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da59e081 | 1 | /* Interface GDB to the GNU Hurd. |
b811d2c2 | 2 | Copyright (C) 1992-2020 Free Software Foundation, Inc. |
c906108c SS |
3 | |
4 | This file is part of GDB. | |
5 | ||
6 | Written by Miles Bader <miles@gnu.ai.mit.edu> | |
7 | ||
8 | Some code and ideas from m3-nat.c by Jukka Virtanen <jtv@hut.fi> | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
c906108c SS |
13 | (at your option) any later version. |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
47d48711 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 22 | |
cabb5f06 TS |
23 | /* Include this first, to pick up the <mach.h> 'thread_info' diversion. */ |
24 | #include "gnu-nat.h" | |
25 | ||
21389b7f TS |
26 | /* Mach/Hurd headers are not yet ready for C++ compilation. */ |
27 | extern "C" | |
28 | { | |
c906108c | 29 | #include <mach.h> |
c906108c SS |
30 | #include <mach_error.h> |
31 | #include <mach/exception.h> | |
942fd805 MK |
32 | #include <mach/message.h> |
33 | #include <mach/notify.h> | |
c906108c SS |
34 | #include <mach/vm_attributes.h> |
35 | ||
942fd805 MK |
36 | #include <hurd.h> |
37 | #include <hurd/interrupt.h> | |
c906108c SS |
38 | #include <hurd/msg.h> |
39 | #include <hurd/msg_request.h> | |
942fd805 | 40 | #include <hurd/process.h> |
96ffcb62 AS |
41 | /* Defined in <hurd/process.h>, but we need forward declarations from |
42 | <hurd/process_request.h> as well. */ | |
43 | #undef _process_user_ | |
942fd805 | 44 | #include <hurd/process_request.h> |
c906108c | 45 | #include <hurd/signal.h> |
c906108c SS |
46 | #include <hurd/sigpreempt.h> |
47 | ||
48 | #include <portinfo.h> | |
21389b7f TS |
49 | } |
50 | ||
51 | #include "defs.h" | |
52 | ||
53 | #include <ctype.h> | |
54 | #include <limits.h> | |
55 | #include <setjmp.h> | |
56 | #include <signal.h> | |
57 | #include <sys/ptrace.h> | |
9c4ac400 ST |
58 | #include <elf.h> |
59 | #include <link.h> | |
c906108c | 60 | |
c906108c SS |
61 | #include "inferior.h" |
62 | #include "symtab.h" | |
63 | #include "value.h" | |
64 | #include "language.h" | |
65 | #include "target.h" | |
268a13a5 | 66 | #include "gdbsupport/gdb_wait.h" |
366f550a | 67 | #include "gdbarch.h" |
c906108c SS |
68 | #include "gdbcmd.h" |
69 | #include "gdbcore.h" | |
942fd805 | 70 | #include "gdbthread.h" |
3b3e6bee | 71 | #include "gdb_obstack.h" |
c3187fa5 | 72 | #include "tid-parse.h" |
6c6ef69f | 73 | #include "nat/fork-inferior.h" |
c906108c | 74 | |
b4d1e8c7 | 75 | #include "inf-child.h" |
c906108c | 76 | |
21389b7f TS |
77 | /* MIG stubs are not yet ready for C++ compilation. */ |
78 | extern "C" | |
79 | { | |
c906108c SS |
80 | #include "exc_request_S.h" |
81 | #include "notify_S.h" | |
82 | #include "process_reply_S.h" | |
83 | #include "msg_reply_S.h" | |
84 | #include "exc_request_U.h" | |
85 | #include "msg_U.h" | |
21389b7f | 86 | } |
c906108c | 87 | |
53dff92c ST |
88 | struct gnu_nat_target *gnu_target; |
89 | ||
c906108c SS |
90 | static process_t proc_server = MACH_PORT_NULL; |
91 | ||
92 | /* If we've sent a proc_wait_request to the proc server, the pid of the | |
93 | process we asked about. We can only ever have one outstanding. */ | |
94 | int proc_wait_pid = 0; | |
95 | ||
96 | /* The number of wait requests we've sent, and expect replies from. */ | |
97 | int proc_waits_pending = 0; | |
98 | ||
491144b5 | 99 | bool gnu_debug_flag = false; |
c906108c SS |
100 | |
101 | /* Forward decls */ | |
102 | ||
f04a82ef | 103 | static struct inf *make_inf (); |
c906108c SS |
104 | |
105 | #define inf_debug(_inf, msg, args...) \ | |
106 | do { struct inf *__inf = (_inf); \ | |
a74ce742 PM |
107 | debug ("{inf %d %s}: " msg, __inf->pid, \ |
108 | host_address_to_string (__inf) , ##args); } while (0) | |
c906108c | 109 | |
c906108c SS |
110 | /* Evaluate RPC_EXPR in a scope with the variables MSGPORT and REFPORT bound |
111 | to INF's msg port and task port respectively. If it has no msg port, | |
112 | EIEIO is returned. INF must refer to a running process! */ | |
113 | #define INF_MSGPORT_RPC(inf, rpc_expr) \ | |
114 | HURD_MSGPORT_RPC (proc_getmsgport (proc_server, inf->pid, &msgport), \ | |
115 | (refport = inf->task->port, 0), 0, \ | |
116 | msgport ? (rpc_expr) : EIEIO) | |
117 | ||
118 | /* Like INF_MSGPORT_RPC, but will also resume the signal thread to ensure | |
119 | there's someone around to deal with the RPC (and resuspend things | |
120 | afterwards). This effects INF's threads' resume_sc count. */ | |
121 | #define INF_RESUME_MSGPORT_RPC(inf, rpc_expr) \ | |
122 | (inf_set_threads_resume_sc_for_signal_thread (inf) \ | |
0947023d | 123 | ? ({ kern_return_t __e; \ |
c906108c SS |
124 | inf_resume (inf); \ |
125 | __e = INF_MSGPORT_RPC (inf, rpc_expr); \ | |
126 | inf_suspend (inf); \ | |
127 | __e; }) \ | |
128 | : EIEIO) | |
129 | ||
c906108c SS |
130 | \f |
131 | /* The state passed by an exception message. */ | |
132 | struct exc_state | |
c5aa993b | 133 | { |
0963b4bd | 134 | int exception; /* The exception code. */ |
c5aa993b | 135 | int code, subcode; |
0963b4bd MS |
136 | mach_port_t handler; /* The real exception port to handle this. */ |
137 | mach_port_t reply; /* The reply port from the exception call. */ | |
c5aa993b | 138 | }; |
c906108c | 139 | |
0963b4bd | 140 | /* The results of the last wait an inf did. */ |
c906108c | 141 | struct inf_wait |
c5aa993b JM |
142 | { |
143 | struct target_waitstatus status; /* The status returned to gdb. */ | |
0963b4bd | 144 | struct exc_state exc; /* The exception that caused us to return. */ |
c5aa993b JM |
145 | struct proc *thread; /* The thread in question. */ |
146 | int suppress; /* Something trivial happened. */ | |
147 | }; | |
c906108c SS |
148 | |
149 | /* The state of an inferior. */ | |
150 | struct inf | |
c5aa993b JM |
151 | { |
152 | /* Fields describing the current inferior. */ | |
c906108c | 153 | |
c5aa993b JM |
154 | struct proc *task; /* The mach task. */ |
155 | struct proc *threads; /* A linked list of all threads in TASK. */ | |
c906108c | 156 | |
0963b4bd MS |
157 | /* True if THREADS needn't be validated by querying the task. We |
158 | assume that we and the task in question are the only ones | |
159 | frobbing the thread list, so as long as we don't let any code | |
160 | run, we don't have to worry about THREADS changing. */ | |
c5aa993b | 161 | int threads_up_to_date; |
c906108c | 162 | |
0963b4bd | 163 | pid_t pid; /* The real system PID. */ |
c906108c | 164 | |
c5aa993b | 165 | struct inf_wait wait; /* What to return from target_wait. */ |
c906108c | 166 | |
0963b4bd MS |
167 | /* One thread proc in INF may be in `single-stepping mode'. This |
168 | is it. */ | |
c5aa993b | 169 | struct proc *step_thread; |
c906108c | 170 | |
c5aa993b JM |
171 | /* The thread we think is the signal thread. */ |
172 | struct proc *signal_thread; | |
c906108c | 173 | |
c5aa993b | 174 | mach_port_t event_port; /* Where we receive various msgs. */ |
c906108c | 175 | |
c5aa993b JM |
176 | /* True if we think at least one thread in the inferior could currently be |
177 | running. */ | |
178 | unsigned int running:1; | |
c906108c | 179 | |
c5aa993b JM |
180 | /* True if the process has stopped (in the proc server sense). Note that |
181 | since a proc server `stop' leaves the signal thread running, the inf can | |
182 | be RUNNING && STOPPED... */ | |
183 | unsigned int stopped:1; | |
cce74817 | 184 | |
c5aa993b JM |
185 | /* True if the inferior has no message port. */ |
186 | unsigned int nomsg:1; | |
c906108c | 187 | |
c5aa993b JM |
188 | /* True if the inferior is traced. */ |
189 | unsigned int traced:1; | |
c906108c | 190 | |
c5aa993b JM |
191 | /* True if we shouldn't try waiting for the inferior, usually because we |
192 | can't for some reason. */ | |
193 | unsigned int no_wait:1; | |
c906108c | 194 | |
c5aa993b | 195 | /* When starting a new inferior, we don't try to validate threads until all |
c82f56d9 | 196 | the proper execs have been done, which this flag states we still |
c5aa993b | 197 | expect to happen. */ |
c82f56d9 | 198 | unsigned int pending_execs:1; |
c906108c | 199 | |
0963b4bd | 200 | /* Fields describing global state. */ |
c906108c | 201 | |
c5aa993b JM |
202 | /* The task suspend count used when gdb has control. This is normally 1 to |
203 | make things easier for us, but sometimes (like when attaching to vital | |
204 | system servers) it may be desirable to let the task continue to run | |
205 | (pausing individual threads as necessary). */ | |
206 | int pause_sc; | |
c906108c | 207 | |
c5aa993b JM |
208 | /* The task suspend count left when detaching from a task. */ |
209 | int detach_sc; | |
c906108c | 210 | |
c5aa993b JM |
211 | /* The initial values used for the run_sc and pause_sc of newly discovered |
212 | threads -- see the definition of those fields in struct proc. */ | |
213 | int default_thread_run_sc; | |
214 | int default_thread_pause_sc; | |
215 | int default_thread_detach_sc; | |
c906108c | 216 | |
c5aa993b JM |
217 | /* True if the process should be traced when started/attached. Newly |
218 | started processes *must* be traced at first to exec them properly, but | |
219 | if this is false, tracing is turned off as soon it has done so. */ | |
220 | int want_signals; | |
c906108c | 221 | |
c5aa993b JM |
222 | /* True if exceptions from the inferior process should be trapped. This |
223 | must be on to use breakpoints. */ | |
224 | int want_exceptions; | |
225 | }; | |
c906108c SS |
226 | |
227 | ||
c5aa993b JM |
228 | int |
229 | __proc_pid (struct proc *proc) | |
c906108c SS |
230 | { |
231 | return proc->inf->pid; | |
232 | } | |
942fd805 | 233 | |
c906108c SS |
234 | \f |
235 | /* Update PROC's real suspend count to match it's desired one. Returns true | |
236 | if we think PROC is now in a runnable state. */ | |
237 | int | |
14a8ad62 | 238 | gnu_nat_target::proc_update_sc (struct proc *proc) |
c906108c SS |
239 | { |
240 | int running; | |
c5aa993b | 241 | int err = 0; |
c906108c SS |
242 | int delta = proc->sc - proc->cur_sc; |
243 | ||
244 | if (delta) | |
245 | proc_debug (proc, "sc: %d --> %d", proc->cur_sc, proc->sc); | |
246 | ||
247 | if (proc->sc == 0 && proc->state_changed) | |
0963b4bd | 248 | /* Since PROC may start running, we must write back any state changes. */ |
c906108c | 249 | { |
bf62e5b4 | 250 | gdb_assert (proc_is_thread (proc)); |
c906108c SS |
251 | proc_debug (proc, "storing back changed thread state"); |
252 | err = thread_set_state (proc->port, THREAD_STATE_FLAVOR, | |
f75c77fc | 253 | (thread_state_t) &proc->state, THREAD_STATE_SIZE); |
c5aa993b | 254 | if (!err) |
c906108c SS |
255 | proc->state_changed = 0; |
256 | } | |
257 | ||
258 | if (delta > 0) | |
942fd805 MK |
259 | { |
260 | while (delta-- > 0 && !err) | |
261 | { | |
262 | if (proc_is_task (proc)) | |
263 | err = task_suspend (proc->port); | |
264 | else | |
265 | err = thread_suspend (proc->port); | |
266 | } | |
267 | } | |
c906108c | 268 | else |
942fd805 MK |
269 | { |
270 | while (delta++ < 0 && !err) | |
271 | { | |
272 | if (proc_is_task (proc)) | |
273 | err = task_resume (proc->port); | |
274 | else | |
275 | err = thread_resume (proc->port); | |
276 | } | |
277 | } | |
c5aa993b | 278 | if (!err) |
c906108c SS |
279 | proc->cur_sc = proc->sc; |
280 | ||
281 | /* If we got an error, then the task/thread has disappeared. */ | |
282 | running = !err && proc->sc == 0; | |
283 | ||
284 | proc_debug (proc, "is %s", err ? "dead" : running ? "running" : "suspended"); | |
285 | if (err) | |
dc672865 | 286 | proc_debug (proc, "err = %s", safe_strerror (err)); |
c906108c SS |
287 | |
288 | if (running) | |
289 | { | |
290 | proc->aborted = 0; | |
291 | proc->state_valid = proc->state_changed = 0; | |
292 | proc->fetched_regs = 0; | |
293 | } | |
294 | ||
295 | return running; | |
296 | } | |
942fd805 | 297 | |
c906108c SS |
298 | \f |
299 | /* Thread_abort is called on PROC if needed. PROC must be a thread proc. | |
300 | If PROC is deemed `precious', then nothing is done unless FORCE is true. | |
301 | In particular, a thread is precious if it's running (in which case forcing | |
302 | it includes suspending it first), or if it has an exception pending. */ | |
303 | void | |
14a8ad62 | 304 | gnu_nat_target::proc_abort (struct proc *proc, int force) |
c906108c | 305 | { |
bf62e5b4 | 306 | gdb_assert (proc_is_thread (proc)); |
c906108c | 307 | |
c5aa993b | 308 | if (!proc->aborted) |
c906108c SS |
309 | { |
310 | struct inf *inf = proc->inf; | |
311 | int running = (proc->cur_sc == 0 && inf->task->cur_sc == 0); | |
312 | ||
313 | if (running && force) | |
314 | { | |
315 | proc->sc = 1; | |
316 | inf_update_suspends (proc->inf); | |
317 | running = 0; | |
8a3fe4f8 | 318 | warning (_("Stopped %s."), proc_string (proc)); |
c906108c SS |
319 | } |
320 | else if (proc == inf->wait.thread && inf->wait.exc.reply && !force) | |
321 | /* An exception is pending on PROC, which don't mess with. */ | |
322 | running = 1; | |
323 | ||
c5aa993b | 324 | if (!running) |
c906108c SS |
325 | /* We only abort the thread if it's not actually running. */ |
326 | { | |
327 | thread_abort (proc->port); | |
328 | proc_debug (proc, "aborted"); | |
329 | proc->aborted = 1; | |
330 | } | |
331 | else | |
332 | proc_debug (proc, "not aborting"); | |
333 | } | |
334 | } | |
335 | ||
336 | /* Make sure that the state field in PROC is up to date, and return a pointer | |
337 | to it, or 0 if something is wrong. If WILL_MODIFY is true, makes sure | |
338 | that the thread is stopped and aborted first, and sets the state_changed | |
339 | field in PROC to true. */ | |
340 | thread_state_t | |
14a8ad62 | 341 | gnu_nat_target::proc_get_state (struct proc *proc, int will_modify) |
c906108c SS |
342 | { |
343 | int was_aborted = proc->aborted; | |
344 | ||
345 | proc_debug (proc, "updating state info%s", | |
346 | will_modify ? " (with intention to modify)" : ""); | |
347 | ||
348 | proc_abort (proc, will_modify); | |
349 | ||
c5aa993b | 350 | if (!was_aborted && proc->aborted) |
c906108c SS |
351 | /* PROC's state may have changed since we last fetched it. */ |
352 | proc->state_valid = 0; | |
353 | ||
c5aa993b | 354 | if (!proc->state_valid) |
c906108c SS |
355 | { |
356 | mach_msg_type_number_t state_size = THREAD_STATE_SIZE; | |
0947023d | 357 | kern_return_t err = |
d8734c88 MS |
358 | thread_get_state (proc->port, THREAD_STATE_FLAVOR, |
359 | (thread_state_t) &proc->state, &state_size); | |
360 | ||
c906108c SS |
361 | proc_debug (proc, "getting thread state"); |
362 | proc->state_valid = !err; | |
363 | } | |
364 | ||
365 | if (proc->state_valid) | |
366 | { | |
367 | if (will_modify) | |
368 | proc->state_changed = 1; | |
f75c77fc | 369 | return (thread_state_t) &proc->state; |
c906108c SS |
370 | } |
371 | else | |
372 | return 0; | |
373 | } | |
942fd805 | 374 | |
c906108c SS |
375 | \f |
376 | /* Set PORT to PROC's exception port. */ | |
0947023d | 377 | kern_return_t |
14a8ad62 | 378 | gnu_nat_target::proc_get_exception_port (struct proc * proc, mach_port_t * port) |
c906108c SS |
379 | { |
380 | if (proc_is_task (proc)) | |
381 | return task_get_exception_port (proc->port, port); | |
382 | else | |
383 | return thread_get_exception_port (proc->port, port); | |
384 | } | |
385 | ||
386 | /* Set PROC's exception port to PORT. */ | |
0947023d | 387 | kern_return_t |
14a8ad62 | 388 | gnu_nat_target::proc_set_exception_port (struct proc * proc, mach_port_t port) |
c906108c | 389 | { |
a9a758e3 | 390 | proc_debug (proc, "setting exception port: %lu", port); |
c906108c SS |
391 | if (proc_is_task (proc)) |
392 | return task_set_exception_port (proc->port, port); | |
393 | else | |
394 | return thread_set_exception_port (proc->port, port); | |
395 | } | |
396 | ||
397 | /* Get PROC's exception port, cleaning up a bit if proc has died. */ | |
14a8ad62 ST |
398 | mach_port_t |
399 | gnu_nat_target::_proc_get_exc_port (struct proc *proc) | |
c906108c SS |
400 | { |
401 | mach_port_t exc_port; | |
0947023d | 402 | kern_return_t err = proc_get_exception_port (proc, &exc_port); |
c906108c SS |
403 | |
404 | if (err) | |
405 | /* PROC must be dead. */ | |
406 | { | |
407 | if (proc->exc_port) | |
408 | mach_port_deallocate (mach_task_self (), proc->exc_port); | |
409 | proc->exc_port = MACH_PORT_NULL; | |
410 | if (proc->saved_exc_port) | |
411 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
412 | proc->saved_exc_port = MACH_PORT_NULL; | |
413 | } | |
414 | ||
415 | return exc_port; | |
416 | } | |
417 | ||
0963b4bd MS |
418 | /* Replace PROC's exception port with EXC_PORT, unless it's already |
419 | been done. Stash away any existing exception port so we can | |
420 | restore it later. */ | |
c906108c | 421 | void |
14a8ad62 | 422 | gnu_nat_target::proc_steal_exc_port (struct proc *proc, mach_port_t exc_port) |
c906108c SS |
423 | { |
424 | mach_port_t cur_exc_port = _proc_get_exc_port (proc); | |
425 | ||
426 | if (cur_exc_port) | |
427 | { | |
0947023d | 428 | kern_return_t err = 0; |
c906108c | 429 | |
a9a758e3 | 430 | proc_debug (proc, "inserting exception port: %lu", exc_port); |
c906108c SS |
431 | |
432 | if (cur_exc_port != exc_port) | |
433 | /* Put in our exception port. */ | |
434 | err = proc_set_exception_port (proc, exc_port); | |
435 | ||
436 | if (err || cur_exc_port == proc->exc_port) | |
437 | /* We previously set the exception port, and it's still set. So we | |
438 | just keep the old saved port which is what the proc set. */ | |
439 | { | |
440 | if (cur_exc_port) | |
441 | mach_port_deallocate (mach_task_self (), cur_exc_port); | |
442 | } | |
443 | else | |
0963b4bd | 444 | /* Keep a copy of PROC's old exception port so it can be restored. */ |
c906108c SS |
445 | { |
446 | if (proc->saved_exc_port) | |
447 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
448 | proc->saved_exc_port = cur_exc_port; | |
449 | } | |
450 | ||
a9a758e3 | 451 | proc_debug (proc, "saved exception port: %lu", proc->saved_exc_port); |
c906108c SS |
452 | |
453 | if (!err) | |
454 | proc->exc_port = exc_port; | |
455 | else | |
8a3fe4f8 | 456 | warning (_("Error setting exception port for %s: %s"), |
dc672865 | 457 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
458 | } |
459 | } | |
460 | ||
461 | /* If we previously replaced PROC's exception port, put back what we | |
462 | found there at the time, unless *our* exception port has since been | |
463 | overwritten, in which case who knows what's going on. */ | |
464 | void | |
14a8ad62 | 465 | gnu_nat_target::proc_restore_exc_port (struct proc *proc) |
c906108c SS |
466 | { |
467 | mach_port_t cur_exc_port = _proc_get_exc_port (proc); | |
468 | ||
469 | if (cur_exc_port) | |
470 | { | |
0947023d | 471 | kern_return_t err = 0; |
c906108c SS |
472 | |
473 | proc_debug (proc, "restoring real exception port"); | |
474 | ||
475 | if (proc->exc_port == cur_exc_port) | |
476 | /* Our's is still there. */ | |
477 | err = proc_set_exception_port (proc, proc->saved_exc_port); | |
478 | ||
479 | if (proc->saved_exc_port) | |
480 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
481 | proc->saved_exc_port = MACH_PORT_NULL; | |
482 | ||
483 | if (!err) | |
484 | proc->exc_port = MACH_PORT_NULL; | |
485 | else | |
8a3fe4f8 | 486 | warning (_("Error setting exception port for %s: %s"), |
dc672865 | 487 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
488 | } |
489 | } | |
942fd805 | 490 | |
c906108c SS |
491 | \f |
492 | /* Turns hardware tracing in PROC on or off when SET is true or false, | |
493 | respectively. Returns true on success. */ | |
494 | int | |
14a8ad62 | 495 | gnu_nat_target::proc_trace (struct proc *proc, int set) |
c906108c SS |
496 | { |
497 | thread_state_t state = proc_get_state (proc, 1); | |
498 | ||
c5aa993b | 499 | if (!state) |
0963b4bd | 500 | return 0; /* The thread must be dead. */ |
c906108c SS |
501 | |
502 | proc_debug (proc, "tracing %s", set ? "on" : "off"); | |
c5aa993b | 503 | |
c906108c SS |
504 | if (set) |
505 | { | |
506 | /* XXX We don't get the exception unless the thread has its own | |
0963b4bd | 507 | exception port???? */ |
c906108c SS |
508 | if (proc->exc_port == MACH_PORT_NULL) |
509 | proc_steal_exc_port (proc, proc->inf->event_port); | |
510 | THREAD_STATE_SET_TRACED (state); | |
511 | } | |
512 | else | |
513 | THREAD_STATE_CLEAR_TRACED (state); | |
514 | ||
515 | return 1; | |
516 | } | |
942fd805 | 517 | |
c906108c SS |
518 | \f |
519 | /* A variable from which to assign new TIDs. */ | |
520 | static int next_thread_id = 1; | |
521 | ||
522 | /* Returns a new proc structure with the given fields. Also adds a | |
523 | notification for PORT becoming dead to be sent to INF's notify port. */ | |
524 | struct proc * | |
14a8ad62 | 525 | gnu_nat_target::make_proc (struct inf *inf, mach_port_t port, int tid) |
c906108c | 526 | { |
0947023d | 527 | kern_return_t err; |
c906108c | 528 | mach_port_t prev_port = MACH_PORT_NULL; |
8d749320 | 529 | struct proc *proc = XNEW (struct proc); |
c906108c SS |
530 | |
531 | proc->port = port; | |
532 | proc->tid = tid; | |
533 | proc->inf = inf; | |
534 | proc->next = 0; | |
535 | proc->saved_exc_port = MACH_PORT_NULL; | |
536 | proc->exc_port = MACH_PORT_NULL; | |
537 | ||
538 | proc->sc = 0; | |
539 | proc->cur_sc = 0; | |
540 | ||
541 | /* Note that these are all the values for threads; the task simply uses the | |
542 | corresponding field in INF directly. */ | |
543 | proc->run_sc = inf->default_thread_run_sc; | |
544 | proc->pause_sc = inf->default_thread_pause_sc; | |
545 | proc->detach_sc = inf->default_thread_detach_sc; | |
546 | proc->resume_sc = proc->run_sc; | |
547 | ||
548 | proc->aborted = 0; | |
549 | proc->dead = 0; | |
550 | proc->state_valid = 0; | |
551 | proc->state_changed = 0; | |
552 | ||
553 | proc_debug (proc, "is new"); | |
554 | ||
555 | /* Get notified when things die. */ | |
556 | err = | |
c5aa993b | 557 | mach_port_request_notification (mach_task_self (), port, |
c906108c SS |
558 | MACH_NOTIFY_DEAD_NAME, 1, |
559 | inf->event_port, | |
560 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
561 | &prev_port); | |
562 | if (err) | |
a9a758e3 | 563 | warning (_("Couldn't request notification for port %lu: %s"), |
dc672865 | 564 | port, safe_strerror (err)); |
c906108c SS |
565 | else |
566 | { | |
a9a758e3 | 567 | proc_debug (proc, "notifications to: %lu", inf->event_port); |
c906108c SS |
568 | if (prev_port != MACH_PORT_NULL) |
569 | mach_port_deallocate (mach_task_self (), prev_port); | |
570 | } | |
571 | ||
572 | if (inf->want_exceptions) | |
942fd805 MK |
573 | { |
574 | if (proc_is_task (proc)) | |
575 | /* Make the task exception port point to us. */ | |
576 | proc_steal_exc_port (proc, inf->event_port); | |
577 | else | |
578 | /* Just clear thread exception ports -- they default to the | |
579 | task one. */ | |
580 | proc_steal_exc_port (proc, MACH_PORT_NULL); | |
581 | } | |
c906108c SS |
582 | |
583 | return proc; | |
584 | } | |
585 | ||
586 | /* Frees PROC and any resources it uses, and returns the value of PROC's | |
587 | next field. */ | |
588 | struct proc * | |
14a8ad62 | 589 | gnu_nat_target::_proc_free (struct proc *proc) |
c906108c SS |
590 | { |
591 | struct inf *inf = proc->inf; | |
592 | struct proc *next = proc->next; | |
593 | ||
594 | proc_debug (proc, "freeing..."); | |
595 | ||
596 | if (proc == inf->step_thread) | |
597 | /* Turn off single stepping. */ | |
598 | inf_set_step_thread (inf, 0); | |
599 | if (proc == inf->wait.thread) | |
600 | inf_clear_wait (inf); | |
601 | if (proc == inf->signal_thread) | |
602 | inf->signal_thread = 0; | |
603 | ||
604 | if (proc->port != MACH_PORT_NULL) | |
605 | { | |
606 | if (proc->exc_port != MACH_PORT_NULL) | |
607 | /* Restore the original exception port. */ | |
608 | proc_restore_exc_port (proc); | |
609 | if (proc->cur_sc != 0) | |
610 | /* Resume the thread/task. */ | |
611 | { | |
612 | proc->sc = 0; | |
613 | proc_update_sc (proc); | |
614 | } | |
615 | mach_port_deallocate (mach_task_self (), proc->port); | |
616 | } | |
617 | ||
b8c9b27d | 618 | xfree (proc); |
c906108c SS |
619 | return next; |
620 | } | |
942fd805 | 621 | |
c906108c | 622 | \f |
f04a82ef | 623 | static struct inf * |
fba45db2 | 624 | make_inf (void) |
c906108c | 625 | { |
8d749320 | 626 | struct inf *inf = XNEW (struct inf); |
c906108c SS |
627 | |
628 | inf->task = 0; | |
629 | inf->threads = 0; | |
630 | inf->threads_up_to_date = 0; | |
631 | inf->pid = 0; | |
632 | inf->wait.status.kind = TARGET_WAITKIND_SPURIOUS; | |
633 | inf->wait.thread = 0; | |
634 | inf->wait.exc.handler = MACH_PORT_NULL; | |
635 | inf->wait.exc.reply = MACH_PORT_NULL; | |
636 | inf->step_thread = 0; | |
637 | inf->signal_thread = 0; | |
638 | inf->event_port = MACH_PORT_NULL; | |
c906108c | 639 | inf->running = 0; |
cce74817 JM |
640 | inf->stopped = 0; |
641 | inf->nomsg = 1; | |
c906108c SS |
642 | inf->traced = 0; |
643 | inf->no_wait = 0; | |
644 | inf->pending_execs = 0; | |
645 | inf->pause_sc = 1; | |
646 | inf->detach_sc = 0; | |
647 | inf->default_thread_run_sc = 0; | |
648 | inf->default_thread_pause_sc = 0; | |
649 | inf->default_thread_detach_sc = 0; | |
650 | inf->want_signals = 1; /* By default */ | |
651 | inf->want_exceptions = 1; /* By default */ | |
652 | ||
653 | return inf; | |
654 | } | |
655 | ||
942fd805 | 656 | /* Clear INF's target wait status. */ |
c906108c | 657 | void |
14a8ad62 | 658 | gnu_nat_target::inf_clear_wait (struct inf *inf) |
c906108c SS |
659 | { |
660 | inf_debug (inf, "clearing wait"); | |
661 | inf->wait.status.kind = TARGET_WAITKIND_SPURIOUS; | |
662 | inf->wait.thread = 0; | |
663 | inf->wait.suppress = 0; | |
664 | if (inf->wait.exc.handler != MACH_PORT_NULL) | |
665 | { | |
666 | mach_port_deallocate (mach_task_self (), inf->wait.exc.handler); | |
667 | inf->wait.exc.handler = MACH_PORT_NULL; | |
668 | } | |
669 | if (inf->wait.exc.reply != MACH_PORT_NULL) | |
670 | { | |
671 | mach_port_deallocate (mach_task_self (), inf->wait.exc.reply); | |
672 | inf->wait.exc.reply = MACH_PORT_NULL; | |
673 | } | |
674 | } | |
942fd805 | 675 | |
c906108c SS |
676 | \f |
677 | void | |
14a8ad62 | 678 | gnu_nat_target::inf_cleanup (struct inf *inf) |
c906108c SS |
679 | { |
680 | inf_debug (inf, "cleanup"); | |
681 | ||
682 | inf_clear_wait (inf); | |
683 | ||
684 | inf_set_pid (inf, -1); | |
685 | inf->pid = 0; | |
cce74817 JM |
686 | inf->running = 0; |
687 | inf->stopped = 0; | |
688 | inf->nomsg = 1; | |
c906108c SS |
689 | inf->traced = 0; |
690 | inf->no_wait = 0; | |
c906108c SS |
691 | inf->pending_execs = 0; |
692 | ||
693 | if (inf->event_port) | |
694 | { | |
695 | mach_port_destroy (mach_task_self (), inf->event_port); | |
696 | inf->event_port = MACH_PORT_NULL; | |
697 | } | |
698 | } | |
699 | ||
700 | void | |
14a8ad62 | 701 | gnu_nat_target::inf_startup (struct inf *inf, int pid) |
c906108c | 702 | { |
0947023d | 703 | kern_return_t err; |
c906108c SS |
704 | |
705 | inf_debug (inf, "startup: pid = %d", pid); | |
706 | ||
707 | inf_cleanup (inf); | |
708 | ||
709 | /* Make the port on which we receive all events. */ | |
710 | err = mach_port_allocate (mach_task_self (), | |
711 | MACH_PORT_RIGHT_RECEIVE, &inf->event_port); | |
712 | if (err) | |
8a3fe4f8 | 713 | error (_("Error allocating event port: %s"), safe_strerror (err)); |
c906108c SS |
714 | |
715 | /* Make a send right for it, so we can easily copy it for other people. */ | |
716 | mach_port_insert_right (mach_task_self (), inf->event_port, | |
717 | inf->event_port, MACH_MSG_TYPE_MAKE_SEND); | |
718 | inf_set_pid (inf, pid); | |
719 | } | |
942fd805 | 720 | |
c906108c | 721 | \f |
942fd805 | 722 | /* Close current process, if any, and attach INF to process PORT. */ |
c5aa993b | 723 | void |
14a8ad62 | 724 | gnu_nat_target::inf_set_pid (struct inf *inf, pid_t pid) |
c906108c SS |
725 | { |
726 | task_t task_port; | |
727 | struct proc *task = inf->task; | |
728 | ||
729 | inf_debug (inf, "setting pid: %d", pid); | |
730 | ||
731 | if (pid < 0) | |
732 | task_port = MACH_PORT_NULL; | |
733 | else | |
734 | { | |
0947023d | 735 | kern_return_t err = proc_pid2task (proc_server, pid, &task_port); |
d8734c88 | 736 | |
c906108c | 737 | if (err) |
0963b4bd MS |
738 | error (_("Error getting task for pid %d: %s"), |
739 | pid, safe_strerror (err)); | |
c906108c SS |
740 | } |
741 | ||
a9a758e3 | 742 | inf_debug (inf, "setting task: %lu", task_port); |
c906108c SS |
743 | |
744 | if (inf->pause_sc) | |
745 | task_suspend (task_port); | |
746 | ||
747 | if (task && task->port != task_port) | |
748 | { | |
749 | inf->task = 0; | |
0963b4bd MS |
750 | inf_validate_procs (inf); /* Trash all the threads. */ |
751 | _proc_free (task); /* And the task. */ | |
c906108c SS |
752 | } |
753 | ||
754 | if (task_port != MACH_PORT_NULL) | |
755 | { | |
756 | inf->task = make_proc (inf, task_port, PROC_TID_TASK); | |
757 | inf->threads_up_to_date = 0; | |
758 | } | |
759 | ||
760 | if (inf->task) | |
761 | { | |
762 | inf->pid = pid; | |
763 | if (inf->pause_sc) | |
942fd805 MK |
764 | /* Reflect task_suspend above. */ |
765 | inf->task->sc = inf->task->cur_sc = 1; | |
c906108c SS |
766 | } |
767 | else | |
768 | inf->pid = -1; | |
769 | } | |
942fd805 | 770 | |
c906108c | 771 | \f |
cce74817 JM |
772 | /* Validates INF's stopped, nomsg and traced field from the actual |
773 | proc server state. Note that the traced field is only updated from | |
774 | the proc server state if we do not have a message port. If we do | |
775 | have a message port we'd better look at the tracemask itself. */ | |
14a8ad62 ST |
776 | void |
777 | gnu_nat_target::inf_validate_procinfo (struct inf *inf) | |
c906108c SS |
778 | { |
779 | char *noise; | |
780 | mach_msg_type_number_t noise_len = 0; | |
781 | struct procinfo *pi; | |
782 | mach_msg_type_number_t pi_len = 0; | |
783 | int info_flags = 0; | |
0947023d | 784 | kern_return_t err = |
d8734c88 MS |
785 | proc_getprocinfo (proc_server, inf->pid, &info_flags, |
786 | (procinfo_t *) &pi, &pi_len, &noise, &noise_len); | |
c906108c | 787 | |
c5aa993b | 788 | if (!err) |
c906108c SS |
789 | { |
790 | inf->stopped = !!(pi->state & PI_STOPPED); | |
cce74817 JM |
791 | inf->nomsg = !!(pi->state & PI_NOMSG); |
792 | if (inf->nomsg) | |
793 | inf->traced = !!(pi->state & PI_TRACED); | |
a441dfbc ST |
794 | vm_deallocate (mach_task_self (), (vm_address_t) pi, |
795 | pi_len * sizeof (*(procinfo_t) 0)); | |
c906108c | 796 | if (noise_len > 0) |
c5aa993b | 797 | vm_deallocate (mach_task_self (), (vm_address_t) noise, noise_len); |
c906108c SS |
798 | } |
799 | } | |
800 | ||
f90b2b1d JK |
801 | /* Validates INF's task suspend count. If it's higher than we expect, |
802 | verify with the user before `stealing' the extra count. */ | |
14a8ad62 ST |
803 | void |
804 | gnu_nat_target::inf_validate_task_sc (struct inf *inf) | |
c906108c | 805 | { |
f90b2b1d JK |
806 | char *noise; |
807 | mach_msg_type_number_t noise_len = 0; | |
808 | struct procinfo *pi; | |
809 | mach_msg_type_number_t pi_len = 0; | |
810 | int info_flags = PI_FETCH_TASKINFO; | |
811 | int suspend_count = -1; | |
0947023d | 812 | kern_return_t err; |
c906108c | 813 | |
f90b2b1d JK |
814 | retry: |
815 | err = proc_getprocinfo (proc_server, inf->pid, &info_flags, | |
942fd805 | 816 | (procinfo_t *) &pi, &pi_len, &noise, &noise_len); |
c906108c | 817 | if (err) |
f90b2b1d JK |
818 | { |
819 | inf->task->dead = 1; /* oh well */ | |
820 | return; | |
821 | } | |
822 | ||
823 | if (inf->task->cur_sc < pi->taskinfo.suspend_count && suspend_count == -1) | |
824 | { | |
825 | /* The proc server might have suspended the task while stopping | |
826 | it. This happens when the task is handling a traced signal. | |
827 | Refetch the suspend count. The proc server should be | |
828 | finished stopping the task by now. */ | |
829 | suspend_count = pi->taskinfo.suspend_count; | |
830 | goto retry; | |
831 | } | |
832 | ||
833 | suspend_count = pi->taskinfo.suspend_count; | |
834 | ||
a441dfbc ST |
835 | vm_deallocate (mach_task_self (), (vm_address_t) pi, |
836 | pi_len * sizeof (*(procinfo_t) 0)); | |
f90b2b1d | 837 | if (noise_len > 0) |
a441dfbc | 838 | vm_deallocate (mach_task_self (), (vm_address_t) noise, noise_len); |
f90b2b1d JK |
839 | |
840 | if (inf->task->cur_sc < suspend_count) | |
c906108c | 841 | { |
651ce16a PA |
842 | if (!query (_("Pid %d has an additional task suspend count of %d;" |
843 | " clear it? "), inf->pid, | |
844 | suspend_count - inf->task->cur_sc)) | |
8a3fe4f8 | 845 | error (_("Additional task suspend count left untouched.")); |
c906108c | 846 | |
f90b2b1d | 847 | inf->task->cur_sc = suspend_count; |
c906108c SS |
848 | } |
849 | } | |
850 | ||
942fd805 MK |
851 | /* Turns tracing for INF on or off, depending on ON, unless it already |
852 | is. If INF is running, the resume_sc count of INF's threads will | |
853 | be modified, and the signal thread will briefly be run to change | |
854 | the trace state. */ | |
14a8ad62 ST |
855 | void |
856 | gnu_nat_target::inf_set_traced (struct inf *inf, int on) | |
c906108c | 857 | { |
942fd805 MK |
858 | if (on == inf->traced) |
859 | return; | |
860 | ||
861 | if (inf->task && !inf->task->dead) | |
862 | /* Make it take effect immediately. */ | |
863 | { | |
864 | sigset_t mask = on ? ~(sigset_t) 0 : 0; | |
0947023d | 865 | kern_return_t err = |
c5aa993b | 866 | INF_RESUME_MSGPORT_RPC (inf, msg_set_init_int (msgport, refport, |
942fd805 | 867 | INIT_TRACEMASK, mask)); |
d8734c88 | 868 | |
942fd805 MK |
869 | if (err == EIEIO) |
870 | { | |
871 | if (on) | |
8a3fe4f8 | 872 | warning (_("Can't modify tracing state for pid %d: %s"), |
942fd805 | 873 | inf->pid, "No signal thread"); |
c906108c | 874 | inf->traced = on; |
942fd805 MK |
875 | } |
876 | else if (err) | |
8a3fe4f8 | 877 | warning (_("Can't modify tracing state for pid %d: %s"), |
dc672865 | 878 | inf->pid, safe_strerror (err)); |
942fd805 MK |
879 | else |
880 | inf->traced = on; | |
881 | } | |
882 | else | |
883 | inf->traced = on; | |
c906108c | 884 | } |
942fd805 | 885 | |
c906108c | 886 | \f |
942fd805 MK |
887 | /* Makes all the real suspend count deltas of all the procs in INF |
888 | match the desired values. Careful to always do thread/task suspend | |
889 | counts in the safe order. Returns true if at least one thread is | |
0963b4bd | 890 | thought to be running. */ |
c906108c | 891 | int |
14a8ad62 | 892 | gnu_nat_target::inf_update_suspends (struct inf *inf) |
c906108c SS |
893 | { |
894 | struct proc *task = inf->task; | |
d8734c88 | 895 | |
c906108c SS |
896 | /* We don't have to update INF->threads even though we're iterating over it |
897 | because we'll change a thread only if it already has an existing proc | |
898 | entry. */ | |
c906108c SS |
899 | inf_debug (inf, "updating suspend counts"); |
900 | ||
901 | if (task) | |
902 | { | |
903 | struct proc *thread; | |
904 | int task_running = (task->sc == 0), thread_running = 0; | |
905 | ||
906 | if (task->sc > task->cur_sc) | |
907 | /* The task is becoming _more_ suspended; do before any threads. */ | |
908 | task_running = proc_update_sc (task); | |
909 | ||
910 | if (inf->pending_execs) | |
911 | /* When we're waiting for an exec, things may be happening behind our | |
912 | back, so be conservative. */ | |
913 | thread_running = 1; | |
914 | ||
915 | /* Do all the thread suspend counts. */ | |
916 | for (thread = inf->threads; thread; thread = thread->next) | |
917 | thread_running |= proc_update_sc (thread); | |
918 | ||
919 | if (task->sc != task->cur_sc) | |
920 | /* We didn't do the task first, because we wanted to wait for the | |
921 | threads; do it now. */ | |
922 | task_running = proc_update_sc (task); | |
923 | ||
924 | inf_debug (inf, "%srunning...", | |
925 | (thread_running && task_running) ? "" : "not "); | |
926 | ||
927 | inf->running = thread_running && task_running; | |
928 | ||
929 | /* Once any thread has executed some code, we can't depend on the | |
c5aa993b | 930 | threads list any more. */ |
c906108c SS |
931 | if (inf->running) |
932 | inf->threads_up_to_date = 0; | |
933 | ||
934 | return inf->running; | |
935 | } | |
936 | ||
937 | return 0; | |
938 | } | |
942fd805 | 939 | |
c906108c SS |
940 | \f |
941 | /* Converts a GDB pid to a struct proc. */ | |
942 | struct proc * | |
943 | inf_tid_to_thread (struct inf *inf, int tid) | |
944 | { | |
945 | struct proc *thread = inf->threads; | |
946 | ||
947 | while (thread) | |
948 | if (thread->tid == tid) | |
949 | return thread; | |
950 | else | |
951 | thread = thread->next; | |
952 | return 0; | |
953 | } | |
954 | ||
955 | /* Converts a thread port to a struct proc. */ | |
f04a82ef | 956 | static struct proc * |
c906108c SS |
957 | inf_port_to_thread (struct inf *inf, mach_port_t port) |
958 | { | |
959 | struct proc *thread = inf->threads; | |
d8734c88 | 960 | |
c906108c SS |
961 | while (thread) |
962 | if (thread->port == port) | |
963 | return thread; | |
964 | else | |
965 | thread = thread->next; | |
966 | return 0; | |
967 | } | |
942fd805 | 968 | |
05db5edd ST |
969 | /* See gnu-nat.h. */ |
970 | ||
971 | void | |
972 | inf_threads (struct inf *inf, inf_threads_ftype *f, void *arg) | |
973 | { | |
974 | struct proc *thread; | |
975 | ||
976 | for (thread = inf->threads; thread; thread = thread->next) | |
977 | f (thread, arg); | |
978 | } | |
979 | ||
c906108c SS |
980 | \f |
981 | /* Make INF's list of threads be consistent with reality of TASK. */ | |
982 | void | |
14a8ad62 | 983 | gnu_nat_target::inf_validate_procs (struct inf *inf) |
c906108c | 984 | { |
c906108c | 985 | thread_array_t threads; |
942fd805 | 986 | mach_msg_type_number_t num_threads, i; |
c906108c SS |
987 | struct proc *task = inf->task; |
988 | ||
989 | /* If no threads are currently running, this function will guarantee that | |
990 | things are up to date. The exception is if there are zero threads -- | |
991 | then it is almost certainly in an odd state, and probably some outside | |
992 | agent will create threads. */ | |
993 | inf->threads_up_to_date = inf->threads ? !inf->running : 0; | |
994 | ||
995 | if (task) | |
996 | { | |
0947023d | 997 | kern_return_t err = task_threads (task->port, &threads, &num_threads); |
d8734c88 | 998 | |
c906108c SS |
999 | inf_debug (inf, "fetching threads"); |
1000 | if (err) | |
1001 | /* TASK must be dead. */ | |
1002 | { | |
1003 | task->dead = 1; | |
1004 | task = 0; | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | if (!task) | |
1009 | { | |
1010 | num_threads = 0; | |
1011 | inf_debug (inf, "no task"); | |
1012 | } | |
1013 | ||
1014 | { | |
942fd805 MK |
1015 | /* Make things normally linear. */ |
1016 | mach_msg_type_number_t search_start = 0; | |
c906108c SS |
1017 | /* Which thread in PROCS corresponds to each task thread, & the task. */ |
1018 | struct proc *matched[num_threads + 1]; | |
1019 | /* The last thread in INF->threads, so we can add to the end. */ | |
1020 | struct proc *last = 0; | |
0963b4bd | 1021 | /* The current thread we're considering. */ |
c906108c SS |
1022 | struct proc *thread = inf->threads; |
1023 | ||
4deab737 | 1024 | memset (matched, 0, sizeof (matched)); |
c906108c SS |
1025 | |
1026 | while (thread) | |
1027 | { | |
942fd805 | 1028 | mach_msg_type_number_t left; |
c906108c SS |
1029 | |
1030 | for (i = search_start, left = num_threads; left; i++, left--) | |
1031 | { | |
1032 | if (i >= num_threads) | |
c5aa993b | 1033 | i -= num_threads; /* I wrapped around. */ |
c906108c SS |
1034 | if (thread->port == threads[i]) |
1035 | /* We already know about this thread. */ | |
1036 | { | |
1037 | matched[i] = thread; | |
1038 | last = thread; | |
1039 | thread = thread->next; | |
1040 | search_start++; | |
1041 | break; | |
1042 | } | |
1043 | } | |
1044 | ||
c5aa993b | 1045 | if (!left) |
c906108c SS |
1046 | { |
1047 | proc_debug (thread, "died!"); | |
1048 | thread->port = MACH_PORT_NULL; | |
c5aa993b | 1049 | thread = _proc_free (thread); /* THREAD is dead. */ |
c4c50d37 DJ |
1050 | if (last) |
1051 | last->next = thread; | |
1052 | else | |
1053 | inf->threads = thread; | |
c906108c SS |
1054 | } |
1055 | } | |
1056 | ||
1057 | for (i = 0; i < num_threads; i++) | |
942fd805 MK |
1058 | { |
1059 | if (matched[i]) | |
1060 | /* Throw away the duplicate send right. */ | |
1061 | mach_port_deallocate (mach_task_self (), threads[i]); | |
1062 | else | |
1063 | /* THREADS[I] is a thread we don't know about yet! */ | |
1064 | { | |
617fd3b5 PA |
1065 | ptid_t ptid; |
1066 | ||
942fd805 | 1067 | thread = make_proc (inf, threads[i], next_thread_id++); |
c4c50d37 DJ |
1068 | if (last) |
1069 | last->next = thread; | |
1070 | else | |
1071 | inf->threads = thread; | |
942fd805 | 1072 | last = thread; |
a9a758e3 | 1073 | proc_debug (thread, "new thread: %lu", threads[i]); |
617fd3b5 | 1074 | |
fd79271b | 1075 | ptid = ptid_t (inf->pid, thread->tid, 0); |
617fd3b5 PA |
1076 | |
1077 | /* Tell GDB's generic thread code. */ | |
1078 | ||
d7e15655 | 1079 | if (inferior_ptid == ptid_t (inf->pid)) |
617fd3b5 PA |
1080 | /* This is the first time we're hearing about thread |
1081 | ids, after a fork-child. */ | |
14a8ad62 | 1082 | thread_change_ptid (this, inferior_ptid, ptid); |
617fd3b5 PA |
1083 | else if (inf->pending_execs != 0) |
1084 | /* This is a shell thread. */ | |
14a8ad62 | 1085 | add_thread_silent (this, ptid); |
617fd3b5 | 1086 | else |
14a8ad62 | 1087 | add_thread (this, ptid); |
942fd805 MK |
1088 | } |
1089 | } | |
c906108c | 1090 | |
c5aa993b | 1091 | vm_deallocate (mach_task_self (), |
942fd805 | 1092 | (vm_address_t) threads, (num_threads * sizeof (thread_t))); |
c906108c SS |
1093 | } |
1094 | } | |
942fd805 | 1095 | |
c906108c SS |
1096 | \f |
1097 | /* Makes sure that INF's thread list is synced with the actual process. */ | |
39efb398 | 1098 | int |
c906108c SS |
1099 | inf_update_procs (struct inf *inf) |
1100 | { | |
c5aa993b | 1101 | if (!inf->task) |
c906108c | 1102 | return 0; |
c5aa993b | 1103 | if (!inf->threads_up_to_date) |
14a8ad62 | 1104 | gnu_target->inf_validate_procs (inf); |
c906108c SS |
1105 | return !!inf->task; |
1106 | } | |
1107 | ||
1108 | /* Sets the resume_sc of each thread in inf. That of RUN_THREAD is set to 0, | |
1109 | and others are set to their run_sc if RUN_OTHERS is true, and otherwise | |
1110 | their pause_sc. */ | |
39efb398 | 1111 | void |
14a8ad62 ST |
1112 | gnu_nat_target::inf_set_threads_resume_sc (struct inf *inf, |
1113 | struct proc *run_thread, int run_others) | |
c906108c SS |
1114 | { |
1115 | struct proc *thread; | |
d8734c88 | 1116 | |
c906108c SS |
1117 | inf_update_procs (inf); |
1118 | for (thread = inf->threads; thread; thread = thread->next) | |
1119 | if (thread == run_thread) | |
1120 | thread->resume_sc = 0; | |
1121 | else if (run_others) | |
1122 | thread->resume_sc = thread->run_sc; | |
1123 | else | |
1124 | thread->resume_sc = thread->pause_sc; | |
1125 | } | |
942fd805 | 1126 | |
c906108c SS |
1127 | \f |
1128 | /* Cause INF to continue execution immediately; individual threads may still | |
1129 | be suspended (but their suspend counts will be updated). */ | |
39efb398 | 1130 | void |
14a8ad62 | 1131 | gnu_nat_target::inf_resume (struct inf *inf) |
c906108c SS |
1132 | { |
1133 | struct proc *thread; | |
1134 | ||
1135 | inf_update_procs (inf); | |
1136 | ||
1137 | for (thread = inf->threads; thread; thread = thread->next) | |
1138 | thread->sc = thread->resume_sc; | |
1139 | ||
1140 | if (inf->task) | |
1141 | { | |
c5aa993b | 1142 | if (!inf->pending_execs) |
c906108c SS |
1143 | /* Try to make sure our task count is correct -- in the case where |
1144 | we're waiting for an exec though, things are too volatile, so just | |
1145 | assume things will be reasonable (which they usually will be). */ | |
1146 | inf_validate_task_sc (inf); | |
1147 | inf->task->sc = 0; | |
1148 | } | |
1149 | ||
1150 | inf_update_suspends (inf); | |
1151 | } | |
1152 | ||
1153 | /* Cause INF to stop execution immediately; individual threads may still | |
1154 | be running. */ | |
39efb398 | 1155 | void |
14a8ad62 | 1156 | gnu_nat_target::inf_suspend (struct inf *inf) |
c906108c SS |
1157 | { |
1158 | struct proc *thread; | |
1159 | ||
1160 | inf_update_procs (inf); | |
1161 | ||
1162 | for (thread = inf->threads; thread; thread = thread->next) | |
1163 | thread->sc = thread->pause_sc; | |
1164 | ||
1165 | if (inf->task) | |
1166 | inf->task->sc = inf->pause_sc; | |
1167 | ||
1168 | inf_update_suspends (inf); | |
1169 | } | |
942fd805 | 1170 | |
c906108c | 1171 | \f |
942fd805 MK |
1172 | /* INF has one thread PROC that is in single-stepping mode. This |
1173 | function changes it to be PROC, changing any old step_thread to be | |
1174 | a normal one. A PROC of 0 clears any existing value. */ | |
c906108c | 1175 | void |
14a8ad62 | 1176 | gnu_nat_target::inf_set_step_thread (struct inf *inf, struct proc *thread) |
c906108c | 1177 | { |
bf62e5b4 | 1178 | gdb_assert (!thread || proc_is_thread (thread)); |
c906108c SS |
1179 | |
1180 | if (thread) | |
1181 | inf_debug (inf, "setting step thread: %d/%d", inf->pid, thread->tid); | |
1182 | else | |
1183 | inf_debug (inf, "clearing step thread"); | |
1184 | ||
1185 | if (inf->step_thread != thread) | |
1186 | { | |
1187 | if (inf->step_thread && inf->step_thread->port != MACH_PORT_NULL) | |
c5aa993b | 1188 | if (!proc_trace (inf->step_thread, 0)) |
c906108c SS |
1189 | return; |
1190 | if (thread && proc_trace (thread, 1)) | |
1191 | inf->step_thread = thread; | |
1192 | else | |
1193 | inf->step_thread = 0; | |
1194 | } | |
1195 | } | |
942fd805 | 1196 | |
c906108c SS |
1197 | \f |
1198 | /* Set up the thread resume_sc's so that only the signal thread is running | |
1199 | (plus whatever other thread are set to always run). Returns true if we | |
1200 | did so, or false if we can't find a signal thread. */ | |
39efb398 | 1201 | int |
14a8ad62 | 1202 | gnu_nat_target::inf_set_threads_resume_sc_for_signal_thread (struct inf *inf) |
c906108c SS |
1203 | { |
1204 | if (inf->signal_thread) | |
1205 | { | |
1206 | inf_set_threads_resume_sc (inf, inf->signal_thread, 0); | |
1207 | return 1; | |
1208 | } | |
1209 | else | |
1210 | return 0; | |
1211 | } | |
1212 | ||
1213 | static void | |
1214 | inf_update_signal_thread (struct inf *inf) | |
1215 | { | |
1216 | /* XXX for now we assume that if there's a msgport, the 2nd thread is | |
1217 | the signal thread. */ | |
1218 | inf->signal_thread = inf->threads ? inf->threads->next : 0; | |
1219 | } | |
942fd805 | 1220 | |
c906108c SS |
1221 | \f |
1222 | /* Detachs from INF's inferior task, letting it run once again... */ | |
1223 | void | |
14a8ad62 | 1224 | gnu_nat_target::inf_detach (struct inf *inf) |
c906108c SS |
1225 | { |
1226 | struct proc *task = inf->task; | |
1227 | ||
1228 | inf_debug (inf, "detaching..."); | |
1229 | ||
1230 | inf_clear_wait (inf); | |
1231 | inf_set_step_thread (inf, 0); | |
1232 | ||
1233 | if (task) | |
1234 | { | |
1235 | struct proc *thread; | |
1236 | ||
cce74817 JM |
1237 | inf_validate_procinfo (inf); |
1238 | ||
c906108c SS |
1239 | inf_set_traced (inf, 0); |
1240 | if (inf->stopped) | |
cce74817 JM |
1241 | { |
1242 | if (inf->nomsg) | |
1243 | inf_continue (inf); | |
1244 | else | |
a493e3e2 | 1245 | inf_signal (inf, GDB_SIGNAL_0); |
cce74817 | 1246 | } |
c906108c SS |
1247 | |
1248 | proc_restore_exc_port (task); | |
1249 | task->sc = inf->detach_sc; | |
1250 | ||
1251 | for (thread = inf->threads; thread; thread = thread->next) | |
1252 | { | |
1253 | proc_restore_exc_port (thread); | |
1254 | thread->sc = thread->detach_sc; | |
1255 | } | |
1256 | ||
1257 | inf_update_suspends (inf); | |
1258 | } | |
1259 | ||
1260 | inf_cleanup (inf); | |
1261 | } | |
1262 | ||
942fd805 MK |
1263 | /* Attaches INF to the process with process id PID, returning it in a |
1264 | suspended state suitable for debugging. */ | |
c906108c | 1265 | void |
14a8ad62 | 1266 | gnu_nat_target::inf_attach (struct inf *inf, int pid) |
c906108c SS |
1267 | { |
1268 | inf_debug (inf, "attaching: %d", pid); | |
1269 | ||
1270 | if (inf->pid) | |
1271 | inf_detach (inf); | |
1272 | ||
1273 | inf_startup (inf, pid); | |
1274 | } | |
942fd805 | 1275 | |
c906108c | 1276 | \f |
0963b4bd | 1277 | /* Makes sure that we've got our exception ports entrenched in the process. */ |
c5aa993b | 1278 | void |
14a8ad62 | 1279 | gnu_nat_target::inf_steal_exc_ports (struct inf *inf) |
c906108c SS |
1280 | { |
1281 | struct proc *thread; | |
1282 | ||
1283 | inf_debug (inf, "stealing exception ports"); | |
1284 | ||
0963b4bd | 1285 | inf_set_step_thread (inf, 0); /* The step thread is special. */ |
c906108c SS |
1286 | |
1287 | proc_steal_exc_port (inf->task, inf->event_port); | |
1288 | for (thread = inf->threads; thread; thread = thread->next) | |
1289 | proc_steal_exc_port (thread, MACH_PORT_NULL); | |
1290 | } | |
1291 | ||
1292 | /* Makes sure the process has its own exception ports. */ | |
c5aa993b | 1293 | void |
14a8ad62 | 1294 | gnu_nat_target::inf_restore_exc_ports (struct inf *inf) |
c906108c SS |
1295 | { |
1296 | struct proc *thread; | |
1297 | ||
1298 | inf_debug (inf, "restoring exception ports"); | |
1299 | ||
0963b4bd | 1300 | inf_set_step_thread (inf, 0); /* The step thread is special. */ |
c906108c SS |
1301 | |
1302 | proc_restore_exc_port (inf->task); | |
1303 | for (thread = inf->threads; thread; thread = thread->next) | |
1304 | proc_restore_exc_port (thread); | |
1305 | } | |
942fd805 | 1306 | |
c906108c SS |
1307 | \f |
1308 | /* Deliver signal SIG to INF. If INF is stopped, delivering a signal, even | |
1309 | signal 0, will continue it. INF is assumed to be in a paused state, and | |
1310 | the resume_sc's of INF's threads may be affected. */ | |
1311 | void | |
14a8ad62 | 1312 | gnu_nat_target::inf_signal (struct inf *inf, enum gdb_signal sig) |
c906108c | 1313 | { |
0947023d | 1314 | kern_return_t err = 0; |
2ea28649 | 1315 | int host_sig = gdb_signal_to_host (sig); |
c906108c | 1316 | |
2ea28649 | 1317 | #define NAME gdb_signal_to_name (sig) |
c906108c SS |
1318 | |
1319 | if (host_sig >= _NSIG) | |
1320 | /* A mach exception. Exceptions are encoded in the signal space by | |
1321 | putting them after _NSIG; this assumes they're positive (and not | |
1322 | extremely large)! */ | |
1323 | { | |
1324 | struct inf_wait *w = &inf->wait; | |
d8734c88 | 1325 | |
c906108c SS |
1326 | if (w->status.kind == TARGET_WAITKIND_STOPPED |
1327 | && w->status.value.sig == sig | |
1328 | && w->thread && !w->thread->aborted) | |
1329 | /* We're passing through the last exception we received. This is | |
1330 | kind of bogus, because exceptions are per-thread whereas gdb | |
1331 | treats signals as per-process. We just forward the exception to | |
1332 | the correct handler, even it's not for the same thread as TID -- | |
1333 | i.e., we pretend it's global. */ | |
1334 | { | |
1335 | struct exc_state *e = &w->exc; | |
d8734c88 | 1336 | |
c906108c | 1337 | inf_debug (inf, "passing through exception:" |
a9a758e3 | 1338 | " task = %lu, thread = %lu, exc = %d" |
c906108c SS |
1339 | ", code = %d, subcode = %d", |
1340 | w->thread->port, inf->task->port, | |
1341 | e->exception, e->code, e->subcode); | |
1342 | err = | |
1343 | exception_raise_request (e->handler, | |
1344 | e->reply, MACH_MSG_TYPE_MOVE_SEND_ONCE, | |
1345 | w->thread->port, inf->task->port, | |
1346 | e->exception, e->code, e->subcode); | |
1347 | } | |
1348 | else | |
8a3fe4f8 | 1349 | error (_("Can't forward spontaneous exception (%s)."), NAME); |
c906108c SS |
1350 | } |
1351 | else | |
1352 | /* A Unix signal. */ | |
c5aa993b JM |
1353 | if (inf->stopped) |
1354 | /* The process is stopped and expecting a signal. Just send off a | |
1355 | request and let it get handled when we resume everything. */ | |
1356 | { | |
1357 | inf_debug (inf, "sending %s to stopped process", NAME); | |
1358 | err = | |
1359 | INF_MSGPORT_RPC (inf, | |
1360 | msg_sig_post_untraced_request (msgport, | |
1361 | inf->event_port, | |
1362 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
1363 | host_sig, 0, | |
1364 | refport)); | |
1365 | if (!err) | |
1366 | /* Posting an untraced signal automatically continues it. | |
1367 | We clear this here rather than when we get the reply | |
1368 | because we'd rather assume it's not stopped when it | |
1369 | actually is, than the reverse. */ | |
1370 | inf->stopped = 0; | |
1371 | } | |
1372 | else | |
1373 | /* It's not expecting it. We have to let just the signal thread | |
1374 | run, and wait for it to get into a reasonable state before we | |
1375 | can continue the rest of the process. When we finally resume the | |
1376 | process the signal we request will be the very first thing that | |
0963b4bd | 1377 | happens. */ |
c5aa993b | 1378 | { |
942fd805 MK |
1379 | inf_debug (inf, "sending %s to unstopped process" |
1380 | " (so resuming signal thread)", NAME); | |
c5aa993b | 1381 | err = |
942fd805 MK |
1382 | INF_RESUME_MSGPORT_RPC (inf, |
1383 | msg_sig_post_untraced (msgport, host_sig, | |
1384 | 0, refport)); | |
c5aa993b | 1385 | } |
c906108c SS |
1386 | |
1387 | if (err == EIEIO) | |
0963b4bd | 1388 | /* Can't do too much... */ |
8a3fe4f8 | 1389 | warning (_("Can't deliver signal %s: No signal thread."), NAME); |
c906108c | 1390 | else if (err) |
8a3fe4f8 | 1391 | warning (_("Delivering signal %s: %s"), NAME, safe_strerror (err)); |
c906108c SS |
1392 | |
1393 | #undef NAME | |
1394 | } | |
942fd805 | 1395 | |
c906108c | 1396 | \f |
cce74817 JM |
1397 | /* Continue INF without delivering a signal. This is meant to be used |
1398 | when INF does not have a message port. */ | |
1399 | void | |
14a8ad62 | 1400 | gnu_nat_target::inf_continue (struct inf *inf) |
cce74817 JM |
1401 | { |
1402 | process_t proc; | |
0947023d | 1403 | kern_return_t err = proc_pid2proc (proc_server, inf->pid, &proc); |
cce74817 | 1404 | |
c5aa993b | 1405 | if (!err) |
cce74817 JM |
1406 | { |
1407 | inf_debug (inf, "continuing process"); | |
1408 | ||
1409 | err = proc_mark_cont (proc); | |
c5aa993b | 1410 | if (!err) |
cce74817 JM |
1411 | { |
1412 | struct proc *thread; | |
1413 | ||
1414 | for (thread = inf->threads; thread; thread = thread->next) | |
1415 | thread_resume (thread->port); | |
c5aa993b | 1416 | |
cce74817 JM |
1417 | inf->stopped = 0; |
1418 | } | |
1419 | } | |
1420 | ||
1421 | if (err) | |
8a3fe4f8 | 1422 | warning (_("Can't continue process: %s"), safe_strerror (err)); |
cce74817 | 1423 | } |
942fd805 | 1424 | |
cce74817 | 1425 | \f |
c906108c | 1426 | /* The inferior used for all gdb target ops. */ |
c289427b | 1427 | struct inf *gnu_current_inf = 0; |
c906108c SS |
1428 | |
1429 | /* The inferior being waited for by gnu_wait. Since GDB is decidely not | |
1430 | multi-threaded, we don't bother to lock this. */ | |
14a8ad62 | 1431 | static struct inf *waiting_inf; |
c906108c | 1432 | |
21389b7f TS |
1433 | /* MIG stubs are not yet ready for C++ compilation. */ |
1434 | extern "C" int exc_server (mach_msg_header_t *, mach_msg_header_t *); | |
1435 | extern "C" int msg_reply_server (mach_msg_header_t *, mach_msg_header_t *); | |
1436 | extern "C" int notify_server (mach_msg_header_t *, mach_msg_header_t *); | |
1437 | extern "C" int process_reply_server (mach_msg_header_t *, mach_msg_header_t *); | |
1438 | ||
0963b4bd | 1439 | /* Wait for something to happen in the inferior, returning what in STATUS. */ |
f6ac5f3d PA |
1440 | |
1441 | ptid_t | |
1442 | gnu_nat_target::wait (ptid_t ptid, struct target_waitstatus *status, | |
1443 | int options) | |
c906108c | 1444 | { |
c5aa993b JM |
1445 | struct msg |
1446 | { | |
1447 | mach_msg_header_t hdr; | |
1448 | mach_msg_type_t type; | |
1449 | int data[8000]; | |
942fd805 | 1450 | } msg; |
0947023d | 1451 | kern_return_t err; |
c906108c | 1452 | struct proc *thread; |
c289427b | 1453 | struct inf *inf = gnu_current_inf; |
c906108c | 1454 | |
bf62e5b4 | 1455 | gdb_assert (inf->task); |
c906108c SS |
1456 | |
1457 | if (!inf->threads && !inf->pending_execs) | |
1458 | /* No threads! Assume that maybe some outside agency is frobbing our | |
1459 | task, and really look for new threads. If we can't find any, just tell | |
1460 | the user to try again later. */ | |
1461 | { | |
1462 | inf_validate_procs (inf); | |
1463 | if (!inf->threads && !inf->task->dead) | |
8a3fe4f8 | 1464 | error (_("There are no threads; try again later.")); |
c906108c SS |
1465 | } |
1466 | ||
1467 | waiting_inf = inf; | |
1468 | ||
a068643d | 1469 | inf_debug (inf, "waiting for: %s", target_pid_to_str (ptid).c_str ()); |
c906108c | 1470 | |
c5aa993b | 1471 | rewait: |
c906108c SS |
1472 | if (proc_wait_pid != inf->pid && !inf->no_wait) |
1473 | /* Always get information on events from the proc server. */ | |
1474 | { | |
1475 | inf_debug (inf, "requesting wait on pid %d", inf->pid); | |
1476 | ||
1477 | if (proc_wait_pid) | |
1478 | /* The proc server is single-threaded, and only allows a single | |
0963b4bd | 1479 | outstanding wait request, so we have to cancel the previous one. */ |
c906108c SS |
1480 | { |
1481 | inf_debug (inf, "cancelling previous wait on pid %d", proc_wait_pid); | |
1482 | interrupt_operation (proc_server, 0); | |
1483 | } | |
1484 | ||
1485 | err = | |
1486 | proc_wait_request (proc_server, inf->event_port, inf->pid, WUNTRACED); | |
1487 | if (err) | |
8a3fe4f8 | 1488 | warning (_("wait request failed: %s"), safe_strerror (err)); |
c906108c SS |
1489 | else |
1490 | { | |
1491 | inf_debug (inf, "waits pending: %d", proc_waits_pending); | |
1492 | proc_wait_pid = inf->pid; | |
942fd805 MK |
1493 | /* Even if proc_waits_pending was > 0 before, we still won't |
1494 | get any other replies, because it was either from a | |
1495 | different INF, or a different process attached to INF -- | |
1496 | and the event port, which is the wait reply port, changes | |
0963b4bd | 1497 | when you switch processes. */ |
c906108c SS |
1498 | proc_waits_pending = 1; |
1499 | } | |
1500 | } | |
1501 | ||
1502 | inf_clear_wait (inf); | |
1503 | ||
1504 | /* What can happen? (1) Dead name notification; (2) Exceptions arrive; | |
1505 | (3) wait reply from the proc server. */ | |
1506 | ||
1507 | inf_debug (inf, "waiting for an event..."); | |
1508 | err = mach_msg (&msg.hdr, MACH_RCV_MSG | MACH_RCV_INTERRUPT, | |
1509 | 0, sizeof (struct msg), inf->event_port, | |
1510 | MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); | |
1511 | ||
1512 | /* Re-suspend the task. */ | |
1513 | inf_suspend (inf); | |
1514 | ||
1515 | if (!inf->task && inf->pending_execs) | |
1516 | /* When doing an exec, it's possible that the old task wasn't reused | |
1517 | (e.g., setuid execs). So if the task seems to have disappeared, | |
1518 | attempt to refetch it, as the pid should still be the same. */ | |
1519 | inf_set_pid (inf, inf->pid); | |
1520 | ||
1521 | if (err == EMACH_RCV_INTERRUPTED) | |
1522 | inf_debug (inf, "interrupted"); | |
1523 | else if (err) | |
8a3fe4f8 | 1524 | error (_("Couldn't wait for an event: %s"), safe_strerror (err)); |
c906108c SS |
1525 | else |
1526 | { | |
c5aa993b JM |
1527 | struct |
1528 | { | |
1529 | mach_msg_header_t hdr; | |
1530 | mach_msg_type_t err_type; | |
1531 | kern_return_t err; | |
1532 | char noise[200]; | |
1533 | } | |
1534 | reply; | |
c906108c SS |
1535 | |
1536 | inf_debug (inf, "event: msgid = %d", msg.hdr.msgh_id); | |
1537 | ||
1538 | /* Handle what we got. */ | |
c5aa993b JM |
1539 | if (!notify_server (&msg.hdr, &reply.hdr) |
1540 | && !exc_server (&msg.hdr, &reply.hdr) | |
1541 | && !process_reply_server (&msg.hdr, &reply.hdr) | |
1542 | && !msg_reply_server (&msg.hdr, &reply.hdr)) | |
c906108c | 1543 | /* Whatever it is, it's something strange. */ |
8a3fe4f8 | 1544 | error (_("Got a strange event, msg id = %d."), msg.hdr.msgh_id); |
c906108c SS |
1545 | |
1546 | if (reply.err) | |
8a3fe4f8 | 1547 | error (_("Handling event, msgid = %d: %s"), |
dc672865 | 1548 | msg.hdr.msgh_id, safe_strerror (reply.err)); |
c906108c SS |
1549 | } |
1550 | ||
1551 | if (inf->pending_execs) | |
1552 | /* We're waiting for the inferior to finish execing. */ | |
1553 | { | |
1554 | struct inf_wait *w = &inf->wait; | |
1555 | enum target_waitkind kind = w->status.kind; | |
1556 | ||
1557 | if (kind == TARGET_WAITKIND_SPURIOUS) | |
1558 | /* Since gdb is actually counting the number of times the inferior | |
1559 | stops, expecting one stop per exec, we only return major events | |
1560 | while execing. */ | |
1561 | { | |
1562 | w->suppress = 1; | |
c82f56d9 | 1563 | inf_debug (inf, "pending_execs, ignoring minor event"); |
c906108c SS |
1564 | } |
1565 | else if (kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 | 1566 | && w->status.value.sig == GDB_SIGNAL_TRAP) |
c906108c SS |
1567 | /* Ah hah! A SIGTRAP from the inferior while starting up probably |
1568 | means we've succesfully completed an exec! */ | |
1569 | { | |
c82f56d9 | 1570 | inf_debug (inf, "one pending exec completed"); |
c906108c SS |
1571 | } |
1572 | else if (kind == TARGET_WAITKIND_STOPPED) | |
1573 | /* It's possible that this signal is because of a crashed process | |
1574 | being handled by the hurd crash server; in this case, the process | |
1575 | will have an extra task suspend, which we need to know about. | |
1576 | Since the code in inf_resume that normally checks for this is | |
1577 | disabled while INF->pending_execs, we do the check here instead. */ | |
1578 | inf_validate_task_sc (inf); | |
1579 | } | |
1580 | ||
1581 | if (inf->wait.suppress) | |
1582 | /* Some totally spurious event happened that we don't consider | |
1583 | worth returning to gdb. Just keep waiting. */ | |
1584 | { | |
1585 | inf_debug (inf, "suppressing return, rewaiting..."); | |
1586 | inf_resume (inf); | |
1587 | goto rewait; | |
1588 | } | |
1589 | ||
1590 | /* Pass back out our results. */ | |
98d346c3 | 1591 | memcpy (status, &inf->wait.status, sizeof (*status)); |
c906108c SS |
1592 | |
1593 | thread = inf->wait.thread; | |
1594 | if (thread) | |
fd79271b | 1595 | ptid = ptid_t (inf->pid, thread->tid, 0); |
d7e15655 | 1596 | else if (ptid == minus_one_ptid) |
617fd3b5 | 1597 | thread = inf_tid_to_thread (inf, -1); |
c906108c | 1598 | else |
e38504b3 | 1599 | thread = inf_tid_to_thread (inf, ptid.lwp ()); |
c906108c SS |
1600 | |
1601 | if (!thread || thread->port == MACH_PORT_NULL) | |
942fd805 MK |
1602 | { |
1603 | /* TID is dead; try and find a new thread. */ | |
1604 | if (inf_update_procs (inf) && inf->threads) | |
fd79271b | 1605 | ptid = ptid_t (inf->pid, inf->threads->tid, 0); /* The first |
0963b4bd MS |
1606 | available |
1607 | thread. */ | |
942fd805 | 1608 | else |
617fd3b5 | 1609 | ptid = inferior_ptid; /* let wait_for_inferior handle exit case */ |
942fd805 | 1610 | } |
c906108c | 1611 | |
617fd3b5 | 1612 | if (thread |
d7e15655 | 1613 | && ptid != minus_one_ptid |
617fd3b5 | 1614 | && status->kind != TARGET_WAITKIND_SPURIOUS |
c906108c | 1615 | && inf->pause_sc == 0 && thread->pause_sc == 0) |
942fd805 MK |
1616 | /* If something actually happened to THREAD, make sure we |
1617 | suspend it. */ | |
c906108c SS |
1618 | { |
1619 | thread->sc = 1; | |
1620 | inf_update_suspends (inf); | |
c5aa993b | 1621 | } |
c906108c | 1622 | |
c29705b7 | 1623 | inf_debug (inf, "returning ptid = %s, %s", |
a068643d | 1624 | target_pid_to_str (ptid).c_str (), |
e9f8e3f1 | 1625 | target_waitstatus_to_string (status).c_str ()); |
c906108c | 1626 | |
617fd3b5 | 1627 | return ptid; |
c906108c | 1628 | } |
942fd805 | 1629 | |
c906108c SS |
1630 | \f |
1631 | /* The rpc handler called by exc_server. */ | |
0947023d | 1632 | kern_return_t |
c906108c SS |
1633 | S_exception_raise_request (mach_port_t port, mach_port_t reply_port, |
1634 | thread_t thread_port, task_t task_port, | |
1635 | int exception, int code, int subcode) | |
1636 | { | |
1637 | struct inf *inf = waiting_inf; | |
1638 | struct proc *thread = inf_port_to_thread (inf, thread_port); | |
1639 | ||
1640 | inf_debug (waiting_inf, | |
a9a758e3 | 1641 | "thread = %lu, task = %lu, exc = %d, code = %d, subcode = %d", |
942fd805 | 1642 | thread_port, task_port, exception, code, subcode); |
c906108c SS |
1643 | |
1644 | if (!thread) | |
1645 | /* We don't know about thread? */ | |
1646 | { | |
1647 | inf_update_procs (inf); | |
1648 | thread = inf_port_to_thread (inf, thread_port); | |
1649 | if (!thread) | |
1650 | /* Give up, the generating thread is gone. */ | |
1651 | return 0; | |
1652 | } | |
1653 | ||
1654 | mach_port_deallocate (mach_task_self (), thread_port); | |
1655 | mach_port_deallocate (mach_task_self (), task_port); | |
1656 | ||
c5aa993b | 1657 | if (!thread->aborted) |
c906108c SS |
1658 | /* THREAD hasn't been aborted since this exception happened (abortion |
1659 | clears any exception state), so it must be real. */ | |
1660 | { | |
1661 | /* Store away the details; this will destroy any previous info. */ | |
1662 | inf->wait.thread = thread; | |
1663 | ||
1664 | inf->wait.status.kind = TARGET_WAITKIND_STOPPED; | |
1665 | ||
1666 | if (exception == EXC_BREAKPOINT) | |
1667 | /* GDB likes to get SIGTRAP for breakpoints. */ | |
1668 | { | |
a493e3e2 | 1669 | inf->wait.status.value.sig = GDB_SIGNAL_TRAP; |
c906108c SS |
1670 | mach_port_deallocate (mach_task_self (), reply_port); |
1671 | } | |
1672 | else | |
1673 | /* Record the exception so that we can forward it later. */ | |
1674 | { | |
1675 | if (thread->exc_port == port) | |
1676 | { | |
a9a758e3 | 1677 | inf_debug (waiting_inf, "Handler is thread exception port <%lu>", |
c906108c SS |
1678 | thread->saved_exc_port); |
1679 | inf->wait.exc.handler = thread->saved_exc_port; | |
1680 | } | |
1681 | else | |
1682 | { | |
a9a758e3 | 1683 | inf_debug (waiting_inf, "Handler is task exception port <%lu>", |
c906108c SS |
1684 | inf->task->saved_exc_port); |
1685 | inf->wait.exc.handler = inf->task->saved_exc_port; | |
bf62e5b4 | 1686 | gdb_assert (inf->task->exc_port == port); |
c906108c SS |
1687 | } |
1688 | if (inf->wait.exc.handler != MACH_PORT_NULL) | |
0963b4bd | 1689 | /* Add a reference to the exception handler. */ |
c906108c SS |
1690 | mach_port_mod_refs (mach_task_self (), |
1691 | inf->wait.exc.handler, MACH_PORT_RIGHT_SEND, | |
1692 | 1); | |
1693 | ||
1694 | inf->wait.exc.exception = exception; | |
1695 | inf->wait.exc.code = code; | |
1696 | inf->wait.exc.subcode = subcode; | |
1697 | inf->wait.exc.reply = reply_port; | |
1698 | ||
0963b4bd MS |
1699 | /* Exceptions are encoded in the signal space by putting |
1700 | them after _NSIG; this assumes they're positive (and not | |
1701 | extremely large)! */ | |
c906108c | 1702 | inf->wait.status.value.sig = |
2ea28649 | 1703 | gdb_signal_from_host (_NSIG + exception); |
c906108c SS |
1704 | } |
1705 | } | |
1706 | else | |
30baf67b | 1707 | /* A suppressed exception, which ignore. */ |
c906108c SS |
1708 | { |
1709 | inf->wait.suppress = 1; | |
1710 | mach_port_deallocate (mach_task_self (), reply_port); | |
1711 | } | |
1712 | ||
1713 | return 0; | |
1714 | } | |
942fd805 | 1715 | |
c906108c SS |
1716 | \f |
1717 | /* Fill in INF's wait field after a task has died without giving us more | |
1718 | detailed information. */ | |
f04a82ef | 1719 | static void |
c906108c SS |
1720 | inf_task_died_status (struct inf *inf) |
1721 | { | |
0963b4bd MS |
1722 | warning (_("Pid %d died with unknown exit status, using SIGKILL."), |
1723 | inf->pid); | |
c906108c | 1724 | inf->wait.status.kind = TARGET_WAITKIND_SIGNALLED; |
a493e3e2 | 1725 | inf->wait.status.value.sig = GDB_SIGNAL_KILL; |
c906108c SS |
1726 | } |
1727 | ||
1728 | /* Notify server routines. The only real one is dead name notification. */ | |
0947023d | 1729 | kern_return_t |
c906108c SS |
1730 | do_mach_notify_dead_name (mach_port_t notify, mach_port_t dead_port) |
1731 | { | |
1732 | struct inf *inf = waiting_inf; | |
1733 | ||
a9a758e3 | 1734 | inf_debug (waiting_inf, "port = %lu", dead_port); |
c906108c SS |
1735 | |
1736 | if (inf->task && inf->task->port == dead_port) | |
1737 | { | |
1738 | proc_debug (inf->task, "is dead"); | |
1739 | inf->task->port = MACH_PORT_NULL; | |
1740 | if (proc_wait_pid == inf->pid) | |
1741 | /* We have a wait outstanding on the process, which will return more | |
1742 | detailed information, so delay until we get that. */ | |
1743 | inf->wait.suppress = 1; | |
1744 | else | |
1745 | /* We never waited for the process (maybe it wasn't a child), so just | |
1746 | pretend it got a SIGKILL. */ | |
1747 | inf_task_died_status (inf); | |
1748 | } | |
1749 | else | |
1750 | { | |
1751 | struct proc *thread = inf_port_to_thread (inf, dead_port); | |
d8734c88 | 1752 | |
c906108c SS |
1753 | if (thread) |
1754 | { | |
1755 | proc_debug (thread, "is dead"); | |
1756 | thread->port = MACH_PORT_NULL; | |
1757 | } | |
f90b2b1d JK |
1758 | |
1759 | if (inf->task->dead) | |
1760 | /* Since the task is dead, its threads are dying with it. */ | |
1761 | inf->wait.suppress = 1; | |
c906108c SS |
1762 | } |
1763 | ||
1764 | mach_port_deallocate (mach_task_self (), dead_port); | |
0963b4bd | 1765 | inf->threads_up_to_date = 0; /* Just in case. */ |
c906108c SS |
1766 | |
1767 | return 0; | |
1768 | } | |
942fd805 | 1769 | |
c906108c | 1770 | \f |
3398af6a | 1771 | #define ILL_RPC(fun, ...) \ |
842c05cd | 1772 | extern kern_return_t fun (__VA_ARGS__); \ |
3398af6a TS |
1773 | kern_return_t fun (__VA_ARGS__) \ |
1774 | { \ | |
1775 | warning (_("illegal rpc: %s"), #fun); \ | |
1776 | return 0; \ | |
1777 | } | |
942fd805 | 1778 | |
3398af6a TS |
1779 | ILL_RPC (do_mach_notify_no_senders, |
1780 | mach_port_t notify, mach_port_mscount_t count) | |
1781 | ILL_RPC (do_mach_notify_port_deleted, | |
1782 | mach_port_t notify, mach_port_t name) | |
1783 | ILL_RPC (do_mach_notify_msg_accepted, | |
1784 | mach_port_t notify, mach_port_t name) | |
1785 | ILL_RPC (do_mach_notify_port_destroyed, | |
1786 | mach_port_t notify, mach_port_t name) | |
1787 | ILL_RPC (do_mach_notify_send_once, | |
1788 | mach_port_t notify) | |
c906108c SS |
1789 | \f |
1790 | /* Process_reply server routines. We only use process_wait_reply. */ | |
1791 | ||
0947023d TS |
1792 | kern_return_t |
1793 | S_proc_wait_reply (mach_port_t reply, kern_return_t err, | |
c906108c SS |
1794 | int status, int sigcode, rusage_t rusage, pid_t pid) |
1795 | { | |
1796 | struct inf *inf = waiting_inf; | |
1797 | ||
1798 | inf_debug (inf, "err = %s, pid = %d, status = 0x%x, sigcode = %d", | |
dc672865 | 1799 | err ? safe_strerror (err) : "0", pid, status, sigcode); |
c906108c SS |
1800 | |
1801 | if (err && proc_wait_pid && (!inf->task || !inf->task->port)) | |
1802 | /* Ack. The task has died, but the task-died notification code didn't | |
1803 | tell anyone because it thought a more detailed reply from the | |
1804 | procserver was forthcoming. However, we now learn that won't | |
1805 | happen... So we have to act like the task just died, and this time, | |
1806 | tell the world. */ | |
1807 | inf_task_died_status (inf); | |
1808 | ||
1809 | if (--proc_waits_pending == 0) | |
1810 | /* PROC_WAIT_PID represents the most recent wait. We will always get | |
1811 | replies in order because the proc server is single threaded. */ | |
1812 | proc_wait_pid = 0; | |
1813 | ||
1814 | inf_debug (inf, "waits pending now: %d", proc_waits_pending); | |
1815 | ||
1816 | if (err) | |
1817 | { | |
1818 | if (err != EINTR) | |
1819 | { | |
0963b4bd MS |
1820 | warning (_("Can't wait for pid %d: %s"), |
1821 | inf->pid, safe_strerror (err)); | |
c906108c SS |
1822 | inf->no_wait = 1; |
1823 | ||
1824 | /* Since we can't see the inferior's signals, don't trap them. */ | |
14a8ad62 | 1825 | gnu_target->inf_set_traced (inf, 0); |
c906108c SS |
1826 | } |
1827 | } | |
1828 | else if (pid == inf->pid) | |
1829 | { | |
1830 | store_waitstatus (&inf->wait.status, status); | |
1831 | if (inf->wait.status.kind == TARGET_WAITKIND_STOPPED) | |
1832 | /* The process has sent us a signal, and stopped itself in a sane | |
1833 | state pending our actions. */ | |
1834 | { | |
1835 | inf_debug (inf, "process has stopped itself"); | |
1836 | inf->stopped = 1; | |
1837 | } | |
1838 | } | |
1839 | else | |
1840 | inf->wait.suppress = 1; /* Something odd happened. Ignore. */ | |
1841 | ||
1842 | return 0; | |
1843 | } | |
1844 | ||
3398af6a TS |
1845 | ILL_RPC (S_proc_setmsgport_reply, |
1846 | mach_port_t reply_port, kern_return_t return_code, | |
1847 | mach_port_t oldmsgport) | |
1848 | ILL_RPC (S_proc_getmsgport_reply, | |
1849 | mach_port_t reply_port, kern_return_t return_code, | |
8071c5ce | 1850 | mach_port_t msgports, mach_msg_type_name_t msgportsPoly) |
3398af6a TS |
1851 | ILL_RPC (S_proc_pid2task_reply, |
1852 | mach_port_t reply_port, kern_return_t return_code, mach_port_t task) | |
1853 | ILL_RPC (S_proc_task2pid_reply, | |
1854 | mach_port_t reply_port, kern_return_t return_code, pid_t pid) | |
1855 | ILL_RPC (S_proc_task2proc_reply, | |
8071c5ce DM |
1856 | mach_port_t reply_port, kern_return_t return_code, |
1857 | mach_port_t proc, mach_msg_type_name_t procPoly) | |
3398af6a TS |
1858 | ILL_RPC (S_proc_proc2task_reply, |
1859 | mach_port_t reply_port, kern_return_t return_code, mach_port_t task) | |
1860 | ILL_RPC (S_proc_pid2proc_reply, | |
8071c5ce DM |
1861 | mach_port_t reply_port, kern_return_t return_code, |
1862 | mach_port_t proc, mach_msg_type_name_t procPoly) | |
3398af6a TS |
1863 | ILL_RPC (S_proc_getprocinfo_reply, |
1864 | mach_port_t reply_port, kern_return_t return_code, | |
1865 | int flags, procinfo_t procinfo, mach_msg_type_number_t procinfoCnt, | |
1866 | data_t threadwaits, mach_msg_type_number_t threadwaitsCnt) | |
1867 | ILL_RPC (S_proc_getprocargs_reply, | |
1868 | mach_port_t reply_port, kern_return_t return_code, | |
1869 | data_t procargs, mach_msg_type_number_t procargsCnt) | |
1870 | ILL_RPC (S_proc_getprocenv_reply, | |
1871 | mach_port_t reply_port, kern_return_t return_code, | |
1872 | data_t procenv, mach_msg_type_number_t procenvCnt) | |
1873 | ILL_RPC (S_proc_getloginid_reply, | |
1874 | mach_port_t reply_port, kern_return_t return_code, pid_t login_id) | |
1875 | ILL_RPC (S_proc_getloginpids_reply, | |
1876 | mach_port_t reply_port, kern_return_t return_code, | |
1877 | pidarray_t pids, mach_msg_type_number_t pidsCnt) | |
1878 | ILL_RPC (S_proc_getlogin_reply, | |
1879 | mach_port_t reply_port, kern_return_t return_code, string_t logname) | |
1880 | ILL_RPC (S_proc_getsid_reply, | |
1881 | mach_port_t reply_port, kern_return_t return_code, pid_t sid) | |
1882 | ILL_RPC (S_proc_getsessionpgids_reply, | |
1883 | mach_port_t reply_port, kern_return_t return_code, | |
1884 | pidarray_t pgidset, mach_msg_type_number_t pgidsetCnt) | |
1885 | ILL_RPC (S_proc_getsessionpids_reply, | |
1886 | mach_port_t reply_port, kern_return_t return_code, | |
1887 | pidarray_t pidset, mach_msg_type_number_t pidsetCnt) | |
1888 | ILL_RPC (S_proc_getsidport_reply, | |
1889 | mach_port_t reply_port, kern_return_t return_code, | |
1890 | mach_port_t sessport) | |
1891 | ILL_RPC (S_proc_getpgrp_reply, | |
1892 | mach_port_t reply_port, kern_return_t return_code, pid_t pgrp) | |
1893 | ILL_RPC (S_proc_getpgrppids_reply, | |
1894 | mach_port_t reply_port, kern_return_t return_code, | |
1895 | pidarray_t pidset, mach_msg_type_number_t pidsetCnt) | |
1896 | ILL_RPC (S_proc_get_tty_reply, | |
1897 | mach_port_t reply_port, kern_return_t return_code, mach_port_t tty) | |
1898 | ILL_RPC (S_proc_getnports_reply, | |
1899 | mach_port_t reply_port, kern_return_t return_code, | |
1900 | mach_msg_type_number_t nports) | |
1901 | ILL_RPC (S_proc_is_important_reply, | |
1902 | mach_port_t reply_port, kern_return_t return_code, | |
1903 | boolean_t essential) | |
1904 | ILL_RPC (S_proc_get_code_reply, | |
1905 | mach_port_t reply_port, kern_return_t return_code, | |
1906 | vm_address_t start_code, vm_address_t end_code) | |
c906108c SS |
1907 | \f |
1908 | /* Msg_reply server routines. We only use msg_sig_post_untraced_reply. */ | |
1909 | ||
0947023d TS |
1910 | kern_return_t |
1911 | S_msg_sig_post_untraced_reply (mach_port_t reply, kern_return_t err) | |
c906108c SS |
1912 | { |
1913 | struct inf *inf = waiting_inf; | |
1914 | ||
1915 | if (err == EBUSY) | |
1916 | /* EBUSY is what we get when the crash server has grabbed control of the | |
1917 | process and doesn't like what signal we tried to send it. Just act | |
1918 | like the process stopped (using a signal of 0 should mean that the | |
1919 | *next* time the user continues, it will pass signal 0, which the crash | |
1920 | server should like). */ | |
1921 | { | |
1922 | inf->wait.status.kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 1923 | inf->wait.status.value.sig = GDB_SIGNAL_0; |
c906108c SS |
1924 | } |
1925 | else if (err) | |
8a3fe4f8 | 1926 | warning (_("Signal delivery failed: %s"), safe_strerror (err)); |
c906108c SS |
1927 | |
1928 | if (err) | |
1929 | /* We only get this reply when we've posted a signal to a process which we | |
1930 | thought was stopped, and which we expected to continue after the signal. | |
1931 | Given that the signal has failed for some reason, it's reasonable to | |
1932 | assume it's still stopped. */ | |
1933 | inf->stopped = 1; | |
1934 | else | |
1935 | inf->wait.suppress = 1; | |
1936 | ||
1937 | return 0; | |
1938 | } | |
1939 | ||
3398af6a | 1940 | ILL_RPC (S_msg_sig_post_reply, |
0947023d | 1941 | mach_port_t reply, kern_return_t err) |
c906108c SS |
1942 | \f |
1943 | /* Returns the number of messages queued for the receive right PORT. */ | |
1944 | static mach_port_msgcount_t | |
1945 | port_msgs_queued (mach_port_t port) | |
1946 | { | |
1947 | struct mach_port_status status; | |
0947023d | 1948 | kern_return_t err = |
d8734c88 | 1949 | mach_port_get_receive_status (mach_task_self (), port, &status); |
c906108c SS |
1950 | |
1951 | if (err) | |
1952 | return 0; | |
1953 | else | |
1954 | return status.mps_msgcount; | |
1955 | } | |
942fd805 | 1956 | |
c906108c SS |
1957 | \f |
1958 | /* Resume execution of the inferior process. | |
1959 | ||
1960 | If STEP is nonzero, single-step it. | |
1961 | If SIGNAL is nonzero, give it that signal. | |
1962 | ||
1963 | TID STEP: | |
1964 | -1 true Single step the current thread allowing other threads to run. | |
1965 | -1 false Continue the current thread allowing other threads to run. | |
1966 | X true Single step the given thread, don't allow any others to run. | |
1967 | X false Continue the given thread, do not allow any others to run. | |
1968 | (Where X, of course, is anything except -1) | |
1969 | ||
1970 | Note that a resume may not `take' if there are pending exceptions/&c | |
1971 | still unprocessed from the last resume we did (any given resume may result | |
0963b4bd MS |
1972 | in multiple events returned by wait). */ |
1973 | ||
f6ac5f3d PA |
1974 | void |
1975 | gnu_nat_target::resume (ptid_t ptid, int step, enum gdb_signal sig) | |
c906108c SS |
1976 | { |
1977 | struct proc *step_thread = 0; | |
617fd3b5 | 1978 | int resume_all; |
c289427b | 1979 | struct inf *inf = gnu_current_inf; |
c906108c | 1980 | |
617fd3b5 | 1981 | inf_debug (inf, "ptid = %s, step = %d, sig = %d", |
a068643d | 1982 | target_pid_to_str (ptid).c_str (), step, sig); |
c906108c | 1983 | |
cce74817 | 1984 | inf_validate_procinfo (inf); |
c5aa993b | 1985 | |
a493e3e2 | 1986 | if (sig != GDB_SIGNAL_0 || inf->stopped) |
cce74817 | 1987 | { |
a493e3e2 | 1988 | if (sig == GDB_SIGNAL_0 && inf->nomsg) |
cce74817 JM |
1989 | inf_continue (inf); |
1990 | else | |
1991 | inf_signal (inf, sig); | |
1992 | } | |
c906108c SS |
1993 | else if (inf->wait.exc.reply != MACH_PORT_NULL) |
1994 | /* We received an exception to which we have chosen not to forward, so | |
1995 | abort the faulting thread, which will perhaps retake it. */ | |
1996 | { | |
1997 | proc_abort (inf->wait.thread, 1); | |
8a3fe4f8 | 1998 | warning (_("Aborting %s with unforwarded exception %s."), |
c906108c | 1999 | proc_string (inf->wait.thread), |
2ea28649 | 2000 | gdb_signal_to_name (inf->wait.status.value.sig)); |
c906108c SS |
2001 | } |
2002 | ||
2003 | if (port_msgs_queued (inf->event_port)) | |
2004 | /* If there are still messages in our event queue, don't bother resuming | |
0963b4bd | 2005 | the process, as we're just going to stop it right away anyway. */ |
c906108c SS |
2006 | return; |
2007 | ||
2008 | inf_update_procs (inf); | |
2009 | ||
617fd3b5 | 2010 | /* A specific PTID means `step only this process id'. */ |
d7e15655 | 2011 | resume_all = ptid == minus_one_ptid; |
617fd3b5 PA |
2012 | |
2013 | if (resume_all) | |
c906108c SS |
2014 | /* Allow all threads to run, except perhaps single-stepping one. */ |
2015 | { | |
dfd4cc63 | 2016 | inf_debug (inf, "running all threads; tid = %d", |
e99b03dc | 2017 | inferior_ptid.pid ()); |
0963b4bd | 2018 | ptid = inferior_ptid; /* What to step. */ |
c906108c SS |
2019 | inf_set_threads_resume_sc (inf, 0, 1); |
2020 | } | |
2021 | else | |
2022 | /* Just allow a single thread to run. */ | |
2023 | { | |
e38504b3 | 2024 | struct proc *thread = inf_tid_to_thread (inf, ptid.lwp ()); |
d8734c88 | 2025 | |
c5aa993b | 2026 | if (!thread) |
617fd3b5 | 2027 | error (_("Can't run single thread id %s: no such thread!"), |
a068643d TT |
2028 | target_pid_to_str (ptid).c_str ()); |
2029 | inf_debug (inf, "running one thread: %s", | |
2030 | target_pid_to_str (ptid).c_str ()); | |
c906108c SS |
2031 | inf_set_threads_resume_sc (inf, thread, 0); |
2032 | } | |
2033 | ||
2034 | if (step) | |
2035 | { | |
e38504b3 | 2036 | step_thread = inf_tid_to_thread (inf, ptid.lwp ()); |
c5aa993b | 2037 | if (!step_thread) |
617fd3b5 | 2038 | warning (_("Can't step thread id %s: no such thread."), |
a068643d | 2039 | target_pid_to_str (ptid).c_str ()); |
c906108c | 2040 | else |
a068643d TT |
2041 | inf_debug (inf, "stepping thread: %s", |
2042 | target_pid_to_str (ptid).c_str ()); | |
c906108c SS |
2043 | } |
2044 | if (step_thread != inf->step_thread) | |
2045 | inf_set_step_thread (inf, step_thread); | |
2046 | ||
2047 | inf_debug (inf, "here we go..."); | |
2048 | inf_resume (inf); | |
2049 | } | |
942fd805 | 2050 | |
c906108c | 2051 | \f |
f6ac5f3d PA |
2052 | void |
2053 | gnu_nat_target::kill () | |
c906108c | 2054 | { |
c289427b | 2055 | struct proc *task = gnu_current_inf->task; |
d8734c88 | 2056 | |
c906108c SS |
2057 | if (task) |
2058 | { | |
2059 | proc_debug (task, "terminating..."); | |
2060 | task_terminate (task->port); | |
c289427b | 2061 | inf_set_pid (gnu_current_inf, -1); |
c906108c | 2062 | } |
bc1e6c81 | 2063 | target_mourn_inferior (inferior_ptid); |
c906108c SS |
2064 | } |
2065 | ||
2066 | /* Clean up after the inferior dies. */ | |
f6ac5f3d PA |
2067 | void |
2068 | gnu_nat_target::mourn_inferior () | |
c906108c | 2069 | { |
c289427b PA |
2070 | inf_debug (gnu_current_inf, "rip"); |
2071 | inf_detach (gnu_current_inf); | |
f6ac5f3d | 2072 | inf_child_target::mourn_inferior (); |
c906108c | 2073 | } |
942fd805 | 2074 | |
c906108c SS |
2075 | \f |
2076 | /* Fork an inferior process, and start debugging it. */ | |
2077 | ||
2078 | /* Set INFERIOR_PID to the first thread available in the child, if any. */ | |
2079 | static int | |
fba45db2 | 2080 | inf_pick_first_thread (void) |
c906108c | 2081 | { |
c289427b | 2082 | if (gnu_current_inf->task && gnu_current_inf->threads) |
c906108c | 2083 | /* The first thread. */ |
c289427b | 2084 | return gnu_current_inf->threads->tid; |
c906108c SS |
2085 | else |
2086 | /* What may be the next thread. */ | |
2087 | return next_thread_id; | |
2088 | } | |
2089 | ||
2090 | static struct inf * | |
fba45db2 | 2091 | cur_inf (void) |
c906108c | 2092 | { |
c289427b PA |
2093 | if (!gnu_current_inf) |
2094 | gnu_current_inf = make_inf (); | |
2095 | return gnu_current_inf; | |
c906108c SS |
2096 | } |
2097 | ||
a9617a42 TS |
2098 | static void |
2099 | gnu_ptrace_me (void) | |
2100 | { | |
2101 | /* We're in the child; make this process stop as soon as it execs. */ | |
2102 | struct inf *inf = cur_inf (); | |
2103 | inf_debug (inf, "tracing self"); | |
2104 | if (ptrace (PTRACE_TRACEME) != 0) | |
0db8980c | 2105 | trace_start_error_with_name ("ptrace"); |
a9617a42 TS |
2106 | } |
2107 | ||
f6ac5f3d PA |
2108 | void |
2109 | gnu_nat_target::create_inferior (const char *exec_file, | |
2110 | const std::string &allargs, | |
2111 | char **env, | |
2112 | int from_tty) | |
c906108c SS |
2113 | { |
2114 | struct inf *inf = cur_inf (); | |
b4d1e8c7 | 2115 | int pid; |
c906108c | 2116 | |
b4d1e8c7 | 2117 | inf_debug (inf, "creating inferior"); |
c906108c | 2118 | |
078f2fc9 ST |
2119 | if (!target_is_pushed (this)) |
2120 | push_target (this); | |
2121 | ||
a9617a42 | 2122 | pid = fork_inferior (exec_file, allargs, env, gnu_ptrace_me, |
e69860f1 | 2123 | NULL, NULL, NULL, NULL); |
c906108c | 2124 | |
2090129c SDJ |
2125 | /* We have something that executes now. We'll be running through |
2126 | the shell at this point (if startup-with-shell is true), but the | |
2127 | pid shouldn't change. */ | |
14a8ad62 | 2128 | add_thread_silent (this, ptid_t (pid)); |
2090129c | 2129 | |
b4d1e8c7 PA |
2130 | /* Attach to the now stopped child, which is actually a shell... */ |
2131 | inf_debug (inf, "attaching to child: %d", pid); | |
c906108c | 2132 | |
b4d1e8c7 | 2133 | inf_attach (inf, pid); |
617fd3b5 | 2134 | |
c82f56d9 | 2135 | inf->pending_execs = 1; |
b4d1e8c7 PA |
2136 | inf->nomsg = 1; |
2137 | inf->traced = 1; | |
c906108c | 2138 | |
b4d1e8c7 | 2139 | /* Now let the child run again, knowing that it will stop |
0963b4bd | 2140 | immediately because of the ptrace. */ |
b4d1e8c7 PA |
2141 | inf_resume (inf); |
2142 | ||
2143 | /* We now have thread info. */ | |
14a8ad62 | 2144 | thread_change_ptid (this, inferior_ptid, |
fd79271b | 2145 | ptid_t (inf->pid, inf_pick_first_thread (), 0)); |
c906108c | 2146 | |
2090129c SDJ |
2147 | gdb_startup_inferior (pid, START_INFERIOR_TRAPS_EXPECTED); |
2148 | ||
c82f56d9 | 2149 | inf->pending_execs = 0; |
c752a4cc TS |
2150 | /* Get rid of the old shell threads. */ |
2151 | prune_threads (); | |
c906108c | 2152 | |
cce74817 | 2153 | inf_validate_procinfo (inf); |
c906108c SS |
2154 | inf_update_signal_thread (inf); |
2155 | inf_set_traced (inf, inf->want_signals); | |
2156 | ||
2157 | /* Execing the process will have trashed our exception ports; steal them | |
2158 | back (or make sure they're restored if the user wants that). */ | |
2159 | if (inf->want_exceptions) | |
2160 | inf_steal_exc_ports (inf); | |
2161 | else | |
2162 | inf_restore_exc_ports (inf); | |
c906108c SS |
2163 | } |
2164 | ||
c906108c | 2165 | \f |
c906108c SS |
2166 | /* Attach to process PID, then initialize for debugging it |
2167 | and wait for the trace-trap that results from attaching. */ | |
f6ac5f3d PA |
2168 | void |
2169 | gnu_nat_target::attach (const char *args, int from_tty) | |
c906108c SS |
2170 | { |
2171 | int pid; | |
c906108c | 2172 | struct inf *inf = cur_inf (); |
181e7f93 | 2173 | struct inferior *inferior; |
c906108c | 2174 | |
74164c56 | 2175 | pid = parse_pid_to_attach (args); |
c906108c | 2176 | |
74164c56 | 2177 | if (pid == getpid ()) /* Trying to masturbate? */ |
8a3fe4f8 | 2178 | error (_("I refuse to debug myself!")); |
c906108c SS |
2179 | |
2180 | if (from_tty) | |
2181 | { | |
d9fa87f4 | 2182 | const char *exec_file = get_exec_file (0); |
c906108c SS |
2183 | |
2184 | if (exec_file) | |
2185 | printf_unfiltered ("Attaching to program `%s', pid %d\n", | |
2186 | exec_file, pid); | |
2187 | else | |
2188 | printf_unfiltered ("Attaching to pid %d\n", pid); | |
c906108c SS |
2189 | } |
2190 | ||
2191 | inf_debug (inf, "attaching to pid: %d", pid); | |
2192 | ||
2193 | inf_attach (inf, pid); | |
a9ab7422 | 2194 | |
f6ac5f3d | 2195 | push_target (this); |
a9ab7422 | 2196 | |
6c95b8df PA |
2197 | inferior = current_inferior (); |
2198 | inferior_appeared (inferior, pid); | |
181e7f93 | 2199 | inferior->attach_flag = 1; |
7f9f62ba | 2200 | |
c906108c SS |
2201 | inf_update_procs (inf); |
2202 | ||
fd79271b | 2203 | inferior_ptid = ptid_t (pid, inf_pick_first_thread (), 0); |
c906108c | 2204 | |
b83266a0 SS |
2205 | /* We have to initialize the terminal settings now, since the code |
2206 | below might try to restore them. */ | |
223ffa71 | 2207 | target_terminal::init (); |
c5aa993b | 2208 | |
c906108c SS |
2209 | /* If the process was stopped before we attached, make it continue the next |
2210 | time the user does a continue. */ | |
cce74817 JM |
2211 | inf_validate_procinfo (inf); |
2212 | ||
2213 | inf_update_signal_thread (inf); | |
2214 | inf_set_traced (inf, inf->want_signals); | |
c906108c | 2215 | |
0963b4bd MS |
2216 | #if 0 /* Do we need this? */ |
2217 | renumber_threads (0); /* Give our threads reasonable names. */ | |
c906108c SS |
2218 | #endif |
2219 | } | |
942fd805 | 2220 | |
c906108c SS |
2221 | \f |
2222 | /* Take a program previously attached to and detaches it. | |
2223 | The program resumes execution and will no longer stop | |
2224 | on signals, etc. We'd better not have left any breakpoints | |
2225 | in the program or it'll die when it hits one. For this | |
2226 | to work, it may be necessary for the process to have been | |
2227 | previously attached. It *might* work if the program was | |
2228 | started via fork. */ | |
f6ac5f3d PA |
2229 | void |
2230 | gnu_nat_target::detach (inferior *inf, int from_tty) | |
c906108c | 2231 | { |
7f9f62ba PA |
2232 | int pid; |
2233 | ||
c906108c SS |
2234 | if (from_tty) |
2235 | { | |
d9fa87f4 | 2236 | const char *exec_file = get_exec_file (0); |
d8734c88 | 2237 | |
c906108c SS |
2238 | if (exec_file) |
2239 | printf_unfiltered ("Detaching from program `%s' pid %d\n", | |
c289427b | 2240 | exec_file, gnu_current_inf->pid); |
c906108c | 2241 | else |
c289427b | 2242 | printf_unfiltered ("Detaching from pid %d\n", gnu_current_inf->pid); |
c906108c | 2243 | } |
c5aa993b | 2244 | |
c289427b | 2245 | pid = gnu_current_inf->pid; |
7f9f62ba | 2246 | |
c289427b | 2247 | inf_detach (gnu_current_inf); |
c906108c | 2248 | |
39f77062 | 2249 | inferior_ptid = null_ptid; |
14a8ad62 | 2250 | detach_inferior (find_inferior_pid (this, pid)); |
c906108c | 2251 | |
2d0a338c | 2252 | maybe_unpush_target (); |
c906108c | 2253 | } |
942fd805 | 2254 | \f |
c906108c | 2255 | |
f6ac5f3d PA |
2256 | void |
2257 | gnu_nat_target::stop (ptid_t ptid) | |
c906108c | 2258 | { |
f6ac5f3d | 2259 | error (_("stop target function not implemented")); |
c906108c SS |
2260 | } |
2261 | ||
57810aa7 | 2262 | bool |
f6ac5f3d | 2263 | gnu_nat_target::thread_alive (ptid_t ptid) |
c906108c | 2264 | { |
c289427b PA |
2265 | inf_update_procs (gnu_current_inf); |
2266 | return !!inf_tid_to_thread (gnu_current_inf, | |
e38504b3 | 2267 | ptid.lwp ()); |
c906108c | 2268 | } |
942fd805 | 2269 | |
c906108c | 2270 | \f |
942fd805 MK |
2271 | /* Read inferior task's LEN bytes from ADDR and copy it to MYADDR in |
2272 | gdb's address space. Return 0 on failure; number of bytes read | |
2273 | otherwise. */ | |
9b3f3ee6 TS |
2274 | static int |
2275 | gnu_read_inferior (task_t task, CORE_ADDR addr, gdb_byte *myaddr, int length) | |
c906108c | 2276 | { |
0947023d | 2277 | kern_return_t err; |
c906108c SS |
2278 | vm_address_t low_address = (vm_address_t) trunc_page (addr); |
2279 | vm_size_t aligned_length = | |
c5aa993b JM |
2280 | (vm_size_t) round_page (addr + length) - low_address; |
2281 | pointer_t copied; | |
25c0bd04 | 2282 | mach_msg_type_number_t copy_count; |
c906108c | 2283 | |
0963b4bd | 2284 | /* Get memory from inferior with page aligned addresses. */ |
c906108c SS |
2285 | err = vm_read (task, low_address, aligned_length, &copied, ©_count); |
2286 | if (err) | |
2287 | return 0; | |
2288 | ||
0963b4bd MS |
2289 | err = hurd_safe_copyin (myaddr, (void *) (addr - low_address + copied), |
2290 | length); | |
c906108c SS |
2291 | if (err) |
2292 | { | |
8a3fe4f8 | 2293 | warning (_("Read from inferior faulted: %s"), safe_strerror (err)); |
c906108c SS |
2294 | length = 0; |
2295 | } | |
2296 | ||
2297 | err = vm_deallocate (mach_task_self (), copied, copy_count); | |
2298 | if (err) | |
0963b4bd MS |
2299 | warning (_("gnu_read_inferior vm_deallocate failed: %s"), |
2300 | safe_strerror (err)); | |
c906108c SS |
2301 | |
2302 | return length; | |
2303 | } | |
2304 | ||
2305 | #define CHK_GOTO_OUT(str,ret) \ | |
2306 | do if (ret != KERN_SUCCESS) { errstr = #str; goto out; } while(0) | |
2307 | ||
c5aa993b JM |
2308 | struct vm_region_list |
2309 | { | |
c906108c | 2310 | struct vm_region_list *next; |
c5aa993b JM |
2311 | vm_prot_t protection; |
2312 | vm_address_t start; | |
2313 | vm_size_t length; | |
c906108c SS |
2314 | }; |
2315 | ||
c5aa993b | 2316 | struct obstack region_obstack; |
c906108c | 2317 | |
942fd805 MK |
2318 | /* Write gdb's LEN bytes from MYADDR and copy it to ADDR in inferior |
2319 | task's address space. */ | |
9b3f3ee6 TS |
2320 | static int |
2321 | gnu_write_inferior (task_t task, CORE_ADDR addr, | |
2322 | const gdb_byte *myaddr, int length) | |
c906108c | 2323 | { |
0947023d | 2324 | kern_return_t err; |
c5aa993b JM |
2325 | vm_address_t low_address = (vm_address_t) trunc_page (addr); |
2326 | vm_size_t aligned_length = | |
2327 | (vm_size_t) round_page (addr + length) - low_address; | |
2328 | pointer_t copied; | |
25c0bd04 | 2329 | mach_msg_type_number_t copy_count; |
c5aa993b | 2330 | int deallocate = 0; |
c906108c | 2331 | |
924514e1 | 2332 | const char *errstr = "Bug in gnu_write_inferior"; |
c906108c SS |
2333 | |
2334 | struct vm_region_list *region_element; | |
be903358 | 2335 | struct vm_region_list *region_head = NULL; |
c906108c | 2336 | |
0963b4bd | 2337 | /* Get memory from inferior with page aligned addresses. */ |
c906108c SS |
2338 | err = vm_read (task, |
2339 | low_address, | |
2340 | aligned_length, | |
2341 | &copied, | |
2342 | ©_count); | |
2343 | CHK_GOTO_OUT ("gnu_write_inferior vm_read failed", err); | |
2344 | ||
2345 | deallocate++; | |
2346 | ||
96ffcb62 | 2347 | err = hurd_safe_copyout ((void *) (addr - low_address + copied), |
942fd805 | 2348 | myaddr, length); |
c906108c SS |
2349 | CHK_GOTO_OUT ("Write to inferior faulted", err); |
2350 | ||
2351 | obstack_init (®ion_obstack); | |
2352 | ||
2353 | /* Do writes atomically. | |
942fd805 | 2354 | First check for holes and unwritable memory. */ |
c906108c | 2355 | { |
c5aa993b JM |
2356 | vm_size_t remaining_length = aligned_length; |
2357 | vm_address_t region_address = low_address; | |
c906108c SS |
2358 | |
2359 | struct vm_region_list *scan; | |
2360 | ||
c5aa993b | 2361 | while (region_address < low_address + aligned_length) |
c906108c SS |
2362 | { |
2363 | vm_prot_t protection; | |
2364 | vm_prot_t max_protection; | |
2365 | vm_inherit_t inheritance; | |
2366 | boolean_t shared; | |
2367 | mach_port_t object_name; | |
2368 | vm_offset_t offset; | |
c5aa993b JM |
2369 | vm_size_t region_length = remaining_length; |
2370 | vm_address_t old_address = region_address; | |
2371 | ||
c906108c SS |
2372 | err = vm_region (task, |
2373 | ®ion_address, | |
2374 | ®ion_length, | |
2375 | &protection, | |
2376 | &max_protection, | |
2377 | &inheritance, | |
2378 | &shared, | |
2379 | &object_name, | |
2380 | &offset); | |
2381 | CHK_GOTO_OUT ("vm_region failed", err); | |
2382 | ||
0963b4bd | 2383 | /* Check for holes in memory. */ |
c906108c SS |
2384 | if (old_address != region_address) |
2385 | { | |
a9a758e3 | 2386 | warning (_("No memory at 0x%lx. Nothing written"), |
c906108c SS |
2387 | old_address); |
2388 | err = KERN_SUCCESS; | |
2389 | length = 0; | |
2390 | goto out; | |
2391 | } | |
2392 | ||
2393 | if (!(max_protection & VM_PROT_WRITE)) | |
2394 | { | |
a9a758e3 | 2395 | warning (_("Memory at address 0x%lx is unwritable. " |
0963b4bd | 2396 | "Nothing written"), |
c906108c SS |
2397 | old_address); |
2398 | err = KERN_SUCCESS; | |
2399 | length = 0; | |
2400 | goto out; | |
2401 | } | |
2402 | ||
0963b4bd | 2403 | /* Chain the regions for later use. */ |
8d749320 | 2404 | region_element = XOBNEW (®ion_obstack, struct vm_region_list); |
c5aa993b | 2405 | |
c906108c | 2406 | region_element->protection = protection; |
c5aa993b JM |
2407 | region_element->start = region_address; |
2408 | region_element->length = region_length; | |
c906108c | 2409 | |
0963b4bd | 2410 | /* Chain the regions along with protections. */ |
c906108c | 2411 | region_element->next = region_head; |
c5aa993b JM |
2412 | region_head = region_element; |
2413 | ||
c906108c SS |
2414 | region_address += region_length; |
2415 | remaining_length = remaining_length - region_length; | |
2416 | } | |
2417 | ||
2418 | /* If things fail after this, we give up. | |
942fd805 | 2419 | Somebody is messing up inferior_task's mappings. */ |
c5aa993b | 2420 | |
0963b4bd | 2421 | /* Enable writes to the chained vm regions. */ |
c906108c SS |
2422 | for (scan = region_head; scan; scan = scan->next) |
2423 | { | |
c906108c SS |
2424 | if (!(scan->protection & VM_PROT_WRITE)) |
2425 | { | |
2426 | err = vm_protect (task, | |
2427 | scan->start, | |
2428 | scan->length, | |
2429 | FALSE, | |
2430 | scan->protection | VM_PROT_WRITE); | |
2431 | CHK_GOTO_OUT ("vm_protect: enable write failed", err); | |
2432 | } | |
2433 | } | |
2434 | ||
2435 | err = vm_write (task, | |
2436 | low_address, | |
2437 | copied, | |
2438 | aligned_length); | |
2439 | CHK_GOTO_OUT ("vm_write failed", err); | |
c5aa993b | 2440 | |
0963b4bd | 2441 | /* Set up the original region protections, if they were changed. */ |
c906108c SS |
2442 | for (scan = region_head; scan; scan = scan->next) |
2443 | { | |
c906108c SS |
2444 | if (!(scan->protection & VM_PROT_WRITE)) |
2445 | { | |
2446 | err = vm_protect (task, | |
2447 | scan->start, | |
2448 | scan->length, | |
2449 | FALSE, | |
2450 | scan->protection); | |
2451 | CHK_GOTO_OUT ("vm_protect: enable write failed", err); | |
2452 | } | |
2453 | } | |
2454 | } | |
2455 | ||
c5aa993b | 2456 | out: |
c906108c SS |
2457 | if (deallocate) |
2458 | { | |
2459 | obstack_free (®ion_obstack, 0); | |
c5aa993b | 2460 | |
c906108c SS |
2461 | (void) vm_deallocate (mach_task_self (), |
2462 | copied, | |
2463 | copy_count); | |
2464 | } | |
2465 | ||
2466 | if (err != KERN_SUCCESS) | |
2467 | { | |
8a3fe4f8 | 2468 | warning (_("%s: %s"), errstr, mach_error_string (err)); |
c906108c SS |
2469 | return 0; |
2470 | } | |
2471 | ||
2472 | return length; | |
2473 | } | |
942fd805 | 2474 | |
c906108c | 2475 | \f |
9b3f3ee6 | 2476 | |
edcc890f YQ |
2477 | /* Implement the to_xfer_partial target_ops method for |
2478 | TARGET_OBJECT_MEMORY. */ | |
9b3f3ee6 | 2479 | |
9b409511 | 2480 | static enum target_xfer_status |
9b3f3ee6 | 2481 | gnu_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 | 2482 | CORE_ADDR memaddr, ULONGEST len, ULONGEST *xfered_len) |
c906108c | 2483 | { |
c289427b PA |
2484 | task_t task = (gnu_current_inf |
2485 | ? (gnu_current_inf->task | |
2486 | ? gnu_current_inf->task->port : 0) | |
942fd805 | 2487 | : 0); |
9b3f3ee6 | 2488 | int res; |
c906108c SS |
2489 | |
2490 | if (task == MACH_PORT_NULL) | |
9b3f3ee6 TS |
2491 | return TARGET_XFER_E_IO; |
2492 | ||
2493 | if (writebuf != NULL) | |
2494 | { | |
2495 | inf_debug (gnu_current_inf, "writing %s[%s] <-- %s", | |
b55e14c7 | 2496 | paddress (target_gdbarch (), memaddr), pulongest (len), |
9b3f3ee6 TS |
2497 | host_address_to_string (writebuf)); |
2498 | res = gnu_write_inferior (task, memaddr, writebuf, len); | |
2499 | } | |
c906108c SS |
2500 | else |
2501 | { | |
9b3f3ee6 | 2502 | inf_debug (gnu_current_inf, "reading %s[%s] --> %s", |
b55e14c7 | 2503 | paddress (target_gdbarch (), memaddr), pulongest (len), |
9b3f3ee6 TS |
2504 | host_address_to_string (readbuf)); |
2505 | res = gnu_read_inferior (task, memaddr, readbuf, len); | |
2506 | } | |
9b409511 | 2507 | gdb_assert (res >= 0); |
9b3f3ee6 TS |
2508 | if (res == 0) |
2509 | return TARGET_XFER_E_IO; | |
9b409511 YQ |
2510 | else |
2511 | { | |
2512 | *xfered_len = (ULONGEST) res; | |
2513 | return TARGET_XFER_OK; | |
2514 | } | |
9b3f3ee6 TS |
2515 | } |
2516 | ||
9c4ac400 ST |
2517 | /* GNU does not have auxv, but we can at least fake the AT_ENTRY entry for PIE |
2518 | binaries. */ | |
2519 | static enum target_xfer_status | |
2520 | gnu_xfer_auxv (gdb_byte *readbuf, const gdb_byte *writebuf, | |
2521 | CORE_ADDR memaddr, ULONGEST len, ULONGEST *xfered_len) | |
2522 | { | |
2523 | task_t task = (gnu_current_inf | |
2524 | ? (gnu_current_inf->task | |
2525 | ? gnu_current_inf->task->port : 0) | |
2526 | : 0); | |
2527 | process_t proc; | |
9c4ac400 ST |
2528 | kern_return_t err; |
2529 | vm_address_t entry; | |
2530 | ElfW(auxv_t) auxv[2]; | |
2531 | ||
2532 | if (task == MACH_PORT_NULL) | |
2533 | return TARGET_XFER_E_IO; | |
2534 | if (writebuf != NULL) | |
2535 | return TARGET_XFER_E_IO; | |
2536 | ||
2537 | if (memaddr == sizeof (auxv)) | |
2538 | return TARGET_XFER_EOF; | |
2539 | if (memaddr > sizeof (auxv)) | |
2540 | return TARGET_XFER_E_IO; | |
2541 | ||
2542 | err = proc_task2proc (proc_server, task, &proc); | |
2543 | if (err != 0) | |
2544 | return TARGET_XFER_E_IO; | |
2545 | ||
2546 | /* Get entry from proc server. */ | |
2547 | err = proc_get_entry (proc, &entry); | |
2548 | if (err != 0) | |
2549 | return TARGET_XFER_E_IO; | |
2550 | ||
2551 | /* Fake auxv entry. */ | |
2552 | auxv[0].a_type = AT_ENTRY; | |
2553 | auxv[0].a_un.a_val = entry; | |
2554 | auxv[1].a_type = AT_NULL; | |
2555 | auxv[1].a_un.a_val = 0; | |
2556 | ||
2557 | inf_debug (gnu_current_inf, "reading auxv %s[%s] --> %s", | |
2558 | paddress (target_gdbarch (), memaddr), pulongest (len), | |
2559 | host_address_to_string (readbuf)); | |
2560 | ||
2561 | if (memaddr + len > sizeof (auxv)) | |
2562 | len = sizeof (auxv) - memaddr; | |
2563 | ||
2564 | memcpy (readbuf, (gdb_byte *) &auxv + memaddr, len); | |
2565 | *xfered_len = len; | |
2566 | ||
2567 | return TARGET_XFER_OK; | |
2568 | } | |
2569 | ||
9b3f3ee6 TS |
2570 | /* Target to_xfer_partial implementation. */ |
2571 | ||
f6ac5f3d PA |
2572 | enum target_xfer_status |
2573 | gnu_nat_target::xfer_partial (enum target_object object, | |
2574 | const char *annex, gdb_byte *readbuf, | |
2575 | const gdb_byte *writebuf, ULONGEST offset, | |
2576 | ULONGEST len, ULONGEST *xfered_len) | |
9b3f3ee6 TS |
2577 | { |
2578 | switch (object) | |
2579 | { | |
2580 | case TARGET_OBJECT_MEMORY: | |
9b409511 | 2581 | return gnu_xfer_memory (readbuf, writebuf, offset, len, xfered_len); |
9c4ac400 ST |
2582 | case TARGET_OBJECT_AUXV: |
2583 | return gnu_xfer_auxv (readbuf, writebuf, offset, len, xfered_len); | |
9b3f3ee6 | 2584 | default: |
2ed4b548 | 2585 | return TARGET_XFER_E_IO; |
c906108c SS |
2586 | } |
2587 | } | |
942fd805 | 2588 | |
57e76fac | 2589 | /* Call FUNC on each memory region in the task. */ |
f6ac5f3d PA |
2590 | |
2591 | int | |
2592 | gnu_nat_target::find_memory_regions (find_memory_region_ftype func, | |
2593 | void *data) | |
57e76fac | 2594 | { |
0947023d | 2595 | kern_return_t err; |
57e76fac MS |
2596 | task_t task; |
2597 | vm_address_t region_address, last_region_address, last_region_end; | |
2598 | vm_prot_t last_protection; | |
2599 | ||
c289427b | 2600 | if (gnu_current_inf == 0 || gnu_current_inf->task == 0) |
57e76fac | 2601 | return 0; |
c289427b | 2602 | task = gnu_current_inf->task->port; |
57e76fac MS |
2603 | if (task == MACH_PORT_NULL) |
2604 | return 0; | |
2605 | ||
2606 | region_address = last_region_address = last_region_end = VM_MIN_ADDRESS; | |
2607 | last_protection = VM_PROT_NONE; | |
2608 | while (region_address < VM_MAX_ADDRESS) | |
2609 | { | |
2610 | vm_prot_t protection; | |
2611 | vm_prot_t max_protection; | |
2612 | vm_inherit_t inheritance; | |
2613 | boolean_t shared; | |
2614 | mach_port_t object_name; | |
2615 | vm_offset_t offset; | |
2616 | vm_size_t region_length = VM_MAX_ADDRESS - region_address; | |
57e76fac MS |
2617 | |
2618 | err = vm_region (task, | |
2619 | ®ion_address, | |
2620 | ®ion_length, | |
2621 | &protection, | |
2622 | &max_protection, | |
2623 | &inheritance, | |
2624 | &shared, | |
2625 | &object_name, | |
2626 | &offset); | |
2627 | if (err == KERN_NO_SPACE) | |
2628 | break; | |
2629 | if (err != KERN_SUCCESS) | |
2630 | { | |
8a3fe4f8 | 2631 | warning (_("vm_region failed: %s"), mach_error_string (err)); |
57e76fac MS |
2632 | return -1; |
2633 | } | |
2634 | ||
2635 | if (protection == last_protection && region_address == last_region_end) | |
2636 | /* This region is contiguous with and indistinguishable from | |
2637 | the previous one, so we just extend that one. */ | |
2638 | last_region_end = region_address += region_length; | |
2639 | else | |
2640 | { | |
2641 | /* This region is distinct from the last one we saw, so report | |
2642 | that previous one. */ | |
2643 | if (last_protection != VM_PROT_NONE) | |
2644 | (*func) (last_region_address, | |
2645 | last_region_end - last_region_address, | |
2646 | last_protection & VM_PROT_READ, | |
2647 | last_protection & VM_PROT_WRITE, | |
2648 | last_protection & VM_PROT_EXECUTE, | |
4f69f4c2 | 2649 | 1, /* MODIFIED is unknown, pass it as true. */ |
57e76fac MS |
2650 | data); |
2651 | last_region_address = region_address; | |
2652 | last_region_end = region_address += region_length; | |
2653 | last_protection = protection; | |
2654 | } | |
2655 | } | |
47f21bcc | 2656 | |
1a113c93 MS |
2657 | /* Report the final region. */ |
2658 | if (last_region_end > last_region_address && last_protection != VM_PROT_NONE) | |
2659 | (*func) (last_region_address, last_region_end - last_region_address, | |
2660 | last_protection & VM_PROT_READ, | |
2661 | last_protection & VM_PROT_WRITE, | |
2662 | last_protection & VM_PROT_EXECUTE, | |
4f69f4c2 | 2663 | 1, /* MODIFIED is unknown, pass it as true. */ |
1a113c93 | 2664 | data); |
47f21bcc MS |
2665 | |
2666 | return 0; | |
57e76fac MS |
2667 | } |
2668 | ||
c906108c | 2669 | \f |
ed9a39eb | 2670 | /* Return printable description of proc. */ |
f90b2b1d | 2671 | char * |
ed9a39eb JM |
2672 | proc_string (struct proc *proc) |
2673 | { | |
2674 | static char tid_str[80]; | |
d8734c88 | 2675 | |
ed9a39eb | 2676 | if (proc_is_task (proc)) |
8c042590 | 2677 | xsnprintf (tid_str, sizeof (tid_str), "process %d", proc->inf->pid); |
ed9a39eb | 2678 | else |
8c042590 PM |
2679 | xsnprintf (tid_str, sizeof (tid_str), "Thread %d.%d", |
2680 | proc->inf->pid, proc->tid); | |
ed9a39eb JM |
2681 | return tid_str; |
2682 | } | |
2683 | ||
a068643d | 2684 | std::string |
f6ac5f3d | 2685 | gnu_nat_target::pid_to_str (ptid_t ptid) |
ed9a39eb | 2686 | { |
c289427b | 2687 | struct inf *inf = gnu_current_inf; |
e38504b3 | 2688 | int tid = ptid.lwp (); |
ed9a39eb JM |
2689 | struct proc *thread = inf_tid_to_thread (inf, tid); |
2690 | ||
2691 | if (thread) | |
2692 | return proc_string (thread); | |
2693 | else | |
a068643d | 2694 | return string_printf ("bogus thread id %d", tid); |
ed9a39eb | 2695 | } |
942fd805 | 2696 | |
c906108c | 2697 | \f |
c906108c SS |
2698 | /* User task commands. */ |
2699 | ||
28578e6b YQ |
2700 | static struct cmd_list_element *set_task_cmd_list = 0; |
2701 | static struct cmd_list_element *show_task_cmd_list = 0; | |
c906108c SS |
2702 | /* User thread commands. */ |
2703 | ||
2704 | /* Commands with a prefix of `set/show thread'. */ | |
2705 | extern struct cmd_list_element *thread_cmd_list; | |
2706 | struct cmd_list_element *set_thread_cmd_list = NULL; | |
2707 | struct cmd_list_element *show_thread_cmd_list = NULL; | |
2708 | ||
2709 | /* Commands with a prefix of `set/show thread default'. */ | |
2710 | struct cmd_list_element *set_thread_default_cmd_list = NULL; | |
2711 | struct cmd_list_element *show_thread_default_cmd_list = NULL; | |
2712 | ||
2713 | static void | |
981a3fb3 | 2714 | set_thread_cmd (const char *args, int from_tty) |
c906108c | 2715 | { |
0963b4bd MS |
2716 | printf_unfiltered ("\"set thread\" must be followed by the " |
2717 | "name of a thread property, or \"default\".\n"); | |
c906108c SS |
2718 | } |
2719 | ||
2720 | static void | |
981a3fb3 | 2721 | show_thread_cmd (const char *args, int from_tty) |
c906108c | 2722 | { |
0963b4bd MS |
2723 | printf_unfiltered ("\"show thread\" must be followed by the " |
2724 | "name of a thread property, or \"default\".\n"); | |
c906108c SS |
2725 | } |
2726 | ||
2727 | static void | |
981a3fb3 | 2728 | set_thread_default_cmd (const char *args, int from_tty) |
c906108c | 2729 | { |
0963b4bd MS |
2730 | printf_unfiltered ("\"set thread default\" must be followed " |
2731 | "by the name of a thread property.\n"); | |
c906108c SS |
2732 | } |
2733 | ||
2734 | static void | |
981a3fb3 | 2735 | show_thread_default_cmd (const char *args, int from_tty) |
c906108c | 2736 | { |
0963b4bd MS |
2737 | printf_unfiltered ("\"show thread default\" must be followed " |
2738 | "by the name of a thread property.\n"); | |
c906108c SS |
2739 | } |
2740 | ||
2741 | static int | |
924514e1 | 2742 | parse_int_arg (const char *args, const char *cmd_prefix) |
c906108c SS |
2743 | { |
2744 | if (args) | |
2745 | { | |
2746 | char *arg_end; | |
2747 | int val = strtoul (args, &arg_end, 10); | |
d8734c88 | 2748 | |
c906108c SS |
2749 | if (*args && *arg_end == '\0') |
2750 | return val; | |
2751 | } | |
0963b4bd MS |
2752 | error (_("Illegal argument for \"%s\" command, should be an integer."), |
2753 | cmd_prefix); | |
c906108c SS |
2754 | } |
2755 | ||
2756 | static int | |
924514e1 TS |
2757 | _parse_bool_arg (const char *args, const char *t_val, const char *f_val, |
2758 | const char *cmd_prefix) | |
c906108c SS |
2759 | { |
2760 | if (!args || strcmp (args, t_val) == 0) | |
2761 | return 1; | |
2762 | else if (strcmp (args, f_val) == 0) | |
2763 | return 0; | |
2764 | else | |
0963b4bd MS |
2765 | error (_("Illegal argument for \"%s\" command, " |
2766 | "should be \"%s\" or \"%s\"."), | |
c906108c SS |
2767 | cmd_prefix, t_val, f_val); |
2768 | } | |
2769 | ||
2770 | #define parse_bool_arg(args, cmd_prefix) \ | |
2771 | _parse_bool_arg (args, "on", "off", cmd_prefix) | |
2772 | ||
2773 | static void | |
924514e1 | 2774 | check_empty (const char *args, const char *cmd_prefix) |
c906108c SS |
2775 | { |
2776 | if (args) | |
8a3fe4f8 | 2777 | error (_("Garbage after \"%s\" command: `%s'"), cmd_prefix, args); |
c906108c SS |
2778 | } |
2779 | ||
2780 | /* Returns the alive thread named by INFERIOR_PID, or signals an error. */ | |
2781 | static struct proc * | |
fba45db2 | 2782 | cur_thread (void) |
c906108c SS |
2783 | { |
2784 | struct inf *inf = cur_inf (); | |
617fd3b5 | 2785 | struct proc *thread = inf_tid_to_thread (inf, |
e38504b3 | 2786 | inferior_ptid.lwp ()); |
c906108c | 2787 | if (!thread) |
8a3fe4f8 | 2788 | error (_("No current thread.")); |
c906108c SS |
2789 | return thread; |
2790 | } | |
2791 | ||
2792 | /* Returns the current inferior, but signals an error if it has no task. */ | |
2793 | static struct inf * | |
fba45db2 | 2794 | active_inf (void) |
c906108c SS |
2795 | { |
2796 | struct inf *inf = cur_inf (); | |
d8734c88 | 2797 | |
c5aa993b | 2798 | if (!inf->task) |
8a3fe4f8 | 2799 | error (_("No current process.")); |
c906108c SS |
2800 | return inf; |
2801 | } | |
942fd805 | 2802 | |
c906108c SS |
2803 | \f |
2804 | static void | |
785102a7 | 2805 | set_task_pause_cmd (int arg, int from_tty) |
c906108c SS |
2806 | { |
2807 | struct inf *inf = cur_inf (); | |
2808 | int old_sc = inf->pause_sc; | |
2809 | ||
785102a7 | 2810 | inf->pause_sc = arg; |
c906108c SS |
2811 | |
2812 | if (old_sc == 0 && inf->pause_sc != 0) | |
2813 | /* If the task is currently unsuspended, immediately suspend it, | |
2814 | otherwise wait until the next time it gets control. */ | |
14a8ad62 | 2815 | gnu_target->inf_suspend (inf); |
c906108c SS |
2816 | } |
2817 | ||
785102a7 | 2818 | static void |
5fed81ff | 2819 | set_task_pause_cmd (const char *args, int from_tty) |
785102a7 TS |
2820 | { |
2821 | set_task_pause_cmd (parse_bool_arg (args, "set task pause"), from_tty); | |
2822 | } | |
2823 | ||
c906108c | 2824 | static void |
5fed81ff | 2825 | show_task_pause_cmd (const char *args, int from_tty) |
c906108c SS |
2826 | { |
2827 | struct inf *inf = cur_inf (); | |
d8734c88 | 2828 | |
c906108c SS |
2829 | check_empty (args, "show task pause"); |
2830 | printf_unfiltered ("The inferior task %s suspended while gdb has control.\n", | |
2831 | inf->task | |
2832 | ? (inf->pause_sc == 0 ? "isn't" : "is") | |
2833 | : (inf->pause_sc == 0 ? "won't be" : "will be")); | |
2834 | } | |
2835 | ||
2836 | static void | |
5fed81ff | 2837 | set_task_detach_sc_cmd (const char *args, int from_tty) |
c906108c | 2838 | { |
0963b4bd MS |
2839 | cur_inf ()->detach_sc = parse_int_arg (args, |
2840 | "set task detach-suspend-count"); | |
c906108c SS |
2841 | } |
2842 | ||
2843 | static void | |
5fed81ff | 2844 | show_task_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
2845 | { |
2846 | check_empty (args, "show task detach-suspend-count"); | |
0963b4bd MS |
2847 | printf_unfiltered ("The inferior task will be left with a " |
2848 | "suspend count of %d when detaching.\n", | |
c906108c SS |
2849 | cur_inf ()->detach_sc); |
2850 | } | |
942fd805 | 2851 | |
c906108c SS |
2852 | \f |
2853 | static void | |
5fed81ff | 2854 | set_thread_default_pause_cmd (const char *args, int from_tty) |
c906108c SS |
2855 | { |
2856 | struct inf *inf = cur_inf (); | |
d8734c88 | 2857 | |
c906108c SS |
2858 | inf->default_thread_pause_sc = |
2859 | parse_bool_arg (args, "set thread default pause") ? 0 : 1; | |
2860 | } | |
2861 | ||
2862 | static void | |
5fed81ff | 2863 | show_thread_default_pause_cmd (const char *args, int from_tty) |
c906108c SS |
2864 | { |
2865 | struct inf *inf = cur_inf (); | |
2866 | int sc = inf->default_thread_pause_sc; | |
d8734c88 | 2867 | |
c906108c SS |
2868 | check_empty (args, "show thread default pause"); |
2869 | printf_unfiltered ("New threads %s suspended while gdb has control%s.\n", | |
2870 | sc ? "are" : "aren't", | |
2871 | !sc && inf->pause_sc ? " (but the task is)" : ""); | |
2872 | } | |
2873 | ||
2874 | static void | |
5fed81ff | 2875 | set_thread_default_run_cmd (const char *args, int from_tty) |
c906108c SS |
2876 | { |
2877 | struct inf *inf = cur_inf (); | |
d8734c88 | 2878 | |
c906108c SS |
2879 | inf->default_thread_run_sc = |
2880 | parse_bool_arg (args, "set thread default run") ? 0 : 1; | |
2881 | } | |
2882 | ||
2883 | static void | |
5fed81ff | 2884 | show_thread_default_run_cmd (const char *args, int from_tty) |
c906108c SS |
2885 | { |
2886 | struct inf *inf = cur_inf (); | |
d8734c88 | 2887 | |
c906108c SS |
2888 | check_empty (args, "show thread default run"); |
2889 | printf_unfiltered ("New threads %s allowed to run.\n", | |
2890 | inf->default_thread_run_sc == 0 ? "are" : "aren't"); | |
2891 | } | |
2892 | ||
2893 | static void | |
5fed81ff | 2894 | set_thread_default_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
2895 | { |
2896 | cur_inf ()->default_thread_detach_sc = | |
2897 | parse_int_arg (args, "set thread default detach-suspend-count"); | |
2898 | } | |
2899 | ||
2900 | static void | |
5fed81ff | 2901 | show_thread_default_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
2902 | { |
2903 | check_empty (args, "show thread default detach-suspend-count"); | |
2904 | printf_unfiltered ("New threads will get a detach-suspend-count of %d.\n", | |
2905 | cur_inf ()->default_thread_detach_sc); | |
2906 | } | |
942fd805 | 2907 | |
c906108c SS |
2908 | \f |
2909 | /* Steal a send right called NAME in the inferior task, and make it PROC's | |
2910 | saved exception port. */ | |
14a8ad62 ST |
2911 | void |
2912 | gnu_nat_target::steal_exc_port (struct proc *proc, mach_port_t name) | |
c906108c | 2913 | { |
0947023d | 2914 | kern_return_t err; |
c906108c SS |
2915 | mach_port_t port; |
2916 | mach_msg_type_name_t port_type; | |
2917 | ||
2918 | if (!proc || !proc->inf->task) | |
8a3fe4f8 | 2919 | error (_("No inferior task.")); |
c906108c SS |
2920 | |
2921 | err = mach_port_extract_right (proc->inf->task->port, | |
2922 | name, MACH_MSG_TYPE_COPY_SEND, | |
2923 | &port, &port_type); | |
2924 | if (err) | |
a9a758e3 | 2925 | error (_("Couldn't extract send right %lu from inferior: %s"), |
dc672865 | 2926 | name, safe_strerror (err)); |
c906108c SS |
2927 | |
2928 | if (proc->saved_exc_port) | |
2929 | /* Get rid of our reference to the old one. */ | |
2930 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
2931 | ||
2932 | proc->saved_exc_port = port; | |
2933 | ||
c5aa993b | 2934 | if (!proc->exc_port) |
0963b4bd MS |
2935 | /* If PROC is a thread, we may not have set its exception port |
2936 | before. We can't use proc_steal_exc_port because it also sets | |
2937 | saved_exc_port. */ | |
c906108c | 2938 | { |
c5aa993b JM |
2939 | proc->exc_port = proc->inf->event_port; |
2940 | err = proc_set_exception_port (proc, proc->exc_port); | |
8a3fe4f8 | 2941 | error (_("Can't set exception port for %s: %s"), |
dc672865 | 2942 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
2943 | } |
2944 | } | |
942fd805 | 2945 | |
c906108c | 2946 | static void |
5fed81ff | 2947 | set_task_exc_port_cmd (const char *args, int from_tty) |
c906108c SS |
2948 | { |
2949 | struct inf *inf = cur_inf (); | |
d8734c88 | 2950 | |
c906108c | 2951 | if (!args) |
8a3fe4f8 | 2952 | error (_("No argument to \"set task exception-port\" command.")); |
14a8ad62 | 2953 | gnu_target->steal_exc_port (inf->task, parse_and_eval_address (args)); |
c906108c SS |
2954 | } |
2955 | ||
c5aa993b | 2956 | static void |
5fed81ff | 2957 | set_stopped_cmd (const char *args, int from_tty) |
c906108c SS |
2958 | { |
2959 | cur_inf ()->stopped = _parse_bool_arg (args, "yes", "no", "set stopped"); | |
2960 | } | |
2961 | ||
2962 | static void | |
5fed81ff | 2963 | show_stopped_cmd (const char *args, int from_tty) |
c906108c SS |
2964 | { |
2965 | struct inf *inf = active_inf (); | |
d8734c88 | 2966 | |
c906108c SS |
2967 | check_empty (args, "show stopped"); |
2968 | printf_unfiltered ("The inferior process %s stopped.\n", | |
2969 | inf->stopped ? "is" : "isn't"); | |
2970 | } | |
2971 | ||
c5aa993b | 2972 | static void |
5fed81ff | 2973 | set_sig_thread_cmd (const char *args, int from_tty) |
c906108c | 2974 | { |
c906108c SS |
2975 | struct inf *inf = cur_inf (); |
2976 | ||
c5aa993b | 2977 | if (!args || (!isdigit (*args) && strcmp (args, "none") != 0)) |
8a3fe4f8 | 2978 | error (_("Illegal argument to \"set signal-thread\" command.\n" |
c3187fa5 | 2979 | "Should be a thread ID, or \"none\".")); |
c906108c SS |
2980 | |
2981 | if (strcmp (args, "none") == 0) | |
2982 | inf->signal_thread = 0; | |
2983 | else | |
2984 | { | |
c3187fa5 | 2985 | struct thread_info *tp = parse_thread_id (args, NULL); |
e38504b3 | 2986 | inf->signal_thread = inf_tid_to_thread (inf, tp->ptid.lwp ()); |
c906108c SS |
2987 | } |
2988 | } | |
2989 | ||
2990 | static void | |
5fed81ff | 2991 | show_sig_thread_cmd (const char *args, int from_tty) |
c906108c SS |
2992 | { |
2993 | struct inf *inf = active_inf (); | |
d8734c88 | 2994 | |
c906108c SS |
2995 | check_empty (args, "show signal-thread"); |
2996 | if (inf->signal_thread) | |
2997 | printf_unfiltered ("The signal thread is %s.\n", | |
2998 | proc_string (inf->signal_thread)); | |
2999 | else | |
3000 | printf_unfiltered ("There is no signal thread.\n"); | |
3001 | } | |
942fd805 | 3002 | |
c906108c | 3003 | \f |
c5aa993b | 3004 | static void |
785102a7 | 3005 | set_signals_cmd (int arg, int from_tty) |
c906108c | 3006 | { |
c906108c SS |
3007 | struct inf *inf = cur_inf (); |
3008 | ||
785102a7 | 3009 | inf->want_signals = arg; |
c906108c SS |
3010 | |
3011 | if (inf->task && inf->want_signals != inf->traced) | |
3012 | /* Make this take effect immediately in a running process. */ | |
14a8ad62 | 3013 | gnu_target->inf_set_traced (inf, inf->want_signals); |
c906108c SS |
3014 | } |
3015 | ||
785102a7 | 3016 | static void |
5fed81ff | 3017 | set_signals_cmd (const char *args, int from_tty) |
785102a7 TS |
3018 | { |
3019 | set_signals_cmd(parse_bool_arg (args, "set signals"), from_tty); | |
3020 | } | |
3021 | ||
c906108c | 3022 | static void |
5fed81ff | 3023 | show_signals_cmd (const char *args, int from_tty) |
c906108c SS |
3024 | { |
3025 | struct inf *inf = cur_inf (); | |
d8734c88 | 3026 | |
c906108c SS |
3027 | check_empty (args, "show signals"); |
3028 | printf_unfiltered ("The inferior process's signals %s intercepted.\n", | |
3029 | inf->task | |
3030 | ? (inf->traced ? "are" : "aren't") | |
3031 | : (inf->want_signals ? "will be" : "won't be")); | |
3032 | } | |
3033 | ||
c5aa993b | 3034 | static void |
785102a7 | 3035 | set_exceptions_cmd (int arg, int from_tty) |
c906108c SS |
3036 | { |
3037 | struct inf *inf = cur_inf (); | |
c906108c | 3038 | |
c26e9cbb YQ |
3039 | /* Make this take effect immediately in a running process. */ |
3040 | /* XXX */ ; | |
c906108c | 3041 | |
785102a7 TS |
3042 | inf->want_exceptions = arg; |
3043 | } | |
3044 | ||
3045 | static void | |
5fed81ff | 3046 | set_exceptions_cmd (const char *args, int from_tty) |
785102a7 TS |
3047 | { |
3048 | set_exceptions_cmd (parse_bool_arg (args, "set exceptions"), from_tty); | |
c906108c SS |
3049 | } |
3050 | ||
3051 | static void | |
5fed81ff | 3052 | show_exceptions_cmd (const char *args, int from_tty) |
c906108c SS |
3053 | { |
3054 | struct inf *inf = cur_inf (); | |
d8734c88 | 3055 | |
c906108c SS |
3056 | check_empty (args, "show exceptions"); |
3057 | printf_unfiltered ("Exceptions in the inferior %s trapped.\n", | |
3058 | inf->task | |
3059 | ? (inf->want_exceptions ? "are" : "aren't") | |
3060 | : (inf->want_exceptions ? "will be" : "won't be")); | |
3061 | } | |
942fd805 | 3062 | |
c906108c SS |
3063 | \f |
3064 | static void | |
981a3fb3 | 3065 | set_task_cmd (const char *args, int from_tty) |
c906108c | 3066 | { |
942fd805 MK |
3067 | printf_unfiltered ("\"set task\" must be followed by the name" |
3068 | " of a task property.\n"); | |
c906108c SS |
3069 | } |
3070 | ||
3071 | static void | |
981a3fb3 | 3072 | show_task_cmd (const char *args, int from_tty) |
c906108c SS |
3073 | { |
3074 | struct inf *inf = cur_inf (); | |
3075 | ||
3076 | check_empty (args, "show task"); | |
3077 | ||
3078 | show_signals_cmd (0, from_tty); | |
3079 | show_exceptions_cmd (0, from_tty); | |
3080 | show_task_pause_cmd (0, from_tty); | |
3081 | ||
3082 | if (inf->pause_sc == 0) | |
3083 | show_thread_default_pause_cmd (0, from_tty); | |
3084 | show_thread_default_run_cmd (0, from_tty); | |
3085 | ||
3086 | if (inf->task) | |
3087 | { | |
3088 | show_stopped_cmd (0, from_tty); | |
3089 | show_sig_thread_cmd (0, from_tty); | |
3090 | } | |
3091 | ||
3092 | if (inf->detach_sc != 0) | |
3093 | show_task_detach_sc_cmd (0, from_tty); | |
3094 | if (inf->default_thread_detach_sc != 0) | |
3095 | show_thread_default_detach_sc_cmd (0, from_tty); | |
3096 | } | |
942fd805 | 3097 | |
c906108c SS |
3098 | \f |
3099 | static void | |
5fed81ff | 3100 | set_noninvasive_cmd (const char *args, int from_tty) |
c906108c SS |
3101 | { |
3102 | /* Invert the sense of the arg for each component. */ | |
785102a7 | 3103 | int inv_arg = parse_bool_arg (args, "set noninvasive") ? 0 : 1; |
c906108c | 3104 | |
785102a7 TS |
3105 | set_task_pause_cmd (inv_arg, from_tty); |
3106 | set_signals_cmd (inv_arg, from_tty); | |
3107 | set_exceptions_cmd (inv_arg, from_tty); | |
c906108c | 3108 | } |
942fd805 | 3109 | |
c906108c SS |
3110 | \f |
3111 | static void | |
0cc6f43d | 3112 | info_port_rights (const char *args, mach_port_type_t only) |
c906108c SS |
3113 | { |
3114 | struct inf *inf = active_inf (); | |
3d6d86c6 | 3115 | struct value *vmark = value_mark (); |
c906108c SS |
3116 | |
3117 | if (args) | |
3118 | /* Explicit list of port rights. */ | |
3119 | { | |
3120 | while (*args) | |
3121 | { | |
3d6d86c6 | 3122 | struct value *val = parse_to_comma_and_eval (&args); |
c906108c SS |
3123 | long right = value_as_long (val); |
3124 | error_t err = | |
d8734c88 MS |
3125 | print_port_info (right, 0, inf->task->port, PORTINFO_DETAILS, |
3126 | stdout); | |
3127 | ||
c906108c | 3128 | if (err) |
8a3fe4f8 | 3129 | error (_("%ld: %s."), right, safe_strerror (err)); |
c906108c SS |
3130 | } |
3131 | } | |
3132 | else | |
3133 | /* Print all of them. */ | |
3134 | { | |
3135 | error_t err = | |
d8734c88 MS |
3136 | print_task_ports_info (inf->task->port, only, PORTINFO_DETAILS, |
3137 | stdout); | |
c906108c | 3138 | if (err) |
8a3fe4f8 | 3139 | error (_("%s."), safe_strerror (err)); |
c906108c SS |
3140 | } |
3141 | ||
3142 | value_free_to_mark (vmark); | |
3143 | } | |
3144 | ||
3145 | static void | |
1d12d88f | 3146 | info_send_rights_cmd (const char *args, int from_tty) |
c906108c SS |
3147 | { |
3148 | info_port_rights (args, MACH_PORT_TYPE_SEND); | |
3149 | } | |
942fd805 | 3150 | |
c906108c | 3151 | static void |
1d12d88f | 3152 | info_recv_rights_cmd (const char *args, int from_tty) |
c906108c SS |
3153 | { |
3154 | info_port_rights (args, MACH_PORT_TYPE_RECEIVE); | |
3155 | } | |
942fd805 | 3156 | |
c906108c | 3157 | static void |
1d12d88f | 3158 | info_port_sets_cmd (const char *args, int from_tty) |
c906108c SS |
3159 | { |
3160 | info_port_rights (args, MACH_PORT_TYPE_PORT_SET); | |
3161 | } | |
942fd805 | 3162 | |
c906108c | 3163 | static void |
1d12d88f | 3164 | info_dead_names_cmd (const char *args, int from_tty) |
c906108c SS |
3165 | { |
3166 | info_port_rights (args, MACH_PORT_TYPE_DEAD_NAME); | |
3167 | } | |
942fd805 | 3168 | |
c906108c | 3169 | static void |
1d12d88f | 3170 | info_port_rights_cmd (const char *args, int from_tty) |
c906108c SS |
3171 | { |
3172 | info_port_rights (args, ~0); | |
3173 | } | |
942fd805 | 3174 | |
c906108c | 3175 | \f |
c5aa993b | 3176 | static void |
942fd805 | 3177 | add_task_commands (void) |
c906108c | 3178 | { |
1a966eab AC |
3179 | add_cmd ("pause", class_run, set_thread_default_pause_cmd, _("\ |
3180 | Set whether the new threads are suspended while gdb has control.\n\ | |
942fd805 MK |
3181 | This property normally has no effect because the whole task is\n\ |
3182 | suspended, however, that may be disabled with \"set task pause off\".\n\ | |
1a966eab | 3183 | The default value is \"off\"."), |
c906108c | 3184 | &set_thread_default_cmd_list); |
1a966eab AC |
3185 | add_cmd ("pause", no_class, show_thread_default_pause_cmd, _("\ |
3186 | Show whether new threads are suspended while gdb has control."), | |
c906108c | 3187 | &show_thread_default_cmd_list); |
942fd805 | 3188 | |
1a966eab AC |
3189 | add_cmd ("run", class_run, set_thread_default_run_cmd, _("\ |
3190 | Set whether new threads are allowed to run (once gdb has noticed them)."), | |
c906108c | 3191 | &set_thread_default_cmd_list); |
1a966eab AC |
3192 | add_cmd ("run", no_class, show_thread_default_run_cmd, _("\ |
3193 | Show whether new threads are allowed to run (once gdb has noticed them)."), | |
c906108c | 3194 | &show_thread_default_cmd_list); |
942fd805 | 3195 | |
c906108c | 3196 | add_cmd ("detach-suspend-count", class_run, set_thread_default_detach_sc_cmd, |
1a966eab | 3197 | _("Set the default detach-suspend-count value for new threads."), |
c906108c SS |
3198 | &set_thread_default_cmd_list); |
3199 | add_cmd ("detach-suspend-count", no_class, show_thread_default_detach_sc_cmd, | |
1a966eab | 3200 | _("Show the default detach-suspend-count value for new threads."), |
c906108c SS |
3201 | &show_thread_default_cmd_list); |
3202 | ||
1a966eab AC |
3203 | add_cmd ("signals", class_run, set_signals_cmd, _("\ |
3204 | Set whether the inferior process's signals will be intercepted.\n\ | |
3205 | Mach exceptions (such as breakpoint traps) are not affected."), | |
c906108c SS |
3206 | &setlist); |
3207 | add_alias_cmd ("sigs", "signals", class_run, 1, &setlist); | |
1a966eab AC |
3208 | add_cmd ("signals", no_class, show_signals_cmd, _("\ |
3209 | Show whether the inferior process's signals will be intercepted."), | |
c906108c SS |
3210 | &showlist); |
3211 | add_alias_cmd ("sigs", "signals", no_class, 1, &showlist); | |
3212 | ||
1a966eab AC |
3213 | add_cmd ("signal-thread", class_run, set_sig_thread_cmd, _("\ |
3214 | Set the thread that gdb thinks is the libc signal thread.\n\ | |
3215 | This thread is run when delivering a signal to a non-stopped process."), | |
c906108c SS |
3216 | &setlist); |
3217 | add_alias_cmd ("sigthread", "signal-thread", class_run, 1, &setlist); | |
1a966eab AC |
3218 | add_cmd ("signal-thread", no_class, show_sig_thread_cmd, _("\ |
3219 | Set the thread that gdb thinks is the libc signal thread."), | |
c906108c SS |
3220 | &showlist); |
3221 | add_alias_cmd ("sigthread", "signal-thread", no_class, 1, &showlist); | |
3222 | ||
1a966eab AC |
3223 | add_cmd ("stopped", class_run, set_stopped_cmd, _("\ |
3224 | Set whether gdb thinks the inferior process is stopped as with SIGSTOP.\n\ | |
3225 | Stopped process will be continued by sending them a signal."), | |
c906108c | 3226 | &setlist); |
fe79276f | 3227 | add_cmd ("stopped", no_class, show_stopped_cmd, _("\ |
1a966eab | 3228 | Show whether gdb thinks the inferior process is stopped as with SIGSTOP."), |
c906108c SS |
3229 | &showlist); |
3230 | ||
1a966eab AC |
3231 | add_cmd ("exceptions", class_run, set_exceptions_cmd, _("\ |
3232 | Set whether exceptions in the inferior process will be trapped.\n\ | |
942fd805 | 3233 | When exceptions are turned off, neither breakpoints nor single-stepping\n\ |
1a966eab | 3234 | will work."), |
c906108c SS |
3235 | &setlist); |
3236 | /* Allow `set exc' despite conflict with `set exception-port'. */ | |
3237 | add_alias_cmd ("exc", "exceptions", class_run, 1, &setlist); | |
1a966eab AC |
3238 | add_cmd ("exceptions", no_class, show_exceptions_cmd, _("\ |
3239 | Show whether exceptions in the inferior process will be trapped."), | |
c906108c SS |
3240 | &showlist); |
3241 | ||
3242 | add_prefix_cmd ("task", no_class, set_task_cmd, | |
1bedd215 | 3243 | _("Command prefix for setting task attributes."), |
c906108c SS |
3244 | &set_task_cmd_list, "set task ", 0, &setlist); |
3245 | add_prefix_cmd ("task", no_class, show_task_cmd, | |
1bedd215 | 3246 | _("Command prefix for showing task attributes."), |
c906108c SS |
3247 | &show_task_cmd_list, "show task ", 0, &showlist); |
3248 | ||
1a966eab AC |
3249 | add_cmd ("pause", class_run, set_task_pause_cmd, _("\ |
3250 | Set whether the task is suspended while gdb has control.\n\ | |
942fd805 MK |
3251 | A value of \"on\" takes effect immediately, otherwise nothing happens\n\ |
3252 | until the next time the program is continued.\n\ | |
3253 | When setting this to \"off\", \"set thread default pause on\" can be\n\ | |
1a966eab | 3254 | used to pause individual threads by default instead."), |
c906108c SS |
3255 | &set_task_cmd_list); |
3256 | add_cmd ("pause", no_class, show_task_pause_cmd, | |
1a966eab | 3257 | _("Show whether the task is suspended while gdb has control."), |
c906108c | 3258 | &show_task_cmd_list); |
942fd805 | 3259 | |
c906108c | 3260 | add_cmd ("detach-suspend-count", class_run, set_task_detach_sc_cmd, |
1a966eab | 3261 | _("Set the suspend count will leave on the thread when detaching."), |
c906108c SS |
3262 | &set_task_cmd_list); |
3263 | add_cmd ("detach-suspend-count", no_class, show_task_detach_sc_cmd, | |
0963b4bd MS |
3264 | _("Show the suspend count will leave " |
3265 | "on the thread when detaching."), | |
c906108c SS |
3266 | &show_task_cmd_list); |
3267 | ||
1a966eab AC |
3268 | add_cmd ("exception-port", no_class, set_task_exc_port_cmd, _("\ |
3269 | Set the task exception port to which we forward exceptions.\n\ | |
3270 | The argument should be the value of the send right in the task."), | |
c906108c SS |
3271 | &set_task_cmd_list); |
3272 | add_alias_cmd ("excp", "exception-port", no_class, 1, &set_task_cmd_list); | |
942fd805 MK |
3273 | add_alias_cmd ("exc-port", "exception-port", no_class, 1, |
3274 | &set_task_cmd_list); | |
c906108c SS |
3275 | |
3276 | /* A convenient way of turning on all options require to noninvasively | |
3277 | debug running tasks. */ | |
1a966eab AC |
3278 | add_cmd ("noninvasive", no_class, set_noninvasive_cmd, _("\ |
3279 | Set task options so that we interfere as little as possible.\n\ | |
942fd805 | 3280 | This is the same as setting `task pause', `exceptions', and\n\ |
1a966eab | 3281 | `signals' to the opposite value."), |
c906108c SS |
3282 | &setlist); |
3283 | ||
3284 | /* Commands to show information about the task's ports. */ | |
5f515954 | 3285 | add_info ("send-rights", info_send_rights_cmd, |
590042fc | 3286 | _("Show information about the task's send rights.")); |
5f515954 | 3287 | add_info ("receive-rights", info_recv_rights_cmd, |
590042fc | 3288 | _("Show information about the task's receive rights.")); |
5f515954 | 3289 | add_info ("port-rights", info_port_rights_cmd, |
590042fc | 3290 | _("Show information about the task's port rights.")); |
5f515954 | 3291 | add_info ("port-sets", info_port_sets_cmd, |
590042fc | 3292 | _("Show information about the task's port sets.")); |
5f515954 | 3293 | add_info ("dead-names", info_dead_names_cmd, |
590042fc | 3294 | _("Show information about the task's dead names.")); |
c906108c SS |
3295 | add_info_alias ("ports", "port-rights", 1); |
3296 | add_info_alias ("port", "port-rights", 1); | |
3297 | add_info_alias ("psets", "port-sets", 1); | |
3298 | } | |
c906108c | 3299 | |
942fd805 | 3300 | \f |
c906108c | 3301 | static void |
5fed81ff | 3302 | set_thread_pause_cmd (const char *args, int from_tty) |
c906108c SS |
3303 | { |
3304 | struct proc *thread = cur_thread (); | |
3305 | int old_sc = thread->pause_sc; | |
d8734c88 | 3306 | |
c906108c SS |
3307 | thread->pause_sc = parse_bool_arg (args, "set thread pause"); |
3308 | if (old_sc == 0 && thread->pause_sc != 0 && thread->inf->pause_sc == 0) | |
3309 | /* If the task is currently unsuspended, immediately suspend it, | |
3310 | otherwise wait until the next time it gets control. */ | |
14a8ad62 | 3311 | gnu_target->inf_suspend (thread->inf); |
c906108c SS |
3312 | } |
3313 | ||
3314 | static void | |
5fed81ff | 3315 | show_thread_pause_cmd (const char *args, int from_tty) |
c906108c SS |
3316 | { |
3317 | struct proc *thread = cur_thread (); | |
3318 | int sc = thread->pause_sc; | |
d8734c88 | 3319 | |
c906108c SS |
3320 | check_empty (args, "show task pause"); |
3321 | printf_unfiltered ("Thread %s %s suspended while gdb has control%s.\n", | |
3322 | proc_string (thread), | |
3323 | sc ? "is" : "isn't", | |
942fd805 | 3324 | !sc && thread->inf->pause_sc ? " (but the task is)" : ""); |
c906108c SS |
3325 | } |
3326 | ||
3327 | static void | |
5fed81ff | 3328 | set_thread_run_cmd (const char *args, int from_tty) |
c906108c SS |
3329 | { |
3330 | struct proc *thread = cur_thread (); | |
d8734c88 | 3331 | |
c906108c SS |
3332 | thread->run_sc = parse_bool_arg (args, "set thread run") ? 0 : 1; |
3333 | } | |
3334 | ||
3335 | static void | |
5fed81ff | 3336 | show_thread_run_cmd (const char *args, int from_tty) |
c906108c SS |
3337 | { |
3338 | struct proc *thread = cur_thread (); | |
d8734c88 | 3339 | |
c906108c SS |
3340 | check_empty (args, "show thread run"); |
3341 | printf_unfiltered ("Thread %s %s allowed to run.", | |
3342 | proc_string (thread), | |
3343 | thread->run_sc == 0 ? "is" : "isn't"); | |
3344 | } | |
3345 | ||
3346 | static void | |
5fed81ff | 3347 | set_thread_detach_sc_cmd (const char *args, int from_tty) |
c906108c | 3348 | { |
942fd805 MK |
3349 | cur_thread ()->detach_sc = parse_int_arg (args, |
3350 | "set thread detach-suspend-count"); | |
c906108c SS |
3351 | } |
3352 | ||
3353 | static void | |
5fed81ff | 3354 | show_thread_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
3355 | { |
3356 | struct proc *thread = cur_thread (); | |
d8734c88 | 3357 | |
c906108c | 3358 | check_empty (args, "show thread detach-suspend-count"); |
942fd805 MK |
3359 | printf_unfiltered ("Thread %s will be left with a suspend count" |
3360 | " of %d when detaching.\n", | |
c906108c SS |
3361 | proc_string (thread), |
3362 | thread->detach_sc); | |
3363 | } | |
3364 | ||
3365 | static void | |
5fed81ff | 3366 | set_thread_exc_port_cmd (const char *args, int from_tty) |
c906108c SS |
3367 | { |
3368 | struct proc *thread = cur_thread (); | |
d8734c88 | 3369 | |
c906108c | 3370 | if (!args) |
8a3fe4f8 | 3371 | error (_("No argument to \"set thread exception-port\" command.")); |
14a8ad62 | 3372 | gnu_target->steal_exc_port (thread, parse_and_eval_address (args)); |
c906108c SS |
3373 | } |
3374 | ||
3375 | #if 0 | |
3376 | static void | |
3377 | show_thread_cmd (char *args, int from_tty) | |
3378 | { | |
3379 | struct proc *thread = cur_thread (); | |
d8734c88 | 3380 | |
c906108c SS |
3381 | check_empty (args, "show thread"); |
3382 | show_thread_run_cmd (0, from_tty); | |
3383 | show_thread_pause_cmd (0, from_tty); | |
3384 | if (thread->detach_sc != 0) | |
3385 | show_thread_detach_sc_cmd (0, from_tty); | |
3386 | } | |
3387 | #endif | |
3388 | ||
3389 | static void | |
5fed81ff | 3390 | thread_takeover_sc_cmd (const char *args, int from_tty) |
c906108c SS |
3391 | { |
3392 | struct proc *thread = cur_thread (); | |
d8734c88 | 3393 | |
c906108c SS |
3394 | thread_basic_info_data_t _info; |
3395 | thread_basic_info_t info = &_info; | |
3396 | mach_msg_type_number_t info_len = THREAD_BASIC_INFO_COUNT; | |
cabb5f06 TS |
3397 | kern_return_t err |
3398 | = mach_thread_info (thread->port, THREAD_BASIC_INFO, | |
3399 | (int *) &info, &info_len); | |
c906108c | 3400 | if (err) |
8a3fe4f8 | 3401 | error (("%s."), safe_strerror (err)); |
c906108c SS |
3402 | thread->sc = info->suspend_count; |
3403 | if (from_tty) | |
3404 | printf_unfiltered ("Suspend count was %d.\n", thread->sc); | |
3405 | if (info != &_info) | |
942fd805 MK |
3406 | vm_deallocate (mach_task_self (), (vm_address_t) info, |
3407 | info_len * sizeof (int)); | |
c906108c SS |
3408 | } |
3409 | ||
942fd805 MK |
3410 | \f |
3411 | static void | |
3412 | add_thread_commands (void) | |
c906108c SS |
3413 | { |
3414 | add_prefix_cmd ("thread", no_class, set_thread_cmd, | |
1bedd215 | 3415 | _("Command prefix for setting thread properties."), |
c906108c SS |
3416 | &set_thread_cmd_list, "set thread ", 0, &setlist); |
3417 | add_prefix_cmd ("default", no_class, show_thread_cmd, | |
1bedd215 | 3418 | _("Command prefix for setting default thread properties."), |
c906108c SS |
3419 | &set_thread_default_cmd_list, "set thread default ", 0, |
3420 | &set_thread_cmd_list); | |
3421 | add_prefix_cmd ("thread", no_class, set_thread_default_cmd, | |
1bedd215 | 3422 | _("Command prefix for showing thread properties."), |
c906108c SS |
3423 | &show_thread_cmd_list, "show thread ", 0, &showlist); |
3424 | add_prefix_cmd ("default", no_class, show_thread_default_cmd, | |
1bedd215 | 3425 | _("Command prefix for showing default thread properties."), |
c906108c SS |
3426 | &show_thread_default_cmd_list, "show thread default ", 0, |
3427 | &show_thread_cmd_list); | |
3428 | ||
1a966eab AC |
3429 | add_cmd ("pause", class_run, set_thread_pause_cmd, _("\ |
3430 | Set whether the current thread is suspended while gdb has control.\n\ | |
942fd805 MK |
3431 | A value of \"on\" takes effect immediately, otherwise nothing happens\n\ |
3432 | until the next time the program is continued. This property normally\n\ | |
3433 | has no effect because the whole task is suspended, however, that may\n\ | |
3434 | be disabled with \"set task pause off\".\n\ | |
1a966eab | 3435 | The default value is \"off\"."), |
c906108c | 3436 | &set_thread_cmd_list); |
1a966eab AC |
3437 | add_cmd ("pause", no_class, show_thread_pause_cmd, _("\ |
3438 | Show whether the current thread is suspended while gdb has control."), | |
c906108c SS |
3439 | &show_thread_cmd_list); |
3440 | ||
3441 | add_cmd ("run", class_run, set_thread_run_cmd, | |
1a966eab | 3442 | _("Set whether the current thread is allowed to run."), |
c906108c SS |
3443 | &set_thread_cmd_list); |
3444 | add_cmd ("run", no_class, show_thread_run_cmd, | |
1a966eab | 3445 | _("Show whether the current thread is allowed to run."), |
c906108c SS |
3446 | &show_thread_cmd_list); |
3447 | ||
1a966eab AC |
3448 | add_cmd ("detach-suspend-count", class_run, set_thread_detach_sc_cmd, _("\ |
3449 | Set the suspend count will leave on the thread when detaching.\n\ | |
942fd805 | 3450 | Note that this is relative to suspend count when gdb noticed the thread;\n\ |
1a966eab | 3451 | use the `thread takeover-suspend-count' to force it to an absolute value."), |
c906108c | 3452 | &set_thread_cmd_list); |
1a966eab AC |
3453 | add_cmd ("detach-suspend-count", no_class, show_thread_detach_sc_cmd, _("\ |
3454 | Show the suspend count will leave on the thread when detaching.\n\ | |
942fd805 | 3455 | Note that this is relative to suspend count when gdb noticed the thread;\n\ |
1a966eab | 3456 | use the `thread takeover-suspend-count' to force it to an absolute value."), |
c906108c SS |
3457 | &show_thread_cmd_list); |
3458 | ||
1a966eab AC |
3459 | add_cmd ("exception-port", no_class, set_thread_exc_port_cmd, _("\ |
3460 | Set the thread exception port to which we forward exceptions.\n\ | |
942fd805 | 3461 | This overrides the task exception port.\n\ |
1a966eab | 3462 | The argument should be the value of the send right in the task."), |
c906108c SS |
3463 | &set_thread_cmd_list); |
3464 | add_alias_cmd ("excp", "exception-port", no_class, 1, &set_thread_cmd_list); | |
942fd805 MK |
3465 | add_alias_cmd ("exc-port", "exception-port", no_class, 1, |
3466 | &set_thread_cmd_list); | |
c906108c | 3467 | |
1a966eab AC |
3468 | add_cmd ("takeover-suspend-count", no_class, thread_takeover_sc_cmd, _("\ |
3469 | Force the threads absolute suspend-count to be gdb's.\n\ | |
942fd805 | 3470 | Prior to giving this command, gdb's thread suspend-counts are relative\n\ |
1a966eab | 3471 | to the thread's initial suspend-count when gdb notices the threads."), |
c906108c SS |
3472 | &thread_cmd_list); |
3473 | } | |
942fd805 | 3474 | |
6c265988 | 3475 | void _initialize_gnu_nat (); |
c906108c | 3476 | void |
6c265988 | 3477 | _initialize_gnu_nat () |
c906108c SS |
3478 | { |
3479 | proc_server = getproc (); | |
942fd805 | 3480 | |
c906108c SS |
3481 | add_task_commands (); |
3482 | add_thread_commands (); | |
cbe54154 PA |
3483 | add_setshow_boolean_cmd ("gnu-nat", class_maintenance, |
3484 | &gnu_debug_flag, | |
3485 | _("Set debugging output for the gnu backend."), | |
3486 | _("Show debugging output for the gnu backend."), | |
3487 | NULL, | |
3488 | NULL, | |
3489 | NULL, | |
3490 | &setdebuglist, | |
3491 | &showdebuglist); | |
c906108c SS |
3492 | } |
3493 | \f | |
3494 | #ifdef FLUSH_INFERIOR_CACHE | |
3495 | ||
3496 | /* When over-writing code on some machines the I-Cache must be flushed | |
3497 | explicitly, because it is not kept coherent by the lazy hardware. | |
3498 | This definitely includes breakpoints, for instance, or else we | |
0963b4bd | 3499 | end up looping in mysterious Bpt traps. */ |
c906108c SS |
3500 | |
3501 | void | |
fba45db2 | 3502 | flush_inferior_icache (CORE_ADDR pc, int amount) |
c906108c SS |
3503 | { |
3504 | vm_machine_attribute_val_t flush = MATTR_VAL_ICACHE_FLUSH; | |
0947023d | 3505 | kern_return_t ret; |
c5aa993b | 3506 | |
c289427b | 3507 | ret = vm_machine_attribute (gnu_current_inf->task->port, |
c906108c SS |
3508 | pc, |
3509 | amount, | |
3510 | MATTR_CACHE, | |
3511 | &flush); | |
3512 | if (ret != KERN_SUCCESS) | |
8a3fe4f8 | 3513 | warning (_("Error flushing inferior's cache : %s"), safe_strerror (ret)); |
c906108c | 3514 | } |
c5aa993b | 3515 | #endif /* FLUSH_INFERIOR_CACHE */ |