Commit | Line | Data |
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da59e081 | 1 | /* Interface GDB to the GNU Hurd. |
b811d2c2 | 2 | Copyright (C) 1992-2020 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 | |
cabb5f06 TS |
23 | /* Include this first, to pick up the <mach.h> 'thread_info' diversion. */ |
24 | #include "gnu-nat.h" | |
25 | ||
21389b7f TS |
26 | /* Mach/Hurd headers are not yet ready for C++ compilation. */ |
27 | extern "C" | |
28 | { | |
c906108c | 29 | #include <mach.h> |
c906108c SS |
30 | #include <mach_error.h> |
31 | #include <mach/exception.h> | |
942fd805 MK |
32 | #include <mach/message.h> |
33 | #include <mach/notify.h> | |
c906108c SS |
34 | #include <mach/vm_attributes.h> |
35 | ||
942fd805 MK |
36 | #include <hurd.h> |
37 | #include <hurd/interrupt.h> | |
c906108c SS |
38 | #include <hurd/msg.h> |
39 | #include <hurd/msg_request.h> | |
942fd805 | 40 | #include <hurd/process.h> |
96ffcb62 AS |
41 | /* Defined in <hurd/process.h>, but we need forward declarations from |
42 | <hurd/process_request.h> as well. */ | |
43 | #undef _process_user_ | |
942fd805 | 44 | #include <hurd/process_request.h> |
c906108c | 45 | #include <hurd/signal.h> |
c906108c SS |
46 | #include <hurd/sigpreempt.h> |
47 | ||
48 | #include <portinfo.h> | |
21389b7f TS |
49 | } |
50 | ||
51 | #include "defs.h" | |
52 | ||
53 | #include <ctype.h> | |
54 | #include <limits.h> | |
55 | #include <setjmp.h> | |
56 | #include <signal.h> | |
57 | #include <sys/ptrace.h> | |
9c4ac400 ST |
58 | #include <elf.h> |
59 | #include <link.h> | |
c906108c | 60 | |
c906108c SS |
61 | #include "inferior.h" |
62 | #include "symtab.h" | |
63 | #include "value.h" | |
64 | #include "language.h" | |
65 | #include "target.h" | |
268a13a5 | 66 | #include "gdbsupport/gdb_wait.h" |
366f550a | 67 | #include "gdbarch.h" |
c906108c SS |
68 | #include "gdbcmd.h" |
69 | #include "gdbcore.h" | |
942fd805 | 70 | #include "gdbthread.h" |
3b3e6bee | 71 | #include "gdb_obstack.h" |
c3187fa5 | 72 | #include "tid-parse.h" |
6c6ef69f | 73 | #include "nat/fork-inferior.h" |
c906108c | 74 | |
b4d1e8c7 | 75 | #include "inf-child.h" |
c906108c | 76 | |
21389b7f TS |
77 | /* MIG stubs are not yet ready for C++ compilation. */ |
78 | extern "C" | |
79 | { | |
c906108c SS |
80 | #include "exc_request_S.h" |
81 | #include "notify_S.h" | |
82 | #include "process_reply_S.h" | |
83 | #include "msg_reply_S.h" | |
84 | #include "exc_request_U.h" | |
85 | #include "msg_U.h" | |
b7ed9f3d ST |
86 | |
87 | #include "gnu-nat-mig.h" | |
21389b7f | 88 | } |
c906108c | 89 | |
53dff92c ST |
90 | struct gnu_nat_target *gnu_target; |
91 | ||
c906108c SS |
92 | static process_t proc_server = MACH_PORT_NULL; |
93 | ||
94 | /* If we've sent a proc_wait_request to the proc server, the pid of the | |
95 | process we asked about. We can only ever have one outstanding. */ | |
96 | int proc_wait_pid = 0; | |
97 | ||
98 | /* The number of wait requests we've sent, and expect replies from. */ | |
99 | int proc_waits_pending = 0; | |
100 | ||
491144b5 | 101 | bool gnu_debug_flag = false; |
c906108c SS |
102 | |
103 | /* Forward decls */ | |
104 | ||
f04a82ef | 105 | static struct inf *make_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 | 111 | |
c906108c SS |
112 | /* Evaluate RPC_EXPR in a scope with the variables MSGPORT and REFPORT bound |
113 | to INF's msg port and task port respectively. If it has no msg port, | |
114 | EIEIO is returned. INF must refer to a running process! */ | |
115 | #define INF_MSGPORT_RPC(inf, rpc_expr) \ | |
116 | HURD_MSGPORT_RPC (proc_getmsgport (proc_server, inf->pid, &msgport), \ | |
117 | (refport = inf->task->port, 0), 0, \ | |
118 | msgport ? (rpc_expr) : EIEIO) | |
119 | ||
120 | /* Like INF_MSGPORT_RPC, but will also resume the signal thread to ensure | |
121 | there's someone around to deal with the RPC (and resuspend things | |
122 | afterwards). This effects INF's threads' resume_sc count. */ | |
123 | #define INF_RESUME_MSGPORT_RPC(inf, rpc_expr) \ | |
124 | (inf_set_threads_resume_sc_for_signal_thread (inf) \ | |
0947023d | 125 | ? ({ kern_return_t __e; \ |
c906108c SS |
126 | inf_resume (inf); \ |
127 | __e = INF_MSGPORT_RPC (inf, rpc_expr); \ | |
128 | inf_suspend (inf); \ | |
129 | __e; }) \ | |
130 | : EIEIO) | |
131 | ||
c906108c SS |
132 | \f |
133 | /* The state passed by an exception message. */ | |
134 | struct exc_state | |
c5aa993b | 135 | { |
0963b4bd | 136 | int exception; /* The exception code. */ |
c5aa993b | 137 | int code, subcode; |
0963b4bd MS |
138 | mach_port_t handler; /* The real exception port to handle this. */ |
139 | mach_port_t reply; /* The reply port from the exception call. */ | |
c5aa993b | 140 | }; |
c906108c | 141 | |
0963b4bd | 142 | /* The results of the last wait an inf did. */ |
c906108c | 143 | struct inf_wait |
c5aa993b JM |
144 | { |
145 | struct target_waitstatus status; /* The status returned to gdb. */ | |
0963b4bd | 146 | struct exc_state exc; /* The exception that caused us to return. */ |
c5aa993b JM |
147 | struct proc *thread; /* The thread in question. */ |
148 | int suppress; /* Something trivial happened. */ | |
149 | }; | |
c906108c SS |
150 | |
151 | /* The state of an inferior. */ | |
152 | struct inf | |
c5aa993b JM |
153 | { |
154 | /* Fields describing the current inferior. */ | |
c906108c | 155 | |
c5aa993b JM |
156 | struct proc *task; /* The mach task. */ |
157 | struct proc *threads; /* A linked list of all threads in TASK. */ | |
c906108c | 158 | |
0963b4bd MS |
159 | /* True if THREADS needn't be validated by querying the task. We |
160 | assume that we and the task in question are the only ones | |
161 | frobbing the thread list, so as long as we don't let any code | |
162 | run, we don't have to worry about THREADS changing. */ | |
c5aa993b | 163 | int threads_up_to_date; |
c906108c | 164 | |
0963b4bd | 165 | pid_t pid; /* The real system PID. */ |
c906108c | 166 | |
c5aa993b | 167 | struct inf_wait wait; /* What to return from target_wait. */ |
c906108c | 168 | |
0963b4bd MS |
169 | /* One thread proc in INF may be in `single-stepping mode'. This |
170 | is it. */ | |
c5aa993b | 171 | struct proc *step_thread; |
c906108c | 172 | |
c5aa993b JM |
173 | /* The thread we think is the signal thread. */ |
174 | struct proc *signal_thread; | |
c906108c | 175 | |
c5aa993b | 176 | mach_port_t event_port; /* Where we receive various msgs. */ |
c906108c | 177 | |
c5aa993b JM |
178 | /* True if we think at least one thread in the inferior could currently be |
179 | running. */ | |
180 | unsigned int running:1; | |
c906108c | 181 | |
c5aa993b JM |
182 | /* True if the process has stopped (in the proc server sense). Note that |
183 | since a proc server `stop' leaves the signal thread running, the inf can | |
184 | be RUNNING && STOPPED... */ | |
185 | unsigned int stopped:1; | |
cce74817 | 186 | |
c5aa993b JM |
187 | /* True if the inferior has no message port. */ |
188 | unsigned int nomsg:1; | |
c906108c | 189 | |
c5aa993b JM |
190 | /* True if the inferior is traced. */ |
191 | unsigned int traced:1; | |
c906108c | 192 | |
c5aa993b JM |
193 | /* True if we shouldn't try waiting for the inferior, usually because we |
194 | can't for some reason. */ | |
195 | unsigned int no_wait:1; | |
c906108c | 196 | |
c5aa993b | 197 | /* When starting a new inferior, we don't try to validate threads until all |
c82f56d9 | 198 | the proper execs have been done, which this flag states we still |
c5aa993b | 199 | expect to happen. */ |
c82f56d9 | 200 | unsigned int pending_execs:1; |
c906108c | 201 | |
0963b4bd | 202 | /* Fields describing global state. */ |
c906108c | 203 | |
c5aa993b JM |
204 | /* The task suspend count used when gdb has control. This is normally 1 to |
205 | make things easier for us, but sometimes (like when attaching to vital | |
206 | system servers) it may be desirable to let the task continue to run | |
207 | (pausing individual threads as necessary). */ | |
208 | int pause_sc; | |
c906108c | 209 | |
c5aa993b JM |
210 | /* The task suspend count left when detaching from a task. */ |
211 | int detach_sc; | |
c906108c | 212 | |
c5aa993b JM |
213 | /* The initial values used for the run_sc and pause_sc of newly discovered |
214 | threads -- see the definition of those fields in struct proc. */ | |
215 | int default_thread_run_sc; | |
216 | int default_thread_pause_sc; | |
217 | int default_thread_detach_sc; | |
c906108c | 218 | |
c5aa993b JM |
219 | /* True if the process should be traced when started/attached. Newly |
220 | started processes *must* be traced at first to exec them properly, but | |
221 | if this is false, tracing is turned off as soon it has done so. */ | |
222 | int want_signals; | |
c906108c | 223 | |
c5aa993b JM |
224 | /* True if exceptions from the inferior process should be trapped. This |
225 | must be on to use breakpoints. */ | |
226 | int want_exceptions; | |
227 | }; | |
c906108c SS |
228 | |
229 | ||
c5aa993b JM |
230 | int |
231 | __proc_pid (struct proc *proc) | |
c906108c SS |
232 | { |
233 | return proc->inf->pid; | |
234 | } | |
942fd805 | 235 | |
c906108c SS |
236 | \f |
237 | /* Update PROC's real suspend count to match it's desired one. Returns true | |
238 | if we think PROC is now in a runnable state. */ | |
239 | int | |
14a8ad62 | 240 | gnu_nat_target::proc_update_sc (struct proc *proc) |
c906108c SS |
241 | { |
242 | int running; | |
c5aa993b | 243 | int err = 0; |
c906108c SS |
244 | int delta = proc->sc - proc->cur_sc; |
245 | ||
246 | if (delta) | |
247 | proc_debug (proc, "sc: %d --> %d", proc->cur_sc, proc->sc); | |
248 | ||
249 | if (proc->sc == 0 && proc->state_changed) | |
0963b4bd | 250 | /* Since PROC may start running, we must write back any state changes. */ |
c906108c | 251 | { |
bf62e5b4 | 252 | gdb_assert (proc_is_thread (proc)); |
c906108c SS |
253 | proc_debug (proc, "storing back changed thread state"); |
254 | err = thread_set_state (proc->port, THREAD_STATE_FLAVOR, | |
f75c77fc | 255 | (thread_state_t) &proc->state, THREAD_STATE_SIZE); |
c5aa993b | 256 | if (!err) |
c906108c SS |
257 | proc->state_changed = 0; |
258 | } | |
259 | ||
260 | if (delta > 0) | |
942fd805 MK |
261 | { |
262 | while (delta-- > 0 && !err) | |
263 | { | |
264 | if (proc_is_task (proc)) | |
265 | err = task_suspend (proc->port); | |
266 | else | |
267 | err = thread_suspend (proc->port); | |
268 | } | |
269 | } | |
c906108c | 270 | else |
942fd805 MK |
271 | { |
272 | while (delta++ < 0 && !err) | |
273 | { | |
274 | if (proc_is_task (proc)) | |
275 | err = task_resume (proc->port); | |
276 | else | |
277 | err = thread_resume (proc->port); | |
278 | } | |
279 | } | |
c5aa993b | 280 | if (!err) |
c906108c SS |
281 | proc->cur_sc = proc->sc; |
282 | ||
283 | /* If we got an error, then the task/thread has disappeared. */ | |
284 | running = !err && proc->sc == 0; | |
285 | ||
286 | proc_debug (proc, "is %s", err ? "dead" : running ? "running" : "suspended"); | |
287 | if (err) | |
dc672865 | 288 | proc_debug (proc, "err = %s", safe_strerror (err)); |
c906108c SS |
289 | |
290 | if (running) | |
291 | { | |
292 | proc->aborted = 0; | |
293 | proc->state_valid = proc->state_changed = 0; | |
294 | proc->fetched_regs = 0; | |
295 | } | |
296 | ||
297 | return running; | |
298 | } | |
942fd805 | 299 | |
c906108c SS |
300 | \f |
301 | /* Thread_abort is called on PROC if needed. PROC must be a thread proc. | |
302 | If PROC is deemed `precious', then nothing is done unless FORCE is true. | |
303 | In particular, a thread is precious if it's running (in which case forcing | |
304 | it includes suspending it first), or if it has an exception pending. */ | |
305 | void | |
14a8ad62 | 306 | gnu_nat_target::proc_abort (struct proc *proc, int force) |
c906108c | 307 | { |
bf62e5b4 | 308 | gdb_assert (proc_is_thread (proc)); |
c906108c | 309 | |
c5aa993b | 310 | if (!proc->aborted) |
c906108c SS |
311 | { |
312 | struct inf *inf = proc->inf; | |
313 | int running = (proc->cur_sc == 0 && inf->task->cur_sc == 0); | |
314 | ||
315 | if (running && force) | |
316 | { | |
317 | proc->sc = 1; | |
318 | inf_update_suspends (proc->inf); | |
319 | running = 0; | |
8a3fe4f8 | 320 | warning (_("Stopped %s."), proc_string (proc)); |
c906108c SS |
321 | } |
322 | else if (proc == inf->wait.thread && inf->wait.exc.reply && !force) | |
323 | /* An exception is pending on PROC, which don't mess with. */ | |
324 | running = 1; | |
325 | ||
c5aa993b | 326 | if (!running) |
c906108c SS |
327 | /* We only abort the thread if it's not actually running. */ |
328 | { | |
329 | thread_abort (proc->port); | |
330 | proc_debug (proc, "aborted"); | |
331 | proc->aborted = 1; | |
332 | } | |
333 | else | |
334 | proc_debug (proc, "not aborting"); | |
335 | } | |
336 | } | |
337 | ||
338 | /* Make sure that the state field in PROC is up to date, and return a pointer | |
339 | to it, or 0 if something is wrong. If WILL_MODIFY is true, makes sure | |
340 | that the thread is stopped and aborted first, and sets the state_changed | |
341 | field in PROC to true. */ | |
342 | thread_state_t | |
14a8ad62 | 343 | gnu_nat_target::proc_get_state (struct proc *proc, int will_modify) |
c906108c SS |
344 | { |
345 | int was_aborted = proc->aborted; | |
346 | ||
347 | proc_debug (proc, "updating state info%s", | |
348 | will_modify ? " (with intention to modify)" : ""); | |
349 | ||
350 | proc_abort (proc, will_modify); | |
351 | ||
c5aa993b | 352 | if (!was_aborted && proc->aborted) |
c906108c SS |
353 | /* PROC's state may have changed since we last fetched it. */ |
354 | proc->state_valid = 0; | |
355 | ||
c5aa993b | 356 | if (!proc->state_valid) |
c906108c SS |
357 | { |
358 | mach_msg_type_number_t state_size = THREAD_STATE_SIZE; | |
0947023d | 359 | kern_return_t err = |
d8734c88 MS |
360 | thread_get_state (proc->port, THREAD_STATE_FLAVOR, |
361 | (thread_state_t) &proc->state, &state_size); | |
362 | ||
c906108c SS |
363 | proc_debug (proc, "getting thread state"); |
364 | proc->state_valid = !err; | |
365 | } | |
366 | ||
367 | if (proc->state_valid) | |
368 | { | |
369 | if (will_modify) | |
370 | proc->state_changed = 1; | |
f75c77fc | 371 | return (thread_state_t) &proc->state; |
c906108c SS |
372 | } |
373 | else | |
374 | return 0; | |
375 | } | |
942fd805 | 376 | |
c906108c SS |
377 | \f |
378 | /* Set PORT to PROC's exception port. */ | |
0947023d | 379 | kern_return_t |
14a8ad62 | 380 | gnu_nat_target::proc_get_exception_port (struct proc * proc, mach_port_t * port) |
c906108c SS |
381 | { |
382 | if (proc_is_task (proc)) | |
383 | return task_get_exception_port (proc->port, port); | |
384 | else | |
385 | return thread_get_exception_port (proc->port, port); | |
386 | } | |
387 | ||
388 | /* Set PROC's exception port to PORT. */ | |
0947023d | 389 | kern_return_t |
14a8ad62 | 390 | gnu_nat_target::proc_set_exception_port (struct proc * proc, mach_port_t port) |
c906108c | 391 | { |
a9a758e3 | 392 | proc_debug (proc, "setting exception port: %lu", port); |
c906108c SS |
393 | if (proc_is_task (proc)) |
394 | return task_set_exception_port (proc->port, port); | |
395 | else | |
396 | return thread_set_exception_port (proc->port, port); | |
397 | } | |
398 | ||
399 | /* Get PROC's exception port, cleaning up a bit if proc has died. */ | |
14a8ad62 ST |
400 | mach_port_t |
401 | gnu_nat_target::_proc_get_exc_port (struct proc *proc) | |
c906108c SS |
402 | { |
403 | mach_port_t exc_port; | |
0947023d | 404 | kern_return_t err = proc_get_exception_port (proc, &exc_port); |
c906108c SS |
405 | |
406 | if (err) | |
407 | /* PROC must be dead. */ | |
408 | { | |
409 | if (proc->exc_port) | |
410 | mach_port_deallocate (mach_task_self (), proc->exc_port); | |
411 | proc->exc_port = MACH_PORT_NULL; | |
412 | if (proc->saved_exc_port) | |
413 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
414 | proc->saved_exc_port = MACH_PORT_NULL; | |
415 | } | |
416 | ||
417 | return exc_port; | |
418 | } | |
419 | ||
0963b4bd MS |
420 | /* Replace PROC's exception port with EXC_PORT, unless it's already |
421 | been done. Stash away any existing exception port so we can | |
422 | restore it later. */ | |
c906108c | 423 | void |
14a8ad62 | 424 | gnu_nat_target::proc_steal_exc_port (struct proc *proc, mach_port_t exc_port) |
c906108c SS |
425 | { |
426 | mach_port_t cur_exc_port = _proc_get_exc_port (proc); | |
427 | ||
428 | if (cur_exc_port) | |
429 | { | |
0947023d | 430 | kern_return_t err = 0; |
c906108c | 431 | |
a9a758e3 | 432 | proc_debug (proc, "inserting exception port: %lu", exc_port); |
c906108c SS |
433 | |
434 | if (cur_exc_port != exc_port) | |
435 | /* Put in our exception port. */ | |
436 | err = proc_set_exception_port (proc, exc_port); | |
437 | ||
438 | if (err || cur_exc_port == proc->exc_port) | |
439 | /* We previously set the exception port, and it's still set. So we | |
440 | just keep the old saved port which is what the proc set. */ | |
441 | { | |
442 | if (cur_exc_port) | |
443 | mach_port_deallocate (mach_task_self (), cur_exc_port); | |
444 | } | |
445 | else | |
0963b4bd | 446 | /* Keep a copy of PROC's old exception port so it can be restored. */ |
c906108c SS |
447 | { |
448 | if (proc->saved_exc_port) | |
449 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
450 | proc->saved_exc_port = cur_exc_port; | |
451 | } | |
452 | ||
a9a758e3 | 453 | proc_debug (proc, "saved exception port: %lu", proc->saved_exc_port); |
c906108c SS |
454 | |
455 | if (!err) | |
456 | proc->exc_port = exc_port; | |
457 | else | |
8a3fe4f8 | 458 | warning (_("Error setting exception port for %s: %s"), |
dc672865 | 459 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
460 | } |
461 | } | |
462 | ||
463 | /* If we previously replaced PROC's exception port, put back what we | |
464 | found there at the time, unless *our* exception port has since been | |
465 | overwritten, in which case who knows what's going on. */ | |
466 | void | |
14a8ad62 | 467 | gnu_nat_target::proc_restore_exc_port (struct proc *proc) |
c906108c SS |
468 | { |
469 | mach_port_t cur_exc_port = _proc_get_exc_port (proc); | |
470 | ||
471 | if (cur_exc_port) | |
472 | { | |
0947023d | 473 | kern_return_t err = 0; |
c906108c SS |
474 | |
475 | proc_debug (proc, "restoring real exception port"); | |
476 | ||
477 | if (proc->exc_port == cur_exc_port) | |
478 | /* Our's is still there. */ | |
479 | err = proc_set_exception_port (proc, proc->saved_exc_port); | |
480 | ||
481 | if (proc->saved_exc_port) | |
482 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
483 | proc->saved_exc_port = MACH_PORT_NULL; | |
484 | ||
485 | if (!err) | |
486 | proc->exc_port = MACH_PORT_NULL; | |
487 | else | |
8a3fe4f8 | 488 | warning (_("Error setting exception port for %s: %s"), |
dc672865 | 489 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
490 | } |
491 | } | |
942fd805 | 492 | |
c906108c SS |
493 | \f |
494 | /* Turns hardware tracing in PROC on or off when SET is true or false, | |
495 | respectively. Returns true on success. */ | |
496 | int | |
14a8ad62 | 497 | gnu_nat_target::proc_trace (struct proc *proc, int set) |
c906108c SS |
498 | { |
499 | thread_state_t state = proc_get_state (proc, 1); | |
500 | ||
c5aa993b | 501 | if (!state) |
0963b4bd | 502 | return 0; /* The thread must be dead. */ |
c906108c SS |
503 | |
504 | proc_debug (proc, "tracing %s", set ? "on" : "off"); | |
c5aa993b | 505 | |
c906108c SS |
506 | if (set) |
507 | { | |
508 | /* XXX We don't get the exception unless the thread has its own | |
0963b4bd | 509 | exception port???? */ |
c906108c SS |
510 | if (proc->exc_port == MACH_PORT_NULL) |
511 | proc_steal_exc_port (proc, proc->inf->event_port); | |
512 | THREAD_STATE_SET_TRACED (state); | |
513 | } | |
514 | else | |
515 | THREAD_STATE_CLEAR_TRACED (state); | |
516 | ||
517 | return 1; | |
518 | } | |
942fd805 | 519 | |
c906108c SS |
520 | \f |
521 | /* A variable from which to assign new TIDs. */ | |
522 | static int next_thread_id = 1; | |
523 | ||
524 | /* Returns a new proc structure with the given fields. Also adds a | |
525 | notification for PORT becoming dead to be sent to INF's notify port. */ | |
526 | struct proc * | |
14a8ad62 | 527 | gnu_nat_target::make_proc (struct inf *inf, mach_port_t port, int tid) |
c906108c | 528 | { |
0947023d | 529 | kern_return_t err; |
c906108c | 530 | mach_port_t prev_port = MACH_PORT_NULL; |
8d749320 | 531 | struct proc *proc = XNEW (struct proc); |
c906108c SS |
532 | |
533 | proc->port = port; | |
534 | proc->tid = tid; | |
535 | proc->inf = inf; | |
536 | proc->next = 0; | |
537 | proc->saved_exc_port = MACH_PORT_NULL; | |
538 | proc->exc_port = MACH_PORT_NULL; | |
539 | ||
540 | proc->sc = 0; | |
541 | proc->cur_sc = 0; | |
542 | ||
543 | /* Note that these are all the values for threads; the task simply uses the | |
544 | corresponding field in INF directly. */ | |
545 | proc->run_sc = inf->default_thread_run_sc; | |
546 | proc->pause_sc = inf->default_thread_pause_sc; | |
547 | proc->detach_sc = inf->default_thread_detach_sc; | |
548 | proc->resume_sc = proc->run_sc; | |
549 | ||
550 | proc->aborted = 0; | |
551 | proc->dead = 0; | |
552 | proc->state_valid = 0; | |
553 | proc->state_changed = 0; | |
554 | ||
555 | proc_debug (proc, "is new"); | |
556 | ||
557 | /* Get notified when things die. */ | |
558 | err = | |
c5aa993b | 559 | mach_port_request_notification (mach_task_self (), port, |
c906108c SS |
560 | MACH_NOTIFY_DEAD_NAME, 1, |
561 | inf->event_port, | |
562 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
563 | &prev_port); | |
564 | if (err) | |
a9a758e3 | 565 | warning (_("Couldn't request notification for port %lu: %s"), |
dc672865 | 566 | port, safe_strerror (err)); |
c906108c SS |
567 | else |
568 | { | |
a9a758e3 | 569 | proc_debug (proc, "notifications to: %lu", inf->event_port); |
c906108c SS |
570 | if (prev_port != MACH_PORT_NULL) |
571 | mach_port_deallocate (mach_task_self (), prev_port); | |
572 | } | |
573 | ||
574 | if (inf->want_exceptions) | |
942fd805 MK |
575 | { |
576 | if (proc_is_task (proc)) | |
577 | /* Make the task exception port point to us. */ | |
578 | proc_steal_exc_port (proc, inf->event_port); | |
579 | else | |
580 | /* Just clear thread exception ports -- they default to the | |
581 | task one. */ | |
582 | proc_steal_exc_port (proc, MACH_PORT_NULL); | |
583 | } | |
c906108c SS |
584 | |
585 | return proc; | |
586 | } | |
587 | ||
588 | /* Frees PROC and any resources it uses, and returns the value of PROC's | |
589 | next field. */ | |
590 | struct proc * | |
14a8ad62 | 591 | gnu_nat_target::_proc_free (struct proc *proc) |
c906108c SS |
592 | { |
593 | struct inf *inf = proc->inf; | |
594 | struct proc *next = proc->next; | |
595 | ||
596 | proc_debug (proc, "freeing..."); | |
597 | ||
598 | if (proc == inf->step_thread) | |
599 | /* Turn off single stepping. */ | |
600 | inf_set_step_thread (inf, 0); | |
601 | if (proc == inf->wait.thread) | |
602 | inf_clear_wait (inf); | |
603 | if (proc == inf->signal_thread) | |
604 | inf->signal_thread = 0; | |
605 | ||
606 | if (proc->port != MACH_PORT_NULL) | |
607 | { | |
608 | if (proc->exc_port != MACH_PORT_NULL) | |
609 | /* Restore the original exception port. */ | |
610 | proc_restore_exc_port (proc); | |
611 | if (proc->cur_sc != 0) | |
612 | /* Resume the thread/task. */ | |
613 | { | |
614 | proc->sc = 0; | |
615 | proc_update_sc (proc); | |
616 | } | |
617 | mach_port_deallocate (mach_task_self (), proc->port); | |
618 | } | |
619 | ||
b8c9b27d | 620 | xfree (proc); |
c906108c SS |
621 | return next; |
622 | } | |
942fd805 | 623 | |
c906108c | 624 | \f |
f04a82ef | 625 | static struct inf * |
fba45db2 | 626 | make_inf (void) |
c906108c | 627 | { |
8d749320 | 628 | struct inf *inf = XNEW (struct inf); |
c906108c SS |
629 | |
630 | inf->task = 0; | |
631 | inf->threads = 0; | |
632 | inf->threads_up_to_date = 0; | |
633 | inf->pid = 0; | |
634 | inf->wait.status.kind = TARGET_WAITKIND_SPURIOUS; | |
635 | inf->wait.thread = 0; | |
636 | inf->wait.exc.handler = MACH_PORT_NULL; | |
637 | inf->wait.exc.reply = MACH_PORT_NULL; | |
638 | inf->step_thread = 0; | |
639 | inf->signal_thread = 0; | |
640 | inf->event_port = MACH_PORT_NULL; | |
c906108c | 641 | inf->running = 0; |
cce74817 JM |
642 | inf->stopped = 0; |
643 | inf->nomsg = 1; | |
c906108c SS |
644 | inf->traced = 0; |
645 | inf->no_wait = 0; | |
646 | inf->pending_execs = 0; | |
647 | inf->pause_sc = 1; | |
648 | inf->detach_sc = 0; | |
649 | inf->default_thread_run_sc = 0; | |
650 | inf->default_thread_pause_sc = 0; | |
651 | inf->default_thread_detach_sc = 0; | |
652 | inf->want_signals = 1; /* By default */ | |
653 | inf->want_exceptions = 1; /* By default */ | |
654 | ||
655 | return inf; | |
656 | } | |
657 | ||
942fd805 | 658 | /* Clear INF's target wait status. */ |
c906108c | 659 | void |
14a8ad62 | 660 | gnu_nat_target::inf_clear_wait (struct inf *inf) |
c906108c SS |
661 | { |
662 | inf_debug (inf, "clearing wait"); | |
663 | inf->wait.status.kind = TARGET_WAITKIND_SPURIOUS; | |
664 | inf->wait.thread = 0; | |
665 | inf->wait.suppress = 0; | |
666 | if (inf->wait.exc.handler != MACH_PORT_NULL) | |
667 | { | |
668 | mach_port_deallocate (mach_task_self (), inf->wait.exc.handler); | |
669 | inf->wait.exc.handler = MACH_PORT_NULL; | |
670 | } | |
671 | if (inf->wait.exc.reply != MACH_PORT_NULL) | |
672 | { | |
673 | mach_port_deallocate (mach_task_self (), inf->wait.exc.reply); | |
674 | inf->wait.exc.reply = MACH_PORT_NULL; | |
675 | } | |
676 | } | |
942fd805 | 677 | |
c906108c SS |
678 | \f |
679 | void | |
14a8ad62 | 680 | gnu_nat_target::inf_cleanup (struct inf *inf) |
c906108c SS |
681 | { |
682 | inf_debug (inf, "cleanup"); | |
683 | ||
684 | inf_clear_wait (inf); | |
685 | ||
686 | inf_set_pid (inf, -1); | |
687 | inf->pid = 0; | |
cce74817 JM |
688 | inf->running = 0; |
689 | inf->stopped = 0; | |
690 | inf->nomsg = 1; | |
c906108c SS |
691 | inf->traced = 0; |
692 | inf->no_wait = 0; | |
c906108c SS |
693 | inf->pending_execs = 0; |
694 | ||
695 | if (inf->event_port) | |
696 | { | |
697 | mach_port_destroy (mach_task_self (), inf->event_port); | |
698 | inf->event_port = MACH_PORT_NULL; | |
699 | } | |
700 | } | |
701 | ||
702 | void | |
14a8ad62 | 703 | gnu_nat_target::inf_startup (struct inf *inf, int pid) |
c906108c | 704 | { |
0947023d | 705 | kern_return_t err; |
c906108c SS |
706 | |
707 | inf_debug (inf, "startup: pid = %d", pid); | |
708 | ||
709 | inf_cleanup (inf); | |
710 | ||
711 | /* Make the port on which we receive all events. */ | |
712 | err = mach_port_allocate (mach_task_self (), | |
713 | MACH_PORT_RIGHT_RECEIVE, &inf->event_port); | |
714 | if (err) | |
8a3fe4f8 | 715 | error (_("Error allocating event port: %s"), safe_strerror (err)); |
c906108c SS |
716 | |
717 | /* Make a send right for it, so we can easily copy it for other people. */ | |
718 | mach_port_insert_right (mach_task_self (), inf->event_port, | |
719 | inf->event_port, MACH_MSG_TYPE_MAKE_SEND); | |
720 | inf_set_pid (inf, pid); | |
721 | } | |
942fd805 | 722 | |
c906108c | 723 | \f |
942fd805 | 724 | /* Close current process, if any, and attach INF to process PORT. */ |
c5aa993b | 725 | void |
14a8ad62 | 726 | gnu_nat_target::inf_set_pid (struct inf *inf, pid_t pid) |
c906108c SS |
727 | { |
728 | task_t task_port; | |
729 | struct proc *task = inf->task; | |
730 | ||
731 | inf_debug (inf, "setting pid: %d", pid); | |
732 | ||
733 | if (pid < 0) | |
734 | task_port = MACH_PORT_NULL; | |
735 | else | |
736 | { | |
0947023d | 737 | kern_return_t err = proc_pid2task (proc_server, pid, &task_port); |
d8734c88 | 738 | |
c906108c | 739 | if (err) |
0963b4bd MS |
740 | error (_("Error getting task for pid %d: %s"), |
741 | pid, safe_strerror (err)); | |
c906108c SS |
742 | } |
743 | ||
a9a758e3 | 744 | inf_debug (inf, "setting task: %lu", task_port); |
c906108c SS |
745 | |
746 | if (inf->pause_sc) | |
747 | task_suspend (task_port); | |
748 | ||
749 | if (task && task->port != task_port) | |
750 | { | |
751 | inf->task = 0; | |
0963b4bd MS |
752 | inf_validate_procs (inf); /* Trash all the threads. */ |
753 | _proc_free (task); /* And the task. */ | |
c906108c SS |
754 | } |
755 | ||
756 | if (task_port != MACH_PORT_NULL) | |
757 | { | |
758 | inf->task = make_proc (inf, task_port, PROC_TID_TASK); | |
759 | inf->threads_up_to_date = 0; | |
760 | } | |
761 | ||
762 | if (inf->task) | |
763 | { | |
764 | inf->pid = pid; | |
765 | if (inf->pause_sc) | |
942fd805 MK |
766 | /* Reflect task_suspend above. */ |
767 | inf->task->sc = inf->task->cur_sc = 1; | |
c906108c SS |
768 | } |
769 | else | |
770 | inf->pid = -1; | |
771 | } | |
942fd805 | 772 | |
c906108c | 773 | \f |
cce74817 JM |
774 | /* Validates INF's stopped, nomsg and traced field from the actual |
775 | proc server state. Note that the traced field is only updated from | |
776 | the proc server state if we do not have a message port. If we do | |
777 | have a message port we'd better look at the tracemask itself. */ | |
14a8ad62 ST |
778 | void |
779 | gnu_nat_target::inf_validate_procinfo (struct inf *inf) | |
c906108c SS |
780 | { |
781 | char *noise; | |
782 | mach_msg_type_number_t noise_len = 0; | |
783 | struct procinfo *pi; | |
784 | mach_msg_type_number_t pi_len = 0; | |
785 | int info_flags = 0; | |
0947023d | 786 | kern_return_t err = |
d8734c88 MS |
787 | proc_getprocinfo (proc_server, inf->pid, &info_flags, |
788 | (procinfo_t *) &pi, &pi_len, &noise, &noise_len); | |
c906108c | 789 | |
c5aa993b | 790 | if (!err) |
c906108c SS |
791 | { |
792 | inf->stopped = !!(pi->state & PI_STOPPED); | |
cce74817 JM |
793 | inf->nomsg = !!(pi->state & PI_NOMSG); |
794 | if (inf->nomsg) | |
795 | inf->traced = !!(pi->state & PI_TRACED); | |
a441dfbc ST |
796 | vm_deallocate (mach_task_self (), (vm_address_t) pi, |
797 | pi_len * sizeof (*(procinfo_t) 0)); | |
c906108c | 798 | if (noise_len > 0) |
c5aa993b | 799 | vm_deallocate (mach_task_self (), (vm_address_t) noise, noise_len); |
c906108c SS |
800 | } |
801 | } | |
802 | ||
f90b2b1d JK |
803 | /* Validates INF's task suspend count. If it's higher than we expect, |
804 | verify with the user before `stealing' the extra count. */ | |
14a8ad62 ST |
805 | void |
806 | gnu_nat_target::inf_validate_task_sc (struct inf *inf) | |
c906108c | 807 | { |
f90b2b1d JK |
808 | char *noise; |
809 | mach_msg_type_number_t noise_len = 0; | |
810 | struct procinfo *pi; | |
811 | mach_msg_type_number_t pi_len = 0; | |
812 | int info_flags = PI_FETCH_TASKINFO; | |
813 | int suspend_count = -1; | |
0947023d | 814 | kern_return_t err; |
c906108c | 815 | |
f90b2b1d JK |
816 | retry: |
817 | err = proc_getprocinfo (proc_server, inf->pid, &info_flags, | |
942fd805 | 818 | (procinfo_t *) &pi, &pi_len, &noise, &noise_len); |
c906108c | 819 | if (err) |
f90b2b1d JK |
820 | { |
821 | inf->task->dead = 1; /* oh well */ | |
822 | return; | |
823 | } | |
824 | ||
825 | if (inf->task->cur_sc < pi->taskinfo.suspend_count && suspend_count == -1) | |
826 | { | |
827 | /* The proc server might have suspended the task while stopping | |
828 | it. This happens when the task is handling a traced signal. | |
829 | Refetch the suspend count. The proc server should be | |
830 | finished stopping the task by now. */ | |
831 | suspend_count = pi->taskinfo.suspend_count; | |
832 | goto retry; | |
833 | } | |
834 | ||
835 | suspend_count = pi->taskinfo.suspend_count; | |
836 | ||
a441dfbc ST |
837 | vm_deallocate (mach_task_self (), (vm_address_t) pi, |
838 | pi_len * sizeof (*(procinfo_t) 0)); | |
f90b2b1d | 839 | if (noise_len > 0) |
a441dfbc | 840 | vm_deallocate (mach_task_self (), (vm_address_t) noise, noise_len); |
f90b2b1d JK |
841 | |
842 | if (inf->task->cur_sc < suspend_count) | |
c906108c | 843 | { |
651ce16a PA |
844 | if (!query (_("Pid %d has an additional task suspend count of %d;" |
845 | " clear it? "), inf->pid, | |
846 | suspend_count - inf->task->cur_sc)) | |
8a3fe4f8 | 847 | error (_("Additional task suspend count left untouched.")); |
c906108c | 848 | |
f90b2b1d | 849 | inf->task->cur_sc = suspend_count; |
c906108c SS |
850 | } |
851 | } | |
852 | ||
942fd805 MK |
853 | /* Turns tracing for INF on or off, depending on ON, unless it already |
854 | is. If INF is running, the resume_sc count of INF's threads will | |
855 | be modified, and the signal thread will briefly be run to change | |
856 | the trace state. */ | |
14a8ad62 ST |
857 | void |
858 | gnu_nat_target::inf_set_traced (struct inf *inf, int on) | |
c906108c | 859 | { |
942fd805 MK |
860 | if (on == inf->traced) |
861 | return; | |
862 | ||
863 | if (inf->task && !inf->task->dead) | |
864 | /* Make it take effect immediately. */ | |
865 | { | |
866 | sigset_t mask = on ? ~(sigset_t) 0 : 0; | |
0947023d | 867 | kern_return_t err = |
c5aa993b | 868 | INF_RESUME_MSGPORT_RPC (inf, msg_set_init_int (msgport, refport, |
942fd805 | 869 | INIT_TRACEMASK, mask)); |
d8734c88 | 870 | |
942fd805 MK |
871 | if (err == EIEIO) |
872 | { | |
873 | if (on) | |
8a3fe4f8 | 874 | warning (_("Can't modify tracing state for pid %d: %s"), |
942fd805 | 875 | inf->pid, "No signal thread"); |
c906108c | 876 | inf->traced = on; |
942fd805 MK |
877 | } |
878 | else if (err) | |
8a3fe4f8 | 879 | warning (_("Can't modify tracing state for pid %d: %s"), |
dc672865 | 880 | inf->pid, safe_strerror (err)); |
942fd805 MK |
881 | else |
882 | inf->traced = on; | |
883 | } | |
884 | else | |
885 | inf->traced = on; | |
c906108c | 886 | } |
942fd805 | 887 | |
c906108c | 888 | \f |
942fd805 MK |
889 | /* Makes all the real suspend count deltas of all the procs in INF |
890 | match the desired values. Careful to always do thread/task suspend | |
891 | counts in the safe order. Returns true if at least one thread is | |
0963b4bd | 892 | thought to be running. */ |
c906108c | 893 | int |
14a8ad62 | 894 | gnu_nat_target::inf_update_suspends (struct inf *inf) |
c906108c SS |
895 | { |
896 | struct proc *task = inf->task; | |
d8734c88 | 897 | |
c906108c SS |
898 | /* We don't have to update INF->threads even though we're iterating over it |
899 | because we'll change a thread only if it already has an existing proc | |
900 | entry. */ | |
c906108c SS |
901 | inf_debug (inf, "updating suspend counts"); |
902 | ||
903 | if (task) | |
904 | { | |
905 | struct proc *thread; | |
906 | int task_running = (task->sc == 0), thread_running = 0; | |
907 | ||
908 | if (task->sc > task->cur_sc) | |
909 | /* The task is becoming _more_ suspended; do before any threads. */ | |
910 | task_running = proc_update_sc (task); | |
911 | ||
912 | if (inf->pending_execs) | |
913 | /* When we're waiting for an exec, things may be happening behind our | |
914 | back, so be conservative. */ | |
915 | thread_running = 1; | |
916 | ||
917 | /* Do all the thread suspend counts. */ | |
918 | for (thread = inf->threads; thread; thread = thread->next) | |
919 | thread_running |= proc_update_sc (thread); | |
920 | ||
921 | if (task->sc != task->cur_sc) | |
922 | /* We didn't do the task first, because we wanted to wait for the | |
923 | threads; do it now. */ | |
924 | task_running = proc_update_sc (task); | |
925 | ||
926 | inf_debug (inf, "%srunning...", | |
927 | (thread_running && task_running) ? "" : "not "); | |
928 | ||
929 | inf->running = thread_running && task_running; | |
930 | ||
931 | /* Once any thread has executed some code, we can't depend on the | |
c5aa993b | 932 | threads list any more. */ |
c906108c SS |
933 | if (inf->running) |
934 | inf->threads_up_to_date = 0; | |
935 | ||
936 | return inf->running; | |
937 | } | |
938 | ||
939 | return 0; | |
940 | } | |
942fd805 | 941 | |
c906108c SS |
942 | \f |
943 | /* Converts a GDB pid to a struct proc. */ | |
944 | struct proc * | |
945 | inf_tid_to_thread (struct inf *inf, int tid) | |
946 | { | |
947 | struct proc *thread = inf->threads; | |
948 | ||
949 | while (thread) | |
950 | if (thread->tid == tid) | |
951 | return thread; | |
952 | else | |
953 | thread = thread->next; | |
954 | return 0; | |
955 | } | |
956 | ||
957 | /* Converts a thread port to a struct proc. */ | |
f04a82ef | 958 | static struct proc * |
c906108c SS |
959 | inf_port_to_thread (struct inf *inf, mach_port_t port) |
960 | { | |
961 | struct proc *thread = inf->threads; | |
d8734c88 | 962 | |
c906108c SS |
963 | while (thread) |
964 | if (thread->port == port) | |
965 | return thread; | |
966 | else | |
967 | thread = thread->next; | |
968 | return 0; | |
969 | } | |
942fd805 | 970 | |
05db5edd ST |
971 | /* See gnu-nat.h. */ |
972 | ||
973 | void | |
974 | inf_threads (struct inf *inf, inf_threads_ftype *f, void *arg) | |
975 | { | |
976 | struct proc *thread; | |
977 | ||
978 | for (thread = inf->threads; thread; thread = thread->next) | |
979 | f (thread, arg); | |
980 | } | |
981 | ||
c906108c SS |
982 | \f |
983 | /* Make INF's list of threads be consistent with reality of TASK. */ | |
984 | void | |
14a8ad62 | 985 | gnu_nat_target::inf_validate_procs (struct inf *inf) |
c906108c | 986 | { |
c906108c | 987 | thread_array_t threads; |
942fd805 | 988 | mach_msg_type_number_t num_threads, i; |
c906108c SS |
989 | struct proc *task = inf->task; |
990 | ||
991 | /* If no threads are currently running, this function will guarantee that | |
992 | things are up to date. The exception is if there are zero threads -- | |
993 | then it is almost certainly in an odd state, and probably some outside | |
994 | agent will create threads. */ | |
995 | inf->threads_up_to_date = inf->threads ? !inf->running : 0; | |
996 | ||
997 | if (task) | |
998 | { | |
0947023d | 999 | kern_return_t err = task_threads (task->port, &threads, &num_threads); |
d8734c88 | 1000 | |
c906108c SS |
1001 | inf_debug (inf, "fetching threads"); |
1002 | if (err) | |
1003 | /* TASK must be dead. */ | |
1004 | { | |
1005 | task->dead = 1; | |
1006 | task = 0; | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | if (!task) | |
1011 | { | |
1012 | num_threads = 0; | |
1013 | inf_debug (inf, "no task"); | |
1014 | } | |
1015 | ||
1016 | { | |
942fd805 MK |
1017 | /* Make things normally linear. */ |
1018 | mach_msg_type_number_t search_start = 0; | |
c906108c SS |
1019 | /* Which thread in PROCS corresponds to each task thread, & the task. */ |
1020 | struct proc *matched[num_threads + 1]; | |
1021 | /* The last thread in INF->threads, so we can add to the end. */ | |
1022 | struct proc *last = 0; | |
0963b4bd | 1023 | /* The current thread we're considering. */ |
c906108c SS |
1024 | struct proc *thread = inf->threads; |
1025 | ||
4deab737 | 1026 | memset (matched, 0, sizeof (matched)); |
c906108c SS |
1027 | |
1028 | while (thread) | |
1029 | { | |
942fd805 | 1030 | mach_msg_type_number_t left; |
c906108c SS |
1031 | |
1032 | for (i = search_start, left = num_threads; left; i++, left--) | |
1033 | { | |
1034 | if (i >= num_threads) | |
c5aa993b | 1035 | i -= num_threads; /* I wrapped around. */ |
c906108c SS |
1036 | if (thread->port == threads[i]) |
1037 | /* We already know about this thread. */ | |
1038 | { | |
1039 | matched[i] = thread; | |
1040 | last = thread; | |
1041 | thread = thread->next; | |
1042 | search_start++; | |
1043 | break; | |
1044 | } | |
1045 | } | |
1046 | ||
c5aa993b | 1047 | if (!left) |
c906108c SS |
1048 | { |
1049 | proc_debug (thread, "died!"); | |
1050 | thread->port = MACH_PORT_NULL; | |
c5aa993b | 1051 | thread = _proc_free (thread); /* THREAD is dead. */ |
c4c50d37 DJ |
1052 | if (last) |
1053 | last->next = thread; | |
1054 | else | |
1055 | inf->threads = thread; | |
c906108c SS |
1056 | } |
1057 | } | |
1058 | ||
1059 | for (i = 0; i < num_threads; i++) | |
942fd805 MK |
1060 | { |
1061 | if (matched[i]) | |
1062 | /* Throw away the duplicate send right. */ | |
1063 | mach_port_deallocate (mach_task_self (), threads[i]); | |
1064 | else | |
1065 | /* THREADS[I] is a thread we don't know about yet! */ | |
1066 | { | |
617fd3b5 PA |
1067 | ptid_t ptid; |
1068 | ||
942fd805 | 1069 | thread = make_proc (inf, threads[i], next_thread_id++); |
c4c50d37 DJ |
1070 | if (last) |
1071 | last->next = thread; | |
1072 | else | |
1073 | inf->threads = thread; | |
942fd805 | 1074 | last = thread; |
a9a758e3 | 1075 | proc_debug (thread, "new thread: %lu", threads[i]); |
617fd3b5 | 1076 | |
fd79271b | 1077 | ptid = ptid_t (inf->pid, thread->tid, 0); |
617fd3b5 PA |
1078 | |
1079 | /* Tell GDB's generic thread code. */ | |
1080 | ||
d7e15655 | 1081 | if (inferior_ptid == ptid_t (inf->pid)) |
617fd3b5 PA |
1082 | /* This is the first time we're hearing about thread |
1083 | ids, after a fork-child. */ | |
14a8ad62 | 1084 | thread_change_ptid (this, inferior_ptid, ptid); |
617fd3b5 PA |
1085 | else if (inf->pending_execs != 0) |
1086 | /* This is a shell thread. */ | |
14a8ad62 | 1087 | add_thread_silent (this, ptid); |
617fd3b5 | 1088 | else |
14a8ad62 | 1089 | add_thread (this, ptid); |
942fd805 MK |
1090 | } |
1091 | } | |
c906108c | 1092 | |
c5aa993b | 1093 | vm_deallocate (mach_task_self (), |
942fd805 | 1094 | (vm_address_t) threads, (num_threads * sizeof (thread_t))); |
c906108c SS |
1095 | } |
1096 | } | |
942fd805 | 1097 | |
c906108c SS |
1098 | \f |
1099 | /* Makes sure that INF's thread list is synced with the actual process. */ | |
39efb398 | 1100 | int |
c906108c SS |
1101 | inf_update_procs (struct inf *inf) |
1102 | { | |
c5aa993b | 1103 | if (!inf->task) |
c906108c | 1104 | return 0; |
c5aa993b | 1105 | if (!inf->threads_up_to_date) |
14a8ad62 | 1106 | gnu_target->inf_validate_procs (inf); |
c906108c SS |
1107 | return !!inf->task; |
1108 | } | |
1109 | ||
1110 | /* Sets the resume_sc of each thread in inf. That of RUN_THREAD is set to 0, | |
1111 | and others are set to their run_sc if RUN_OTHERS is true, and otherwise | |
1112 | their pause_sc. */ | |
39efb398 | 1113 | void |
14a8ad62 ST |
1114 | gnu_nat_target::inf_set_threads_resume_sc (struct inf *inf, |
1115 | struct proc *run_thread, int run_others) | |
c906108c SS |
1116 | { |
1117 | struct proc *thread; | |
d8734c88 | 1118 | |
c906108c SS |
1119 | inf_update_procs (inf); |
1120 | for (thread = inf->threads; thread; thread = thread->next) | |
1121 | if (thread == run_thread) | |
1122 | thread->resume_sc = 0; | |
1123 | else if (run_others) | |
1124 | thread->resume_sc = thread->run_sc; | |
1125 | else | |
1126 | thread->resume_sc = thread->pause_sc; | |
1127 | } | |
942fd805 | 1128 | |
c906108c SS |
1129 | \f |
1130 | /* Cause INF to continue execution immediately; individual threads may still | |
1131 | be suspended (but their suspend counts will be updated). */ | |
39efb398 | 1132 | void |
14a8ad62 | 1133 | gnu_nat_target::inf_resume (struct inf *inf) |
c906108c SS |
1134 | { |
1135 | struct proc *thread; | |
1136 | ||
1137 | inf_update_procs (inf); | |
1138 | ||
1139 | for (thread = inf->threads; thread; thread = thread->next) | |
1140 | thread->sc = thread->resume_sc; | |
1141 | ||
1142 | if (inf->task) | |
1143 | { | |
c5aa993b | 1144 | if (!inf->pending_execs) |
c906108c SS |
1145 | /* Try to make sure our task count is correct -- in the case where |
1146 | we're waiting for an exec though, things are too volatile, so just | |
1147 | assume things will be reasonable (which they usually will be). */ | |
1148 | inf_validate_task_sc (inf); | |
1149 | inf->task->sc = 0; | |
1150 | } | |
1151 | ||
1152 | inf_update_suspends (inf); | |
1153 | } | |
1154 | ||
1155 | /* Cause INF to stop execution immediately; individual threads may still | |
1156 | be running. */ | |
39efb398 | 1157 | void |
14a8ad62 | 1158 | gnu_nat_target::inf_suspend (struct inf *inf) |
c906108c SS |
1159 | { |
1160 | struct proc *thread; | |
1161 | ||
1162 | inf_update_procs (inf); | |
1163 | ||
1164 | for (thread = inf->threads; thread; thread = thread->next) | |
1165 | thread->sc = thread->pause_sc; | |
1166 | ||
1167 | if (inf->task) | |
1168 | inf->task->sc = inf->pause_sc; | |
1169 | ||
1170 | inf_update_suspends (inf); | |
1171 | } | |
942fd805 | 1172 | |
c906108c | 1173 | \f |
942fd805 MK |
1174 | /* INF has one thread PROC that is in single-stepping mode. This |
1175 | function changes it to be PROC, changing any old step_thread to be | |
1176 | a normal one. A PROC of 0 clears any existing value. */ | |
c906108c | 1177 | void |
14a8ad62 | 1178 | gnu_nat_target::inf_set_step_thread (struct inf *inf, struct proc *thread) |
c906108c | 1179 | { |
bf62e5b4 | 1180 | gdb_assert (!thread || proc_is_thread (thread)); |
c906108c SS |
1181 | |
1182 | if (thread) | |
1183 | inf_debug (inf, "setting step thread: %d/%d", inf->pid, thread->tid); | |
1184 | else | |
1185 | inf_debug (inf, "clearing step thread"); | |
1186 | ||
1187 | if (inf->step_thread != thread) | |
1188 | { | |
1189 | if (inf->step_thread && inf->step_thread->port != MACH_PORT_NULL) | |
c5aa993b | 1190 | if (!proc_trace (inf->step_thread, 0)) |
c906108c SS |
1191 | return; |
1192 | if (thread && proc_trace (thread, 1)) | |
1193 | inf->step_thread = thread; | |
1194 | else | |
1195 | inf->step_thread = 0; | |
1196 | } | |
1197 | } | |
942fd805 | 1198 | |
c906108c SS |
1199 | \f |
1200 | /* Set up the thread resume_sc's so that only the signal thread is running | |
1201 | (plus whatever other thread are set to always run). Returns true if we | |
1202 | did so, or false if we can't find a signal thread. */ | |
39efb398 | 1203 | int |
14a8ad62 | 1204 | gnu_nat_target::inf_set_threads_resume_sc_for_signal_thread (struct inf *inf) |
c906108c SS |
1205 | { |
1206 | if (inf->signal_thread) | |
1207 | { | |
1208 | inf_set_threads_resume_sc (inf, inf->signal_thread, 0); | |
1209 | return 1; | |
1210 | } | |
1211 | else | |
1212 | return 0; | |
1213 | } | |
1214 | ||
1215 | static void | |
1216 | inf_update_signal_thread (struct inf *inf) | |
1217 | { | |
1218 | /* XXX for now we assume that if there's a msgport, the 2nd thread is | |
1219 | the signal thread. */ | |
1220 | inf->signal_thread = inf->threads ? inf->threads->next : 0; | |
1221 | } | |
942fd805 | 1222 | |
c906108c SS |
1223 | \f |
1224 | /* Detachs from INF's inferior task, letting it run once again... */ | |
1225 | void | |
14a8ad62 | 1226 | gnu_nat_target::inf_detach (struct inf *inf) |
c906108c SS |
1227 | { |
1228 | struct proc *task = inf->task; | |
1229 | ||
1230 | inf_debug (inf, "detaching..."); | |
1231 | ||
1232 | inf_clear_wait (inf); | |
1233 | inf_set_step_thread (inf, 0); | |
1234 | ||
1235 | if (task) | |
1236 | { | |
1237 | struct proc *thread; | |
1238 | ||
cce74817 JM |
1239 | inf_validate_procinfo (inf); |
1240 | ||
c906108c SS |
1241 | inf_set_traced (inf, 0); |
1242 | if (inf->stopped) | |
cce74817 JM |
1243 | { |
1244 | if (inf->nomsg) | |
1245 | inf_continue (inf); | |
1246 | else | |
a493e3e2 | 1247 | inf_signal (inf, GDB_SIGNAL_0); |
cce74817 | 1248 | } |
c906108c SS |
1249 | |
1250 | proc_restore_exc_port (task); | |
1251 | task->sc = inf->detach_sc; | |
1252 | ||
1253 | for (thread = inf->threads; thread; thread = thread->next) | |
1254 | { | |
1255 | proc_restore_exc_port (thread); | |
1256 | thread->sc = thread->detach_sc; | |
1257 | } | |
1258 | ||
1259 | inf_update_suspends (inf); | |
1260 | } | |
1261 | ||
1262 | inf_cleanup (inf); | |
1263 | } | |
1264 | ||
942fd805 MK |
1265 | /* Attaches INF to the process with process id PID, returning it in a |
1266 | suspended state suitable for debugging. */ | |
c906108c | 1267 | void |
14a8ad62 | 1268 | gnu_nat_target::inf_attach (struct inf *inf, int pid) |
c906108c SS |
1269 | { |
1270 | inf_debug (inf, "attaching: %d", pid); | |
1271 | ||
1272 | if (inf->pid) | |
1273 | inf_detach (inf); | |
1274 | ||
1275 | inf_startup (inf, pid); | |
1276 | } | |
942fd805 | 1277 | |
c906108c | 1278 | \f |
0963b4bd | 1279 | /* Makes sure that we've got our exception ports entrenched in the process. */ |
c5aa993b | 1280 | void |
14a8ad62 | 1281 | gnu_nat_target::inf_steal_exc_ports (struct inf *inf) |
c906108c SS |
1282 | { |
1283 | struct proc *thread; | |
1284 | ||
1285 | inf_debug (inf, "stealing exception ports"); | |
1286 | ||
0963b4bd | 1287 | inf_set_step_thread (inf, 0); /* The step thread is special. */ |
c906108c SS |
1288 | |
1289 | proc_steal_exc_port (inf->task, inf->event_port); | |
1290 | for (thread = inf->threads; thread; thread = thread->next) | |
1291 | proc_steal_exc_port (thread, MACH_PORT_NULL); | |
1292 | } | |
1293 | ||
1294 | /* Makes sure the process has its own exception ports. */ | |
c5aa993b | 1295 | void |
14a8ad62 | 1296 | gnu_nat_target::inf_restore_exc_ports (struct inf *inf) |
c906108c SS |
1297 | { |
1298 | struct proc *thread; | |
1299 | ||
1300 | inf_debug (inf, "restoring exception ports"); | |
1301 | ||
0963b4bd | 1302 | inf_set_step_thread (inf, 0); /* The step thread is special. */ |
c906108c SS |
1303 | |
1304 | proc_restore_exc_port (inf->task); | |
1305 | for (thread = inf->threads; thread; thread = thread->next) | |
1306 | proc_restore_exc_port (thread); | |
1307 | } | |
942fd805 | 1308 | |
c906108c SS |
1309 | \f |
1310 | /* Deliver signal SIG to INF. If INF is stopped, delivering a signal, even | |
1311 | signal 0, will continue it. INF is assumed to be in a paused state, and | |
1312 | the resume_sc's of INF's threads may be affected. */ | |
1313 | void | |
14a8ad62 | 1314 | gnu_nat_target::inf_signal (struct inf *inf, enum gdb_signal sig) |
c906108c | 1315 | { |
0947023d | 1316 | kern_return_t err = 0; |
2ea28649 | 1317 | int host_sig = gdb_signal_to_host (sig); |
c906108c | 1318 | |
2ea28649 | 1319 | #define NAME gdb_signal_to_name (sig) |
c906108c SS |
1320 | |
1321 | if (host_sig >= _NSIG) | |
1322 | /* A mach exception. Exceptions are encoded in the signal space by | |
1323 | putting them after _NSIG; this assumes they're positive (and not | |
1324 | extremely large)! */ | |
1325 | { | |
1326 | struct inf_wait *w = &inf->wait; | |
d8734c88 | 1327 | |
c906108c SS |
1328 | if (w->status.kind == TARGET_WAITKIND_STOPPED |
1329 | && w->status.value.sig == sig | |
1330 | && w->thread && !w->thread->aborted) | |
1331 | /* We're passing through the last exception we received. This is | |
1332 | kind of bogus, because exceptions are per-thread whereas gdb | |
1333 | treats signals as per-process. We just forward the exception to | |
1334 | the correct handler, even it's not for the same thread as TID -- | |
1335 | i.e., we pretend it's global. */ | |
1336 | { | |
1337 | struct exc_state *e = &w->exc; | |
d8734c88 | 1338 | |
c906108c | 1339 | inf_debug (inf, "passing through exception:" |
a9a758e3 | 1340 | " task = %lu, thread = %lu, exc = %d" |
c906108c SS |
1341 | ", code = %d, subcode = %d", |
1342 | w->thread->port, inf->task->port, | |
1343 | e->exception, e->code, e->subcode); | |
1344 | err = | |
1345 | exception_raise_request (e->handler, | |
1346 | e->reply, MACH_MSG_TYPE_MOVE_SEND_ONCE, | |
1347 | w->thread->port, inf->task->port, | |
1348 | e->exception, e->code, e->subcode); | |
1349 | } | |
1350 | else | |
8a3fe4f8 | 1351 | error (_("Can't forward spontaneous exception (%s)."), NAME); |
c906108c SS |
1352 | } |
1353 | else | |
1354 | /* A Unix signal. */ | |
c5aa993b JM |
1355 | if (inf->stopped) |
1356 | /* The process is stopped and expecting a signal. Just send off a | |
1357 | request and let it get handled when we resume everything. */ | |
1358 | { | |
1359 | inf_debug (inf, "sending %s to stopped process", NAME); | |
1360 | err = | |
1361 | INF_MSGPORT_RPC (inf, | |
1362 | msg_sig_post_untraced_request (msgport, | |
1363 | inf->event_port, | |
1364 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
1365 | host_sig, 0, | |
1366 | refport)); | |
1367 | if (!err) | |
1368 | /* Posting an untraced signal automatically continues it. | |
1369 | We clear this here rather than when we get the reply | |
1370 | because we'd rather assume it's not stopped when it | |
1371 | actually is, than the reverse. */ | |
1372 | inf->stopped = 0; | |
1373 | } | |
1374 | else | |
1375 | /* It's not expecting it. We have to let just the signal thread | |
1376 | run, and wait for it to get into a reasonable state before we | |
1377 | can continue the rest of the process. When we finally resume the | |
1378 | process the signal we request will be the very first thing that | |
0963b4bd | 1379 | happens. */ |
c5aa993b | 1380 | { |
942fd805 MK |
1381 | inf_debug (inf, "sending %s to unstopped process" |
1382 | " (so resuming signal thread)", NAME); | |
c5aa993b | 1383 | err = |
942fd805 MK |
1384 | INF_RESUME_MSGPORT_RPC (inf, |
1385 | msg_sig_post_untraced (msgport, host_sig, | |
1386 | 0, refport)); | |
c5aa993b | 1387 | } |
c906108c SS |
1388 | |
1389 | if (err == EIEIO) | |
0963b4bd | 1390 | /* Can't do too much... */ |
8a3fe4f8 | 1391 | warning (_("Can't deliver signal %s: No signal thread."), NAME); |
c906108c | 1392 | else if (err) |
8a3fe4f8 | 1393 | warning (_("Delivering signal %s: %s"), NAME, safe_strerror (err)); |
c906108c SS |
1394 | |
1395 | #undef NAME | |
1396 | } | |
942fd805 | 1397 | |
c906108c | 1398 | \f |
cce74817 JM |
1399 | /* Continue INF without delivering a signal. This is meant to be used |
1400 | when INF does not have a message port. */ | |
1401 | void | |
14a8ad62 | 1402 | gnu_nat_target::inf_continue (struct inf *inf) |
cce74817 JM |
1403 | { |
1404 | process_t proc; | |
0947023d | 1405 | kern_return_t err = proc_pid2proc (proc_server, inf->pid, &proc); |
cce74817 | 1406 | |
c5aa993b | 1407 | if (!err) |
cce74817 JM |
1408 | { |
1409 | inf_debug (inf, "continuing process"); | |
1410 | ||
1411 | err = proc_mark_cont (proc); | |
c5aa993b | 1412 | if (!err) |
cce74817 JM |
1413 | { |
1414 | struct proc *thread; | |
1415 | ||
1416 | for (thread = inf->threads; thread; thread = thread->next) | |
1417 | thread_resume (thread->port); | |
c5aa993b | 1418 | |
cce74817 JM |
1419 | inf->stopped = 0; |
1420 | } | |
1421 | } | |
1422 | ||
1423 | if (err) | |
8a3fe4f8 | 1424 | warning (_("Can't continue process: %s"), safe_strerror (err)); |
cce74817 | 1425 | } |
942fd805 | 1426 | |
cce74817 | 1427 | \f |
c906108c | 1428 | /* The inferior used for all gdb target ops. */ |
c289427b | 1429 | struct inf *gnu_current_inf = 0; |
c906108c SS |
1430 | |
1431 | /* The inferior being waited for by gnu_wait. Since GDB is decidely not | |
1432 | multi-threaded, we don't bother to lock this. */ | |
14a8ad62 | 1433 | static struct inf *waiting_inf; |
c906108c | 1434 | |
0963b4bd | 1435 | /* Wait for something to happen in the inferior, returning what in STATUS. */ |
f6ac5f3d PA |
1436 | |
1437 | ptid_t | |
1438 | gnu_nat_target::wait (ptid_t ptid, struct target_waitstatus *status, | |
1439 | int options) | |
c906108c | 1440 | { |
c5aa993b JM |
1441 | struct msg |
1442 | { | |
1443 | mach_msg_header_t hdr; | |
1444 | mach_msg_type_t type; | |
1445 | int data[8000]; | |
942fd805 | 1446 | } msg; |
0947023d | 1447 | kern_return_t err; |
c906108c | 1448 | struct proc *thread; |
c289427b | 1449 | struct inf *inf = gnu_current_inf; |
c906108c | 1450 | |
bf62e5b4 | 1451 | gdb_assert (inf->task); |
c906108c SS |
1452 | |
1453 | if (!inf->threads && !inf->pending_execs) | |
1454 | /* No threads! Assume that maybe some outside agency is frobbing our | |
1455 | task, and really look for new threads. If we can't find any, just tell | |
1456 | the user to try again later. */ | |
1457 | { | |
1458 | inf_validate_procs (inf); | |
1459 | if (!inf->threads && !inf->task->dead) | |
8a3fe4f8 | 1460 | error (_("There are no threads; try again later.")); |
c906108c SS |
1461 | } |
1462 | ||
1463 | waiting_inf = inf; | |
1464 | ||
a068643d | 1465 | inf_debug (inf, "waiting for: %s", target_pid_to_str (ptid).c_str ()); |
c906108c | 1466 | |
c5aa993b | 1467 | rewait: |
c906108c SS |
1468 | if (proc_wait_pid != inf->pid && !inf->no_wait) |
1469 | /* Always get information on events from the proc server. */ | |
1470 | { | |
1471 | inf_debug (inf, "requesting wait on pid %d", inf->pid); | |
1472 | ||
1473 | if (proc_wait_pid) | |
1474 | /* The proc server is single-threaded, and only allows a single | |
0963b4bd | 1475 | outstanding wait request, so we have to cancel the previous one. */ |
c906108c SS |
1476 | { |
1477 | inf_debug (inf, "cancelling previous wait on pid %d", proc_wait_pid); | |
1478 | interrupt_operation (proc_server, 0); | |
1479 | } | |
1480 | ||
1481 | err = | |
1482 | proc_wait_request (proc_server, inf->event_port, inf->pid, WUNTRACED); | |
1483 | if (err) | |
8a3fe4f8 | 1484 | warning (_("wait request failed: %s"), safe_strerror (err)); |
c906108c SS |
1485 | else |
1486 | { | |
1487 | inf_debug (inf, "waits pending: %d", proc_waits_pending); | |
1488 | proc_wait_pid = inf->pid; | |
942fd805 MK |
1489 | /* Even if proc_waits_pending was > 0 before, we still won't |
1490 | get any other replies, because it was either from a | |
1491 | different INF, or a different process attached to INF -- | |
1492 | and the event port, which is the wait reply port, changes | |
0963b4bd | 1493 | when you switch processes. */ |
c906108c SS |
1494 | proc_waits_pending = 1; |
1495 | } | |
1496 | } | |
1497 | ||
1498 | inf_clear_wait (inf); | |
1499 | ||
1500 | /* What can happen? (1) Dead name notification; (2) Exceptions arrive; | |
1501 | (3) wait reply from the proc server. */ | |
1502 | ||
1503 | inf_debug (inf, "waiting for an event..."); | |
1504 | err = mach_msg (&msg.hdr, MACH_RCV_MSG | MACH_RCV_INTERRUPT, | |
1505 | 0, sizeof (struct msg), inf->event_port, | |
1506 | MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); | |
1507 | ||
1508 | /* Re-suspend the task. */ | |
1509 | inf_suspend (inf); | |
1510 | ||
1511 | if (!inf->task && inf->pending_execs) | |
1512 | /* When doing an exec, it's possible that the old task wasn't reused | |
1513 | (e.g., setuid execs). So if the task seems to have disappeared, | |
1514 | attempt to refetch it, as the pid should still be the same. */ | |
1515 | inf_set_pid (inf, inf->pid); | |
1516 | ||
1517 | if (err == EMACH_RCV_INTERRUPTED) | |
1518 | inf_debug (inf, "interrupted"); | |
1519 | else if (err) | |
8a3fe4f8 | 1520 | error (_("Couldn't wait for an event: %s"), safe_strerror (err)); |
c906108c SS |
1521 | else |
1522 | { | |
c5aa993b JM |
1523 | struct |
1524 | { | |
1525 | mach_msg_header_t hdr; | |
1526 | mach_msg_type_t err_type; | |
1527 | kern_return_t err; | |
1528 | char noise[200]; | |
1529 | } | |
1530 | reply; | |
c906108c SS |
1531 | |
1532 | inf_debug (inf, "event: msgid = %d", msg.hdr.msgh_id); | |
1533 | ||
1534 | /* Handle what we got. */ | |
c5aa993b JM |
1535 | if (!notify_server (&msg.hdr, &reply.hdr) |
1536 | && !exc_server (&msg.hdr, &reply.hdr) | |
1537 | && !process_reply_server (&msg.hdr, &reply.hdr) | |
1538 | && !msg_reply_server (&msg.hdr, &reply.hdr)) | |
c906108c | 1539 | /* Whatever it is, it's something strange. */ |
8a3fe4f8 | 1540 | error (_("Got a strange event, msg id = %d."), msg.hdr.msgh_id); |
c906108c SS |
1541 | |
1542 | if (reply.err) | |
8a3fe4f8 | 1543 | error (_("Handling event, msgid = %d: %s"), |
dc672865 | 1544 | msg.hdr.msgh_id, safe_strerror (reply.err)); |
c906108c SS |
1545 | } |
1546 | ||
1547 | if (inf->pending_execs) | |
1548 | /* We're waiting for the inferior to finish execing. */ | |
1549 | { | |
1550 | struct inf_wait *w = &inf->wait; | |
1551 | enum target_waitkind kind = w->status.kind; | |
1552 | ||
1553 | if (kind == TARGET_WAITKIND_SPURIOUS) | |
1554 | /* Since gdb is actually counting the number of times the inferior | |
1555 | stops, expecting one stop per exec, we only return major events | |
1556 | while execing. */ | |
1557 | { | |
1558 | w->suppress = 1; | |
c82f56d9 | 1559 | inf_debug (inf, "pending_execs, ignoring minor event"); |
c906108c SS |
1560 | } |
1561 | else if (kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 | 1562 | && w->status.value.sig == GDB_SIGNAL_TRAP) |
c906108c SS |
1563 | /* Ah hah! A SIGTRAP from the inferior while starting up probably |
1564 | means we've succesfully completed an exec! */ | |
1565 | { | |
c82f56d9 | 1566 | inf_debug (inf, "one pending exec completed"); |
c906108c SS |
1567 | } |
1568 | else if (kind == TARGET_WAITKIND_STOPPED) | |
1569 | /* It's possible that this signal is because of a crashed process | |
1570 | being handled by the hurd crash server; in this case, the process | |
1571 | will have an extra task suspend, which we need to know about. | |
1572 | Since the code in inf_resume that normally checks for this is | |
1573 | disabled while INF->pending_execs, we do the check here instead. */ | |
1574 | inf_validate_task_sc (inf); | |
1575 | } | |
1576 | ||
1577 | if (inf->wait.suppress) | |
1578 | /* Some totally spurious event happened that we don't consider | |
1579 | worth returning to gdb. Just keep waiting. */ | |
1580 | { | |
1581 | inf_debug (inf, "suppressing return, rewaiting..."); | |
1582 | inf_resume (inf); | |
1583 | goto rewait; | |
1584 | } | |
1585 | ||
1586 | /* Pass back out our results. */ | |
98d346c3 | 1587 | memcpy (status, &inf->wait.status, sizeof (*status)); |
c906108c SS |
1588 | |
1589 | thread = inf->wait.thread; | |
1590 | if (thread) | |
fd79271b | 1591 | ptid = ptid_t (inf->pid, thread->tid, 0); |
d7e15655 | 1592 | else if (ptid == minus_one_ptid) |
617fd3b5 | 1593 | thread = inf_tid_to_thread (inf, -1); |
c906108c | 1594 | else |
e38504b3 | 1595 | thread = inf_tid_to_thread (inf, ptid.lwp ()); |
c906108c SS |
1596 | |
1597 | if (!thread || thread->port == MACH_PORT_NULL) | |
942fd805 MK |
1598 | { |
1599 | /* TID is dead; try and find a new thread. */ | |
1600 | if (inf_update_procs (inf) && inf->threads) | |
fd79271b | 1601 | ptid = ptid_t (inf->pid, inf->threads->tid, 0); /* The first |
0963b4bd MS |
1602 | available |
1603 | thread. */ | |
942fd805 | 1604 | else |
617fd3b5 | 1605 | ptid = inferior_ptid; /* let wait_for_inferior handle exit case */ |
942fd805 | 1606 | } |
c906108c | 1607 | |
617fd3b5 | 1608 | if (thread |
d7e15655 | 1609 | && ptid != minus_one_ptid |
617fd3b5 | 1610 | && status->kind != TARGET_WAITKIND_SPURIOUS |
c906108c | 1611 | && inf->pause_sc == 0 && thread->pause_sc == 0) |
942fd805 MK |
1612 | /* If something actually happened to THREAD, make sure we |
1613 | suspend it. */ | |
c906108c SS |
1614 | { |
1615 | thread->sc = 1; | |
1616 | inf_update_suspends (inf); | |
c5aa993b | 1617 | } |
c906108c | 1618 | |
c29705b7 | 1619 | inf_debug (inf, "returning ptid = %s, %s", |
a068643d | 1620 | target_pid_to_str (ptid).c_str (), |
e9f8e3f1 | 1621 | target_waitstatus_to_string (status).c_str ()); |
c906108c | 1622 | |
617fd3b5 | 1623 | return ptid; |
c906108c | 1624 | } |
942fd805 | 1625 | |
c906108c SS |
1626 | \f |
1627 | /* The rpc handler called by exc_server. */ | |
0947023d | 1628 | kern_return_t |
c906108c SS |
1629 | S_exception_raise_request (mach_port_t port, mach_port_t reply_port, |
1630 | thread_t thread_port, task_t task_port, | |
1631 | int exception, int code, int subcode) | |
1632 | { | |
1633 | struct inf *inf = waiting_inf; | |
1634 | struct proc *thread = inf_port_to_thread (inf, thread_port); | |
1635 | ||
1636 | inf_debug (waiting_inf, | |
a9a758e3 | 1637 | "thread = %lu, task = %lu, exc = %d, code = %d, subcode = %d", |
942fd805 | 1638 | thread_port, task_port, exception, code, subcode); |
c906108c SS |
1639 | |
1640 | if (!thread) | |
1641 | /* We don't know about thread? */ | |
1642 | { | |
1643 | inf_update_procs (inf); | |
1644 | thread = inf_port_to_thread (inf, thread_port); | |
1645 | if (!thread) | |
1646 | /* Give up, the generating thread is gone. */ | |
1647 | return 0; | |
1648 | } | |
1649 | ||
1650 | mach_port_deallocate (mach_task_self (), thread_port); | |
1651 | mach_port_deallocate (mach_task_self (), task_port); | |
1652 | ||
c5aa993b | 1653 | if (!thread->aborted) |
c906108c SS |
1654 | /* THREAD hasn't been aborted since this exception happened (abortion |
1655 | clears any exception state), so it must be real. */ | |
1656 | { | |
1657 | /* Store away the details; this will destroy any previous info. */ | |
1658 | inf->wait.thread = thread; | |
1659 | ||
1660 | inf->wait.status.kind = TARGET_WAITKIND_STOPPED; | |
1661 | ||
1662 | if (exception == EXC_BREAKPOINT) | |
1663 | /* GDB likes to get SIGTRAP for breakpoints. */ | |
1664 | { | |
a493e3e2 | 1665 | inf->wait.status.value.sig = GDB_SIGNAL_TRAP; |
c906108c SS |
1666 | mach_port_deallocate (mach_task_self (), reply_port); |
1667 | } | |
1668 | else | |
1669 | /* Record the exception so that we can forward it later. */ | |
1670 | { | |
1671 | if (thread->exc_port == port) | |
1672 | { | |
a9a758e3 | 1673 | inf_debug (waiting_inf, "Handler is thread exception port <%lu>", |
c906108c SS |
1674 | thread->saved_exc_port); |
1675 | inf->wait.exc.handler = thread->saved_exc_port; | |
1676 | } | |
1677 | else | |
1678 | { | |
a9a758e3 | 1679 | inf_debug (waiting_inf, "Handler is task exception port <%lu>", |
c906108c SS |
1680 | inf->task->saved_exc_port); |
1681 | inf->wait.exc.handler = inf->task->saved_exc_port; | |
bf62e5b4 | 1682 | gdb_assert (inf->task->exc_port == port); |
c906108c SS |
1683 | } |
1684 | if (inf->wait.exc.handler != MACH_PORT_NULL) | |
0963b4bd | 1685 | /* Add a reference to the exception handler. */ |
c906108c SS |
1686 | mach_port_mod_refs (mach_task_self (), |
1687 | inf->wait.exc.handler, MACH_PORT_RIGHT_SEND, | |
1688 | 1); | |
1689 | ||
1690 | inf->wait.exc.exception = exception; | |
1691 | inf->wait.exc.code = code; | |
1692 | inf->wait.exc.subcode = subcode; | |
1693 | inf->wait.exc.reply = reply_port; | |
1694 | ||
0963b4bd MS |
1695 | /* Exceptions are encoded in the signal space by putting |
1696 | them after _NSIG; this assumes they're positive (and not | |
1697 | extremely large)! */ | |
c906108c | 1698 | inf->wait.status.value.sig = |
2ea28649 | 1699 | gdb_signal_from_host (_NSIG + exception); |
c906108c SS |
1700 | } |
1701 | } | |
1702 | else | |
30baf67b | 1703 | /* A suppressed exception, which ignore. */ |
c906108c SS |
1704 | { |
1705 | inf->wait.suppress = 1; | |
1706 | mach_port_deallocate (mach_task_self (), reply_port); | |
1707 | } | |
1708 | ||
1709 | return 0; | |
1710 | } | |
942fd805 | 1711 | |
c906108c SS |
1712 | \f |
1713 | /* Fill in INF's wait field after a task has died without giving us more | |
1714 | detailed information. */ | |
f04a82ef | 1715 | static void |
c906108c SS |
1716 | inf_task_died_status (struct inf *inf) |
1717 | { | |
0963b4bd MS |
1718 | warning (_("Pid %d died with unknown exit status, using SIGKILL."), |
1719 | inf->pid); | |
c906108c | 1720 | inf->wait.status.kind = TARGET_WAITKIND_SIGNALLED; |
a493e3e2 | 1721 | inf->wait.status.value.sig = GDB_SIGNAL_KILL; |
c906108c SS |
1722 | } |
1723 | ||
1724 | /* Notify server routines. The only real one is dead name notification. */ | |
0947023d | 1725 | kern_return_t |
c906108c SS |
1726 | do_mach_notify_dead_name (mach_port_t notify, mach_port_t dead_port) |
1727 | { | |
1728 | struct inf *inf = waiting_inf; | |
1729 | ||
a9a758e3 | 1730 | inf_debug (waiting_inf, "port = %lu", dead_port); |
c906108c SS |
1731 | |
1732 | if (inf->task && inf->task->port == dead_port) | |
1733 | { | |
1734 | proc_debug (inf->task, "is dead"); | |
1735 | inf->task->port = MACH_PORT_NULL; | |
1736 | if (proc_wait_pid == inf->pid) | |
1737 | /* We have a wait outstanding on the process, which will return more | |
1738 | detailed information, so delay until we get that. */ | |
1739 | inf->wait.suppress = 1; | |
1740 | else | |
1741 | /* We never waited for the process (maybe it wasn't a child), so just | |
1742 | pretend it got a SIGKILL. */ | |
1743 | inf_task_died_status (inf); | |
1744 | } | |
1745 | else | |
1746 | { | |
1747 | struct proc *thread = inf_port_to_thread (inf, dead_port); | |
d8734c88 | 1748 | |
c906108c SS |
1749 | if (thread) |
1750 | { | |
1751 | proc_debug (thread, "is dead"); | |
1752 | thread->port = MACH_PORT_NULL; | |
1753 | } | |
f90b2b1d JK |
1754 | |
1755 | if (inf->task->dead) | |
1756 | /* Since the task is dead, its threads are dying with it. */ | |
1757 | inf->wait.suppress = 1; | |
c906108c SS |
1758 | } |
1759 | ||
1760 | mach_port_deallocate (mach_task_self (), dead_port); | |
0963b4bd | 1761 | inf->threads_up_to_date = 0; /* Just in case. */ |
c906108c SS |
1762 | |
1763 | return 0; | |
1764 | } | |
942fd805 | 1765 | |
c906108c | 1766 | \f |
3398af6a | 1767 | #define ILL_RPC(fun, ...) \ |
842c05cd | 1768 | extern kern_return_t fun (__VA_ARGS__); \ |
3398af6a TS |
1769 | kern_return_t fun (__VA_ARGS__) \ |
1770 | { \ | |
1771 | warning (_("illegal rpc: %s"), #fun); \ | |
1772 | return 0; \ | |
1773 | } | |
942fd805 | 1774 | |
3398af6a TS |
1775 | ILL_RPC (do_mach_notify_no_senders, |
1776 | mach_port_t notify, mach_port_mscount_t count) | |
1777 | ILL_RPC (do_mach_notify_port_deleted, | |
1778 | mach_port_t notify, mach_port_t name) | |
1779 | ILL_RPC (do_mach_notify_msg_accepted, | |
1780 | mach_port_t notify, mach_port_t name) | |
1781 | ILL_RPC (do_mach_notify_port_destroyed, | |
1782 | mach_port_t notify, mach_port_t name) | |
1783 | ILL_RPC (do_mach_notify_send_once, | |
1784 | mach_port_t notify) | |
c906108c SS |
1785 | \f |
1786 | /* Process_reply server routines. We only use process_wait_reply. */ | |
1787 | ||
0947023d TS |
1788 | kern_return_t |
1789 | S_proc_wait_reply (mach_port_t reply, kern_return_t err, | |
c906108c SS |
1790 | int status, int sigcode, rusage_t rusage, pid_t pid) |
1791 | { | |
1792 | struct inf *inf = waiting_inf; | |
1793 | ||
1794 | inf_debug (inf, "err = %s, pid = %d, status = 0x%x, sigcode = %d", | |
dc672865 | 1795 | err ? safe_strerror (err) : "0", pid, status, sigcode); |
c906108c SS |
1796 | |
1797 | if (err && proc_wait_pid && (!inf->task || !inf->task->port)) | |
1798 | /* Ack. The task has died, but the task-died notification code didn't | |
1799 | tell anyone because it thought a more detailed reply from the | |
1800 | procserver was forthcoming. However, we now learn that won't | |
1801 | happen... So we have to act like the task just died, and this time, | |
1802 | tell the world. */ | |
1803 | inf_task_died_status (inf); | |
1804 | ||
1805 | if (--proc_waits_pending == 0) | |
1806 | /* PROC_WAIT_PID represents the most recent wait. We will always get | |
1807 | replies in order because the proc server is single threaded. */ | |
1808 | proc_wait_pid = 0; | |
1809 | ||
1810 | inf_debug (inf, "waits pending now: %d", proc_waits_pending); | |
1811 | ||
1812 | if (err) | |
1813 | { | |
1814 | if (err != EINTR) | |
1815 | { | |
0963b4bd MS |
1816 | warning (_("Can't wait for pid %d: %s"), |
1817 | inf->pid, safe_strerror (err)); | |
c906108c SS |
1818 | inf->no_wait = 1; |
1819 | ||
1820 | /* Since we can't see the inferior's signals, don't trap them. */ | |
14a8ad62 | 1821 | gnu_target->inf_set_traced (inf, 0); |
c906108c SS |
1822 | } |
1823 | } | |
1824 | else if (pid == inf->pid) | |
1825 | { | |
1826 | store_waitstatus (&inf->wait.status, status); | |
1827 | if (inf->wait.status.kind == TARGET_WAITKIND_STOPPED) | |
1828 | /* The process has sent us a signal, and stopped itself in a sane | |
1829 | state pending our actions. */ | |
1830 | { | |
1831 | inf_debug (inf, "process has stopped itself"); | |
1832 | inf->stopped = 1; | |
1833 | } | |
1834 | } | |
1835 | else | |
1836 | inf->wait.suppress = 1; /* Something odd happened. Ignore. */ | |
1837 | ||
1838 | return 0; | |
1839 | } | |
1840 | ||
3398af6a TS |
1841 | ILL_RPC (S_proc_setmsgport_reply, |
1842 | mach_port_t reply_port, kern_return_t return_code, | |
1843 | mach_port_t oldmsgport) | |
1844 | ILL_RPC (S_proc_getmsgport_reply, | |
1845 | mach_port_t reply_port, kern_return_t return_code, | |
8071c5ce | 1846 | mach_port_t msgports, mach_msg_type_name_t msgportsPoly) |
3398af6a TS |
1847 | ILL_RPC (S_proc_pid2task_reply, |
1848 | mach_port_t reply_port, kern_return_t return_code, mach_port_t task) | |
1849 | ILL_RPC (S_proc_task2pid_reply, | |
1850 | mach_port_t reply_port, kern_return_t return_code, pid_t pid) | |
1851 | ILL_RPC (S_proc_task2proc_reply, | |
8071c5ce DM |
1852 | mach_port_t reply_port, kern_return_t return_code, |
1853 | mach_port_t proc, mach_msg_type_name_t procPoly) | |
3398af6a TS |
1854 | ILL_RPC (S_proc_proc2task_reply, |
1855 | mach_port_t reply_port, kern_return_t return_code, mach_port_t task) | |
1856 | ILL_RPC (S_proc_pid2proc_reply, | |
8071c5ce DM |
1857 | mach_port_t reply_port, kern_return_t return_code, |
1858 | mach_port_t proc, mach_msg_type_name_t procPoly) | |
3398af6a TS |
1859 | ILL_RPC (S_proc_getprocinfo_reply, |
1860 | mach_port_t reply_port, kern_return_t return_code, | |
1861 | int flags, procinfo_t procinfo, mach_msg_type_number_t procinfoCnt, | |
1862 | data_t threadwaits, mach_msg_type_number_t threadwaitsCnt) | |
1863 | ILL_RPC (S_proc_getprocargs_reply, | |
1864 | mach_port_t reply_port, kern_return_t return_code, | |
1865 | data_t procargs, mach_msg_type_number_t procargsCnt) | |
1866 | ILL_RPC (S_proc_getprocenv_reply, | |
1867 | mach_port_t reply_port, kern_return_t return_code, | |
1868 | data_t procenv, mach_msg_type_number_t procenvCnt) | |
1869 | ILL_RPC (S_proc_getloginid_reply, | |
1870 | mach_port_t reply_port, kern_return_t return_code, pid_t login_id) | |
1871 | ILL_RPC (S_proc_getloginpids_reply, | |
1872 | mach_port_t reply_port, kern_return_t return_code, | |
1873 | pidarray_t pids, mach_msg_type_number_t pidsCnt) | |
1874 | ILL_RPC (S_proc_getlogin_reply, | |
1875 | mach_port_t reply_port, kern_return_t return_code, string_t logname) | |
1876 | ILL_RPC (S_proc_getsid_reply, | |
1877 | mach_port_t reply_port, kern_return_t return_code, pid_t sid) | |
1878 | ILL_RPC (S_proc_getsessionpgids_reply, | |
1879 | mach_port_t reply_port, kern_return_t return_code, | |
1880 | pidarray_t pgidset, mach_msg_type_number_t pgidsetCnt) | |
1881 | ILL_RPC (S_proc_getsessionpids_reply, | |
1882 | mach_port_t reply_port, kern_return_t return_code, | |
1883 | pidarray_t pidset, mach_msg_type_number_t pidsetCnt) | |
1884 | ILL_RPC (S_proc_getsidport_reply, | |
1885 | mach_port_t reply_port, kern_return_t return_code, | |
1886 | mach_port_t sessport) | |
1887 | ILL_RPC (S_proc_getpgrp_reply, | |
1888 | mach_port_t reply_port, kern_return_t return_code, pid_t pgrp) | |
1889 | ILL_RPC (S_proc_getpgrppids_reply, | |
1890 | mach_port_t reply_port, kern_return_t return_code, | |
1891 | pidarray_t pidset, mach_msg_type_number_t pidsetCnt) | |
1892 | ILL_RPC (S_proc_get_tty_reply, | |
1893 | mach_port_t reply_port, kern_return_t return_code, mach_port_t tty) | |
1894 | ILL_RPC (S_proc_getnports_reply, | |
1895 | mach_port_t reply_port, kern_return_t return_code, | |
1896 | mach_msg_type_number_t nports) | |
1897 | ILL_RPC (S_proc_is_important_reply, | |
1898 | mach_port_t reply_port, kern_return_t return_code, | |
1899 | boolean_t essential) | |
1900 | ILL_RPC (S_proc_get_code_reply, | |
1901 | mach_port_t reply_port, kern_return_t return_code, | |
1902 | vm_address_t start_code, vm_address_t end_code) | |
c906108c SS |
1903 | \f |
1904 | /* Msg_reply server routines. We only use msg_sig_post_untraced_reply. */ | |
1905 | ||
0947023d TS |
1906 | kern_return_t |
1907 | S_msg_sig_post_untraced_reply (mach_port_t reply, kern_return_t err) | |
c906108c SS |
1908 | { |
1909 | struct inf *inf = waiting_inf; | |
1910 | ||
1911 | if (err == EBUSY) | |
1912 | /* EBUSY is what we get when the crash server has grabbed control of the | |
1913 | process and doesn't like what signal we tried to send it. Just act | |
1914 | like the process stopped (using a signal of 0 should mean that the | |
1915 | *next* time the user continues, it will pass signal 0, which the crash | |
1916 | server should like). */ | |
1917 | { | |
1918 | inf->wait.status.kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 1919 | inf->wait.status.value.sig = GDB_SIGNAL_0; |
c906108c SS |
1920 | } |
1921 | else if (err) | |
8a3fe4f8 | 1922 | warning (_("Signal delivery failed: %s"), safe_strerror (err)); |
c906108c SS |
1923 | |
1924 | if (err) | |
1925 | /* We only get this reply when we've posted a signal to a process which we | |
1926 | thought was stopped, and which we expected to continue after the signal. | |
1927 | Given that the signal has failed for some reason, it's reasonable to | |
1928 | assume it's still stopped. */ | |
1929 | inf->stopped = 1; | |
1930 | else | |
1931 | inf->wait.suppress = 1; | |
1932 | ||
1933 | return 0; | |
1934 | } | |
1935 | ||
3398af6a | 1936 | ILL_RPC (S_msg_sig_post_reply, |
0947023d | 1937 | mach_port_t reply, kern_return_t err) |
c906108c SS |
1938 | \f |
1939 | /* Returns the number of messages queued for the receive right PORT. */ | |
1940 | static mach_port_msgcount_t | |
1941 | port_msgs_queued (mach_port_t port) | |
1942 | { | |
1943 | struct mach_port_status status; | |
0947023d | 1944 | kern_return_t err = |
d8734c88 | 1945 | mach_port_get_receive_status (mach_task_self (), port, &status); |
c906108c SS |
1946 | |
1947 | if (err) | |
1948 | return 0; | |
1949 | else | |
1950 | return status.mps_msgcount; | |
1951 | } | |
942fd805 | 1952 | |
c906108c SS |
1953 | \f |
1954 | /* Resume execution of the inferior process. | |
1955 | ||
1956 | If STEP is nonzero, single-step it. | |
1957 | If SIGNAL is nonzero, give it that signal. | |
1958 | ||
1959 | TID STEP: | |
1960 | -1 true Single step the current thread allowing other threads to run. | |
1961 | -1 false Continue the current thread allowing other threads to run. | |
1962 | X true Single step the given thread, don't allow any others to run. | |
1963 | X false Continue the given thread, do not allow any others to run. | |
1964 | (Where X, of course, is anything except -1) | |
1965 | ||
1966 | Note that a resume may not `take' if there are pending exceptions/&c | |
1967 | still unprocessed from the last resume we did (any given resume may result | |
0963b4bd MS |
1968 | in multiple events returned by wait). */ |
1969 | ||
f6ac5f3d PA |
1970 | void |
1971 | gnu_nat_target::resume (ptid_t ptid, int step, enum gdb_signal sig) | |
c906108c SS |
1972 | { |
1973 | struct proc *step_thread = 0; | |
617fd3b5 | 1974 | int resume_all; |
c289427b | 1975 | struct inf *inf = gnu_current_inf; |
c906108c | 1976 | |
617fd3b5 | 1977 | inf_debug (inf, "ptid = %s, step = %d, sig = %d", |
a068643d | 1978 | target_pid_to_str (ptid).c_str (), step, sig); |
c906108c | 1979 | |
cce74817 | 1980 | inf_validate_procinfo (inf); |
c5aa993b | 1981 | |
a493e3e2 | 1982 | if (sig != GDB_SIGNAL_0 || inf->stopped) |
cce74817 | 1983 | { |
a493e3e2 | 1984 | if (sig == GDB_SIGNAL_0 && inf->nomsg) |
cce74817 JM |
1985 | inf_continue (inf); |
1986 | else | |
1987 | inf_signal (inf, sig); | |
1988 | } | |
c906108c SS |
1989 | else if (inf->wait.exc.reply != MACH_PORT_NULL) |
1990 | /* We received an exception to which we have chosen not to forward, so | |
1991 | abort the faulting thread, which will perhaps retake it. */ | |
1992 | { | |
1993 | proc_abort (inf->wait.thread, 1); | |
8a3fe4f8 | 1994 | warning (_("Aborting %s with unforwarded exception %s."), |
c906108c | 1995 | proc_string (inf->wait.thread), |
2ea28649 | 1996 | gdb_signal_to_name (inf->wait.status.value.sig)); |
c906108c SS |
1997 | } |
1998 | ||
1999 | if (port_msgs_queued (inf->event_port)) | |
2000 | /* If there are still messages in our event queue, don't bother resuming | |
0963b4bd | 2001 | the process, as we're just going to stop it right away anyway. */ |
c906108c SS |
2002 | return; |
2003 | ||
2004 | inf_update_procs (inf); | |
2005 | ||
617fd3b5 | 2006 | /* A specific PTID means `step only this process id'. */ |
d7e15655 | 2007 | resume_all = ptid == minus_one_ptid; |
617fd3b5 PA |
2008 | |
2009 | if (resume_all) | |
c906108c SS |
2010 | /* Allow all threads to run, except perhaps single-stepping one. */ |
2011 | { | |
dfd4cc63 | 2012 | inf_debug (inf, "running all threads; tid = %d", |
e99b03dc | 2013 | inferior_ptid.pid ()); |
0963b4bd | 2014 | ptid = inferior_ptid; /* What to step. */ |
c906108c SS |
2015 | inf_set_threads_resume_sc (inf, 0, 1); |
2016 | } | |
2017 | else | |
2018 | /* Just allow a single thread to run. */ | |
2019 | { | |
e38504b3 | 2020 | struct proc *thread = inf_tid_to_thread (inf, ptid.lwp ()); |
d8734c88 | 2021 | |
c5aa993b | 2022 | if (!thread) |
617fd3b5 | 2023 | error (_("Can't run single thread id %s: no such thread!"), |
a068643d TT |
2024 | target_pid_to_str (ptid).c_str ()); |
2025 | inf_debug (inf, "running one thread: %s", | |
2026 | target_pid_to_str (ptid).c_str ()); | |
c906108c SS |
2027 | inf_set_threads_resume_sc (inf, thread, 0); |
2028 | } | |
2029 | ||
2030 | if (step) | |
2031 | { | |
e38504b3 | 2032 | step_thread = inf_tid_to_thread (inf, ptid.lwp ()); |
c5aa993b | 2033 | if (!step_thread) |
617fd3b5 | 2034 | warning (_("Can't step thread id %s: no such thread."), |
a068643d | 2035 | target_pid_to_str (ptid).c_str ()); |
c906108c | 2036 | else |
a068643d TT |
2037 | inf_debug (inf, "stepping thread: %s", |
2038 | target_pid_to_str (ptid).c_str ()); | |
c906108c SS |
2039 | } |
2040 | if (step_thread != inf->step_thread) | |
2041 | inf_set_step_thread (inf, step_thread); | |
2042 | ||
2043 | inf_debug (inf, "here we go..."); | |
2044 | inf_resume (inf); | |
2045 | } | |
942fd805 | 2046 | |
c906108c | 2047 | \f |
f6ac5f3d PA |
2048 | void |
2049 | gnu_nat_target::kill () | |
c906108c | 2050 | { |
c289427b | 2051 | struct proc *task = gnu_current_inf->task; |
d8734c88 | 2052 | |
c906108c SS |
2053 | if (task) |
2054 | { | |
2055 | proc_debug (task, "terminating..."); | |
2056 | task_terminate (task->port); | |
c289427b | 2057 | inf_set_pid (gnu_current_inf, -1); |
c906108c | 2058 | } |
bc1e6c81 | 2059 | target_mourn_inferior (inferior_ptid); |
c906108c SS |
2060 | } |
2061 | ||
2062 | /* Clean up after the inferior dies. */ | |
f6ac5f3d PA |
2063 | void |
2064 | gnu_nat_target::mourn_inferior () | |
c906108c | 2065 | { |
c289427b PA |
2066 | inf_debug (gnu_current_inf, "rip"); |
2067 | inf_detach (gnu_current_inf); | |
f6ac5f3d | 2068 | inf_child_target::mourn_inferior (); |
c906108c | 2069 | } |
942fd805 | 2070 | |
c906108c SS |
2071 | \f |
2072 | /* Fork an inferior process, and start debugging it. */ | |
2073 | ||
2074 | /* Set INFERIOR_PID to the first thread available in the child, if any. */ | |
2075 | static int | |
fba45db2 | 2076 | inf_pick_first_thread (void) |
c906108c | 2077 | { |
c289427b | 2078 | if (gnu_current_inf->task && gnu_current_inf->threads) |
c906108c | 2079 | /* The first thread. */ |
c289427b | 2080 | return gnu_current_inf->threads->tid; |
c906108c SS |
2081 | else |
2082 | /* What may be the next thread. */ | |
2083 | return next_thread_id; | |
2084 | } | |
2085 | ||
2086 | static struct inf * | |
fba45db2 | 2087 | cur_inf (void) |
c906108c | 2088 | { |
c289427b PA |
2089 | if (!gnu_current_inf) |
2090 | gnu_current_inf = make_inf (); | |
2091 | return gnu_current_inf; | |
c906108c SS |
2092 | } |
2093 | ||
a9617a42 TS |
2094 | static void |
2095 | gnu_ptrace_me (void) | |
2096 | { | |
2097 | /* We're in the child; make this process stop as soon as it execs. */ | |
2098 | struct inf *inf = cur_inf (); | |
2099 | inf_debug (inf, "tracing self"); | |
2100 | if (ptrace (PTRACE_TRACEME) != 0) | |
0db8980c | 2101 | trace_start_error_with_name ("ptrace"); |
a9617a42 TS |
2102 | } |
2103 | ||
f6ac5f3d PA |
2104 | void |
2105 | gnu_nat_target::create_inferior (const char *exec_file, | |
2106 | const std::string &allargs, | |
2107 | char **env, | |
2108 | int from_tty) | |
c906108c SS |
2109 | { |
2110 | struct inf *inf = cur_inf (); | |
b4d1e8c7 | 2111 | int pid; |
c906108c | 2112 | |
b4d1e8c7 | 2113 | inf_debug (inf, "creating inferior"); |
c906108c | 2114 | |
078f2fc9 ST |
2115 | if (!target_is_pushed (this)) |
2116 | push_target (this); | |
2117 | ||
a9617a42 | 2118 | pid = fork_inferior (exec_file, allargs, env, gnu_ptrace_me, |
e69860f1 | 2119 | NULL, NULL, NULL, NULL); |
c906108c | 2120 | |
2090129c SDJ |
2121 | /* We have something that executes now. We'll be running through |
2122 | the shell at this point (if startup-with-shell is true), but the | |
2123 | pid shouldn't change. */ | |
975f8708 PA |
2124 | thread_info *thr = add_thread_silent (this, ptid_t (pid)); |
2125 | switch_to_thread (thr); | |
2090129c | 2126 | |
b4d1e8c7 PA |
2127 | /* Attach to the now stopped child, which is actually a shell... */ |
2128 | inf_debug (inf, "attaching to child: %d", pid); | |
c906108c | 2129 | |
b4d1e8c7 | 2130 | inf_attach (inf, pid); |
617fd3b5 | 2131 | |
c82f56d9 | 2132 | inf->pending_execs = 1; |
b4d1e8c7 PA |
2133 | inf->nomsg = 1; |
2134 | inf->traced = 1; | |
c906108c | 2135 | |
b4d1e8c7 | 2136 | /* Now let the child run again, knowing that it will stop |
0963b4bd | 2137 | immediately because of the ptrace. */ |
b4d1e8c7 PA |
2138 | inf_resume (inf); |
2139 | ||
2140 | /* We now have thread info. */ | |
14a8ad62 | 2141 | thread_change_ptid (this, inferior_ptid, |
fd79271b | 2142 | ptid_t (inf->pid, inf_pick_first_thread (), 0)); |
c906108c | 2143 | |
2090129c SDJ |
2144 | gdb_startup_inferior (pid, START_INFERIOR_TRAPS_EXPECTED); |
2145 | ||
c82f56d9 | 2146 | inf->pending_execs = 0; |
c752a4cc TS |
2147 | /* Get rid of the old shell threads. */ |
2148 | prune_threads (); | |
c906108c | 2149 | |
cce74817 | 2150 | inf_validate_procinfo (inf); |
c906108c SS |
2151 | inf_update_signal_thread (inf); |
2152 | inf_set_traced (inf, inf->want_signals); | |
2153 | ||
2154 | /* Execing the process will have trashed our exception ports; steal them | |
2155 | back (or make sure they're restored if the user wants that). */ | |
2156 | if (inf->want_exceptions) | |
2157 | inf_steal_exc_ports (inf); | |
2158 | else | |
2159 | inf_restore_exc_ports (inf); | |
c906108c SS |
2160 | } |
2161 | ||
c906108c | 2162 | \f |
c906108c SS |
2163 | /* Attach to process PID, then initialize for debugging it |
2164 | and wait for the trace-trap that results from attaching. */ | |
f6ac5f3d PA |
2165 | void |
2166 | gnu_nat_target::attach (const char *args, int from_tty) | |
c906108c SS |
2167 | { |
2168 | int pid; | |
c906108c | 2169 | struct inf *inf = cur_inf (); |
181e7f93 | 2170 | struct inferior *inferior; |
c906108c | 2171 | |
74164c56 | 2172 | pid = parse_pid_to_attach (args); |
c906108c | 2173 | |
74164c56 | 2174 | if (pid == getpid ()) /* Trying to masturbate? */ |
8a3fe4f8 | 2175 | error (_("I refuse to debug myself!")); |
c906108c SS |
2176 | |
2177 | if (from_tty) | |
2178 | { | |
d9fa87f4 | 2179 | const char *exec_file = get_exec_file (0); |
c906108c SS |
2180 | |
2181 | if (exec_file) | |
2182 | printf_unfiltered ("Attaching to program `%s', pid %d\n", | |
2183 | exec_file, pid); | |
2184 | else | |
2185 | printf_unfiltered ("Attaching to pid %d\n", pid); | |
c906108c SS |
2186 | } |
2187 | ||
2188 | inf_debug (inf, "attaching to pid: %d", pid); | |
2189 | ||
2190 | inf_attach (inf, pid); | |
a9ab7422 | 2191 | |
f6ac5f3d | 2192 | push_target (this); |
a9ab7422 | 2193 | |
6c95b8df PA |
2194 | inferior = current_inferior (); |
2195 | inferior_appeared (inferior, pid); | |
181e7f93 | 2196 | inferior->attach_flag = 1; |
7f9f62ba | 2197 | |
c906108c SS |
2198 | inf_update_procs (inf); |
2199 | ||
975f8708 PA |
2200 | thread_info *thr |
2201 | = find_thread_ptid (this, ptid_t (pid, inf_pick_first_thread ())); | |
2202 | switch_to_thread (thr); | |
c906108c | 2203 | |
b83266a0 SS |
2204 | /* We have to initialize the terminal settings now, since the code |
2205 | below might try to restore them. */ | |
223ffa71 | 2206 | target_terminal::init (); |
c5aa993b | 2207 | |
c906108c SS |
2208 | /* If the process was stopped before we attached, make it continue the next |
2209 | time the user does a continue. */ | |
cce74817 JM |
2210 | inf_validate_procinfo (inf); |
2211 | ||
2212 | inf_update_signal_thread (inf); | |
2213 | inf_set_traced (inf, inf->want_signals); | |
c906108c | 2214 | |
0963b4bd MS |
2215 | #if 0 /* Do we need this? */ |
2216 | renumber_threads (0); /* Give our threads reasonable names. */ | |
c906108c SS |
2217 | #endif |
2218 | } | |
942fd805 | 2219 | |
c906108c SS |
2220 | \f |
2221 | /* Take a program previously attached to and detaches it. | |
2222 | The program resumes execution and will no longer stop | |
2223 | on signals, etc. We'd better not have left any breakpoints | |
2224 | in the program or it'll die when it hits one. For this | |
2225 | to work, it may be necessary for the process to have been | |
2226 | previously attached. It *might* work if the program was | |
2227 | started via fork. */ | |
f6ac5f3d PA |
2228 | void |
2229 | gnu_nat_target::detach (inferior *inf, int from_tty) | |
c906108c SS |
2230 | { |
2231 | if (from_tty) | |
2232 | { | |
d9fa87f4 | 2233 | const char *exec_file = get_exec_file (0); |
d8734c88 | 2234 | |
c906108c SS |
2235 | if (exec_file) |
2236 | printf_unfiltered ("Detaching from program `%s' pid %d\n", | |
c289427b | 2237 | exec_file, gnu_current_inf->pid); |
c906108c | 2238 | else |
c289427b | 2239 | printf_unfiltered ("Detaching from pid %d\n", gnu_current_inf->pid); |
c906108c | 2240 | } |
c5aa993b | 2241 | |
c289427b | 2242 | inf_detach (gnu_current_inf); |
c906108c | 2243 | |
975f8708 PA |
2244 | switch_to_no_thread (); |
2245 | detach_inferior (inf); | |
c906108c | 2246 | |
2d0a338c | 2247 | maybe_unpush_target (); |
c906108c | 2248 | } |
942fd805 | 2249 | \f |
c906108c | 2250 | |
f6ac5f3d PA |
2251 | void |
2252 | gnu_nat_target::stop (ptid_t ptid) | |
c906108c | 2253 | { |
f6ac5f3d | 2254 | error (_("stop target function not implemented")); |
c906108c SS |
2255 | } |
2256 | ||
57810aa7 | 2257 | bool |
f6ac5f3d | 2258 | gnu_nat_target::thread_alive (ptid_t ptid) |
c906108c | 2259 | { |
c289427b PA |
2260 | inf_update_procs (gnu_current_inf); |
2261 | return !!inf_tid_to_thread (gnu_current_inf, | |
e38504b3 | 2262 | ptid.lwp ()); |
c906108c | 2263 | } |
942fd805 | 2264 | |
c906108c | 2265 | \f |
942fd805 MK |
2266 | /* Read inferior task's LEN bytes from ADDR and copy it to MYADDR in |
2267 | gdb's address space. Return 0 on failure; number of bytes read | |
2268 | otherwise. */ | |
9b3f3ee6 TS |
2269 | static int |
2270 | gnu_read_inferior (task_t task, CORE_ADDR addr, gdb_byte *myaddr, int length) | |
c906108c | 2271 | { |
0947023d | 2272 | kern_return_t err; |
c906108c SS |
2273 | vm_address_t low_address = (vm_address_t) trunc_page (addr); |
2274 | vm_size_t aligned_length = | |
c5aa993b JM |
2275 | (vm_size_t) round_page (addr + length) - low_address; |
2276 | pointer_t copied; | |
25c0bd04 | 2277 | mach_msg_type_number_t copy_count; |
c906108c | 2278 | |
0963b4bd | 2279 | /* Get memory from inferior with page aligned addresses. */ |
c906108c SS |
2280 | err = vm_read (task, low_address, aligned_length, &copied, ©_count); |
2281 | if (err) | |
2282 | return 0; | |
2283 | ||
0963b4bd MS |
2284 | err = hurd_safe_copyin (myaddr, (void *) (addr - low_address + copied), |
2285 | length); | |
c906108c SS |
2286 | if (err) |
2287 | { | |
8a3fe4f8 | 2288 | warning (_("Read from inferior faulted: %s"), safe_strerror (err)); |
c906108c SS |
2289 | length = 0; |
2290 | } | |
2291 | ||
2292 | err = vm_deallocate (mach_task_self (), copied, copy_count); | |
2293 | if (err) | |
0963b4bd MS |
2294 | warning (_("gnu_read_inferior vm_deallocate failed: %s"), |
2295 | safe_strerror (err)); | |
c906108c SS |
2296 | |
2297 | return length; | |
2298 | } | |
2299 | ||
2300 | #define CHK_GOTO_OUT(str,ret) \ | |
2301 | do if (ret != KERN_SUCCESS) { errstr = #str; goto out; } while(0) | |
2302 | ||
c5aa993b JM |
2303 | struct vm_region_list |
2304 | { | |
c906108c | 2305 | struct vm_region_list *next; |
c5aa993b JM |
2306 | vm_prot_t protection; |
2307 | vm_address_t start; | |
2308 | vm_size_t length; | |
c906108c SS |
2309 | }; |
2310 | ||
c5aa993b | 2311 | struct obstack region_obstack; |
c906108c | 2312 | |
942fd805 MK |
2313 | /* Write gdb's LEN bytes from MYADDR and copy it to ADDR in inferior |
2314 | task's address space. */ | |
9b3f3ee6 TS |
2315 | static int |
2316 | gnu_write_inferior (task_t task, CORE_ADDR addr, | |
2317 | const gdb_byte *myaddr, int length) | |
c906108c | 2318 | { |
0947023d | 2319 | kern_return_t err; |
c5aa993b JM |
2320 | vm_address_t low_address = (vm_address_t) trunc_page (addr); |
2321 | vm_size_t aligned_length = | |
2322 | (vm_size_t) round_page (addr + length) - low_address; | |
2323 | pointer_t copied; | |
25c0bd04 | 2324 | mach_msg_type_number_t copy_count; |
c5aa993b | 2325 | int deallocate = 0; |
c906108c | 2326 | |
924514e1 | 2327 | const char *errstr = "Bug in gnu_write_inferior"; |
c906108c SS |
2328 | |
2329 | struct vm_region_list *region_element; | |
be903358 | 2330 | struct vm_region_list *region_head = NULL; |
c906108c | 2331 | |
0963b4bd | 2332 | /* Get memory from inferior with page aligned addresses. */ |
c906108c SS |
2333 | err = vm_read (task, |
2334 | low_address, | |
2335 | aligned_length, | |
2336 | &copied, | |
2337 | ©_count); | |
2338 | CHK_GOTO_OUT ("gnu_write_inferior vm_read failed", err); | |
2339 | ||
2340 | deallocate++; | |
2341 | ||
96ffcb62 | 2342 | err = hurd_safe_copyout ((void *) (addr - low_address + copied), |
942fd805 | 2343 | myaddr, length); |
c906108c SS |
2344 | CHK_GOTO_OUT ("Write to inferior faulted", err); |
2345 | ||
2346 | obstack_init (®ion_obstack); | |
2347 | ||
2348 | /* Do writes atomically. | |
942fd805 | 2349 | First check for holes and unwritable memory. */ |
c906108c | 2350 | { |
c5aa993b JM |
2351 | vm_size_t remaining_length = aligned_length; |
2352 | vm_address_t region_address = low_address; | |
c906108c SS |
2353 | |
2354 | struct vm_region_list *scan; | |
2355 | ||
c5aa993b | 2356 | while (region_address < low_address + aligned_length) |
c906108c SS |
2357 | { |
2358 | vm_prot_t protection; | |
2359 | vm_prot_t max_protection; | |
2360 | vm_inherit_t inheritance; | |
2361 | boolean_t shared; | |
2362 | mach_port_t object_name; | |
2363 | vm_offset_t offset; | |
c5aa993b JM |
2364 | vm_size_t region_length = remaining_length; |
2365 | vm_address_t old_address = region_address; | |
2366 | ||
c906108c SS |
2367 | err = vm_region (task, |
2368 | ®ion_address, | |
2369 | ®ion_length, | |
2370 | &protection, | |
2371 | &max_protection, | |
2372 | &inheritance, | |
2373 | &shared, | |
2374 | &object_name, | |
2375 | &offset); | |
2376 | CHK_GOTO_OUT ("vm_region failed", err); | |
2377 | ||
0963b4bd | 2378 | /* Check for holes in memory. */ |
c906108c SS |
2379 | if (old_address != region_address) |
2380 | { | |
a9a758e3 | 2381 | warning (_("No memory at 0x%lx. Nothing written"), |
c906108c SS |
2382 | old_address); |
2383 | err = KERN_SUCCESS; | |
2384 | length = 0; | |
2385 | goto out; | |
2386 | } | |
2387 | ||
2388 | if (!(max_protection & VM_PROT_WRITE)) | |
2389 | { | |
a9a758e3 | 2390 | warning (_("Memory at address 0x%lx is unwritable. " |
0963b4bd | 2391 | "Nothing written"), |
c906108c SS |
2392 | old_address); |
2393 | err = KERN_SUCCESS; | |
2394 | length = 0; | |
2395 | goto out; | |
2396 | } | |
2397 | ||
0963b4bd | 2398 | /* Chain the regions for later use. */ |
8d749320 | 2399 | region_element = XOBNEW (®ion_obstack, struct vm_region_list); |
c5aa993b | 2400 | |
c906108c | 2401 | region_element->protection = protection; |
c5aa993b JM |
2402 | region_element->start = region_address; |
2403 | region_element->length = region_length; | |
c906108c | 2404 | |
0963b4bd | 2405 | /* Chain the regions along with protections. */ |
c906108c | 2406 | region_element->next = region_head; |
c5aa993b JM |
2407 | region_head = region_element; |
2408 | ||
c906108c SS |
2409 | region_address += region_length; |
2410 | remaining_length = remaining_length - region_length; | |
2411 | } | |
2412 | ||
2413 | /* If things fail after this, we give up. | |
942fd805 | 2414 | Somebody is messing up inferior_task's mappings. */ |
c5aa993b | 2415 | |
0963b4bd | 2416 | /* Enable writes to the chained vm regions. */ |
c906108c SS |
2417 | for (scan = region_head; scan; scan = scan->next) |
2418 | { | |
c906108c SS |
2419 | if (!(scan->protection & VM_PROT_WRITE)) |
2420 | { | |
2421 | err = vm_protect (task, | |
2422 | scan->start, | |
2423 | scan->length, | |
2424 | FALSE, | |
2425 | scan->protection | VM_PROT_WRITE); | |
2426 | CHK_GOTO_OUT ("vm_protect: enable write failed", err); | |
2427 | } | |
2428 | } | |
2429 | ||
2430 | err = vm_write (task, | |
2431 | low_address, | |
2432 | copied, | |
2433 | aligned_length); | |
2434 | CHK_GOTO_OUT ("vm_write failed", err); | |
c5aa993b | 2435 | |
0963b4bd | 2436 | /* Set up the original region protections, if they were changed. */ |
c906108c SS |
2437 | for (scan = region_head; scan; scan = scan->next) |
2438 | { | |
c906108c SS |
2439 | if (!(scan->protection & VM_PROT_WRITE)) |
2440 | { | |
2441 | err = vm_protect (task, | |
2442 | scan->start, | |
2443 | scan->length, | |
2444 | FALSE, | |
2445 | scan->protection); | |
2446 | CHK_GOTO_OUT ("vm_protect: enable write failed", err); | |
2447 | } | |
2448 | } | |
2449 | } | |
2450 | ||
c5aa993b | 2451 | out: |
c906108c SS |
2452 | if (deallocate) |
2453 | { | |
2454 | obstack_free (®ion_obstack, 0); | |
c5aa993b | 2455 | |
c906108c SS |
2456 | (void) vm_deallocate (mach_task_self (), |
2457 | copied, | |
2458 | copy_count); | |
2459 | } | |
2460 | ||
2461 | if (err != KERN_SUCCESS) | |
2462 | { | |
8a3fe4f8 | 2463 | warning (_("%s: %s"), errstr, mach_error_string (err)); |
c906108c SS |
2464 | return 0; |
2465 | } | |
2466 | ||
2467 | return length; | |
2468 | } | |
942fd805 | 2469 | |
c906108c | 2470 | \f |
9b3f3ee6 | 2471 | |
edcc890f YQ |
2472 | /* Implement the to_xfer_partial target_ops method for |
2473 | TARGET_OBJECT_MEMORY. */ | |
9b3f3ee6 | 2474 | |
9b409511 | 2475 | static enum target_xfer_status |
9b3f3ee6 | 2476 | gnu_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 | 2477 | CORE_ADDR memaddr, ULONGEST len, ULONGEST *xfered_len) |
c906108c | 2478 | { |
c289427b PA |
2479 | task_t task = (gnu_current_inf |
2480 | ? (gnu_current_inf->task | |
2481 | ? gnu_current_inf->task->port : 0) | |
942fd805 | 2482 | : 0); |
9b3f3ee6 | 2483 | int res; |
c906108c SS |
2484 | |
2485 | if (task == MACH_PORT_NULL) | |
9b3f3ee6 TS |
2486 | return TARGET_XFER_E_IO; |
2487 | ||
2488 | if (writebuf != NULL) | |
2489 | { | |
2490 | inf_debug (gnu_current_inf, "writing %s[%s] <-- %s", | |
b55e14c7 | 2491 | paddress (target_gdbarch (), memaddr), pulongest (len), |
9b3f3ee6 TS |
2492 | host_address_to_string (writebuf)); |
2493 | res = gnu_write_inferior (task, memaddr, writebuf, len); | |
2494 | } | |
c906108c SS |
2495 | else |
2496 | { | |
9b3f3ee6 | 2497 | inf_debug (gnu_current_inf, "reading %s[%s] --> %s", |
b55e14c7 | 2498 | paddress (target_gdbarch (), memaddr), pulongest (len), |
9b3f3ee6 TS |
2499 | host_address_to_string (readbuf)); |
2500 | res = gnu_read_inferior (task, memaddr, readbuf, len); | |
2501 | } | |
9b409511 | 2502 | gdb_assert (res >= 0); |
9b3f3ee6 TS |
2503 | if (res == 0) |
2504 | return TARGET_XFER_E_IO; | |
9b409511 YQ |
2505 | else |
2506 | { | |
2507 | *xfered_len = (ULONGEST) res; | |
2508 | return TARGET_XFER_OK; | |
2509 | } | |
9b3f3ee6 TS |
2510 | } |
2511 | ||
9c4ac400 ST |
2512 | /* GNU does not have auxv, but we can at least fake the AT_ENTRY entry for PIE |
2513 | binaries. */ | |
2514 | static enum target_xfer_status | |
2515 | gnu_xfer_auxv (gdb_byte *readbuf, const gdb_byte *writebuf, | |
2516 | CORE_ADDR memaddr, ULONGEST len, ULONGEST *xfered_len) | |
2517 | { | |
2518 | task_t task = (gnu_current_inf | |
2519 | ? (gnu_current_inf->task | |
2520 | ? gnu_current_inf->task->port : 0) | |
2521 | : 0); | |
2522 | process_t proc; | |
9c4ac400 ST |
2523 | kern_return_t err; |
2524 | vm_address_t entry; | |
2525 | ElfW(auxv_t) auxv[2]; | |
2526 | ||
2527 | if (task == MACH_PORT_NULL) | |
2528 | return TARGET_XFER_E_IO; | |
2529 | if (writebuf != NULL) | |
2530 | return TARGET_XFER_E_IO; | |
2531 | ||
2532 | if (memaddr == sizeof (auxv)) | |
2533 | return TARGET_XFER_EOF; | |
2534 | if (memaddr > sizeof (auxv)) | |
2535 | return TARGET_XFER_E_IO; | |
2536 | ||
2537 | err = proc_task2proc (proc_server, task, &proc); | |
2538 | if (err != 0) | |
2539 | return TARGET_XFER_E_IO; | |
2540 | ||
2541 | /* Get entry from proc server. */ | |
2542 | err = proc_get_entry (proc, &entry); | |
2543 | if (err != 0) | |
2544 | return TARGET_XFER_E_IO; | |
2545 | ||
2546 | /* Fake auxv entry. */ | |
2547 | auxv[0].a_type = AT_ENTRY; | |
2548 | auxv[0].a_un.a_val = entry; | |
2549 | auxv[1].a_type = AT_NULL; | |
2550 | auxv[1].a_un.a_val = 0; | |
2551 | ||
2552 | inf_debug (gnu_current_inf, "reading auxv %s[%s] --> %s", | |
2553 | paddress (target_gdbarch (), memaddr), pulongest (len), | |
2554 | host_address_to_string (readbuf)); | |
2555 | ||
2556 | if (memaddr + len > sizeof (auxv)) | |
2557 | len = sizeof (auxv) - memaddr; | |
2558 | ||
2559 | memcpy (readbuf, (gdb_byte *) &auxv + memaddr, len); | |
2560 | *xfered_len = len; | |
2561 | ||
2562 | return TARGET_XFER_OK; | |
2563 | } | |
2564 | ||
9b3f3ee6 TS |
2565 | /* Target to_xfer_partial implementation. */ |
2566 | ||
f6ac5f3d PA |
2567 | enum target_xfer_status |
2568 | gnu_nat_target::xfer_partial (enum target_object object, | |
2569 | const char *annex, gdb_byte *readbuf, | |
2570 | const gdb_byte *writebuf, ULONGEST offset, | |
2571 | ULONGEST len, ULONGEST *xfered_len) | |
9b3f3ee6 TS |
2572 | { |
2573 | switch (object) | |
2574 | { | |
2575 | case TARGET_OBJECT_MEMORY: | |
9b409511 | 2576 | return gnu_xfer_memory (readbuf, writebuf, offset, len, xfered_len); |
9c4ac400 ST |
2577 | case TARGET_OBJECT_AUXV: |
2578 | return gnu_xfer_auxv (readbuf, writebuf, offset, len, xfered_len); | |
9b3f3ee6 | 2579 | default: |
2ed4b548 | 2580 | return TARGET_XFER_E_IO; |
c906108c SS |
2581 | } |
2582 | } | |
942fd805 | 2583 | |
57e76fac | 2584 | /* Call FUNC on each memory region in the task. */ |
f6ac5f3d PA |
2585 | |
2586 | int | |
2587 | gnu_nat_target::find_memory_regions (find_memory_region_ftype func, | |
2588 | void *data) | |
57e76fac | 2589 | { |
0947023d | 2590 | kern_return_t err; |
57e76fac MS |
2591 | task_t task; |
2592 | vm_address_t region_address, last_region_address, last_region_end; | |
2593 | vm_prot_t last_protection; | |
2594 | ||
c289427b | 2595 | if (gnu_current_inf == 0 || gnu_current_inf->task == 0) |
57e76fac | 2596 | return 0; |
c289427b | 2597 | task = gnu_current_inf->task->port; |
57e76fac MS |
2598 | if (task == MACH_PORT_NULL) |
2599 | return 0; | |
2600 | ||
2601 | region_address = last_region_address = last_region_end = VM_MIN_ADDRESS; | |
2602 | last_protection = VM_PROT_NONE; | |
2603 | while (region_address < VM_MAX_ADDRESS) | |
2604 | { | |
2605 | vm_prot_t protection; | |
2606 | vm_prot_t max_protection; | |
2607 | vm_inherit_t inheritance; | |
2608 | boolean_t shared; | |
2609 | mach_port_t object_name; | |
2610 | vm_offset_t offset; | |
2611 | vm_size_t region_length = VM_MAX_ADDRESS - region_address; | |
57e76fac MS |
2612 | |
2613 | err = vm_region (task, | |
2614 | ®ion_address, | |
2615 | ®ion_length, | |
2616 | &protection, | |
2617 | &max_protection, | |
2618 | &inheritance, | |
2619 | &shared, | |
2620 | &object_name, | |
2621 | &offset); | |
2622 | if (err == KERN_NO_SPACE) | |
2623 | break; | |
2624 | if (err != KERN_SUCCESS) | |
2625 | { | |
8a3fe4f8 | 2626 | warning (_("vm_region failed: %s"), mach_error_string (err)); |
57e76fac MS |
2627 | return -1; |
2628 | } | |
2629 | ||
2630 | if (protection == last_protection && region_address == last_region_end) | |
2631 | /* This region is contiguous with and indistinguishable from | |
2632 | the previous one, so we just extend that one. */ | |
2633 | last_region_end = region_address += region_length; | |
2634 | else | |
2635 | { | |
2636 | /* This region is distinct from the last one we saw, so report | |
2637 | that previous one. */ | |
2638 | if (last_protection != VM_PROT_NONE) | |
2639 | (*func) (last_region_address, | |
2640 | last_region_end - last_region_address, | |
2641 | last_protection & VM_PROT_READ, | |
2642 | last_protection & VM_PROT_WRITE, | |
2643 | last_protection & VM_PROT_EXECUTE, | |
4f69f4c2 | 2644 | 1, /* MODIFIED is unknown, pass it as true. */ |
57e76fac MS |
2645 | data); |
2646 | last_region_address = region_address; | |
2647 | last_region_end = region_address += region_length; | |
2648 | last_protection = protection; | |
2649 | } | |
2650 | } | |
47f21bcc | 2651 | |
1a113c93 MS |
2652 | /* Report the final region. */ |
2653 | if (last_region_end > last_region_address && last_protection != VM_PROT_NONE) | |
2654 | (*func) (last_region_address, last_region_end - last_region_address, | |
2655 | last_protection & VM_PROT_READ, | |
2656 | last_protection & VM_PROT_WRITE, | |
2657 | last_protection & VM_PROT_EXECUTE, | |
4f69f4c2 | 2658 | 1, /* MODIFIED is unknown, pass it as true. */ |
1a113c93 | 2659 | data); |
47f21bcc MS |
2660 | |
2661 | return 0; | |
57e76fac MS |
2662 | } |
2663 | ||
c906108c | 2664 | \f |
ed9a39eb | 2665 | /* Return printable description of proc. */ |
f90b2b1d | 2666 | char * |
ed9a39eb JM |
2667 | proc_string (struct proc *proc) |
2668 | { | |
2669 | static char tid_str[80]; | |
d8734c88 | 2670 | |
ed9a39eb | 2671 | if (proc_is_task (proc)) |
8c042590 | 2672 | xsnprintf (tid_str, sizeof (tid_str), "process %d", proc->inf->pid); |
ed9a39eb | 2673 | else |
8c042590 PM |
2674 | xsnprintf (tid_str, sizeof (tid_str), "Thread %d.%d", |
2675 | proc->inf->pid, proc->tid); | |
ed9a39eb JM |
2676 | return tid_str; |
2677 | } | |
2678 | ||
a068643d | 2679 | std::string |
f6ac5f3d | 2680 | gnu_nat_target::pid_to_str (ptid_t ptid) |
ed9a39eb | 2681 | { |
c289427b | 2682 | struct inf *inf = gnu_current_inf; |
e38504b3 | 2683 | int tid = ptid.lwp (); |
ed9a39eb JM |
2684 | struct proc *thread = inf_tid_to_thread (inf, tid); |
2685 | ||
2686 | if (thread) | |
2687 | return proc_string (thread); | |
2688 | else | |
a068643d | 2689 | return string_printf ("bogus thread id %d", tid); |
ed9a39eb | 2690 | } |
942fd805 | 2691 | |
c906108c | 2692 | \f |
c906108c SS |
2693 | /* User task commands. */ |
2694 | ||
28578e6b YQ |
2695 | static struct cmd_list_element *set_task_cmd_list = 0; |
2696 | static struct cmd_list_element *show_task_cmd_list = 0; | |
c906108c SS |
2697 | /* User thread commands. */ |
2698 | ||
2699 | /* Commands with a prefix of `set/show thread'. */ | |
2700 | extern struct cmd_list_element *thread_cmd_list; | |
2701 | struct cmd_list_element *set_thread_cmd_list = NULL; | |
2702 | struct cmd_list_element *show_thread_cmd_list = NULL; | |
2703 | ||
2704 | /* Commands with a prefix of `set/show thread default'. */ | |
2705 | struct cmd_list_element *set_thread_default_cmd_list = NULL; | |
2706 | struct cmd_list_element *show_thread_default_cmd_list = NULL; | |
2707 | ||
2708 | static void | |
981a3fb3 | 2709 | set_thread_cmd (const char *args, int from_tty) |
c906108c | 2710 | { |
0963b4bd MS |
2711 | printf_unfiltered ("\"set thread\" must be followed by the " |
2712 | "name of a thread property, or \"default\".\n"); | |
c906108c SS |
2713 | } |
2714 | ||
2715 | static void | |
981a3fb3 | 2716 | show_thread_cmd (const char *args, int from_tty) |
c906108c | 2717 | { |
0963b4bd MS |
2718 | printf_unfiltered ("\"show thread\" must be followed by the " |
2719 | "name of a thread property, or \"default\".\n"); | |
c906108c SS |
2720 | } |
2721 | ||
2722 | static void | |
981a3fb3 | 2723 | set_thread_default_cmd (const char *args, int from_tty) |
c906108c | 2724 | { |
0963b4bd MS |
2725 | printf_unfiltered ("\"set thread default\" must be followed " |
2726 | "by the name of a thread property.\n"); | |
c906108c SS |
2727 | } |
2728 | ||
2729 | static void | |
981a3fb3 | 2730 | show_thread_default_cmd (const char *args, int from_tty) |
c906108c | 2731 | { |
0963b4bd MS |
2732 | printf_unfiltered ("\"show thread default\" must be followed " |
2733 | "by the name of a thread property.\n"); | |
c906108c SS |
2734 | } |
2735 | ||
2736 | static int | |
924514e1 | 2737 | parse_int_arg (const char *args, const char *cmd_prefix) |
c906108c SS |
2738 | { |
2739 | if (args) | |
2740 | { | |
2741 | char *arg_end; | |
2742 | int val = strtoul (args, &arg_end, 10); | |
d8734c88 | 2743 | |
c906108c SS |
2744 | if (*args && *arg_end == '\0') |
2745 | return val; | |
2746 | } | |
0963b4bd MS |
2747 | error (_("Illegal argument for \"%s\" command, should be an integer."), |
2748 | cmd_prefix); | |
c906108c SS |
2749 | } |
2750 | ||
2751 | static int | |
924514e1 TS |
2752 | _parse_bool_arg (const char *args, const char *t_val, const char *f_val, |
2753 | const char *cmd_prefix) | |
c906108c SS |
2754 | { |
2755 | if (!args || strcmp (args, t_val) == 0) | |
2756 | return 1; | |
2757 | else if (strcmp (args, f_val) == 0) | |
2758 | return 0; | |
2759 | else | |
0963b4bd MS |
2760 | error (_("Illegal argument for \"%s\" command, " |
2761 | "should be \"%s\" or \"%s\"."), | |
c906108c SS |
2762 | cmd_prefix, t_val, f_val); |
2763 | } | |
2764 | ||
2765 | #define parse_bool_arg(args, cmd_prefix) \ | |
2766 | _parse_bool_arg (args, "on", "off", cmd_prefix) | |
2767 | ||
2768 | static void | |
924514e1 | 2769 | check_empty (const char *args, const char *cmd_prefix) |
c906108c SS |
2770 | { |
2771 | if (args) | |
8a3fe4f8 | 2772 | error (_("Garbage after \"%s\" command: `%s'"), cmd_prefix, args); |
c906108c SS |
2773 | } |
2774 | ||
2775 | /* Returns the alive thread named by INFERIOR_PID, or signals an error. */ | |
2776 | static struct proc * | |
fba45db2 | 2777 | cur_thread (void) |
c906108c SS |
2778 | { |
2779 | struct inf *inf = cur_inf (); | |
617fd3b5 | 2780 | struct proc *thread = inf_tid_to_thread (inf, |
e38504b3 | 2781 | inferior_ptid.lwp ()); |
c906108c | 2782 | if (!thread) |
8a3fe4f8 | 2783 | error (_("No current thread.")); |
c906108c SS |
2784 | return thread; |
2785 | } | |
2786 | ||
2787 | /* Returns the current inferior, but signals an error if it has no task. */ | |
2788 | static struct inf * | |
fba45db2 | 2789 | active_inf (void) |
c906108c SS |
2790 | { |
2791 | struct inf *inf = cur_inf (); | |
d8734c88 | 2792 | |
c5aa993b | 2793 | if (!inf->task) |
8a3fe4f8 | 2794 | error (_("No current process.")); |
c906108c SS |
2795 | return inf; |
2796 | } | |
942fd805 | 2797 | |
c906108c SS |
2798 | \f |
2799 | static void | |
785102a7 | 2800 | set_task_pause_cmd (int arg, int from_tty) |
c906108c SS |
2801 | { |
2802 | struct inf *inf = cur_inf (); | |
2803 | int old_sc = inf->pause_sc; | |
2804 | ||
785102a7 | 2805 | inf->pause_sc = arg; |
c906108c SS |
2806 | |
2807 | if (old_sc == 0 && inf->pause_sc != 0) | |
2808 | /* If the task is currently unsuspended, immediately suspend it, | |
2809 | otherwise wait until the next time it gets control. */ | |
14a8ad62 | 2810 | gnu_target->inf_suspend (inf); |
c906108c SS |
2811 | } |
2812 | ||
785102a7 | 2813 | static void |
5fed81ff | 2814 | set_task_pause_cmd (const char *args, int from_tty) |
785102a7 TS |
2815 | { |
2816 | set_task_pause_cmd (parse_bool_arg (args, "set task pause"), from_tty); | |
2817 | } | |
2818 | ||
c906108c | 2819 | static void |
5fed81ff | 2820 | show_task_pause_cmd (const char *args, int from_tty) |
c906108c SS |
2821 | { |
2822 | struct inf *inf = cur_inf (); | |
d8734c88 | 2823 | |
c906108c SS |
2824 | check_empty (args, "show task pause"); |
2825 | printf_unfiltered ("The inferior task %s suspended while gdb has control.\n", | |
2826 | inf->task | |
2827 | ? (inf->pause_sc == 0 ? "isn't" : "is") | |
2828 | : (inf->pause_sc == 0 ? "won't be" : "will be")); | |
2829 | } | |
2830 | ||
2831 | static void | |
5fed81ff | 2832 | set_task_detach_sc_cmd (const char *args, int from_tty) |
c906108c | 2833 | { |
0963b4bd MS |
2834 | cur_inf ()->detach_sc = parse_int_arg (args, |
2835 | "set task detach-suspend-count"); | |
c906108c SS |
2836 | } |
2837 | ||
2838 | static void | |
5fed81ff | 2839 | show_task_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
2840 | { |
2841 | check_empty (args, "show task detach-suspend-count"); | |
0963b4bd MS |
2842 | printf_unfiltered ("The inferior task will be left with a " |
2843 | "suspend count of %d when detaching.\n", | |
c906108c SS |
2844 | cur_inf ()->detach_sc); |
2845 | } | |
942fd805 | 2846 | |
c906108c SS |
2847 | \f |
2848 | static void | |
5fed81ff | 2849 | set_thread_default_pause_cmd (const char *args, int from_tty) |
c906108c SS |
2850 | { |
2851 | struct inf *inf = cur_inf (); | |
d8734c88 | 2852 | |
c906108c SS |
2853 | inf->default_thread_pause_sc = |
2854 | parse_bool_arg (args, "set thread default pause") ? 0 : 1; | |
2855 | } | |
2856 | ||
2857 | static void | |
5fed81ff | 2858 | show_thread_default_pause_cmd (const char *args, int from_tty) |
c906108c SS |
2859 | { |
2860 | struct inf *inf = cur_inf (); | |
2861 | int sc = inf->default_thread_pause_sc; | |
d8734c88 | 2862 | |
c906108c SS |
2863 | check_empty (args, "show thread default pause"); |
2864 | printf_unfiltered ("New threads %s suspended while gdb has control%s.\n", | |
2865 | sc ? "are" : "aren't", | |
2866 | !sc && inf->pause_sc ? " (but the task is)" : ""); | |
2867 | } | |
2868 | ||
2869 | static void | |
5fed81ff | 2870 | set_thread_default_run_cmd (const char *args, int from_tty) |
c906108c SS |
2871 | { |
2872 | struct inf *inf = cur_inf (); | |
d8734c88 | 2873 | |
c906108c SS |
2874 | inf->default_thread_run_sc = |
2875 | parse_bool_arg (args, "set thread default run") ? 0 : 1; | |
2876 | } | |
2877 | ||
2878 | static void | |
5fed81ff | 2879 | show_thread_default_run_cmd (const char *args, int from_tty) |
c906108c SS |
2880 | { |
2881 | struct inf *inf = cur_inf (); | |
d8734c88 | 2882 | |
c906108c SS |
2883 | check_empty (args, "show thread default run"); |
2884 | printf_unfiltered ("New threads %s allowed to run.\n", | |
2885 | inf->default_thread_run_sc == 0 ? "are" : "aren't"); | |
2886 | } | |
2887 | ||
2888 | static void | |
5fed81ff | 2889 | set_thread_default_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
2890 | { |
2891 | cur_inf ()->default_thread_detach_sc = | |
2892 | parse_int_arg (args, "set thread default detach-suspend-count"); | |
2893 | } | |
2894 | ||
2895 | static void | |
5fed81ff | 2896 | show_thread_default_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
2897 | { |
2898 | check_empty (args, "show thread default detach-suspend-count"); | |
2899 | printf_unfiltered ("New threads will get a detach-suspend-count of %d.\n", | |
2900 | cur_inf ()->default_thread_detach_sc); | |
2901 | } | |
942fd805 | 2902 | |
c906108c SS |
2903 | \f |
2904 | /* Steal a send right called NAME in the inferior task, and make it PROC's | |
2905 | saved exception port. */ | |
14a8ad62 ST |
2906 | void |
2907 | gnu_nat_target::steal_exc_port (struct proc *proc, mach_port_t name) | |
c906108c | 2908 | { |
0947023d | 2909 | kern_return_t err; |
c906108c SS |
2910 | mach_port_t port; |
2911 | mach_msg_type_name_t port_type; | |
2912 | ||
2913 | if (!proc || !proc->inf->task) | |
8a3fe4f8 | 2914 | error (_("No inferior task.")); |
c906108c SS |
2915 | |
2916 | err = mach_port_extract_right (proc->inf->task->port, | |
2917 | name, MACH_MSG_TYPE_COPY_SEND, | |
2918 | &port, &port_type); | |
2919 | if (err) | |
a9a758e3 | 2920 | error (_("Couldn't extract send right %lu from inferior: %s"), |
dc672865 | 2921 | name, safe_strerror (err)); |
c906108c SS |
2922 | |
2923 | if (proc->saved_exc_port) | |
2924 | /* Get rid of our reference to the old one. */ | |
2925 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
2926 | ||
2927 | proc->saved_exc_port = port; | |
2928 | ||
c5aa993b | 2929 | if (!proc->exc_port) |
0963b4bd MS |
2930 | /* If PROC is a thread, we may not have set its exception port |
2931 | before. We can't use proc_steal_exc_port because it also sets | |
2932 | saved_exc_port. */ | |
c906108c | 2933 | { |
c5aa993b JM |
2934 | proc->exc_port = proc->inf->event_port; |
2935 | err = proc_set_exception_port (proc, proc->exc_port); | |
8a3fe4f8 | 2936 | error (_("Can't set exception port for %s: %s"), |
dc672865 | 2937 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
2938 | } |
2939 | } | |
942fd805 | 2940 | |
c906108c | 2941 | static void |
5fed81ff | 2942 | set_task_exc_port_cmd (const char *args, int from_tty) |
c906108c SS |
2943 | { |
2944 | struct inf *inf = cur_inf (); | |
d8734c88 | 2945 | |
c906108c | 2946 | if (!args) |
8a3fe4f8 | 2947 | error (_("No argument to \"set task exception-port\" command.")); |
14a8ad62 | 2948 | gnu_target->steal_exc_port (inf->task, parse_and_eval_address (args)); |
c906108c SS |
2949 | } |
2950 | ||
c5aa993b | 2951 | static void |
5fed81ff | 2952 | set_stopped_cmd (const char *args, int from_tty) |
c906108c SS |
2953 | { |
2954 | cur_inf ()->stopped = _parse_bool_arg (args, "yes", "no", "set stopped"); | |
2955 | } | |
2956 | ||
2957 | static void | |
5fed81ff | 2958 | show_stopped_cmd (const char *args, int from_tty) |
c906108c SS |
2959 | { |
2960 | struct inf *inf = active_inf (); | |
d8734c88 | 2961 | |
c906108c SS |
2962 | check_empty (args, "show stopped"); |
2963 | printf_unfiltered ("The inferior process %s stopped.\n", | |
2964 | inf->stopped ? "is" : "isn't"); | |
2965 | } | |
2966 | ||
c5aa993b | 2967 | static void |
5fed81ff | 2968 | set_sig_thread_cmd (const char *args, int from_tty) |
c906108c | 2969 | { |
c906108c SS |
2970 | struct inf *inf = cur_inf (); |
2971 | ||
c5aa993b | 2972 | if (!args || (!isdigit (*args) && strcmp (args, "none") != 0)) |
8a3fe4f8 | 2973 | error (_("Illegal argument to \"set signal-thread\" command.\n" |
c3187fa5 | 2974 | "Should be a thread ID, or \"none\".")); |
c906108c SS |
2975 | |
2976 | if (strcmp (args, "none") == 0) | |
2977 | inf->signal_thread = 0; | |
2978 | else | |
2979 | { | |
c3187fa5 | 2980 | struct thread_info *tp = parse_thread_id (args, NULL); |
e38504b3 | 2981 | inf->signal_thread = inf_tid_to_thread (inf, tp->ptid.lwp ()); |
c906108c SS |
2982 | } |
2983 | } | |
2984 | ||
2985 | static void | |
5fed81ff | 2986 | show_sig_thread_cmd (const char *args, int from_tty) |
c906108c SS |
2987 | { |
2988 | struct inf *inf = active_inf (); | |
d8734c88 | 2989 | |
c906108c SS |
2990 | check_empty (args, "show signal-thread"); |
2991 | if (inf->signal_thread) | |
2992 | printf_unfiltered ("The signal thread is %s.\n", | |
2993 | proc_string (inf->signal_thread)); | |
2994 | else | |
2995 | printf_unfiltered ("There is no signal thread.\n"); | |
2996 | } | |
942fd805 | 2997 | |
c906108c | 2998 | \f |
c5aa993b | 2999 | static void |
785102a7 | 3000 | set_signals_cmd (int arg, int from_tty) |
c906108c | 3001 | { |
c906108c SS |
3002 | struct inf *inf = cur_inf (); |
3003 | ||
785102a7 | 3004 | inf->want_signals = arg; |
c906108c SS |
3005 | |
3006 | if (inf->task && inf->want_signals != inf->traced) | |
3007 | /* Make this take effect immediately in a running process. */ | |
14a8ad62 | 3008 | gnu_target->inf_set_traced (inf, inf->want_signals); |
c906108c SS |
3009 | } |
3010 | ||
785102a7 | 3011 | static void |
5fed81ff | 3012 | set_signals_cmd (const char *args, int from_tty) |
785102a7 TS |
3013 | { |
3014 | set_signals_cmd(parse_bool_arg (args, "set signals"), from_tty); | |
3015 | } | |
3016 | ||
c906108c | 3017 | static void |
5fed81ff | 3018 | show_signals_cmd (const char *args, int from_tty) |
c906108c SS |
3019 | { |
3020 | struct inf *inf = cur_inf (); | |
d8734c88 | 3021 | |
c906108c SS |
3022 | check_empty (args, "show signals"); |
3023 | printf_unfiltered ("The inferior process's signals %s intercepted.\n", | |
3024 | inf->task | |
3025 | ? (inf->traced ? "are" : "aren't") | |
3026 | : (inf->want_signals ? "will be" : "won't be")); | |
3027 | } | |
3028 | ||
c5aa993b | 3029 | static void |
785102a7 | 3030 | set_exceptions_cmd (int arg, int from_tty) |
c906108c SS |
3031 | { |
3032 | struct inf *inf = cur_inf (); | |
c906108c | 3033 | |
c26e9cbb YQ |
3034 | /* Make this take effect immediately in a running process. */ |
3035 | /* XXX */ ; | |
c906108c | 3036 | |
785102a7 TS |
3037 | inf->want_exceptions = arg; |
3038 | } | |
3039 | ||
3040 | static void | |
5fed81ff | 3041 | set_exceptions_cmd (const char *args, int from_tty) |
785102a7 TS |
3042 | { |
3043 | set_exceptions_cmd (parse_bool_arg (args, "set exceptions"), from_tty); | |
c906108c SS |
3044 | } |
3045 | ||
3046 | static void | |
5fed81ff | 3047 | show_exceptions_cmd (const char *args, int from_tty) |
c906108c SS |
3048 | { |
3049 | struct inf *inf = cur_inf (); | |
d8734c88 | 3050 | |
c906108c SS |
3051 | check_empty (args, "show exceptions"); |
3052 | printf_unfiltered ("Exceptions in the inferior %s trapped.\n", | |
3053 | inf->task | |
3054 | ? (inf->want_exceptions ? "are" : "aren't") | |
3055 | : (inf->want_exceptions ? "will be" : "won't be")); | |
3056 | } | |
942fd805 | 3057 | |
c906108c SS |
3058 | \f |
3059 | static void | |
981a3fb3 | 3060 | set_task_cmd (const char *args, int from_tty) |
c906108c | 3061 | { |
942fd805 MK |
3062 | printf_unfiltered ("\"set task\" must be followed by the name" |
3063 | " of a task property.\n"); | |
c906108c SS |
3064 | } |
3065 | ||
3066 | static void | |
981a3fb3 | 3067 | show_task_cmd (const char *args, int from_tty) |
c906108c SS |
3068 | { |
3069 | struct inf *inf = cur_inf (); | |
3070 | ||
3071 | check_empty (args, "show task"); | |
3072 | ||
3073 | show_signals_cmd (0, from_tty); | |
3074 | show_exceptions_cmd (0, from_tty); | |
3075 | show_task_pause_cmd (0, from_tty); | |
3076 | ||
3077 | if (inf->pause_sc == 0) | |
3078 | show_thread_default_pause_cmd (0, from_tty); | |
3079 | show_thread_default_run_cmd (0, from_tty); | |
3080 | ||
3081 | if (inf->task) | |
3082 | { | |
3083 | show_stopped_cmd (0, from_tty); | |
3084 | show_sig_thread_cmd (0, from_tty); | |
3085 | } | |
3086 | ||
3087 | if (inf->detach_sc != 0) | |
3088 | show_task_detach_sc_cmd (0, from_tty); | |
3089 | if (inf->default_thread_detach_sc != 0) | |
3090 | show_thread_default_detach_sc_cmd (0, from_tty); | |
3091 | } | |
942fd805 | 3092 | |
c906108c SS |
3093 | \f |
3094 | static void | |
5fed81ff | 3095 | set_noninvasive_cmd (const char *args, int from_tty) |
c906108c SS |
3096 | { |
3097 | /* Invert the sense of the arg for each component. */ | |
785102a7 | 3098 | int inv_arg = parse_bool_arg (args, "set noninvasive") ? 0 : 1; |
c906108c | 3099 | |
785102a7 TS |
3100 | set_task_pause_cmd (inv_arg, from_tty); |
3101 | set_signals_cmd (inv_arg, from_tty); | |
3102 | set_exceptions_cmd (inv_arg, from_tty); | |
c906108c | 3103 | } |
942fd805 | 3104 | |
c906108c SS |
3105 | \f |
3106 | static void | |
0cc6f43d | 3107 | info_port_rights (const char *args, mach_port_type_t only) |
c906108c SS |
3108 | { |
3109 | struct inf *inf = active_inf (); | |
3d6d86c6 | 3110 | struct value *vmark = value_mark (); |
c906108c SS |
3111 | |
3112 | if (args) | |
3113 | /* Explicit list of port rights. */ | |
3114 | { | |
3115 | while (*args) | |
3116 | { | |
3d6d86c6 | 3117 | struct value *val = parse_to_comma_and_eval (&args); |
c906108c SS |
3118 | long right = value_as_long (val); |
3119 | error_t err = | |
d8734c88 MS |
3120 | print_port_info (right, 0, inf->task->port, PORTINFO_DETAILS, |
3121 | stdout); | |
3122 | ||
c906108c | 3123 | if (err) |
8a3fe4f8 | 3124 | error (_("%ld: %s."), right, safe_strerror (err)); |
c906108c SS |
3125 | } |
3126 | } | |
3127 | else | |
3128 | /* Print all of them. */ | |
3129 | { | |
3130 | error_t err = | |
d8734c88 MS |
3131 | print_task_ports_info (inf->task->port, only, PORTINFO_DETAILS, |
3132 | stdout); | |
c906108c | 3133 | if (err) |
8a3fe4f8 | 3134 | error (_("%s."), safe_strerror (err)); |
c906108c SS |
3135 | } |
3136 | ||
3137 | value_free_to_mark (vmark); | |
3138 | } | |
3139 | ||
3140 | static void | |
1d12d88f | 3141 | info_send_rights_cmd (const char *args, int from_tty) |
c906108c SS |
3142 | { |
3143 | info_port_rights (args, MACH_PORT_TYPE_SEND); | |
3144 | } | |
942fd805 | 3145 | |
c906108c | 3146 | static void |
1d12d88f | 3147 | info_recv_rights_cmd (const char *args, int from_tty) |
c906108c SS |
3148 | { |
3149 | info_port_rights (args, MACH_PORT_TYPE_RECEIVE); | |
3150 | } | |
942fd805 | 3151 | |
c906108c | 3152 | static void |
1d12d88f | 3153 | info_port_sets_cmd (const char *args, int from_tty) |
c906108c SS |
3154 | { |
3155 | info_port_rights (args, MACH_PORT_TYPE_PORT_SET); | |
3156 | } | |
942fd805 | 3157 | |
c906108c | 3158 | static void |
1d12d88f | 3159 | info_dead_names_cmd (const char *args, int from_tty) |
c906108c SS |
3160 | { |
3161 | info_port_rights (args, MACH_PORT_TYPE_DEAD_NAME); | |
3162 | } | |
942fd805 | 3163 | |
c906108c | 3164 | static void |
1d12d88f | 3165 | info_port_rights_cmd (const char *args, int from_tty) |
c906108c SS |
3166 | { |
3167 | info_port_rights (args, ~0); | |
3168 | } | |
942fd805 | 3169 | |
c906108c | 3170 | \f |
c5aa993b | 3171 | static void |
942fd805 | 3172 | add_task_commands (void) |
c906108c | 3173 | { |
1a966eab AC |
3174 | add_cmd ("pause", class_run, set_thread_default_pause_cmd, _("\ |
3175 | Set whether the new threads are suspended while gdb has control.\n\ | |
942fd805 MK |
3176 | This property normally has no effect because the whole task is\n\ |
3177 | suspended, however, that may be disabled with \"set task pause off\".\n\ | |
1a966eab | 3178 | The default value is \"off\"."), |
c906108c | 3179 | &set_thread_default_cmd_list); |
1a966eab AC |
3180 | add_cmd ("pause", no_class, show_thread_default_pause_cmd, _("\ |
3181 | Show whether new threads are suspended while gdb has control."), | |
c906108c | 3182 | &show_thread_default_cmd_list); |
942fd805 | 3183 | |
1a966eab AC |
3184 | add_cmd ("run", class_run, set_thread_default_run_cmd, _("\ |
3185 | Set whether new threads are allowed to run (once gdb has noticed them)."), | |
c906108c | 3186 | &set_thread_default_cmd_list); |
1a966eab AC |
3187 | add_cmd ("run", no_class, show_thread_default_run_cmd, _("\ |
3188 | Show whether new threads are allowed to run (once gdb has noticed them)."), | |
c906108c | 3189 | &show_thread_default_cmd_list); |
942fd805 | 3190 | |
c906108c | 3191 | add_cmd ("detach-suspend-count", class_run, set_thread_default_detach_sc_cmd, |
1a966eab | 3192 | _("Set the default detach-suspend-count value for new threads."), |
c906108c SS |
3193 | &set_thread_default_cmd_list); |
3194 | add_cmd ("detach-suspend-count", no_class, show_thread_default_detach_sc_cmd, | |
1a966eab | 3195 | _("Show the default detach-suspend-count value for new threads."), |
c906108c SS |
3196 | &show_thread_default_cmd_list); |
3197 | ||
1a966eab AC |
3198 | add_cmd ("signals", class_run, set_signals_cmd, _("\ |
3199 | Set whether the inferior process's signals will be intercepted.\n\ | |
3200 | Mach exceptions (such as breakpoint traps) are not affected."), | |
c906108c SS |
3201 | &setlist); |
3202 | add_alias_cmd ("sigs", "signals", class_run, 1, &setlist); | |
1a966eab AC |
3203 | add_cmd ("signals", no_class, show_signals_cmd, _("\ |
3204 | Show whether the inferior process's signals will be intercepted."), | |
c906108c SS |
3205 | &showlist); |
3206 | add_alias_cmd ("sigs", "signals", no_class, 1, &showlist); | |
3207 | ||
1a966eab AC |
3208 | add_cmd ("signal-thread", class_run, set_sig_thread_cmd, _("\ |
3209 | Set the thread that gdb thinks is the libc signal thread.\n\ | |
3210 | This thread is run when delivering a signal to a non-stopped process."), | |
c906108c SS |
3211 | &setlist); |
3212 | add_alias_cmd ("sigthread", "signal-thread", class_run, 1, &setlist); | |
1a966eab AC |
3213 | add_cmd ("signal-thread", no_class, show_sig_thread_cmd, _("\ |
3214 | Set the thread that gdb thinks is the libc signal thread."), | |
c906108c SS |
3215 | &showlist); |
3216 | add_alias_cmd ("sigthread", "signal-thread", no_class, 1, &showlist); | |
3217 | ||
1a966eab AC |
3218 | add_cmd ("stopped", class_run, set_stopped_cmd, _("\ |
3219 | Set whether gdb thinks the inferior process is stopped as with SIGSTOP.\n\ | |
3220 | Stopped process will be continued by sending them a signal."), | |
c906108c | 3221 | &setlist); |
fe79276f | 3222 | add_cmd ("stopped", no_class, show_stopped_cmd, _("\ |
1a966eab | 3223 | Show whether gdb thinks the inferior process is stopped as with SIGSTOP."), |
c906108c SS |
3224 | &showlist); |
3225 | ||
1a966eab AC |
3226 | add_cmd ("exceptions", class_run, set_exceptions_cmd, _("\ |
3227 | Set whether exceptions in the inferior process will be trapped.\n\ | |
942fd805 | 3228 | When exceptions are turned off, neither breakpoints nor single-stepping\n\ |
1a966eab | 3229 | will work."), |
c906108c SS |
3230 | &setlist); |
3231 | /* Allow `set exc' despite conflict with `set exception-port'. */ | |
3232 | add_alias_cmd ("exc", "exceptions", class_run, 1, &setlist); | |
1a966eab AC |
3233 | add_cmd ("exceptions", no_class, show_exceptions_cmd, _("\ |
3234 | Show whether exceptions in the inferior process will be trapped."), | |
c906108c SS |
3235 | &showlist); |
3236 | ||
3237 | add_prefix_cmd ("task", no_class, set_task_cmd, | |
1bedd215 | 3238 | _("Command prefix for setting task attributes."), |
c906108c SS |
3239 | &set_task_cmd_list, "set task ", 0, &setlist); |
3240 | add_prefix_cmd ("task", no_class, show_task_cmd, | |
1bedd215 | 3241 | _("Command prefix for showing task attributes."), |
c906108c SS |
3242 | &show_task_cmd_list, "show task ", 0, &showlist); |
3243 | ||
1a966eab AC |
3244 | add_cmd ("pause", class_run, set_task_pause_cmd, _("\ |
3245 | Set whether the task is suspended while gdb has control.\n\ | |
942fd805 MK |
3246 | A value of \"on\" takes effect immediately, otherwise nothing happens\n\ |
3247 | until the next time the program is continued.\n\ | |
3248 | When setting this to \"off\", \"set thread default pause on\" can be\n\ | |
1a966eab | 3249 | used to pause individual threads by default instead."), |
c906108c SS |
3250 | &set_task_cmd_list); |
3251 | add_cmd ("pause", no_class, show_task_pause_cmd, | |
1a966eab | 3252 | _("Show whether the task is suspended while gdb has control."), |
c906108c | 3253 | &show_task_cmd_list); |
942fd805 | 3254 | |
c906108c | 3255 | add_cmd ("detach-suspend-count", class_run, set_task_detach_sc_cmd, |
1a966eab | 3256 | _("Set the suspend count will leave on the thread when detaching."), |
c906108c SS |
3257 | &set_task_cmd_list); |
3258 | add_cmd ("detach-suspend-count", no_class, show_task_detach_sc_cmd, | |
0963b4bd MS |
3259 | _("Show the suspend count will leave " |
3260 | "on the thread when detaching."), | |
c906108c SS |
3261 | &show_task_cmd_list); |
3262 | ||
1a966eab AC |
3263 | add_cmd ("exception-port", no_class, set_task_exc_port_cmd, _("\ |
3264 | Set the task exception port to which we forward exceptions.\n\ | |
3265 | The argument should be the value of the send right in the task."), | |
c906108c SS |
3266 | &set_task_cmd_list); |
3267 | add_alias_cmd ("excp", "exception-port", no_class, 1, &set_task_cmd_list); | |
942fd805 MK |
3268 | add_alias_cmd ("exc-port", "exception-port", no_class, 1, |
3269 | &set_task_cmd_list); | |
c906108c SS |
3270 | |
3271 | /* A convenient way of turning on all options require to noninvasively | |
3272 | debug running tasks. */ | |
1a966eab AC |
3273 | add_cmd ("noninvasive", no_class, set_noninvasive_cmd, _("\ |
3274 | Set task options so that we interfere as little as possible.\n\ | |
942fd805 | 3275 | This is the same as setting `task pause', `exceptions', and\n\ |
1a966eab | 3276 | `signals' to the opposite value."), |
c906108c SS |
3277 | &setlist); |
3278 | ||
3279 | /* Commands to show information about the task's ports. */ | |
5f515954 | 3280 | add_info ("send-rights", info_send_rights_cmd, |
590042fc | 3281 | _("Show information about the task's send rights.")); |
5f515954 | 3282 | add_info ("receive-rights", info_recv_rights_cmd, |
590042fc | 3283 | _("Show information about the task's receive rights.")); |
5f515954 | 3284 | add_info ("port-rights", info_port_rights_cmd, |
590042fc | 3285 | _("Show information about the task's port rights.")); |
5f515954 | 3286 | add_info ("port-sets", info_port_sets_cmd, |
590042fc | 3287 | _("Show information about the task's port sets.")); |
5f515954 | 3288 | add_info ("dead-names", info_dead_names_cmd, |
590042fc | 3289 | _("Show information about the task's dead names.")); |
c906108c SS |
3290 | add_info_alias ("ports", "port-rights", 1); |
3291 | add_info_alias ("port", "port-rights", 1); | |
3292 | add_info_alias ("psets", "port-sets", 1); | |
3293 | } | |
c906108c | 3294 | |
942fd805 | 3295 | \f |
c906108c | 3296 | static void |
5fed81ff | 3297 | set_thread_pause_cmd (const char *args, int from_tty) |
c906108c SS |
3298 | { |
3299 | struct proc *thread = cur_thread (); | |
3300 | int old_sc = thread->pause_sc; | |
d8734c88 | 3301 | |
c906108c SS |
3302 | thread->pause_sc = parse_bool_arg (args, "set thread pause"); |
3303 | if (old_sc == 0 && thread->pause_sc != 0 && thread->inf->pause_sc == 0) | |
3304 | /* If the task is currently unsuspended, immediately suspend it, | |
3305 | otherwise wait until the next time it gets control. */ | |
14a8ad62 | 3306 | gnu_target->inf_suspend (thread->inf); |
c906108c SS |
3307 | } |
3308 | ||
3309 | static void | |
5fed81ff | 3310 | show_thread_pause_cmd (const char *args, int from_tty) |
c906108c SS |
3311 | { |
3312 | struct proc *thread = cur_thread (); | |
3313 | int sc = thread->pause_sc; | |
d8734c88 | 3314 | |
c906108c SS |
3315 | check_empty (args, "show task pause"); |
3316 | printf_unfiltered ("Thread %s %s suspended while gdb has control%s.\n", | |
3317 | proc_string (thread), | |
3318 | sc ? "is" : "isn't", | |
942fd805 | 3319 | !sc && thread->inf->pause_sc ? " (but the task is)" : ""); |
c906108c SS |
3320 | } |
3321 | ||
3322 | static void | |
5fed81ff | 3323 | set_thread_run_cmd (const char *args, int from_tty) |
c906108c SS |
3324 | { |
3325 | struct proc *thread = cur_thread (); | |
d8734c88 | 3326 | |
c906108c SS |
3327 | thread->run_sc = parse_bool_arg (args, "set thread run") ? 0 : 1; |
3328 | } | |
3329 | ||
3330 | static void | |
5fed81ff | 3331 | show_thread_run_cmd (const char *args, int from_tty) |
c906108c SS |
3332 | { |
3333 | struct proc *thread = cur_thread (); | |
d8734c88 | 3334 | |
c906108c SS |
3335 | check_empty (args, "show thread run"); |
3336 | printf_unfiltered ("Thread %s %s allowed to run.", | |
3337 | proc_string (thread), | |
3338 | thread->run_sc == 0 ? "is" : "isn't"); | |
3339 | } | |
3340 | ||
3341 | static void | |
5fed81ff | 3342 | set_thread_detach_sc_cmd (const char *args, int from_tty) |
c906108c | 3343 | { |
942fd805 MK |
3344 | cur_thread ()->detach_sc = parse_int_arg (args, |
3345 | "set thread detach-suspend-count"); | |
c906108c SS |
3346 | } |
3347 | ||
3348 | static void | |
5fed81ff | 3349 | show_thread_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
3350 | { |
3351 | struct proc *thread = cur_thread (); | |
d8734c88 | 3352 | |
c906108c | 3353 | check_empty (args, "show thread detach-suspend-count"); |
942fd805 MK |
3354 | printf_unfiltered ("Thread %s will be left with a suspend count" |
3355 | " of %d when detaching.\n", | |
c906108c SS |
3356 | proc_string (thread), |
3357 | thread->detach_sc); | |
3358 | } | |
3359 | ||
3360 | static void | |
5fed81ff | 3361 | set_thread_exc_port_cmd (const char *args, int from_tty) |
c906108c SS |
3362 | { |
3363 | struct proc *thread = cur_thread (); | |
d8734c88 | 3364 | |
c906108c | 3365 | if (!args) |
8a3fe4f8 | 3366 | error (_("No argument to \"set thread exception-port\" command.")); |
14a8ad62 | 3367 | gnu_target->steal_exc_port (thread, parse_and_eval_address (args)); |
c906108c SS |
3368 | } |
3369 | ||
3370 | #if 0 | |
3371 | static void | |
3372 | show_thread_cmd (char *args, int from_tty) | |
3373 | { | |
3374 | struct proc *thread = cur_thread (); | |
d8734c88 | 3375 | |
c906108c SS |
3376 | check_empty (args, "show thread"); |
3377 | show_thread_run_cmd (0, from_tty); | |
3378 | show_thread_pause_cmd (0, from_tty); | |
3379 | if (thread->detach_sc != 0) | |
3380 | show_thread_detach_sc_cmd (0, from_tty); | |
3381 | } | |
3382 | #endif | |
3383 | ||
3384 | static void | |
5fed81ff | 3385 | thread_takeover_sc_cmd (const char *args, int from_tty) |
c906108c SS |
3386 | { |
3387 | struct proc *thread = cur_thread (); | |
d8734c88 | 3388 | |
c906108c SS |
3389 | thread_basic_info_data_t _info; |
3390 | thread_basic_info_t info = &_info; | |
3391 | mach_msg_type_number_t info_len = THREAD_BASIC_INFO_COUNT; | |
cabb5f06 TS |
3392 | kern_return_t err |
3393 | = mach_thread_info (thread->port, THREAD_BASIC_INFO, | |
3394 | (int *) &info, &info_len); | |
c906108c | 3395 | if (err) |
8a3fe4f8 | 3396 | error (("%s."), safe_strerror (err)); |
c906108c SS |
3397 | thread->sc = info->suspend_count; |
3398 | if (from_tty) | |
3399 | printf_unfiltered ("Suspend count was %d.\n", thread->sc); | |
3400 | if (info != &_info) | |
942fd805 MK |
3401 | vm_deallocate (mach_task_self (), (vm_address_t) info, |
3402 | info_len * sizeof (int)); | |
c906108c SS |
3403 | } |
3404 | ||
942fd805 MK |
3405 | \f |
3406 | static void | |
3407 | add_thread_commands (void) | |
c906108c SS |
3408 | { |
3409 | add_prefix_cmd ("thread", no_class, set_thread_cmd, | |
1bedd215 | 3410 | _("Command prefix for setting thread properties."), |
c906108c SS |
3411 | &set_thread_cmd_list, "set thread ", 0, &setlist); |
3412 | add_prefix_cmd ("default", no_class, show_thread_cmd, | |
1bedd215 | 3413 | _("Command prefix for setting default thread properties."), |
c906108c SS |
3414 | &set_thread_default_cmd_list, "set thread default ", 0, |
3415 | &set_thread_cmd_list); | |
3416 | add_prefix_cmd ("thread", no_class, set_thread_default_cmd, | |
1bedd215 | 3417 | _("Command prefix for showing thread properties."), |
c906108c SS |
3418 | &show_thread_cmd_list, "show thread ", 0, &showlist); |
3419 | add_prefix_cmd ("default", no_class, show_thread_default_cmd, | |
1bedd215 | 3420 | _("Command prefix for showing default thread properties."), |
c906108c SS |
3421 | &show_thread_default_cmd_list, "show thread default ", 0, |
3422 | &show_thread_cmd_list); | |
3423 | ||
1a966eab AC |
3424 | add_cmd ("pause", class_run, set_thread_pause_cmd, _("\ |
3425 | Set whether the current thread is suspended while gdb has control.\n\ | |
942fd805 MK |
3426 | A value of \"on\" takes effect immediately, otherwise nothing happens\n\ |
3427 | until the next time the program is continued. This property normally\n\ | |
3428 | has no effect because the whole task is suspended, however, that may\n\ | |
3429 | be disabled with \"set task pause off\".\n\ | |
1a966eab | 3430 | The default value is \"off\"."), |
c906108c | 3431 | &set_thread_cmd_list); |
1a966eab AC |
3432 | add_cmd ("pause", no_class, show_thread_pause_cmd, _("\ |
3433 | Show whether the current thread is suspended while gdb has control."), | |
c906108c SS |
3434 | &show_thread_cmd_list); |
3435 | ||
3436 | add_cmd ("run", class_run, set_thread_run_cmd, | |
1a966eab | 3437 | _("Set whether the current thread is allowed to run."), |
c906108c SS |
3438 | &set_thread_cmd_list); |
3439 | add_cmd ("run", no_class, show_thread_run_cmd, | |
1a966eab | 3440 | _("Show whether the current thread is allowed to run."), |
c906108c SS |
3441 | &show_thread_cmd_list); |
3442 | ||
1a966eab AC |
3443 | add_cmd ("detach-suspend-count", class_run, set_thread_detach_sc_cmd, _("\ |
3444 | Set the suspend count will leave on the thread when detaching.\n\ | |
942fd805 | 3445 | Note that this is relative to suspend count when gdb noticed the thread;\n\ |
1a966eab | 3446 | use the `thread takeover-suspend-count' to force it to an absolute value."), |
c906108c | 3447 | &set_thread_cmd_list); |
1a966eab AC |
3448 | add_cmd ("detach-suspend-count", no_class, show_thread_detach_sc_cmd, _("\ |
3449 | Show the suspend count will leave on the thread when detaching.\n\ | |
942fd805 | 3450 | Note that this is relative to suspend count when gdb noticed the thread;\n\ |
1a966eab | 3451 | use the `thread takeover-suspend-count' to force it to an absolute value."), |
c906108c SS |
3452 | &show_thread_cmd_list); |
3453 | ||
1a966eab AC |
3454 | add_cmd ("exception-port", no_class, set_thread_exc_port_cmd, _("\ |
3455 | Set the thread exception port to which we forward exceptions.\n\ | |
942fd805 | 3456 | This overrides the task exception port.\n\ |
1a966eab | 3457 | The argument should be the value of the send right in the task."), |
c906108c SS |
3458 | &set_thread_cmd_list); |
3459 | add_alias_cmd ("excp", "exception-port", no_class, 1, &set_thread_cmd_list); | |
942fd805 MK |
3460 | add_alias_cmd ("exc-port", "exception-port", no_class, 1, |
3461 | &set_thread_cmd_list); | |
c906108c | 3462 | |
1a966eab AC |
3463 | add_cmd ("takeover-suspend-count", no_class, thread_takeover_sc_cmd, _("\ |
3464 | Force the threads absolute suspend-count to be gdb's.\n\ | |
942fd805 | 3465 | Prior to giving this command, gdb's thread suspend-counts are relative\n\ |
1a966eab | 3466 | to the thread's initial suspend-count when gdb notices the threads."), |
c906108c SS |
3467 | &thread_cmd_list); |
3468 | } | |
942fd805 | 3469 | |
6c265988 | 3470 | void _initialize_gnu_nat (); |
c906108c | 3471 | void |
6c265988 | 3472 | _initialize_gnu_nat () |
c906108c SS |
3473 | { |
3474 | proc_server = getproc (); | |
942fd805 | 3475 | |
c906108c SS |
3476 | add_task_commands (); |
3477 | add_thread_commands (); | |
cbe54154 PA |
3478 | add_setshow_boolean_cmd ("gnu-nat", class_maintenance, |
3479 | &gnu_debug_flag, | |
3480 | _("Set debugging output for the gnu backend."), | |
3481 | _("Show debugging output for the gnu backend."), | |
3482 | NULL, | |
3483 | NULL, | |
3484 | NULL, | |
3485 | &setdebuglist, | |
3486 | &showdebuglist); | |
c906108c SS |
3487 | } |
3488 | \f | |
3489 | #ifdef FLUSH_INFERIOR_CACHE | |
3490 | ||
3491 | /* When over-writing code on some machines the I-Cache must be flushed | |
3492 | explicitly, because it is not kept coherent by the lazy hardware. | |
3493 | This definitely includes breakpoints, for instance, or else we | |
0963b4bd | 3494 | end up looping in mysterious Bpt traps. */ |
c906108c SS |
3495 | |
3496 | void | |
fba45db2 | 3497 | flush_inferior_icache (CORE_ADDR pc, int amount) |
c906108c SS |
3498 | { |
3499 | vm_machine_attribute_val_t flush = MATTR_VAL_ICACHE_FLUSH; | |
0947023d | 3500 | kern_return_t ret; |
c5aa993b | 3501 | |
c289427b | 3502 | ret = vm_machine_attribute (gnu_current_inf->task->port, |
c906108c SS |
3503 | pc, |
3504 | amount, | |
3505 | MATTR_CACHE, | |
3506 | &flush); | |
3507 | if (ret != KERN_SUCCESS) | |
8a3fe4f8 | 3508 | warning (_("Error flushing inferior's cache : %s"), safe_strerror (ret)); |
c906108c | 3509 | } |
c5aa993b | 3510 | #endif /* FLUSH_INFERIOR_CACHE */ |