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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" |
6c6ef69f | 72 | #include "nat/fork-inferior.h" |
c906108c | 73 | |
b4d1e8c7 | 74 | #include "inf-child.h" |
c906108c | 75 | |
21389b7f TS |
76 | /* MIG stubs are not yet ready for C++ compilation. */ |
77 | extern "C" | |
78 | { | |
c906108c SS |
79 | #include "exc_request_S.h" |
80 | #include "notify_S.h" | |
81 | #include "process_reply_S.h" | |
82 | #include "msg_reply_S.h" | |
83 | #include "exc_request_U.h" | |
84 | #include "msg_U.h" | |
21389b7f | 85 | } |
c906108c SS |
86 | |
87 | static process_t proc_server = MACH_PORT_NULL; | |
88 | ||
89 | /* If we've sent a proc_wait_request to the proc server, the pid of the | |
90 | process we asked about. We can only ever have one outstanding. */ | |
91 | int proc_wait_pid = 0; | |
92 | ||
93 | /* The number of wait requests we've sent, and expect replies from. */ | |
94 | int proc_waits_pending = 0; | |
95 | ||
96 | int gnu_debug_flag = 0; | |
97 | ||
98 | /* Forward decls */ | |
99 | ||
f04a82ef | 100 | static struct inf *make_inf (); |
c906108c SS |
101 | void inf_clear_wait (struct inf *inf); |
102 | void inf_cleanup (struct inf *inf); | |
103 | void inf_startup (struct inf *inf, int pid); | |
104 | int inf_update_suspends (struct inf *inf); | |
105 | void inf_set_pid (struct inf *inf, pid_t pid); | |
106 | void inf_validate_procs (struct inf *inf); | |
107 | void inf_steal_exc_ports (struct inf *inf); | |
108 | void inf_restore_exc_ports (struct inf *inf); | |
39efb398 AC |
109 | void inf_set_threads_resume_sc (struct inf *inf, |
110 | struct proc *run_thread, | |
111 | int run_others); | |
112 | int inf_set_threads_resume_sc_for_signal_thread (struct inf *inf); | |
113 | void inf_suspend (struct inf *inf); | |
114 | void inf_resume (struct inf *inf); | |
c906108c SS |
115 | void inf_set_step_thread (struct inf *inf, struct proc *proc); |
116 | void inf_detach (struct inf *inf); | |
117 | void inf_attach (struct inf *inf, int pid); | |
2ea28649 | 118 | void inf_signal (struct inf *inf, enum gdb_signal sig); |
cce74817 | 119 | void inf_continue (struct inf *inf); |
c906108c SS |
120 | |
121 | #define inf_debug(_inf, msg, args...) \ | |
122 | do { struct inf *__inf = (_inf); \ | |
a74ce742 PM |
123 | debug ("{inf %d %s}: " msg, __inf->pid, \ |
124 | host_address_to_string (__inf) , ##args); } while (0) | |
c906108c SS |
125 | |
126 | void proc_abort (struct proc *proc, int force); | |
c906108c SS |
127 | struct proc *make_proc (struct inf *inf, mach_port_t port, int tid); |
128 | struct proc *_proc_free (struct proc *proc); | |
129 | int proc_update_sc (struct proc *proc); | |
0947023d TS |
130 | kern_return_t proc_get_exception_port (struct proc *proc, mach_port_t * port); |
131 | kern_return_t proc_set_exception_port (struct proc *proc, mach_port_t port); | |
c906108c SS |
132 | static mach_port_t _proc_get_exc_port (struct proc *proc); |
133 | void proc_steal_exc_port (struct proc *proc, mach_port_t exc_port); | |
134 | void proc_restore_exc_port (struct proc *proc); | |
135 | int proc_trace (struct proc *proc, int set); | |
c906108c SS |
136 | |
137 | /* Evaluate RPC_EXPR in a scope with the variables MSGPORT and REFPORT bound | |
138 | to INF's msg port and task port respectively. If it has no msg port, | |
139 | EIEIO is returned. INF must refer to a running process! */ | |
140 | #define INF_MSGPORT_RPC(inf, rpc_expr) \ | |
141 | HURD_MSGPORT_RPC (proc_getmsgport (proc_server, inf->pid, &msgport), \ | |
142 | (refport = inf->task->port, 0), 0, \ | |
143 | msgport ? (rpc_expr) : EIEIO) | |
144 | ||
145 | /* Like INF_MSGPORT_RPC, but will also resume the signal thread to ensure | |
146 | there's someone around to deal with the RPC (and resuspend things | |
147 | afterwards). This effects INF's threads' resume_sc count. */ | |
148 | #define INF_RESUME_MSGPORT_RPC(inf, rpc_expr) \ | |
149 | (inf_set_threads_resume_sc_for_signal_thread (inf) \ | |
0947023d | 150 | ? ({ kern_return_t __e; \ |
c906108c SS |
151 | inf_resume (inf); \ |
152 | __e = INF_MSGPORT_RPC (inf, rpc_expr); \ | |
153 | inf_suspend (inf); \ | |
154 | __e; }) \ | |
155 | : EIEIO) | |
156 | ||
c906108c SS |
157 | \f |
158 | /* The state passed by an exception message. */ | |
159 | struct exc_state | |
c5aa993b | 160 | { |
0963b4bd | 161 | int exception; /* The exception code. */ |
c5aa993b | 162 | int code, subcode; |
0963b4bd MS |
163 | mach_port_t handler; /* The real exception port to handle this. */ |
164 | mach_port_t reply; /* The reply port from the exception call. */ | |
c5aa993b | 165 | }; |
c906108c | 166 | |
0963b4bd | 167 | /* The results of the last wait an inf did. */ |
c906108c | 168 | struct inf_wait |
c5aa993b JM |
169 | { |
170 | struct target_waitstatus status; /* The status returned to gdb. */ | |
0963b4bd | 171 | struct exc_state exc; /* The exception that caused us to return. */ |
c5aa993b JM |
172 | struct proc *thread; /* The thread in question. */ |
173 | int suppress; /* Something trivial happened. */ | |
174 | }; | |
c906108c SS |
175 | |
176 | /* The state of an inferior. */ | |
177 | struct inf | |
c5aa993b JM |
178 | { |
179 | /* Fields describing the current inferior. */ | |
c906108c | 180 | |
c5aa993b JM |
181 | struct proc *task; /* The mach task. */ |
182 | struct proc *threads; /* A linked list of all threads in TASK. */ | |
c906108c | 183 | |
0963b4bd MS |
184 | /* True if THREADS needn't be validated by querying the task. We |
185 | assume that we and the task in question are the only ones | |
186 | frobbing the thread list, so as long as we don't let any code | |
187 | run, we don't have to worry about THREADS changing. */ | |
c5aa993b | 188 | int threads_up_to_date; |
c906108c | 189 | |
0963b4bd | 190 | pid_t pid; /* The real system PID. */ |
c906108c | 191 | |
c5aa993b | 192 | struct inf_wait wait; /* What to return from target_wait. */ |
c906108c | 193 | |
0963b4bd MS |
194 | /* One thread proc in INF may be in `single-stepping mode'. This |
195 | is it. */ | |
c5aa993b | 196 | struct proc *step_thread; |
c906108c | 197 | |
c5aa993b JM |
198 | /* The thread we think is the signal thread. */ |
199 | struct proc *signal_thread; | |
c906108c | 200 | |
c5aa993b | 201 | mach_port_t event_port; /* Where we receive various msgs. */ |
c906108c | 202 | |
c5aa993b JM |
203 | /* True if we think at least one thread in the inferior could currently be |
204 | running. */ | |
205 | unsigned int running:1; | |
c906108c | 206 | |
c5aa993b JM |
207 | /* True if the process has stopped (in the proc server sense). Note that |
208 | since a proc server `stop' leaves the signal thread running, the inf can | |
209 | be RUNNING && STOPPED... */ | |
210 | unsigned int stopped:1; | |
cce74817 | 211 | |
c5aa993b JM |
212 | /* True if the inferior has no message port. */ |
213 | unsigned int nomsg:1; | |
c906108c | 214 | |
c5aa993b JM |
215 | /* True if the inferior is traced. */ |
216 | unsigned int traced:1; | |
c906108c | 217 | |
c5aa993b JM |
218 | /* True if we shouldn't try waiting for the inferior, usually because we |
219 | can't for some reason. */ | |
220 | unsigned int no_wait:1; | |
c906108c | 221 | |
c5aa993b | 222 | /* When starting a new inferior, we don't try to validate threads until all |
c82f56d9 | 223 | the proper execs have been done, which this flag states we still |
c5aa993b | 224 | expect to happen. */ |
c82f56d9 | 225 | unsigned int pending_execs:1; |
c906108c | 226 | |
0963b4bd | 227 | /* Fields describing global state. */ |
c906108c | 228 | |
c5aa993b JM |
229 | /* The task suspend count used when gdb has control. This is normally 1 to |
230 | make things easier for us, but sometimes (like when attaching to vital | |
231 | system servers) it may be desirable to let the task continue to run | |
232 | (pausing individual threads as necessary). */ | |
233 | int pause_sc; | |
c906108c | 234 | |
c5aa993b JM |
235 | /* The task suspend count left when detaching from a task. */ |
236 | int detach_sc; | |
c906108c | 237 | |
c5aa993b JM |
238 | /* The initial values used for the run_sc and pause_sc of newly discovered |
239 | threads -- see the definition of those fields in struct proc. */ | |
240 | int default_thread_run_sc; | |
241 | int default_thread_pause_sc; | |
242 | int default_thread_detach_sc; | |
c906108c | 243 | |
c5aa993b JM |
244 | /* True if the process should be traced when started/attached. Newly |
245 | started processes *must* be traced at first to exec them properly, but | |
246 | if this is false, tracing is turned off as soon it has done so. */ | |
247 | int want_signals; | |
c906108c | 248 | |
c5aa993b JM |
249 | /* True if exceptions from the inferior process should be trapped. This |
250 | must be on to use breakpoints. */ | |
251 | int want_exceptions; | |
252 | }; | |
c906108c SS |
253 | |
254 | ||
c5aa993b JM |
255 | int |
256 | __proc_pid (struct proc *proc) | |
c906108c SS |
257 | { |
258 | return proc->inf->pid; | |
259 | } | |
942fd805 | 260 | |
c906108c SS |
261 | \f |
262 | /* Update PROC's real suspend count to match it's desired one. Returns true | |
263 | if we think PROC is now in a runnable state. */ | |
264 | int | |
265 | proc_update_sc (struct proc *proc) | |
266 | { | |
267 | int running; | |
c5aa993b | 268 | int err = 0; |
c906108c SS |
269 | int delta = proc->sc - proc->cur_sc; |
270 | ||
271 | if (delta) | |
272 | proc_debug (proc, "sc: %d --> %d", proc->cur_sc, proc->sc); | |
273 | ||
274 | if (proc->sc == 0 && proc->state_changed) | |
0963b4bd | 275 | /* Since PROC may start running, we must write back any state changes. */ |
c906108c | 276 | { |
bf62e5b4 | 277 | gdb_assert (proc_is_thread (proc)); |
c906108c SS |
278 | proc_debug (proc, "storing back changed thread state"); |
279 | err = thread_set_state (proc->port, THREAD_STATE_FLAVOR, | |
f75c77fc | 280 | (thread_state_t) &proc->state, THREAD_STATE_SIZE); |
c5aa993b | 281 | if (!err) |
c906108c SS |
282 | proc->state_changed = 0; |
283 | } | |
284 | ||
285 | if (delta > 0) | |
942fd805 MK |
286 | { |
287 | while (delta-- > 0 && !err) | |
288 | { | |
289 | if (proc_is_task (proc)) | |
290 | err = task_suspend (proc->port); | |
291 | else | |
292 | err = thread_suspend (proc->port); | |
293 | } | |
294 | } | |
c906108c | 295 | else |
942fd805 MK |
296 | { |
297 | while (delta++ < 0 && !err) | |
298 | { | |
299 | if (proc_is_task (proc)) | |
300 | err = task_resume (proc->port); | |
301 | else | |
302 | err = thread_resume (proc->port); | |
303 | } | |
304 | } | |
c5aa993b | 305 | if (!err) |
c906108c SS |
306 | proc->cur_sc = proc->sc; |
307 | ||
308 | /* If we got an error, then the task/thread has disappeared. */ | |
309 | running = !err && proc->sc == 0; | |
310 | ||
311 | proc_debug (proc, "is %s", err ? "dead" : running ? "running" : "suspended"); | |
312 | if (err) | |
dc672865 | 313 | proc_debug (proc, "err = %s", safe_strerror (err)); |
c906108c SS |
314 | |
315 | if (running) | |
316 | { | |
317 | proc->aborted = 0; | |
318 | proc->state_valid = proc->state_changed = 0; | |
319 | proc->fetched_regs = 0; | |
320 | } | |
321 | ||
322 | return running; | |
323 | } | |
942fd805 | 324 | |
c906108c SS |
325 | \f |
326 | /* Thread_abort is called on PROC if needed. PROC must be a thread proc. | |
327 | If PROC is deemed `precious', then nothing is done unless FORCE is true. | |
328 | In particular, a thread is precious if it's running (in which case forcing | |
329 | it includes suspending it first), or if it has an exception pending. */ | |
330 | void | |
331 | proc_abort (struct proc *proc, int force) | |
332 | { | |
bf62e5b4 | 333 | gdb_assert (proc_is_thread (proc)); |
c906108c | 334 | |
c5aa993b | 335 | if (!proc->aborted) |
c906108c SS |
336 | { |
337 | struct inf *inf = proc->inf; | |
338 | int running = (proc->cur_sc == 0 && inf->task->cur_sc == 0); | |
339 | ||
340 | if (running && force) | |
341 | { | |
342 | proc->sc = 1; | |
343 | inf_update_suspends (proc->inf); | |
344 | running = 0; | |
8a3fe4f8 | 345 | warning (_("Stopped %s."), proc_string (proc)); |
c906108c SS |
346 | } |
347 | else if (proc == inf->wait.thread && inf->wait.exc.reply && !force) | |
348 | /* An exception is pending on PROC, which don't mess with. */ | |
349 | running = 1; | |
350 | ||
c5aa993b | 351 | if (!running) |
c906108c SS |
352 | /* We only abort the thread if it's not actually running. */ |
353 | { | |
354 | thread_abort (proc->port); | |
355 | proc_debug (proc, "aborted"); | |
356 | proc->aborted = 1; | |
357 | } | |
358 | else | |
359 | proc_debug (proc, "not aborting"); | |
360 | } | |
361 | } | |
362 | ||
363 | /* Make sure that the state field in PROC is up to date, and return a pointer | |
364 | to it, or 0 if something is wrong. If WILL_MODIFY is true, makes sure | |
365 | that the thread is stopped and aborted first, and sets the state_changed | |
366 | field in PROC to true. */ | |
367 | thread_state_t | |
368 | proc_get_state (struct proc *proc, int will_modify) | |
369 | { | |
370 | int was_aborted = proc->aborted; | |
371 | ||
372 | proc_debug (proc, "updating state info%s", | |
373 | will_modify ? " (with intention to modify)" : ""); | |
374 | ||
375 | proc_abort (proc, will_modify); | |
376 | ||
c5aa993b | 377 | if (!was_aborted && proc->aborted) |
c906108c SS |
378 | /* PROC's state may have changed since we last fetched it. */ |
379 | proc->state_valid = 0; | |
380 | ||
c5aa993b | 381 | if (!proc->state_valid) |
c906108c SS |
382 | { |
383 | mach_msg_type_number_t state_size = THREAD_STATE_SIZE; | |
0947023d | 384 | kern_return_t err = |
d8734c88 MS |
385 | thread_get_state (proc->port, THREAD_STATE_FLAVOR, |
386 | (thread_state_t) &proc->state, &state_size); | |
387 | ||
c906108c SS |
388 | proc_debug (proc, "getting thread state"); |
389 | proc->state_valid = !err; | |
390 | } | |
391 | ||
392 | if (proc->state_valid) | |
393 | { | |
394 | if (will_modify) | |
395 | proc->state_changed = 1; | |
f75c77fc | 396 | return (thread_state_t) &proc->state; |
c906108c SS |
397 | } |
398 | else | |
399 | return 0; | |
400 | } | |
942fd805 | 401 | |
c906108c SS |
402 | \f |
403 | /* Set PORT to PROC's exception port. */ | |
0947023d | 404 | kern_return_t |
c5aa993b | 405 | proc_get_exception_port (struct proc * proc, mach_port_t * port) |
c906108c SS |
406 | { |
407 | if (proc_is_task (proc)) | |
408 | return task_get_exception_port (proc->port, port); | |
409 | else | |
410 | return thread_get_exception_port (proc->port, port); | |
411 | } | |
412 | ||
413 | /* Set PROC's exception port to PORT. */ | |
0947023d | 414 | kern_return_t |
c5aa993b | 415 | proc_set_exception_port (struct proc * proc, mach_port_t port) |
c906108c | 416 | { |
a9a758e3 | 417 | proc_debug (proc, "setting exception port: %lu", port); |
c906108c SS |
418 | if (proc_is_task (proc)) |
419 | return task_set_exception_port (proc->port, port); | |
420 | else | |
421 | return thread_set_exception_port (proc->port, port); | |
422 | } | |
423 | ||
424 | /* Get PROC's exception port, cleaning up a bit if proc has died. */ | |
425 | static mach_port_t | |
426 | _proc_get_exc_port (struct proc *proc) | |
427 | { | |
428 | mach_port_t exc_port; | |
0947023d | 429 | kern_return_t err = proc_get_exception_port (proc, &exc_port); |
c906108c SS |
430 | |
431 | if (err) | |
432 | /* PROC must be dead. */ | |
433 | { | |
434 | if (proc->exc_port) | |
435 | mach_port_deallocate (mach_task_self (), proc->exc_port); | |
436 | proc->exc_port = MACH_PORT_NULL; | |
437 | if (proc->saved_exc_port) | |
438 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
439 | proc->saved_exc_port = MACH_PORT_NULL; | |
440 | } | |
441 | ||
442 | return exc_port; | |
443 | } | |
444 | ||
0963b4bd MS |
445 | /* Replace PROC's exception port with EXC_PORT, unless it's already |
446 | been done. Stash away any existing exception port so we can | |
447 | restore it later. */ | |
c906108c SS |
448 | void |
449 | proc_steal_exc_port (struct proc *proc, mach_port_t exc_port) | |
450 | { | |
451 | mach_port_t cur_exc_port = _proc_get_exc_port (proc); | |
452 | ||
453 | if (cur_exc_port) | |
454 | { | |
0947023d | 455 | kern_return_t err = 0; |
c906108c | 456 | |
a9a758e3 | 457 | proc_debug (proc, "inserting exception port: %lu", exc_port); |
c906108c SS |
458 | |
459 | if (cur_exc_port != exc_port) | |
460 | /* Put in our exception port. */ | |
461 | err = proc_set_exception_port (proc, exc_port); | |
462 | ||
463 | if (err || cur_exc_port == proc->exc_port) | |
464 | /* We previously set the exception port, and it's still set. So we | |
465 | just keep the old saved port which is what the proc set. */ | |
466 | { | |
467 | if (cur_exc_port) | |
468 | mach_port_deallocate (mach_task_self (), cur_exc_port); | |
469 | } | |
470 | else | |
0963b4bd | 471 | /* Keep a copy of PROC's old exception port so it can be restored. */ |
c906108c SS |
472 | { |
473 | if (proc->saved_exc_port) | |
474 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
475 | proc->saved_exc_port = cur_exc_port; | |
476 | } | |
477 | ||
a9a758e3 | 478 | proc_debug (proc, "saved exception port: %lu", proc->saved_exc_port); |
c906108c SS |
479 | |
480 | if (!err) | |
481 | proc->exc_port = exc_port; | |
482 | else | |
8a3fe4f8 | 483 | warning (_("Error setting exception port for %s: %s"), |
dc672865 | 484 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
485 | } |
486 | } | |
487 | ||
488 | /* If we previously replaced PROC's exception port, put back what we | |
489 | found there at the time, unless *our* exception port has since been | |
490 | overwritten, in which case who knows what's going on. */ | |
491 | void | |
492 | proc_restore_exc_port (struct proc *proc) | |
493 | { | |
494 | mach_port_t cur_exc_port = _proc_get_exc_port (proc); | |
495 | ||
496 | if (cur_exc_port) | |
497 | { | |
0947023d | 498 | kern_return_t err = 0; |
c906108c SS |
499 | |
500 | proc_debug (proc, "restoring real exception port"); | |
501 | ||
502 | if (proc->exc_port == cur_exc_port) | |
503 | /* Our's is still there. */ | |
504 | err = proc_set_exception_port (proc, proc->saved_exc_port); | |
505 | ||
506 | if (proc->saved_exc_port) | |
507 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
508 | proc->saved_exc_port = MACH_PORT_NULL; | |
509 | ||
510 | if (!err) | |
511 | proc->exc_port = MACH_PORT_NULL; | |
512 | else | |
8a3fe4f8 | 513 | warning (_("Error setting exception port for %s: %s"), |
dc672865 | 514 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
515 | } |
516 | } | |
942fd805 | 517 | |
c906108c SS |
518 | \f |
519 | /* Turns hardware tracing in PROC on or off when SET is true or false, | |
520 | respectively. Returns true on success. */ | |
521 | int | |
522 | proc_trace (struct proc *proc, int set) | |
523 | { | |
524 | thread_state_t state = proc_get_state (proc, 1); | |
525 | ||
c5aa993b | 526 | if (!state) |
0963b4bd | 527 | return 0; /* The thread must be dead. */ |
c906108c SS |
528 | |
529 | proc_debug (proc, "tracing %s", set ? "on" : "off"); | |
c5aa993b | 530 | |
c906108c SS |
531 | if (set) |
532 | { | |
533 | /* XXX We don't get the exception unless the thread has its own | |
0963b4bd | 534 | exception port???? */ |
c906108c SS |
535 | if (proc->exc_port == MACH_PORT_NULL) |
536 | proc_steal_exc_port (proc, proc->inf->event_port); | |
537 | THREAD_STATE_SET_TRACED (state); | |
538 | } | |
539 | else | |
540 | THREAD_STATE_CLEAR_TRACED (state); | |
541 | ||
542 | return 1; | |
543 | } | |
942fd805 | 544 | |
c906108c SS |
545 | \f |
546 | /* A variable from which to assign new TIDs. */ | |
547 | static int next_thread_id = 1; | |
548 | ||
549 | /* Returns a new proc structure with the given fields. Also adds a | |
550 | notification for PORT becoming dead to be sent to INF's notify port. */ | |
551 | struct proc * | |
552 | make_proc (struct inf *inf, mach_port_t port, int tid) | |
553 | { | |
0947023d | 554 | kern_return_t err; |
c906108c | 555 | mach_port_t prev_port = MACH_PORT_NULL; |
8d749320 | 556 | struct proc *proc = XNEW (struct proc); |
c906108c SS |
557 | |
558 | proc->port = port; | |
559 | proc->tid = tid; | |
560 | proc->inf = inf; | |
561 | proc->next = 0; | |
562 | proc->saved_exc_port = MACH_PORT_NULL; | |
563 | proc->exc_port = MACH_PORT_NULL; | |
564 | ||
565 | proc->sc = 0; | |
566 | proc->cur_sc = 0; | |
567 | ||
568 | /* Note that these are all the values for threads; the task simply uses the | |
569 | corresponding field in INF directly. */ | |
570 | proc->run_sc = inf->default_thread_run_sc; | |
571 | proc->pause_sc = inf->default_thread_pause_sc; | |
572 | proc->detach_sc = inf->default_thread_detach_sc; | |
573 | proc->resume_sc = proc->run_sc; | |
574 | ||
575 | proc->aborted = 0; | |
576 | proc->dead = 0; | |
577 | proc->state_valid = 0; | |
578 | proc->state_changed = 0; | |
579 | ||
580 | proc_debug (proc, "is new"); | |
581 | ||
582 | /* Get notified when things die. */ | |
583 | err = | |
c5aa993b | 584 | mach_port_request_notification (mach_task_self (), port, |
c906108c SS |
585 | MACH_NOTIFY_DEAD_NAME, 1, |
586 | inf->event_port, | |
587 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
588 | &prev_port); | |
589 | if (err) | |
a9a758e3 | 590 | warning (_("Couldn't request notification for port %lu: %s"), |
dc672865 | 591 | port, safe_strerror (err)); |
c906108c SS |
592 | else |
593 | { | |
a9a758e3 | 594 | proc_debug (proc, "notifications to: %lu", inf->event_port); |
c906108c SS |
595 | if (prev_port != MACH_PORT_NULL) |
596 | mach_port_deallocate (mach_task_self (), prev_port); | |
597 | } | |
598 | ||
599 | if (inf->want_exceptions) | |
942fd805 MK |
600 | { |
601 | if (proc_is_task (proc)) | |
602 | /* Make the task exception port point to us. */ | |
603 | proc_steal_exc_port (proc, inf->event_port); | |
604 | else | |
605 | /* Just clear thread exception ports -- they default to the | |
606 | task one. */ | |
607 | proc_steal_exc_port (proc, MACH_PORT_NULL); | |
608 | } | |
c906108c SS |
609 | |
610 | return proc; | |
611 | } | |
612 | ||
613 | /* Frees PROC and any resources it uses, and returns the value of PROC's | |
614 | next field. */ | |
615 | struct proc * | |
616 | _proc_free (struct proc *proc) | |
617 | { | |
618 | struct inf *inf = proc->inf; | |
619 | struct proc *next = proc->next; | |
620 | ||
621 | proc_debug (proc, "freeing..."); | |
622 | ||
623 | if (proc == inf->step_thread) | |
624 | /* Turn off single stepping. */ | |
625 | inf_set_step_thread (inf, 0); | |
626 | if (proc == inf->wait.thread) | |
627 | inf_clear_wait (inf); | |
628 | if (proc == inf->signal_thread) | |
629 | inf->signal_thread = 0; | |
630 | ||
631 | if (proc->port != MACH_PORT_NULL) | |
632 | { | |
633 | if (proc->exc_port != MACH_PORT_NULL) | |
634 | /* Restore the original exception port. */ | |
635 | proc_restore_exc_port (proc); | |
636 | if (proc->cur_sc != 0) | |
637 | /* Resume the thread/task. */ | |
638 | { | |
639 | proc->sc = 0; | |
640 | proc_update_sc (proc); | |
641 | } | |
642 | mach_port_deallocate (mach_task_self (), proc->port); | |
643 | } | |
644 | ||
b8c9b27d | 645 | xfree (proc); |
c906108c SS |
646 | return next; |
647 | } | |
942fd805 | 648 | |
c906108c | 649 | \f |
f04a82ef | 650 | static struct inf * |
fba45db2 | 651 | make_inf (void) |
c906108c | 652 | { |
8d749320 | 653 | struct inf *inf = XNEW (struct inf); |
c906108c SS |
654 | |
655 | inf->task = 0; | |
656 | inf->threads = 0; | |
657 | inf->threads_up_to_date = 0; | |
658 | inf->pid = 0; | |
659 | inf->wait.status.kind = TARGET_WAITKIND_SPURIOUS; | |
660 | inf->wait.thread = 0; | |
661 | inf->wait.exc.handler = MACH_PORT_NULL; | |
662 | inf->wait.exc.reply = MACH_PORT_NULL; | |
663 | inf->step_thread = 0; | |
664 | inf->signal_thread = 0; | |
665 | inf->event_port = MACH_PORT_NULL; | |
c906108c | 666 | inf->running = 0; |
cce74817 JM |
667 | inf->stopped = 0; |
668 | inf->nomsg = 1; | |
c906108c SS |
669 | inf->traced = 0; |
670 | inf->no_wait = 0; | |
671 | inf->pending_execs = 0; | |
672 | inf->pause_sc = 1; | |
673 | inf->detach_sc = 0; | |
674 | inf->default_thread_run_sc = 0; | |
675 | inf->default_thread_pause_sc = 0; | |
676 | inf->default_thread_detach_sc = 0; | |
677 | inf->want_signals = 1; /* By default */ | |
678 | inf->want_exceptions = 1; /* By default */ | |
679 | ||
680 | return inf; | |
681 | } | |
682 | ||
942fd805 | 683 | /* Clear INF's target wait status. */ |
c906108c SS |
684 | void |
685 | inf_clear_wait (struct inf *inf) | |
686 | { | |
687 | inf_debug (inf, "clearing wait"); | |
688 | inf->wait.status.kind = TARGET_WAITKIND_SPURIOUS; | |
689 | inf->wait.thread = 0; | |
690 | inf->wait.suppress = 0; | |
691 | if (inf->wait.exc.handler != MACH_PORT_NULL) | |
692 | { | |
693 | mach_port_deallocate (mach_task_self (), inf->wait.exc.handler); | |
694 | inf->wait.exc.handler = MACH_PORT_NULL; | |
695 | } | |
696 | if (inf->wait.exc.reply != MACH_PORT_NULL) | |
697 | { | |
698 | mach_port_deallocate (mach_task_self (), inf->wait.exc.reply); | |
699 | inf->wait.exc.reply = MACH_PORT_NULL; | |
700 | } | |
701 | } | |
942fd805 | 702 | |
c906108c SS |
703 | \f |
704 | void | |
705 | inf_cleanup (struct inf *inf) | |
706 | { | |
707 | inf_debug (inf, "cleanup"); | |
708 | ||
709 | inf_clear_wait (inf); | |
710 | ||
711 | inf_set_pid (inf, -1); | |
712 | inf->pid = 0; | |
cce74817 JM |
713 | inf->running = 0; |
714 | inf->stopped = 0; | |
715 | inf->nomsg = 1; | |
c906108c SS |
716 | inf->traced = 0; |
717 | inf->no_wait = 0; | |
c906108c SS |
718 | inf->pending_execs = 0; |
719 | ||
720 | if (inf->event_port) | |
721 | { | |
722 | mach_port_destroy (mach_task_self (), inf->event_port); | |
723 | inf->event_port = MACH_PORT_NULL; | |
724 | } | |
725 | } | |
726 | ||
727 | void | |
728 | inf_startup (struct inf *inf, int pid) | |
729 | { | |
0947023d | 730 | kern_return_t err; |
c906108c SS |
731 | |
732 | inf_debug (inf, "startup: pid = %d", pid); | |
733 | ||
734 | inf_cleanup (inf); | |
735 | ||
736 | /* Make the port on which we receive all events. */ | |
737 | err = mach_port_allocate (mach_task_self (), | |
738 | MACH_PORT_RIGHT_RECEIVE, &inf->event_port); | |
739 | if (err) | |
8a3fe4f8 | 740 | error (_("Error allocating event port: %s"), safe_strerror (err)); |
c906108c SS |
741 | |
742 | /* Make a send right for it, so we can easily copy it for other people. */ | |
743 | mach_port_insert_right (mach_task_self (), inf->event_port, | |
744 | inf->event_port, MACH_MSG_TYPE_MAKE_SEND); | |
745 | inf_set_pid (inf, pid); | |
746 | } | |
942fd805 | 747 | |
c906108c | 748 | \f |
942fd805 | 749 | /* Close current process, if any, and attach INF to process PORT. */ |
c5aa993b | 750 | void |
c906108c SS |
751 | inf_set_pid (struct inf *inf, pid_t pid) |
752 | { | |
753 | task_t task_port; | |
754 | struct proc *task = inf->task; | |
755 | ||
756 | inf_debug (inf, "setting pid: %d", pid); | |
757 | ||
758 | if (pid < 0) | |
759 | task_port = MACH_PORT_NULL; | |
760 | else | |
761 | { | |
0947023d | 762 | kern_return_t err = proc_pid2task (proc_server, pid, &task_port); |
d8734c88 | 763 | |
c906108c | 764 | if (err) |
0963b4bd MS |
765 | error (_("Error getting task for pid %d: %s"), |
766 | pid, safe_strerror (err)); | |
c906108c SS |
767 | } |
768 | ||
a9a758e3 | 769 | inf_debug (inf, "setting task: %lu", task_port); |
c906108c SS |
770 | |
771 | if (inf->pause_sc) | |
772 | task_suspend (task_port); | |
773 | ||
774 | if (task && task->port != task_port) | |
775 | { | |
776 | inf->task = 0; | |
0963b4bd MS |
777 | inf_validate_procs (inf); /* Trash all the threads. */ |
778 | _proc_free (task); /* And the task. */ | |
c906108c SS |
779 | } |
780 | ||
781 | if (task_port != MACH_PORT_NULL) | |
782 | { | |
783 | inf->task = make_proc (inf, task_port, PROC_TID_TASK); | |
784 | inf->threads_up_to_date = 0; | |
785 | } | |
786 | ||
787 | if (inf->task) | |
788 | { | |
789 | inf->pid = pid; | |
790 | if (inf->pause_sc) | |
942fd805 MK |
791 | /* Reflect task_suspend above. */ |
792 | inf->task->sc = inf->task->cur_sc = 1; | |
c906108c SS |
793 | } |
794 | else | |
795 | inf->pid = -1; | |
796 | } | |
942fd805 | 797 | |
c906108c | 798 | \f |
cce74817 JM |
799 | /* Validates INF's stopped, nomsg and traced field from the actual |
800 | proc server state. Note that the traced field is only updated from | |
801 | the proc server state if we do not have a message port. If we do | |
802 | have a message port we'd better look at the tracemask itself. */ | |
c906108c | 803 | static void |
cce74817 | 804 | inf_validate_procinfo (struct inf *inf) |
c906108c SS |
805 | { |
806 | char *noise; | |
807 | mach_msg_type_number_t noise_len = 0; | |
808 | struct procinfo *pi; | |
809 | mach_msg_type_number_t pi_len = 0; | |
810 | int info_flags = 0; | |
0947023d | 811 | kern_return_t err = |
d8734c88 MS |
812 | proc_getprocinfo (proc_server, inf->pid, &info_flags, |
813 | (procinfo_t *) &pi, &pi_len, &noise, &noise_len); | |
c906108c | 814 | |
c5aa993b | 815 | if (!err) |
c906108c SS |
816 | { |
817 | inf->stopped = !!(pi->state & PI_STOPPED); | |
cce74817 JM |
818 | inf->nomsg = !!(pi->state & PI_NOMSG); |
819 | if (inf->nomsg) | |
820 | inf->traced = !!(pi->state & PI_TRACED); | |
a441dfbc ST |
821 | vm_deallocate (mach_task_self (), (vm_address_t) pi, |
822 | pi_len * sizeof (*(procinfo_t) 0)); | |
c906108c | 823 | if (noise_len > 0) |
c5aa993b | 824 | vm_deallocate (mach_task_self (), (vm_address_t) noise, noise_len); |
c906108c SS |
825 | } |
826 | } | |
827 | ||
f90b2b1d JK |
828 | /* Validates INF's task suspend count. If it's higher than we expect, |
829 | verify with the user before `stealing' the extra count. */ | |
c906108c SS |
830 | static void |
831 | inf_validate_task_sc (struct inf *inf) | |
832 | { | |
f90b2b1d JK |
833 | char *noise; |
834 | mach_msg_type_number_t noise_len = 0; | |
835 | struct procinfo *pi; | |
836 | mach_msg_type_number_t pi_len = 0; | |
837 | int info_flags = PI_FETCH_TASKINFO; | |
838 | int suspend_count = -1; | |
0947023d | 839 | kern_return_t err; |
c906108c | 840 | |
f90b2b1d JK |
841 | retry: |
842 | err = proc_getprocinfo (proc_server, inf->pid, &info_flags, | |
942fd805 | 843 | (procinfo_t *) &pi, &pi_len, &noise, &noise_len); |
c906108c | 844 | if (err) |
f90b2b1d JK |
845 | { |
846 | inf->task->dead = 1; /* oh well */ | |
847 | return; | |
848 | } | |
849 | ||
850 | if (inf->task->cur_sc < pi->taskinfo.suspend_count && suspend_count == -1) | |
851 | { | |
852 | /* The proc server might have suspended the task while stopping | |
853 | it. This happens when the task is handling a traced signal. | |
854 | Refetch the suspend count. The proc server should be | |
855 | finished stopping the task by now. */ | |
856 | suspend_count = pi->taskinfo.suspend_count; | |
857 | goto retry; | |
858 | } | |
859 | ||
860 | suspend_count = pi->taskinfo.suspend_count; | |
861 | ||
a441dfbc ST |
862 | vm_deallocate (mach_task_self (), (vm_address_t) pi, |
863 | pi_len * sizeof (*(procinfo_t) 0)); | |
f90b2b1d | 864 | if (noise_len > 0) |
a441dfbc | 865 | vm_deallocate (mach_task_self (), (vm_address_t) noise, noise_len); |
f90b2b1d JK |
866 | |
867 | if (inf->task->cur_sc < suspend_count) | |
c906108c | 868 | { |
651ce16a PA |
869 | if (!query (_("Pid %d has an additional task suspend count of %d;" |
870 | " clear it? "), inf->pid, | |
871 | suspend_count - inf->task->cur_sc)) | |
8a3fe4f8 | 872 | error (_("Additional task suspend count left untouched.")); |
c906108c | 873 | |
f90b2b1d | 874 | inf->task->cur_sc = suspend_count; |
c906108c SS |
875 | } |
876 | } | |
877 | ||
942fd805 MK |
878 | /* Turns tracing for INF on or off, depending on ON, unless it already |
879 | is. If INF is running, the resume_sc count of INF's threads will | |
880 | be modified, and the signal thread will briefly be run to change | |
881 | the trace state. */ | |
f04a82ef | 882 | static void |
c906108c SS |
883 | inf_set_traced (struct inf *inf, int on) |
884 | { | |
942fd805 MK |
885 | if (on == inf->traced) |
886 | return; | |
887 | ||
888 | if (inf->task && !inf->task->dead) | |
889 | /* Make it take effect immediately. */ | |
890 | { | |
891 | sigset_t mask = on ? ~(sigset_t) 0 : 0; | |
0947023d | 892 | kern_return_t err = |
c5aa993b | 893 | INF_RESUME_MSGPORT_RPC (inf, msg_set_init_int (msgport, refport, |
942fd805 | 894 | INIT_TRACEMASK, mask)); |
d8734c88 | 895 | |
942fd805 MK |
896 | if (err == EIEIO) |
897 | { | |
898 | if (on) | |
8a3fe4f8 | 899 | warning (_("Can't modify tracing state for pid %d: %s"), |
942fd805 | 900 | inf->pid, "No signal thread"); |
c906108c | 901 | inf->traced = on; |
942fd805 MK |
902 | } |
903 | else if (err) | |
8a3fe4f8 | 904 | warning (_("Can't modify tracing state for pid %d: %s"), |
dc672865 | 905 | inf->pid, safe_strerror (err)); |
942fd805 MK |
906 | else |
907 | inf->traced = on; | |
908 | } | |
909 | else | |
910 | inf->traced = on; | |
c906108c | 911 | } |
942fd805 | 912 | |
c906108c | 913 | \f |
942fd805 MK |
914 | /* Makes all the real suspend count deltas of all the procs in INF |
915 | match the desired values. Careful to always do thread/task suspend | |
916 | counts in the safe order. Returns true if at least one thread is | |
0963b4bd | 917 | thought to be running. */ |
c906108c SS |
918 | int |
919 | inf_update_suspends (struct inf *inf) | |
920 | { | |
921 | struct proc *task = inf->task; | |
d8734c88 | 922 | |
c906108c SS |
923 | /* We don't have to update INF->threads even though we're iterating over it |
924 | because we'll change a thread only if it already has an existing proc | |
925 | entry. */ | |
c906108c SS |
926 | inf_debug (inf, "updating suspend counts"); |
927 | ||
928 | if (task) | |
929 | { | |
930 | struct proc *thread; | |
931 | int task_running = (task->sc == 0), thread_running = 0; | |
932 | ||
933 | if (task->sc > task->cur_sc) | |
934 | /* The task is becoming _more_ suspended; do before any threads. */ | |
935 | task_running = proc_update_sc (task); | |
936 | ||
937 | if (inf->pending_execs) | |
938 | /* When we're waiting for an exec, things may be happening behind our | |
939 | back, so be conservative. */ | |
940 | thread_running = 1; | |
941 | ||
942 | /* Do all the thread suspend counts. */ | |
943 | for (thread = inf->threads; thread; thread = thread->next) | |
944 | thread_running |= proc_update_sc (thread); | |
945 | ||
946 | if (task->sc != task->cur_sc) | |
947 | /* We didn't do the task first, because we wanted to wait for the | |
948 | threads; do it now. */ | |
949 | task_running = proc_update_sc (task); | |
950 | ||
951 | inf_debug (inf, "%srunning...", | |
952 | (thread_running && task_running) ? "" : "not "); | |
953 | ||
954 | inf->running = thread_running && task_running; | |
955 | ||
956 | /* Once any thread has executed some code, we can't depend on the | |
c5aa993b | 957 | threads list any more. */ |
c906108c SS |
958 | if (inf->running) |
959 | inf->threads_up_to_date = 0; | |
960 | ||
961 | return inf->running; | |
962 | } | |
963 | ||
964 | return 0; | |
965 | } | |
942fd805 | 966 | |
c906108c SS |
967 | \f |
968 | /* Converts a GDB pid to a struct proc. */ | |
969 | struct proc * | |
970 | inf_tid_to_thread (struct inf *inf, int tid) | |
971 | { | |
972 | struct proc *thread = inf->threads; | |
973 | ||
974 | while (thread) | |
975 | if (thread->tid == tid) | |
976 | return thread; | |
977 | else | |
978 | thread = thread->next; | |
979 | return 0; | |
980 | } | |
981 | ||
982 | /* Converts a thread port to a struct proc. */ | |
f04a82ef | 983 | static struct proc * |
c906108c SS |
984 | inf_port_to_thread (struct inf *inf, mach_port_t port) |
985 | { | |
986 | struct proc *thread = inf->threads; | |
d8734c88 | 987 | |
c906108c SS |
988 | while (thread) |
989 | if (thread->port == port) | |
990 | return thread; | |
991 | else | |
992 | thread = thread->next; | |
993 | return 0; | |
994 | } | |
942fd805 | 995 | |
05db5edd ST |
996 | /* See gnu-nat.h. */ |
997 | ||
998 | void | |
999 | inf_threads (struct inf *inf, inf_threads_ftype *f, void *arg) | |
1000 | { | |
1001 | struct proc *thread; | |
1002 | ||
1003 | for (thread = inf->threads; thread; thread = thread->next) | |
1004 | f (thread, arg); | |
1005 | } | |
1006 | ||
c906108c SS |
1007 | \f |
1008 | /* Make INF's list of threads be consistent with reality of TASK. */ | |
1009 | void | |
1010 | inf_validate_procs (struct inf *inf) | |
1011 | { | |
c906108c | 1012 | thread_array_t threads; |
942fd805 | 1013 | mach_msg_type_number_t num_threads, i; |
c906108c SS |
1014 | struct proc *task = inf->task; |
1015 | ||
1016 | /* If no threads are currently running, this function will guarantee that | |
1017 | things are up to date. The exception is if there are zero threads -- | |
1018 | then it is almost certainly in an odd state, and probably some outside | |
1019 | agent will create threads. */ | |
1020 | inf->threads_up_to_date = inf->threads ? !inf->running : 0; | |
1021 | ||
1022 | if (task) | |
1023 | { | |
0947023d | 1024 | kern_return_t err = task_threads (task->port, &threads, &num_threads); |
d8734c88 | 1025 | |
c906108c SS |
1026 | inf_debug (inf, "fetching threads"); |
1027 | if (err) | |
1028 | /* TASK must be dead. */ | |
1029 | { | |
1030 | task->dead = 1; | |
1031 | task = 0; | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | if (!task) | |
1036 | { | |
1037 | num_threads = 0; | |
1038 | inf_debug (inf, "no task"); | |
1039 | } | |
1040 | ||
1041 | { | |
942fd805 MK |
1042 | /* Make things normally linear. */ |
1043 | mach_msg_type_number_t search_start = 0; | |
c906108c SS |
1044 | /* Which thread in PROCS corresponds to each task thread, & the task. */ |
1045 | struct proc *matched[num_threads + 1]; | |
1046 | /* The last thread in INF->threads, so we can add to the end. */ | |
1047 | struct proc *last = 0; | |
0963b4bd | 1048 | /* The current thread we're considering. */ |
c906108c SS |
1049 | struct proc *thread = inf->threads; |
1050 | ||
4deab737 | 1051 | memset (matched, 0, sizeof (matched)); |
c906108c SS |
1052 | |
1053 | while (thread) | |
1054 | { | |
942fd805 | 1055 | mach_msg_type_number_t left; |
c906108c SS |
1056 | |
1057 | for (i = search_start, left = num_threads; left; i++, left--) | |
1058 | { | |
1059 | if (i >= num_threads) | |
c5aa993b | 1060 | i -= num_threads; /* I wrapped around. */ |
c906108c SS |
1061 | if (thread->port == threads[i]) |
1062 | /* We already know about this thread. */ | |
1063 | { | |
1064 | matched[i] = thread; | |
1065 | last = thread; | |
1066 | thread = thread->next; | |
1067 | search_start++; | |
1068 | break; | |
1069 | } | |
1070 | } | |
1071 | ||
c5aa993b | 1072 | if (!left) |
c906108c SS |
1073 | { |
1074 | proc_debug (thread, "died!"); | |
1075 | thread->port = MACH_PORT_NULL; | |
c5aa993b | 1076 | thread = _proc_free (thread); /* THREAD is dead. */ |
c4c50d37 DJ |
1077 | if (last) |
1078 | last->next = thread; | |
1079 | else | |
1080 | inf->threads = thread; | |
c906108c SS |
1081 | } |
1082 | } | |
1083 | ||
1084 | for (i = 0; i < num_threads; i++) | |
942fd805 MK |
1085 | { |
1086 | if (matched[i]) | |
1087 | /* Throw away the duplicate send right. */ | |
1088 | mach_port_deallocate (mach_task_self (), threads[i]); | |
1089 | else | |
1090 | /* THREADS[I] is a thread we don't know about yet! */ | |
1091 | { | |
617fd3b5 PA |
1092 | ptid_t ptid; |
1093 | ||
942fd805 | 1094 | thread = make_proc (inf, threads[i], next_thread_id++); |
c4c50d37 DJ |
1095 | if (last) |
1096 | last->next = thread; | |
1097 | else | |
1098 | inf->threads = thread; | |
942fd805 | 1099 | last = thread; |
a9a758e3 | 1100 | proc_debug (thread, "new thread: %lu", threads[i]); |
617fd3b5 | 1101 | |
fd79271b | 1102 | ptid = ptid_t (inf->pid, thread->tid, 0); |
617fd3b5 PA |
1103 | |
1104 | /* Tell GDB's generic thread code. */ | |
1105 | ||
d7e15655 | 1106 | if (inferior_ptid == ptid_t (inf->pid)) |
617fd3b5 PA |
1107 | /* This is the first time we're hearing about thread |
1108 | ids, after a fork-child. */ | |
1109 | thread_change_ptid (inferior_ptid, ptid); | |
1110 | else if (inf->pending_execs != 0) | |
1111 | /* This is a shell thread. */ | |
1112 | add_thread_silent (ptid); | |
1113 | else | |
1114 | add_thread (ptid); | |
942fd805 MK |
1115 | } |
1116 | } | |
c906108c | 1117 | |
c5aa993b | 1118 | vm_deallocate (mach_task_self (), |
942fd805 | 1119 | (vm_address_t) threads, (num_threads * sizeof (thread_t))); |
c906108c SS |
1120 | } |
1121 | } | |
942fd805 | 1122 | |
c906108c SS |
1123 | \f |
1124 | /* Makes sure that INF's thread list is synced with the actual process. */ | |
39efb398 | 1125 | int |
c906108c SS |
1126 | inf_update_procs (struct inf *inf) |
1127 | { | |
c5aa993b | 1128 | if (!inf->task) |
c906108c | 1129 | return 0; |
c5aa993b | 1130 | if (!inf->threads_up_to_date) |
c906108c SS |
1131 | inf_validate_procs (inf); |
1132 | return !!inf->task; | |
1133 | } | |
1134 | ||
1135 | /* Sets the resume_sc of each thread in inf. That of RUN_THREAD is set to 0, | |
1136 | and others are set to their run_sc if RUN_OTHERS is true, and otherwise | |
1137 | their pause_sc. */ | |
39efb398 | 1138 | void |
c906108c SS |
1139 | inf_set_threads_resume_sc (struct inf *inf, |
1140 | struct proc *run_thread, int run_others) | |
1141 | { | |
1142 | struct proc *thread; | |
d8734c88 | 1143 | |
c906108c SS |
1144 | inf_update_procs (inf); |
1145 | for (thread = inf->threads; thread; thread = thread->next) | |
1146 | if (thread == run_thread) | |
1147 | thread->resume_sc = 0; | |
1148 | else if (run_others) | |
1149 | thread->resume_sc = thread->run_sc; | |
1150 | else | |
1151 | thread->resume_sc = thread->pause_sc; | |
1152 | } | |
942fd805 | 1153 | |
c906108c SS |
1154 | \f |
1155 | /* Cause INF to continue execution immediately; individual threads may still | |
1156 | be suspended (but their suspend counts will be updated). */ | |
39efb398 | 1157 | void |
c906108c SS |
1158 | inf_resume (struct inf *inf) |
1159 | { | |
1160 | struct proc *thread; | |
1161 | ||
1162 | inf_update_procs (inf); | |
1163 | ||
1164 | for (thread = inf->threads; thread; thread = thread->next) | |
1165 | thread->sc = thread->resume_sc; | |
1166 | ||
1167 | if (inf->task) | |
1168 | { | |
c5aa993b | 1169 | if (!inf->pending_execs) |
c906108c SS |
1170 | /* Try to make sure our task count is correct -- in the case where |
1171 | we're waiting for an exec though, things are too volatile, so just | |
1172 | assume things will be reasonable (which they usually will be). */ | |
1173 | inf_validate_task_sc (inf); | |
1174 | inf->task->sc = 0; | |
1175 | } | |
1176 | ||
1177 | inf_update_suspends (inf); | |
1178 | } | |
1179 | ||
1180 | /* Cause INF to stop execution immediately; individual threads may still | |
1181 | be running. */ | |
39efb398 | 1182 | void |
c906108c SS |
1183 | inf_suspend (struct inf *inf) |
1184 | { | |
1185 | struct proc *thread; | |
1186 | ||
1187 | inf_update_procs (inf); | |
1188 | ||
1189 | for (thread = inf->threads; thread; thread = thread->next) | |
1190 | thread->sc = thread->pause_sc; | |
1191 | ||
1192 | if (inf->task) | |
1193 | inf->task->sc = inf->pause_sc; | |
1194 | ||
1195 | inf_update_suspends (inf); | |
1196 | } | |
942fd805 | 1197 | |
c906108c | 1198 | \f |
942fd805 MK |
1199 | /* INF has one thread PROC that is in single-stepping mode. This |
1200 | function changes it to be PROC, changing any old step_thread to be | |
1201 | a normal one. A PROC of 0 clears any existing value. */ | |
c906108c SS |
1202 | void |
1203 | inf_set_step_thread (struct inf *inf, struct proc *thread) | |
1204 | { | |
bf62e5b4 | 1205 | gdb_assert (!thread || proc_is_thread (thread)); |
c906108c SS |
1206 | |
1207 | if (thread) | |
1208 | inf_debug (inf, "setting step thread: %d/%d", inf->pid, thread->tid); | |
1209 | else | |
1210 | inf_debug (inf, "clearing step thread"); | |
1211 | ||
1212 | if (inf->step_thread != thread) | |
1213 | { | |
1214 | if (inf->step_thread && inf->step_thread->port != MACH_PORT_NULL) | |
c5aa993b | 1215 | if (!proc_trace (inf->step_thread, 0)) |
c906108c SS |
1216 | return; |
1217 | if (thread && proc_trace (thread, 1)) | |
1218 | inf->step_thread = thread; | |
1219 | else | |
1220 | inf->step_thread = 0; | |
1221 | } | |
1222 | } | |
942fd805 | 1223 | |
c906108c SS |
1224 | \f |
1225 | /* Set up the thread resume_sc's so that only the signal thread is running | |
1226 | (plus whatever other thread are set to always run). Returns true if we | |
1227 | did so, or false if we can't find a signal thread. */ | |
39efb398 | 1228 | int |
c906108c SS |
1229 | inf_set_threads_resume_sc_for_signal_thread (struct inf *inf) |
1230 | { | |
1231 | if (inf->signal_thread) | |
1232 | { | |
1233 | inf_set_threads_resume_sc (inf, inf->signal_thread, 0); | |
1234 | return 1; | |
1235 | } | |
1236 | else | |
1237 | return 0; | |
1238 | } | |
1239 | ||
1240 | static void | |
1241 | inf_update_signal_thread (struct inf *inf) | |
1242 | { | |
1243 | /* XXX for now we assume that if there's a msgport, the 2nd thread is | |
1244 | the signal thread. */ | |
1245 | inf->signal_thread = inf->threads ? inf->threads->next : 0; | |
1246 | } | |
942fd805 | 1247 | |
c906108c SS |
1248 | \f |
1249 | /* Detachs from INF's inferior task, letting it run once again... */ | |
1250 | void | |
1251 | inf_detach (struct inf *inf) | |
1252 | { | |
1253 | struct proc *task = inf->task; | |
1254 | ||
1255 | inf_debug (inf, "detaching..."); | |
1256 | ||
1257 | inf_clear_wait (inf); | |
1258 | inf_set_step_thread (inf, 0); | |
1259 | ||
1260 | if (task) | |
1261 | { | |
1262 | struct proc *thread; | |
1263 | ||
cce74817 JM |
1264 | inf_validate_procinfo (inf); |
1265 | ||
c906108c SS |
1266 | inf_set_traced (inf, 0); |
1267 | if (inf->stopped) | |
cce74817 JM |
1268 | { |
1269 | if (inf->nomsg) | |
1270 | inf_continue (inf); | |
1271 | else | |
a493e3e2 | 1272 | inf_signal (inf, GDB_SIGNAL_0); |
cce74817 | 1273 | } |
c906108c SS |
1274 | |
1275 | proc_restore_exc_port (task); | |
1276 | task->sc = inf->detach_sc; | |
1277 | ||
1278 | for (thread = inf->threads; thread; thread = thread->next) | |
1279 | { | |
1280 | proc_restore_exc_port (thread); | |
1281 | thread->sc = thread->detach_sc; | |
1282 | } | |
1283 | ||
1284 | inf_update_suspends (inf); | |
1285 | } | |
1286 | ||
1287 | inf_cleanup (inf); | |
1288 | } | |
1289 | ||
942fd805 MK |
1290 | /* Attaches INF to the process with process id PID, returning it in a |
1291 | suspended state suitable for debugging. */ | |
c906108c SS |
1292 | void |
1293 | inf_attach (struct inf *inf, int pid) | |
1294 | { | |
1295 | inf_debug (inf, "attaching: %d", pid); | |
1296 | ||
1297 | if (inf->pid) | |
1298 | inf_detach (inf); | |
1299 | ||
1300 | inf_startup (inf, pid); | |
1301 | } | |
942fd805 | 1302 | |
c906108c | 1303 | \f |
0963b4bd | 1304 | /* Makes sure that we've got our exception ports entrenched in the process. */ |
c5aa993b JM |
1305 | void |
1306 | inf_steal_exc_ports (struct inf *inf) | |
c906108c SS |
1307 | { |
1308 | struct proc *thread; | |
1309 | ||
1310 | inf_debug (inf, "stealing exception ports"); | |
1311 | ||
0963b4bd | 1312 | inf_set_step_thread (inf, 0); /* The step thread is special. */ |
c906108c SS |
1313 | |
1314 | proc_steal_exc_port (inf->task, inf->event_port); | |
1315 | for (thread = inf->threads; thread; thread = thread->next) | |
1316 | proc_steal_exc_port (thread, MACH_PORT_NULL); | |
1317 | } | |
1318 | ||
1319 | /* Makes sure the process has its own exception ports. */ | |
c5aa993b JM |
1320 | void |
1321 | inf_restore_exc_ports (struct inf *inf) | |
c906108c SS |
1322 | { |
1323 | struct proc *thread; | |
1324 | ||
1325 | inf_debug (inf, "restoring exception ports"); | |
1326 | ||
0963b4bd | 1327 | inf_set_step_thread (inf, 0); /* The step thread is special. */ |
c906108c SS |
1328 | |
1329 | proc_restore_exc_port (inf->task); | |
1330 | for (thread = inf->threads; thread; thread = thread->next) | |
1331 | proc_restore_exc_port (thread); | |
1332 | } | |
942fd805 | 1333 | |
c906108c SS |
1334 | \f |
1335 | /* Deliver signal SIG to INF. If INF is stopped, delivering a signal, even | |
1336 | signal 0, will continue it. INF is assumed to be in a paused state, and | |
1337 | the resume_sc's of INF's threads may be affected. */ | |
1338 | void | |
2ea28649 | 1339 | inf_signal (struct inf *inf, enum gdb_signal sig) |
c906108c | 1340 | { |
0947023d | 1341 | kern_return_t err = 0; |
2ea28649 | 1342 | int host_sig = gdb_signal_to_host (sig); |
c906108c | 1343 | |
2ea28649 | 1344 | #define NAME gdb_signal_to_name (sig) |
c906108c SS |
1345 | |
1346 | if (host_sig >= _NSIG) | |
1347 | /* A mach exception. Exceptions are encoded in the signal space by | |
1348 | putting them after _NSIG; this assumes they're positive (and not | |
1349 | extremely large)! */ | |
1350 | { | |
1351 | struct inf_wait *w = &inf->wait; | |
d8734c88 | 1352 | |
c906108c SS |
1353 | if (w->status.kind == TARGET_WAITKIND_STOPPED |
1354 | && w->status.value.sig == sig | |
1355 | && w->thread && !w->thread->aborted) | |
1356 | /* We're passing through the last exception we received. This is | |
1357 | kind of bogus, because exceptions are per-thread whereas gdb | |
1358 | treats signals as per-process. We just forward the exception to | |
1359 | the correct handler, even it's not for the same thread as TID -- | |
1360 | i.e., we pretend it's global. */ | |
1361 | { | |
1362 | struct exc_state *e = &w->exc; | |
d8734c88 | 1363 | |
c906108c | 1364 | inf_debug (inf, "passing through exception:" |
a9a758e3 | 1365 | " task = %lu, thread = %lu, exc = %d" |
c906108c SS |
1366 | ", code = %d, subcode = %d", |
1367 | w->thread->port, inf->task->port, | |
1368 | e->exception, e->code, e->subcode); | |
1369 | err = | |
1370 | exception_raise_request (e->handler, | |
1371 | e->reply, MACH_MSG_TYPE_MOVE_SEND_ONCE, | |
1372 | w->thread->port, inf->task->port, | |
1373 | e->exception, e->code, e->subcode); | |
1374 | } | |
1375 | else | |
8a3fe4f8 | 1376 | error (_("Can't forward spontaneous exception (%s)."), NAME); |
c906108c SS |
1377 | } |
1378 | else | |
1379 | /* A Unix signal. */ | |
c5aa993b JM |
1380 | if (inf->stopped) |
1381 | /* The process is stopped and expecting a signal. Just send off a | |
1382 | request and let it get handled when we resume everything. */ | |
1383 | { | |
1384 | inf_debug (inf, "sending %s to stopped process", NAME); | |
1385 | err = | |
1386 | INF_MSGPORT_RPC (inf, | |
1387 | msg_sig_post_untraced_request (msgport, | |
1388 | inf->event_port, | |
1389 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
1390 | host_sig, 0, | |
1391 | refport)); | |
1392 | if (!err) | |
1393 | /* Posting an untraced signal automatically continues it. | |
1394 | We clear this here rather than when we get the reply | |
1395 | because we'd rather assume it's not stopped when it | |
1396 | actually is, than the reverse. */ | |
1397 | inf->stopped = 0; | |
1398 | } | |
1399 | else | |
1400 | /* It's not expecting it. We have to let just the signal thread | |
1401 | run, and wait for it to get into a reasonable state before we | |
1402 | can continue the rest of the process. When we finally resume the | |
1403 | process the signal we request will be the very first thing that | |
0963b4bd | 1404 | happens. */ |
c5aa993b | 1405 | { |
942fd805 MK |
1406 | inf_debug (inf, "sending %s to unstopped process" |
1407 | " (so resuming signal thread)", NAME); | |
c5aa993b | 1408 | err = |
942fd805 MK |
1409 | INF_RESUME_MSGPORT_RPC (inf, |
1410 | msg_sig_post_untraced (msgport, host_sig, | |
1411 | 0, refport)); | |
c5aa993b | 1412 | } |
c906108c SS |
1413 | |
1414 | if (err == EIEIO) | |
0963b4bd | 1415 | /* Can't do too much... */ |
8a3fe4f8 | 1416 | warning (_("Can't deliver signal %s: No signal thread."), NAME); |
c906108c | 1417 | else if (err) |
8a3fe4f8 | 1418 | warning (_("Delivering signal %s: %s"), NAME, safe_strerror (err)); |
c906108c SS |
1419 | |
1420 | #undef NAME | |
1421 | } | |
942fd805 | 1422 | |
c906108c | 1423 | \f |
cce74817 JM |
1424 | /* Continue INF without delivering a signal. This is meant to be used |
1425 | when INF does not have a message port. */ | |
1426 | void | |
1427 | inf_continue (struct inf *inf) | |
1428 | { | |
1429 | process_t proc; | |
0947023d | 1430 | kern_return_t err = proc_pid2proc (proc_server, inf->pid, &proc); |
cce74817 | 1431 | |
c5aa993b | 1432 | if (!err) |
cce74817 JM |
1433 | { |
1434 | inf_debug (inf, "continuing process"); | |
1435 | ||
1436 | err = proc_mark_cont (proc); | |
c5aa993b | 1437 | if (!err) |
cce74817 JM |
1438 | { |
1439 | struct proc *thread; | |
1440 | ||
1441 | for (thread = inf->threads; thread; thread = thread->next) | |
1442 | thread_resume (thread->port); | |
c5aa993b | 1443 | |
cce74817 JM |
1444 | inf->stopped = 0; |
1445 | } | |
1446 | } | |
1447 | ||
1448 | if (err) | |
8a3fe4f8 | 1449 | warning (_("Can't continue process: %s"), safe_strerror (err)); |
cce74817 | 1450 | } |
942fd805 | 1451 | |
cce74817 | 1452 | \f |
c906108c | 1453 | /* The inferior used for all gdb target ops. */ |
c289427b | 1454 | struct inf *gnu_current_inf = 0; |
c906108c SS |
1455 | |
1456 | /* The inferior being waited for by gnu_wait. Since GDB is decidely not | |
1457 | multi-threaded, we don't bother to lock this. */ | |
1458 | struct inf *waiting_inf; | |
1459 | ||
21389b7f TS |
1460 | /* MIG stubs are not yet ready for C++ compilation. */ |
1461 | extern "C" int exc_server (mach_msg_header_t *, mach_msg_header_t *); | |
1462 | extern "C" int msg_reply_server (mach_msg_header_t *, mach_msg_header_t *); | |
1463 | extern "C" int notify_server (mach_msg_header_t *, mach_msg_header_t *); | |
1464 | extern "C" int process_reply_server (mach_msg_header_t *, mach_msg_header_t *); | |
1465 | ||
0963b4bd | 1466 | /* Wait for something to happen in the inferior, returning what in STATUS. */ |
f6ac5f3d PA |
1467 | |
1468 | ptid_t | |
1469 | gnu_nat_target::wait (ptid_t ptid, struct target_waitstatus *status, | |
1470 | int options) | |
c906108c | 1471 | { |
c5aa993b JM |
1472 | struct msg |
1473 | { | |
1474 | mach_msg_header_t hdr; | |
1475 | mach_msg_type_t type; | |
1476 | int data[8000]; | |
942fd805 | 1477 | } msg; |
0947023d | 1478 | kern_return_t err; |
c906108c | 1479 | struct proc *thread; |
c289427b | 1480 | struct inf *inf = gnu_current_inf; |
c906108c | 1481 | |
bf62e5b4 | 1482 | gdb_assert (inf->task); |
c906108c SS |
1483 | |
1484 | if (!inf->threads && !inf->pending_execs) | |
1485 | /* No threads! Assume that maybe some outside agency is frobbing our | |
1486 | task, and really look for new threads. If we can't find any, just tell | |
1487 | the user to try again later. */ | |
1488 | { | |
1489 | inf_validate_procs (inf); | |
1490 | if (!inf->threads && !inf->task->dead) | |
8a3fe4f8 | 1491 | error (_("There are no threads; try again later.")); |
c906108c SS |
1492 | } |
1493 | ||
1494 | waiting_inf = inf; | |
1495 | ||
a068643d | 1496 | inf_debug (inf, "waiting for: %s", target_pid_to_str (ptid).c_str ()); |
c906108c | 1497 | |
c5aa993b | 1498 | rewait: |
c906108c SS |
1499 | if (proc_wait_pid != inf->pid && !inf->no_wait) |
1500 | /* Always get information on events from the proc server. */ | |
1501 | { | |
1502 | inf_debug (inf, "requesting wait on pid %d", inf->pid); | |
1503 | ||
1504 | if (proc_wait_pid) | |
1505 | /* The proc server is single-threaded, and only allows a single | |
0963b4bd | 1506 | outstanding wait request, so we have to cancel the previous one. */ |
c906108c SS |
1507 | { |
1508 | inf_debug (inf, "cancelling previous wait on pid %d", proc_wait_pid); | |
1509 | interrupt_operation (proc_server, 0); | |
1510 | } | |
1511 | ||
1512 | err = | |
1513 | proc_wait_request (proc_server, inf->event_port, inf->pid, WUNTRACED); | |
1514 | if (err) | |
8a3fe4f8 | 1515 | warning (_("wait request failed: %s"), safe_strerror (err)); |
c906108c SS |
1516 | else |
1517 | { | |
1518 | inf_debug (inf, "waits pending: %d", proc_waits_pending); | |
1519 | proc_wait_pid = inf->pid; | |
942fd805 MK |
1520 | /* Even if proc_waits_pending was > 0 before, we still won't |
1521 | get any other replies, because it was either from a | |
1522 | different INF, or a different process attached to INF -- | |
1523 | and the event port, which is the wait reply port, changes | |
0963b4bd | 1524 | when you switch processes. */ |
c906108c SS |
1525 | proc_waits_pending = 1; |
1526 | } | |
1527 | } | |
1528 | ||
1529 | inf_clear_wait (inf); | |
1530 | ||
1531 | /* What can happen? (1) Dead name notification; (2) Exceptions arrive; | |
1532 | (3) wait reply from the proc server. */ | |
1533 | ||
1534 | inf_debug (inf, "waiting for an event..."); | |
1535 | err = mach_msg (&msg.hdr, MACH_RCV_MSG | MACH_RCV_INTERRUPT, | |
1536 | 0, sizeof (struct msg), inf->event_port, | |
1537 | MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); | |
1538 | ||
1539 | /* Re-suspend the task. */ | |
1540 | inf_suspend (inf); | |
1541 | ||
1542 | if (!inf->task && inf->pending_execs) | |
1543 | /* When doing an exec, it's possible that the old task wasn't reused | |
1544 | (e.g., setuid execs). So if the task seems to have disappeared, | |
1545 | attempt to refetch it, as the pid should still be the same. */ | |
1546 | inf_set_pid (inf, inf->pid); | |
1547 | ||
1548 | if (err == EMACH_RCV_INTERRUPTED) | |
1549 | inf_debug (inf, "interrupted"); | |
1550 | else if (err) | |
8a3fe4f8 | 1551 | error (_("Couldn't wait for an event: %s"), safe_strerror (err)); |
c906108c SS |
1552 | else |
1553 | { | |
c5aa993b JM |
1554 | struct |
1555 | { | |
1556 | mach_msg_header_t hdr; | |
1557 | mach_msg_type_t err_type; | |
1558 | kern_return_t err; | |
1559 | char noise[200]; | |
1560 | } | |
1561 | reply; | |
c906108c SS |
1562 | |
1563 | inf_debug (inf, "event: msgid = %d", msg.hdr.msgh_id); | |
1564 | ||
1565 | /* Handle what we got. */ | |
c5aa993b JM |
1566 | if (!notify_server (&msg.hdr, &reply.hdr) |
1567 | && !exc_server (&msg.hdr, &reply.hdr) | |
1568 | && !process_reply_server (&msg.hdr, &reply.hdr) | |
1569 | && !msg_reply_server (&msg.hdr, &reply.hdr)) | |
c906108c | 1570 | /* Whatever it is, it's something strange. */ |
8a3fe4f8 | 1571 | error (_("Got a strange event, msg id = %d."), msg.hdr.msgh_id); |
c906108c SS |
1572 | |
1573 | if (reply.err) | |
8a3fe4f8 | 1574 | error (_("Handling event, msgid = %d: %s"), |
dc672865 | 1575 | msg.hdr.msgh_id, safe_strerror (reply.err)); |
c906108c SS |
1576 | } |
1577 | ||
1578 | if (inf->pending_execs) | |
1579 | /* We're waiting for the inferior to finish execing. */ | |
1580 | { | |
1581 | struct inf_wait *w = &inf->wait; | |
1582 | enum target_waitkind kind = w->status.kind; | |
1583 | ||
1584 | if (kind == TARGET_WAITKIND_SPURIOUS) | |
1585 | /* Since gdb is actually counting the number of times the inferior | |
1586 | stops, expecting one stop per exec, we only return major events | |
1587 | while execing. */ | |
1588 | { | |
1589 | w->suppress = 1; | |
c82f56d9 | 1590 | inf_debug (inf, "pending_execs, ignoring minor event"); |
c906108c SS |
1591 | } |
1592 | else if (kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 | 1593 | && w->status.value.sig == GDB_SIGNAL_TRAP) |
c906108c SS |
1594 | /* Ah hah! A SIGTRAP from the inferior while starting up probably |
1595 | means we've succesfully completed an exec! */ | |
1596 | { | |
c82f56d9 | 1597 | inf_debug (inf, "one pending exec completed"); |
c906108c SS |
1598 | } |
1599 | else if (kind == TARGET_WAITKIND_STOPPED) | |
1600 | /* It's possible that this signal is because of a crashed process | |
1601 | being handled by the hurd crash server; in this case, the process | |
1602 | will have an extra task suspend, which we need to know about. | |
1603 | Since the code in inf_resume that normally checks for this is | |
1604 | disabled while INF->pending_execs, we do the check here instead. */ | |
1605 | inf_validate_task_sc (inf); | |
1606 | } | |
1607 | ||
1608 | if (inf->wait.suppress) | |
1609 | /* Some totally spurious event happened that we don't consider | |
1610 | worth returning to gdb. Just keep waiting. */ | |
1611 | { | |
1612 | inf_debug (inf, "suppressing return, rewaiting..."); | |
1613 | inf_resume (inf); | |
1614 | goto rewait; | |
1615 | } | |
1616 | ||
1617 | /* Pass back out our results. */ | |
98d346c3 | 1618 | memcpy (status, &inf->wait.status, sizeof (*status)); |
c906108c SS |
1619 | |
1620 | thread = inf->wait.thread; | |
1621 | if (thread) | |
fd79271b | 1622 | ptid = ptid_t (inf->pid, thread->tid, 0); |
d7e15655 | 1623 | else if (ptid == minus_one_ptid) |
617fd3b5 | 1624 | thread = inf_tid_to_thread (inf, -1); |
c906108c | 1625 | else |
e38504b3 | 1626 | thread = inf_tid_to_thread (inf, ptid.lwp ()); |
c906108c SS |
1627 | |
1628 | if (!thread || thread->port == MACH_PORT_NULL) | |
942fd805 MK |
1629 | { |
1630 | /* TID is dead; try and find a new thread. */ | |
1631 | if (inf_update_procs (inf) && inf->threads) | |
fd79271b | 1632 | ptid = ptid_t (inf->pid, inf->threads->tid, 0); /* The first |
0963b4bd MS |
1633 | available |
1634 | thread. */ | |
942fd805 | 1635 | else |
617fd3b5 | 1636 | ptid = inferior_ptid; /* let wait_for_inferior handle exit case */ |
942fd805 | 1637 | } |
c906108c | 1638 | |
617fd3b5 | 1639 | if (thread |
d7e15655 | 1640 | && ptid != minus_one_ptid |
617fd3b5 | 1641 | && status->kind != TARGET_WAITKIND_SPURIOUS |
c906108c | 1642 | && inf->pause_sc == 0 && thread->pause_sc == 0) |
942fd805 MK |
1643 | /* If something actually happened to THREAD, make sure we |
1644 | suspend it. */ | |
c906108c SS |
1645 | { |
1646 | thread->sc = 1; | |
1647 | inf_update_suspends (inf); | |
c5aa993b | 1648 | } |
c906108c | 1649 | |
617fd3b5 | 1650 | inf_debug (inf, "returning ptid = %s, status = %s (%d)", |
a068643d | 1651 | target_pid_to_str (ptid).c_str (), |
c906108c SS |
1652 | status->kind == TARGET_WAITKIND_EXITED ? "EXITED" |
1653 | : status->kind == TARGET_WAITKIND_STOPPED ? "STOPPED" | |
1654 | : status->kind == TARGET_WAITKIND_SIGNALLED ? "SIGNALLED" | |
1655 | : status->kind == TARGET_WAITKIND_LOADED ? "LOADED" | |
1656 | : status->kind == TARGET_WAITKIND_SPURIOUS ? "SPURIOUS" | |
1657 | : "?", | |
1658 | status->value.integer); | |
1659 | ||
617fd3b5 | 1660 | return ptid; |
c906108c | 1661 | } |
942fd805 | 1662 | |
c906108c SS |
1663 | \f |
1664 | /* The rpc handler called by exc_server. */ | |
0947023d | 1665 | kern_return_t |
c906108c SS |
1666 | S_exception_raise_request (mach_port_t port, mach_port_t reply_port, |
1667 | thread_t thread_port, task_t task_port, | |
1668 | int exception, int code, int subcode) | |
1669 | { | |
1670 | struct inf *inf = waiting_inf; | |
1671 | struct proc *thread = inf_port_to_thread (inf, thread_port); | |
1672 | ||
1673 | inf_debug (waiting_inf, | |
a9a758e3 | 1674 | "thread = %lu, task = %lu, exc = %d, code = %d, subcode = %d", |
942fd805 | 1675 | thread_port, task_port, exception, code, subcode); |
c906108c SS |
1676 | |
1677 | if (!thread) | |
1678 | /* We don't know about thread? */ | |
1679 | { | |
1680 | inf_update_procs (inf); | |
1681 | thread = inf_port_to_thread (inf, thread_port); | |
1682 | if (!thread) | |
1683 | /* Give up, the generating thread is gone. */ | |
1684 | return 0; | |
1685 | } | |
1686 | ||
1687 | mach_port_deallocate (mach_task_self (), thread_port); | |
1688 | mach_port_deallocate (mach_task_self (), task_port); | |
1689 | ||
c5aa993b | 1690 | if (!thread->aborted) |
c906108c SS |
1691 | /* THREAD hasn't been aborted since this exception happened (abortion |
1692 | clears any exception state), so it must be real. */ | |
1693 | { | |
1694 | /* Store away the details; this will destroy any previous info. */ | |
1695 | inf->wait.thread = thread; | |
1696 | ||
1697 | inf->wait.status.kind = TARGET_WAITKIND_STOPPED; | |
1698 | ||
1699 | if (exception == EXC_BREAKPOINT) | |
1700 | /* GDB likes to get SIGTRAP for breakpoints. */ | |
1701 | { | |
a493e3e2 | 1702 | inf->wait.status.value.sig = GDB_SIGNAL_TRAP; |
c906108c SS |
1703 | mach_port_deallocate (mach_task_self (), reply_port); |
1704 | } | |
1705 | else | |
1706 | /* Record the exception so that we can forward it later. */ | |
1707 | { | |
1708 | if (thread->exc_port == port) | |
1709 | { | |
a9a758e3 | 1710 | inf_debug (waiting_inf, "Handler is thread exception port <%lu>", |
c906108c SS |
1711 | thread->saved_exc_port); |
1712 | inf->wait.exc.handler = thread->saved_exc_port; | |
1713 | } | |
1714 | else | |
1715 | { | |
a9a758e3 | 1716 | inf_debug (waiting_inf, "Handler is task exception port <%lu>", |
c906108c SS |
1717 | inf->task->saved_exc_port); |
1718 | inf->wait.exc.handler = inf->task->saved_exc_port; | |
bf62e5b4 | 1719 | gdb_assert (inf->task->exc_port == port); |
c906108c SS |
1720 | } |
1721 | if (inf->wait.exc.handler != MACH_PORT_NULL) | |
0963b4bd | 1722 | /* Add a reference to the exception handler. */ |
c906108c SS |
1723 | mach_port_mod_refs (mach_task_self (), |
1724 | inf->wait.exc.handler, MACH_PORT_RIGHT_SEND, | |
1725 | 1); | |
1726 | ||
1727 | inf->wait.exc.exception = exception; | |
1728 | inf->wait.exc.code = code; | |
1729 | inf->wait.exc.subcode = subcode; | |
1730 | inf->wait.exc.reply = reply_port; | |
1731 | ||
0963b4bd MS |
1732 | /* Exceptions are encoded in the signal space by putting |
1733 | them after _NSIG; this assumes they're positive (and not | |
1734 | extremely large)! */ | |
c906108c | 1735 | inf->wait.status.value.sig = |
2ea28649 | 1736 | gdb_signal_from_host (_NSIG + exception); |
c906108c SS |
1737 | } |
1738 | } | |
1739 | else | |
1740 | /* A supppressed exception, which ignore. */ | |
1741 | { | |
1742 | inf->wait.suppress = 1; | |
1743 | mach_port_deallocate (mach_task_self (), reply_port); | |
1744 | } | |
1745 | ||
1746 | return 0; | |
1747 | } | |
942fd805 | 1748 | |
c906108c SS |
1749 | \f |
1750 | /* Fill in INF's wait field after a task has died without giving us more | |
1751 | detailed information. */ | |
f04a82ef | 1752 | static void |
c906108c SS |
1753 | inf_task_died_status (struct inf *inf) |
1754 | { | |
0963b4bd MS |
1755 | warning (_("Pid %d died with unknown exit status, using SIGKILL."), |
1756 | inf->pid); | |
c906108c | 1757 | inf->wait.status.kind = TARGET_WAITKIND_SIGNALLED; |
a493e3e2 | 1758 | inf->wait.status.value.sig = GDB_SIGNAL_KILL; |
c906108c SS |
1759 | } |
1760 | ||
1761 | /* Notify server routines. The only real one is dead name notification. */ | |
0947023d | 1762 | kern_return_t |
c906108c SS |
1763 | do_mach_notify_dead_name (mach_port_t notify, mach_port_t dead_port) |
1764 | { | |
1765 | struct inf *inf = waiting_inf; | |
1766 | ||
a9a758e3 | 1767 | inf_debug (waiting_inf, "port = %lu", dead_port); |
c906108c SS |
1768 | |
1769 | if (inf->task && inf->task->port == dead_port) | |
1770 | { | |
1771 | proc_debug (inf->task, "is dead"); | |
1772 | inf->task->port = MACH_PORT_NULL; | |
1773 | if (proc_wait_pid == inf->pid) | |
1774 | /* We have a wait outstanding on the process, which will return more | |
1775 | detailed information, so delay until we get that. */ | |
1776 | inf->wait.suppress = 1; | |
1777 | else | |
1778 | /* We never waited for the process (maybe it wasn't a child), so just | |
1779 | pretend it got a SIGKILL. */ | |
1780 | inf_task_died_status (inf); | |
1781 | } | |
1782 | else | |
1783 | { | |
1784 | struct proc *thread = inf_port_to_thread (inf, dead_port); | |
d8734c88 | 1785 | |
c906108c SS |
1786 | if (thread) |
1787 | { | |
1788 | proc_debug (thread, "is dead"); | |
1789 | thread->port = MACH_PORT_NULL; | |
1790 | } | |
f90b2b1d JK |
1791 | |
1792 | if (inf->task->dead) | |
1793 | /* Since the task is dead, its threads are dying with it. */ | |
1794 | inf->wait.suppress = 1; | |
c906108c SS |
1795 | } |
1796 | ||
1797 | mach_port_deallocate (mach_task_self (), dead_port); | |
0963b4bd | 1798 | inf->threads_up_to_date = 0; /* Just in case. */ |
c906108c SS |
1799 | |
1800 | return 0; | |
1801 | } | |
942fd805 | 1802 | |
c906108c | 1803 | \f |
3398af6a | 1804 | #define ILL_RPC(fun, ...) \ |
842c05cd | 1805 | extern kern_return_t fun (__VA_ARGS__); \ |
3398af6a TS |
1806 | kern_return_t fun (__VA_ARGS__) \ |
1807 | { \ | |
1808 | warning (_("illegal rpc: %s"), #fun); \ | |
1809 | return 0; \ | |
1810 | } | |
942fd805 | 1811 | |
3398af6a TS |
1812 | ILL_RPC (do_mach_notify_no_senders, |
1813 | mach_port_t notify, mach_port_mscount_t count) | |
1814 | ILL_RPC (do_mach_notify_port_deleted, | |
1815 | mach_port_t notify, mach_port_t name) | |
1816 | ILL_RPC (do_mach_notify_msg_accepted, | |
1817 | mach_port_t notify, mach_port_t name) | |
1818 | ILL_RPC (do_mach_notify_port_destroyed, | |
1819 | mach_port_t notify, mach_port_t name) | |
1820 | ILL_RPC (do_mach_notify_send_once, | |
1821 | mach_port_t notify) | |
c906108c SS |
1822 | \f |
1823 | /* Process_reply server routines. We only use process_wait_reply. */ | |
1824 | ||
0947023d TS |
1825 | kern_return_t |
1826 | S_proc_wait_reply (mach_port_t reply, kern_return_t err, | |
c906108c SS |
1827 | int status, int sigcode, rusage_t rusage, pid_t pid) |
1828 | { | |
1829 | struct inf *inf = waiting_inf; | |
1830 | ||
1831 | inf_debug (inf, "err = %s, pid = %d, status = 0x%x, sigcode = %d", | |
dc672865 | 1832 | err ? safe_strerror (err) : "0", pid, status, sigcode); |
c906108c SS |
1833 | |
1834 | if (err && proc_wait_pid && (!inf->task || !inf->task->port)) | |
1835 | /* Ack. The task has died, but the task-died notification code didn't | |
1836 | tell anyone because it thought a more detailed reply from the | |
1837 | procserver was forthcoming. However, we now learn that won't | |
1838 | happen... So we have to act like the task just died, and this time, | |
1839 | tell the world. */ | |
1840 | inf_task_died_status (inf); | |
1841 | ||
1842 | if (--proc_waits_pending == 0) | |
1843 | /* PROC_WAIT_PID represents the most recent wait. We will always get | |
1844 | replies in order because the proc server is single threaded. */ | |
1845 | proc_wait_pid = 0; | |
1846 | ||
1847 | inf_debug (inf, "waits pending now: %d", proc_waits_pending); | |
1848 | ||
1849 | if (err) | |
1850 | { | |
1851 | if (err != EINTR) | |
1852 | { | |
0963b4bd MS |
1853 | warning (_("Can't wait for pid %d: %s"), |
1854 | inf->pid, safe_strerror (err)); | |
c906108c SS |
1855 | inf->no_wait = 1; |
1856 | ||
1857 | /* Since we can't see the inferior's signals, don't trap them. */ | |
1858 | inf_set_traced (inf, 0); | |
1859 | } | |
1860 | } | |
1861 | else if (pid == inf->pid) | |
1862 | { | |
1863 | store_waitstatus (&inf->wait.status, status); | |
1864 | if (inf->wait.status.kind == TARGET_WAITKIND_STOPPED) | |
1865 | /* The process has sent us a signal, and stopped itself in a sane | |
1866 | state pending our actions. */ | |
1867 | { | |
1868 | inf_debug (inf, "process has stopped itself"); | |
1869 | inf->stopped = 1; | |
1870 | } | |
1871 | } | |
1872 | else | |
1873 | inf->wait.suppress = 1; /* Something odd happened. Ignore. */ | |
1874 | ||
1875 | return 0; | |
1876 | } | |
1877 | ||
3398af6a TS |
1878 | ILL_RPC (S_proc_setmsgport_reply, |
1879 | mach_port_t reply_port, kern_return_t return_code, | |
1880 | mach_port_t oldmsgport) | |
1881 | ILL_RPC (S_proc_getmsgport_reply, | |
1882 | mach_port_t reply_port, kern_return_t return_code, | |
8071c5ce | 1883 | mach_port_t msgports, mach_msg_type_name_t msgportsPoly) |
3398af6a TS |
1884 | ILL_RPC (S_proc_pid2task_reply, |
1885 | mach_port_t reply_port, kern_return_t return_code, mach_port_t task) | |
1886 | ILL_RPC (S_proc_task2pid_reply, | |
1887 | mach_port_t reply_port, kern_return_t return_code, pid_t pid) | |
1888 | ILL_RPC (S_proc_task2proc_reply, | |
8071c5ce DM |
1889 | mach_port_t reply_port, kern_return_t return_code, |
1890 | mach_port_t proc, mach_msg_type_name_t procPoly) | |
3398af6a TS |
1891 | ILL_RPC (S_proc_proc2task_reply, |
1892 | mach_port_t reply_port, kern_return_t return_code, mach_port_t task) | |
1893 | ILL_RPC (S_proc_pid2proc_reply, | |
8071c5ce DM |
1894 | mach_port_t reply_port, kern_return_t return_code, |
1895 | mach_port_t proc, mach_msg_type_name_t procPoly) | |
3398af6a TS |
1896 | ILL_RPC (S_proc_getprocinfo_reply, |
1897 | mach_port_t reply_port, kern_return_t return_code, | |
1898 | int flags, procinfo_t procinfo, mach_msg_type_number_t procinfoCnt, | |
1899 | data_t threadwaits, mach_msg_type_number_t threadwaitsCnt) | |
1900 | ILL_RPC (S_proc_getprocargs_reply, | |
1901 | mach_port_t reply_port, kern_return_t return_code, | |
1902 | data_t procargs, mach_msg_type_number_t procargsCnt) | |
1903 | ILL_RPC (S_proc_getprocenv_reply, | |
1904 | mach_port_t reply_port, kern_return_t return_code, | |
1905 | data_t procenv, mach_msg_type_number_t procenvCnt) | |
1906 | ILL_RPC (S_proc_getloginid_reply, | |
1907 | mach_port_t reply_port, kern_return_t return_code, pid_t login_id) | |
1908 | ILL_RPC (S_proc_getloginpids_reply, | |
1909 | mach_port_t reply_port, kern_return_t return_code, | |
1910 | pidarray_t pids, mach_msg_type_number_t pidsCnt) | |
1911 | ILL_RPC (S_proc_getlogin_reply, | |
1912 | mach_port_t reply_port, kern_return_t return_code, string_t logname) | |
1913 | ILL_RPC (S_proc_getsid_reply, | |
1914 | mach_port_t reply_port, kern_return_t return_code, pid_t sid) | |
1915 | ILL_RPC (S_proc_getsessionpgids_reply, | |
1916 | mach_port_t reply_port, kern_return_t return_code, | |
1917 | pidarray_t pgidset, mach_msg_type_number_t pgidsetCnt) | |
1918 | ILL_RPC (S_proc_getsessionpids_reply, | |
1919 | mach_port_t reply_port, kern_return_t return_code, | |
1920 | pidarray_t pidset, mach_msg_type_number_t pidsetCnt) | |
1921 | ILL_RPC (S_proc_getsidport_reply, | |
1922 | mach_port_t reply_port, kern_return_t return_code, | |
1923 | mach_port_t sessport) | |
1924 | ILL_RPC (S_proc_getpgrp_reply, | |
1925 | mach_port_t reply_port, kern_return_t return_code, pid_t pgrp) | |
1926 | ILL_RPC (S_proc_getpgrppids_reply, | |
1927 | mach_port_t reply_port, kern_return_t return_code, | |
1928 | pidarray_t pidset, mach_msg_type_number_t pidsetCnt) | |
1929 | ILL_RPC (S_proc_get_tty_reply, | |
1930 | mach_port_t reply_port, kern_return_t return_code, mach_port_t tty) | |
1931 | ILL_RPC (S_proc_getnports_reply, | |
1932 | mach_port_t reply_port, kern_return_t return_code, | |
1933 | mach_msg_type_number_t nports) | |
1934 | ILL_RPC (S_proc_is_important_reply, | |
1935 | mach_port_t reply_port, kern_return_t return_code, | |
1936 | boolean_t essential) | |
1937 | ILL_RPC (S_proc_get_code_reply, | |
1938 | mach_port_t reply_port, kern_return_t return_code, | |
1939 | vm_address_t start_code, vm_address_t end_code) | |
c906108c SS |
1940 | \f |
1941 | /* Msg_reply server routines. We only use msg_sig_post_untraced_reply. */ | |
1942 | ||
0947023d TS |
1943 | kern_return_t |
1944 | S_msg_sig_post_untraced_reply (mach_port_t reply, kern_return_t err) | |
c906108c SS |
1945 | { |
1946 | struct inf *inf = waiting_inf; | |
1947 | ||
1948 | if (err == EBUSY) | |
1949 | /* EBUSY is what we get when the crash server has grabbed control of the | |
1950 | process and doesn't like what signal we tried to send it. Just act | |
1951 | like the process stopped (using a signal of 0 should mean that the | |
1952 | *next* time the user continues, it will pass signal 0, which the crash | |
1953 | server should like). */ | |
1954 | { | |
1955 | inf->wait.status.kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 1956 | inf->wait.status.value.sig = GDB_SIGNAL_0; |
c906108c SS |
1957 | } |
1958 | else if (err) | |
8a3fe4f8 | 1959 | warning (_("Signal delivery failed: %s"), safe_strerror (err)); |
c906108c SS |
1960 | |
1961 | if (err) | |
1962 | /* We only get this reply when we've posted a signal to a process which we | |
1963 | thought was stopped, and which we expected to continue after the signal. | |
1964 | Given that the signal has failed for some reason, it's reasonable to | |
1965 | assume it's still stopped. */ | |
1966 | inf->stopped = 1; | |
1967 | else | |
1968 | inf->wait.suppress = 1; | |
1969 | ||
1970 | return 0; | |
1971 | } | |
1972 | ||
3398af6a | 1973 | ILL_RPC (S_msg_sig_post_reply, |
0947023d | 1974 | mach_port_t reply, kern_return_t err) |
c906108c SS |
1975 | \f |
1976 | /* Returns the number of messages queued for the receive right PORT. */ | |
1977 | static mach_port_msgcount_t | |
1978 | port_msgs_queued (mach_port_t port) | |
1979 | { | |
1980 | struct mach_port_status status; | |
0947023d | 1981 | kern_return_t err = |
d8734c88 | 1982 | mach_port_get_receive_status (mach_task_self (), port, &status); |
c906108c SS |
1983 | |
1984 | if (err) | |
1985 | return 0; | |
1986 | else | |
1987 | return status.mps_msgcount; | |
1988 | } | |
942fd805 | 1989 | |
c906108c SS |
1990 | \f |
1991 | /* Resume execution of the inferior process. | |
1992 | ||
1993 | If STEP is nonzero, single-step it. | |
1994 | If SIGNAL is nonzero, give it that signal. | |
1995 | ||
1996 | TID STEP: | |
1997 | -1 true Single step the current thread allowing other threads to run. | |
1998 | -1 false Continue the current thread allowing other threads to run. | |
1999 | X true Single step the given thread, don't allow any others to run. | |
2000 | X false Continue the given thread, do not allow any others to run. | |
2001 | (Where X, of course, is anything except -1) | |
2002 | ||
2003 | Note that a resume may not `take' if there are pending exceptions/&c | |
2004 | still unprocessed from the last resume we did (any given resume may result | |
0963b4bd MS |
2005 | in multiple events returned by wait). */ |
2006 | ||
f6ac5f3d PA |
2007 | void |
2008 | gnu_nat_target::resume (ptid_t ptid, int step, enum gdb_signal sig) | |
c906108c SS |
2009 | { |
2010 | struct proc *step_thread = 0; | |
617fd3b5 | 2011 | int resume_all; |
c289427b | 2012 | struct inf *inf = gnu_current_inf; |
c906108c | 2013 | |
617fd3b5 | 2014 | inf_debug (inf, "ptid = %s, step = %d, sig = %d", |
a068643d | 2015 | target_pid_to_str (ptid).c_str (), step, sig); |
c906108c | 2016 | |
cce74817 | 2017 | inf_validate_procinfo (inf); |
c5aa993b | 2018 | |
a493e3e2 | 2019 | if (sig != GDB_SIGNAL_0 || inf->stopped) |
cce74817 | 2020 | { |
a493e3e2 | 2021 | if (sig == GDB_SIGNAL_0 && inf->nomsg) |
cce74817 JM |
2022 | inf_continue (inf); |
2023 | else | |
2024 | inf_signal (inf, sig); | |
2025 | } | |
c906108c SS |
2026 | else if (inf->wait.exc.reply != MACH_PORT_NULL) |
2027 | /* We received an exception to which we have chosen not to forward, so | |
2028 | abort the faulting thread, which will perhaps retake it. */ | |
2029 | { | |
2030 | proc_abort (inf->wait.thread, 1); | |
8a3fe4f8 | 2031 | warning (_("Aborting %s with unforwarded exception %s."), |
c906108c | 2032 | proc_string (inf->wait.thread), |
2ea28649 | 2033 | gdb_signal_to_name (inf->wait.status.value.sig)); |
c906108c SS |
2034 | } |
2035 | ||
2036 | if (port_msgs_queued (inf->event_port)) | |
2037 | /* If there are still messages in our event queue, don't bother resuming | |
0963b4bd | 2038 | the process, as we're just going to stop it right away anyway. */ |
c906108c SS |
2039 | return; |
2040 | ||
2041 | inf_update_procs (inf); | |
2042 | ||
617fd3b5 | 2043 | /* A specific PTID means `step only this process id'. */ |
d7e15655 | 2044 | resume_all = ptid == minus_one_ptid; |
617fd3b5 PA |
2045 | |
2046 | if (resume_all) | |
c906108c SS |
2047 | /* Allow all threads to run, except perhaps single-stepping one. */ |
2048 | { | |
dfd4cc63 | 2049 | inf_debug (inf, "running all threads; tid = %d", |
e99b03dc | 2050 | inferior_ptid.pid ()); |
0963b4bd | 2051 | ptid = inferior_ptid; /* What to step. */ |
c906108c SS |
2052 | inf_set_threads_resume_sc (inf, 0, 1); |
2053 | } | |
2054 | else | |
2055 | /* Just allow a single thread to run. */ | |
2056 | { | |
e38504b3 | 2057 | struct proc *thread = inf_tid_to_thread (inf, ptid.lwp ()); |
d8734c88 | 2058 | |
c5aa993b | 2059 | if (!thread) |
617fd3b5 | 2060 | error (_("Can't run single thread id %s: no such thread!"), |
a068643d TT |
2061 | target_pid_to_str (ptid).c_str ()); |
2062 | inf_debug (inf, "running one thread: %s", | |
2063 | target_pid_to_str (ptid).c_str ()); | |
c906108c SS |
2064 | inf_set_threads_resume_sc (inf, thread, 0); |
2065 | } | |
2066 | ||
2067 | if (step) | |
2068 | { | |
e38504b3 | 2069 | step_thread = inf_tid_to_thread (inf, ptid.lwp ()); |
c5aa993b | 2070 | if (!step_thread) |
617fd3b5 | 2071 | warning (_("Can't step thread id %s: no such thread."), |
a068643d | 2072 | target_pid_to_str (ptid).c_str ()); |
c906108c | 2073 | else |
a068643d TT |
2074 | inf_debug (inf, "stepping thread: %s", |
2075 | target_pid_to_str (ptid).c_str ()); | |
c906108c SS |
2076 | } |
2077 | if (step_thread != inf->step_thread) | |
2078 | inf_set_step_thread (inf, step_thread); | |
2079 | ||
2080 | inf_debug (inf, "here we go..."); | |
2081 | inf_resume (inf); | |
2082 | } | |
942fd805 | 2083 | |
c906108c | 2084 | \f |
f6ac5f3d PA |
2085 | void |
2086 | gnu_nat_target::kill () | |
c906108c | 2087 | { |
c289427b | 2088 | struct proc *task = gnu_current_inf->task; |
d8734c88 | 2089 | |
c906108c SS |
2090 | if (task) |
2091 | { | |
2092 | proc_debug (task, "terminating..."); | |
2093 | task_terminate (task->port); | |
c289427b | 2094 | inf_set_pid (gnu_current_inf, -1); |
c906108c | 2095 | } |
bc1e6c81 | 2096 | target_mourn_inferior (inferior_ptid); |
c906108c SS |
2097 | } |
2098 | ||
2099 | /* Clean up after the inferior dies. */ | |
f6ac5f3d PA |
2100 | void |
2101 | gnu_nat_target::mourn_inferior () | |
c906108c | 2102 | { |
c289427b PA |
2103 | inf_debug (gnu_current_inf, "rip"); |
2104 | inf_detach (gnu_current_inf); | |
f6ac5f3d | 2105 | inf_child_target::mourn_inferior (); |
c906108c | 2106 | } |
942fd805 | 2107 | |
c906108c SS |
2108 | \f |
2109 | /* Fork an inferior process, and start debugging it. */ | |
2110 | ||
2111 | /* Set INFERIOR_PID to the first thread available in the child, if any. */ | |
2112 | static int | |
fba45db2 | 2113 | inf_pick_first_thread (void) |
c906108c | 2114 | { |
c289427b | 2115 | if (gnu_current_inf->task && gnu_current_inf->threads) |
c906108c | 2116 | /* The first thread. */ |
c289427b | 2117 | return gnu_current_inf->threads->tid; |
c906108c SS |
2118 | else |
2119 | /* What may be the next thread. */ | |
2120 | return next_thread_id; | |
2121 | } | |
2122 | ||
2123 | static struct inf * | |
fba45db2 | 2124 | cur_inf (void) |
c906108c | 2125 | { |
c289427b PA |
2126 | if (!gnu_current_inf) |
2127 | gnu_current_inf = make_inf (); | |
2128 | return gnu_current_inf; | |
c906108c SS |
2129 | } |
2130 | ||
a9617a42 TS |
2131 | static void |
2132 | gnu_ptrace_me (void) | |
2133 | { | |
2134 | /* We're in the child; make this process stop as soon as it execs. */ | |
2135 | struct inf *inf = cur_inf (); | |
2136 | inf_debug (inf, "tracing self"); | |
2137 | if (ptrace (PTRACE_TRACEME) != 0) | |
0db8980c | 2138 | trace_start_error_with_name ("ptrace"); |
a9617a42 TS |
2139 | } |
2140 | ||
f6ac5f3d PA |
2141 | void |
2142 | gnu_nat_target::create_inferior (const char *exec_file, | |
2143 | const std::string &allargs, | |
2144 | char **env, | |
2145 | int from_tty) | |
c906108c SS |
2146 | { |
2147 | struct inf *inf = cur_inf (); | |
b4d1e8c7 | 2148 | int pid; |
c906108c | 2149 | |
b4d1e8c7 | 2150 | inf_debug (inf, "creating inferior"); |
c906108c | 2151 | |
a9617a42 | 2152 | pid = fork_inferior (exec_file, allargs, env, gnu_ptrace_me, |
e69860f1 | 2153 | NULL, NULL, NULL, NULL); |
c906108c | 2154 | |
2090129c SDJ |
2155 | /* We have something that executes now. We'll be running through |
2156 | the shell at this point (if startup-with-shell is true), but the | |
2157 | pid shouldn't change. */ | |
f2907e49 | 2158 | add_thread_silent (ptid_t (pid)); |
2090129c | 2159 | |
b4d1e8c7 PA |
2160 | /* Attach to the now stopped child, which is actually a shell... */ |
2161 | inf_debug (inf, "attaching to child: %d", pid); | |
c906108c | 2162 | |
b4d1e8c7 | 2163 | inf_attach (inf, pid); |
617fd3b5 | 2164 | |
f6ac5f3d | 2165 | push_target (this); |
c906108c | 2166 | |
c82f56d9 | 2167 | inf->pending_execs = 1; |
b4d1e8c7 PA |
2168 | inf->nomsg = 1; |
2169 | inf->traced = 1; | |
c906108c | 2170 | |
b4d1e8c7 | 2171 | /* Now let the child run again, knowing that it will stop |
0963b4bd | 2172 | immediately because of the ptrace. */ |
b4d1e8c7 PA |
2173 | inf_resume (inf); |
2174 | ||
2175 | /* We now have thread info. */ | |
2176 | thread_change_ptid (inferior_ptid, | |
fd79271b | 2177 | ptid_t (inf->pid, inf_pick_first_thread (), 0)); |
c906108c | 2178 | |
2090129c SDJ |
2179 | gdb_startup_inferior (pid, START_INFERIOR_TRAPS_EXPECTED); |
2180 | ||
c82f56d9 | 2181 | inf->pending_execs = 0; |
c752a4cc TS |
2182 | /* Get rid of the old shell threads. */ |
2183 | prune_threads (); | |
c906108c | 2184 | |
cce74817 | 2185 | inf_validate_procinfo (inf); |
c906108c SS |
2186 | inf_update_signal_thread (inf); |
2187 | inf_set_traced (inf, inf->want_signals); | |
2188 | ||
2189 | /* Execing the process will have trashed our exception ports; steal them | |
2190 | back (or make sure they're restored if the user wants that). */ | |
2191 | if (inf->want_exceptions) | |
2192 | inf_steal_exc_ports (inf); | |
2193 | else | |
2194 | inf_restore_exc_ports (inf); | |
c906108c SS |
2195 | } |
2196 | ||
c906108c | 2197 | \f |
c906108c SS |
2198 | /* Attach to process PID, then initialize for debugging it |
2199 | and wait for the trace-trap that results from attaching. */ | |
f6ac5f3d PA |
2200 | void |
2201 | gnu_nat_target::attach (const char *args, int from_tty) | |
c906108c SS |
2202 | { |
2203 | int pid; | |
2204 | char *exec_file; | |
2205 | struct inf *inf = cur_inf (); | |
181e7f93 | 2206 | struct inferior *inferior; |
c906108c | 2207 | |
74164c56 | 2208 | pid = parse_pid_to_attach (args); |
c906108c | 2209 | |
74164c56 | 2210 | if (pid == getpid ()) /* Trying to masturbate? */ |
8a3fe4f8 | 2211 | error (_("I refuse to debug myself!")); |
c906108c SS |
2212 | |
2213 | if (from_tty) | |
2214 | { | |
2215 | exec_file = (char *) get_exec_file (0); | |
2216 | ||
2217 | if (exec_file) | |
2218 | printf_unfiltered ("Attaching to program `%s', pid %d\n", | |
2219 | exec_file, pid); | |
2220 | else | |
2221 | printf_unfiltered ("Attaching to pid %d\n", pid); | |
c906108c SS |
2222 | } |
2223 | ||
2224 | inf_debug (inf, "attaching to pid: %d", pid); | |
2225 | ||
2226 | inf_attach (inf, pid); | |
a9ab7422 | 2227 | |
f6ac5f3d | 2228 | push_target (this); |
a9ab7422 | 2229 | |
6c95b8df PA |
2230 | inferior = current_inferior (); |
2231 | inferior_appeared (inferior, pid); | |
181e7f93 | 2232 | inferior->attach_flag = 1; |
7f9f62ba | 2233 | |
c906108c SS |
2234 | inf_update_procs (inf); |
2235 | ||
fd79271b | 2236 | inferior_ptid = ptid_t (pid, inf_pick_first_thread (), 0); |
c906108c | 2237 | |
b83266a0 SS |
2238 | /* We have to initialize the terminal settings now, since the code |
2239 | below might try to restore them. */ | |
223ffa71 | 2240 | target_terminal::init (); |
c5aa993b | 2241 | |
c906108c SS |
2242 | /* If the process was stopped before we attached, make it continue the next |
2243 | time the user does a continue. */ | |
cce74817 JM |
2244 | inf_validate_procinfo (inf); |
2245 | ||
2246 | inf_update_signal_thread (inf); | |
2247 | inf_set_traced (inf, inf->want_signals); | |
c906108c | 2248 | |
0963b4bd MS |
2249 | #if 0 /* Do we need this? */ |
2250 | renumber_threads (0); /* Give our threads reasonable names. */ | |
c906108c SS |
2251 | #endif |
2252 | } | |
942fd805 | 2253 | |
c906108c SS |
2254 | \f |
2255 | /* Take a program previously attached to and detaches it. | |
2256 | The program resumes execution and will no longer stop | |
2257 | on signals, etc. We'd better not have left any breakpoints | |
2258 | in the program or it'll die when it hits one. For this | |
2259 | to work, it may be necessary for the process to have been | |
2260 | previously attached. It *might* work if the program was | |
2261 | started via fork. */ | |
f6ac5f3d PA |
2262 | void |
2263 | gnu_nat_target::detach (inferior *inf, int from_tty) | |
c906108c | 2264 | { |
7f9f62ba PA |
2265 | int pid; |
2266 | ||
c906108c SS |
2267 | if (from_tty) |
2268 | { | |
2269 | char *exec_file = get_exec_file (0); | |
d8734c88 | 2270 | |
c906108c SS |
2271 | if (exec_file) |
2272 | printf_unfiltered ("Detaching from program `%s' pid %d\n", | |
c289427b | 2273 | exec_file, gnu_current_inf->pid); |
c906108c | 2274 | else |
c289427b | 2275 | printf_unfiltered ("Detaching from pid %d\n", gnu_current_inf->pid); |
c906108c | 2276 | } |
c5aa993b | 2277 | |
c289427b | 2278 | pid = gnu_current_inf->pid; |
7f9f62ba | 2279 | |
c289427b | 2280 | inf_detach (gnu_current_inf); |
c906108c | 2281 | |
39f77062 | 2282 | inferior_ptid = null_ptid; |
c29ee8d4 | 2283 | detach_inferior (find_inferior_pid (pid)); |
c906108c | 2284 | |
2d0a338c | 2285 | maybe_unpush_target (); |
c906108c | 2286 | } |
942fd805 | 2287 | \f |
c906108c | 2288 | |
f6ac5f3d PA |
2289 | void |
2290 | gnu_nat_target::stop (ptid_t ptid) | |
c906108c | 2291 | { |
f6ac5f3d | 2292 | error (_("stop target function not implemented")); |
c906108c SS |
2293 | } |
2294 | ||
57810aa7 | 2295 | bool |
f6ac5f3d | 2296 | gnu_nat_target::thread_alive (ptid_t ptid) |
c906108c | 2297 | { |
c289427b PA |
2298 | inf_update_procs (gnu_current_inf); |
2299 | return !!inf_tid_to_thread (gnu_current_inf, | |
e38504b3 | 2300 | ptid.lwp ()); |
c906108c | 2301 | } |
942fd805 | 2302 | |
c906108c | 2303 | \f |
942fd805 MK |
2304 | /* Read inferior task's LEN bytes from ADDR and copy it to MYADDR in |
2305 | gdb's address space. Return 0 on failure; number of bytes read | |
2306 | otherwise. */ | |
9b3f3ee6 TS |
2307 | static int |
2308 | gnu_read_inferior (task_t task, CORE_ADDR addr, gdb_byte *myaddr, int length) | |
c906108c | 2309 | { |
0947023d | 2310 | kern_return_t err; |
c906108c SS |
2311 | vm_address_t low_address = (vm_address_t) trunc_page (addr); |
2312 | vm_size_t aligned_length = | |
c5aa993b JM |
2313 | (vm_size_t) round_page (addr + length) - low_address; |
2314 | pointer_t copied; | |
25c0bd04 | 2315 | mach_msg_type_number_t copy_count; |
c906108c | 2316 | |
0963b4bd | 2317 | /* Get memory from inferior with page aligned addresses. */ |
c906108c SS |
2318 | err = vm_read (task, low_address, aligned_length, &copied, ©_count); |
2319 | if (err) | |
2320 | return 0; | |
2321 | ||
0963b4bd MS |
2322 | err = hurd_safe_copyin (myaddr, (void *) (addr - low_address + copied), |
2323 | length); | |
c906108c SS |
2324 | if (err) |
2325 | { | |
8a3fe4f8 | 2326 | warning (_("Read from inferior faulted: %s"), safe_strerror (err)); |
c906108c SS |
2327 | length = 0; |
2328 | } | |
2329 | ||
2330 | err = vm_deallocate (mach_task_self (), copied, copy_count); | |
2331 | if (err) | |
0963b4bd MS |
2332 | warning (_("gnu_read_inferior vm_deallocate failed: %s"), |
2333 | safe_strerror (err)); | |
c906108c SS |
2334 | |
2335 | return length; | |
2336 | } | |
2337 | ||
2338 | #define CHK_GOTO_OUT(str,ret) \ | |
2339 | do if (ret != KERN_SUCCESS) { errstr = #str; goto out; } while(0) | |
2340 | ||
c5aa993b JM |
2341 | struct vm_region_list |
2342 | { | |
c906108c | 2343 | struct vm_region_list *next; |
c5aa993b JM |
2344 | vm_prot_t protection; |
2345 | vm_address_t start; | |
2346 | vm_size_t length; | |
c906108c SS |
2347 | }; |
2348 | ||
c5aa993b | 2349 | struct obstack region_obstack; |
c906108c | 2350 | |
942fd805 MK |
2351 | /* Write gdb's LEN bytes from MYADDR and copy it to ADDR in inferior |
2352 | task's address space. */ | |
9b3f3ee6 TS |
2353 | static int |
2354 | gnu_write_inferior (task_t task, CORE_ADDR addr, | |
2355 | const gdb_byte *myaddr, int length) | |
c906108c | 2356 | { |
0947023d | 2357 | kern_return_t err; |
c5aa993b JM |
2358 | vm_address_t low_address = (vm_address_t) trunc_page (addr); |
2359 | vm_size_t aligned_length = | |
2360 | (vm_size_t) round_page (addr + length) - low_address; | |
2361 | pointer_t copied; | |
25c0bd04 | 2362 | mach_msg_type_number_t copy_count; |
c5aa993b | 2363 | int deallocate = 0; |
c906108c | 2364 | |
924514e1 | 2365 | const char *errstr = "Bug in gnu_write_inferior"; |
c906108c SS |
2366 | |
2367 | struct vm_region_list *region_element; | |
be903358 | 2368 | struct vm_region_list *region_head = NULL; |
c906108c | 2369 | |
0963b4bd | 2370 | /* Get memory from inferior with page aligned addresses. */ |
c906108c SS |
2371 | err = vm_read (task, |
2372 | low_address, | |
2373 | aligned_length, | |
2374 | &copied, | |
2375 | ©_count); | |
2376 | CHK_GOTO_OUT ("gnu_write_inferior vm_read failed", err); | |
2377 | ||
2378 | deallocate++; | |
2379 | ||
96ffcb62 | 2380 | err = hurd_safe_copyout ((void *) (addr - low_address + copied), |
942fd805 | 2381 | myaddr, length); |
c906108c SS |
2382 | CHK_GOTO_OUT ("Write to inferior faulted", err); |
2383 | ||
2384 | obstack_init (®ion_obstack); | |
2385 | ||
2386 | /* Do writes atomically. | |
942fd805 | 2387 | First check for holes and unwritable memory. */ |
c906108c | 2388 | { |
c5aa993b JM |
2389 | vm_size_t remaining_length = aligned_length; |
2390 | vm_address_t region_address = low_address; | |
c906108c SS |
2391 | |
2392 | struct vm_region_list *scan; | |
2393 | ||
c5aa993b | 2394 | while (region_address < low_address + aligned_length) |
c906108c SS |
2395 | { |
2396 | vm_prot_t protection; | |
2397 | vm_prot_t max_protection; | |
2398 | vm_inherit_t inheritance; | |
2399 | boolean_t shared; | |
2400 | mach_port_t object_name; | |
2401 | vm_offset_t offset; | |
c5aa993b JM |
2402 | vm_size_t region_length = remaining_length; |
2403 | vm_address_t old_address = region_address; | |
2404 | ||
c906108c SS |
2405 | err = vm_region (task, |
2406 | ®ion_address, | |
2407 | ®ion_length, | |
2408 | &protection, | |
2409 | &max_protection, | |
2410 | &inheritance, | |
2411 | &shared, | |
2412 | &object_name, | |
2413 | &offset); | |
2414 | CHK_GOTO_OUT ("vm_region failed", err); | |
2415 | ||
0963b4bd | 2416 | /* Check for holes in memory. */ |
c906108c SS |
2417 | if (old_address != region_address) |
2418 | { | |
a9a758e3 | 2419 | warning (_("No memory at 0x%lx. Nothing written"), |
c906108c SS |
2420 | old_address); |
2421 | err = KERN_SUCCESS; | |
2422 | length = 0; | |
2423 | goto out; | |
2424 | } | |
2425 | ||
2426 | if (!(max_protection & VM_PROT_WRITE)) | |
2427 | { | |
a9a758e3 | 2428 | warning (_("Memory at address 0x%lx is unwritable. " |
0963b4bd | 2429 | "Nothing written"), |
c906108c SS |
2430 | old_address); |
2431 | err = KERN_SUCCESS; | |
2432 | length = 0; | |
2433 | goto out; | |
2434 | } | |
2435 | ||
0963b4bd | 2436 | /* Chain the regions for later use. */ |
8d749320 | 2437 | region_element = XOBNEW (®ion_obstack, struct vm_region_list); |
c5aa993b | 2438 | |
c906108c | 2439 | region_element->protection = protection; |
c5aa993b JM |
2440 | region_element->start = region_address; |
2441 | region_element->length = region_length; | |
c906108c | 2442 | |
0963b4bd | 2443 | /* Chain the regions along with protections. */ |
c906108c | 2444 | region_element->next = region_head; |
c5aa993b JM |
2445 | region_head = region_element; |
2446 | ||
c906108c SS |
2447 | region_address += region_length; |
2448 | remaining_length = remaining_length - region_length; | |
2449 | } | |
2450 | ||
2451 | /* If things fail after this, we give up. | |
942fd805 | 2452 | Somebody is messing up inferior_task's mappings. */ |
c5aa993b | 2453 | |
0963b4bd | 2454 | /* Enable writes to the chained vm regions. */ |
c906108c SS |
2455 | for (scan = region_head; scan; scan = scan->next) |
2456 | { | |
c906108c SS |
2457 | if (!(scan->protection & VM_PROT_WRITE)) |
2458 | { | |
2459 | err = vm_protect (task, | |
2460 | scan->start, | |
2461 | scan->length, | |
2462 | FALSE, | |
2463 | scan->protection | VM_PROT_WRITE); | |
2464 | CHK_GOTO_OUT ("vm_protect: enable write failed", err); | |
2465 | } | |
2466 | } | |
2467 | ||
2468 | err = vm_write (task, | |
2469 | low_address, | |
2470 | copied, | |
2471 | aligned_length); | |
2472 | CHK_GOTO_OUT ("vm_write failed", err); | |
c5aa993b | 2473 | |
0963b4bd | 2474 | /* Set up the original region protections, if they were changed. */ |
c906108c SS |
2475 | for (scan = region_head; scan; scan = scan->next) |
2476 | { | |
c906108c SS |
2477 | if (!(scan->protection & VM_PROT_WRITE)) |
2478 | { | |
2479 | err = vm_protect (task, | |
2480 | scan->start, | |
2481 | scan->length, | |
2482 | FALSE, | |
2483 | scan->protection); | |
2484 | CHK_GOTO_OUT ("vm_protect: enable write failed", err); | |
2485 | } | |
2486 | } | |
2487 | } | |
2488 | ||
c5aa993b | 2489 | out: |
c906108c SS |
2490 | if (deallocate) |
2491 | { | |
2492 | obstack_free (®ion_obstack, 0); | |
c5aa993b | 2493 | |
c906108c SS |
2494 | (void) vm_deallocate (mach_task_self (), |
2495 | copied, | |
2496 | copy_count); | |
2497 | } | |
2498 | ||
2499 | if (err != KERN_SUCCESS) | |
2500 | { | |
8a3fe4f8 | 2501 | warning (_("%s: %s"), errstr, mach_error_string (err)); |
c906108c SS |
2502 | return 0; |
2503 | } | |
2504 | ||
2505 | return length; | |
2506 | } | |
942fd805 | 2507 | |
c906108c | 2508 | \f |
9b3f3ee6 | 2509 | |
edcc890f YQ |
2510 | /* Implement the to_xfer_partial target_ops method for |
2511 | TARGET_OBJECT_MEMORY. */ | |
9b3f3ee6 | 2512 | |
9b409511 | 2513 | static enum target_xfer_status |
9b3f3ee6 | 2514 | gnu_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 | 2515 | CORE_ADDR memaddr, ULONGEST len, ULONGEST *xfered_len) |
c906108c | 2516 | { |
c289427b PA |
2517 | task_t task = (gnu_current_inf |
2518 | ? (gnu_current_inf->task | |
2519 | ? gnu_current_inf->task->port : 0) | |
942fd805 | 2520 | : 0); |
9b3f3ee6 | 2521 | int res; |
c906108c SS |
2522 | |
2523 | if (task == MACH_PORT_NULL) | |
9b3f3ee6 TS |
2524 | return TARGET_XFER_E_IO; |
2525 | ||
2526 | if (writebuf != NULL) | |
2527 | { | |
2528 | inf_debug (gnu_current_inf, "writing %s[%s] <-- %s", | |
b55e14c7 | 2529 | paddress (target_gdbarch (), memaddr), pulongest (len), |
9b3f3ee6 TS |
2530 | host_address_to_string (writebuf)); |
2531 | res = gnu_write_inferior (task, memaddr, writebuf, len); | |
2532 | } | |
c906108c SS |
2533 | else |
2534 | { | |
9b3f3ee6 | 2535 | inf_debug (gnu_current_inf, "reading %s[%s] --> %s", |
b55e14c7 | 2536 | paddress (target_gdbarch (), memaddr), pulongest (len), |
9b3f3ee6 TS |
2537 | host_address_to_string (readbuf)); |
2538 | res = gnu_read_inferior (task, memaddr, readbuf, len); | |
2539 | } | |
9b409511 | 2540 | gdb_assert (res >= 0); |
9b3f3ee6 TS |
2541 | if (res == 0) |
2542 | return TARGET_XFER_E_IO; | |
9b409511 YQ |
2543 | else |
2544 | { | |
2545 | *xfered_len = (ULONGEST) res; | |
2546 | return TARGET_XFER_OK; | |
2547 | } | |
9b3f3ee6 TS |
2548 | } |
2549 | ||
9c4ac400 ST |
2550 | /* GNU does not have auxv, but we can at least fake the AT_ENTRY entry for PIE |
2551 | binaries. */ | |
2552 | static enum target_xfer_status | |
2553 | gnu_xfer_auxv (gdb_byte *readbuf, const gdb_byte *writebuf, | |
2554 | CORE_ADDR memaddr, ULONGEST len, ULONGEST *xfered_len) | |
2555 | { | |
2556 | task_t task = (gnu_current_inf | |
2557 | ? (gnu_current_inf->task | |
2558 | ? gnu_current_inf->task->port : 0) | |
2559 | : 0); | |
2560 | process_t proc; | |
2561 | int res; | |
2562 | kern_return_t err; | |
2563 | vm_address_t entry; | |
2564 | ElfW(auxv_t) auxv[2]; | |
2565 | ||
2566 | if (task == MACH_PORT_NULL) | |
2567 | return TARGET_XFER_E_IO; | |
2568 | if (writebuf != NULL) | |
2569 | return TARGET_XFER_E_IO; | |
2570 | ||
2571 | if (memaddr == sizeof (auxv)) | |
2572 | return TARGET_XFER_EOF; | |
2573 | if (memaddr > sizeof (auxv)) | |
2574 | return TARGET_XFER_E_IO; | |
2575 | ||
2576 | err = proc_task2proc (proc_server, task, &proc); | |
2577 | if (err != 0) | |
2578 | return TARGET_XFER_E_IO; | |
2579 | ||
2580 | /* Get entry from proc server. */ | |
2581 | err = proc_get_entry (proc, &entry); | |
2582 | if (err != 0) | |
2583 | return TARGET_XFER_E_IO; | |
2584 | ||
2585 | /* Fake auxv entry. */ | |
2586 | auxv[0].a_type = AT_ENTRY; | |
2587 | auxv[0].a_un.a_val = entry; | |
2588 | auxv[1].a_type = AT_NULL; | |
2589 | auxv[1].a_un.a_val = 0; | |
2590 | ||
2591 | inf_debug (gnu_current_inf, "reading auxv %s[%s] --> %s", | |
2592 | paddress (target_gdbarch (), memaddr), pulongest (len), | |
2593 | host_address_to_string (readbuf)); | |
2594 | ||
2595 | if (memaddr + len > sizeof (auxv)) | |
2596 | len = sizeof (auxv) - memaddr; | |
2597 | ||
2598 | memcpy (readbuf, (gdb_byte *) &auxv + memaddr, len); | |
2599 | *xfered_len = len; | |
2600 | ||
2601 | return TARGET_XFER_OK; | |
2602 | } | |
2603 | ||
9b3f3ee6 TS |
2604 | /* Target to_xfer_partial implementation. */ |
2605 | ||
f6ac5f3d PA |
2606 | enum target_xfer_status |
2607 | gnu_nat_target::xfer_partial (enum target_object object, | |
2608 | const char *annex, gdb_byte *readbuf, | |
2609 | const gdb_byte *writebuf, ULONGEST offset, | |
2610 | ULONGEST len, ULONGEST *xfered_len) | |
9b3f3ee6 TS |
2611 | { |
2612 | switch (object) | |
2613 | { | |
2614 | case TARGET_OBJECT_MEMORY: | |
9b409511 | 2615 | return gnu_xfer_memory (readbuf, writebuf, offset, len, xfered_len); |
9c4ac400 ST |
2616 | case TARGET_OBJECT_AUXV: |
2617 | return gnu_xfer_auxv (readbuf, writebuf, offset, len, xfered_len); | |
9b3f3ee6 | 2618 | default: |
2ed4b548 | 2619 | return TARGET_XFER_E_IO; |
c906108c SS |
2620 | } |
2621 | } | |
942fd805 | 2622 | |
57e76fac | 2623 | /* Call FUNC on each memory region in the task. */ |
f6ac5f3d PA |
2624 | |
2625 | int | |
2626 | gnu_nat_target::find_memory_regions (find_memory_region_ftype func, | |
2627 | void *data) | |
57e76fac | 2628 | { |
0947023d | 2629 | kern_return_t err; |
57e76fac MS |
2630 | task_t task; |
2631 | vm_address_t region_address, last_region_address, last_region_end; | |
2632 | vm_prot_t last_protection; | |
2633 | ||
c289427b | 2634 | if (gnu_current_inf == 0 || gnu_current_inf->task == 0) |
57e76fac | 2635 | return 0; |
c289427b | 2636 | task = gnu_current_inf->task->port; |
57e76fac MS |
2637 | if (task == MACH_PORT_NULL) |
2638 | return 0; | |
2639 | ||
2640 | region_address = last_region_address = last_region_end = VM_MIN_ADDRESS; | |
2641 | last_protection = VM_PROT_NONE; | |
2642 | while (region_address < VM_MAX_ADDRESS) | |
2643 | { | |
2644 | vm_prot_t protection; | |
2645 | vm_prot_t max_protection; | |
2646 | vm_inherit_t inheritance; | |
2647 | boolean_t shared; | |
2648 | mach_port_t object_name; | |
2649 | vm_offset_t offset; | |
2650 | vm_size_t region_length = VM_MAX_ADDRESS - region_address; | |
2651 | vm_address_t old_address = region_address; | |
2652 | ||
2653 | err = vm_region (task, | |
2654 | ®ion_address, | |
2655 | ®ion_length, | |
2656 | &protection, | |
2657 | &max_protection, | |
2658 | &inheritance, | |
2659 | &shared, | |
2660 | &object_name, | |
2661 | &offset); | |
2662 | if (err == KERN_NO_SPACE) | |
2663 | break; | |
2664 | if (err != KERN_SUCCESS) | |
2665 | { | |
8a3fe4f8 | 2666 | warning (_("vm_region failed: %s"), mach_error_string (err)); |
57e76fac MS |
2667 | return -1; |
2668 | } | |
2669 | ||
2670 | if (protection == last_protection && region_address == last_region_end) | |
2671 | /* This region is contiguous with and indistinguishable from | |
2672 | the previous one, so we just extend that one. */ | |
2673 | last_region_end = region_address += region_length; | |
2674 | else | |
2675 | { | |
2676 | /* This region is distinct from the last one we saw, so report | |
2677 | that previous one. */ | |
2678 | if (last_protection != VM_PROT_NONE) | |
2679 | (*func) (last_region_address, | |
2680 | last_region_end - last_region_address, | |
2681 | last_protection & VM_PROT_READ, | |
2682 | last_protection & VM_PROT_WRITE, | |
2683 | last_protection & VM_PROT_EXECUTE, | |
4f69f4c2 | 2684 | 1, /* MODIFIED is unknown, pass it as true. */ |
57e76fac MS |
2685 | data); |
2686 | last_region_address = region_address; | |
2687 | last_region_end = region_address += region_length; | |
2688 | last_protection = protection; | |
2689 | } | |
2690 | } | |
47f21bcc | 2691 | |
1a113c93 MS |
2692 | /* Report the final region. */ |
2693 | if (last_region_end > last_region_address && last_protection != VM_PROT_NONE) | |
2694 | (*func) (last_region_address, last_region_end - last_region_address, | |
2695 | last_protection & VM_PROT_READ, | |
2696 | last_protection & VM_PROT_WRITE, | |
2697 | last_protection & VM_PROT_EXECUTE, | |
4f69f4c2 | 2698 | 1, /* MODIFIED is unknown, pass it as true. */ |
1a113c93 | 2699 | data); |
47f21bcc MS |
2700 | |
2701 | return 0; | |
57e76fac MS |
2702 | } |
2703 | ||
c906108c | 2704 | \f |
ed9a39eb | 2705 | /* Return printable description of proc. */ |
f90b2b1d | 2706 | char * |
ed9a39eb JM |
2707 | proc_string (struct proc *proc) |
2708 | { | |
2709 | static char tid_str[80]; | |
d8734c88 | 2710 | |
ed9a39eb | 2711 | if (proc_is_task (proc)) |
8c042590 | 2712 | xsnprintf (tid_str, sizeof (tid_str), "process %d", proc->inf->pid); |
ed9a39eb | 2713 | else |
8c042590 PM |
2714 | xsnprintf (tid_str, sizeof (tid_str), "Thread %d.%d", |
2715 | proc->inf->pid, proc->tid); | |
ed9a39eb JM |
2716 | return tid_str; |
2717 | } | |
2718 | ||
a068643d | 2719 | std::string |
f6ac5f3d | 2720 | gnu_nat_target::pid_to_str (ptid_t ptid) |
ed9a39eb | 2721 | { |
c289427b | 2722 | struct inf *inf = gnu_current_inf; |
e38504b3 | 2723 | int tid = ptid.lwp (); |
ed9a39eb JM |
2724 | struct proc *thread = inf_tid_to_thread (inf, tid); |
2725 | ||
2726 | if (thread) | |
2727 | return proc_string (thread); | |
2728 | else | |
a068643d | 2729 | return string_printf ("bogus thread id %d", tid); |
ed9a39eb | 2730 | } |
942fd805 | 2731 | |
c906108c | 2732 | \f |
c906108c SS |
2733 | /* User task commands. */ |
2734 | ||
28578e6b YQ |
2735 | static struct cmd_list_element *set_task_cmd_list = 0; |
2736 | static struct cmd_list_element *show_task_cmd_list = 0; | |
c906108c SS |
2737 | /* User thread commands. */ |
2738 | ||
2739 | /* Commands with a prefix of `set/show thread'. */ | |
2740 | extern struct cmd_list_element *thread_cmd_list; | |
2741 | struct cmd_list_element *set_thread_cmd_list = NULL; | |
2742 | struct cmd_list_element *show_thread_cmd_list = NULL; | |
2743 | ||
2744 | /* Commands with a prefix of `set/show thread default'. */ | |
2745 | struct cmd_list_element *set_thread_default_cmd_list = NULL; | |
2746 | struct cmd_list_element *show_thread_default_cmd_list = NULL; | |
2747 | ||
2748 | static void | |
981a3fb3 | 2749 | set_thread_cmd (const char *args, int from_tty) |
c906108c | 2750 | { |
0963b4bd MS |
2751 | printf_unfiltered ("\"set thread\" must be followed by the " |
2752 | "name of a thread property, or \"default\".\n"); | |
c906108c SS |
2753 | } |
2754 | ||
2755 | static void | |
981a3fb3 | 2756 | show_thread_cmd (const char *args, int from_tty) |
c906108c | 2757 | { |
0963b4bd MS |
2758 | printf_unfiltered ("\"show thread\" must be followed by the " |
2759 | "name of a thread property, or \"default\".\n"); | |
c906108c SS |
2760 | } |
2761 | ||
2762 | static void | |
981a3fb3 | 2763 | set_thread_default_cmd (const char *args, int from_tty) |
c906108c | 2764 | { |
0963b4bd MS |
2765 | printf_unfiltered ("\"set thread default\" must be followed " |
2766 | "by the name of a thread property.\n"); | |
c906108c SS |
2767 | } |
2768 | ||
2769 | static void | |
981a3fb3 | 2770 | show_thread_default_cmd (const char *args, int from_tty) |
c906108c | 2771 | { |
0963b4bd MS |
2772 | printf_unfiltered ("\"show thread default\" must be followed " |
2773 | "by the name of a thread property.\n"); | |
c906108c SS |
2774 | } |
2775 | ||
2776 | static int | |
924514e1 | 2777 | parse_int_arg (const char *args, const char *cmd_prefix) |
c906108c SS |
2778 | { |
2779 | if (args) | |
2780 | { | |
2781 | char *arg_end; | |
2782 | int val = strtoul (args, &arg_end, 10); | |
d8734c88 | 2783 | |
c906108c SS |
2784 | if (*args && *arg_end == '\0') |
2785 | return val; | |
2786 | } | |
0963b4bd MS |
2787 | error (_("Illegal argument for \"%s\" command, should be an integer."), |
2788 | cmd_prefix); | |
c906108c SS |
2789 | } |
2790 | ||
2791 | static int | |
924514e1 TS |
2792 | _parse_bool_arg (const char *args, const char *t_val, const char *f_val, |
2793 | const char *cmd_prefix) | |
c906108c SS |
2794 | { |
2795 | if (!args || strcmp (args, t_val) == 0) | |
2796 | return 1; | |
2797 | else if (strcmp (args, f_val) == 0) | |
2798 | return 0; | |
2799 | else | |
0963b4bd MS |
2800 | error (_("Illegal argument for \"%s\" command, " |
2801 | "should be \"%s\" or \"%s\"."), | |
c906108c SS |
2802 | cmd_prefix, t_val, f_val); |
2803 | } | |
2804 | ||
2805 | #define parse_bool_arg(args, cmd_prefix) \ | |
2806 | _parse_bool_arg (args, "on", "off", cmd_prefix) | |
2807 | ||
2808 | static void | |
924514e1 | 2809 | check_empty (const char *args, const char *cmd_prefix) |
c906108c SS |
2810 | { |
2811 | if (args) | |
8a3fe4f8 | 2812 | error (_("Garbage after \"%s\" command: `%s'"), cmd_prefix, args); |
c906108c SS |
2813 | } |
2814 | ||
2815 | /* Returns the alive thread named by INFERIOR_PID, or signals an error. */ | |
2816 | static struct proc * | |
fba45db2 | 2817 | cur_thread (void) |
c906108c SS |
2818 | { |
2819 | struct inf *inf = cur_inf (); | |
617fd3b5 | 2820 | struct proc *thread = inf_tid_to_thread (inf, |
e38504b3 | 2821 | inferior_ptid.lwp ()); |
c906108c | 2822 | if (!thread) |
8a3fe4f8 | 2823 | error (_("No current thread.")); |
c906108c SS |
2824 | return thread; |
2825 | } | |
2826 | ||
2827 | /* Returns the current inferior, but signals an error if it has no task. */ | |
2828 | static struct inf * | |
fba45db2 | 2829 | active_inf (void) |
c906108c SS |
2830 | { |
2831 | struct inf *inf = cur_inf (); | |
d8734c88 | 2832 | |
c5aa993b | 2833 | if (!inf->task) |
8a3fe4f8 | 2834 | error (_("No current process.")); |
c906108c SS |
2835 | return inf; |
2836 | } | |
942fd805 | 2837 | |
c906108c SS |
2838 | \f |
2839 | static void | |
785102a7 | 2840 | set_task_pause_cmd (int arg, int from_tty) |
c906108c SS |
2841 | { |
2842 | struct inf *inf = cur_inf (); | |
2843 | int old_sc = inf->pause_sc; | |
2844 | ||
785102a7 | 2845 | inf->pause_sc = arg; |
c906108c SS |
2846 | |
2847 | if (old_sc == 0 && inf->pause_sc != 0) | |
2848 | /* If the task is currently unsuspended, immediately suspend it, | |
2849 | otherwise wait until the next time it gets control. */ | |
2850 | inf_suspend (inf); | |
2851 | } | |
2852 | ||
785102a7 | 2853 | static void |
5fed81ff | 2854 | set_task_pause_cmd (const char *args, int from_tty) |
785102a7 TS |
2855 | { |
2856 | set_task_pause_cmd (parse_bool_arg (args, "set task pause"), from_tty); | |
2857 | } | |
2858 | ||
c906108c | 2859 | static void |
5fed81ff | 2860 | show_task_pause_cmd (const char *args, int from_tty) |
c906108c SS |
2861 | { |
2862 | struct inf *inf = cur_inf (); | |
d8734c88 | 2863 | |
c906108c SS |
2864 | check_empty (args, "show task pause"); |
2865 | printf_unfiltered ("The inferior task %s suspended while gdb has control.\n", | |
2866 | inf->task | |
2867 | ? (inf->pause_sc == 0 ? "isn't" : "is") | |
2868 | : (inf->pause_sc == 0 ? "won't be" : "will be")); | |
2869 | } | |
2870 | ||
2871 | static void | |
5fed81ff | 2872 | set_task_detach_sc_cmd (const char *args, int from_tty) |
c906108c | 2873 | { |
0963b4bd MS |
2874 | cur_inf ()->detach_sc = parse_int_arg (args, |
2875 | "set task detach-suspend-count"); | |
c906108c SS |
2876 | } |
2877 | ||
2878 | static void | |
5fed81ff | 2879 | show_task_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
2880 | { |
2881 | check_empty (args, "show task detach-suspend-count"); | |
0963b4bd MS |
2882 | printf_unfiltered ("The inferior task will be left with a " |
2883 | "suspend count of %d when detaching.\n", | |
c906108c SS |
2884 | cur_inf ()->detach_sc); |
2885 | } | |
942fd805 | 2886 | |
c906108c SS |
2887 | \f |
2888 | static void | |
5fed81ff | 2889 | set_thread_default_pause_cmd (const char *args, int from_tty) |
c906108c SS |
2890 | { |
2891 | struct inf *inf = cur_inf (); | |
d8734c88 | 2892 | |
c906108c SS |
2893 | inf->default_thread_pause_sc = |
2894 | parse_bool_arg (args, "set thread default pause") ? 0 : 1; | |
2895 | } | |
2896 | ||
2897 | static void | |
5fed81ff | 2898 | show_thread_default_pause_cmd (const char *args, int from_tty) |
c906108c SS |
2899 | { |
2900 | struct inf *inf = cur_inf (); | |
2901 | int sc = inf->default_thread_pause_sc; | |
d8734c88 | 2902 | |
c906108c SS |
2903 | check_empty (args, "show thread default pause"); |
2904 | printf_unfiltered ("New threads %s suspended while gdb has control%s.\n", | |
2905 | sc ? "are" : "aren't", | |
2906 | !sc && inf->pause_sc ? " (but the task is)" : ""); | |
2907 | } | |
2908 | ||
2909 | static void | |
5fed81ff | 2910 | set_thread_default_run_cmd (const char *args, int from_tty) |
c906108c SS |
2911 | { |
2912 | struct inf *inf = cur_inf (); | |
d8734c88 | 2913 | |
c906108c SS |
2914 | inf->default_thread_run_sc = |
2915 | parse_bool_arg (args, "set thread default run") ? 0 : 1; | |
2916 | } | |
2917 | ||
2918 | static void | |
5fed81ff | 2919 | show_thread_default_run_cmd (const char *args, int from_tty) |
c906108c SS |
2920 | { |
2921 | struct inf *inf = cur_inf (); | |
d8734c88 | 2922 | |
c906108c SS |
2923 | check_empty (args, "show thread default run"); |
2924 | printf_unfiltered ("New threads %s allowed to run.\n", | |
2925 | inf->default_thread_run_sc == 0 ? "are" : "aren't"); | |
2926 | } | |
2927 | ||
2928 | static void | |
5fed81ff | 2929 | set_thread_default_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
2930 | { |
2931 | cur_inf ()->default_thread_detach_sc = | |
2932 | parse_int_arg (args, "set thread default detach-suspend-count"); | |
2933 | } | |
2934 | ||
2935 | static void | |
5fed81ff | 2936 | show_thread_default_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
2937 | { |
2938 | check_empty (args, "show thread default detach-suspend-count"); | |
2939 | printf_unfiltered ("New threads will get a detach-suspend-count of %d.\n", | |
2940 | cur_inf ()->default_thread_detach_sc); | |
2941 | } | |
942fd805 | 2942 | |
c906108c SS |
2943 | \f |
2944 | /* Steal a send right called NAME in the inferior task, and make it PROC's | |
2945 | saved exception port. */ | |
2946 | static void | |
2947 | steal_exc_port (struct proc *proc, mach_port_t name) | |
2948 | { | |
0947023d | 2949 | kern_return_t err; |
c906108c SS |
2950 | mach_port_t port; |
2951 | mach_msg_type_name_t port_type; | |
2952 | ||
2953 | if (!proc || !proc->inf->task) | |
8a3fe4f8 | 2954 | error (_("No inferior task.")); |
c906108c SS |
2955 | |
2956 | err = mach_port_extract_right (proc->inf->task->port, | |
2957 | name, MACH_MSG_TYPE_COPY_SEND, | |
2958 | &port, &port_type); | |
2959 | if (err) | |
a9a758e3 | 2960 | error (_("Couldn't extract send right %lu from inferior: %s"), |
dc672865 | 2961 | name, safe_strerror (err)); |
c906108c SS |
2962 | |
2963 | if (proc->saved_exc_port) | |
2964 | /* Get rid of our reference to the old one. */ | |
2965 | mach_port_deallocate (mach_task_self (), proc->saved_exc_port); | |
2966 | ||
2967 | proc->saved_exc_port = port; | |
2968 | ||
c5aa993b | 2969 | if (!proc->exc_port) |
0963b4bd MS |
2970 | /* If PROC is a thread, we may not have set its exception port |
2971 | before. We can't use proc_steal_exc_port because it also sets | |
2972 | saved_exc_port. */ | |
c906108c | 2973 | { |
c5aa993b JM |
2974 | proc->exc_port = proc->inf->event_port; |
2975 | err = proc_set_exception_port (proc, proc->exc_port); | |
8a3fe4f8 | 2976 | error (_("Can't set exception port for %s: %s"), |
dc672865 | 2977 | proc_string (proc), safe_strerror (err)); |
c906108c SS |
2978 | } |
2979 | } | |
942fd805 | 2980 | |
c906108c | 2981 | static void |
5fed81ff | 2982 | set_task_exc_port_cmd (const char *args, int from_tty) |
c906108c SS |
2983 | { |
2984 | struct inf *inf = cur_inf (); | |
d8734c88 | 2985 | |
c906108c | 2986 | if (!args) |
8a3fe4f8 | 2987 | error (_("No argument to \"set task exception-port\" command.")); |
c906108c SS |
2988 | steal_exc_port (inf->task, parse_and_eval_address (args)); |
2989 | } | |
2990 | ||
c5aa993b | 2991 | static void |
5fed81ff | 2992 | set_stopped_cmd (const char *args, int from_tty) |
c906108c SS |
2993 | { |
2994 | cur_inf ()->stopped = _parse_bool_arg (args, "yes", "no", "set stopped"); | |
2995 | } | |
2996 | ||
2997 | static void | |
5fed81ff | 2998 | show_stopped_cmd (const char *args, int from_tty) |
c906108c SS |
2999 | { |
3000 | struct inf *inf = active_inf (); | |
d8734c88 | 3001 | |
c906108c SS |
3002 | check_empty (args, "show stopped"); |
3003 | printf_unfiltered ("The inferior process %s stopped.\n", | |
3004 | inf->stopped ? "is" : "isn't"); | |
3005 | } | |
3006 | ||
c5aa993b | 3007 | static void |
5fed81ff | 3008 | set_sig_thread_cmd (const char *args, int from_tty) |
c906108c | 3009 | { |
c906108c SS |
3010 | struct inf *inf = cur_inf (); |
3011 | ||
c5aa993b | 3012 | if (!args || (!isdigit (*args) && strcmp (args, "none") != 0)) |
8a3fe4f8 | 3013 | error (_("Illegal argument to \"set signal-thread\" command.\n" |
c3187fa5 | 3014 | "Should be a thread ID, or \"none\".")); |
c906108c SS |
3015 | |
3016 | if (strcmp (args, "none") == 0) | |
3017 | inf->signal_thread = 0; | |
3018 | else | |
3019 | { | |
c3187fa5 | 3020 | struct thread_info *tp = parse_thread_id (args, NULL); |
e38504b3 | 3021 | inf->signal_thread = inf_tid_to_thread (inf, tp->ptid.lwp ()); |
c906108c SS |
3022 | } |
3023 | } | |
3024 | ||
3025 | static void | |
5fed81ff | 3026 | show_sig_thread_cmd (const char *args, int from_tty) |
c906108c SS |
3027 | { |
3028 | struct inf *inf = active_inf (); | |
d8734c88 | 3029 | |
c906108c SS |
3030 | check_empty (args, "show signal-thread"); |
3031 | if (inf->signal_thread) | |
3032 | printf_unfiltered ("The signal thread is %s.\n", | |
3033 | proc_string (inf->signal_thread)); | |
3034 | else | |
3035 | printf_unfiltered ("There is no signal thread.\n"); | |
3036 | } | |
942fd805 | 3037 | |
c906108c | 3038 | \f |
c5aa993b | 3039 | static void |
785102a7 | 3040 | set_signals_cmd (int arg, int from_tty) |
c906108c | 3041 | { |
c906108c SS |
3042 | struct inf *inf = cur_inf (); |
3043 | ||
785102a7 | 3044 | inf->want_signals = arg; |
c906108c SS |
3045 | |
3046 | if (inf->task && inf->want_signals != inf->traced) | |
3047 | /* Make this take effect immediately in a running process. */ | |
3048 | inf_set_traced (inf, inf->want_signals); | |
3049 | } | |
3050 | ||
785102a7 | 3051 | static void |
5fed81ff | 3052 | set_signals_cmd (const char *args, int from_tty) |
785102a7 TS |
3053 | { |
3054 | set_signals_cmd(parse_bool_arg (args, "set signals"), from_tty); | |
3055 | } | |
3056 | ||
c906108c | 3057 | static void |
5fed81ff | 3058 | show_signals_cmd (const char *args, int from_tty) |
c906108c SS |
3059 | { |
3060 | struct inf *inf = cur_inf (); | |
d8734c88 | 3061 | |
c906108c SS |
3062 | check_empty (args, "show signals"); |
3063 | printf_unfiltered ("The inferior process's signals %s intercepted.\n", | |
3064 | inf->task | |
3065 | ? (inf->traced ? "are" : "aren't") | |
3066 | : (inf->want_signals ? "will be" : "won't be")); | |
3067 | } | |
3068 | ||
c5aa993b | 3069 | static void |
785102a7 | 3070 | set_exceptions_cmd (int arg, int from_tty) |
c906108c SS |
3071 | { |
3072 | struct inf *inf = cur_inf (); | |
c906108c | 3073 | |
c26e9cbb YQ |
3074 | /* Make this take effect immediately in a running process. */ |
3075 | /* XXX */ ; | |
c906108c | 3076 | |
785102a7 TS |
3077 | inf->want_exceptions = arg; |
3078 | } | |
3079 | ||
3080 | static void | |
5fed81ff | 3081 | set_exceptions_cmd (const char *args, int from_tty) |
785102a7 TS |
3082 | { |
3083 | set_exceptions_cmd (parse_bool_arg (args, "set exceptions"), from_tty); | |
c906108c SS |
3084 | } |
3085 | ||
3086 | static void | |
5fed81ff | 3087 | show_exceptions_cmd (const char *args, int from_tty) |
c906108c SS |
3088 | { |
3089 | struct inf *inf = cur_inf (); | |
d8734c88 | 3090 | |
c906108c SS |
3091 | check_empty (args, "show exceptions"); |
3092 | printf_unfiltered ("Exceptions in the inferior %s trapped.\n", | |
3093 | inf->task | |
3094 | ? (inf->want_exceptions ? "are" : "aren't") | |
3095 | : (inf->want_exceptions ? "will be" : "won't be")); | |
3096 | } | |
942fd805 | 3097 | |
c906108c SS |
3098 | \f |
3099 | static void | |
981a3fb3 | 3100 | set_task_cmd (const char *args, int from_tty) |
c906108c | 3101 | { |
942fd805 MK |
3102 | printf_unfiltered ("\"set task\" must be followed by the name" |
3103 | " of a task property.\n"); | |
c906108c SS |
3104 | } |
3105 | ||
3106 | static void | |
981a3fb3 | 3107 | show_task_cmd (const char *args, int from_tty) |
c906108c SS |
3108 | { |
3109 | struct inf *inf = cur_inf (); | |
3110 | ||
3111 | check_empty (args, "show task"); | |
3112 | ||
3113 | show_signals_cmd (0, from_tty); | |
3114 | show_exceptions_cmd (0, from_tty); | |
3115 | show_task_pause_cmd (0, from_tty); | |
3116 | ||
3117 | if (inf->pause_sc == 0) | |
3118 | show_thread_default_pause_cmd (0, from_tty); | |
3119 | show_thread_default_run_cmd (0, from_tty); | |
3120 | ||
3121 | if (inf->task) | |
3122 | { | |
3123 | show_stopped_cmd (0, from_tty); | |
3124 | show_sig_thread_cmd (0, from_tty); | |
3125 | } | |
3126 | ||
3127 | if (inf->detach_sc != 0) | |
3128 | show_task_detach_sc_cmd (0, from_tty); | |
3129 | if (inf->default_thread_detach_sc != 0) | |
3130 | show_thread_default_detach_sc_cmd (0, from_tty); | |
3131 | } | |
942fd805 | 3132 | |
c906108c SS |
3133 | \f |
3134 | static void | |
5fed81ff | 3135 | set_noninvasive_cmd (const char *args, int from_tty) |
c906108c SS |
3136 | { |
3137 | /* Invert the sense of the arg for each component. */ | |
785102a7 | 3138 | int inv_arg = parse_bool_arg (args, "set noninvasive") ? 0 : 1; |
c906108c | 3139 | |
785102a7 TS |
3140 | set_task_pause_cmd (inv_arg, from_tty); |
3141 | set_signals_cmd (inv_arg, from_tty); | |
3142 | set_exceptions_cmd (inv_arg, from_tty); | |
c906108c | 3143 | } |
942fd805 | 3144 | |
c906108c SS |
3145 | \f |
3146 | static void | |
0cc6f43d | 3147 | info_port_rights (const char *args, mach_port_type_t only) |
c906108c SS |
3148 | { |
3149 | struct inf *inf = active_inf (); | |
3d6d86c6 | 3150 | struct value *vmark = value_mark (); |
c906108c SS |
3151 | |
3152 | if (args) | |
3153 | /* Explicit list of port rights. */ | |
3154 | { | |
3155 | while (*args) | |
3156 | { | |
3d6d86c6 | 3157 | struct value *val = parse_to_comma_and_eval (&args); |
c906108c SS |
3158 | long right = value_as_long (val); |
3159 | error_t err = | |
d8734c88 MS |
3160 | print_port_info (right, 0, inf->task->port, PORTINFO_DETAILS, |
3161 | stdout); | |
3162 | ||
c906108c | 3163 | if (err) |
8a3fe4f8 | 3164 | error (_("%ld: %s."), right, safe_strerror (err)); |
c906108c SS |
3165 | } |
3166 | } | |
3167 | else | |
3168 | /* Print all of them. */ | |
3169 | { | |
3170 | error_t err = | |
d8734c88 MS |
3171 | print_task_ports_info (inf->task->port, only, PORTINFO_DETAILS, |
3172 | stdout); | |
c906108c | 3173 | if (err) |
8a3fe4f8 | 3174 | error (_("%s."), safe_strerror (err)); |
c906108c SS |
3175 | } |
3176 | ||
3177 | value_free_to_mark (vmark); | |
3178 | } | |
3179 | ||
3180 | static void | |
1d12d88f | 3181 | info_send_rights_cmd (const char *args, int from_tty) |
c906108c SS |
3182 | { |
3183 | info_port_rights (args, MACH_PORT_TYPE_SEND); | |
3184 | } | |
942fd805 | 3185 | |
c906108c | 3186 | static void |
1d12d88f | 3187 | info_recv_rights_cmd (const char *args, int from_tty) |
c906108c SS |
3188 | { |
3189 | info_port_rights (args, MACH_PORT_TYPE_RECEIVE); | |
3190 | } | |
942fd805 | 3191 | |
c906108c | 3192 | static void |
1d12d88f | 3193 | info_port_sets_cmd (const char *args, int from_tty) |
c906108c SS |
3194 | { |
3195 | info_port_rights (args, MACH_PORT_TYPE_PORT_SET); | |
3196 | } | |
942fd805 | 3197 | |
c906108c | 3198 | static void |
1d12d88f | 3199 | info_dead_names_cmd (const char *args, int from_tty) |
c906108c SS |
3200 | { |
3201 | info_port_rights (args, MACH_PORT_TYPE_DEAD_NAME); | |
3202 | } | |
942fd805 | 3203 | |
c906108c | 3204 | static void |
1d12d88f | 3205 | info_port_rights_cmd (const char *args, int from_tty) |
c906108c SS |
3206 | { |
3207 | info_port_rights (args, ~0); | |
3208 | } | |
942fd805 | 3209 | |
c906108c | 3210 | \f |
c5aa993b | 3211 | static void |
942fd805 | 3212 | add_task_commands (void) |
c906108c | 3213 | { |
1a966eab AC |
3214 | add_cmd ("pause", class_run, set_thread_default_pause_cmd, _("\ |
3215 | Set whether the new threads are suspended while gdb has control.\n\ | |
942fd805 MK |
3216 | This property normally has no effect because the whole task is\n\ |
3217 | suspended, however, that may be disabled with \"set task pause off\".\n\ | |
1a966eab | 3218 | The default value is \"off\"."), |
c906108c | 3219 | &set_thread_default_cmd_list); |
1a966eab AC |
3220 | add_cmd ("pause", no_class, show_thread_default_pause_cmd, _("\ |
3221 | Show whether new threads are suspended while gdb has control."), | |
c906108c | 3222 | &show_thread_default_cmd_list); |
942fd805 | 3223 | |
1a966eab AC |
3224 | add_cmd ("run", class_run, set_thread_default_run_cmd, _("\ |
3225 | Set whether new threads are allowed to run (once gdb has noticed them)."), | |
c906108c | 3226 | &set_thread_default_cmd_list); |
1a966eab AC |
3227 | add_cmd ("run", no_class, show_thread_default_run_cmd, _("\ |
3228 | Show whether new threads are allowed to run (once gdb has noticed them)."), | |
c906108c | 3229 | &show_thread_default_cmd_list); |
942fd805 | 3230 | |
c906108c | 3231 | add_cmd ("detach-suspend-count", class_run, set_thread_default_detach_sc_cmd, |
1a966eab | 3232 | _("Set the default detach-suspend-count value for new threads."), |
c906108c SS |
3233 | &set_thread_default_cmd_list); |
3234 | add_cmd ("detach-suspend-count", no_class, show_thread_default_detach_sc_cmd, | |
1a966eab | 3235 | _("Show the default detach-suspend-count value for new threads."), |
c906108c SS |
3236 | &show_thread_default_cmd_list); |
3237 | ||
1a966eab AC |
3238 | add_cmd ("signals", class_run, set_signals_cmd, _("\ |
3239 | Set whether the inferior process's signals will be intercepted.\n\ | |
3240 | Mach exceptions (such as breakpoint traps) are not affected."), | |
c906108c SS |
3241 | &setlist); |
3242 | add_alias_cmd ("sigs", "signals", class_run, 1, &setlist); | |
1a966eab AC |
3243 | add_cmd ("signals", no_class, show_signals_cmd, _("\ |
3244 | Show whether the inferior process's signals will be intercepted."), | |
c906108c SS |
3245 | &showlist); |
3246 | add_alias_cmd ("sigs", "signals", no_class, 1, &showlist); | |
3247 | ||
1a966eab AC |
3248 | add_cmd ("signal-thread", class_run, set_sig_thread_cmd, _("\ |
3249 | Set the thread that gdb thinks is the libc signal thread.\n\ | |
3250 | This thread is run when delivering a signal to a non-stopped process."), | |
c906108c SS |
3251 | &setlist); |
3252 | add_alias_cmd ("sigthread", "signal-thread", class_run, 1, &setlist); | |
1a966eab AC |
3253 | add_cmd ("signal-thread", no_class, show_sig_thread_cmd, _("\ |
3254 | Set the thread that gdb thinks is the libc signal thread."), | |
c906108c SS |
3255 | &showlist); |
3256 | add_alias_cmd ("sigthread", "signal-thread", no_class, 1, &showlist); | |
3257 | ||
1a966eab AC |
3258 | add_cmd ("stopped", class_run, set_stopped_cmd, _("\ |
3259 | Set whether gdb thinks the inferior process is stopped as with SIGSTOP.\n\ | |
3260 | Stopped process will be continued by sending them a signal."), | |
c906108c | 3261 | &setlist); |
fe79276f | 3262 | add_cmd ("stopped", no_class, show_stopped_cmd, _("\ |
1a966eab | 3263 | Show whether gdb thinks the inferior process is stopped as with SIGSTOP."), |
c906108c SS |
3264 | &showlist); |
3265 | ||
1a966eab AC |
3266 | add_cmd ("exceptions", class_run, set_exceptions_cmd, _("\ |
3267 | Set whether exceptions in the inferior process will be trapped.\n\ | |
942fd805 | 3268 | When exceptions are turned off, neither breakpoints nor single-stepping\n\ |
1a966eab | 3269 | will work."), |
c906108c SS |
3270 | &setlist); |
3271 | /* Allow `set exc' despite conflict with `set exception-port'. */ | |
3272 | add_alias_cmd ("exc", "exceptions", class_run, 1, &setlist); | |
1a966eab AC |
3273 | add_cmd ("exceptions", no_class, show_exceptions_cmd, _("\ |
3274 | Show whether exceptions in the inferior process will be trapped."), | |
c906108c SS |
3275 | &showlist); |
3276 | ||
3277 | add_prefix_cmd ("task", no_class, set_task_cmd, | |
1bedd215 | 3278 | _("Command prefix for setting task attributes."), |
c906108c SS |
3279 | &set_task_cmd_list, "set task ", 0, &setlist); |
3280 | add_prefix_cmd ("task", no_class, show_task_cmd, | |
1bedd215 | 3281 | _("Command prefix for showing task attributes."), |
c906108c SS |
3282 | &show_task_cmd_list, "show task ", 0, &showlist); |
3283 | ||
1a966eab AC |
3284 | add_cmd ("pause", class_run, set_task_pause_cmd, _("\ |
3285 | Set whether the task is suspended while gdb has control.\n\ | |
942fd805 MK |
3286 | A value of \"on\" takes effect immediately, otherwise nothing happens\n\ |
3287 | until the next time the program is continued.\n\ | |
3288 | When setting this to \"off\", \"set thread default pause on\" can be\n\ | |
1a966eab | 3289 | used to pause individual threads by default instead."), |
c906108c SS |
3290 | &set_task_cmd_list); |
3291 | add_cmd ("pause", no_class, show_task_pause_cmd, | |
1a966eab | 3292 | _("Show whether the task is suspended while gdb has control."), |
c906108c | 3293 | &show_task_cmd_list); |
942fd805 | 3294 | |
c906108c | 3295 | add_cmd ("detach-suspend-count", class_run, set_task_detach_sc_cmd, |
1a966eab | 3296 | _("Set the suspend count will leave on the thread when detaching."), |
c906108c SS |
3297 | &set_task_cmd_list); |
3298 | add_cmd ("detach-suspend-count", no_class, show_task_detach_sc_cmd, | |
0963b4bd MS |
3299 | _("Show the suspend count will leave " |
3300 | "on the thread when detaching."), | |
c906108c SS |
3301 | &show_task_cmd_list); |
3302 | ||
1a966eab AC |
3303 | add_cmd ("exception-port", no_class, set_task_exc_port_cmd, _("\ |
3304 | Set the task exception port to which we forward exceptions.\n\ | |
3305 | The argument should be the value of the send right in the task."), | |
c906108c SS |
3306 | &set_task_cmd_list); |
3307 | add_alias_cmd ("excp", "exception-port", no_class, 1, &set_task_cmd_list); | |
942fd805 MK |
3308 | add_alias_cmd ("exc-port", "exception-port", no_class, 1, |
3309 | &set_task_cmd_list); | |
c906108c SS |
3310 | |
3311 | /* A convenient way of turning on all options require to noninvasively | |
3312 | debug running tasks. */ | |
1a966eab AC |
3313 | add_cmd ("noninvasive", no_class, set_noninvasive_cmd, _("\ |
3314 | Set task options so that we interfere as little as possible.\n\ | |
942fd805 | 3315 | This is the same as setting `task pause', `exceptions', and\n\ |
1a966eab | 3316 | `signals' to the opposite value."), |
c906108c SS |
3317 | &setlist); |
3318 | ||
3319 | /* Commands to show information about the task's ports. */ | |
5f515954 AB |
3320 | add_info ("send-rights", info_send_rights_cmd, |
3321 | _("Show information about the task's send rights")); | |
3322 | add_info ("receive-rights", info_recv_rights_cmd, | |
3323 | _("Show information about the task's receive rights")); | |
3324 | add_info ("port-rights", info_port_rights_cmd, | |
3325 | _("Show information about the task's port rights")); | |
3326 | add_info ("port-sets", info_port_sets_cmd, | |
3327 | _("Show information about the task's port sets")); | |
3328 | add_info ("dead-names", info_dead_names_cmd, | |
3329 | _("Show information about the task's dead names")); | |
c906108c SS |
3330 | add_info_alias ("ports", "port-rights", 1); |
3331 | add_info_alias ("port", "port-rights", 1); | |
3332 | add_info_alias ("psets", "port-sets", 1); | |
3333 | } | |
c906108c | 3334 | |
942fd805 | 3335 | \f |
c906108c | 3336 | static void |
5fed81ff | 3337 | set_thread_pause_cmd (const char *args, int from_tty) |
c906108c SS |
3338 | { |
3339 | struct proc *thread = cur_thread (); | |
3340 | int old_sc = thread->pause_sc; | |
d8734c88 | 3341 | |
c906108c SS |
3342 | thread->pause_sc = parse_bool_arg (args, "set thread pause"); |
3343 | if (old_sc == 0 && thread->pause_sc != 0 && thread->inf->pause_sc == 0) | |
3344 | /* If the task is currently unsuspended, immediately suspend it, | |
3345 | otherwise wait until the next time it gets control. */ | |
3346 | inf_suspend (thread->inf); | |
3347 | } | |
3348 | ||
3349 | static void | |
5fed81ff | 3350 | show_thread_pause_cmd (const char *args, int from_tty) |
c906108c SS |
3351 | { |
3352 | struct proc *thread = cur_thread (); | |
3353 | int sc = thread->pause_sc; | |
d8734c88 | 3354 | |
c906108c SS |
3355 | check_empty (args, "show task pause"); |
3356 | printf_unfiltered ("Thread %s %s suspended while gdb has control%s.\n", | |
3357 | proc_string (thread), | |
3358 | sc ? "is" : "isn't", | |
942fd805 | 3359 | !sc && thread->inf->pause_sc ? " (but the task is)" : ""); |
c906108c SS |
3360 | } |
3361 | ||
3362 | static void | |
5fed81ff | 3363 | set_thread_run_cmd (const char *args, int from_tty) |
c906108c SS |
3364 | { |
3365 | struct proc *thread = cur_thread (); | |
d8734c88 | 3366 | |
c906108c SS |
3367 | thread->run_sc = parse_bool_arg (args, "set thread run") ? 0 : 1; |
3368 | } | |
3369 | ||
3370 | static void | |
5fed81ff | 3371 | show_thread_run_cmd (const char *args, int from_tty) |
c906108c SS |
3372 | { |
3373 | struct proc *thread = cur_thread (); | |
d8734c88 | 3374 | |
c906108c SS |
3375 | check_empty (args, "show thread run"); |
3376 | printf_unfiltered ("Thread %s %s allowed to run.", | |
3377 | proc_string (thread), | |
3378 | thread->run_sc == 0 ? "is" : "isn't"); | |
3379 | } | |
3380 | ||
3381 | static void | |
5fed81ff | 3382 | set_thread_detach_sc_cmd (const char *args, int from_tty) |
c906108c | 3383 | { |
942fd805 MK |
3384 | cur_thread ()->detach_sc = parse_int_arg (args, |
3385 | "set thread detach-suspend-count"); | |
c906108c SS |
3386 | } |
3387 | ||
3388 | static void | |
5fed81ff | 3389 | show_thread_detach_sc_cmd (const char *args, int from_tty) |
c906108c SS |
3390 | { |
3391 | struct proc *thread = cur_thread (); | |
d8734c88 | 3392 | |
c906108c | 3393 | check_empty (args, "show thread detach-suspend-count"); |
942fd805 MK |
3394 | printf_unfiltered ("Thread %s will be left with a suspend count" |
3395 | " of %d when detaching.\n", | |
c906108c SS |
3396 | proc_string (thread), |
3397 | thread->detach_sc); | |
3398 | } | |
3399 | ||
3400 | static void | |
5fed81ff | 3401 | set_thread_exc_port_cmd (const char *args, int from_tty) |
c906108c SS |
3402 | { |
3403 | struct proc *thread = cur_thread (); | |
d8734c88 | 3404 | |
c906108c | 3405 | if (!args) |
8a3fe4f8 | 3406 | error (_("No argument to \"set thread exception-port\" command.")); |
c906108c SS |
3407 | steal_exc_port (thread, parse_and_eval_address (args)); |
3408 | } | |
3409 | ||
3410 | #if 0 | |
3411 | static void | |
3412 | show_thread_cmd (char *args, int from_tty) | |
3413 | { | |
3414 | struct proc *thread = cur_thread (); | |
d8734c88 | 3415 | |
c906108c SS |
3416 | check_empty (args, "show thread"); |
3417 | show_thread_run_cmd (0, from_tty); | |
3418 | show_thread_pause_cmd (0, from_tty); | |
3419 | if (thread->detach_sc != 0) | |
3420 | show_thread_detach_sc_cmd (0, from_tty); | |
3421 | } | |
3422 | #endif | |
3423 | ||
3424 | static void | |
5fed81ff | 3425 | thread_takeover_sc_cmd (const char *args, int from_tty) |
c906108c SS |
3426 | { |
3427 | struct proc *thread = cur_thread (); | |
d8734c88 | 3428 | |
c906108c SS |
3429 | thread_basic_info_data_t _info; |
3430 | thread_basic_info_t info = &_info; | |
3431 | mach_msg_type_number_t info_len = THREAD_BASIC_INFO_COUNT; | |
cabb5f06 TS |
3432 | kern_return_t err |
3433 | = mach_thread_info (thread->port, THREAD_BASIC_INFO, | |
3434 | (int *) &info, &info_len); | |
c906108c | 3435 | if (err) |
8a3fe4f8 | 3436 | error (("%s."), safe_strerror (err)); |
c906108c SS |
3437 | thread->sc = info->suspend_count; |
3438 | if (from_tty) | |
3439 | printf_unfiltered ("Suspend count was %d.\n", thread->sc); | |
3440 | if (info != &_info) | |
942fd805 MK |
3441 | vm_deallocate (mach_task_self (), (vm_address_t) info, |
3442 | info_len * sizeof (int)); | |
c906108c SS |
3443 | } |
3444 | ||
942fd805 MK |
3445 | \f |
3446 | static void | |
3447 | add_thread_commands (void) | |
c906108c SS |
3448 | { |
3449 | add_prefix_cmd ("thread", no_class, set_thread_cmd, | |
1bedd215 | 3450 | _("Command prefix for setting thread properties."), |
c906108c SS |
3451 | &set_thread_cmd_list, "set thread ", 0, &setlist); |
3452 | add_prefix_cmd ("default", no_class, show_thread_cmd, | |
1bedd215 | 3453 | _("Command prefix for setting default thread properties."), |
c906108c SS |
3454 | &set_thread_default_cmd_list, "set thread default ", 0, |
3455 | &set_thread_cmd_list); | |
3456 | add_prefix_cmd ("thread", no_class, set_thread_default_cmd, | |
1bedd215 | 3457 | _("Command prefix for showing thread properties."), |
c906108c SS |
3458 | &show_thread_cmd_list, "show thread ", 0, &showlist); |
3459 | add_prefix_cmd ("default", no_class, show_thread_default_cmd, | |
1bedd215 | 3460 | _("Command prefix for showing default thread properties."), |
c906108c SS |
3461 | &show_thread_default_cmd_list, "show thread default ", 0, |
3462 | &show_thread_cmd_list); | |
3463 | ||
1a966eab AC |
3464 | add_cmd ("pause", class_run, set_thread_pause_cmd, _("\ |
3465 | Set whether the current thread is suspended while gdb has control.\n\ | |
942fd805 MK |
3466 | A value of \"on\" takes effect immediately, otherwise nothing happens\n\ |
3467 | until the next time the program is continued. This property normally\n\ | |
3468 | has no effect because the whole task is suspended, however, that may\n\ | |
3469 | be disabled with \"set task pause off\".\n\ | |
1a966eab | 3470 | The default value is \"off\"."), |
c906108c | 3471 | &set_thread_cmd_list); |
1a966eab AC |
3472 | add_cmd ("pause", no_class, show_thread_pause_cmd, _("\ |
3473 | Show whether the current thread is suspended while gdb has control."), | |
c906108c SS |
3474 | &show_thread_cmd_list); |
3475 | ||
3476 | add_cmd ("run", class_run, set_thread_run_cmd, | |
1a966eab | 3477 | _("Set whether the current thread is allowed to run."), |
c906108c SS |
3478 | &set_thread_cmd_list); |
3479 | add_cmd ("run", no_class, show_thread_run_cmd, | |
1a966eab | 3480 | _("Show whether the current thread is allowed to run."), |
c906108c SS |
3481 | &show_thread_cmd_list); |
3482 | ||
1a966eab AC |
3483 | add_cmd ("detach-suspend-count", class_run, set_thread_detach_sc_cmd, _("\ |
3484 | Set the suspend count will leave on the thread when detaching.\n\ | |
942fd805 | 3485 | Note that this is relative to suspend count when gdb noticed the thread;\n\ |
1a966eab | 3486 | use the `thread takeover-suspend-count' to force it to an absolute value."), |
c906108c | 3487 | &set_thread_cmd_list); |
1a966eab AC |
3488 | add_cmd ("detach-suspend-count", no_class, show_thread_detach_sc_cmd, _("\ |
3489 | Show the suspend count will leave on the thread when detaching.\n\ | |
942fd805 | 3490 | Note that this is relative to suspend count when gdb noticed the thread;\n\ |
1a966eab | 3491 | use the `thread takeover-suspend-count' to force it to an absolute value."), |
c906108c SS |
3492 | &show_thread_cmd_list); |
3493 | ||
1a966eab AC |
3494 | add_cmd ("exception-port", no_class, set_thread_exc_port_cmd, _("\ |
3495 | Set the thread exception port to which we forward exceptions.\n\ | |
942fd805 | 3496 | This overrides the task exception port.\n\ |
1a966eab | 3497 | The argument should be the value of the send right in the task."), |
c906108c SS |
3498 | &set_thread_cmd_list); |
3499 | add_alias_cmd ("excp", "exception-port", no_class, 1, &set_thread_cmd_list); | |
942fd805 MK |
3500 | add_alias_cmd ("exc-port", "exception-port", no_class, 1, |
3501 | &set_thread_cmd_list); | |
c906108c | 3502 | |
1a966eab AC |
3503 | add_cmd ("takeover-suspend-count", no_class, thread_takeover_sc_cmd, _("\ |
3504 | Force the threads absolute suspend-count to be gdb's.\n\ | |
942fd805 | 3505 | Prior to giving this command, gdb's thread suspend-counts are relative\n\ |
1a966eab | 3506 | to the thread's initial suspend-count when gdb notices the threads."), |
c906108c SS |
3507 | &thread_cmd_list); |
3508 | } | |
942fd805 | 3509 | |
c906108c | 3510 | void |
942fd805 | 3511 | _initialize_gnu_nat (void) |
c906108c SS |
3512 | { |
3513 | proc_server = getproc (); | |
942fd805 | 3514 | |
c906108c SS |
3515 | add_task_commands (); |
3516 | add_thread_commands (); | |
cbe54154 PA |
3517 | add_setshow_boolean_cmd ("gnu-nat", class_maintenance, |
3518 | &gnu_debug_flag, | |
3519 | _("Set debugging output for the gnu backend."), | |
3520 | _("Show debugging output for the gnu backend."), | |
3521 | NULL, | |
3522 | NULL, | |
3523 | NULL, | |
3524 | &setdebuglist, | |
3525 | &showdebuglist); | |
c906108c SS |
3526 | } |
3527 | \f | |
3528 | #ifdef FLUSH_INFERIOR_CACHE | |
3529 | ||
3530 | /* When over-writing code on some machines the I-Cache must be flushed | |
3531 | explicitly, because it is not kept coherent by the lazy hardware. | |
3532 | This definitely includes breakpoints, for instance, or else we | |
0963b4bd | 3533 | end up looping in mysterious Bpt traps. */ |
c906108c SS |
3534 | |
3535 | void | |
fba45db2 | 3536 | flush_inferior_icache (CORE_ADDR pc, int amount) |
c906108c SS |
3537 | { |
3538 | vm_machine_attribute_val_t flush = MATTR_VAL_ICACHE_FLUSH; | |
0947023d | 3539 | kern_return_t ret; |
c5aa993b | 3540 | |
c289427b | 3541 | ret = vm_machine_attribute (gnu_current_inf->task->port, |
c906108c SS |
3542 | pc, |
3543 | amount, | |
3544 | MATTR_CACHE, | |
3545 | &flush); | |
3546 | if (ret != KERN_SUCCESS) | |
8a3fe4f8 | 3547 | warning (_("Error flushing inferior's cache : %s"), safe_strerror (ret)); |
c906108c | 3548 | } |
c5aa993b | 3549 | #endif /* FLUSH_INFERIOR_CACHE */ |