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a80b95ba | 1 | /* Darwin support for GDB, the GNU debugger. |
ecd75fc8 | 2 | Copyright (C) 2008-2014 Free Software Foundation, Inc. |
a80b95ba TG |
3 | |
4 | Contributed by AdaCore. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
47d48711 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
a80b95ba TG |
20 | |
21 | #include "defs.h" | |
22 | #include "top.h" | |
23 | #include "inferior.h" | |
24 | #include "target.h" | |
25 | #include "symfile.h" | |
26 | #include "symtab.h" | |
27 | #include "objfiles.h" | |
28 | #include "gdb.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "gdbcore.h" | |
31 | #include "gdbthread.h" | |
32 | #include "regcache.h" | |
33 | #include "event-top.h" | |
34 | #include "inf-loop.h" | |
53ce3c39 | 35 | #include <sys/stat.h> |
a80b95ba TG |
36 | #include "exceptions.h" |
37 | #include "inf-child.h" | |
38 | #include "value.h" | |
39 | #include "arch-utils.h" | |
40 | #include "bfd.h" | |
ece0061f | 41 | #include "bfd/mach-o.h" |
a80b95ba TG |
42 | |
43 | #include <sys/ptrace.h> | |
44 | #include <sys/signal.h> | |
45 | #include <machine/setjmp.h> | |
46 | #include <sys/types.h> | |
47 | #include <unistd.h> | |
48 | #include <signal.h> | |
49 | #include <string.h> | |
50 | #include <ctype.h> | |
a80b95ba TG |
51 | #include <sys/sysctl.h> |
52 | #include <sys/proc.h> | |
bb00b29d TG |
53 | #include <libproc.h> |
54 | #include <sys/syscall.h> | |
e69860f1 | 55 | #include <spawn.h> |
a80b95ba TG |
56 | |
57 | #include <mach/mach_error.h> | |
58 | #include <mach/mach_vm.h> | |
59 | #include <mach/mach_init.h> | |
60 | #include <mach/vm_map.h> | |
61 | #include <mach/task.h> | |
62 | #include <mach/mach_port.h> | |
63 | #include <mach/thread_act.h> | |
64 | #include <mach/port.h> | |
65 | ||
66 | #include "darwin-nat.h" | |
21ff4686 | 67 | #include "common/filestuff.h" |
a80b95ba TG |
68 | |
69 | /* Quick overview. | |
70 | Darwin kernel is Mach + BSD derived kernel. Note that they share the | |
71 | same memory space and are linked together (ie there is no micro-kernel). | |
72 | ||
73 | Although ptrace(2) is available on Darwin, it is not complete. We have | |
74 | to use Mach calls to read and write memory and to modify registers. We | |
75 | also use Mach to get inferior faults. As we cannot use select(2) or | |
76 | signals with Mach port (the Mach communication channel), signals are | |
77 | reported to gdb as an exception. Furthermore we detect death of the | |
78 | inferior through a Mach notification message. This way we only wait | |
79 | on Mach ports. | |
80 | ||
81 | Some Mach documentation is available for Apple xnu source package or | |
82 | from the web. */ | |
83 | ||
84 | ||
85 | #define PTRACE(CMD, PID, ADDR, SIG) \ | |
86 | darwin_ptrace(#CMD, CMD, (PID), (ADDR), (SIG)) | |
87 | ||
88 | extern boolean_t exc_server (mach_msg_header_t *in, mach_msg_header_t *out); | |
89 | ||
1eab8a48 | 90 | static void darwin_stop (struct target_ops *self, ptid_t); |
a80b95ba | 91 | |
bb00b29d | 92 | static void darwin_resume_to (struct target_ops *ops, ptid_t ptid, int step, |
2ea28649 | 93 | enum gdb_signal signal); |
bb00b29d | 94 | static void darwin_resume (ptid_t ptid, int step, |
2ea28649 | 95 | enum gdb_signal signal); |
bb00b29d TG |
96 | |
97 | static ptid_t darwin_wait_to (struct target_ops *ops, ptid_t ptid, | |
98 | struct target_waitstatus *status, int options); | |
99 | static ptid_t darwin_wait (ptid_t ptid, struct target_waitstatus *status); | |
100 | ||
a80b95ba TG |
101 | static void darwin_mourn_inferior (struct target_ops *ops); |
102 | ||
2ab1c2d9 | 103 | static void darwin_kill_inferior (struct target_ops *ops); |
a80b95ba TG |
104 | |
105 | static void darwin_ptrace_me (void); | |
106 | ||
107 | static void darwin_ptrace_him (int pid); | |
108 | ||
109 | static void darwin_create_inferior (struct target_ops *ops, char *exec_file, | |
110 | char *allargs, char **env, int from_tty); | |
111 | ||
112 | static void darwin_files_info (struct target_ops *ops); | |
113 | ||
bb00b29d TG |
114 | static char *darwin_pid_to_str (struct target_ops *ops, ptid_t tpid); |
115 | ||
116 | static int darwin_thread_alive (struct target_ops *ops, ptid_t tpid); | |
a80b95ba TG |
117 | |
118 | /* Target operations for Darwin. */ | |
119 | static struct target_ops *darwin_ops; | |
120 | ||
121 | /* Task identifier of gdb. */ | |
122 | static task_t gdb_task; | |
123 | ||
124 | /* A copy of mach_host_self (). */ | |
125 | mach_port_t darwin_host_self; | |
126 | ||
127 | /* Exception port. */ | |
128 | mach_port_t darwin_ex_port; | |
129 | ||
a80b95ba TG |
130 | /* Port set. */ |
131 | mach_port_t darwin_port_set; | |
132 | ||
0963b4bd | 133 | /* Page size. */ |
a80b95ba TG |
134 | static vm_size_t mach_page_size; |
135 | ||
136 | /* If Set, catch all mach exceptions (before they are converted to signals | |
137 | by the kernel). */ | |
138 | static int enable_mach_exceptions; | |
139 | ||
bb00b29d TG |
140 | /* Inferior that should report a fake stop event. */ |
141 | static struct inferior *darwin_inf_fake_stop; | |
142 | ||
a80b95ba TG |
143 | #define PAGE_TRUNC(x) ((x) & ~(mach_page_size - 1)) |
144 | #define PAGE_ROUND(x) PAGE_TRUNC((x) + mach_page_size - 1) | |
145 | ||
bb00b29d | 146 | /* This controls output of inferior debugging. */ |
ccce17b0 | 147 | static unsigned int darwin_debug_flag = 0; |
a80b95ba | 148 | |
15c19d39 TG |
149 | /* Create a __TEXT __info_plist section in the executable so that gdb could |
150 | be signed. This is required to get an authorization for task_for_pid. | |
151 | ||
152 | Once gdb is built, you can either: | |
153 | * make it setgid procmod | |
154 | * or codesign it with any system-trusted signing authority. | |
155 | See taskgated(8) for details. */ | |
156 | static const unsigned char info_plist[] | |
157 | __attribute__ ((section ("__TEXT,__info_plist"),used)) = | |
158 | "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" | |
159 | "<!DOCTYPE plist PUBLIC \"-//Apple Computer//DTD PLIST 1.0//EN\"" | |
160 | " \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n" | |
161 | "<plist version=\"1.0\">\n" | |
162 | "<dict>\n" | |
163 | " <key>CFBundleIdentifier</key>\n" | |
164 | " <string>org.gnu.gdb</string>\n" | |
165 | " <key>CFBundleName</key>\n" | |
166 | " <string>gdb</string>\n" | |
167 | " <key>CFBundleVersion</key>\n" | |
168 | " <string>1.0</string>\n" | |
169 | " <key>SecTaskAccess</key>\n" | |
170 | " <array>\n" | |
171 | " <string>allowed</string>\n" | |
172 | " <string>debug</string>\n" | |
173 | " </array>\n" | |
174 | "</dict>\n" | |
175 | "</plist>\n"; | |
176 | ||
a80b95ba TG |
177 | static void |
178 | inferior_debug (int level, const char *fmt, ...) | |
179 | { | |
180 | va_list ap; | |
181 | ||
182 | if (darwin_debug_flag < level) | |
183 | return; | |
184 | ||
185 | va_start (ap, fmt); | |
186 | printf_unfiltered (_("[%d inferior]: "), getpid ()); | |
187 | vprintf_unfiltered (fmt, ap); | |
188 | va_end (ap); | |
189 | } | |
190 | ||
191 | void | |
192 | mach_check_error (kern_return_t ret, const char *file, | |
193 | unsigned int line, const char *func) | |
194 | { | |
195 | if (ret == KERN_SUCCESS) | |
196 | return; | |
197 | if (func == NULL) | |
198 | func = _("[UNKNOWN]"); | |
bb00b29d | 199 | |
4f1cdeec | 200 | warning (_("Mach error at \"%s:%u\" in function \"%s\": %s (0x%lx)"), |
bb00b29d | 201 | file, line, func, mach_error_string (ret), (unsigned long) ret); |
a80b95ba TG |
202 | } |
203 | ||
204 | static const char * | |
205 | unparse_exception_type (unsigned int i) | |
206 | { | |
207 | static char unknown_exception_buf[32]; | |
208 | ||
209 | switch (i) | |
210 | { | |
211 | case EXC_BAD_ACCESS: | |
212 | return "EXC_BAD_ACCESS"; | |
213 | case EXC_BAD_INSTRUCTION: | |
214 | return "EXC_BAD_INSTRUCTION"; | |
215 | case EXC_ARITHMETIC: | |
216 | return "EXC_ARITHMETIC"; | |
217 | case EXC_EMULATION: | |
218 | return "EXC_EMULATION"; | |
219 | case EXC_SOFTWARE: | |
220 | return "EXC_SOFTWARE"; | |
221 | case EXC_BREAKPOINT: | |
222 | return "EXC_BREAKPOINT"; | |
223 | case EXC_SYSCALL: | |
224 | return "EXC_SYSCALL"; | |
225 | case EXC_MACH_SYSCALL: | |
226 | return "EXC_MACH_SYSCALL"; | |
227 | case EXC_RPC_ALERT: | |
228 | return "EXC_RPC_ALERT"; | |
229 | case EXC_CRASH: | |
230 | return "EXC_CRASH"; | |
231 | default: | |
232 | snprintf (unknown_exception_buf, 32, _("unknown (%d)"), i); | |
233 | return unknown_exception_buf; | |
234 | } | |
235 | } | |
236 | ||
a7aa0d73 JB |
237 | /* Set errno to zero, and then call ptrace with the given arguments. |
238 | If inferior debugging traces are on, then also print a debug | |
239 | trace. | |
240 | ||
241 | The returned value is the same as the value returned by ptrace, | |
242 | except in the case where that value is -1 but errno is zero. | |
243 | This case is documented to be a non-error situation, so we | |
244 | return zero in that case. */ | |
245 | ||
a80b95ba TG |
246 | static int |
247 | darwin_ptrace (const char *name, | |
248 | int request, int pid, PTRACE_TYPE_ARG3 arg3, int arg4) | |
249 | { | |
250 | int ret; | |
251 | ||
a7aa0d73 | 252 | errno = 0; |
a80b95ba | 253 | ret = ptrace (request, pid, (caddr_t) arg3, arg4); |
a7aa0d73 JB |
254 | if (ret == -1 && errno == 0) |
255 | ret = 0; | |
a80b95ba | 256 | |
bb00b29d | 257 | inferior_debug (4, _("ptrace (%s, %d, 0x%x, %d): %d (%s)\n"), |
a80b95ba | 258 | name, pid, arg3, arg4, ret, |
a3224241 | 259 | (ret != 0) ? safe_strerror (errno) : _("no error")); |
a80b95ba TG |
260 | return ret; |
261 | } | |
262 | ||
263 | static int | |
264 | cmp_thread_t (const void *l, const void *r) | |
265 | { | |
bb00b29d TG |
266 | thread_t tl = *(const thread_t *)l; |
267 | thread_t tr = *(const thread_t *)r; | |
268 | return (int)(tl - tr); | |
a80b95ba TG |
269 | } |
270 | ||
271 | static void | |
bb00b29d | 272 | darwin_check_new_threads (struct inferior *inf) |
a80b95ba TG |
273 | { |
274 | kern_return_t kret; | |
275 | unsigned int i; | |
276 | thread_array_t thread_list; | |
277 | unsigned int new_nbr; | |
278 | unsigned int old_nbr; | |
279 | unsigned int new_ix, old_ix; | |
bb00b29d TG |
280 | darwin_inferior *darwin_inf = inf->private; |
281 | VEC (darwin_thread_t) *thread_vec; | |
a80b95ba TG |
282 | |
283 | /* Get list of threads. */ | |
bb00b29d | 284 | kret = task_threads (darwin_inf->task, &thread_list, &new_nbr); |
a80b95ba TG |
285 | MACH_CHECK_ERROR (kret); |
286 | if (kret != KERN_SUCCESS) | |
287 | return; | |
288 | ||
bb00b29d | 289 | /* Sort the list. */ |
a80b95ba TG |
290 | if (new_nbr > 1) |
291 | qsort (thread_list, new_nbr, sizeof (thread_t), cmp_thread_t); | |
292 | ||
bb00b29d TG |
293 | if (darwin_inf->threads) |
294 | old_nbr = VEC_length (darwin_thread_t, darwin_inf->threads); | |
a80b95ba TG |
295 | else |
296 | old_nbr = 0; | |
297 | ||
bb00b29d TG |
298 | /* Quick check for no changes. */ |
299 | if (old_nbr == new_nbr) | |
300 | { | |
301 | for (i = 0; i < new_nbr; i++) | |
302 | if (thread_list[i] | |
303 | != VEC_index (darwin_thread_t, darwin_inf->threads, i)->gdb_port) | |
304 | break; | |
305 | if (i == new_nbr) | |
306 | { | |
307 | kret = vm_deallocate (gdb_task, (vm_address_t) thread_list, | |
308 | new_nbr * sizeof (int)); | |
309 | MACH_CHECK_ERROR (kret); | |
310 | return; | |
311 | } | |
312 | } | |
313 | ||
314 | thread_vec = VEC_alloc (darwin_thread_t, new_nbr); | |
315 | ||
a80b95ba TG |
316 | for (new_ix = 0, old_ix = 0; new_ix < new_nbr || old_ix < old_nbr;) |
317 | { | |
318 | thread_t new_id = (new_ix < new_nbr) ? | |
319 | thread_list[new_ix] : THREAD_NULL; | |
bb00b29d TG |
320 | darwin_thread_t *old = (old_ix < old_nbr) ? |
321 | VEC_index (darwin_thread_t, darwin_inf->threads, old_ix) : NULL; | |
322 | thread_t old_id = old ? old->gdb_port : THREAD_NULL; | |
323 | ||
324 | inferior_debug | |
c8c9911f | 325 | (12, _(" new_ix:%d/%d, old_ix:%d/%d, new_id:0x%x old_id:0x%x\n"), |
bb00b29d | 326 | new_ix, new_nbr, old_ix, old_nbr, new_id, old_id); |
a80b95ba TG |
327 | |
328 | if (old_id == new_id) | |
329 | { | |
330 | /* Thread still exist. */ | |
bb00b29d | 331 | VEC_safe_push (darwin_thread_t, thread_vec, old); |
a80b95ba TG |
332 | new_ix++; |
333 | old_ix++; | |
334 | ||
335 | kret = mach_port_deallocate (gdb_task, old_id); | |
336 | MACH_CHECK_ERROR (kret); | |
337 | continue; | |
338 | } | |
bb00b29d TG |
339 | if (new_ix < new_nbr && new_id == MACH_PORT_DEAD) |
340 | { | |
341 | /* Ignore dead ports. | |
342 | In some weird cases, we might get dead ports. They should | |
343 | correspond to dead thread so they could safely be ignored. */ | |
344 | new_ix++; | |
345 | continue; | |
346 | } | |
347 | if (new_ix < new_nbr && (old_ix == old_nbr || new_id < old_id)) | |
a80b95ba TG |
348 | { |
349 | /* A thread was created. */ | |
350 | struct thread_info *tp; | |
bb00b29d | 351 | struct private_thread_info *pti; |
a80b95ba | 352 | |
41bf6aca | 353 | pti = XCNEW (struct private_thread_info); |
bb00b29d TG |
354 | pti->gdb_port = new_id; |
355 | pti->msg_state = DARWIN_RUNNING; | |
356 | ||
357 | /* Add a new thread unless this is the first one ever met. */ | |
358 | if (!(old_nbr == 0 && new_ix == 0)) | |
359 | tp = add_thread_with_info (ptid_build (inf->pid, 0, new_id), pti); | |
360 | else | |
361 | { | |
362 | tp = find_thread_ptid (ptid_build (inf->pid, 0, 0)); | |
363 | gdb_assert (tp); | |
364 | tp->private = pti; | |
365 | } | |
366 | VEC_safe_push (darwin_thread_t, thread_vec, pti); | |
a80b95ba TG |
367 | new_ix++; |
368 | continue; | |
369 | } | |
bb00b29d | 370 | if (old_ix < old_nbr && (new_ix == new_nbr || new_id > old_id)) |
a80b95ba TG |
371 | { |
372 | /* A thread was removed. */ | |
373 | delete_thread (ptid_build (inf->pid, 0, old_id)); | |
374 | kret = mach_port_deallocate (gdb_task, old_id); | |
375 | MACH_CHECK_ERROR (kret); | |
376 | old_ix++; | |
bb00b29d | 377 | continue; |
a80b95ba | 378 | } |
f3574227 | 379 | gdb_assert_not_reached ("unexpected thread case"); |
a80b95ba TG |
380 | } |
381 | ||
bb00b29d TG |
382 | if (darwin_inf->threads) |
383 | VEC_free (darwin_thread_t, darwin_inf->threads); | |
384 | darwin_inf->threads = thread_vec; | |
a80b95ba TG |
385 | |
386 | kret = vm_deallocate (gdb_task, (vm_address_t) thread_list, | |
387 | new_nbr * sizeof (int)); | |
388 | MACH_CHECK_ERROR (kret); | |
389 | } | |
390 | ||
bb00b29d TG |
391 | static int |
392 | find_inferior_task_it (struct inferior *inf, void *port_ptr) | |
a80b95ba | 393 | { |
bb00b29d TG |
394 | return inf->private->task == *(task_t*)port_ptr; |
395 | } | |
a80b95ba | 396 | |
bb00b29d TG |
397 | static int |
398 | find_inferior_notify_it (struct inferior *inf, void *port_ptr) | |
399 | { | |
400 | return inf->private->notify_port == *(task_t*)port_ptr; | |
a80b95ba TG |
401 | } |
402 | ||
bb00b29d TG |
403 | /* Return an inferior by task port. */ |
404 | static struct inferior * | |
405 | darwin_find_inferior_by_task (task_t port) | |
a80b95ba | 406 | { |
bb00b29d TG |
407 | return iterate_over_inferiors (&find_inferior_task_it, &port); |
408 | } | |
a80b95ba | 409 | |
bb00b29d TG |
410 | /* Return an inferior by notification port. */ |
411 | static struct inferior * | |
412 | darwin_find_inferior_by_notify (mach_port_t port) | |
413 | { | |
414 | return iterate_over_inferiors (&find_inferior_notify_it, &port); | |
415 | } | |
a80b95ba | 416 | |
bb00b29d TG |
417 | /* Return a thread by port. */ |
418 | static darwin_thread_t * | |
419 | darwin_find_thread (struct inferior *inf, thread_t thread) | |
420 | { | |
421 | darwin_thread_t *t; | |
422 | int k; | |
423 | ||
424 | for (k = 0; | |
425 | VEC_iterate (darwin_thread_t, inf->private->threads, k, t); | |
426 | k++) | |
427 | if (t->gdb_port == thread) | |
428 | return t; | |
429 | return NULL; | |
430 | } | |
a80b95ba | 431 | |
bb00b29d | 432 | /* Suspend (ie stop) an inferior at Mach level. */ |
a80b95ba | 433 | |
bb00b29d TG |
434 | static void |
435 | darwin_suspend_inferior (struct inferior *inf) | |
436 | { | |
437 | if (!inf->private->suspended) | |
a80b95ba | 438 | { |
bb00b29d | 439 | kern_return_t kret; |
a80b95ba | 440 | |
bb00b29d TG |
441 | kret = task_suspend (inf->private->task); |
442 | MACH_CHECK_ERROR (kret); | |
a80b95ba | 443 | |
bb00b29d TG |
444 | inf->private->suspended = 1; |
445 | } | |
446 | } | |
a80b95ba | 447 | |
bb00b29d | 448 | /* Resume an inferior at Mach level. */ |
a80b95ba | 449 | |
bb00b29d TG |
450 | static void |
451 | darwin_resume_inferior (struct inferior *inf) | |
452 | { | |
453 | if (inf->private->suspended) | |
454 | { | |
455 | kern_return_t kret; | |
a80b95ba | 456 | |
bb00b29d TG |
457 | kret = task_resume (inf->private->task); |
458 | MACH_CHECK_ERROR (kret); | |
459 | ||
460 | inf->private->suspended = 0; | |
a80b95ba TG |
461 | } |
462 | } | |
463 | ||
bb00b29d TG |
464 | /* Iterator functions. */ |
465 | ||
466 | static int | |
467 | darwin_suspend_inferior_it (struct inferior *inf, void *arg) | |
a80b95ba | 468 | { |
bb00b29d TG |
469 | darwin_suspend_inferior (inf); |
470 | darwin_check_new_threads (inf); | |
471 | return 0; | |
472 | } | |
473 | ||
474 | static int | |
475 | darwin_resume_inferior_it (struct inferior *inf, void *arg) | |
476 | { | |
477 | darwin_resume_inferior (inf); | |
478 | return 0; | |
a80b95ba TG |
479 | } |
480 | ||
bb00b29d TG |
481 | static void |
482 | darwin_dump_message (mach_msg_header_t *hdr, int disp_body) | |
483 | { | |
484 | printf_unfiltered (_("message header:\n")); | |
485 | printf_unfiltered (_(" bits: 0x%x\n"), hdr->msgh_bits); | |
486 | printf_unfiltered (_(" size: 0x%x\n"), hdr->msgh_size); | |
487 | printf_unfiltered (_(" remote-port: 0x%x\n"), hdr->msgh_remote_port); | |
488 | printf_unfiltered (_(" local-port: 0x%x\n"), hdr->msgh_local_port); | |
489 | printf_unfiltered (_(" reserved: 0x%x\n"), hdr->msgh_reserved); | |
490 | printf_unfiltered (_(" id: 0x%x\n"), hdr->msgh_id); | |
491 | ||
492 | if (disp_body) | |
493 | { | |
494 | const unsigned char *data; | |
495 | const unsigned long *ldata; | |
496 | int size; | |
497 | int i; | |
498 | ||
499 | data = (unsigned char *)(hdr + 1); | |
500 | size = hdr->msgh_size - sizeof (mach_msg_header_t); | |
501 | ||
502 | if (hdr->msgh_bits & MACH_MSGH_BITS_COMPLEX) | |
503 | { | |
504 | mach_msg_body_t *bod = (mach_msg_body_t*)data; | |
505 | mach_msg_port_descriptor_t *desc = | |
506 | (mach_msg_port_descriptor_t *)(bod + 1); | |
507 | int k; | |
508 | NDR_record_t *ndr; | |
509 | printf_unfiltered (_("body: descriptor_count=%u\n"), | |
510 | bod->msgh_descriptor_count); | |
511 | data += sizeof (mach_msg_body_t); | |
512 | size -= sizeof (mach_msg_body_t); | |
513 | for (k = 0; k < bod->msgh_descriptor_count; k++) | |
514 | switch (desc[k].type) | |
515 | { | |
516 | case MACH_MSG_PORT_DESCRIPTOR: | |
517 | printf_unfiltered | |
518 | (_(" descr %d: type=%u (port) name=0x%x, dispo=%d\n"), | |
519 | k, desc[k].type, desc[k].name, desc[k].disposition); | |
520 | break; | |
521 | default: | |
522 | printf_unfiltered (_(" descr %d: type=%u\n"), | |
523 | k, desc[k].type); | |
524 | break; | |
525 | } | |
526 | data += bod->msgh_descriptor_count | |
527 | * sizeof (mach_msg_port_descriptor_t); | |
528 | size -= bod->msgh_descriptor_count | |
529 | * sizeof (mach_msg_port_descriptor_t); | |
530 | ndr = (NDR_record_t *)(desc + bod->msgh_descriptor_count); | |
531 | printf_unfiltered | |
532 | (_("NDR: mig=%02x if=%02x encod=%02x " | |
533 | "int=%02x char=%02x float=%02x\n"), | |
534 | ndr->mig_vers, ndr->if_vers, ndr->mig_encoding, | |
535 | ndr->int_rep, ndr->char_rep, ndr->float_rep); | |
536 | data += sizeof (NDR_record_t); | |
537 | size -= sizeof (NDR_record_t); | |
538 | } | |
539 | ||
540 | printf_unfiltered (_(" data:")); | |
541 | ldata = (const unsigned long *)data; | |
542 | for (i = 0; i < size / sizeof (unsigned long); i++) | |
543 | printf_unfiltered (" %08lx", ldata[i]); | |
544 | printf_unfiltered (_("\n")); | |
545 | } | |
546 | } | |
547 | ||
548 | static int | |
549 | darwin_decode_exception_message (mach_msg_header_t *hdr, | |
550 | struct inferior **pinf, | |
551 | darwin_thread_t **pthread) | |
a80b95ba | 552 | { |
bb00b29d TG |
553 | mach_msg_body_t *bod = (mach_msg_body_t*)(hdr + 1); |
554 | mach_msg_port_descriptor_t *desc = (mach_msg_port_descriptor_t *)(bod + 1); | |
555 | NDR_record_t *ndr; | |
556 | integer_t *data; | |
557 | struct inferior *inf; | |
558 | darwin_thread_t *thread; | |
559 | task_t task_port; | |
560 | thread_t thread_port; | |
a80b95ba | 561 | kern_return_t kret; |
bb00b29d | 562 | int i; |
a80b95ba | 563 | |
bb00b29d TG |
564 | /* Check message identifier. 2401 is exc. */ |
565 | if (hdr->msgh_id != 2401) | |
566 | return -1; | |
567 | ||
568 | /* Check message header. */ | |
569 | if (!(hdr->msgh_bits & MACH_MSGH_BITS_COMPLEX)) | |
570 | return -1; | |
571 | ||
572 | /* Check descriptors. */ | |
573 | if (hdr->msgh_size < (sizeof (*hdr) + sizeof (*bod) + 2 * sizeof (*desc) | |
574 | + sizeof (*ndr) + 2 * sizeof (integer_t)) | |
575 | || bod->msgh_descriptor_count != 2 | |
576 | || desc[0].type != MACH_MSG_PORT_DESCRIPTOR | |
577 | || desc[0].disposition != MACH_MSG_TYPE_MOVE_SEND | |
578 | || desc[1].type != MACH_MSG_PORT_DESCRIPTOR | |
579 | || desc[1].disposition != MACH_MSG_TYPE_MOVE_SEND) | |
580 | return -1; | |
581 | ||
582 | /* Check data representation. */ | |
583 | ndr = (NDR_record_t *)(desc + 2); | |
584 | if (ndr->mig_vers != NDR_PROTOCOL_2_0 | |
585 | || ndr->if_vers != NDR_PROTOCOL_2_0 | |
586 | || ndr->mig_encoding != NDR_record.mig_encoding | |
587 | || ndr->int_rep != NDR_record.int_rep | |
588 | || ndr->char_rep != NDR_record.char_rep | |
589 | || ndr->float_rep != NDR_record.float_rep) | |
590 | return -1; | |
591 | ||
592 | /* Ok, the hard work. */ | |
593 | data = (integer_t *)(ndr + 1); | |
594 | ||
595 | /* Find process by port. */ | |
596 | task_port = desc[1].name; | |
597 | thread_port = desc[0].name; | |
598 | inf = darwin_find_inferior_by_task (task_port); | |
599 | if (inf == NULL) | |
600 | return -1; | |
601 | *pinf = inf; | |
602 | ||
603 | /* Find thread by port. */ | |
604 | /* Check for new threads. Do it early so that the port in the exception | |
605 | message can be deallocated. */ | |
606 | darwin_check_new_threads (inf); | |
607 | ||
608 | /* We got new rights to the task and the thread. Get rid of them. */ | |
a80b95ba TG |
609 | kret = mach_port_deallocate (mach_task_self (), task_port); |
610 | MACH_CHECK_ERROR (kret); | |
611 | kret = mach_port_deallocate (mach_task_self (), thread_port); | |
612 | MACH_CHECK_ERROR (kret); | |
613 | ||
bb00b29d TG |
614 | thread = darwin_find_thread (inf, thread_port); |
615 | if (thread == NULL) | |
616 | return -1; | |
617 | *pthread = thread; | |
618 | ||
484a26a8 TG |
619 | /* The thread should be running. However we have observed cases where a thread |
620 | got a SIGTTIN message after being stopped. */ | |
621 | gdb_assert (thread->msg_state != DARWIN_MESSAGE); | |
622 | ||
bb00b29d | 623 | /* Finish decoding. */ |
bb00b29d TG |
624 | thread->event.header = *hdr; |
625 | thread->event.thread_port = thread_port; | |
626 | thread->event.task_port = task_port; | |
627 | thread->event.ex_type = data[0]; | |
628 | thread->event.data_count = data[1]; | |
629 | ||
630 | if (hdr->msgh_size < (sizeof (*hdr) + sizeof (*bod) + 2 * sizeof (*desc) | |
631 | + sizeof (*ndr) + 2 * sizeof (integer_t) | |
632 | + data[1] * sizeof (integer_t))) | |
633 | return -1; | |
634 | for (i = 0; i < data[1]; i++) | |
635 | thread->event.ex_data[i] = data[2 + i]; | |
636 | ||
637 | thread->msg_state = DARWIN_MESSAGE; | |
638 | ||
639 | return 0; | |
640 | } | |
641 | ||
642 | static void | |
643 | darwin_encode_reply (mig_reply_error_t *reply, mach_msg_header_t *hdr, | |
644 | integer_t code) | |
645 | { | |
646 | mach_msg_header_t *rh = &reply->Head; | |
647 | rh->msgh_bits = MACH_MSGH_BITS(MACH_MSGH_BITS_REMOTE(hdr->msgh_bits), 0); | |
648 | rh->msgh_remote_port = hdr->msgh_remote_port; | |
649 | rh->msgh_size = (mach_msg_size_t)sizeof(mig_reply_error_t); | |
650 | rh->msgh_local_port = MACH_PORT_NULL; | |
651 | rh->msgh_id = hdr->msgh_id + 100; | |
652 | ||
653 | reply->NDR = NDR_record; | |
654 | reply->RetCode = code; | |
a80b95ba TG |
655 | } |
656 | ||
bb00b29d TG |
657 | static void |
658 | darwin_send_reply (struct inferior *inf, darwin_thread_t *thread) | |
a80b95ba TG |
659 | { |
660 | kern_return_t kret; | |
bb00b29d | 661 | mig_reply_error_t reply; |
a80b95ba | 662 | |
bb00b29d TG |
663 | darwin_encode_reply (&reply, &thread->event.header, KERN_SUCCESS); |
664 | ||
665 | kret = mach_msg (&reply.Head, MACH_SEND_MSG | MACH_SEND_INTERRUPT, | |
666 | reply.Head.msgh_size, 0, | |
667 | MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, | |
668 | MACH_PORT_NULL); | |
a80b95ba TG |
669 | MACH_CHECK_ERROR (kret); |
670 | ||
bb00b29d TG |
671 | inf->private->pending_messages--; |
672 | } | |
673 | ||
674 | static void | |
675 | darwin_resume_thread (struct inferior *inf, darwin_thread_t *thread, | |
676 | int step, int nsignal) | |
677 | { | |
678 | kern_return_t kret; | |
679 | int res; | |
680 | ||
a80b95ba | 681 | inferior_debug |
bb00b29d TG |
682 | (3, _("darwin_resume_thread: state=%d, thread=0x%x, step=%d nsignal=%d\n"), |
683 | thread->msg_state, thread->gdb_port, step, nsignal); | |
684 | ||
685 | switch (thread->msg_state) | |
a80b95ba | 686 | { |
bb00b29d TG |
687 | case DARWIN_MESSAGE: |
688 | if (thread->event.ex_type == EXC_SOFTWARE | |
689 | && thread->event.ex_data[0] == EXC_SOFT_SIGNAL) | |
690 | { | |
691 | /* Either deliver a new signal or cancel the signal received. */ | |
692 | res = PTRACE (PT_THUPDATE, inf->pid, | |
693 | (void *)(uintptr_t)thread->gdb_port, nsignal); | |
694 | if (res < 0) | |
695 | inferior_debug (1, _("ptrace THUP: res=%d\n"), res); | |
696 | } | |
697 | else if (nsignal) | |
698 | { | |
699 | /* Note: ptrace is allowed only if the process is stopped. | |
700 | Directly send the signal to the thread. */ | |
701 | res = syscall (SYS___pthread_kill, thread->gdb_port, nsignal); | |
702 | inferior_debug (4, _("darwin_resume_thread: kill 0x%x %d: %d\n"), | |
703 | thread->gdb_port, nsignal, res); | |
704 | thread->signaled = 1; | |
705 | } | |
706 | ||
d987a266 TG |
707 | /* Set or reset single step. */ |
708 | if (step != thread->single_step) | |
709 | { | |
c8c9911f | 710 | inferior_debug (4, _("darwin_set_sstep (thread=0x%x, enable=%d)\n"), |
d987a266 TG |
711 | thread->gdb_port, step); |
712 | darwin_set_sstep (thread->gdb_port, step); | |
713 | thread->single_step = step; | |
714 | } | |
bb00b29d TG |
715 | |
716 | darwin_send_reply (inf, thread); | |
717 | thread->msg_state = DARWIN_RUNNING; | |
718 | break; | |
719 | ||
720 | case DARWIN_RUNNING: | |
721 | break; | |
722 | ||
723 | case DARWIN_STOPPED: | |
724 | kret = thread_resume (thread->gdb_port); | |
725 | MACH_CHECK_ERROR (kret); | |
726 | ||
727 | thread->msg_state = DARWIN_RUNNING; | |
728 | break; | |
a80b95ba | 729 | } |
bb00b29d | 730 | } |
a80b95ba | 731 | |
bb00b29d | 732 | /* Resume all threads of the inferior. */ |
a80b95ba | 733 | |
bb00b29d TG |
734 | static void |
735 | darwin_resume_inferior_threads (struct inferior *inf, int step, int nsignal) | |
736 | { | |
737 | darwin_thread_t *thread; | |
738 | int k; | |
739 | ||
740 | for (k = 0; | |
741 | VEC_iterate (darwin_thread_t, inf->private->threads, k, thread); | |
742 | k++) | |
743 | darwin_resume_thread (inf, thread, step, nsignal); | |
a80b95ba TG |
744 | } |
745 | ||
bb00b29d | 746 | struct resume_inferior_threads_param |
a80b95ba | 747 | { |
bb00b29d TG |
748 | int step; |
749 | int nsignal; | |
750 | }; | |
751 | ||
752 | static int | |
753 | darwin_resume_inferior_threads_it (struct inferior *inf, void *param) | |
754 | { | |
755 | int step = ((struct resume_inferior_threads_param *)param)->step; | |
756 | int nsignal = ((struct resume_inferior_threads_param *)param)->nsignal; | |
757 | ||
758 | darwin_resume_inferior_threads (inf, step, nsignal); | |
759 | ||
760 | return 0; | |
761 | } | |
762 | ||
763 | /* Suspend all threads of INF. */ | |
764 | ||
765 | static void | |
766 | darwin_suspend_inferior_threads (struct inferior *inf) | |
767 | { | |
768 | darwin_thread_t *thread; | |
a80b95ba | 769 | kern_return_t kret; |
bb00b29d TG |
770 | int k; |
771 | ||
772 | for (k = 0; | |
773 | VEC_iterate (darwin_thread_t, inf->private->threads, k, thread); | |
774 | k++) | |
775 | switch (thread->msg_state) | |
776 | { | |
777 | case DARWIN_STOPPED: | |
778 | case DARWIN_MESSAGE: | |
779 | break; | |
780 | case DARWIN_RUNNING: | |
781 | kret = thread_suspend (thread->gdb_port); | |
782 | MACH_CHECK_ERROR (kret); | |
783 | thread->msg_state = DARWIN_STOPPED; | |
784 | break; | |
785 | } | |
786 | } | |
a80b95ba | 787 | |
bb00b29d | 788 | static void |
2ea28649 | 789 | darwin_resume (ptid_t ptid, int step, enum gdb_signal signal) |
bb00b29d TG |
790 | { |
791 | struct target_waitstatus status; | |
792 | int pid; | |
a80b95ba | 793 | |
bb00b29d TG |
794 | kern_return_t kret; |
795 | int res; | |
796 | int nsignal; | |
797 | struct inferior *inf; | |
a80b95ba | 798 | |
bb00b29d TG |
799 | inferior_debug |
800 | (2, _("darwin_resume: pid=%d, tid=0x%x, step=%d, signal=%d\n"), | |
801 | ptid_get_pid (ptid), ptid_get_tid (ptid), step, signal); | |
802 | ||
a493e3e2 | 803 | if (signal == GDB_SIGNAL_0) |
bb00b29d TG |
804 | nsignal = 0; |
805 | else | |
2ea28649 | 806 | nsignal = gdb_signal_to_host (signal); |
a80b95ba | 807 | |
bb00b29d TG |
808 | /* Don't try to single step all threads. */ |
809 | if (step) | |
810 | ptid = inferior_ptid; | |
811 | ||
812 | /* minus_one_ptid is RESUME_ALL. */ | |
813 | if (ptid_equal (ptid, minus_one_ptid)) | |
a80b95ba | 814 | { |
bb00b29d TG |
815 | struct resume_inferior_threads_param param; |
816 | ||
817 | param.nsignal = nsignal; | |
818 | param.step = step; | |
a80b95ba | 819 | |
bb00b29d TG |
820 | /* Resume threads. */ |
821 | iterate_over_inferiors (darwin_resume_inferior_threads_it, ¶m); | |
822 | /* Resume tasks. */ | |
823 | iterate_over_inferiors (darwin_resume_inferior_it, NULL); | |
824 | } | |
825 | else | |
a80b95ba | 826 | { |
bb00b29d TG |
827 | struct inferior *inf = find_inferior_pid (ptid_get_pid (ptid)); |
828 | long tid = ptid_get_tid (ptid); | |
829 | ||
830 | /* Stop the inferior (should be useless). */ | |
831 | darwin_suspend_inferior (inf); | |
832 | ||
833 | if (tid == 0) | |
834 | darwin_resume_inferior_threads (inf, step, nsignal); | |
835 | else | |
836 | { | |
837 | darwin_thread_t *thread; | |
838 | ||
839 | /* Suspend threads of the task. */ | |
840 | darwin_suspend_inferior_threads (inf); | |
841 | ||
842 | /* Resume the selected thread. */ | |
843 | thread = darwin_find_thread (inf, tid); | |
844 | gdb_assert (thread); | |
845 | darwin_resume_thread (inf, thread, step, nsignal); | |
846 | } | |
847 | ||
848 | /* Resume the task. */ | |
849 | darwin_resume_inferior (inf); | |
a80b95ba | 850 | } |
bb00b29d | 851 | } |
a80b95ba | 852 | |
bb00b29d TG |
853 | static void |
854 | darwin_resume_to (struct target_ops *ops, ptid_t ptid, int step, | |
2ea28649 | 855 | enum gdb_signal signal) |
bb00b29d TG |
856 | { |
857 | return darwin_resume (ptid, step, signal); | |
858 | } | |
859 | ||
860 | static ptid_t | |
861 | darwin_decode_message (mach_msg_header_t *hdr, | |
862 | darwin_thread_t **pthread, | |
863 | struct inferior **pinf, | |
864 | struct target_waitstatus *status) | |
865 | { | |
866 | darwin_thread_t *thread; | |
867 | struct inferior *inf; | |
a80b95ba TG |
868 | |
869 | /* Exception message. */ | |
870 | if (hdr->msgh_local_port == darwin_ex_port) | |
871 | { | |
bb00b29d TG |
872 | int res; |
873 | ||
874 | /* Decode message. */ | |
875 | res = darwin_decode_exception_message (hdr, &inf, &thread); | |
876 | ||
877 | if (res < 0) | |
a80b95ba | 878 | { |
bb00b29d | 879 | /* Should not happen... */ |
c8c9911f JB |
880 | printf_unfiltered |
881 | (_("darwin_wait: ill-formatted message (id=0x%x)\n"), hdr->msgh_id); | |
bb00b29d | 882 | /* FIXME: send a failure reply? */ |
a80b95ba TG |
883 | status->kind = TARGET_WAITKIND_SPURIOUS; |
884 | return minus_one_ptid; | |
885 | } | |
bb00b29d TG |
886 | *pinf = inf; |
887 | *pthread = thread; | |
888 | inf->private->pending_messages++; | |
a80b95ba TG |
889 | |
890 | status->kind = TARGET_WAITKIND_STOPPED; | |
bb00b29d TG |
891 | thread->msg_state = DARWIN_MESSAGE; |
892 | ||
c8c9911f | 893 | inferior_debug (4, _("darwin_wait: thread=0x%x, got %s\n"), |
bb00b29d TG |
894 | thread->gdb_port, |
895 | unparse_exception_type (thread->event.ex_type)); | |
a80b95ba | 896 | |
bb00b29d | 897 | switch (thread->event.ex_type) |
a80b95ba TG |
898 | { |
899 | case EXC_BAD_ACCESS: | |
4e225075 | 900 | status->value.sig = GDB_EXC_BAD_ACCESS; |
a80b95ba TG |
901 | break; |
902 | case EXC_BAD_INSTRUCTION: | |
4e225075 | 903 | status->value.sig = GDB_EXC_BAD_INSTRUCTION; |
a80b95ba TG |
904 | break; |
905 | case EXC_ARITHMETIC: | |
4e225075 | 906 | status->value.sig = GDB_EXC_ARITHMETIC; |
a80b95ba TG |
907 | break; |
908 | case EXC_EMULATION: | |
4e225075 | 909 | status->value.sig = GDB_EXC_EMULATION; |
a80b95ba TG |
910 | break; |
911 | case EXC_SOFTWARE: | |
bb00b29d | 912 | if (thread->event.ex_data[0] == EXC_SOFT_SIGNAL) |
a80b95ba | 913 | { |
bb00b29d | 914 | status->value.sig = |
2ea28649 | 915 | gdb_signal_from_host (thread->event.ex_data[1]); |
bb00b29d TG |
916 | inferior_debug (5, _(" (signal %d: %s)\n"), |
917 | thread->event.ex_data[1], | |
2ea28649 | 918 | gdb_signal_to_name (status->value.sig)); |
bb00b29d TG |
919 | |
920 | /* If the thread is stopped because it has received a signal | |
921 | that gdb has just sent, continue. */ | |
922 | if (thread->signaled) | |
923 | { | |
924 | thread->signaled = 0; | |
925 | darwin_send_reply (inf, thread); | |
926 | thread->msg_state = DARWIN_RUNNING; | |
927 | status->kind = TARGET_WAITKIND_IGNORE; | |
928 | } | |
a80b95ba TG |
929 | } |
930 | else | |
4e225075 | 931 | status->value.sig = GDB_EXC_SOFTWARE; |
a80b95ba TG |
932 | break; |
933 | case EXC_BREAKPOINT: | |
934 | /* Many internal GDB routines expect breakpoints to be reported | |
4e225075 | 935 | as GDB_SIGNAL_TRAP, and will report GDB_EXC_BREAKPOINT |
0963b4bd | 936 | as a spurious signal. */ |
a493e3e2 | 937 | status->value.sig = GDB_SIGNAL_TRAP; |
a80b95ba TG |
938 | break; |
939 | default: | |
a493e3e2 | 940 | status->value.sig = GDB_SIGNAL_UNKNOWN; |
a80b95ba TG |
941 | break; |
942 | } | |
943 | ||
bb00b29d TG |
944 | return ptid_build (inf->pid, 0, thread->gdb_port); |
945 | } | |
946 | ||
947 | *pinf = NULL; | |
948 | *pthread = NULL; | |
949 | ||
950 | inf = darwin_find_inferior_by_notify (hdr->msgh_local_port); | |
951 | if (inf != NULL) | |
952 | { | |
953 | if (!inf->private->no_ptrace) | |
954 | { | |
955 | pid_t res; | |
956 | int wstatus; | |
957 | ||
958 | res = wait4 (inf->pid, &wstatus, 0, NULL); | |
959 | if (res < 0 || res != inf->pid) | |
960 | { | |
961 | printf_unfiltered (_("wait4: res=%d: %s\n"), | |
962 | res, safe_strerror (errno)); | |
963 | status->kind = TARGET_WAITKIND_SPURIOUS; | |
964 | return minus_one_ptid; | |
965 | } | |
966 | if (WIFEXITED (wstatus)) | |
967 | { | |
968 | status->kind = TARGET_WAITKIND_EXITED; | |
969 | status->value.integer = WEXITSTATUS (wstatus); | |
970 | } | |
971 | else | |
972 | { | |
973 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
974 | status->value.sig = WTERMSIG (wstatus); | |
975 | } | |
976 | ||
c8c9911f | 977 | inferior_debug (4, _("darwin_wait: pid=%d exit, status=0x%x\n"), |
bb00b29d TG |
978 | res, wstatus); |
979 | ||
980 | /* Looks necessary on Leopard and harmless... */ | |
981 | wait4 (inf->pid, &wstatus, 0, NULL); | |
982 | ||
983 | return ptid_build (inf->pid, 0, 0); | |
984 | } | |
985 | else | |
986 | { | |
987 | inferior_debug (4, _("darwin_wait: pid=%d\n"), inf->pid); | |
988 | status->kind = TARGET_WAITKIND_EXITED; | |
989 | status->value.integer = 0; /* Don't know. */ | |
990 | return ptid_build (inf->pid, 0, 0); | |
991 | } | |
992 | } | |
993 | ||
c8c9911f | 994 | printf_unfiltered (_("Bad local-port: 0x%x\n"), hdr->msgh_local_port); |
bb00b29d TG |
995 | status->kind = TARGET_WAITKIND_SPURIOUS; |
996 | return minus_one_ptid; | |
997 | } | |
998 | ||
999 | static int | |
1000 | cancel_breakpoint (ptid_t ptid) | |
1001 | { | |
0963b4bd | 1002 | /* Arrange for a breakpoint to be hit again later. We will handle |
bb00b29d TG |
1003 | the current event, eventually we will resume this thread, and this |
1004 | breakpoint will trap again. | |
1005 | ||
1006 | If we do not do this, then we run the risk that the user will | |
1007 | delete or disable the breakpoint, but the thread will have already | |
1008 | tripped on it. */ | |
1009 | ||
1010 | struct regcache *regcache = get_thread_regcache (ptid); | |
1011 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
1012 | CORE_ADDR pc; | |
a80b95ba | 1013 | |
118e6252 | 1014 | pc = regcache_read_pc (regcache) - target_decr_pc_after_break (gdbarch); |
40625c9d | 1015 | if (breakpoint_inserted_here_p (get_regcache_aspace (regcache), pc)) |
bb00b29d | 1016 | { |
c8c9911f | 1017 | inferior_debug (4, "cancel_breakpoint for thread 0x%x\n", |
bb00b29d TG |
1018 | ptid_get_tid (ptid)); |
1019 | ||
1020 | /* Back up the PC if necessary. */ | |
118e6252 | 1021 | if (target_decr_pc_after_break (gdbarch)) |
bb00b29d TG |
1022 | regcache_write_pc (regcache, pc); |
1023 | ||
1024 | return 1; | |
a80b95ba | 1025 | } |
bb00b29d TG |
1026 | return 0; |
1027 | } | |
1028 | ||
1029 | static ptid_t | |
1030 | darwin_wait (ptid_t ptid, struct target_waitstatus *status) | |
1031 | { | |
1032 | kern_return_t kret; | |
1033 | union | |
1034 | { | |
1035 | mach_msg_header_t hdr; | |
1036 | char data[0x100]; | |
1037 | } msgin; | |
1038 | mach_msg_header_t *hdr = &msgin.hdr; | |
1039 | ptid_t res; | |
1040 | darwin_thread_t *thread; | |
1041 | struct inferior *inf; | |
1042 | ||
1043 | inferior_debug | |
1044 | (2, _("darwin_wait: waiting for a message pid=%d thread=%lx\n"), | |
1045 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
1046 | ||
1047 | /* Handle fake stop events at first. */ | |
1048 | if (darwin_inf_fake_stop != NULL) | |
1049 | { | |
1050 | inf = darwin_inf_fake_stop; | |
1051 | darwin_inf_fake_stop = NULL; | |
1052 | ||
1053 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 1054 | status->value.sig = GDB_SIGNAL_TRAP; |
bb00b29d TG |
1055 | thread = VEC_index (darwin_thread_t, inf->private->threads, 0); |
1056 | thread->msg_state = DARWIN_STOPPED; | |
1057 | return ptid_build (inf->pid, 0, thread->gdb_port); | |
1058 | } | |
1059 | ||
1060 | do | |
1061 | { | |
1062 | /* set_sigint_trap (); */ | |
1063 | ||
1064 | /* Wait for a message. */ | |
1065 | kret = mach_msg (&msgin.hdr, MACH_RCV_MSG | MACH_RCV_INTERRUPT, 0, | |
1066 | sizeof (msgin.data), darwin_port_set, 0, MACH_PORT_NULL); | |
1067 | ||
1068 | /* clear_sigint_trap (); */ | |
1069 | ||
1070 | if (kret == MACH_RCV_INTERRUPTED) | |
1071 | { | |
1072 | status->kind = TARGET_WAITKIND_IGNORE; | |
1073 | return minus_one_ptid; | |
1074 | } | |
1075 | ||
1076 | if (kret != MACH_MSG_SUCCESS) | |
1077 | { | |
c8c9911f | 1078 | inferior_debug (5, _("mach_msg: ret=0x%x\n"), kret); |
bb00b29d TG |
1079 | status->kind = TARGET_WAITKIND_SPURIOUS; |
1080 | return minus_one_ptid; | |
1081 | } | |
1082 | ||
1083 | /* Debug: display message. */ | |
1084 | if (darwin_debug_flag > 10) | |
1085 | darwin_dump_message (hdr, darwin_debug_flag > 11); | |
1086 | ||
1087 | res = darwin_decode_message (hdr, &thread, &inf, status); | |
1088 | ||
1089 | if (inf == NULL) | |
1090 | return res; | |
1091 | } | |
1092 | while (status->kind == TARGET_WAITKIND_IGNORE); | |
1093 | ||
1094 | /* Stop all tasks. */ | |
1095 | iterate_over_inferiors (darwin_suspend_inferior_it, NULL); | |
1096 | ||
1097 | /* Read pending messages. */ | |
1098 | while (1) | |
a80b95ba | 1099 | { |
bb00b29d TG |
1100 | struct target_waitstatus status2; |
1101 | ptid_t ptid2; | |
1102 | ||
1103 | kret = mach_msg (&msgin.hdr, | |
1104 | MACH_RCV_MSG | MACH_RCV_TIMEOUT, 0, | |
1105 | sizeof (msgin.data), darwin_port_set, 1, MACH_PORT_NULL); | |
1106 | ||
1107 | if (kret == MACH_RCV_TIMED_OUT) | |
1108 | break; | |
1109 | if (kret != MACH_MSG_SUCCESS) | |
1110 | { | |
1111 | inferior_debug | |
c8c9911f | 1112 | (5, _("darwin_wait: mach_msg(pending) ret=0x%x\n"), kret); |
bb00b29d TG |
1113 | break; |
1114 | } | |
1115 | ||
1116 | ptid2 = darwin_decode_message (hdr, &thread, &inf, &status2); | |
a80b95ba | 1117 | |
bb00b29d TG |
1118 | if (inf != NULL && thread != NULL |
1119 | && thread->event.ex_type == EXC_BREAKPOINT) | |
a80b95ba | 1120 | { |
bb00b29d TG |
1121 | if (thread->single_step |
1122 | || cancel_breakpoint (ptid_build (inf->pid, 0, thread->gdb_port))) | |
1123 | { | |
1124 | gdb_assert (thread->msg_state == DARWIN_MESSAGE); | |
1125 | darwin_send_reply (inf, thread); | |
1126 | thread->msg_state = DARWIN_RUNNING; | |
1127 | } | |
1128 | else | |
1129 | inferior_debug | |
c8c9911f | 1130 | (3, _("darwin_wait: thread 0x%x hit a non-gdb breakpoint\n"), |
bb00b29d | 1131 | thread->gdb_port); |
a80b95ba | 1132 | } |
bb00b29d TG |
1133 | else |
1134 | inferior_debug (3, _("darwin_wait: unhandled pending message\n")); | |
1135 | } | |
1136 | return res; | |
1137 | } | |
a80b95ba | 1138 | |
bb00b29d TG |
1139 | static ptid_t |
1140 | darwin_wait_to (struct target_ops *ops, | |
1141 | ptid_t ptid, struct target_waitstatus *status, int options) | |
1142 | { | |
1143 | return darwin_wait (ptid, status); | |
1144 | } | |
a80b95ba | 1145 | |
bb00b29d | 1146 | static void |
1eab8a48 | 1147 | darwin_stop (struct target_ops *self, ptid_t t) |
bb00b29d TG |
1148 | { |
1149 | struct inferior *inf = current_inferior (); | |
a80b95ba | 1150 | |
bb00b29d TG |
1151 | /* FIXME: handle in no_ptrace mode. */ |
1152 | gdb_assert (!inf->private->no_ptrace); | |
1153 | kill (inf->pid, SIGINT); | |
a80b95ba TG |
1154 | } |
1155 | ||
1156 | static void | |
1157 | darwin_mourn_inferior (struct target_ops *ops) | |
1158 | { | |
1159 | struct inferior *inf = current_inferior (); | |
1160 | kern_return_t kret; | |
1161 | mach_port_t prev; | |
1162 | int i; | |
1163 | ||
1164 | unpush_target (darwin_ops); | |
1165 | ||
1166 | /* Deallocate threads. */ | |
bb00b29d | 1167 | if (inf->private->threads) |
a80b95ba TG |
1168 | { |
1169 | int k; | |
bb00b29d TG |
1170 | darwin_thread_t *t; |
1171 | for (k = 0; | |
1172 | VEC_iterate (darwin_thread_t, inf->private->threads, k, t); | |
1173 | k++) | |
a80b95ba | 1174 | { |
bb00b29d | 1175 | kret = mach_port_deallocate (gdb_task, t->gdb_port); |
a80b95ba TG |
1176 | MACH_CHECK_ERROR (kret); |
1177 | } | |
bb00b29d TG |
1178 | VEC_free (darwin_thread_t, inf->private->threads); |
1179 | inf->private->threads = NULL; | |
a80b95ba TG |
1180 | } |
1181 | ||
bb00b29d TG |
1182 | kret = mach_port_move_member (gdb_task, |
1183 | inf->private->notify_port, MACH_PORT_NULL); | |
fda184b6 | 1184 | MACH_CHECK_ERROR (kret); |
bb00b29d TG |
1185 | |
1186 | kret = mach_port_request_notification (gdb_task, inf->private->task, | |
a80b95ba | 1187 | MACH_NOTIFY_DEAD_NAME, 0, |
bb00b29d | 1188 | MACH_PORT_NULL, |
a80b95ba TG |
1189 | MACH_MSG_TYPE_MAKE_SEND_ONCE, |
1190 | &prev); | |
1191 | /* This can fail if the task is dead. */ | |
c8c9911f | 1192 | inferior_debug (4, "task=0x%x, prev=0x%x, notify_port=0x%x\n", |
bb00b29d TG |
1193 | inf->private->task, prev, inf->private->notify_port); |
1194 | ||
a80b95ba TG |
1195 | if (kret == KERN_SUCCESS) |
1196 | { | |
1197 | kret = mach_port_deallocate (gdb_task, prev); | |
1198 | MACH_CHECK_ERROR (kret); | |
1199 | } | |
1200 | ||
bb00b29d TG |
1201 | kret = mach_port_destroy (gdb_task, inf->private->notify_port); |
1202 | MACH_CHECK_ERROR (kret); | |
1203 | ||
1204 | ||
a80b95ba | 1205 | /* Deallocate saved exception ports. */ |
bb00b29d | 1206 | for (i = 0; i < inf->private->exception_info.count; i++) |
a80b95ba TG |
1207 | { |
1208 | kret = mach_port_deallocate | |
bb00b29d | 1209 | (gdb_task, inf->private->exception_info.ports[i]); |
a80b95ba TG |
1210 | MACH_CHECK_ERROR (kret); |
1211 | } | |
bb00b29d | 1212 | inf->private->exception_info.count = 0; |
a80b95ba | 1213 | |
bb00b29d | 1214 | kret = mach_port_deallocate (gdb_task, inf->private->task); |
a80b95ba TG |
1215 | MACH_CHECK_ERROR (kret); |
1216 | ||
bb00b29d TG |
1217 | xfree (inf->private); |
1218 | inf->private = NULL; | |
a80b95ba TG |
1219 | |
1220 | generic_mourn_inferior (); | |
1221 | } | |
1222 | ||
1223 | static void | |
bb00b29d | 1224 | darwin_reply_to_all_pending_messages (struct inferior *inf) |
a80b95ba | 1225 | { |
bb00b29d TG |
1226 | int k; |
1227 | darwin_thread_t *t; | |
a80b95ba | 1228 | |
bb00b29d TG |
1229 | for (k = 0; |
1230 | VEC_iterate (darwin_thread_t, inf->private->threads, k, t); | |
1231 | k++) | |
1232 | { | |
1233 | if (t->msg_state == DARWIN_MESSAGE) | |
1234 | darwin_resume_thread (inf, t, 0, 0); | |
1235 | } | |
a80b95ba TG |
1236 | } |
1237 | ||
1238 | static void | |
bb00b29d | 1239 | darwin_stop_inferior (struct inferior *inf) |
a80b95ba TG |
1240 | { |
1241 | struct target_waitstatus wstatus; | |
1242 | ptid_t ptid; | |
1243 | kern_return_t kret; | |
1244 | int status; | |
1245 | int res; | |
1246 | ||
bb00b29d | 1247 | gdb_assert (inf != NULL); |
a80b95ba | 1248 | |
bb00b29d | 1249 | darwin_suspend_inferior (inf); |
a80b95ba | 1250 | |
bb00b29d | 1251 | darwin_reply_to_all_pending_messages (inf); |
a80b95ba | 1252 | |
bb00b29d TG |
1253 | if (inf->private->no_ptrace) |
1254 | return; | |
a80b95ba | 1255 | |
bb00b29d TG |
1256 | res = kill (inf->pid, SIGSTOP); |
1257 | if (res != 0) | |
b37520b6 | 1258 | warning (_("cannot kill: %s"), safe_strerror (errno)); |
a80b95ba | 1259 | |
bb00b29d TG |
1260 | /* Wait until the process is really stopped. */ |
1261 | while (1) | |
a80b95ba | 1262 | { |
bb00b29d TG |
1263 | ptid = darwin_wait (inferior_ptid, &wstatus); |
1264 | if (wstatus.kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 | 1265 | && wstatus.value.sig == GDB_SIGNAL_STOP) |
bb00b29d | 1266 | break; |
a80b95ba TG |
1267 | } |
1268 | } | |
1269 | ||
1270 | static kern_return_t | |
1271 | darwin_save_exception_ports (darwin_inferior *inf) | |
1272 | { | |
1273 | kern_return_t kret; | |
1274 | ||
1275 | inf->exception_info.count = | |
1276 | sizeof (inf->exception_info.ports) / sizeof (inf->exception_info.ports[0]); | |
1277 | ||
1278 | kret = task_get_exception_ports | |
1279 | (inf->task, EXC_MASK_ALL, inf->exception_info.masks, | |
1280 | &inf->exception_info.count, inf->exception_info.ports, | |
1281 | inf->exception_info.behaviors, inf->exception_info.flavors); | |
1282 | return kret; | |
1283 | } | |
1284 | ||
1285 | static kern_return_t | |
1286 | darwin_restore_exception_ports (darwin_inferior *inf) | |
1287 | { | |
1288 | int i; | |
1289 | kern_return_t kret; | |
1290 | ||
1291 | for (i = 0; i < inf->exception_info.count; i++) | |
1292 | { | |
1293 | kret = task_set_exception_ports | |
1294 | (inf->task, inf->exception_info.masks[i], inf->exception_info.ports[i], | |
1295 | inf->exception_info.behaviors[i], inf->exception_info.flavors[i]); | |
1296 | if (kret != KERN_SUCCESS) | |
1297 | return kret; | |
1298 | } | |
1299 | ||
1300 | return KERN_SUCCESS; | |
1301 | } | |
1302 | ||
1303 | static void | |
bb00b29d TG |
1304 | darwin_kill_inferior (struct target_ops *ops) |
1305 | { | |
1306 | struct inferior *inf = current_inferior (); | |
1307 | struct target_waitstatus wstatus; | |
1308 | ptid_t ptid; | |
1309 | kern_return_t kret; | |
1310 | int status; | |
1311 | int res; | |
1312 | ||
1313 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1314 | return; | |
1315 | ||
1316 | gdb_assert (inf != NULL); | |
1317 | ||
ee41036f TG |
1318 | kret = darwin_restore_exception_ports (inf->private); |
1319 | MACH_CHECK_ERROR (kret); | |
bb00b29d | 1320 | |
ee41036f | 1321 | darwin_reply_to_all_pending_messages (inf); |
bb00b29d | 1322 | |
ee41036f | 1323 | res = kill (inf->pid, 9); |
bb00b29d | 1324 | |
ee41036f | 1325 | if (res == 0) |
bb00b29d | 1326 | { |
bb00b29d | 1327 | darwin_resume_inferior (inf); |
ee41036f | 1328 | |
bb00b29d TG |
1329 | ptid = darwin_wait (inferior_ptid, &wstatus); |
1330 | } | |
ee41036f TG |
1331 | else if (errno != ESRCH) |
1332 | warning (_("Failed to kill inferior: kill (%d, 9) returned [%s]"), | |
1333 | inf->pid, safe_strerror (errno)); | |
bb00b29d TG |
1334 | |
1335 | target_mourn_inferior (); | |
1336 | } | |
1337 | ||
1338 | static void | |
1339 | darwin_attach_pid (struct inferior *inf) | |
a80b95ba | 1340 | { |
a80b95ba TG |
1341 | kern_return_t kret; |
1342 | mach_port_t prev_port; | |
1343 | int traps_expected; | |
bb00b29d | 1344 | mach_port_t prev_not; |
a80b95ba TG |
1345 | exception_mask_t mask; |
1346 | ||
41bf6aca | 1347 | inf->private = XCNEW (darwin_inferior); |
bb00b29d TG |
1348 | |
1349 | kret = task_for_pid (gdb_task, inf->pid, &inf->private->task); | |
a80b95ba TG |
1350 | if (kret != KERN_SUCCESS) |
1351 | { | |
1352 | int status; | |
a80b95ba TG |
1353 | |
1354 | if (!inf->attach_flag) | |
1355 | { | |
bb00b29d TG |
1356 | kill (inf->pid, 9); |
1357 | waitpid (inf->pid, &status, 0); | |
a80b95ba TG |
1358 | } |
1359 | ||
1360 | error (_("Unable to find Mach task port for process-id %d: %s (0x%lx).\n" | |
15c19d39 | 1361 | " (please check gdb is codesigned - see taskgated(8))"), |
bb00b29d | 1362 | inf->pid, mach_error_string (kret), (unsigned long) kret); |
a80b95ba TG |
1363 | } |
1364 | ||
bb00b29d TG |
1365 | inferior_debug (2, _("inferior task: 0x%x, pid: %d\n"), |
1366 | inf->private->task, inf->pid); | |
a80b95ba TG |
1367 | |
1368 | if (darwin_ex_port == MACH_PORT_NULL) | |
1369 | { | |
1370 | /* Create a port to get exceptions. */ | |
1371 | kret = mach_port_allocate (gdb_task, MACH_PORT_RIGHT_RECEIVE, | |
1372 | &darwin_ex_port); | |
fda184b6 JB |
1373 | if (kret != KERN_SUCCESS) |
1374 | error (_("Unable to create exception port, mach_port_allocate " | |
1375 | "returned: %d"), | |
1376 | kret); | |
a80b95ba TG |
1377 | |
1378 | kret = mach_port_insert_right (gdb_task, darwin_ex_port, darwin_ex_port, | |
1379 | MACH_MSG_TYPE_MAKE_SEND); | |
fda184b6 JB |
1380 | if (kret != KERN_SUCCESS) |
1381 | error (_("Unable to create exception port, mach_port_insert_right " | |
1382 | "returned: %d"), | |
1383 | kret); | |
a80b95ba TG |
1384 | |
1385 | /* Create a port set and put ex_port in it. */ | |
1386 | kret = mach_port_allocate (gdb_task, MACH_PORT_RIGHT_PORT_SET, | |
1387 | &darwin_port_set); | |
fda184b6 JB |
1388 | if (kret != KERN_SUCCESS) |
1389 | error (_("Unable to create port set, mach_port_allocate " | |
1390 | "returned: %d"), | |
1391 | kret); | |
a80b95ba TG |
1392 | |
1393 | kret = mach_port_move_member (gdb_task, darwin_ex_port, darwin_port_set); | |
fda184b6 JB |
1394 | if (kret != KERN_SUCCESS) |
1395 | error (_("Unable to move exception port into new port set, " | |
1396 | "mach_port_move_member\n" | |
1397 | "returned: %d"), | |
1398 | kret); | |
bb00b29d | 1399 | } |
a80b95ba | 1400 | |
bb00b29d TG |
1401 | /* Create a port to be notified when the child task terminates. */ |
1402 | kret = mach_port_allocate (gdb_task, MACH_PORT_RIGHT_RECEIVE, | |
1403 | &inf->private->notify_port); | |
fda184b6 JB |
1404 | if (kret != KERN_SUCCESS) |
1405 | error (_("Unable to create notification port, mach_port_allocate " | |
1406 | "returned: %d"), | |
1407 | kret); | |
a80b95ba | 1408 | |
bb00b29d TG |
1409 | kret = mach_port_move_member (gdb_task, |
1410 | inf->private->notify_port, darwin_port_set); | |
fda184b6 JB |
1411 | if (kret != KERN_SUCCESS) |
1412 | error (_("Unable to move notification port into new port set, " | |
1413 | "mach_port_move_member\n" | |
1414 | "returned: %d"), | |
1415 | kret); | |
a80b95ba | 1416 | |
bb00b29d | 1417 | kret = mach_port_request_notification (gdb_task, inf->private->task, |
a80b95ba | 1418 | MACH_NOTIFY_DEAD_NAME, 0, |
bb00b29d | 1419 | inf->private->notify_port, |
a80b95ba | 1420 | MACH_MSG_TYPE_MAKE_SEND_ONCE, |
bb00b29d | 1421 | &prev_not); |
fda184b6 JB |
1422 | if (kret != KERN_SUCCESS) |
1423 | error (_("Termination notification request failed, " | |
1424 | "mach_port_request_notification\n" | |
1425 | "returned: %d"), | |
1426 | kret); | |
1427 | if (prev_not != MACH_PORT_NULL) | |
1428 | { | |
1429 | /* This is unexpected, as there should not be any previously | |
1430 | registered notification request. But this is not a fatal | |
1431 | issue, so just emit a warning. */ | |
1432 | warning (_("\ | |
1433 | A task termination request was registered before the debugger registered\n\ | |
1434 | its own. This is unexpected, but should otherwise not have any actual\n\ | |
1435 | impact on the debugging session.")); | |
1436 | } | |
a80b95ba | 1437 | |
bb00b29d | 1438 | kret = darwin_save_exception_ports (inf->private); |
fda184b6 JB |
1439 | if (kret != KERN_SUCCESS) |
1440 | error (_("Unable to save exception ports, task_get_exception_ports" | |
1441 | "returned: %d"), | |
1442 | kret); | |
a80b95ba TG |
1443 | |
1444 | /* Set exception port. */ | |
1445 | if (enable_mach_exceptions) | |
1446 | mask = EXC_MASK_ALL; | |
1447 | else | |
bb00b29d TG |
1448 | mask = EXC_MASK_SOFTWARE | EXC_MASK_BREAKPOINT; |
1449 | kret = task_set_exception_ports (inf->private->task, mask, darwin_ex_port, | |
1450 | EXCEPTION_DEFAULT, THREAD_STATE_NONE); | |
fda184b6 JB |
1451 | if (kret != KERN_SUCCESS) |
1452 | error (_("Unable to set exception ports, task_set_exception_ports" | |
1453 | "returned: %d"), | |
1454 | kret); | |
a80b95ba TG |
1455 | |
1456 | push_target (darwin_ops); | |
1457 | } | |
1458 | ||
1459 | static void | |
bb00b29d | 1460 | darwin_init_thread_list (struct inferior *inf) |
a80b95ba | 1461 | { |
bb00b29d TG |
1462 | darwin_thread_t *thread; |
1463 | ptid_t new_ptid; | |
a80b95ba TG |
1464 | |
1465 | darwin_check_new_threads (inf); | |
1466 | ||
bb00b29d TG |
1467 | gdb_assert (inf->private->threads |
1468 | && VEC_length (darwin_thread_t, inf->private->threads) > 0); | |
1469 | thread = VEC_index (darwin_thread_t, inf->private->threads, 0); | |
1470 | ||
1471 | /* Note: fork_inferior automatically add a thead but it uses a wrong ptid. | |
1472 | Fix up. */ | |
1473 | new_ptid = ptid_build (inf->pid, 0, thread->gdb_port); | |
1474 | thread_change_ptid (inferior_ptid, new_ptid); | |
1475 | inferior_ptid = new_ptid; | |
1476 | } | |
1477 | ||
1478 | /* The child must synchronize with gdb: gdb must set the exception port | |
1479 | before the child call PTRACE_SIGEXC. We use a pipe to achieve this. | |
1480 | FIXME: is there a lighter way ? */ | |
1481 | static int ptrace_fds[2]; | |
1482 | ||
1483 | static void | |
1484 | darwin_ptrace_me (void) | |
1485 | { | |
1486 | int res; | |
1487 | char c; | |
1488 | ||
1489 | /* Close write end point. */ | |
1490 | close (ptrace_fds[1]); | |
1491 | ||
1492 | /* Wait until gdb is ready. */ | |
1493 | res = read (ptrace_fds[0], &c, 1); | |
fda184b6 JB |
1494 | if (res != 0) |
1495 | error (_("unable to read from pipe, read returned: %d"), res); | |
bb00b29d TG |
1496 | close (ptrace_fds[0]); |
1497 | ||
1498 | /* Get rid of privileges. */ | |
1499 | setegid (getgid ()); | |
1500 | ||
1501 | /* Set TRACEME. */ | |
1502 | PTRACE (PT_TRACE_ME, 0, 0, 0); | |
1503 | ||
1504 | /* Redirect signals to exception port. */ | |
1505 | PTRACE (PT_SIGEXC, 0, 0, 0); | |
1506 | } | |
1507 | ||
1508 | /* Dummy function to be sure fork_inferior uses fork(2) and not vfork(2). */ | |
1509 | static void | |
1510 | darwin_pre_ptrace (void) | |
1511 | { | |
1512 | if (pipe (ptrace_fds) != 0) | |
1513 | { | |
1514 | ptrace_fds[0] = -1; | |
1515 | ptrace_fds[1] = -1; | |
1516 | error (_("unable to create a pipe: %s"), safe_strerror (errno)); | |
1517 | } | |
21ff4686 TT |
1518 | |
1519 | mark_fd_no_cloexec (ptrace_fds[0]); | |
1520 | mark_fd_no_cloexec (ptrace_fds[1]); | |
a80b95ba TG |
1521 | } |
1522 | ||
1523 | static void | |
1524 | darwin_ptrace_him (int pid) | |
1525 | { | |
1526 | task_t itask; | |
1527 | kern_return_t kret; | |
1528 | mach_port_t prev_port; | |
1529 | int traps_expected; | |
bb00b29d | 1530 | struct inferior *inf = current_inferior (); |
a80b95ba | 1531 | |
bb00b29d | 1532 | darwin_attach_pid (inf); |
a80b95ba TG |
1533 | |
1534 | /* Let's the child run. */ | |
1535 | close (ptrace_fds[0]); | |
1536 | close (ptrace_fds[1]); | |
1537 | ||
21ff4686 TT |
1538 | unmark_fd_no_cloexec (ptrace_fds[0]); |
1539 | unmark_fd_no_cloexec (ptrace_fds[1]); | |
1540 | ||
bb00b29d TG |
1541 | darwin_init_thread_list (inf); |
1542 | ||
a80b95ba TG |
1543 | startup_inferior (START_INFERIOR_TRAPS_EXPECTED); |
1544 | } | |
1545 | ||
e69860f1 TG |
1546 | static void |
1547 | darwin_execvp (const char *file, char * const argv[], char * const env[]) | |
1548 | { | |
1549 | posix_spawnattr_t attr; | |
1550 | short ps_flags = 0; | |
f00c55f8 | 1551 | int res; |
e69860f1 | 1552 | |
f00c55f8 TG |
1553 | res = posix_spawnattr_init (&attr); |
1554 | if (res != 0) | |
e69860f1 TG |
1555 | { |
1556 | fprintf_unfiltered | |
1557 | (gdb_stderr, "Cannot initialize attribute for posix_spawn\n"); | |
1558 | return; | |
1559 | } | |
1560 | ||
1561 | /* Do like execve: replace the image. */ | |
1562 | ps_flags = POSIX_SPAWN_SETEXEC; | |
1563 | ||
1564 | /* Disable ASLR. The constant doesn't look to be available outside the | |
1565 | kernel include files. */ | |
1566 | #ifndef _POSIX_SPAWN_DISABLE_ASLR | |
1567 | #define _POSIX_SPAWN_DISABLE_ASLR 0x0100 | |
1568 | #endif | |
1569 | ps_flags |= _POSIX_SPAWN_DISABLE_ASLR; | |
f00c55f8 TG |
1570 | res = posix_spawnattr_setflags (&attr, ps_flags); |
1571 | if (res != 0) | |
e69860f1 | 1572 | { |
f00c55f8 | 1573 | fprintf_unfiltered (gdb_stderr, "Cannot set posix_spawn flags\n"); |
e69860f1 TG |
1574 | return; |
1575 | } | |
1576 | ||
1577 | posix_spawnp (NULL, argv[0], NULL, &attr, argv, env); | |
1578 | } | |
1579 | ||
a80b95ba TG |
1580 | static void |
1581 | darwin_create_inferior (struct target_ops *ops, char *exec_file, | |
1582 | char *allargs, char **env, int from_tty) | |
1583 | { | |
1584 | /* Do the hard work. */ | |
1585 | fork_inferior (exec_file, allargs, env, darwin_ptrace_me, darwin_ptrace_him, | |
e69860f1 | 1586 | darwin_pre_ptrace, NULL, darwin_execvp); |
bb00b29d | 1587 | |
a80b95ba TG |
1588 | /* Return now in case of error. */ |
1589 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1590 | return; | |
1591 | } | |
1592 | \f | |
1593 | ||
726ce67c JB |
1594 | /* Set things up such that the next call to darwin_wait will immediately |
1595 | return a fake stop event for inferior INF. | |
1596 | ||
1597 | This assumes that the inferior's thread list has been initialized, | |
1598 | as it will suspend the inferior's first thread. */ | |
1599 | ||
1600 | static void | |
1601 | darwin_setup_fake_stop_event (struct inferior *inf) | |
1602 | { | |
1603 | darwin_thread_t *thread; | |
1604 | kern_return_t kret; | |
1605 | ||
1606 | gdb_assert (darwin_inf_fake_stop == NULL); | |
1607 | darwin_inf_fake_stop = inf; | |
1608 | ||
1609 | /* When detecting a fake pending stop event, darwin_wait returns | |
1610 | an event saying that the first thread is in a DARWIN_STOPPED | |
1611 | state. To make that accurate, we need to suspend that thread | |
1612 | as well. Otherwise, we'll try resuming it when resuming the | |
1613 | inferior, and get a warning because the thread's suspend count | |
1614 | is already zero, making the resume request useless. */ | |
1615 | thread = VEC_index (darwin_thread_t, inf->private->threads, 0); | |
1616 | kret = thread_suspend (thread->gdb_port); | |
1617 | MACH_CHECK_ERROR (kret); | |
1618 | } | |
1619 | ||
a80b95ba TG |
1620 | /* Attach to process PID, then initialize for debugging it |
1621 | and wait for the trace-trap that results from attaching. */ | |
1622 | static void | |
1623 | darwin_attach (struct target_ops *ops, char *args, int from_tty) | |
1624 | { | |
1625 | pid_t pid; | |
1626 | pid_t pid2; | |
1627 | int wstatus; | |
1628 | int res; | |
1629 | struct inferior *inf; | |
bb00b29d | 1630 | kern_return_t kret; |
a80b95ba | 1631 | |
74164c56 | 1632 | pid = parse_pid_to_attach (args); |
a80b95ba | 1633 | |
74164c56 | 1634 | if (pid == getpid ()) /* Trying to masturbate? */ |
a80b95ba TG |
1635 | error (_("I refuse to debug myself!")); |
1636 | ||
1637 | if (from_tty) | |
bb00b29d TG |
1638 | { |
1639 | char *exec_file = get_exec_file (0); | |
a80b95ba | 1640 | |
bb00b29d TG |
1641 | if (exec_file) |
1642 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
1643 | target_pid_to_str (pid_to_ptid (pid))); | |
1644 | else | |
1645 | printf_unfiltered (_("Attaching to %s\n"), | |
1646 | target_pid_to_str (pid_to_ptid (pid))); | |
1647 | ||
1648 | gdb_flush (gdb_stdout); | |
1649 | } | |
1650 | ||
1651 | if (pid == 0 || kill (pid, 0) < 0) | |
1652 | error (_("Can't attach to process %d: %s (%d)"), | |
1653 | pid, safe_strerror (errno), errno); | |
a80b95ba | 1654 | |
bb00b29d | 1655 | inferior_ptid = pid_to_ptid (pid); |
6c95b8df PA |
1656 | inf = current_inferior (); |
1657 | inferior_appeared (inf, pid); | |
a80b95ba | 1658 | inf->attach_flag = 1; |
6c95b8df | 1659 | |
bb00b29d TG |
1660 | /* Always add a main thread. */ |
1661 | add_thread_silent (inferior_ptid); | |
a80b95ba | 1662 | |
bb00b29d | 1663 | darwin_attach_pid (inf); |
a80b95ba | 1664 | |
bb00b29d | 1665 | darwin_suspend_inferior (inf); |
a80b95ba | 1666 | |
bb00b29d | 1667 | darwin_init_thread_list (inf); |
a80b95ba | 1668 | |
bb00b29d | 1669 | darwin_check_osabi (inf->private, ptid_get_tid (inferior_ptid)); |
a80b95ba | 1670 | |
726ce67c JB |
1671 | darwin_setup_fake_stop_event (inf); |
1672 | ||
bb00b29d | 1673 | inf->private->no_ptrace = 1; |
a80b95ba TG |
1674 | } |
1675 | ||
1676 | /* Take a program previously attached to and detaches it. | |
1677 | The program resumes execution and will no longer stop | |
1678 | on signals, etc. We'd better not have left any breakpoints | |
1679 | in the program or it'll die when it hits one. For this | |
1680 | to work, it may be necessary for the process to have been | |
1681 | previously attached. It *might* work if the program was | |
1682 | started via fork. */ | |
1683 | static void | |
52554a0e | 1684 | darwin_detach (struct target_ops *ops, const char *args, int from_tty) |
a80b95ba | 1685 | { |
bb00b29d TG |
1686 | pid_t pid = ptid_get_pid (inferior_ptid); |
1687 | struct inferior *inf = current_inferior (); | |
a80b95ba TG |
1688 | kern_return_t kret; |
1689 | int res; | |
1690 | ||
bb00b29d | 1691 | /* Display message. */ |
a80b95ba TG |
1692 | if (from_tty) |
1693 | { | |
1694 | char *exec_file = get_exec_file (0); | |
1695 | if (exec_file == 0) | |
1696 | exec_file = ""; | |
bb00b29d TG |
1697 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, |
1698 | target_pid_to_str (pid_to_ptid (pid))); | |
a80b95ba TG |
1699 | gdb_flush (gdb_stdout); |
1700 | } | |
1701 | ||
bb00b29d TG |
1702 | /* If ptrace() is in use, stop the process. */ |
1703 | if (!inf->private->no_ptrace) | |
1704 | darwin_stop_inferior (inf); | |
a80b95ba | 1705 | |
bb00b29d | 1706 | kret = darwin_restore_exception_ports (inf->private); |
a80b95ba TG |
1707 | MACH_CHECK_ERROR (kret); |
1708 | ||
bb00b29d | 1709 | if (!inf->private->no_ptrace) |
a80b95ba | 1710 | { |
bb00b29d TG |
1711 | res = PTRACE (PT_DETACH, inf->pid, 0, 0); |
1712 | if (res != 0) | |
1713 | printf_unfiltered (_("Unable to detach from process-id %d: %s (%d)"), | |
1714 | inf->pid, safe_strerror (errno), errno); | |
a80b95ba TG |
1715 | } |
1716 | ||
bb00b29d | 1717 | darwin_reply_to_all_pending_messages (inf); |
a80b95ba | 1718 | |
5e9bc145 JB |
1719 | /* When using ptrace, we have just performed a PT_DETACH, which |
1720 | resumes the inferior. On the other hand, when we are not using | |
1721 | ptrace, we need to resume its execution ourselves. */ | |
1722 | if (inf->private->no_ptrace) | |
1723 | darwin_resume_inferior (inf); | |
a80b95ba TG |
1724 | |
1725 | darwin_mourn_inferior (ops); | |
1726 | } | |
1727 | ||
1728 | static void | |
1729 | darwin_files_info (struct target_ops *ops) | |
1730 | { | |
a80b95ba TG |
1731 | } |
1732 | ||
1733 | static char * | |
117de6a9 | 1734 | darwin_pid_to_str (struct target_ops *ops, ptid_t ptid) |
a80b95ba | 1735 | { |
bb00b29d TG |
1736 | static char buf[80]; |
1737 | long tid = ptid_get_tid (ptid); | |
1738 | ||
1739 | if (tid != 0) | |
1740 | { | |
1741 | snprintf (buf, sizeof (buf), _("Thread 0x%lx of process %u"), | |
1742 | tid, ptid_get_pid (ptid)); | |
1743 | return buf; | |
1744 | } | |
a80b95ba | 1745 | |
bb00b29d | 1746 | return normal_pid_to_str (ptid); |
a80b95ba TG |
1747 | } |
1748 | ||
1749 | static int | |
28439f5e | 1750 | darwin_thread_alive (struct target_ops *ops, ptid_t ptid) |
a80b95ba TG |
1751 | { |
1752 | return 1; | |
1753 | } | |
1754 | ||
1755 | /* If RDADDR is not NULL, read inferior task's LEN bytes from ADDR and | |
1756 | copy it to RDADDR in gdb's address space. | |
1757 | If WRADDR is not NULL, write gdb's LEN bytes from WRADDR and copy it | |
1758 | to ADDR in inferior task's address space. | |
f00c55f8 | 1759 | Return 0 on failure; number of bytes read / writen otherwise. */ |
a80b95ba TG |
1760 | static int |
1761 | darwin_read_write_inferior (task_t task, CORE_ADDR addr, | |
b9dd1947 | 1762 | gdb_byte *rdaddr, const gdb_byte *wraddr, |
b55e14c7 | 1763 | ULONGEST length) |
a80b95ba | 1764 | { |
bb00b29d | 1765 | kern_return_t kret; |
a80b95ba TG |
1766 | mach_vm_address_t offset = addr & (mach_page_size - 1); |
1767 | mach_vm_address_t low_address = (mach_vm_address_t) (addr - offset); | |
1768 | mach_vm_size_t aligned_length = (mach_vm_size_t) PAGE_ROUND (offset + length); | |
1769 | pointer_t copied; | |
b9dd1947 | 1770 | mach_msg_type_number_t copy_count; |
a80b95ba TG |
1771 | mach_vm_size_t remaining_length; |
1772 | mach_vm_address_t region_address; | |
1773 | mach_vm_size_t region_length; | |
1774 | ||
b55e14c7 YQ |
1775 | inferior_debug (8, _("darwin_read_write_inferior(task=0x%x, %s, len=%s)\n"), |
1776 | task, core_addr_to_string (addr), pulongest (length)); | |
bb00b29d | 1777 | |
0963b4bd | 1778 | /* Get memory from inferior with page aligned addresses. */ |
bb00b29d | 1779 | kret = mach_vm_read (task, low_address, aligned_length, |
a80b95ba | 1780 | &copied, ©_count); |
bb00b29d | 1781 | if (kret != KERN_SUCCESS) |
a80b95ba | 1782 | { |
bb00b29d TG |
1783 | inferior_debug |
1784 | (1, _("darwin_read_write_inferior: mach_vm_read failed at %s: %s"), | |
1785 | core_addr_to_string (addr), mach_error_string (kret)); | |
a80b95ba TG |
1786 | return 0; |
1787 | } | |
1788 | ||
1789 | if (rdaddr != NULL) | |
1790 | memcpy (rdaddr, (char *)copied + offset, length); | |
1791 | ||
1792 | if (wraddr == NULL) | |
1793 | goto out; | |
1794 | ||
1795 | memcpy ((char *)copied + offset, wraddr, length); | |
1796 | ||
1797 | /* Do writes atomically. | |
1798 | First check for holes and unwritable memory. */ | |
1799 | for (region_address = low_address, remaining_length = aligned_length; | |
1800 | region_address < low_address + aligned_length; | |
1801 | region_address += region_length, remaining_length -= region_length) | |
1802 | { | |
bb00b29d TG |
1803 | vm_region_submap_short_info_data_64_t info; |
1804 | mach_vm_address_t region_start = region_address; | |
a80b95ba | 1805 | mach_msg_type_number_t count; |
bb00b29d TG |
1806 | natural_t region_depth; |
1807 | ||
1808 | region_depth = 100000; | |
1809 | count = VM_REGION_SUBMAP_SHORT_INFO_COUNT_64; | |
1810 | kret = mach_vm_region_recurse | |
1811 | (task, ®ion_start, ®ion_length, ®ion_depth, | |
1812 | (vm_region_recurse_info_t) &info, &count); | |
1813 | ||
1814 | if (kret != KERN_SUCCESS) | |
a80b95ba | 1815 | { |
bb00b29d TG |
1816 | inferior_debug (1, _("darwin_read_write_inferior: " |
1817 | "mach_vm_region_recurse failed at %s: %s\n"), | |
1818 | core_addr_to_string (region_address), | |
1819 | mach_error_string (kret)); | |
a80b95ba TG |
1820 | goto out; |
1821 | } | |
1822 | ||
bb00b29d TG |
1823 | inferior_debug |
1824 | (9, _("darwin_read_write_inferior: " | |
1825 | "mach_vm_region_recurse addr=%s, start=%s, len=%s\n"), | |
1826 | core_addr_to_string (region_address), | |
1827 | core_addr_to_string (region_start), | |
1828 | core_addr_to_string (region_length)); | |
1829 | ||
0963b4bd | 1830 | /* Check for holes in memory. */ |
bb00b29d | 1831 | if (region_start > region_address) |
a80b95ba | 1832 | { |
0963b4bd | 1833 | warning (_("No memory at %s (vs %s+0x%x). Nothing written"), |
a80b95ba | 1834 | core_addr_to_string (region_address), |
bb00b29d | 1835 | core_addr_to_string (region_start), |
a80b95ba TG |
1836 | (unsigned)region_length); |
1837 | length = 0; | |
1838 | goto out; | |
1839 | } | |
1840 | ||
bb00b29d TG |
1841 | /* Adjust the length. */ |
1842 | region_length -= (region_address - region_start); | |
1843 | ||
a80b95ba TG |
1844 | if (!(info.max_protection & VM_PROT_WRITE)) |
1845 | { | |
bb00b29d TG |
1846 | kret = mach_vm_protect |
1847 | (task, region_address, region_length, | |
1848 | TRUE, info.max_protection | VM_PROT_WRITE | VM_PROT_COPY); | |
1849 | if (kret != KERN_SUCCESS) | |
1850 | { | |
1851 | warning (_("darwin_read_write_inf: " | |
1852 | "mach_vm_protect max failed at %s: %s"), | |
1853 | core_addr_to_string (region_address), | |
1854 | mach_error_string (kret)); | |
1855 | length = 0; | |
1856 | goto out; | |
1857 | } | |
a80b95ba TG |
1858 | } |
1859 | ||
1860 | if (!(info.protection & VM_PROT_WRITE)) | |
1861 | { | |
bb00b29d | 1862 | kret = mach_vm_protect (task, region_address, region_length, |
a80b95ba | 1863 | FALSE, info.protection | VM_PROT_WRITE); |
bb00b29d | 1864 | if (kret != KERN_SUCCESS) |
a80b95ba | 1865 | { |
bb00b29d TG |
1866 | warning (_("darwin_read_write_inf: " |
1867 | "mach_vm_protect failed at %s (len=0x%lx): %s"), | |
1868 | core_addr_to_string (region_address), | |
1869 | (unsigned long)region_length, mach_error_string (kret)); | |
a80b95ba TG |
1870 | length = 0; |
1871 | goto out; | |
1872 | } | |
1873 | } | |
1874 | } | |
1875 | ||
bb00b29d | 1876 | kret = mach_vm_write (task, low_address, copied, aligned_length); |
a80b95ba | 1877 | |
bb00b29d | 1878 | if (kret != KERN_SUCCESS) |
a80b95ba TG |
1879 | { |
1880 | warning (_("darwin_read_write_inferior: mach_vm_write failed: %s"), | |
bb00b29d | 1881 | mach_error_string (kret)); |
a80b95ba TG |
1882 | length = 0; |
1883 | } | |
1884 | out: | |
1885 | mach_vm_deallocate (mach_task_self (), copied, copy_count); | |
1886 | return length; | |
1887 | } | |
1888 | ||
f00c55f8 TG |
1889 | /* Read LENGTH bytes at offset ADDR of task_dyld_info for TASK, and copy them |
1890 | to RDADDR. | |
569283d4 | 1891 | Return 0 on failure; number of bytes read / written otherwise. */ |
f00c55f8 | 1892 | |
b967eb24 | 1893 | #ifdef TASK_DYLD_INFO_COUNT |
569283d4 | 1894 | /* This is not available in Darwin 9. */ |
9b409511 | 1895 | static enum target_xfer_status |
b9dd1947 | 1896 | darwin_read_dyld_info (task_t task, CORE_ADDR addr, gdb_byte *rdaddr, |
9b409511 | 1897 | ULONGEST length, ULONGEST *xfered_len) |
f00c55f8 TG |
1898 | { |
1899 | struct task_dyld_info task_dyld_info; | |
1900 | mach_msg_type_number_t count = TASK_DYLD_INFO_COUNT; | |
1901 | int sz = TASK_DYLD_INFO_COUNT * sizeof (natural_t); | |
1902 | kern_return_t kret; | |
1903 | ||
1904 | if (addr >= sz) | |
9b409511 | 1905 | return TARGET_XFER_EOF; |
f00c55f8 TG |
1906 | |
1907 | kret = task_info (task, TASK_DYLD_INFO, (task_info_t) &task_dyld_info, &count); | |
1908 | MACH_CHECK_ERROR (kret); | |
1909 | if (kret != KERN_SUCCESS) | |
2ed4b548 | 1910 | return TARGET_XFER_E_IO; |
f00c55f8 TG |
1911 | /* Truncate. */ |
1912 | if (addr + length > sz) | |
1913 | length = sz - addr; | |
1914 | memcpy (rdaddr, (char *)&task_dyld_info + addr, length); | |
9b409511 YQ |
1915 | *xfered_len = (ULONGEST) length; |
1916 | return TARGET_XFER_OK; | |
f00c55f8 | 1917 | } |
569283d4 | 1918 | #endif |
f00c55f8 | 1919 | |
a80b95ba | 1920 | \f |
a80b95ba TG |
1921 | |
1922 | static LONGEST | |
1923 | darwin_xfer_partial (struct target_ops *ops, | |
1924 | enum target_object object, const char *annex, | |
1925 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
9b409511 | 1926 | ULONGEST offset, ULONGEST len, ULONGEST *xfered_len) |
a80b95ba | 1927 | { |
bb00b29d TG |
1928 | struct inferior *inf = current_inferior (); |
1929 | ||
1930 | inferior_debug | |
b55e14c7 YQ |
1931 | (8, _("darwin_xfer_partial(%s, %s, rbuf=%s, wbuf=%s) pid=%u\n"), |
1932 | core_addr_to_string (offset), pulongest (len), | |
854f4b0e TG |
1933 | host_address_to_string (readbuf), host_address_to_string (writebuf), |
1934 | inf->pid); | |
a80b95ba | 1935 | |
f00c55f8 TG |
1936 | switch (object) |
1937 | { | |
1938 | case TARGET_OBJECT_MEMORY: | |
9b409511 YQ |
1939 | { |
1940 | int l = darwin_read_write_inferior (inf->private->task, offset, | |
1941 | readbuf, writebuf, len); | |
1942 | ||
1943 | if (l == 0) | |
1944 | return TARGET_XFER_EOF; | |
1945 | else | |
1946 | { | |
1947 | gdb_assert (l > 0); | |
1948 | *xfered_len = (ULONGEST) l; | |
1949 | return TARGET_XFER_OK; | |
1950 | } | |
1951 | } | |
569283d4 | 1952 | #ifdef TASK_DYLD_INFO_COUNT |
f00c55f8 TG |
1953 | case TARGET_OBJECT_DARWIN_DYLD_INFO: |
1954 | if (writebuf != NULL || readbuf == NULL) | |
1955 | { | |
1956 | /* Support only read. */ | |
2ed4b548 | 1957 | return TARGET_XFER_E_IO; |
f00c55f8 | 1958 | } |
9b409511 YQ |
1959 | return darwin_read_dyld_info (inf->private->task, offset, readbuf, len, |
1960 | xfered_len); | |
569283d4 | 1961 | #endif |
f00c55f8 | 1962 | default: |
2ed4b548 | 1963 | return TARGET_XFER_E_IO; |
f00c55f8 | 1964 | } |
a80b95ba | 1965 | |
a80b95ba TG |
1966 | } |
1967 | ||
1968 | static void | |
1969 | set_enable_mach_exceptions (char *args, int from_tty, | |
1970 | struct cmd_list_element *c) | |
1971 | { | |
bb00b29d | 1972 | if (!ptid_equal (inferior_ptid, null_ptid)) |
a80b95ba | 1973 | { |
bb00b29d | 1974 | struct inferior *inf = current_inferior (); |
a80b95ba TG |
1975 | exception_mask_t mask; |
1976 | kern_return_t kret; | |
1977 | ||
1978 | if (enable_mach_exceptions) | |
1979 | mask = EXC_MASK_ALL; | |
1980 | else | |
1981 | { | |
bb00b29d TG |
1982 | darwin_restore_exception_ports (inf->private); |
1983 | mask = EXC_MASK_SOFTWARE | EXC_MASK_BREAKPOINT; | |
a80b95ba | 1984 | } |
bb00b29d | 1985 | kret = task_set_exception_ports (inf->private->task, mask, darwin_ex_port, |
a80b95ba TG |
1986 | EXCEPTION_DEFAULT, THREAD_STATE_NONE); |
1987 | MACH_CHECK_ERROR (kret); | |
1988 | } | |
1989 | } | |
1990 | ||
bb00b29d | 1991 | static char * |
8dd27370 | 1992 | darwin_pid_to_exec_file (struct target_ops *self, int pid) |
bb00b29d TG |
1993 | { |
1994 | char *path; | |
1995 | int res; | |
1996 | ||
d8d2a3ee | 1997 | path = xmalloc (PATH_MAX); |
bb00b29d TG |
1998 | make_cleanup (xfree, path); |
1999 | ||
d8d2a3ee | 2000 | res = proc_pidinfo (pid, PROC_PIDPATHINFO, 0, path, PATH_MAX); |
bb00b29d TG |
2001 | if (res >= 0) |
2002 | return path; | |
2003 | else | |
2004 | return NULL; | |
2005 | } | |
2006 | ||
2007 | static ptid_t | |
2008 | darwin_get_ada_task_ptid (long lwp, long thread) | |
2009 | { | |
2010 | int i; | |
2011 | darwin_thread_t *t; | |
2012 | int k; | |
2013 | struct inferior *inf = current_inferior (); | |
2014 | kern_return_t kret; | |
2015 | mach_port_name_array_t names; | |
2016 | mach_msg_type_number_t names_count; | |
2017 | mach_port_type_array_t types; | |
2018 | mach_msg_type_number_t types_count; | |
2019 | long res = 0; | |
2020 | ||
2021 | /* First linear search. */ | |
2022 | for (k = 0; | |
2023 | VEC_iterate (darwin_thread_t, inf->private->threads, k, t); | |
2024 | k++) | |
2025 | if (t->inf_port == lwp) | |
2026 | return ptid_build (ptid_get_pid (inferior_ptid), 0, t->gdb_port); | |
2027 | ||
2028 | /* Maybe the port was never extract. Do it now. */ | |
2029 | ||
2030 | /* First get inferior port names. */ | |
2031 | kret = mach_port_names (inf->private->task, &names, &names_count, &types, | |
2032 | &types_count); | |
2033 | MACH_CHECK_ERROR (kret); | |
2034 | if (kret != KERN_SUCCESS) | |
2035 | return null_ptid; | |
2036 | ||
2037 | /* For each name, copy the right in the gdb space and then compare with | |
2038 | our view of the inferior threads. We don't forget to deallocate the | |
2039 | right. */ | |
2040 | for (i = 0; i < names_count; i++) | |
2041 | { | |
2042 | mach_port_t local_name; | |
2043 | mach_msg_type_name_t local_type; | |
2044 | ||
2045 | /* We just need to know the corresponding name in gdb name space. | |
2046 | So extract and deallocate the right. */ | |
2047 | kret = mach_port_extract_right (inf->private->task, names[i], | |
2048 | MACH_MSG_TYPE_COPY_SEND, | |
2049 | &local_name, &local_type); | |
2050 | if (kret != KERN_SUCCESS) | |
2051 | continue; | |
2052 | mach_port_deallocate (gdb_task, local_name); | |
2053 | ||
2054 | for (k = 0; | |
2055 | VEC_iterate (darwin_thread_t, inf->private->threads, k, t); | |
2056 | k++) | |
2057 | if (t->gdb_port == local_name) | |
2058 | { | |
2059 | t->inf_port = names[i]; | |
2060 | if (names[i] == lwp) | |
2061 | res = t->gdb_port; | |
2062 | } | |
2063 | } | |
2064 | ||
2065 | vm_deallocate (gdb_task, (vm_address_t) names, | |
2066 | names_count * sizeof (mach_port_t)); | |
2067 | ||
2068 | if (res) | |
2069 | return ptid_build (ptid_get_pid (inferior_ptid), 0, res); | |
2070 | else | |
2071 | return null_ptid; | |
2072 | } | |
2073 | ||
2074 | static int | |
2075 | darwin_supports_multi_process (void) | |
2076 | { | |
2077 | return 1; | |
2078 | } | |
2079 | ||
c381a3f6 JB |
2080 | /* -Wmissing-prototypes */ |
2081 | extern initialize_file_ftype _initialize_darwin_inferior; | |
2082 | ||
a80b95ba | 2083 | void |
bb00b29d | 2084 | _initialize_darwin_inferior (void) |
a80b95ba TG |
2085 | { |
2086 | kern_return_t kret; | |
2087 | ||
a80b95ba TG |
2088 | gdb_task = mach_task_self (); |
2089 | darwin_host_self = mach_host_self (); | |
2090 | ||
2091 | /* Read page size. */ | |
2092 | kret = host_page_size (darwin_host_self, &mach_page_size); | |
2093 | if (kret != KERN_SUCCESS) | |
2094 | { | |
2095 | mach_page_size = 0x1000; | |
2096 | MACH_CHECK_ERROR (kret); | |
2097 | } | |
2098 | ||
a80b95ba TG |
2099 | darwin_ops = inf_child_target (); |
2100 | ||
2101 | darwin_ops->to_shortname = "darwin-child"; | |
2102 | darwin_ops->to_longname = _("Darwin child process"); | |
2103 | darwin_ops->to_doc = | |
2104 | _("Darwin child process (started by the \"run\" command)."); | |
2105 | darwin_ops->to_create_inferior = darwin_create_inferior; | |
2106 | darwin_ops->to_attach = darwin_attach; | |
2107 | darwin_ops->to_attach_no_wait = 0; | |
2108 | darwin_ops->to_detach = darwin_detach; | |
2109 | darwin_ops->to_files_info = darwin_files_info; | |
bb00b29d | 2110 | darwin_ops->to_wait = darwin_wait_to; |
a80b95ba TG |
2111 | darwin_ops->to_mourn_inferior = darwin_mourn_inferior; |
2112 | darwin_ops->to_kill = darwin_kill_inferior; | |
2113 | darwin_ops->to_stop = darwin_stop; | |
bb00b29d | 2114 | darwin_ops->to_resume = darwin_resume_to; |
a80b95ba TG |
2115 | darwin_ops->to_thread_alive = darwin_thread_alive; |
2116 | darwin_ops->to_pid_to_str = darwin_pid_to_str; | |
bb00b29d | 2117 | darwin_ops->to_pid_to_exec_file = darwin_pid_to_exec_file; |
a80b95ba | 2118 | darwin_ops->to_load = NULL; |
a80b95ba | 2119 | darwin_ops->to_xfer_partial = darwin_xfer_partial; |
bb00b29d TG |
2120 | darwin_ops->to_supports_multi_process = darwin_supports_multi_process; |
2121 | darwin_ops->to_get_ada_task_ptid = darwin_get_ada_task_ptid; | |
a80b95ba TG |
2122 | |
2123 | darwin_complete_target (darwin_ops); | |
2124 | ||
2125 | add_target (darwin_ops); | |
2126 | ||
2127 | inferior_debug (2, _("GDB task: 0x%lx, pid: %d\n"), mach_task_self (), | |
2128 | getpid ()); | |
2129 | ||
ccce17b0 YQ |
2130 | add_setshow_zuinteger_cmd ("darwin", class_obscure, |
2131 | &darwin_debug_flag, _("\ | |
a80b95ba TG |
2132 | Set if printing inferior communication debugging statements."), _("\ |
2133 | Show if printing inferior communication debugging statements."), NULL, | |
ccce17b0 YQ |
2134 | NULL, NULL, |
2135 | &setdebuglist, &showdebuglist); | |
a80b95ba TG |
2136 | |
2137 | add_setshow_boolean_cmd ("mach-exceptions", class_support, | |
2138 | &enable_mach_exceptions, _("\ | |
2139 | Set if mach exceptions are caught."), _("\ | |
2140 | Show if mach exceptions are caught."), _("\ | |
2141 | When this mode is on, all low level exceptions are reported before being\n\ | |
2142 | reported by the kernel."), | |
2143 | &set_enable_mach_exceptions, NULL, | |
2144 | &setlist, &showlist); | |
2145 | } |