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da59e081 | 1 | /* Interface GDB to the GNU Hurd. |
42a4f53d | 2 | Copyright (C) 1992-2019 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" | |
0747795c | 66 | #include "common/gdb_wait.h" |
c906108c SS |
67 | #include "gdbcmd.h" |
68 | #include "gdbcore.h" | |
942fd805 | 69 | #include "gdbthread.h" |
3b3e6bee | 70 | #include "gdb_obstack.h" |
c3187fa5 | 71 | #include "tid-parse.h" |
c906108c | 72 | |
b4d1e8c7 | 73 | #include "inf-child.h" |
c906108c | 74 | |
21389b7f TS |
75 | /* MIG stubs are not yet ready for C++ compilation. */ |
76 | extern "C" | |
77 | { | |
c906108c SS |
78 | #include "exc_request_S.h" |
79 | #include "notify_S.h" | |
80 | #include "process_reply_S.h" | |
81 | #include "msg_reply_S.h" | |
82 | #include "exc_request_U.h" | |
83 | #include "msg_U.h" | |
21389b7f | 84 | } |
c906108c SS |
85 | |
86 | static process_t proc_server = MACH_PORT_NULL; | |
87 | ||
88 | /* If we've sent a proc_wait_request to the proc server, the pid of the | |
89 | process we asked about. We can only ever have one outstanding. */ | |
90 | int proc_wait_pid = 0; | |
91 | ||
92 | /* The number of wait requests we've sent, and expect replies from. */ | |
93 | int proc_waits_pending = 0; | |
94 | ||
95 | int gnu_debug_flag = 0; | |
96 | ||
97 | /* Forward decls */ | |
98 | ||
f04a82ef | 99 | static struct inf *make_inf (); |
c906108c SS |
100 | void inf_clear_wait (struct inf *inf); |
101 | void inf_cleanup (struct inf *inf); | |
102 | void inf_startup (struct inf *inf, int pid); | |
103 | int inf_update_suspends (struct inf *inf); | |
104 | void inf_set_pid (struct inf *inf, pid_t pid); | |
105 | void inf_validate_procs (struct inf *inf); | |
106 | void inf_steal_exc_ports (struct inf *inf); | |
107 | void inf_restore_exc_ports (struct inf *inf); | |
39efb398 AC |
108 | void inf_set_threads_resume_sc (struct inf *inf, |
109 | struct proc *run_thread, | |
110 | int run_others); | |
111 | int inf_set_threads_resume_sc_for_signal_thread (struct inf *inf); | |
112 | void inf_suspend (struct inf *inf); | |
113 | void inf_resume (struct inf *inf); | |
c906108c SS |
114 | void inf_set_step_thread (struct inf *inf, struct proc *proc); |
115 | void inf_detach (struct inf *inf); | |
116 | void inf_attach (struct inf *inf, int pid); | |
2ea28649 | 117 | void inf_signal (struct inf *inf, enum gdb_signal sig); |
cce74817 | 118 | void inf_continue (struct inf *inf); |
c906108c SS |
119 | |
120 | #define inf_debug(_inf, msg, args...) \ | |
121 | do { struct inf *__inf = (_inf); \ | |
a74ce742 PM |
122 | debug ("{inf %d %s}: " msg, __inf->pid, \ |
123 | host_address_to_string (__inf) , ##args); } while (0) | |
c906108c SS |
124 | |
125 | void proc_abort (struct proc *proc, int force); | |
c906108c SS |
126 | struct proc *make_proc (struct inf *inf, mach_port_t port, int tid); |
127 | struct proc *_proc_free (struct proc *proc); | |
128 | int proc_update_sc (struct proc *proc); | |
0947023d TS |
129 | kern_return_t proc_get_exception_port (struct proc *proc, mach_port_t * port); |
130 | kern_return_t proc_set_exception_port (struct proc *proc, mach_port_t port); | |
c906108c SS |
131 | static mach_port_t _proc_get_exc_port (struct proc *proc); |
132 | void proc_steal_exc_port (struct proc *proc, mach_port_t exc_port); | |
133 | void proc_restore_exc_port (struct proc *proc); | |
134 | int proc_trace (struct proc *proc, int set); | |
c906108c SS |
135 | |
136 | /* Evaluate RPC_EXPR in a scope with the variables MSGPORT and REFPORT bound | |
137 | to INF's msg port and task port respectively. If it has no msg port, | |
138 | EIEIO is returned. INF must refer to a running process! */ | |
139 | #define INF_MSGPORT_RPC(inf, rpc_expr) \ | |
140 | HURD_MSGPORT_RPC (proc_getmsgport (proc_server, inf->pid, &msgport), \ | |
141 | (refport = inf->task->port, 0), 0, \ | |
142 | msgport ? (rpc_expr) : EIEIO) | |
143 | ||
144 | /* Like INF_MSGPORT_RPC, but will also resume the signal thread to ensure | |
145 | there's someone around to deal with the RPC (and resuspend things | |
146 | afterwards). This effects INF's threads' resume_sc count. */ | |
147 | #define INF_RESUME_MSGPORT_RPC(inf, rpc_expr) \ | |
148 | (inf_set_threads_resume_sc_for_signal_thread (inf) \ | |
0947023d | 149 | ? ({ kern_return_t __e; \ |
c906108c SS |
150 | inf_resume (inf); \ |
151 | __e = INF_MSGPORT_RPC (inf, rpc_expr); \ | |
152 | inf_suspend (inf); \ | |
153 | __e; }) \ | |
154 | : EIEIO) | |
155 | ||
c906108c SS |
156 | \f |
157 | /* The state passed by an exception message. */ | |
158 | struct exc_state | |
c5aa993b | 159 | { |
0963b4bd | 160 | int exception; /* The exception code. */ |
c5aa993b | 161 | int code, subcode; |
0963b4bd MS |
162 | mach_port_t handler; /* The real exception port to handle this. */ |
163 | mach_port_t reply; /* The reply port from the exception call. */ | |
c5aa993b | 164 | }; |
c906108c | 165 | |
0963b4bd | 166 | /* The results of the last wait an inf did. */ |
c906108c | 167 | struct inf_wait |
c5aa993b JM |
168 | { |
169 | struct target_waitstatus status; /* The status returned to gdb. */ | |
0963b4bd | 170 | struct exc_state exc; /* The exception that caused us to return. */ |
c5aa993b JM |
171 | struct proc *thread; /* The thread in question. */ |
172 | int suppress; /* Something trivial happened. */ | |
173 | }; | |
c906108c SS |
174 | |
175 | /* The state of an inferior. */ | |
176 | struct inf | |
c5aa993b JM |
177 | { |
178 | /* Fields describing the current inferior. */ | |
c906108c | 179 | |
c5aa993b JM |
180 | struct proc *task; /* The mach task. */ |
181 | struct proc *threads; /* A linked list of all threads in TASK. */ | |
c906108c | 182 | |
0963b4bd MS |
183 | /* True if THREADS needn't be validated by querying the task. We |
184 | assume that we and the task in question are the only ones | |
185 | frobbing the thread list, so as long as we don't let any code | |
186 | run, we don't have to worry about THREADS changing. */ | |
c5aa993b | 187 | int threads_up_to_date; |
c906108c | 188 | |
0963b4bd | 189 | pid_t pid; /* The real system PID. */ |
c906108c | 190 | |
c5aa993b | 191 | struct inf_wait wait; /* What to return from target_wait. */ |
c906108c | 192 | |
0963b4bd MS |
193 | /* One thread proc in INF may be in `single-stepping mode'. This |
194 | is it. */ | |
c5aa993b | 195 | struct proc *step_thread; |
c906108c | 196 | |
c5aa993b JM |
197 | /* The thread we think is the signal thread. */ |
198 | struct proc *signal_thread; | |
c906108c | 199 | |
c5aa993b | 200 | mach_port_t event_port; /* Where we receive various msgs. */ |
c906108c | 201 | |
c5aa993b JM |
202 | /* True if we think at least one thread in the inferior could currently be |
203 | running. */ | |
204 | unsigned int running:1; | |
c906108c | 205 | |
c5aa993b JM |
206 | /* True if the process has stopped (in the proc server sense). Note that |
207 | since a proc server `stop' leaves the signal thread running, the inf can | |
208 | be RUNNING && STOPPED... */ | |
209 | unsigned int stopped:1; | |
cce74817 | 210 | |
c5aa993b JM |
211 | /* True if the inferior has no message port. */ |
212 | unsigned int nomsg:1; | |
c906108c | 213 | |
c5aa993b JM |
214 | /* True if the inferior is traced. */ |
215 | unsigned int traced:1; | |
c906108c | 216 | |
c5aa993b JM |
217 | /* True if we shouldn't try waiting for the inferior, usually because we |
218 | can't for some reason. */ | |
219 | unsigned int no_wait:1; | |
c906108c | 220 | |
c5aa993b | 221 | /* When starting a new inferior, we don't try to validate threads until all |
c82f56d9 | 222 | the proper execs have been done, which this flag states we still |
c5aa993b | 223 | expect to happen. */ |
c82f56d9 | 224 | unsigned int pending_execs:1; |
c906108c | 225 | |
0963b4bd | 226 | /* Fields describing global state. */ |
c906108c | 227 | |
c5aa993b JM |
228 | /* The task suspend count used when gdb has control. This is normally 1 to |
229 | make things easier for us, but sometimes (like when attaching to vital | |
230 | system servers) it may be desirable to let the task continue to run | |
231 | (pausing individual threads as necessary). */ | |
232 | int pause_sc; | |
c906108c | 233 | |
c5aa993b JM |
234 | /* The task suspend count left when detaching from a task. */ |
235 | int detach_sc; | |
c906108c | 236 | |
c5aa993b JM |
237 | /* The initial values used for the run_sc and pause_sc of newly discovered |
238 | threads -- see the definition of those fields in struct proc. */ | |
239 | int default_thread_run_sc; | |
240 | int default_thread_pause_sc; | |
241 | int default_thread_detach_sc; | |
c906108c | 242 | |
c5aa993b JM |
243 | /* True if the process should be traced when started/attached. Newly |
244 | started processes *must* be traced at first to exec them properly, but | |
245 | if this is false, tracing is turned off as soon it has done so. */ | |
246 | int want_signals; | |
c906108c | 247 | |
c5aa993b JM |
248 | /* True if exceptions from the inferior process should be trapped. This |
249 | must be on to use breakpoints. */ | |
250 | int want_exceptions; | |
251 | }; | |
c906108c SS |
252 | |
253 | ||
c5aa993b JM |
254 | int |
255 | __proc_pid (struct proc *proc) | |
c906108c SS |
256 | { |
257 | return proc->inf->pid; | |
258 | } | |
942fd805 | 259 | |
c906108c SS |
260 | \f |
261 | /* Update PROC's real suspend count to match it's desired one. Returns true | |
262 | if we think PROC is now in a runnable state. */ | |
263 | int | |
264 | proc_update_sc (struct proc *proc) | |
265 | { | |
266 | int running; | |
c5aa993b | 267 | int err = 0; |
c906108c SS |
268 | int delta = proc->sc - proc->cur_sc; |
269 | ||
270 | if (delta) | |
271 | proc_debug (proc, "sc: %d --> %d", proc->cur_sc, proc->sc); | |
272 | ||
273 | if (proc->sc == 0 && proc->state_changed) | |
0963b4bd | 274 | /* Since PROC may start running, we must write back any state changes. */ |
c906108c | 275 | { |
bf62e5b4 | 276 | gdb_assert (proc_is_thread (proc)); |
c906108c SS |
277 | proc_debug (proc, "storing back changed thread state"); |
278 | err = thread_set_state (proc->port, THREAD_STATE_FLAVOR, | |
f75c77fc | 279 | (thread_state_t) &proc->state, THREAD_STATE_SIZE); |
c5aa993b | 280 | if (!err) |
c906108c SS |
281 | proc->state_changed = 0; |
282 | } | |
283 | ||
284 | if (delta > 0) | |
942fd805 MK |
285 | { |
286 | while (delta-- > 0 && !err) | |
287 | { | |
288 | if (proc_is_task (proc)) | |
289 | err = task_suspend (proc->port); | |
290 | else | |
291 | err = thread_suspend (proc->port); | |
292 | } | |
293 | } | |
c906108c | 294 | else |
942fd805 MK |
295 | { |
296 | while (delta++ < 0 && !err) | |
297 | { | |
298 | if (proc_is_task (proc)) | |
299 | err = task_resume (proc->port); | |
300 | else | |
301 | err = thread_resume (proc->port); | |
302 | } | |
303 | } | |
c5aa993b | 304 | if (!err) |
c906108c SS |
305 | proc->cur_sc = proc->sc; |
306 | ||
307 | /* If we got an error, then the task/thread has disappeared. */ | |
308 | running = !err && proc->sc == 0; | |
309 | ||
310 | proc_debug (proc, "is %s", err ? "dead" : running ? "running" : "suspended"); | |
311 | if (err) | |
dc672865 | 312 | proc_debug (proc, "err = %s", safe_strerror (err)); |
c906108c SS |
313 | |
314 | if (running) | |
315 | { | |
316 | proc->aborted = 0; | |
317 | proc->state_valid = proc->state_changed = 0; | |
318 | proc->fetched_regs = 0; | |
319 | } | |
320 | ||
321 | return running; | |
322 | } | |
942fd805 | 323 | |
c906108c SS |
324 | \f |
325 | /* Thread_abort is called on PROC if needed. PROC must be a thread proc. | |
326 | If PROC is deemed `precious', then nothing is done unless FORCE is true. | |
327 | In particular, a thread is precious if it's running (in which case forcing | |
328 | it includes suspending it first), or if it has an exception pending. */ | |
329 | void | |
330 | proc_abort (struct proc *proc, int force) | |
331 | { | |
bf62e5b4 | 332 | gdb_assert (proc_is_thread (proc)); |
c906108c | 333 | |
c5aa993b | 334 | if (!proc->aborted) |
c906108c SS |
335 | { |
336 | struct inf *inf = proc->inf; | |
337 | int running = (proc->cur_sc == 0 && inf->task->cur_sc == 0); | |
338 | ||
339 | if (running && force) | |
340 | { | |
341 | proc->sc = 1; | |
342 | inf_update_suspends (proc->inf); | |
343 | running = 0; | |
8a3fe4f8 | 344 | warning (_("Stopped %s."), proc_string (proc)); |
c906108c SS |
345 | } |
346 | else if (proc == inf->wait.thread && inf->wait.exc.reply && !force) | |
347 | /* An exception is pending on PROC, which don't mess with. */ | |
348 | running = 1; | |
349 | ||
c5aa993b | 350 | if (!running) |
c906108c SS |
351 | /* We only abort the thread if it's not actually running. */ |
352 | { | |
353 | thread_abort (proc->port); | |
354 | proc_debug (proc, "aborted"); | |
355 | proc->aborted = 1; | |
356 | } | |
357 | else | |
358 | proc_debug (proc, "not aborting"); | |
359 | } | |
360 | } | |
361 | ||
362 | /* Make sure that the state field in PROC is up to date, and return a pointer | |
363 | to it, or 0 if something is wrong. If WILL_MODIFY is true, makes sure | |
364 | that the thread is stopped and aborted first, and sets the state_changed | |
365 | field in PROC to true. */ | |
366 | thread_state_t | |
367 | proc_get_state (struct proc *proc, int will_modify) | |
368 | { | |
369 | int was_aborted = proc->aborted; | |
370 | ||
371 | proc_debug (proc, "updating state info%s", | |
372 | will_modify ? " (with intention to modify)" : ""); | |
373 | ||
374 | proc_abort (proc, will_modify); | |
375 | ||
c5aa993b | 376 | if (!was_aborted && proc->aborted) |
c906108c SS |
377 | /* PROC's state may have changed since we last fetched it. */ |
378 | proc->state_valid = 0; | |
379 | ||
c5aa993b | 380 | if (!proc->state_valid) |
c906108c SS |
381 | { |
382 | mach_msg_type_number_t state_size = THREAD_STATE_SIZE; | |
0947023d | 383 | kern_return_t err = |
d8734c88 MS |
384 | thread_get_state (proc->port, THREAD_STATE_FLAVOR, |
385 | (thread_state_t) &proc->state, &state_size); | |
386 | ||
c906108c SS |
387 | proc_debug (proc, "getting thread state"); |
388 | proc->state_valid = !err; | |
389 | } | |
390 | ||
391 | if (proc->state_valid) | |
392 | { | |
393 | if (will_modify) | |
394 | proc->state_changed = 1; | |
f75c77fc | 395 | return (thread_state_t) &proc->state; |
c906108c SS |
396 | } |
397 | else | |
398 | return 0; | |
399 | } | |
942fd805 | 400 | |
c906108c SS |
401 | \f |
402 | /* Set PORT to PROC's exception port. */ | |
0947023d | 403 | kern_return_t |
c5aa993b | 404 | proc_get_exception_port (struct proc * proc, mach_port_t * port) |
c906108c SS |
405 | { |
406 | if (proc_is_task (proc)) | |
407 | return task_get_exception_port (proc->port, port); | |
408 | else | |
409 | return thread_get_exception_port (proc->port, port); | |
410 | } | |
411 | ||
412 | /* Set PROC's exception port to PORT. */ | |
0947023d | 413 | kern_return_t |
c5aa993b | 414 | proc_set_exception_port (struct proc * proc, mach_port_t port) |
c906108c | 415 | { |
a9a758e3 | 416 | proc_debug (proc, "setting exception port: %lu", port); |
c906108c SS |
417 | if (proc_is_task (proc)) |
418 | return task_set_exception_port (proc->port, port); | |
419 | else | |
420 | return thread_set_exception_port (proc->port, port); | |
421 | } | |
422 | ||
423 | /* Get PROC's exception port, cleaning up a bit if proc has died. */ | |
424 | static mach_port_t | |
425 | _proc_get_exc_port (struct proc *proc) | |
426 | { | |
427 | mach_port_t exc_port; | |
0947023d | 428 | kern_return_t err = proc_get_exception_port (proc, &exc_port); |
c906108c SS |
429 | |
430 | if (err) | |
431 | /* PROC must be dead. */ | |
432 | { | |
433 | if (proc->exc_port) | |
434 | mach_port_deallocate (mach_task_self (), proc->exc_port); | |
435 | proc->exc_port = MACH_PORT_NULL; | |
436 | if (proc->saved_exc_port) | |
437 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
438 | proc->saved_exc_port = MACH_PORT_NULL; | |
439 | } | |
440 | ||
441 | return exc_port; | |
442 | } | |
443 | ||
0963b4bd MS |
444 | /* Replace PROC's exception port with EXC_PORT, unless it's already |
445 | been done. Stash away any existing exception port so we can | |
446 | restore it later. */ | |
c906108c SS |
447 | void |
448 | proc_steal_exc_port (struct proc *proc, mach_port_t exc_port) | |
449 | { | |
450 | mach_port_t cur_exc_port = _proc_get_exc_port (proc); | |
451 | ||
452 | if (cur_exc_port) | |
453 | { | |
0947023d | 454 | kern_return_t err = 0; |
c906108c | 455 | |
a9a758e3 | 456 | proc_debug (proc, "inserting exception port: %lu", exc_port); |
c906108c SS |
457 | |
458 | if (cur_exc_port != exc_port) | |
459 | /* Put in our exception port. */ | |
460 | err = proc_set_exception_port (proc, exc_port); | |
461 | ||
462 | if (err || cur_exc_port == proc->exc_port) | |
463 | /* We previously set the exception port, and it's still set. So we | |
464 | just keep the old saved port which is what the proc set. */ | |
465 | { | |
466 | if (cur_exc_port) | |
467 | mach_port_deallocate (mach_task_self (), cur_exc_port); | |
468 | } | |
469 | else | |
0963b4bd | 470 | /* Keep a copy of PROC's old exception port so it can be restored. */ |
c906108c SS |
471 | { |
472 | if (proc->saved_exc_port) | |
473 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
474 | proc->saved_exc_port = cur_exc_port; | |
475 | } | |
476 | ||
a9a758e3 | 477 | proc_debug (proc, "saved exception port: %lu", proc->saved_exc_port); |
c906108c SS |
478 | |
479 | if (!err) | |
480 | proc->exc_port = exc_port; | |
481 | else | |
8a3fe4f8 | 482 | warning (_("Error setting exception port for %s: %s"), |
dc672865 | 483 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
484 | } |
485 | } | |
486 | ||
487 | /* If we previously replaced PROC's exception port, put back what we | |
488 | found there at the time, unless *our* exception port has since been | |
489 | overwritten, in which case who knows what's going on. */ | |
490 | void | |
491 | proc_restore_exc_port (struct proc *proc) | |
492 | { | |
493 | mach_port_t cur_exc_port = _proc_get_exc_port (proc); | |
494 | ||
495 | if (cur_exc_port) | |
496 | { | |
0947023d | 497 | kern_return_t err = 0; |
c906108c SS |
498 | |
499 | proc_debug (proc, "restoring real exception port"); | |
500 | ||
501 | if (proc->exc_port == cur_exc_port) | |
502 | /* Our's is still there. */ | |
503 | err = proc_set_exception_port (proc, proc->saved_exc_port); | |
504 | ||
505 | if (proc->saved_exc_port) | |
506 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
507 | proc->saved_exc_port = MACH_PORT_NULL; | |
508 | ||
509 | if (!err) | |
510 | proc->exc_port = MACH_PORT_NULL; | |
511 | else | |
8a3fe4f8 | 512 | warning (_("Error setting exception port for %s: %s"), |
dc672865 | 513 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
514 | } |
515 | } | |
942fd805 | 516 | |
c906108c SS |
517 | \f |
518 | /* Turns hardware tracing in PROC on or off when SET is true or false, | |
519 | respectively. Returns true on success. */ | |
520 | int | |
521 | proc_trace (struct proc *proc, int set) | |
522 | { | |
523 | thread_state_t state = proc_get_state (proc, 1); | |
524 | ||
c5aa993b | 525 | if (!state) |
0963b4bd | 526 | return 0; /* The thread must be dead. */ |
c906108c SS |
527 | |
528 | proc_debug (proc, "tracing %s", set ? "on" : "off"); | |
c5aa993b | 529 | |
c906108c SS |
530 | if (set) |
531 | { | |
532 | /* XXX We don't get the exception unless the thread has its own | |
0963b4bd | 533 | exception port???? */ |
c906108c SS |
534 | if (proc->exc_port == MACH_PORT_NULL) |
535 | proc_steal_exc_port (proc, proc->inf->event_port); | |
536 | THREAD_STATE_SET_TRACED (state); | |
537 | } | |
538 | else | |
539 | THREAD_STATE_CLEAR_TRACED (state); | |
540 | ||
541 | return 1; | |
542 | } | |
942fd805 | 543 | |
c906108c SS |
544 | \f |
545 | /* A variable from which to assign new TIDs. */ | |
546 | static int next_thread_id = 1; | |
547 | ||
548 | /* Returns a new proc structure with the given fields. Also adds a | |
549 | notification for PORT becoming dead to be sent to INF's notify port. */ | |
550 | struct proc * | |
551 | make_proc (struct inf *inf, mach_port_t port, int tid) | |
552 | { | |
0947023d | 553 | kern_return_t err; |
c906108c | 554 | mach_port_t prev_port = MACH_PORT_NULL; |
8d749320 | 555 | struct proc *proc = XNEW (struct proc); |
c906108c SS |
556 | |
557 | proc->port = port; | |
558 | proc->tid = tid; | |
559 | proc->inf = inf; | |
560 | proc->next = 0; | |
561 | proc->saved_exc_port = MACH_PORT_NULL; | |
562 | proc->exc_port = MACH_PORT_NULL; | |
563 | ||
564 | proc->sc = 0; | |
565 | proc->cur_sc = 0; | |
566 | ||
567 | /* Note that these are all the values for threads; the task simply uses the | |
568 | corresponding field in INF directly. */ | |
569 | proc->run_sc = inf->default_thread_run_sc; | |
570 | proc->pause_sc = inf->default_thread_pause_sc; | |
571 | proc->detach_sc = inf->default_thread_detach_sc; | |
572 | proc->resume_sc = proc->run_sc; | |
573 | ||
574 | proc->aborted = 0; | |
575 | proc->dead = 0; | |
576 | proc->state_valid = 0; | |
577 | proc->state_changed = 0; | |
578 | ||
579 | proc_debug (proc, "is new"); | |
580 | ||
581 | /* Get notified when things die. */ | |
582 | err = | |
c5aa993b | 583 | mach_port_request_notification (mach_task_self (), port, |
c906108c SS |
584 | MACH_NOTIFY_DEAD_NAME, 1, |
585 | inf->event_port, | |
586 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
587 | &prev_port); | |
588 | if (err) | |
a9a758e3 | 589 | warning (_("Couldn't request notification for port %lu: %s"), |
dc672865 | 590 | port, safe_strerror (err)); |
c906108c SS |
591 | else |
592 | { | |
a9a758e3 | 593 | proc_debug (proc, "notifications to: %lu", inf->event_port); |
c906108c SS |
594 | if (prev_port != MACH_PORT_NULL) |
595 | mach_port_deallocate (mach_task_self (), prev_port); | |
596 | } | |
597 | ||
598 | if (inf->want_exceptions) | |
942fd805 MK |
599 | { |
600 | if (proc_is_task (proc)) | |
601 | /* Make the task exception port point to us. */ | |
602 | proc_steal_exc_port (proc, inf->event_port); | |
603 | else | |
604 | /* Just clear thread exception ports -- they default to the | |
605 | task one. */ | |
606 | proc_steal_exc_port (proc, MACH_PORT_NULL); | |
607 | } | |
c906108c SS |
608 | |
609 | return proc; | |
610 | } | |
611 | ||
612 | /* Frees PROC and any resources it uses, and returns the value of PROC's | |
613 | next field. */ | |
614 | struct proc * | |
615 | _proc_free (struct proc *proc) | |
616 | { | |
617 | struct inf *inf = proc->inf; | |
618 | struct proc *next = proc->next; | |
619 | ||
620 | proc_debug (proc, "freeing..."); | |
621 | ||
622 | if (proc == inf->step_thread) | |
623 | /* Turn off single stepping. */ | |
624 | inf_set_step_thread (inf, 0); | |
625 | if (proc == inf->wait.thread) | |
626 | inf_clear_wait (inf); | |
627 | if (proc == inf->signal_thread) | |
628 | inf->signal_thread = 0; | |
629 | ||
630 | if (proc->port != MACH_PORT_NULL) | |
631 | { | |
632 | if (proc->exc_port != MACH_PORT_NULL) | |
633 | /* Restore the original exception port. */ | |
634 | proc_restore_exc_port (proc); | |
635 | if (proc->cur_sc != 0) | |
636 | /* Resume the thread/task. */ | |
637 | { | |
638 | proc->sc = 0; | |
639 | proc_update_sc (proc); | |
640 | } | |
641 | mach_port_deallocate (mach_task_self (), proc->port); | |
642 | } | |
643 | ||
b8c9b27d | 644 | xfree (proc); |
c906108c SS |
645 | return next; |
646 | } | |
942fd805 | 647 | |
c906108c | 648 | \f |
f04a82ef | 649 | static struct inf * |
fba45db2 | 650 | make_inf (void) |
c906108c | 651 | { |
8d749320 | 652 | struct inf *inf = XNEW (struct inf); |
c906108c SS |
653 | |
654 | inf->task = 0; | |
655 | inf->threads = 0; | |
656 | inf->threads_up_to_date = 0; | |
657 | inf->pid = 0; | |
658 | inf->wait.status.kind = TARGET_WAITKIND_SPURIOUS; | |
659 | inf->wait.thread = 0; | |
660 | inf->wait.exc.handler = MACH_PORT_NULL; | |
661 | inf->wait.exc.reply = MACH_PORT_NULL; | |
662 | inf->step_thread = 0; | |
663 | inf->signal_thread = 0; | |
664 | inf->event_port = MACH_PORT_NULL; | |
c906108c | 665 | inf->running = 0; |
cce74817 JM |
666 | inf->stopped = 0; |
667 | inf->nomsg = 1; | |
c906108c SS |
668 | inf->traced = 0; |
669 | inf->no_wait = 0; | |
670 | inf->pending_execs = 0; | |
671 | inf->pause_sc = 1; | |
672 | inf->detach_sc = 0; | |
673 | inf->default_thread_run_sc = 0; | |
674 | inf->default_thread_pause_sc = 0; | |
675 | inf->default_thread_detach_sc = 0; | |
676 | inf->want_signals = 1; /* By default */ | |
677 | inf->want_exceptions = 1; /* By default */ | |
678 | ||
679 | return inf; | |
680 | } | |
681 | ||
942fd805 | 682 | /* Clear INF's target wait status. */ |
c906108c SS |
683 | void |
684 | inf_clear_wait (struct inf *inf) | |
685 | { | |
686 | inf_debug (inf, "clearing wait"); | |
687 | inf->wait.status.kind = TARGET_WAITKIND_SPURIOUS; | |
688 | inf->wait.thread = 0; | |
689 | inf->wait.suppress = 0; | |
690 | if (inf->wait.exc.handler != MACH_PORT_NULL) | |
691 | { | |
692 | mach_port_deallocate (mach_task_self (), inf->wait.exc.handler); | |
693 | inf->wait.exc.handler = MACH_PORT_NULL; | |
694 | } | |
695 | if (inf->wait.exc.reply != MACH_PORT_NULL) | |
696 | { | |
697 | mach_port_deallocate (mach_task_self (), inf->wait.exc.reply); | |
698 | inf->wait.exc.reply = MACH_PORT_NULL; | |
699 | } | |
700 | } | |
942fd805 | 701 | |
c906108c SS |
702 | \f |
703 | void | |
704 | inf_cleanup (struct inf *inf) | |
705 | { | |
706 | inf_debug (inf, "cleanup"); | |
707 | ||
708 | inf_clear_wait (inf); | |
709 | ||
710 | inf_set_pid (inf, -1); | |
711 | inf->pid = 0; | |
cce74817 JM |
712 | inf->running = 0; |
713 | inf->stopped = 0; | |
714 | inf->nomsg = 1; | |
c906108c SS |
715 | inf->traced = 0; |
716 | inf->no_wait = 0; | |
c906108c SS |
717 | inf->pending_execs = 0; |
718 | ||
719 | if (inf->event_port) | |
720 | { | |
721 | mach_port_destroy (mach_task_self (), inf->event_port); | |
722 | inf->event_port = MACH_PORT_NULL; | |
723 | } | |
724 | } | |
725 | ||
726 | void | |
727 | inf_startup (struct inf *inf, int pid) | |
728 | { | |
0947023d | 729 | kern_return_t err; |
c906108c SS |
730 | |
731 | inf_debug (inf, "startup: pid = %d", pid); | |
732 | ||
733 | inf_cleanup (inf); | |
734 | ||
735 | /* Make the port on which we receive all events. */ | |
736 | err = mach_port_allocate (mach_task_self (), | |
737 | MACH_PORT_RIGHT_RECEIVE, &inf->event_port); | |
738 | if (err) | |
8a3fe4f8 | 739 | error (_("Error allocating event port: %s"), safe_strerror (err)); |
c906108c SS |
740 | |
741 | /* Make a send right for it, so we can easily copy it for other people. */ | |
742 | mach_port_insert_right (mach_task_self (), inf->event_port, | |
743 | inf->event_port, MACH_MSG_TYPE_MAKE_SEND); | |
744 | inf_set_pid (inf, pid); | |
745 | } | |
942fd805 | 746 | |
c906108c | 747 | \f |
942fd805 | 748 | /* Close current process, if any, and attach INF to process PORT. */ |
c5aa993b | 749 | void |
c906108c SS |
750 | inf_set_pid (struct inf *inf, pid_t pid) |
751 | { | |
752 | task_t task_port; | |
753 | struct proc *task = inf->task; | |
754 | ||
755 | inf_debug (inf, "setting pid: %d", pid); | |
756 | ||
757 | if (pid < 0) | |
758 | task_port = MACH_PORT_NULL; | |
759 | else | |
760 | { | |
0947023d | 761 | kern_return_t err = proc_pid2task (proc_server, pid, &task_port); |
d8734c88 | 762 | |
c906108c | 763 | if (err) |
0963b4bd MS |
764 | error (_("Error getting task for pid %d: %s"), |
765 | pid, safe_strerror (err)); | |
c906108c SS |
766 | } |
767 | ||
a9a758e3 | 768 | inf_debug (inf, "setting task: %lu", task_port); |
c906108c SS |
769 | |
770 | if (inf->pause_sc) | |
771 | task_suspend (task_port); | |
772 | ||
773 | if (task && task->port != task_port) | |
774 | { | |
775 | inf->task = 0; | |
0963b4bd MS |
776 | inf_validate_procs (inf); /* Trash all the threads. */ |
777 | _proc_free (task); /* And the task. */ | |
c906108c SS |
778 | } |
779 | ||
780 | if (task_port != MACH_PORT_NULL) | |
781 | { | |
782 | inf->task = make_proc (inf, task_port, PROC_TID_TASK); | |
783 | inf->threads_up_to_date = 0; | |
784 | } | |
785 | ||
786 | if (inf->task) | |
787 | { | |
788 | inf->pid = pid; | |
789 | if (inf->pause_sc) | |
942fd805 MK |
790 | /* Reflect task_suspend above. */ |
791 | inf->task->sc = inf->task->cur_sc = 1; | |
c906108c SS |
792 | } |
793 | else | |
794 | inf->pid = -1; | |
795 | } | |
942fd805 | 796 | |
c906108c | 797 | \f |
cce74817 JM |
798 | /* Validates INF's stopped, nomsg and traced field from the actual |
799 | proc server state. Note that the traced field is only updated from | |
800 | the proc server state if we do not have a message port. If we do | |
801 | have a message port we'd better look at the tracemask itself. */ | |
c906108c | 802 | static void |
cce74817 | 803 | inf_validate_procinfo (struct inf *inf) |
c906108c SS |
804 | { |
805 | char *noise; | |
806 | mach_msg_type_number_t noise_len = 0; | |
807 | struct procinfo *pi; | |
808 | mach_msg_type_number_t pi_len = 0; | |
809 | int info_flags = 0; | |
0947023d | 810 | kern_return_t err = |
d8734c88 MS |
811 | proc_getprocinfo (proc_server, inf->pid, &info_flags, |
812 | (procinfo_t *) &pi, &pi_len, &noise, &noise_len); | |
c906108c | 813 | |
c5aa993b | 814 | if (!err) |
c906108c SS |
815 | { |
816 | inf->stopped = !!(pi->state & PI_STOPPED); | |
cce74817 JM |
817 | inf->nomsg = !!(pi->state & PI_NOMSG); |
818 | if (inf->nomsg) | |
819 | inf->traced = !!(pi->state & PI_TRACED); | |
a441dfbc ST |
820 | vm_deallocate (mach_task_self (), (vm_address_t) pi, |
821 | pi_len * sizeof (*(procinfo_t) 0)); | |
c906108c | 822 | if (noise_len > 0) |
c5aa993b | 823 | vm_deallocate (mach_task_self (), (vm_address_t) noise, noise_len); |
c906108c SS |
824 | } |
825 | } | |
826 | ||
f90b2b1d JK |
827 | /* Validates INF's task suspend count. If it's higher than we expect, |
828 | verify with the user before `stealing' the extra count. */ | |
c906108c SS |
829 | static void |
830 | inf_validate_task_sc (struct inf *inf) | |
831 | { | |
f90b2b1d JK |
832 | char *noise; |
833 | mach_msg_type_number_t noise_len = 0; | |
834 | struct procinfo *pi; | |
835 | mach_msg_type_number_t pi_len = 0; | |
836 | int info_flags = PI_FETCH_TASKINFO; | |
837 | int suspend_count = -1; | |
0947023d | 838 | kern_return_t err; |
c906108c | 839 | |
f90b2b1d JK |
840 | retry: |
841 | err = proc_getprocinfo (proc_server, inf->pid, &info_flags, | |
942fd805 | 842 | (procinfo_t *) &pi, &pi_len, &noise, &noise_len); |
c906108c | 843 | if (err) |
f90b2b1d JK |
844 | { |
845 | inf->task->dead = 1; /* oh well */ | |
846 | return; | |
847 | } | |
848 | ||
849 | if (inf->task->cur_sc < pi->taskinfo.suspend_count && suspend_count == -1) | |
850 | { | |
851 | /* The proc server might have suspended the task while stopping | |
852 | it. This happens when the task is handling a traced signal. | |
853 | Refetch the suspend count. The proc server should be | |
854 | finished stopping the task by now. */ | |
855 | suspend_count = pi->taskinfo.suspend_count; | |
856 | goto retry; | |
857 | } | |
858 | ||
859 | suspend_count = pi->taskinfo.suspend_count; | |
860 | ||
a441dfbc ST |
861 | vm_deallocate (mach_task_self (), (vm_address_t) pi, |
862 | pi_len * sizeof (*(procinfo_t) 0)); | |
f90b2b1d | 863 | if (noise_len > 0) |
a441dfbc | 864 | vm_deallocate (mach_task_self (), (vm_address_t) noise, noise_len); |
f90b2b1d JK |
865 | |
866 | if (inf->task->cur_sc < suspend_count) | |
c906108c | 867 | { |
651ce16a PA |
868 | if (!query (_("Pid %d has an additional task suspend count of %d;" |
869 | " clear it? "), inf->pid, | |
870 | suspend_count - inf->task->cur_sc)) | |
8a3fe4f8 | 871 | error (_("Additional task suspend count left untouched.")); |
c906108c | 872 | |
f90b2b1d | 873 | inf->task->cur_sc = suspend_count; |
c906108c SS |
874 | } |
875 | } | |
876 | ||
942fd805 MK |
877 | /* Turns tracing for INF on or off, depending on ON, unless it already |
878 | is. If INF is running, the resume_sc count of INF's threads will | |
879 | be modified, and the signal thread will briefly be run to change | |
880 | the trace state. */ | |
f04a82ef | 881 | static void |
c906108c SS |
882 | inf_set_traced (struct inf *inf, int on) |
883 | { | |
942fd805 MK |
884 | if (on == inf->traced) |
885 | return; | |
886 | ||
887 | if (inf->task && !inf->task->dead) | |
888 | /* Make it take effect immediately. */ | |
889 | { | |
890 | sigset_t mask = on ? ~(sigset_t) 0 : 0; | |
0947023d | 891 | kern_return_t err = |
c5aa993b | 892 | INF_RESUME_MSGPORT_RPC (inf, msg_set_init_int (msgport, refport, |
942fd805 | 893 | INIT_TRACEMASK, mask)); |
d8734c88 | 894 | |
942fd805 MK |
895 | if (err == EIEIO) |
896 | { | |
897 | if (on) | |
8a3fe4f8 | 898 | warning (_("Can't modify tracing state for pid %d: %s"), |
942fd805 | 899 | inf->pid, "No signal thread"); |
c906108c | 900 | inf->traced = on; |
942fd805 MK |
901 | } |
902 | else if (err) | |
8a3fe4f8 | 903 | warning (_("Can't modify tracing state for pid %d: %s"), |
dc672865 | 904 | inf->pid, safe_strerror (err)); |
942fd805 MK |
905 | else |
906 | inf->traced = on; | |
907 | } | |
908 | else | |
909 | inf->traced = on; | |
c906108c | 910 | } |
942fd805 | 911 | |
c906108c | 912 | \f |
942fd805 MK |
913 | /* Makes all the real suspend count deltas of all the procs in INF |
914 | match the desired values. Careful to always do thread/task suspend | |
915 | counts in the safe order. Returns true if at least one thread is | |
0963b4bd | 916 | thought to be running. */ |
c906108c SS |
917 | int |
918 | inf_update_suspends (struct inf *inf) | |
919 | { | |
920 | struct proc *task = inf->task; | |
d8734c88 | 921 | |
c906108c SS |
922 | /* We don't have to update INF->threads even though we're iterating over it |
923 | because we'll change a thread only if it already has an existing proc | |
924 | entry. */ | |
c906108c SS |
925 | inf_debug (inf, "updating suspend counts"); |
926 | ||
927 | if (task) | |
928 | { | |
929 | struct proc *thread; | |
930 | int task_running = (task->sc == 0), thread_running = 0; | |
931 | ||
932 | if (task->sc > task->cur_sc) | |
933 | /* The task is becoming _more_ suspended; do before any threads. */ | |
934 | task_running = proc_update_sc (task); | |
935 | ||
936 | if (inf->pending_execs) | |
937 | /* When we're waiting for an exec, things may be happening behind our | |
938 | back, so be conservative. */ | |
939 | thread_running = 1; | |
940 | ||
941 | /* Do all the thread suspend counts. */ | |
942 | for (thread = inf->threads; thread; thread = thread->next) | |
943 | thread_running |= proc_update_sc (thread); | |
944 | ||
945 | if (task->sc != task->cur_sc) | |
946 | /* We didn't do the task first, because we wanted to wait for the | |
947 | threads; do it now. */ | |
948 | task_running = proc_update_sc (task); | |
949 | ||
950 | inf_debug (inf, "%srunning...", | |
951 | (thread_running && task_running) ? "" : "not "); | |
952 | ||
953 | inf->running = thread_running && task_running; | |
954 | ||
955 | /* Once any thread has executed some code, we can't depend on the | |
c5aa993b | 956 | threads list any more. */ |
c906108c SS |
957 | if (inf->running) |
958 | inf->threads_up_to_date = 0; | |
959 | ||
960 | return inf->running; | |
961 | } | |
962 | ||
963 | return 0; | |
964 | } | |
942fd805 | 965 | |
c906108c SS |
966 | \f |
967 | /* Converts a GDB pid to a struct proc. */ | |
968 | struct proc * | |
969 | inf_tid_to_thread (struct inf *inf, int tid) | |
970 | { | |
971 | struct proc *thread = inf->threads; | |
972 | ||
973 | while (thread) | |
974 | if (thread->tid == tid) | |
975 | return thread; | |
976 | else | |
977 | thread = thread->next; | |
978 | return 0; | |
979 | } | |
980 | ||
981 | /* Converts a thread port to a struct proc. */ | |
f04a82ef | 982 | static struct proc * |
c906108c SS |
983 | inf_port_to_thread (struct inf *inf, mach_port_t port) |
984 | { | |
985 | struct proc *thread = inf->threads; | |
d8734c88 | 986 | |
c906108c SS |
987 | while (thread) |
988 | if (thread->port == port) | |
989 | return thread; | |
990 | else | |
991 | thread = thread->next; | |
992 | return 0; | |
993 | } | |
942fd805 | 994 | |
05db5edd ST |
995 | /* See gnu-nat.h. */ |
996 | ||
997 | void | |
998 | inf_threads (struct inf *inf, inf_threads_ftype *f, void *arg) | |
999 | { | |
1000 | struct proc *thread; | |
1001 | ||
1002 | for (thread = inf->threads; thread; thread = thread->next) | |
1003 | f (thread, arg); | |
1004 | } | |
1005 | ||
c906108c SS |
1006 | \f |
1007 | /* Make INF's list of threads be consistent with reality of TASK. */ | |
1008 | void | |
1009 | inf_validate_procs (struct inf *inf) | |
1010 | { | |
c906108c | 1011 | thread_array_t threads; |
942fd805 | 1012 | mach_msg_type_number_t num_threads, i; |
c906108c SS |
1013 | struct proc *task = inf->task; |
1014 | ||
1015 | /* If no threads are currently running, this function will guarantee that | |
1016 | things are up to date. The exception is if there are zero threads -- | |
1017 | then it is almost certainly in an odd state, and probably some outside | |
1018 | agent will create threads. */ | |
1019 | inf->threads_up_to_date = inf->threads ? !inf->running : 0; | |
1020 | ||
1021 | if (task) | |
1022 | { | |
0947023d | 1023 | kern_return_t err = task_threads (task->port, &threads, &num_threads); |
d8734c88 | 1024 | |
c906108c SS |
1025 | inf_debug (inf, "fetching threads"); |
1026 | if (err) | |
1027 | /* TASK must be dead. */ | |
1028 | { | |
1029 | task->dead = 1; | |
1030 | task = 0; | |
1031 | } | |
1032 | } | |
1033 | ||
1034 | if (!task) | |
1035 | { | |
1036 | num_threads = 0; | |
1037 | inf_debug (inf, "no task"); | |
1038 | } | |
1039 | ||
1040 | { | |
942fd805 MK |
1041 | /* Make things normally linear. */ |
1042 | mach_msg_type_number_t search_start = 0; | |
c906108c SS |
1043 | /* Which thread in PROCS corresponds to each task thread, & the task. */ |
1044 | struct proc *matched[num_threads + 1]; | |
1045 | /* The last thread in INF->threads, so we can add to the end. */ | |
1046 | struct proc *last = 0; | |
0963b4bd | 1047 | /* The current thread we're considering. */ |
c906108c SS |
1048 | struct proc *thread = inf->threads; |
1049 | ||
4deab737 | 1050 | memset (matched, 0, sizeof (matched)); |
c906108c SS |
1051 | |
1052 | while (thread) | |
1053 | { | |
942fd805 | 1054 | mach_msg_type_number_t left; |
c906108c SS |
1055 | |
1056 | for (i = search_start, left = num_threads; left; i++, left--) | |
1057 | { | |
1058 | if (i >= num_threads) | |
c5aa993b | 1059 | i -= num_threads; /* I wrapped around. */ |
c906108c SS |
1060 | if (thread->port == threads[i]) |
1061 | /* We already know about this thread. */ | |
1062 | { | |
1063 | matched[i] = thread; | |
1064 | last = thread; | |
1065 | thread = thread->next; | |
1066 | search_start++; | |
1067 | break; | |
1068 | } | |
1069 | } | |
1070 | ||
c5aa993b | 1071 | if (!left) |
c906108c SS |
1072 | { |
1073 | proc_debug (thread, "died!"); | |
1074 | thread->port = MACH_PORT_NULL; | |
c5aa993b | 1075 | thread = _proc_free (thread); /* THREAD is dead. */ |
c4c50d37 DJ |
1076 | if (last) |
1077 | last->next = thread; | |
1078 | else | |
1079 | inf->threads = thread; | |
c906108c SS |
1080 | } |
1081 | } | |
1082 | ||
1083 | for (i = 0; i < num_threads; i++) | |
942fd805 MK |
1084 | { |
1085 | if (matched[i]) | |
1086 | /* Throw away the duplicate send right. */ | |
1087 | mach_port_deallocate (mach_task_self (), threads[i]); | |
1088 | else | |
1089 | /* THREADS[I] is a thread we don't know about yet! */ | |
1090 | { | |
617fd3b5 PA |
1091 | ptid_t ptid; |
1092 | ||
942fd805 | 1093 | thread = make_proc (inf, threads[i], next_thread_id++); |
c4c50d37 DJ |
1094 | if (last) |
1095 | last->next = thread; | |
1096 | else | |
1097 | inf->threads = thread; | |
942fd805 | 1098 | last = thread; |
a9a758e3 | 1099 | proc_debug (thread, "new thread: %lu", threads[i]); |
617fd3b5 | 1100 | |
fd79271b | 1101 | ptid = ptid_t (inf->pid, thread->tid, 0); |
617fd3b5 PA |
1102 | |
1103 | /* Tell GDB's generic thread code. */ | |
1104 | ||
d7e15655 | 1105 | if (inferior_ptid == ptid_t (inf->pid)) |
617fd3b5 PA |
1106 | /* This is the first time we're hearing about thread |
1107 | ids, after a fork-child. */ | |
1108 | thread_change_ptid (inferior_ptid, ptid); | |
1109 | else if (inf->pending_execs != 0) | |
1110 | /* This is a shell thread. */ | |
1111 | add_thread_silent (ptid); | |
1112 | else | |
1113 | add_thread (ptid); | |
942fd805 MK |
1114 | } |
1115 | } | |
c906108c | 1116 | |
c5aa993b | 1117 | vm_deallocate (mach_task_self (), |
942fd805 | 1118 | (vm_address_t) threads, (num_threads * sizeof (thread_t))); |
c906108c SS |
1119 | } |
1120 | } | |
942fd805 | 1121 | |
c906108c SS |
1122 | \f |
1123 | /* Makes sure that INF's thread list is synced with the actual process. */ | |
39efb398 | 1124 | int |
c906108c SS |
1125 | inf_update_procs (struct inf *inf) |
1126 | { | |
c5aa993b | 1127 | if (!inf->task) |
c906108c | 1128 | return 0; |
c5aa993b | 1129 | if (!inf->threads_up_to_date) |
c906108c SS |
1130 | inf_validate_procs (inf); |
1131 | return !!inf->task; | |
1132 | } | |
1133 | ||
1134 | /* Sets the resume_sc of each thread in inf. That of RUN_THREAD is set to 0, | |
1135 | and others are set to their run_sc if RUN_OTHERS is true, and otherwise | |
1136 | their pause_sc. */ | |
39efb398 | 1137 | void |
c906108c SS |
1138 | inf_set_threads_resume_sc (struct inf *inf, |
1139 | struct proc *run_thread, int run_others) | |
1140 | { | |
1141 | struct proc *thread; | |
d8734c88 | 1142 | |
c906108c SS |
1143 | inf_update_procs (inf); |
1144 | for (thread = inf->threads; thread; thread = thread->next) | |
1145 | if (thread == run_thread) | |
1146 | thread->resume_sc = 0; | |
1147 | else if (run_others) | |
1148 | thread->resume_sc = thread->run_sc; | |
1149 | else | |
1150 | thread->resume_sc = thread->pause_sc; | |
1151 | } | |
942fd805 | 1152 | |
c906108c SS |
1153 | \f |
1154 | /* Cause INF to continue execution immediately; individual threads may still | |
1155 | be suspended (but their suspend counts will be updated). */ | |
39efb398 | 1156 | void |
c906108c SS |
1157 | inf_resume (struct inf *inf) |
1158 | { | |
1159 | struct proc *thread; | |
1160 | ||
1161 | inf_update_procs (inf); | |
1162 | ||
1163 | for (thread = inf->threads; thread; thread = thread->next) | |
1164 | thread->sc = thread->resume_sc; | |
1165 | ||
1166 | if (inf->task) | |
1167 | { | |
c5aa993b | 1168 | if (!inf->pending_execs) |
c906108c SS |
1169 | /* Try to make sure our task count is correct -- in the case where |
1170 | we're waiting for an exec though, things are too volatile, so just | |
1171 | assume things will be reasonable (which they usually will be). */ | |
1172 | inf_validate_task_sc (inf); | |
1173 | inf->task->sc = 0; | |
1174 | } | |
1175 | ||
1176 | inf_update_suspends (inf); | |
1177 | } | |
1178 | ||
1179 | /* Cause INF to stop execution immediately; individual threads may still | |
1180 | be running. */ | |
39efb398 | 1181 | void |
c906108c SS |
1182 | inf_suspend (struct inf *inf) |
1183 | { | |
1184 | struct proc *thread; | |
1185 | ||
1186 | inf_update_procs (inf); | |
1187 | ||
1188 | for (thread = inf->threads; thread; thread = thread->next) | |
1189 | thread->sc = thread->pause_sc; | |
1190 | ||
1191 | if (inf->task) | |
1192 | inf->task->sc = inf->pause_sc; | |
1193 | ||
1194 | inf_update_suspends (inf); | |
1195 | } | |
942fd805 | 1196 | |
c906108c | 1197 | \f |
942fd805 MK |
1198 | /* INF has one thread PROC that is in single-stepping mode. This |
1199 | function changes it to be PROC, changing any old step_thread to be | |
1200 | a normal one. A PROC of 0 clears any existing value. */ | |
c906108c SS |
1201 | void |
1202 | inf_set_step_thread (struct inf *inf, struct proc *thread) | |
1203 | { | |
bf62e5b4 | 1204 | gdb_assert (!thread || proc_is_thread (thread)); |
c906108c SS |
1205 | |
1206 | if (thread) | |
1207 | inf_debug (inf, "setting step thread: %d/%d", inf->pid, thread->tid); | |
1208 | else | |
1209 | inf_debug (inf, "clearing step thread"); | |
1210 | ||
1211 | if (inf->step_thread != thread) | |
1212 | { | |
1213 | if (inf->step_thread && inf->step_thread->port != MACH_PORT_NULL) | |
c5aa993b | 1214 | if (!proc_trace (inf->step_thread, 0)) |
c906108c SS |
1215 | return; |
1216 | if (thread && proc_trace (thread, 1)) | |
1217 | inf->step_thread = thread; | |
1218 | else | |
1219 | inf->step_thread = 0; | |
1220 | } | |
1221 | } | |
942fd805 | 1222 | |
c906108c SS |
1223 | \f |
1224 | /* Set up the thread resume_sc's so that only the signal thread is running | |
1225 | (plus whatever other thread are set to always run). Returns true if we | |
1226 | did so, or false if we can't find a signal thread. */ | |
39efb398 | 1227 | int |
c906108c SS |
1228 | inf_set_threads_resume_sc_for_signal_thread (struct inf *inf) |
1229 | { | |
1230 | if (inf->signal_thread) | |
1231 | { | |
1232 | inf_set_threads_resume_sc (inf, inf->signal_thread, 0); | |
1233 | return 1; | |
1234 | } | |
1235 | else | |
1236 | return 0; | |
1237 | } | |
1238 | ||
1239 | static void | |
1240 | inf_update_signal_thread (struct inf *inf) | |
1241 | { | |
1242 | /* XXX for now we assume that if there's a msgport, the 2nd thread is | |
1243 | the signal thread. */ | |
1244 | inf->signal_thread = inf->threads ? inf->threads->next : 0; | |
1245 | } | |
942fd805 | 1246 | |
c906108c SS |
1247 | \f |
1248 | /* Detachs from INF's inferior task, letting it run once again... */ | |
1249 | void | |
1250 | inf_detach (struct inf *inf) | |
1251 | { | |
1252 | struct proc *task = inf->task; | |
1253 | ||
1254 | inf_debug (inf, "detaching..."); | |
1255 | ||
1256 | inf_clear_wait (inf); | |
1257 | inf_set_step_thread (inf, 0); | |
1258 | ||
1259 | if (task) | |
1260 | { | |
1261 | struct proc *thread; | |
1262 | ||
cce74817 JM |
1263 | inf_validate_procinfo (inf); |
1264 | ||
c906108c SS |
1265 | inf_set_traced (inf, 0); |
1266 | if (inf->stopped) | |
cce74817 JM |
1267 | { |
1268 | if (inf->nomsg) | |
1269 | inf_continue (inf); | |
1270 | else | |
a493e3e2 | 1271 | inf_signal (inf, GDB_SIGNAL_0); |
cce74817 | 1272 | } |
c906108c SS |
1273 | |
1274 | proc_restore_exc_port (task); | |
1275 | task->sc = inf->detach_sc; | |
1276 | ||
1277 | for (thread = inf->threads; thread; thread = thread->next) | |
1278 | { | |
1279 | proc_restore_exc_port (thread); | |
1280 | thread->sc = thread->detach_sc; | |
1281 | } | |
1282 | ||
1283 | inf_update_suspends (inf); | |
1284 | } | |
1285 | ||
1286 | inf_cleanup (inf); | |
1287 | } | |
1288 | ||
942fd805 MK |
1289 | /* Attaches INF to the process with process id PID, returning it in a |
1290 | suspended state suitable for debugging. */ | |
c906108c SS |
1291 | void |
1292 | inf_attach (struct inf *inf, int pid) | |
1293 | { | |
1294 | inf_debug (inf, "attaching: %d", pid); | |
1295 | ||
1296 | if (inf->pid) | |
1297 | inf_detach (inf); | |
1298 | ||
1299 | inf_startup (inf, pid); | |
1300 | } | |
942fd805 | 1301 | |
c906108c | 1302 | \f |
0963b4bd | 1303 | /* Makes sure that we've got our exception ports entrenched in the process. */ |
c5aa993b JM |
1304 | void |
1305 | inf_steal_exc_ports (struct inf *inf) | |
c906108c SS |
1306 | { |
1307 | struct proc *thread; | |
1308 | ||
1309 | inf_debug (inf, "stealing exception ports"); | |
1310 | ||
0963b4bd | 1311 | inf_set_step_thread (inf, 0); /* The step thread is special. */ |
c906108c SS |
1312 | |
1313 | proc_steal_exc_port (inf->task, inf->event_port); | |
1314 | for (thread = inf->threads; thread; thread = thread->next) | |
1315 | proc_steal_exc_port (thread, MACH_PORT_NULL); | |
1316 | } | |
1317 | ||
1318 | /* Makes sure the process has its own exception ports. */ | |
c5aa993b JM |
1319 | void |
1320 | inf_restore_exc_ports (struct inf *inf) | |
c906108c SS |
1321 | { |
1322 | struct proc *thread; | |
1323 | ||
1324 | inf_debug (inf, "restoring exception ports"); | |
1325 | ||
0963b4bd | 1326 | inf_set_step_thread (inf, 0); /* The step thread is special. */ |
c906108c SS |
1327 | |
1328 | proc_restore_exc_port (inf->task); | |
1329 | for (thread = inf->threads; thread; thread = thread->next) | |
1330 | proc_restore_exc_port (thread); | |
1331 | } | |
942fd805 | 1332 | |
c906108c SS |
1333 | \f |
1334 | /* Deliver signal SIG to INF. If INF is stopped, delivering a signal, even | |
1335 | signal 0, will continue it. INF is assumed to be in a paused state, and | |
1336 | the resume_sc's of INF's threads may be affected. */ | |
1337 | void | |
2ea28649 | 1338 | inf_signal (struct inf *inf, enum gdb_signal sig) |
c906108c | 1339 | { |
0947023d | 1340 | kern_return_t err = 0; |
2ea28649 | 1341 | int host_sig = gdb_signal_to_host (sig); |
c906108c | 1342 | |
2ea28649 | 1343 | #define NAME gdb_signal_to_name (sig) |
c906108c SS |
1344 | |
1345 | if (host_sig >= _NSIG) | |
1346 | /* A mach exception. Exceptions are encoded in the signal space by | |
1347 | putting them after _NSIG; this assumes they're positive (and not | |
1348 | extremely large)! */ | |
1349 | { | |
1350 | struct inf_wait *w = &inf->wait; | |
d8734c88 | 1351 | |
c906108c SS |
1352 | if (w->status.kind == TARGET_WAITKIND_STOPPED |
1353 | && w->status.value.sig == sig | |
1354 | && w->thread && !w->thread->aborted) | |
1355 | /* We're passing through the last exception we received. This is | |
1356 | kind of bogus, because exceptions are per-thread whereas gdb | |
1357 | treats signals as per-process. We just forward the exception to | |
1358 | the correct handler, even it's not for the same thread as TID -- | |
1359 | i.e., we pretend it's global. */ | |
1360 | { | |
1361 | struct exc_state *e = &w->exc; | |
d8734c88 | 1362 | |
c906108c | 1363 | inf_debug (inf, "passing through exception:" |
a9a758e3 | 1364 | " task = %lu, thread = %lu, exc = %d" |
c906108c SS |
1365 | ", code = %d, subcode = %d", |
1366 | w->thread->port, inf->task->port, | |
1367 | e->exception, e->code, e->subcode); | |
1368 | err = | |
1369 | exception_raise_request (e->handler, | |
1370 | e->reply, MACH_MSG_TYPE_MOVE_SEND_ONCE, | |
1371 | w->thread->port, inf->task->port, | |
1372 | e->exception, e->code, e->subcode); | |
1373 | } | |
1374 | else | |
8a3fe4f8 | 1375 | error (_("Can't forward spontaneous exception (%s)."), NAME); |
c906108c SS |
1376 | } |
1377 | else | |
1378 | /* A Unix signal. */ | |
c5aa993b JM |
1379 | if (inf->stopped) |
1380 | /* The process is stopped and expecting a signal. Just send off a | |
1381 | request and let it get handled when we resume everything. */ | |
1382 | { | |
1383 | inf_debug (inf, "sending %s to stopped process", NAME); | |
1384 | err = | |
1385 | INF_MSGPORT_RPC (inf, | |
1386 | msg_sig_post_untraced_request (msgport, | |
1387 | inf->event_port, | |
1388 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
1389 | host_sig, 0, | |
1390 | refport)); | |
1391 | if (!err) | |
1392 | /* Posting an untraced signal automatically continues it. | |
1393 | We clear this here rather than when we get the reply | |
1394 | because we'd rather assume it's not stopped when it | |
1395 | actually is, than the reverse. */ | |
1396 | inf->stopped = 0; | |
1397 | } | |
1398 | else | |
1399 | /* It's not expecting it. We have to let just the signal thread | |
1400 | run, and wait for it to get into a reasonable state before we | |
1401 | can continue the rest of the process. When we finally resume the | |
1402 | process the signal we request will be the very first thing that | |
0963b4bd | 1403 | happens. */ |
c5aa993b | 1404 | { |
942fd805 MK |
1405 | inf_debug (inf, "sending %s to unstopped process" |
1406 | " (so resuming signal thread)", NAME); | |
c5aa993b | 1407 | err = |
942fd805 MK |
1408 | INF_RESUME_MSGPORT_RPC (inf, |
1409 | msg_sig_post_untraced (msgport, host_sig, | |
1410 | 0, refport)); | |
c5aa993b | 1411 | } |
c906108c SS |
1412 | |
1413 | if (err == EIEIO) | |
0963b4bd | 1414 | /* Can't do too much... */ |
8a3fe4f8 | 1415 | warning (_("Can't deliver signal %s: No signal thread."), NAME); |
c906108c | 1416 | else if (err) |
8a3fe4f8 | 1417 | warning (_("Delivering signal %s: %s"), NAME, safe_strerror (err)); |
c906108c SS |
1418 | |
1419 | #undef NAME | |
1420 | } | |
942fd805 | 1421 | |
c906108c | 1422 | \f |
cce74817 JM |
1423 | /* Continue INF without delivering a signal. This is meant to be used |
1424 | when INF does not have a message port. */ | |
1425 | void | |
1426 | inf_continue (struct inf *inf) | |
1427 | { | |
1428 | process_t proc; | |
0947023d | 1429 | kern_return_t err = proc_pid2proc (proc_server, inf->pid, &proc); |
cce74817 | 1430 | |
c5aa993b | 1431 | if (!err) |
cce74817 JM |
1432 | { |
1433 | inf_debug (inf, "continuing process"); | |
1434 | ||
1435 | err = proc_mark_cont (proc); | |
c5aa993b | 1436 | if (!err) |
cce74817 JM |
1437 | { |
1438 | struct proc *thread; | |
1439 | ||
1440 | for (thread = inf->threads; thread; thread = thread->next) | |
1441 | thread_resume (thread->port); | |
c5aa993b | 1442 | |
cce74817 JM |
1443 | inf->stopped = 0; |
1444 | } | |
1445 | } | |
1446 | ||
1447 | if (err) | |
8a3fe4f8 | 1448 | warning (_("Can't continue process: %s"), safe_strerror (err)); |
cce74817 | 1449 | } |
942fd805 | 1450 | |
cce74817 | 1451 | \f |
c906108c | 1452 | /* The inferior used for all gdb target ops. */ |
c289427b | 1453 | struct inf *gnu_current_inf = 0; |
c906108c SS |
1454 | |
1455 | /* The inferior being waited for by gnu_wait. Since GDB is decidely not | |
1456 | multi-threaded, we don't bother to lock this. */ | |
1457 | struct inf *waiting_inf; | |
1458 | ||
21389b7f TS |
1459 | /* MIG stubs are not yet ready for C++ compilation. */ |
1460 | extern "C" int exc_server (mach_msg_header_t *, mach_msg_header_t *); | |
1461 | extern "C" int msg_reply_server (mach_msg_header_t *, mach_msg_header_t *); | |
1462 | extern "C" int notify_server (mach_msg_header_t *, mach_msg_header_t *); | |
1463 | extern "C" int process_reply_server (mach_msg_header_t *, mach_msg_header_t *); | |
1464 | ||
0963b4bd | 1465 | /* Wait for something to happen in the inferior, returning what in STATUS. */ |
f6ac5f3d PA |
1466 | |
1467 | ptid_t | |
1468 | gnu_nat_target::wait (ptid_t ptid, struct target_waitstatus *status, | |
1469 | int options) | |
c906108c | 1470 | { |
c5aa993b JM |
1471 | struct msg |
1472 | { | |
1473 | mach_msg_header_t hdr; | |
1474 | mach_msg_type_t type; | |
1475 | int data[8000]; | |
942fd805 | 1476 | } msg; |
0947023d | 1477 | kern_return_t err; |
c906108c | 1478 | struct proc *thread; |
c289427b | 1479 | struct inf *inf = gnu_current_inf; |
c906108c | 1480 | |
bf62e5b4 | 1481 | gdb_assert (inf->task); |
c906108c SS |
1482 | |
1483 | if (!inf->threads && !inf->pending_execs) | |
1484 | /* No threads! Assume that maybe some outside agency is frobbing our | |
1485 | task, and really look for new threads. If we can't find any, just tell | |
1486 | the user to try again later. */ | |
1487 | { | |
1488 | inf_validate_procs (inf); | |
1489 | if (!inf->threads && !inf->task->dead) | |
8a3fe4f8 | 1490 | error (_("There are no threads; try again later.")); |
c906108c SS |
1491 | } |
1492 | ||
1493 | waiting_inf = inf; | |
1494 | ||
617fd3b5 | 1495 | inf_debug (inf, "waiting for: %s", target_pid_to_str (ptid)); |
c906108c | 1496 | |
c5aa993b | 1497 | rewait: |
c906108c SS |
1498 | if (proc_wait_pid != inf->pid && !inf->no_wait) |
1499 | /* Always get information on events from the proc server. */ | |
1500 | { | |
1501 | inf_debug (inf, "requesting wait on pid %d", inf->pid); | |
1502 | ||
1503 | if (proc_wait_pid) | |
1504 | /* The proc server is single-threaded, and only allows a single | |
0963b4bd | 1505 | outstanding wait request, so we have to cancel the previous one. */ |
c906108c SS |
1506 | { |
1507 | inf_debug (inf, "cancelling previous wait on pid %d", proc_wait_pid); | |
1508 | interrupt_operation (proc_server, 0); | |
1509 | } | |
1510 | ||
1511 | err = | |
1512 | proc_wait_request (proc_server, inf->event_port, inf->pid, WUNTRACED); | |
1513 | if (err) | |
8a3fe4f8 | 1514 | warning (_("wait request failed: %s"), safe_strerror (err)); |
c906108c SS |
1515 | else |
1516 | { | |
1517 | inf_debug (inf, "waits pending: %d", proc_waits_pending); | |
1518 | proc_wait_pid = inf->pid; | |
942fd805 MK |
1519 | /* Even if proc_waits_pending was > 0 before, we still won't |
1520 | get any other replies, because it was either from a | |
1521 | different INF, or a different process attached to INF -- | |
1522 | and the event port, which is the wait reply port, changes | |
0963b4bd | 1523 | when you switch processes. */ |
c906108c SS |
1524 | proc_waits_pending = 1; |
1525 | } | |
1526 | } | |
1527 | ||
1528 | inf_clear_wait (inf); | |
1529 | ||
1530 | /* What can happen? (1) Dead name notification; (2) Exceptions arrive; | |
1531 | (3) wait reply from the proc server. */ | |
1532 | ||
1533 | inf_debug (inf, "waiting for an event..."); | |
1534 | err = mach_msg (&msg.hdr, MACH_RCV_MSG | MACH_RCV_INTERRUPT, | |
1535 | 0, sizeof (struct msg), inf->event_port, | |
1536 | MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); | |
1537 | ||
1538 | /* Re-suspend the task. */ | |
1539 | inf_suspend (inf); | |
1540 | ||
1541 | if (!inf->task && inf->pending_execs) | |
1542 | /* When doing an exec, it's possible that the old task wasn't reused | |
1543 | (e.g., setuid execs). So if the task seems to have disappeared, | |
1544 | attempt to refetch it, as the pid should still be the same. */ | |
1545 | inf_set_pid (inf, inf->pid); | |
1546 | ||
1547 | if (err == EMACH_RCV_INTERRUPTED) | |
1548 | inf_debug (inf, "interrupted"); | |
1549 | else if (err) | |
8a3fe4f8 | 1550 | error (_("Couldn't wait for an event: %s"), safe_strerror (err)); |
c906108c SS |
1551 | else |
1552 | { | |
c5aa993b JM |
1553 | struct |
1554 | { | |
1555 | mach_msg_header_t hdr; | |
1556 | mach_msg_type_t err_type; | |
1557 | kern_return_t err; | |
1558 | char noise[200]; | |
1559 | } | |
1560 | reply; | |
c906108c SS |
1561 | |
1562 | inf_debug (inf, "event: msgid = %d", msg.hdr.msgh_id); | |
1563 | ||
1564 | /* Handle what we got. */ | |
c5aa993b JM |
1565 | if (!notify_server (&msg.hdr, &reply.hdr) |
1566 | && !exc_server (&msg.hdr, &reply.hdr) | |
1567 | && !process_reply_server (&msg.hdr, &reply.hdr) | |
1568 | && !msg_reply_server (&msg.hdr, &reply.hdr)) | |
c906108c | 1569 | /* Whatever it is, it's something strange. */ |
8a3fe4f8 | 1570 | error (_("Got a strange event, msg id = %d."), msg.hdr.msgh_id); |
c906108c SS |
1571 | |
1572 | if (reply.err) | |
8a3fe4f8 | 1573 | error (_("Handling event, msgid = %d: %s"), |
dc672865 | 1574 | msg.hdr.msgh_id, safe_strerror (reply.err)); |
c906108c SS |
1575 | } |
1576 | ||
1577 | if (inf->pending_execs) | |
1578 | /* We're waiting for the inferior to finish execing. */ | |
1579 | { | |
1580 | struct inf_wait *w = &inf->wait; | |
1581 | enum target_waitkind kind = w->status.kind; | |
1582 | ||
1583 | if (kind == TARGET_WAITKIND_SPURIOUS) | |
1584 | /* Since gdb is actually counting the number of times the inferior | |
1585 | stops, expecting one stop per exec, we only return major events | |
1586 | while execing. */ | |
1587 | { | |
1588 | w->suppress = 1; | |
c82f56d9 | 1589 | inf_debug (inf, "pending_execs, ignoring minor event"); |
c906108c SS |
1590 | } |
1591 | else if (kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 | 1592 | && w->status.value.sig == GDB_SIGNAL_TRAP) |
c906108c SS |
1593 | /* Ah hah! A SIGTRAP from the inferior while starting up probably |
1594 | means we've succesfully completed an exec! */ | |
1595 | { | |
c82f56d9 | 1596 | inf_debug (inf, "one pending exec completed"); |
c906108c SS |
1597 | } |
1598 | else if (kind == TARGET_WAITKIND_STOPPED) | |
1599 | /* It's possible that this signal is because of a crashed process | |
1600 | being handled by the hurd crash server; in this case, the process | |
1601 | will have an extra task suspend, which we need to know about. | |
1602 | Since the code in inf_resume that normally checks for this is | |
1603 | disabled while INF->pending_execs, we do the check here instead. */ | |
1604 | inf_validate_task_sc (inf); | |
1605 | } | |
1606 | ||
1607 | if (inf->wait.suppress) | |
1608 | /* Some totally spurious event happened that we don't consider | |
1609 | worth returning to gdb. Just keep waiting. */ | |
1610 | { | |
1611 | inf_debug (inf, "suppressing return, rewaiting..."); | |
1612 | inf_resume (inf); | |
1613 | goto rewait; | |
1614 | } | |
1615 | ||
1616 | /* Pass back out our results. */ | |
98d346c3 | 1617 | memcpy (status, &inf->wait.status, sizeof (*status)); |
c906108c SS |
1618 | |
1619 | thread = inf->wait.thread; | |
1620 | if (thread) | |
fd79271b | 1621 | ptid = ptid_t (inf->pid, thread->tid, 0); |
d7e15655 | 1622 | else if (ptid == minus_one_ptid) |
617fd3b5 | 1623 | thread = inf_tid_to_thread (inf, -1); |
c906108c | 1624 | else |
e38504b3 | 1625 | thread = inf_tid_to_thread (inf, ptid.lwp ()); |
c906108c SS |
1626 | |
1627 | if (!thread || thread->port == MACH_PORT_NULL) | |
942fd805 MK |
1628 | { |
1629 | /* TID is dead; try and find a new thread. */ | |
1630 | if (inf_update_procs (inf) && inf->threads) | |
fd79271b | 1631 | ptid = ptid_t (inf->pid, inf->threads->tid, 0); /* The first |
0963b4bd MS |
1632 | available |
1633 | thread. */ | |
942fd805 | 1634 | else |
617fd3b5 | 1635 | ptid = inferior_ptid; /* let wait_for_inferior handle exit case */ |
942fd805 | 1636 | } |
c906108c | 1637 | |
617fd3b5 | 1638 | if (thread |
d7e15655 | 1639 | && ptid != minus_one_ptid |
617fd3b5 | 1640 | && status->kind != TARGET_WAITKIND_SPURIOUS |
c906108c | 1641 | && inf->pause_sc == 0 && thread->pause_sc == 0) |
942fd805 MK |
1642 | /* If something actually happened to THREAD, make sure we |
1643 | suspend it. */ | |
c906108c SS |
1644 | { |
1645 | thread->sc = 1; | |
1646 | inf_update_suspends (inf); | |
c5aa993b | 1647 | } |
c906108c | 1648 | |
617fd3b5 PA |
1649 | inf_debug (inf, "returning ptid = %s, status = %s (%d)", |
1650 | target_pid_to_str (ptid), | |
c906108c SS |
1651 | status->kind == TARGET_WAITKIND_EXITED ? "EXITED" |
1652 | : status->kind == TARGET_WAITKIND_STOPPED ? "STOPPED" | |
1653 | : status->kind == TARGET_WAITKIND_SIGNALLED ? "SIGNALLED" | |
1654 | : status->kind == TARGET_WAITKIND_LOADED ? "LOADED" | |
1655 | : status->kind == TARGET_WAITKIND_SPURIOUS ? "SPURIOUS" | |
1656 | : "?", | |
1657 | status->value.integer); | |
1658 | ||
617fd3b5 | 1659 | return ptid; |
c906108c | 1660 | } |
942fd805 | 1661 | |
c906108c SS |
1662 | \f |
1663 | /* The rpc handler called by exc_server. */ | |
0947023d | 1664 | kern_return_t |
c906108c SS |
1665 | S_exception_raise_request (mach_port_t port, mach_port_t reply_port, |
1666 | thread_t thread_port, task_t task_port, | |
1667 | int exception, int code, int subcode) | |
1668 | { | |
1669 | struct inf *inf = waiting_inf; | |
1670 | struct proc *thread = inf_port_to_thread (inf, thread_port); | |
1671 | ||
1672 | inf_debug (waiting_inf, | |
a9a758e3 | 1673 | "thread = %lu, task = %lu, exc = %d, code = %d, subcode = %d", |
942fd805 | 1674 | thread_port, task_port, exception, code, subcode); |
c906108c SS |
1675 | |
1676 | if (!thread) | |
1677 | /* We don't know about thread? */ | |
1678 | { | |
1679 | inf_update_procs (inf); | |
1680 | thread = inf_port_to_thread (inf, thread_port); | |
1681 | if (!thread) | |
1682 | /* Give up, the generating thread is gone. */ | |
1683 | return 0; | |
1684 | } | |
1685 | ||
1686 | mach_port_deallocate (mach_task_self (), thread_port); | |
1687 | mach_port_deallocate (mach_task_self (), task_port); | |
1688 | ||
c5aa993b | 1689 | if (!thread->aborted) |
c906108c SS |
1690 | /* THREAD hasn't been aborted since this exception happened (abortion |
1691 | clears any exception state), so it must be real. */ | |
1692 | { | |
1693 | /* Store away the details; this will destroy any previous info. */ | |
1694 | inf->wait.thread = thread; | |
1695 | ||
1696 | inf->wait.status.kind = TARGET_WAITKIND_STOPPED; | |
1697 | ||
1698 | if (exception == EXC_BREAKPOINT) | |
1699 | /* GDB likes to get SIGTRAP for breakpoints. */ | |
1700 | { | |
a493e3e2 | 1701 | inf->wait.status.value.sig = GDB_SIGNAL_TRAP; |
c906108c SS |
1702 | mach_port_deallocate (mach_task_self (), reply_port); |
1703 | } | |
1704 | else | |
1705 | /* Record the exception so that we can forward it later. */ | |
1706 | { | |
1707 | if (thread->exc_port == port) | |
1708 | { | |
a9a758e3 | 1709 | inf_debug (waiting_inf, "Handler is thread exception port <%lu>", |
c906108c SS |
1710 | thread->saved_exc_port); |
1711 | inf->wait.exc.handler = thread->saved_exc_port; | |
1712 | } | |
1713 | else | |
1714 | { | |
a9a758e3 | 1715 | inf_debug (waiting_inf, "Handler is task exception port <%lu>", |
c906108c SS |
1716 | inf->task->saved_exc_port); |
1717 | inf->wait.exc.handler = inf->task->saved_exc_port; | |
bf62e5b4 | 1718 | gdb_assert (inf->task->exc_port == port); |
c906108c SS |
1719 | } |
1720 | if (inf->wait.exc.handler != MACH_PORT_NULL) | |
0963b4bd | 1721 | /* Add a reference to the exception handler. */ |
c906108c SS |
1722 | mach_port_mod_refs (mach_task_self (), |
1723 | inf->wait.exc.handler, MACH_PORT_RIGHT_SEND, | |
1724 | 1); | |
1725 | ||
1726 | inf->wait.exc.exception = exception; | |
1727 | inf->wait.exc.code = code; | |
1728 | inf->wait.exc.subcode = subcode; | |
1729 | inf->wait.exc.reply = reply_port; | |
1730 | ||
0963b4bd MS |
1731 | /* Exceptions are encoded in the signal space by putting |
1732 | them after _NSIG; this assumes they're positive (and not | |
1733 | extremely large)! */ | |
c906108c | 1734 | inf->wait.status.value.sig = |
2ea28649 | 1735 | gdb_signal_from_host (_NSIG + exception); |
c906108c SS |
1736 | } |
1737 | } | |
1738 | else | |
1739 | /* A supppressed exception, which ignore. */ | |
1740 | { | |
1741 | inf->wait.suppress = 1; | |
1742 | mach_port_deallocate (mach_task_self (), reply_port); | |
1743 | } | |
1744 | ||
1745 | return 0; | |
1746 | } | |
942fd805 | 1747 | |
c906108c SS |
1748 | \f |
1749 | /* Fill in INF's wait field after a task has died without giving us more | |
1750 | detailed information. */ | |
f04a82ef | 1751 | static void |
c906108c SS |
1752 | inf_task_died_status (struct inf *inf) |
1753 | { | |
0963b4bd MS |
1754 | warning (_("Pid %d died with unknown exit status, using SIGKILL."), |
1755 | inf->pid); | |
c906108c | 1756 | inf->wait.status.kind = TARGET_WAITKIND_SIGNALLED; |
a493e3e2 | 1757 | inf->wait.status.value.sig = GDB_SIGNAL_KILL; |
c906108c SS |
1758 | } |
1759 | ||
1760 | /* Notify server routines. The only real one is dead name notification. */ | |
0947023d | 1761 | kern_return_t |
c906108c SS |
1762 | do_mach_notify_dead_name (mach_port_t notify, mach_port_t dead_port) |
1763 | { | |
1764 | struct inf *inf = waiting_inf; | |
1765 | ||
a9a758e3 | 1766 | inf_debug (waiting_inf, "port = %lu", dead_port); |
c906108c SS |
1767 | |
1768 | if (inf->task && inf->task->port == dead_port) | |
1769 | { | |
1770 | proc_debug (inf->task, "is dead"); | |
1771 | inf->task->port = MACH_PORT_NULL; | |
1772 | if (proc_wait_pid == inf->pid) | |
1773 | /* We have a wait outstanding on the process, which will return more | |
1774 | detailed information, so delay until we get that. */ | |
1775 | inf->wait.suppress = 1; | |
1776 | else | |
1777 | /* We never waited for the process (maybe it wasn't a child), so just | |
1778 | pretend it got a SIGKILL. */ | |
1779 | inf_task_died_status (inf); | |
1780 | } | |
1781 | else | |
1782 | { | |
1783 | struct proc *thread = inf_port_to_thread (inf, dead_port); | |
d8734c88 | 1784 | |
c906108c SS |
1785 | if (thread) |
1786 | { | |
1787 | proc_debug (thread, "is dead"); | |
1788 | thread->port = MACH_PORT_NULL; | |
1789 | } | |
f90b2b1d JK |
1790 | |
1791 | if (inf->task->dead) | |
1792 | /* Since the task is dead, its threads are dying with it. */ | |
1793 | inf->wait.suppress = 1; | |
c906108c SS |
1794 | } |
1795 | ||
1796 | mach_port_deallocate (mach_task_self (), dead_port); | |
0963b4bd | 1797 | inf->threads_up_to_date = 0; /* Just in case. */ |
c906108c SS |
1798 | |
1799 | return 0; | |
1800 | } | |
942fd805 | 1801 | |
c906108c | 1802 | \f |
3398af6a | 1803 | #define ILL_RPC(fun, ...) \ |
842c05cd | 1804 | extern kern_return_t fun (__VA_ARGS__); \ |
3398af6a TS |
1805 | kern_return_t fun (__VA_ARGS__) \ |
1806 | { \ | |
1807 | warning (_("illegal rpc: %s"), #fun); \ | |
1808 | return 0; \ | |
1809 | } | |
942fd805 | 1810 | |
3398af6a TS |
1811 | ILL_RPC (do_mach_notify_no_senders, |
1812 | mach_port_t notify, mach_port_mscount_t count) | |
1813 | ILL_RPC (do_mach_notify_port_deleted, | |
1814 | mach_port_t notify, mach_port_t name) | |
1815 | ILL_RPC (do_mach_notify_msg_accepted, | |
1816 | mach_port_t notify, mach_port_t name) | |
1817 | ILL_RPC (do_mach_notify_port_destroyed, | |
1818 | mach_port_t notify, mach_port_t name) | |
1819 | ILL_RPC (do_mach_notify_send_once, | |
1820 | mach_port_t notify) | |
c906108c SS |
1821 | \f |
1822 | /* Process_reply server routines. We only use process_wait_reply. */ | |
1823 | ||
0947023d TS |
1824 | kern_return_t |
1825 | S_proc_wait_reply (mach_port_t reply, kern_return_t err, | |
c906108c SS |
1826 | int status, int sigcode, rusage_t rusage, pid_t pid) |
1827 | { | |
1828 | struct inf *inf = waiting_inf; | |
1829 | ||
1830 | inf_debug (inf, "err = %s, pid = %d, status = 0x%x, sigcode = %d", | |
dc672865 | 1831 | err ? safe_strerror (err) : "0", pid, status, sigcode); |
c906108c SS |
1832 | |
1833 | if (err && proc_wait_pid && (!inf->task || !inf->task->port)) | |
1834 | /* Ack. The task has died, but the task-died notification code didn't | |
1835 | tell anyone because it thought a more detailed reply from the | |
1836 | procserver was forthcoming. However, we now learn that won't | |
1837 | happen... So we have to act like the task just died, and this time, | |
1838 | tell the world. */ | |
1839 | inf_task_died_status (inf); | |
1840 | ||
1841 | if (--proc_waits_pending == 0) | |
1842 | /* PROC_WAIT_PID represents the most recent wait. We will always get | |
1843 | replies in order because the proc server is single threaded. */ | |
1844 | proc_wait_pid = 0; | |
1845 | ||
1846 | inf_debug (inf, "waits pending now: %d", proc_waits_pending); | |
1847 | ||
1848 | if (err) | |
1849 | { | |
1850 | if (err != EINTR) | |
1851 | { | |
0963b4bd MS |
1852 | warning (_("Can't wait for pid %d: %s"), |
1853 | inf->pid, safe_strerror (err)); | |
c906108c SS |
1854 | inf->no_wait = 1; |
1855 | ||
1856 | /* Since we can't see the inferior's signals, don't trap them. */ | |
1857 | inf_set_traced (inf, 0); | |
1858 | } | |
1859 | } | |
1860 | else if (pid == inf->pid) | |
1861 | { | |
1862 | store_waitstatus (&inf->wait.status, status); | |
1863 | if (inf->wait.status.kind == TARGET_WAITKIND_STOPPED) | |
1864 | /* The process has sent us a signal, and stopped itself in a sane | |
1865 | state pending our actions. */ | |
1866 | { | |
1867 | inf_debug (inf, "process has stopped itself"); | |
1868 | inf->stopped = 1; | |
1869 | } | |
1870 | } | |
1871 | else | |
1872 | inf->wait.suppress = 1; /* Something odd happened. Ignore. */ | |
1873 | ||
1874 | return 0; | |
1875 | } | |
1876 | ||
3398af6a TS |
1877 | ILL_RPC (S_proc_setmsgport_reply, |
1878 | mach_port_t reply_port, kern_return_t return_code, | |
1879 | mach_port_t oldmsgport) | |
1880 | ILL_RPC (S_proc_getmsgport_reply, | |
1881 | mach_port_t reply_port, kern_return_t return_code, | |
1882 | mach_port_t msgports) | |
1883 | ILL_RPC (S_proc_pid2task_reply, | |
1884 | mach_port_t reply_port, kern_return_t return_code, mach_port_t task) | |
1885 | ILL_RPC (S_proc_task2pid_reply, | |
1886 | mach_port_t reply_port, kern_return_t return_code, pid_t pid) | |
1887 | ILL_RPC (S_proc_task2proc_reply, | |
1888 | mach_port_t reply_port, kern_return_t return_code, mach_port_t proc) | |
1889 | ILL_RPC (S_proc_proc2task_reply, | |
1890 | mach_port_t reply_port, kern_return_t return_code, mach_port_t task) | |
1891 | ILL_RPC (S_proc_pid2proc_reply, | |
1892 | mach_port_t reply_port, kern_return_t return_code, mach_port_t proc) | |
1893 | ILL_RPC (S_proc_getprocinfo_reply, | |
1894 | mach_port_t reply_port, kern_return_t return_code, | |
1895 | int flags, procinfo_t procinfo, mach_msg_type_number_t procinfoCnt, | |
1896 | data_t threadwaits, mach_msg_type_number_t threadwaitsCnt) | |
1897 | ILL_RPC (S_proc_getprocargs_reply, | |
1898 | mach_port_t reply_port, kern_return_t return_code, | |
1899 | data_t procargs, mach_msg_type_number_t procargsCnt) | |
1900 | ILL_RPC (S_proc_getprocenv_reply, | |
1901 | mach_port_t reply_port, kern_return_t return_code, | |
1902 | data_t procenv, mach_msg_type_number_t procenvCnt) | |
1903 | ILL_RPC (S_proc_getloginid_reply, | |
1904 | mach_port_t reply_port, kern_return_t return_code, pid_t login_id) | |
1905 | ILL_RPC (S_proc_getloginpids_reply, | |
1906 | mach_port_t reply_port, kern_return_t return_code, | |
1907 | pidarray_t pids, mach_msg_type_number_t pidsCnt) | |
1908 | ILL_RPC (S_proc_getlogin_reply, | |
1909 | mach_port_t reply_port, kern_return_t return_code, string_t logname) | |
1910 | ILL_RPC (S_proc_getsid_reply, | |
1911 | mach_port_t reply_port, kern_return_t return_code, pid_t sid) | |
1912 | ILL_RPC (S_proc_getsessionpgids_reply, | |
1913 | mach_port_t reply_port, kern_return_t return_code, | |
1914 | pidarray_t pgidset, mach_msg_type_number_t pgidsetCnt) | |
1915 | ILL_RPC (S_proc_getsessionpids_reply, | |
1916 | mach_port_t reply_port, kern_return_t return_code, | |
1917 | pidarray_t pidset, mach_msg_type_number_t pidsetCnt) | |
1918 | ILL_RPC (S_proc_getsidport_reply, | |
1919 | mach_port_t reply_port, kern_return_t return_code, | |
1920 | mach_port_t sessport) | |
1921 | ILL_RPC (S_proc_getpgrp_reply, | |
1922 | mach_port_t reply_port, kern_return_t return_code, pid_t pgrp) | |
1923 | ILL_RPC (S_proc_getpgrppids_reply, | |
1924 | mach_port_t reply_port, kern_return_t return_code, | |
1925 | pidarray_t pidset, mach_msg_type_number_t pidsetCnt) | |
1926 | ILL_RPC (S_proc_get_tty_reply, | |
1927 | mach_port_t reply_port, kern_return_t return_code, mach_port_t tty) | |
1928 | ILL_RPC (S_proc_getnports_reply, | |
1929 | mach_port_t reply_port, kern_return_t return_code, | |
1930 | mach_msg_type_number_t nports) | |
1931 | ILL_RPC (S_proc_is_important_reply, | |
1932 | mach_port_t reply_port, kern_return_t return_code, | |
1933 | boolean_t essential) | |
1934 | ILL_RPC (S_proc_get_code_reply, | |
1935 | mach_port_t reply_port, kern_return_t return_code, | |
1936 | vm_address_t start_code, vm_address_t end_code) | |
c906108c SS |
1937 | \f |
1938 | /* Msg_reply server routines. We only use msg_sig_post_untraced_reply. */ | |
1939 | ||
0947023d TS |
1940 | kern_return_t |
1941 | S_msg_sig_post_untraced_reply (mach_port_t reply, kern_return_t err) | |
c906108c SS |
1942 | { |
1943 | struct inf *inf = waiting_inf; | |
1944 | ||
1945 | if (err == EBUSY) | |
1946 | /* EBUSY is what we get when the crash server has grabbed control of the | |
1947 | process and doesn't like what signal we tried to send it. Just act | |
1948 | like the process stopped (using a signal of 0 should mean that the | |
1949 | *next* time the user continues, it will pass signal 0, which the crash | |
1950 | server should like). */ | |
1951 | { | |
1952 | inf->wait.status.kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 1953 | inf->wait.status.value.sig = GDB_SIGNAL_0; |
c906108c SS |
1954 | } |
1955 | else if (err) | |
8a3fe4f8 | 1956 | warning (_("Signal delivery failed: %s"), safe_strerror (err)); |
c906108c SS |
1957 | |
1958 | if (err) | |
1959 | /* We only get this reply when we've posted a signal to a process which we | |
1960 | thought was stopped, and which we expected to continue after the signal. | |
1961 | Given that the signal has failed for some reason, it's reasonable to | |
1962 | assume it's still stopped. */ | |
1963 | inf->stopped = 1; | |
1964 | else | |
1965 | inf->wait.suppress = 1; | |
1966 | ||
1967 | return 0; | |
1968 | } | |
1969 | ||
3398af6a | 1970 | ILL_RPC (S_msg_sig_post_reply, |
0947023d | 1971 | mach_port_t reply, kern_return_t err) |
c906108c SS |
1972 | \f |
1973 | /* Returns the number of messages queued for the receive right PORT. */ | |
1974 | static mach_port_msgcount_t | |
1975 | port_msgs_queued (mach_port_t port) | |
1976 | { | |
1977 | struct mach_port_status status; | |
0947023d | 1978 | kern_return_t err = |
d8734c88 | 1979 | mach_port_get_receive_status (mach_task_self (), port, &status); |
c906108c SS |
1980 | |
1981 | if (err) | |
1982 | return 0; | |
1983 | else | |
1984 | return status.mps_msgcount; | |
1985 | } | |
942fd805 | 1986 | |
c906108c SS |
1987 | \f |
1988 | /* Resume execution of the inferior process. | |
1989 | ||
1990 | If STEP is nonzero, single-step it. | |
1991 | If SIGNAL is nonzero, give it that signal. | |
1992 | ||
1993 | TID STEP: | |
1994 | -1 true Single step the current thread allowing other threads to run. | |
1995 | -1 false Continue the current thread allowing other threads to run. | |
1996 | X true Single step the given thread, don't allow any others to run. | |
1997 | X false Continue the given thread, do not allow any others to run. | |
1998 | (Where X, of course, is anything except -1) | |
1999 | ||
2000 | Note that a resume may not `take' if there are pending exceptions/&c | |
2001 | still unprocessed from the last resume we did (any given resume may result | |
0963b4bd MS |
2002 | in multiple events returned by wait). */ |
2003 | ||
f6ac5f3d PA |
2004 | void |
2005 | gnu_nat_target::resume (ptid_t ptid, int step, enum gdb_signal sig) | |
c906108c SS |
2006 | { |
2007 | struct proc *step_thread = 0; | |
617fd3b5 | 2008 | int resume_all; |
c289427b | 2009 | struct inf *inf = gnu_current_inf; |
c906108c | 2010 | |
617fd3b5 PA |
2011 | inf_debug (inf, "ptid = %s, step = %d, sig = %d", |
2012 | target_pid_to_str (ptid), step, sig); | |
c906108c | 2013 | |
cce74817 | 2014 | inf_validate_procinfo (inf); |
c5aa993b | 2015 | |
a493e3e2 | 2016 | if (sig != GDB_SIGNAL_0 || inf->stopped) |
cce74817 | 2017 | { |
a493e3e2 | 2018 | if (sig == GDB_SIGNAL_0 && inf->nomsg) |
cce74817 JM |
2019 | inf_continue (inf); |
2020 | else | |
2021 | inf_signal (inf, sig); | |
2022 | } | |
c906108c SS |
2023 | else if (inf->wait.exc.reply != MACH_PORT_NULL) |
2024 | /* We received an exception to which we have chosen not to forward, so | |
2025 | abort the faulting thread, which will perhaps retake it. */ | |
2026 | { | |
2027 | proc_abort (inf->wait.thread, 1); | |
8a3fe4f8 | 2028 | warning (_("Aborting %s with unforwarded exception %s."), |
c906108c | 2029 | proc_string (inf->wait.thread), |
2ea28649 | 2030 | gdb_signal_to_name (inf->wait.status.value.sig)); |
c906108c SS |
2031 | } |
2032 | ||
2033 | if (port_msgs_queued (inf->event_port)) | |
2034 | /* If there are still messages in our event queue, don't bother resuming | |
0963b4bd | 2035 | the process, as we're just going to stop it right away anyway. */ |
c906108c SS |
2036 | return; |
2037 | ||
2038 | inf_update_procs (inf); | |
2039 | ||
617fd3b5 | 2040 | /* A specific PTID means `step only this process id'. */ |
d7e15655 | 2041 | resume_all = ptid == minus_one_ptid; |
617fd3b5 PA |
2042 | |
2043 | if (resume_all) | |
c906108c SS |
2044 | /* Allow all threads to run, except perhaps single-stepping one. */ |
2045 | { | |
dfd4cc63 | 2046 | inf_debug (inf, "running all threads; tid = %d", |
e99b03dc | 2047 | inferior_ptid.pid ()); |
0963b4bd | 2048 | ptid = inferior_ptid; /* What to step. */ |
c906108c SS |
2049 | inf_set_threads_resume_sc (inf, 0, 1); |
2050 | } | |
2051 | else | |
2052 | /* Just allow a single thread to run. */ | |
2053 | { | |
e38504b3 | 2054 | struct proc *thread = inf_tid_to_thread (inf, ptid.lwp ()); |
d8734c88 | 2055 | |
c5aa993b | 2056 | if (!thread) |
617fd3b5 PA |
2057 | error (_("Can't run single thread id %s: no such thread!"), |
2058 | target_pid_to_str (ptid)); | |
2059 | inf_debug (inf, "running one thread: %s", target_pid_to_str (ptid)); | |
c906108c SS |
2060 | inf_set_threads_resume_sc (inf, thread, 0); |
2061 | } | |
2062 | ||
2063 | if (step) | |
2064 | { | |
e38504b3 | 2065 | step_thread = inf_tid_to_thread (inf, ptid.lwp ()); |
c5aa993b | 2066 | if (!step_thread) |
617fd3b5 PA |
2067 | warning (_("Can't step thread id %s: no such thread."), |
2068 | target_pid_to_str (ptid)); | |
c906108c | 2069 | else |
617fd3b5 | 2070 | inf_debug (inf, "stepping thread: %s", target_pid_to_str (ptid)); |
c906108c SS |
2071 | } |
2072 | if (step_thread != inf->step_thread) | |
2073 | inf_set_step_thread (inf, step_thread); | |
2074 | ||
2075 | inf_debug (inf, "here we go..."); | |
2076 | inf_resume (inf); | |
2077 | } | |
942fd805 | 2078 | |
c906108c | 2079 | \f |
f6ac5f3d PA |
2080 | void |
2081 | gnu_nat_target::kill () | |
c906108c | 2082 | { |
c289427b | 2083 | struct proc *task = gnu_current_inf->task; |
d8734c88 | 2084 | |
c906108c SS |
2085 | if (task) |
2086 | { | |
2087 | proc_debug (task, "terminating..."); | |
2088 | task_terminate (task->port); | |
c289427b | 2089 | inf_set_pid (gnu_current_inf, -1); |
c906108c | 2090 | } |
bc1e6c81 | 2091 | target_mourn_inferior (inferior_ptid); |
c906108c SS |
2092 | } |
2093 | ||
2094 | /* Clean up after the inferior dies. */ | |
f6ac5f3d PA |
2095 | void |
2096 | gnu_nat_target::mourn_inferior () | |
c906108c | 2097 | { |
c289427b PA |
2098 | inf_debug (gnu_current_inf, "rip"); |
2099 | inf_detach (gnu_current_inf); | |
f6ac5f3d | 2100 | inf_child_target::mourn_inferior (); |
c906108c | 2101 | } |
942fd805 | 2102 | |
c906108c SS |
2103 | \f |
2104 | /* Fork an inferior process, and start debugging it. */ | |
2105 | ||
2106 | /* Set INFERIOR_PID to the first thread available in the child, if any. */ | |
2107 | static int | |
fba45db2 | 2108 | inf_pick_first_thread (void) |
c906108c | 2109 | { |
c289427b | 2110 | if (gnu_current_inf->task && gnu_current_inf->threads) |
c906108c | 2111 | /* The first thread. */ |
c289427b | 2112 | return gnu_current_inf->threads->tid; |
c906108c SS |
2113 | else |
2114 | /* What may be the next thread. */ | |
2115 | return next_thread_id; | |
2116 | } | |
2117 | ||
2118 | static struct inf * | |
fba45db2 | 2119 | cur_inf (void) |
c906108c | 2120 | { |
c289427b PA |
2121 | if (!gnu_current_inf) |
2122 | gnu_current_inf = make_inf (); | |
2123 | return gnu_current_inf; | |
c906108c SS |
2124 | } |
2125 | ||
a9617a42 TS |
2126 | static void |
2127 | gnu_ptrace_me (void) | |
2128 | { | |
2129 | /* We're in the child; make this process stop as soon as it execs. */ | |
2130 | struct inf *inf = cur_inf (); | |
2131 | inf_debug (inf, "tracing self"); | |
2132 | if (ptrace (PTRACE_TRACEME) != 0) | |
0db8980c | 2133 | trace_start_error_with_name ("ptrace"); |
a9617a42 TS |
2134 | } |
2135 | ||
f6ac5f3d PA |
2136 | void |
2137 | gnu_nat_target::create_inferior (const char *exec_file, | |
2138 | const std::string &allargs, | |
2139 | char **env, | |
2140 | int from_tty) | |
c906108c SS |
2141 | { |
2142 | struct inf *inf = cur_inf (); | |
b4d1e8c7 | 2143 | int pid; |
c906108c | 2144 | |
b4d1e8c7 | 2145 | inf_debug (inf, "creating inferior"); |
c906108c | 2146 | |
a9617a42 | 2147 | pid = fork_inferior (exec_file, allargs, env, gnu_ptrace_me, |
e69860f1 | 2148 | NULL, NULL, NULL, NULL); |
c906108c | 2149 | |
2090129c SDJ |
2150 | /* We have something that executes now. We'll be running through |
2151 | the shell at this point (if startup-with-shell is true), but the | |
2152 | pid shouldn't change. */ | |
f2907e49 | 2153 | add_thread_silent (ptid_t (pid)); |
2090129c | 2154 | |
b4d1e8c7 PA |
2155 | /* Attach to the now stopped child, which is actually a shell... */ |
2156 | inf_debug (inf, "attaching to child: %d", pid); | |
c906108c | 2157 | |
b4d1e8c7 | 2158 | inf_attach (inf, pid); |
617fd3b5 | 2159 | |
f6ac5f3d | 2160 | push_target (this); |
c906108c | 2161 | |
c82f56d9 | 2162 | inf->pending_execs = 1; |
b4d1e8c7 PA |
2163 | inf->nomsg = 1; |
2164 | inf->traced = 1; | |
c906108c | 2165 | |
b4d1e8c7 | 2166 | /* Now let the child run again, knowing that it will stop |
0963b4bd | 2167 | immediately because of the ptrace. */ |
b4d1e8c7 PA |
2168 | inf_resume (inf); |
2169 | ||
2170 | /* We now have thread info. */ | |
2171 | thread_change_ptid (inferior_ptid, | |
fd79271b | 2172 | ptid_t (inf->pid, inf_pick_first_thread (), 0)); |
c906108c | 2173 | |
2090129c SDJ |
2174 | gdb_startup_inferior (pid, START_INFERIOR_TRAPS_EXPECTED); |
2175 | ||
c82f56d9 | 2176 | inf->pending_execs = 0; |
c752a4cc TS |
2177 | /* Get rid of the old shell threads. */ |
2178 | prune_threads (); | |
c906108c | 2179 | |
cce74817 | 2180 | inf_validate_procinfo (inf); |
c906108c SS |
2181 | inf_update_signal_thread (inf); |
2182 | inf_set_traced (inf, inf->want_signals); | |
2183 | ||
2184 | /* Execing the process will have trashed our exception ports; steal them | |
2185 | back (or make sure they're restored if the user wants that). */ | |
2186 | if (inf->want_exceptions) | |
2187 | inf_steal_exc_ports (inf); | |
2188 | else | |
2189 | inf_restore_exc_ports (inf); | |
c906108c SS |
2190 | } |
2191 | ||
c906108c | 2192 | \f |
c906108c SS |
2193 | /* Attach to process PID, then initialize for debugging it |
2194 | and wait for the trace-trap that results from attaching. */ | |
f6ac5f3d PA |
2195 | void |
2196 | gnu_nat_target::attach (const char *args, int from_tty) | |
c906108c SS |
2197 | { |
2198 | int pid; | |
2199 | char *exec_file; | |
2200 | struct inf *inf = cur_inf (); | |
181e7f93 | 2201 | struct inferior *inferior; |
c906108c | 2202 | |
74164c56 | 2203 | pid = parse_pid_to_attach (args); |
c906108c | 2204 | |
74164c56 | 2205 | if (pid == getpid ()) /* Trying to masturbate? */ |
8a3fe4f8 | 2206 | error (_("I refuse to debug myself!")); |
c906108c SS |
2207 | |
2208 | if (from_tty) | |
2209 | { | |
2210 | exec_file = (char *) get_exec_file (0); | |
2211 | ||
2212 | if (exec_file) | |
2213 | printf_unfiltered ("Attaching to program `%s', pid %d\n", | |
2214 | exec_file, pid); | |
2215 | else | |
2216 | printf_unfiltered ("Attaching to pid %d\n", pid); | |
2217 | ||
2218 | gdb_flush (gdb_stdout); | |
2219 | } | |
2220 | ||
2221 | inf_debug (inf, "attaching to pid: %d", pid); | |
2222 | ||
2223 | inf_attach (inf, pid); | |
a9ab7422 | 2224 | |
f6ac5f3d | 2225 | push_target (this); |
a9ab7422 | 2226 | |
6c95b8df PA |
2227 | inferior = current_inferior (); |
2228 | inferior_appeared (inferior, pid); | |
181e7f93 | 2229 | inferior->attach_flag = 1; |
7f9f62ba | 2230 | |
c906108c SS |
2231 | inf_update_procs (inf); |
2232 | ||
fd79271b | 2233 | inferior_ptid = ptid_t (pid, inf_pick_first_thread (), 0); |
c906108c | 2234 | |
b83266a0 SS |
2235 | /* We have to initialize the terminal settings now, since the code |
2236 | below might try to restore them. */ | |
223ffa71 | 2237 | target_terminal::init (); |
c5aa993b | 2238 | |
c906108c SS |
2239 | /* If the process was stopped before we attached, make it continue the next |
2240 | time the user does a continue. */ | |
cce74817 JM |
2241 | inf_validate_procinfo (inf); |
2242 | ||
2243 | inf_update_signal_thread (inf); | |
2244 | inf_set_traced (inf, inf->want_signals); | |
c906108c | 2245 | |
0963b4bd MS |
2246 | #if 0 /* Do we need this? */ |
2247 | renumber_threads (0); /* Give our threads reasonable names. */ | |
c906108c SS |
2248 | #endif |
2249 | } | |
942fd805 | 2250 | |
c906108c SS |
2251 | \f |
2252 | /* Take a program previously attached to and detaches it. | |
2253 | The program resumes execution and will no longer stop | |
2254 | on signals, etc. We'd better not have left any breakpoints | |
2255 | in the program or it'll die when it hits one. For this | |
2256 | to work, it may be necessary for the process to have been | |
2257 | previously attached. It *might* work if the program was | |
2258 | started via fork. */ | |
f6ac5f3d PA |
2259 | void |
2260 | gnu_nat_target::detach (inferior *inf, int from_tty) | |
c906108c | 2261 | { |
7f9f62ba PA |
2262 | int pid; |
2263 | ||
c906108c SS |
2264 | if (from_tty) |
2265 | { | |
2266 | char *exec_file = get_exec_file (0); | |
d8734c88 | 2267 | |
c906108c SS |
2268 | if (exec_file) |
2269 | printf_unfiltered ("Detaching from program `%s' pid %d\n", | |
c289427b | 2270 | exec_file, gnu_current_inf->pid); |
c906108c | 2271 | else |
c289427b | 2272 | printf_unfiltered ("Detaching from pid %d\n", gnu_current_inf->pid); |
c906108c SS |
2273 | gdb_flush (gdb_stdout); |
2274 | } | |
c5aa993b | 2275 | |
c289427b | 2276 | pid = gnu_current_inf->pid; |
7f9f62ba | 2277 | |
c289427b | 2278 | inf_detach (gnu_current_inf); |
c906108c | 2279 | |
39f77062 | 2280 | inferior_ptid = null_ptid; |
7f9f62ba | 2281 | detach_inferior (pid); |
c906108c | 2282 | |
2d0a338c | 2283 | maybe_unpush_target (); |
c906108c | 2284 | } |
942fd805 | 2285 | \f |
c906108c | 2286 | |
f6ac5f3d PA |
2287 | void |
2288 | gnu_nat_target::stop (ptid_t ptid) | |
c906108c | 2289 | { |
f6ac5f3d | 2290 | error (_("stop target function not implemented")); |
c906108c SS |
2291 | } |
2292 | ||
57810aa7 | 2293 | bool |
f6ac5f3d | 2294 | gnu_nat_target::thread_alive (ptid_t ptid) |
c906108c | 2295 | { |
c289427b PA |
2296 | inf_update_procs (gnu_current_inf); |
2297 | return !!inf_tid_to_thread (gnu_current_inf, | |
e38504b3 | 2298 | ptid.lwp ()); |
c906108c | 2299 | } |
942fd805 | 2300 | |
c906108c | 2301 | \f |
942fd805 MK |
2302 | /* Read inferior task's LEN bytes from ADDR and copy it to MYADDR in |
2303 | gdb's address space. Return 0 on failure; number of bytes read | |
2304 | otherwise. */ | |
9b3f3ee6 TS |
2305 | static int |
2306 | gnu_read_inferior (task_t task, CORE_ADDR addr, gdb_byte *myaddr, int length) | |
c906108c | 2307 | { |
0947023d | 2308 | kern_return_t err; |
c906108c SS |
2309 | vm_address_t low_address = (vm_address_t) trunc_page (addr); |
2310 | vm_size_t aligned_length = | |
c5aa993b JM |
2311 | (vm_size_t) round_page (addr + length) - low_address; |
2312 | pointer_t copied; | |
25c0bd04 | 2313 | mach_msg_type_number_t copy_count; |
c906108c | 2314 | |
0963b4bd | 2315 | /* Get memory from inferior with page aligned addresses. */ |
c906108c SS |
2316 | err = vm_read (task, low_address, aligned_length, &copied, ©_count); |
2317 | if (err) | |
2318 | return 0; | |
2319 | ||
0963b4bd MS |
2320 | err = hurd_safe_copyin (myaddr, (void *) (addr - low_address + copied), |
2321 | length); | |
c906108c SS |
2322 | if (err) |
2323 | { | |
8a3fe4f8 | 2324 | warning (_("Read from inferior faulted: %s"), safe_strerror (err)); |
c906108c SS |
2325 | length = 0; |
2326 | } | |
2327 | ||
2328 | err = vm_deallocate (mach_task_self (), copied, copy_count); | |
2329 | if (err) | |
0963b4bd MS |
2330 | warning (_("gnu_read_inferior vm_deallocate failed: %s"), |
2331 | safe_strerror (err)); | |
c906108c SS |
2332 | |
2333 | return length; | |
2334 | } | |
2335 | ||
2336 | #define CHK_GOTO_OUT(str,ret) \ | |
2337 | do if (ret != KERN_SUCCESS) { errstr = #str; goto out; } while(0) | |
2338 | ||
c5aa993b JM |
2339 | struct vm_region_list |
2340 | { | |
c906108c | 2341 | struct vm_region_list *next; |
c5aa993b JM |
2342 | vm_prot_t protection; |
2343 | vm_address_t start; | |
2344 | vm_size_t length; | |
c906108c SS |
2345 | }; |
2346 | ||
c5aa993b | 2347 | struct obstack region_obstack; |
c906108c | 2348 | |
942fd805 MK |
2349 | /* Write gdb's LEN bytes from MYADDR and copy it to ADDR in inferior |
2350 | task's address space. */ | |
9b3f3ee6 TS |
2351 | static int |
2352 | gnu_write_inferior (task_t task, CORE_ADDR addr, | |
2353 | const gdb_byte *myaddr, int length) | |
c906108c | 2354 | { |
0947023d | 2355 | kern_return_t err; |
c5aa993b JM |
2356 | vm_address_t low_address = (vm_address_t) trunc_page (addr); |
2357 | vm_size_t aligned_length = | |
2358 | (vm_size_t) round_page (addr + length) - low_address; | |
2359 | pointer_t copied; | |
25c0bd04 | 2360 | mach_msg_type_number_t copy_count; |
c5aa993b | 2361 | int deallocate = 0; |
c906108c | 2362 | |
c5aa993b | 2363 | char *errstr = "Bug in gnu_write_inferior"; |
c906108c SS |
2364 | |
2365 | struct vm_region_list *region_element; | |
be903358 | 2366 | struct vm_region_list *region_head = NULL; |
c906108c | 2367 | |
0963b4bd | 2368 | /* Get memory from inferior with page aligned addresses. */ |
c906108c SS |
2369 | err = vm_read (task, |
2370 | low_address, | |
2371 | aligned_length, | |
2372 | &copied, | |
2373 | ©_count); | |
2374 | CHK_GOTO_OUT ("gnu_write_inferior vm_read failed", err); | |
2375 | ||
2376 | deallocate++; | |
2377 | ||
96ffcb62 | 2378 | err = hurd_safe_copyout ((void *) (addr - low_address + copied), |
942fd805 | 2379 | myaddr, length); |
c906108c SS |
2380 | CHK_GOTO_OUT ("Write to inferior faulted", err); |
2381 | ||
2382 | obstack_init (®ion_obstack); | |
2383 | ||
2384 | /* Do writes atomically. | |
942fd805 | 2385 | First check for holes and unwritable memory. */ |
c906108c | 2386 | { |
c5aa993b JM |
2387 | vm_size_t remaining_length = aligned_length; |
2388 | vm_address_t region_address = low_address; | |
c906108c SS |
2389 | |
2390 | struct vm_region_list *scan; | |
2391 | ||
c5aa993b | 2392 | while (region_address < low_address + aligned_length) |
c906108c SS |
2393 | { |
2394 | vm_prot_t protection; | |
2395 | vm_prot_t max_protection; | |
2396 | vm_inherit_t inheritance; | |
2397 | boolean_t shared; | |
2398 | mach_port_t object_name; | |
2399 | vm_offset_t offset; | |
c5aa993b JM |
2400 | vm_size_t region_length = remaining_length; |
2401 | vm_address_t old_address = region_address; | |
2402 | ||
c906108c SS |
2403 | err = vm_region (task, |
2404 | ®ion_address, | |
2405 | ®ion_length, | |
2406 | &protection, | |
2407 | &max_protection, | |
2408 | &inheritance, | |
2409 | &shared, | |
2410 | &object_name, | |
2411 | &offset); | |
2412 | CHK_GOTO_OUT ("vm_region failed", err); | |
2413 | ||
0963b4bd | 2414 | /* Check for holes in memory. */ |
c906108c SS |
2415 | if (old_address != region_address) |
2416 | { | |
a9a758e3 | 2417 | warning (_("No memory at 0x%lx. Nothing written"), |
c906108c SS |
2418 | old_address); |
2419 | err = KERN_SUCCESS; | |
2420 | length = 0; | |
2421 | goto out; | |
2422 | } | |
2423 | ||
2424 | if (!(max_protection & VM_PROT_WRITE)) | |
2425 | { | |
a9a758e3 | 2426 | warning (_("Memory at address 0x%lx is unwritable. " |
0963b4bd | 2427 | "Nothing written"), |
c906108c SS |
2428 | old_address); |
2429 | err = KERN_SUCCESS; | |
2430 | length = 0; | |
2431 | goto out; | |
2432 | } | |
2433 | ||
0963b4bd | 2434 | /* Chain the regions for later use. */ |
8d749320 | 2435 | region_element = XOBNEW (®ion_obstack, struct vm_region_list); |
c5aa993b | 2436 | |
c906108c | 2437 | region_element->protection = protection; |
c5aa993b JM |
2438 | region_element->start = region_address; |
2439 | region_element->length = region_length; | |
c906108c | 2440 | |
0963b4bd | 2441 | /* Chain the regions along with protections. */ |
c906108c | 2442 | region_element->next = region_head; |
c5aa993b JM |
2443 | region_head = region_element; |
2444 | ||
c906108c SS |
2445 | region_address += region_length; |
2446 | remaining_length = remaining_length - region_length; | |
2447 | } | |
2448 | ||
2449 | /* If things fail after this, we give up. | |
942fd805 | 2450 | Somebody is messing up inferior_task's mappings. */ |
c5aa993b | 2451 | |
0963b4bd | 2452 | /* Enable writes to the chained vm regions. */ |
c906108c SS |
2453 | for (scan = region_head; scan; scan = scan->next) |
2454 | { | |
c906108c SS |
2455 | if (!(scan->protection & VM_PROT_WRITE)) |
2456 | { | |
2457 | err = vm_protect (task, | |
2458 | scan->start, | |
2459 | scan->length, | |
2460 | FALSE, | |
2461 | scan->protection | VM_PROT_WRITE); | |
2462 | CHK_GOTO_OUT ("vm_protect: enable write failed", err); | |
2463 | } | |
2464 | } | |
2465 | ||
2466 | err = vm_write (task, | |
2467 | low_address, | |
2468 | copied, | |
2469 | aligned_length); | |
2470 | CHK_GOTO_OUT ("vm_write failed", err); | |
c5aa993b | 2471 | |
0963b4bd | 2472 | /* Set up the original region protections, if they were changed. */ |
c906108c SS |
2473 | for (scan = region_head; scan; scan = scan->next) |
2474 | { | |
c906108c SS |
2475 | if (!(scan->protection & VM_PROT_WRITE)) |
2476 | { | |
2477 | err = vm_protect (task, | |
2478 | scan->start, | |
2479 | scan->length, | |
2480 | FALSE, | |
2481 | scan->protection); | |
2482 | CHK_GOTO_OUT ("vm_protect: enable write failed", err); | |
2483 | } | |
2484 | } | |
2485 | } | |
2486 | ||
c5aa993b | 2487 | out: |
c906108c SS |
2488 | if (deallocate) |
2489 | { | |
2490 | obstack_free (®ion_obstack, 0); | |
c5aa993b | 2491 | |
c906108c SS |
2492 | (void) vm_deallocate (mach_task_self (), |
2493 | copied, | |
2494 | copy_count); | |
2495 | } | |
2496 | ||
2497 | if (err != KERN_SUCCESS) | |
2498 | { | |
8a3fe4f8 | 2499 | warning (_("%s: %s"), errstr, mach_error_string (err)); |
c906108c SS |
2500 | return 0; |
2501 | } | |
2502 | ||
2503 | return length; | |
2504 | } | |
942fd805 | 2505 | |
c906108c | 2506 | \f |
9b3f3ee6 | 2507 | |
edcc890f YQ |
2508 | /* Implement the to_xfer_partial target_ops method for |
2509 | TARGET_OBJECT_MEMORY. */ | |
9b3f3ee6 | 2510 | |
9b409511 | 2511 | static enum target_xfer_status |
9b3f3ee6 | 2512 | gnu_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 | 2513 | CORE_ADDR memaddr, ULONGEST len, ULONGEST *xfered_len) |
c906108c | 2514 | { |
c289427b PA |
2515 | task_t task = (gnu_current_inf |
2516 | ? (gnu_current_inf->task | |
2517 | ? gnu_current_inf->task->port : 0) | |
942fd805 | 2518 | : 0); |
9b3f3ee6 | 2519 | int res; |
c906108c SS |
2520 | |
2521 | if (task == MACH_PORT_NULL) | |
9b3f3ee6 TS |
2522 | return TARGET_XFER_E_IO; |
2523 | ||
2524 | if (writebuf != NULL) | |
2525 | { | |
2526 | inf_debug (gnu_current_inf, "writing %s[%s] <-- %s", | |
b55e14c7 | 2527 | paddress (target_gdbarch (), memaddr), pulongest (len), |
9b3f3ee6 TS |
2528 | host_address_to_string (writebuf)); |
2529 | res = gnu_write_inferior (task, memaddr, writebuf, len); | |
2530 | } | |
c906108c SS |
2531 | else |
2532 | { | |
9b3f3ee6 | 2533 | inf_debug (gnu_current_inf, "reading %s[%s] --> %s", |
b55e14c7 | 2534 | paddress (target_gdbarch (), memaddr), pulongest (len), |
9b3f3ee6 TS |
2535 | host_address_to_string (readbuf)); |
2536 | res = gnu_read_inferior (task, memaddr, readbuf, len); | |
2537 | } | |
9b409511 | 2538 | gdb_assert (res >= 0); |
9b3f3ee6 TS |
2539 | if (res == 0) |
2540 | return TARGET_XFER_E_IO; | |
9b409511 YQ |
2541 | else |
2542 | { | |
2543 | *xfered_len = (ULONGEST) res; | |
2544 | return TARGET_XFER_OK; | |
2545 | } | |
9b3f3ee6 TS |
2546 | } |
2547 | ||
9c4ac400 ST |
2548 | /* GNU does not have auxv, but we can at least fake the AT_ENTRY entry for PIE |
2549 | binaries. */ | |
2550 | static enum target_xfer_status | |
2551 | gnu_xfer_auxv (gdb_byte *readbuf, const gdb_byte *writebuf, | |
2552 | CORE_ADDR memaddr, ULONGEST len, ULONGEST *xfered_len) | |
2553 | { | |
2554 | task_t task = (gnu_current_inf | |
2555 | ? (gnu_current_inf->task | |
2556 | ? gnu_current_inf->task->port : 0) | |
2557 | : 0); | |
2558 | process_t proc; | |
2559 | int res; | |
2560 | kern_return_t err; | |
2561 | vm_address_t entry; | |
2562 | ElfW(auxv_t) auxv[2]; | |
2563 | ||
2564 | if (task == MACH_PORT_NULL) | |
2565 | return TARGET_XFER_E_IO; | |
2566 | if (writebuf != NULL) | |
2567 | return TARGET_XFER_E_IO; | |
2568 | ||
2569 | if (memaddr == sizeof (auxv)) | |
2570 | return TARGET_XFER_EOF; | |
2571 | if (memaddr > sizeof (auxv)) | |
2572 | return TARGET_XFER_E_IO; | |
2573 | ||
2574 | err = proc_task2proc (proc_server, task, &proc); | |
2575 | if (err != 0) | |
2576 | return TARGET_XFER_E_IO; | |
2577 | ||
2578 | /* Get entry from proc server. */ | |
2579 | err = proc_get_entry (proc, &entry); | |
2580 | if (err != 0) | |
2581 | return TARGET_XFER_E_IO; | |
2582 | ||
2583 | /* Fake auxv entry. */ | |
2584 | auxv[0].a_type = AT_ENTRY; | |
2585 | auxv[0].a_un.a_val = entry; | |
2586 | auxv[1].a_type = AT_NULL; | |
2587 | auxv[1].a_un.a_val = 0; | |
2588 | ||
2589 | inf_debug (gnu_current_inf, "reading auxv %s[%s] --> %s", | |
2590 | paddress (target_gdbarch (), memaddr), pulongest (len), | |
2591 | host_address_to_string (readbuf)); | |
2592 | ||
2593 | if (memaddr + len > sizeof (auxv)) | |
2594 | len = sizeof (auxv) - memaddr; | |
2595 | ||
2596 | memcpy (readbuf, (gdb_byte *) &auxv + memaddr, len); | |
2597 | *xfered_len = len; | |
2598 | ||
2599 | return TARGET_XFER_OK; | |
2600 | } | |
2601 | ||
9b3f3ee6 TS |
2602 | /* Target to_xfer_partial implementation. */ |
2603 | ||
f6ac5f3d PA |
2604 | enum target_xfer_status |
2605 | gnu_nat_target::xfer_partial (enum target_object object, | |
2606 | const char *annex, gdb_byte *readbuf, | |
2607 | const gdb_byte *writebuf, ULONGEST offset, | |
2608 | ULONGEST len, ULONGEST *xfered_len) | |
9b3f3ee6 TS |
2609 | { |
2610 | switch (object) | |
2611 | { | |
2612 | case TARGET_OBJECT_MEMORY: | |
9b409511 | 2613 | return gnu_xfer_memory (readbuf, writebuf, offset, len, xfered_len); |
9c4ac400 ST |
2614 | case TARGET_OBJECT_AUXV: |
2615 | return gnu_xfer_auxv (readbuf, writebuf, offset, len, xfered_len); | |
9b3f3ee6 | 2616 | default: |
2ed4b548 | 2617 | return TARGET_XFER_E_IO; |
c906108c SS |
2618 | } |
2619 | } | |
942fd805 | 2620 | |
57e76fac | 2621 | /* Call FUNC on each memory region in the task. */ |
f6ac5f3d PA |
2622 | |
2623 | int | |
2624 | gnu_nat_target::find_memory_regions (find_memory_region_ftype func, | |
2625 | void *data) | |
57e76fac | 2626 | { |
0947023d | 2627 | kern_return_t err; |
57e76fac MS |
2628 | task_t task; |
2629 | vm_address_t region_address, last_region_address, last_region_end; | |
2630 | vm_prot_t last_protection; | |
2631 | ||
c289427b | 2632 | if (gnu_current_inf == 0 || gnu_current_inf->task == 0) |
57e76fac | 2633 | return 0; |
c289427b | 2634 | task = gnu_current_inf->task->port; |
57e76fac MS |
2635 | if (task == MACH_PORT_NULL) |
2636 | return 0; | |
2637 | ||
2638 | region_address = last_region_address = last_region_end = VM_MIN_ADDRESS; | |
2639 | last_protection = VM_PROT_NONE; | |
2640 | while (region_address < VM_MAX_ADDRESS) | |
2641 | { | |
2642 | vm_prot_t protection; | |
2643 | vm_prot_t max_protection; | |
2644 | vm_inherit_t inheritance; | |
2645 | boolean_t shared; | |
2646 | mach_port_t object_name; | |
2647 | vm_offset_t offset; | |
2648 | vm_size_t region_length = VM_MAX_ADDRESS - region_address; | |
2649 | vm_address_t old_address = region_address; | |
2650 | ||
2651 | err = vm_region (task, | |
2652 | ®ion_address, | |
2653 | ®ion_length, | |
2654 | &protection, | |
2655 | &max_protection, | |
2656 | &inheritance, | |
2657 | &shared, | |
2658 | &object_name, | |
2659 | &offset); | |
2660 | if (err == KERN_NO_SPACE) | |
2661 | break; | |
2662 | if (err != KERN_SUCCESS) | |
2663 | { | |
8a3fe4f8 | 2664 | warning (_("vm_region failed: %s"), mach_error_string (err)); |
57e76fac MS |
2665 | return -1; |
2666 | } | |
2667 | ||
2668 | if (protection == last_protection && region_address == last_region_end) | |
2669 | /* This region is contiguous with and indistinguishable from | |
2670 | the previous one, so we just extend that one. */ | |
2671 | last_region_end = region_address += region_length; | |
2672 | else | |
2673 | { | |
2674 | /* This region is distinct from the last one we saw, so report | |
2675 | that previous one. */ | |
2676 | if (last_protection != VM_PROT_NONE) | |
2677 | (*func) (last_region_address, | |
2678 | last_region_end - last_region_address, | |
2679 | last_protection & VM_PROT_READ, | |
2680 | last_protection & VM_PROT_WRITE, | |
2681 | last_protection & VM_PROT_EXECUTE, | |
4f69f4c2 | 2682 | 1, /* MODIFIED is unknown, pass it as true. */ |
57e76fac MS |
2683 | data); |
2684 | last_region_address = region_address; | |
2685 | last_region_end = region_address += region_length; | |
2686 | last_protection = protection; | |
2687 | } | |
2688 | } | |
47f21bcc | 2689 | |
1a113c93 MS |
2690 | /* Report the final region. */ |
2691 | if (last_region_end > last_region_address && last_protection != VM_PROT_NONE) | |
2692 | (*func) (last_region_address, last_region_end - last_region_address, | |
2693 | last_protection & VM_PROT_READ, | |
2694 | last_protection & VM_PROT_WRITE, | |
2695 | last_protection & VM_PROT_EXECUTE, | |
4f69f4c2 | 2696 | 1, /* MODIFIED is unknown, pass it as true. */ |
1a113c93 | 2697 | data); |
47f21bcc MS |
2698 | |
2699 | return 0; | |
57e76fac MS |
2700 | } |
2701 | ||
c906108c | 2702 | \f |
ed9a39eb | 2703 | /* Return printable description of proc. */ |
f90b2b1d | 2704 | char * |
ed9a39eb JM |
2705 | proc_string (struct proc *proc) |
2706 | { | |
2707 | static char tid_str[80]; | |
d8734c88 | 2708 | |
ed9a39eb | 2709 | if (proc_is_task (proc)) |
8c042590 | 2710 | xsnprintf (tid_str, sizeof (tid_str), "process %d", proc->inf->pid); |
ed9a39eb | 2711 | else |
8c042590 PM |
2712 | xsnprintf (tid_str, sizeof (tid_str), "Thread %d.%d", |
2713 | proc->inf->pid, proc->tid); | |
ed9a39eb JM |
2714 | return tid_str; |
2715 | } | |
2716 | ||
f6ac5f3d PA |
2717 | const char * |
2718 | gnu_nat_target::pid_to_str (ptid_t ptid) | |
ed9a39eb | 2719 | { |
c289427b | 2720 | struct inf *inf = gnu_current_inf; |
e38504b3 | 2721 | int tid = ptid.lwp (); |
ed9a39eb JM |
2722 | struct proc *thread = inf_tid_to_thread (inf, tid); |
2723 | ||
2724 | if (thread) | |
2725 | return proc_string (thread); | |
2726 | else | |
2727 | { | |
2728 | static char tid_str[80]; | |
d8734c88 | 2729 | |
8c042590 | 2730 | xsnprintf (tid_str, sizeof (tid_str), "bogus thread id %d", tid); |
ed9a39eb JM |
2731 | return tid_str; |
2732 | } | |
2733 | } | |
942fd805 | 2734 | |
c906108c | 2735 | \f |
c906108c SS |
2736 | /* User task commands. */ |
2737 | ||
28578e6b YQ |
2738 | static struct cmd_list_element *set_task_cmd_list = 0; |
2739 | static struct cmd_list_element *show_task_cmd_list = 0; | |
c906108c SS |
2740 | /* User thread commands. */ |
2741 | ||
2742 | /* Commands with a prefix of `set/show thread'. */ | |
2743 | extern struct cmd_list_element *thread_cmd_list; | |
2744 | struct cmd_list_element *set_thread_cmd_list = NULL; | |
2745 | struct cmd_list_element *show_thread_cmd_list = NULL; | |
2746 | ||
2747 | /* Commands with a prefix of `set/show thread default'. */ | |
2748 | struct cmd_list_element *set_thread_default_cmd_list = NULL; | |
2749 | struct cmd_list_element *show_thread_default_cmd_list = NULL; | |
2750 | ||
2751 | static void | |
981a3fb3 | 2752 | set_thread_cmd (const char *args, int from_tty) |
c906108c | 2753 | { |
0963b4bd MS |
2754 | printf_unfiltered ("\"set thread\" must be followed by the " |
2755 | "name of a thread property, or \"default\".\n"); | |
c906108c SS |
2756 | } |
2757 | ||
2758 | static void | |
981a3fb3 | 2759 | show_thread_cmd (const char *args, int from_tty) |
c906108c | 2760 | { |
0963b4bd MS |
2761 | printf_unfiltered ("\"show thread\" must be followed by the " |
2762 | "name of a thread property, or \"default\".\n"); | |
c906108c SS |
2763 | } |
2764 | ||
2765 | static void | |
981a3fb3 | 2766 | set_thread_default_cmd (const char *args, int from_tty) |
c906108c | 2767 | { |
0963b4bd MS |
2768 | printf_unfiltered ("\"set thread default\" must be followed " |
2769 | "by the name of a thread property.\n"); | |
c906108c SS |
2770 | } |
2771 | ||
2772 | static void | |
981a3fb3 | 2773 | show_thread_default_cmd (const char *args, int from_tty) |
c906108c | 2774 | { |
0963b4bd MS |
2775 | printf_unfiltered ("\"show thread default\" must be followed " |
2776 | "by the name of a thread property.\n"); | |
c906108c SS |
2777 | } |
2778 | ||
2779 | static int | |
5fed81ff | 2780 | parse_int_arg (const char *args, char *cmd_prefix) |
c906108c SS |
2781 | { |
2782 | if (args) | |
2783 | { | |
2784 | char *arg_end; | |
2785 | int val = strtoul (args, &arg_end, 10); | |
d8734c88 | 2786 | |
c906108c SS |
2787 | if (*args && *arg_end == '\0') |
2788 | return val; | |
2789 | } | |
0963b4bd MS |
2790 | error (_("Illegal argument for \"%s\" command, should be an integer."), |
2791 | cmd_prefix); | |
c906108c SS |
2792 | } |
2793 | ||
2794 | static int | |
5fed81ff | 2795 | _parse_bool_arg (const char *args, char *t_val, char *f_val, char *cmd_prefix) |
c906108c SS |
2796 | { |
2797 | if (!args || strcmp (args, t_val) == 0) | |
2798 | return 1; | |
2799 | else if (strcmp (args, f_val) == 0) | |
2800 | return 0; | |
2801 | else | |
0963b4bd MS |
2802 | error (_("Illegal argument for \"%s\" command, " |
2803 | "should be \"%s\" or \"%s\"."), | |
c906108c SS |
2804 | cmd_prefix, t_val, f_val); |
2805 | } | |
2806 | ||
2807 | #define parse_bool_arg(args, cmd_prefix) \ | |
2808 | _parse_bool_arg (args, "on", "off", cmd_prefix) | |
2809 | ||
2810 | static void | |
981a3fb3 | 2811 | check_empty (const char *args, char *cmd_prefix) |
c906108c SS |
2812 | { |
2813 | if (args) | |
8a3fe4f8 | 2814 | error (_("Garbage after \"%s\" command: `%s'"), cmd_prefix, args); |
c906108c SS |
2815 | } |
2816 | ||
2817 | /* Returns the alive thread named by INFERIOR_PID, or signals an error. */ | |
2818 | static struct proc * | |
fba45db2 | 2819 | cur_thread (void) |
c906108c SS |
2820 | { |
2821 | struct inf *inf = cur_inf (); | |
617fd3b5 | 2822 | struct proc *thread = inf_tid_to_thread (inf, |
e38504b3 | 2823 | inferior_ptid.lwp ()); |
c906108c | 2824 | if (!thread) |
8a3fe4f8 | 2825 | error (_("No current thread.")); |
c906108c SS |
2826 | return thread; |
2827 | } | |
2828 | ||
2829 | /* Returns the current inferior, but signals an error if it has no task. */ | |
2830 | static struct inf * | |
fba45db2 | 2831 | active_inf (void) |
c906108c SS |
2832 | { |
2833 | struct inf *inf = cur_inf (); | |
d8734c88 | 2834 | |
c5aa993b | 2835 | if (!inf->task) |
8a3fe4f8 | 2836 | error (_("No current process.")); |
c906108c SS |
2837 | return inf; |
2838 | } | |
942fd805 | 2839 | |
c906108c SS |
2840 | \f |
2841 | static void | |
785102a7 | 2842 | set_task_pause_cmd (int arg, int from_tty) |
c906108c SS |
2843 | { |
2844 | struct inf *inf = cur_inf (); | |
2845 | int old_sc = inf->pause_sc; | |
2846 | ||
785102a7 | 2847 | inf->pause_sc = arg; |
c906108c SS |
2848 | |
2849 | if (old_sc == 0 && inf->pause_sc != 0) | |
2850 | /* If the task is currently unsuspended, immediately suspend it, | |
2851 | otherwise wait until the next time it gets control. */ | |
2852 | inf_suspend (inf); | |
2853 | } | |
2854 | ||
785102a7 | 2855 | static void |
5fed81ff | 2856 | set_task_pause_cmd (const char *args, int from_tty) |
785102a7 TS |
2857 | { |
2858 | set_task_pause_cmd (parse_bool_arg (args, "set task pause"), from_tty); | |
2859 | } | |
2860 | ||
c906108c | 2861 | static void |
5fed81ff | 2862 | show_task_pause_cmd (const char *args, int from_tty) |
c906108c SS |
2863 | { |
2864 | struct inf *inf = cur_inf (); | |
d8734c88 | 2865 | |
c906108c SS |
2866 | check_empty (args, "show task pause"); |
2867 | printf_unfiltered ("The inferior task %s suspended while gdb has control.\n", | |
2868 | inf->task | |
2869 | ? (inf->pause_sc == 0 ? "isn't" : "is") | |
2870 | : (inf->pause_sc == 0 ? "won't be" : "will be")); | |
2871 | } | |
2872 | ||
2873 | static void | |
5fed81ff | 2874 | set_task_detach_sc_cmd (const char *args, int from_tty) |
c906108c | 2875 | { |
0963b4bd MS |
2876 | cur_inf ()->detach_sc = parse_int_arg (args, |
2877 | "set task detach-suspend-count"); | |
c906108c SS |
2878 | } |
2879 | ||
2880 | static void | |
5fed81ff | 2881 | show_task_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
2882 | { |
2883 | check_empty (args, "show task detach-suspend-count"); | |
0963b4bd MS |
2884 | printf_unfiltered ("The inferior task will be left with a " |
2885 | "suspend count of %d when detaching.\n", | |
c906108c SS |
2886 | cur_inf ()->detach_sc); |
2887 | } | |
942fd805 | 2888 | |
c906108c SS |
2889 | \f |
2890 | static void | |
5fed81ff | 2891 | set_thread_default_pause_cmd (const char *args, int from_tty) |
c906108c SS |
2892 | { |
2893 | struct inf *inf = cur_inf (); | |
d8734c88 | 2894 | |
c906108c SS |
2895 | inf->default_thread_pause_sc = |
2896 | parse_bool_arg (args, "set thread default pause") ? 0 : 1; | |
2897 | } | |
2898 | ||
2899 | static void | |
5fed81ff | 2900 | show_thread_default_pause_cmd (const char *args, int from_tty) |
c906108c SS |
2901 | { |
2902 | struct inf *inf = cur_inf (); | |
2903 | int sc = inf->default_thread_pause_sc; | |
d8734c88 | 2904 | |
c906108c SS |
2905 | check_empty (args, "show thread default pause"); |
2906 | printf_unfiltered ("New threads %s suspended while gdb has control%s.\n", | |
2907 | sc ? "are" : "aren't", | |
2908 | !sc && inf->pause_sc ? " (but the task is)" : ""); | |
2909 | } | |
2910 | ||
2911 | static void | |
5fed81ff | 2912 | set_thread_default_run_cmd (const char *args, int from_tty) |
c906108c SS |
2913 | { |
2914 | struct inf *inf = cur_inf (); | |
d8734c88 | 2915 | |
c906108c SS |
2916 | inf->default_thread_run_sc = |
2917 | parse_bool_arg (args, "set thread default run") ? 0 : 1; | |
2918 | } | |
2919 | ||
2920 | static void | |
5fed81ff | 2921 | show_thread_default_run_cmd (const char *args, int from_tty) |
c906108c SS |
2922 | { |
2923 | struct inf *inf = cur_inf (); | |
d8734c88 | 2924 | |
c906108c SS |
2925 | check_empty (args, "show thread default run"); |
2926 | printf_unfiltered ("New threads %s allowed to run.\n", | |
2927 | inf->default_thread_run_sc == 0 ? "are" : "aren't"); | |
2928 | } | |
2929 | ||
2930 | static void | |
5fed81ff | 2931 | set_thread_default_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
2932 | { |
2933 | cur_inf ()->default_thread_detach_sc = | |
2934 | parse_int_arg (args, "set thread default detach-suspend-count"); | |
2935 | } | |
2936 | ||
2937 | static void | |
5fed81ff | 2938 | show_thread_default_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
2939 | { |
2940 | check_empty (args, "show thread default detach-suspend-count"); | |
2941 | printf_unfiltered ("New threads will get a detach-suspend-count of %d.\n", | |
2942 | cur_inf ()->default_thread_detach_sc); | |
2943 | } | |
942fd805 | 2944 | |
c906108c SS |
2945 | \f |
2946 | /* Steal a send right called NAME in the inferior task, and make it PROC's | |
2947 | saved exception port. */ | |
2948 | static void | |
2949 | steal_exc_port (struct proc *proc, mach_port_t name) | |
2950 | { | |
0947023d | 2951 | kern_return_t err; |
c906108c SS |
2952 | mach_port_t port; |
2953 | mach_msg_type_name_t port_type; | |
2954 | ||
2955 | if (!proc || !proc->inf->task) | |
8a3fe4f8 | 2956 | error (_("No inferior task.")); |
c906108c SS |
2957 | |
2958 | err = mach_port_extract_right (proc->inf->task->port, | |
2959 | name, MACH_MSG_TYPE_COPY_SEND, | |
2960 | &port, &port_type); | |
2961 | if (err) | |
a9a758e3 | 2962 | error (_("Couldn't extract send right %lu from inferior: %s"), |
dc672865 | 2963 | name, safe_strerror (err)); |
c906108c SS |
2964 | |
2965 | if (proc->saved_exc_port) | |
2966 | /* Get rid of our reference to the old one. */ | |
2967 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
2968 | ||
2969 | proc->saved_exc_port = port; | |
2970 | ||
c5aa993b | 2971 | if (!proc->exc_port) |
0963b4bd MS |
2972 | /* If PROC is a thread, we may not have set its exception port |
2973 | before. We can't use proc_steal_exc_port because it also sets | |
2974 | saved_exc_port. */ | |
c906108c | 2975 | { |
c5aa993b JM |
2976 | proc->exc_port = proc->inf->event_port; |
2977 | err = proc_set_exception_port (proc, proc->exc_port); | |
8a3fe4f8 | 2978 | error (_("Can't set exception port for %s: %s"), |
dc672865 | 2979 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
2980 | } |
2981 | } | |
942fd805 | 2982 | |
c906108c | 2983 | static void |
5fed81ff | 2984 | set_task_exc_port_cmd (const char *args, int from_tty) |
c906108c SS |
2985 | { |
2986 | struct inf *inf = cur_inf (); | |
d8734c88 | 2987 | |
c906108c | 2988 | if (!args) |
8a3fe4f8 | 2989 | error (_("No argument to \"set task exception-port\" command.")); |
c906108c SS |
2990 | steal_exc_port (inf->task, parse_and_eval_address (args)); |
2991 | } | |
2992 | ||
c5aa993b | 2993 | static void |
5fed81ff | 2994 | set_stopped_cmd (const char *args, int from_tty) |
c906108c SS |
2995 | { |
2996 | cur_inf ()->stopped = _parse_bool_arg (args, "yes", "no", "set stopped"); | |
2997 | } | |
2998 | ||
2999 | static void | |
5fed81ff | 3000 | show_stopped_cmd (const char *args, int from_tty) |
c906108c SS |
3001 | { |
3002 | struct inf *inf = active_inf (); | |
d8734c88 | 3003 | |
c906108c SS |
3004 | check_empty (args, "show stopped"); |
3005 | printf_unfiltered ("The inferior process %s stopped.\n", | |
3006 | inf->stopped ? "is" : "isn't"); | |
3007 | } | |
3008 | ||
c5aa993b | 3009 | static void |
5fed81ff | 3010 | set_sig_thread_cmd (const char *args, int from_tty) |
c906108c | 3011 | { |
c906108c SS |
3012 | struct inf *inf = cur_inf (); |
3013 | ||
c5aa993b | 3014 | if (!args || (!isdigit (*args) && strcmp (args, "none") != 0)) |
8a3fe4f8 | 3015 | error (_("Illegal argument to \"set signal-thread\" command.\n" |
c3187fa5 | 3016 | "Should be a thread ID, or \"none\".")); |
c906108c SS |
3017 | |
3018 | if (strcmp (args, "none") == 0) | |
3019 | inf->signal_thread = 0; | |
3020 | else | |
3021 | { | |
c3187fa5 | 3022 | struct thread_info *tp = parse_thread_id (args, NULL); |
e38504b3 | 3023 | inf->signal_thread = inf_tid_to_thread (inf, tp->ptid.lwp ()); |
c906108c SS |
3024 | } |
3025 | } | |
3026 | ||
3027 | static void | |
5fed81ff | 3028 | show_sig_thread_cmd (const char *args, int from_tty) |
c906108c SS |
3029 | { |
3030 | struct inf *inf = active_inf (); | |
d8734c88 | 3031 | |
c906108c SS |
3032 | check_empty (args, "show signal-thread"); |
3033 | if (inf->signal_thread) | |
3034 | printf_unfiltered ("The signal thread is %s.\n", | |
3035 | proc_string (inf->signal_thread)); | |
3036 | else | |
3037 | printf_unfiltered ("There is no signal thread.\n"); | |
3038 | } | |
942fd805 | 3039 | |
c906108c | 3040 | \f |
c5aa993b | 3041 | static void |
785102a7 | 3042 | set_signals_cmd (int arg, int from_tty) |
c906108c | 3043 | { |
c906108c SS |
3044 | struct inf *inf = cur_inf (); |
3045 | ||
785102a7 | 3046 | inf->want_signals = arg; |
c906108c SS |
3047 | |
3048 | if (inf->task && inf->want_signals != inf->traced) | |
3049 | /* Make this take effect immediately in a running process. */ | |
3050 | inf_set_traced (inf, inf->want_signals); | |
3051 | } | |
3052 | ||
785102a7 | 3053 | static void |
5fed81ff | 3054 | set_signals_cmd (const char *args, int from_tty) |
785102a7 TS |
3055 | { |
3056 | set_signals_cmd(parse_bool_arg (args, "set signals"), from_tty); | |
3057 | } | |
3058 | ||
c906108c | 3059 | static void |
5fed81ff | 3060 | show_signals_cmd (const char *args, int from_tty) |
c906108c SS |
3061 | { |
3062 | struct inf *inf = cur_inf (); | |
d8734c88 | 3063 | |
c906108c SS |
3064 | check_empty (args, "show signals"); |
3065 | printf_unfiltered ("The inferior process's signals %s intercepted.\n", | |
3066 | inf->task | |
3067 | ? (inf->traced ? "are" : "aren't") | |
3068 | : (inf->want_signals ? "will be" : "won't be")); | |
3069 | } | |
3070 | ||
c5aa993b | 3071 | static void |
785102a7 | 3072 | set_exceptions_cmd (int arg, int from_tty) |
c906108c SS |
3073 | { |
3074 | struct inf *inf = cur_inf (); | |
c906108c | 3075 | |
c26e9cbb YQ |
3076 | /* Make this take effect immediately in a running process. */ |
3077 | /* XXX */ ; | |
c906108c | 3078 | |
785102a7 TS |
3079 | inf->want_exceptions = arg; |
3080 | } | |
3081 | ||
3082 | static void | |
5fed81ff | 3083 | set_exceptions_cmd (const char *args, int from_tty) |
785102a7 TS |
3084 | { |
3085 | set_exceptions_cmd (parse_bool_arg (args, "set exceptions"), from_tty); | |
c906108c SS |
3086 | } |
3087 | ||
3088 | static void | |
5fed81ff | 3089 | show_exceptions_cmd (const char *args, int from_tty) |
c906108c SS |
3090 | { |
3091 | struct inf *inf = cur_inf (); | |
d8734c88 | 3092 | |
c906108c SS |
3093 | check_empty (args, "show exceptions"); |
3094 | printf_unfiltered ("Exceptions in the inferior %s trapped.\n", | |
3095 | inf->task | |
3096 | ? (inf->want_exceptions ? "are" : "aren't") | |
3097 | : (inf->want_exceptions ? "will be" : "won't be")); | |
3098 | } | |
942fd805 | 3099 | |
c906108c SS |
3100 | \f |
3101 | static void | |
981a3fb3 | 3102 | set_task_cmd (const char *args, int from_tty) |
c906108c | 3103 | { |
942fd805 MK |
3104 | printf_unfiltered ("\"set task\" must be followed by the name" |
3105 | " of a task property.\n"); | |
c906108c SS |
3106 | } |
3107 | ||
3108 | static void | |
981a3fb3 | 3109 | show_task_cmd (const char *args, int from_tty) |
c906108c SS |
3110 | { |
3111 | struct inf *inf = cur_inf (); | |
3112 | ||
3113 | check_empty (args, "show task"); | |
3114 | ||
3115 | show_signals_cmd (0, from_tty); | |
3116 | show_exceptions_cmd (0, from_tty); | |
3117 | show_task_pause_cmd (0, from_tty); | |
3118 | ||
3119 | if (inf->pause_sc == 0) | |
3120 | show_thread_default_pause_cmd (0, from_tty); | |
3121 | show_thread_default_run_cmd (0, from_tty); | |
3122 | ||
3123 | if (inf->task) | |
3124 | { | |
3125 | show_stopped_cmd (0, from_tty); | |
3126 | show_sig_thread_cmd (0, from_tty); | |
3127 | } | |
3128 | ||
3129 | if (inf->detach_sc != 0) | |
3130 | show_task_detach_sc_cmd (0, from_tty); | |
3131 | if (inf->default_thread_detach_sc != 0) | |
3132 | show_thread_default_detach_sc_cmd (0, from_tty); | |
3133 | } | |
942fd805 | 3134 | |
c906108c SS |
3135 | \f |
3136 | static void | |
5fed81ff | 3137 | set_noninvasive_cmd (const char *args, int from_tty) |
c906108c SS |
3138 | { |
3139 | /* Invert the sense of the arg for each component. */ | |
785102a7 | 3140 | int inv_arg = parse_bool_arg (args, "set noninvasive") ? 0 : 1; |
c906108c | 3141 | |
785102a7 TS |
3142 | set_task_pause_cmd (inv_arg, from_tty); |
3143 | set_signals_cmd (inv_arg, from_tty); | |
3144 | set_exceptions_cmd (inv_arg, from_tty); | |
c906108c | 3145 | } |
942fd805 | 3146 | |
c906108c SS |
3147 | \f |
3148 | static void | |
0cc6f43d | 3149 | info_port_rights (const char *args, mach_port_type_t only) |
c906108c SS |
3150 | { |
3151 | struct inf *inf = active_inf (); | |
3d6d86c6 | 3152 | struct value *vmark = value_mark (); |
c906108c SS |
3153 | |
3154 | if (args) | |
3155 | /* Explicit list of port rights. */ | |
3156 | { | |
3157 | while (*args) | |
3158 | { | |
3d6d86c6 | 3159 | struct value *val = parse_to_comma_and_eval (&args); |
c906108c SS |
3160 | long right = value_as_long (val); |
3161 | error_t err = | |
d8734c88 MS |
3162 | print_port_info (right, 0, inf->task->port, PORTINFO_DETAILS, |
3163 | stdout); | |
3164 | ||
c906108c | 3165 | if (err) |
8a3fe4f8 | 3166 | error (_("%ld: %s."), right, safe_strerror (err)); |
c906108c SS |
3167 | } |
3168 | } | |
3169 | else | |
3170 | /* Print all of them. */ | |
3171 | { | |
3172 | error_t err = | |
d8734c88 MS |
3173 | print_task_ports_info (inf->task->port, only, PORTINFO_DETAILS, |
3174 | stdout); | |
c906108c | 3175 | if (err) |
8a3fe4f8 | 3176 | error (_("%s."), safe_strerror (err)); |
c906108c SS |
3177 | } |
3178 | ||
3179 | value_free_to_mark (vmark); | |
3180 | } | |
3181 | ||
3182 | static void | |
1d12d88f | 3183 | info_send_rights_cmd (const char *args, int from_tty) |
c906108c SS |
3184 | { |
3185 | info_port_rights (args, MACH_PORT_TYPE_SEND); | |
3186 | } | |
942fd805 | 3187 | |
c906108c | 3188 | static void |
1d12d88f | 3189 | info_recv_rights_cmd (const char *args, int from_tty) |
c906108c SS |
3190 | { |
3191 | info_port_rights (args, MACH_PORT_TYPE_RECEIVE); | |
3192 | } | |
942fd805 | 3193 | |
c906108c | 3194 | static void |
1d12d88f | 3195 | info_port_sets_cmd (const char *args, int from_tty) |
c906108c SS |
3196 | { |
3197 | info_port_rights (args, MACH_PORT_TYPE_PORT_SET); | |
3198 | } | |
942fd805 | 3199 | |
c906108c | 3200 | static void |
1d12d88f | 3201 | info_dead_names_cmd (const char *args, int from_tty) |
c906108c SS |
3202 | { |
3203 | info_port_rights (args, MACH_PORT_TYPE_DEAD_NAME); | |
3204 | } | |
942fd805 | 3205 | |
c906108c | 3206 | static void |
1d12d88f | 3207 | info_port_rights_cmd (const char *args, int from_tty) |
c906108c SS |
3208 | { |
3209 | info_port_rights (args, ~0); | |
3210 | } | |
942fd805 | 3211 | |
c906108c | 3212 | \f |
c5aa993b | 3213 | static void |
942fd805 | 3214 | add_task_commands (void) |
c906108c | 3215 | { |
1a966eab AC |
3216 | add_cmd ("pause", class_run, set_thread_default_pause_cmd, _("\ |
3217 | Set whether the new threads are suspended while gdb has control.\n\ | |
942fd805 MK |
3218 | This property normally has no effect because the whole task is\n\ |
3219 | suspended, however, that may be disabled with \"set task pause off\".\n\ | |
1a966eab | 3220 | The default value is \"off\"."), |
c906108c | 3221 | &set_thread_default_cmd_list); |
1a966eab AC |
3222 | add_cmd ("pause", no_class, show_thread_default_pause_cmd, _("\ |
3223 | Show whether new threads are suspended while gdb has control."), | |
c906108c | 3224 | &show_thread_default_cmd_list); |
942fd805 | 3225 | |
1a966eab AC |
3226 | add_cmd ("run", class_run, set_thread_default_run_cmd, _("\ |
3227 | Set whether new threads are allowed to run (once gdb has noticed them)."), | |
c906108c | 3228 | &set_thread_default_cmd_list); |
1a966eab AC |
3229 | add_cmd ("run", no_class, show_thread_default_run_cmd, _("\ |
3230 | Show whether new threads are allowed to run (once gdb has noticed them)."), | |
c906108c | 3231 | &show_thread_default_cmd_list); |
942fd805 | 3232 | |
c906108c | 3233 | add_cmd ("detach-suspend-count", class_run, set_thread_default_detach_sc_cmd, |
1a966eab | 3234 | _("Set the default detach-suspend-count value for new threads."), |
c906108c SS |
3235 | &set_thread_default_cmd_list); |
3236 | add_cmd ("detach-suspend-count", no_class, show_thread_default_detach_sc_cmd, | |
1a966eab | 3237 | _("Show the default detach-suspend-count value for new threads."), |
c906108c SS |
3238 | &show_thread_default_cmd_list); |
3239 | ||
1a966eab AC |
3240 | add_cmd ("signals", class_run, set_signals_cmd, _("\ |
3241 | Set whether the inferior process's signals will be intercepted.\n\ | |
3242 | Mach exceptions (such as breakpoint traps) are not affected."), | |
c906108c SS |
3243 | &setlist); |
3244 | add_alias_cmd ("sigs", "signals", class_run, 1, &setlist); | |
1a966eab AC |
3245 | add_cmd ("signals", no_class, show_signals_cmd, _("\ |
3246 | Show whether the inferior process's signals will be intercepted."), | |
c906108c SS |
3247 | &showlist); |
3248 | add_alias_cmd ("sigs", "signals", no_class, 1, &showlist); | |
3249 | ||
1a966eab AC |
3250 | add_cmd ("signal-thread", class_run, set_sig_thread_cmd, _("\ |
3251 | Set the thread that gdb thinks is the libc signal thread.\n\ | |
3252 | This thread is run when delivering a signal to a non-stopped process."), | |
c906108c SS |
3253 | &setlist); |
3254 | add_alias_cmd ("sigthread", "signal-thread", class_run, 1, &setlist); | |
1a966eab AC |
3255 | add_cmd ("signal-thread", no_class, show_sig_thread_cmd, _("\ |
3256 | Set the thread that gdb thinks is the libc signal thread."), | |
c906108c SS |
3257 | &showlist); |
3258 | add_alias_cmd ("sigthread", "signal-thread", no_class, 1, &showlist); | |
3259 | ||
1a966eab AC |
3260 | add_cmd ("stopped", class_run, set_stopped_cmd, _("\ |
3261 | Set whether gdb thinks the inferior process is stopped as with SIGSTOP.\n\ | |
3262 | Stopped process will be continued by sending them a signal."), | |
c906108c | 3263 | &setlist); |
fe79276f | 3264 | add_cmd ("stopped", no_class, show_stopped_cmd, _("\ |
1a966eab | 3265 | Show whether gdb thinks the inferior process is stopped as with SIGSTOP."), |
c906108c SS |
3266 | &showlist); |
3267 | ||
1a966eab AC |
3268 | add_cmd ("exceptions", class_run, set_exceptions_cmd, _("\ |
3269 | Set whether exceptions in the inferior process will be trapped.\n\ | |
942fd805 | 3270 | When exceptions are turned off, neither breakpoints nor single-stepping\n\ |
1a966eab | 3271 | will work."), |
c906108c SS |
3272 | &setlist); |
3273 | /* Allow `set exc' despite conflict with `set exception-port'. */ | |
3274 | add_alias_cmd ("exc", "exceptions", class_run, 1, &setlist); | |
1a966eab AC |
3275 | add_cmd ("exceptions", no_class, show_exceptions_cmd, _("\ |
3276 | Show whether exceptions in the inferior process will be trapped."), | |
c906108c SS |
3277 | &showlist); |
3278 | ||
3279 | add_prefix_cmd ("task", no_class, set_task_cmd, | |
1bedd215 | 3280 | _("Command prefix for setting task attributes."), |
c906108c SS |
3281 | &set_task_cmd_list, "set task ", 0, &setlist); |
3282 | add_prefix_cmd ("task", no_class, show_task_cmd, | |
1bedd215 | 3283 | _("Command prefix for showing task attributes."), |
c906108c SS |
3284 | &show_task_cmd_list, "show task ", 0, &showlist); |
3285 | ||
1a966eab AC |
3286 | add_cmd ("pause", class_run, set_task_pause_cmd, _("\ |
3287 | Set whether the task is suspended while gdb has control.\n\ | |
942fd805 MK |
3288 | A value of \"on\" takes effect immediately, otherwise nothing happens\n\ |
3289 | until the next time the program is continued.\n\ | |
3290 | When setting this to \"off\", \"set thread default pause on\" can be\n\ | |
1a966eab | 3291 | used to pause individual threads by default instead."), |
c906108c SS |
3292 | &set_task_cmd_list); |
3293 | add_cmd ("pause", no_class, show_task_pause_cmd, | |
1a966eab | 3294 | _("Show whether the task is suspended while gdb has control."), |
c906108c | 3295 | &show_task_cmd_list); |
942fd805 | 3296 | |
c906108c | 3297 | add_cmd ("detach-suspend-count", class_run, set_task_detach_sc_cmd, |
1a966eab | 3298 | _("Set the suspend count will leave on the thread when detaching."), |
c906108c SS |
3299 | &set_task_cmd_list); |
3300 | add_cmd ("detach-suspend-count", no_class, show_task_detach_sc_cmd, | |
0963b4bd MS |
3301 | _("Show the suspend count will leave " |
3302 | "on the thread when detaching."), | |
c906108c SS |
3303 | &show_task_cmd_list); |
3304 | ||
1a966eab AC |
3305 | add_cmd ("exception-port", no_class, set_task_exc_port_cmd, _("\ |
3306 | Set the task exception port to which we forward exceptions.\n\ | |
3307 | The argument should be the value of the send right in the task."), | |
c906108c SS |
3308 | &set_task_cmd_list); |
3309 | add_alias_cmd ("excp", "exception-port", no_class, 1, &set_task_cmd_list); | |
942fd805 MK |
3310 | add_alias_cmd ("exc-port", "exception-port", no_class, 1, |
3311 | &set_task_cmd_list); | |
c906108c SS |
3312 | |
3313 | /* A convenient way of turning on all options require to noninvasively | |
3314 | debug running tasks. */ | |
1a966eab AC |
3315 | add_cmd ("noninvasive", no_class, set_noninvasive_cmd, _("\ |
3316 | Set task options so that we interfere as little as possible.\n\ | |
942fd805 | 3317 | This is the same as setting `task pause', `exceptions', and\n\ |
1a966eab | 3318 | `signals' to the opposite value."), |
c906108c SS |
3319 | &setlist); |
3320 | ||
3321 | /* Commands to show information about the task's ports. */ | |
5f515954 AB |
3322 | add_info ("send-rights", info_send_rights_cmd, |
3323 | _("Show information about the task's send rights")); | |
3324 | add_info ("receive-rights", info_recv_rights_cmd, | |
3325 | _("Show information about the task's receive rights")); | |
3326 | add_info ("port-rights", info_port_rights_cmd, | |
3327 | _("Show information about the task's port rights")); | |
3328 | add_info ("port-sets", info_port_sets_cmd, | |
3329 | _("Show information about the task's port sets")); | |
3330 | add_info ("dead-names", info_dead_names_cmd, | |
3331 | _("Show information about the task's dead names")); | |
c906108c SS |
3332 | add_info_alias ("ports", "port-rights", 1); |
3333 | add_info_alias ("port", "port-rights", 1); | |
3334 | add_info_alias ("psets", "port-sets", 1); | |
3335 | } | |
c906108c | 3336 | |
942fd805 | 3337 | \f |
c906108c | 3338 | static void |
5fed81ff | 3339 | set_thread_pause_cmd (const char *args, int from_tty) |
c906108c SS |
3340 | { |
3341 | struct proc *thread = cur_thread (); | |
3342 | int old_sc = thread->pause_sc; | |
d8734c88 | 3343 | |
c906108c SS |
3344 | thread->pause_sc = parse_bool_arg (args, "set thread pause"); |
3345 | if (old_sc == 0 && thread->pause_sc != 0 && thread->inf->pause_sc == 0) | |
3346 | /* If the task is currently unsuspended, immediately suspend it, | |
3347 | otherwise wait until the next time it gets control. */ | |
3348 | inf_suspend (thread->inf); | |
3349 | } | |
3350 | ||
3351 | static void | |
5fed81ff | 3352 | show_thread_pause_cmd (const char *args, int from_tty) |
c906108c SS |
3353 | { |
3354 | struct proc *thread = cur_thread (); | |
3355 | int sc = thread->pause_sc; | |
d8734c88 | 3356 | |
c906108c SS |
3357 | check_empty (args, "show task pause"); |
3358 | printf_unfiltered ("Thread %s %s suspended while gdb has control%s.\n", | |
3359 | proc_string (thread), | |
3360 | sc ? "is" : "isn't", | |
942fd805 | 3361 | !sc && thread->inf->pause_sc ? " (but the task is)" : ""); |
c906108c SS |
3362 | } |
3363 | ||
3364 | static void | |
5fed81ff | 3365 | set_thread_run_cmd (const char *args, int from_tty) |
c906108c SS |
3366 | { |
3367 | struct proc *thread = cur_thread (); | |
d8734c88 | 3368 | |
c906108c SS |
3369 | thread->run_sc = parse_bool_arg (args, "set thread run") ? 0 : 1; |
3370 | } | |
3371 | ||
3372 | static void | |
5fed81ff | 3373 | show_thread_run_cmd (const char *args, int from_tty) |
c906108c SS |
3374 | { |
3375 | struct proc *thread = cur_thread (); | |
d8734c88 | 3376 | |
c906108c SS |
3377 | check_empty (args, "show thread run"); |
3378 | printf_unfiltered ("Thread %s %s allowed to run.", | |
3379 | proc_string (thread), | |
3380 | thread->run_sc == 0 ? "is" : "isn't"); | |
3381 | } | |
3382 | ||
3383 | static void | |
5fed81ff | 3384 | set_thread_detach_sc_cmd (const char *args, int from_tty) |
c906108c | 3385 | { |
942fd805 MK |
3386 | cur_thread ()->detach_sc = parse_int_arg (args, |
3387 | "set thread detach-suspend-count"); | |
c906108c SS |
3388 | } |
3389 | ||
3390 | static void | |
5fed81ff | 3391 | show_thread_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
3392 | { |
3393 | struct proc *thread = cur_thread (); | |
d8734c88 | 3394 | |
c906108c | 3395 | check_empty (args, "show thread detach-suspend-count"); |
942fd805 MK |
3396 | printf_unfiltered ("Thread %s will be left with a suspend count" |
3397 | " of %d when detaching.\n", | |
c906108c SS |
3398 | proc_string (thread), |
3399 | thread->detach_sc); | |
3400 | } | |
3401 | ||
3402 | static void | |
5fed81ff | 3403 | set_thread_exc_port_cmd (const char *args, int from_tty) |
c906108c SS |
3404 | { |
3405 | struct proc *thread = cur_thread (); | |
d8734c88 | 3406 | |
c906108c | 3407 | if (!args) |
8a3fe4f8 | 3408 | error (_("No argument to \"set thread exception-port\" command.")); |
c906108c SS |
3409 | steal_exc_port (thread, parse_and_eval_address (args)); |
3410 | } | |
3411 | ||
3412 | #if 0 | |
3413 | static void | |
3414 | show_thread_cmd (char *args, int from_tty) | |
3415 | { | |
3416 | struct proc *thread = cur_thread (); | |
d8734c88 | 3417 | |
c906108c SS |
3418 | check_empty (args, "show thread"); |
3419 | show_thread_run_cmd (0, from_tty); | |
3420 | show_thread_pause_cmd (0, from_tty); | |
3421 | if (thread->detach_sc != 0) | |
3422 | show_thread_detach_sc_cmd (0, from_tty); | |
3423 | } | |
3424 | #endif | |
3425 | ||
3426 | static void | |
5fed81ff | 3427 | thread_takeover_sc_cmd (const char *args, int from_tty) |
c906108c SS |
3428 | { |
3429 | struct proc *thread = cur_thread (); | |
d8734c88 | 3430 | |
c906108c SS |
3431 | thread_basic_info_data_t _info; |
3432 | thread_basic_info_t info = &_info; | |
3433 | mach_msg_type_number_t info_len = THREAD_BASIC_INFO_COUNT; | |
cabb5f06 TS |
3434 | kern_return_t err |
3435 | = mach_thread_info (thread->port, THREAD_BASIC_INFO, | |
3436 | (int *) &info, &info_len); | |
c906108c | 3437 | if (err) |
8a3fe4f8 | 3438 | error (("%s."), safe_strerror (err)); |
c906108c SS |
3439 | thread->sc = info->suspend_count; |
3440 | if (from_tty) | |
3441 | printf_unfiltered ("Suspend count was %d.\n", thread->sc); | |
3442 | if (info != &_info) | |
942fd805 MK |
3443 | vm_deallocate (mach_task_self (), (vm_address_t) info, |
3444 | info_len * sizeof (int)); | |
c906108c SS |
3445 | } |
3446 | ||
942fd805 MK |
3447 | \f |
3448 | static void | |
3449 | add_thread_commands (void) | |
c906108c SS |
3450 | { |
3451 | add_prefix_cmd ("thread", no_class, set_thread_cmd, | |
1bedd215 | 3452 | _("Command prefix for setting thread properties."), |
c906108c SS |
3453 | &set_thread_cmd_list, "set thread ", 0, &setlist); |
3454 | add_prefix_cmd ("default", no_class, show_thread_cmd, | |
1bedd215 | 3455 | _("Command prefix for setting default thread properties."), |
c906108c SS |
3456 | &set_thread_default_cmd_list, "set thread default ", 0, |
3457 | &set_thread_cmd_list); | |
3458 | add_prefix_cmd ("thread", no_class, set_thread_default_cmd, | |
1bedd215 | 3459 | _("Command prefix for showing thread properties."), |
c906108c SS |
3460 | &show_thread_cmd_list, "show thread ", 0, &showlist); |
3461 | add_prefix_cmd ("default", no_class, show_thread_default_cmd, | |
1bedd215 | 3462 | _("Command prefix for showing default thread properties."), |
c906108c SS |
3463 | &show_thread_default_cmd_list, "show thread default ", 0, |
3464 | &show_thread_cmd_list); | |
3465 | ||
1a966eab AC |
3466 | add_cmd ("pause", class_run, set_thread_pause_cmd, _("\ |
3467 | Set whether the current thread is suspended while gdb has control.\n\ | |
942fd805 MK |
3468 | A value of \"on\" takes effect immediately, otherwise nothing happens\n\ |
3469 | until the next time the program is continued. This property normally\n\ | |
3470 | has no effect because the whole task is suspended, however, that may\n\ | |
3471 | be disabled with \"set task pause off\".\n\ | |
1a966eab | 3472 | The default value is \"off\"."), |
c906108c | 3473 | &set_thread_cmd_list); |
1a966eab AC |
3474 | add_cmd ("pause", no_class, show_thread_pause_cmd, _("\ |
3475 | Show whether the current thread is suspended while gdb has control."), | |
c906108c SS |
3476 | &show_thread_cmd_list); |
3477 | ||
3478 | add_cmd ("run", class_run, set_thread_run_cmd, | |
1a966eab | 3479 | _("Set whether the current thread is allowed to run."), |
c906108c SS |
3480 | &set_thread_cmd_list); |
3481 | add_cmd ("run", no_class, show_thread_run_cmd, | |
1a966eab | 3482 | _("Show whether the current thread is allowed to run."), |
c906108c SS |
3483 | &show_thread_cmd_list); |
3484 | ||
1a966eab AC |
3485 | add_cmd ("detach-suspend-count", class_run, set_thread_detach_sc_cmd, _("\ |
3486 | Set the suspend count will leave on the thread when detaching.\n\ | |
942fd805 | 3487 | Note that this is relative to suspend count when gdb noticed the thread;\n\ |
1a966eab | 3488 | use the `thread takeover-suspend-count' to force it to an absolute value."), |
c906108c | 3489 | &set_thread_cmd_list); |
1a966eab AC |
3490 | add_cmd ("detach-suspend-count", no_class, show_thread_detach_sc_cmd, _("\ |
3491 | Show the suspend count will leave on the thread when detaching.\n\ | |
942fd805 | 3492 | Note that this is relative to suspend count when gdb noticed the thread;\n\ |
1a966eab | 3493 | use the `thread takeover-suspend-count' to force it to an absolute value."), |
c906108c SS |
3494 | &show_thread_cmd_list); |
3495 | ||
1a966eab AC |
3496 | add_cmd ("exception-port", no_class, set_thread_exc_port_cmd, _("\ |
3497 | Set the thread exception port to which we forward exceptions.\n\ | |
942fd805 | 3498 | This overrides the task exception port.\n\ |
1a966eab | 3499 | The argument should be the value of the send right in the task."), |
c906108c SS |
3500 | &set_thread_cmd_list); |
3501 | add_alias_cmd ("excp", "exception-port", no_class, 1, &set_thread_cmd_list); | |
942fd805 MK |
3502 | add_alias_cmd ("exc-port", "exception-port", no_class, 1, |
3503 | &set_thread_cmd_list); | |
c906108c | 3504 | |
1a966eab AC |
3505 | add_cmd ("takeover-suspend-count", no_class, thread_takeover_sc_cmd, _("\ |
3506 | Force the threads absolute suspend-count to be gdb's.\n\ | |
942fd805 | 3507 | Prior to giving this command, gdb's thread suspend-counts are relative\n\ |
1a966eab | 3508 | to the thread's initial suspend-count when gdb notices the threads."), |
c906108c SS |
3509 | &thread_cmd_list); |
3510 | } | |
942fd805 | 3511 | |
c906108c | 3512 | void |
942fd805 | 3513 | _initialize_gnu_nat (void) |
c906108c SS |
3514 | { |
3515 | proc_server = getproc (); | |
942fd805 | 3516 | |
c906108c SS |
3517 | add_task_commands (); |
3518 | add_thread_commands (); | |
cbe54154 PA |
3519 | add_setshow_boolean_cmd ("gnu-nat", class_maintenance, |
3520 | &gnu_debug_flag, | |
3521 | _("Set debugging output for the gnu backend."), | |
3522 | _("Show debugging output for the gnu backend."), | |
3523 | NULL, | |
3524 | NULL, | |
3525 | NULL, | |
3526 | &setdebuglist, | |
3527 | &showdebuglist); | |
c906108c SS |
3528 | } |
3529 | \f | |
3530 | #ifdef FLUSH_INFERIOR_CACHE | |
3531 | ||
3532 | /* When over-writing code on some machines the I-Cache must be flushed | |
3533 | explicitly, because it is not kept coherent by the lazy hardware. | |
3534 | This definitely includes breakpoints, for instance, or else we | |
0963b4bd | 3535 | end up looping in mysterious Bpt traps. */ |
c906108c SS |
3536 | |
3537 | void | |
fba45db2 | 3538 | flush_inferior_icache (CORE_ADDR pc, int amount) |
c906108c SS |
3539 | { |
3540 | vm_machine_attribute_val_t flush = MATTR_VAL_ICACHE_FLUSH; | |
0947023d | 3541 | kern_return_t ret; |
c5aa993b | 3542 | |
c289427b | 3543 | ret = vm_machine_attribute (gnu_current_inf->task->port, |
c906108c SS |
3544 | pc, |
3545 | amount, | |
3546 | MATTR_CACHE, | |
3547 | &flush); | |
3548 | if (ret != KERN_SUCCESS) | |
8a3fe4f8 | 3549 | warning (_("Error flushing inferior's cache : %s"), safe_strerror (ret)); |
c906108c | 3550 | } |
c5aa993b | 3551 | #endif /* FLUSH_INFERIOR_CACHE */ |