |
d8734c88 | 3360 | |
c906108c SS |
3361 | thread_basic_info_data_t _info; |
3362 | thread_basic_info_t info = &_info; | |
3363 | mach_msg_type_number_t info_len = THREAD_BASIC_INFO_COUNT; | |
3364 | error_t err = | |
c5aa993b | 3365 | thread_info (thread->port, THREAD_BASIC_INFO, (int *) &info, &info_len); |
c906108c | 3366 | if (err) |
8a3fe4f8 | 3367 | error (("%s."), safe_strerror (err)); |
c906108c SS |
3368 | thread->sc = info->suspend_count; |
3369 | if (from_tty) | |
3370 | printf_unfiltered ("Suspend count was %d.\n", thread->sc); | |
3371 | if (info != &_info) | |
942fd805 MK |
3372 | vm_deallocate (mach_task_self (), (vm_address_t) info, |
3373 | info_len * sizeof (int)); | |
c906108c SS |
3374 | } |
3375 | ||
942fd805 MK |
3376 | \f |
3377 | static void | |
3378 | add_thread_commands (void) | |
c906108c SS |
3379 | { |
3380 | add_prefix_cmd ("thread", no_class, set_thread_cmd, | |
1bedd215 | 3381 | _("Command prefix for setting thread properties."), |
c906108c SS |
3382 | &set_thread_cmd_list, "set thread ", 0, &setlist); |
3383 | add_prefix_cmd ("default", no_class, show_thread_cmd, | |
1bedd215 | 3384 | _("Command prefix for setting default thread properties."), |
c906108c SS |
3385 | &set_thread_default_cmd_list, "set thread default ", 0, |
3386 | &set_thread_cmd_list); | |
3387 | add_prefix_cmd ("thread", no_class, set_thread_default_cmd, | |
1bedd215 | 3388 | _("Command prefix for showing thread properties."), |
c906108c SS |
3389 | &show_thread_cmd_list, "show thread ", 0, &showlist); |
3390 | add_prefix_cmd ("default", no_class, show_thread_default_cmd, | |
1bedd215 | 3391 | _("Command prefix for showing default thread properties."), |
c906108c SS |
3392 | &show_thread_default_cmd_list, "show thread default ", 0, |
3393 | &show_thread_cmd_list); | |
3394 | ||
1a966eab AC |
3395 | add_cmd ("pause", class_run, set_thread_pause_cmd, _("\ |
3396 | Set whether the current thread is suspended while gdb has control.\n\ | |
942fd805 MK |
3397 | A value of \"on\" takes effect immediately, otherwise nothing happens\n\ |
3398 | until the next time the program is continued. This property normally\n\ | |
3399 | has no effect because the whole task is suspended, however, that may\n\ | |
3400 | be disabled with \"set task pause off\".\n\ | |
1a966eab | 3401 | The default value is \"off\"."), |
c906108c | 3402 | &set_thread_cmd_list); |
1a966eab AC |
3403 | add_cmd ("pause", no_class, show_thread_pause_cmd, _("\ |
3404 | Show whether the current thread is suspended while gdb has control."), | |
c906108c SS |
3405 | &show_thread_cmd_list); |
3406 | ||
3407 | add_cmd ("run", class_run, set_thread_run_cmd, | |
1a966eab | 3408 | _("Set whether the current thread is allowed to run."), |
c906108c SS |
3409 | &set_thread_cmd_list); |
3410 | add_cmd ("run", no_class, show_thread_run_cmd, | |
1a966eab | 3411 | _("Show whether the current thread is allowed to run."), |
c906108c SS |
3412 | &show_thread_cmd_list); |
3413 | ||
1a966eab AC |
3414 | add_cmd ("detach-suspend-count", class_run, set_thread_detach_sc_cmd, _("\ |
3415 | Set the suspend count will leave on the thread when detaching.\n\ | |
942fd805 | 3416 | Note that this is relative to suspend count when gdb noticed the thread;\n\ |
1a966eab | 3417 | use the `thread takeover-suspend-count' to force it to an absolute value."), |
c906108c | 3418 | &set_thread_cmd_list); |
1a966eab AC |
3419 | add_cmd ("detach-suspend-count", no_class, show_thread_detach_sc_cmd, _("\ |
3420 | Show the suspend count will leave on the thread when detaching.\n\ | |
942fd805 | 3421 | Note that this is relative to suspend count when gdb noticed the thread;\n\ |
1a966eab | 3422 | use the `thread takeover-suspend-count' to force it to an absolute value."), |
c906108c SS |
3423 | &show_thread_cmd_list); |
3424 | ||
1a966eab AC |
3425 | add_cmd ("exception-port", no_class, set_thread_exc_port_cmd, _("\ |
3426 | Set the thread exception port to which we forward exceptions.\n\ | |
942fd805 | 3427 | This overrides the task exception port.\n\ |
1a966eab | 3428 | The argument should be the value of the send right in the task."), |
c906108c SS |
3429 | &set_thread_cmd_list); |
3430 | add_alias_cmd ("excp", "exception-port", no_class, 1, &set_thread_cmd_list); | |
942fd805 MK |
3431 | add_alias_cmd ("exc-port", "exception-port", no_class, 1, |
3432 | &set_thread_cmd_list); | |
c906108c | 3433 | |
1a966eab AC |
3434 | add_cmd ("takeover-suspend-count", no_class, thread_takeover_sc_cmd, _("\ |
3435 | Force the threads absolute suspend-count to be gdb's.\n\ | |
942fd805 | 3436 | Prior to giving this command, gdb's thread suspend-counts are relative\n\ |
1a966eab | 3437 | to the thread's initial suspend-count when gdb notices the threads."), |
c906108c SS |
3438 | &thread_cmd_list); |
3439 | } | |
942fd805 | 3440 | |
c906108c SS |
3441 | \f |
3442 | void | |
942fd805 | 3443 | _initialize_gnu_nat (void) |
c906108c SS |
3444 | { |
3445 | proc_server = getproc (); | |
942fd805 | 3446 | |
c906108c SS |
3447 | add_task_commands (); |
3448 | add_thread_commands (); | |
cbe54154 PA |
3449 | add_setshow_boolean_cmd ("gnu-nat", class_maintenance, |
3450 | &gnu_debug_flag, | |
3451 | _("Set debugging output for the gnu backend."), | |
3452 | _("Show debugging output for the gnu backend."), | |
3453 | NULL, | |
3454 | NULL, | |
3455 | NULL, | |
3456 | &setdebuglist, | |
3457 | &showdebuglist); | |
c906108c SS |
3458 | } |
3459 | \f | |
3460 | #ifdef FLUSH_INFERIOR_CACHE | |
3461 | ||
3462 | /* When over-writing code on some machines the I-Cache must be flushed | |
3463 | explicitly, because it is not kept coherent by the lazy hardware. | |
3464 | This definitely includes breakpoints, for instance, or else we | |
0963b4bd | 3465 | end up looping in mysterious Bpt traps. */ |
c906108c SS |
3466 | |
3467 | void | |
fba45db2 | 3468 | flush_inferior_icache (CORE_ADDR pc, int amount) |
c906108c SS |
3469 | { |
3470 | vm_machine_attribute_val_t flush = MATTR_VAL_ICACHE_FLUSH; | |
c5aa993b JM |
3471 | error_t ret; |
3472 | ||
c289427b | 3473 | ret = vm_machine_attribute (gnu_current_inf->task->port, |
c906108c SS |
3474 | pc, |
3475 | amount, | |
3476 | MATTR_CACHE, | |
3477 | &flush); | |
3478 | if (ret != KERN_SUCCESS) | |
8a3fe4f8 | 3479 | warning (_("Error flushing inferior's cache : %s"), safe_strerror (ret)); |
c906108c | 3480 | } |
c5aa993b | 3481 | #endif /* FLUSH_INFERIOR_CACHE */ |