Commit | Line | Data |
---|---|---|
da59e081 | 1 | /* Interface GDB to the GNU Hurd. |
618f726f | 2 | Copyright (C) 1992-2016 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> |
c906108c | 26 | #include <limits.h> |
942fd805 MK |
27 | #include <setjmp.h> |
28 | #include <signal.h> | |
c906108c SS |
29 | #include <sys/ptrace.h> |
30 | ||
c906108c | 31 | #include <mach.h> |
c906108c SS |
32 | #include <mach_error.h> |
33 | #include <mach/exception.h> | |
942fd805 MK |
34 | #include <mach/message.h> |
35 | #include <mach/notify.h> | |
c906108c SS |
36 | #include <mach/vm_attributes.h> |
37 | ||
942fd805 MK |
38 | #include <hurd.h> |
39 | #include <hurd/interrupt.h> | |
c906108c SS |
40 | #include <hurd/msg.h> |
41 | #include <hurd/msg_request.h> | |
942fd805 | 42 | #include <hurd/process.h> |
96ffcb62 AS |
43 | /* Defined in <hurd/process.h>, but we need forward declarations from |
44 | <hurd/process_request.h> as well. */ | |
45 | #undef _process_user_ | |
942fd805 | 46 | #include <hurd/process_request.h> |
c906108c | 47 | #include <hurd/signal.h> |
c906108c SS |
48 | #include <hurd/sigpreempt.h> |
49 | ||
50 | #include <portinfo.h> | |
51 | ||
c906108c SS |
52 | #include "inferior.h" |
53 | #include "symtab.h" | |
54 | #include "value.h" | |
55 | #include "language.h" | |
56 | #include "target.h" | |
03f2053f | 57 | #include "gdb_wait.h" |
c906108c SS |
58 | #include "gdbcmd.h" |
59 | #include "gdbcore.h" | |
942fd805 | 60 | #include "gdbthread.h" |
3b3e6bee | 61 | #include "gdb_obstack.h" |
c906108c SS |
62 | |
63 | #include "gnu-nat.h" | |
b4d1e8c7 | 64 | #include "inf-child.h" |
c906108c SS |
65 | |
66 | #include "exc_request_S.h" | |
67 | #include "notify_S.h" | |
68 | #include "process_reply_S.h" | |
69 | #include "msg_reply_S.h" | |
70 | #include "exc_request_U.h" | |
71 | #include "msg_U.h" | |
72 | ||
73 | static process_t proc_server = MACH_PORT_NULL; | |
74 | ||
75 | /* If we've sent a proc_wait_request to the proc server, the pid of the | |
76 | process we asked about. We can only ever have one outstanding. */ | |
77 | int proc_wait_pid = 0; | |
78 | ||
79 | /* The number of wait requests we've sent, and expect replies from. */ | |
80 | int proc_waits_pending = 0; | |
81 | ||
82 | int gnu_debug_flag = 0; | |
83 | ||
84 | /* Forward decls */ | |
85 | ||
f04a82ef | 86 | static struct inf *make_inf (); |
c906108c SS |
87 | void inf_clear_wait (struct inf *inf); |
88 | void inf_cleanup (struct inf *inf); | |
89 | void inf_startup (struct inf *inf, int pid); | |
90 | int inf_update_suspends (struct inf *inf); | |
91 | void inf_set_pid (struct inf *inf, pid_t pid); | |
92 | void inf_validate_procs (struct inf *inf); | |
93 | void inf_steal_exc_ports (struct inf *inf); | |
94 | void inf_restore_exc_ports (struct inf *inf); | |
39efb398 AC |
95 | void inf_set_threads_resume_sc (struct inf *inf, |
96 | struct proc *run_thread, | |
97 | int run_others); | |
98 | int inf_set_threads_resume_sc_for_signal_thread (struct inf *inf); | |
99 | void inf_suspend (struct inf *inf); | |
100 | void inf_resume (struct inf *inf); | |
c906108c SS |
101 | void inf_set_step_thread (struct inf *inf, struct proc *proc); |
102 | void inf_detach (struct inf *inf); | |
103 | void inf_attach (struct inf *inf, int pid); | |
2ea28649 | 104 | void inf_signal (struct inf *inf, enum gdb_signal sig); |
cce74817 | 105 | void inf_continue (struct inf *inf); |
c906108c SS |
106 | |
107 | #define inf_debug(_inf, msg, args...) \ | |
108 | do { struct inf *__inf = (_inf); \ | |
a74ce742 PM |
109 | debug ("{inf %d %s}: " msg, __inf->pid, \ |
110 | host_address_to_string (__inf) , ##args); } while (0) | |
c906108c SS |
111 | |
112 | void proc_abort (struct proc *proc, int force); | |
c906108c SS |
113 | struct proc *make_proc (struct inf *inf, mach_port_t port, int tid); |
114 | struct proc *_proc_free (struct proc *proc); | |
115 | int proc_update_sc (struct proc *proc); | |
c5aa993b | 116 | error_t proc_get_exception_port (struct proc *proc, mach_port_t * port); |
c906108c SS |
117 | error_t proc_set_exception_port (struct proc *proc, mach_port_t port); |
118 | static mach_port_t _proc_get_exc_port (struct proc *proc); | |
119 | void proc_steal_exc_port (struct proc *proc, mach_port_t exc_port); | |
120 | void proc_restore_exc_port (struct proc *proc); | |
121 | int proc_trace (struct proc *proc, int set); | |
c906108c SS |
122 | |
123 | /* Evaluate RPC_EXPR in a scope with the variables MSGPORT and REFPORT bound | |
124 | to INF's msg port and task port respectively. If it has no msg port, | |
125 | EIEIO is returned. INF must refer to a running process! */ | |
126 | #define INF_MSGPORT_RPC(inf, rpc_expr) \ | |
127 | HURD_MSGPORT_RPC (proc_getmsgport (proc_server, inf->pid, &msgport), \ | |
128 | (refport = inf->task->port, 0), 0, \ | |
129 | msgport ? (rpc_expr) : EIEIO) | |
130 | ||
131 | /* Like INF_MSGPORT_RPC, but will also resume the signal thread to ensure | |
132 | there's someone around to deal with the RPC (and resuspend things | |
133 | afterwards). This effects INF's threads' resume_sc count. */ | |
134 | #define INF_RESUME_MSGPORT_RPC(inf, rpc_expr) \ | |
135 | (inf_set_threads_resume_sc_for_signal_thread (inf) \ | |
136 | ? ({ error_t __e; \ | |
137 | inf_resume (inf); \ | |
138 | __e = INF_MSGPORT_RPC (inf, rpc_expr); \ | |
139 | inf_suspend (inf); \ | |
140 | __e; }) \ | |
141 | : EIEIO) | |
142 | ||
c906108c SS |
143 | \f |
144 | /* The state passed by an exception message. */ | |
145 | struct exc_state | |
c5aa993b | 146 | { |
0963b4bd | 147 | int exception; /* The exception code. */ |
c5aa993b | 148 | int code, subcode; |
0963b4bd MS |
149 | mach_port_t handler; /* The real exception port to handle this. */ |
150 | mach_port_t reply; /* The reply port from the exception call. */ | |
c5aa993b | 151 | }; |
c906108c | 152 | |
0963b4bd | 153 | /* The results of the last wait an inf did. */ |
c906108c | 154 | struct inf_wait |
c5aa993b JM |
155 | { |
156 | struct target_waitstatus status; /* The status returned to gdb. */ | |
0963b4bd | 157 | struct exc_state exc; /* The exception that caused us to return. */ |
c5aa993b JM |
158 | struct proc *thread; /* The thread in question. */ |
159 | int suppress; /* Something trivial happened. */ | |
160 | }; | |
c906108c SS |
161 | |
162 | /* The state of an inferior. */ | |
163 | struct inf | |
c5aa993b JM |
164 | { |
165 | /* Fields describing the current inferior. */ | |
c906108c | 166 | |
c5aa993b JM |
167 | struct proc *task; /* The mach task. */ |
168 | struct proc *threads; /* A linked list of all threads in TASK. */ | |
c906108c | 169 | |
0963b4bd MS |
170 | /* True if THREADS needn't be validated by querying the task. We |
171 | assume that we and the task in question are the only ones | |
172 | frobbing the thread list, so as long as we don't let any code | |
173 | run, we don't have to worry about THREADS changing. */ | |
c5aa993b | 174 | int threads_up_to_date; |
c906108c | 175 | |
0963b4bd | 176 | pid_t pid; /* The real system PID. */ |
c906108c | 177 | |
c5aa993b | 178 | struct inf_wait wait; /* What to return from target_wait. */ |
c906108c | 179 | |
0963b4bd MS |
180 | /* One thread proc in INF may be in `single-stepping mode'. This |
181 | is it. */ | |
c5aa993b | 182 | struct proc *step_thread; |
c906108c | 183 | |
c5aa993b JM |
184 | /* The thread we think is the signal thread. */ |
185 | struct proc *signal_thread; | |
c906108c | 186 | |
c5aa993b | 187 | mach_port_t event_port; /* Where we receive various msgs. */ |
c906108c | 188 | |
c5aa993b JM |
189 | /* True if we think at least one thread in the inferior could currently be |
190 | running. */ | |
191 | unsigned int running:1; | |
c906108c | 192 | |
c5aa993b JM |
193 | /* True if the process has stopped (in the proc server sense). Note that |
194 | since a proc server `stop' leaves the signal thread running, the inf can | |
195 | be RUNNING && STOPPED... */ | |
196 | unsigned int stopped:1; | |
cce74817 | 197 | |
c5aa993b JM |
198 | /* True if the inferior has no message port. */ |
199 | unsigned int nomsg:1; | |
c906108c | 200 | |
c5aa993b JM |
201 | /* True if the inferior is traced. */ |
202 | unsigned int traced:1; | |
c906108c | 203 | |
c5aa993b JM |
204 | /* True if we shouldn't try waiting for the inferior, usually because we |
205 | can't for some reason. */ | |
206 | unsigned int no_wait:1; | |
c906108c | 207 | |
c5aa993b | 208 | /* When starting a new inferior, we don't try to validate threads until all |
c82f56d9 | 209 | the proper execs have been done, which this flag states we still |
c5aa993b | 210 | expect to happen. */ |
c82f56d9 | 211 | unsigned int pending_execs:1; |
c906108c | 212 | |
0963b4bd | 213 | /* Fields describing global state. */ |
c906108c | 214 | |
c5aa993b JM |
215 | /* The task suspend count used when gdb has control. This is normally 1 to |
216 | make things easier for us, but sometimes (like when attaching to vital | |
217 | system servers) it may be desirable to let the task continue to run | |
218 | (pausing individual threads as necessary). */ | |
219 | int pause_sc; | |
c906108c | 220 | |
c5aa993b JM |
221 | /* The task suspend count left when detaching from a task. */ |
222 | int detach_sc; | |
c906108c | 223 | |
c5aa993b JM |
224 | /* The initial values used for the run_sc and pause_sc of newly discovered |
225 | threads -- see the definition of those fields in struct proc. */ | |
226 | int default_thread_run_sc; | |
227 | int default_thread_pause_sc; | |
228 | int default_thread_detach_sc; | |
c906108c | 229 | |
c5aa993b JM |
230 | /* True if the process should be traced when started/attached. Newly |
231 | started processes *must* be traced at first to exec them properly, but | |
232 | if this is false, tracing is turned off as soon it has done so. */ | |
233 | int want_signals; | |
c906108c | 234 | |
c5aa993b JM |
235 | /* True if exceptions from the inferior process should be trapped. This |
236 | must be on to use breakpoints. */ | |
237 | int want_exceptions; | |
238 | }; | |
c906108c SS |
239 | |
240 | ||
c5aa993b JM |
241 | int |
242 | __proc_pid (struct proc *proc) | |
c906108c SS |
243 | { |
244 | return proc->inf->pid; | |
245 | } | |
942fd805 | 246 | |
c906108c SS |
247 | \f |
248 | /* Update PROC's real suspend count to match it's desired one. Returns true | |
249 | if we think PROC is now in a runnable state. */ | |
250 | int | |
251 | proc_update_sc (struct proc *proc) | |
252 | { | |
253 | int running; | |
c5aa993b | 254 | int err = 0; |
c906108c SS |
255 | int delta = proc->sc - proc->cur_sc; |
256 | ||
257 | if (delta) | |
258 | proc_debug (proc, "sc: %d --> %d", proc->cur_sc, proc->sc); | |
259 | ||
260 | if (proc->sc == 0 && proc->state_changed) | |
0963b4bd | 261 | /* Since PROC may start running, we must write back any state changes. */ |
c906108c | 262 | { |
bf62e5b4 | 263 | gdb_assert (proc_is_thread (proc)); |
c906108c SS |
264 | proc_debug (proc, "storing back changed thread state"); |
265 | err = thread_set_state (proc->port, THREAD_STATE_FLAVOR, | |
f75c77fc | 266 | (thread_state_t) &proc->state, THREAD_STATE_SIZE); |
c5aa993b | 267 | if (!err) |
c906108c SS |
268 | proc->state_changed = 0; |
269 | } | |
270 | ||
271 | if (delta > 0) | |
942fd805 MK |
272 | { |
273 | while (delta-- > 0 && !err) | |
274 | { | |
275 | if (proc_is_task (proc)) | |
276 | err = task_suspend (proc->port); | |
277 | else | |
278 | err = thread_suspend (proc->port); | |
279 | } | |
280 | } | |
c906108c | 281 | else |
942fd805 MK |
282 | { |
283 | while (delta++ < 0 && !err) | |
284 | { | |
285 | if (proc_is_task (proc)) | |
286 | err = task_resume (proc->port); | |
287 | else | |
288 | err = thread_resume (proc->port); | |
289 | } | |
290 | } | |
c5aa993b | 291 | if (!err) |
c906108c SS |
292 | proc->cur_sc = proc->sc; |
293 | ||
294 | /* If we got an error, then the task/thread has disappeared. */ | |
295 | running = !err && proc->sc == 0; | |
296 | ||
297 | proc_debug (proc, "is %s", err ? "dead" : running ? "running" : "suspended"); | |
298 | if (err) | |
dc672865 | 299 | proc_debug (proc, "err = %s", safe_strerror (err)); |
c906108c SS |
300 | |
301 | if (running) | |
302 | { | |
303 | proc->aborted = 0; | |
304 | proc->state_valid = proc->state_changed = 0; | |
305 | proc->fetched_regs = 0; | |
306 | } | |
307 | ||
308 | return running; | |
309 | } | |
942fd805 | 310 | |
c906108c SS |
311 | \f |
312 | /* Thread_abort is called on PROC if needed. PROC must be a thread proc. | |
313 | If PROC is deemed `precious', then nothing is done unless FORCE is true. | |
314 | In particular, a thread is precious if it's running (in which case forcing | |
315 | it includes suspending it first), or if it has an exception pending. */ | |
316 | void | |
317 | proc_abort (struct proc *proc, int force) | |
318 | { | |
bf62e5b4 | 319 | gdb_assert (proc_is_thread (proc)); |
c906108c | 320 | |
c5aa993b | 321 | if (!proc->aborted) |
c906108c SS |
322 | { |
323 | struct inf *inf = proc->inf; | |
324 | int running = (proc->cur_sc == 0 && inf->task->cur_sc == 0); | |
325 | ||
326 | if (running && force) | |
327 | { | |
328 | proc->sc = 1; | |
329 | inf_update_suspends (proc->inf); | |
330 | running = 0; | |
8a3fe4f8 | 331 | warning (_("Stopped %s."), proc_string (proc)); |
c906108c SS |
332 | } |
333 | else if (proc == inf->wait.thread && inf->wait.exc.reply && !force) | |
334 | /* An exception is pending on PROC, which don't mess with. */ | |
335 | running = 1; | |
336 | ||
c5aa993b | 337 | if (!running) |
c906108c SS |
338 | /* We only abort the thread if it's not actually running. */ |
339 | { | |
340 | thread_abort (proc->port); | |
341 | proc_debug (proc, "aborted"); | |
342 | proc->aborted = 1; | |
343 | } | |
344 | else | |
345 | proc_debug (proc, "not aborting"); | |
346 | } | |
347 | } | |
348 | ||
349 | /* Make sure that the state field in PROC is up to date, and return a pointer | |
350 | to it, or 0 if something is wrong. If WILL_MODIFY is true, makes sure | |
351 | that the thread is stopped and aborted first, and sets the state_changed | |
352 | field in PROC to true. */ | |
353 | thread_state_t | |
354 | proc_get_state (struct proc *proc, int will_modify) | |
355 | { | |
356 | int was_aborted = proc->aborted; | |
357 | ||
358 | proc_debug (proc, "updating state info%s", | |
359 | will_modify ? " (with intention to modify)" : ""); | |
360 | ||
361 | proc_abort (proc, will_modify); | |
362 | ||
c5aa993b | 363 | if (!was_aborted && proc->aborted) |
c906108c SS |
364 | /* PROC's state may have changed since we last fetched it. */ |
365 | proc->state_valid = 0; | |
366 | ||
c5aa993b | 367 | if (!proc->state_valid) |
c906108c SS |
368 | { |
369 | mach_msg_type_number_t state_size = THREAD_STATE_SIZE; | |
370 | error_t err = | |
d8734c88 MS |
371 | thread_get_state (proc->port, THREAD_STATE_FLAVOR, |
372 | (thread_state_t) &proc->state, &state_size); | |
373 | ||
c906108c SS |
374 | proc_debug (proc, "getting thread state"); |
375 | proc->state_valid = !err; | |
376 | } | |
377 | ||
378 | if (proc->state_valid) | |
379 | { | |
380 | if (will_modify) | |
381 | proc->state_changed = 1; | |
f75c77fc | 382 | return (thread_state_t) &proc->state; |
c906108c SS |
383 | } |
384 | else | |
385 | return 0; | |
386 | } | |
942fd805 | 387 | |
c906108c SS |
388 | \f |
389 | /* Set PORT to PROC's exception port. */ | |
390 | error_t | |
c5aa993b | 391 | proc_get_exception_port (struct proc * proc, mach_port_t * port) |
c906108c SS |
392 | { |
393 | if (proc_is_task (proc)) | |
394 | return task_get_exception_port (proc->port, port); | |
395 | else | |
396 | return thread_get_exception_port (proc->port, port); | |
397 | } | |
398 | ||
399 | /* Set PROC's exception port to PORT. */ | |
400 | error_t | |
c5aa993b | 401 | proc_set_exception_port (struct proc * proc, mach_port_t port) |
c906108c | 402 | { |
a9a758e3 | 403 | proc_debug (proc, "setting exception port: %lu", port); |
c906108c SS |
404 | if (proc_is_task (proc)) |
405 | return task_set_exception_port (proc->port, port); | |
406 | else | |
407 | return thread_set_exception_port (proc->port, port); | |
408 | } | |
409 | ||
410 | /* Get PROC's exception port, cleaning up a bit if proc has died. */ | |
411 | static mach_port_t | |
412 | _proc_get_exc_port (struct proc *proc) | |
413 | { | |
414 | mach_port_t exc_port; | |
415 | error_t err = proc_get_exception_port (proc, &exc_port); | |
416 | ||
417 | if (err) | |
418 | /* PROC must be dead. */ | |
419 | { | |
420 | if (proc->exc_port) | |
421 | mach_port_deallocate (mach_task_self (), proc->exc_port); | |
422 | proc->exc_port = MACH_PORT_NULL; | |
423 | if (proc->saved_exc_port) | |
424 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
425 | proc->saved_exc_port = MACH_PORT_NULL; | |
426 | } | |
427 | ||
428 | return exc_port; | |
429 | } | |
430 | ||
0963b4bd MS |
431 | /* Replace PROC's exception port with EXC_PORT, unless it's already |
432 | been done. Stash away any existing exception port so we can | |
433 | restore it later. */ | |
c906108c SS |
434 | void |
435 | proc_steal_exc_port (struct proc *proc, mach_port_t exc_port) | |
436 | { | |
437 | mach_port_t cur_exc_port = _proc_get_exc_port (proc); | |
438 | ||
439 | if (cur_exc_port) | |
440 | { | |
942fd805 | 441 | error_t err = 0; |
c906108c | 442 | |
a9a758e3 | 443 | proc_debug (proc, "inserting exception port: %lu", exc_port); |
c906108c SS |
444 | |
445 | if (cur_exc_port != exc_port) | |
446 | /* Put in our exception port. */ | |
447 | err = proc_set_exception_port (proc, exc_port); | |
448 | ||
449 | if (err || cur_exc_port == proc->exc_port) | |
450 | /* We previously set the exception port, and it's still set. So we | |
451 | just keep the old saved port which is what the proc set. */ | |
452 | { | |
453 | if (cur_exc_port) | |
454 | mach_port_deallocate (mach_task_self (), cur_exc_port); | |
455 | } | |
456 | else | |
0963b4bd | 457 | /* Keep a copy of PROC's old exception port so it can be restored. */ |
c906108c SS |
458 | { |
459 | if (proc->saved_exc_port) | |
460 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
461 | proc->saved_exc_port = cur_exc_port; | |
462 | } | |
463 | ||
a9a758e3 | 464 | proc_debug (proc, "saved exception port: %lu", proc->saved_exc_port); |
c906108c SS |
465 | |
466 | if (!err) | |
467 | proc->exc_port = exc_port; | |
468 | else | |
8a3fe4f8 | 469 | warning (_("Error setting exception port for %s: %s"), |
dc672865 | 470 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
471 | } |
472 | } | |
473 | ||
474 | /* If we previously replaced PROC's exception port, put back what we | |
475 | found there at the time, unless *our* exception port has since been | |
476 | overwritten, in which case who knows what's going on. */ | |
477 | void | |
478 | proc_restore_exc_port (struct proc *proc) | |
479 | { | |
480 | mach_port_t cur_exc_port = _proc_get_exc_port (proc); | |
481 | ||
482 | if (cur_exc_port) | |
483 | { | |
484 | error_t err = 0; | |
485 | ||
486 | proc_debug (proc, "restoring real exception port"); | |
487 | ||
488 | if (proc->exc_port == cur_exc_port) | |
489 | /* Our's is still there. */ | |
490 | err = proc_set_exception_port (proc, proc->saved_exc_port); | |
491 | ||
492 | if (proc->saved_exc_port) | |
493 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
494 | proc->saved_exc_port = MACH_PORT_NULL; | |
495 | ||
496 | if (!err) | |
497 | proc->exc_port = MACH_PORT_NULL; | |
498 | else | |
8a3fe4f8 | 499 | warning (_("Error setting exception port for %s: %s"), |
dc672865 | 500 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
501 | } |
502 | } | |
942fd805 | 503 | |
c906108c SS |
504 | \f |
505 | /* Turns hardware tracing in PROC on or off when SET is true or false, | |
506 | respectively. Returns true on success. */ | |
507 | int | |
508 | proc_trace (struct proc *proc, int set) | |
509 | { | |
510 | thread_state_t state = proc_get_state (proc, 1); | |
511 | ||
c5aa993b | 512 | if (!state) |
0963b4bd | 513 | return 0; /* The thread must be dead. */ |
c906108c SS |
514 | |
515 | proc_debug (proc, "tracing %s", set ? "on" : "off"); | |
c5aa993b | 516 | |
c906108c SS |
517 | if (set) |
518 | { | |
519 | /* XXX We don't get the exception unless the thread has its own | |
0963b4bd | 520 | exception port???? */ |
c906108c SS |
521 | if (proc->exc_port == MACH_PORT_NULL) |
522 | proc_steal_exc_port (proc, proc->inf->event_port); | |
523 | THREAD_STATE_SET_TRACED (state); | |
524 | } | |
525 | else | |
526 | THREAD_STATE_CLEAR_TRACED (state); | |
527 | ||
528 | return 1; | |
529 | } | |
942fd805 | 530 | |
c906108c SS |
531 | \f |
532 | /* A variable from which to assign new TIDs. */ | |
533 | static int next_thread_id = 1; | |
534 | ||
535 | /* Returns a new proc structure with the given fields. Also adds a | |
536 | notification for PORT becoming dead to be sent to INF's notify port. */ | |
537 | struct proc * | |
538 | make_proc (struct inf *inf, mach_port_t port, int tid) | |
539 | { | |
540 | error_t err; | |
541 | mach_port_t prev_port = MACH_PORT_NULL; | |
8d749320 | 542 | struct proc *proc = XNEW (struct proc); |
c906108c SS |
543 | |
544 | proc->port = port; | |
545 | proc->tid = tid; | |
546 | proc->inf = inf; | |
547 | proc->next = 0; | |
548 | proc->saved_exc_port = MACH_PORT_NULL; | |
549 | proc->exc_port = MACH_PORT_NULL; | |
550 | ||
551 | proc->sc = 0; | |
552 | proc->cur_sc = 0; | |
553 | ||
554 | /* Note that these are all the values for threads; the task simply uses the | |
555 | corresponding field in INF directly. */ | |
556 | proc->run_sc = inf->default_thread_run_sc; | |
557 | proc->pause_sc = inf->default_thread_pause_sc; | |
558 | proc->detach_sc = inf->default_thread_detach_sc; | |
559 | proc->resume_sc = proc->run_sc; | |
560 | ||
561 | proc->aborted = 0; | |
562 | proc->dead = 0; | |
563 | proc->state_valid = 0; | |
564 | proc->state_changed = 0; | |
565 | ||
566 | proc_debug (proc, "is new"); | |
567 | ||
568 | /* Get notified when things die. */ | |
569 | err = | |
c5aa993b | 570 | mach_port_request_notification (mach_task_self (), port, |
c906108c SS |
571 | MACH_NOTIFY_DEAD_NAME, 1, |
572 | inf->event_port, | |
573 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
574 | &prev_port); | |
575 | if (err) | |
a9a758e3 | 576 | warning (_("Couldn't request notification for port %lu: %s"), |
dc672865 | 577 | port, safe_strerror (err)); |
c906108c SS |
578 | else |
579 | { | |
a9a758e3 | 580 | proc_debug (proc, "notifications to: %lu", inf->event_port); |
c906108c SS |
581 | if (prev_port != MACH_PORT_NULL) |
582 | mach_port_deallocate (mach_task_self (), prev_port); | |
583 | } | |
584 | ||
585 | if (inf->want_exceptions) | |
942fd805 MK |
586 | { |
587 | if (proc_is_task (proc)) | |
588 | /* Make the task exception port point to us. */ | |
589 | proc_steal_exc_port (proc, inf->event_port); | |
590 | else | |
591 | /* Just clear thread exception ports -- they default to the | |
592 | task one. */ | |
593 | proc_steal_exc_port (proc, MACH_PORT_NULL); | |
594 | } | |
c906108c SS |
595 | |
596 | return proc; | |
597 | } | |
598 | ||
599 | /* Frees PROC and any resources it uses, and returns the value of PROC's | |
600 | next field. */ | |
601 | struct proc * | |
602 | _proc_free (struct proc *proc) | |
603 | { | |
604 | struct inf *inf = proc->inf; | |
605 | struct proc *next = proc->next; | |
606 | ||
607 | proc_debug (proc, "freeing..."); | |
608 | ||
609 | if (proc == inf->step_thread) | |
610 | /* Turn off single stepping. */ | |
611 | inf_set_step_thread (inf, 0); | |
612 | if (proc == inf->wait.thread) | |
613 | inf_clear_wait (inf); | |
614 | if (proc == inf->signal_thread) | |
615 | inf->signal_thread = 0; | |
616 | ||
617 | if (proc->port != MACH_PORT_NULL) | |
618 | { | |
619 | if (proc->exc_port != MACH_PORT_NULL) | |
620 | /* Restore the original exception port. */ | |
621 | proc_restore_exc_port (proc); | |
622 | if (proc->cur_sc != 0) | |
623 | /* Resume the thread/task. */ | |
624 | { | |
625 | proc->sc = 0; | |
626 | proc_update_sc (proc); | |
627 | } | |
628 | mach_port_deallocate (mach_task_self (), proc->port); | |
629 | } | |
630 | ||
b8c9b27d | 631 | xfree (proc); |
c906108c SS |
632 | return next; |
633 | } | |
942fd805 | 634 | |
c906108c | 635 | \f |
f04a82ef | 636 | static struct inf * |
fba45db2 | 637 | make_inf (void) |
c906108c | 638 | { |
8d749320 | 639 | struct inf *inf = XNEW (struct inf); |
c906108c SS |
640 | |
641 | inf->task = 0; | |
642 | inf->threads = 0; | |
643 | inf->threads_up_to_date = 0; | |
644 | inf->pid = 0; | |
645 | inf->wait.status.kind = TARGET_WAITKIND_SPURIOUS; | |
646 | inf->wait.thread = 0; | |
647 | inf->wait.exc.handler = MACH_PORT_NULL; | |
648 | inf->wait.exc.reply = MACH_PORT_NULL; | |
649 | inf->step_thread = 0; | |
650 | inf->signal_thread = 0; | |
651 | inf->event_port = MACH_PORT_NULL; | |
c906108c | 652 | inf->running = 0; |
cce74817 JM |
653 | inf->stopped = 0; |
654 | inf->nomsg = 1; | |
c906108c SS |
655 | inf->traced = 0; |
656 | inf->no_wait = 0; | |
657 | inf->pending_execs = 0; | |
658 | inf->pause_sc = 1; | |
659 | inf->detach_sc = 0; | |
660 | inf->default_thread_run_sc = 0; | |
661 | inf->default_thread_pause_sc = 0; | |
662 | inf->default_thread_detach_sc = 0; | |
663 | inf->want_signals = 1; /* By default */ | |
664 | inf->want_exceptions = 1; /* By default */ | |
665 | ||
666 | return inf; | |
667 | } | |
668 | ||
942fd805 | 669 | /* Clear INF's target wait status. */ |
c906108c SS |
670 | void |
671 | inf_clear_wait (struct inf *inf) | |
672 | { | |
673 | inf_debug (inf, "clearing wait"); | |
674 | inf->wait.status.kind = TARGET_WAITKIND_SPURIOUS; | |
675 | inf->wait.thread = 0; | |
676 | inf->wait.suppress = 0; | |
677 | if (inf->wait.exc.handler != MACH_PORT_NULL) | |
678 | { | |
679 | mach_port_deallocate (mach_task_self (), inf->wait.exc.handler); | |
680 | inf->wait.exc.handler = MACH_PORT_NULL; | |
681 | } | |
682 | if (inf->wait.exc.reply != MACH_PORT_NULL) | |
683 | { | |
684 | mach_port_deallocate (mach_task_self (), inf->wait.exc.reply); | |
685 | inf->wait.exc.reply = MACH_PORT_NULL; | |
686 | } | |
687 | } | |
942fd805 | 688 | |
c906108c SS |
689 | \f |
690 | void | |
691 | inf_cleanup (struct inf *inf) | |
692 | { | |
693 | inf_debug (inf, "cleanup"); | |
694 | ||
695 | inf_clear_wait (inf); | |
696 | ||
697 | inf_set_pid (inf, -1); | |
698 | inf->pid = 0; | |
cce74817 JM |
699 | inf->running = 0; |
700 | inf->stopped = 0; | |
701 | inf->nomsg = 1; | |
c906108c SS |
702 | inf->traced = 0; |
703 | inf->no_wait = 0; | |
c906108c SS |
704 | inf->pending_execs = 0; |
705 | ||
706 | if (inf->event_port) | |
707 | { | |
708 | mach_port_destroy (mach_task_self (), inf->event_port); | |
709 | inf->event_port = MACH_PORT_NULL; | |
710 | } | |
711 | } | |
712 | ||
713 | void | |
714 | inf_startup (struct inf *inf, int pid) | |
715 | { | |
716 | error_t err; | |
717 | ||
718 | inf_debug (inf, "startup: pid = %d", pid); | |
719 | ||
720 | inf_cleanup (inf); | |
721 | ||
722 | /* Make the port on which we receive all events. */ | |
723 | err = mach_port_allocate (mach_task_self (), | |
724 | MACH_PORT_RIGHT_RECEIVE, &inf->event_port); | |
725 | if (err) | |
8a3fe4f8 | 726 | error (_("Error allocating event port: %s"), safe_strerror (err)); |
c906108c SS |
727 | |
728 | /* Make a send right for it, so we can easily copy it for other people. */ | |
729 | mach_port_insert_right (mach_task_self (), inf->event_port, | |
730 | inf->event_port, MACH_MSG_TYPE_MAKE_SEND); | |
731 | inf_set_pid (inf, pid); | |
732 | } | |
942fd805 | 733 | |
c906108c | 734 | \f |
942fd805 | 735 | /* Close current process, if any, and attach INF to process PORT. */ |
c5aa993b | 736 | void |
c906108c SS |
737 | inf_set_pid (struct inf *inf, pid_t pid) |
738 | { | |
739 | task_t task_port; | |
740 | struct proc *task = inf->task; | |
741 | ||
742 | inf_debug (inf, "setting pid: %d", pid); | |
743 | ||
744 | if (pid < 0) | |
745 | task_port = MACH_PORT_NULL; | |
746 | else | |
747 | { | |
748 | error_t err = proc_pid2task (proc_server, pid, &task_port); | |
d8734c88 | 749 | |
c906108c | 750 | if (err) |
0963b4bd MS |
751 | error (_("Error getting task for pid %d: %s"), |
752 | pid, safe_strerror (err)); | |
c906108c SS |
753 | } |
754 | ||
a9a758e3 | 755 | inf_debug (inf, "setting task: %lu", task_port); |
c906108c SS |
756 | |
757 | if (inf->pause_sc) | |
758 | task_suspend (task_port); | |
759 | ||
760 | if (task && task->port != task_port) | |
761 | { | |
762 | inf->task = 0; | |
0963b4bd MS |
763 | inf_validate_procs (inf); /* Trash all the threads. */ |
764 | _proc_free (task); /* And the task. */ | |
c906108c SS |
765 | } |
766 | ||
767 | if (task_port != MACH_PORT_NULL) | |
768 | { | |
769 | inf->task = make_proc (inf, task_port, PROC_TID_TASK); | |
770 | inf->threads_up_to_date = 0; | |
771 | } | |
772 | ||
773 | if (inf->task) | |
774 | { | |
775 | inf->pid = pid; | |
776 | if (inf->pause_sc) | |
942fd805 MK |
777 | /* Reflect task_suspend above. */ |
778 | inf->task->sc = inf->task->cur_sc = 1; | |
c906108c SS |
779 | } |
780 | else | |
781 | inf->pid = -1; | |
782 | } | |
942fd805 | 783 | |
c906108c | 784 | \f |
cce74817 JM |
785 | /* Validates INF's stopped, nomsg and traced field from the actual |
786 | proc server state. Note that the traced field is only updated from | |
787 | the proc server state if we do not have a message port. If we do | |
788 | have a message port we'd better look at the tracemask itself. */ | |
c906108c | 789 | static void |
cce74817 | 790 | inf_validate_procinfo (struct inf *inf) |
c906108c SS |
791 | { |
792 | char *noise; | |
793 | mach_msg_type_number_t noise_len = 0; | |
794 | struct procinfo *pi; | |
795 | mach_msg_type_number_t pi_len = 0; | |
796 | int info_flags = 0; | |
797 | error_t err = | |
d8734c88 MS |
798 | proc_getprocinfo (proc_server, inf->pid, &info_flags, |
799 | (procinfo_t *) &pi, &pi_len, &noise, &noise_len); | |
c906108c | 800 | |
c5aa993b | 801 | if (!err) |
c906108c SS |
802 | { |
803 | inf->stopped = !!(pi->state & PI_STOPPED); | |
cce74817 JM |
804 | inf->nomsg = !!(pi->state & PI_NOMSG); |
805 | if (inf->nomsg) | |
806 | inf->traced = !!(pi->state & PI_TRACED); | |
a441dfbc ST |
807 | vm_deallocate (mach_task_self (), (vm_address_t) pi, |
808 | pi_len * sizeof (*(procinfo_t) 0)); | |
c906108c | 809 | if (noise_len > 0) |
c5aa993b | 810 | vm_deallocate (mach_task_self (), (vm_address_t) noise, noise_len); |
c906108c SS |
811 | } |
812 | } | |
813 | ||
f90b2b1d JK |
814 | /* Validates INF's task suspend count. If it's higher than we expect, |
815 | verify with the user before `stealing' the extra count. */ | |
c906108c SS |
816 | static void |
817 | inf_validate_task_sc (struct inf *inf) | |
818 | { | |
f90b2b1d JK |
819 | char *noise; |
820 | mach_msg_type_number_t noise_len = 0; | |
821 | struct procinfo *pi; | |
822 | mach_msg_type_number_t pi_len = 0; | |
823 | int info_flags = PI_FETCH_TASKINFO; | |
824 | int suspend_count = -1; | |
825 | error_t err; | |
c906108c | 826 | |
f90b2b1d JK |
827 | retry: |
828 | err = proc_getprocinfo (proc_server, inf->pid, &info_flags, | |
942fd805 | 829 | (procinfo_t *) &pi, &pi_len, &noise, &noise_len); |
c906108c | 830 | if (err) |
f90b2b1d JK |
831 | { |
832 | inf->task->dead = 1; /* oh well */ | |
833 | return; | |
834 | } | |
835 | ||
836 | if (inf->task->cur_sc < pi->taskinfo.suspend_count && suspend_count == -1) | |
837 | { | |
838 | /* The proc server might have suspended the task while stopping | |
839 | it. This happens when the task is handling a traced signal. | |
840 | Refetch the suspend count. The proc server should be | |
841 | finished stopping the task by now. */ | |
842 | suspend_count = pi->taskinfo.suspend_count; | |
843 | goto retry; | |
844 | } | |
845 | ||
846 | suspend_count = pi->taskinfo.suspend_count; | |
847 | ||
a441dfbc ST |
848 | vm_deallocate (mach_task_self (), (vm_address_t) pi, |
849 | pi_len * sizeof (*(procinfo_t) 0)); | |
f90b2b1d | 850 | if (noise_len > 0) |
a441dfbc | 851 | vm_deallocate (mach_task_self (), (vm_address_t) noise, noise_len); |
f90b2b1d JK |
852 | |
853 | if (inf->task->cur_sc < suspend_count) | |
c906108c | 854 | { |
651ce16a PA |
855 | if (!query (_("Pid %d has an additional task suspend count of %d;" |
856 | " clear it? "), inf->pid, | |
857 | suspend_count - inf->task->cur_sc)) | |
8a3fe4f8 | 858 | error (_("Additional task suspend count left untouched.")); |
c906108c | 859 | |
f90b2b1d | 860 | inf->task->cur_sc = suspend_count; |
c906108c SS |
861 | } |
862 | } | |
863 | ||
942fd805 MK |
864 | /* Turns tracing for INF on or off, depending on ON, unless it already |
865 | is. If INF is running, the resume_sc count of INF's threads will | |
866 | be modified, and the signal thread will briefly be run to change | |
867 | the trace state. */ | |
f04a82ef | 868 | static void |
c906108c SS |
869 | inf_set_traced (struct inf *inf, int on) |
870 | { | |
942fd805 MK |
871 | if (on == inf->traced) |
872 | return; | |
873 | ||
874 | if (inf->task && !inf->task->dead) | |
875 | /* Make it take effect immediately. */ | |
876 | { | |
877 | sigset_t mask = on ? ~(sigset_t) 0 : 0; | |
878 | error_t err = | |
c5aa993b | 879 | INF_RESUME_MSGPORT_RPC (inf, msg_set_init_int (msgport, refport, |
942fd805 | 880 | INIT_TRACEMASK, mask)); |
d8734c88 | 881 | |
942fd805 MK |
882 | if (err == EIEIO) |
883 | { | |
884 | if (on) | |
8a3fe4f8 | 885 | warning (_("Can't modify tracing state for pid %d: %s"), |
942fd805 | 886 | inf->pid, "No signal thread"); |
c906108c | 887 | inf->traced = on; |
942fd805 MK |
888 | } |
889 | else if (err) | |
8a3fe4f8 | 890 | warning (_("Can't modify tracing state for pid %d: %s"), |
dc672865 | 891 | inf->pid, safe_strerror (err)); |
942fd805 MK |
892 | else |
893 | inf->traced = on; | |
894 | } | |
895 | else | |
896 | inf->traced = on; | |
c906108c | 897 | } |
942fd805 | 898 | |
c906108c | 899 | \f |
942fd805 MK |
900 | /* Makes all the real suspend count deltas of all the procs in INF |
901 | match the desired values. Careful to always do thread/task suspend | |
902 | counts in the safe order. Returns true if at least one thread is | |
0963b4bd | 903 | thought to be running. */ |
c906108c SS |
904 | int |
905 | inf_update_suspends (struct inf *inf) | |
906 | { | |
907 | struct proc *task = inf->task; | |
d8734c88 | 908 | |
c906108c SS |
909 | /* We don't have to update INF->threads even though we're iterating over it |
910 | because we'll change a thread only if it already has an existing proc | |
911 | entry. */ | |
c906108c SS |
912 | inf_debug (inf, "updating suspend counts"); |
913 | ||
914 | if (task) | |
915 | { | |
916 | struct proc *thread; | |
917 | int task_running = (task->sc == 0), thread_running = 0; | |
918 | ||
919 | if (task->sc > task->cur_sc) | |
920 | /* The task is becoming _more_ suspended; do before any threads. */ | |
921 | task_running = proc_update_sc (task); | |
922 | ||
923 | if (inf->pending_execs) | |
924 | /* When we're waiting for an exec, things may be happening behind our | |
925 | back, so be conservative. */ | |
926 | thread_running = 1; | |
927 | ||
928 | /* Do all the thread suspend counts. */ | |
929 | for (thread = inf->threads; thread; thread = thread->next) | |
930 | thread_running |= proc_update_sc (thread); | |
931 | ||
932 | if (task->sc != task->cur_sc) | |
933 | /* We didn't do the task first, because we wanted to wait for the | |
934 | threads; do it now. */ | |
935 | task_running = proc_update_sc (task); | |
936 | ||
937 | inf_debug (inf, "%srunning...", | |
938 | (thread_running && task_running) ? "" : "not "); | |
939 | ||
940 | inf->running = thread_running && task_running; | |
941 | ||
942 | /* Once any thread has executed some code, we can't depend on the | |
c5aa993b | 943 | threads list any more. */ |
c906108c SS |
944 | if (inf->running) |
945 | inf->threads_up_to_date = 0; | |
946 | ||
947 | return inf->running; | |
948 | } | |
949 | ||
950 | return 0; | |
951 | } | |
942fd805 | 952 | |
c906108c SS |
953 | \f |
954 | /* Converts a GDB pid to a struct proc. */ | |
955 | struct proc * | |
956 | inf_tid_to_thread (struct inf *inf, int tid) | |
957 | { | |
958 | struct proc *thread = inf->threads; | |
959 | ||
960 | while (thread) | |
961 | if (thread->tid == tid) | |
962 | return thread; | |
963 | else | |
964 | thread = thread->next; | |
965 | return 0; | |
966 | } | |
967 | ||
968 | /* Converts a thread port to a struct proc. */ | |
f04a82ef | 969 | static struct proc * |
c906108c SS |
970 | inf_port_to_thread (struct inf *inf, mach_port_t port) |
971 | { | |
972 | struct proc *thread = inf->threads; | |
d8734c88 | 973 | |
c906108c SS |
974 | while (thread) |
975 | if (thread->port == port) | |
976 | return thread; | |
977 | else | |
978 | thread = thread->next; | |
979 | return 0; | |
980 | } | |
942fd805 | 981 | |
05db5edd ST |
982 | /* See gnu-nat.h. */ |
983 | ||
984 | void | |
985 | inf_threads (struct inf *inf, inf_threads_ftype *f, void *arg) | |
986 | { | |
987 | struct proc *thread; | |
988 | ||
989 | for (thread = inf->threads; thread; thread = thread->next) | |
990 | f (thread, arg); | |
991 | } | |
992 | ||
c906108c SS |
993 | \f |
994 | /* Make INF's list of threads be consistent with reality of TASK. */ | |
995 | void | |
996 | inf_validate_procs (struct inf *inf) | |
997 | { | |
c906108c | 998 | thread_array_t threads; |
942fd805 | 999 | mach_msg_type_number_t num_threads, i; |
c906108c SS |
1000 | struct proc *task = inf->task; |
1001 | ||
1002 | /* If no threads are currently running, this function will guarantee that | |
1003 | things are up to date. The exception is if there are zero threads -- | |
1004 | then it is almost certainly in an odd state, and probably some outside | |
1005 | agent will create threads. */ | |
1006 | inf->threads_up_to_date = inf->threads ? !inf->running : 0; | |
1007 | ||
1008 | if (task) | |
1009 | { | |
1010 | error_t err = task_threads (task->port, &threads, &num_threads); | |
d8734c88 | 1011 | |
c906108c SS |
1012 | inf_debug (inf, "fetching threads"); |
1013 | if (err) | |
1014 | /* TASK must be dead. */ | |
1015 | { | |
1016 | task->dead = 1; | |
1017 | task = 0; | |
1018 | } | |
1019 | } | |
1020 | ||
1021 | if (!task) | |
1022 | { | |
1023 | num_threads = 0; | |
1024 | inf_debug (inf, "no task"); | |
1025 | } | |
1026 | ||
1027 | { | |
942fd805 MK |
1028 | /* Make things normally linear. */ |
1029 | mach_msg_type_number_t search_start = 0; | |
c906108c SS |
1030 | /* Which thread in PROCS corresponds to each task thread, & the task. */ |
1031 | struct proc *matched[num_threads + 1]; | |
1032 | /* The last thread in INF->threads, so we can add to the end. */ | |
1033 | struct proc *last = 0; | |
0963b4bd | 1034 | /* The current thread we're considering. */ |
c906108c SS |
1035 | struct proc *thread = inf->threads; |
1036 | ||
4deab737 | 1037 | memset (matched, 0, sizeof (matched)); |
c906108c SS |
1038 | |
1039 | while (thread) | |
1040 | { | |
942fd805 | 1041 | mach_msg_type_number_t left; |
c906108c SS |
1042 | |
1043 | for (i = search_start, left = num_threads; left; i++, left--) | |
1044 | { | |
1045 | if (i >= num_threads) | |
c5aa993b | 1046 | i -= num_threads; /* I wrapped around. */ |
c906108c SS |
1047 | if (thread->port == threads[i]) |
1048 | /* We already know about this thread. */ | |
1049 | { | |
1050 | matched[i] = thread; | |
1051 | last = thread; | |
1052 | thread = thread->next; | |
1053 | search_start++; | |
1054 | break; | |
1055 | } | |
1056 | } | |
1057 | ||
c5aa993b | 1058 | if (!left) |
c906108c SS |
1059 | { |
1060 | proc_debug (thread, "died!"); | |
1061 | thread->port = MACH_PORT_NULL; | |
c5aa993b | 1062 | thread = _proc_free (thread); /* THREAD is dead. */ |
c4c50d37 DJ |
1063 | if (last) |
1064 | last->next = thread; | |
1065 | else | |
1066 | inf->threads = thread; | |
c906108c SS |
1067 | } |
1068 | } | |
1069 | ||
1070 | for (i = 0; i < num_threads; i++) | |
942fd805 MK |
1071 | { |
1072 | if (matched[i]) | |
1073 | /* Throw away the duplicate send right. */ | |
1074 | mach_port_deallocate (mach_task_self (), threads[i]); | |
1075 | else | |
1076 | /* THREADS[I] is a thread we don't know about yet! */ | |
1077 | { | |
617fd3b5 PA |
1078 | ptid_t ptid; |
1079 | ||
942fd805 | 1080 | thread = make_proc (inf, threads[i], next_thread_id++); |
c4c50d37 DJ |
1081 | if (last) |
1082 | last->next = thread; | |
1083 | else | |
1084 | inf->threads = thread; | |
942fd805 | 1085 | last = thread; |
a9a758e3 | 1086 | proc_debug (thread, "new thread: %lu", threads[i]); |
617fd3b5 | 1087 | |
ca08a94c | 1088 | ptid = ptid_build (inf->pid, thread->tid, 0); |
617fd3b5 PA |
1089 | |
1090 | /* Tell GDB's generic thread code. */ | |
1091 | ||
1092 | if (ptid_equal (inferior_ptid, pid_to_ptid (inf->pid))) | |
1093 | /* This is the first time we're hearing about thread | |
1094 | ids, after a fork-child. */ | |
1095 | thread_change_ptid (inferior_ptid, ptid); | |
1096 | else if (inf->pending_execs != 0) | |
1097 | /* This is a shell thread. */ | |
1098 | add_thread_silent (ptid); | |
1099 | else | |
1100 | add_thread (ptid); | |
942fd805 MK |
1101 | } |
1102 | } | |
c906108c | 1103 | |
c5aa993b | 1104 | vm_deallocate (mach_task_self (), |
942fd805 | 1105 | (vm_address_t) threads, (num_threads * sizeof (thread_t))); |
c906108c SS |
1106 | } |
1107 | } | |
942fd805 | 1108 | |
c906108c SS |
1109 | \f |
1110 | /* Makes sure that INF's thread list is synced with the actual process. */ | |
39efb398 | 1111 | int |
c906108c SS |
1112 | inf_update_procs (struct inf *inf) |
1113 | { | |
c5aa993b | 1114 | if (!inf->task) |
c906108c | 1115 | return 0; |
c5aa993b | 1116 | if (!inf->threads_up_to_date) |
c906108c SS |
1117 | inf_validate_procs (inf); |
1118 | return !!inf->task; | |
1119 | } | |
1120 | ||
1121 | /* Sets the resume_sc of each thread in inf. That of RUN_THREAD is set to 0, | |
1122 | and others are set to their run_sc if RUN_OTHERS is true, and otherwise | |
1123 | their pause_sc. */ | |
39efb398 | 1124 | void |
c906108c SS |
1125 | inf_set_threads_resume_sc (struct inf *inf, |
1126 | struct proc *run_thread, int run_others) | |
1127 | { | |
1128 | struct proc *thread; | |
d8734c88 | 1129 | |
c906108c SS |
1130 | inf_update_procs (inf); |
1131 | for (thread = inf->threads; thread; thread = thread->next) | |
1132 | if (thread == run_thread) | |
1133 | thread->resume_sc = 0; | |
1134 | else if (run_others) | |
1135 | thread->resume_sc = thread->run_sc; | |
1136 | else | |
1137 | thread->resume_sc = thread->pause_sc; | |
1138 | } | |
942fd805 | 1139 | |
c906108c SS |
1140 | \f |
1141 | /* Cause INF to continue execution immediately; individual threads may still | |
1142 | be suspended (but their suspend counts will be updated). */ | |
39efb398 | 1143 | void |
c906108c SS |
1144 | inf_resume (struct inf *inf) |
1145 | { | |
1146 | struct proc *thread; | |
1147 | ||
1148 | inf_update_procs (inf); | |
1149 | ||
1150 | for (thread = inf->threads; thread; thread = thread->next) | |
1151 | thread->sc = thread->resume_sc; | |
1152 | ||
1153 | if (inf->task) | |
1154 | { | |
c5aa993b | 1155 | if (!inf->pending_execs) |
c906108c SS |
1156 | /* Try to make sure our task count is correct -- in the case where |
1157 | we're waiting for an exec though, things are too volatile, so just | |
1158 | assume things will be reasonable (which they usually will be). */ | |
1159 | inf_validate_task_sc (inf); | |
1160 | inf->task->sc = 0; | |
1161 | } | |
1162 | ||
1163 | inf_update_suspends (inf); | |
1164 | } | |
1165 | ||
1166 | /* Cause INF to stop execution immediately; individual threads may still | |
1167 | be running. */ | |
39efb398 | 1168 | void |
c906108c SS |
1169 | inf_suspend (struct inf *inf) |
1170 | { | |
1171 | struct proc *thread; | |
1172 | ||
1173 | inf_update_procs (inf); | |
1174 | ||
1175 | for (thread = inf->threads; thread; thread = thread->next) | |
1176 | thread->sc = thread->pause_sc; | |
1177 | ||
1178 | if (inf->task) | |
1179 | inf->task->sc = inf->pause_sc; | |
1180 | ||
1181 | inf_update_suspends (inf); | |
1182 | } | |
942fd805 | 1183 | |
c906108c | 1184 | \f |
942fd805 MK |
1185 | /* INF has one thread PROC that is in single-stepping mode. This |
1186 | function changes it to be PROC, changing any old step_thread to be | |
1187 | a normal one. A PROC of 0 clears any existing value. */ | |
c906108c SS |
1188 | void |
1189 | inf_set_step_thread (struct inf *inf, struct proc *thread) | |
1190 | { | |
bf62e5b4 | 1191 | gdb_assert (!thread || proc_is_thread (thread)); |
c906108c SS |
1192 | |
1193 | if (thread) | |
1194 | inf_debug (inf, "setting step thread: %d/%d", inf->pid, thread->tid); | |
1195 | else | |
1196 | inf_debug (inf, "clearing step thread"); | |
1197 | ||
1198 | if (inf->step_thread != thread) | |
1199 | { | |
1200 | if (inf->step_thread && inf->step_thread->port != MACH_PORT_NULL) | |
c5aa993b | 1201 | if (!proc_trace (inf->step_thread, 0)) |
c906108c SS |
1202 | return; |
1203 | if (thread && proc_trace (thread, 1)) | |
1204 | inf->step_thread = thread; | |
1205 | else | |
1206 | inf->step_thread = 0; | |
1207 | } | |
1208 | } | |
942fd805 | 1209 | |
c906108c SS |
1210 | \f |
1211 | /* Set up the thread resume_sc's so that only the signal thread is running | |
1212 | (plus whatever other thread are set to always run). Returns true if we | |
1213 | did so, or false if we can't find a signal thread. */ | |
39efb398 | 1214 | int |
c906108c SS |
1215 | inf_set_threads_resume_sc_for_signal_thread (struct inf *inf) |
1216 | { | |
1217 | if (inf->signal_thread) | |
1218 | { | |
1219 | inf_set_threads_resume_sc (inf, inf->signal_thread, 0); | |
1220 | return 1; | |
1221 | } | |
1222 | else | |
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | static void | |
1227 | inf_update_signal_thread (struct inf *inf) | |
1228 | { | |
1229 | /* XXX for now we assume that if there's a msgport, the 2nd thread is | |
1230 | the signal thread. */ | |
1231 | inf->signal_thread = inf->threads ? inf->threads->next : 0; | |
1232 | } | |
942fd805 | 1233 | |
c906108c SS |
1234 | \f |
1235 | /* Detachs from INF's inferior task, letting it run once again... */ | |
1236 | void | |
1237 | inf_detach (struct inf *inf) | |
1238 | { | |
1239 | struct proc *task = inf->task; | |
1240 | ||
1241 | inf_debug (inf, "detaching..."); | |
1242 | ||
1243 | inf_clear_wait (inf); | |
1244 | inf_set_step_thread (inf, 0); | |
1245 | ||
1246 | if (task) | |
1247 | { | |
1248 | struct proc *thread; | |
1249 | ||
cce74817 JM |
1250 | inf_validate_procinfo (inf); |
1251 | ||
c906108c SS |
1252 | inf_set_traced (inf, 0); |
1253 | if (inf->stopped) | |
cce74817 JM |
1254 | { |
1255 | if (inf->nomsg) | |
1256 | inf_continue (inf); | |
1257 | else | |
a493e3e2 | 1258 | inf_signal (inf, GDB_SIGNAL_0); |
cce74817 | 1259 | } |
c906108c SS |
1260 | |
1261 | proc_restore_exc_port (task); | |
1262 | task->sc = inf->detach_sc; | |
1263 | ||
1264 | for (thread = inf->threads; thread; thread = thread->next) | |
1265 | { | |
1266 | proc_restore_exc_port (thread); | |
1267 | thread->sc = thread->detach_sc; | |
1268 | } | |
1269 | ||
1270 | inf_update_suspends (inf); | |
1271 | } | |
1272 | ||
1273 | inf_cleanup (inf); | |
1274 | } | |
1275 | ||
942fd805 MK |
1276 | /* Attaches INF to the process with process id PID, returning it in a |
1277 | suspended state suitable for debugging. */ | |
c906108c SS |
1278 | void |
1279 | inf_attach (struct inf *inf, int pid) | |
1280 | { | |
1281 | inf_debug (inf, "attaching: %d", pid); | |
1282 | ||
1283 | if (inf->pid) | |
1284 | inf_detach (inf); | |
1285 | ||
1286 | inf_startup (inf, pid); | |
1287 | } | |
942fd805 | 1288 | |
c906108c | 1289 | \f |
0963b4bd | 1290 | /* Makes sure that we've got our exception ports entrenched in the process. */ |
c5aa993b JM |
1291 | void |
1292 | inf_steal_exc_ports (struct inf *inf) | |
c906108c SS |
1293 | { |
1294 | struct proc *thread; | |
1295 | ||
1296 | inf_debug (inf, "stealing exception ports"); | |
1297 | ||
0963b4bd | 1298 | inf_set_step_thread (inf, 0); /* The step thread is special. */ |
c906108c SS |
1299 | |
1300 | proc_steal_exc_port (inf->task, inf->event_port); | |
1301 | for (thread = inf->threads; thread; thread = thread->next) | |
1302 | proc_steal_exc_port (thread, MACH_PORT_NULL); | |
1303 | } | |
1304 | ||
1305 | /* Makes sure the process has its own exception ports. */ | |
c5aa993b JM |
1306 | void |
1307 | inf_restore_exc_ports (struct inf *inf) | |
c906108c SS |
1308 | { |
1309 | struct proc *thread; | |
1310 | ||
1311 | inf_debug (inf, "restoring exception ports"); | |
1312 | ||
0963b4bd | 1313 | inf_set_step_thread (inf, 0); /* The step thread is special. */ |
c906108c SS |
1314 | |
1315 | proc_restore_exc_port (inf->task); | |
1316 | for (thread = inf->threads; thread; thread = thread->next) | |
1317 | proc_restore_exc_port (thread); | |
1318 | } | |
942fd805 | 1319 | |
c906108c SS |
1320 | \f |
1321 | /* Deliver signal SIG to INF. If INF is stopped, delivering a signal, even | |
1322 | signal 0, will continue it. INF is assumed to be in a paused state, and | |
1323 | the resume_sc's of INF's threads may be affected. */ | |
1324 | void | |
2ea28649 | 1325 | inf_signal (struct inf *inf, enum gdb_signal sig) |
c906108c SS |
1326 | { |
1327 | error_t err = 0; | |
2ea28649 | 1328 | int host_sig = gdb_signal_to_host (sig); |
c906108c | 1329 | |
2ea28649 | 1330 | #define NAME gdb_signal_to_name (sig) |
c906108c SS |
1331 | |
1332 | if (host_sig >= _NSIG) | |
1333 | /* A mach exception. Exceptions are encoded in the signal space by | |
1334 | putting them after _NSIG; this assumes they're positive (and not | |
1335 | extremely large)! */ | |
1336 | { | |
1337 | struct inf_wait *w = &inf->wait; | |
d8734c88 | 1338 | |
c906108c SS |
1339 | if (w->status.kind == TARGET_WAITKIND_STOPPED |
1340 | && w->status.value.sig == sig | |
1341 | && w->thread && !w->thread->aborted) | |
1342 | /* We're passing through the last exception we received. This is | |
1343 | kind of bogus, because exceptions are per-thread whereas gdb | |
1344 | treats signals as per-process. We just forward the exception to | |
1345 | the correct handler, even it's not for the same thread as TID -- | |
1346 | i.e., we pretend it's global. */ | |
1347 | { | |
1348 | struct exc_state *e = &w->exc; | |
d8734c88 | 1349 | |
c906108c | 1350 | inf_debug (inf, "passing through exception:" |
a9a758e3 | 1351 | " task = %lu, thread = %lu, exc = %d" |
c906108c SS |
1352 | ", code = %d, subcode = %d", |
1353 | w->thread->port, inf->task->port, | |
1354 | e->exception, e->code, e->subcode); | |
1355 | err = | |
1356 | exception_raise_request (e->handler, | |
1357 | e->reply, MACH_MSG_TYPE_MOVE_SEND_ONCE, | |
1358 | w->thread->port, inf->task->port, | |
1359 | e->exception, e->code, e->subcode); | |
1360 | } | |
1361 | else | |
8a3fe4f8 | 1362 | error (_("Can't forward spontaneous exception (%s)."), NAME); |
c906108c SS |
1363 | } |
1364 | else | |
1365 | /* A Unix signal. */ | |
c5aa993b JM |
1366 | if (inf->stopped) |
1367 | /* The process is stopped and expecting a signal. Just send off a | |
1368 | request and let it get handled when we resume everything. */ | |
1369 | { | |
1370 | inf_debug (inf, "sending %s to stopped process", NAME); | |
1371 | err = | |
1372 | INF_MSGPORT_RPC (inf, | |
1373 | msg_sig_post_untraced_request (msgport, | |
1374 | inf->event_port, | |
1375 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
1376 | host_sig, 0, | |
1377 | refport)); | |
1378 | if (!err) | |
1379 | /* Posting an untraced signal automatically continues it. | |
1380 | We clear this here rather than when we get the reply | |
1381 | because we'd rather assume it's not stopped when it | |
1382 | actually is, than the reverse. */ | |
1383 | inf->stopped = 0; | |
1384 | } | |
1385 | else | |
1386 | /* It's not expecting it. We have to let just the signal thread | |
1387 | run, and wait for it to get into a reasonable state before we | |
1388 | can continue the rest of the process. When we finally resume the | |
1389 | process the signal we request will be the very first thing that | |
0963b4bd | 1390 | happens. */ |
c5aa993b | 1391 | { |
942fd805 MK |
1392 | inf_debug (inf, "sending %s to unstopped process" |
1393 | " (so resuming signal thread)", NAME); | |
c5aa993b | 1394 | err = |
942fd805 MK |
1395 | INF_RESUME_MSGPORT_RPC (inf, |
1396 | msg_sig_post_untraced (msgport, host_sig, | |
1397 | 0, refport)); | |
c5aa993b | 1398 | } |
c906108c SS |
1399 | |
1400 | if (err == EIEIO) | |
0963b4bd | 1401 | /* Can't do too much... */ |
8a3fe4f8 | 1402 | warning (_("Can't deliver signal %s: No signal thread."), NAME); |
c906108c | 1403 | else if (err) |
8a3fe4f8 | 1404 | warning (_("Delivering signal %s: %s"), NAME, safe_strerror (err)); |
c906108c SS |
1405 | |
1406 | #undef NAME | |
1407 | } | |
942fd805 | 1408 | |
c906108c | 1409 | \f |
cce74817 JM |
1410 | /* Continue INF without delivering a signal. This is meant to be used |
1411 | when INF does not have a message port. */ | |
1412 | void | |
1413 | inf_continue (struct inf *inf) | |
1414 | { | |
1415 | process_t proc; | |
1416 | error_t err = proc_pid2proc (proc_server, inf->pid, &proc); | |
1417 | ||
c5aa993b | 1418 | if (!err) |
cce74817 JM |
1419 | { |
1420 | inf_debug (inf, "continuing process"); | |
1421 | ||
1422 | err = proc_mark_cont (proc); | |
c5aa993b | 1423 | if (!err) |
cce74817 JM |
1424 | { |
1425 | struct proc *thread; | |
1426 | ||
1427 | for (thread = inf->threads; thread; thread = thread->next) | |
1428 | thread_resume (thread->port); | |
c5aa993b | 1429 | |
cce74817 JM |
1430 | inf->stopped = 0; |
1431 | } | |
1432 | } | |
1433 | ||
1434 | if (err) | |
8a3fe4f8 | 1435 | warning (_("Can't continue process: %s"), safe_strerror (err)); |
cce74817 | 1436 | } |
942fd805 | 1437 | |
cce74817 | 1438 | \f |
c906108c | 1439 | /* The inferior used for all gdb target ops. */ |
c289427b | 1440 | struct inf *gnu_current_inf = 0; |
c906108c SS |
1441 | |
1442 | /* The inferior being waited for by gnu_wait. Since GDB is decidely not | |
1443 | multi-threaded, we don't bother to lock this. */ | |
1444 | struct inf *waiting_inf; | |
1445 | ||
0963b4bd | 1446 | /* Wait for something to happen in the inferior, returning what in STATUS. */ |
39f77062 | 1447 | static ptid_t |
117de6a9 | 1448 | gnu_wait (struct target_ops *ops, |
47608cb1 | 1449 | ptid_t ptid, struct target_waitstatus *status, int options) |
c906108c | 1450 | { |
c5aa993b JM |
1451 | struct msg |
1452 | { | |
1453 | mach_msg_header_t hdr; | |
1454 | mach_msg_type_t type; | |
1455 | int data[8000]; | |
942fd805 | 1456 | } msg; |
c906108c SS |
1457 | error_t err; |
1458 | struct proc *thread; | |
c289427b | 1459 | struct inf *inf = gnu_current_inf; |
c906108c | 1460 | |
942fd805 MK |
1461 | extern int exc_server (mach_msg_header_t *, mach_msg_header_t *); |
1462 | extern int msg_reply_server (mach_msg_header_t *, mach_msg_header_t *); | |
1463 | extern int notify_server (mach_msg_header_t *, mach_msg_header_t *); | |
1464 | extern int process_reply_server (mach_msg_header_t *, mach_msg_header_t *); | |
1465 | ||
bf62e5b4 | 1466 | gdb_assert (inf->task); |
c906108c SS |
1467 | |
1468 | if (!inf->threads && !inf->pending_execs) | |
1469 | /* No threads! Assume that maybe some outside agency is frobbing our | |
1470 | task, and really look for new threads. If we can't find any, just tell | |
1471 | the user to try again later. */ | |
1472 | { | |
1473 | inf_validate_procs (inf); | |
1474 | if (!inf->threads && !inf->task->dead) | |
8a3fe4f8 | 1475 | error (_("There are no threads; try again later.")); |
c906108c SS |
1476 | } |
1477 | ||
1478 | waiting_inf = inf; | |
1479 | ||
617fd3b5 | 1480 | inf_debug (inf, "waiting for: %s", target_pid_to_str (ptid)); |
c906108c | 1481 | |
c5aa993b | 1482 | rewait: |
c906108c SS |
1483 | if (proc_wait_pid != inf->pid && !inf->no_wait) |
1484 | /* Always get information on events from the proc server. */ | |
1485 | { | |
1486 | inf_debug (inf, "requesting wait on pid %d", inf->pid); | |
1487 | ||
1488 | if (proc_wait_pid) | |
1489 | /* The proc server is single-threaded, and only allows a single | |
0963b4bd | 1490 | outstanding wait request, so we have to cancel the previous one. */ |
c906108c SS |
1491 | { |
1492 | inf_debug (inf, "cancelling previous wait on pid %d", proc_wait_pid); | |
1493 | interrupt_operation (proc_server, 0); | |
1494 | } | |
1495 | ||
1496 | err = | |
1497 | proc_wait_request (proc_server, inf->event_port, inf->pid, WUNTRACED); | |
1498 | if (err) | |
8a3fe4f8 | 1499 | warning (_("wait request failed: %s"), safe_strerror (err)); |
c906108c SS |
1500 | else |
1501 | { | |
1502 | inf_debug (inf, "waits pending: %d", proc_waits_pending); | |
1503 | proc_wait_pid = inf->pid; | |
942fd805 MK |
1504 | /* Even if proc_waits_pending was > 0 before, we still won't |
1505 | get any other replies, because it was either from a | |
1506 | different INF, or a different process attached to INF -- | |
1507 | and the event port, which is the wait reply port, changes | |
0963b4bd | 1508 | when you switch processes. */ |
c906108c SS |
1509 | proc_waits_pending = 1; |
1510 | } | |
1511 | } | |
1512 | ||
1513 | inf_clear_wait (inf); | |
1514 | ||
1515 | /* What can happen? (1) Dead name notification; (2) Exceptions arrive; | |
1516 | (3) wait reply from the proc server. */ | |
1517 | ||
1518 | inf_debug (inf, "waiting for an event..."); | |
1519 | err = mach_msg (&msg.hdr, MACH_RCV_MSG | MACH_RCV_INTERRUPT, | |
1520 | 0, sizeof (struct msg), inf->event_port, | |
1521 | MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); | |
1522 | ||
1523 | /* Re-suspend the task. */ | |
1524 | inf_suspend (inf); | |
1525 | ||
1526 | if (!inf->task && inf->pending_execs) | |
1527 | /* When doing an exec, it's possible that the old task wasn't reused | |
1528 | (e.g., setuid execs). So if the task seems to have disappeared, | |
1529 | attempt to refetch it, as the pid should still be the same. */ | |
1530 | inf_set_pid (inf, inf->pid); | |
1531 | ||
1532 | if (err == EMACH_RCV_INTERRUPTED) | |
1533 | inf_debug (inf, "interrupted"); | |
1534 | else if (err) | |
8a3fe4f8 | 1535 | error (_("Couldn't wait for an event: %s"), safe_strerror (err)); |
c906108c SS |
1536 | else |
1537 | { | |
c5aa993b JM |
1538 | struct |
1539 | { | |
1540 | mach_msg_header_t hdr; | |
1541 | mach_msg_type_t err_type; | |
1542 | kern_return_t err; | |
1543 | char noise[200]; | |
1544 | } | |
1545 | reply; | |
c906108c SS |
1546 | |
1547 | inf_debug (inf, "event: msgid = %d", msg.hdr.msgh_id); | |
1548 | ||
1549 | /* Handle what we got. */ | |
c5aa993b JM |
1550 | if (!notify_server (&msg.hdr, &reply.hdr) |
1551 | && !exc_server (&msg.hdr, &reply.hdr) | |
1552 | && !process_reply_server (&msg.hdr, &reply.hdr) | |
1553 | && !msg_reply_server (&msg.hdr, &reply.hdr)) | |
c906108c | 1554 | /* Whatever it is, it's something strange. */ |
8a3fe4f8 | 1555 | error (_("Got a strange event, msg id = %d."), msg.hdr.msgh_id); |
c906108c SS |
1556 | |
1557 | if (reply.err) | |
8a3fe4f8 | 1558 | error (_("Handling event, msgid = %d: %s"), |
dc672865 | 1559 | msg.hdr.msgh_id, safe_strerror (reply.err)); |
c906108c SS |
1560 | } |
1561 | ||
1562 | if (inf->pending_execs) | |
1563 | /* We're waiting for the inferior to finish execing. */ | |
1564 | { | |
1565 | struct inf_wait *w = &inf->wait; | |
1566 | enum target_waitkind kind = w->status.kind; | |
1567 | ||
1568 | if (kind == TARGET_WAITKIND_SPURIOUS) | |
1569 | /* Since gdb is actually counting the number of times the inferior | |
1570 | stops, expecting one stop per exec, we only return major events | |
1571 | while execing. */ | |
1572 | { | |
1573 | w->suppress = 1; | |
c82f56d9 | 1574 | inf_debug (inf, "pending_execs, ignoring minor event"); |
c906108c SS |
1575 | } |
1576 | else if (kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 | 1577 | && w->status.value.sig == GDB_SIGNAL_TRAP) |
c906108c SS |
1578 | /* Ah hah! A SIGTRAP from the inferior while starting up probably |
1579 | means we've succesfully completed an exec! */ | |
1580 | { | |
c82f56d9 | 1581 | inf_debug (inf, "one pending exec completed"); |
c906108c SS |
1582 | } |
1583 | else if (kind == TARGET_WAITKIND_STOPPED) | |
1584 | /* It's possible that this signal is because of a crashed process | |
1585 | being handled by the hurd crash server; in this case, the process | |
1586 | will have an extra task suspend, which we need to know about. | |
1587 | Since the code in inf_resume that normally checks for this is | |
1588 | disabled while INF->pending_execs, we do the check here instead. */ | |
1589 | inf_validate_task_sc (inf); | |
1590 | } | |
1591 | ||
1592 | if (inf->wait.suppress) | |
1593 | /* Some totally spurious event happened that we don't consider | |
1594 | worth returning to gdb. Just keep waiting. */ | |
1595 | { | |
1596 | inf_debug (inf, "suppressing return, rewaiting..."); | |
1597 | inf_resume (inf); | |
1598 | goto rewait; | |
1599 | } | |
1600 | ||
1601 | /* Pass back out our results. */ | |
98d346c3 | 1602 | memcpy (status, &inf->wait.status, sizeof (*status)); |
c906108c SS |
1603 | |
1604 | thread = inf->wait.thread; | |
1605 | if (thread) | |
ca08a94c | 1606 | ptid = ptid_build (inf->pid, thread->tid, 0); |
617fd3b5 PA |
1607 | else if (ptid_equal (ptid, minus_one_ptid)) |
1608 | thread = inf_tid_to_thread (inf, -1); | |
c906108c | 1609 | else |
ca08a94c | 1610 | thread = inf_tid_to_thread (inf, ptid_get_lwp (ptid)); |
c906108c SS |
1611 | |
1612 | if (!thread || thread->port == MACH_PORT_NULL) | |
942fd805 MK |
1613 | { |
1614 | /* TID is dead; try and find a new thread. */ | |
1615 | if (inf_update_procs (inf) && inf->threads) | |
ca08a94c | 1616 | ptid = ptid_build (inf->pid, inf->threads->tid, 0); /* The first |
0963b4bd MS |
1617 | available |
1618 | thread. */ | |
942fd805 | 1619 | else |
617fd3b5 | 1620 | ptid = inferior_ptid; /* let wait_for_inferior handle exit case */ |
942fd805 | 1621 | } |
c906108c | 1622 | |
617fd3b5 PA |
1623 | if (thread |
1624 | && !ptid_equal (ptid, minus_one_ptid) | |
1625 | && status->kind != TARGET_WAITKIND_SPURIOUS | |
c906108c | 1626 | && inf->pause_sc == 0 && thread->pause_sc == 0) |
942fd805 MK |
1627 | /* If something actually happened to THREAD, make sure we |
1628 | suspend it. */ | |
c906108c SS |
1629 | { |
1630 | thread->sc = 1; | |
1631 | inf_update_suspends (inf); | |
c5aa993b | 1632 | } |
c906108c | 1633 | |
617fd3b5 PA |
1634 | inf_debug (inf, "returning ptid = %s, status = %s (%d)", |
1635 | target_pid_to_str (ptid), | |
c906108c SS |
1636 | status->kind == TARGET_WAITKIND_EXITED ? "EXITED" |
1637 | : status->kind == TARGET_WAITKIND_STOPPED ? "STOPPED" | |
1638 | : status->kind == TARGET_WAITKIND_SIGNALLED ? "SIGNALLED" | |
1639 | : status->kind == TARGET_WAITKIND_LOADED ? "LOADED" | |
1640 | : status->kind == TARGET_WAITKIND_SPURIOUS ? "SPURIOUS" | |
1641 | : "?", | |
1642 | status->value.integer); | |
1643 | ||
617fd3b5 | 1644 | return ptid; |
c906108c | 1645 | } |
942fd805 | 1646 | |
c906108c SS |
1647 | \f |
1648 | /* The rpc handler called by exc_server. */ | |
1649 | error_t | |
1650 | S_exception_raise_request (mach_port_t port, mach_port_t reply_port, | |
1651 | thread_t thread_port, task_t task_port, | |
1652 | int exception, int code, int subcode) | |
1653 | { | |
1654 | struct inf *inf = waiting_inf; | |
1655 | struct proc *thread = inf_port_to_thread (inf, thread_port); | |
1656 | ||
1657 | inf_debug (waiting_inf, | |
a9a758e3 | 1658 | "thread = %lu, task = %lu, exc = %d, code = %d, subcode = %d", |
942fd805 | 1659 | thread_port, task_port, exception, code, subcode); |
c906108c SS |
1660 | |
1661 | if (!thread) | |
1662 | /* We don't know about thread? */ | |
1663 | { | |
1664 | inf_update_procs (inf); | |
1665 | thread = inf_port_to_thread (inf, thread_port); | |
1666 | if (!thread) | |
1667 | /* Give up, the generating thread is gone. */ | |
1668 | return 0; | |
1669 | } | |
1670 | ||
1671 | mach_port_deallocate (mach_task_self (), thread_port); | |
1672 | mach_port_deallocate (mach_task_self (), task_port); | |
1673 | ||
c5aa993b | 1674 | if (!thread->aborted) |
c906108c SS |
1675 | /* THREAD hasn't been aborted since this exception happened (abortion |
1676 | clears any exception state), so it must be real. */ | |
1677 | { | |
1678 | /* Store away the details; this will destroy any previous info. */ | |
1679 | inf->wait.thread = thread; | |
1680 | ||
1681 | inf->wait.status.kind = TARGET_WAITKIND_STOPPED; | |
1682 | ||
1683 | if (exception == EXC_BREAKPOINT) | |
1684 | /* GDB likes to get SIGTRAP for breakpoints. */ | |
1685 | { | |
a493e3e2 | 1686 | inf->wait.status.value.sig = GDB_SIGNAL_TRAP; |
c906108c SS |
1687 | mach_port_deallocate (mach_task_self (), reply_port); |
1688 | } | |
1689 | else | |
1690 | /* Record the exception so that we can forward it later. */ | |
1691 | { | |
1692 | if (thread->exc_port == port) | |
1693 | { | |
a9a758e3 | 1694 | inf_debug (waiting_inf, "Handler is thread exception port <%lu>", |
c906108c SS |
1695 | thread->saved_exc_port); |
1696 | inf->wait.exc.handler = thread->saved_exc_port; | |
1697 | } | |
1698 | else | |
1699 | { | |
a9a758e3 | 1700 | inf_debug (waiting_inf, "Handler is task exception port <%lu>", |
c906108c SS |
1701 | inf->task->saved_exc_port); |
1702 | inf->wait.exc.handler = inf->task->saved_exc_port; | |
bf62e5b4 | 1703 | gdb_assert (inf->task->exc_port == port); |
c906108c SS |
1704 | } |
1705 | if (inf->wait.exc.handler != MACH_PORT_NULL) | |
0963b4bd | 1706 | /* Add a reference to the exception handler. */ |
c906108c SS |
1707 | mach_port_mod_refs (mach_task_self (), |
1708 | inf->wait.exc.handler, MACH_PORT_RIGHT_SEND, | |
1709 | 1); | |
1710 | ||
1711 | inf->wait.exc.exception = exception; | |
1712 | inf->wait.exc.code = code; | |
1713 | inf->wait.exc.subcode = subcode; | |
1714 | inf->wait.exc.reply = reply_port; | |
1715 | ||
0963b4bd MS |
1716 | /* Exceptions are encoded in the signal space by putting |
1717 | them after _NSIG; this assumes they're positive (and not | |
1718 | extremely large)! */ | |
c906108c | 1719 | inf->wait.status.value.sig = |
2ea28649 | 1720 | gdb_signal_from_host (_NSIG + exception); |
c906108c SS |
1721 | } |
1722 | } | |
1723 | else | |
1724 | /* A supppressed exception, which ignore. */ | |
1725 | { | |
1726 | inf->wait.suppress = 1; | |
1727 | mach_port_deallocate (mach_task_self (), reply_port); | |
1728 | } | |
1729 | ||
1730 | return 0; | |
1731 | } | |
942fd805 | 1732 | |
c906108c SS |
1733 | \f |
1734 | /* Fill in INF's wait field after a task has died without giving us more | |
1735 | detailed information. */ | |
f04a82ef | 1736 | static void |
c906108c SS |
1737 | inf_task_died_status (struct inf *inf) |
1738 | { | |
0963b4bd MS |
1739 | warning (_("Pid %d died with unknown exit status, using SIGKILL."), |
1740 | inf->pid); | |
c906108c | 1741 | inf->wait.status.kind = TARGET_WAITKIND_SIGNALLED; |
a493e3e2 | 1742 | inf->wait.status.value.sig = GDB_SIGNAL_KILL; |
c906108c SS |
1743 | } |
1744 | ||
1745 | /* Notify server routines. The only real one is dead name notification. */ | |
1746 | error_t | |
1747 | do_mach_notify_dead_name (mach_port_t notify, mach_port_t dead_port) | |
1748 | { | |
1749 | struct inf *inf = waiting_inf; | |
1750 | ||
a9a758e3 | 1751 | inf_debug (waiting_inf, "port = %lu", dead_port); |
c906108c SS |
1752 | |
1753 | if (inf->task && inf->task->port == dead_port) | |
1754 | { | |
1755 | proc_debug (inf->task, "is dead"); | |
1756 | inf->task->port = MACH_PORT_NULL; | |
1757 | if (proc_wait_pid == inf->pid) | |
1758 | /* We have a wait outstanding on the process, which will return more | |
1759 | detailed information, so delay until we get that. */ | |
1760 | inf->wait.suppress = 1; | |
1761 | else | |
1762 | /* We never waited for the process (maybe it wasn't a child), so just | |
1763 | pretend it got a SIGKILL. */ | |
1764 | inf_task_died_status (inf); | |
1765 | } | |
1766 | else | |
1767 | { | |
1768 | struct proc *thread = inf_port_to_thread (inf, dead_port); | |
d8734c88 | 1769 | |
c906108c SS |
1770 | if (thread) |
1771 | { | |
1772 | proc_debug (thread, "is dead"); | |
1773 | thread->port = MACH_PORT_NULL; | |
1774 | } | |
f90b2b1d JK |
1775 | |
1776 | if (inf->task->dead) | |
1777 | /* Since the task is dead, its threads are dying with it. */ | |
1778 | inf->wait.suppress = 1; | |
c906108c SS |
1779 | } |
1780 | ||
1781 | mach_port_deallocate (mach_task_self (), dead_port); | |
0963b4bd | 1782 | inf->threads_up_to_date = 0; /* Just in case. */ |
c906108c SS |
1783 | |
1784 | return 0; | |
1785 | } | |
942fd805 | 1786 | |
c906108c | 1787 | \f |
3398af6a | 1788 | #define ILL_RPC(fun, ...) \ |
842c05cd | 1789 | extern kern_return_t fun (__VA_ARGS__); \ |
3398af6a TS |
1790 | kern_return_t fun (__VA_ARGS__) \ |
1791 | { \ | |
1792 | warning (_("illegal rpc: %s"), #fun); \ | |
1793 | return 0; \ | |
1794 | } | |
942fd805 | 1795 | |
3398af6a TS |
1796 | ILL_RPC (do_mach_notify_no_senders, |
1797 | mach_port_t notify, mach_port_mscount_t count) | |
1798 | ILL_RPC (do_mach_notify_port_deleted, | |
1799 | mach_port_t notify, mach_port_t name) | |
1800 | ILL_RPC (do_mach_notify_msg_accepted, | |
1801 | mach_port_t notify, mach_port_t name) | |
1802 | ILL_RPC (do_mach_notify_port_destroyed, | |
1803 | mach_port_t notify, mach_port_t name) | |
1804 | ILL_RPC (do_mach_notify_send_once, | |
1805 | mach_port_t notify) | |
c906108c SS |
1806 | \f |
1807 | /* Process_reply server routines. We only use process_wait_reply. */ | |
1808 | ||
1809 | error_t | |
1810 | S_proc_wait_reply (mach_port_t reply, error_t err, | |
1811 | int status, int sigcode, rusage_t rusage, pid_t pid) | |
1812 | { | |
1813 | struct inf *inf = waiting_inf; | |
1814 | ||
1815 | inf_debug (inf, "err = %s, pid = %d, status = 0x%x, sigcode = %d", | |
dc672865 | 1816 | err ? safe_strerror (err) : "0", pid, status, sigcode); |
c906108c SS |
1817 | |
1818 | if (err && proc_wait_pid && (!inf->task || !inf->task->port)) | |
1819 | /* Ack. The task has died, but the task-died notification code didn't | |
1820 | tell anyone because it thought a more detailed reply from the | |
1821 | procserver was forthcoming. However, we now learn that won't | |
1822 | happen... So we have to act like the task just died, and this time, | |
1823 | tell the world. */ | |
1824 | inf_task_died_status (inf); | |
1825 | ||
1826 | if (--proc_waits_pending == 0) | |
1827 | /* PROC_WAIT_PID represents the most recent wait. We will always get | |
1828 | replies in order because the proc server is single threaded. */ | |
1829 | proc_wait_pid = 0; | |
1830 | ||
1831 | inf_debug (inf, "waits pending now: %d", proc_waits_pending); | |
1832 | ||
1833 | if (err) | |
1834 | { | |
1835 | if (err != EINTR) | |
1836 | { | |
0963b4bd MS |
1837 | warning (_("Can't wait for pid %d: %s"), |
1838 | inf->pid, safe_strerror (err)); | |
c906108c SS |
1839 | inf->no_wait = 1; |
1840 | ||
1841 | /* Since we can't see the inferior's signals, don't trap them. */ | |
1842 | inf_set_traced (inf, 0); | |
1843 | } | |
1844 | } | |
1845 | else if (pid == inf->pid) | |
1846 | { | |
1847 | store_waitstatus (&inf->wait.status, status); | |
1848 | if (inf->wait.status.kind == TARGET_WAITKIND_STOPPED) | |
1849 | /* The process has sent us a signal, and stopped itself in a sane | |
1850 | state pending our actions. */ | |
1851 | { | |
1852 | inf_debug (inf, "process has stopped itself"); | |
1853 | inf->stopped = 1; | |
1854 | } | |
1855 | } | |
1856 | else | |
1857 | inf->wait.suppress = 1; /* Something odd happened. Ignore. */ | |
1858 | ||
1859 | return 0; | |
1860 | } | |
1861 | ||
3398af6a TS |
1862 | ILL_RPC (S_proc_setmsgport_reply, |
1863 | mach_port_t reply_port, kern_return_t return_code, | |
1864 | mach_port_t oldmsgport) | |
1865 | ILL_RPC (S_proc_getmsgport_reply, | |
1866 | mach_port_t reply_port, kern_return_t return_code, | |
1867 | mach_port_t msgports) | |
1868 | ILL_RPC (S_proc_pid2task_reply, | |
1869 | mach_port_t reply_port, kern_return_t return_code, mach_port_t task) | |
1870 | ILL_RPC (S_proc_task2pid_reply, | |
1871 | mach_port_t reply_port, kern_return_t return_code, pid_t pid) | |
1872 | ILL_RPC (S_proc_task2proc_reply, | |
1873 | mach_port_t reply_port, kern_return_t return_code, mach_port_t proc) | |
1874 | ILL_RPC (S_proc_proc2task_reply, | |
1875 | mach_port_t reply_port, kern_return_t return_code, mach_port_t task) | |
1876 | ILL_RPC (S_proc_pid2proc_reply, | |
1877 | mach_port_t reply_port, kern_return_t return_code, mach_port_t proc) | |
1878 | ILL_RPC (S_proc_getprocinfo_reply, | |
1879 | mach_port_t reply_port, kern_return_t return_code, | |
1880 | int flags, procinfo_t procinfo, mach_msg_type_number_t procinfoCnt, | |
1881 | data_t threadwaits, mach_msg_type_number_t threadwaitsCnt) | |
1882 | ILL_RPC (S_proc_getprocargs_reply, | |
1883 | mach_port_t reply_port, kern_return_t return_code, | |
1884 | data_t procargs, mach_msg_type_number_t procargsCnt) | |
1885 | ILL_RPC (S_proc_getprocenv_reply, | |
1886 | mach_port_t reply_port, kern_return_t return_code, | |
1887 | data_t procenv, mach_msg_type_number_t procenvCnt) | |
1888 | ILL_RPC (S_proc_getloginid_reply, | |
1889 | mach_port_t reply_port, kern_return_t return_code, pid_t login_id) | |
1890 | ILL_RPC (S_proc_getloginpids_reply, | |
1891 | mach_port_t reply_port, kern_return_t return_code, | |
1892 | pidarray_t pids, mach_msg_type_number_t pidsCnt) | |
1893 | ILL_RPC (S_proc_getlogin_reply, | |
1894 | mach_port_t reply_port, kern_return_t return_code, string_t logname) | |
1895 | ILL_RPC (S_proc_getsid_reply, | |
1896 | mach_port_t reply_port, kern_return_t return_code, pid_t sid) | |
1897 | ILL_RPC (S_proc_getsessionpgids_reply, | |
1898 | mach_port_t reply_port, kern_return_t return_code, | |
1899 | pidarray_t pgidset, mach_msg_type_number_t pgidsetCnt) | |
1900 | ILL_RPC (S_proc_getsessionpids_reply, | |
1901 | mach_port_t reply_port, kern_return_t return_code, | |
1902 | pidarray_t pidset, mach_msg_type_number_t pidsetCnt) | |
1903 | ILL_RPC (S_proc_getsidport_reply, | |
1904 | mach_port_t reply_port, kern_return_t return_code, | |
1905 | mach_port_t sessport) | |
1906 | ILL_RPC (S_proc_getpgrp_reply, | |
1907 | mach_port_t reply_port, kern_return_t return_code, pid_t pgrp) | |
1908 | ILL_RPC (S_proc_getpgrppids_reply, | |
1909 | mach_port_t reply_port, kern_return_t return_code, | |
1910 | pidarray_t pidset, mach_msg_type_number_t pidsetCnt) | |
1911 | ILL_RPC (S_proc_get_tty_reply, | |
1912 | mach_port_t reply_port, kern_return_t return_code, mach_port_t tty) | |
1913 | ILL_RPC (S_proc_getnports_reply, | |
1914 | mach_port_t reply_port, kern_return_t return_code, | |
1915 | mach_msg_type_number_t nports) | |
1916 | ILL_RPC (S_proc_is_important_reply, | |
1917 | mach_port_t reply_port, kern_return_t return_code, | |
1918 | boolean_t essential) | |
1919 | ILL_RPC (S_proc_get_code_reply, | |
1920 | mach_port_t reply_port, kern_return_t return_code, | |
1921 | vm_address_t start_code, vm_address_t end_code) | |
c906108c SS |
1922 | \f |
1923 | /* Msg_reply server routines. We only use msg_sig_post_untraced_reply. */ | |
1924 | ||
1925 | error_t | |
1926 | S_msg_sig_post_untraced_reply (mach_port_t reply, error_t err) | |
1927 | { | |
1928 | struct inf *inf = waiting_inf; | |
1929 | ||
1930 | if (err == EBUSY) | |
1931 | /* EBUSY is what we get when the crash server has grabbed control of the | |
1932 | process and doesn't like what signal we tried to send it. Just act | |
1933 | like the process stopped (using a signal of 0 should mean that the | |
1934 | *next* time the user continues, it will pass signal 0, which the crash | |
1935 | server should like). */ | |
1936 | { | |
1937 | inf->wait.status.kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 1938 | inf->wait.status.value.sig = GDB_SIGNAL_0; |
c906108c SS |
1939 | } |
1940 | else if (err) | |
8a3fe4f8 | 1941 | warning (_("Signal delivery failed: %s"), safe_strerror (err)); |
c906108c SS |
1942 | |
1943 | if (err) | |
1944 | /* We only get this reply when we've posted a signal to a process which we | |
1945 | thought was stopped, and which we expected to continue after the signal. | |
1946 | Given that the signal has failed for some reason, it's reasonable to | |
1947 | assume it's still stopped. */ | |
1948 | inf->stopped = 1; | |
1949 | else | |
1950 | inf->wait.suppress = 1; | |
1951 | ||
1952 | return 0; | |
1953 | } | |
1954 | ||
3398af6a TS |
1955 | ILL_RPC (S_msg_sig_post_reply, |
1956 | mach_port_t reply, error_t err) | |
c906108c SS |
1957 | \f |
1958 | /* Returns the number of messages queued for the receive right PORT. */ | |
1959 | static mach_port_msgcount_t | |
1960 | port_msgs_queued (mach_port_t port) | |
1961 | { | |
1962 | struct mach_port_status status; | |
1963 | error_t err = | |
d8734c88 | 1964 | mach_port_get_receive_status (mach_task_self (), port, &status); |
c906108c SS |
1965 | |
1966 | if (err) | |
1967 | return 0; | |
1968 | else | |
1969 | return status.mps_msgcount; | |
1970 | } | |
942fd805 | 1971 | |
c906108c SS |
1972 | \f |
1973 | /* Resume execution of the inferior process. | |
1974 | ||
1975 | If STEP is nonzero, single-step it. | |
1976 | If SIGNAL is nonzero, give it that signal. | |
1977 | ||
1978 | TID STEP: | |
1979 | -1 true Single step the current thread allowing other threads to run. | |
1980 | -1 false Continue the current thread allowing other threads to run. | |
1981 | X true Single step the given thread, don't allow any others to run. | |
1982 | X false Continue the given thread, do not allow any others to run. | |
1983 | (Where X, of course, is anything except -1) | |
1984 | ||
1985 | Note that a resume may not `take' if there are pending exceptions/&c | |
1986 | still unprocessed from the last resume we did (any given resume may result | |
0963b4bd MS |
1987 | in multiple events returned by wait). */ |
1988 | ||
c906108c | 1989 | static void |
28439f5e | 1990 | gnu_resume (struct target_ops *ops, |
2ea28649 | 1991 | ptid_t ptid, int step, enum gdb_signal sig) |
c906108c SS |
1992 | { |
1993 | struct proc *step_thread = 0; | |
617fd3b5 | 1994 | int resume_all; |
c289427b | 1995 | struct inf *inf = gnu_current_inf; |
c906108c | 1996 | |
617fd3b5 PA |
1997 | inf_debug (inf, "ptid = %s, step = %d, sig = %d", |
1998 | target_pid_to_str (ptid), step, sig); | |
c906108c | 1999 | |
cce74817 | 2000 | inf_validate_procinfo (inf); |
c5aa993b | 2001 | |
a493e3e2 | 2002 | if (sig != GDB_SIGNAL_0 || inf->stopped) |
cce74817 | 2003 | { |
a493e3e2 | 2004 | if (sig == GDB_SIGNAL_0 && inf->nomsg) |
cce74817 JM |
2005 | inf_continue (inf); |
2006 | else | |
2007 | inf_signal (inf, sig); | |
2008 | } | |
c906108c SS |
2009 | else if (inf->wait.exc.reply != MACH_PORT_NULL) |
2010 | /* We received an exception to which we have chosen not to forward, so | |
2011 | abort the faulting thread, which will perhaps retake it. */ | |
2012 | { | |
2013 | proc_abort (inf->wait.thread, 1); | |
8a3fe4f8 | 2014 | warning (_("Aborting %s with unforwarded exception %s."), |
c906108c | 2015 | proc_string (inf->wait.thread), |
2ea28649 | 2016 | gdb_signal_to_name (inf->wait.status.value.sig)); |
c906108c SS |
2017 | } |
2018 | ||
2019 | if (port_msgs_queued (inf->event_port)) | |
2020 | /* If there are still messages in our event queue, don't bother resuming | |
0963b4bd | 2021 | the process, as we're just going to stop it right away anyway. */ |
c906108c SS |
2022 | return; |
2023 | ||
2024 | inf_update_procs (inf); | |
2025 | ||
617fd3b5 PA |
2026 | /* A specific PTID means `step only this process id'. */ |
2027 | resume_all = ptid_equal (ptid, minus_one_ptid); | |
2028 | ||
2029 | if (resume_all) | |
c906108c SS |
2030 | /* Allow all threads to run, except perhaps single-stepping one. */ |
2031 | { | |
dfd4cc63 LM |
2032 | inf_debug (inf, "running all threads; tid = %d", |
2033 | ptid_get_pid (inferior_ptid)); | |
0963b4bd | 2034 | ptid = inferior_ptid; /* What to step. */ |
c906108c SS |
2035 | inf_set_threads_resume_sc (inf, 0, 1); |
2036 | } | |
2037 | else | |
2038 | /* Just allow a single thread to run. */ | |
2039 | { | |
ca08a94c | 2040 | struct proc *thread = inf_tid_to_thread (inf, ptid_get_lwp (ptid)); |
d8734c88 | 2041 | |
c5aa993b | 2042 | if (!thread) |
617fd3b5 PA |
2043 | error (_("Can't run single thread id %s: no such thread!"), |
2044 | target_pid_to_str (ptid)); | |
2045 | inf_debug (inf, "running one thread: %s", target_pid_to_str (ptid)); | |
c906108c SS |
2046 | inf_set_threads_resume_sc (inf, thread, 0); |
2047 | } | |
2048 | ||
2049 | if (step) | |
2050 | { | |
ca08a94c | 2051 | step_thread = inf_tid_to_thread (inf, ptid_get_lwp (ptid)); |
c5aa993b | 2052 | if (!step_thread) |
617fd3b5 PA |
2053 | warning (_("Can't step thread id %s: no such thread."), |
2054 | target_pid_to_str (ptid)); | |
c906108c | 2055 | else |
617fd3b5 | 2056 | inf_debug (inf, "stepping thread: %s", target_pid_to_str (ptid)); |
c906108c SS |
2057 | } |
2058 | if (step_thread != inf->step_thread) | |
2059 | inf_set_step_thread (inf, step_thread); | |
2060 | ||
2061 | inf_debug (inf, "here we go..."); | |
2062 | inf_resume (inf); | |
2063 | } | |
942fd805 | 2064 | |
c906108c SS |
2065 | \f |
2066 | static void | |
7d85a9c0 | 2067 | gnu_kill_inferior (struct target_ops *ops) |
c906108c | 2068 | { |
c289427b | 2069 | struct proc *task = gnu_current_inf->task; |
d8734c88 | 2070 | |
c906108c SS |
2071 | if (task) |
2072 | { | |
2073 | proc_debug (task, "terminating..."); | |
2074 | task_terminate (task->port); | |
c289427b | 2075 | inf_set_pid (gnu_current_inf, -1); |
c906108c SS |
2076 | } |
2077 | target_mourn_inferior (); | |
2078 | } | |
2079 | ||
2080 | /* Clean up after the inferior dies. */ | |
c906108c | 2081 | static void |
136d6dae | 2082 | gnu_mourn_inferior (struct target_ops *ops) |
c906108c | 2083 | { |
c289427b PA |
2084 | inf_debug (gnu_current_inf, "rip"); |
2085 | inf_detach (gnu_current_inf); | |
c1ee2fb3 | 2086 | inf_child_mourn_inferior (ops); |
c906108c | 2087 | } |
942fd805 | 2088 | |
c906108c SS |
2089 | \f |
2090 | /* Fork an inferior process, and start debugging it. */ | |
2091 | ||
2092 | /* Set INFERIOR_PID to the first thread available in the child, if any. */ | |
2093 | static int | |
fba45db2 | 2094 | inf_pick_first_thread (void) |
c906108c | 2095 | { |
c289427b | 2096 | if (gnu_current_inf->task && gnu_current_inf->threads) |
c906108c | 2097 | /* The first thread. */ |
c289427b | 2098 | return gnu_current_inf->threads->tid; |
c906108c SS |
2099 | else |
2100 | /* What may be the next thread. */ | |
2101 | return next_thread_id; | |
2102 | } | |
2103 | ||
2104 | static struct inf * | |
fba45db2 | 2105 | cur_inf (void) |
c906108c | 2106 | { |
c289427b PA |
2107 | if (!gnu_current_inf) |
2108 | gnu_current_inf = make_inf (); | |
2109 | return gnu_current_inf; | |
c906108c SS |
2110 | } |
2111 | ||
2112 | static void | |
136d6dae VP |
2113 | gnu_create_inferior (struct target_ops *ops, |
2114 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 2115 | int from_tty) |
c906108c SS |
2116 | { |
2117 | struct inf *inf = cur_inf (); | |
b4d1e8c7 | 2118 | int pid; |
c906108c | 2119 | |
eec03155 | 2120 | void trace_me (void) |
c5aa993b JM |
2121 | { |
2122 | /* We're in the child; make this process stop as soon as it execs. */ | |
2123 | inf_debug (inf, "tracing self"); | |
2124 | if (ptrace (PTRACE_TRACEME) != 0) | |
8a3fe4f8 | 2125 | error (_("ptrace (PTRACE_TRACEME) failed!")); |
c5aa993b | 2126 | } |
c906108c | 2127 | |
b4d1e8c7 | 2128 | inf_debug (inf, "creating inferior"); |
c906108c | 2129 | |
e69860f1 TG |
2130 | pid = fork_inferior (exec_file, allargs, env, trace_me, |
2131 | NULL, NULL, NULL, NULL); | |
c906108c | 2132 | |
b4d1e8c7 PA |
2133 | /* Attach to the now stopped child, which is actually a shell... */ |
2134 | inf_debug (inf, "attaching to child: %d", pid); | |
c906108c | 2135 | |
b4d1e8c7 | 2136 | inf_attach (inf, pid); |
617fd3b5 | 2137 | |
b4d1e8c7 | 2138 | push_target (ops); |
c906108c | 2139 | |
c82f56d9 | 2140 | inf->pending_execs = 1; |
b4d1e8c7 PA |
2141 | inf->nomsg = 1; |
2142 | inf->traced = 1; | |
c906108c | 2143 | |
b4d1e8c7 | 2144 | /* Now let the child run again, knowing that it will stop |
0963b4bd | 2145 | immediately because of the ptrace. */ |
b4d1e8c7 PA |
2146 | inf_resume (inf); |
2147 | ||
2148 | /* We now have thread info. */ | |
2149 | thread_change_ptid (inferior_ptid, | |
ca08a94c | 2150 | ptid_build (inf->pid, inf_pick_first_thread (), 0)); |
c906108c | 2151 | |
c82f56d9 TS |
2152 | startup_inferior (START_INFERIOR_TRAPS_EXPECTED); |
2153 | inf->pending_execs = 0; | |
c906108c | 2154 | |
cce74817 | 2155 | inf_validate_procinfo (inf); |
c906108c SS |
2156 | inf_update_signal_thread (inf); |
2157 | inf_set_traced (inf, inf->want_signals); | |
2158 | ||
2159 | /* Execing the process will have trashed our exception ports; steal them | |
2160 | back (or make sure they're restored if the user wants that). */ | |
2161 | if (inf->want_exceptions) | |
2162 | inf_steal_exc_ports (inf); | |
2163 | else | |
2164 | inf_restore_exc_ports (inf); | |
c906108c SS |
2165 | } |
2166 | ||
c906108c | 2167 | \f |
c906108c SS |
2168 | /* Attach to process PID, then initialize for debugging it |
2169 | and wait for the trace-trap that results from attaching. */ | |
2170 | static void | |
c0939df1 | 2171 | gnu_attach (struct target_ops *ops, const char *args, int from_tty) |
c906108c SS |
2172 | { |
2173 | int pid; | |
2174 | char *exec_file; | |
2175 | struct inf *inf = cur_inf (); | |
181e7f93 | 2176 | struct inferior *inferior; |
c906108c | 2177 | |
74164c56 | 2178 | pid = parse_pid_to_attach (args); |
c906108c | 2179 | |
74164c56 | 2180 | if (pid == getpid ()) /* Trying to masturbate? */ |
8a3fe4f8 | 2181 | error (_("I refuse to debug myself!")); |
c906108c SS |
2182 | |
2183 | if (from_tty) | |
2184 | { | |
2185 | exec_file = (char *) get_exec_file (0); | |
2186 | ||
2187 | if (exec_file) | |
2188 | printf_unfiltered ("Attaching to program `%s', pid %d\n", | |
2189 | exec_file, pid); | |
2190 | else | |
2191 | printf_unfiltered ("Attaching to pid %d\n", pid); | |
2192 | ||
2193 | gdb_flush (gdb_stdout); | |
2194 | } | |
2195 | ||
2196 | inf_debug (inf, "attaching to pid: %d", pid); | |
2197 | ||
2198 | inf_attach (inf, pid); | |
a9ab7422 | 2199 | |
b4d1e8c7 | 2200 | push_target (ops); |
a9ab7422 | 2201 | |
6c95b8df PA |
2202 | inferior = current_inferior (); |
2203 | inferior_appeared (inferior, pid); | |
181e7f93 | 2204 | inferior->attach_flag = 1; |
7f9f62ba | 2205 | |
c906108c SS |
2206 | inf_update_procs (inf); |
2207 | ||
ca08a94c | 2208 | inferior_ptid = ptid_build (pid, inf_pick_first_thread (), 0); |
c906108c | 2209 | |
b83266a0 SS |
2210 | /* We have to initialize the terminal settings now, since the code |
2211 | below might try to restore them. */ | |
2212 | target_terminal_init (); | |
c5aa993b | 2213 | |
c906108c SS |
2214 | /* If the process was stopped before we attached, make it continue the next |
2215 | time the user does a continue. */ | |
cce74817 JM |
2216 | inf_validate_procinfo (inf); |
2217 | ||
2218 | inf_update_signal_thread (inf); | |
2219 | inf_set_traced (inf, inf->want_signals); | |
c906108c | 2220 | |
0963b4bd MS |
2221 | #if 0 /* Do we need this? */ |
2222 | renumber_threads (0); /* Give our threads reasonable names. */ | |
c906108c SS |
2223 | #endif |
2224 | } | |
942fd805 | 2225 | |
c906108c SS |
2226 | \f |
2227 | /* Take a program previously attached to and detaches it. | |
2228 | The program resumes execution and will no longer stop | |
2229 | on signals, etc. We'd better not have left any breakpoints | |
2230 | in the program or it'll die when it hits one. For this | |
2231 | to work, it may be necessary for the process to have been | |
2232 | previously attached. It *might* work if the program was | |
2233 | started via fork. */ | |
2234 | static void | |
52554a0e | 2235 | gnu_detach (struct target_ops *ops, const char *args, int from_tty) |
c906108c | 2236 | { |
7f9f62ba PA |
2237 | int pid; |
2238 | ||
c906108c SS |
2239 | if (from_tty) |
2240 | { | |
2241 | char *exec_file = get_exec_file (0); | |
d8734c88 | 2242 | |
c906108c SS |
2243 | if (exec_file) |
2244 | printf_unfiltered ("Detaching from program `%s' pid %d\n", | |
c289427b | 2245 | exec_file, gnu_current_inf->pid); |
c906108c | 2246 | else |
c289427b | 2247 | printf_unfiltered ("Detaching from pid %d\n", gnu_current_inf->pid); |
c906108c SS |
2248 | gdb_flush (gdb_stdout); |
2249 | } | |
c5aa993b | 2250 | |
c289427b | 2251 | pid = gnu_current_inf->pid; |
7f9f62ba | 2252 | |
c289427b | 2253 | inf_detach (gnu_current_inf); |
c906108c | 2254 | |
39f77062 | 2255 | inferior_ptid = null_ptid; |
7f9f62ba | 2256 | detach_inferior (pid); |
c906108c | 2257 | |
6a3cb8e8 | 2258 | inf_child_maybe_unpush_target (ops); |
c906108c | 2259 | } |
942fd805 | 2260 | \f |
c906108c | 2261 | static void |
d6b64346 | 2262 | gnu_terminal_init (struct target_ops *self) |
c906108c | 2263 | { |
c289427b | 2264 | gdb_assert (gnu_current_inf); |
d6b64346 | 2265 | child_terminal_init_with_pgrp (gnu_current_inf->pid); |
c906108c SS |
2266 | } |
2267 | ||
c906108c | 2268 | static void |
1eab8a48 | 2269 | gnu_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 2270 | { |
8a3fe4f8 | 2271 | error (_("to_stop target function not implemented")); |
c906108c SS |
2272 | } |
2273 | ||
c906108c | 2274 | static int |
28439f5e | 2275 | gnu_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 2276 | { |
c289427b PA |
2277 | inf_update_procs (gnu_current_inf); |
2278 | return !!inf_tid_to_thread (gnu_current_inf, | |
ca08a94c | 2279 | ptid_get_lwp (ptid)); |
c906108c | 2280 | } |
942fd805 | 2281 | |
c906108c | 2282 | \f |
942fd805 MK |
2283 | /* Read inferior task's LEN bytes from ADDR and copy it to MYADDR in |
2284 | gdb's address space. Return 0 on failure; number of bytes read | |
2285 | otherwise. */ | |
9b3f3ee6 TS |
2286 | static int |
2287 | gnu_read_inferior (task_t task, CORE_ADDR addr, gdb_byte *myaddr, int length) | |
c906108c SS |
2288 | { |
2289 | error_t err; | |
2290 | vm_address_t low_address = (vm_address_t) trunc_page (addr); | |
2291 | vm_size_t aligned_length = | |
c5aa993b JM |
2292 | (vm_size_t) round_page (addr + length) - low_address; |
2293 | pointer_t copied; | |
25c0bd04 | 2294 | mach_msg_type_number_t copy_count; |
c906108c | 2295 | |
0963b4bd | 2296 | /* Get memory from inferior with page aligned addresses. */ |
c906108c SS |
2297 | err = vm_read (task, low_address, aligned_length, &copied, ©_count); |
2298 | if (err) | |
2299 | return 0; | |
2300 | ||
0963b4bd MS |
2301 | err = hurd_safe_copyin (myaddr, (void *) (addr - low_address + copied), |
2302 | length); | |
c906108c SS |
2303 | if (err) |
2304 | { | |
8a3fe4f8 | 2305 | warning (_("Read from inferior faulted: %s"), safe_strerror (err)); |
c906108c SS |
2306 | length = 0; |
2307 | } | |
2308 | ||
2309 | err = vm_deallocate (mach_task_self (), copied, copy_count); | |
2310 | if (err) | |
0963b4bd MS |
2311 | warning (_("gnu_read_inferior vm_deallocate failed: %s"), |
2312 | safe_strerror (err)); | |
c906108c SS |
2313 | |
2314 | return length; | |
2315 | } | |
2316 | ||
2317 | #define CHK_GOTO_OUT(str,ret) \ | |
2318 | do if (ret != KERN_SUCCESS) { errstr = #str; goto out; } while(0) | |
2319 | ||
c5aa993b JM |
2320 | struct vm_region_list |
2321 | { | |
c906108c | 2322 | struct vm_region_list *next; |
c5aa993b JM |
2323 | vm_prot_t protection; |
2324 | vm_address_t start; | |
2325 | vm_size_t length; | |
c906108c SS |
2326 | }; |
2327 | ||
c5aa993b | 2328 | struct obstack region_obstack; |
c906108c | 2329 | |
942fd805 MK |
2330 | /* Write gdb's LEN bytes from MYADDR and copy it to ADDR in inferior |
2331 | task's address space. */ | |
9b3f3ee6 TS |
2332 | static int |
2333 | gnu_write_inferior (task_t task, CORE_ADDR addr, | |
2334 | const gdb_byte *myaddr, int length) | |
c906108c SS |
2335 | { |
2336 | error_t err = 0; | |
c5aa993b JM |
2337 | vm_address_t low_address = (vm_address_t) trunc_page (addr); |
2338 | vm_size_t aligned_length = | |
2339 | (vm_size_t) round_page (addr + length) - low_address; | |
2340 | pointer_t copied; | |
25c0bd04 | 2341 | mach_msg_type_number_t copy_count; |
c5aa993b | 2342 | int deallocate = 0; |
c906108c | 2343 | |
c5aa993b | 2344 | char *errstr = "Bug in gnu_write_inferior"; |
c906108c SS |
2345 | |
2346 | struct vm_region_list *region_element; | |
be903358 | 2347 | struct vm_region_list *region_head = NULL; |
c906108c | 2348 | |
0963b4bd | 2349 | /* Get memory from inferior with page aligned addresses. */ |
c906108c SS |
2350 | err = vm_read (task, |
2351 | low_address, | |
2352 | aligned_length, | |
2353 | &copied, | |
2354 | ©_count); | |
2355 | CHK_GOTO_OUT ("gnu_write_inferior vm_read failed", err); | |
2356 | ||
2357 | deallocate++; | |
2358 | ||
96ffcb62 | 2359 | err = hurd_safe_copyout ((void *) (addr - low_address + copied), |
942fd805 | 2360 | myaddr, length); |
c906108c SS |
2361 | CHK_GOTO_OUT ("Write to inferior faulted", err); |
2362 | ||
2363 | obstack_init (®ion_obstack); | |
2364 | ||
2365 | /* Do writes atomically. | |
942fd805 | 2366 | First check for holes and unwritable memory. */ |
c906108c | 2367 | { |
c5aa993b JM |
2368 | vm_size_t remaining_length = aligned_length; |
2369 | vm_address_t region_address = low_address; | |
c906108c SS |
2370 | |
2371 | struct vm_region_list *scan; | |
2372 | ||
c5aa993b | 2373 | while (region_address < low_address + aligned_length) |
c906108c SS |
2374 | { |
2375 | vm_prot_t protection; | |
2376 | vm_prot_t max_protection; | |
2377 | vm_inherit_t inheritance; | |
2378 | boolean_t shared; | |
2379 | mach_port_t object_name; | |
2380 | vm_offset_t offset; | |
c5aa993b JM |
2381 | vm_size_t region_length = remaining_length; |
2382 | vm_address_t old_address = region_address; | |
2383 | ||
c906108c SS |
2384 | err = vm_region (task, |
2385 | ®ion_address, | |
2386 | ®ion_length, | |
2387 | &protection, | |
2388 | &max_protection, | |
2389 | &inheritance, | |
2390 | &shared, | |
2391 | &object_name, | |
2392 | &offset); | |
2393 | CHK_GOTO_OUT ("vm_region failed", err); | |
2394 | ||
0963b4bd | 2395 | /* Check for holes in memory. */ |
c906108c SS |
2396 | if (old_address != region_address) |
2397 | { | |
a9a758e3 | 2398 | warning (_("No memory at 0x%lx. Nothing written"), |
c906108c SS |
2399 | old_address); |
2400 | err = KERN_SUCCESS; | |
2401 | length = 0; | |
2402 | goto out; | |
2403 | } | |
2404 | ||
2405 | if (!(max_protection & VM_PROT_WRITE)) | |
2406 | { | |
a9a758e3 | 2407 | warning (_("Memory at address 0x%lx is unwritable. " |
0963b4bd | 2408 | "Nothing written"), |
c906108c SS |
2409 | old_address); |
2410 | err = KERN_SUCCESS; | |
2411 | length = 0; | |
2412 | goto out; | |
2413 | } | |
2414 | ||
0963b4bd | 2415 | /* Chain the regions for later use. */ |
8d749320 | 2416 | region_element = XOBNEW (®ion_obstack, struct vm_region_list); |
c5aa993b | 2417 | |
c906108c | 2418 | region_element->protection = protection; |
c5aa993b JM |
2419 | region_element->start = region_address; |
2420 | region_element->length = region_length; | |
c906108c | 2421 | |
0963b4bd | 2422 | /* Chain the regions along with protections. */ |
c906108c | 2423 | region_element->next = region_head; |
c5aa993b JM |
2424 | region_head = region_element; |
2425 | ||
c906108c SS |
2426 | region_address += region_length; |
2427 | remaining_length = remaining_length - region_length; | |
2428 | } | |
2429 | ||
2430 | /* If things fail after this, we give up. | |
942fd805 | 2431 | Somebody is messing up inferior_task's mappings. */ |
c5aa993b | 2432 | |
0963b4bd | 2433 | /* Enable writes to the chained vm regions. */ |
c906108c SS |
2434 | for (scan = region_head; scan; scan = scan->next) |
2435 | { | |
c906108c SS |
2436 | if (!(scan->protection & VM_PROT_WRITE)) |
2437 | { | |
2438 | err = vm_protect (task, | |
2439 | scan->start, | |
2440 | scan->length, | |
2441 | FALSE, | |
2442 | scan->protection | VM_PROT_WRITE); | |
2443 | CHK_GOTO_OUT ("vm_protect: enable write failed", err); | |
2444 | } | |
2445 | } | |
2446 | ||
2447 | err = vm_write (task, | |
2448 | low_address, | |
2449 | copied, | |
2450 | aligned_length); | |
2451 | CHK_GOTO_OUT ("vm_write failed", err); | |
c5aa993b | 2452 | |
0963b4bd | 2453 | /* Set up the original region protections, if they were changed. */ |
c906108c SS |
2454 | for (scan = region_head; scan; scan = scan->next) |
2455 | { | |
c906108c SS |
2456 | if (!(scan->protection & VM_PROT_WRITE)) |
2457 | { | |
2458 | err = vm_protect (task, | |
2459 | scan->start, | |
2460 | scan->length, | |
2461 | FALSE, | |
2462 | scan->protection); | |
2463 | CHK_GOTO_OUT ("vm_protect: enable write failed", err); | |
2464 | } | |
2465 | } | |
2466 | } | |
2467 | ||
c5aa993b | 2468 | out: |
c906108c SS |
2469 | if (deallocate) |
2470 | { | |
2471 | obstack_free (®ion_obstack, 0); | |
c5aa993b | 2472 | |
c906108c SS |
2473 | (void) vm_deallocate (mach_task_self (), |
2474 | copied, | |
2475 | copy_count); | |
2476 | } | |
2477 | ||
2478 | if (err != KERN_SUCCESS) | |
2479 | { | |
8a3fe4f8 | 2480 | warning (_("%s: %s"), errstr, mach_error_string (err)); |
c906108c SS |
2481 | return 0; |
2482 | } | |
2483 | ||
2484 | return length; | |
2485 | } | |
942fd805 | 2486 | |
c906108c | 2487 | \f |
9b3f3ee6 | 2488 | |
edcc890f YQ |
2489 | /* Implement the to_xfer_partial target_ops method for |
2490 | TARGET_OBJECT_MEMORY. */ | |
9b3f3ee6 | 2491 | |
9b409511 | 2492 | static enum target_xfer_status |
9b3f3ee6 | 2493 | gnu_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 | 2494 | CORE_ADDR memaddr, ULONGEST len, ULONGEST *xfered_len) |
c906108c | 2495 | { |
c289427b PA |
2496 | task_t task = (gnu_current_inf |
2497 | ? (gnu_current_inf->task | |
2498 | ? gnu_current_inf->task->port : 0) | |
942fd805 | 2499 | : 0); |
9b3f3ee6 | 2500 | int res; |
c906108c SS |
2501 | |
2502 | if (task == MACH_PORT_NULL) | |
9b3f3ee6 TS |
2503 | return TARGET_XFER_E_IO; |
2504 | ||
2505 | if (writebuf != NULL) | |
2506 | { | |
2507 | inf_debug (gnu_current_inf, "writing %s[%s] <-- %s", | |
b55e14c7 | 2508 | paddress (target_gdbarch (), memaddr), pulongest (len), |
9b3f3ee6 TS |
2509 | host_address_to_string (writebuf)); |
2510 | res = gnu_write_inferior (task, memaddr, writebuf, len); | |
2511 | } | |
c906108c SS |
2512 | else |
2513 | { | |
9b3f3ee6 | 2514 | inf_debug (gnu_current_inf, "reading %s[%s] --> %s", |
b55e14c7 | 2515 | paddress (target_gdbarch (), memaddr), pulongest (len), |
9b3f3ee6 TS |
2516 | host_address_to_string (readbuf)); |
2517 | res = gnu_read_inferior (task, memaddr, readbuf, len); | |
2518 | } | |
9b409511 | 2519 | gdb_assert (res >= 0); |
9b3f3ee6 TS |
2520 | if (res == 0) |
2521 | return TARGET_XFER_E_IO; | |
9b409511 YQ |
2522 | else |
2523 | { | |
2524 | *xfered_len = (ULONGEST) res; | |
2525 | return TARGET_XFER_OK; | |
2526 | } | |
9b3f3ee6 TS |
2527 | } |
2528 | ||
2529 | /* Target to_xfer_partial implementation. */ | |
2530 | ||
9b409511 | 2531 | static enum target_xfer_status |
9b3f3ee6 TS |
2532 | gnu_xfer_partial (struct target_ops *ops, enum target_object object, |
2533 | const char *annex, gdb_byte *readbuf, | |
9b409511 YQ |
2534 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
2535 | ULONGEST *xfered_len) | |
9b3f3ee6 TS |
2536 | { |
2537 | switch (object) | |
2538 | { | |
2539 | case TARGET_OBJECT_MEMORY: | |
9b409511 | 2540 | return gnu_xfer_memory (readbuf, writebuf, offset, len, xfered_len); |
9b3f3ee6 | 2541 | default: |
2ed4b548 | 2542 | return TARGET_XFER_E_IO; |
c906108c SS |
2543 | } |
2544 | } | |
942fd805 | 2545 | |
57e76fac MS |
2546 | /* Call FUNC on each memory region in the task. */ |
2547 | static int | |
2e73927c TT |
2548 | gnu_find_memory_regions (struct target_ops *self, |
2549 | find_memory_region_ftype func, void *data) | |
57e76fac MS |
2550 | { |
2551 | error_t err; | |
2552 | task_t task; | |
2553 | vm_address_t region_address, last_region_address, last_region_end; | |
2554 | vm_prot_t last_protection; | |
2555 | ||
c289427b | 2556 | if (gnu_current_inf == 0 || gnu_current_inf->task == 0) |
57e76fac | 2557 | return 0; |
c289427b | 2558 | task = gnu_current_inf->task->port; |
57e76fac MS |
2559 | if (task == MACH_PORT_NULL) |
2560 | return 0; | |
2561 | ||
2562 | region_address = last_region_address = last_region_end = VM_MIN_ADDRESS; | |
2563 | last_protection = VM_PROT_NONE; | |
2564 | while (region_address < VM_MAX_ADDRESS) | |
2565 | { | |
2566 | vm_prot_t protection; | |
2567 | vm_prot_t max_protection; | |
2568 | vm_inherit_t inheritance; | |
2569 | boolean_t shared; | |
2570 | mach_port_t object_name; | |
2571 | vm_offset_t offset; | |
2572 | vm_size_t region_length = VM_MAX_ADDRESS - region_address; | |
2573 | vm_address_t old_address = region_address; | |
2574 | ||
2575 | err = vm_region (task, | |
2576 | ®ion_address, | |
2577 | ®ion_length, | |
2578 | &protection, | |
2579 | &max_protection, | |
2580 | &inheritance, | |
2581 | &shared, | |
2582 | &object_name, | |
2583 | &offset); | |
2584 | if (err == KERN_NO_SPACE) | |
2585 | break; | |
2586 | if (err != KERN_SUCCESS) | |
2587 | { | |
8a3fe4f8 | 2588 | warning (_("vm_region failed: %s"), mach_error_string (err)); |
57e76fac MS |
2589 | return -1; |
2590 | } | |
2591 | ||
2592 | if (protection == last_protection && region_address == last_region_end) | |
2593 | /* This region is contiguous with and indistinguishable from | |
2594 | the previous one, so we just extend that one. */ | |
2595 | last_region_end = region_address += region_length; | |
2596 | else | |
2597 | { | |
2598 | /* This region is distinct from the last one we saw, so report | |
2599 | that previous one. */ | |
2600 | if (last_protection != VM_PROT_NONE) | |
2601 | (*func) (last_region_address, | |
2602 | last_region_end - last_region_address, | |
2603 | last_protection & VM_PROT_READ, | |
2604 | last_protection & VM_PROT_WRITE, | |
2605 | last_protection & VM_PROT_EXECUTE, | |
4f69f4c2 | 2606 | 1, /* MODIFIED is unknown, pass it as true. */ |
57e76fac MS |
2607 | data); |
2608 | last_region_address = region_address; | |
2609 | last_region_end = region_address += region_length; | |
2610 | last_protection = protection; | |
2611 | } | |
2612 | } | |
47f21bcc | 2613 | |
1a113c93 MS |
2614 | /* Report the final region. */ |
2615 | if (last_region_end > last_region_address && last_protection != VM_PROT_NONE) | |
2616 | (*func) (last_region_address, last_region_end - last_region_address, | |
2617 | last_protection & VM_PROT_READ, | |
2618 | last_protection & VM_PROT_WRITE, | |
2619 | last_protection & VM_PROT_EXECUTE, | |
4f69f4c2 | 2620 | 1, /* MODIFIED is unknown, pass it as true. */ |
1a113c93 | 2621 | data); |
47f21bcc MS |
2622 | |
2623 | return 0; | |
57e76fac MS |
2624 | } |
2625 | ||
c906108c | 2626 | \f |
ed9a39eb | 2627 | /* Return printable description of proc. */ |
f90b2b1d | 2628 | char * |
ed9a39eb JM |
2629 | proc_string (struct proc *proc) |
2630 | { | |
2631 | static char tid_str[80]; | |
d8734c88 | 2632 | |
ed9a39eb | 2633 | if (proc_is_task (proc)) |
8c042590 | 2634 | xsnprintf (tid_str, sizeof (tid_str), "process %d", proc->inf->pid); |
ed9a39eb | 2635 | else |
8c042590 PM |
2636 | xsnprintf (tid_str, sizeof (tid_str), "Thread %d.%d", |
2637 | proc->inf->pid, proc->tid); | |
ed9a39eb JM |
2638 | return tid_str; |
2639 | } | |
2640 | ||
2641 | static char * | |
117de6a9 | 2642 | gnu_pid_to_str (struct target_ops *ops, ptid_t ptid) |
ed9a39eb | 2643 | { |
c289427b | 2644 | struct inf *inf = gnu_current_inf; |
ca08a94c | 2645 | int tid = ptid_get_lwp (ptid); |
ed9a39eb JM |
2646 | struct proc *thread = inf_tid_to_thread (inf, tid); |
2647 | ||
2648 | if (thread) | |
2649 | return proc_string (thread); | |
2650 | else | |
2651 | { | |
2652 | static char tid_str[80]; | |
d8734c88 | 2653 | |
8c042590 | 2654 | xsnprintf (tid_str, sizeof (tid_str), "bogus thread id %d", tid); |
ed9a39eb JM |
2655 | return tid_str; |
2656 | } | |
2657 | } | |
942fd805 | 2658 | |
ed9a39eb | 2659 | \f |
b4d1e8c7 PA |
2660 | /* Create a prototype generic GNU/Hurd target. The client can |
2661 | override it with local methods. */ | |
2662 | ||
2663 | struct target_ops * | |
2664 | gnu_target (void) | |
2665 | { | |
2666 | struct target_ops *t = inf_child_target (); | |
c906108c | 2667 | |
b4d1e8c7 PA |
2668 | t->to_attach = gnu_attach; |
2669 | t->to_attach_no_wait = 1; | |
2670 | t->to_detach = gnu_detach; | |
2671 | t->to_resume = gnu_resume; | |
2672 | t->to_wait = gnu_wait; | |
9b3f3ee6 | 2673 | t->to_xfer_partial = gnu_xfer_partial; |
b4d1e8c7 | 2674 | t->to_find_memory_regions = gnu_find_memory_regions; |
d6b64346 | 2675 | t->to_terminal_init = gnu_terminal_init; |
b4d1e8c7 PA |
2676 | t->to_kill = gnu_kill_inferior; |
2677 | t->to_create_inferior = gnu_create_inferior; | |
2678 | t->to_mourn_inferior = gnu_mourn_inferior; | |
2679 | t->to_thread_alive = gnu_thread_alive; | |
2680 | t->to_pid_to_str = gnu_pid_to_str; | |
2681 | t->to_stop = gnu_stop; | |
2682 | ||
2683 | return t; | |
2684 | } | |
942fd805 | 2685 | |
c906108c | 2686 | \f |
c906108c SS |
2687 | /* User task commands. */ |
2688 | ||
28578e6b YQ |
2689 | static struct cmd_list_element *set_task_cmd_list = 0; |
2690 | static struct cmd_list_element *show_task_cmd_list = 0; | |
c906108c SS |
2691 | /* User thread commands. */ |
2692 | ||
2693 | /* Commands with a prefix of `set/show thread'. */ | |
2694 | extern struct cmd_list_element *thread_cmd_list; | |
2695 | struct cmd_list_element *set_thread_cmd_list = NULL; | |
2696 | struct cmd_list_element *show_thread_cmd_list = NULL; | |
2697 | ||
2698 | /* Commands with a prefix of `set/show thread default'. */ | |
2699 | struct cmd_list_element *set_thread_default_cmd_list = NULL; | |
2700 | struct cmd_list_element *show_thread_default_cmd_list = NULL; | |
2701 | ||
2702 | static void | |
2703 | set_thread_cmd (char *args, int from_tty) | |
2704 | { | |
0963b4bd MS |
2705 | printf_unfiltered ("\"set thread\" must be followed by the " |
2706 | "name of a thread property, or \"default\".\n"); | |
c906108c SS |
2707 | } |
2708 | ||
2709 | static void | |
2710 | show_thread_cmd (char *args, int from_tty) | |
2711 | { | |
0963b4bd MS |
2712 | printf_unfiltered ("\"show thread\" must be followed by the " |
2713 | "name of a thread property, or \"default\".\n"); | |
c906108c SS |
2714 | } |
2715 | ||
2716 | static void | |
2717 | set_thread_default_cmd (char *args, int from_tty) | |
2718 | { | |
0963b4bd MS |
2719 | printf_unfiltered ("\"set thread default\" must be followed " |
2720 | "by the name of a thread property.\n"); | |
c906108c SS |
2721 | } |
2722 | ||
2723 | static void | |
2724 | show_thread_default_cmd (char *args, int from_tty) | |
2725 | { | |
0963b4bd MS |
2726 | printf_unfiltered ("\"show thread default\" must be followed " |
2727 | "by the name of a thread property.\n"); | |
c906108c SS |
2728 | } |
2729 | ||
2730 | static int | |
2731 | parse_int_arg (char *args, char *cmd_prefix) | |
2732 | { | |
2733 | if (args) | |
2734 | { | |
2735 | char *arg_end; | |
2736 | int val = strtoul (args, &arg_end, 10); | |
d8734c88 | 2737 | |
c906108c SS |
2738 | if (*args && *arg_end == '\0') |
2739 | return val; | |
2740 | } | |
0963b4bd MS |
2741 | error (_("Illegal argument for \"%s\" command, should be an integer."), |
2742 | cmd_prefix); | |
c906108c SS |
2743 | } |
2744 | ||
2745 | static int | |
2746 | _parse_bool_arg (char *args, char *t_val, char *f_val, char *cmd_prefix) | |
2747 | { | |
2748 | if (!args || strcmp (args, t_val) == 0) | |
2749 | return 1; | |
2750 | else if (strcmp (args, f_val) == 0) | |
2751 | return 0; | |
2752 | else | |
0963b4bd MS |
2753 | error (_("Illegal argument for \"%s\" command, " |
2754 | "should be \"%s\" or \"%s\"."), | |
c906108c SS |
2755 | cmd_prefix, t_val, f_val); |
2756 | } | |
2757 | ||
2758 | #define parse_bool_arg(args, cmd_prefix) \ | |
2759 | _parse_bool_arg (args, "on", "off", cmd_prefix) | |
2760 | ||
2761 | static void | |
2762 | check_empty (char *args, char *cmd_prefix) | |
2763 | { | |
2764 | if (args) | |
8a3fe4f8 | 2765 | error (_("Garbage after \"%s\" command: `%s'"), cmd_prefix, args); |
c906108c SS |
2766 | } |
2767 | ||
2768 | /* Returns the alive thread named by INFERIOR_PID, or signals an error. */ | |
2769 | static struct proc * | |
fba45db2 | 2770 | cur_thread (void) |
c906108c SS |
2771 | { |
2772 | struct inf *inf = cur_inf (); | |
617fd3b5 | 2773 | struct proc *thread = inf_tid_to_thread (inf, |
ca08a94c | 2774 | ptid_get_lwp (inferior_ptid)); |
c906108c | 2775 | if (!thread) |
8a3fe4f8 | 2776 | error (_("No current thread.")); |
c906108c SS |
2777 | return thread; |
2778 | } | |
2779 | ||
2780 | /* Returns the current inferior, but signals an error if it has no task. */ | |
2781 | static struct inf * | |
fba45db2 | 2782 | active_inf (void) |
c906108c SS |
2783 | { |
2784 | struct inf *inf = cur_inf (); | |
d8734c88 | 2785 | |
c5aa993b | 2786 | if (!inf->task) |
8a3fe4f8 | 2787 | error (_("No current process.")); |
c906108c SS |
2788 | return inf; |
2789 | } | |
942fd805 | 2790 | |
c906108c SS |
2791 | \f |
2792 | static void | |
2793 | set_task_pause_cmd (char *args, int from_tty) | |
2794 | { | |
2795 | struct inf *inf = cur_inf (); | |
2796 | int old_sc = inf->pause_sc; | |
2797 | ||
2798 | inf->pause_sc = parse_bool_arg (args, "set task pause"); | |
2799 | ||
2800 | if (old_sc == 0 && inf->pause_sc != 0) | |
2801 | /* If the task is currently unsuspended, immediately suspend it, | |
2802 | otherwise wait until the next time it gets control. */ | |
2803 | inf_suspend (inf); | |
2804 | } | |
2805 | ||
2806 | static void | |
2807 | show_task_pause_cmd (char *args, int from_tty) | |
2808 | { | |
2809 | struct inf *inf = cur_inf (); | |
d8734c88 | 2810 | |
c906108c SS |
2811 | check_empty (args, "show task pause"); |
2812 | printf_unfiltered ("The inferior task %s suspended while gdb has control.\n", | |
2813 | inf->task | |
2814 | ? (inf->pause_sc == 0 ? "isn't" : "is") | |
2815 | : (inf->pause_sc == 0 ? "won't be" : "will be")); | |
2816 | } | |
2817 | ||
2818 | static void | |
2819 | set_task_detach_sc_cmd (char *args, int from_tty) | |
2820 | { | |
0963b4bd MS |
2821 | cur_inf ()->detach_sc = parse_int_arg (args, |
2822 | "set task detach-suspend-count"); | |
c906108c SS |
2823 | } |
2824 | ||
2825 | static void | |
2826 | show_task_detach_sc_cmd (char *args, int from_tty) | |
2827 | { | |
2828 | check_empty (args, "show task detach-suspend-count"); | |
0963b4bd MS |
2829 | printf_unfiltered ("The inferior task will be left with a " |
2830 | "suspend count of %d when detaching.\n", | |
c906108c SS |
2831 | cur_inf ()->detach_sc); |
2832 | } | |
942fd805 | 2833 | |
c906108c SS |
2834 | \f |
2835 | static void | |
2836 | set_thread_default_pause_cmd (char *args, int from_tty) | |
2837 | { | |
2838 | struct inf *inf = cur_inf (); | |
d8734c88 | 2839 | |
c906108c SS |
2840 | inf->default_thread_pause_sc = |
2841 | parse_bool_arg (args, "set thread default pause") ? 0 : 1; | |
2842 | } | |
2843 | ||
2844 | static void | |
2845 | show_thread_default_pause_cmd (char *args, int from_tty) | |
2846 | { | |
2847 | struct inf *inf = cur_inf (); | |
2848 | int sc = inf->default_thread_pause_sc; | |
d8734c88 | 2849 | |
c906108c SS |
2850 | check_empty (args, "show thread default pause"); |
2851 | printf_unfiltered ("New threads %s suspended while gdb has control%s.\n", | |
2852 | sc ? "are" : "aren't", | |
2853 | !sc && inf->pause_sc ? " (but the task is)" : ""); | |
2854 | } | |
2855 | ||
2856 | static void | |
2857 | set_thread_default_run_cmd (char *args, int from_tty) | |
2858 | { | |
2859 | struct inf *inf = cur_inf (); | |
d8734c88 | 2860 | |
c906108c SS |
2861 | inf->default_thread_run_sc = |
2862 | parse_bool_arg (args, "set thread default run") ? 0 : 1; | |
2863 | } | |
2864 | ||
2865 | static void | |
2866 | show_thread_default_run_cmd (char *args, int from_tty) | |
2867 | { | |
2868 | struct inf *inf = cur_inf (); | |
d8734c88 | 2869 | |
c906108c SS |
2870 | check_empty (args, "show thread default run"); |
2871 | printf_unfiltered ("New threads %s allowed to run.\n", | |
2872 | inf->default_thread_run_sc == 0 ? "are" : "aren't"); | |
2873 | } | |
2874 | ||
2875 | static void | |
2876 | set_thread_default_detach_sc_cmd (char *args, int from_tty) | |
2877 | { | |
2878 | cur_inf ()->default_thread_detach_sc = | |
2879 | parse_int_arg (args, "set thread default detach-suspend-count"); | |
2880 | } | |
2881 | ||
2882 | static void | |
2883 | show_thread_default_detach_sc_cmd (char *args, int from_tty) | |
2884 | { | |
2885 | check_empty (args, "show thread default detach-suspend-count"); | |
2886 | printf_unfiltered ("New threads will get a detach-suspend-count of %d.\n", | |
2887 | cur_inf ()->default_thread_detach_sc); | |
2888 | } | |
942fd805 | 2889 | |
c906108c SS |
2890 | \f |
2891 | /* Steal a send right called NAME in the inferior task, and make it PROC's | |
2892 | saved exception port. */ | |
2893 | static void | |
2894 | steal_exc_port (struct proc *proc, mach_port_t name) | |
2895 | { | |
2896 | error_t err; | |
2897 | mach_port_t port; | |
2898 | mach_msg_type_name_t port_type; | |
2899 | ||
2900 | if (!proc || !proc->inf->task) | |
8a3fe4f8 | 2901 | error (_("No inferior task.")); |
c906108c SS |
2902 | |
2903 | err = mach_port_extract_right (proc->inf->task->port, | |
2904 | name, MACH_MSG_TYPE_COPY_SEND, | |
2905 | &port, &port_type); | |
2906 | if (err) | |
a9a758e3 | 2907 | error (_("Couldn't extract send right %lu from inferior: %s"), |
dc672865 | 2908 | name, safe_strerror (err)); |
c906108c SS |
2909 | |
2910 | if (proc->saved_exc_port) | |
2911 | /* Get rid of our reference to the old one. */ | |
2912 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
2913 | ||
2914 | proc->saved_exc_port = port; | |
2915 | ||
c5aa993b | 2916 | if (!proc->exc_port) |
0963b4bd MS |
2917 | /* If PROC is a thread, we may not have set its exception port |
2918 | before. We can't use proc_steal_exc_port because it also sets | |
2919 | saved_exc_port. */ | |
c906108c | 2920 | { |
c5aa993b JM |
2921 | proc->exc_port = proc->inf->event_port; |
2922 | err = proc_set_exception_port (proc, proc->exc_port); | |
8a3fe4f8 | 2923 | error (_("Can't set exception port for %s: %s"), |
dc672865 | 2924 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
2925 | } |
2926 | } | |
942fd805 | 2927 | |
c906108c SS |
2928 | static void |
2929 | set_task_exc_port_cmd (char *args, int from_tty) | |
2930 | { | |
2931 | struct inf *inf = cur_inf (); | |
d8734c88 | 2932 | |
c906108c | 2933 | if (!args) |
8a3fe4f8 | 2934 | error (_("No argument to \"set task exception-port\" command.")); |
c906108c SS |
2935 | steal_exc_port (inf->task, parse_and_eval_address (args)); |
2936 | } | |
2937 | ||
c5aa993b | 2938 | static void |
c906108c SS |
2939 | set_stopped_cmd (char *args, int from_tty) |
2940 | { | |
2941 | cur_inf ()->stopped = _parse_bool_arg (args, "yes", "no", "set stopped"); | |
2942 | } | |
2943 | ||
2944 | static void | |
2945 | show_stopped_cmd (char *args, int from_tty) | |
2946 | { | |
2947 | struct inf *inf = active_inf (); | |
d8734c88 | 2948 | |
c906108c SS |
2949 | check_empty (args, "show stopped"); |
2950 | printf_unfiltered ("The inferior process %s stopped.\n", | |
2951 | inf->stopped ? "is" : "isn't"); | |
2952 | } | |
2953 | ||
c5aa993b | 2954 | static void |
c906108c SS |
2955 | set_sig_thread_cmd (char *args, int from_tty) |
2956 | { | |
c906108c SS |
2957 | struct inf *inf = cur_inf (); |
2958 | ||
c5aa993b | 2959 | if (!args || (!isdigit (*args) && strcmp (args, "none") != 0)) |
8a3fe4f8 AC |
2960 | error (_("Illegal argument to \"set signal-thread\" command.\n" |
2961 | "Should be an integer thread ID, or `none'.")); | |
c906108c SS |
2962 | |
2963 | if (strcmp (args, "none") == 0) | |
2964 | inf->signal_thread = 0; | |
2965 | else | |
2966 | { | |
c8d37639 | 2967 | ptid_t ptid = thread_id_to_pid (atoi (args)); |
d8734c88 | 2968 | |
c8d37639 | 2969 | if (ptid_equal (ptid, minus_one_ptid)) |
0963b4bd MS |
2970 | error (_("Thread ID %s not known. " |
2971 | "Use the \"info threads\" command to\n" | |
8a3fe4f8 | 2972 | "see the IDs of currently known threads."), args); |
ca08a94c | 2973 | inf->signal_thread = inf_tid_to_thread (inf, ptid_get_lwp (ptid)); |
c906108c SS |
2974 | } |
2975 | } | |
2976 | ||
2977 | static void | |
2978 | show_sig_thread_cmd (char *args, int from_tty) | |
2979 | { | |
2980 | struct inf *inf = active_inf (); | |
d8734c88 | 2981 | |
c906108c SS |
2982 | check_empty (args, "show signal-thread"); |
2983 | if (inf->signal_thread) | |
2984 | printf_unfiltered ("The signal thread is %s.\n", | |
2985 | proc_string (inf->signal_thread)); | |
2986 | else | |
2987 | printf_unfiltered ("There is no signal thread.\n"); | |
2988 | } | |
942fd805 | 2989 | |
c906108c | 2990 | \f |
c5aa993b | 2991 | static void |
c906108c SS |
2992 | set_signals_cmd (char *args, int from_tty) |
2993 | { | |
c906108c SS |
2994 | struct inf *inf = cur_inf (); |
2995 | ||
2996 | inf->want_signals = parse_bool_arg (args, "set signals"); | |
2997 | ||
2998 | if (inf->task && inf->want_signals != inf->traced) | |
2999 | /* Make this take effect immediately in a running process. */ | |
3000 | inf_set_traced (inf, inf->want_signals); | |
3001 | } | |
3002 | ||
3003 | static void | |
3004 | show_signals_cmd (char *args, int from_tty) | |
3005 | { | |
3006 | struct inf *inf = cur_inf (); | |
d8734c88 | 3007 | |
c906108c SS |
3008 | check_empty (args, "show signals"); |
3009 | printf_unfiltered ("The inferior process's signals %s intercepted.\n", | |
3010 | inf->task | |
3011 | ? (inf->traced ? "are" : "aren't") | |
3012 | : (inf->want_signals ? "will be" : "won't be")); | |
3013 | } | |
3014 | ||
c5aa993b | 3015 | static void |
c906108c SS |
3016 | set_exceptions_cmd (char *args, int from_tty) |
3017 | { | |
3018 | struct inf *inf = cur_inf (); | |
3019 | int val = parse_bool_arg (args, "set exceptions"); | |
3020 | ||
c26e9cbb YQ |
3021 | /* Make this take effect immediately in a running process. */ |
3022 | /* XXX */ ; | |
c906108c SS |
3023 | |
3024 | inf->want_exceptions = val; | |
3025 | } | |
3026 | ||
3027 | static void | |
3028 | show_exceptions_cmd (char *args, int from_tty) | |
3029 | { | |
3030 | struct inf *inf = cur_inf (); | |
d8734c88 | 3031 | |
c906108c SS |
3032 | check_empty (args, "show exceptions"); |
3033 | printf_unfiltered ("Exceptions in the inferior %s trapped.\n", | |
3034 | inf->task | |
3035 | ? (inf->want_exceptions ? "are" : "aren't") | |
3036 | : (inf->want_exceptions ? "will be" : "won't be")); | |
3037 | } | |
942fd805 | 3038 | |
c906108c SS |
3039 | \f |
3040 | static void | |
3041 | set_task_cmd (char *args, int from_tty) | |
3042 | { | |
942fd805 MK |
3043 | printf_unfiltered ("\"set task\" must be followed by the name" |
3044 | " of a task property.\n"); | |
c906108c SS |
3045 | } |
3046 | ||
3047 | static void | |
3048 | show_task_cmd (char *args, int from_tty) | |
3049 | { | |
3050 | struct inf *inf = cur_inf (); | |
3051 | ||
3052 | check_empty (args, "show task"); | |
3053 | ||
3054 | show_signals_cmd (0, from_tty); | |
3055 | show_exceptions_cmd (0, from_tty); | |
3056 | show_task_pause_cmd (0, from_tty); | |
3057 | ||
3058 | if (inf->pause_sc == 0) | |
3059 | show_thread_default_pause_cmd (0, from_tty); | |
3060 | show_thread_default_run_cmd (0, from_tty); | |
3061 | ||
3062 | if (inf->task) | |
3063 | { | |
3064 | show_stopped_cmd (0, from_tty); | |
3065 | show_sig_thread_cmd (0, from_tty); | |
3066 | } | |
3067 | ||
3068 | if (inf->detach_sc != 0) | |
3069 | show_task_detach_sc_cmd (0, from_tty); | |
3070 | if (inf->default_thread_detach_sc != 0) | |
3071 | show_thread_default_detach_sc_cmd (0, from_tty); | |
3072 | } | |
942fd805 | 3073 | |
c906108c SS |
3074 | \f |
3075 | static void | |
3076 | set_noninvasive_cmd (char *args, int from_tty) | |
3077 | { | |
3078 | /* Invert the sense of the arg for each component. */ | |
3079 | char *inv_args = parse_bool_arg (args, "set noninvasive") ? "off" : "on"; | |
3080 | ||
3081 | set_task_pause_cmd (inv_args, from_tty); | |
3082 | set_signals_cmd (inv_args, from_tty); | |
3083 | set_exceptions_cmd (inv_args, from_tty); | |
3084 | } | |
942fd805 | 3085 | |
c906108c SS |
3086 | \f |
3087 | static void | |
0cc6f43d | 3088 | info_port_rights (const char *args, mach_port_type_t only) |
c906108c SS |
3089 | { |
3090 | struct inf *inf = active_inf (); | |
3d6d86c6 | 3091 | struct value *vmark = value_mark (); |
c906108c SS |
3092 | |
3093 | if (args) | |
3094 | /* Explicit list of port rights. */ | |
3095 | { | |
3096 | while (*args) | |
3097 | { | |
3d6d86c6 | 3098 | struct value *val = parse_to_comma_and_eval (&args); |
c906108c SS |
3099 | long right = value_as_long (val); |
3100 | error_t err = | |
d8734c88 MS |
3101 | print_port_info (right, 0, inf->task->port, PORTINFO_DETAILS, |
3102 | stdout); | |
3103 | ||
c906108c | 3104 | if (err) |
8a3fe4f8 | 3105 | error (_("%ld: %s."), right, safe_strerror (err)); |
c906108c SS |
3106 | } |
3107 | } | |
3108 | else | |
3109 | /* Print all of them. */ | |
3110 | { | |
3111 | error_t err = | |
d8734c88 MS |
3112 | print_task_ports_info (inf->task->port, only, PORTINFO_DETAILS, |
3113 | stdout); | |
c906108c | 3114 | if (err) |
8a3fe4f8 | 3115 | error (_("%s."), safe_strerror (err)); |
c906108c SS |
3116 | } |
3117 | ||
3118 | value_free_to_mark (vmark); | |
3119 | } | |
3120 | ||
3121 | static void | |
3122 | info_send_rights_cmd (char *args, int from_tty) | |
3123 | { | |
3124 | info_port_rights (args, MACH_PORT_TYPE_SEND); | |
3125 | } | |
942fd805 | 3126 | |
c906108c SS |
3127 | static void |
3128 | info_recv_rights_cmd (char *args, int from_tty) | |
3129 | { | |
3130 | info_port_rights (args, MACH_PORT_TYPE_RECEIVE); | |
3131 | } | |
942fd805 | 3132 | |
c906108c SS |
3133 | static void |
3134 | info_port_sets_cmd (char *args, int from_tty) | |
3135 | { | |
3136 | info_port_rights (args, MACH_PORT_TYPE_PORT_SET); | |
3137 | } | |
942fd805 | 3138 | |
c906108c SS |
3139 | static void |
3140 | info_dead_names_cmd (char *args, int from_tty) | |
3141 | { | |
3142 | info_port_rights (args, MACH_PORT_TYPE_DEAD_NAME); | |
3143 | } | |
942fd805 | 3144 | |
c906108c SS |
3145 | static void |
3146 | info_port_rights_cmd (char *args, int from_tty) | |
3147 | { | |
3148 | info_port_rights (args, ~0); | |
3149 | } | |
942fd805 | 3150 | |
c906108c | 3151 | \f |
c5aa993b | 3152 | static void |
942fd805 | 3153 | add_task_commands (void) |
c906108c | 3154 | { |
1a966eab AC |
3155 | add_cmd ("pause", class_run, set_thread_default_pause_cmd, _("\ |
3156 | Set whether the new threads are suspended while gdb has control.\n\ | |
942fd805 MK |
3157 | This property normally has no effect because the whole task is\n\ |
3158 | suspended, however, that may be disabled with \"set task pause off\".\n\ | |
1a966eab | 3159 | The default value is \"off\"."), |
c906108c | 3160 | &set_thread_default_cmd_list); |
1a966eab AC |
3161 | add_cmd ("pause", no_class, show_thread_default_pause_cmd, _("\ |
3162 | Show whether new threads are suspended while gdb has control."), | |
c906108c | 3163 | &show_thread_default_cmd_list); |
942fd805 | 3164 | |
1a966eab AC |
3165 | add_cmd ("run", class_run, set_thread_default_run_cmd, _("\ |
3166 | Set whether new threads are allowed to run (once gdb has noticed them)."), | |
c906108c | 3167 | &set_thread_default_cmd_list); |
1a966eab AC |
3168 | add_cmd ("run", no_class, show_thread_default_run_cmd, _("\ |
3169 | Show whether new threads are allowed to run (once gdb has noticed them)."), | |
c906108c | 3170 | &show_thread_default_cmd_list); |
942fd805 | 3171 | |
c906108c | 3172 | add_cmd ("detach-suspend-count", class_run, set_thread_default_detach_sc_cmd, |
1a966eab | 3173 | _("Set the default detach-suspend-count value for new threads."), |
c906108c SS |
3174 | &set_thread_default_cmd_list); |
3175 | add_cmd ("detach-suspend-count", no_class, show_thread_default_detach_sc_cmd, | |
1a966eab | 3176 | _("Show the default detach-suspend-count value for new threads."), |
c906108c SS |
3177 | &show_thread_default_cmd_list); |
3178 | ||
1a966eab AC |
3179 | add_cmd ("signals", class_run, set_signals_cmd, _("\ |
3180 | Set whether the inferior process's signals will be intercepted.\n\ | |
3181 | Mach exceptions (such as breakpoint traps) are not affected."), | |
c906108c SS |
3182 | &setlist); |
3183 | add_alias_cmd ("sigs", "signals", class_run, 1, &setlist); | |
1a966eab AC |
3184 | add_cmd ("signals", no_class, show_signals_cmd, _("\ |
3185 | Show whether the inferior process's signals will be intercepted."), | |
c906108c SS |
3186 | &showlist); |
3187 | add_alias_cmd ("sigs", "signals", no_class, 1, &showlist); | |
3188 | ||
1a966eab AC |
3189 | add_cmd ("signal-thread", class_run, set_sig_thread_cmd, _("\ |
3190 | Set the thread that gdb thinks is the libc signal thread.\n\ | |
3191 | This thread is run when delivering a signal to a non-stopped process."), | |
c906108c SS |
3192 | &setlist); |
3193 | add_alias_cmd ("sigthread", "signal-thread", class_run, 1, &setlist); | |
1a966eab AC |
3194 | add_cmd ("signal-thread", no_class, show_sig_thread_cmd, _("\ |
3195 | Set the thread that gdb thinks is the libc signal thread."), | |
c906108c SS |
3196 | &showlist); |
3197 | add_alias_cmd ("sigthread", "signal-thread", no_class, 1, &showlist); | |
3198 | ||
1a966eab AC |
3199 | add_cmd ("stopped", class_run, set_stopped_cmd, _("\ |
3200 | Set whether gdb thinks the inferior process is stopped as with SIGSTOP.\n\ | |
3201 | Stopped process will be continued by sending them a signal."), | |
c906108c | 3202 | &setlist); |
fe79276f | 3203 | add_cmd ("stopped", no_class, show_stopped_cmd, _("\ |
1a966eab | 3204 | Show whether gdb thinks the inferior process is stopped as with SIGSTOP."), |
c906108c SS |
3205 | &showlist); |
3206 | ||
1a966eab AC |
3207 | add_cmd ("exceptions", class_run, set_exceptions_cmd, _("\ |
3208 | Set whether exceptions in the inferior process will be trapped.\n\ | |
942fd805 | 3209 | When exceptions are turned off, neither breakpoints nor single-stepping\n\ |
1a966eab | 3210 | will work."), |
c906108c SS |
3211 | &setlist); |
3212 | /* Allow `set exc' despite conflict with `set exception-port'. */ | |
3213 | add_alias_cmd ("exc", "exceptions", class_run, 1, &setlist); | |
1a966eab AC |
3214 | add_cmd ("exceptions", no_class, show_exceptions_cmd, _("\ |
3215 | Show whether exceptions in the inferior process will be trapped."), | |
c906108c SS |
3216 | &showlist); |
3217 | ||
3218 | add_prefix_cmd ("task", no_class, set_task_cmd, | |
1bedd215 | 3219 | _("Command prefix for setting task attributes."), |
c906108c SS |
3220 | &set_task_cmd_list, "set task ", 0, &setlist); |
3221 | add_prefix_cmd ("task", no_class, show_task_cmd, | |
1bedd215 | 3222 | _("Command prefix for showing task attributes."), |
c906108c SS |
3223 | &show_task_cmd_list, "show task ", 0, &showlist); |
3224 | ||
1a966eab AC |
3225 | add_cmd ("pause", class_run, set_task_pause_cmd, _("\ |
3226 | Set whether the task is suspended while gdb has control.\n\ | |
942fd805 MK |
3227 | A value of \"on\" takes effect immediately, otherwise nothing happens\n\ |
3228 | until the next time the program is continued.\n\ | |
3229 | When setting this to \"off\", \"set thread default pause on\" can be\n\ | |
1a966eab | 3230 | used to pause individual threads by default instead."), |
c906108c SS |
3231 | &set_task_cmd_list); |
3232 | add_cmd ("pause", no_class, show_task_pause_cmd, | |
1a966eab | 3233 | _("Show whether the task is suspended while gdb has control."), |
c906108c | 3234 | &show_task_cmd_list); |
942fd805 | 3235 | |
c906108c | 3236 | add_cmd ("detach-suspend-count", class_run, set_task_detach_sc_cmd, |
1a966eab | 3237 | _("Set the suspend count will leave on the thread when detaching."), |
c906108c SS |
3238 | &set_task_cmd_list); |
3239 | add_cmd ("detach-suspend-count", no_class, show_task_detach_sc_cmd, | |
0963b4bd MS |
3240 | _("Show the suspend count will leave " |
3241 | "on the thread when detaching."), | |
c906108c SS |
3242 | &show_task_cmd_list); |
3243 | ||
1a966eab AC |
3244 | add_cmd ("exception-port", no_class, set_task_exc_port_cmd, _("\ |
3245 | Set the task exception port to which we forward exceptions.\n\ | |
3246 | The argument should be the value of the send right in the task."), | |
c906108c SS |
3247 | &set_task_cmd_list); |
3248 | add_alias_cmd ("excp", "exception-port", no_class, 1, &set_task_cmd_list); | |
942fd805 MK |
3249 | add_alias_cmd ("exc-port", "exception-port", no_class, 1, |
3250 | &set_task_cmd_list); | |
c906108c SS |
3251 | |
3252 | /* A convenient way of turning on all options require to noninvasively | |
3253 | debug running tasks. */ | |
1a966eab AC |
3254 | add_cmd ("noninvasive", no_class, set_noninvasive_cmd, _("\ |
3255 | Set task options so that we interfere as little as possible.\n\ | |
942fd805 | 3256 | This is the same as setting `task pause', `exceptions', and\n\ |
1a966eab | 3257 | `signals' to the opposite value."), |
c906108c SS |
3258 | &setlist); |
3259 | ||
3260 | /* Commands to show information about the task's ports. */ | |
5f515954 AB |
3261 | add_info ("send-rights", info_send_rights_cmd, |
3262 | _("Show information about the task's send rights")); | |
3263 | add_info ("receive-rights", info_recv_rights_cmd, | |
3264 | _("Show information about the task's receive rights")); | |
3265 | add_info ("port-rights", info_port_rights_cmd, | |
3266 | _("Show information about the task's port rights")); | |
3267 | add_info ("port-sets", info_port_sets_cmd, | |
3268 | _("Show information about the task's port sets")); | |
3269 | add_info ("dead-names", info_dead_names_cmd, | |
3270 | _("Show information about the task's dead names")); | |
c906108c SS |
3271 | add_info_alias ("ports", "port-rights", 1); |
3272 | add_info_alias ("port", "port-rights", 1); | |
3273 | add_info_alias ("psets", "port-sets", 1); | |
3274 | } | |
c906108c | 3275 | |
942fd805 | 3276 | \f |
c906108c SS |
3277 | static void |
3278 | set_thread_pause_cmd (char *args, int from_tty) | |
3279 | { | |
3280 | struct proc *thread = cur_thread (); | |
3281 | int old_sc = thread->pause_sc; | |
d8734c88 | 3282 | |
c906108c SS |
3283 | thread->pause_sc = parse_bool_arg (args, "set thread pause"); |
3284 | if (old_sc == 0 && thread->pause_sc != 0 && thread->inf->pause_sc == 0) | |
3285 | /* If the task is currently unsuspended, immediately suspend it, | |
3286 | otherwise wait until the next time it gets control. */ | |
3287 | inf_suspend (thread->inf); | |
3288 | } | |
3289 | ||
3290 | static void | |
3291 | show_thread_pause_cmd (char *args, int from_tty) | |
3292 | { | |
3293 | struct proc *thread = cur_thread (); | |
3294 | int sc = thread->pause_sc; | |
d8734c88 | 3295 | |
c906108c SS |
3296 | check_empty (args, "show task pause"); |
3297 | printf_unfiltered ("Thread %s %s suspended while gdb has control%s.\n", | |
3298 | proc_string (thread), | |
3299 | sc ? "is" : "isn't", | |
942fd805 | 3300 | !sc && thread->inf->pause_sc ? " (but the task is)" : ""); |
c906108c SS |
3301 | } |
3302 | ||
3303 | static void | |
3304 | set_thread_run_cmd (char *args, int from_tty) | |
3305 | { | |
3306 | struct proc *thread = cur_thread (); | |
d8734c88 | 3307 | |
c906108c SS |
3308 | thread->run_sc = parse_bool_arg (args, "set thread run") ? 0 : 1; |
3309 | } | |
3310 | ||
3311 | static void | |
3312 | show_thread_run_cmd (char *args, int from_tty) | |
3313 | { | |
3314 | struct proc *thread = cur_thread (); | |
d8734c88 | 3315 | |
c906108c SS |
3316 | check_empty (args, "show thread run"); |
3317 | printf_unfiltered ("Thread %s %s allowed to run.", | |
3318 | proc_string (thread), | |
3319 | thread->run_sc == 0 ? "is" : "isn't"); | |
3320 | } | |
3321 | ||
3322 | static void | |
3323 | set_thread_detach_sc_cmd (char *args, int from_tty) | |
3324 | { | |
942fd805 MK |
3325 | cur_thread ()->detach_sc = parse_int_arg (args, |
3326 | "set thread detach-suspend-count"); | |
c906108c SS |
3327 | } |
3328 | ||
3329 | static void | |
3330 | show_thread_detach_sc_cmd (char *args, int from_tty) | |
3331 | { | |
3332 | struct proc *thread = cur_thread (); | |
d8734c88 | 3333 | |
c906108c | 3334 | check_empty (args, "show thread detach-suspend-count"); |
942fd805 MK |
3335 | printf_unfiltered ("Thread %s will be left with a suspend count" |
3336 | " of %d when detaching.\n", | |
c906108c SS |
3337 | proc_string (thread), |
3338 | thread->detach_sc); | |
3339 | } | |
3340 | ||
3341 | static void | |
3342 | set_thread_exc_port_cmd (char *args, int from_tty) | |
3343 | { | |
3344 | struct proc *thread = cur_thread (); | |
d8734c88 | 3345 | |
c906108c | 3346 | if (!args) |
8a3fe4f8 | 3347 | error (_("No argument to \"set thread exception-port\" command.")); |
c906108c SS |
3348 | steal_exc_port (thread, parse_and_eval_address (args)); |
3349 | } | |
3350 | ||
3351 | #if 0 | |
3352 | static void | |
3353 | show_thread_cmd (char *args, int from_tty) | |
3354 | { | |
3355 | struct proc *thread = cur_thread (); | |
d8734c88 | 3356 | |
c906108c SS |
3357 | check_empty (args, "show thread"); |
3358 | show_thread_run_cmd (0, from_tty); | |
3359 | show_thread_pause_cmd (0, from_tty); | |
3360 | if (thread->detach_sc != 0) | |
3361 | show_thread_detach_sc_cmd (0, from_tty); | |
3362 | } | |
3363 | #endif | |
3364 | ||
3365 | static void | |
3366 | thread_takeover_sc_cmd (char *args, int from_tty) | |
3367 | { | |
3368 | struct proc *thread = cur_thread (); | |
d8734c88 | 3369 | |
c906108c SS |
3370 | thread_basic_info_data_t _info; |
3371 | thread_basic_info_t info = &_info; | |
3372 | mach_msg_type_number_t info_len = THREAD_BASIC_INFO_COUNT; | |
3373 | error_t err = | |
c5aa993b | 3374 | thread_info (thread->port, THREAD_BASIC_INFO, (int *) &info, &info_len); |
c906108c | 3375 | if (err) |
8a3fe4f8 | 3376 | error (("%s."), safe_strerror (err)); |
c906108c SS |
3377 | thread->sc = info->suspend_count; |
3378 | if (from_tty) | |
3379 | printf_unfiltered ("Suspend count was %d.\n", thread->sc); | |
3380 | if (info != &_info) | |
942fd805 MK |
3381 | vm_deallocate (mach_task_self (), (vm_address_t) info, |
3382 | info_len * sizeof (int)); | |
c906108c SS |
3383 | } |
3384 | ||
942fd805 MK |
3385 | \f |
3386 | static void | |
3387 | add_thread_commands (void) | |
c906108c SS |
3388 | { |
3389 | add_prefix_cmd ("thread", no_class, set_thread_cmd, | |
1bedd215 | 3390 | _("Command prefix for setting thread properties."), |
c906108c SS |
3391 | &set_thread_cmd_list, "set thread ", 0, &setlist); |
3392 | add_prefix_cmd ("default", no_class, show_thread_cmd, | |
1bedd215 | 3393 | _("Command prefix for setting default thread properties."), |
c906108c SS |
3394 | &set_thread_default_cmd_list, "set thread default ", 0, |
3395 | &set_thread_cmd_list); | |
3396 | add_prefix_cmd ("thread", no_class, set_thread_default_cmd, | |
1bedd215 | 3397 | _("Command prefix for showing thread properties."), |
c906108c SS |
3398 | &show_thread_cmd_list, "show thread ", 0, &showlist); |
3399 | add_prefix_cmd ("default", no_class, show_thread_default_cmd, | |
1bedd215 | 3400 | _("Command prefix for showing default thread properties."), |
c906108c SS |
3401 | &show_thread_default_cmd_list, "show thread default ", 0, |
3402 | &show_thread_cmd_list); | |
3403 | ||
1a966eab AC |
3404 | add_cmd ("pause", class_run, set_thread_pause_cmd, _("\ |
3405 | Set whether the current thread is suspended while gdb has control.\n\ | |
942fd805 MK |
3406 | A value of \"on\" takes effect immediately, otherwise nothing happens\n\ |
3407 | until the next time the program is continued. This property normally\n\ | |
3408 | has no effect because the whole task is suspended, however, that may\n\ | |
3409 | be disabled with \"set task pause off\".\n\ | |
1a966eab | 3410 | The default value is \"off\"."), |
c906108c | 3411 | &set_thread_cmd_list); |
1a966eab AC |
3412 | add_cmd ("pause", no_class, show_thread_pause_cmd, _("\ |
3413 | Show whether the current thread is suspended while gdb has control."), | |
c906108c SS |
3414 | &show_thread_cmd_list); |
3415 | ||
3416 | add_cmd ("run", class_run, set_thread_run_cmd, | |
1a966eab | 3417 | _("Set whether the current thread is allowed to run."), |
c906108c SS |
3418 | &set_thread_cmd_list); |
3419 | add_cmd ("run", no_class, show_thread_run_cmd, | |
1a966eab | 3420 | _("Show whether the current thread is allowed to run."), |
c906108c SS |
3421 | &show_thread_cmd_list); |
3422 | ||
1a966eab AC |
3423 | add_cmd ("detach-suspend-count", class_run, set_thread_detach_sc_cmd, _("\ |
3424 | Set the suspend count will leave on the thread when detaching.\n\ | |
942fd805 | 3425 | Note that this is relative to suspend count when gdb noticed the thread;\n\ |
1a966eab | 3426 | use the `thread takeover-suspend-count' to force it to an absolute value."), |
c906108c | 3427 | &set_thread_cmd_list); |
1a966eab AC |
3428 | add_cmd ("detach-suspend-count", no_class, show_thread_detach_sc_cmd, _("\ |
3429 | Show the suspend count will leave on the thread when detaching.\n\ | |
942fd805 | 3430 | Note that this is relative to suspend count when gdb noticed the thread;\n\ |
1a966eab | 3431 | use the `thread takeover-suspend-count' to force it to an absolute value."), |
c906108c SS |
3432 | &show_thread_cmd_list); |
3433 | ||
1a966eab AC |
3434 | add_cmd ("exception-port", no_class, set_thread_exc_port_cmd, _("\ |
3435 | Set the thread exception port to which we forward exceptions.\n\ | |
942fd805 | 3436 | This overrides the task exception port.\n\ |
1a966eab | 3437 | The argument should be the value of the send right in the task."), |
c906108c SS |
3438 | &set_thread_cmd_list); |
3439 | add_alias_cmd ("excp", "exception-port", no_class, 1, &set_thread_cmd_list); | |
942fd805 MK |
3440 | add_alias_cmd ("exc-port", "exception-port", no_class, 1, |
3441 | &set_thread_cmd_list); | |
c906108c | 3442 | |
1a966eab AC |
3443 | add_cmd ("takeover-suspend-count", no_class, thread_takeover_sc_cmd, _("\ |
3444 | Force the threads absolute suspend-count to be gdb's.\n\ | |
942fd805 | 3445 | Prior to giving this command, gdb's thread suspend-counts are relative\n\ |
1a966eab | 3446 | to the thread's initial suspend-count when gdb notices the threads."), |
c906108c SS |
3447 | &thread_cmd_list); |
3448 | } | |
942fd805 | 3449 | |
c906108c | 3450 | \f |
3aa8c969 YQ |
3451 | |
3452 | /* -Wmissing-prototypes */ | |
3453 | extern initialize_file_ftype _initialize_gnu_nat; | |
3454 | ||
c906108c | 3455 | void |
942fd805 | 3456 | _initialize_gnu_nat (void) |
c906108c SS |
3457 | { |
3458 | proc_server = getproc (); | |
942fd805 | 3459 | |
c906108c SS |
3460 | add_task_commands (); |
3461 | add_thread_commands (); | |
cbe54154 PA |
3462 | add_setshow_boolean_cmd ("gnu-nat", class_maintenance, |
3463 | &gnu_debug_flag, | |
3464 | _("Set debugging output for the gnu backend."), | |
3465 | _("Show debugging output for the gnu backend."), | |
3466 | NULL, | |
3467 | NULL, | |
3468 | NULL, | |
3469 | &setdebuglist, | |
3470 | &showdebuglist); | |
c906108c SS |
3471 | } |
3472 | \f | |
3473 | #ifdef FLUSH_INFERIOR_CACHE | |
3474 | ||
3475 | /* When over-writing code on some machines the I-Cache must be flushed | |
3476 | explicitly, because it is not kept coherent by the lazy hardware. | |
3477 | This definitely includes breakpoints, for instance, or else we | |
0963b4bd | 3478 | end up looping in mysterious Bpt traps. */ |
c906108c SS |
3479 | |
3480 | void | |
fba45db2 | 3481 | flush_inferior_icache (CORE_ADDR pc, int amount) |
c906108c SS |
3482 | { |
3483 | vm_machine_attribute_val_t flush = MATTR_VAL_ICACHE_FLUSH; | |
c5aa993b JM |
3484 | error_t ret; |
3485 | ||
c289427b | 3486 | ret = vm_machine_attribute (gnu_current_inf->task->port, |
c906108c SS |
3487 | pc, |
3488 | amount, | |
3489 | MATTR_CACHE, | |
3490 | &flush); | |
3491 | if (ret != KERN_SUCCESS) | |
8a3fe4f8 | 3492 | warning (_("Error flushing inferior's cache : %s"), safe_strerror (ret)); |
c906108c | 3493 | } |
c5aa993b | 3494 | #endif /* FLUSH_INFERIOR_CACHE */ |