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c2d751d5 JK |
1 | /* Interface GDB to Mach 3.0 operating systems. |
2 | (Most) Mach 3.0 related routines live in this file. | |
3 | ||
8a7dfaa0 | 4 | Copyright (C) 1992, 1996, 1999 Free Software Foundation, Inc. |
c2d751d5 JK |
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 2 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 | |
19 | along with this program; if not, write to the Free Software | |
6c9638b4 | 20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
c2d751d5 JK |
21 | |
22 | /* | |
23 | * Author: Jukka Virtanen <jtv@hut.fi> | |
24 | * Computing Centre | |
25 | * Helsinki University of Technology | |
26 | * Finland | |
27 | * | |
28 | * Thanks to my friends who helped with ideas and testing: | |
29 | * | |
30 | * Johannes Helander, Antti Louko, Tero Mononen, | |
31 | * jvh@cs.hut.fi alo@hut.fi tmo@cs.hut.fi | |
32 | * | |
33 | * Tero Kivinen and Eamonn McManus | |
34 | * kivinen@cs.hut.fi emcmanus@gr.osf.org | |
35 | * | |
36 | */ | |
37 | ||
38 | #include <stdio.h> | |
39 | ||
40 | #include <mach.h> | |
41 | #include <servers/netname.h> | |
42 | #include <servers/machid.h> | |
43 | #include <mach/message.h> | |
44 | #include <mach/notify.h> | |
45 | #include <mach_error.h> | |
46 | #include <mach/exception.h> | |
47 | #include <mach/vm_attributes.h> | |
48 | ||
49 | #include "defs.h" | |
50 | #include "inferior.h" | |
51 | #include "symtab.h" | |
52 | #include "value.h" | |
53 | #include "language.h" | |
54 | #include "target.h" | |
55 | #include "wait.h" | |
56 | #include "gdbcmd.h" | |
493424b1 | 57 | #include "gdbcore.h" |
c2d751d5 | 58 | |
493424b1 | 59 | #if 0 |
c2d751d5 | 60 | #include <servers/machid_lib.h> |
493424b1 JK |
61 | #else |
62 | #define MACH_TYPE_TASK 1 | |
63 | #define MACH_TYPE_THREAD 2 | |
64 | #endif | |
c2d751d5 JK |
65 | |
66 | /* Included only for signal names and NSIG | |
67 | * | |
68 | * note: There are many problems in signal handling with | |
69 | * gdb in Mach 3.0 in general. | |
70 | */ | |
71 | #include <signal.h> | |
72 | #define SIG_UNKNOWN 0 /* Exception that has no matching unix signal */ | |
73 | ||
843cea0d JK |
74 | #include <cthreads.h> |
75 | ||
5d76c8e6 JK |
76 | /* This is what a cproc looks like. This is here partly because |
77 | cthread_internals.h is not a header we can just #include, partly with | |
78 | an eye towards perhaps getting this to work with cross-debugging | |
79 | someday. Best solution is if CMU publishes a real interface to this | |
80 | stuff. */ | |
81 | #define CPROC_NEXT_OFFSET 0 | |
82 | #define CPROC_NEXT_SIZE (TARGET_PTR_BIT / HOST_CHAR_BIT) | |
83 | #define CPROC_INCARNATION_OFFSET (CPROC_NEXT_OFFSET + CPROC_NEXT_SIZE) | |
84 | #define CPROC_INCARNATION_SIZE (sizeof (cthread_t)) | |
85 | #define CPROC_LIST_OFFSET (CPROC_INCARNATION_OFFSET + CPROC_INCARNATION_SIZE) | |
86 | #define CPROC_LIST_SIZE (TARGET_PTR_BIT / HOST_CHAR_BIT) | |
87 | #define CPROC_WAIT_OFFSET (CPROC_LIST_OFFSET + CPROC_LIST_SIZE) | |
88 | #define CPROC_WAIT_SIZE (TARGET_PTR_BIT / HOST_CHAR_BIT) | |
89 | #define CPROC_REPLY_OFFSET (CPROC_WAIT_OFFSET + CPROC_WAIT_SIZE) | |
90 | #define CPROC_REPLY_SIZE (sizeof (mach_port_t)) | |
91 | #define CPROC_CONTEXT_OFFSET (CPROC_REPLY_OFFSET + CPROC_REPLY_SIZE) | |
92 | #define CPROC_CONTEXT_SIZE (TARGET_INT_BIT / HOST_CHAR_BIT) | |
93 | #define CPROC_LOCK_OFFSET (CPROC_CONTEXT_OFFSET + CPROC_CONTEXT_SIZE) | |
94 | #define CPROC_LOCK_SIZE (sizeof (spin_lock_t)) | |
95 | #define CPROC_STATE_OFFSET (CPROC_LOCK_OFFSET + CPROC_LOCK_SIZE) | |
96 | #define CPROC_STATE_SIZE (TARGET_INT_BIT / HOST_CHAR_BIT) | |
97 | #define CPROC_WIRED_OFFSET (CPROC_STATE_OFFSET + CPROC_STATE_SIZE) | |
98 | #define CPROC_WIRED_SIZE (sizeof (mach_port_t)) | |
99 | #define CPROC_BUSY_OFFSET (CPROC_WIRED_OFFSET + CPROC_WIRED_SIZE) | |
100 | #define CPROC_BUSY_SIZE (TARGET_INT_BIT / HOST_CHAR_BIT) | |
101 | #define CPROC_MSG_OFFSET (CPROC_BUSY_OFFSET + CPROC_BUSY_SIZE) | |
102 | #define CPROC_MSG_SIZE (sizeof (mach_msg_header_t)) | |
103 | #define CPROC_BASE_OFFSET (CPROC_MSG_OFFSET + CPROC_MSG_SIZE) | |
104 | #define CPROC_BASE_SIZE (TARGET_INT_BIT / HOST_CHAR_BIT) | |
105 | #define CPROC_SIZE_OFFSET (CPROC_BASE_OFFSET + CPROC_BASE_SIZE) | |
106 | #define CPROC_SIZE_SIZE (TARGET_INT_BIT / HOST_CHAR_BIT) | |
107 | #define CPROC_SIZE (CPROC_SIZE_OFFSET + CPROC_SIZE_SIZE) | |
108 | ||
109 | /* Values for the state field in the cproc. */ | |
110 | #define CPROC_RUNNING 0 | |
111 | #define CPROC_SWITCHING 1 | |
112 | #define CPROC_BLOCKED 2 | |
113 | #define CPROC_CONDWAIT 4 | |
843cea0d JK |
114 | |
115 | /* For cproc and kernel thread mapping */ | |
116 | typedef struct gdb_thread { | |
117 | mach_port_t name; | |
118 | CORE_ADDR sp; | |
119 | CORE_ADDR pc; | |
120 | CORE_ADDR fp; | |
843cea0d JK |
121 | boolean_t in_emulator; |
122 | int slotid; | |
5d76c8e6 JK |
123 | |
124 | /* This is for the mthreads list. It points to the cproc list. | |
125 | Perhaps the two lists should be merged (or perhaps it was a mistake | |
126 | to make them both use a struct gdb_thread). */ | |
127 | struct gdb_thread *cproc; | |
128 | ||
129 | /* These are for the cproc list, which is linked through the next field | |
130 | of the struct gdb_thread. */ | |
131 | char raw_cproc[CPROC_SIZE]; | |
132 | /* The cthread which is pointed to by the incarnation field from the | |
133 | cproc. This points to the copy we've read into GDB. */ | |
134 | cthread_t cthread; | |
135 | /* Point back to the mthreads list. */ | |
136 | int reverse_map; | |
137 | struct gdb_thread *next; | |
843cea0d | 138 | } *gdb_thread_t; |
c2d751d5 JK |
139 | |
140 | /* | |
141 | * Actions for Mach exceptions. | |
142 | * | |
143 | * sigmap field maps the exception to corresponding Unix signal. | |
144 | * | |
145 | * I do not know how to map the exception to unix signal | |
146 | * if SIG_UNKNOWN is specified. | |
147 | */ | |
148 | ||
149 | struct exception_list { | |
150 | char *name; | |
151 | boolean_t forward; | |
152 | boolean_t print; | |
153 | int sigmap; | |
154 | } exception_map[] = { | |
155 | {"not_mach3_exception", FALSE, TRUE, SIG_UNKNOWN}, | |
156 | {"EXC_BAD_ACCESS", FALSE, TRUE, SIGSEGV}, | |
157 | {"EXC_BAD_INSTRUCTION", FALSE, TRUE, SIGILL}, | |
158 | {"EXC_ARITHMETIC", FALSE, TRUE, SIGFPE}, | |
159 | {"EXC_EMULATION", FALSE, TRUE, SIGEMT}, /* ??? */ | |
160 | {"EXC_SOFTWARE", FALSE, TRUE, SIG_UNKNOWN}, | |
161 | {"EXC_BREAKPOINT", FALSE, FALSE, SIGTRAP} | |
162 | }; | |
163 | ||
164 | /* Mach exception table size */ | |
165 | int max_exception = sizeof(exception_map)/sizeof(struct exception_list) - 1; | |
166 | ||
167 | #define MAX_EXCEPTION max_exception | |
168 | ||
169 | WAITTYPE wait_status; | |
170 | ||
171 | /* If you define this, intercepted bsd server calls will be | |
172 | * dumped while waiting the inferior to EXEC the correct | |
173 | * program | |
174 | */ | |
175 | /* #define DUMP_SYSCALL /* debugging interceptor */ | |
176 | ||
177 | /* xx_debug() outputs messages if this is nonzero. | |
178 | * If > 1, DUMP_SYSCALL will dump message contents. | |
179 | */ | |
180 | int debug_level = 0; | |
181 | ||
182 | /* "Temporary" debug stuff */ | |
183 | void | |
184 | xx_debug (fmt, a,b,c) | |
185 | char *fmt; | |
186 | int a,b,c; | |
187 | { | |
188 | if (debug_level) | |
5d76c8e6 | 189 | warning (fmt, a, b, c); |
c2d751d5 JK |
190 | } |
191 | ||
192 | /* This is in libmach.a */ | |
193 | extern mach_port_t name_server_port; | |
194 | ||
195 | /* Set in catch_exception_raise */ | |
196 | int stop_exception, stop_code, stop_subcode; | |
197 | int stopped_in_exception; | |
198 | ||
199 | /* Thread that was the active thread when we stopped */ | |
200 | thread_t stop_thread = MACH_PORT_NULL; | |
201 | ||
202 | char *hostname = ""; | |
203 | ||
204 | /* Set when task is attached or created */ | |
205 | boolean_t emulator_present = FALSE; | |
206 | ||
207 | task_t inferior_task; | |
208 | thread_t current_thread; | |
209 | ||
210 | /* Exception ports for inferior task */ | |
211 | mach_port_t inferior_exception_port = MACH_PORT_NULL; | |
212 | mach_port_t inferior_old_exception_port = MACH_PORT_NULL; | |
213 | ||
214 | /* task exceptions and notifications */ | |
215 | mach_port_t inferior_wait_port_set = MACH_PORT_NULL; | |
216 | mach_port_t our_notify_port = MACH_PORT_NULL; | |
217 | ||
218 | /* This is "inferior_wait_port_set" when not single stepping, and | |
219 | * "singlestepped_thread_port" when we are single stepping. | |
220 | * | |
221 | * This is protected by a cleanup function: discard_single_step() | |
222 | */ | |
223 | mach_port_t currently_waiting_for = MACH_PORT_NULL; | |
224 | ||
225 | /* A port for external messages to gdb. | |
226 | * External in the meaning that they do not come | |
227 | * from the inferior_task, but rather from external | |
228 | * tasks. | |
229 | * | |
230 | * As a debugging feature: | |
231 | * A debugger debugging another debugger can stop the | |
232 | * inferior debugger by the following command sequence | |
233 | * (without running external programs) | |
234 | * | |
235 | * (top-gdb) set stop_inferior_gdb () | |
236 | * (top-gdb) continue | |
237 | */ | |
238 | mach_port_t our_message_port = MACH_PORT_NULL; | |
239 | ||
240 | /* For single stepping */ | |
241 | mach_port_t thread_exception_port = MACH_PORT_NULL; | |
242 | mach_port_t thread_saved_exception_port = MACH_PORT_NULL; | |
243 | mach_port_t singlestepped_thread_port = MACH_PORT_NULL; | |
244 | ||
245 | /* For machid calls */ | |
246 | mach_port_t mid_server = MACH_PORT_NULL; | |
247 | mach_port_t mid_auth = MACH_PORT_NULL; | |
248 | ||
249 | /* If gdb thinks the inferior task is not suspended, it | |
250 | * must take suspend/abort the threads when it reads the state. | |
251 | */ | |
252 | int must_suspend_thread = 0; | |
253 | ||
254 | /* When single stepping, we switch the port that mach_really_wait() listens to. | |
255 | * This cleanup is a guard to prevent the port set from being left to | |
256 | * the singlestepped_thread_port when error() is called. | |
257 | * This is nonzero only when we are single stepping. | |
258 | */ | |
259 | #define NULL_CLEANUP (struct cleanup *)0 | |
260 | struct cleanup *cleanup_step = NULL_CLEANUP; | |
261 | ||
493424b1 | 262 | \f |
8a7dfaa0 SS |
263 | static struct target_ops m3_ops; |
264 | ||
f4e0e098 | 265 | static void m3_kill_inferior (); |
c2d751d5 JK |
266 | \f |
267 | #if 0 | |
268 | #define MACH_TYPE_EXCEPTION_PORT -1 | |
269 | #endif | |
270 | ||
271 | /* Chain of ports to remember requested notifications. */ | |
272 | ||
273 | struct port_chain { | |
274 | struct port_chain *next; | |
275 | mach_port_t port; | |
276 | int type; | |
277 | int mid; /* Now only valid with MACH_TYPE_THREAD and */ | |
278 | /* MACH_TYPE_THREAD */ | |
279 | }; | |
280 | typedef struct port_chain *port_chain_t; | |
281 | ||
282 | /* Room for chain nodes comes from pchain_obstack */ | |
283 | struct obstack pchain_obstack; | |
284 | struct obstack *port_chain_obstack = &pchain_obstack; | |
285 | ||
286 | /* For thread handling */ | |
287 | struct obstack Cproc_obstack; | |
288 | struct obstack *cproc_obstack = &Cproc_obstack; | |
289 | ||
290 | /* the list of notified ports */ | |
291 | port_chain_t notify_chain = (port_chain_t) NULL; | |
292 | ||
293 | port_chain_t | |
294 | port_chain_insert (list, name, type) | |
295 | port_chain_t list; | |
296 | mach_port_t name; | |
297 | int type; | |
298 | { | |
299 | kern_return_t ret; | |
300 | port_chain_t new; | |
301 | int mid; | |
302 | ||
303 | if (! MACH_PORT_VALID (name)) | |
304 | return list; | |
305 | ||
306 | if (type == MACH_TYPE_TASK || type == MACH_TYPE_THREAD) | |
307 | { | |
308 | if (! MACH_PORT_VALID (mid_server)) | |
309 | { | |
5d76c8e6 | 310 | warning ("Machid server port invalid, can not map port 0x%x to MID", |
c2d751d5 JK |
311 | name); |
312 | mid = name; | |
313 | } | |
314 | else | |
315 | { | |
316 | ret = machid_mach_register (mid_server, mid_auth, name, type, &mid); | |
317 | ||
318 | if (ret != KERN_SUCCESS) | |
319 | { | |
5d76c8e6 | 320 | warning ("Can not map name (0x%x) to MID with machid", name); |
c2d751d5 JK |
321 | mid = name; |
322 | } | |
323 | } | |
324 | } | |
325 | else | |
f4e0e098 | 326 | abort (); |
c2d751d5 JK |
327 | |
328 | new = (port_chain_t) obstack_alloc (port_chain_obstack, | |
329 | sizeof (struct port_chain)); | |
330 | new->next = list; | |
331 | new->port = name; | |
332 | new->type = type; | |
333 | new->mid = mid; | |
334 | ||
335 | return new; | |
336 | } | |
337 | ||
338 | port_chain_t | |
339 | port_chain_delete (list, elem) | |
340 | port_chain_t list; | |
341 | mach_port_t elem; | |
342 | { | |
343 | if (list) | |
344 | if (list->port == elem) | |
345 | list = list->next; | |
346 | else | |
347 | while (list->next) | |
348 | { | |
349 | if (list->next->port == elem) | |
350 | list->next = list->next->next; /* GCd with obstack_free() */ | |
351 | else | |
352 | list = list->next; | |
353 | } | |
354 | return list; | |
355 | } | |
356 | ||
357 | void | |
358 | port_chain_destroy (ostack) | |
359 | struct obstack *ostack; | |
360 | { | |
361 | obstack_free (ostack, 0); | |
362 | obstack_init (ostack); | |
363 | } | |
364 | ||
365 | port_chain_t | |
366 | port_chain_member (list, elem) | |
367 | port_chain_t list; | |
368 | mach_port_t elem; | |
369 | { | |
370 | while (list) | |
371 | { | |
372 | if (list->port == elem) | |
373 | return list; | |
374 | list = list->next; | |
375 | } | |
376 | return (port_chain_t) NULL; | |
377 | } | |
378 | \f | |
379 | int | |
380 | map_port_name_to_mid (name, type) | |
381 | mach_port_t name; | |
382 | int type; | |
383 | { | |
384 | port_chain_t elem; | |
385 | ||
386 | if (!MACH_PORT_VALID (name)) | |
387 | return -1; | |
388 | ||
389 | elem = port_chain_member (notify_chain, name); | |
390 | ||
391 | if (elem && (elem->type == type)) | |
392 | return elem->mid; | |
393 | ||
394 | if (elem) | |
395 | return -1; | |
396 | ||
397 | if (! MACH_PORT_VALID (mid_server)) | |
398 | { | |
5d76c8e6 | 399 | warning ("Machid server port invalid, can not map port 0x%x to mid", |
c2d751d5 JK |
400 | name); |
401 | return -1; | |
402 | } | |
403 | else | |
404 | { | |
405 | int mid; | |
406 | kern_return_t ret; | |
407 | ||
408 | ret = machid_mach_register (mid_server, mid_auth, name, type, &mid); | |
409 | ||
410 | if (ret != KERN_SUCCESS) | |
411 | { | |
5d76c8e6 | 412 | warning ("Can not map name (0x%x) to mid with machid", name); |
c2d751d5 JK |
413 | return -1; |
414 | } | |
415 | return mid; | |
416 | } | |
417 | } | |
418 | \f | |
419 | /* Guard for currently_waiting_for and singlestepped_thread_port */ | |
843cea0d | 420 | static void |
c2d751d5 JK |
421 | discard_single_step (thread) |
422 | thread_t thread; | |
423 | { | |
424 | currently_waiting_for = inferior_wait_port_set; | |
425 | ||
426 | cleanup_step = NULL_CLEANUP; | |
427 | if (MACH_PORT_VALID (thread) && MACH_PORT_VALID (singlestepped_thread_port)) | |
428 | setup_single_step (thread, FALSE); | |
429 | } | |
430 | ||
431 | setup_single_step (thread, start_step) | |
432 | thread_t thread; | |
433 | boolean_t start_step; | |
434 | { | |
435 | kern_return_t ret; | |
436 | ||
437 | if (! MACH_PORT_VALID (thread)) | |
438 | error ("Invalid thread supplied to setup_single_step"); | |
439 | else | |
440 | { | |
441 | mach_port_t teport; | |
442 | ||
443 | /* Get the current thread exception port */ | |
444 | ret = thread_get_exception_port (thread, &teport); | |
445 | CHK ("Getting thread's exception port", ret); | |
446 | ||
447 | if (start_step) | |
448 | { | |
449 | if (MACH_PORT_VALID (singlestepped_thread_port)) | |
450 | { | |
5d76c8e6 | 451 | warning ("Singlestepped_thread_port (0x%x) is still valid?", |
c2d751d5 JK |
452 | singlestepped_thread_port); |
453 | singlestepped_thread_port = MACH_PORT_NULL; | |
454 | } | |
455 | ||
456 | /* If we are already stepping this thread */ | |
457 | if (MACH_PORT_VALID (teport) && teport == thread_exception_port) | |
458 | { | |
459 | ret = mach_port_deallocate (mach_task_self (), teport); | |
460 | CHK ("Could not deallocate thread exception port", ret); | |
461 | } | |
462 | else | |
463 | { | |
464 | ret = thread_set_exception_port (thread, thread_exception_port); | |
465 | CHK ("Setting exception port for thread", ret); | |
466 | #if 0 | |
467 | /* Insert thread exception port to wait port set */ | |
468 | ret = mach_port_move_member (mach_task_self(), | |
469 | thread_exception_port, | |
470 | inferior_wait_port_set); | |
471 | CHK ("Moving thread exception port to inferior_wait_port_set", | |
472 | ret); | |
473 | #endif | |
474 | thread_saved_exception_port = teport; | |
475 | } | |
476 | ||
477 | thread_trace (thread, TRUE); | |
478 | ||
479 | singlestepped_thread_port = thread_exception_port; | |
480 | currently_waiting_for = singlestepped_thread_port; | |
481 | cleanup_step = make_cleanup (discard_single_step, thread); | |
482 | } | |
483 | else | |
484 | { | |
485 | if (! MACH_PORT_VALID (teport)) | |
486 | error ("Single stepped thread had an invalid exception port?"); | |
487 | ||
488 | if (teport != thread_exception_port) | |
489 | error ("Single stepped thread had an unknown exception port?"); | |
490 | ||
491 | ret = mach_port_deallocate (mach_task_self (), teport); | |
492 | CHK ("Couldn't deallocate thread exception port", ret); | |
493 | #if 0 | |
494 | /* Remove thread exception port from wait port set */ | |
495 | ret = mach_port_move_member (mach_task_self(), | |
496 | thread_exception_port, | |
497 | MACH_PORT_NULL); | |
498 | CHK ("Removing thread exception port from inferior_wait_port_set", | |
499 | ret); | |
500 | #endif | |
501 | /* Restore thread's old exception port */ | |
502 | ret = thread_set_exception_port (thread, | |
503 | thread_saved_exception_port); | |
504 | CHK ("Restoring stepped thread's exception port", ret); | |
505 | ||
506 | if (MACH_PORT_VALID (thread_saved_exception_port)) | |
507 | (void) mach_port_deallocate (mach_task_self (), | |
508 | thread_saved_exception_port); | |
509 | ||
510 | thread_trace (thread, FALSE); | |
511 | ||
512 | singlestepped_thread_port = MACH_PORT_NULL; | |
513 | currently_waiting_for = inferior_wait_port_set; | |
514 | if (cleanup_step) | |
515 | discard_cleanups (cleanup_step); | |
516 | } | |
517 | } | |
518 | } | |
519 | \f | |
843cea0d | 520 | static |
c2d751d5 JK |
521 | request_notify (name, variant, type) |
522 | mach_port_t name; | |
523 | mach_msg_id_t variant; | |
524 | int type; | |
525 | { | |
526 | kern_return_t ret; | |
527 | mach_port_t previous_port_dummy = MACH_PORT_NULL; | |
528 | ||
529 | if (! MACH_PORT_VALID (name)) | |
530 | return; | |
531 | ||
532 | if (port_chain_member (notify_chain, name)) | |
533 | return; | |
534 | ||
535 | ret = mach_port_request_notification (mach_task_self(), | |
536 | name, | |
537 | variant, | |
538 | 1, | |
539 | our_notify_port, | |
540 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
541 | &previous_port_dummy); | |
542 | CHK ("Serious: request_notify failed", ret); | |
543 | ||
544 | (void) mach_port_deallocate (mach_task_self (), | |
545 | previous_port_dummy); | |
546 | ||
547 | notify_chain = port_chain_insert (notify_chain, name, type); | |
548 | } | |
549 | ||
550 | reverse_msg_bits(msgp, type) | |
551 | mach_msg_header_t *msgp; | |
552 | int type; | |
553 | { | |
554 | int rbits,lbits; | |
555 | rbits = MACH_MSGH_BITS_REMOTE(msgp->msgh_bits); | |
556 | lbits = type; | |
557 | msgp->msgh_bits = | |
558 | (msgp->msgh_bits & ~MACH_MSGH_BITS_PORTS_MASK) | | |
559 | MACH_MSGH_BITS(lbits,rbits); | |
560 | } | |
561 | \f | |
562 | /* On the third day He said: | |
563 | ||
564 | Let this be global | |
565 | and then it was global. | |
566 | ||
567 | When creating the inferior fork, the | |
568 | child code in inflow.c sets the name of the | |
569 | bootstrap_port in its address space to this | |
570 | variable. | |
571 | ||
572 | The name is transferred to our address space | |
573 | with mach3_read_inferior(). | |
574 | ||
575 | Thou shalt not do this with | |
576 | task_get_bootstrap_port() in this task, since | |
577 | the name in the inferior task is different than | |
578 | the one we get. | |
579 | ||
580 | For blessed are the meek, as they shall inherit | |
581 | the address space. | |
582 | */ | |
583 | mach_port_t original_server_port_name = MACH_PORT_NULL; | |
584 | ||
585 | ||
586 | /* Called from inferior after FORK but before EXEC */ | |
843cea0d JK |
587 | static void |
588 | m3_trace_me () | |
c2d751d5 JK |
589 | { |
590 | kern_return_t ret; | |
591 | ||
592 | /* Get the NAME of the bootstrap port in this task | |
593 | so that GDB can read it */ | |
594 | ret = task_get_bootstrap_port (mach_task_self (), | |
595 | &original_server_port_name); | |
596 | if (ret != KERN_SUCCESS) | |
597 | abort (); | |
598 | ret = mach_port_deallocate (mach_task_self (), | |
599 | original_server_port_name); | |
600 | if (ret != KERN_SUCCESS) | |
601 | abort (); | |
602 | ||
603 | /* Suspend this task to let the parent change my ports. | |
604 | Resumed by the debugger */ | |
605 | ret = task_suspend (mach_task_self ()); | |
606 | if (ret != KERN_SUCCESS) | |
607 | abort (); | |
608 | } | |
609 | \f | |
610 | /* | |
611 | * Intercept system calls to Unix server. | |
612 | * After EXEC_COUNTER calls to exec(), return. | |
613 | * | |
614 | * Pre-assertion: Child is suspended. (Not verified) | |
615 | * Post-condition: Child is suspended after EXEC_COUNTER exec() calls. | |
616 | */ | |
617 | ||
618 | void | |
619 | intercept_exec_calls (exec_counter) | |
620 | int exec_counter; | |
621 | { | |
f4e0e098 JMD |
622 | int terminal_initted = 0; |
623 | ||
c2d751d5 JK |
624 | struct syscall_msg_t { |
625 | mach_msg_header_t header; | |
626 | mach_msg_type_t type; | |
627 | char room[ 2000 ]; /* Enuff space */ | |
628 | }; | |
629 | ||
630 | struct syscall_msg_t syscall_in, syscall_out; | |
631 | ||
632 | mach_port_t fake_server; | |
633 | mach_port_t original_server_send; | |
634 | mach_port_t original_exec_reply; | |
635 | mach_port_t exec_reply; | |
636 | mach_port_t exec_reply_send; | |
637 | mach_msg_type_name_t acquired; | |
638 | mach_port_t emulator_server_port_name; | |
639 | struct task_basic_info info; | |
640 | mach_msg_type_number_t info_count; | |
641 | ||
642 | kern_return_t ret; | |
643 | ||
644 | if (exec_counter <= 0) | |
645 | return; /* We are already set up in the correct program */ | |
646 | ||
647 | ret = mach_port_allocate(mach_task_self(), | |
648 | MACH_PORT_RIGHT_RECEIVE, | |
649 | &fake_server); | |
650 | CHK("create inferior_fake_server port failed", ret); | |
651 | ||
652 | /* Wait for inferior_task to suspend itself */ | |
653 | while(1) | |
654 | { | |
655 | info_count = sizeof (info); | |
656 | ret = task_info (inferior_task, | |
657 | TASK_BASIC_INFO, | |
658 | (task_info_t)&info, | |
659 | &info_count); | |
660 | CHK ("Task info", ret); | |
661 | ||
662 | if (info.suspend_count) | |
663 | break; | |
664 | ||
665 | /* Note that the definition of the parameter was undefined | |
666 | * at the time of this writing, so I just use an `ad hoc' value. | |
667 | */ | |
668 | (void) swtch_pri (42); /* Universal Priority Value */ | |
669 | } | |
670 | ||
671 | /* Read the inferior's bootstrap port name */ | |
672 | if (!mach3_read_inferior (&original_server_port_name, | |
673 | &original_server_port_name, | |
674 | sizeof (original_server_port_name))) | |
675 | error ("Can't read inferior task bootstrap port name"); | |
676 | ||
677 | /* @@ BUG: If more than 1 send right GDB will FAIL!!! */ | |
678 | /* Should get refs, and set them back when restoring */ | |
679 | /* Steal the original bsd server send right from inferior */ | |
680 | ret = mach_port_extract_right (inferior_task, | |
681 | original_server_port_name, | |
682 | MACH_MSG_TYPE_MOVE_SEND, | |
683 | &original_server_send, | |
684 | &acquired); | |
685 | CHK("mach_port_extract_right (bsd server send)",ret); | |
686 | ||
687 | if (acquired != MACH_MSG_TYPE_PORT_SEND) | |
688 | error("Incorrect right extracted, send right to bsd server excpected"); | |
689 | ||
690 | ret = mach_port_insert_right (inferior_task, | |
691 | original_server_port_name, | |
692 | fake_server, | |
693 | MACH_MSG_TYPE_MAKE_SEND); | |
694 | CHK("mach_port_insert_right (fake server send)",ret); | |
695 | ||
696 | xx_debug ("inferior task bsd server ports set up \nfs %x, ospn %x, oss %x\n", | |
697 | fake_server, | |
698 | original_server_port_name, original_server_send); | |
699 | ||
700 | /* A receive right to the reply generated by unix server exec() request */ | |
701 | ret = mach_port_allocate(mach_task_self(), | |
702 | MACH_PORT_RIGHT_RECEIVE, | |
703 | &exec_reply); | |
704 | CHK("create intercepted_reply_port port failed", ret); | |
705 | ||
706 | /* Pass this send right to Unix server so it replies to us after exec() */ | |
707 | ret = mach_port_extract_right (mach_task_self (), | |
708 | exec_reply, | |
709 | MACH_MSG_TYPE_MAKE_SEND_ONCE, | |
710 | &exec_reply_send, | |
711 | &acquired); | |
712 | CHK("mach_port_extract_right (exec_reply)",ret); | |
713 | ||
714 | if (acquired != MACH_MSG_TYPE_PORT_SEND_ONCE) | |
715 | error("Incorrect right extracted, send once excpected for exec reply"); | |
716 | ||
717 | ret = mach_port_move_member(mach_task_self(), | |
718 | fake_server, | |
719 | inferior_wait_port_set); | |
720 | CHK ("Moving fake syscall port to inferior_wait_port_set", ret); | |
721 | ||
722 | xx_debug ("syscall fake server set up, resuming inferior\n"); | |
723 | ||
724 | ret = task_resume (inferior_task); | |
725 | CHK("task_resume (startup)", ret); | |
726 | ||
727 | /* Read requests from the inferior. | |
728 | Pass directly through everything else except exec() calls. | |
729 | */ | |
730 | while(exec_counter > 0) | |
731 | { | |
732 | ret = mach_msg (&syscall_in.header, /* header */ | |
733 | MACH_RCV_MSG, /* options */ | |
734 | 0, /* send size */ | |
735 | sizeof (struct syscall_msg_t), /* receive size */ | |
736 | inferior_wait_port_set, /* receive_name */ | |
737 | MACH_MSG_TIMEOUT_NONE, | |
738 | MACH_PORT_NULL); | |
739 | CHK("mach_msg (intercepted sycall)", ret); | |
740 | ||
741 | #ifdef DUMP_SYSCALL | |
742 | print_msg (&syscall_in.header); | |
743 | #endif | |
744 | ||
745 | /* ASSERT : msgh_local_port == fake_server */ | |
746 | ||
747 | if (notify_server (&syscall_in.header, &syscall_out.header)) | |
748 | error ("received a notify while intercepting syscalls"); | |
749 | ||
750 | if (syscall_in.header.msgh_id == MIG_EXEC_SYSCALL_ID) | |
751 | { | |
752 | xx_debug ("Received EXEC SYSCALL, counter = %d\n", exec_counter); | |
753 | if (exec_counter == 1) | |
754 | { | |
755 | original_exec_reply = syscall_in.header.msgh_remote_port; | |
756 | syscall_in.header.msgh_remote_port = exec_reply_send; | |
757 | } | |
f4e0e098 JMD |
758 | |
759 | if (!terminal_initted) | |
760 | { | |
761 | /* Now that the child has exec'd we know it has already set its | |
762 | process group. On POSIX systems, tcsetpgrp will fail with | |
763 | EPERM if we try it before the child's setpgid. */ | |
764 | ||
765 | /* Set up the "saved terminal modes" of the inferior | |
766 | based on what modes we are starting it with. */ | |
767 | target_terminal_init (); | |
768 | ||
769 | /* Install inferior's terminal modes. */ | |
770 | target_terminal_inferior (); | |
771 | ||
772 | terminal_initted = 1; | |
773 | } | |
774 | ||
c2d751d5 JK |
775 | exec_counter--; |
776 | } | |
777 | ||
778 | syscall_in.header.msgh_local_port = syscall_in.header.msgh_remote_port; | |
779 | syscall_in.header.msgh_remote_port = original_server_send; | |
780 | ||
781 | reverse_msg_bits(&syscall_in.header, MACH_MSG_TYPE_COPY_SEND); | |
782 | ||
783 | ret = mach_msg_send (&syscall_in.header); | |
784 | CHK ("Forwarded syscall", ret); | |
785 | } | |
786 | ||
787 | ret = mach_port_move_member(mach_task_self(), | |
788 | fake_server, | |
789 | MACH_PORT_NULL); | |
790 | CHK ("Moving fake syscall out of inferior_wait_port_set", ret); | |
791 | ||
792 | ret = mach_port_move_member(mach_task_self(), | |
793 | exec_reply, | |
794 | inferior_wait_port_set); | |
795 | CHK ("Moving exec_reply to inferior_wait_port_set", ret); | |
796 | ||
797 | ret = mach_msg (&syscall_in.header, /* header */ | |
798 | MACH_RCV_MSG, /* options */ | |
799 | 0, /* send size */ | |
800 | sizeof (struct syscall_msg_t), /* receive size */ | |
801 | inferior_wait_port_set, /* receive_name */ | |
802 | MACH_MSG_TIMEOUT_NONE, | |
803 | MACH_PORT_NULL); | |
804 | CHK("mach_msg (exec reply)", ret); | |
805 | ||
806 | ret = task_suspend (inferior_task); | |
807 | CHK ("Suspending inferior after last exec", ret); | |
808 | ||
809 | must_suspend_thread = 0; | |
810 | ||
811 | xx_debug ("Received exec reply from bsd server, suspended inferior task\n"); | |
812 | ||
813 | #ifdef DUMP_SYSCALL | |
814 | print_msg (&syscall_in.header); | |
815 | #endif | |
816 | ||
817 | /* Message should appear as if it came from the unix server */ | |
818 | syscall_in.header.msgh_local_port = MACH_PORT_NULL; | |
819 | ||
820 | /* and go to the inferior task original reply port */ | |
821 | syscall_in.header.msgh_remote_port = original_exec_reply; | |
822 | ||
823 | reverse_msg_bits(&syscall_in.header, MACH_MSG_TYPE_MOVE_SEND_ONCE); | |
824 | ||
825 | ret = mach_msg_send (&syscall_in.header); | |
826 | CHK ("Forwarding exec reply to inferior", ret); | |
827 | ||
828 | /* Garbage collect */ | |
829 | ret = mach_port_deallocate (inferior_task, | |
830 | original_server_port_name); | |
831 | CHK ("deallocating fake server send right", ret); | |
832 | ||
833 | ret = mach_port_insert_right (inferior_task, | |
834 | original_server_port_name, | |
835 | original_server_send, | |
836 | MACH_MSG_TYPE_MOVE_SEND); | |
837 | CHK ("Restoring the original bsd server send right", ret); | |
838 | ||
839 | ret = mach_port_destroy (mach_task_self (), | |
840 | fake_server); | |
841 | fake_server = MACH_PORT_DEAD; | |
842 | CHK("mach_port_destroy (fake_server)", ret); | |
843 | ||
844 | ret = mach_port_destroy (mach_task_self (), | |
845 | exec_reply); | |
846 | exec_reply = MACH_PORT_DEAD; | |
847 | CHK("mach_port_destroy (exec_reply)", ret); | |
848 | ||
849 | xx_debug ("Done with exec call interception\n"); | |
850 | } | |
851 | ||
852 | void | |
853 | consume_send_rights (thread_list, thread_count) | |
854 | thread_array_t thread_list; | |
855 | int thread_count; | |
856 | { | |
857 | int index; | |
858 | ||
859 | if (!thread_count) | |
860 | return; | |
861 | ||
862 | for (index = 0; index < thread_count; index++) | |
863 | { | |
864 | /* Since thread kill command kills threads, don't check ret */ | |
865 | (void) mach_port_deallocate (mach_task_self (), | |
866 | thread_list [ index ]); | |
867 | } | |
868 | } | |
869 | ||
870 | /* suspend/abort/resume a thread. */ | |
871 | setup_thread (thread, what) | |
872 | mach_port_t thread; | |
873 | int what; | |
874 | { | |
875 | kern_return_t ret; | |
876 | ||
877 | if (what) | |
878 | { | |
879 | ret = thread_suspend (thread); | |
880 | CHK ("setup_thread thread_suspend", ret); | |
881 | ||
882 | ret = thread_abort (thread); | |
883 | CHK ("setup_thread thread_abort", ret); | |
884 | } | |
885 | else | |
886 | { | |
887 | ret = thread_resume (thread); | |
888 | CHK ("setup_thread thread_resume", ret); | |
889 | } | |
890 | } | |
891 | ||
892 | int | |
893 | map_slot_to_mid (slot, threads, thread_count) | |
894 | int slot; | |
895 | thread_array_t threads; | |
896 | int thread_count; | |
897 | { | |
898 | kern_return_t ret; | |
899 | int deallocate = 0; | |
900 | int index; | |
901 | int mid; | |
902 | ||
903 | if (! threads) | |
904 | { | |
905 | deallocate++; | |
906 | ret = task_threads (inferior_task, &threads, &thread_count); | |
907 | CHK ("Can not select a thread from a dead task", ret); | |
908 | } | |
909 | ||
910 | if (slot < 0 || slot >= thread_count) | |
911 | { | |
912 | if (deallocate) | |
913 | { | |
914 | consume_send_rights (threads, thread_count); | |
915 | (void) vm_deallocate (mach_task_self(), (vm_address_t)threads, | |
916 | (thread_count * sizeof(mach_port_t))); | |
917 | } | |
918 | if (slot < 0) | |
919 | error ("invalid slot number"); | |
920 | else | |
921 | return -(slot+1); | |
922 | } | |
923 | ||
924 | mid = map_port_name_to_mid (threads [slot], MACH_TYPE_THREAD); | |
925 | ||
926 | if (deallocate) | |
927 | { | |
928 | consume_send_rights (threads, thread_count); | |
929 | (void) vm_deallocate (mach_task_self(), (vm_address_t)threads, | |
930 | (thread_count * sizeof(mach_port_t))); | |
931 | } | |
932 | ||
933 | return mid; | |
934 | } | |
935 | ||
843cea0d | 936 | static int |
c2d751d5 JK |
937 | parse_thread_id (arg, thread_count, slots) |
938 | char *arg; | |
939 | int thread_count; | |
940 | int slots; | |
941 | { | |
942 | kern_return_t ret; | |
943 | int mid; | |
944 | int slot; | |
945 | int index; | |
946 | ||
947 | if (arg == 0) | |
948 | return 0; | |
949 | ||
950 | while (*arg && (*arg == ' ' || *arg == '\t')) | |
951 | arg++; | |
952 | ||
953 | if (! *arg) | |
954 | return 0; | |
955 | ||
956 | /* Currently parse MID and @SLOTNUMBER */ | |
957 | if (*arg != '@') | |
958 | { | |
959 | mid = atoi (arg); | |
960 | if (mid <= 0) | |
961 | error ("valid thread mid expected"); | |
962 | return mid; | |
963 | } | |
964 | ||
965 | arg++; | |
966 | slot = atoi (arg); | |
967 | ||
968 | if (slot < 0) | |
969 | error ("invalid slot number"); | |
970 | ||
971 | /* If you want slot numbers to remain slot numbers, set slots. | |
972 | * | |
973 | * Well, since 0 is reserved, return the ordinal number | |
974 | * of the thread rather than the slot number. Awk, this | |
975 | * counts as a kludge. | |
976 | */ | |
977 | if (slots) | |
978 | return -(slot+1); | |
979 | ||
980 | if (thread_count && slot >= thread_count) | |
981 | return -(slot+1); | |
982 | ||
983 | mid = map_slot_to_mid (slot); | |
984 | ||
985 | return mid; | |
986 | } | |
987 | ||
988 | /* THREAD_ID 0 is special; it selects the first kernel | |
989 | * thread from the list (i.e. SLOTNUMBER 0) | |
990 | * This is used when starting the program with 'run' or when attaching. | |
991 | * | |
992 | * If FLAG is 0 the context is not changed, and the registers, frame, etc | |
993 | * will continue to describe the old thread. | |
994 | * | |
995 | * If FLAG is nonzero, really select the thread. | |
996 | * If FLAG is 2, the THREAD_ID is a slotnumber instead of a mid. | |
997 | * | |
998 | */ | |
999 | kern_return_t | |
1000 | select_thread (task, thread_id, flag) | |
1001 | mach_port_t task; | |
1002 | int thread_id; | |
1003 | int flag; | |
1004 | { | |
1005 | thread_array_t thread_list; | |
1006 | int thread_count; | |
1007 | kern_return_t ret; | |
1008 | int index; | |
1009 | thread_t new_thread = MACH_PORT_NULL; | |
1010 | ||
1011 | if (thread_id < 0) | |
1012 | error ("Can't select cprocs without kernel thread"); | |
1013 | ||
1014 | ret = task_threads (task, &thread_list, &thread_count); | |
1015 | if (ret != KERN_SUCCESS) | |
1016 | { | |
5d76c8e6 | 1017 | warning ("Can not select a thread from a dead task"); |
493424b1 | 1018 | m3_kill_inferior (); |
c2d751d5 JK |
1019 | return KERN_FAILURE; |
1020 | } | |
1021 | ||
1022 | if (thread_count == 0) | |
1023 | { | |
1024 | /* The task can not do anything anymore, but it still | |
1025 | * exists as a container for memory and ports. | |
1026 | */ | |
1027 | registers_changed (); | |
5d76c8e6 | 1028 | warning ("Task %d has no threads", |
c2d751d5 JK |
1029 | map_port_name_to_mid (task, MACH_TYPE_TASK)); |
1030 | current_thread = MACH_PORT_NULL; | |
1031 | (void) vm_deallocate(mach_task_self(), | |
1032 | (vm_address_t) thread_list, | |
1033 | (thread_count * sizeof(mach_port_t))); | |
1034 | return KERN_FAILURE; | |
1035 | } | |
1036 | ||
1037 | if (! thread_id || flag == 2) | |
1038 | { | |
1039 | /* First thread or a slotnumber */ | |
1040 | if (! thread_id) | |
1041 | new_thread = thread_list[0]; | |
1042 | else | |
1043 | { | |
1044 | if (thread_id < thread_count) | |
1045 | new_thread = thread_list[ thread_id ]; | |
1046 | else | |
1047 | { | |
1048 | (void) vm_deallocate(mach_task_self(), | |
1049 | (vm_address_t) thread_list, | |
1050 | (thread_count * sizeof(mach_port_t))); | |
1051 | error ("No such thread slot number : %d", thread_id); | |
1052 | } | |
1053 | } | |
1054 | } | |
1055 | else | |
1056 | { | |
1057 | for (index = 0; index < thread_count; index++) | |
1058 | if (thread_id == map_port_name_to_mid (thread_list [index], | |
1059 | MACH_TYPE_THREAD)) | |
1060 | { | |
1061 | new_thread = thread_list [index]; | |
1062 | index = -1; | |
1063 | break; | |
1064 | } | |
1065 | ||
1066 | if (index != -1) | |
1067 | error ("No thread with mid %d", thread_id); | |
1068 | } | |
1069 | ||
1070 | /* Notify when the selected thread dies */ | |
1071 | request_notify (new_thread, MACH_NOTIFY_DEAD_NAME, MACH_TYPE_THREAD); | |
1072 | ||
1073 | ret = vm_deallocate(mach_task_self(), | |
1074 | (vm_address_t) thread_list, | |
1075 | (thread_count * sizeof(mach_port_t))); | |
1076 | CHK ("vm_deallocate", ret); | |
1077 | ||
1078 | if (! flag) | |
1079 | current_thread = new_thread; | |
1080 | else | |
1081 | { | |
1082 | #if 0 | |
1083 | if (MACH_PORT_VALID (current_thread)) | |
1084 | { | |
1085 | /* Store the gdb's view of the thread we are deselecting | |
1086 | * | |
1087 | * @@ I think gdb updates registers immediately when they are | |
1088 | * changed, so don't do this. | |
1089 | */ | |
1090 | ret = thread_abort (current_thread); | |
1091 | CHK ("Could not abort system calls when saving state of old thread", | |
1092 | ret); | |
1093 | target_prepare_to_store (); | |
1094 | target_store_registers (-1); | |
1095 | } | |
1096 | #endif | |
1097 | ||
1098 | registers_changed (); | |
1099 | ||
1100 | current_thread = new_thread; | |
1101 | ||
1102 | ret = thread_abort (current_thread); | |
1103 | CHK ("Could not abort system calls when selecting a thread", ret); | |
1104 | ||
1105 | stop_pc = read_pc(); | |
16726dd1 | 1106 | flush_cached_frames (); |
c2d751d5 JK |
1107 | |
1108 | select_frame (get_current_frame (), 0); | |
c2d751d5 JK |
1109 | } |
1110 | ||
1111 | return KERN_SUCCESS; | |
1112 | } | |
1113 | ||
1114 | /* | |
1115 | * Switch to use thread named NEW_THREAD. | |
1116 | * Return it's MID | |
1117 | */ | |
1118 | int | |
1119 | switch_to_thread (new_thread) | |
1120 | thread_t new_thread; | |
1121 | { | |
1122 | thread_t saved_thread = current_thread; | |
1123 | int mid; | |
1124 | ||
1125 | mid = map_port_name_to_mid (new_thread, | |
1126 | MACH_TYPE_THREAD); | |
1127 | if (mid == -1) | |
5d76c8e6 | 1128 | warning ("Can't map thread name 0x%x to mid", new_thread); |
c2d751d5 JK |
1129 | else if (select_thread (inferior_task, mid, 1) != KERN_SUCCESS) |
1130 | { | |
1131 | if (current_thread) | |
1132 | current_thread = saved_thread; | |
1133 | error ("Could not select thread %d", mid); | |
1134 | } | |
1135 | ||
1136 | return mid; | |
1137 | } | |
1138 | ||
1139 | /* Do this in gdb after doing FORK but before STARTUP_INFERIOR. | |
1140 | * Note that the registers are not yet valid in the inferior task. | |
1141 | */ | |
8fc2b417 | 1142 | static int |
843cea0d | 1143 | m3_trace_him (pid) |
c2d751d5 JK |
1144 | int pid; |
1145 | { | |
1146 | kern_return_t ret; | |
1147 | ||
f4e0e098 JMD |
1148 | push_target (&m3_ops); |
1149 | ||
c2d751d5 JK |
1150 | inferior_task = task_by_pid (pid); |
1151 | ||
1152 | if (! MACH_PORT_VALID (inferior_task)) | |
1153 | error ("Can not map Unix pid %d to Mach task", pid); | |
1154 | ||
1155 | /* Clean up previous notifications and create new ones */ | |
1156 | setup_notify_port (1); | |
1157 | ||
1158 | /* When notification appears, the inferior task has died */ | |
1159 | request_notify (inferior_task, MACH_NOTIFY_DEAD_NAME, MACH_TYPE_TASK); | |
1160 | ||
1161 | emulator_present = have_emulator_p (inferior_task); | |
1162 | ||
1163 | /* By default, select the first thread, | |
1164 | * If task has no threads, gives a warning | |
1165 | * Does not fetch registers, since they are not yet valid. | |
1166 | */ | |
1167 | select_thread (inferior_task, 0, 0); | |
1168 | ||
1169 | inferior_exception_port = MACH_PORT_NULL; | |
1170 | ||
1171 | setup_exception_port (); | |
1172 | ||
1173 | xx_debug ("Now the debugged task is created\n"); | |
bc28a06c JK |
1174 | |
1175 | /* One trap to exec the shell, one to exec the program being debugged. */ | |
1176 | intercept_exec_calls (2); | |
8fc2b417 SG |
1177 | |
1178 | return pid; | |
c2d751d5 JK |
1179 | } |
1180 | ||
1181 | setup_exception_port () | |
1182 | { | |
1183 | kern_return_t ret; | |
1184 | ||
1185 | ret = mach_port_allocate (mach_task_self(), | |
1186 | MACH_PORT_RIGHT_RECEIVE, | |
1187 | &inferior_exception_port); | |
1188 | CHK("mach_port_allocate",ret); | |
1189 | ||
1190 | /* add send right */ | |
1191 | ret = mach_port_insert_right (mach_task_self (), | |
1192 | inferior_exception_port, | |
1193 | inferior_exception_port, | |
1194 | MACH_MSG_TYPE_MAKE_SEND); | |
1195 | CHK("mach_port_insert_right",ret); | |
1196 | ||
1197 | ret = mach_port_move_member (mach_task_self(), | |
1198 | inferior_exception_port, | |
1199 | inferior_wait_port_set); | |
1200 | CHK("mach_port_move_member",ret); | |
1201 | ||
1202 | ret = task_get_special_port (inferior_task, | |
1203 | TASK_EXCEPTION_PORT, | |
1204 | &inferior_old_exception_port); | |
1205 | CHK ("task_get_special_port(old exc)",ret); | |
1206 | ||
1207 | ret = task_set_special_port (inferior_task, | |
1208 | TASK_EXCEPTION_PORT, | |
1209 | inferior_exception_port); | |
1210 | CHK("task_set_special_port",ret); | |
1211 | ||
1212 | ret = mach_port_deallocate (mach_task_self (), | |
1213 | inferior_exception_port); | |
1214 | CHK("mack_port_deallocate",ret); | |
1215 | ||
1216 | #if 0 | |
1217 | /* When notify appears, the inferior_task's exception | |
1218 | * port has been destroyed. | |
1219 | * | |
1220 | * Not used, since the dead_name_notification already | |
1221 | * appears when task dies. | |
1222 | * | |
1223 | */ | |
1224 | request_notify (inferior_exception_port, | |
1225 | MACH_NOTIFY_NO_SENDERS, | |
1226 | MACH_TYPE_EXCEPTION_PORT); | |
1227 | #endif | |
1228 | } | |
1229 | ||
1230 | /* Nonzero if gdb is waiting for a message */ | |
1231 | int mach_really_waiting; | |
1232 | ||
1233 | /* Wait for the inferior to stop for some reason. | |
1234 | - Loop on notifications until inferior_task dies. | |
1235 | - Loop on exceptions until stopped_in_exception comes true. | |
1236 | (e.g. we receive a single step trace trap) | |
1237 | - a message arrives to gdb's message port | |
1238 | ||
1239 | There is no other way to exit this loop. | |
1240 | ||
1241 | Returns the inferior_pid for rest of gdb. | |
67ac9759 | 1242 | Side effects: Set *OURSTATUS. */ |
c2d751d5 | 1243 | int |
f4e0e098 JMD |
1244 | mach_really_wait (pid, ourstatus) |
1245 | int pid; | |
67ac9759 | 1246 | struct target_waitstatus *ourstatus; |
c2d751d5 | 1247 | { |
c2d751d5 | 1248 | kern_return_t ret; |
67ac9759 | 1249 | int w; |
c2d751d5 JK |
1250 | |
1251 | struct msg { | |
1252 | mach_msg_header_t header; | |
1253 | mach_msg_type_t foo; | |
1254 | int data[8000]; | |
1255 | } in_msg, out_msg; | |
1256 | ||
1257 | /* Either notify (death), exception or message can stop the inferior */ | |
1258 | stopped_in_exception = FALSE; | |
1259 | ||
1260 | while (1) | |
1261 | { | |
1262 | QUIT; | |
1263 | ||
1264 | stop_exception = stop_code = stop_subcode = -1; | |
1265 | stop_thread = MACH_PORT_NULL; | |
1266 | ||
1267 | mach_really_waiting = 1; | |
1268 | ret = mach_msg (&in_msg.header, /* header */ | |
1269 | MACH_RCV_MSG, /* options */ | |
1270 | 0, /* send size */ | |
1271 | sizeof (struct msg), /* receive size */ | |
1272 | currently_waiting_for, /* receive name */ | |
1273 | MACH_MSG_TIMEOUT_NONE, | |
1274 | MACH_PORT_NULL); | |
1275 | mach_really_waiting = 0; | |
1276 | CHK("mach_msg (receive)", ret); | |
1277 | ||
1278 | /* Check if we received a notify of the childs' death */ | |
1279 | if (notify_server (&in_msg.header, &out_msg.header)) | |
1280 | { | |
1281 | /* If inferior_task is null then the inferior has | |
1282 | gone away and we want to return to command level. | |
1283 | Otherwise it was just an informative message and we | |
1284 | need to look to see if there are any more. */ | |
1285 | if (inferior_task != MACH_PORT_NULL) | |
1286 | continue; | |
1287 | else | |
1288 | { | |
1289 | /* Collect Unix exit status for gdb */ | |
1290 | ||
67ac9759 | 1291 | wait3(&w, WNOHANG, 0); |
c2d751d5 JK |
1292 | |
1293 | /* This mess is here to check that the rest of | |
1294 | * gdb knows that the inferior died. It also | |
1295 | * tries to hack around the fact that Mach 3.0 (mk69) | |
1296 | * unix server (ux28) does not always know what | |
1297 | * has happened to it's children when mach-magic | |
1298 | * is applied on them. | |
1299 | */ | |
67ac9759 JK |
1300 | if ((!WIFEXITED(w) && WIFSTOPPED(w)) || |
1301 | (WIFEXITED(w) && WEXITSTATUS(w) > 0377)) | |
c2d751d5 | 1302 | { |
67ac9759 | 1303 | WSETEXIT(w, 0); |
5d76c8e6 | 1304 | warning ("Using exit value 0 for terminated task"); |
c2d751d5 | 1305 | } |
67ac9759 | 1306 | else if (!WIFEXITED(w)) |
c2d751d5 | 1307 | { |
67ac9759 | 1308 | int sig = WTERMSIG(w); |
c2d751d5 JK |
1309 | |
1310 | /* Signals cause problems. Warn the user. */ | |
1311 | if (sig != SIGKILL) /* Bad luck if garbage matches this */ | |
5d76c8e6 | 1312 | warning ("The terminating signal stuff may be nonsense"); |
c2d751d5 JK |
1313 | else if (sig > NSIG) |
1314 | { | |
67ac9759 | 1315 | WSETEXIT(w, 0); |
5d76c8e6 | 1316 | warning ("Using exit value 0 for terminated task"); |
c2d751d5 JK |
1317 | } |
1318 | } | |
67ac9759 | 1319 | store_waitstatus (ourstatus, w); |
c2d751d5 JK |
1320 | return inferior_pid; |
1321 | } | |
1322 | } | |
1323 | ||
1324 | /* Hmm. Check for exception, as it was not a notification. | |
1325 | exc_server() does an upcall to catch_exception_raise() | |
1326 | if this rpc is an exception. Further actions are decided | |
1327 | there. | |
1328 | */ | |
1329 | if (! exc_server (&in_msg.header, &out_msg.header)) | |
1330 | { | |
1331 | ||
1332 | /* Not an exception, check for message. | |
1333 | * | |
1334 | * Messages don't come from the inferior, or if they | |
1335 | * do they better be asynchronous or it will hang. | |
1336 | */ | |
1337 | if (gdb_message_server (&in_msg.header)) | |
1338 | continue; | |
1339 | ||
1340 | error ("Unrecognized message received in mach_really_wait"); | |
1341 | } | |
1342 | ||
1343 | /* Send the reply of the exception rpc to the suspended task */ | |
1344 | ret = mach_msg_send (&out_msg.header); | |
1345 | CHK ("mach_msg_send (exc reply)", ret); | |
1346 | ||
1347 | if (stopped_in_exception) | |
1348 | { | |
1349 | /* Get unix state. May be changed in mach3_exception_actions() */ | |
67ac9759 | 1350 | wait3(&w, WNOHANG, 0); |
c2d751d5 | 1351 | |
67ac9759 | 1352 | mach3_exception_actions (&w, FALSE, "Task"); |
c2d751d5 | 1353 | |
67ac9759 | 1354 | store_waitstatus (ourstatus, w); |
c2d751d5 JK |
1355 | return inferior_pid; |
1356 | } | |
1357 | } | |
1358 | } | |
1359 | ||
1360 | /* Called by macro DO_QUIT() in utils.c(quit). | |
1361 | * This is called just before calling error() to return to command level | |
1362 | */ | |
1363 | void | |
1364 | mach3_quit () | |
1365 | { | |
1366 | int mid; | |
1367 | kern_return_t ret; | |
1368 | ||
1369 | if (mach_really_waiting) | |
1370 | { | |
1371 | ret = task_suspend (inferior_task); | |
1372 | ||
1373 | if (ret != KERN_SUCCESS) | |
1374 | { | |
5d76c8e6 | 1375 | warning ("Could not suspend task for interrupt: %s", |
c2d751d5 JK |
1376 | mach_error_string (ret)); |
1377 | mach_really_waiting = 0; | |
1378 | return; | |
1379 | } | |
1380 | } | |
1381 | ||
1382 | must_suspend_thread = 0; | |
1383 | mach_really_waiting = 0; | |
1384 | ||
1385 | mid = map_port_name_to_mid (current_thread, MACH_TYPE_THREAD); | |
1386 | if (mid == -1) | |
1387 | { | |
5d76c8e6 | 1388 | warning ("Selecting first existing kernel thread"); |
c2d751d5 JK |
1389 | mid = 0; |
1390 | } | |
1391 | ||
1392 | current_thread = MACH_PORT_NULL; /* Force setup */ | |
1393 | select_thread (inferior_task, mid, 1); | |
1394 | ||
1395 | return; | |
1396 | } | |
1397 | ||
f4e0e098 JMD |
1398 | #if 0 |
1399 | /* bogus bogus bogus. It is NOT OK to quit out of target_wait. */ | |
1400 | ||
c2d751d5 JK |
1401 | /* If ^C is typed when we are waiting for a message |
1402 | * and your Unix server is able to notice that we | |
1403 | * should quit now. | |
1404 | * | |
1405 | * Called by REQUEST_QUIT() from utils.c(request_quit) | |
1406 | */ | |
1407 | void | |
1408 | mach3_request_quit () | |
1409 | { | |
1410 | if (mach_really_waiting) | |
1411 | immediate_quit = 1; | |
1412 | } | |
f4e0e098 | 1413 | #endif |
c2d751d5 JK |
1414 | |
1415 | /* | |
1416 | * Gdb message server. | |
1417 | * Currently implemented is the STOP message, that causes | |
1418 | * gdb to return to the command level like ^C had been typed from terminal. | |
1419 | */ | |
1420 | int | |
1421 | gdb_message_server (InP) | |
1422 | mach_msg_header_t *InP; | |
1423 | { | |
1424 | kern_return_t ret; | |
1425 | int mid; | |
1426 | ||
1427 | if (InP->msgh_local_port == our_message_port) | |
1428 | { | |
1429 | /* A message coming to our_message_port. Check validity */ | |
1430 | switch (InP->msgh_id) { | |
1431 | ||
1432 | case GDB_MESSAGE_ID_STOP: | |
1433 | ret = task_suspend (inferior_task); | |
1434 | if (ret != KERN_SUCCESS) | |
5d76c8e6 | 1435 | warning ("Could not suspend task for stop message: %s", |
c2d751d5 JK |
1436 | mach_error_string (ret)); |
1437 | ||
1438 | /* QUIT in mach_really_wait() loop. */ | |
1439 | request_quit (0); | |
1440 | break; | |
1441 | ||
1442 | default: | |
5d76c8e6 | 1443 | warning ("Invalid message id %d received, ignored.", |
c2d751d5 JK |
1444 | InP->msgh_id); |
1445 | break; | |
1446 | } | |
1447 | ||
1448 | return 1; | |
1449 | } | |
1450 | ||
1451 | /* Message not handled by this server */ | |
1452 | return 0; | |
1453 | } | |
1454 | ||
1455 | /* NOTE: This is not an RPC call. It is a simpleroutine. | |
1456 | * | |
1457 | * This is not called from this gdb code. | |
1458 | * | |
1459 | * It may be called by another debugger to cause this | |
1460 | * debugger to enter command level: | |
1461 | * | |
1462 | * (gdb) set stop_inferior_gdb () | |
1463 | * (gdb) continue | |
1464 | * | |
1465 | * External program "stop-gdb" implements this also. | |
1466 | */ | |
1467 | void | |
1468 | stop_inferior_gdb () | |
1469 | { | |
1470 | kern_return_t ret; | |
1471 | ||
1472 | /* Code generated by mig, with minor cleanups :-) | |
1473 | * | |
1474 | * simpleroutine stop_inferior_gdb (our_message_port : mach_port_t); | |
1475 | */ | |
1476 | ||
1477 | typedef struct { | |
1478 | mach_msg_header_t Head; | |
1479 | } Request; | |
1480 | ||
1481 | Request Mess; | |
1482 | ||
1483 | register Request *InP = &Mess; | |
1484 | ||
1485 | InP->Head.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, 0); | |
1486 | ||
1487 | /* msgh_size passed as argument */ | |
1488 | InP->Head.msgh_remote_port = our_message_port; | |
1489 | InP->Head.msgh_local_port = MACH_PORT_NULL; | |
1490 | InP->Head.msgh_seqno = 0; | |
1491 | InP->Head.msgh_id = GDB_MESSAGE_ID_STOP; | |
1492 | ||
1493 | ret = mach_msg (&InP->Head, | |
1494 | MACH_SEND_MSG|MACH_MSG_OPTION_NONE, | |
1495 | sizeof(Request), | |
1496 | 0, | |
1497 | MACH_PORT_NULL, | |
1498 | MACH_MSG_TIMEOUT_NONE, | |
1499 | MACH_PORT_NULL); | |
1500 | } | |
1501 | ||
1502 | #ifdef THREAD_ALLOWED_TO_BREAK | |
1503 | /* | |
1504 | * Return 1 if the MID specifies the thread that caused the | |
1505 | * last exception. | |
1506 | * Since catch_exception_raise() selects the thread causing | |
1507 | * the last exception to current_thread, we just check that | |
1508 | * it is selected and the last exception was a breakpoint. | |
1509 | */ | |
1510 | int | |
1511 | mach_thread_for_breakpoint (mid) | |
1512 | int mid; | |
1513 | { | |
1514 | int cmid = map_port_name_to_mid (current_thread, MACH_TYPE_THREAD); | |
1515 | ||
1516 | if (mid < 0) | |
1517 | { | |
1518 | mid = map_slot_to_mid (-(mid+1), 0, 0); | |
1519 | if (mid < 0) | |
1520 | return 0; /* Don't stop, no such slot */ | |
1521 | } | |
1522 | ||
1523 | if (! mid || cmid == -1) | |
1524 | return 1; /* stop */ | |
1525 | ||
1526 | return cmid == mid && stop_exception == EXC_BREAKPOINT; | |
1527 | } | |
1528 | #endif /* THREAD_ALLOWED_TO_BREAK */ | |
1529 | ||
1530 | #ifdef THREAD_PARSE_ID | |
1531 | /* | |
1532 | * Map a thread id string (MID or a @SLOTNUMBER) | |
1533 | * to a thread-id. | |
1534 | * | |
1535 | * 0 matches all threads. | |
1536 | * Otherwise the meaning is defined only in this file. | |
1537 | * (mach_thread_for_breakpoint uses it) | |
1538 | * | |
1539 | * @@ This allows non-existent MIDs to be specified. | |
1540 | * It now also allows non-existent slots to be | |
1541 | * specified. (Slot numbers stored are negative, | |
1542 | * and the magnitude is one greater than the actual | |
1543 | * slot index. (Since 0 is reserved)) | |
1544 | */ | |
1545 | int | |
1546 | mach_thread_parse_id (arg) | |
1547 | char *arg; | |
1548 | { | |
1549 | int mid; | |
1550 | if (arg == 0) | |
1551 | error ("thread id excpected"); | |
1552 | mid = parse_thread_id (arg, 0, 1); | |
1553 | ||
1554 | return mid; | |
1555 | } | |
1556 | #endif /* THREAD_PARSE_ID */ | |
1557 | ||
1558 | #ifdef THREAD_OUTPUT_ID | |
1559 | char * | |
1560 | mach_thread_output_id (mid) | |
1561 | int mid; | |
1562 | { | |
1563 | static char foobar [20]; | |
1564 | ||
1565 | if (mid > 0) | |
1566 | sprintf (foobar, "mid %d", mid); | |
1567 | else if (mid < 0) | |
1568 | sprintf (foobar, "@%d", -(mid+1)); | |
1569 | else | |
1570 | sprintf (foobar, "*any thread*"); | |
1571 | ||
1572 | return foobar; | |
1573 | } | |
1574 | #endif /* THREAD_OUTPUT_ID */ | |
1575 | ||
1576 | /* Called with hook PREPARE_TO_PROCEED() from infrun.c. | |
1577 | * | |
1578 | * If we have switched threads and stopped at breakpoint return 1 otherwise 0. | |
1579 | * | |
1580 | * if SELECT_IT is nonzero, reselect the thread that was active when | |
1581 | * we stopped at a breakpoint. | |
1582 | * | |
1583 | */ | |
1584 | ||
1585 | mach3_prepare_to_proceed (select_it) | |
1586 | int select_it; | |
1587 | { | |
1588 | if (stop_thread && | |
1589 | stop_thread != current_thread && | |
1590 | stop_exception == EXC_BREAKPOINT) | |
1591 | { | |
1592 | int mid; | |
1593 | ||
1594 | if (! select_it) | |
1595 | return 1; | |
1596 | ||
1597 | mid = switch_to_thread (stop_thread); | |
1598 | ||
1599 | return 1; | |
1600 | } | |
1601 | ||
1602 | return 0; | |
1603 | } | |
1604 | ||
1605 | /* this stuff here is an upcall via libmach/excServer.c | |
1606 | and mach_really_wait which does the actual upcall. | |
1607 | ||
1608 | The code will pass the exception to the inferior if: | |
1609 | ||
1610 | - The task that signaled is not the inferior task | |
1611 | (e.g. when debugging another debugger) | |
1612 | ||
1613 | - The user has explicitely requested to pass on the exceptions. | |
1614 | (e.g to the default unix exception handler, which maps | |
1615 | exceptions to signals, or the user has her own exception handler) | |
1616 | ||
1617 | - If the thread that signaled is being single-stepped and it | |
1618 | has set it's own exception port and the exception is not | |
1619 | EXC_BREAKPOINT. (Maybe this is not desirable?) | |
1620 | */ | |
1621 | ||
1622 | kern_return_t | |
1623 | catch_exception_raise (port, thread, task, exception, code, subcode) | |
1624 | mach_port_t port; | |
1625 | thread_t thread; | |
1626 | task_t task; | |
1627 | int exception, code, subcode; | |
1628 | { | |
1629 | kern_return_t ret; | |
1630 | boolean_t signal_thread; | |
1631 | int mid = map_port_name_to_mid (thread, MACH_TYPE_THREAD); | |
1632 | ||
1633 | if (! MACH_PORT_VALID (thread)) | |
1634 | { | |
1635 | /* If the exception was sent and thread dies before we | |
1636 | receive it, THREAD will be MACH_PORT_DEAD | |
1637 | */ | |
1638 | ||
1639 | current_thread = thread = MACH_PORT_NULL; | |
1640 | error ("Received exception from nonexistent thread"); | |
1641 | } | |
1642 | ||
1643 | /* Check if the task died in transit. | |
1644 | * @@ Isn't the thread also invalid in such case? | |
1645 | */ | |
1646 | if (! MACH_PORT_VALID (task)) | |
1647 | { | |
1648 | current_thread = thread = MACH_PORT_NULL; | |
1649 | error ("Received exception from nonexistent task"); | |
1650 | } | |
1651 | ||
1652 | if (exception < 0 || exception > MAX_EXCEPTION) | |
1653 | fatal ("catch_exception_raise: unknown exception code %d thread %d", | |
1654 | exception, | |
1655 | mid); | |
1656 | ||
1657 | if (! MACH_PORT_VALID (inferior_task)) | |
1658 | error ("got an exception, but inferior_task is null or dead"); | |
1659 | ||
1660 | stop_exception = exception; | |
1661 | stop_code = code; | |
1662 | stop_subcode = subcode; | |
1663 | stop_thread = thread; | |
1664 | ||
1665 | signal_thread = exception != EXC_BREAKPOINT && | |
1666 | port == singlestepped_thread_port && | |
1667 | MACH_PORT_VALID (thread_saved_exception_port); | |
1668 | ||
1669 | /* If it was not our inferior or if we want to forward | |
1670 | * the exception to the inferior's handler, do it here | |
1671 | * | |
1672 | * Note: If you have forwarded EXC_BREAKPOINT I trust you know why. | |
1673 | */ | |
1674 | if (task != inferior_task || | |
1675 | signal_thread || | |
1676 | exception_map [exception].forward) | |
1677 | { | |
1678 | mach_port_t eport = inferior_old_exception_port; | |
1679 | ||
1680 | if (signal_thread) | |
1681 | { | |
1682 | /* | |
1683 | GDB now forwards the exeption to thread's original handler, | |
1684 | since the user propably knows what he is doing. | |
1685 | Give a message, though. | |
1686 | */ | |
1687 | ||
1688 | mach3_exception_actions ((WAITTYPE *)NULL, TRUE, "Thread"); | |
1689 | eport = thread_saved_exception_port; | |
1690 | } | |
1691 | ||
1692 | /* Send the exception to the original handler */ | |
1693 | ret = exception_raise (eport, | |
1694 | thread, | |
1695 | task, | |
1696 | exception, | |
1697 | code, | |
1698 | subcode); | |
1699 | ||
1700 | (void) mach_port_deallocate (mach_task_self (), task); | |
1701 | (void) mach_port_deallocate (mach_task_self (), thread); | |
1702 | ||
1703 | /* If we come here, we don't want to trace any more, since we | |
1704 | * will never stop for tracing anyway. | |
1705 | */ | |
1706 | discard_single_step (thread); | |
1707 | ||
1708 | /* Do not stop the inferior */ | |
1709 | return ret; | |
1710 | } | |
1711 | ||
1712 | /* Now gdb handles the exception */ | |
1713 | stopped_in_exception = TRUE; | |
1714 | ||
1715 | ret = task_suspend (task); | |
1716 | CHK ("Error suspending inferior after exception", ret); | |
1717 | ||
1718 | must_suspend_thread = 0; | |
1719 | ||
1720 | if (current_thread != thread) | |
1721 | { | |
1722 | if (MACH_PORT_VALID (singlestepped_thread_port)) | |
1723 | /* Cleanup discards single stepping */ | |
1724 | error ("Exception from thread %d while singlestepping thread %d", | |
1725 | mid, | |
1726 | map_port_name_to_mid (current_thread, MACH_TYPE_THREAD)); | |
1727 | ||
1728 | /* Then select the thread that caused the exception */ | |
1729 | if (select_thread (inferior_task, mid, 0) != KERN_SUCCESS) | |
1730 | error ("Could not select thread %d causing exception", mid); | |
1731 | else | |
5d76c8e6 | 1732 | warning ("Gdb selected thread %d", mid); |
c2d751d5 JK |
1733 | } |
1734 | ||
1735 | /* If we receive an exception that is not breakpoint | |
1736 | * exception, we interrupt the single step and return to | |
1737 | * debugger. Trace condition is cleared. | |
1738 | */ | |
1739 | if (MACH_PORT_VALID (singlestepped_thread_port)) | |
1740 | { | |
1741 | if (stop_exception != EXC_BREAKPOINT) | |
5d76c8e6 | 1742 | warning ("Single step interrupted by exception"); |
c2d751d5 JK |
1743 | else if (port == singlestepped_thread_port) |
1744 | { | |
1745 | /* Single step exception occurred, remove trace bit | |
1746 | * and return to gdb. | |
1747 | */ | |
1748 | if (! MACH_PORT_VALID (current_thread)) | |
1749 | error ("Single stepped thread is not valid"); | |
1750 | ||
1751 | /* Resume threads, but leave the task suspended */ | |
1752 | resume_all_threads (0); | |
1753 | } | |
1754 | else | |
5d76c8e6 | 1755 | warning ("Breakpoint while single stepping?"); |
c2d751d5 JK |
1756 | |
1757 | discard_single_step (current_thread); | |
1758 | } | |
1759 | ||
1760 | (void) mach_port_deallocate (mach_task_self (), task); | |
1761 | (void) mach_port_deallocate (mach_task_self (), thread); | |
1762 | ||
1763 | return KERN_SUCCESS; | |
1764 | } | |
1765 | \f | |
1766 | int | |
1767 | port_valid (port, mask) | |
1768 | mach_port_t port; | |
1769 | int mask; | |
1770 | { | |
1771 | kern_return_t ret; | |
1772 | mach_port_type_t type; | |
1773 | ||
1774 | ret = mach_port_type (mach_task_self (), | |
1775 | port, | |
1776 | &type); | |
1777 | if (ret != KERN_SUCCESS || (type & mask) != mask) | |
1778 | return 0; | |
1779 | return 1; | |
1780 | } | |
1781 | \f | |
1782 | /* @@ No vm read cache implemented yet */ | |
1783 | boolean_t vm_read_cache_valid = FALSE; | |
1784 | ||
1785 | /* | |
1786 | * Read inferior task's LEN bytes from ADDR and copy it to MYADDR | |
1787 | * in gdb's address space. | |
1788 | * | |
1789 | * Return 0 on failure; number of bytes read otherwise. | |
1790 | */ | |
1791 | int | |
1792 | mach3_read_inferior (addr, myaddr, length) | |
1793 | CORE_ADDR addr; | |
1794 | char *myaddr; | |
1795 | int length; | |
1796 | { | |
1797 | kern_return_t ret; | |
1798 | vm_address_t low_address = (vm_address_t) trunc_page (addr); | |
1799 | vm_size_t aligned_length = | |
1800 | (vm_size_t) round_page (addr+length) - low_address; | |
1801 | pointer_t copied_memory; | |
1802 | int copy_count; | |
1803 | ||
1804 | /* Get memory from inferior with page aligned addresses */ | |
1805 | ret = vm_read (inferior_task, | |
1806 | low_address, | |
1807 | aligned_length, | |
1808 | &copied_memory, | |
1809 | ©_count); | |
1810 | if (ret != KERN_SUCCESS) | |
1811 | { | |
1812 | /* the problem is that the inferior might be killed for whatever reason | |
1813 | * before we go to mach_really_wait. This is one place that ought to | |
1814 | * catch many of those errors. | |
1815 | * @@ A better fix would be to make all external events to GDB | |
1816 | * to arrive via a SINGLE port set. (Including user input!) | |
1817 | */ | |
1818 | ||
1819 | if (! port_valid (inferior_task, MACH_PORT_TYPE_SEND)) | |
1820 | { | |
493424b1 | 1821 | m3_kill_inferior (); |
c2d751d5 JK |
1822 | error ("Inferior killed (task port invalid)"); |
1823 | } | |
1824 | else | |
1825 | { | |
1826 | #ifdef OSF | |
1827 | extern int errno; | |
1828 | /* valprint.c gives nicer format if this does not | |
1829 | screw it. Eamonn seems to like this, so I enable | |
1830 | it if OSF is defined... | |
1831 | */ | |
5d76c8e6 | 1832 | warning ("[read inferior %x failed: %s]", |
c2d751d5 JK |
1833 | addr, mach_error_string (ret)); |
1834 | errno = 0; | |
1835 | #endif | |
1836 | return 0; | |
1837 | } | |
1838 | } | |
1839 | ||
a6e0dae9 | 1840 | memcpy (myaddr, (char *)addr - low_address + copied_memory, length); |
c2d751d5 JK |
1841 | |
1842 | ret = vm_deallocate (mach_task_self (), | |
1843 | copied_memory, | |
1844 | copy_count); | |
1845 | CHK("mach3_read_inferior vm_deallocate failed", ret); | |
1846 | ||
1847 | return length; | |
1848 | } | |
1849 | ||
1850 | #ifdef __STDC__ | |
1851 | #define CHK_GOTO_OUT(str,ret) \ | |
1852 | do if (ret != KERN_SUCCESS) { errstr = #str; goto out; } while(0) | |
1853 | #else | |
1854 | #define CHK_GOTO_OUT(str,ret) \ | |
1855 | do if (ret != KERN_SUCCESS) { errstr = str; goto out; } while(0) | |
1856 | #endif | |
1857 | ||
1858 | struct vm_region_list { | |
1859 | struct vm_region_list *next; | |
1860 | vm_prot_t protection; | |
1861 | vm_address_t start; | |
1862 | vm_size_t length; | |
1863 | }; | |
1864 | ||
1865 | struct obstack region_obstack; | |
1866 | ||
1867 | /* | |
1868 | * Write inferior task's LEN bytes from ADDR and copy it to MYADDR | |
1869 | * in gdb's address space. | |
1870 | */ | |
1871 | int | |
1872 | mach3_write_inferior (addr, myaddr, length) | |
1873 | CORE_ADDR addr; | |
1874 | char *myaddr; | |
1875 | int length; | |
1876 | { | |
1877 | kern_return_t ret; | |
1878 | vm_address_t low_address = (vm_address_t) trunc_page (addr); | |
1879 | vm_size_t aligned_length = | |
1880 | (vm_size_t) round_page (addr+length) - low_address; | |
1881 | pointer_t copied_memory; | |
1882 | int copy_count; | |
1883 | int deallocate = 0; | |
1884 | ||
1885 | char *errstr = "Bug in mach3_write_inferior"; | |
1886 | ||
1887 | struct vm_region_list *region_element; | |
1888 | struct vm_region_list *region_head = (struct vm_region_list *)NULL; | |
1889 | ||
1890 | /* Get memory from inferior with page aligned addresses */ | |
1891 | ret = vm_read (inferior_task, | |
1892 | low_address, | |
1893 | aligned_length, | |
1894 | &copied_memory, | |
1895 | ©_count); | |
1896 | CHK_GOTO_OUT ("mach3_write_inferior vm_read failed", ret); | |
1897 | ||
1898 | deallocate++; | |
1899 | ||
a6e0dae9 | 1900 | memcpy ((char *)addr - low_address + copied_memory, myaddr, length); |
c2d751d5 JK |
1901 | |
1902 | obstack_init (®ion_obstack); | |
1903 | ||
1904 | /* Do writes atomically. | |
1905 | * First check for holes and unwritable memory. | |
1906 | */ | |
1907 | { | |
1908 | vm_size_t remaining_length = aligned_length; | |
1909 | vm_address_t region_address = low_address; | |
1910 | ||
1911 | struct vm_region_list *scan; | |
1912 | ||
1913 | while(region_address < low_address + aligned_length) | |
1914 | { | |
1915 | vm_prot_t protection; | |
1916 | vm_prot_t max_protection; | |
1917 | vm_inherit_t inheritance; | |
1918 | boolean_t shared; | |
1919 | mach_port_t object_name; | |
1920 | vm_offset_t offset; | |
1921 | vm_size_t region_length = remaining_length; | |
1922 | vm_address_t old_address = region_address; | |
1923 | ||
1924 | ret = vm_region (inferior_task, | |
1925 | ®ion_address, | |
1926 | ®ion_length, | |
1927 | &protection, | |
1928 | &max_protection, | |
1929 | &inheritance, | |
1930 | &shared, | |
1931 | &object_name, | |
1932 | &offset); | |
1933 | CHK_GOTO_OUT ("vm_region failed", ret); | |
1934 | ||
1935 | /* Check for holes in memory */ | |
1936 | if (old_address != region_address) | |
1937 | { | |
5d76c8e6 | 1938 | warning ("No memory at 0x%x. Nothing written", |
c2d751d5 JK |
1939 | old_address); |
1940 | ret = KERN_SUCCESS; | |
1941 | length = 0; | |
1942 | goto out; | |
1943 | } | |
1944 | ||
1945 | if (!(max_protection & VM_PROT_WRITE)) | |
1946 | { | |
5d76c8e6 | 1947 | warning ("Memory at address 0x%x is unwritable. Nothing written", |
c2d751d5 JK |
1948 | old_address); |
1949 | ret = KERN_SUCCESS; | |
1950 | length = 0; | |
1951 | goto out; | |
1952 | } | |
1953 | ||
1954 | /* Chain the regions for later use */ | |
1955 | region_element = | |
1956 | (struct vm_region_list *) | |
1957 | obstack_alloc (®ion_obstack, sizeof (struct vm_region_list)); | |
1958 | ||
1959 | region_element->protection = protection; | |
1960 | region_element->start = region_address; | |
1961 | region_element->length = region_length; | |
1962 | ||
1963 | /* Chain the regions along with protections */ | |
1964 | region_element->next = region_head; | |
1965 | region_head = region_element; | |
1966 | ||
1967 | region_address += region_length; | |
1968 | remaining_length = remaining_length - region_length; | |
1969 | } | |
1970 | ||
1971 | /* If things fail after this, we give up. | |
1972 | * Somebody is messing up inferior_task's mappings. | |
1973 | */ | |
1974 | ||
1975 | /* Enable writes to the chained vm regions */ | |
1976 | for (scan = region_head; scan; scan = scan->next) | |
1977 | { | |
1978 | boolean_t protection_changed = FALSE; | |
1979 | ||
1980 | if (!(scan->protection & VM_PROT_WRITE)) | |
1981 | { | |
1982 | ret = vm_protect (inferior_task, | |
1983 | scan->start, | |
1984 | scan->length, | |
1985 | FALSE, | |
1986 | scan->protection | VM_PROT_WRITE); | |
1987 | CHK_GOTO_OUT ("vm_protect: enable write failed", ret); | |
1988 | } | |
1989 | } | |
1990 | ||
1991 | ret = vm_write (inferior_task, | |
1992 | low_address, | |
1993 | copied_memory, | |
1994 | aligned_length); | |
1995 | CHK_GOTO_OUT ("vm_write failed", ret); | |
1996 | ||
1997 | /* Set up the original region protections, if they were changed */ | |
1998 | for (scan = region_head; scan; scan = scan->next) | |
1999 | { | |
2000 | boolean_t protection_changed = FALSE; | |
2001 | ||
2002 | if (!(scan->protection & VM_PROT_WRITE)) | |
2003 | { | |
2004 | ret = vm_protect (inferior_task, | |
2005 | scan->start, | |
2006 | scan->length, | |
2007 | FALSE, | |
2008 | scan->protection); | |
2009 | CHK_GOTO_OUT ("vm_protect: enable write failed", ret); | |
2010 | } | |
2011 | } | |
2012 | } | |
2013 | ||
2014 | out: | |
2015 | if (deallocate) | |
2016 | { | |
2017 | obstack_free (®ion_obstack, 0); | |
2018 | ||
2019 | (void) vm_deallocate (mach_task_self (), | |
2020 | copied_memory, | |
2021 | copy_count); | |
2022 | } | |
2023 | ||
2024 | if (ret != KERN_SUCCESS) | |
2025 | { | |
5d76c8e6 | 2026 | warning ("%s %s", errstr, mach_error_string (ret)); |
c2d751d5 JK |
2027 | return 0; |
2028 | } | |
2029 | ||
2030 | return length; | |
2031 | } | |
2032 | ||
843cea0d JK |
2033 | /* Return 0 on failure, number of bytes handled otherwise. */ |
2034 | static int | |
2035 | m3_xfer_memory (memaddr, myaddr, len, write, target) | |
c2d751d5 JK |
2036 | CORE_ADDR memaddr; |
2037 | char *myaddr; | |
2038 | int len; | |
2039 | int write; | |
2040 | struct target_ops *target; /* IGNORED */ | |
2041 | { | |
2042 | int result; | |
2043 | ||
2044 | if (write) | |
2045 | result = mach3_write_inferior (memaddr, myaddr, len); | |
2046 | else | |
2047 | result = mach3_read_inferior (memaddr, myaddr, len); | |
2048 | ||
2049 | return result; | |
2050 | } | |
2051 | ||
2052 | \f | |
843cea0d | 2053 | static char * |
c2d751d5 JK |
2054 | translate_state(state) |
2055 | int state; | |
2056 | { | |
2057 | switch (state) { | |
2058 | case TH_STATE_RUNNING: return("R"); | |
2059 | case TH_STATE_STOPPED: return("S"); | |
2060 | case TH_STATE_WAITING: return("W"); | |
2061 | case TH_STATE_UNINTERRUPTIBLE: return("U"); | |
2062 | case TH_STATE_HALTED: return("H"); | |
2063 | default: return("?"); | |
2064 | } | |
2065 | } | |
2066 | ||
843cea0d | 2067 | static char * |
5d76c8e6 JK |
2068 | translate_cstate (state) |
2069 | int state; | |
c2d751d5 | 2070 | { |
5d76c8e6 JK |
2071 | switch (state) |
2072 | { | |
2073 | case CPROC_RUNNING: return "R"; | |
2074 | case CPROC_SWITCHING: return "S"; | |
2075 | case CPROC_BLOCKED: return "B"; | |
2076 | case CPROC_CONDWAIT: return "C"; | |
2077 | case CPROC_CONDWAIT|CPROC_SWITCHING: return "CS"; | |
2078 | default: return "?"; | |
2079 | } | |
c2d751d5 JK |
2080 | } |
2081 | ||
5d76c8e6 | 2082 | /* type == MACH_MSG_TYPE_COPY_SEND || type == MACH_MSG_TYPE_MAKE_SEND */ |
c2d751d5 JK |
2083 | |
2084 | mach_port_t /* no mach_port_name_t found in include files. */ | |
2085 | map_inferior_port_name (inferior_name, type) | |
2086 | mach_port_t inferior_name; | |
2087 | mach_msg_type_name_t type; | |
2088 | { | |
2089 | kern_return_t ret; | |
2090 | mach_msg_type_name_t acquired; | |
2091 | mach_port_t iport; | |
2092 | ||
2093 | ret = mach_port_extract_right (inferior_task, | |
2094 | inferior_name, | |
2095 | type, | |
2096 | &iport, | |
2097 | &acquired); | |
2098 | CHK("mach_port_extract_right (map_inferior_port_name)", ret); | |
2099 | ||
2100 | if (acquired != MACH_MSG_TYPE_PORT_SEND) | |
2101 | error("Incorrect right extracted, (map_inferior_port_name)"); | |
2102 | ||
2103 | ret = mach_port_deallocate (mach_task_self (), | |
2104 | iport); | |
2105 | CHK ("Deallocating mapped port (map_inferior_port_name)", ret); | |
2106 | ||
2107 | return iport; | |
2108 | } | |
2109 | ||
2110 | /* | |
2111 | * Naming convention: | |
2112 | * Always return user defined name if found. | |
2113 | * _K == A kernel thread with no matching CPROC | |
2114 | * _C == A cproc with no current cthread | |
2115 | * _t == A cthread with no user defined name | |
2116 | * | |
2117 | * The digits that follow the _names are the SLOT number of the | |
2118 | * kernel thread if there is such a thing, otherwise just a negation | |
2119 | * of the sequential number of such cprocs. | |
2120 | */ | |
2121 | ||
843cea0d | 2122 | static char buf[7]; |
c2d751d5 | 2123 | |
843cea0d | 2124 | static char * |
c2d751d5 | 2125 | get_thread_name (one_cproc, id) |
5d76c8e6 | 2126 | gdb_thread_t one_cproc; |
c2d751d5 JK |
2127 | int id; |
2128 | { | |
2129 | if (one_cproc) | |
5d76c8e6 | 2130 | if (one_cproc->cthread == NULL) |
c2d751d5 JK |
2131 | { |
2132 | /* cproc not mapped to any cthread */ | |
2133 | sprintf(buf, "_C%d", id); | |
2134 | } | |
5d76c8e6 | 2135 | else if (! one_cproc->cthread->name) |
c2d751d5 JK |
2136 | { |
2137 | /* cproc and cthread, but no name */ | |
2138 | sprintf(buf, "_t%d", id); | |
2139 | } | |
2140 | else | |
f4e0e098 | 2141 | return (char *)(one_cproc->cthread->name); |
c2d751d5 JK |
2142 | else |
2143 | { | |
2144 | if (id < 0) | |
5d76c8e6 | 2145 | warning ("Inconsistency in thread name id %d", id); |
c2d751d5 JK |
2146 | |
2147 | /* Kernel thread without cproc */ | |
2148 | sprintf(buf, "_K%d", id); | |
2149 | } | |
2150 | ||
2151 | return buf; | |
2152 | } | |
2153 | ||
2154 | int | |
2155 | fetch_thread_info (task, mthreads_out) | |
2156 | mach_port_t task; | |
2157 | gdb_thread_t *mthreads_out; /* out */ | |
2158 | { | |
2159 | kern_return_t ret; | |
2160 | thread_array_t th_table; | |
2161 | int th_count; | |
2162 | gdb_thread_t mthreads = NULL; | |
2163 | int index; | |
2164 | ||
2165 | ret = task_threads (task, &th_table, &th_count); | |
2166 | if (ret != KERN_SUCCESS) | |
2167 | { | |
5d76c8e6 | 2168 | warning ("Error getting inferior's thread list:%s", |
c2d751d5 | 2169 | mach_error_string(ret)); |
493424b1 | 2170 | m3_kill_inferior (); |
c2d751d5 JK |
2171 | return -1; |
2172 | } | |
2173 | ||
2174 | mthreads = (gdb_thread_t) | |
2175 | obstack_alloc | |
2176 | (cproc_obstack, | |
2177 | th_count * sizeof (struct gdb_thread)); | |
2178 | ||
2179 | for (index = 0; index < th_count; index++) | |
2180 | { | |
2181 | thread_t saved_thread = MACH_PORT_NULL; | |
2182 | int mid; | |
2183 | ||
2184 | if (must_suspend_thread) | |
2185 | setup_thread (th_table[ index ], 1); | |
2186 | ||
2187 | if (th_table[index] != current_thread) | |
2188 | { | |
2189 | saved_thread = current_thread; | |
2190 | ||
2191 | mid = switch_to_thread (th_table[ index ]); | |
2192 | } | |
2193 | ||
2194 | mthreads[index].name = th_table[index]; | |
2195 | mthreads[index].cproc = NULL; /* map_cprocs_to_kernel_threads() */ | |
2196 | mthreads[index].in_emulator = FALSE; | |
2197 | mthreads[index].slotid = index; | |
2198 | ||
2199 | mthreads[index].sp = read_register (SP_REGNUM); | |
2200 | mthreads[index].fp = read_register (FP_REGNUM); | |
2201 | mthreads[index].pc = read_pc (); | |
2202 | ||
2203 | if (MACH_PORT_VALID (saved_thread)) | |
2204 | mid = switch_to_thread (saved_thread); | |
2205 | ||
2206 | if (must_suspend_thread) | |
2207 | setup_thread (th_table[ index ], 0); | |
2208 | } | |
2209 | ||
2210 | consume_send_rights (th_table, th_count); | |
2211 | ret = vm_deallocate (mach_task_self(), (vm_address_t)th_table, | |
2212 | (th_count * sizeof(mach_port_t))); | |
2213 | if (ret != KERN_SUCCESS) | |
2214 | { | |
5d76c8e6 | 2215 | warning ("Error trying to deallocate thread list : %s", |
c2d751d5 JK |
2216 | mach_error_string (ret)); |
2217 | } | |
2218 | ||
2219 | *mthreads_out = mthreads; | |
2220 | ||
2221 | return th_count; | |
2222 | } | |
2223 | ||
2224 | ||
2225 | /* | |
2226 | * Current emulator always saves the USP on top of | |
2227 | * emulator stack below struct emul_stack_top stuff. | |
2228 | */ | |
2229 | CORE_ADDR | |
2230 | fetch_usp_from_emulator_stack (sp) | |
2231 | CORE_ADDR sp; | |
2232 | { | |
2233 | CORE_ADDR stack_pointer; | |
2234 | ||
2235 | sp = (sp & ~(EMULATOR_STACK_SIZE-1)) + | |
2236 | EMULATOR_STACK_SIZE - sizeof (struct emul_stack_top); | |
2237 | ||
2238 | if (mach3_read_inferior (sp, | |
2239 | &stack_pointer, | |
2240 | sizeof (CORE_ADDR)) != sizeof (CORE_ADDR)) | |
2241 | { | |
5d76c8e6 | 2242 | warning ("Can't read user sp from emulator stack address 0x%x", sp); |
c2d751d5 JK |
2243 | return 0; |
2244 | } | |
2245 | ||
2246 | return stack_pointer; | |
2247 | } | |
2248 | ||
2249 | #ifdef MK67 | |
2250 | ||
2251 | /* get_emulation_vector() interface was changed after mk67 */ | |
2252 | #define EMUL_VECTOR_COUNT 400 /* Value does not matter too much */ | |
2253 | ||
2254 | #endif /* MK67 */ | |
2255 | ||
2256 | /* Check if the emulator exists at task's address space. | |
2257 | */ | |
2258 | boolean_t | |
2259 | have_emulator_p (task) | |
2260 | task_t task; | |
2261 | { | |
2262 | kern_return_t ret; | |
2263 | #ifndef EMUL_VECTOR_COUNT | |
2264 | vm_offset_t *emulation_vector; | |
2265 | int n; | |
2266 | #else | |
2267 | vm_offset_t emulation_vector[ EMUL_VECTOR_COUNT ]; | |
2268 | int n = EMUL_VECTOR_COUNT; | |
2269 | #endif | |
2270 | int i; | |
2271 | int vector_start; | |
2272 | ||
2273 | ret = task_get_emulation_vector (task, | |
2274 | &vector_start, | |
2275 | #ifndef EMUL_VECTOR_COUNT | |
2276 | &emulation_vector, | |
2277 | #else | |
2278 | emulation_vector, | |
2279 | #endif | |
2280 | &n); | |
2281 | CHK("task_get_emulation_vector", ret); | |
2282 | xx_debug ("%d vectors from %d at 0x%08x\n", | |
2283 | n, vector_start, emulation_vector); | |
2284 | ||
2285 | for(i = 0; i < n; i++) | |
2286 | { | |
2287 | vm_offset_t entry = emulation_vector [i]; | |
2288 | ||
2289 | if (EMULATOR_BASE <= entry && entry <= EMULATOR_END) | |
2290 | return TRUE; | |
2291 | else if (entry) | |
2292 | { | |
2293 | static boolean_t informed = FALSE; | |
2294 | if (!informed) | |
2295 | { | |
5d76c8e6 | 2296 | warning("Emulation vector address 0x08%x outside emulator space", |
c2d751d5 JK |
2297 | entry); |
2298 | informed = TRUE; | |
2299 | } | |
2300 | } | |
2301 | } | |
2302 | return FALSE; | |
2303 | } | |
2304 | ||
5d76c8e6 | 2305 | /* Map cprocs to kernel threads and vice versa. */ |
c2d751d5 JK |
2306 | |
2307 | void | |
2308 | map_cprocs_to_kernel_threads (cprocs, mthreads, thread_count) | |
5d76c8e6 JK |
2309 | gdb_thread_t cprocs; |
2310 | gdb_thread_t mthreads; | |
c2d751d5 JK |
2311 | int thread_count; |
2312 | { | |
2313 | int index; | |
5d76c8e6 JK |
2314 | gdb_thread_t scan; |
2315 | boolean_t all_mapped = TRUE; | |
493424b1 JK |
2316 | LONGEST stack_base; |
2317 | LONGEST stack_size; | |
c2d751d5 | 2318 | |
5d76c8e6 | 2319 | for (scan = cprocs; scan; scan = scan->next) |
c2d751d5 JK |
2320 | { |
2321 | /* Default to: no kernel thread for this cproc */ | |
5d76c8e6 | 2322 | scan->reverse_map = -1; |
c2d751d5 JK |
2323 | |
2324 | /* Check if the cproc is found by its stack */ | |
2325 | for (index = 0; index < thread_count; index++) | |
2326 | { | |
493424b1 JK |
2327 | stack_base = |
2328 | extract_signed_integer (scan->raw_cproc + CPROC_BASE_OFFSET, | |
5d76c8e6 | 2329 | CPROC_BASE_SIZE); |
493424b1 JK |
2330 | stack_size = |
2331 | extract_signed_integer (scan->raw_cproc + CPROC_SIZE_OFFSET, | |
5d76c8e6 JK |
2332 | CPROC_SIZE_SIZE); |
2333 | if ((mthreads + index)->sp > stack_base && | |
2334 | (mthreads + index)->sp <= stack_base + stack_size) | |
c2d751d5 JK |
2335 | { |
2336 | (mthreads + index)->cproc = scan; | |
5d76c8e6 | 2337 | scan->reverse_map = index; |
c2d751d5 JK |
2338 | break; |
2339 | } | |
2340 | } | |
5d76c8e6 | 2341 | all_mapped &= (scan->reverse_map != -1); |
c2d751d5 JK |
2342 | } |
2343 | ||
2344 | /* Check for threads that are currently in the emulator. | |
2345 | * If so, they have a different stack, and the still unmapped | |
2346 | * cprocs may well get mapped to these threads. | |
2347 | * | |
2348 | * If: | |
2349 | * - cproc stack does not match any kernel thread stack pointer | |
2350 | * - there is at least one extra kernel thread | |
2351 | * that has no cproc mapped above. | |
2352 | * - some kernel thread stack pointer points to emulator space | |
2353 | * then we find the user stack pointer saved in the emulator | |
2354 | * stack, and try to map that to the cprocs. | |
2355 | * | |
2356 | * Also set in_emulator for kernel threads. | |
2357 | */ | |
2358 | ||
2359 | if (emulator_present) | |
2360 | { | |
2361 | for (index = 0; index < thread_count; index++) | |
2362 | { | |
2363 | CORE_ADDR emul_sp; | |
2364 | CORE_ADDR usp; | |
2365 | ||
2366 | gdb_thread_t mthread = (mthreads+index); | |
2367 | emul_sp = mthread->sp; | |
2368 | ||
5d76c8e6 | 2369 | if (mthread->cproc == NULL && |
c2d751d5 JK |
2370 | EMULATOR_BASE <= emul_sp && emul_sp <= EMULATOR_END) |
2371 | { | |
2372 | mthread->in_emulator = emulator_present; | |
2373 | ||
2374 | if (!all_mapped && cprocs) | |
2375 | { | |
2376 | usp = fetch_usp_from_emulator_stack (emul_sp); | |
2377 | ||
2378 | /* @@ Could be more accurate */ | |
2379 | if (! usp) | |
2380 | error ("Zero stack pointer read from emulator?"); | |
2381 | ||
2382 | /* Try to match this stack pointer to the cprocs that | |
2383 | * don't yet have a kernel thread. | |
2384 | */ | |
5d76c8e6 | 2385 | for (scan = cprocs; scan; scan = scan->next) |
c2d751d5 JK |
2386 | { |
2387 | ||
2388 | /* Check is this unmapped CPROC stack contains | |
2389 | * the user stack pointer saved in the | |
2390 | * emulator. | |
2391 | */ | |
493424b1 | 2392 | if (scan->reverse_map == -1) |
c2d751d5 | 2393 | { |
493424b1 JK |
2394 | stack_base = |
2395 | extract_signed_integer | |
2396 | (scan->raw_cproc + CPROC_BASE_OFFSET, | |
2397 | CPROC_BASE_SIZE); | |
2398 | stack_size = | |
2399 | extract_signed_integer | |
2400 | (scan->raw_cproc + CPROC_SIZE_OFFSET, | |
2401 | CPROC_SIZE_SIZE); | |
2402 | if (usp > stack_base && | |
2403 | usp <= stack_base + stack_size) | |
2404 | { | |
2405 | mthread->cproc = scan; | |
2406 | scan->reverse_map = index; | |
2407 | break; | |
2408 | } | |
c2d751d5 JK |
2409 | } |
2410 | } | |
2411 | } | |
2412 | } | |
2413 | } | |
2414 | } | |
2415 | } | |
2416 | \f | |
2417 | /* | |
2418 | * Format of the thread_list command | |
2419 | * | |
2420 | * slot mid sel name emul ks susp cstate wired address | |
2421 | */ | |
2422 | #define TL_FORMAT "%-2.2s %5d%c %-10.10s %1.1s%s%-5.5s %-2.2s %-5.5s " | |
2423 | ||
2424 | #define TL_HEADER "\n@ MID Name KState CState Where\n" | |
2425 | ||
2426 | void | |
2427 | print_tl_address (stream, pc) | |
199b2450 | 2428 | GDB_FILE *stream; |
c2d751d5 JK |
2429 | CORE_ADDR pc; |
2430 | { | |
2431 | if (! lookup_minimal_symbol_by_pc (pc)) | |
2432 | fprintf_filtered (stream, local_hex_format(), pc); | |
2433 | else | |
2434 | { | |
2435 | extern int addressprint; | |
2436 | extern int asm_demangle; | |
2437 | ||
2438 | int store = addressprint; | |
2439 | addressprint = 0; | |
2440 | print_address_symbolic (pc, stream, asm_demangle, ""); | |
2441 | addressprint = store; | |
2442 | } | |
2443 | } | |
2444 | \f | |
2445 | /* For thread names, but also for gdb_message_port external name */ | |
2446 | #define MAX_NAME_LEN 50 | |
2447 | ||
2448 | /* Returns the address of variable NAME or 0 if not found */ | |
2449 | CORE_ADDR | |
2450 | lookup_address_of_variable (name) | |
2451 | char *name; | |
2452 | { | |
2453 | struct symbol *sym; | |
2454 | CORE_ADDR symaddr = 0; | |
2455 | struct minimal_symbol *msymbol; | |
2456 | ||
2457 | sym = lookup_symbol (name, | |
2458 | (struct block *)NULL, | |
2459 | VAR_NAMESPACE, | |
2460 | (int *)NULL, | |
2461 | (struct symtab **)NULL); | |
2462 | ||
2463 | if (sym) | |
2464 | symaddr = SYMBOL_VALUE (sym); | |
2465 | ||
2466 | if (! symaddr) | |
2467 | { | |
2d336b1b | 2468 | msymbol = lookup_minimal_symbol (name, NULL, NULL); |
c2d751d5 JK |
2469 | |
2470 | if (msymbol && msymbol->type == mst_data) | |
493424b1 | 2471 | symaddr = SYMBOL_VALUE_ADDRESS (msymbol); |
c2d751d5 JK |
2472 | } |
2473 | ||
2474 | return symaddr; | |
2475 | } | |
2476 | ||
5d76c8e6 | 2477 | static gdb_thread_t |
c2d751d5 JK |
2478 | get_cprocs() |
2479 | { | |
5d76c8e6 JK |
2480 | gdb_thread_t cproc_head; |
2481 | gdb_thread_t cproc_copy; | |
2482 | CORE_ADDR their_cprocs; | |
2483 | char *buf[TARGET_PTR_BIT / HOST_CHAR_BIT]; | |
c2d751d5 JK |
2484 | char *name; |
2485 | cthread_t cthread; | |
2486 | CORE_ADDR symaddr; | |
2487 | ||
2488 | symaddr = lookup_address_of_variable ("cproc_list"); | |
2489 | ||
2490 | if (! symaddr) | |
5d76c8e6 JK |
2491 | { |
2492 | /* cproc_list is not in a file compiled with debugging | |
c2d751d5 | 2493 | symbols, but don't give up yet */ |
5d76c8e6 | 2494 | |
c2d751d5 JK |
2495 | symaddr = lookup_address_of_variable ("cprocs"); |
2496 | ||
2497 | if (symaddr) | |
2498 | { | |
2499 | static int informed = 0; | |
5d76c8e6 JK |
2500 | if (!informed) |
2501 | { | |
2502 | informed++; | |
2503 | warning ("Your program is loaded with an old threads library."); | |
2504 | warning ("GDB does not know the old form of threads"); | |
2505 | warning ("so things may not work."); | |
2506 | } | |
c2d751d5 JK |
2507 | } |
2508 | } | |
2509 | ||
2510 | /* Stripped or no -lthreads loaded or "cproc_list" is in wrong segment. */ | |
2511 | if (! symaddr) | |
5d76c8e6 | 2512 | return NULL; |
c2d751d5 JK |
2513 | |
2514 | /* Get the address of the first cproc in the task */ | |
5d76c8e6 JK |
2515 | if (!mach3_read_inferior (symaddr, |
2516 | buf, | |
2517 | TARGET_PTR_BIT / HOST_CHAR_BIT)) | |
2518 | error ("Can't read cproc master list at address (0x%x).", symaddr); | |
2519 | their_cprocs = extract_address (buf, TARGET_PTR_BIT / HOST_CHAR_BIT); | |
c2d751d5 JK |
2520 | |
2521 | /* Scan the CPROCs in the task. | |
2522 | CPROCs are chained with LIST field, not NEXT field, which | |
2523 | chains mutexes, condition variables and queues */ | |
c2d751d5 | 2524 | |
5d76c8e6 JK |
2525 | cproc_head = NULL; |
2526 | ||
2527 | while (their_cprocs != (CORE_ADDR)0) | |
c2d751d5 | 2528 | { |
5d76c8e6 JK |
2529 | CORE_ADDR cproc_copy_incarnation; |
2530 | cproc_copy = (gdb_thread_t) obstack_alloc (cproc_obstack, | |
2531 | sizeof (struct gdb_thread)); | |
2532 | ||
2533 | if (!mach3_read_inferior (their_cprocs, | |
493424b1 | 2534 | &cproc_copy->raw_cproc[0], |
5d76c8e6 | 2535 | CPROC_SIZE)) |
c2d751d5 | 2536 | error("Can't read next cproc at 0x%x.", their_cprocs); |
5d76c8e6 JK |
2537 | |
2538 | their_cprocs = | |
493424b1 | 2539 | extract_address (cproc_copy->raw_cproc + CPROC_LIST_OFFSET, |
5d76c8e6 JK |
2540 | CPROC_LIST_SIZE); |
2541 | cproc_copy_incarnation = | |
493424b1 | 2542 | extract_address (cproc_copy->raw_cproc + CPROC_INCARNATION_OFFSET, |
5d76c8e6 JK |
2543 | CPROC_INCARNATION_SIZE); |
2544 | ||
2545 | if (cproc_copy_incarnation == (CORE_ADDR)0) | |
2546 | cproc_copy->cthread = NULL; | |
2547 | else | |
c2d751d5 JK |
2548 | { |
2549 | /* This CPROC has an attached CTHREAD. Get its name */ | |
2550 | cthread = (cthread_t)obstack_alloc (cproc_obstack, | |
2551 | sizeof(struct cthread)); | |
5d76c8e6 JK |
2552 | |
2553 | if (!mach3_read_inferior (cproc_copy_incarnation, | |
c2d751d5 JK |
2554 | cthread, |
2555 | sizeof(struct cthread))) | |
2556 | error("Can't read next thread at 0x%x.", | |
5d76c8e6 JK |
2557 | cproc_copy_incarnation); |
2558 | ||
2559 | cproc_copy->cthread = cthread; | |
2560 | ||
c2d751d5 JK |
2561 | if (cthread->name) |
2562 | { | |
2563 | name = (char *) obstack_alloc (cproc_obstack, MAX_NAME_LEN); | |
2564 | ||
2565 | if (!mach3_read_inferior(cthread->name, name, MAX_NAME_LEN)) | |
2566 | error("Can't read next thread's name at 0x%x.", cthread->name); | |
2567 | ||
2568 | cthread->name = name; | |
2569 | } | |
2570 | } | |
5d76c8e6 | 2571 | |
c2d751d5 | 2572 | /* insert in front */ |
5d76c8e6 JK |
2573 | cproc_copy->next = cproc_head; |
2574 | cproc_head = cproc_copy; | |
c2d751d5 | 2575 | } |
5d76c8e6 | 2576 | return cproc_head; |
c2d751d5 JK |
2577 | } |
2578 | ||
2579 | #ifndef FETCH_CPROC_STATE | |
2580 | /* | |
2581 | * Check if your machine does not grok the way this routine | |
2582 | * fetches the FP,PC and SP of a cproc that is not | |
2583 | * currently attached to any kernel thread (e.g. its cproc.context | |
2584 | * field points to the place in stack where the context | |
2585 | * is saved). | |
2586 | * | |
2587 | * If it doesn't, define your own routine. | |
2588 | */ | |
2589 | #define FETCH_CPROC_STATE(mth) mach3_cproc_state (mth) | |
2590 | ||
2591 | int | |
2592 | mach3_cproc_state (mthread) | |
2593 | gdb_thread_t mthread; | |
2594 | { | |
2595 | int context; | |
2596 | ||
493424b1 | 2597 | if (! mthread || !mthread->cproc) |
c2d751d5 JK |
2598 | return -1; |
2599 | ||
5d76c8e6 JK |
2600 | context = extract_signed_integer |
2601 | (mthread->cproc->raw_cproc + CPROC_CONTEXT_OFFSET, | |
2602 | CPROC_CONTEXT_SIZE); | |
493424b1 JK |
2603 | if (context == 0) |
2604 | return -1; | |
c2d751d5 JK |
2605 | |
2606 | mthread->sp = context + MACHINE_CPROC_SP_OFFSET; | |
2607 | ||
2608 | if (mach3_read_inferior (context + MACHINE_CPROC_PC_OFFSET, | |
2609 | &mthread->pc, | |
2610 | sizeof (CORE_ADDR)) != sizeof (CORE_ADDR)) | |
2611 | { | |
5d76c8e6 | 2612 | warning ("Can't read cproc pc from inferior"); |
c2d751d5 JK |
2613 | return -1; |
2614 | } | |
2615 | ||
2616 | if (mach3_read_inferior (context + MACHINE_CPROC_FP_OFFSET, | |
2617 | &mthread->fp, | |
2618 | sizeof (CORE_ADDR)) != sizeof (CORE_ADDR)) | |
2619 | { | |
5d76c8e6 | 2620 | warning ("Can't read cproc fp from inferior"); |
c2d751d5 JK |
2621 | return -1; |
2622 | } | |
2623 | ||
2624 | return 0; | |
2625 | } | |
2626 | #endif /* FETCH_CPROC_STATE */ | |
2627 | ||
2628 | \f | |
2629 | void | |
2630 | thread_list_command() | |
2631 | { | |
2632 | thread_basic_info_data_t ths; | |
2633 | int thread_count; | |
5d76c8e6 JK |
2634 | gdb_thread_t cprocs; |
2635 | gdb_thread_t scan; | |
c2d751d5 JK |
2636 | int index; |
2637 | char *name; | |
2638 | char selected; | |
2639 | char *wired; | |
2640 | int infoCnt; | |
2641 | kern_return_t ret; | |
2642 | mach_port_t mid_or_port; | |
2643 | gdb_thread_t their_threads; | |
2644 | gdb_thread_t kthread; | |
2645 | ||
2646 | int neworder = 1; | |
2647 | ||
2648 | char *fmt = "There are %d kernel threads in task %d.\n"; | |
2649 | ||
2650 | int tmid = map_port_name_to_mid (inferior_task, MACH_TYPE_TASK); | |
2651 | ||
2652 | MACH_ERROR_NO_INFERIOR; | |
2653 | ||
2654 | thread_count = fetch_thread_info (inferior_task, | |
2655 | &their_threads); | |
2656 | if (thread_count == -1) | |
2657 | return; | |
2658 | ||
2659 | if (thread_count == 1) | |
2660 | fmt = "There is %d kernel thread in task %d.\n"; | |
2661 | ||
2662 | printf_filtered (fmt, thread_count, tmid); | |
2663 | ||
2664 | puts_filtered (TL_HEADER); | |
2665 | ||
2666 | cprocs = get_cprocs(); | |
2667 | ||
2668 | map_cprocs_to_kernel_threads (cprocs, their_threads, thread_count); | |
2669 | ||
5d76c8e6 | 2670 | for (scan = cprocs; scan; scan = scan->next) |
c2d751d5 JK |
2671 | { |
2672 | int mid; | |
2673 | char buf[10]; | |
2674 | char slot[3]; | |
493424b1 JK |
2675 | int cproc_state = |
2676 | extract_signed_integer | |
2677 | (scan->raw_cproc + CPROC_STATE_OFFSET, CPROC_STATE_SIZE); | |
c2d751d5 JK |
2678 | |
2679 | selected = ' '; | |
2680 | ||
2681 | /* a wired cproc? */ | |
5d76c8e6 JK |
2682 | wired = (extract_address (scan->raw_cproc + CPROC_WIRED_OFFSET, |
2683 | CPROC_WIRED_SIZE) | |
2684 | ? "wired" : ""); | |
2685 | ||
2686 | if (scan->reverse_map != -1) | |
2687 | kthread = (their_threads + scan->reverse_map); | |
c2d751d5 JK |
2688 | else |
2689 | kthread = NULL; | |
2690 | ||
2691 | if (kthread) | |
2692 | { | |
2693 | /* These cprocs have a kernel thread */ | |
2694 | ||
2695 | mid = map_port_name_to_mid (kthread->name, MACH_TYPE_THREAD); | |
2696 | ||
2697 | infoCnt = THREAD_BASIC_INFO_COUNT; | |
2698 | ||
2699 | ret = thread_info (kthread->name, | |
2700 | THREAD_BASIC_INFO, | |
2701 | (thread_info_t)&ths, | |
2702 | &infoCnt); | |
2703 | ||
2704 | if (ret != KERN_SUCCESS) | |
2705 | { | |
5d76c8e6 | 2706 | warning ("Unable to get basic info on thread %d : %s", |
c2d751d5 JK |
2707 | mid, |
2708 | mach_error_string (ret)); | |
2709 | continue; | |
2710 | } | |
2711 | ||
2712 | /* Who is the first to have more than 100 threads */ | |
2713 | sprintf (slot, "%d", kthread->slotid%100); | |
2714 | ||
2715 | if (kthread->name == current_thread) | |
2716 | selected = '*'; | |
2717 | ||
2718 | if (ths.suspend_count) | |
2719 | sprintf (buf, "%d", ths.suspend_count); | |
2720 | else | |
2721 | buf[0] = '\000'; | |
2722 | ||
2723 | #if 0 | |
2724 | if (ths.flags & TH_FLAGS_SWAPPED) | |
2725 | strcat (buf, "S"); | |
2726 | #endif | |
2727 | ||
2728 | if (ths.flags & TH_FLAGS_IDLE) | |
2729 | strcat (buf, "I"); | |
2730 | ||
2731 | printf_filtered (TL_FORMAT, | |
2732 | slot, | |
2733 | mid, | |
2734 | selected, | |
2735 | get_thread_name (scan, kthread->slotid), | |
2736 | kthread->in_emulator ? "E" : "", | |
2737 | translate_state (ths.run_state), | |
2738 | buf, | |
493424b1 | 2739 | translate_cstate (cproc_state), |
c2d751d5 | 2740 | wired); |
199b2450 | 2741 | print_tl_address (gdb_stdout, kthread->pc); |
c2d751d5 JK |
2742 | } |
2743 | else | |
2744 | { | |
2745 | /* These cprocs don't have a kernel thread. | |
2746 | * find out the calling frame with | |
2747 | * FETCH_CPROC_STATE. | |
2748 | */ | |
2749 | ||
2750 | struct gdb_thread state; | |
2751 | ||
2752 | #if 0 | |
2753 | /* jtv -> emcmanus: why do you want this here? */ | |
2754 | if (scan->incarnation == NULL) | |
2755 | continue; /* EMcM */ | |
2756 | #endif | |
2757 | ||
2758 | printf_filtered (TL_FORMAT, | |
2759 | "-", | |
2760 | -neworder, /* Pseudo MID */ | |
2761 | selected, | |
2762 | get_thread_name (scan, -neworder), | |
2763 | "", | |
2764 | "-", /* kernel state */ | |
2765 | "", | |
493424b1 | 2766 | translate_cstate (cproc_state), |
c2d751d5 JK |
2767 | ""); |
2768 | state.cproc = scan; | |
2769 | ||
2770 | if (FETCH_CPROC_STATE (&state) == -1) | |
2771 | puts_filtered ("???"); | |
2772 | else | |
199b2450 | 2773 | print_tl_address (gdb_stdout, state.pc); |
c2d751d5 JK |
2774 | |
2775 | neworder++; | |
2776 | } | |
2777 | puts_filtered ("\n"); | |
2778 | } | |
2779 | ||
2780 | /* Scan for kernel threads without cprocs */ | |
2781 | for (index = 0; index < thread_count; index++) | |
2782 | { | |
2783 | if (! their_threads[index].cproc) | |
2784 | { | |
2785 | int mid; | |
2786 | ||
2787 | char buf[10]; | |
2788 | char slot[3]; | |
2789 | ||
2790 | mach_port_t name = their_threads[index].name; | |
2791 | ||
2792 | mid = map_port_name_to_mid (name, MACH_TYPE_THREAD); | |
2793 | ||
2794 | infoCnt = THREAD_BASIC_INFO_COUNT; | |
2795 | ||
2796 | ret = thread_info(name, | |
2797 | THREAD_BASIC_INFO, | |
2798 | (thread_info_t)&ths, | |
2799 | &infoCnt); | |
2800 | ||
2801 | if (ret != KERN_SUCCESS) | |
2802 | { | |
5d76c8e6 | 2803 | warning ("Unable to get basic info on thread %d : %s", |
c2d751d5 JK |
2804 | mid, |
2805 | mach_error_string (ret)); | |
2806 | continue; | |
2807 | } | |
2808 | ||
2809 | sprintf (slot, "%d", index%100); | |
2810 | ||
2811 | if (name == current_thread) | |
2812 | selected = '*'; | |
2813 | else | |
2814 | selected = ' '; | |
2815 | ||
2816 | if (ths.suspend_count) | |
2817 | sprintf (buf, "%d", ths.suspend_count); | |
2818 | else | |
2819 | buf[0] = '\000'; | |
2820 | ||
2821 | #if 0 | |
2822 | if (ths.flags & TH_FLAGS_SWAPPED) | |
2823 | strcat (buf, "S"); | |
2824 | #endif | |
2825 | ||
2826 | if (ths.flags & TH_FLAGS_IDLE) | |
2827 | strcat (buf, "I"); | |
2828 | ||
2829 | printf_filtered (TL_FORMAT, | |
2830 | slot, | |
2831 | mid, | |
2832 | selected, | |
2833 | get_thread_name (NULL, index), | |
2834 | their_threads[index].in_emulator ? "E" : "", | |
2835 | translate_state (ths.run_state), | |
2836 | buf, | |
2837 | "", /* No cproc state */ | |
2838 | ""); /* Can't be wired */ | |
199b2450 | 2839 | print_tl_address (gdb_stdout, their_threads[index].pc); |
c2d751d5 JK |
2840 | puts_filtered ("\n"); |
2841 | } | |
2842 | } | |
2843 | ||
2844 | obstack_free (cproc_obstack, 0); | |
2845 | obstack_init (cproc_obstack); | |
2846 | } | |
2847 | \f | |
2848 | void | |
2849 | thread_select_command(args, from_tty) | |
2850 | char *args; | |
2851 | int from_tty; | |
2852 | { | |
2853 | int mid; | |
2854 | thread_array_t thread_list; | |
2855 | int thread_count; | |
2856 | kern_return_t ret; | |
2857 | int is_slot = 0; | |
2858 | ||
2859 | MACH_ERROR_NO_INFERIOR; | |
2860 | ||
2861 | if (!args) | |
2862 | error_no_arg ("MID or @SLOTNUMBER to specify a thread to select"); | |
2863 | ||
2864 | while (*args == ' ' || *args == '\t') | |
2865 | args++; | |
2866 | ||
2867 | if (*args == '@') | |
2868 | { | |
2869 | is_slot++; | |
2870 | args++; | |
2871 | } | |
2872 | ||
2873 | mid = atoi(args); | |
2874 | ||
2875 | if (mid == 0) | |
2876 | if (!is_slot || *args != '0') /* Rudimentary checks */ | |
2877 | error ("You must select threads by MID or @SLOTNUMBER"); | |
2878 | ||
2879 | if (select_thread (inferior_task, mid, is_slot?2:1) != KERN_SUCCESS) | |
2880 | return; | |
2881 | ||
2882 | if (from_tty) | |
2883 | printf_filtered ("Thread %d selected\n", | |
2884 | is_slot ? map_port_name_to_mid (current_thread, | |
2885 | MACH_TYPE_THREAD) : mid); | |
2886 | } | |
2887 | \f | |
2888 | thread_trace (thread, set) | |
2889 | mach_port_t thread; | |
2890 | boolean_t set; | |
2891 | { | |
2892 | int flavor = TRACE_FLAVOR; | |
2893 | unsigned int stateCnt = TRACE_FLAVOR_SIZE; | |
2894 | kern_return_t ret; | |
2895 | thread_state_data_t state; | |
2896 | ||
2897 | if (! MACH_PORT_VALID (thread)) | |
2898 | { | |
5d76c8e6 | 2899 | warning ("thread_trace: invalid thread"); |
c2d751d5 JK |
2900 | return; |
2901 | } | |
2902 | ||
2903 | if (must_suspend_thread) | |
2904 | setup_thread (thread, 1); | |
2905 | ||
2906 | ret = thread_get_state(thread, flavor, state, &stateCnt); | |
2907 | CHK ("thread_trace: error reading thread state", ret); | |
2908 | ||
2909 | if (set) | |
2910 | { | |
2911 | TRACE_SET (thread, state); | |
2912 | } | |
2913 | else | |
2914 | { | |
2915 | if (! TRACE_CLEAR (thread, state)) | |
2916 | { | |
2917 | if (must_suspend_thread) | |
2918 | setup_thread (thread, 0); | |
2919 | return; | |
2920 | } | |
2921 | } | |
2922 | ||
2923 | ret = thread_set_state(thread, flavor, state, stateCnt); | |
2924 | CHK ("thread_trace: error writing thread state", ret); | |
2925 | if (must_suspend_thread) | |
2926 | setup_thread (thread, 0); | |
2927 | } | |
2928 | ||
2929 | #ifdef FLUSH_INFERIOR_CACHE | |
2930 | ||
2931 | /* When over-writing code on some machines the I-Cache must be flushed | |
2932 | explicitly, because it is not kept coherent by the lazy hardware. | |
2933 | This definitely includes breakpoints, for instance, or else we | |
2934 | end up looping in mysterious Bpt traps */ | |
2935 | ||
2936 | flush_inferior_icache(pc, amount) | |
2937 | CORE_ADDR pc; | |
2938 | { | |
2939 | vm_machine_attribute_val_t flush = MATTR_VAL_ICACHE_FLUSH; | |
2940 | kern_return_t ret; | |
2941 | ||
2942 | ret = vm_machine_attribute (inferior_task, | |
2943 | pc, | |
2944 | amount, | |
2945 | MATTR_CACHE, | |
2946 | &flush); | |
2947 | if (ret != KERN_SUCCESS) | |
5d76c8e6 | 2948 | warning ("Error flushing inferior's cache : %s", |
c2d751d5 JK |
2949 | mach_error_string (ret)); |
2950 | } | |
2951 | #endif FLUSH_INFERIOR_CACHE | |
2952 | ||
2953 | \f | |
843cea0d | 2954 | static |
c2d751d5 JK |
2955 | suspend_all_threads (from_tty) |
2956 | int from_tty; | |
2957 | { | |
2958 | kern_return_t ret; | |
2959 | thread_array_t thread_list; | |
2960 | int thread_count, index; | |
2961 | int infoCnt; | |
2962 | thread_basic_info_data_t th_info; | |
2963 | ||
2964 | ||
2965 | ret = task_threads (inferior_task, &thread_list, &thread_count); | |
2966 | if (ret != KERN_SUCCESS) | |
2967 | { | |
5d76c8e6 | 2968 | warning ("Could not suspend inferior threads."); |
493424b1 | 2969 | m3_kill_inferior (); |
f4e0e098 | 2970 | return_to_top_level (RETURN_ERROR); |
c2d751d5 JK |
2971 | } |
2972 | ||
2973 | for (index = 0; index < thread_count; index++) | |
2974 | { | |
2975 | int mid; | |
2976 | ||
2977 | mid = map_port_name_to_mid (thread_list[ index ], | |
2978 | MACH_TYPE_THREAD); | |
2979 | ||
2980 | ret = thread_suspend(thread_list[ index ]); | |
2981 | ||
2982 | if (ret != KERN_SUCCESS) | |
5d76c8e6 | 2983 | warning ("Error trying to suspend thread %d : %s", |
c2d751d5 JK |
2984 | mid, mach_error_string (ret)); |
2985 | ||
2986 | if (from_tty) | |
2987 | { | |
2988 | infoCnt = THREAD_BASIC_INFO_COUNT; | |
2989 | ret = thread_info (thread_list[ index ], | |
2990 | THREAD_BASIC_INFO, | |
2991 | (thread_info_t) &th_info, | |
2992 | &infoCnt); | |
2993 | CHK ("suspend can't get thread info", ret); | |
2994 | ||
5d76c8e6 | 2995 | warning ("Thread %d suspend count is %d", |
c2d751d5 JK |
2996 | mid, th_info.suspend_count); |
2997 | } | |
2998 | } | |
2999 | ||
3000 | consume_send_rights (thread_list, thread_count); | |
3001 | ret = vm_deallocate(mach_task_self(), | |
3002 | (vm_address_t)thread_list, | |
3003 | (thread_count * sizeof(int))); | |
3004 | CHK ("Error trying to deallocate thread list", ret); | |
3005 | } | |
3006 | ||
3007 | void | |
3008 | thread_suspend_command (args, from_tty) | |
3009 | char *args; | |
3010 | int from_tty; | |
3011 | { | |
3012 | kern_return_t ret; | |
3013 | int mid; | |
3014 | mach_port_t saved_thread; | |
3015 | int infoCnt; | |
3016 | thread_basic_info_data_t th_info; | |
3017 | ||
3018 | MACH_ERROR_NO_INFERIOR; | |
3019 | ||
3020 | if (!strcasecmp (args, "all")) { | |
3021 | suspend_all_threads (from_tty); | |
3022 | return; | |
3023 | } | |
3024 | ||
3025 | saved_thread = current_thread; | |
3026 | ||
3027 | mid = parse_thread_id (args, 0, 0); | |
3028 | ||
3029 | if (mid < 0) | |
3030 | error ("You can suspend only existing kernel threads with MID or @SLOTNUMBER"); | |
3031 | ||
3032 | if (mid == 0) | |
3033 | mid = map_port_name_to_mid (current_thread, MACH_TYPE_THREAD); | |
3034 | else | |
3035 | if (select_thread (inferior_task, mid, 0) != KERN_SUCCESS) | |
3036 | { | |
3037 | if (current_thread) | |
3038 | current_thread = saved_thread; | |
3039 | error ("Could not select thread %d", mid); | |
3040 | } | |
3041 | ||
3042 | ret = thread_suspend (current_thread); | |
3043 | if (ret != KERN_SUCCESS) | |
5d76c8e6 | 3044 | warning ("thread_suspend failed : %s", |
c2d751d5 JK |
3045 | mach_error_string (ret)); |
3046 | ||
3047 | infoCnt = THREAD_BASIC_INFO_COUNT; | |
3048 | ret = thread_info (current_thread, | |
3049 | THREAD_BASIC_INFO, | |
3050 | (thread_info_t) &th_info, | |
3051 | &infoCnt); | |
3052 | CHK ("suspend can't get thread info", ret); | |
3053 | ||
5d76c8e6 | 3054 | warning ("Thread %d suspend count is %d", mid, th_info.suspend_count); |
c2d751d5 JK |
3055 | |
3056 | current_thread = saved_thread; | |
3057 | } | |
3058 | ||
3059 | resume_all_threads (from_tty) | |
3060 | int from_tty; | |
3061 | { | |
3062 | kern_return_t ret; | |
3063 | thread_array_t thread_list; | |
3064 | int thread_count, index; | |
3065 | int mid; | |
3066 | int infoCnt; | |
3067 | thread_basic_info_data_t th_info; | |
3068 | ||
3069 | ret = task_threads (inferior_task, &thread_list, &thread_count); | |
3070 | if (ret != KERN_SUCCESS) | |
3071 | { | |
493424b1 | 3072 | m3_kill_inferior (); |
c2d751d5 JK |
3073 | error("task_threads", mach_error_string( ret)); |
3074 | } | |
3075 | ||
3076 | for (index = 0; index < thread_count; index++) | |
3077 | { | |
3078 | infoCnt = THREAD_BASIC_INFO_COUNT; | |
3079 | ret = thread_info (thread_list [ index ], | |
3080 | THREAD_BASIC_INFO, | |
3081 | (thread_info_t) &th_info, | |
3082 | &infoCnt); | |
3083 | CHK ("resume_all can't get thread info", ret); | |
3084 | ||
3085 | mid = map_port_name_to_mid (thread_list[ index ], | |
3086 | MACH_TYPE_THREAD); | |
3087 | ||
3088 | if (! th_info.suspend_count) | |
3089 | { | |
3090 | if (mid != -1 && from_tty) | |
5d76c8e6 | 3091 | warning ("Thread %d is not suspended", mid); |
c2d751d5 JK |
3092 | continue; |
3093 | } | |
3094 | ||
3095 | ret = thread_resume (thread_list[ index ]); | |
3096 | ||
3097 | if (ret != KERN_SUCCESS) | |
5d76c8e6 | 3098 | warning ("Error trying to resume thread %d : %s", |
c2d751d5 JK |
3099 | mid, mach_error_string (ret)); |
3100 | else if (mid != -1 && from_tty) | |
5d76c8e6 | 3101 | warning ("Thread %d suspend count is %d", |
c2d751d5 JK |
3102 | mid, --th_info.suspend_count); |
3103 | } | |
3104 | ||
3105 | consume_send_rights (thread_list, thread_count); | |
3106 | ret = vm_deallocate(mach_task_self(), | |
3107 | (vm_address_t)thread_list, | |
3108 | (thread_count * sizeof(int))); | |
3109 | CHK("Error trying to deallocate thread list", ret); | |
3110 | } | |
3111 | ||
3112 | void | |
3113 | thread_resume_command (args, from_tty) | |
3114 | char *args; | |
3115 | int from_tty; | |
3116 | { | |
3117 | int mid; | |
3118 | mach_port_t saved_thread; | |
3119 | kern_return_t ret; | |
3120 | thread_basic_info_data_t th_info; | |
3121 | int infoCnt = THREAD_BASIC_INFO_COUNT; | |
3122 | ||
3123 | MACH_ERROR_NO_INFERIOR; | |
3124 | ||
3125 | if (!strcasecmp (args, "all")) { | |
3126 | resume_all_threads (from_tty); | |
3127 | return; | |
3128 | } | |
3129 | ||
3130 | saved_thread = current_thread; | |
3131 | ||
3132 | mid = parse_thread_id (args, 0, 0); | |
3133 | ||
3134 | if (mid < 0) | |
3135 | error ("You can resume only existing kernel threads with MID or @SLOTNUMBER"); | |
3136 | ||
3137 | if (mid == 0) | |
3138 | mid = map_port_name_to_mid (current_thread, MACH_TYPE_THREAD); | |
3139 | else | |
3140 | if (select_thread (inferior_task, mid, 0) != KERN_SUCCESS) | |
3141 | { | |
3142 | if (current_thread) | |
3143 | current_thread = saved_thread; | |
f4e0e098 | 3144 | return_to_top_level (RETURN_ERROR); |
c2d751d5 JK |
3145 | } |
3146 | ||
3147 | ret = thread_info (current_thread, | |
3148 | THREAD_BASIC_INFO, | |
3149 | (thread_info_t) &th_info, | |
3150 | &infoCnt); | |
3151 | CHK ("resume can't get thread info", ret); | |
3152 | ||
3153 | if (! th_info.suspend_count) | |
3154 | { | |
5d76c8e6 | 3155 | warning ("Thread %d is not suspended", mid); |
c2d751d5 JK |
3156 | goto out; |
3157 | } | |
3158 | ||
3159 | ret = thread_resume (current_thread); | |
3160 | if (ret != KERN_SUCCESS) | |
5d76c8e6 | 3161 | warning ("thread_resume failed : %s", |
c2d751d5 JK |
3162 | mach_error_string (ret)); |
3163 | else | |
3164 | { | |
3165 | th_info.suspend_count--; | |
5d76c8e6 | 3166 | warning ("Thread %d suspend count is %d", mid, th_info.suspend_count); |
c2d751d5 JK |
3167 | } |
3168 | ||
3169 | out: | |
3170 | current_thread = saved_thread; | |
3171 | } | |
3172 | ||
3173 | void | |
3174 | thread_kill_command (args, from_tty) | |
3175 | char *args; | |
3176 | int from_tty; | |
3177 | { | |
3178 | int mid; | |
3179 | kern_return_t ret; | |
3180 | int thread_count; | |
3181 | thread_array_t thread_table; | |
3182 | int index; | |
3183 | mach_port_t thread_to_kill = MACH_PORT_NULL; | |
3184 | ||
3185 | ||
3186 | MACH_ERROR_NO_INFERIOR; | |
3187 | ||
3188 | if (!args) | |
3189 | error_no_arg ("thread mid to kill from the inferior task"); | |
3190 | ||
3191 | mid = parse_thread_id (args, 0, 0); | |
3192 | ||
3193 | if (mid < 0) | |
3194 | error ("You can kill only existing kernel threads with MID or @SLOTNUMBER"); | |
3195 | ||
3196 | if (mid) | |
3197 | { | |
3198 | ret = machid_mach_port (mid_server, mid_auth, mid, &thread_to_kill); | |
3199 | CHK ("thread_kill_command: machid_mach_port map failed", ret); | |
3200 | } | |
3201 | else | |
3202 | mid = map_port_name_to_mid (current_thread, MACH_TYPE_THREAD); | |
3203 | ||
3204 | /* Don't allow gdb to kill *any* thread in the system. Use mkill program for that */ | |
3205 | ret = task_threads (inferior_task, &thread_table, &thread_count); | |
3206 | CHK ("Error getting inferior's thread list", ret); | |
3207 | ||
3208 | if (thread_to_kill == current_thread) | |
3209 | { | |
3210 | ret = thread_terminate (thread_to_kill); | |
3211 | CHK ("Thread could not be terminated", ret); | |
3212 | ||
3213 | if (select_thread (inferior_task, 0, 1) != KERN_SUCCESS) | |
5d76c8e6 | 3214 | warning ("Last thread was killed, use \"kill\" command to kill task"); |
c2d751d5 JK |
3215 | } |
3216 | else | |
3217 | for (index = 0; index < thread_count; index++) | |
3218 | if (thread_table [ index ] == thread_to_kill) | |
3219 | { | |
3220 | ret = thread_terminate (thread_to_kill); | |
3221 | CHK ("Thread could not be terminated", ret); | |
3222 | } | |
3223 | ||
3224 | if (thread_count > 1) | |
3225 | consume_send_rights (thread_table, thread_count); | |
3226 | ||
3227 | ret = vm_deallocate (mach_task_self(), (vm_address_t)thread_table, | |
3228 | (thread_count * sizeof(mach_port_t))); | |
3229 | CHK ("Error trying to deallocate thread list", ret); | |
3230 | ||
5d76c8e6 | 3231 | warning ("Thread %d killed", mid); |
c2d751d5 JK |
3232 | } |
3233 | ||
3234 | \f | |
3235 | /* Task specific commands; add more if you like */ | |
3236 | ||
3237 | void | |
3238 | task_resume_command (args, from_tty) | |
3239 | char *args; | |
3240 | int from_tty; | |
3241 | { | |
3242 | kern_return_t ret; | |
3243 | task_basic_info_data_t ta_info; | |
3244 | int infoCnt = TASK_BASIC_INFO_COUNT; | |
3245 | int mid = map_port_name_to_mid (inferior_task, MACH_TYPE_TASK); | |
3246 | ||
3247 | MACH_ERROR_NO_INFERIOR; | |
3248 | ||
3249 | /* Would be trivial to change, but is it desirable? */ | |
3250 | if (args) | |
3251 | error ("Currently gdb can resume only it's inferior task"); | |
3252 | ||
3253 | ret = task_info (inferior_task, | |
3254 | TASK_BASIC_INFO, | |
3255 | (task_info_t) &ta_info, | |
3256 | &infoCnt); | |
3257 | CHK ("task_resume_command: task_info failed", ret); | |
3258 | ||
3259 | if (ta_info.suspend_count == 0) | |
3260 | error ("Inferior task %d is not suspended", mid); | |
3261 | else if (ta_info.suspend_count == 1 && | |
3262 | from_tty && | |
3263 | !query ("Suspend count is now 1. Do you know what you are doing? ")) | |
3264 | error ("Task not resumed"); | |
3265 | ||
3266 | ret = task_resume (inferior_task); | |
3267 | CHK ("task_resume_command: task_resume", ret); | |
3268 | ||
3269 | if (ta_info.suspend_count == 1) | |
3270 | { | |
5d76c8e6 | 3271 | warning ("Inferior task %d is no longer suspended", mid); |
c2d751d5 JK |
3272 | must_suspend_thread = 1; |
3273 | /* @@ This is not complete: Registers change all the time when not | |
3274 | suspended! */ | |
3275 | registers_changed (); | |
3276 | } | |
3277 | else | |
5d76c8e6 | 3278 | warning ("Inferior task %d suspend count is now %d", |
c2d751d5 JK |
3279 | mid, ta_info.suspend_count-1); |
3280 | } | |
3281 | ||
3282 | ||
3283 | void | |
3284 | task_suspend_command (args, from_tty) | |
3285 | char *args; | |
3286 | int from_tty; | |
3287 | { | |
3288 | kern_return_t ret; | |
3289 | task_basic_info_data_t ta_info; | |
3290 | int infoCnt = TASK_BASIC_INFO_COUNT; | |
3291 | int mid = map_port_name_to_mid (inferior_task, MACH_TYPE_TASK); | |
3292 | ||
3293 | MACH_ERROR_NO_INFERIOR; | |
3294 | ||
3295 | /* Would be trivial to change, but is it desirable? */ | |
3296 | if (args) | |
3297 | error ("Currently gdb can suspend only it's inferior task"); | |
3298 | ||
3299 | ret = task_suspend (inferior_task); | |
3300 | CHK ("task_suspend_command: task_suspend", ret); | |
3301 | ||
3302 | must_suspend_thread = 0; | |
3303 | ||
3304 | ret = task_info (inferior_task, | |
3305 | TASK_BASIC_INFO, | |
3306 | (task_info_t) &ta_info, | |
3307 | &infoCnt); | |
3308 | CHK ("task_suspend_command: task_info failed", ret); | |
3309 | ||
5d76c8e6 | 3310 | warning ("Inferior task %d suspend count is now %d", |
c2d751d5 JK |
3311 | mid, ta_info.suspend_count); |
3312 | } | |
3313 | ||
843cea0d | 3314 | static char * |
c2d751d5 JK |
3315 | get_size (bytes) |
3316 | int bytes; | |
3317 | { | |
3318 | static char size [ 30 ]; | |
3319 | int zz = bytes/1024; | |
3320 | ||
3321 | if (zz / 1024) | |
3322 | sprintf (size, "%-2.1f M", ((float)bytes)/(1024.0*1024.0)); | |
3323 | else | |
3324 | sprintf (size, "%d K", zz); | |
3325 | ||
3326 | return size; | |
3327 | } | |
3328 | ||
3329 | /* Does this require the target task to be suspended?? I don't think so. */ | |
3330 | void | |
3331 | task_info_command (args, from_tty) | |
3332 | char *args; | |
3333 | int from_tty; | |
3334 | { | |
3335 | int mid = -5; | |
3336 | mach_port_t task; | |
3337 | kern_return_t ret; | |
3338 | task_basic_info_data_t ta_info; | |
3339 | int infoCnt = TASK_BASIC_INFO_COUNT; | |
3340 | int page_size = round_page(1); | |
3341 | int thread_count = 0; | |
3342 | ||
3343 | if (MACH_PORT_VALID (inferior_task)) | |
3344 | mid = map_port_name_to_mid (inferior_task, | |
3345 | MACH_TYPE_TASK); | |
3346 | ||
3347 | task = inferior_task; | |
3348 | ||
3349 | if (args) | |
3350 | { | |
3351 | int tmid = atoi (args); | |
3352 | ||
3353 | if (tmid <= 0) | |
3354 | error ("Invalid mid %d for task info", tmid); | |
3355 | ||
3356 | if (tmid != mid) | |
3357 | { | |
3358 | mid = tmid; | |
3359 | ret = machid_mach_port (mid_server, mid_auth, tmid, &task); | |
3360 | CHK ("task_info_command: machid_mach_port map failed", ret); | |
3361 | } | |
3362 | } | |
3363 | ||
3364 | if (mid < 0) | |
3365 | error ("You have to give the task MID as an argument"); | |
3366 | ||
3367 | ret = task_info (task, | |
3368 | TASK_BASIC_INFO, | |
3369 | (task_info_t) &ta_info, | |
3370 | &infoCnt); | |
3371 | CHK ("task_info_command: task_info failed", ret); | |
3372 | ||
3373 | printf_filtered ("\nTask info for task %d:\n\n", mid); | |
3374 | printf_filtered (" Suspend count : %d\n", ta_info.suspend_count); | |
3375 | printf_filtered (" Base priority : %d\n", ta_info.base_priority); | |
3376 | printf_filtered (" Virtual size : %s\n", get_size (ta_info.virtual_size)); | |
3377 | printf_filtered (" Resident size : %s\n", get_size (ta_info.resident_size)); | |
3378 | ||
3379 | { | |
3380 | thread_array_t thread_list; | |
3381 | ||
3382 | ret = task_threads (task, &thread_list, &thread_count); | |
3383 | CHK ("task_info_command: task_threads", ret); | |
3384 | ||
3385 | printf_filtered (" Thread count : %d\n", thread_count); | |
3386 | ||
3387 | consume_send_rights (thread_list, thread_count); | |
3388 | ret = vm_deallocate(mach_task_self(), | |
3389 | (vm_address_t)thread_list, | |
3390 | (thread_count * sizeof(int))); | |
3391 | CHK("Error trying to deallocate thread list", ret); | |
3392 | } | |
3393 | if (have_emulator_p (task)) | |
3394 | printf_filtered (" Emulator at : 0x%x..0x%x\n", | |
3395 | EMULATOR_BASE, EMULATOR_END); | |
3396 | else | |
3397 | printf_filtered (" No emulator.\n"); | |
3398 | ||
3399 | if (thread_count && task == inferior_task) | |
3400 | printf_filtered ("\nUse the \"thread list\" command to see the threads\n"); | |
3401 | } | |
3402 | \f | |
3403 | /* You may either FORWARD the exception to the inferior, or KEEP | |
3404 | * it and return to GDB command level. | |
3405 | * | |
3406 | * exception mid [ forward | keep ] | |
3407 | */ | |
3408 | ||
843cea0d | 3409 | static void |
c2d751d5 JK |
3410 | exception_command (args, from_tty) |
3411 | char *args; | |
3412 | int from_tty; | |
3413 | { | |
3414 | char *scan = args; | |
3415 | int exception; | |
3416 | int len; | |
3417 | ||
3418 | if (!args) | |
3419 | error_no_arg ("exception number action"); | |
3420 | ||
3421 | while (*scan == ' ' || *scan == '\t') scan++; | |
3422 | ||
3423 | if ('0' <= *scan && *scan <= '9') | |
3424 | while ('0' <= *scan && *scan <= '9') | |
3425 | scan++; | |
3426 | else | |
3427 | error ("exception number action"); | |
3428 | ||
3429 | exception = atoi (args); | |
3430 | if (exception <= 0 || exception > MAX_EXCEPTION) | |
3431 | error ("Allowed exception numbers are in range 1..%d", | |
3432 | MAX_EXCEPTION); | |
3433 | ||
3434 | if (*scan != ' ' && *scan != '\t') | |
3435 | error ("exception number must be followed by a space"); | |
3436 | else | |
3437 | while (*scan == ' ' || *scan == '\t') scan++; | |
3438 | ||
3439 | args = scan; | |
3440 | len = 0; | |
3441 | while (*scan) | |
3442 | { | |
3443 | len++; | |
3444 | scan++; | |
3445 | } | |
3446 | ||
3447 | if (!len) | |
3448 | error("exception number action"); | |
3449 | ||
3450 | if (!strncasecmp (args, "forward", len)) | |
3451 | exception_map[ exception ].forward = TRUE; | |
3452 | else if (!strncasecmp (args, "keep", len)) | |
3453 | exception_map[ exception ].forward = FALSE; | |
3454 | else | |
3455 | error ("exception action is either \"keep\" or \"forward\""); | |
3456 | } | |
3457 | ||
843cea0d | 3458 | static void |
c2d751d5 JK |
3459 | print_exception_info (exception) |
3460 | int exception; | |
3461 | { | |
3462 | boolean_t forward = exception_map[ exception ].forward; | |
3463 | ||
3464 | printf_filtered ("%s\t(%d): ", exception_map[ exception ].name, | |
3465 | exception); | |
3466 | if (!forward) | |
3467 | if (exception_map[ exception ].sigmap != SIG_UNKNOWN) | |
3468 | printf_filtered ("keep and handle as signal %d\n", | |
3469 | exception_map[ exception ].sigmap); | |
3470 | else | |
3471 | printf_filtered ("keep and handle as unknown signal %d\n", | |
3472 | exception_map[ exception ].sigmap); | |
3473 | else | |
3474 | printf_filtered ("forward exception to inferior\n"); | |
3475 | } | |
3476 | ||
3477 | void | |
3478 | exception_info (args, from_tty) | |
3479 | char *args; | |
3480 | int from_tty; | |
3481 | { | |
3482 | int exception; | |
3483 | ||
3484 | if (!args) | |
3485 | for (exception = 1; exception <= MAX_EXCEPTION; exception++) | |
3486 | print_exception_info (exception); | |
3487 | else | |
3488 | { | |
3489 | exception = atoi (args); | |
3490 | ||
3491 | if (exception <= 0 || exception > MAX_EXCEPTION) | |
3492 | error ("Invalid exception number, values from 1 to %d allowed", | |
3493 | MAX_EXCEPTION); | |
3494 | print_exception_info (exception); | |
3495 | } | |
3496 | } | |
3497 | \f | |
3498 | /* Check for actions for mach exceptions. | |
3499 | */ | |
3500 | mach3_exception_actions (w, force_print_only, who) | |
3501 | WAITTYPE *w; | |
3502 | boolean_t force_print_only; | |
3503 | char *who; | |
3504 | { | |
3505 | boolean_t force_print = FALSE; | |
3506 | ||
3507 | ||
3508 | if (force_print_only || | |
3509 | exception_map[stop_exception].sigmap == SIG_UNKNOWN) | |
3510 | force_print = TRUE; | |
3511 | else | |
3512 | WSETSTOP (*w, exception_map[stop_exception].sigmap); | |
3513 | ||
3514 | if (exception_map[stop_exception].print || force_print) | |
3515 | { | |
493424b1 | 3516 | target_terminal_ours (); |
c2d751d5 JK |
3517 | |
3518 | printf_filtered ("\n%s received %s exception : ", | |
3519 | who, | |
3520 | exception_map[stop_exception].name); | |
3521 | ||
3522 | wrap_here (" "); | |
3523 | ||
3524 | switch(stop_exception) { | |
3525 | case EXC_BAD_ACCESS: | |
3526 | printf_filtered ("referencing address 0x%x : %s\n", | |
3527 | stop_subcode, | |
3528 | mach_error_string (stop_code)); | |
3529 | break; | |
3530 | case EXC_BAD_INSTRUCTION: | |
3531 | printf_filtered | |
3532 | ("illegal or undefined instruction. code %d subcode %d\n", | |
3533 | stop_code, stop_subcode); | |
3534 | break; | |
3535 | case EXC_ARITHMETIC: | |
3536 | printf_filtered ("code %d\n", stop_code); | |
3537 | break; | |
3538 | case EXC_EMULATION: | |
3539 | printf_filtered ("code %d subcode %d\n", stop_code, stop_subcode); | |
3540 | break; | |
3541 | case EXC_SOFTWARE: | |
3542 | printf_filtered ("%s specific, code 0x%x\n", | |
3543 | stop_code < 0xffff ? "hardware" : "os emulation", | |
3544 | stop_code); | |
3545 | break; | |
3546 | case EXC_BREAKPOINT: | |
3547 | printf_filtered ("type %d (machine dependent)\n", | |
3548 | stop_code); | |
3549 | break; | |
3550 | default: | |
3551 | fatal ("Unknown exception"); | |
3552 | } | |
c2d751d5 JK |
3553 | } |
3554 | } | |
3555 | \f | |
3556 | setup_notify_port (create_new) | |
3557 | int create_new; | |
3558 | { | |
3559 | kern_return_t ret; | |
3560 | ||
3561 | if (MACH_PORT_VALID (our_notify_port)) | |
3562 | { | |
3563 | ret = mach_port_destroy (mach_task_self (), our_notify_port); | |
3564 | CHK ("Could not destroy our_notify_port", ret); | |
3565 | } | |
3566 | ||
3567 | our_notify_port = MACH_PORT_NULL; | |
3568 | notify_chain = (port_chain_t) NULL; | |
3569 | port_chain_destroy (port_chain_obstack); | |
3570 | ||
3571 | if (create_new) | |
3572 | { | |
3573 | ret = mach_port_allocate (mach_task_self(), | |
3574 | MACH_PORT_RIGHT_RECEIVE, | |
3575 | &our_notify_port); | |
3576 | if (ret != KERN_SUCCESS) | |
3577 | fatal("Creating notify port %s", mach_error_string(ret)); | |
3578 | ||
3579 | ret = mach_port_move_member(mach_task_self(), | |
3580 | our_notify_port, | |
3581 | inferior_wait_port_set); | |
3582 | if (ret != KERN_SUCCESS) | |
3583 | fatal("initial move member %s",mach_error_string(ret)); | |
3584 | } | |
3585 | } | |
3586 | ||
3587 | /* | |
3588 | * Register our message port to the net name server | |
3589 | * | |
3590 | * Currently used only by the external stop-gdb program | |
3591 | * since ^C does not work if you would like to enter | |
3592 | * gdb command level while debugging your program. | |
3593 | * | |
3594 | * NOTE: If the message port is sometimes used for other | |
3595 | * purposes also, the NAME must not be a guessable one. | |
3596 | * Then, there should be a way to change it. | |
3597 | */ | |
3598 | ||
3599 | char registered_name[ MAX_NAME_LEN ]; | |
3600 | ||
3601 | void | |
3602 | message_port_info (args, from_tty) | |
3603 | char *args; | |
3604 | int from_tty; | |
3605 | { | |
3606 | if (registered_name[0]) | |
3607 | printf_filtered ("gdb's message port name: '%s'\n", | |
3608 | registered_name); | |
3609 | else | |
3610 | printf_filtered ("gdb's message port is not currently registered\n"); | |
3611 | } | |
3612 | ||
3613 | void | |
3614 | gdb_register_port (name, port) | |
3615 | char *name; | |
3616 | mach_port_t port; | |
3617 | { | |
3618 | kern_return_t ret; | |
3619 | static int already_signed = 0; | |
3620 | int len; | |
3621 | ||
3622 | if (! MACH_PORT_VALID (port) || !name || !*name) | |
3623 | { | |
5d76c8e6 | 3624 | warning ("Invalid registration request"); |
c2d751d5 JK |
3625 | return; |
3626 | } | |
3627 | ||
3628 | if (! already_signed) | |
3629 | { | |
3630 | ret = mach_port_insert_right (mach_task_self (), | |
3631 | our_message_port, | |
3632 | our_message_port, | |
3633 | MACH_MSG_TYPE_MAKE_SEND); | |
3634 | CHK ("Failed to create a signature to our_message_port", ret); | |
3635 | already_signed = 1; | |
3636 | } | |
3637 | else if (already_signed > 1) | |
3638 | { | |
3639 | ret = netname_check_out (name_server_port, | |
3640 | registered_name, | |
3641 | our_message_port); | |
3642 | CHK ("Failed to check out gdb's message port", ret); | |
3643 | registered_name[0] = '\000'; | |
3644 | already_signed = 1; | |
3645 | } | |
3646 | ||
3647 | ret = netname_check_in (name_server_port, /* Name server port */ | |
3648 | name, /* Name of service */ | |
3649 | our_message_port, /* Signature */ | |
3650 | port); /* Creates a new send right */ | |
3651 | CHK("Failed to check in the port", ret); | |
3652 | ||
3653 | len = 0; | |
3654 | while(len < MAX_NAME_LEN && *(name+len)) | |
3655 | { | |
3656 | registered_name[len] = *(name+len); | |
3657 | len++; | |
3658 | } | |
3659 | registered_name[len] = '\000'; | |
3660 | already_signed = 2; | |
3661 | } | |
3662 | ||
3663 | struct cmd_list_element *cmd_thread_list; | |
3664 | struct cmd_list_element *cmd_task_list; | |
3665 | ||
3666 | /*ARGSUSED*/ | |
843cea0d | 3667 | static void |
c2d751d5 JK |
3668 | thread_command (arg, from_tty) |
3669 | char *arg; | |
3670 | int from_tty; | |
3671 | { | |
199b2450 TL |
3672 | printf_unfiltered ("\"thread\" must be followed by the name of a thread command.\n"); |
3673 | help_list (cmd_thread_list, "thread ", -1, gdb_stdout); | |
c2d751d5 JK |
3674 | } |
3675 | ||
3676 | /*ARGSUSED*/ | |
843cea0d | 3677 | static void |
c2d751d5 JK |
3678 | task_command (arg, from_tty) |
3679 | char *arg; | |
3680 | int from_tty; | |
3681 | { | |
199b2450 TL |
3682 | printf_unfiltered ("\"task\" must be followed by the name of a task command.\n"); |
3683 | help_list (cmd_task_list, "task ", -1, gdb_stdout); | |
c2d751d5 JK |
3684 | } |
3685 | ||
3686 | add_mach_specific_commands () | |
3687 | { | |
c2d751d5 JK |
3688 | /* Thread handling commands */ |
3689 | ||
843cea0d JK |
3690 | /* FIXME: Move our thread support into the generic thread.c stuff so we |
3691 | can share that code. */ | |
3692 | add_prefix_cmd ("mthread", class_stack, thread_command, | |
3693 | "Generic command for handling Mach threads in the debugged task.", | |
c2d751d5 JK |
3694 | &cmd_thread_list, "thread ", 0, &cmdlist); |
3695 | ||
843cea0d | 3696 | add_com_alias ("th", "mthread", class_stack, 1); |
c2d751d5 JK |
3697 | |
3698 | add_cmd ("select", class_stack, thread_select_command, | |
3699 | "Select and print MID of the selected thread", | |
3700 | &cmd_thread_list); | |
3701 | add_cmd ("list", class_stack, thread_list_command, | |
3702 | "List info of task's threads. Selected thread is marked with '*'", | |
3703 | &cmd_thread_list); | |
3704 | add_cmd ("suspend", class_run, thread_suspend_command, | |
3705 | "Suspend one or all of the threads in the selected task.", | |
3706 | &cmd_thread_list); | |
3707 | add_cmd ("resume", class_run, thread_resume_command, | |
3708 | "Resume one or all of the threads in the selected task.", | |
3709 | &cmd_thread_list); | |
3710 | add_cmd ("kill", class_run, thread_kill_command, | |
3711 | "Kill the specified thread MID from inferior task.", | |
3712 | &cmd_thread_list); | |
f4e0e098 JMD |
3713 | #if 0 |
3714 | /* The rest of this support (condition_thread) was not merged. It probably | |
3715 | should not be merged in this form, but instead added to the generic GDB | |
3716 | thread support. */ | |
c2d751d5 JK |
3717 | add_cmd ("break", class_breakpoint, condition_thread, |
3718 | "Breakpoint N will only be effective for thread MID or @SLOT\n\ | |
3719 | If MID/@SLOT is omitted allow all threads to break at breakpoint", | |
3720 | &cmd_thread_list); | |
f4e0e098 | 3721 | #endif |
c2d751d5 | 3722 | /* Thread command shorthands (for backward compatibility) */ |
843cea0d JK |
3723 | add_alias_cmd ("ts", "mthread select", 0, 0, &cmdlist); |
3724 | add_alias_cmd ("tl", "mthread list", 0, 0, &cmdlist); | |
c2d751d5 JK |
3725 | |
3726 | /* task handling commands */ | |
3727 | ||
3728 | add_prefix_cmd ("task", class_stack, task_command, | |
3729 | "Generic command for handling debugged task.", | |
3730 | &cmd_task_list, "task ", 0, &cmdlist); | |
3731 | ||
3732 | add_com_alias ("ta", "task", class_stack, 1); | |
3733 | ||
3734 | add_cmd ("suspend", class_run, task_suspend_command, | |
3735 | "Suspend the inferior task.", | |
3736 | &cmd_task_list); | |
3737 | add_cmd ("resume", class_run, task_resume_command, | |
3738 | "Resume the inferior task.", | |
3739 | &cmd_task_list); | |
3740 | add_cmd ("info", no_class, task_info_command, | |
3741 | "Print information about the specified task.", | |
3742 | &cmd_task_list); | |
3743 | ||
3744 | /* Print my message port name */ | |
3745 | ||
3746 | add_info ("message-port", message_port_info, | |
3747 | "Returns the name of gdb's message port in the netnameserver"); | |
3748 | ||
3749 | /* Exception commands */ | |
3750 | ||
3751 | add_info ("exceptions", exception_info, | |
3752 | "What debugger does when program gets various exceptions.\n\ | |
3753 | Specify an exception number as argument to print info on that\n\ | |
3754 | exception only."); | |
3755 | ||
3756 | add_com ("exception", class_run, exception_command, | |
3757 | "Specify how to handle an exception.\n\ | |
3758 | Args are exception number followed by \"forward\" or \"keep\".\n\ | |
3759 | `Forward' means forward the exception to the program's normal exception\n\ | |
3760 | handler.\n\ | |
3761 | `Keep' means reenter debugger if this exception happens, and GDB maps\n\ | |
3762 | the exception to some signal (see info exception)\n\ | |
3763 | Normally \"keep\" is used to return to GDB on exception."); | |
3764 | } | |
3765 | ||
c2d751d5 JK |
3766 | kern_return_t |
3767 | do_mach_notify_dead_name (notify, name) | |
3768 | mach_port_t notify; | |
3769 | mach_port_t name; | |
3770 | { | |
3771 | kern_return_t kr = KERN_SUCCESS; | |
3772 | ||
3773 | /* Find the thing that notified */ | |
3774 | port_chain_t element = port_chain_member (notify_chain, name); | |
3775 | ||
3776 | /* Take name of from unreceived dead name notification list */ | |
3777 | notify_chain = port_chain_delete (notify_chain, name); | |
3778 | ||
3779 | if (! element) | |
3780 | error ("Received a dead name notify from unchained port (0x%x)", name); | |
3781 | ||
3782 | switch (element->type) { | |
3783 | ||
3784 | case MACH_TYPE_THREAD: | |
5d76c8e6 | 3785 | target_terminal_ours_for_output (); |
c2d751d5 JK |
3786 | if (name == current_thread) |
3787 | { | |
5d76c8e6 | 3788 | printf_filtered ("\nCurrent thread %d died", element->mid); |
c2d751d5 JK |
3789 | current_thread = MACH_PORT_NULL; |
3790 | } | |
3791 | else | |
5d76c8e6 | 3792 | printf_filtered ("\nThread %d died", element->mid); |
c2d751d5 JK |
3793 | |
3794 | break; | |
3795 | ||
3796 | case MACH_TYPE_TASK: | |
5d76c8e6 | 3797 | target_terminal_ours_for_output (); |
c2d751d5 | 3798 | if (name != inferior_task) |
5d76c8e6 | 3799 | printf_filtered ("Task %d died, but it was not the selected task", |
c2d751d5 JK |
3800 | element->mid); |
3801 | else | |
3802 | { | |
5d76c8e6 | 3803 | printf_filtered ("Current task %d died", element->mid); |
c2d751d5 JK |
3804 | |
3805 | mach_port_destroy (mach_task_self(), name); | |
3806 | inferior_task = MACH_PORT_NULL; | |
3807 | ||
3808 | if (notify_chain) | |
5d76c8e6 | 3809 | warning ("There were still unreceived dead_name_notifications???"); |
c2d751d5 JK |
3810 | |
3811 | /* Destroy the old notifications */ | |
3812 | setup_notify_port (0); | |
3813 | ||
3814 | } | |
3815 | break; | |
3816 | ||
3817 | default: | |
3818 | error ("Unregistered dead_name 0x%x notification received. Type is %d, mid is 0x%x", | |
3819 | name, element->type, element->mid); | |
3820 | break; | |
3821 | } | |
3822 | ||
3823 | return KERN_SUCCESS; | |
3824 | } | |
3825 | ||
3826 | kern_return_t | |
3827 | do_mach_notify_msg_accepted (notify, name) | |
3828 | mach_port_t notify; | |
3829 | mach_port_t name; | |
3830 | { | |
5d76c8e6 | 3831 | warning ("do_mach_notify_msg_accepted : notify %x, name %x", |
c2d751d5 JK |
3832 | notify, name); |
3833 | return KERN_SUCCESS; | |
3834 | } | |
3835 | ||
3836 | kern_return_t | |
3837 | do_mach_notify_no_senders (notify, mscount) | |
3838 | mach_port_t notify; | |
3839 | mach_port_mscount_t mscount; | |
3840 | { | |
5d76c8e6 | 3841 | warning ("do_mach_notify_no_senders : notify %x, mscount %x", |
c2d751d5 JK |
3842 | notify, mscount); |
3843 | return KERN_SUCCESS; | |
3844 | } | |
3845 | ||
3846 | kern_return_t | |
3847 | do_mach_notify_port_deleted (notify, name) | |
3848 | mach_port_t notify; | |
3849 | mach_port_t name; | |
3850 | { | |
5d76c8e6 | 3851 | warning ("do_mach_notify_port_deleted : notify %x, name %x", |
c2d751d5 JK |
3852 | notify, name); |
3853 | return KERN_SUCCESS; | |
3854 | } | |
3855 | ||
3856 | kern_return_t | |
3857 | do_mach_notify_port_destroyed (notify, rights) | |
3858 | mach_port_t notify; | |
3859 | mach_port_t rights; | |
3860 | { | |
5d76c8e6 | 3861 | warning ("do_mach_notify_port_destroyed : notify %x, rights %x", |
c2d751d5 JK |
3862 | notify, rights); |
3863 | return KERN_SUCCESS; | |
3864 | } | |
3865 | ||
3866 | kern_return_t | |
3867 | do_mach_notify_send_once (notify) | |
3868 | mach_port_t notify; | |
3869 | { | |
3870 | #ifdef DUMP_SYSCALL | |
3871 | /* MANY of these are generated. */ | |
5d76c8e6 | 3872 | warning ("do_mach_notify_send_once : notify %x", |
c2d751d5 JK |
3873 | notify); |
3874 | #endif | |
3875 | return KERN_SUCCESS; | |
3876 | } | |
3877 | ||
3878 | /* Kills the inferior. It's gone when you call this */ | |
843cea0d | 3879 | static void |
c2d751d5 JK |
3880 | kill_inferior_fast () |
3881 | { | |
3882 | WAITTYPE w; | |
3883 | ||
3884 | if (inferior_pid == 0 || inferior_pid == 1) | |
3885 | return; | |
3886 | ||
3887 | /* kill() it, since the Unix server does not otherwise notice when | |
3888 | * killed with task_terminate(). | |
3889 | */ | |
3890 | if (inferior_pid > 0) | |
3891 | kill (inferior_pid, SIGKILL); | |
3892 | ||
3893 | /* It's propably terminate already */ | |
3894 | (void) task_terminate (inferior_task); | |
3895 | ||
3896 | inferior_task = MACH_PORT_NULL; | |
3897 | current_thread = MACH_PORT_NULL; | |
3898 | ||
3899 | wait3 (&w, WNOHANG, 0); | |
3900 | ||
3901 | setup_notify_port (0); | |
3902 | } | |
3903 | ||
843cea0d JK |
3904 | static void |
3905 | m3_kill_inferior () | |
c2d751d5 JK |
3906 | { |
3907 | kill_inferior_fast (); | |
3908 | target_mourn_inferior (); | |
3909 | } | |
3910 | ||
843cea0d JK |
3911 | /* Clean up after the inferior dies. */ |
3912 | ||
3913 | static void | |
3914 | m3_mourn_inferior () | |
3915 | { | |
3916 | unpush_target (&m3_ops); | |
3917 | generic_mourn_inferior (); | |
3918 | } | |
3919 | ||
3920 | \f | |
3921 | /* Fork an inferior process, and start debugging it. */ | |
3922 | ||
3923 | static void | |
3924 | m3_create_inferior (exec_file, allargs, env) | |
3925 | char *exec_file; | |
3926 | char *allargs; | |
3927 | char **env; | |
3928 | { | |
65b07ddc | 3929 | fork_inferior (exec_file, allargs, env, m3_trace_me, m3_trace_him, NULL, NULL); |
843cea0d JK |
3930 | /* We are at the first instruction we care about. */ |
3931 | /* Pedal to the metal... */ | |
3932 | proceed ((CORE_ADDR) -1, 0, 0); | |
3933 | } | |
3934 | ||
3935 | /* Mark our target-struct as eligible for stray "run" and "attach" | |
3936 | commands. */ | |
3937 | static int | |
3938 | m3_can_run () | |
3939 | { | |
3940 | return 1; | |
3941 | } | |
c2d751d5 JK |
3942 | \f |
3943 | /* Mach 3.0 does not need ptrace for anything | |
3944 | * Make sure nobody uses it on mach. | |
3945 | */ | |
3946 | ptrace (a,b,c,d) | |
3947 | int a,b,c,d; | |
3948 | { | |
3949 | error ("Lose, Lose! Somebody called ptrace\n"); | |
3950 | } | |
3951 | ||
3952 | /* Resume execution of the inferior process. | |
3953 | If STEP is nonzero, single-step it. | |
3954 | If SIGNAL is nonzero, give it that signal. */ | |
3955 | ||
3956 | void | |
843cea0d JK |
3957 | m3_resume (pid, step, signal) |
3958 | int pid; | |
c2d751d5 | 3959 | int step; |
67ac9759 | 3960 | enum target_signal signal; |
c2d751d5 JK |
3961 | { |
3962 | kern_return_t ret; | |
3963 | ||
3964 | if (step) | |
3965 | { | |
3966 | thread_basic_info_data_t th_info; | |
3967 | unsigned int infoCnt = THREAD_BASIC_INFO_COUNT; | |
3968 | ||
3969 | /* There is no point in single stepping when current_thread | |
3970 | * is dead. | |
3971 | */ | |
3972 | if (! MACH_PORT_VALID (current_thread)) | |
3973 | error ("No thread selected; can not single step"); | |
3974 | ||
3975 | /* If current_thread is suspended, tracing it would never return. | |
3976 | */ | |
3977 | ret = thread_info (current_thread, | |
3978 | THREAD_BASIC_INFO, | |
3979 | (thread_info_t) &th_info, | |
3980 | &infoCnt); | |
3981 | CHK ("child_resume: can't get thread info", ret); | |
3982 | ||
3983 | if (th_info.suspend_count) | |
3984 | error ("Can't trace a suspended thread. Use \"thread resume\" command to resume it"); | |
3985 | } | |
3986 | ||
3987 | vm_read_cache_valid = FALSE; | |
3988 | ||
3989 | if (signal && inferior_pid > 0) /* Do not signal, if attached by MID */ | |
67ac9759 | 3990 | kill (inferior_pid, target_signal_to_host (signal)); |
c2d751d5 JK |
3991 | |
3992 | if (step) | |
3993 | { | |
3994 | suspend_all_threads (0); | |
3995 | ||
3996 | setup_single_step (current_thread, TRUE); | |
3997 | ||
3998 | ret = thread_resume (current_thread); | |
3999 | CHK ("thread_resume", ret); | |
4000 | } | |
4001 | ||
4002 | ret = task_resume (inferior_task); | |
4003 | if (ret == KERN_FAILURE) | |
5d76c8e6 | 4004 | warning ("Task was not suspended"); |
c2d751d5 JK |
4005 | else |
4006 | CHK ("Resuming task", ret); | |
4007 | ||
4008 | /* HACK HACK This is needed by the multiserver system HACK HACK */ | |
4009 | while ((ret = task_resume(inferior_task)) == KERN_SUCCESS) | |
4010 | /* make sure it really runs */; | |
4011 | /* HACK HACK This is needed by the multiserver system HACK HACK */ | |
4012 | } | |
4013 | \f | |
4014 | #ifdef ATTACH_DETACH | |
4015 | ||
4016 | /* Start debugging the process with the given task */ | |
4017 | void | |
4018 | task_attach (tid) | |
4019 | task_t tid; | |
4020 | { | |
4021 | kern_return_t ret; | |
4022 | inferior_task = tid; | |
4023 | ||
4024 | ret = task_suspend (inferior_task); | |
4025 | CHK("task_attach: task_suspend", ret); | |
4026 | ||
4027 | must_suspend_thread = 0; | |
4028 | ||
4029 | setup_notify_port (1); | |
4030 | ||
4031 | request_notify (inferior_task, MACH_NOTIFY_DEAD_NAME, MACH_TYPE_TASK); | |
4032 | ||
4033 | setup_exception_port (); | |
4034 | ||
4035 | emulator_present = have_emulator_p (inferior_task); | |
4036 | ||
4037 | attach_flag = 1; | |
4038 | } | |
4039 | ||
4040 | /* Well, we can call error also here and leave the | |
4041 | * target stack inconsistent. Sigh. | |
4042 | * Fix this sometime (the only way to fail here is that | |
4043 | * the task has no threads at all, which is rare, but | |
4044 | * possible; or if the target task has died, which is also | |
4045 | * possible, but unlikely, since it has been suspended. | |
4046 | * (Someone must have killed it)) | |
4047 | */ | |
4048 | void | |
4049 | attach_to_thread () | |
4050 | { | |
4051 | if (select_thread (inferior_task, 0, 1) != KERN_SUCCESS) | |
4052 | error ("Could not select any threads to attach to"); | |
4053 | } | |
4054 | ||
4055 | mid_attach (mid) | |
4056 | int mid; | |
4057 | { | |
4058 | kern_return_t ret; | |
4059 | ||
4060 | ret = machid_mach_port (mid_server, mid_auth, mid, &inferior_task); | |
4061 | CHK("mid_attach: machid_mach_port", ret); | |
4062 | ||
4063 | task_attach (inferior_task); | |
4064 | ||
4065 | return mid; | |
4066 | } | |
4067 | ||
4068 | /* | |
4069 | * Start debugging the process whose unix process-id is PID. | |
4070 | * A negative "pid" value is legal and signifies a mach_id not a unix pid. | |
4071 | * | |
4072 | * Prevent (possible unwanted) dangerous operations by enabled users | |
4073 | * like "atta 0" or "atta foo" (equal to the previous :-) and | |
4074 | * "atta pidself". Anyway, the latter is allowed by specifying a MID. | |
4075 | */ | |
843cea0d JK |
4076 | static int |
4077 | m3_do_attach (pid) | |
c2d751d5 JK |
4078 | int pid; |
4079 | { | |
4080 | kern_return_t ret; | |
4081 | ||
4082 | if (pid == 0) | |
4083 | error("MID=0, Debugging the master unix server does not compute"); | |
4084 | ||
4085 | /* Foo. This assumes gdb has a unix pid */ | |
4086 | if (pid == getpid()) | |
4087 | error ("I will debug myself only by mid. (Gdb would suspend itself!)"); | |
4088 | ||
4089 | if (pid < 0) | |
4090 | { | |
4091 | mid_attach (-(pid)); | |
4092 | ||
4093 | /* inferior_pid will be NEGATIVE! */ | |
4094 | inferior_pid = pid; | |
4095 | ||
4096 | return inferior_pid; | |
4097 | } | |
4098 | ||
4099 | inferior_task = task_by_pid (pid); | |
4100 | if (! MACH_PORT_VALID (inferior_task)) | |
4101 | error("Cannot map Unix pid %d to Mach task port", pid); | |
4102 | ||
4103 | task_attach (inferior_task); | |
4104 | ||
4105 | inferior_pid = pid; | |
4106 | ||
4107 | return inferior_pid; | |
4108 | } | |
4109 | ||
843cea0d JK |
4110 | /* Attach to process PID, then initialize for debugging it |
4111 | and wait for the trace-trap that results from attaching. */ | |
4112 | ||
4113 | static void | |
4114 | m3_attach (args, from_tty) | |
4115 | char *args; | |
4116 | int from_tty; | |
4117 | { | |
4118 | char *exec_file; | |
4119 | int pid; | |
4120 | ||
4121 | if (!args) | |
4122 | error_no_arg ("process-id to attach"); | |
4123 | ||
4124 | pid = atoi (args); | |
4125 | ||
4126 | if (pid == getpid()) /* Trying to masturbate? */ | |
4127 | error ("I refuse to debug myself!"); | |
4128 | ||
4129 | if (from_tty) | |
4130 | { | |
4131 | exec_file = (char *) get_exec_file (0); | |
4132 | ||
4133 | if (exec_file) | |
199b2450 | 4134 | printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, target_pid_to_str (pid)); |
843cea0d | 4135 | else |
199b2450 | 4136 | printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid)); |
843cea0d | 4137 | |
199b2450 | 4138 | gdb_flush (gdb_stdout); |
843cea0d JK |
4139 | } |
4140 | ||
4141 | m3_do_attach (pid); | |
4142 | inferior_pid = pid; | |
493424b1 | 4143 | push_target (&m3_ops); |
843cea0d JK |
4144 | } |
4145 | \f | |
c2d751d5 JK |
4146 | void |
4147 | deallocate_inferior_ports () | |
4148 | { | |
4149 | kern_return_t ret; | |
4150 | thread_array_t thread_list; | |
4151 | int thread_count, index; | |
4152 | ||
4153 | if (!MACH_PORT_VALID (inferior_task)) | |
4154 | return; | |
4155 | ||
4156 | ret = task_threads (inferior_task, &thread_list, &thread_count); | |
4157 | if (ret != KERN_SUCCESS) | |
4158 | { | |
5d76c8e6 | 4159 | warning ("deallocate_inferior_ports: task_threads", |
c2d751d5 JK |
4160 | mach_error_string(ret)); |
4161 | return; | |
4162 | } | |
4163 | ||
4164 | /* Get rid of send rights to task threads */ | |
4165 | for (index = 0; index < thread_count; index++) | |
4166 | { | |
4167 | int rights; | |
4168 | ret = mach_port_get_refs (mach_task_self (), | |
4169 | thread_list[index], | |
4170 | MACH_PORT_RIGHT_SEND, | |
4171 | &rights); | |
4172 | CHK("deallocate_inferior_ports: get refs", ret); | |
4173 | ||
4174 | if (rights > 0) | |
4175 | { | |
4176 | ret = mach_port_mod_refs (mach_task_self (), | |
4177 | thread_list[index], | |
4178 | MACH_PORT_RIGHT_SEND, | |
4179 | -rights); | |
4180 | CHK("deallocate_inferior_ports: mod refs", ret); | |
4181 | } | |
4182 | } | |
4183 | ||
4184 | ret = mach_port_mod_refs (mach_task_self (), | |
4185 | inferior_exception_port, | |
4186 | MACH_PORT_RIGHT_RECEIVE, | |
4187 | -1); | |
4188 | CHK ("deallocate_inferior_ports: cannot get rid of exception port", ret); | |
4189 | ||
4190 | ret = mach_port_deallocate (mach_task_self (), | |
4191 | inferior_task); | |
4192 | CHK ("deallocate_task_port: deallocating inferior_task", ret); | |
4193 | ||
4194 | current_thread = MACH_PORT_NULL; | |
4195 | inferior_task = MACH_PORT_NULL; | |
4196 | } | |
4197 | ||
4198 | /* Stop debugging the process whose number is PID | |
4199 | and continue it with signal number SIGNAL. | |
4200 | SIGNAL = 0 means just continue it. */ | |
4201 | ||
843cea0d JK |
4202 | static void |
4203 | m3_do_detach (signal) | |
c2d751d5 JK |
4204 | int signal; |
4205 | { | |
4206 | kern_return_t ret; | |
4207 | ||
4208 | MACH_ERROR_NO_INFERIOR; | |
4209 | ||
4210 | if (current_thread != MACH_PORT_NULL) | |
4211 | { | |
4212 | /* Store the gdb's view of the thread we are deselecting | |
4213 | * before we detach. | |
4214 | * @@ I am really not sure if this is ever needeed. | |
4215 | */ | |
4216 | target_prepare_to_store (); | |
4217 | target_store_registers (-1); | |
4218 | } | |
4219 | ||
4220 | ret = task_set_special_port (inferior_task, | |
4221 | TASK_EXCEPTION_PORT, | |
4222 | inferior_old_exception_port); | |
4223 | CHK ("task_set_special_port", ret); | |
4224 | ||
4225 | /* Discard all requested notifications */ | |
4226 | setup_notify_port (0); | |
4227 | ||
4228 | if (remove_breakpoints ()) | |
5d76c8e6 | 4229 | warning ("Could not remove breakpoints when detaching"); |
c2d751d5 JK |
4230 | |
4231 | if (signal && inferior_pid > 0) | |
4232 | kill (inferior_pid, signal); | |
4233 | ||
4234 | /* the task might be dead by now */ | |
4235 | (void) task_resume (inferior_task); | |
4236 | ||
4237 | deallocate_inferior_ports (); | |
4238 | ||
4239 | attach_flag = 0; | |
4240 | } | |
843cea0d JK |
4241 | |
4242 | /* Take a program previously attached to and detaches it. | |
4243 | The program resumes execution and will no longer stop | |
4244 | on signals, etc. We'd better not have left any breakpoints | |
4245 | in the program or it'll die when it hits one. For this | |
4246 | to work, it may be necessary for the process to have been | |
4247 | previously attached. It *might* work if the program was | |
4248 | started via fork. */ | |
4249 | ||
4250 | static void | |
4251 | m3_detach (args, from_tty) | |
4252 | char *args; | |
4253 | int from_tty; | |
4254 | { | |
4255 | int siggnal = 0; | |
4256 | ||
4257 | if (from_tty) | |
4258 | { | |
4259 | char *exec_file = get_exec_file (0); | |
4260 | if (exec_file == 0) | |
4261 | exec_file = ""; | |
199b2450 | 4262 | printf_unfiltered ("Detaching from program: %s %s\n", |
843cea0d | 4263 | exec_file, target_pid_to_str (inferior_pid)); |
199b2450 | 4264 | gdb_flush (gdb_stdout); |
843cea0d JK |
4265 | } |
4266 | if (args) | |
4267 | siggnal = atoi (args); | |
4268 | ||
4269 | m3_do_detach (siggnal); | |
4270 | inferior_pid = 0; | |
4271 | unpush_target (&m3_ops); /* Pop out of handling an inferior */ | |
4272 | } | |
c2d751d5 JK |
4273 | #endif /* ATTACH_DETACH */ |
4274 | ||
493424b1 JK |
4275 | /* Get ready to modify the registers array. On machines which store |
4276 | individual registers, this doesn't need to do anything. On machines | |
4277 | which store all the registers in one fell swoop, this makes sure | |
4278 | that registers contains all the registers from the program being | |
4279 | debugged. */ | |
4280 | ||
4281 | static void | |
4282 | m3_prepare_to_store () | |
4283 | { | |
4284 | #ifdef CHILD_PREPARE_TO_STORE | |
4285 | CHILD_PREPARE_TO_STORE (); | |
4286 | #endif | |
4287 | } | |
4288 | ||
4289 | /* Print status information about what we're accessing. */ | |
4290 | ||
4291 | static void | |
4292 | m3_files_info (ignore) | |
4293 | struct target_ops *ignore; | |
4294 | { | |
4295 | /* FIXME: should print MID and all that crap. */ | |
4296 | printf_unfiltered ("\tUsing the running image of %s %s.\n", | |
4297 | attach_flag? "attached": "child", target_pid_to_str (inferior_pid)); | |
4298 | } | |
4299 | ||
01cd70b9 JK |
4300 | static void |
4301 | m3_open (arg, from_tty) | |
4302 | char *arg; | |
4303 | int from_tty; | |
4304 | { | |
4305 | error ("Use the \"run\" command to start a Unix child process."); | |
4306 | } | |
4307 | ||
c2d751d5 JK |
4308 | #ifdef DUMP_SYSCALL |
4309 | #ifdef __STDC__ | |
4310 | #define STR(x) #x | |
4311 | #else | |
4312 | #define STR(x) "x" | |
4313 | #endif | |
4314 | ||
4315 | char *bsd1_names[] = { | |
4316 | "execve", | |
4317 | "fork", | |
4318 | "take_signal", | |
4319 | "sigreturn", | |
4320 | "getrusage", | |
4321 | "chdir", | |
4322 | "chroot", | |
4323 | "open", | |
4324 | "creat", | |
4325 | "mknod", | |
4326 | "link", | |
4327 | "symlink", | |
4328 | "unlink", | |
4329 | "access", | |
4330 | "stat", | |
4331 | "readlink", | |
4332 | "chmod", | |
4333 | "chown", | |
4334 | "utimes", | |
4335 | "truncate", | |
4336 | "rename", | |
4337 | "mkdir", | |
4338 | "rmdir", | |
4339 | "xutimes", | |
4340 | "mount", | |
4341 | "umount", | |
4342 | "acct", | |
4343 | "setquota", | |
4344 | "write_short", | |
4345 | "write_long", | |
4346 | "send_short", | |
4347 | "send_long", | |
4348 | "sendto_short", | |
4349 | "sendto_long", | |
4350 | "select", | |
4351 | "task_by_pid", | |
4352 | "recvfrom_short", | |
4353 | "recvfrom_long", | |
4354 | "setgroups", | |
4355 | "setrlimit", | |
4356 | "sigvec", | |
4357 | "sigstack", | |
4358 | "settimeofday", | |
4359 | "adjtime", | |
4360 | "setitimer", | |
4361 | "sethostname", | |
4362 | "bind", | |
4363 | "accept", | |
4364 | "connect", | |
4365 | "setsockopt", | |
4366 | "getsockopt", | |
4367 | "getsockname", | |
4368 | "getpeername", | |
4369 | "init_process", | |
4370 | "table_set", | |
4371 | "table_get", | |
4372 | "pioctl", | |
4373 | "emulator_error", | |
4374 | "readwrite", | |
4375 | "share_wakeup", | |
4376 | 0, | |
4377 | "maprw_request_it", | |
4378 | "maprw_release_it", | |
4379 | "maprw_remap", | |
4380 | "pid_by_task", | |
4381 | }; | |
4382 | ||
4383 | int bsd1_nnames = sizeof(bsd1_names)/sizeof(bsd1_names[0]); | |
4384 | ||
4385 | char* | |
4386 | name_str(name,buf) | |
4387 | ||
4388 | int name; | |
4389 | char *buf; | |
4390 | ||
4391 | { | |
4392 | switch (name) { | |
4393 | case MACH_MSG_TYPE_BOOLEAN: | |
4394 | return "boolean"; | |
4395 | case MACH_MSG_TYPE_INTEGER_16: | |
4396 | return "short"; | |
4397 | case MACH_MSG_TYPE_INTEGER_32: | |
4398 | return "long"; | |
4399 | case MACH_MSG_TYPE_CHAR: | |
4400 | return "char"; | |
4401 | case MACH_MSG_TYPE_BYTE: | |
4402 | return "byte"; | |
4403 | case MACH_MSG_TYPE_REAL: | |
4404 | return "real"; | |
4405 | case MACH_MSG_TYPE_STRING: | |
4406 | return "string"; | |
4407 | default: | |
4408 | sprintf(buf,"%d",name); | |
4409 | return buf; | |
4410 | } | |
4411 | } | |
4412 | ||
4413 | char * | |
4414 | id_str(id,buf) | |
4415 | ||
4416 | int id; | |
4417 | char *buf; | |
4418 | ||
4419 | { | |
4420 | char *p; | |
4421 | if (id >= 101000 && id < 101000+bsd1_nnames) { | |
4422 | if (p = bsd1_names[id-101000]) | |
4423 | return p; | |
4424 | } | |
4425 | if (id == 102000) | |
4426 | return "psignal_retry"; | |
4427 | if (id == 100000) | |
4428 | return "syscall"; | |
4429 | sprintf(buf,"%d",id); | |
4430 | return buf; | |
4431 | } | |
4432 | ||
4433 | print_msg(mp) | |
4434 | mach_msg_header_t *mp; | |
4435 | { | |
4436 | char *fmt_x = "%20s : 0x%08x\n"; | |
4437 | char *fmt_d = "%20s : %10d\n"; | |
4438 | char *fmt_s = "%20s : %s\n"; | |
4439 | char buf[100]; | |
4440 | ||
4441 | puts_filtered ("\n"); | |
4442 | #define pr(fmt,h,x) printf_filtered(fmt,STR(x),(h).x) | |
4443 | pr(fmt_x,(*mp),msgh_bits); | |
4444 | pr(fmt_d,(*mp),msgh_size); | |
4445 | pr(fmt_x,(*mp),msgh_remote_port); | |
4446 | pr(fmt_x,(*mp),msgh_local_port); | |
4447 | pr(fmt_d,(*mp),msgh_kind); | |
4448 | printf_filtered(fmt_s,STR(msgh_id),id_str(mp->msgh_id,buf)); | |
4449 | ||
4450 | if (debug_level > 1) | |
4451 | { | |
4452 | char *p,*ep,*dp; | |
4453 | int plen; | |
4454 | p = (char*)mp; | |
4455 | ep = p+mp->msgh_size; | |
4456 | p += sizeof(*mp); | |
4457 | for(; p < ep; p += plen) { | |
4458 | mach_msg_type_t *tp; | |
4459 | mach_msg_type_long_t *tlp; | |
4460 | int name,size,number; | |
4461 | tp = (mach_msg_type_t*)p; | |
4462 | if (tp->msgt_longform) { | |
4463 | tlp = (mach_msg_type_long_t*)tp; | |
4464 | name = tlp->msgtl_name; | |
4465 | size = tlp->msgtl_size; | |
4466 | number = tlp->msgtl_number; | |
4467 | plen = sizeof(*tlp); | |
4468 | } else { | |
4469 | name = tp->msgt_name; | |
4470 | size = tp->msgt_size; | |
4471 | number = tp->msgt_number; | |
4472 | plen = sizeof(*tp); | |
4473 | } | |
4474 | printf_filtered("name=%-16s size=%2d number=%7d inline=%d long=%d deal=%d\n", | |
4475 | name_str(name,buf),size,number,tp->msgt_inline, | |
4476 | tp->msgt_longform, tp->msgt_deallocate); | |
4477 | dp = p+plen; | |
4478 | if (tp->msgt_inline) { | |
4479 | int l; | |
4480 | l = size*number/8; | |
4481 | l = (l+sizeof(long)-1)&~((sizeof(long))-1); | |
4482 | plen += l; | |
4483 | print_data(dp,size,number); | |
4484 | } else { | |
4485 | plen += sizeof(int*); | |
4486 | } | |
4487 | printf_filtered("plen=%d\n",plen); | |
4488 | } | |
4489 | } | |
4490 | } | |
4491 | ||
4492 | print_data(p,size,number) | |
4493 | ||
4494 | char *p; | |
4495 | ||
4496 | { | |
4497 | int *ip; | |
4498 | short *sp; | |
4499 | int i; | |
4500 | ||
4501 | switch (size) { | |
4502 | case 8: | |
4503 | for(i = 0; i < number; i++) { | |
4504 | printf_filtered(" %02x",p[i]); | |
4505 | } | |
4506 | break; | |
4507 | case 16: | |
4508 | sp = (short*)p; | |
4509 | for(i = 0; i < number; i++) { | |
4510 | printf_filtered(" %04x",sp[i]); | |
4511 | } | |
4512 | break; | |
4513 | case 32: | |
4514 | ip = (int*)p; | |
4515 | for(i = 0; i < number; i++) { | |
4516 | printf_filtered(" %08x",ip[i]); | |
4517 | } | |
4518 | break; | |
4519 | } | |
4520 | puts_filtered("\n"); | |
4521 | } | |
4522 | #endif DUMP_SYSCALL | |
843cea0d | 4523 | |
78b459a7 SG |
4524 | static void |
4525 | m3_stop () | |
4526 | { | |
4527 | error ("to_stop target function not implemented"); | |
4528 | } | |
4529 | ||
4ef1f467 DT |
4530 | static char * |
4531 | m3_pid_to_exec_file (pid) | |
4532 | int pid; | |
4533 | { | |
4534 | error ("to_pid_to_exec_file target function not implemented"); | |
4535 | return NULL; /* To keep all compilers happy. */ | |
4536 | } | |
4537 | ||
8a7dfaa0 SS |
4538 | static void |
4539 | init_m3_ops () | |
4540 | { | |
4541 | m3_ops.to_shortname = "mach"; | |
4542 | m3_ops.to_longname = "Mach child process"; | |
4543 | m3_ops.to_doc = "Mach child process (started by the \"run\" command)."; | |
4544 | m3_ops.to_open = m3_open; | |
4545 | m3_ops.to_attach = m3_attach; | |
4546 | m3_ops.to_detach = m3_detach; | |
4547 | m3_ops.to_resume = m3_resume; | |
4548 | m3_ops.to_wait = mach_really__wait; | |
4549 | m3_ops.to_fetch_registers = fetch_inferior_registers; | |
4550 | m3_ops.to_store_registers = store_inferior_registers; | |
4551 | m3_ops.to_prepare_to_store = m3_prepare_to_store; | |
4552 | m3_ops.to_xfer_memory = m3_xfer_memory; | |
4553 | m3_ops.to_files_info = m3_files_info; | |
4554 | m3_ops.to_insert_breakpoint = memory_insert_breakpoint; | |
4555 | m3_ops.to_remove_breakpoint = memory_remove_breakpoint; | |
4556 | m3_ops.to_terminal_init = terminal_init_inferior; | |
4557 | m3_ops.to_terminal_inferior = terminal_inferior; | |
4558 | m3_ops.to_terminal_ours_for_output = terminal_ours_for_output; | |
4559 | m3_ops.to_terminal_ours = terminal_ours; | |
4560 | m3_ops.to_terminal_info = child_terminal_info; | |
4561 | m3_ops.to_kill = m3_kill_inferior; | |
4562 | m3_ops.to_create_inferior = m3_create_inferior; | |
4563 | m3_ops.to_mourn_inferior = m3_mourn_inferior; | |
4564 | m3_ops.to_can_run = m3_can_run; | |
4565 | m3_ops.to_stop = m3_stop; | |
4566 | m3_ops.to_pid_to_exec_file = m3_pid_to_exec_file; | |
4567 | m3_ops.to_stratum = process_stratum; | |
4568 | m3_ops.to_has_all_memory = 1; | |
4569 | m3_ops.to_has_memory = 1; | |
4570 | m3_ops.to_has_stack = 1; | |
4571 | m3_ops.to_has_registers = 1; | |
4572 | m3_ops.to_has_execution = 1; | |
4573 | m3_ops.to_magic = OPS_MAGIC; | |
4574 | } | |
843cea0d JK |
4575 | |
4576 | void | |
4577 | _initialize_m3_nat () | |
4578 | { | |
4579 | kern_return_t ret; | |
4580 | ||
8a7dfaa0 | 4581 | init_m3_ops (); |
843cea0d JK |
4582 | add_target (&m3_ops); |
4583 | ||
4584 | ret = mach_port_allocate(mach_task_self(), | |
4585 | MACH_PORT_RIGHT_PORT_SET, | |
4586 | &inferior_wait_port_set); | |
4587 | if (ret != KERN_SUCCESS) | |
4588 | fatal("initial port set %s",mach_error_string(ret)); | |
4589 | ||
4590 | /* mach_really_wait now waits for this */ | |
4591 | currently_waiting_for = inferior_wait_port_set; | |
4592 | ||
4593 | ret = netname_look_up(name_server_port, hostname, "MachID", &mid_server); | |
4594 | if (ret != KERN_SUCCESS) | |
4595 | { | |
4596 | mid_server = MACH_PORT_NULL; | |
4597 | ||
5d76c8e6 | 4598 | warning ("initialize machid: netname_lookup_up(MachID) : %s", |
843cea0d | 4599 | mach_error_string(ret)); |
5d76c8e6 | 4600 | warning ("Some (most?) features disabled..."); |
843cea0d JK |
4601 | } |
4602 | ||
4603 | mid_auth = mach_privileged_host_port(); | |
4604 | if (mid_auth == MACH_PORT_NULL) | |
4605 | mid_auth = mach_task_self(); | |
4606 | ||
4607 | obstack_init (port_chain_obstack); | |
4608 | ||
4609 | ret = mach_port_allocate (mach_task_self (), | |
4610 | MACH_PORT_RIGHT_RECEIVE, | |
4611 | &thread_exception_port); | |
4612 | CHK ("Creating thread_exception_port for single stepping", ret); | |
4613 | ||
4614 | ret = mach_port_insert_right (mach_task_self (), | |
4615 | thread_exception_port, | |
4616 | thread_exception_port, | |
4617 | MACH_MSG_TYPE_MAKE_SEND); | |
4618 | CHK ("Inserting send right to thread_exception_port", ret); | |
4619 | ||
4620 | /* Allocate message port */ | |
4621 | ret = mach_port_allocate (mach_task_self (), | |
4622 | MACH_PORT_RIGHT_RECEIVE, | |
4623 | &our_message_port); | |
4624 | if (ret != KERN_SUCCESS) | |
5d76c8e6 | 4625 | warning ("Creating message port %s", mach_error_string (ret)); |
843cea0d JK |
4626 | else |
4627 | { | |
4628 | char buf[ MAX_NAME_LEN ]; | |
4629 | ret = mach_port_move_member(mach_task_self (), | |
4630 | our_message_port, | |
4631 | inferior_wait_port_set); | |
4632 | if (ret != KERN_SUCCESS) | |
5d76c8e6 | 4633 | warning ("message move member %s", mach_error_string (ret)); |
843cea0d JK |
4634 | |
4635 | ||
4636 | /* @@@@ No way to change message port name currently */ | |
4637 | /* Foo. This assumes gdb has a unix pid */ | |
4638 | sprintf (buf, "gdb-%d", getpid ()); | |
4639 | gdb_register_port (buf, our_message_port); | |
4640 | } | |
4641 | ||
4642 | /* Heap for thread commands */ | |
4643 | obstack_init (cproc_obstack); | |
4644 | ||
4645 | add_mach_specific_commands (); | |
4646 | } |