Commit | Line | Data |
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da59e081 | 1 | /* Interface GDB to the GNU Hurd. |
3666a048 | 2 | Copyright (C) 1992-2021 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 | 34 | #include <mach/vm_attributes.h> |
dca11eb8 | 35 | #include <mach/vm_param.h> |
c906108c | 36 | |
942fd805 MK |
37 | #include <hurd.h> |
38 | #include <hurd/interrupt.h> | |
c906108c SS |
39 | #include <hurd/msg.h> |
40 | #include <hurd/msg_request.h> | |
942fd805 | 41 | #include <hurd/process.h> |
96ffcb62 AS |
42 | /* Defined in <hurd/process.h>, but we need forward declarations from |
43 | <hurd/process_request.h> as well. */ | |
44 | #undef _process_user_ | |
942fd805 | 45 | #include <hurd/process_request.h> |
c906108c | 46 | #include <hurd/signal.h> |
c906108c SS |
47 | #include <hurd/sigpreempt.h> |
48 | ||
49 | #include <portinfo.h> | |
21389b7f TS |
50 | } |
51 | ||
52 | #include "defs.h" | |
53 | ||
54 | #include <ctype.h> | |
55 | #include <limits.h> | |
56 | #include <setjmp.h> | |
57 | #include <signal.h> | |
58 | #include <sys/ptrace.h> | |
9c4ac400 ST |
59 | #include <elf.h> |
60 | #include <link.h> | |
c906108c | 61 | |
c906108c SS |
62 | #include "inferior.h" |
63 | #include "symtab.h" | |
64 | #include "value.h" | |
65 | #include "language.h" | |
66 | #include "target.h" | |
268a13a5 | 67 | #include "gdbsupport/gdb_wait.h" |
366f550a | 68 | #include "gdbarch.h" |
c906108c SS |
69 | #include "gdbcmd.h" |
70 | #include "gdbcore.h" | |
942fd805 | 71 | #include "gdbthread.h" |
3b3e6bee | 72 | #include "gdb_obstack.h" |
c3187fa5 | 73 | #include "tid-parse.h" |
6c6ef69f | 74 | #include "nat/fork-inferior.h" |
c906108c | 75 | |
b4d1e8c7 | 76 | #include "inf-child.h" |
c906108c | 77 | |
21389b7f TS |
78 | /* MIG stubs are not yet ready for C++ compilation. */ |
79 | extern "C" | |
80 | { | |
c906108c SS |
81 | #include "exc_request_S.h" |
82 | #include "notify_S.h" | |
83 | #include "process_reply_S.h" | |
84 | #include "msg_reply_S.h" | |
85 | #include "exc_request_U.h" | |
86 | #include "msg_U.h" | |
b7ed9f3d ST |
87 | |
88 | #include "gnu-nat-mig.h" | |
21389b7f | 89 | } |
c906108c | 90 | |
53dff92c ST |
91 | struct gnu_nat_target *gnu_target; |
92 | ||
c906108c SS |
93 | static process_t proc_server = MACH_PORT_NULL; |
94 | ||
95 | /* If we've sent a proc_wait_request to the proc server, the pid of the | |
96 | process we asked about. We can only ever have one outstanding. */ | |
97 | int proc_wait_pid = 0; | |
98 | ||
99 | /* The number of wait requests we've sent, and expect replies from. */ | |
100 | int proc_waits_pending = 0; | |
101 | ||
491144b5 | 102 | bool gnu_debug_flag = false; |
c906108c SS |
103 | |
104 | /* Forward decls */ | |
105 | ||
f04a82ef | 106 | static struct inf *make_inf (); |
c906108c SS |
107 | |
108 | #define inf_debug(_inf, msg, args...) \ | |
109 | do { struct inf *__inf = (_inf); \ | |
a74ce742 PM |
110 | debug ("{inf %d %s}: " msg, __inf->pid, \ |
111 | host_address_to_string (__inf) , ##args); } while (0) | |
c906108c | 112 | |
c906108c SS |
113 | /* Evaluate RPC_EXPR in a scope with the variables MSGPORT and REFPORT bound |
114 | to INF's msg port and task port respectively. If it has no msg port, | |
115 | EIEIO is returned. INF must refer to a running process! */ | |
116 | #define INF_MSGPORT_RPC(inf, rpc_expr) \ | |
117 | HURD_MSGPORT_RPC (proc_getmsgport (proc_server, inf->pid, &msgport), \ | |
118 | (refport = inf->task->port, 0), 0, \ | |
119 | msgport ? (rpc_expr) : EIEIO) | |
120 | ||
121 | /* Like INF_MSGPORT_RPC, but will also resume the signal thread to ensure | |
122 | there's someone around to deal with the RPC (and resuspend things | |
123 | afterwards). This effects INF's threads' resume_sc count. */ | |
124 | #define INF_RESUME_MSGPORT_RPC(inf, rpc_expr) \ | |
125 | (inf_set_threads_resume_sc_for_signal_thread (inf) \ | |
0947023d | 126 | ? ({ kern_return_t __e; \ |
c906108c SS |
127 | inf_resume (inf); \ |
128 | __e = INF_MSGPORT_RPC (inf, rpc_expr); \ | |
129 | inf_suspend (inf); \ | |
130 | __e; }) \ | |
131 | : EIEIO) | |
132 | ||
c906108c SS |
133 | \f |
134 | /* The state passed by an exception message. */ | |
135 | struct exc_state | |
c5aa993b | 136 | { |
0963b4bd | 137 | int exception; /* The exception code. */ |
c5aa993b | 138 | int code, subcode; |
0963b4bd MS |
139 | mach_port_t handler; /* The real exception port to handle this. */ |
140 | mach_port_t reply; /* The reply port from the exception call. */ | |
c5aa993b | 141 | }; |
c906108c | 142 | |
0963b4bd | 143 | /* The results of the last wait an inf did. */ |
c906108c | 144 | struct inf_wait |
c5aa993b JM |
145 | { |
146 | struct target_waitstatus status; /* The status returned to gdb. */ | |
0963b4bd | 147 | struct exc_state exc; /* The exception that caused us to return. */ |
c5aa993b JM |
148 | struct proc *thread; /* The thread in question. */ |
149 | int suppress; /* Something trivial happened. */ | |
150 | }; | |
c906108c SS |
151 | |
152 | /* The state of an inferior. */ | |
153 | struct inf | |
c5aa993b JM |
154 | { |
155 | /* Fields describing the current inferior. */ | |
c906108c | 156 | |
c5aa993b JM |
157 | struct proc *task; /* The mach task. */ |
158 | struct proc *threads; /* A linked list of all threads in TASK. */ | |
c906108c | 159 | |
0963b4bd MS |
160 | /* True if THREADS needn't be validated by querying the task. We |
161 | assume that we and the task in question are the only ones | |
162 | frobbing the thread list, so as long as we don't let any code | |
163 | run, we don't have to worry about THREADS changing. */ | |
c5aa993b | 164 | int threads_up_to_date; |
c906108c | 165 | |
0963b4bd | 166 | pid_t pid; /* The real system PID. */ |
c906108c | 167 | |
c5aa993b | 168 | struct inf_wait wait; /* What to return from target_wait. */ |
c906108c | 169 | |
0963b4bd MS |
170 | /* One thread proc in INF may be in `single-stepping mode'. This |
171 | is it. */ | |
c5aa993b | 172 | struct proc *step_thread; |
c906108c | 173 | |
c5aa993b JM |
174 | /* The thread we think is the signal thread. */ |
175 | struct proc *signal_thread; | |
c906108c | 176 | |
c5aa993b | 177 | mach_port_t event_port; /* Where we receive various msgs. */ |
c906108c | 178 | |
c5aa993b JM |
179 | /* True if we think at least one thread in the inferior could currently be |
180 | running. */ | |
181 | unsigned int running:1; | |
c906108c | 182 | |
c5aa993b JM |
183 | /* True if the process has stopped (in the proc server sense). Note that |
184 | since a proc server `stop' leaves the signal thread running, the inf can | |
185 | be RUNNING && STOPPED... */ | |
186 | unsigned int stopped:1; | |
cce74817 | 187 | |
c5aa993b JM |
188 | /* True if the inferior has no message port. */ |
189 | unsigned int nomsg:1; | |
c906108c | 190 | |
c5aa993b JM |
191 | /* True if the inferior is traced. */ |
192 | unsigned int traced:1; | |
c906108c | 193 | |
c5aa993b JM |
194 | /* True if we shouldn't try waiting for the inferior, usually because we |
195 | can't for some reason. */ | |
196 | unsigned int no_wait:1; | |
c906108c | 197 | |
c5aa993b | 198 | /* When starting a new inferior, we don't try to validate threads until all |
c82f56d9 | 199 | the proper execs have been done, which this flag states we still |
c5aa993b | 200 | expect to happen. */ |
c82f56d9 | 201 | unsigned int pending_execs:1; |
c906108c | 202 | |
0963b4bd | 203 | /* Fields describing global state. */ |
c906108c | 204 | |
c5aa993b JM |
205 | /* The task suspend count used when gdb has control. This is normally 1 to |
206 | make things easier for us, but sometimes (like when attaching to vital | |
207 | system servers) it may be desirable to let the task continue to run | |
208 | (pausing individual threads as necessary). */ | |
209 | int pause_sc; | |
c906108c | 210 | |
c5aa993b JM |
211 | /* The task suspend count left when detaching from a task. */ |
212 | int detach_sc; | |
c906108c | 213 | |
c5aa993b JM |
214 | /* The initial values used for the run_sc and pause_sc of newly discovered |
215 | threads -- see the definition of those fields in struct proc. */ | |
216 | int default_thread_run_sc; | |
217 | int default_thread_pause_sc; | |
218 | int default_thread_detach_sc; | |
c906108c | 219 | |
c5aa993b JM |
220 | /* True if the process should be traced when started/attached. Newly |
221 | started processes *must* be traced at first to exec them properly, but | |
222 | if this is false, tracing is turned off as soon it has done so. */ | |
223 | int want_signals; | |
c906108c | 224 | |
c5aa993b JM |
225 | /* True if exceptions from the inferior process should be trapped. This |
226 | must be on to use breakpoints. */ | |
227 | int want_exceptions; | |
228 | }; | |
c906108c SS |
229 | |
230 | ||
c5aa993b JM |
231 | int |
232 | __proc_pid (struct proc *proc) | |
c906108c SS |
233 | { |
234 | return proc->inf->pid; | |
235 | } | |
942fd805 | 236 | |
c906108c SS |
237 | \f |
238 | /* Update PROC's real suspend count to match it's desired one. Returns true | |
239 | if we think PROC is now in a runnable state. */ | |
240 | int | |
14a8ad62 | 241 | gnu_nat_target::proc_update_sc (struct proc *proc) |
c906108c SS |
242 | { |
243 | int running; | |
c5aa993b | 244 | int err = 0; |
c906108c SS |
245 | int delta = proc->sc - proc->cur_sc; |
246 | ||
247 | if (delta) | |
248 | proc_debug (proc, "sc: %d --> %d", proc->cur_sc, proc->sc); | |
249 | ||
250 | if (proc->sc == 0 && proc->state_changed) | |
0963b4bd | 251 | /* Since PROC may start running, we must write back any state changes. */ |
c906108c | 252 | { |
bf62e5b4 | 253 | gdb_assert (proc_is_thread (proc)); |
c906108c SS |
254 | proc_debug (proc, "storing back changed thread state"); |
255 | err = thread_set_state (proc->port, THREAD_STATE_FLAVOR, | |
f75c77fc | 256 | (thread_state_t) &proc->state, THREAD_STATE_SIZE); |
c5aa993b | 257 | if (!err) |
c906108c SS |
258 | proc->state_changed = 0; |
259 | } | |
260 | ||
261 | if (delta > 0) | |
942fd805 MK |
262 | { |
263 | while (delta-- > 0 && !err) | |
264 | { | |
265 | if (proc_is_task (proc)) | |
266 | err = task_suspend (proc->port); | |
267 | else | |
268 | err = thread_suspend (proc->port); | |
269 | } | |
270 | } | |
c906108c | 271 | else |
942fd805 MK |
272 | { |
273 | while (delta++ < 0 && !err) | |
274 | { | |
275 | if (proc_is_task (proc)) | |
276 | err = task_resume (proc->port); | |
277 | else | |
278 | err = thread_resume (proc->port); | |
279 | } | |
280 | } | |
c5aa993b | 281 | if (!err) |
c906108c SS |
282 | proc->cur_sc = proc->sc; |
283 | ||
284 | /* If we got an error, then the task/thread has disappeared. */ | |
285 | running = !err && proc->sc == 0; | |
286 | ||
287 | proc_debug (proc, "is %s", err ? "dead" : running ? "running" : "suspended"); | |
288 | if (err) | |
dc672865 | 289 | proc_debug (proc, "err = %s", safe_strerror (err)); |
c906108c SS |
290 | |
291 | if (running) | |
292 | { | |
293 | proc->aborted = 0; | |
294 | proc->state_valid = proc->state_changed = 0; | |
295 | proc->fetched_regs = 0; | |
296 | } | |
297 | ||
298 | return running; | |
299 | } | |
942fd805 | 300 | |
c906108c SS |
301 | \f |
302 | /* Thread_abort is called on PROC if needed. PROC must be a thread proc. | |
303 | If PROC is deemed `precious', then nothing is done unless FORCE is true. | |
304 | In particular, a thread is precious if it's running (in which case forcing | |
305 | it includes suspending it first), or if it has an exception pending. */ | |
306 | void | |
14a8ad62 | 307 | gnu_nat_target::proc_abort (struct proc *proc, int force) |
c906108c | 308 | { |
bf62e5b4 | 309 | gdb_assert (proc_is_thread (proc)); |
c906108c | 310 | |
c5aa993b | 311 | if (!proc->aborted) |
c906108c SS |
312 | { |
313 | struct inf *inf = proc->inf; | |
314 | int running = (proc->cur_sc == 0 && inf->task->cur_sc == 0); | |
315 | ||
316 | if (running && force) | |
317 | { | |
318 | proc->sc = 1; | |
319 | inf_update_suspends (proc->inf); | |
320 | running = 0; | |
8a3fe4f8 | 321 | warning (_("Stopped %s."), proc_string (proc)); |
c906108c SS |
322 | } |
323 | else if (proc == inf->wait.thread && inf->wait.exc.reply && !force) | |
324 | /* An exception is pending on PROC, which don't mess with. */ | |
325 | running = 1; | |
326 | ||
c5aa993b | 327 | if (!running) |
c906108c SS |
328 | /* We only abort the thread if it's not actually running. */ |
329 | { | |
330 | thread_abort (proc->port); | |
331 | proc_debug (proc, "aborted"); | |
332 | proc->aborted = 1; | |
333 | } | |
334 | else | |
335 | proc_debug (proc, "not aborting"); | |
336 | } | |
337 | } | |
338 | ||
339 | /* Make sure that the state field in PROC is up to date, and return a pointer | |
340 | to it, or 0 if something is wrong. If WILL_MODIFY is true, makes sure | |
341 | that the thread is stopped and aborted first, and sets the state_changed | |
342 | field in PROC to true. */ | |
343 | thread_state_t | |
14a8ad62 | 344 | gnu_nat_target::proc_get_state (struct proc *proc, int will_modify) |
c906108c SS |
345 | { |
346 | int was_aborted = proc->aborted; | |
347 | ||
348 | proc_debug (proc, "updating state info%s", | |
349 | will_modify ? " (with intention to modify)" : ""); | |
350 | ||
351 | proc_abort (proc, will_modify); | |
352 | ||
c5aa993b | 353 | if (!was_aborted && proc->aborted) |
c906108c SS |
354 | /* PROC's state may have changed since we last fetched it. */ |
355 | proc->state_valid = 0; | |
356 | ||
c5aa993b | 357 | if (!proc->state_valid) |
c906108c SS |
358 | { |
359 | mach_msg_type_number_t state_size = THREAD_STATE_SIZE; | |
0947023d | 360 | kern_return_t err = |
d8734c88 MS |
361 | thread_get_state (proc->port, THREAD_STATE_FLAVOR, |
362 | (thread_state_t) &proc->state, &state_size); | |
363 | ||
c906108c SS |
364 | proc_debug (proc, "getting thread state"); |
365 | proc->state_valid = !err; | |
366 | } | |
367 | ||
368 | if (proc->state_valid) | |
369 | { | |
370 | if (will_modify) | |
371 | proc->state_changed = 1; | |
f75c77fc | 372 | return (thread_state_t) &proc->state; |
c906108c SS |
373 | } |
374 | else | |
375 | return 0; | |
376 | } | |
942fd805 | 377 | |
c906108c SS |
378 | \f |
379 | /* Set PORT to PROC's exception port. */ | |
0947023d | 380 | kern_return_t |
14a8ad62 | 381 | gnu_nat_target::proc_get_exception_port (struct proc * proc, mach_port_t * port) |
c906108c SS |
382 | { |
383 | if (proc_is_task (proc)) | |
384 | return task_get_exception_port (proc->port, port); | |
385 | else | |
386 | return thread_get_exception_port (proc->port, port); | |
387 | } | |
388 | ||
389 | /* Set PROC's exception port to PORT. */ | |
0947023d | 390 | kern_return_t |
14a8ad62 | 391 | gnu_nat_target::proc_set_exception_port (struct proc * proc, mach_port_t port) |
c906108c | 392 | { |
a9a758e3 | 393 | proc_debug (proc, "setting exception port: %lu", port); |
c906108c SS |
394 | if (proc_is_task (proc)) |
395 | return task_set_exception_port (proc->port, port); | |
396 | else | |
397 | return thread_set_exception_port (proc->port, port); | |
398 | } | |
399 | ||
400 | /* Get PROC's exception port, cleaning up a bit if proc has died. */ | |
14a8ad62 ST |
401 | mach_port_t |
402 | gnu_nat_target::_proc_get_exc_port (struct proc *proc) | |
c906108c SS |
403 | { |
404 | mach_port_t exc_port; | |
0947023d | 405 | kern_return_t err = proc_get_exception_port (proc, &exc_port); |
c906108c SS |
406 | |
407 | if (err) | |
408 | /* PROC must be dead. */ | |
409 | { | |
410 | if (proc->exc_port) | |
411 | mach_port_deallocate (mach_task_self (), proc->exc_port); | |
412 | proc->exc_port = MACH_PORT_NULL; | |
413 | if (proc->saved_exc_port) | |
414 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
415 | proc->saved_exc_port = MACH_PORT_NULL; | |
416 | } | |
417 | ||
418 | return exc_port; | |
419 | } | |
420 | ||
0963b4bd MS |
421 | /* Replace PROC's exception port with EXC_PORT, unless it's already |
422 | been done. Stash away any existing exception port so we can | |
423 | restore it later. */ | |
c906108c | 424 | void |
14a8ad62 | 425 | gnu_nat_target::proc_steal_exc_port (struct proc *proc, mach_port_t exc_port) |
c906108c SS |
426 | { |
427 | mach_port_t cur_exc_port = _proc_get_exc_port (proc); | |
428 | ||
429 | if (cur_exc_port) | |
430 | { | |
0947023d | 431 | kern_return_t err = 0; |
c906108c | 432 | |
a9a758e3 | 433 | proc_debug (proc, "inserting exception port: %lu", exc_port); |
c906108c SS |
434 | |
435 | if (cur_exc_port != exc_port) | |
436 | /* Put in our exception port. */ | |
437 | err = proc_set_exception_port (proc, exc_port); | |
438 | ||
439 | if (err || cur_exc_port == proc->exc_port) | |
440 | /* We previously set the exception port, and it's still set. So we | |
441 | just keep the old saved port which is what the proc set. */ | |
442 | { | |
443 | if (cur_exc_port) | |
444 | mach_port_deallocate (mach_task_self (), cur_exc_port); | |
445 | } | |
446 | else | |
0963b4bd | 447 | /* Keep a copy of PROC's old exception port so it can be restored. */ |
c906108c SS |
448 | { |
449 | if (proc->saved_exc_port) | |
450 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
451 | proc->saved_exc_port = cur_exc_port; | |
452 | } | |
453 | ||
a9a758e3 | 454 | proc_debug (proc, "saved exception port: %lu", proc->saved_exc_port); |
c906108c SS |
455 | |
456 | if (!err) | |
457 | proc->exc_port = exc_port; | |
458 | else | |
8a3fe4f8 | 459 | warning (_("Error setting exception port for %s: %s"), |
dc672865 | 460 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
461 | } |
462 | } | |
463 | ||
464 | /* If we previously replaced PROC's exception port, put back what we | |
465 | found there at the time, unless *our* exception port has since been | |
466 | overwritten, in which case who knows what's going on. */ | |
467 | void | |
14a8ad62 | 468 | gnu_nat_target::proc_restore_exc_port (struct proc *proc) |
c906108c SS |
469 | { |
470 | mach_port_t cur_exc_port = _proc_get_exc_port (proc); | |
471 | ||
472 | if (cur_exc_port) | |
473 | { | |
0947023d | 474 | kern_return_t err = 0; |
c906108c SS |
475 | |
476 | proc_debug (proc, "restoring real exception port"); | |
477 | ||
478 | if (proc->exc_port == cur_exc_port) | |
479 | /* Our's is still there. */ | |
480 | err = proc_set_exception_port (proc, proc->saved_exc_port); | |
481 | ||
482 | if (proc->saved_exc_port) | |
483 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
484 | proc->saved_exc_port = MACH_PORT_NULL; | |
485 | ||
486 | if (!err) | |
487 | proc->exc_port = MACH_PORT_NULL; | |
488 | else | |
8a3fe4f8 | 489 | warning (_("Error setting exception port for %s: %s"), |
dc672865 | 490 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
491 | } |
492 | } | |
942fd805 | 493 | |
c906108c SS |
494 | \f |
495 | /* Turns hardware tracing in PROC on or off when SET is true or false, | |
496 | respectively. Returns true on success. */ | |
497 | int | |
14a8ad62 | 498 | gnu_nat_target::proc_trace (struct proc *proc, int set) |
c906108c SS |
499 | { |
500 | thread_state_t state = proc_get_state (proc, 1); | |
501 | ||
c5aa993b | 502 | if (!state) |
0963b4bd | 503 | return 0; /* The thread must be dead. */ |
c906108c SS |
504 | |
505 | proc_debug (proc, "tracing %s", set ? "on" : "off"); | |
c5aa993b | 506 | |
c906108c SS |
507 | if (set) |
508 | { | |
509 | /* XXX We don't get the exception unless the thread has its own | |
dda83cd7 | 510 | exception port???? */ |
c906108c SS |
511 | if (proc->exc_port == MACH_PORT_NULL) |
512 | proc_steal_exc_port (proc, proc->inf->event_port); | |
513 | THREAD_STATE_SET_TRACED (state); | |
514 | } | |
515 | else | |
516 | THREAD_STATE_CLEAR_TRACED (state); | |
517 | ||
518 | return 1; | |
519 | } | |
942fd805 | 520 | |
c906108c SS |
521 | \f |
522 | /* A variable from which to assign new TIDs. */ | |
523 | static int next_thread_id = 1; | |
524 | ||
525 | /* Returns a new proc structure with the given fields. Also adds a | |
526 | notification for PORT becoming dead to be sent to INF's notify port. */ | |
527 | struct proc * | |
14a8ad62 | 528 | gnu_nat_target::make_proc (struct inf *inf, mach_port_t port, int tid) |
c906108c | 529 | { |
0947023d | 530 | kern_return_t err; |
c906108c | 531 | mach_port_t prev_port = MACH_PORT_NULL; |
8d749320 | 532 | struct proc *proc = XNEW (struct proc); |
c906108c SS |
533 | |
534 | proc->port = port; | |
535 | proc->tid = tid; | |
536 | proc->inf = inf; | |
537 | proc->next = 0; | |
538 | proc->saved_exc_port = MACH_PORT_NULL; | |
539 | proc->exc_port = MACH_PORT_NULL; | |
540 | ||
541 | proc->sc = 0; | |
542 | proc->cur_sc = 0; | |
543 | ||
544 | /* Note that these are all the values for threads; the task simply uses the | |
545 | corresponding field in INF directly. */ | |
546 | proc->run_sc = inf->default_thread_run_sc; | |
547 | proc->pause_sc = inf->default_thread_pause_sc; | |
548 | proc->detach_sc = inf->default_thread_detach_sc; | |
549 | proc->resume_sc = proc->run_sc; | |
550 | ||
551 | proc->aborted = 0; | |
552 | proc->dead = 0; | |
553 | proc->state_valid = 0; | |
554 | proc->state_changed = 0; | |
555 | ||
556 | proc_debug (proc, "is new"); | |
557 | ||
558 | /* Get notified when things die. */ | |
559 | err = | |
c5aa993b | 560 | mach_port_request_notification (mach_task_self (), port, |
c906108c SS |
561 | MACH_NOTIFY_DEAD_NAME, 1, |
562 | inf->event_port, | |
563 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
564 | &prev_port); | |
565 | if (err) | |
a9a758e3 | 566 | warning (_("Couldn't request notification for port %lu: %s"), |
dc672865 | 567 | port, safe_strerror (err)); |
c906108c SS |
568 | else |
569 | { | |
a9a758e3 | 570 | proc_debug (proc, "notifications to: %lu", inf->event_port); |
c906108c SS |
571 | if (prev_port != MACH_PORT_NULL) |
572 | mach_port_deallocate (mach_task_self (), prev_port); | |
573 | } | |
574 | ||
575 | if (inf->want_exceptions) | |
942fd805 MK |
576 | { |
577 | if (proc_is_task (proc)) | |
578 | /* Make the task exception port point to us. */ | |
579 | proc_steal_exc_port (proc, inf->event_port); | |
580 | else | |
581 | /* Just clear thread exception ports -- they default to the | |
dda83cd7 | 582 | task one. */ |
942fd805 MK |
583 | proc_steal_exc_port (proc, MACH_PORT_NULL); |
584 | } | |
c906108c SS |
585 | |
586 | return proc; | |
587 | } | |
588 | ||
589 | /* Frees PROC and any resources it uses, and returns the value of PROC's | |
590 | next field. */ | |
591 | struct proc * | |
14a8ad62 | 592 | gnu_nat_target::_proc_free (struct proc *proc) |
c906108c SS |
593 | { |
594 | struct inf *inf = proc->inf; | |
595 | struct proc *next = proc->next; | |
596 | ||
597 | proc_debug (proc, "freeing..."); | |
598 | ||
599 | if (proc == inf->step_thread) | |
600 | /* Turn off single stepping. */ | |
601 | inf_set_step_thread (inf, 0); | |
602 | if (proc == inf->wait.thread) | |
603 | inf_clear_wait (inf); | |
604 | if (proc == inf->signal_thread) | |
605 | inf->signal_thread = 0; | |
606 | ||
607 | if (proc->port != MACH_PORT_NULL) | |
608 | { | |
609 | if (proc->exc_port != MACH_PORT_NULL) | |
610 | /* Restore the original exception port. */ | |
611 | proc_restore_exc_port (proc); | |
612 | if (proc->cur_sc != 0) | |
613 | /* Resume the thread/task. */ | |
614 | { | |
615 | proc->sc = 0; | |
616 | proc_update_sc (proc); | |
617 | } | |
618 | mach_port_deallocate (mach_task_self (), proc->port); | |
619 | } | |
620 | ||
b8c9b27d | 621 | xfree (proc); |
c906108c SS |
622 | return next; |
623 | } | |
942fd805 | 624 | |
c906108c | 625 | \f |
f04a82ef | 626 | static struct inf * |
fba45db2 | 627 | make_inf (void) |
c906108c | 628 | { |
8d749320 | 629 | struct inf *inf = XNEW (struct inf); |
c906108c SS |
630 | |
631 | inf->task = 0; | |
632 | inf->threads = 0; | |
633 | inf->threads_up_to_date = 0; | |
634 | inf->pid = 0; | |
635 | inf->wait.status.kind = TARGET_WAITKIND_SPURIOUS; | |
636 | inf->wait.thread = 0; | |
637 | inf->wait.exc.handler = MACH_PORT_NULL; | |
638 | inf->wait.exc.reply = MACH_PORT_NULL; | |
639 | inf->step_thread = 0; | |
640 | inf->signal_thread = 0; | |
641 | inf->event_port = MACH_PORT_NULL; | |
c906108c | 642 | inf->running = 0; |
cce74817 JM |
643 | inf->stopped = 0; |
644 | inf->nomsg = 1; | |
c906108c SS |
645 | inf->traced = 0; |
646 | inf->no_wait = 0; | |
647 | inf->pending_execs = 0; | |
648 | inf->pause_sc = 1; | |
649 | inf->detach_sc = 0; | |
650 | inf->default_thread_run_sc = 0; | |
651 | inf->default_thread_pause_sc = 0; | |
652 | inf->default_thread_detach_sc = 0; | |
653 | inf->want_signals = 1; /* By default */ | |
654 | inf->want_exceptions = 1; /* By default */ | |
655 | ||
656 | return inf; | |
657 | } | |
658 | ||
942fd805 | 659 | /* Clear INF's target wait status. */ |
c906108c | 660 | void |
14a8ad62 | 661 | gnu_nat_target::inf_clear_wait (struct inf *inf) |
c906108c SS |
662 | { |
663 | inf_debug (inf, "clearing wait"); | |
664 | inf->wait.status.kind = TARGET_WAITKIND_SPURIOUS; | |
665 | inf->wait.thread = 0; | |
666 | inf->wait.suppress = 0; | |
667 | if (inf->wait.exc.handler != MACH_PORT_NULL) | |
668 | { | |
669 | mach_port_deallocate (mach_task_self (), inf->wait.exc.handler); | |
670 | inf->wait.exc.handler = MACH_PORT_NULL; | |
671 | } | |
672 | if (inf->wait.exc.reply != MACH_PORT_NULL) | |
673 | { | |
674 | mach_port_deallocate (mach_task_self (), inf->wait.exc.reply); | |
675 | inf->wait.exc.reply = MACH_PORT_NULL; | |
676 | } | |
677 | } | |
942fd805 | 678 | |
c906108c SS |
679 | \f |
680 | void | |
14a8ad62 | 681 | gnu_nat_target::inf_cleanup (struct inf *inf) |
c906108c SS |
682 | { |
683 | inf_debug (inf, "cleanup"); | |
684 | ||
685 | inf_clear_wait (inf); | |
686 | ||
687 | inf_set_pid (inf, -1); | |
688 | inf->pid = 0; | |
cce74817 JM |
689 | inf->running = 0; |
690 | inf->stopped = 0; | |
691 | inf->nomsg = 1; | |
c906108c SS |
692 | inf->traced = 0; |
693 | inf->no_wait = 0; | |
c906108c SS |
694 | inf->pending_execs = 0; |
695 | ||
696 | if (inf->event_port) | |
697 | { | |
698 | mach_port_destroy (mach_task_self (), inf->event_port); | |
699 | inf->event_port = MACH_PORT_NULL; | |
700 | } | |
701 | } | |
702 | ||
703 | void | |
14a8ad62 | 704 | gnu_nat_target::inf_startup (struct inf *inf, int pid) |
c906108c | 705 | { |
0947023d | 706 | kern_return_t err; |
c906108c SS |
707 | |
708 | inf_debug (inf, "startup: pid = %d", pid); | |
709 | ||
710 | inf_cleanup (inf); | |
711 | ||
712 | /* Make the port on which we receive all events. */ | |
713 | err = mach_port_allocate (mach_task_self (), | |
714 | MACH_PORT_RIGHT_RECEIVE, &inf->event_port); | |
715 | if (err) | |
8a3fe4f8 | 716 | error (_("Error allocating event port: %s"), safe_strerror (err)); |
c906108c SS |
717 | |
718 | /* Make a send right for it, so we can easily copy it for other people. */ | |
719 | mach_port_insert_right (mach_task_self (), inf->event_port, | |
720 | inf->event_port, MACH_MSG_TYPE_MAKE_SEND); | |
721 | inf_set_pid (inf, pid); | |
722 | } | |
942fd805 | 723 | |
c906108c | 724 | \f |
942fd805 | 725 | /* Close current process, if any, and attach INF to process PORT. */ |
c5aa993b | 726 | void |
14a8ad62 | 727 | gnu_nat_target::inf_set_pid (struct inf *inf, pid_t pid) |
c906108c SS |
728 | { |
729 | task_t task_port; | |
730 | struct proc *task = inf->task; | |
731 | ||
732 | inf_debug (inf, "setting pid: %d", pid); | |
733 | ||
734 | if (pid < 0) | |
735 | task_port = MACH_PORT_NULL; | |
736 | else | |
737 | { | |
0947023d | 738 | kern_return_t err = proc_pid2task (proc_server, pid, &task_port); |
d8734c88 | 739 | |
c906108c | 740 | if (err) |
0963b4bd MS |
741 | error (_("Error getting task for pid %d: %s"), |
742 | pid, safe_strerror (err)); | |
c906108c SS |
743 | } |
744 | ||
a9a758e3 | 745 | inf_debug (inf, "setting task: %lu", task_port); |
c906108c SS |
746 | |
747 | if (inf->pause_sc) | |
748 | task_suspend (task_port); | |
749 | ||
750 | if (task && task->port != task_port) | |
751 | { | |
752 | inf->task = 0; | |
0963b4bd MS |
753 | inf_validate_procs (inf); /* Trash all the threads. */ |
754 | _proc_free (task); /* And the task. */ | |
c906108c SS |
755 | } |
756 | ||
757 | if (task_port != MACH_PORT_NULL) | |
758 | { | |
759 | inf->task = make_proc (inf, task_port, PROC_TID_TASK); | |
760 | inf->threads_up_to_date = 0; | |
761 | } | |
762 | ||
763 | if (inf->task) | |
764 | { | |
765 | inf->pid = pid; | |
766 | if (inf->pause_sc) | |
942fd805 MK |
767 | /* Reflect task_suspend above. */ |
768 | inf->task->sc = inf->task->cur_sc = 1; | |
c906108c SS |
769 | } |
770 | else | |
771 | inf->pid = -1; | |
772 | } | |
942fd805 | 773 | |
c906108c | 774 | \f |
cce74817 JM |
775 | /* Validates INF's stopped, nomsg and traced field from the actual |
776 | proc server state. Note that the traced field is only updated from | |
777 | the proc server state if we do not have a message port. If we do | |
778 | have a message port we'd better look at the tracemask itself. */ | |
14a8ad62 ST |
779 | void |
780 | gnu_nat_target::inf_validate_procinfo (struct inf *inf) | |
c906108c SS |
781 | { |
782 | char *noise; | |
783 | mach_msg_type_number_t noise_len = 0; | |
784 | struct procinfo *pi; | |
785 | mach_msg_type_number_t pi_len = 0; | |
786 | int info_flags = 0; | |
0947023d | 787 | kern_return_t err = |
d8734c88 MS |
788 | proc_getprocinfo (proc_server, inf->pid, &info_flags, |
789 | (procinfo_t *) &pi, &pi_len, &noise, &noise_len); | |
c906108c | 790 | |
c5aa993b | 791 | if (!err) |
c906108c SS |
792 | { |
793 | inf->stopped = !!(pi->state & PI_STOPPED); | |
cce74817 JM |
794 | inf->nomsg = !!(pi->state & PI_NOMSG); |
795 | if (inf->nomsg) | |
796 | inf->traced = !!(pi->state & PI_TRACED); | |
a441dfbc ST |
797 | vm_deallocate (mach_task_self (), (vm_address_t) pi, |
798 | pi_len * sizeof (*(procinfo_t) 0)); | |
c906108c | 799 | if (noise_len > 0) |
c5aa993b | 800 | vm_deallocate (mach_task_self (), (vm_address_t) noise, noise_len); |
c906108c SS |
801 | } |
802 | } | |
803 | ||
f90b2b1d JK |
804 | /* Validates INF's task suspend count. If it's higher than we expect, |
805 | verify with the user before `stealing' the extra count. */ | |
14a8ad62 ST |
806 | void |
807 | gnu_nat_target::inf_validate_task_sc (struct inf *inf) | |
c906108c | 808 | { |
f90b2b1d JK |
809 | char *noise; |
810 | mach_msg_type_number_t noise_len = 0; | |
811 | struct procinfo *pi; | |
812 | mach_msg_type_number_t pi_len = 0; | |
813 | int info_flags = PI_FETCH_TASKINFO; | |
814 | int suspend_count = -1; | |
0947023d | 815 | kern_return_t err; |
c906108c | 816 | |
f90b2b1d JK |
817 | retry: |
818 | err = proc_getprocinfo (proc_server, inf->pid, &info_flags, | |
942fd805 | 819 | (procinfo_t *) &pi, &pi_len, &noise, &noise_len); |
c906108c | 820 | if (err) |
f90b2b1d JK |
821 | { |
822 | inf->task->dead = 1; /* oh well */ | |
823 | return; | |
824 | } | |
825 | ||
826 | if (inf->task->cur_sc < pi->taskinfo.suspend_count && suspend_count == -1) | |
827 | { | |
828 | /* The proc server might have suspended the task while stopping | |
dda83cd7 SM |
829 | it. This happens when the task is handling a traced signal. |
830 | Refetch the suspend count. The proc server should be | |
831 | finished stopping the task by now. */ | |
f90b2b1d JK |
832 | suspend_count = pi->taskinfo.suspend_count; |
833 | goto retry; | |
834 | } | |
835 | ||
836 | suspend_count = pi->taskinfo.suspend_count; | |
837 | ||
a441dfbc ST |
838 | vm_deallocate (mach_task_self (), (vm_address_t) pi, |
839 | pi_len * sizeof (*(procinfo_t) 0)); | |
f90b2b1d | 840 | if (noise_len > 0) |
a441dfbc | 841 | vm_deallocate (mach_task_self (), (vm_address_t) noise, noise_len); |
f90b2b1d JK |
842 | |
843 | if (inf->task->cur_sc < suspend_count) | |
c906108c | 844 | { |
651ce16a PA |
845 | if (!query (_("Pid %d has an additional task suspend count of %d;" |
846 | " clear it? "), inf->pid, | |
847 | suspend_count - inf->task->cur_sc)) | |
8a3fe4f8 | 848 | error (_("Additional task suspend count left untouched.")); |
c906108c | 849 | |
f90b2b1d | 850 | inf->task->cur_sc = suspend_count; |
c906108c SS |
851 | } |
852 | } | |
853 | ||
942fd805 MK |
854 | /* Turns tracing for INF on or off, depending on ON, unless it already |
855 | is. If INF is running, the resume_sc count of INF's threads will | |
856 | be modified, and the signal thread will briefly be run to change | |
857 | the trace state. */ | |
14a8ad62 ST |
858 | void |
859 | gnu_nat_target::inf_set_traced (struct inf *inf, int on) | |
c906108c | 860 | { |
942fd805 MK |
861 | if (on == inf->traced) |
862 | return; | |
863 | ||
864 | if (inf->task && !inf->task->dead) | |
865 | /* Make it take effect immediately. */ | |
866 | { | |
867 | sigset_t mask = on ? ~(sigset_t) 0 : 0; | |
0947023d | 868 | kern_return_t err = |
c5aa993b | 869 | INF_RESUME_MSGPORT_RPC (inf, msg_set_init_int (msgport, refport, |
942fd805 | 870 | INIT_TRACEMASK, mask)); |
d8734c88 | 871 | |
942fd805 MK |
872 | if (err == EIEIO) |
873 | { | |
874 | if (on) | |
8a3fe4f8 | 875 | warning (_("Can't modify tracing state for pid %d: %s"), |
942fd805 | 876 | inf->pid, "No signal thread"); |
c906108c | 877 | inf->traced = on; |
942fd805 MK |
878 | } |
879 | else if (err) | |
8a3fe4f8 | 880 | warning (_("Can't modify tracing state for pid %d: %s"), |
dc672865 | 881 | inf->pid, safe_strerror (err)); |
942fd805 MK |
882 | else |
883 | inf->traced = on; | |
884 | } | |
885 | else | |
886 | inf->traced = on; | |
c906108c | 887 | } |
942fd805 | 888 | |
c906108c | 889 | \f |
942fd805 MK |
890 | /* Makes all the real suspend count deltas of all the procs in INF |
891 | match the desired values. Careful to always do thread/task suspend | |
892 | counts in the safe order. Returns true if at least one thread is | |
0963b4bd | 893 | thought to be running. */ |
c906108c | 894 | int |
14a8ad62 | 895 | gnu_nat_target::inf_update_suspends (struct inf *inf) |
c906108c SS |
896 | { |
897 | struct proc *task = inf->task; | |
d8734c88 | 898 | |
c906108c SS |
899 | /* We don't have to update INF->threads even though we're iterating over it |
900 | because we'll change a thread only if it already has an existing proc | |
901 | entry. */ | |
c906108c SS |
902 | inf_debug (inf, "updating suspend counts"); |
903 | ||
904 | if (task) | |
905 | { | |
906 | struct proc *thread; | |
907 | int task_running = (task->sc == 0), thread_running = 0; | |
908 | ||
909 | if (task->sc > task->cur_sc) | |
910 | /* The task is becoming _more_ suspended; do before any threads. */ | |
911 | task_running = proc_update_sc (task); | |
912 | ||
913 | if (inf->pending_execs) | |
914 | /* When we're waiting for an exec, things may be happening behind our | |
915 | back, so be conservative. */ | |
916 | thread_running = 1; | |
917 | ||
918 | /* Do all the thread suspend counts. */ | |
919 | for (thread = inf->threads; thread; thread = thread->next) | |
920 | thread_running |= proc_update_sc (thread); | |
921 | ||
922 | if (task->sc != task->cur_sc) | |
923 | /* We didn't do the task first, because we wanted to wait for the | |
924 | threads; do it now. */ | |
925 | task_running = proc_update_sc (task); | |
926 | ||
927 | inf_debug (inf, "%srunning...", | |
928 | (thread_running && task_running) ? "" : "not "); | |
929 | ||
930 | inf->running = thread_running && task_running; | |
931 | ||
932 | /* Once any thread has executed some code, we can't depend on the | |
dda83cd7 | 933 | threads list any more. */ |
c906108c SS |
934 | if (inf->running) |
935 | inf->threads_up_to_date = 0; | |
936 | ||
937 | return inf->running; | |
938 | } | |
939 | ||
940 | return 0; | |
941 | } | |
942fd805 | 942 | |
c906108c SS |
943 | \f |
944 | /* Converts a GDB pid to a struct proc. */ | |
945 | struct proc * | |
946 | inf_tid_to_thread (struct inf *inf, int tid) | |
947 | { | |
948 | struct proc *thread = inf->threads; | |
949 | ||
950 | while (thread) | |
951 | if (thread->tid == tid) | |
952 | return thread; | |
953 | else | |
954 | thread = thread->next; | |
955 | return 0; | |
956 | } | |
957 | ||
958 | /* Converts a thread port to a struct proc. */ | |
f04a82ef | 959 | static struct proc * |
c906108c SS |
960 | inf_port_to_thread (struct inf *inf, mach_port_t port) |
961 | { | |
962 | struct proc *thread = inf->threads; | |
d8734c88 | 963 | |
c906108c SS |
964 | while (thread) |
965 | if (thread->port == port) | |
966 | return thread; | |
967 | else | |
968 | thread = thread->next; | |
969 | return 0; | |
970 | } | |
942fd805 | 971 | |
05db5edd ST |
972 | /* See gnu-nat.h. */ |
973 | ||
974 | void | |
975 | inf_threads (struct inf *inf, inf_threads_ftype *f, void *arg) | |
976 | { | |
977 | struct proc *thread; | |
978 | ||
979 | for (thread = inf->threads; thread; thread = thread->next) | |
980 | f (thread, arg); | |
981 | } | |
982 | ||
c906108c SS |
983 | \f |
984 | /* Make INF's list of threads be consistent with reality of TASK. */ | |
985 | void | |
14a8ad62 | 986 | gnu_nat_target::inf_validate_procs (struct inf *inf) |
c906108c | 987 | { |
c906108c | 988 | thread_array_t threads; |
942fd805 | 989 | mach_msg_type_number_t num_threads, i; |
c906108c SS |
990 | struct proc *task = inf->task; |
991 | ||
992 | /* If no threads are currently running, this function will guarantee that | |
993 | things are up to date. The exception is if there are zero threads -- | |
994 | then it is almost certainly in an odd state, and probably some outside | |
995 | agent will create threads. */ | |
996 | inf->threads_up_to_date = inf->threads ? !inf->running : 0; | |
997 | ||
998 | if (task) | |
999 | { | |
0947023d | 1000 | kern_return_t err = task_threads (task->port, &threads, &num_threads); |
d8734c88 | 1001 | |
c906108c SS |
1002 | inf_debug (inf, "fetching threads"); |
1003 | if (err) | |
1004 | /* TASK must be dead. */ | |
1005 | { | |
1006 | task->dead = 1; | |
1007 | task = 0; | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | if (!task) | |
1012 | { | |
1013 | num_threads = 0; | |
1014 | inf_debug (inf, "no task"); | |
1015 | } | |
1016 | ||
1017 | { | |
942fd805 MK |
1018 | /* Make things normally linear. */ |
1019 | mach_msg_type_number_t search_start = 0; | |
c906108c SS |
1020 | /* Which thread in PROCS corresponds to each task thread, & the task. */ |
1021 | struct proc *matched[num_threads + 1]; | |
1022 | /* The last thread in INF->threads, so we can add to the end. */ | |
1023 | struct proc *last = 0; | |
0963b4bd | 1024 | /* The current thread we're considering. */ |
c906108c SS |
1025 | struct proc *thread = inf->threads; |
1026 | ||
4deab737 | 1027 | memset (matched, 0, sizeof (matched)); |
c906108c SS |
1028 | |
1029 | while (thread) | |
1030 | { | |
942fd805 | 1031 | mach_msg_type_number_t left; |
c906108c SS |
1032 | |
1033 | for (i = search_start, left = num_threads; left; i++, left--) | |
1034 | { | |
1035 | if (i >= num_threads) | |
c5aa993b | 1036 | i -= num_threads; /* I wrapped around. */ |
c906108c SS |
1037 | if (thread->port == threads[i]) |
1038 | /* We already know about this thread. */ | |
1039 | { | |
1040 | matched[i] = thread; | |
1041 | last = thread; | |
1042 | thread = thread->next; | |
1043 | search_start++; | |
1044 | break; | |
1045 | } | |
1046 | } | |
1047 | ||
c5aa993b | 1048 | if (!left) |
c906108c SS |
1049 | { |
1050 | proc_debug (thread, "died!"); | |
1051 | thread->port = MACH_PORT_NULL; | |
c5aa993b | 1052 | thread = _proc_free (thread); /* THREAD is dead. */ |
c4c50d37 DJ |
1053 | if (last) |
1054 | last->next = thread; | |
1055 | else | |
1056 | inf->threads = thread; | |
c906108c SS |
1057 | } |
1058 | } | |
1059 | ||
1060 | for (i = 0; i < num_threads; i++) | |
942fd805 MK |
1061 | { |
1062 | if (matched[i]) | |
1063 | /* Throw away the duplicate send right. */ | |
1064 | mach_port_deallocate (mach_task_self (), threads[i]); | |
1065 | else | |
1066 | /* THREADS[I] is a thread we don't know about yet! */ | |
1067 | { | |
617fd3b5 PA |
1068 | ptid_t ptid; |
1069 | ||
942fd805 | 1070 | thread = make_proc (inf, threads[i], next_thread_id++); |
c4c50d37 DJ |
1071 | if (last) |
1072 | last->next = thread; | |
1073 | else | |
1074 | inf->threads = thread; | |
942fd805 | 1075 | last = thread; |
a9a758e3 | 1076 | proc_debug (thread, "new thread: %lu", threads[i]); |
617fd3b5 | 1077 | |
fd79271b | 1078 | ptid = ptid_t (inf->pid, thread->tid, 0); |
617fd3b5 PA |
1079 | |
1080 | /* Tell GDB's generic thread code. */ | |
1081 | ||
d7e15655 | 1082 | if (inferior_ptid == ptid_t (inf->pid)) |
617fd3b5 PA |
1083 | /* This is the first time we're hearing about thread |
1084 | ids, after a fork-child. */ | |
14a8ad62 | 1085 | thread_change_ptid (this, inferior_ptid, ptid); |
617fd3b5 PA |
1086 | else if (inf->pending_execs != 0) |
1087 | /* This is a shell thread. */ | |
14a8ad62 | 1088 | add_thread_silent (this, ptid); |
617fd3b5 | 1089 | else |
14a8ad62 | 1090 | add_thread (this, ptid); |
942fd805 MK |
1091 | } |
1092 | } | |
c906108c | 1093 | |
c5aa993b | 1094 | vm_deallocate (mach_task_self (), |
942fd805 | 1095 | (vm_address_t) threads, (num_threads * sizeof (thread_t))); |
c906108c SS |
1096 | } |
1097 | } | |
942fd805 | 1098 | |
c906108c SS |
1099 | \f |
1100 | /* Makes sure that INF's thread list is synced with the actual process. */ | |
39efb398 | 1101 | int |
c906108c SS |
1102 | inf_update_procs (struct inf *inf) |
1103 | { | |
c5aa993b | 1104 | if (!inf->task) |
c906108c | 1105 | return 0; |
c5aa993b | 1106 | if (!inf->threads_up_to_date) |
14a8ad62 | 1107 | gnu_target->inf_validate_procs (inf); |
c906108c SS |
1108 | return !!inf->task; |
1109 | } | |
1110 | ||
1111 | /* Sets the resume_sc of each thread in inf. That of RUN_THREAD is set to 0, | |
1112 | and others are set to their run_sc if RUN_OTHERS is true, and otherwise | |
1113 | their pause_sc. */ | |
39efb398 | 1114 | void |
14a8ad62 ST |
1115 | gnu_nat_target::inf_set_threads_resume_sc (struct inf *inf, |
1116 | struct proc *run_thread, int run_others) | |
c906108c SS |
1117 | { |
1118 | struct proc *thread; | |
d8734c88 | 1119 | |
c906108c SS |
1120 | inf_update_procs (inf); |
1121 | for (thread = inf->threads; thread; thread = thread->next) | |
1122 | if (thread == run_thread) | |
1123 | thread->resume_sc = 0; | |
1124 | else if (run_others) | |
1125 | thread->resume_sc = thread->run_sc; | |
1126 | else | |
1127 | thread->resume_sc = thread->pause_sc; | |
1128 | } | |
942fd805 | 1129 | |
c906108c SS |
1130 | \f |
1131 | /* Cause INF to continue execution immediately; individual threads may still | |
1132 | be suspended (but their suspend counts will be updated). */ | |
39efb398 | 1133 | void |
14a8ad62 | 1134 | gnu_nat_target::inf_resume (struct inf *inf) |
c906108c SS |
1135 | { |
1136 | struct proc *thread; | |
1137 | ||
1138 | inf_update_procs (inf); | |
1139 | ||
1140 | for (thread = inf->threads; thread; thread = thread->next) | |
1141 | thread->sc = thread->resume_sc; | |
1142 | ||
1143 | if (inf->task) | |
1144 | { | |
c5aa993b | 1145 | if (!inf->pending_execs) |
c906108c SS |
1146 | /* Try to make sure our task count is correct -- in the case where |
1147 | we're waiting for an exec though, things are too volatile, so just | |
1148 | assume things will be reasonable (which they usually will be). */ | |
1149 | inf_validate_task_sc (inf); | |
1150 | inf->task->sc = 0; | |
1151 | } | |
1152 | ||
1153 | inf_update_suspends (inf); | |
1154 | } | |
1155 | ||
1156 | /* Cause INF to stop execution immediately; individual threads may still | |
1157 | be running. */ | |
39efb398 | 1158 | void |
14a8ad62 | 1159 | gnu_nat_target::inf_suspend (struct inf *inf) |
c906108c SS |
1160 | { |
1161 | struct proc *thread; | |
1162 | ||
1163 | inf_update_procs (inf); | |
1164 | ||
1165 | for (thread = inf->threads; thread; thread = thread->next) | |
1166 | thread->sc = thread->pause_sc; | |
1167 | ||
1168 | if (inf->task) | |
1169 | inf->task->sc = inf->pause_sc; | |
1170 | ||
1171 | inf_update_suspends (inf); | |
1172 | } | |
942fd805 | 1173 | |
c906108c | 1174 | \f |
942fd805 MK |
1175 | /* INF has one thread PROC that is in single-stepping mode. This |
1176 | function changes it to be PROC, changing any old step_thread to be | |
1177 | a normal one. A PROC of 0 clears any existing value. */ | |
c906108c | 1178 | void |
14a8ad62 | 1179 | gnu_nat_target::inf_set_step_thread (struct inf *inf, struct proc *thread) |
c906108c | 1180 | { |
bf62e5b4 | 1181 | gdb_assert (!thread || proc_is_thread (thread)); |
c906108c SS |
1182 | |
1183 | if (thread) | |
1184 | inf_debug (inf, "setting step thread: %d/%d", inf->pid, thread->tid); | |
1185 | else | |
1186 | inf_debug (inf, "clearing step thread"); | |
1187 | ||
1188 | if (inf->step_thread != thread) | |
1189 | { | |
1190 | if (inf->step_thread && inf->step_thread->port != MACH_PORT_NULL) | |
c5aa993b | 1191 | if (!proc_trace (inf->step_thread, 0)) |
c906108c SS |
1192 | return; |
1193 | if (thread && proc_trace (thread, 1)) | |
1194 | inf->step_thread = thread; | |
1195 | else | |
1196 | inf->step_thread = 0; | |
1197 | } | |
1198 | } | |
942fd805 | 1199 | |
c906108c SS |
1200 | \f |
1201 | /* Set up the thread resume_sc's so that only the signal thread is running | |
1202 | (plus whatever other thread are set to always run). Returns true if we | |
1203 | did so, or false if we can't find a signal thread. */ | |
39efb398 | 1204 | int |
14a8ad62 | 1205 | gnu_nat_target::inf_set_threads_resume_sc_for_signal_thread (struct inf *inf) |
c906108c SS |
1206 | { |
1207 | if (inf->signal_thread) | |
1208 | { | |
1209 | inf_set_threads_resume_sc (inf, inf->signal_thread, 0); | |
1210 | return 1; | |
1211 | } | |
1212 | else | |
1213 | return 0; | |
1214 | } | |
1215 | ||
1216 | static void | |
1217 | inf_update_signal_thread (struct inf *inf) | |
1218 | { | |
1219 | /* XXX for now we assume that if there's a msgport, the 2nd thread is | |
1220 | the signal thread. */ | |
1221 | inf->signal_thread = inf->threads ? inf->threads->next : 0; | |
1222 | } | |
942fd805 | 1223 | |
c906108c SS |
1224 | \f |
1225 | /* Detachs from INF's inferior task, letting it run once again... */ | |
1226 | void | |
14a8ad62 | 1227 | gnu_nat_target::inf_detach (struct inf *inf) |
c906108c SS |
1228 | { |
1229 | struct proc *task = inf->task; | |
1230 | ||
1231 | inf_debug (inf, "detaching..."); | |
1232 | ||
1233 | inf_clear_wait (inf); | |
1234 | inf_set_step_thread (inf, 0); | |
1235 | ||
1236 | if (task) | |
1237 | { | |
1238 | struct proc *thread; | |
1239 | ||
cce74817 JM |
1240 | inf_validate_procinfo (inf); |
1241 | ||
c906108c SS |
1242 | inf_set_traced (inf, 0); |
1243 | if (inf->stopped) | |
cce74817 JM |
1244 | { |
1245 | if (inf->nomsg) | |
1246 | inf_continue (inf); | |
1247 | else | |
a493e3e2 | 1248 | inf_signal (inf, GDB_SIGNAL_0); |
cce74817 | 1249 | } |
c906108c SS |
1250 | |
1251 | proc_restore_exc_port (task); | |
1252 | task->sc = inf->detach_sc; | |
1253 | ||
1254 | for (thread = inf->threads; thread; thread = thread->next) | |
1255 | { | |
1256 | proc_restore_exc_port (thread); | |
1257 | thread->sc = thread->detach_sc; | |
1258 | } | |
1259 | ||
1260 | inf_update_suspends (inf); | |
1261 | } | |
1262 | ||
1263 | inf_cleanup (inf); | |
1264 | } | |
1265 | ||
942fd805 MK |
1266 | /* Attaches INF to the process with process id PID, returning it in a |
1267 | suspended state suitable for debugging. */ | |
c906108c | 1268 | void |
14a8ad62 | 1269 | gnu_nat_target::inf_attach (struct inf *inf, int pid) |
c906108c SS |
1270 | { |
1271 | inf_debug (inf, "attaching: %d", pid); | |
1272 | ||
1273 | if (inf->pid) | |
1274 | inf_detach (inf); | |
1275 | ||
1276 | inf_startup (inf, pid); | |
1277 | } | |
942fd805 | 1278 | |
c906108c | 1279 | \f |
0963b4bd | 1280 | /* Makes sure that we've got our exception ports entrenched in the process. */ |
c5aa993b | 1281 | void |
14a8ad62 | 1282 | gnu_nat_target::inf_steal_exc_ports (struct inf *inf) |
c906108c SS |
1283 | { |
1284 | struct proc *thread; | |
1285 | ||
1286 | inf_debug (inf, "stealing exception ports"); | |
1287 | ||
0963b4bd | 1288 | inf_set_step_thread (inf, 0); /* The step thread is special. */ |
c906108c SS |
1289 | |
1290 | proc_steal_exc_port (inf->task, inf->event_port); | |
1291 | for (thread = inf->threads; thread; thread = thread->next) | |
1292 | proc_steal_exc_port (thread, MACH_PORT_NULL); | |
1293 | } | |
1294 | ||
1295 | /* Makes sure the process has its own exception ports. */ | |
c5aa993b | 1296 | void |
14a8ad62 | 1297 | gnu_nat_target::inf_restore_exc_ports (struct inf *inf) |
c906108c SS |
1298 | { |
1299 | struct proc *thread; | |
1300 | ||
1301 | inf_debug (inf, "restoring exception ports"); | |
1302 | ||
0963b4bd | 1303 | inf_set_step_thread (inf, 0); /* The step thread is special. */ |
c906108c SS |
1304 | |
1305 | proc_restore_exc_port (inf->task); | |
1306 | for (thread = inf->threads; thread; thread = thread->next) | |
1307 | proc_restore_exc_port (thread); | |
1308 | } | |
942fd805 | 1309 | |
c906108c SS |
1310 | \f |
1311 | /* Deliver signal SIG to INF. If INF is stopped, delivering a signal, even | |
1312 | signal 0, will continue it. INF is assumed to be in a paused state, and | |
1313 | the resume_sc's of INF's threads may be affected. */ | |
1314 | void | |
14a8ad62 | 1315 | gnu_nat_target::inf_signal (struct inf *inf, enum gdb_signal sig) |
c906108c | 1316 | { |
0947023d | 1317 | kern_return_t err = 0; |
2ea28649 | 1318 | int host_sig = gdb_signal_to_host (sig); |
c906108c | 1319 | |
2ea28649 | 1320 | #define NAME gdb_signal_to_name (sig) |
c906108c SS |
1321 | |
1322 | if (host_sig >= _NSIG) | |
1323 | /* A mach exception. Exceptions are encoded in the signal space by | |
1324 | putting them after _NSIG; this assumes they're positive (and not | |
1325 | extremely large)! */ | |
1326 | { | |
1327 | struct inf_wait *w = &inf->wait; | |
d8734c88 | 1328 | |
c906108c SS |
1329 | if (w->status.kind == TARGET_WAITKIND_STOPPED |
1330 | && w->status.value.sig == sig | |
1331 | && w->thread && !w->thread->aborted) | |
1332 | /* We're passing through the last exception we received. This is | |
1333 | kind of bogus, because exceptions are per-thread whereas gdb | |
1334 | treats signals as per-process. We just forward the exception to | |
1335 | the correct handler, even it's not for the same thread as TID -- | |
1336 | i.e., we pretend it's global. */ | |
1337 | { | |
1338 | struct exc_state *e = &w->exc; | |
d8734c88 | 1339 | |
c906108c | 1340 | inf_debug (inf, "passing through exception:" |
a9a758e3 | 1341 | " task = %lu, thread = %lu, exc = %d" |
c906108c SS |
1342 | ", code = %d, subcode = %d", |
1343 | w->thread->port, inf->task->port, | |
1344 | e->exception, e->code, e->subcode); | |
1345 | err = | |
1346 | exception_raise_request (e->handler, | |
1347 | e->reply, MACH_MSG_TYPE_MOVE_SEND_ONCE, | |
1348 | w->thread->port, inf->task->port, | |
1349 | e->exception, e->code, e->subcode); | |
1350 | } | |
1351 | else | |
8a3fe4f8 | 1352 | error (_("Can't forward spontaneous exception (%s)."), NAME); |
c906108c SS |
1353 | } |
1354 | else | |
1355 | /* A Unix signal. */ | |
c5aa993b JM |
1356 | if (inf->stopped) |
1357 | /* The process is stopped and expecting a signal. Just send off a | |
1358 | request and let it get handled when we resume everything. */ | |
1359 | { | |
1360 | inf_debug (inf, "sending %s to stopped process", NAME); | |
1361 | err = | |
1362 | INF_MSGPORT_RPC (inf, | |
1363 | msg_sig_post_untraced_request (msgport, | |
1364 | inf->event_port, | |
1365 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
1366 | host_sig, 0, | |
1367 | refport)); | |
1368 | if (!err) | |
1369 | /* Posting an untraced signal automatically continues it. | |
1370 | We clear this here rather than when we get the reply | |
1371 | because we'd rather assume it's not stopped when it | |
1372 | actually is, than the reverse. */ | |
1373 | inf->stopped = 0; | |
1374 | } | |
1375 | else | |
1376 | /* It's not expecting it. We have to let just the signal thread | |
1377 | run, and wait for it to get into a reasonable state before we | |
1378 | can continue the rest of the process. When we finally resume the | |
1379 | process the signal we request will be the very first thing that | |
0963b4bd | 1380 | happens. */ |
c5aa993b | 1381 | { |
942fd805 MK |
1382 | inf_debug (inf, "sending %s to unstopped process" |
1383 | " (so resuming signal thread)", NAME); | |
c5aa993b | 1384 | err = |
942fd805 MK |
1385 | INF_RESUME_MSGPORT_RPC (inf, |
1386 | msg_sig_post_untraced (msgport, host_sig, | |
1387 | 0, refport)); | |
c5aa993b | 1388 | } |
c906108c SS |
1389 | |
1390 | if (err == EIEIO) | |
0963b4bd | 1391 | /* Can't do too much... */ |
8a3fe4f8 | 1392 | warning (_("Can't deliver signal %s: No signal thread."), NAME); |
c906108c | 1393 | else if (err) |
8a3fe4f8 | 1394 | warning (_("Delivering signal %s: %s"), NAME, safe_strerror (err)); |
c906108c SS |
1395 | |
1396 | #undef NAME | |
1397 | } | |
942fd805 | 1398 | |
c906108c | 1399 | \f |
cce74817 JM |
1400 | /* Continue INF without delivering a signal. This is meant to be used |
1401 | when INF does not have a message port. */ | |
1402 | void | |
14a8ad62 | 1403 | gnu_nat_target::inf_continue (struct inf *inf) |
cce74817 JM |
1404 | { |
1405 | process_t proc; | |
0947023d | 1406 | kern_return_t err = proc_pid2proc (proc_server, inf->pid, &proc); |
cce74817 | 1407 | |
c5aa993b | 1408 | if (!err) |
cce74817 JM |
1409 | { |
1410 | inf_debug (inf, "continuing process"); | |
1411 | ||
1412 | err = proc_mark_cont (proc); | |
c5aa993b | 1413 | if (!err) |
cce74817 JM |
1414 | { |
1415 | struct proc *thread; | |
1416 | ||
1417 | for (thread = inf->threads; thread; thread = thread->next) | |
1418 | thread_resume (thread->port); | |
c5aa993b | 1419 | |
cce74817 JM |
1420 | inf->stopped = 0; |
1421 | } | |
1422 | } | |
1423 | ||
1424 | if (err) | |
8a3fe4f8 | 1425 | warning (_("Can't continue process: %s"), safe_strerror (err)); |
cce74817 | 1426 | } |
942fd805 | 1427 | |
cce74817 | 1428 | \f |
c906108c | 1429 | /* The inferior used for all gdb target ops. */ |
c289427b | 1430 | struct inf *gnu_current_inf = 0; |
c906108c SS |
1431 | |
1432 | /* The inferior being waited for by gnu_wait. Since GDB is decidely not | |
1433 | multi-threaded, we don't bother to lock this. */ | |
14a8ad62 | 1434 | static struct inf *waiting_inf; |
c906108c | 1435 | |
0963b4bd | 1436 | /* Wait for something to happen in the inferior, returning what in STATUS. */ |
f6ac5f3d PA |
1437 | |
1438 | ptid_t | |
1439 | gnu_nat_target::wait (ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 1440 | target_wait_flags options) |
c906108c | 1441 | { |
c5aa993b JM |
1442 | struct msg |
1443 | { | |
1444 | mach_msg_header_t hdr; | |
1445 | mach_msg_type_t type; | |
1446 | int data[8000]; | |
942fd805 | 1447 | } msg; |
0947023d | 1448 | kern_return_t err; |
c906108c | 1449 | struct proc *thread; |
c289427b | 1450 | struct inf *inf = gnu_current_inf; |
c906108c | 1451 | |
bf62e5b4 | 1452 | gdb_assert (inf->task); |
c906108c SS |
1453 | |
1454 | if (!inf->threads && !inf->pending_execs) | |
1455 | /* No threads! Assume that maybe some outside agency is frobbing our | |
1456 | task, and really look for new threads. If we can't find any, just tell | |
1457 | the user to try again later. */ | |
1458 | { | |
1459 | inf_validate_procs (inf); | |
1460 | if (!inf->threads && !inf->task->dead) | |
8a3fe4f8 | 1461 | error (_("There are no threads; try again later.")); |
c906108c SS |
1462 | } |
1463 | ||
1464 | waiting_inf = inf; | |
1465 | ||
a068643d | 1466 | inf_debug (inf, "waiting for: %s", target_pid_to_str (ptid).c_str ()); |
c906108c | 1467 | |
c5aa993b | 1468 | rewait: |
c906108c SS |
1469 | if (proc_wait_pid != inf->pid && !inf->no_wait) |
1470 | /* Always get information on events from the proc server. */ | |
1471 | { | |
1472 | inf_debug (inf, "requesting wait on pid %d", inf->pid); | |
1473 | ||
1474 | if (proc_wait_pid) | |
1475 | /* The proc server is single-threaded, and only allows a single | |
0963b4bd | 1476 | outstanding wait request, so we have to cancel the previous one. */ |
c906108c SS |
1477 | { |
1478 | inf_debug (inf, "cancelling previous wait on pid %d", proc_wait_pid); | |
1479 | interrupt_operation (proc_server, 0); | |
1480 | } | |
1481 | ||
1482 | err = | |
1483 | proc_wait_request (proc_server, inf->event_port, inf->pid, WUNTRACED); | |
1484 | if (err) | |
8a3fe4f8 | 1485 | warning (_("wait request failed: %s"), safe_strerror (err)); |
c906108c SS |
1486 | else |
1487 | { | |
1488 | inf_debug (inf, "waits pending: %d", proc_waits_pending); | |
1489 | proc_wait_pid = inf->pid; | |
942fd805 MK |
1490 | /* Even if proc_waits_pending was > 0 before, we still won't |
1491 | get any other replies, because it was either from a | |
1492 | different INF, or a different process attached to INF -- | |
1493 | and the event port, which is the wait reply port, changes | |
0963b4bd | 1494 | when you switch processes. */ |
c906108c SS |
1495 | proc_waits_pending = 1; |
1496 | } | |
1497 | } | |
1498 | ||
1499 | inf_clear_wait (inf); | |
1500 | ||
1501 | /* What can happen? (1) Dead name notification; (2) Exceptions arrive; | |
1502 | (3) wait reply from the proc server. */ | |
1503 | ||
1504 | inf_debug (inf, "waiting for an event..."); | |
1505 | err = mach_msg (&msg.hdr, MACH_RCV_MSG | MACH_RCV_INTERRUPT, | |
1506 | 0, sizeof (struct msg), inf->event_port, | |
1507 | MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); | |
1508 | ||
1509 | /* Re-suspend the task. */ | |
1510 | inf_suspend (inf); | |
1511 | ||
1512 | if (!inf->task && inf->pending_execs) | |
1513 | /* When doing an exec, it's possible that the old task wasn't reused | |
1514 | (e.g., setuid execs). So if the task seems to have disappeared, | |
1515 | attempt to refetch it, as the pid should still be the same. */ | |
1516 | inf_set_pid (inf, inf->pid); | |
1517 | ||
1518 | if (err == EMACH_RCV_INTERRUPTED) | |
1519 | inf_debug (inf, "interrupted"); | |
1520 | else if (err) | |
8a3fe4f8 | 1521 | error (_("Couldn't wait for an event: %s"), safe_strerror (err)); |
c906108c SS |
1522 | else |
1523 | { | |
c5aa993b JM |
1524 | struct |
1525 | { | |
1526 | mach_msg_header_t hdr; | |
1527 | mach_msg_type_t err_type; | |
1528 | kern_return_t err; | |
1529 | char noise[200]; | |
1530 | } | |
1531 | reply; | |
c906108c SS |
1532 | |
1533 | inf_debug (inf, "event: msgid = %d", msg.hdr.msgh_id); | |
1534 | ||
1535 | /* Handle what we got. */ | |
c5aa993b JM |
1536 | if (!notify_server (&msg.hdr, &reply.hdr) |
1537 | && !exc_server (&msg.hdr, &reply.hdr) | |
1538 | && !process_reply_server (&msg.hdr, &reply.hdr) | |
1539 | && !msg_reply_server (&msg.hdr, &reply.hdr)) | |
c906108c | 1540 | /* Whatever it is, it's something strange. */ |
8a3fe4f8 | 1541 | error (_("Got a strange event, msg id = %d."), msg.hdr.msgh_id); |
c906108c SS |
1542 | |
1543 | if (reply.err) | |
8a3fe4f8 | 1544 | error (_("Handling event, msgid = %d: %s"), |
dc672865 | 1545 | msg.hdr.msgh_id, safe_strerror (reply.err)); |
c906108c SS |
1546 | } |
1547 | ||
1548 | if (inf->pending_execs) | |
1549 | /* We're waiting for the inferior to finish execing. */ | |
1550 | { | |
1551 | struct inf_wait *w = &inf->wait; | |
1552 | enum target_waitkind kind = w->status.kind; | |
1553 | ||
1554 | if (kind == TARGET_WAITKIND_SPURIOUS) | |
1555 | /* Since gdb is actually counting the number of times the inferior | |
1556 | stops, expecting one stop per exec, we only return major events | |
1557 | while execing. */ | |
1558 | { | |
1559 | w->suppress = 1; | |
c82f56d9 | 1560 | inf_debug (inf, "pending_execs, ignoring minor event"); |
c906108c SS |
1561 | } |
1562 | else if (kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 | 1563 | && w->status.value.sig == GDB_SIGNAL_TRAP) |
c906108c SS |
1564 | /* Ah hah! A SIGTRAP from the inferior while starting up probably |
1565 | means we've succesfully completed an exec! */ | |
1566 | { | |
c82f56d9 | 1567 | inf_debug (inf, "one pending exec completed"); |
c906108c SS |
1568 | } |
1569 | else if (kind == TARGET_WAITKIND_STOPPED) | |
1570 | /* It's possible that this signal is because of a crashed process | |
1571 | being handled by the hurd crash server; in this case, the process | |
1572 | will have an extra task suspend, which we need to know about. | |
1573 | Since the code in inf_resume that normally checks for this is | |
1574 | disabled while INF->pending_execs, we do the check here instead. */ | |
1575 | inf_validate_task_sc (inf); | |
1576 | } | |
1577 | ||
1578 | if (inf->wait.suppress) | |
1579 | /* Some totally spurious event happened that we don't consider | |
1580 | worth returning to gdb. Just keep waiting. */ | |
1581 | { | |
1582 | inf_debug (inf, "suppressing return, rewaiting..."); | |
1583 | inf_resume (inf); | |
1584 | goto rewait; | |
1585 | } | |
1586 | ||
1587 | /* Pass back out our results. */ | |
98d346c3 | 1588 | memcpy (status, &inf->wait.status, sizeof (*status)); |
c906108c SS |
1589 | |
1590 | thread = inf->wait.thread; | |
1591 | if (thread) | |
fd79271b | 1592 | ptid = ptid_t (inf->pid, thread->tid, 0); |
d7e15655 | 1593 | else if (ptid == minus_one_ptid) |
617fd3b5 | 1594 | thread = inf_tid_to_thread (inf, -1); |
c906108c | 1595 | else |
e38504b3 | 1596 | thread = inf_tid_to_thread (inf, ptid.lwp ()); |
c906108c SS |
1597 | |
1598 | if (!thread || thread->port == MACH_PORT_NULL) | |
942fd805 MK |
1599 | { |
1600 | /* TID is dead; try and find a new thread. */ | |
1601 | if (inf_update_procs (inf) && inf->threads) | |
fd79271b | 1602 | ptid = ptid_t (inf->pid, inf->threads->tid, 0); /* The first |
0963b4bd MS |
1603 | available |
1604 | thread. */ | |
942fd805 | 1605 | else |
617fd3b5 | 1606 | ptid = inferior_ptid; /* let wait_for_inferior handle exit case */ |
942fd805 | 1607 | } |
c906108c | 1608 | |
617fd3b5 | 1609 | if (thread |
d7e15655 | 1610 | && ptid != minus_one_ptid |
617fd3b5 | 1611 | && status->kind != TARGET_WAITKIND_SPURIOUS |
c906108c | 1612 | && inf->pause_sc == 0 && thread->pause_sc == 0) |
942fd805 MK |
1613 | /* If something actually happened to THREAD, make sure we |
1614 | suspend it. */ | |
c906108c SS |
1615 | { |
1616 | thread->sc = 1; | |
1617 | inf_update_suspends (inf); | |
c5aa993b | 1618 | } |
c906108c | 1619 | |
c29705b7 | 1620 | inf_debug (inf, "returning ptid = %s, %s", |
a068643d | 1621 | target_pid_to_str (ptid).c_str (), |
e9f8e3f1 | 1622 | target_waitstatus_to_string (status).c_str ()); |
c906108c | 1623 | |
617fd3b5 | 1624 | return ptid; |
c906108c | 1625 | } |
942fd805 | 1626 | |
c906108c SS |
1627 | \f |
1628 | /* The rpc handler called by exc_server. */ | |
0947023d | 1629 | kern_return_t |
c906108c SS |
1630 | S_exception_raise_request (mach_port_t port, mach_port_t reply_port, |
1631 | thread_t thread_port, task_t task_port, | |
1632 | int exception, int code, int subcode) | |
1633 | { | |
1634 | struct inf *inf = waiting_inf; | |
1635 | struct proc *thread = inf_port_to_thread (inf, thread_port); | |
1636 | ||
1637 | inf_debug (waiting_inf, | |
a9a758e3 | 1638 | "thread = %lu, task = %lu, exc = %d, code = %d, subcode = %d", |
942fd805 | 1639 | thread_port, task_port, exception, code, subcode); |
c906108c SS |
1640 | |
1641 | if (!thread) | |
1642 | /* We don't know about thread? */ | |
1643 | { | |
1644 | inf_update_procs (inf); | |
1645 | thread = inf_port_to_thread (inf, thread_port); | |
1646 | if (!thread) | |
1647 | /* Give up, the generating thread is gone. */ | |
1648 | return 0; | |
1649 | } | |
1650 | ||
1651 | mach_port_deallocate (mach_task_self (), thread_port); | |
1652 | mach_port_deallocate (mach_task_self (), task_port); | |
1653 | ||
c5aa993b | 1654 | if (!thread->aborted) |
c906108c SS |
1655 | /* THREAD hasn't been aborted since this exception happened (abortion |
1656 | clears any exception state), so it must be real. */ | |
1657 | { | |
1658 | /* Store away the details; this will destroy any previous info. */ | |
1659 | inf->wait.thread = thread; | |
1660 | ||
1661 | inf->wait.status.kind = TARGET_WAITKIND_STOPPED; | |
1662 | ||
1663 | if (exception == EXC_BREAKPOINT) | |
1664 | /* GDB likes to get SIGTRAP for breakpoints. */ | |
1665 | { | |
a493e3e2 | 1666 | inf->wait.status.value.sig = GDB_SIGNAL_TRAP; |
c906108c SS |
1667 | mach_port_deallocate (mach_task_self (), reply_port); |
1668 | } | |
1669 | else | |
1670 | /* Record the exception so that we can forward it later. */ | |
1671 | { | |
1672 | if (thread->exc_port == port) | |
1673 | { | |
a9a758e3 | 1674 | inf_debug (waiting_inf, "Handler is thread exception port <%lu>", |
c906108c SS |
1675 | thread->saved_exc_port); |
1676 | inf->wait.exc.handler = thread->saved_exc_port; | |
1677 | } | |
1678 | else | |
1679 | { | |
a9a758e3 | 1680 | inf_debug (waiting_inf, "Handler is task exception port <%lu>", |
c906108c SS |
1681 | inf->task->saved_exc_port); |
1682 | inf->wait.exc.handler = inf->task->saved_exc_port; | |
bf62e5b4 | 1683 | gdb_assert (inf->task->exc_port == port); |
c906108c SS |
1684 | } |
1685 | if (inf->wait.exc.handler != MACH_PORT_NULL) | |
0963b4bd | 1686 | /* Add a reference to the exception handler. */ |
c906108c SS |
1687 | mach_port_mod_refs (mach_task_self (), |
1688 | inf->wait.exc.handler, MACH_PORT_RIGHT_SEND, | |
1689 | 1); | |
1690 | ||
1691 | inf->wait.exc.exception = exception; | |
1692 | inf->wait.exc.code = code; | |
1693 | inf->wait.exc.subcode = subcode; | |
1694 | inf->wait.exc.reply = reply_port; | |
1695 | ||
0963b4bd MS |
1696 | /* Exceptions are encoded in the signal space by putting |
1697 | them after _NSIG; this assumes they're positive (and not | |
1698 | extremely large)! */ | |
c906108c | 1699 | inf->wait.status.value.sig = |
2ea28649 | 1700 | gdb_signal_from_host (_NSIG + exception); |
c906108c SS |
1701 | } |
1702 | } | |
1703 | else | |
30baf67b | 1704 | /* A suppressed exception, which ignore. */ |
c906108c SS |
1705 | { |
1706 | inf->wait.suppress = 1; | |
1707 | mach_port_deallocate (mach_task_self (), reply_port); | |
1708 | } | |
1709 | ||
1710 | return 0; | |
1711 | } | |
942fd805 | 1712 | |
c906108c SS |
1713 | \f |
1714 | /* Fill in INF's wait field after a task has died without giving us more | |
1715 | detailed information. */ | |
f04a82ef | 1716 | static void |
c906108c SS |
1717 | inf_task_died_status (struct inf *inf) |
1718 | { | |
0963b4bd MS |
1719 | warning (_("Pid %d died with unknown exit status, using SIGKILL."), |
1720 | inf->pid); | |
c906108c | 1721 | inf->wait.status.kind = TARGET_WAITKIND_SIGNALLED; |
a493e3e2 | 1722 | inf->wait.status.value.sig = GDB_SIGNAL_KILL; |
c906108c SS |
1723 | } |
1724 | ||
1725 | /* Notify server routines. The only real one is dead name notification. */ | |
0947023d | 1726 | kern_return_t |
c906108c SS |
1727 | do_mach_notify_dead_name (mach_port_t notify, mach_port_t dead_port) |
1728 | { | |
1729 | struct inf *inf = waiting_inf; | |
1730 | ||
a9a758e3 | 1731 | inf_debug (waiting_inf, "port = %lu", dead_port); |
c906108c SS |
1732 | |
1733 | if (inf->task && inf->task->port == dead_port) | |
1734 | { | |
1735 | proc_debug (inf->task, "is dead"); | |
1736 | inf->task->port = MACH_PORT_NULL; | |
1737 | if (proc_wait_pid == inf->pid) | |
1738 | /* We have a wait outstanding on the process, which will return more | |
1739 | detailed information, so delay until we get that. */ | |
1740 | inf->wait.suppress = 1; | |
1741 | else | |
1742 | /* We never waited for the process (maybe it wasn't a child), so just | |
1743 | pretend it got a SIGKILL. */ | |
1744 | inf_task_died_status (inf); | |
1745 | } | |
1746 | else | |
1747 | { | |
1748 | struct proc *thread = inf_port_to_thread (inf, dead_port); | |
d8734c88 | 1749 | |
c906108c SS |
1750 | if (thread) |
1751 | { | |
1752 | proc_debug (thread, "is dead"); | |
1753 | thread->port = MACH_PORT_NULL; | |
1754 | } | |
f90b2b1d JK |
1755 | |
1756 | if (inf->task->dead) | |
1757 | /* Since the task is dead, its threads are dying with it. */ | |
1758 | inf->wait.suppress = 1; | |
c906108c SS |
1759 | } |
1760 | ||
1761 | mach_port_deallocate (mach_task_self (), dead_port); | |
0963b4bd | 1762 | inf->threads_up_to_date = 0; /* Just in case. */ |
c906108c SS |
1763 | |
1764 | return 0; | |
1765 | } | |
942fd805 | 1766 | |
c906108c | 1767 | \f |
3398af6a | 1768 | #define ILL_RPC(fun, ...) \ |
842c05cd | 1769 | extern kern_return_t fun (__VA_ARGS__); \ |
3398af6a TS |
1770 | kern_return_t fun (__VA_ARGS__) \ |
1771 | { \ | |
1772 | warning (_("illegal rpc: %s"), #fun); \ | |
1773 | return 0; \ | |
1774 | } | |
942fd805 | 1775 | |
3398af6a TS |
1776 | ILL_RPC (do_mach_notify_no_senders, |
1777 | mach_port_t notify, mach_port_mscount_t count) | |
1778 | ILL_RPC (do_mach_notify_port_deleted, | |
1779 | mach_port_t notify, mach_port_t name) | |
1780 | ILL_RPC (do_mach_notify_msg_accepted, | |
1781 | mach_port_t notify, mach_port_t name) | |
1782 | ILL_RPC (do_mach_notify_port_destroyed, | |
1783 | mach_port_t notify, mach_port_t name) | |
1784 | ILL_RPC (do_mach_notify_send_once, | |
1785 | mach_port_t notify) | |
c906108c SS |
1786 | \f |
1787 | /* Process_reply server routines. We only use process_wait_reply. */ | |
1788 | ||
0947023d TS |
1789 | kern_return_t |
1790 | S_proc_wait_reply (mach_port_t reply, kern_return_t err, | |
c906108c SS |
1791 | int status, int sigcode, rusage_t rusage, pid_t pid) |
1792 | { | |
1793 | struct inf *inf = waiting_inf; | |
1794 | ||
1795 | inf_debug (inf, "err = %s, pid = %d, status = 0x%x, sigcode = %d", | |
dc672865 | 1796 | err ? safe_strerror (err) : "0", pid, status, sigcode); |
c906108c SS |
1797 | |
1798 | if (err && proc_wait_pid && (!inf->task || !inf->task->port)) | |
1799 | /* Ack. The task has died, but the task-died notification code didn't | |
1800 | tell anyone because it thought a more detailed reply from the | |
1801 | procserver was forthcoming. However, we now learn that won't | |
1802 | happen... So we have to act like the task just died, and this time, | |
1803 | tell the world. */ | |
1804 | inf_task_died_status (inf); | |
1805 | ||
1806 | if (--proc_waits_pending == 0) | |
1807 | /* PROC_WAIT_PID represents the most recent wait. We will always get | |
1808 | replies in order because the proc server is single threaded. */ | |
1809 | proc_wait_pid = 0; | |
1810 | ||
1811 | inf_debug (inf, "waits pending now: %d", proc_waits_pending); | |
1812 | ||
1813 | if (err) | |
1814 | { | |
1815 | if (err != EINTR) | |
1816 | { | |
0963b4bd MS |
1817 | warning (_("Can't wait for pid %d: %s"), |
1818 | inf->pid, safe_strerror (err)); | |
c906108c SS |
1819 | inf->no_wait = 1; |
1820 | ||
1821 | /* Since we can't see the inferior's signals, don't trap them. */ | |
14a8ad62 | 1822 | gnu_target->inf_set_traced (inf, 0); |
c906108c SS |
1823 | } |
1824 | } | |
1825 | else if (pid == inf->pid) | |
1826 | { | |
1827 | store_waitstatus (&inf->wait.status, status); | |
1828 | if (inf->wait.status.kind == TARGET_WAITKIND_STOPPED) | |
1829 | /* The process has sent us a signal, and stopped itself in a sane | |
1830 | state pending our actions. */ | |
1831 | { | |
1832 | inf_debug (inf, "process has stopped itself"); | |
1833 | inf->stopped = 1; | |
1834 | } | |
1835 | } | |
1836 | else | |
1837 | inf->wait.suppress = 1; /* Something odd happened. Ignore. */ | |
1838 | ||
1839 | return 0; | |
1840 | } | |
1841 | ||
3398af6a TS |
1842 | ILL_RPC (S_proc_setmsgport_reply, |
1843 | mach_port_t reply_port, kern_return_t return_code, | |
1844 | mach_port_t oldmsgport) | |
1845 | ILL_RPC (S_proc_getmsgport_reply, | |
1846 | mach_port_t reply_port, kern_return_t return_code, | |
8071c5ce | 1847 | mach_port_t msgports, mach_msg_type_name_t msgportsPoly) |
3398af6a TS |
1848 | ILL_RPC (S_proc_pid2task_reply, |
1849 | mach_port_t reply_port, kern_return_t return_code, mach_port_t task) | |
1850 | ILL_RPC (S_proc_task2pid_reply, | |
1851 | mach_port_t reply_port, kern_return_t return_code, pid_t pid) | |
1852 | ILL_RPC (S_proc_task2proc_reply, | |
8071c5ce DM |
1853 | mach_port_t reply_port, kern_return_t return_code, |
1854 | mach_port_t proc, mach_msg_type_name_t procPoly) | |
3398af6a TS |
1855 | ILL_RPC (S_proc_proc2task_reply, |
1856 | mach_port_t reply_port, kern_return_t return_code, mach_port_t task) | |
1857 | ILL_RPC (S_proc_pid2proc_reply, | |
8071c5ce DM |
1858 | mach_port_t reply_port, kern_return_t return_code, |
1859 | mach_port_t proc, mach_msg_type_name_t procPoly) | |
3398af6a TS |
1860 | ILL_RPC (S_proc_getprocinfo_reply, |
1861 | mach_port_t reply_port, kern_return_t return_code, | |
1862 | int flags, procinfo_t procinfo, mach_msg_type_number_t procinfoCnt, | |
1863 | data_t threadwaits, mach_msg_type_number_t threadwaitsCnt) | |
1864 | ILL_RPC (S_proc_getprocargs_reply, | |
1865 | mach_port_t reply_port, kern_return_t return_code, | |
1866 | data_t procargs, mach_msg_type_number_t procargsCnt) | |
1867 | ILL_RPC (S_proc_getprocenv_reply, | |
1868 | mach_port_t reply_port, kern_return_t return_code, | |
1869 | data_t procenv, mach_msg_type_number_t procenvCnt) | |
1870 | ILL_RPC (S_proc_getloginid_reply, | |
1871 | mach_port_t reply_port, kern_return_t return_code, pid_t login_id) | |
1872 | ILL_RPC (S_proc_getloginpids_reply, | |
1873 | mach_port_t reply_port, kern_return_t return_code, | |
1874 | pidarray_t pids, mach_msg_type_number_t pidsCnt) | |
1875 | ILL_RPC (S_proc_getlogin_reply, | |
1876 | mach_port_t reply_port, kern_return_t return_code, string_t logname) | |
1877 | ILL_RPC (S_proc_getsid_reply, | |
1878 | mach_port_t reply_port, kern_return_t return_code, pid_t sid) | |
1879 | ILL_RPC (S_proc_getsessionpgids_reply, | |
1880 | mach_port_t reply_port, kern_return_t return_code, | |
1881 | pidarray_t pgidset, mach_msg_type_number_t pgidsetCnt) | |
1882 | ILL_RPC (S_proc_getsessionpids_reply, | |
1883 | mach_port_t reply_port, kern_return_t return_code, | |
1884 | pidarray_t pidset, mach_msg_type_number_t pidsetCnt) | |
1885 | ILL_RPC (S_proc_getsidport_reply, | |
1886 | mach_port_t reply_port, kern_return_t return_code, | |
1887 | mach_port_t sessport) | |
1888 | ILL_RPC (S_proc_getpgrp_reply, | |
1889 | mach_port_t reply_port, kern_return_t return_code, pid_t pgrp) | |
1890 | ILL_RPC (S_proc_getpgrppids_reply, | |
1891 | mach_port_t reply_port, kern_return_t return_code, | |
1892 | pidarray_t pidset, mach_msg_type_number_t pidsetCnt) | |
1893 | ILL_RPC (S_proc_get_tty_reply, | |
1894 | mach_port_t reply_port, kern_return_t return_code, mach_port_t tty) | |
1895 | ILL_RPC (S_proc_getnports_reply, | |
1896 | mach_port_t reply_port, kern_return_t return_code, | |
1897 | mach_msg_type_number_t nports) | |
1898 | ILL_RPC (S_proc_is_important_reply, | |
1899 | mach_port_t reply_port, kern_return_t return_code, | |
1900 | boolean_t essential) | |
1901 | ILL_RPC (S_proc_get_code_reply, | |
1902 | mach_port_t reply_port, kern_return_t return_code, | |
1903 | vm_address_t start_code, vm_address_t end_code) | |
c906108c SS |
1904 | \f |
1905 | /* Msg_reply server routines. We only use msg_sig_post_untraced_reply. */ | |
1906 | ||
0947023d TS |
1907 | kern_return_t |
1908 | S_msg_sig_post_untraced_reply (mach_port_t reply, kern_return_t err) | |
c906108c SS |
1909 | { |
1910 | struct inf *inf = waiting_inf; | |
1911 | ||
1912 | if (err == EBUSY) | |
1913 | /* EBUSY is what we get when the crash server has grabbed control of the | |
1914 | process and doesn't like what signal we tried to send it. Just act | |
1915 | like the process stopped (using a signal of 0 should mean that the | |
1916 | *next* time the user continues, it will pass signal 0, which the crash | |
1917 | server should like). */ | |
1918 | { | |
1919 | inf->wait.status.kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 1920 | inf->wait.status.value.sig = GDB_SIGNAL_0; |
c906108c SS |
1921 | } |
1922 | else if (err) | |
8a3fe4f8 | 1923 | warning (_("Signal delivery failed: %s"), safe_strerror (err)); |
c906108c SS |
1924 | |
1925 | if (err) | |
1926 | /* We only get this reply when we've posted a signal to a process which we | |
1927 | thought was stopped, and which we expected to continue after the signal. | |
1928 | Given that the signal has failed for some reason, it's reasonable to | |
1929 | assume it's still stopped. */ | |
1930 | inf->stopped = 1; | |
1931 | else | |
1932 | inf->wait.suppress = 1; | |
1933 | ||
1934 | return 0; | |
1935 | } | |
1936 | ||
3398af6a | 1937 | ILL_RPC (S_msg_sig_post_reply, |
0947023d | 1938 | mach_port_t reply, kern_return_t err) |
c906108c SS |
1939 | \f |
1940 | /* Returns the number of messages queued for the receive right PORT. */ | |
1941 | static mach_port_msgcount_t | |
1942 | port_msgs_queued (mach_port_t port) | |
1943 | { | |
1944 | struct mach_port_status status; | |
0947023d | 1945 | kern_return_t err = |
d8734c88 | 1946 | mach_port_get_receive_status (mach_task_self (), port, &status); |
c906108c SS |
1947 | |
1948 | if (err) | |
1949 | return 0; | |
1950 | else | |
1951 | return status.mps_msgcount; | |
1952 | } | |
942fd805 | 1953 | |
c906108c SS |
1954 | \f |
1955 | /* Resume execution of the inferior process. | |
1956 | ||
1957 | If STEP is nonzero, single-step it. | |
1958 | If SIGNAL is nonzero, give it that signal. | |
1959 | ||
1960 | TID STEP: | |
1961 | -1 true Single step the current thread allowing other threads to run. | |
1962 | -1 false Continue the current thread allowing other threads to run. | |
1963 | X true Single step the given thread, don't allow any others to run. | |
1964 | X false Continue the given thread, do not allow any others to run. | |
1965 | (Where X, of course, is anything except -1) | |
1966 | ||
1967 | Note that a resume may not `take' if there are pending exceptions/&c | |
1968 | still unprocessed from the last resume we did (any given resume may result | |
0963b4bd MS |
1969 | in multiple events returned by wait). */ |
1970 | ||
f6ac5f3d PA |
1971 | void |
1972 | gnu_nat_target::resume (ptid_t ptid, int step, enum gdb_signal sig) | |
c906108c SS |
1973 | { |
1974 | struct proc *step_thread = 0; | |
617fd3b5 | 1975 | int resume_all; |
c289427b | 1976 | struct inf *inf = gnu_current_inf; |
c906108c | 1977 | |
617fd3b5 | 1978 | inf_debug (inf, "ptid = %s, step = %d, sig = %d", |
a068643d | 1979 | target_pid_to_str (ptid).c_str (), step, sig); |
c906108c | 1980 | |
cce74817 | 1981 | inf_validate_procinfo (inf); |
c5aa993b | 1982 | |
a493e3e2 | 1983 | if (sig != GDB_SIGNAL_0 || inf->stopped) |
cce74817 | 1984 | { |
a493e3e2 | 1985 | if (sig == GDB_SIGNAL_0 && inf->nomsg) |
cce74817 JM |
1986 | inf_continue (inf); |
1987 | else | |
1988 | inf_signal (inf, sig); | |
1989 | } | |
c906108c SS |
1990 | else if (inf->wait.exc.reply != MACH_PORT_NULL) |
1991 | /* We received an exception to which we have chosen not to forward, so | |
1992 | abort the faulting thread, which will perhaps retake it. */ | |
1993 | { | |
1994 | proc_abort (inf->wait.thread, 1); | |
8a3fe4f8 | 1995 | warning (_("Aborting %s with unforwarded exception %s."), |
c906108c | 1996 | proc_string (inf->wait.thread), |
2ea28649 | 1997 | gdb_signal_to_name (inf->wait.status.value.sig)); |
c906108c SS |
1998 | } |
1999 | ||
2000 | if (port_msgs_queued (inf->event_port)) | |
2001 | /* If there are still messages in our event queue, don't bother resuming | |
0963b4bd | 2002 | the process, as we're just going to stop it right away anyway. */ |
c906108c SS |
2003 | return; |
2004 | ||
2005 | inf_update_procs (inf); | |
2006 | ||
617fd3b5 | 2007 | /* A specific PTID means `step only this process id'. */ |
d7e15655 | 2008 | resume_all = ptid == minus_one_ptid; |
617fd3b5 PA |
2009 | |
2010 | if (resume_all) | |
c906108c SS |
2011 | /* Allow all threads to run, except perhaps single-stepping one. */ |
2012 | { | |
dfd4cc63 | 2013 | inf_debug (inf, "running all threads; tid = %d", |
e99b03dc | 2014 | inferior_ptid.pid ()); |
0963b4bd | 2015 | ptid = inferior_ptid; /* What to step. */ |
c906108c SS |
2016 | inf_set_threads_resume_sc (inf, 0, 1); |
2017 | } | |
2018 | else | |
2019 | /* Just allow a single thread to run. */ | |
2020 | { | |
e38504b3 | 2021 | struct proc *thread = inf_tid_to_thread (inf, ptid.lwp ()); |
d8734c88 | 2022 | |
c5aa993b | 2023 | if (!thread) |
617fd3b5 | 2024 | error (_("Can't run single thread id %s: no such thread!"), |
a068643d TT |
2025 | target_pid_to_str (ptid).c_str ()); |
2026 | inf_debug (inf, "running one thread: %s", | |
2027 | target_pid_to_str (ptid).c_str ()); | |
c906108c SS |
2028 | inf_set_threads_resume_sc (inf, thread, 0); |
2029 | } | |
2030 | ||
2031 | if (step) | |
2032 | { | |
e38504b3 | 2033 | step_thread = inf_tid_to_thread (inf, ptid.lwp ()); |
c5aa993b | 2034 | if (!step_thread) |
617fd3b5 | 2035 | warning (_("Can't step thread id %s: no such thread."), |
a068643d | 2036 | target_pid_to_str (ptid).c_str ()); |
c906108c | 2037 | else |
a068643d TT |
2038 | inf_debug (inf, "stepping thread: %s", |
2039 | target_pid_to_str (ptid).c_str ()); | |
c906108c SS |
2040 | } |
2041 | if (step_thread != inf->step_thread) | |
2042 | inf_set_step_thread (inf, step_thread); | |
2043 | ||
2044 | inf_debug (inf, "here we go..."); | |
2045 | inf_resume (inf); | |
2046 | } | |
942fd805 | 2047 | |
c906108c | 2048 | \f |
f6ac5f3d PA |
2049 | void |
2050 | gnu_nat_target::kill () | |
c906108c | 2051 | { |
c289427b | 2052 | struct proc *task = gnu_current_inf->task; |
d8734c88 | 2053 | |
c906108c SS |
2054 | if (task) |
2055 | { | |
2056 | proc_debug (task, "terminating..."); | |
2057 | task_terminate (task->port); | |
c289427b | 2058 | inf_set_pid (gnu_current_inf, -1); |
c906108c | 2059 | } |
bc1e6c81 | 2060 | target_mourn_inferior (inferior_ptid); |
c906108c SS |
2061 | } |
2062 | ||
2063 | /* Clean up after the inferior dies. */ | |
f6ac5f3d PA |
2064 | void |
2065 | gnu_nat_target::mourn_inferior () | |
c906108c | 2066 | { |
c289427b PA |
2067 | inf_debug (gnu_current_inf, "rip"); |
2068 | inf_detach (gnu_current_inf); | |
f6ac5f3d | 2069 | inf_child_target::mourn_inferior (); |
c906108c | 2070 | } |
942fd805 | 2071 | |
c906108c SS |
2072 | \f |
2073 | /* Fork an inferior process, and start debugging it. */ | |
2074 | ||
2075 | /* Set INFERIOR_PID to the first thread available in the child, if any. */ | |
2076 | static int | |
fba45db2 | 2077 | inf_pick_first_thread (void) |
c906108c | 2078 | { |
c289427b | 2079 | if (gnu_current_inf->task && gnu_current_inf->threads) |
c906108c | 2080 | /* The first thread. */ |
c289427b | 2081 | return gnu_current_inf->threads->tid; |
c906108c SS |
2082 | else |
2083 | /* What may be the next thread. */ | |
2084 | return next_thread_id; | |
2085 | } | |
2086 | ||
2087 | static struct inf * | |
fba45db2 | 2088 | cur_inf (void) |
c906108c | 2089 | { |
c289427b PA |
2090 | if (!gnu_current_inf) |
2091 | gnu_current_inf = make_inf (); | |
2092 | return gnu_current_inf; | |
c906108c SS |
2093 | } |
2094 | ||
a9617a42 TS |
2095 | static void |
2096 | gnu_ptrace_me (void) | |
2097 | { | |
2098 | /* We're in the child; make this process stop as soon as it execs. */ | |
2099 | struct inf *inf = cur_inf (); | |
2100 | inf_debug (inf, "tracing self"); | |
2101 | if (ptrace (PTRACE_TRACEME) != 0) | |
0db8980c | 2102 | trace_start_error_with_name ("ptrace"); |
a9617a42 TS |
2103 | } |
2104 | ||
f6ac5f3d PA |
2105 | void |
2106 | gnu_nat_target::create_inferior (const char *exec_file, | |
2107 | const std::string &allargs, | |
2108 | char **env, | |
2109 | int from_tty) | |
c906108c SS |
2110 | { |
2111 | struct inf *inf = cur_inf (); | |
c8fbd44a | 2112 | inferior *inferior = current_inferior (); |
b4d1e8c7 | 2113 | int pid; |
c906108c | 2114 | |
b4d1e8c7 | 2115 | inf_debug (inf, "creating inferior"); |
c906108c | 2116 | |
c8fbd44a SM |
2117 | if (!inf->target_is_pushed (this)) |
2118 | inf->push_target (this); | |
078f2fc9 | 2119 | |
a9617a42 | 2120 | pid = fork_inferior (exec_file, allargs, env, gnu_ptrace_me, |
dda83cd7 | 2121 | NULL, NULL, NULL, NULL); |
c906108c | 2122 | |
2090129c SDJ |
2123 | /* We have something that executes now. We'll be running through |
2124 | the shell at this point (if startup-with-shell is true), but the | |
2125 | pid shouldn't change. */ | |
975f8708 PA |
2126 | thread_info *thr = add_thread_silent (this, ptid_t (pid)); |
2127 | switch_to_thread (thr); | |
2090129c | 2128 | |
b4d1e8c7 PA |
2129 | /* Attach to the now stopped child, which is actually a shell... */ |
2130 | inf_debug (inf, "attaching to child: %d", pid); | |
c906108c | 2131 | |
b4d1e8c7 | 2132 | inf_attach (inf, pid); |
617fd3b5 | 2133 | |
c82f56d9 | 2134 | inf->pending_execs = 1; |
b4d1e8c7 PA |
2135 | inf->nomsg = 1; |
2136 | inf->traced = 1; | |
c906108c | 2137 | |
b4d1e8c7 | 2138 | /* Now let the child run again, knowing that it will stop |
0963b4bd | 2139 | immediately because of the ptrace. */ |
b4d1e8c7 PA |
2140 | inf_resume (inf); |
2141 | ||
2142 | /* We now have thread info. */ | |
14a8ad62 | 2143 | thread_change_ptid (this, inferior_ptid, |
fd79271b | 2144 | ptid_t (inf->pid, inf_pick_first_thread (), 0)); |
c906108c | 2145 | |
2090129c SDJ |
2146 | gdb_startup_inferior (pid, START_INFERIOR_TRAPS_EXPECTED); |
2147 | ||
c82f56d9 | 2148 | inf->pending_execs = 0; |
c752a4cc TS |
2149 | /* Get rid of the old shell threads. */ |
2150 | prune_threads (); | |
c906108c | 2151 | |
cce74817 | 2152 | inf_validate_procinfo (inf); |
c906108c SS |
2153 | inf_update_signal_thread (inf); |
2154 | inf_set_traced (inf, inf->want_signals); | |
2155 | ||
2156 | /* Execing the process will have trashed our exception ports; steal them | |
2157 | back (or make sure they're restored if the user wants that). */ | |
2158 | if (inf->want_exceptions) | |
2159 | inf_steal_exc_ports (inf); | |
2160 | else | |
2161 | inf_restore_exc_ports (inf); | |
c906108c SS |
2162 | } |
2163 | ||
c906108c | 2164 | \f |
c906108c SS |
2165 | /* Attach to process PID, then initialize for debugging it |
2166 | and wait for the trace-trap that results from attaching. */ | |
f6ac5f3d PA |
2167 | void |
2168 | gnu_nat_target::attach (const char *args, int from_tty) | |
c906108c SS |
2169 | { |
2170 | int pid; | |
c906108c | 2171 | struct inf *inf = cur_inf (); |
181e7f93 | 2172 | struct inferior *inferior; |
c906108c | 2173 | |
74164c56 | 2174 | pid = parse_pid_to_attach (args); |
c906108c | 2175 | |
74164c56 | 2176 | if (pid == getpid ()) /* Trying to masturbate? */ |
8a3fe4f8 | 2177 | error (_("I refuse to debug myself!")); |
c906108c SS |
2178 | |
2179 | if (from_tty) | |
2180 | { | |
d9fa87f4 | 2181 | const char *exec_file = get_exec_file (0); |
c906108c SS |
2182 | |
2183 | if (exec_file) | |
2184 | printf_unfiltered ("Attaching to program `%s', pid %d\n", | |
2185 | exec_file, pid); | |
2186 | else | |
2187 | printf_unfiltered ("Attaching to pid %d\n", pid); | |
c906108c SS |
2188 | } |
2189 | ||
2190 | inf_debug (inf, "attaching to pid: %d", pid); | |
2191 | ||
2192 | inf_attach (inf, pid); | |
a9ab7422 | 2193 | |
6c95b8df | 2194 | inferior = current_inferior (); |
02980c56 SM |
2195 | inferior->push_target (this); |
2196 | ||
6c95b8df | 2197 | inferior_appeared (inferior, pid); |
181e7f93 | 2198 | inferior->attach_flag = 1; |
7f9f62ba | 2199 | |
c906108c SS |
2200 | inf_update_procs (inf); |
2201 | ||
975f8708 PA |
2202 | thread_info *thr |
2203 | = find_thread_ptid (this, ptid_t (pid, inf_pick_first_thread ())); | |
2204 | switch_to_thread (thr); | |
c906108c | 2205 | |
b83266a0 SS |
2206 | /* We have to initialize the terminal settings now, since the code |
2207 | below might try to restore them. */ | |
223ffa71 | 2208 | target_terminal::init (); |
c5aa993b | 2209 | |
c906108c SS |
2210 | /* If the process was stopped before we attached, make it continue the next |
2211 | time the user does a continue. */ | |
cce74817 JM |
2212 | inf_validate_procinfo (inf); |
2213 | ||
2214 | inf_update_signal_thread (inf); | |
2215 | inf_set_traced (inf, inf->want_signals); | |
c906108c | 2216 | |
0963b4bd MS |
2217 | #if 0 /* Do we need this? */ |
2218 | renumber_threads (0); /* Give our threads reasonable names. */ | |
c906108c SS |
2219 | #endif |
2220 | } | |
942fd805 | 2221 | |
c906108c SS |
2222 | \f |
2223 | /* Take a program previously attached to and detaches it. | |
2224 | The program resumes execution and will no longer stop | |
2225 | on signals, etc. We'd better not have left any breakpoints | |
2226 | in the program or it'll die when it hits one. For this | |
2227 | to work, it may be necessary for the process to have been | |
2228 | previously attached. It *might* work if the program was | |
2229 | started via fork. */ | |
f6ac5f3d PA |
2230 | void |
2231 | gnu_nat_target::detach (inferior *inf, int from_tty) | |
c906108c SS |
2232 | { |
2233 | if (from_tty) | |
2234 | { | |
d9fa87f4 | 2235 | const char *exec_file = get_exec_file (0); |
d8734c88 | 2236 | |
c906108c SS |
2237 | if (exec_file) |
2238 | printf_unfiltered ("Detaching from program `%s' pid %d\n", | |
c289427b | 2239 | exec_file, gnu_current_inf->pid); |
c906108c | 2240 | else |
c289427b | 2241 | printf_unfiltered ("Detaching from pid %d\n", gnu_current_inf->pid); |
c906108c | 2242 | } |
c5aa993b | 2243 | |
c289427b | 2244 | inf_detach (gnu_current_inf); |
c906108c | 2245 | |
975f8708 PA |
2246 | switch_to_no_thread (); |
2247 | detach_inferior (inf); | |
c906108c | 2248 | |
2d0a338c | 2249 | maybe_unpush_target (); |
c906108c | 2250 | } |
942fd805 | 2251 | \f |
c906108c | 2252 | |
f6ac5f3d PA |
2253 | void |
2254 | gnu_nat_target::stop (ptid_t ptid) | |
c906108c | 2255 | { |
f6ac5f3d | 2256 | error (_("stop target function not implemented")); |
c906108c SS |
2257 | } |
2258 | ||
57810aa7 | 2259 | bool |
f6ac5f3d | 2260 | gnu_nat_target::thread_alive (ptid_t ptid) |
c906108c | 2261 | { |
c289427b PA |
2262 | inf_update_procs (gnu_current_inf); |
2263 | return !!inf_tid_to_thread (gnu_current_inf, | |
e38504b3 | 2264 | ptid.lwp ()); |
c906108c | 2265 | } |
942fd805 | 2266 | |
c906108c | 2267 | \f |
942fd805 MK |
2268 | /* Read inferior task's LEN bytes from ADDR and copy it to MYADDR in |
2269 | gdb's address space. Return 0 on failure; number of bytes read | |
2270 | otherwise. */ | |
9b3f3ee6 TS |
2271 | static int |
2272 | gnu_read_inferior (task_t task, CORE_ADDR addr, gdb_byte *myaddr, int length) | |
c906108c | 2273 | { |
0947023d | 2274 | kern_return_t err; |
c906108c SS |
2275 | vm_address_t low_address = (vm_address_t) trunc_page (addr); |
2276 | vm_size_t aligned_length = | |
c5aa993b JM |
2277 | (vm_size_t) round_page (addr + length) - low_address; |
2278 | pointer_t copied; | |
25c0bd04 | 2279 | mach_msg_type_number_t copy_count; |
c906108c | 2280 | |
0963b4bd | 2281 | /* Get memory from inferior with page aligned addresses. */ |
c906108c SS |
2282 | err = vm_read (task, low_address, aligned_length, &copied, ©_count); |
2283 | if (err) | |
2284 | return 0; | |
2285 | ||
0963b4bd MS |
2286 | err = hurd_safe_copyin (myaddr, (void *) (addr - low_address + copied), |
2287 | length); | |
c906108c SS |
2288 | if (err) |
2289 | { | |
8a3fe4f8 | 2290 | warning (_("Read from inferior faulted: %s"), safe_strerror (err)); |
c906108c SS |
2291 | length = 0; |
2292 | } | |
2293 | ||
2294 | err = vm_deallocate (mach_task_self (), copied, copy_count); | |
2295 | if (err) | |
0963b4bd MS |
2296 | warning (_("gnu_read_inferior vm_deallocate failed: %s"), |
2297 | safe_strerror (err)); | |
c906108c SS |
2298 | |
2299 | return length; | |
2300 | } | |
2301 | ||
2302 | #define CHK_GOTO_OUT(str,ret) \ | |
2303 | do if (ret != KERN_SUCCESS) { errstr = #str; goto out; } while(0) | |
2304 | ||
c5aa993b JM |
2305 | struct vm_region_list |
2306 | { | |
c906108c | 2307 | struct vm_region_list *next; |
c5aa993b JM |
2308 | vm_prot_t protection; |
2309 | vm_address_t start; | |
2310 | vm_size_t length; | |
c906108c SS |
2311 | }; |
2312 | ||
c5aa993b | 2313 | struct obstack region_obstack; |
c906108c | 2314 | |
942fd805 MK |
2315 | /* Write gdb's LEN bytes from MYADDR and copy it to ADDR in inferior |
2316 | task's address space. */ | |
9b3f3ee6 TS |
2317 | static int |
2318 | gnu_write_inferior (task_t task, CORE_ADDR addr, | |
2319 | const gdb_byte *myaddr, int length) | |
c906108c | 2320 | { |
0947023d | 2321 | kern_return_t err; |
c5aa993b JM |
2322 | vm_address_t low_address = (vm_address_t) trunc_page (addr); |
2323 | vm_size_t aligned_length = | |
2324 | (vm_size_t) round_page (addr + length) - low_address; | |
2325 | pointer_t copied; | |
25c0bd04 | 2326 | mach_msg_type_number_t copy_count; |
c5aa993b | 2327 | int deallocate = 0; |
c906108c | 2328 | |
924514e1 | 2329 | const char *errstr = "Bug in gnu_write_inferior"; |
c906108c SS |
2330 | |
2331 | struct vm_region_list *region_element; | |
be903358 | 2332 | struct vm_region_list *region_head = NULL; |
c906108c | 2333 | |
0963b4bd | 2334 | /* Get memory from inferior with page aligned addresses. */ |
c906108c SS |
2335 | err = vm_read (task, |
2336 | low_address, | |
2337 | aligned_length, | |
2338 | &copied, | |
2339 | ©_count); | |
2340 | CHK_GOTO_OUT ("gnu_write_inferior vm_read failed", err); | |
2341 | ||
2342 | deallocate++; | |
2343 | ||
96ffcb62 | 2344 | err = hurd_safe_copyout ((void *) (addr - low_address + copied), |
942fd805 | 2345 | myaddr, length); |
c906108c SS |
2346 | CHK_GOTO_OUT ("Write to inferior faulted", err); |
2347 | ||
2348 | obstack_init (®ion_obstack); | |
2349 | ||
2350 | /* Do writes atomically. | |
942fd805 | 2351 | First check for holes and unwritable memory. */ |
c906108c | 2352 | { |
c5aa993b JM |
2353 | vm_size_t remaining_length = aligned_length; |
2354 | vm_address_t region_address = low_address; | |
c906108c SS |
2355 | |
2356 | struct vm_region_list *scan; | |
2357 | ||
c5aa993b | 2358 | while (region_address < low_address + aligned_length) |
c906108c SS |
2359 | { |
2360 | vm_prot_t protection; | |
2361 | vm_prot_t max_protection; | |
2362 | vm_inherit_t inheritance; | |
2363 | boolean_t shared; | |
2364 | mach_port_t object_name; | |
2365 | vm_offset_t offset; | |
c5aa993b JM |
2366 | vm_size_t region_length = remaining_length; |
2367 | vm_address_t old_address = region_address; | |
2368 | ||
c906108c SS |
2369 | err = vm_region (task, |
2370 | ®ion_address, | |
2371 | ®ion_length, | |
2372 | &protection, | |
2373 | &max_protection, | |
2374 | &inheritance, | |
2375 | &shared, | |
2376 | &object_name, | |
2377 | &offset); | |
2378 | CHK_GOTO_OUT ("vm_region failed", err); | |
2379 | ||
0963b4bd | 2380 | /* Check for holes in memory. */ |
c906108c SS |
2381 | if (old_address != region_address) |
2382 | { | |
a9a758e3 | 2383 | warning (_("No memory at 0x%lx. Nothing written"), |
c906108c SS |
2384 | old_address); |
2385 | err = KERN_SUCCESS; | |
2386 | length = 0; | |
2387 | goto out; | |
2388 | } | |
2389 | ||
2390 | if (!(max_protection & VM_PROT_WRITE)) | |
2391 | { | |
a9a758e3 | 2392 | warning (_("Memory at address 0x%lx is unwritable. " |
0963b4bd | 2393 | "Nothing written"), |
c906108c SS |
2394 | old_address); |
2395 | err = KERN_SUCCESS; | |
2396 | length = 0; | |
2397 | goto out; | |
2398 | } | |
2399 | ||
0963b4bd | 2400 | /* Chain the regions for later use. */ |
8d749320 | 2401 | region_element = XOBNEW (®ion_obstack, struct vm_region_list); |
c5aa993b | 2402 | |
c906108c | 2403 | region_element->protection = protection; |
c5aa993b JM |
2404 | region_element->start = region_address; |
2405 | region_element->length = region_length; | |
c906108c | 2406 | |
0963b4bd | 2407 | /* Chain the regions along with protections. */ |
c906108c | 2408 | region_element->next = region_head; |
c5aa993b JM |
2409 | region_head = region_element; |
2410 | ||
c906108c SS |
2411 | region_address += region_length; |
2412 | remaining_length = remaining_length - region_length; | |
2413 | } | |
2414 | ||
2415 | /* If things fail after this, we give up. | |
942fd805 | 2416 | Somebody is messing up inferior_task's mappings. */ |
c5aa993b | 2417 | |
0963b4bd | 2418 | /* Enable writes to the chained vm regions. */ |
c906108c SS |
2419 | for (scan = region_head; scan; scan = scan->next) |
2420 | { | |
c906108c SS |
2421 | if (!(scan->protection & VM_PROT_WRITE)) |
2422 | { | |
2423 | err = vm_protect (task, | |
2424 | scan->start, | |
2425 | scan->length, | |
2426 | FALSE, | |
2427 | scan->protection | VM_PROT_WRITE); | |
2428 | CHK_GOTO_OUT ("vm_protect: enable write failed", err); | |
2429 | } | |
2430 | } | |
2431 | ||
2432 | err = vm_write (task, | |
2433 | low_address, | |
2434 | copied, | |
2435 | aligned_length); | |
2436 | CHK_GOTO_OUT ("vm_write failed", err); | |
c5aa993b | 2437 | |
0963b4bd | 2438 | /* Set up the original region protections, if they were changed. */ |
c906108c SS |
2439 | for (scan = region_head; scan; scan = scan->next) |
2440 | { | |
c906108c SS |
2441 | if (!(scan->protection & VM_PROT_WRITE)) |
2442 | { | |
2443 | err = vm_protect (task, | |
2444 | scan->start, | |
2445 | scan->length, | |
2446 | FALSE, | |
2447 | scan->protection); | |
2448 | CHK_GOTO_OUT ("vm_protect: enable write failed", err); | |
2449 | } | |
2450 | } | |
2451 | } | |
2452 | ||
c5aa993b | 2453 | out: |
c906108c SS |
2454 | if (deallocate) |
2455 | { | |
2456 | obstack_free (®ion_obstack, 0); | |
c5aa993b | 2457 | |
c906108c SS |
2458 | (void) vm_deallocate (mach_task_self (), |
2459 | copied, | |
2460 | copy_count); | |
2461 | } | |
2462 | ||
2463 | if (err != KERN_SUCCESS) | |
2464 | { | |
8a3fe4f8 | 2465 | warning (_("%s: %s"), errstr, mach_error_string (err)); |
c906108c SS |
2466 | return 0; |
2467 | } | |
2468 | ||
2469 | return length; | |
2470 | } | |
942fd805 | 2471 | |
c906108c | 2472 | \f |
9b3f3ee6 | 2473 | |
edcc890f YQ |
2474 | /* Implement the to_xfer_partial target_ops method for |
2475 | TARGET_OBJECT_MEMORY. */ | |
9b3f3ee6 | 2476 | |
9b409511 | 2477 | static enum target_xfer_status |
9b3f3ee6 | 2478 | gnu_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 | 2479 | CORE_ADDR memaddr, ULONGEST len, ULONGEST *xfered_len) |
c906108c | 2480 | { |
c289427b PA |
2481 | task_t task = (gnu_current_inf |
2482 | ? (gnu_current_inf->task | |
2483 | ? gnu_current_inf->task->port : 0) | |
942fd805 | 2484 | : 0); |
9b3f3ee6 | 2485 | int res; |
c906108c SS |
2486 | |
2487 | if (task == MACH_PORT_NULL) | |
9b3f3ee6 TS |
2488 | return TARGET_XFER_E_IO; |
2489 | ||
2490 | if (writebuf != NULL) | |
2491 | { | |
2492 | inf_debug (gnu_current_inf, "writing %s[%s] <-- %s", | |
b55e14c7 | 2493 | paddress (target_gdbarch (), memaddr), pulongest (len), |
9b3f3ee6 TS |
2494 | host_address_to_string (writebuf)); |
2495 | res = gnu_write_inferior (task, memaddr, writebuf, len); | |
2496 | } | |
c906108c SS |
2497 | else |
2498 | { | |
9b3f3ee6 | 2499 | inf_debug (gnu_current_inf, "reading %s[%s] --> %s", |
b55e14c7 | 2500 | paddress (target_gdbarch (), memaddr), pulongest (len), |
9b3f3ee6 TS |
2501 | host_address_to_string (readbuf)); |
2502 | res = gnu_read_inferior (task, memaddr, readbuf, len); | |
2503 | } | |
9b409511 | 2504 | gdb_assert (res >= 0); |
9b3f3ee6 TS |
2505 | if (res == 0) |
2506 | return TARGET_XFER_E_IO; | |
9b409511 YQ |
2507 | else |
2508 | { | |
2509 | *xfered_len = (ULONGEST) res; | |
2510 | return TARGET_XFER_OK; | |
2511 | } | |
9b3f3ee6 TS |
2512 | } |
2513 | ||
9c4ac400 ST |
2514 | /* GNU does not have auxv, but we can at least fake the AT_ENTRY entry for PIE |
2515 | binaries. */ | |
2516 | static enum target_xfer_status | |
2517 | gnu_xfer_auxv (gdb_byte *readbuf, const gdb_byte *writebuf, | |
2518 | CORE_ADDR memaddr, ULONGEST len, ULONGEST *xfered_len) | |
2519 | { | |
2520 | task_t task = (gnu_current_inf | |
2521 | ? (gnu_current_inf->task | |
2522 | ? gnu_current_inf->task->port : 0) | |
2523 | : 0); | |
2524 | process_t proc; | |
9c4ac400 ST |
2525 | kern_return_t err; |
2526 | vm_address_t entry; | |
2527 | ElfW(auxv_t) auxv[2]; | |
2528 | ||
2529 | if (task == MACH_PORT_NULL) | |
2530 | return TARGET_XFER_E_IO; | |
2531 | if (writebuf != NULL) | |
2532 | return TARGET_XFER_E_IO; | |
2533 | ||
2534 | if (memaddr == sizeof (auxv)) | |
2535 | return TARGET_XFER_EOF; | |
2536 | if (memaddr > sizeof (auxv)) | |
2537 | return TARGET_XFER_E_IO; | |
2538 | ||
2539 | err = proc_task2proc (proc_server, task, &proc); | |
2540 | if (err != 0) | |
2541 | return TARGET_XFER_E_IO; | |
2542 | ||
2543 | /* Get entry from proc server. */ | |
2544 | err = proc_get_entry (proc, &entry); | |
2545 | if (err != 0) | |
2546 | return TARGET_XFER_E_IO; | |
2547 | ||
2548 | /* Fake auxv entry. */ | |
2549 | auxv[0].a_type = AT_ENTRY; | |
2550 | auxv[0].a_un.a_val = entry; | |
2551 | auxv[1].a_type = AT_NULL; | |
2552 | auxv[1].a_un.a_val = 0; | |
2553 | ||
2554 | inf_debug (gnu_current_inf, "reading auxv %s[%s] --> %s", | |
2555 | paddress (target_gdbarch (), memaddr), pulongest (len), | |
2556 | host_address_to_string (readbuf)); | |
2557 | ||
2558 | if (memaddr + len > sizeof (auxv)) | |
2559 | len = sizeof (auxv) - memaddr; | |
2560 | ||
2561 | memcpy (readbuf, (gdb_byte *) &auxv + memaddr, len); | |
2562 | *xfered_len = len; | |
2563 | ||
2564 | return TARGET_XFER_OK; | |
2565 | } | |
2566 | ||
9b3f3ee6 TS |
2567 | /* Target to_xfer_partial implementation. */ |
2568 | ||
f6ac5f3d PA |
2569 | enum target_xfer_status |
2570 | gnu_nat_target::xfer_partial (enum target_object object, | |
2571 | const char *annex, gdb_byte *readbuf, | |
2572 | const gdb_byte *writebuf, ULONGEST offset, | |
2573 | ULONGEST len, ULONGEST *xfered_len) | |
9b3f3ee6 TS |
2574 | { |
2575 | switch (object) | |
2576 | { | |
2577 | case TARGET_OBJECT_MEMORY: | |
9b409511 | 2578 | return gnu_xfer_memory (readbuf, writebuf, offset, len, xfered_len); |
9c4ac400 ST |
2579 | case TARGET_OBJECT_AUXV: |
2580 | return gnu_xfer_auxv (readbuf, writebuf, offset, len, xfered_len); | |
9b3f3ee6 | 2581 | default: |
2ed4b548 | 2582 | return TARGET_XFER_E_IO; |
c906108c SS |
2583 | } |
2584 | } | |
942fd805 | 2585 | |
57e76fac | 2586 | /* Call FUNC on each memory region in the task. */ |
f6ac5f3d PA |
2587 | |
2588 | int | |
2589 | gnu_nat_target::find_memory_regions (find_memory_region_ftype func, | |
2590 | void *data) | |
57e76fac | 2591 | { |
0947023d | 2592 | kern_return_t err; |
57e76fac MS |
2593 | task_t task; |
2594 | vm_address_t region_address, last_region_address, last_region_end; | |
2595 | vm_prot_t last_protection; | |
2596 | ||
c289427b | 2597 | if (gnu_current_inf == 0 || gnu_current_inf->task == 0) |
57e76fac | 2598 | return 0; |
c289427b | 2599 | task = gnu_current_inf->task->port; |
57e76fac MS |
2600 | if (task == MACH_PORT_NULL) |
2601 | return 0; | |
2602 | ||
2603 | region_address = last_region_address = last_region_end = VM_MIN_ADDRESS; | |
2604 | last_protection = VM_PROT_NONE; | |
2605 | while (region_address < VM_MAX_ADDRESS) | |
2606 | { | |
2607 | vm_prot_t protection; | |
2608 | vm_prot_t max_protection; | |
2609 | vm_inherit_t inheritance; | |
2610 | boolean_t shared; | |
2611 | mach_port_t object_name; | |
2612 | vm_offset_t offset; | |
2613 | vm_size_t region_length = VM_MAX_ADDRESS - region_address; | |
57e76fac MS |
2614 | |
2615 | err = vm_region (task, | |
2616 | ®ion_address, | |
2617 | ®ion_length, | |
2618 | &protection, | |
2619 | &max_protection, | |
2620 | &inheritance, | |
2621 | &shared, | |
2622 | &object_name, | |
2623 | &offset); | |
2624 | if (err == KERN_NO_SPACE) | |
2625 | break; | |
2626 | if (err != KERN_SUCCESS) | |
2627 | { | |
8a3fe4f8 | 2628 | warning (_("vm_region failed: %s"), mach_error_string (err)); |
57e76fac MS |
2629 | return -1; |
2630 | } | |
2631 | ||
2632 | if (protection == last_protection && region_address == last_region_end) | |
2633 | /* This region is contiguous with and indistinguishable from | |
2634 | the previous one, so we just extend that one. */ | |
2635 | last_region_end = region_address += region_length; | |
2636 | else | |
2637 | { | |
2638 | /* This region is distinct from the last one we saw, so report | |
2639 | that previous one. */ | |
2640 | if (last_protection != VM_PROT_NONE) | |
2641 | (*func) (last_region_address, | |
2642 | last_region_end - last_region_address, | |
2643 | last_protection & VM_PROT_READ, | |
2644 | last_protection & VM_PROT_WRITE, | |
2645 | last_protection & VM_PROT_EXECUTE, | |
4f69f4c2 | 2646 | 1, /* MODIFIED is unknown, pass it as true. */ |
57e76fac MS |
2647 | data); |
2648 | last_region_address = region_address; | |
2649 | last_region_end = region_address += region_length; | |
2650 | last_protection = protection; | |
2651 | } | |
2652 | } | |
47f21bcc | 2653 | |
1a113c93 MS |
2654 | /* Report the final region. */ |
2655 | if (last_region_end > last_region_address && last_protection != VM_PROT_NONE) | |
2656 | (*func) (last_region_address, last_region_end - last_region_address, | |
2657 | last_protection & VM_PROT_READ, | |
2658 | last_protection & VM_PROT_WRITE, | |
2659 | last_protection & VM_PROT_EXECUTE, | |
4f69f4c2 | 2660 | 1, /* MODIFIED is unknown, pass it as true. */ |
1a113c93 | 2661 | data); |
47f21bcc MS |
2662 | |
2663 | return 0; | |
57e76fac MS |
2664 | } |
2665 | ||
c906108c | 2666 | \f |
ed9a39eb | 2667 | /* Return printable description of proc. */ |
f90b2b1d | 2668 | char * |
ed9a39eb JM |
2669 | proc_string (struct proc *proc) |
2670 | { | |
2671 | static char tid_str[80]; | |
d8734c88 | 2672 | |
ed9a39eb | 2673 | if (proc_is_task (proc)) |
8c042590 | 2674 | xsnprintf (tid_str, sizeof (tid_str), "process %d", proc->inf->pid); |
ed9a39eb | 2675 | else |
8c042590 PM |
2676 | xsnprintf (tid_str, sizeof (tid_str), "Thread %d.%d", |
2677 | proc->inf->pid, proc->tid); | |
ed9a39eb JM |
2678 | return tid_str; |
2679 | } | |
2680 | ||
a068643d | 2681 | std::string |
f6ac5f3d | 2682 | gnu_nat_target::pid_to_str (ptid_t ptid) |
ed9a39eb | 2683 | { |
c289427b | 2684 | struct inf *inf = gnu_current_inf; |
e38504b3 | 2685 | int tid = ptid.lwp (); |
ed9a39eb JM |
2686 | struct proc *thread = inf_tid_to_thread (inf, tid); |
2687 | ||
2688 | if (thread) | |
2689 | return proc_string (thread); | |
2690 | else | |
a068643d | 2691 | return string_printf ("bogus thread id %d", tid); |
ed9a39eb | 2692 | } |
942fd805 | 2693 | |
c906108c | 2694 | \f |
c906108c SS |
2695 | /* User task commands. */ |
2696 | ||
28578e6b YQ |
2697 | static struct cmd_list_element *set_task_cmd_list = 0; |
2698 | static struct cmd_list_element *show_task_cmd_list = 0; | |
c906108c SS |
2699 | /* User thread commands. */ |
2700 | ||
2701 | /* Commands with a prefix of `set/show thread'. */ | |
2702 | extern struct cmd_list_element *thread_cmd_list; | |
2703 | struct cmd_list_element *set_thread_cmd_list = NULL; | |
2704 | struct cmd_list_element *show_thread_cmd_list = NULL; | |
2705 | ||
2706 | /* Commands with a prefix of `set/show thread default'. */ | |
2707 | struct cmd_list_element *set_thread_default_cmd_list = NULL; | |
2708 | struct cmd_list_element *show_thread_default_cmd_list = NULL; | |
2709 | ||
2710 | static void | |
981a3fb3 | 2711 | set_thread_cmd (const char *args, int from_tty) |
c906108c | 2712 | { |
0963b4bd MS |
2713 | printf_unfiltered ("\"set thread\" must be followed by the " |
2714 | "name of a thread property, or \"default\".\n"); | |
c906108c SS |
2715 | } |
2716 | ||
2717 | static void | |
981a3fb3 | 2718 | show_thread_cmd (const char *args, int from_tty) |
c906108c | 2719 | { |
0963b4bd MS |
2720 | printf_unfiltered ("\"show thread\" must be followed by the " |
2721 | "name of a thread property, or \"default\".\n"); | |
c906108c SS |
2722 | } |
2723 | ||
2724 | static void | |
981a3fb3 | 2725 | set_thread_default_cmd (const char *args, int from_tty) |
c906108c | 2726 | { |
0963b4bd MS |
2727 | printf_unfiltered ("\"set thread default\" must be followed " |
2728 | "by the name of a thread property.\n"); | |
c906108c SS |
2729 | } |
2730 | ||
2731 | static void | |
981a3fb3 | 2732 | show_thread_default_cmd (const char *args, int from_tty) |
c906108c | 2733 | { |
0963b4bd MS |
2734 | printf_unfiltered ("\"show thread default\" must be followed " |
2735 | "by the name of a thread property.\n"); | |
c906108c SS |
2736 | } |
2737 | ||
2738 | static int | |
924514e1 | 2739 | parse_int_arg (const char *args, const char *cmd_prefix) |
c906108c SS |
2740 | { |
2741 | if (args) | |
2742 | { | |
2743 | char *arg_end; | |
2744 | int val = strtoul (args, &arg_end, 10); | |
d8734c88 | 2745 | |
c906108c SS |
2746 | if (*args && *arg_end == '\0') |
2747 | return val; | |
2748 | } | |
0963b4bd MS |
2749 | error (_("Illegal argument for \"%s\" command, should be an integer."), |
2750 | cmd_prefix); | |
c906108c SS |
2751 | } |
2752 | ||
2753 | static int | |
924514e1 TS |
2754 | _parse_bool_arg (const char *args, const char *t_val, const char *f_val, |
2755 | const char *cmd_prefix) | |
c906108c SS |
2756 | { |
2757 | if (!args || strcmp (args, t_val) == 0) | |
2758 | return 1; | |
2759 | else if (strcmp (args, f_val) == 0) | |
2760 | return 0; | |
2761 | else | |
0963b4bd MS |
2762 | error (_("Illegal argument for \"%s\" command, " |
2763 | "should be \"%s\" or \"%s\"."), | |
c906108c SS |
2764 | cmd_prefix, t_val, f_val); |
2765 | } | |
2766 | ||
2767 | #define parse_bool_arg(args, cmd_prefix) \ | |
2768 | _parse_bool_arg (args, "on", "off", cmd_prefix) | |
2769 | ||
2770 | static void | |
924514e1 | 2771 | check_empty (const char *args, const char *cmd_prefix) |
c906108c SS |
2772 | { |
2773 | if (args) | |
8a3fe4f8 | 2774 | error (_("Garbage after \"%s\" command: `%s'"), cmd_prefix, args); |
c906108c SS |
2775 | } |
2776 | ||
2777 | /* Returns the alive thread named by INFERIOR_PID, or signals an error. */ | |
2778 | static struct proc * | |
fba45db2 | 2779 | cur_thread (void) |
c906108c SS |
2780 | { |
2781 | struct inf *inf = cur_inf (); | |
617fd3b5 | 2782 | struct proc *thread = inf_tid_to_thread (inf, |
e38504b3 | 2783 | inferior_ptid.lwp ()); |
c906108c | 2784 | if (!thread) |
8a3fe4f8 | 2785 | error (_("No current thread.")); |
c906108c SS |
2786 | return thread; |
2787 | } | |
2788 | ||
2789 | /* Returns the current inferior, but signals an error if it has no task. */ | |
2790 | static struct inf * | |
fba45db2 | 2791 | active_inf (void) |
c906108c SS |
2792 | { |
2793 | struct inf *inf = cur_inf (); | |
d8734c88 | 2794 | |
c5aa993b | 2795 | if (!inf->task) |
8a3fe4f8 | 2796 | error (_("No current process.")); |
c906108c SS |
2797 | return inf; |
2798 | } | |
942fd805 | 2799 | |
c906108c SS |
2800 | \f |
2801 | static void | |
785102a7 | 2802 | set_task_pause_cmd (int arg, int from_tty) |
c906108c SS |
2803 | { |
2804 | struct inf *inf = cur_inf (); | |
2805 | int old_sc = inf->pause_sc; | |
2806 | ||
785102a7 | 2807 | inf->pause_sc = arg; |
c906108c SS |
2808 | |
2809 | if (old_sc == 0 && inf->pause_sc != 0) | |
2810 | /* If the task is currently unsuspended, immediately suspend it, | |
2811 | otherwise wait until the next time it gets control. */ | |
14a8ad62 | 2812 | gnu_target->inf_suspend (inf); |
c906108c SS |
2813 | } |
2814 | ||
785102a7 | 2815 | static void |
5fed81ff | 2816 | set_task_pause_cmd (const char *args, int from_tty) |
785102a7 TS |
2817 | { |
2818 | set_task_pause_cmd (parse_bool_arg (args, "set task pause"), from_tty); | |
2819 | } | |
2820 | ||
c906108c | 2821 | static void |
5fed81ff | 2822 | show_task_pause_cmd (const char *args, int from_tty) |
c906108c SS |
2823 | { |
2824 | struct inf *inf = cur_inf (); | |
d8734c88 | 2825 | |
c906108c SS |
2826 | check_empty (args, "show task pause"); |
2827 | printf_unfiltered ("The inferior task %s suspended while gdb has control.\n", | |
2828 | inf->task | |
2829 | ? (inf->pause_sc == 0 ? "isn't" : "is") | |
2830 | : (inf->pause_sc == 0 ? "won't be" : "will be")); | |
2831 | } | |
2832 | ||
2833 | static void | |
5fed81ff | 2834 | set_task_detach_sc_cmd (const char *args, int from_tty) |
c906108c | 2835 | { |
0963b4bd MS |
2836 | cur_inf ()->detach_sc = parse_int_arg (args, |
2837 | "set task detach-suspend-count"); | |
c906108c SS |
2838 | } |
2839 | ||
2840 | static void | |
5fed81ff | 2841 | show_task_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
2842 | { |
2843 | check_empty (args, "show task detach-suspend-count"); | |
0963b4bd MS |
2844 | printf_unfiltered ("The inferior task will be left with a " |
2845 | "suspend count of %d when detaching.\n", | |
c906108c SS |
2846 | cur_inf ()->detach_sc); |
2847 | } | |
942fd805 | 2848 | |
c906108c SS |
2849 | \f |
2850 | static void | |
5fed81ff | 2851 | set_thread_default_pause_cmd (const char *args, int from_tty) |
c906108c SS |
2852 | { |
2853 | struct inf *inf = cur_inf (); | |
d8734c88 | 2854 | |
c906108c SS |
2855 | inf->default_thread_pause_sc = |
2856 | parse_bool_arg (args, "set thread default pause") ? 0 : 1; | |
2857 | } | |
2858 | ||
2859 | static void | |
5fed81ff | 2860 | show_thread_default_pause_cmd (const char *args, int from_tty) |
c906108c SS |
2861 | { |
2862 | struct inf *inf = cur_inf (); | |
2863 | int sc = inf->default_thread_pause_sc; | |
d8734c88 | 2864 | |
c906108c SS |
2865 | check_empty (args, "show thread default pause"); |
2866 | printf_unfiltered ("New threads %s suspended while gdb has control%s.\n", | |
2867 | sc ? "are" : "aren't", | |
2868 | !sc && inf->pause_sc ? " (but the task is)" : ""); | |
2869 | } | |
2870 | ||
2871 | static void | |
5fed81ff | 2872 | set_thread_default_run_cmd (const char *args, int from_tty) |
c906108c SS |
2873 | { |
2874 | struct inf *inf = cur_inf (); | |
d8734c88 | 2875 | |
c906108c SS |
2876 | inf->default_thread_run_sc = |
2877 | parse_bool_arg (args, "set thread default run") ? 0 : 1; | |
2878 | } | |
2879 | ||
2880 | static void | |
5fed81ff | 2881 | show_thread_default_run_cmd (const char *args, int from_tty) |
c906108c SS |
2882 | { |
2883 | struct inf *inf = cur_inf (); | |
d8734c88 | 2884 | |
c906108c SS |
2885 | check_empty (args, "show thread default run"); |
2886 | printf_unfiltered ("New threads %s allowed to run.\n", | |
2887 | inf->default_thread_run_sc == 0 ? "are" : "aren't"); | |
2888 | } | |
2889 | ||
2890 | static void | |
5fed81ff | 2891 | set_thread_default_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
2892 | { |
2893 | cur_inf ()->default_thread_detach_sc = | |
2894 | parse_int_arg (args, "set thread default detach-suspend-count"); | |
2895 | } | |
2896 | ||
2897 | static void | |
5fed81ff | 2898 | show_thread_default_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
2899 | { |
2900 | check_empty (args, "show thread default detach-suspend-count"); | |
2901 | printf_unfiltered ("New threads will get a detach-suspend-count of %d.\n", | |
2902 | cur_inf ()->default_thread_detach_sc); | |
2903 | } | |
942fd805 | 2904 | |
c906108c SS |
2905 | \f |
2906 | /* Steal a send right called NAME in the inferior task, and make it PROC's | |
2907 | saved exception port. */ | |
14a8ad62 ST |
2908 | void |
2909 | gnu_nat_target::steal_exc_port (struct proc *proc, mach_port_t name) | |
c906108c | 2910 | { |
0947023d | 2911 | kern_return_t err; |
c906108c SS |
2912 | mach_port_t port; |
2913 | mach_msg_type_name_t port_type; | |
2914 | ||
2915 | if (!proc || !proc->inf->task) | |
8a3fe4f8 | 2916 | error (_("No inferior task.")); |
c906108c SS |
2917 | |
2918 | err = mach_port_extract_right (proc->inf->task->port, | |
2919 | name, MACH_MSG_TYPE_COPY_SEND, | |
2920 | &port, &port_type); | |
2921 | if (err) | |
a9a758e3 | 2922 | error (_("Couldn't extract send right %lu from inferior: %s"), |
dc672865 | 2923 | name, safe_strerror (err)); |
c906108c SS |
2924 | |
2925 | if (proc->saved_exc_port) | |
2926 | /* Get rid of our reference to the old one. */ | |
2927 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
2928 | ||
2929 | proc->saved_exc_port = port; | |
2930 | ||
c5aa993b | 2931 | if (!proc->exc_port) |
0963b4bd MS |
2932 | /* If PROC is a thread, we may not have set its exception port |
2933 | before. We can't use proc_steal_exc_port because it also sets | |
2934 | saved_exc_port. */ | |
c906108c | 2935 | { |
c5aa993b JM |
2936 | proc->exc_port = proc->inf->event_port; |
2937 | err = proc_set_exception_port (proc, proc->exc_port); | |
8a3fe4f8 | 2938 | error (_("Can't set exception port for %s: %s"), |
dc672865 | 2939 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
2940 | } |
2941 | } | |
942fd805 | 2942 | |
c906108c | 2943 | static void |
5fed81ff | 2944 | set_task_exc_port_cmd (const char *args, int from_tty) |
c906108c SS |
2945 | { |
2946 | struct inf *inf = cur_inf (); | |
d8734c88 | 2947 | |
c906108c | 2948 | if (!args) |
8a3fe4f8 | 2949 | error (_("No argument to \"set task exception-port\" command.")); |
14a8ad62 | 2950 | gnu_target->steal_exc_port (inf->task, parse_and_eval_address (args)); |
c906108c SS |
2951 | } |
2952 | ||
c5aa993b | 2953 | static void |
5fed81ff | 2954 | set_stopped_cmd (const char *args, int from_tty) |
c906108c SS |
2955 | { |
2956 | cur_inf ()->stopped = _parse_bool_arg (args, "yes", "no", "set stopped"); | |
2957 | } | |
2958 | ||
2959 | static void | |
5fed81ff | 2960 | show_stopped_cmd (const char *args, int from_tty) |
c906108c SS |
2961 | { |
2962 | struct inf *inf = active_inf (); | |
d8734c88 | 2963 | |
c906108c SS |
2964 | check_empty (args, "show stopped"); |
2965 | printf_unfiltered ("The inferior process %s stopped.\n", | |
2966 | inf->stopped ? "is" : "isn't"); | |
2967 | } | |
2968 | ||
c5aa993b | 2969 | static void |
5fed81ff | 2970 | set_sig_thread_cmd (const char *args, int from_tty) |
c906108c | 2971 | { |
c906108c SS |
2972 | struct inf *inf = cur_inf (); |
2973 | ||
c5aa993b | 2974 | if (!args || (!isdigit (*args) && strcmp (args, "none") != 0)) |
8a3fe4f8 | 2975 | error (_("Illegal argument to \"set signal-thread\" command.\n" |
c3187fa5 | 2976 | "Should be a thread ID, or \"none\".")); |
c906108c SS |
2977 | |
2978 | if (strcmp (args, "none") == 0) | |
2979 | inf->signal_thread = 0; | |
2980 | else | |
2981 | { | |
c3187fa5 | 2982 | struct thread_info *tp = parse_thread_id (args, NULL); |
e38504b3 | 2983 | inf->signal_thread = inf_tid_to_thread (inf, tp->ptid.lwp ()); |
c906108c SS |
2984 | } |
2985 | } | |
2986 | ||
2987 | static void | |
5fed81ff | 2988 | show_sig_thread_cmd (const char *args, int from_tty) |
c906108c SS |
2989 | { |
2990 | struct inf *inf = active_inf (); | |
d8734c88 | 2991 | |
c906108c SS |
2992 | check_empty (args, "show signal-thread"); |
2993 | if (inf->signal_thread) | |
2994 | printf_unfiltered ("The signal thread is %s.\n", | |
2995 | proc_string (inf->signal_thread)); | |
2996 | else | |
2997 | printf_unfiltered ("There is no signal thread.\n"); | |
2998 | } | |
942fd805 | 2999 | |
c906108c | 3000 | \f |
c5aa993b | 3001 | static void |
785102a7 | 3002 | set_signals_cmd (int arg, int from_tty) |
c906108c | 3003 | { |
c906108c SS |
3004 | struct inf *inf = cur_inf (); |
3005 | ||
785102a7 | 3006 | inf->want_signals = arg; |
c906108c SS |
3007 | |
3008 | if (inf->task && inf->want_signals != inf->traced) | |
3009 | /* Make this take effect immediately in a running process. */ | |
14a8ad62 | 3010 | gnu_target->inf_set_traced (inf, inf->want_signals); |
c906108c SS |
3011 | } |
3012 | ||
785102a7 | 3013 | static void |
5fed81ff | 3014 | set_signals_cmd (const char *args, int from_tty) |
785102a7 TS |
3015 | { |
3016 | set_signals_cmd(parse_bool_arg (args, "set signals"), from_tty); | |
3017 | } | |
3018 | ||
c906108c | 3019 | static void |
5fed81ff | 3020 | show_signals_cmd (const char *args, int from_tty) |
c906108c SS |
3021 | { |
3022 | struct inf *inf = cur_inf (); | |
d8734c88 | 3023 | |
c906108c SS |
3024 | check_empty (args, "show signals"); |
3025 | printf_unfiltered ("The inferior process's signals %s intercepted.\n", | |
3026 | inf->task | |
3027 | ? (inf->traced ? "are" : "aren't") | |
3028 | : (inf->want_signals ? "will be" : "won't be")); | |
3029 | } | |
3030 | ||
c5aa993b | 3031 | static void |
785102a7 | 3032 | set_exceptions_cmd (int arg, int from_tty) |
c906108c SS |
3033 | { |
3034 | struct inf *inf = cur_inf (); | |
c906108c | 3035 | |
c26e9cbb YQ |
3036 | /* Make this take effect immediately in a running process. */ |
3037 | /* XXX */ ; | |
c906108c | 3038 | |
785102a7 TS |
3039 | inf->want_exceptions = arg; |
3040 | } | |
3041 | ||
3042 | static void | |
5fed81ff | 3043 | set_exceptions_cmd (const char *args, int from_tty) |
785102a7 TS |
3044 | { |
3045 | set_exceptions_cmd (parse_bool_arg (args, "set exceptions"), from_tty); | |
c906108c SS |
3046 | } |
3047 | ||
3048 | static void | |
5fed81ff | 3049 | show_exceptions_cmd (const char *args, int from_tty) |
c906108c SS |
3050 | { |
3051 | struct inf *inf = cur_inf (); | |
d8734c88 | 3052 | |
c906108c SS |
3053 | check_empty (args, "show exceptions"); |
3054 | printf_unfiltered ("Exceptions in the inferior %s trapped.\n", | |
3055 | inf->task | |
3056 | ? (inf->want_exceptions ? "are" : "aren't") | |
3057 | : (inf->want_exceptions ? "will be" : "won't be")); | |
3058 | } | |
942fd805 | 3059 | |
c906108c SS |
3060 | \f |
3061 | static void | |
981a3fb3 | 3062 | set_task_cmd (const char *args, int from_tty) |
c906108c | 3063 | { |
942fd805 MK |
3064 | printf_unfiltered ("\"set task\" must be followed by the name" |
3065 | " of a task property.\n"); | |
c906108c SS |
3066 | } |
3067 | ||
3068 | static void | |
981a3fb3 | 3069 | show_task_cmd (const char *args, int from_tty) |
c906108c SS |
3070 | { |
3071 | struct inf *inf = cur_inf (); | |
3072 | ||
3073 | check_empty (args, "show task"); | |
3074 | ||
3075 | show_signals_cmd (0, from_tty); | |
3076 | show_exceptions_cmd (0, from_tty); | |
3077 | show_task_pause_cmd (0, from_tty); | |
3078 | ||
3079 | if (inf->pause_sc == 0) | |
3080 | show_thread_default_pause_cmd (0, from_tty); | |
3081 | show_thread_default_run_cmd (0, from_tty); | |
3082 | ||
3083 | if (inf->task) | |
3084 | { | |
3085 | show_stopped_cmd (0, from_tty); | |
3086 | show_sig_thread_cmd (0, from_tty); | |
3087 | } | |
3088 | ||
3089 | if (inf->detach_sc != 0) | |
3090 | show_task_detach_sc_cmd (0, from_tty); | |
3091 | if (inf->default_thread_detach_sc != 0) | |
3092 | show_thread_default_detach_sc_cmd (0, from_tty); | |
3093 | } | |
942fd805 | 3094 | |
c906108c SS |
3095 | \f |
3096 | static void | |
5fed81ff | 3097 | set_noninvasive_cmd (const char *args, int from_tty) |
c906108c SS |
3098 | { |
3099 | /* Invert the sense of the arg for each component. */ | |
785102a7 | 3100 | int inv_arg = parse_bool_arg (args, "set noninvasive") ? 0 : 1; |
c906108c | 3101 | |
785102a7 TS |
3102 | set_task_pause_cmd (inv_arg, from_tty); |
3103 | set_signals_cmd (inv_arg, from_tty); | |
3104 | set_exceptions_cmd (inv_arg, from_tty); | |
c906108c | 3105 | } |
942fd805 | 3106 | |
c906108c SS |
3107 | \f |
3108 | static void | |
0cc6f43d | 3109 | info_port_rights (const char *args, mach_port_type_t only) |
c906108c SS |
3110 | { |
3111 | struct inf *inf = active_inf (); | |
3d6d86c6 | 3112 | struct value *vmark = value_mark (); |
c906108c SS |
3113 | |
3114 | if (args) | |
3115 | /* Explicit list of port rights. */ | |
3116 | { | |
3117 | while (*args) | |
3118 | { | |
3d6d86c6 | 3119 | struct value *val = parse_to_comma_and_eval (&args); |
c906108c SS |
3120 | long right = value_as_long (val); |
3121 | error_t err = | |
d8734c88 MS |
3122 | print_port_info (right, 0, inf->task->port, PORTINFO_DETAILS, |
3123 | stdout); | |
3124 | ||
c906108c | 3125 | if (err) |
8a3fe4f8 | 3126 | error (_("%ld: %s."), right, safe_strerror (err)); |
c906108c SS |
3127 | } |
3128 | } | |
3129 | else | |
3130 | /* Print all of them. */ | |
3131 | { | |
3132 | error_t err = | |
d8734c88 MS |
3133 | print_task_ports_info (inf->task->port, only, PORTINFO_DETAILS, |
3134 | stdout); | |
c906108c | 3135 | if (err) |
8a3fe4f8 | 3136 | error (_("%s."), safe_strerror (err)); |
c906108c SS |
3137 | } |
3138 | ||
3139 | value_free_to_mark (vmark); | |
3140 | } | |
3141 | ||
3142 | static void | |
1d12d88f | 3143 | info_send_rights_cmd (const char *args, int from_tty) |
c906108c SS |
3144 | { |
3145 | info_port_rights (args, MACH_PORT_TYPE_SEND); | |
3146 | } | |
942fd805 | 3147 | |
c906108c | 3148 | static void |
1d12d88f | 3149 | info_recv_rights_cmd (const char *args, int from_tty) |
c906108c SS |
3150 | { |
3151 | info_port_rights (args, MACH_PORT_TYPE_RECEIVE); | |
3152 | } | |
942fd805 | 3153 | |
c906108c | 3154 | static void |
1d12d88f | 3155 | info_port_sets_cmd (const char *args, int from_tty) |
c906108c SS |
3156 | { |
3157 | info_port_rights (args, MACH_PORT_TYPE_PORT_SET); | |
3158 | } | |
942fd805 | 3159 | |
c906108c | 3160 | static void |
1d12d88f | 3161 | info_dead_names_cmd (const char *args, int from_tty) |
c906108c SS |
3162 | { |
3163 | info_port_rights (args, MACH_PORT_TYPE_DEAD_NAME); | |
3164 | } | |
942fd805 | 3165 | |
c906108c | 3166 | static void |
1d12d88f | 3167 | info_port_rights_cmd (const char *args, int from_tty) |
c906108c SS |
3168 | { |
3169 | info_port_rights (args, ~0); | |
3170 | } | |
942fd805 | 3171 | |
c906108c | 3172 | \f |
c5aa993b | 3173 | static void |
942fd805 | 3174 | add_task_commands (void) |
c906108c | 3175 | { |
1a966eab AC |
3176 | add_cmd ("pause", class_run, set_thread_default_pause_cmd, _("\ |
3177 | Set whether the new threads are suspended while gdb has control.\n\ | |
942fd805 MK |
3178 | This property normally has no effect because the whole task is\n\ |
3179 | suspended, however, that may be disabled with \"set task pause off\".\n\ | |
1a966eab | 3180 | The default value is \"off\"."), |
c906108c | 3181 | &set_thread_default_cmd_list); |
1a966eab AC |
3182 | add_cmd ("pause", no_class, show_thread_default_pause_cmd, _("\ |
3183 | Show whether new threads are suspended while gdb has control."), | |
c906108c | 3184 | &show_thread_default_cmd_list); |
942fd805 | 3185 | |
1a966eab AC |
3186 | add_cmd ("run", class_run, set_thread_default_run_cmd, _("\ |
3187 | Set whether new threads are allowed to run (once gdb has noticed them)."), | |
c906108c | 3188 | &set_thread_default_cmd_list); |
1a966eab AC |
3189 | add_cmd ("run", no_class, show_thread_default_run_cmd, _("\ |
3190 | Show whether new threads are allowed to run (once gdb has noticed them)."), | |
c906108c | 3191 | &show_thread_default_cmd_list); |
942fd805 | 3192 | |
c906108c | 3193 | add_cmd ("detach-suspend-count", class_run, set_thread_default_detach_sc_cmd, |
1a966eab | 3194 | _("Set the default detach-suspend-count value for new threads."), |
c906108c SS |
3195 | &set_thread_default_cmd_list); |
3196 | add_cmd ("detach-suspend-count", no_class, show_thread_default_detach_sc_cmd, | |
1a966eab | 3197 | _("Show the default detach-suspend-count value for new threads."), |
c906108c SS |
3198 | &show_thread_default_cmd_list); |
3199 | ||
5e84b7ee SM |
3200 | cmd_list_element *set_signals_cmd |
3201 | = add_cmd ("signals", class_run, set_signals_cmd, _("\ | |
1a966eab AC |
3202 | Set whether the inferior process's signals will be intercepted.\n\ |
3203 | Mach exceptions (such as breakpoint traps) are not affected."), | |
5e84b7ee SM |
3204 | &setlist); |
3205 | add_alias_cmd ("sigs", set_signals_cmd, class_run, 1, &setlist); | |
3206 | ||
3207 | cmd_list_element *show_signals_cmd | |
3208 | = add_cmd ("signals", no_class, show_signals_cmd, _("\ | |
1a966eab | 3209 | Show whether the inferior process's signals will be intercepted."), |
5e84b7ee SM |
3210 | &showlist); |
3211 | add_alias_cmd ("sigs", show_signals_cmd, no_class, 1, &showlist); | |
c906108c | 3212 | |
5e84b7ee SM |
3213 | cmd_list_element *set_signal_thread_cmd |
3214 | = add_cmd ("signal-thread", class_run, set_sig_thread_cmd, _("\ | |
1a966eab AC |
3215 | Set the thread that gdb thinks is the libc signal thread.\n\ |
3216 | This thread is run when delivering a signal to a non-stopped process."), | |
5e84b7ee SM |
3217 | &setlist); |
3218 | add_alias_cmd ("sigthread", set_signal_thread_cmd, class_run, 1, &setlist); | |
3219 | ||
3220 | cmd_list_element *show_signal_thread_cmd | |
3221 | = add_cmd ("signal-thread", no_class, show_sig_thread_cmd, _("\ | |
1a966eab | 3222 | Set the thread that gdb thinks is the libc signal thread."), |
5e84b7ee SM |
3223 | &showlist); |
3224 | add_alias_cmd ("sigthread", show_signal_thread_cmd, no_class, 1, &showlist); | |
c906108c | 3225 | |
1a966eab AC |
3226 | add_cmd ("stopped", class_run, set_stopped_cmd, _("\ |
3227 | Set whether gdb thinks the inferior process is stopped as with SIGSTOP.\n\ | |
3228 | Stopped process will be continued by sending them a signal."), | |
c906108c | 3229 | &setlist); |
fe79276f | 3230 | add_cmd ("stopped", no_class, show_stopped_cmd, _("\ |
1a966eab | 3231 | Show whether gdb thinks the inferior process is stopped as with SIGSTOP."), |
c906108c SS |
3232 | &showlist); |
3233 | ||
5e84b7ee SM |
3234 | cmd_list_element *set_exceptions_cmd |
3235 | = add_cmd ("exceptions", class_run, set_exceptions_cmd, _("\ | |
1a966eab | 3236 | Set whether exceptions in the inferior process will be trapped.\n\ |
942fd805 | 3237 | When exceptions are turned off, neither breakpoints nor single-stepping\n\ |
5e84b7ee | 3238 | will work."), &setlist); |
c906108c | 3239 | /* Allow `set exc' despite conflict with `set exception-port'. */ |
5e84b7ee SM |
3240 | add_alias_cmd ("exc", set_exceptions_cmd, class_run, 1, &setlist); |
3241 | ||
1a966eab AC |
3242 | add_cmd ("exceptions", no_class, show_exceptions_cmd, _("\ |
3243 | Show whether exceptions in the inferior process will be trapped."), | |
c906108c SS |
3244 | &showlist); |
3245 | ||
3246 | add_prefix_cmd ("task", no_class, set_task_cmd, | |
1bedd215 | 3247 | _("Command prefix for setting task attributes."), |
2f822da5 | 3248 | &set_task_cmd_list, 0, &setlist); |
c906108c | 3249 | add_prefix_cmd ("task", no_class, show_task_cmd, |
1bedd215 | 3250 | _("Command prefix for showing task attributes."), |
2f822da5 | 3251 | &show_task_cmd_list, 0, &showlist); |
c906108c | 3252 | |
1a966eab AC |
3253 | add_cmd ("pause", class_run, set_task_pause_cmd, _("\ |
3254 | Set whether the task is suspended while gdb has control.\n\ | |
942fd805 MK |
3255 | A value of \"on\" takes effect immediately, otherwise nothing happens\n\ |
3256 | until the next time the program is continued.\n\ | |
3257 | When setting this to \"off\", \"set thread default pause on\" can be\n\ | |
1a966eab | 3258 | used to pause individual threads by default instead."), |
c906108c SS |
3259 | &set_task_cmd_list); |
3260 | add_cmd ("pause", no_class, show_task_pause_cmd, | |
1a966eab | 3261 | _("Show whether the task is suspended while gdb has control."), |
c906108c | 3262 | &show_task_cmd_list); |
942fd805 | 3263 | |
c906108c | 3264 | add_cmd ("detach-suspend-count", class_run, set_task_detach_sc_cmd, |
1a966eab | 3265 | _("Set the suspend count will leave on the thread when detaching."), |
c906108c SS |
3266 | &set_task_cmd_list); |
3267 | add_cmd ("detach-suspend-count", no_class, show_task_detach_sc_cmd, | |
0963b4bd MS |
3268 | _("Show the suspend count will leave " |
3269 | "on the thread when detaching."), | |
c906108c SS |
3270 | &show_task_cmd_list); |
3271 | ||
5e84b7ee SM |
3272 | cmd_list_element *set_task_exception_port_cmd |
3273 | = add_cmd ("exception-port", no_class, set_task_exc_port_cmd, _("\ | |
1a966eab AC |
3274 | Set the task exception port to which we forward exceptions.\n\ |
3275 | The argument should be the value of the send right in the task."), | |
5e84b7ee SM |
3276 | &set_task_cmd_list); |
3277 | add_alias_cmd ("excp", set_task_exception_port_cmd, no_class, 1, | |
3278 | &set_task_cmd_list); | |
3279 | add_alias_cmd ("exc-port", set_task_exception_port_cmd, no_class, 1, | |
942fd805 | 3280 | &set_task_cmd_list); |
c906108c SS |
3281 | |
3282 | /* A convenient way of turning on all options require to noninvasively | |
3283 | debug running tasks. */ | |
1a966eab AC |
3284 | add_cmd ("noninvasive", no_class, set_noninvasive_cmd, _("\ |
3285 | Set task options so that we interfere as little as possible.\n\ | |
942fd805 | 3286 | This is the same as setting `task pause', `exceptions', and\n\ |
1a966eab | 3287 | `signals' to the opposite value."), |
c906108c SS |
3288 | &setlist); |
3289 | ||
3290 | /* Commands to show information about the task's ports. */ | |
5f515954 | 3291 | add_info ("send-rights", info_send_rights_cmd, |
590042fc | 3292 | _("Show information about the task's send rights.")); |
5f515954 | 3293 | add_info ("receive-rights", info_recv_rights_cmd, |
590042fc | 3294 | _("Show information about the task's receive rights.")); |
5f515954 | 3295 | add_info ("port-rights", info_port_rights_cmd, |
590042fc | 3296 | _("Show information about the task's port rights.")); |
5f515954 | 3297 | add_info ("port-sets", info_port_sets_cmd, |
590042fc | 3298 | _("Show information about the task's port sets.")); |
5f515954 | 3299 | add_info ("dead-names", info_dead_names_cmd, |
590042fc | 3300 | _("Show information about the task's dead names.")); |
c906108c SS |
3301 | add_info_alias ("ports", "port-rights", 1); |
3302 | add_info_alias ("port", "port-rights", 1); | |
3303 | add_info_alias ("psets", "port-sets", 1); | |
3304 | } | |
c906108c | 3305 | |
942fd805 | 3306 | \f |
c906108c | 3307 | static void |
5fed81ff | 3308 | set_thread_pause_cmd (const char *args, int from_tty) |
c906108c SS |
3309 | { |
3310 | struct proc *thread = cur_thread (); | |
3311 | int old_sc = thread->pause_sc; | |
d8734c88 | 3312 | |
c906108c SS |
3313 | thread->pause_sc = parse_bool_arg (args, "set thread pause"); |
3314 | if (old_sc == 0 && thread->pause_sc != 0 && thread->inf->pause_sc == 0) | |
3315 | /* If the task is currently unsuspended, immediately suspend it, | |
3316 | otherwise wait until the next time it gets control. */ | |
14a8ad62 | 3317 | gnu_target->inf_suspend (thread->inf); |
c906108c SS |
3318 | } |
3319 | ||
3320 | static void | |
5fed81ff | 3321 | show_thread_pause_cmd (const char *args, int from_tty) |
c906108c SS |
3322 | { |
3323 | struct proc *thread = cur_thread (); | |
3324 | int sc = thread->pause_sc; | |
d8734c88 | 3325 | |
c906108c SS |
3326 | check_empty (args, "show task pause"); |
3327 | printf_unfiltered ("Thread %s %s suspended while gdb has control%s.\n", | |
3328 | proc_string (thread), | |
3329 | sc ? "is" : "isn't", | |
942fd805 | 3330 | !sc && thread->inf->pause_sc ? " (but the task is)" : ""); |
c906108c SS |
3331 | } |
3332 | ||
3333 | static void | |
5fed81ff | 3334 | set_thread_run_cmd (const char *args, int from_tty) |
c906108c SS |
3335 | { |
3336 | struct proc *thread = cur_thread (); | |
d8734c88 | 3337 | |
c906108c SS |
3338 | thread->run_sc = parse_bool_arg (args, "set thread run") ? 0 : 1; |
3339 | } | |
3340 | ||
3341 | static void | |
5fed81ff | 3342 | show_thread_run_cmd (const char *args, int from_tty) |
c906108c SS |
3343 | { |
3344 | struct proc *thread = cur_thread (); | |
d8734c88 | 3345 | |
c906108c SS |
3346 | check_empty (args, "show thread run"); |
3347 | printf_unfiltered ("Thread %s %s allowed to run.", | |
3348 | proc_string (thread), | |
3349 | thread->run_sc == 0 ? "is" : "isn't"); | |
3350 | } | |
3351 | ||
3352 | static void | |
5fed81ff | 3353 | set_thread_detach_sc_cmd (const char *args, int from_tty) |
c906108c | 3354 | { |
942fd805 MK |
3355 | cur_thread ()->detach_sc = parse_int_arg (args, |
3356 | "set thread detach-suspend-count"); | |
c906108c SS |
3357 | } |
3358 | ||
3359 | static void | |
5fed81ff | 3360 | show_thread_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
3361 | { |
3362 | struct proc *thread = cur_thread (); | |
d8734c88 | 3363 | |
c906108c | 3364 | check_empty (args, "show thread detach-suspend-count"); |
942fd805 MK |
3365 | printf_unfiltered ("Thread %s will be left with a suspend count" |
3366 | " of %d when detaching.\n", | |
c906108c SS |
3367 | proc_string (thread), |
3368 | thread->detach_sc); | |
3369 | } | |
3370 | ||
3371 | static void | |
5fed81ff | 3372 | set_thread_exc_port_cmd (const char *args, int from_tty) |
c906108c SS |
3373 | { |
3374 | struct proc *thread = cur_thread (); | |
d8734c88 | 3375 | |
c906108c | 3376 | if (!args) |
8a3fe4f8 | 3377 | error (_("No argument to \"set thread exception-port\" command.")); |
14a8ad62 | 3378 | gnu_target->steal_exc_port (thread, parse_and_eval_address (args)); |
c906108c SS |
3379 | } |
3380 | ||
3381 | #if 0 | |
3382 | static void | |
3383 | show_thread_cmd (char *args, int from_tty) | |
3384 | { | |
3385 | struct proc *thread = cur_thread (); | |
d8734c88 | 3386 | |
c906108c SS |
3387 | check_empty (args, "show thread"); |
3388 | show_thread_run_cmd (0, from_tty); | |
3389 | show_thread_pause_cmd (0, from_tty); | |
3390 | if (thread->detach_sc != 0) | |
3391 | show_thread_detach_sc_cmd (0, from_tty); | |
3392 | } | |
3393 | #endif | |
3394 | ||
3395 | static void | |
5fed81ff | 3396 | thread_takeover_sc_cmd (const char *args, int from_tty) |
c906108c SS |
3397 | { |
3398 | struct proc *thread = cur_thread (); | |
d8734c88 | 3399 | |
c906108c SS |
3400 | thread_basic_info_data_t _info; |
3401 | thread_basic_info_t info = &_info; | |
3402 | mach_msg_type_number_t info_len = THREAD_BASIC_INFO_COUNT; | |
cabb5f06 TS |
3403 | kern_return_t err |
3404 | = mach_thread_info (thread->port, THREAD_BASIC_INFO, | |
3405 | (int *) &info, &info_len); | |
c906108c | 3406 | if (err) |
8a3fe4f8 | 3407 | error (("%s."), safe_strerror (err)); |
c906108c SS |
3408 | thread->sc = info->suspend_count; |
3409 | if (from_tty) | |
3410 | printf_unfiltered ("Suspend count was %d.\n", thread->sc); | |
3411 | if (info != &_info) | |
942fd805 MK |
3412 | vm_deallocate (mach_task_self (), (vm_address_t) info, |
3413 | info_len * sizeof (int)); | |
c906108c SS |
3414 | } |
3415 | ||
942fd805 MK |
3416 | \f |
3417 | static void | |
3418 | add_thread_commands (void) | |
c906108c SS |
3419 | { |
3420 | add_prefix_cmd ("thread", no_class, set_thread_cmd, | |
1bedd215 | 3421 | _("Command prefix for setting thread properties."), |
2f822da5 | 3422 | &set_thread_cmd_list, 0, &setlist); |
c906108c | 3423 | add_prefix_cmd ("default", no_class, show_thread_cmd, |
1bedd215 | 3424 | _("Command prefix for setting default thread properties."), |
2f822da5 | 3425 | &set_thread_default_cmd_list, 0, |
c906108c SS |
3426 | &set_thread_cmd_list); |
3427 | add_prefix_cmd ("thread", no_class, set_thread_default_cmd, | |
1bedd215 | 3428 | _("Command prefix for showing thread properties."), |
2f822da5 | 3429 | &show_thread_cmd_list, 0, &showlist); |
c906108c | 3430 | add_prefix_cmd ("default", no_class, show_thread_default_cmd, |
1bedd215 | 3431 | _("Command prefix for showing default thread properties."), |
2f822da5 | 3432 | &show_thread_default_cmd_list, 0, |
c906108c SS |
3433 | &show_thread_cmd_list); |
3434 | ||
1a966eab AC |
3435 | add_cmd ("pause", class_run, set_thread_pause_cmd, _("\ |
3436 | Set whether the current thread is suspended while gdb has control.\n\ | |
942fd805 MK |
3437 | A value of \"on\" takes effect immediately, otherwise nothing happens\n\ |
3438 | until the next time the program is continued. This property normally\n\ | |
3439 | has no effect because the whole task is suspended, however, that may\n\ | |
3440 | be disabled with \"set task pause off\".\n\ | |
1a966eab | 3441 | The default value is \"off\"."), |
c906108c | 3442 | &set_thread_cmd_list); |
1a966eab AC |
3443 | add_cmd ("pause", no_class, show_thread_pause_cmd, _("\ |
3444 | Show whether the current thread is suspended while gdb has control."), | |
c906108c SS |
3445 | &show_thread_cmd_list); |
3446 | ||
3447 | add_cmd ("run", class_run, set_thread_run_cmd, | |
1a966eab | 3448 | _("Set whether the current thread is allowed to run."), |
c906108c SS |
3449 | &set_thread_cmd_list); |
3450 | add_cmd ("run", no_class, show_thread_run_cmd, | |
1a966eab | 3451 | _("Show whether the current thread is allowed to run."), |
c906108c SS |
3452 | &show_thread_cmd_list); |
3453 | ||
1a966eab AC |
3454 | add_cmd ("detach-suspend-count", class_run, set_thread_detach_sc_cmd, _("\ |
3455 | Set the suspend count will leave on the thread when detaching.\n\ | |
942fd805 | 3456 | Note that this is relative to suspend count when gdb noticed the thread;\n\ |
1a966eab | 3457 | use the `thread takeover-suspend-count' to force it to an absolute value."), |
c906108c | 3458 | &set_thread_cmd_list); |
1a966eab AC |
3459 | add_cmd ("detach-suspend-count", no_class, show_thread_detach_sc_cmd, _("\ |
3460 | Show the suspend count will leave on the thread when detaching.\n\ | |
942fd805 | 3461 | Note that this is relative to suspend count when gdb noticed the thread;\n\ |
1a966eab | 3462 | use the `thread takeover-suspend-count' to force it to an absolute value."), |
c906108c SS |
3463 | &show_thread_cmd_list); |
3464 | ||
1a966eab AC |
3465 | add_cmd ("exception-port", no_class, set_thread_exc_port_cmd, _("\ |
3466 | Set the thread exception port to which we forward exceptions.\n\ | |
942fd805 | 3467 | This overrides the task exception port.\n\ |
1a966eab | 3468 | The argument should be the value of the send right in the task."), |
c906108c | 3469 | &set_thread_cmd_list); |
5e84b7ee SM |
3470 | add_alias_cmd ("excp", set_thread_exception_port_cmd, no_class, 1, |
3471 | &set_thread_cmd_list); | |
3472 | add_alias_cmd ("exc-port", set_thread_exception_port_cmd, no_class, 1, | |
942fd805 | 3473 | &set_thread_cmd_list); |
c906108c | 3474 | |
1a966eab AC |
3475 | add_cmd ("takeover-suspend-count", no_class, thread_takeover_sc_cmd, _("\ |
3476 | Force the threads absolute suspend-count to be gdb's.\n\ | |
942fd805 | 3477 | Prior to giving this command, gdb's thread suspend-counts are relative\n\ |
1a966eab | 3478 | to the thread's initial suspend-count when gdb notices the threads."), |
c906108c SS |
3479 | &thread_cmd_list); |
3480 | } | |
942fd805 | 3481 | |
6c265988 | 3482 | void _initialize_gnu_nat (); |
c906108c | 3483 | void |
6c265988 | 3484 | _initialize_gnu_nat () |
c906108c SS |
3485 | { |
3486 | proc_server = getproc (); | |
942fd805 | 3487 | |
c906108c SS |
3488 | add_task_commands (); |
3489 | add_thread_commands (); | |
cbe54154 PA |
3490 | add_setshow_boolean_cmd ("gnu-nat", class_maintenance, |
3491 | &gnu_debug_flag, | |
3492 | _("Set debugging output for the gnu backend."), | |
3493 | _("Show debugging output for the gnu backend."), | |
3494 | NULL, | |
3495 | NULL, | |
3496 | NULL, | |
3497 | &setdebuglist, | |
3498 | &showdebuglist); | |
c906108c SS |
3499 | } |
3500 | \f | |
3501 | #ifdef FLUSH_INFERIOR_CACHE | |
3502 | ||
3503 | /* When over-writing code on some machines the I-Cache must be flushed | |
3504 | explicitly, because it is not kept coherent by the lazy hardware. | |
3505 | This definitely includes breakpoints, for instance, or else we | |
0963b4bd | 3506 | end up looping in mysterious Bpt traps. */ |
c906108c SS |
3507 | |
3508 | void | |
fba45db2 | 3509 | flush_inferior_icache (CORE_ADDR pc, int amount) |
c906108c SS |
3510 | { |
3511 | vm_machine_attribute_val_t flush = MATTR_VAL_ICACHE_FLUSH; | |
0947023d | 3512 | kern_return_t ret; |
c5aa993b | 3513 | |
c289427b | 3514 | ret = vm_machine_attribute (gnu_current_inf->task->port, |
c906108c SS |
3515 | pc, |
3516 | amount, | |
3517 | MATTR_CACHE, | |
3518 | &flush); | |
3519 | if (ret != KERN_SUCCESS) | |
8a3fe4f8 | 3520 | warning (_("Error flushing inferior's cache : %s"), safe_strerror (ret)); |
c906108c | 3521 | } |
c5aa993b | 3522 | #endif /* FLUSH_INFERIOR_CACHE */ |