1 /* Interface GDB to Mach 3.0 operating systems.
2 (Most) Mach 3.0 related routines live in this file.
4 Copyright (C) 1992 Free Software Foundation, Inc.
6 This file is part of GDB.
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.
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.
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
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
23 * Author: Jukka Virtanen <jtv@hut.fi>
25 * Helsinki University of Technology
28 * Thanks to my friends who helped with ideas and testing:
30 * Johannes Helander, Antti Louko, Tero Mononen,
31 * jvh@cs.hut.fi alo@hut.fi tmo@cs.hut.fi
33 * Tero Kivinen and Eamonn McManus
34 * kivinen@cs.hut.fi emcmanus@gr.osf.org
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>
58 #include <servers/machid_lib.h>
60 /* Included only for signal names and NSIG
62 * note: There are many problems in signal handling with
63 * gdb in Mach 3.0 in general.
66 #define SIG_UNKNOWN 0 /* Exception that has no matching unix signal */
70 /* This is what a cproc looks like. This is here partly because
71 cthread_internals.h is not a header we can just #include, partly with
72 an eye towards perhaps getting this to work with cross-debugging
73 someday. Best solution is if CMU publishes a real interface to this
75 #define CPROC_NEXT_OFFSET 0
76 #define CPROC_NEXT_SIZE (TARGET_PTR_BIT / HOST_CHAR_BIT)
77 #define CPROC_INCARNATION_OFFSET (CPROC_NEXT_OFFSET + CPROC_NEXT_SIZE)
78 #define CPROC_INCARNATION_SIZE (sizeof (cthread_t))
79 #define CPROC_LIST_OFFSET (CPROC_INCARNATION_OFFSET + CPROC_INCARNATION_SIZE)
80 #define CPROC_LIST_SIZE (TARGET_PTR_BIT / HOST_CHAR_BIT)
81 #define CPROC_WAIT_OFFSET (CPROC_LIST_OFFSET + CPROC_LIST_SIZE)
82 #define CPROC_WAIT_SIZE (TARGET_PTR_BIT / HOST_CHAR_BIT)
83 #define CPROC_REPLY_OFFSET (CPROC_WAIT_OFFSET + CPROC_WAIT_SIZE)
84 #define CPROC_REPLY_SIZE (sizeof (mach_port_t))
85 #define CPROC_CONTEXT_OFFSET (CPROC_REPLY_OFFSET + CPROC_REPLY_SIZE)
86 #define CPROC_CONTEXT_SIZE (TARGET_INT_BIT / HOST_CHAR_BIT)
87 #define CPROC_LOCK_OFFSET (CPROC_CONTEXT_OFFSET + CPROC_CONTEXT_SIZE)
88 #define CPROC_LOCK_SIZE (sizeof (spin_lock_t))
89 #define CPROC_STATE_OFFSET (CPROC_LOCK_OFFSET + CPROC_LOCK_SIZE)
90 #define CPROC_STATE_SIZE (TARGET_INT_BIT / HOST_CHAR_BIT)
91 #define CPROC_WIRED_OFFSET (CPROC_STATE_OFFSET + CPROC_STATE_SIZE)
92 #define CPROC_WIRED_SIZE (sizeof (mach_port_t))
93 #define CPROC_BUSY_OFFSET (CPROC_WIRED_OFFSET + CPROC_WIRED_SIZE)
94 #define CPROC_BUSY_SIZE (TARGET_INT_BIT / HOST_CHAR_BIT)
95 #define CPROC_MSG_OFFSET (CPROC_BUSY_OFFSET + CPROC_BUSY_SIZE)
96 #define CPROC_MSG_SIZE (sizeof (mach_msg_header_t))
97 #define CPROC_BASE_OFFSET (CPROC_MSG_OFFSET + CPROC_MSG_SIZE)
98 #define CPROC_BASE_SIZE (TARGET_INT_BIT / HOST_CHAR_BIT)
99 #define CPROC_SIZE_OFFSET (CPROC_BASE_OFFSET + CPROC_BASE_SIZE)
100 #define CPROC_SIZE_SIZE (TARGET_INT_BIT / HOST_CHAR_BIT)
101 #define CPROC_SIZE (CPROC_SIZE_OFFSET + CPROC_SIZE_SIZE)
103 /* Values for the state field in the cproc. */
104 #define CPROC_RUNNING 0
105 #define CPROC_SWITCHING 1
106 #define CPROC_BLOCKED 2
107 #define CPROC_CONDWAIT 4
109 /* For cproc and kernel thread mapping */
110 typedef struct gdb_thread
{
115 boolean_t in_emulator
;
118 /* This is for the mthreads list. It points to the cproc list.
119 Perhaps the two lists should be merged (or perhaps it was a mistake
120 to make them both use a struct gdb_thread). */
121 struct gdb_thread
*cproc
;
123 /* These are for the cproc list, which is linked through the next field
124 of the struct gdb_thread. */
125 char raw_cproc
[CPROC_SIZE
];
126 /* The cthread which is pointed to by the incarnation field from the
127 cproc. This points to the copy we've read into GDB. */
129 /* Point back to the mthreads list. */
131 struct gdb_thread
*next
;
135 * Actions for Mach exceptions.
137 * sigmap field maps the exception to corresponding Unix signal.
139 * I do not know how to map the exception to unix signal
140 * if SIG_UNKNOWN is specified.
143 struct exception_list
{
148 } exception_map
[] = {
149 {"not_mach3_exception", FALSE
, TRUE
, SIG_UNKNOWN
},
150 {"EXC_BAD_ACCESS", FALSE
, TRUE
, SIGSEGV
},
151 {"EXC_BAD_INSTRUCTION", FALSE
, TRUE
, SIGILL
},
152 {"EXC_ARITHMETIC", FALSE
, TRUE
, SIGFPE
},
153 {"EXC_EMULATION", FALSE
, TRUE
, SIGEMT
}, /* ??? */
154 {"EXC_SOFTWARE", FALSE
, TRUE
, SIG_UNKNOWN
},
155 {"EXC_BREAKPOINT", FALSE
, FALSE
, SIGTRAP
}
158 /* Mach exception table size */
159 int max_exception
= sizeof(exception_map
)/sizeof(struct exception_list
) - 1;
161 #define MAX_EXCEPTION max_exception
163 WAITTYPE wait_status
;
165 /* If you define this, intercepted bsd server calls will be
166 * dumped while waiting the inferior to EXEC the correct
169 /* #define DUMP_SYSCALL /* debugging interceptor */
171 /* xx_debug() outputs messages if this is nonzero.
172 * If > 1, DUMP_SYSCALL will dump message contents.
176 /* "Temporary" debug stuff */
178 xx_debug (fmt
, a
,b
,c
)
183 warning (fmt
, a
, b
, c
);
186 /* This is in libmach.a */
187 extern mach_port_t name_server_port
;
189 /* Set in catch_exception_raise */
190 int stop_exception
, stop_code
, stop_subcode
;
191 int stopped_in_exception
;
193 /* Thread that was the active thread when we stopped */
194 thread_t stop_thread
= MACH_PORT_NULL
;
198 /* Set when task is attached or created */
199 boolean_t emulator_present
= FALSE
;
201 task_t inferior_task
;
202 thread_t current_thread
;
204 /* Exception ports for inferior task */
205 mach_port_t inferior_exception_port
= MACH_PORT_NULL
;
206 mach_port_t inferior_old_exception_port
= MACH_PORT_NULL
;
208 /* task exceptions and notifications */
209 mach_port_t inferior_wait_port_set
= MACH_PORT_NULL
;
210 mach_port_t our_notify_port
= MACH_PORT_NULL
;
212 /* This is "inferior_wait_port_set" when not single stepping, and
213 * "singlestepped_thread_port" when we are single stepping.
215 * This is protected by a cleanup function: discard_single_step()
217 mach_port_t currently_waiting_for
= MACH_PORT_NULL
;
219 /* A port for external messages to gdb.
220 * External in the meaning that they do not come
221 * from the inferior_task, but rather from external
224 * As a debugging feature:
225 * A debugger debugging another debugger can stop the
226 * inferior debugger by the following command sequence
227 * (without running external programs)
229 * (top-gdb) set stop_inferior_gdb ()
232 mach_port_t our_message_port
= MACH_PORT_NULL
;
234 /* For single stepping */
235 mach_port_t thread_exception_port
= MACH_PORT_NULL
;
236 mach_port_t thread_saved_exception_port
= MACH_PORT_NULL
;
237 mach_port_t singlestepped_thread_port
= MACH_PORT_NULL
;
239 /* For machid calls */
240 mach_port_t mid_server
= MACH_PORT_NULL
;
241 mach_port_t mid_auth
= MACH_PORT_NULL
;
243 /* If gdb thinks the inferior task is not suspended, it
244 * must take suspend/abort the threads when it reads the state.
246 int must_suspend_thread
= 0;
248 /* When single stepping, we switch the port that mach_really_wait() listens to.
249 * This cleanup is a guard to prevent the port set from being left to
250 * the singlestepped_thread_port when error() is called.
251 * This is nonzero only when we are single stepping.
253 #define NULL_CLEANUP (struct cleanup *)0
254 struct cleanup
*cleanup_step
= NULL_CLEANUP
;
258 #define MACH_TYPE_EXCEPTION_PORT -1
261 /* Chain of ports to remember requested notifications. */
264 struct port_chain
*next
;
267 int mid
; /* Now only valid with MACH_TYPE_THREAD and */
268 /* MACH_TYPE_THREAD */
270 typedef struct port_chain
*port_chain_t
;
272 /* Room for chain nodes comes from pchain_obstack */
273 struct obstack pchain_obstack
;
274 struct obstack
*port_chain_obstack
= &pchain_obstack
;
276 /* For thread handling */
277 struct obstack Cproc_obstack
;
278 struct obstack
*cproc_obstack
= &Cproc_obstack
;
280 /* the list of notified ports */
281 port_chain_t notify_chain
= (port_chain_t
) NULL
;
284 port_chain_insert (list
, name
, type
)
293 if (! MACH_PORT_VALID (name
))
296 if (type
== MACH_TYPE_TASK
|| type
== MACH_TYPE_THREAD
)
298 if (! MACH_PORT_VALID (mid_server
))
300 warning ("Machid server port invalid, can not map port 0x%x to MID",
306 ret
= machid_mach_register (mid_server
, mid_auth
, name
, type
, &mid
);
308 if (ret
!= KERN_SUCCESS
)
310 warning ("Can not map name (0x%x) to MID with machid", name
);
316 mid
= 3735928559; /* 0x? :-) */
318 new = (port_chain_t
) obstack_alloc (port_chain_obstack
,
319 sizeof (struct port_chain
));
329 port_chain_delete (list
, elem
)
334 if (list
->port
== elem
)
339 if (list
->next
->port
== elem
)
340 list
->next
= list
->next
->next
; /* GCd with obstack_free() */
348 port_chain_destroy (ostack
)
349 struct obstack
*ostack
;
351 obstack_free (ostack
, 0);
352 obstack_init (ostack
);
356 port_chain_member (list
, elem
)
362 if (list
->port
== elem
)
366 return (port_chain_t
) NULL
;
370 map_port_name_to_mid (name
, type
)
376 if (!MACH_PORT_VALID (name
))
379 elem
= port_chain_member (notify_chain
, name
);
381 if (elem
&& (elem
->type
== type
))
387 if (! MACH_PORT_VALID (mid_server
))
389 warning ("Machid server port invalid, can not map port 0x%x to mid",
398 ret
= machid_mach_register (mid_server
, mid_auth
, name
, type
, &mid
);
400 if (ret
!= KERN_SUCCESS
)
402 warning ("Can not map name (0x%x) to mid with machid", name
);
409 /* Guard for currently_waiting_for and singlestepped_thread_port */
411 discard_single_step (thread
)
414 currently_waiting_for
= inferior_wait_port_set
;
416 cleanup_step
= NULL_CLEANUP
;
417 if (MACH_PORT_VALID (thread
) && MACH_PORT_VALID (singlestepped_thread_port
))
418 setup_single_step (thread
, FALSE
);
421 setup_single_step (thread
, start_step
)
423 boolean_t start_step
;
427 if (! MACH_PORT_VALID (thread
))
428 error ("Invalid thread supplied to setup_single_step");
433 /* Get the current thread exception port */
434 ret
= thread_get_exception_port (thread
, &teport
);
435 CHK ("Getting thread's exception port", ret
);
439 if (MACH_PORT_VALID (singlestepped_thread_port
))
441 warning ("Singlestepped_thread_port (0x%x) is still valid?",
442 singlestepped_thread_port
);
443 singlestepped_thread_port
= MACH_PORT_NULL
;
446 /* If we are already stepping this thread */
447 if (MACH_PORT_VALID (teport
) && teport
== thread_exception_port
)
449 ret
= mach_port_deallocate (mach_task_self (), teport
);
450 CHK ("Could not deallocate thread exception port", ret
);
454 ret
= thread_set_exception_port (thread
, thread_exception_port
);
455 CHK ("Setting exception port for thread", ret
);
457 /* Insert thread exception port to wait port set */
458 ret
= mach_port_move_member (mach_task_self(),
459 thread_exception_port
,
460 inferior_wait_port_set
);
461 CHK ("Moving thread exception port to inferior_wait_port_set",
464 thread_saved_exception_port
= teport
;
467 thread_trace (thread
, TRUE
);
469 singlestepped_thread_port
= thread_exception_port
;
470 currently_waiting_for
= singlestepped_thread_port
;
471 cleanup_step
= make_cleanup (discard_single_step
, thread
);
475 if (! MACH_PORT_VALID (teport
))
476 error ("Single stepped thread had an invalid exception port?");
478 if (teport
!= thread_exception_port
)
479 error ("Single stepped thread had an unknown exception port?");
481 ret
= mach_port_deallocate (mach_task_self (), teport
);
482 CHK ("Couldn't deallocate thread exception port", ret
);
484 /* Remove thread exception port from wait port set */
485 ret
= mach_port_move_member (mach_task_self(),
486 thread_exception_port
,
488 CHK ("Removing thread exception port from inferior_wait_port_set",
491 /* Restore thread's old exception port */
492 ret
= thread_set_exception_port (thread
,
493 thread_saved_exception_port
);
494 CHK ("Restoring stepped thread's exception port", ret
);
496 if (MACH_PORT_VALID (thread_saved_exception_port
))
497 (void) mach_port_deallocate (mach_task_self (),
498 thread_saved_exception_port
);
500 thread_trace (thread
, FALSE
);
502 singlestepped_thread_port
= MACH_PORT_NULL
;
503 currently_waiting_for
= inferior_wait_port_set
;
505 discard_cleanups (cleanup_step
);
511 request_notify (name
, variant
, type
)
513 mach_msg_id_t variant
;
517 mach_port_t previous_port_dummy
= MACH_PORT_NULL
;
519 if (! MACH_PORT_VALID (name
))
522 if (port_chain_member (notify_chain
, name
))
525 ret
= mach_port_request_notification (mach_task_self(),
530 MACH_MSG_TYPE_MAKE_SEND_ONCE
,
531 &previous_port_dummy
);
532 CHK ("Serious: request_notify failed", ret
);
534 (void) mach_port_deallocate (mach_task_self (),
535 previous_port_dummy
);
537 notify_chain
= port_chain_insert (notify_chain
, name
, type
);
540 reverse_msg_bits(msgp
, type
)
541 mach_msg_header_t
*msgp
;
545 rbits
= MACH_MSGH_BITS_REMOTE(msgp
->msgh_bits
);
548 (msgp
->msgh_bits
& ~MACH_MSGH_BITS_PORTS_MASK
) |
549 MACH_MSGH_BITS(lbits
,rbits
);
552 /* On the third day He said:
555 and then it was global.
557 When creating the inferior fork, the
558 child code in inflow.c sets the name of the
559 bootstrap_port in its address space to this
562 The name is transferred to our address space
563 with mach3_read_inferior().
565 Thou shalt not do this with
566 task_get_bootstrap_port() in this task, since
567 the name in the inferior task is different than
570 For blessed are the meek, as they shall inherit
573 mach_port_t original_server_port_name
= MACH_PORT_NULL
;
576 /* Called from inferior after FORK but before EXEC */
582 /* Get the NAME of the bootstrap port in this task
583 so that GDB can read it */
584 ret
= task_get_bootstrap_port (mach_task_self (),
585 &original_server_port_name
);
586 if (ret
!= KERN_SUCCESS
)
588 ret
= mach_port_deallocate (mach_task_self (),
589 original_server_port_name
);
590 if (ret
!= KERN_SUCCESS
)
593 /* Suspend this task to let the parent change my ports.
594 Resumed by the debugger */
595 ret
= task_suspend (mach_task_self ());
596 if (ret
!= KERN_SUCCESS
)
601 * Intercept system calls to Unix server.
602 * After EXEC_COUNTER calls to exec(), return.
604 * Pre-assertion: Child is suspended. (Not verified)
605 * Post-condition: Child is suspended after EXEC_COUNTER exec() calls.
609 intercept_exec_calls (exec_counter
)
612 struct syscall_msg_t
{
613 mach_msg_header_t header
;
614 mach_msg_type_t type
;
615 char room
[ 2000 ]; /* Enuff space */
618 struct syscall_msg_t syscall_in
, syscall_out
;
620 mach_port_t fake_server
;
621 mach_port_t original_server_send
;
622 mach_port_t original_exec_reply
;
623 mach_port_t exec_reply
;
624 mach_port_t exec_reply_send
;
625 mach_msg_type_name_t acquired
;
626 mach_port_t emulator_server_port_name
;
627 struct task_basic_info info
;
628 mach_msg_type_number_t info_count
;
632 if (exec_counter
<= 0)
633 return; /* We are already set up in the correct program */
635 ret
= mach_port_allocate(mach_task_self(),
636 MACH_PORT_RIGHT_RECEIVE
,
638 CHK("create inferior_fake_server port failed", ret
);
640 /* Wait for inferior_task to suspend itself */
643 info_count
= sizeof (info
);
644 ret
= task_info (inferior_task
,
648 CHK ("Task info", ret
);
650 if (info
.suspend_count
)
653 /* Note that the definition of the parameter was undefined
654 * at the time of this writing, so I just use an `ad hoc' value.
656 (void) swtch_pri (42); /* Universal Priority Value */
659 /* Read the inferior's bootstrap port name */
660 if (!mach3_read_inferior (&original_server_port_name
,
661 &original_server_port_name
,
662 sizeof (original_server_port_name
)))
663 error ("Can't read inferior task bootstrap port name");
665 /* @@ BUG: If more than 1 send right GDB will FAIL!!! */
666 /* Should get refs, and set them back when restoring */
667 /* Steal the original bsd server send right from inferior */
668 ret
= mach_port_extract_right (inferior_task
,
669 original_server_port_name
,
670 MACH_MSG_TYPE_MOVE_SEND
,
671 &original_server_send
,
673 CHK("mach_port_extract_right (bsd server send)",ret
);
675 if (acquired
!= MACH_MSG_TYPE_PORT_SEND
)
676 error("Incorrect right extracted, send right to bsd server excpected");
678 ret
= mach_port_insert_right (inferior_task
,
679 original_server_port_name
,
681 MACH_MSG_TYPE_MAKE_SEND
);
682 CHK("mach_port_insert_right (fake server send)",ret
);
684 xx_debug ("inferior task bsd server ports set up \nfs %x, ospn %x, oss %x\n",
686 original_server_port_name
, original_server_send
);
688 /* A receive right to the reply generated by unix server exec() request */
689 ret
= mach_port_allocate(mach_task_self(),
690 MACH_PORT_RIGHT_RECEIVE
,
692 CHK("create intercepted_reply_port port failed", ret
);
694 /* Pass this send right to Unix server so it replies to us after exec() */
695 ret
= mach_port_extract_right (mach_task_self (),
697 MACH_MSG_TYPE_MAKE_SEND_ONCE
,
700 CHK("mach_port_extract_right (exec_reply)",ret
);
702 if (acquired
!= MACH_MSG_TYPE_PORT_SEND_ONCE
)
703 error("Incorrect right extracted, send once excpected for exec reply");
705 ret
= mach_port_move_member(mach_task_self(),
707 inferior_wait_port_set
);
708 CHK ("Moving fake syscall port to inferior_wait_port_set", ret
);
710 xx_debug ("syscall fake server set up, resuming inferior\n");
712 ret
= task_resume (inferior_task
);
713 CHK("task_resume (startup)", ret
);
715 /* Read requests from the inferior.
716 Pass directly through everything else except exec() calls.
718 while(exec_counter
> 0)
720 ret
= mach_msg (&syscall_in
.header
, /* header */
721 MACH_RCV_MSG
, /* options */
723 sizeof (struct syscall_msg_t
), /* receive size */
724 inferior_wait_port_set
, /* receive_name */
725 MACH_MSG_TIMEOUT_NONE
,
727 CHK("mach_msg (intercepted sycall)", ret
);
730 print_msg (&syscall_in
.header
);
733 /* ASSERT : msgh_local_port == fake_server */
735 if (notify_server (&syscall_in
.header
, &syscall_out
.header
))
736 error ("received a notify while intercepting syscalls");
738 if (syscall_in
.header
.msgh_id
== MIG_EXEC_SYSCALL_ID
)
740 xx_debug ("Received EXEC SYSCALL, counter = %d\n", exec_counter
);
741 if (exec_counter
== 1)
743 original_exec_reply
= syscall_in
.header
.msgh_remote_port
;
744 syscall_in
.header
.msgh_remote_port
= exec_reply_send
;
749 syscall_in
.header
.msgh_local_port
= syscall_in
.header
.msgh_remote_port
;
750 syscall_in
.header
.msgh_remote_port
= original_server_send
;
752 reverse_msg_bits(&syscall_in
.header
, MACH_MSG_TYPE_COPY_SEND
);
754 ret
= mach_msg_send (&syscall_in
.header
);
755 CHK ("Forwarded syscall", ret
);
758 ret
= mach_port_move_member(mach_task_self(),
761 CHK ("Moving fake syscall out of inferior_wait_port_set", ret
);
763 ret
= mach_port_move_member(mach_task_self(),
765 inferior_wait_port_set
);
766 CHK ("Moving exec_reply to inferior_wait_port_set", ret
);
768 ret
= mach_msg (&syscall_in
.header
, /* header */
769 MACH_RCV_MSG
, /* options */
771 sizeof (struct syscall_msg_t
), /* receive size */
772 inferior_wait_port_set
, /* receive_name */
773 MACH_MSG_TIMEOUT_NONE
,
775 CHK("mach_msg (exec reply)", ret
);
777 ret
= task_suspend (inferior_task
);
778 CHK ("Suspending inferior after last exec", ret
);
780 must_suspend_thread
= 0;
782 xx_debug ("Received exec reply from bsd server, suspended inferior task\n");
785 print_msg (&syscall_in
.header
);
788 /* Message should appear as if it came from the unix server */
789 syscall_in
.header
.msgh_local_port
= MACH_PORT_NULL
;
791 /* and go to the inferior task original reply port */
792 syscall_in
.header
.msgh_remote_port
= original_exec_reply
;
794 reverse_msg_bits(&syscall_in
.header
, MACH_MSG_TYPE_MOVE_SEND_ONCE
);
796 ret
= mach_msg_send (&syscall_in
.header
);
797 CHK ("Forwarding exec reply to inferior", ret
);
799 /* Garbage collect */
800 ret
= mach_port_deallocate (inferior_task
,
801 original_server_port_name
);
802 CHK ("deallocating fake server send right", ret
);
804 ret
= mach_port_insert_right (inferior_task
,
805 original_server_port_name
,
806 original_server_send
,
807 MACH_MSG_TYPE_MOVE_SEND
);
808 CHK ("Restoring the original bsd server send right", ret
);
810 ret
= mach_port_destroy (mach_task_self (),
812 fake_server
= MACH_PORT_DEAD
;
813 CHK("mach_port_destroy (fake_server)", ret
);
815 ret
= mach_port_destroy (mach_task_self (),
817 exec_reply
= MACH_PORT_DEAD
;
818 CHK("mach_port_destroy (exec_reply)", ret
);
820 xx_debug ("Done with exec call interception\n");
824 consume_send_rights (thread_list
, thread_count
)
825 thread_array_t thread_list
;
833 for (index
= 0; index
< thread_count
; index
++)
835 /* Since thread kill command kills threads, don't check ret */
836 (void) mach_port_deallocate (mach_task_self (),
837 thread_list
[ index
]);
841 /* suspend/abort/resume a thread. */
842 setup_thread (thread
, what
)
850 ret
= thread_suspend (thread
);
851 CHK ("setup_thread thread_suspend", ret
);
853 ret
= thread_abort (thread
);
854 CHK ("setup_thread thread_abort", ret
);
858 ret
= thread_resume (thread
);
859 CHK ("setup_thread thread_resume", ret
);
864 map_slot_to_mid (slot
, threads
, thread_count
)
866 thread_array_t threads
;
877 ret
= task_threads (inferior_task
, &threads
, &thread_count
);
878 CHK ("Can not select a thread from a dead task", ret
);
881 if (slot
< 0 || slot
>= thread_count
)
885 consume_send_rights (threads
, thread_count
);
886 (void) vm_deallocate (mach_task_self(), (vm_address_t
)threads
,
887 (thread_count
* sizeof(mach_port_t
)));
890 error ("invalid slot number");
895 mid
= map_port_name_to_mid (threads
[slot
], MACH_TYPE_THREAD
);
899 consume_send_rights (threads
, thread_count
);
900 (void) vm_deallocate (mach_task_self(), (vm_address_t
)threads
,
901 (thread_count
* sizeof(mach_port_t
)));
908 parse_thread_id (arg
, thread_count
, slots
)
921 while (*arg
&& (*arg
== ' ' || *arg
== '\t'))
927 /* Currently parse MID and @SLOTNUMBER */
932 error ("valid thread mid expected");
940 error ("invalid slot number");
942 /* If you want slot numbers to remain slot numbers, set slots.
944 * Well, since 0 is reserved, return the ordinal number
945 * of the thread rather than the slot number. Awk, this
946 * counts as a kludge.
951 if (thread_count
&& slot
>= thread_count
)
954 mid
= map_slot_to_mid (slot
);
959 /* THREAD_ID 0 is special; it selects the first kernel
960 * thread from the list (i.e. SLOTNUMBER 0)
961 * This is used when starting the program with 'run' or when attaching.
963 * If FLAG is 0 the context is not changed, and the registers, frame, etc
964 * will continue to describe the old thread.
966 * If FLAG is nonzero, really select the thread.
967 * If FLAG is 2, the THREAD_ID is a slotnumber instead of a mid.
971 select_thread (task
, thread_id
, flag
)
976 thread_array_t thread_list
;
980 thread_t new_thread
= MACH_PORT_NULL
;
983 error ("Can't select cprocs without kernel thread");
985 ret
= task_threads (task
, &thread_list
, &thread_count
);
986 if (ret
!= KERN_SUCCESS
)
988 warning ("Can not select a thread from a dead task");
993 if (thread_count
== 0)
995 /* The task can not do anything anymore, but it still
996 * exists as a container for memory and ports.
998 registers_changed ();
999 warning ("Task %d has no threads",
1000 map_port_name_to_mid (task
, MACH_TYPE_TASK
));
1001 current_thread
= MACH_PORT_NULL
;
1002 (void) vm_deallocate(mach_task_self(),
1003 (vm_address_t
) thread_list
,
1004 (thread_count
* sizeof(mach_port_t
)));
1005 return KERN_FAILURE
;
1008 if (! thread_id
|| flag
== 2)
1010 /* First thread or a slotnumber */
1012 new_thread
= thread_list
[0];
1015 if (thread_id
< thread_count
)
1016 new_thread
= thread_list
[ thread_id
];
1019 (void) vm_deallocate(mach_task_self(),
1020 (vm_address_t
) thread_list
,
1021 (thread_count
* sizeof(mach_port_t
)));
1022 error ("No such thread slot number : %d", thread_id
);
1028 for (index
= 0; index
< thread_count
; index
++)
1029 if (thread_id
== map_port_name_to_mid (thread_list
[index
],
1032 new_thread
= thread_list
[index
];
1038 error ("No thread with mid %d", thread_id
);
1041 /* Notify when the selected thread dies */
1042 request_notify (new_thread
, MACH_NOTIFY_DEAD_NAME
, MACH_TYPE_THREAD
);
1044 ret
= vm_deallocate(mach_task_self(),
1045 (vm_address_t
) thread_list
,
1046 (thread_count
* sizeof(mach_port_t
)));
1047 CHK ("vm_deallocate", ret
);
1050 current_thread
= new_thread
;
1054 if (MACH_PORT_VALID (current_thread
))
1056 /* Store the gdb's view of the thread we are deselecting
1058 * @@ I think gdb updates registers immediately when they are
1059 * changed, so don't do this.
1061 ret
= thread_abort (current_thread
);
1062 CHK ("Could not abort system calls when saving state of old thread",
1064 target_prepare_to_store ();
1065 target_store_registers (-1);
1069 registers_changed ();
1071 current_thread
= new_thread
;
1073 ret
= thread_abort (current_thread
);
1074 CHK ("Could not abort system calls when selecting a thread", ret
);
1076 stop_pc
= read_pc();
1077 set_current_frame (create_new_frame (read_register (FP_REGNUM
),
1080 select_frame (get_current_frame (), 0);
1082 stop_frame_address
= FRAME_FP (get_current_frame ());
1085 return KERN_SUCCESS
;
1089 * Switch to use thread named NEW_THREAD.
1093 switch_to_thread (new_thread
)
1094 thread_t new_thread
;
1096 thread_t saved_thread
= current_thread
;
1099 mid
= map_port_name_to_mid (new_thread
,
1102 warning ("Can't map thread name 0x%x to mid", new_thread
);
1103 else if (select_thread (inferior_task
, mid
, 1) != KERN_SUCCESS
)
1106 current_thread
= saved_thread
;
1107 error ("Could not select thread %d", mid
);
1113 /* Do this in gdb after doing FORK but before STARTUP_INFERIOR.
1114 * Note that the registers are not yet valid in the inferior task.
1122 inferior_task
= task_by_pid (pid
);
1124 if (! MACH_PORT_VALID (inferior_task
))
1125 error ("Can not map Unix pid %d to Mach task", pid
);
1127 /* Clean up previous notifications and create new ones */
1128 setup_notify_port (1);
1130 /* When notification appears, the inferior task has died */
1131 request_notify (inferior_task
, MACH_NOTIFY_DEAD_NAME
, MACH_TYPE_TASK
);
1133 emulator_present
= have_emulator_p (inferior_task
);
1135 /* By default, select the first thread,
1136 * If task has no threads, gives a warning
1137 * Does not fetch registers, since they are not yet valid.
1139 select_thread (inferior_task
, 0, 0);
1141 inferior_exception_port
= MACH_PORT_NULL
;
1143 setup_exception_port ();
1145 xx_debug ("Now the debugged task is created\n");
1147 /* One trap to exec the shell, one to exec the program being debugged. */
1148 intercept_exec_calls (2);
1151 setup_exception_port ()
1155 ret
= mach_port_allocate (mach_task_self(),
1156 MACH_PORT_RIGHT_RECEIVE
,
1157 &inferior_exception_port
);
1158 CHK("mach_port_allocate",ret
);
1160 /* add send right */
1161 ret
= mach_port_insert_right (mach_task_self (),
1162 inferior_exception_port
,
1163 inferior_exception_port
,
1164 MACH_MSG_TYPE_MAKE_SEND
);
1165 CHK("mach_port_insert_right",ret
);
1167 ret
= mach_port_move_member (mach_task_self(),
1168 inferior_exception_port
,
1169 inferior_wait_port_set
);
1170 CHK("mach_port_move_member",ret
);
1172 ret
= task_get_special_port (inferior_task
,
1173 TASK_EXCEPTION_PORT
,
1174 &inferior_old_exception_port
);
1175 CHK ("task_get_special_port(old exc)",ret
);
1177 ret
= task_set_special_port (inferior_task
,
1178 TASK_EXCEPTION_PORT
,
1179 inferior_exception_port
);
1180 CHK("task_set_special_port",ret
);
1182 ret
= mach_port_deallocate (mach_task_self (),
1183 inferior_exception_port
);
1184 CHK("mack_port_deallocate",ret
);
1187 /* When notify appears, the inferior_task's exception
1188 * port has been destroyed.
1190 * Not used, since the dead_name_notification already
1191 * appears when task dies.
1194 request_notify (inferior_exception_port
,
1195 MACH_NOTIFY_NO_SENDERS
,
1196 MACH_TYPE_EXCEPTION_PORT
);
1200 /* Nonzero if gdb is waiting for a message */
1201 int mach_really_waiting
;
1203 /* Wait for the inferior to stop for some reason.
1204 - Loop on notifications until inferior_task dies.
1205 - Loop on exceptions until stopped_in_exception comes true.
1206 (e.g. we receive a single step trace trap)
1207 - a message arrives to gdb's message port
1209 There is no other way to exit this loop.
1211 Returns the inferior_pid for rest of gdb.
1212 Side effects: Set unix exit value to *w.
1215 mach_really_wait (w
)
1222 mach_msg_header_t header
;
1223 mach_msg_type_t foo
;
1227 /* Either notify (death), exception or message can stop the inferior */
1228 stopped_in_exception
= FALSE
;
1234 stop_exception
= stop_code
= stop_subcode
= -1;
1235 stop_thread
= MACH_PORT_NULL
;
1237 mach_really_waiting
= 1;
1238 ret
= mach_msg (&in_msg
.header
, /* header */
1239 MACH_RCV_MSG
, /* options */
1241 sizeof (struct msg
), /* receive size */
1242 currently_waiting_for
, /* receive name */
1243 MACH_MSG_TIMEOUT_NONE
,
1245 mach_really_waiting
= 0;
1246 CHK("mach_msg (receive)", ret
);
1248 /* Check if we received a notify of the childs' death */
1249 if (notify_server (&in_msg
.header
, &out_msg
.header
))
1251 /* If inferior_task is null then the inferior has
1252 gone away and we want to return to command level.
1253 Otherwise it was just an informative message and we
1254 need to look to see if there are any more. */
1255 if (inferior_task
!= MACH_PORT_NULL
)
1259 /* Collect Unix exit status for gdb */
1261 wait3(w
, WNOHANG
, 0);
1263 /* This mess is here to check that the rest of
1264 * gdb knows that the inferior died. It also
1265 * tries to hack around the fact that Mach 3.0 (mk69)
1266 * unix server (ux28) does not always know what
1267 * has happened to it's children when mach-magic
1268 * is applied on them.
1270 if ((!WIFEXITED(*w
) && WIFSTOPPED(*w
)) ||
1271 (WIFEXITED(*w
) && WEXITSTATUS(*w
) > 0377))
1274 warning ("Using exit value 0 for terminated task");
1276 else if (!WIFEXITED(*w
))
1278 int sig
= WTERMSIG(*w
);
1280 /* Signals cause problems. Warn the user. */
1281 if (sig
!= SIGKILL
) /* Bad luck if garbage matches this */
1282 warning ("The terminating signal stuff may be nonsense");
1283 else if (sig
> NSIG
)
1286 warning ("Using exit value 0 for terminated task");
1289 return inferior_pid
;
1293 /* Hmm. Check for exception, as it was not a notification.
1294 exc_server() does an upcall to catch_exception_raise()
1295 if this rpc is an exception. Further actions are decided
1298 if (! exc_server (&in_msg
.header
, &out_msg
.header
))
1301 /* Not an exception, check for message.
1303 * Messages don't come from the inferior, or if they
1304 * do they better be asynchronous or it will hang.
1306 if (gdb_message_server (&in_msg
.header
))
1309 error ("Unrecognized message received in mach_really_wait");
1312 /* Send the reply of the exception rpc to the suspended task */
1313 ret
= mach_msg_send (&out_msg
.header
);
1314 CHK ("mach_msg_send (exc reply)", ret
);
1316 if (stopped_in_exception
)
1318 /* Get unix state. May be changed in mach3_exception_actions() */
1319 wait3(w
, WNOHANG
, 0);
1321 mach3_exception_actions (w
, FALSE
, "Task");
1323 return inferior_pid
;
1328 /* Called by macro DO_QUIT() in utils.c(quit).
1329 * This is called just before calling error() to return to command level
1337 if (mach_really_waiting
)
1339 ret
= task_suspend (inferior_task
);
1341 if (ret
!= KERN_SUCCESS
)
1343 warning ("Could not suspend task for interrupt: %s",
1344 mach_error_string (ret
));
1345 mach_really_waiting
= 0;
1350 must_suspend_thread
= 0;
1351 mach_really_waiting
= 0;
1353 mid
= map_port_name_to_mid (current_thread
, MACH_TYPE_THREAD
);
1356 warning ("Selecting first existing kernel thread");
1360 current_thread
= MACH_PORT_NULL
; /* Force setup */
1361 select_thread (inferior_task
, mid
, 1);
1366 /* If ^C is typed when we are waiting for a message
1367 * and your Unix server is able to notice that we
1370 * Called by REQUEST_QUIT() from utils.c(request_quit)
1373 mach3_request_quit ()
1375 if (mach_really_waiting
)
1380 * Gdb message server.
1381 * Currently implemented is the STOP message, that causes
1382 * gdb to return to the command level like ^C had been typed from terminal.
1385 gdb_message_server (InP
)
1386 mach_msg_header_t
*InP
;
1391 if (InP
->msgh_local_port
== our_message_port
)
1393 /* A message coming to our_message_port. Check validity */
1394 switch (InP
->msgh_id
) {
1396 case GDB_MESSAGE_ID_STOP
:
1397 ret
= task_suspend (inferior_task
);
1398 if (ret
!= KERN_SUCCESS
)
1399 warning ("Could not suspend task for stop message: %s",
1400 mach_error_string (ret
));
1402 /* QUIT in mach_really_wait() loop. */
1407 warning ("Invalid message id %d received, ignored.",
1415 /* Message not handled by this server */
1419 /* NOTE: This is not an RPC call. It is a simpleroutine.
1421 * This is not called from this gdb code.
1423 * It may be called by another debugger to cause this
1424 * debugger to enter command level:
1426 * (gdb) set stop_inferior_gdb ()
1429 * External program "stop-gdb" implements this also.
1432 stop_inferior_gdb ()
1436 /* Code generated by mig, with minor cleanups :-)
1438 * simpleroutine stop_inferior_gdb (our_message_port : mach_port_t);
1442 mach_msg_header_t Head
;
1447 register Request
*InP
= &Mess
;
1449 InP
->Head
.msgh_bits
= MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND
, 0);
1451 /* msgh_size passed as argument */
1452 InP
->Head
.msgh_remote_port
= our_message_port
;
1453 InP
->Head
.msgh_local_port
= MACH_PORT_NULL
;
1454 InP
->Head
.msgh_seqno
= 0;
1455 InP
->Head
.msgh_id
= GDB_MESSAGE_ID_STOP
;
1457 ret
= mach_msg (&InP
->Head
,
1458 MACH_SEND_MSG
|MACH_MSG_OPTION_NONE
,
1462 MACH_MSG_TIMEOUT_NONE
,
1466 #ifdef THREAD_ALLOWED_TO_BREAK
1468 * Return 1 if the MID specifies the thread that caused the
1470 * Since catch_exception_raise() selects the thread causing
1471 * the last exception to current_thread, we just check that
1472 * it is selected and the last exception was a breakpoint.
1475 mach_thread_for_breakpoint (mid
)
1478 int cmid
= map_port_name_to_mid (current_thread
, MACH_TYPE_THREAD
);
1482 mid
= map_slot_to_mid (-(mid
+1), 0, 0);
1484 return 0; /* Don't stop, no such slot */
1487 if (! mid
|| cmid
== -1)
1488 return 1; /* stop */
1490 return cmid
== mid
&& stop_exception
== EXC_BREAKPOINT
;
1492 #endif /* THREAD_ALLOWED_TO_BREAK */
1494 #ifdef THREAD_PARSE_ID
1496 * Map a thread id string (MID or a @SLOTNUMBER)
1499 * 0 matches all threads.
1500 * Otherwise the meaning is defined only in this file.
1501 * (mach_thread_for_breakpoint uses it)
1503 * @@ This allows non-existent MIDs to be specified.
1504 * It now also allows non-existent slots to be
1505 * specified. (Slot numbers stored are negative,
1506 * and the magnitude is one greater than the actual
1507 * slot index. (Since 0 is reserved))
1510 mach_thread_parse_id (arg
)
1515 error ("thread id excpected");
1516 mid
= parse_thread_id (arg
, 0, 1);
1520 #endif /* THREAD_PARSE_ID */
1522 #ifdef THREAD_OUTPUT_ID
1524 mach_thread_output_id (mid
)
1527 static char foobar
[20];
1530 sprintf (foobar
, "mid %d", mid
);
1532 sprintf (foobar
, "@%d", -(mid
+1));
1534 sprintf (foobar
, "*any thread*");
1538 #endif /* THREAD_OUTPUT_ID */
1540 /* Called with hook PREPARE_TO_PROCEED() from infrun.c.
1542 * If we have switched threads and stopped at breakpoint return 1 otherwise 0.
1544 * if SELECT_IT is nonzero, reselect the thread that was active when
1545 * we stopped at a breakpoint.
1549 mach3_prepare_to_proceed (select_it
)
1553 stop_thread
!= current_thread
&&
1554 stop_exception
== EXC_BREAKPOINT
)
1561 mid
= switch_to_thread (stop_thread
);
1569 /* this stuff here is an upcall via libmach/excServer.c
1570 and mach_really_wait which does the actual upcall.
1572 The code will pass the exception to the inferior if:
1574 - The task that signaled is not the inferior task
1575 (e.g. when debugging another debugger)
1577 - The user has explicitely requested to pass on the exceptions.
1578 (e.g to the default unix exception handler, which maps
1579 exceptions to signals, or the user has her own exception handler)
1581 - If the thread that signaled is being single-stepped and it
1582 has set it's own exception port and the exception is not
1583 EXC_BREAKPOINT. (Maybe this is not desirable?)
1587 catch_exception_raise (port
, thread
, task
, exception
, code
, subcode
)
1591 int exception
, code
, subcode
;
1594 boolean_t signal_thread
;
1595 int mid
= map_port_name_to_mid (thread
, MACH_TYPE_THREAD
);
1597 if (! MACH_PORT_VALID (thread
))
1599 /* If the exception was sent and thread dies before we
1600 receive it, THREAD will be MACH_PORT_DEAD
1603 current_thread
= thread
= MACH_PORT_NULL
;
1604 error ("Received exception from nonexistent thread");
1607 /* Check if the task died in transit.
1608 * @@ Isn't the thread also invalid in such case?
1610 if (! MACH_PORT_VALID (task
))
1612 current_thread
= thread
= MACH_PORT_NULL
;
1613 error ("Received exception from nonexistent task");
1616 if (exception
< 0 || exception
> MAX_EXCEPTION
)
1617 fatal ("catch_exception_raise: unknown exception code %d thread %d",
1621 if (! MACH_PORT_VALID (inferior_task
))
1622 error ("got an exception, but inferior_task is null or dead");
1624 stop_exception
= exception
;
1626 stop_subcode
= subcode
;
1627 stop_thread
= thread
;
1629 signal_thread
= exception
!= EXC_BREAKPOINT
&&
1630 port
== singlestepped_thread_port
&&
1631 MACH_PORT_VALID (thread_saved_exception_port
);
1633 /* If it was not our inferior or if we want to forward
1634 * the exception to the inferior's handler, do it here
1636 * Note: If you have forwarded EXC_BREAKPOINT I trust you know why.
1638 if (task
!= inferior_task
||
1640 exception_map
[exception
].forward
)
1642 mach_port_t eport
= inferior_old_exception_port
;
1647 GDB now forwards the exeption to thread's original handler,
1648 since the user propably knows what he is doing.
1649 Give a message, though.
1652 mach3_exception_actions ((WAITTYPE
*)NULL
, TRUE
, "Thread");
1653 eport
= thread_saved_exception_port
;
1656 /* Send the exception to the original handler */
1657 ret
= exception_raise (eport
,
1664 (void) mach_port_deallocate (mach_task_self (), task
);
1665 (void) mach_port_deallocate (mach_task_self (), thread
);
1667 /* If we come here, we don't want to trace any more, since we
1668 * will never stop for tracing anyway.
1670 discard_single_step (thread
);
1672 /* Do not stop the inferior */
1676 /* Now gdb handles the exception */
1677 stopped_in_exception
= TRUE
;
1679 ret
= task_suspend (task
);
1680 CHK ("Error suspending inferior after exception", ret
);
1682 must_suspend_thread
= 0;
1684 if (current_thread
!= thread
)
1686 if (MACH_PORT_VALID (singlestepped_thread_port
))
1687 /* Cleanup discards single stepping */
1688 error ("Exception from thread %d while singlestepping thread %d",
1690 map_port_name_to_mid (current_thread
, MACH_TYPE_THREAD
));
1692 /* Then select the thread that caused the exception */
1693 if (select_thread (inferior_task
, mid
, 0) != KERN_SUCCESS
)
1694 error ("Could not select thread %d causing exception", mid
);
1696 warning ("Gdb selected thread %d", mid
);
1699 /* If we receive an exception that is not breakpoint
1700 * exception, we interrupt the single step and return to
1701 * debugger. Trace condition is cleared.
1703 if (MACH_PORT_VALID (singlestepped_thread_port
))
1705 if (stop_exception
!= EXC_BREAKPOINT
)
1706 warning ("Single step interrupted by exception");
1707 else if (port
== singlestepped_thread_port
)
1709 /* Single step exception occurred, remove trace bit
1710 * and return to gdb.
1712 if (! MACH_PORT_VALID (current_thread
))
1713 error ("Single stepped thread is not valid");
1715 /* Resume threads, but leave the task suspended */
1716 resume_all_threads (0);
1719 warning ("Breakpoint while single stepping?");
1721 discard_single_step (current_thread
);
1724 (void) mach_port_deallocate (mach_task_self (), task
);
1725 (void) mach_port_deallocate (mach_task_self (), thread
);
1727 return KERN_SUCCESS
;
1731 port_valid (port
, mask
)
1736 mach_port_type_t type
;
1738 ret
= mach_port_type (mach_task_self (),
1741 if (ret
!= KERN_SUCCESS
|| (type
& mask
) != mask
)
1746 /* @@ No vm read cache implemented yet */
1747 boolean_t vm_read_cache_valid
= FALSE
;
1750 * Read inferior task's LEN bytes from ADDR and copy it to MYADDR
1751 * in gdb's address space.
1753 * Return 0 on failure; number of bytes read otherwise.
1756 mach3_read_inferior (addr
, myaddr
, length
)
1762 vm_address_t low_address
= (vm_address_t
) trunc_page (addr
);
1763 vm_size_t aligned_length
=
1764 (vm_size_t
) round_page (addr
+length
) - low_address
;
1765 pointer_t copied_memory
;
1768 /* Get memory from inferior with page aligned addresses */
1769 ret
= vm_read (inferior_task
,
1774 if (ret
!= KERN_SUCCESS
)
1776 /* the problem is that the inferior might be killed for whatever reason
1777 * before we go to mach_really_wait. This is one place that ought to
1778 * catch many of those errors.
1779 * @@ A better fix would be to make all external events to GDB
1780 * to arrive via a SINGLE port set. (Including user input!)
1783 if (! port_valid (inferior_task
, MACH_PORT_TYPE_SEND
))
1786 error ("Inferior killed (task port invalid)");
1792 /* valprint.c gives nicer format if this does not
1793 screw it. Eamonn seems to like this, so I enable
1794 it if OSF is defined...
1796 warning ("[read inferior %x failed: %s]",
1797 addr
, mach_error_string (ret
));
1804 memcpy (myaddr
, (char *)addr
- low_address
+ copied_memory
, length
);
1806 ret
= vm_deallocate (mach_task_self (),
1809 CHK("mach3_read_inferior vm_deallocate failed", ret
);
1815 #define CHK_GOTO_OUT(str,ret) \
1816 do if (ret != KERN_SUCCESS) { errstr = #str; goto out; } while(0)
1818 #define CHK_GOTO_OUT(str,ret) \
1819 do if (ret != KERN_SUCCESS) { errstr = str; goto out; } while(0)
1822 struct vm_region_list
{
1823 struct vm_region_list
*next
;
1824 vm_prot_t protection
;
1829 struct obstack region_obstack
;
1832 * Write inferior task's LEN bytes from ADDR and copy it to MYADDR
1833 * in gdb's address space.
1836 mach3_write_inferior (addr
, myaddr
, length
)
1842 vm_address_t low_address
= (vm_address_t
) trunc_page (addr
);
1843 vm_size_t aligned_length
=
1844 (vm_size_t
) round_page (addr
+length
) - low_address
;
1845 pointer_t copied_memory
;
1849 char *errstr
= "Bug in mach3_write_inferior";
1851 struct vm_region_list
*region_element
;
1852 struct vm_region_list
*region_head
= (struct vm_region_list
*)NULL
;
1854 /* Get memory from inferior with page aligned addresses */
1855 ret
= vm_read (inferior_task
,
1860 CHK_GOTO_OUT ("mach3_write_inferior vm_read failed", ret
);
1864 memcpy ((char *)addr
- low_address
+ copied_memory
, myaddr
, length
);
1866 obstack_init (®ion_obstack
);
1868 /* Do writes atomically.
1869 * First check for holes and unwritable memory.
1872 vm_size_t remaining_length
= aligned_length
;
1873 vm_address_t region_address
= low_address
;
1875 struct vm_region_list
*scan
;
1877 while(region_address
< low_address
+ aligned_length
)
1879 vm_prot_t protection
;
1880 vm_prot_t max_protection
;
1881 vm_inherit_t inheritance
;
1883 mach_port_t object_name
;
1885 vm_size_t region_length
= remaining_length
;
1886 vm_address_t old_address
= region_address
;
1888 ret
= vm_region (inferior_task
,
1897 CHK_GOTO_OUT ("vm_region failed", ret
);
1899 /* Check for holes in memory */
1900 if (old_address
!= region_address
)
1902 warning ("No memory at 0x%x. Nothing written",
1909 if (!(max_protection
& VM_PROT_WRITE
))
1911 warning ("Memory at address 0x%x is unwritable. Nothing written",
1918 /* Chain the regions for later use */
1920 (struct vm_region_list
*)
1921 obstack_alloc (®ion_obstack
, sizeof (struct vm_region_list
));
1923 region_element
->protection
= protection
;
1924 region_element
->start
= region_address
;
1925 region_element
->length
= region_length
;
1927 /* Chain the regions along with protections */
1928 region_element
->next
= region_head
;
1929 region_head
= region_element
;
1931 region_address
+= region_length
;
1932 remaining_length
= remaining_length
- region_length
;
1935 /* If things fail after this, we give up.
1936 * Somebody is messing up inferior_task's mappings.
1939 /* Enable writes to the chained vm regions */
1940 for (scan
= region_head
; scan
; scan
= scan
->next
)
1942 boolean_t protection_changed
= FALSE
;
1944 if (!(scan
->protection
& VM_PROT_WRITE
))
1946 ret
= vm_protect (inferior_task
,
1950 scan
->protection
| VM_PROT_WRITE
);
1951 CHK_GOTO_OUT ("vm_protect: enable write failed", ret
);
1955 ret
= vm_write (inferior_task
,
1959 CHK_GOTO_OUT ("vm_write failed", ret
);
1961 /* Set up the original region protections, if they were changed */
1962 for (scan
= region_head
; scan
; scan
= scan
->next
)
1964 boolean_t protection_changed
= FALSE
;
1966 if (!(scan
->protection
& VM_PROT_WRITE
))
1968 ret
= vm_protect (inferior_task
,
1973 CHK_GOTO_OUT ("vm_protect: enable write failed", ret
);
1981 obstack_free (®ion_obstack
, 0);
1983 (void) vm_deallocate (mach_task_self (),
1988 if (ret
!= KERN_SUCCESS
)
1990 warning ("%s %s", errstr
, mach_error_string (ret
));
1997 /* Return 0 on failure, number of bytes handled otherwise. */
1999 m3_xfer_memory (memaddr
, myaddr
, len
, write
, target
)
2004 struct target_ops
*target
; /* IGNORED */
2009 result
= mach3_write_inferior (memaddr
, myaddr
, len
);
2011 result
= mach3_read_inferior (memaddr
, myaddr
, len
);
2018 translate_state(state
)
2022 case TH_STATE_RUNNING
: return("R");
2023 case TH_STATE_STOPPED
: return("S");
2024 case TH_STATE_WAITING
: return("W");
2025 case TH_STATE_UNINTERRUPTIBLE
: return("U");
2026 case TH_STATE_HALTED
: return("H");
2027 default: return("?");
2032 translate_cstate (state
)
2037 case CPROC_RUNNING
: return "R";
2038 case CPROC_SWITCHING
: return "S";
2039 case CPROC_BLOCKED
: return "B";
2040 case CPROC_CONDWAIT
: return "C";
2041 case CPROC_CONDWAIT
|CPROC_SWITCHING
: return "CS";
2042 default: return "?";
2046 /* type == MACH_MSG_TYPE_COPY_SEND || type == MACH_MSG_TYPE_MAKE_SEND */
2048 mach_port_t
/* no mach_port_name_t found in include files. */
2049 map_inferior_port_name (inferior_name
, type
)
2050 mach_port_t inferior_name
;
2051 mach_msg_type_name_t type
;
2054 mach_msg_type_name_t acquired
;
2057 ret
= mach_port_extract_right (inferior_task
,
2062 CHK("mach_port_extract_right (map_inferior_port_name)", ret
);
2064 if (acquired
!= MACH_MSG_TYPE_PORT_SEND
)
2065 error("Incorrect right extracted, (map_inferior_port_name)");
2067 ret
= mach_port_deallocate (mach_task_self (),
2069 CHK ("Deallocating mapped port (map_inferior_port_name)", ret
);
2075 * Naming convention:
2076 * Always return user defined name if found.
2077 * _K == A kernel thread with no matching CPROC
2078 * _C == A cproc with no current cthread
2079 * _t == A cthread with no user defined name
2081 * The digits that follow the _names are the SLOT number of the
2082 * kernel thread if there is such a thing, otherwise just a negation
2083 * of the sequential number of such cprocs.
2089 get_thread_name (one_cproc
, id
)
2090 gdb_thread_t one_cproc
;
2094 if (one_cproc
->cthread
== NULL
)
2096 /* cproc not mapped to any cthread */
2097 sprintf(buf
, "_C%d", id
);
2099 else if (! one_cproc
->cthread
->name
)
2101 /* cproc and cthread, but no name */
2102 sprintf(buf
, "_t%d", id
);
2105 return (one_cproc
->cthread
->name
);
2109 warning ("Inconsistency in thread name id %d", id
);
2111 /* Kernel thread without cproc */
2112 sprintf(buf
, "_K%d", id
);
2119 fetch_thread_info (task
, mthreads_out
)
2121 gdb_thread_t
*mthreads_out
; /* out */
2124 thread_array_t th_table
;
2126 gdb_thread_t mthreads
= NULL
;
2129 ret
= task_threads (task
, &th_table
, &th_count
);
2130 if (ret
!= KERN_SUCCESS
)
2132 warning ("Error getting inferior's thread list:%s",
2133 mach_error_string(ret
));
2138 mthreads
= (gdb_thread_t
)
2141 th_count
* sizeof (struct gdb_thread
));
2143 for (index
= 0; index
< th_count
; index
++)
2145 thread_t saved_thread
= MACH_PORT_NULL
;
2148 if (must_suspend_thread
)
2149 setup_thread (th_table
[ index
], 1);
2151 if (th_table
[index
] != current_thread
)
2153 saved_thread
= current_thread
;
2155 mid
= switch_to_thread (th_table
[ index
]);
2158 mthreads
[index
].name
= th_table
[index
];
2159 mthreads
[index
].cproc
= NULL
; /* map_cprocs_to_kernel_threads() */
2160 mthreads
[index
].in_emulator
= FALSE
;
2161 mthreads
[index
].slotid
= index
;
2163 mthreads
[index
].sp
= read_register (SP_REGNUM
);
2164 mthreads
[index
].fp
= read_register (FP_REGNUM
);
2165 mthreads
[index
].pc
= read_pc ();
2167 if (MACH_PORT_VALID (saved_thread
))
2168 mid
= switch_to_thread (saved_thread
);
2170 if (must_suspend_thread
)
2171 setup_thread (th_table
[ index
], 0);
2174 consume_send_rights (th_table
, th_count
);
2175 ret
= vm_deallocate (mach_task_self(), (vm_address_t
)th_table
,
2176 (th_count
* sizeof(mach_port_t
)));
2177 if (ret
!= KERN_SUCCESS
)
2179 warning ("Error trying to deallocate thread list : %s",
2180 mach_error_string (ret
));
2183 *mthreads_out
= mthreads
;
2190 * Current emulator always saves the USP on top of
2191 * emulator stack below struct emul_stack_top stuff.
2194 fetch_usp_from_emulator_stack (sp
)
2197 CORE_ADDR stack_pointer
;
2199 sp
= (sp
& ~(EMULATOR_STACK_SIZE
-1)) +
2200 EMULATOR_STACK_SIZE
- sizeof (struct emul_stack_top
);
2202 if (mach3_read_inferior (sp
,
2204 sizeof (CORE_ADDR
)) != sizeof (CORE_ADDR
))
2206 warning ("Can't read user sp from emulator stack address 0x%x", sp
);
2210 return stack_pointer
;
2215 /* get_emulation_vector() interface was changed after mk67 */
2216 #define EMUL_VECTOR_COUNT 400 /* Value does not matter too much */
2220 /* Check if the emulator exists at task's address space.
2223 have_emulator_p (task
)
2227 #ifndef EMUL_VECTOR_COUNT
2228 vm_offset_t
*emulation_vector
;
2231 vm_offset_t emulation_vector
[ EMUL_VECTOR_COUNT
];
2232 int n
= EMUL_VECTOR_COUNT
;
2237 ret
= task_get_emulation_vector (task
,
2239 #ifndef EMUL_VECTOR_COUNT
2245 CHK("task_get_emulation_vector", ret
);
2246 xx_debug ("%d vectors from %d at 0x%08x\n",
2247 n
, vector_start
, emulation_vector
);
2249 for(i
= 0; i
< n
; i
++)
2251 vm_offset_t entry
= emulation_vector
[i
];
2253 if (EMULATOR_BASE
<= entry
&& entry
<= EMULATOR_END
)
2257 static boolean_t informed
= FALSE
;
2260 warning("Emulation vector address 0x08%x outside emulator space",
2269 /* Map cprocs to kernel threads and vice versa. */
2272 map_cprocs_to_kernel_threads (cprocs
, mthreads
, thread_count
)
2273 gdb_thread_t cprocs
;
2274 gdb_thread_t mthreads
;
2279 boolean_t all_mapped
= TRUE
;
2281 for (scan
= cprocs
; scan
; scan
= scan
->next
)
2283 /* Default to: no kernel thread for this cproc */
2284 scan
->reverse_map
= -1;
2286 /* Check if the cproc is found by its stack */
2287 for (index
= 0; index
< thread_count
; index
++)
2289 LONGEST stack_base
=
2290 extract_signed_integer (scan
.raw_cproc
+ CPROC_BASE_OFFSET
,
2292 LONGEST stack_size
=
2293 extract_signed_integer (scan
.raw_cproc
+ CPROC_SIZE_OFFSET
,
2295 if ((mthreads
+ index
)->sp
> stack_base
&&
2296 (mthreads
+ index
)->sp
<= stack_base
+ stack_size
)
2298 (mthreads
+ index
)->cproc
= scan
;
2299 scan
->reverse_map
= index
;
2303 all_mapped
&= (scan
->reverse_map
!= -1);
2306 /* Check for threads that are currently in the emulator.
2307 * If so, they have a different stack, and the still unmapped
2308 * cprocs may well get mapped to these threads.
2311 * - cproc stack does not match any kernel thread stack pointer
2312 * - there is at least one extra kernel thread
2313 * that has no cproc mapped above.
2314 * - some kernel thread stack pointer points to emulator space
2315 * then we find the user stack pointer saved in the emulator
2316 * stack, and try to map that to the cprocs.
2318 * Also set in_emulator for kernel threads.
2321 if (emulator_present
)
2323 for (index
= 0; index
< thread_count
; index
++)
2328 gdb_thread_t mthread
= (mthreads
+index
);
2329 emul_sp
= mthread
->sp
;
2331 if (mthread
->cproc
== NULL
&&
2332 EMULATOR_BASE
<= emul_sp
&& emul_sp
<= EMULATOR_END
)
2334 mthread
->in_emulator
= emulator_present
;
2336 if (!all_mapped
&& cprocs
)
2338 usp
= fetch_usp_from_emulator_stack (emul_sp
);
2340 /* @@ Could be more accurate */
2342 error ("Zero stack pointer read from emulator?");
2344 /* Try to match this stack pointer to the cprocs that
2345 * don't yet have a kernel thread.
2347 for (scan
= cprocs
; scan
; scan
= scan
->next
)
2350 /* Check is this unmapped CPROC stack contains
2351 * the user stack pointer saved in the
2354 if (scan
->reverse_map
== -1 &&
2355 usp
> scan
->stack_base
&&
2356 usp
<= scan
->stack_base
+ scan
->stack_size
)
2358 mthread
->cproc
= scan
;
2359 scan
->reverse_map
= index
;
2370 * Format of the thread_list command
2372 * slot mid sel name emul ks susp cstate wired address
2374 #define TL_FORMAT "%-2.2s %5d%c %-10.10s %1.1s%s%-5.5s %-2.2s %-5.5s "
2376 #define TL_HEADER "\n@ MID Name KState CState Where\n"
2379 print_tl_address (stream
, pc
)
2383 if (! lookup_minimal_symbol_by_pc (pc
))
2384 fprintf_filtered (stream
, local_hex_format(), pc
);
2387 extern int addressprint
;
2388 extern int asm_demangle
;
2390 int store
= addressprint
;
2392 print_address_symbolic (pc
, stream
, asm_demangle
, "");
2393 addressprint
= store
;
2397 /* For thread names, but also for gdb_message_port external name */
2398 #define MAX_NAME_LEN 50
2400 /* Returns the address of variable NAME or 0 if not found */
2402 lookup_address_of_variable (name
)
2406 CORE_ADDR symaddr
= 0;
2407 struct minimal_symbol
*msymbol
;
2409 sym
= lookup_symbol (name
,
2410 (struct block
*)NULL
,
2413 (struct symtab
**)NULL
);
2416 symaddr
= SYMBOL_VALUE (sym
);
2420 msymbol
= lookup_minimal_symbol (name
, (struct objfile
*) NULL
);
2422 if (msymbol
&& msymbol
->type
== mst_data
)
2423 symaddr
= msymbol
->address
;
2432 gdb_thread_t cproc_head
;
2433 gdb_thread_t cproc_copy
;
2434 CORE_ADDR their_cprocs
;
2435 char *buf
[TARGET_PTR_BIT
/ HOST_CHAR_BIT
];
2440 symaddr
= lookup_address_of_variable ("cproc_list");
2444 /* cproc_list is not in a file compiled with debugging
2445 symbols, but don't give up yet */
2447 symaddr
= lookup_address_of_variable ("cprocs");
2451 static int informed
= 0;
2455 warning ("Your program is loaded with an old threads library.");
2456 warning ("GDB does not know the old form of threads");
2457 warning ("so things may not work.");
2462 /* Stripped or no -lthreads loaded or "cproc_list" is in wrong segment. */
2466 /* Get the address of the first cproc in the task */
2467 if (!mach3_read_inferior (symaddr
,
2469 TARGET_PTR_BIT
/ HOST_CHAR_BIT
))
2470 error ("Can't read cproc master list at address (0x%x).", symaddr
);
2471 their_cprocs
= extract_address (buf
, TARGET_PTR_BIT
/ HOST_CHAR_BIT
);
2473 /* Scan the CPROCs in the task.
2474 CPROCs are chained with LIST field, not NEXT field, which
2475 chains mutexes, condition variables and queues */
2479 while (their_cprocs
!= (CORE_ADDR
)0)
2481 CORE_ADDR cproc_copy_incarnation
;
2482 cproc_copy
= (gdb_thread_t
) obstack_alloc (cproc_obstack
,
2483 sizeof (struct gdb_thread
));
2485 if (!mach3_read_inferior (their_cprocs
,
2486 &cproc_copy
.raw_cproc
[0],
2488 error("Can't read next cproc at 0x%x.", their_cprocs
);
2489 cproc_copy
= extract_address (buf
, TARGET_PTR_BIT
/ HOST_CHAR_BIT
);
2492 extract_address (cproc_copy
.raw_cproc
+ CPROC_LIST_OFFSET
,
2494 cproc_copy_incarnation
=
2495 extract_address (cproc_copy
.raw_cproc
+ CPROC_INCARNATION_OFFSET
,
2496 CPROC_INCARNATION_SIZE
);
2498 if (cproc_copy_incarnation
== (CORE_ADDR
)0)
2499 cproc_copy
->cthread
= NULL
;
2502 /* This CPROC has an attached CTHREAD. Get its name */
2503 cthread
= (cthread_t
)obstack_alloc (cproc_obstack
,
2504 sizeof(struct cthread
));
2506 if (!mach3_read_inferior (cproc_copy_incarnation
,
2508 sizeof(struct cthread
)))
2509 error("Can't read next thread at 0x%x.",
2510 cproc_copy_incarnation
);
2512 cproc_copy
->cthread
= cthread
;
2516 name
= (char *) obstack_alloc (cproc_obstack
, MAX_NAME_LEN
);
2518 if (!mach3_read_inferior(cthread
->name
, name
, MAX_NAME_LEN
))
2519 error("Can't read next thread's name at 0x%x.", cthread
->name
);
2521 cthread
->name
= name
;
2525 /* insert in front */
2526 cproc_copy
->next
= cproc_head
;
2527 cproc_head
= cproc_copy
;
2532 #ifndef FETCH_CPROC_STATE
2534 * Check if your machine does not grok the way this routine
2535 * fetches the FP,PC and SP of a cproc that is not
2536 * currently attached to any kernel thread (e.g. its cproc.context
2537 * field points to the place in stack where the context
2540 * If it doesn't, define your own routine.
2542 #define FETCH_CPROC_STATE(mth) mach3_cproc_state (mth)
2545 mach3_cproc_state (mthread
)
2546 gdb_thread_t mthread
;
2550 if (! mthread
|| !mthread
->cproc
|| !mthread
->cproc
->context
)
2553 context
= extract_signed_integer
2554 (mthread
->cproc
->raw_cproc
+ CPROC_CONTEXT_OFFSET
,
2555 CPROC_CONTEXT_SIZE
);
2557 mthread
->sp
= context
+ MACHINE_CPROC_SP_OFFSET
;
2559 if (mach3_read_inferior (context
+ MACHINE_CPROC_PC_OFFSET
,
2561 sizeof (CORE_ADDR
)) != sizeof (CORE_ADDR
))
2563 warning ("Can't read cproc pc from inferior");
2567 if (mach3_read_inferior (context
+ MACHINE_CPROC_FP_OFFSET
,
2569 sizeof (CORE_ADDR
)) != sizeof (CORE_ADDR
))
2571 warning ("Can't read cproc fp from inferior");
2577 #endif /* FETCH_CPROC_STATE */
2581 thread_list_command()
2583 thread_basic_info_data_t ths
;
2585 gdb_thread_t cprocs
;
2593 mach_port_t mid_or_port
;
2594 gdb_thread_t their_threads
;
2595 gdb_thread_t kthread
;
2599 char *fmt
= "There are %d kernel threads in task %d.\n";
2601 int tmid
= map_port_name_to_mid (inferior_task
, MACH_TYPE_TASK
);
2603 MACH_ERROR_NO_INFERIOR
;
2605 thread_count
= fetch_thread_info (inferior_task
,
2607 if (thread_count
== -1)
2610 if (thread_count
== 1)
2611 fmt
= "There is %d kernel thread in task %d.\n";
2613 printf_filtered (fmt
, thread_count
, tmid
);
2615 puts_filtered (TL_HEADER
);
2617 cprocs
= get_cprocs();
2619 map_cprocs_to_kernel_threads (cprocs
, their_threads
, thread_count
);
2621 for (scan
= cprocs
; scan
; scan
= scan
->next
)
2629 /* a wired cproc? */
2630 wired
= (extract_address (scan
->raw_cproc
+ CPROC_WIRED_OFFSET
,
2634 if (scan
->reverse_map
!= -1)
2635 kthread
= (their_threads
+ scan
->reverse_map
);
2641 /* These cprocs have a kernel thread */
2643 mid
= map_port_name_to_mid (kthread
->name
, MACH_TYPE_THREAD
);
2645 infoCnt
= THREAD_BASIC_INFO_COUNT
;
2647 ret
= thread_info (kthread
->name
,
2649 (thread_info_t
)&ths
,
2652 if (ret
!= KERN_SUCCESS
)
2654 warning ("Unable to get basic info on thread %d : %s",
2656 mach_error_string (ret
));
2660 /* Who is the first to have more than 100 threads */
2661 sprintf (slot
, "%d", kthread
->slotid
%100);
2663 if (kthread
->name
== current_thread
)
2666 if (ths
.suspend_count
)
2667 sprintf (buf
, "%d", ths
.suspend_count
);
2672 if (ths
.flags
& TH_FLAGS_SWAPPED
)
2676 if (ths
.flags
& TH_FLAGS_IDLE
)
2679 /* FIXME: May run afloul of arbitrary limit in printf_filtered. */
2680 printf_filtered (TL_FORMAT
,
2684 get_thread_name (scan
, kthread
->slotid
),
2685 kthread
->in_emulator
? "E" : "",
2686 translate_state (ths
.run_state
),
2688 translate_cstate (scan
->state
),
2690 print_tl_address (gdb_stdout
, kthread
->pc
);
2694 /* These cprocs don't have a kernel thread.
2695 * find out the calling frame with
2696 * FETCH_CPROC_STATE.
2699 struct gdb_thread state
;
2702 /* jtv -> emcmanus: why do you want this here? */
2703 if (scan
->incarnation
== NULL
)
2704 continue; /* EMcM */
2707 /* FIXME: May run afloul of arbitrary limit in printf_filtered. */
2708 printf_filtered (TL_FORMAT
,
2710 -neworder
, /* Pseudo MID */
2712 get_thread_name (scan
, -neworder
),
2714 "-", /* kernel state */
2716 translate_cstate (scan
->state
),
2720 if (FETCH_CPROC_STATE (&state
) == -1)
2721 puts_filtered ("???");
2723 print_tl_address (gdb_stdout
, state
.pc
);
2727 puts_filtered ("\n");
2730 /* Scan for kernel threads without cprocs */
2731 for (index
= 0; index
< thread_count
; index
++)
2733 if (! their_threads
[index
].cproc
)
2740 mach_port_t name
= their_threads
[index
].name
;
2742 mid
= map_port_name_to_mid (name
, MACH_TYPE_THREAD
);
2744 infoCnt
= THREAD_BASIC_INFO_COUNT
;
2746 ret
= thread_info(name
,
2748 (thread_info_t
)&ths
,
2751 if (ret
!= KERN_SUCCESS
)
2753 warning ("Unable to get basic info on thread %d : %s",
2755 mach_error_string (ret
));
2759 sprintf (slot
, "%d", index
%100);
2761 if (name
== current_thread
)
2766 if (ths
.suspend_count
)
2767 sprintf (buf
, "%d", ths
.suspend_count
);
2772 if (ths
.flags
& TH_FLAGS_SWAPPED
)
2776 if (ths
.flags
& TH_FLAGS_IDLE
)
2779 /* FIXME: May run afloul of arbitrary limit in printf_filtered. */
2780 printf_filtered (TL_FORMAT
,
2784 get_thread_name (NULL
, index
),
2785 their_threads
[index
].in_emulator
? "E" : "",
2786 translate_state (ths
.run_state
),
2788 "", /* No cproc state */
2789 ""); /* Can't be wired */
2790 print_tl_address (gdb_stdout
, their_threads
[index
].pc
);
2791 puts_filtered ("\n");
2795 obstack_free (cproc_obstack
, 0);
2796 obstack_init (cproc_obstack
);
2800 thread_select_command(args
, from_tty
)
2805 thread_array_t thread_list
;
2810 MACH_ERROR_NO_INFERIOR
;
2813 error_no_arg ("MID or @SLOTNUMBER to specify a thread to select");
2815 while (*args
== ' ' || *args
== '\t')
2827 if (!is_slot
|| *args
!= '0') /* Rudimentary checks */
2828 error ("You must select threads by MID or @SLOTNUMBER");
2830 if (select_thread (inferior_task
, mid
, is_slot
?2:1) != KERN_SUCCESS
)
2834 printf_filtered ("Thread %d selected\n",
2835 is_slot
? map_port_name_to_mid (current_thread
,
2836 MACH_TYPE_THREAD
) : mid
);
2839 thread_trace (thread
, set
)
2843 int flavor
= TRACE_FLAVOR
;
2844 unsigned int stateCnt
= TRACE_FLAVOR_SIZE
;
2846 thread_state_data_t state
;
2848 if (! MACH_PORT_VALID (thread
))
2850 warning ("thread_trace: invalid thread");
2854 if (must_suspend_thread
)
2855 setup_thread (thread
, 1);
2857 ret
= thread_get_state(thread
, flavor
, state
, &stateCnt
);
2858 CHK ("thread_trace: error reading thread state", ret
);
2862 TRACE_SET (thread
, state
);
2866 if (! TRACE_CLEAR (thread
, state
))
2868 if (must_suspend_thread
)
2869 setup_thread (thread
, 0);
2874 ret
= thread_set_state(thread
, flavor
, state
, stateCnt
);
2875 CHK ("thread_trace: error writing thread state", ret
);
2876 if (must_suspend_thread
)
2877 setup_thread (thread
, 0);
2880 #ifdef FLUSH_INFERIOR_CACHE
2882 /* When over-writing code on some machines the I-Cache must be flushed
2883 explicitly, because it is not kept coherent by the lazy hardware.
2884 This definitely includes breakpoints, for instance, or else we
2885 end up looping in mysterious Bpt traps */
2887 flush_inferior_icache(pc
, amount
)
2890 vm_machine_attribute_val_t flush
= MATTR_VAL_ICACHE_FLUSH
;
2893 ret
= vm_machine_attribute (inferior_task
,
2898 if (ret
!= KERN_SUCCESS
)
2899 warning ("Error flushing inferior's cache : %s",
2900 mach_error_string (ret
));
2902 #endif FLUSH_INFERIOR_CACHE
2906 suspend_all_threads (from_tty
)
2910 thread_array_t thread_list
;
2911 int thread_count
, index
;
2913 thread_basic_info_data_t th_info
;
2916 ret
= task_threads (inferior_task
, &thread_list
, &thread_count
);
2917 if (ret
!= KERN_SUCCESS
)
2919 warning ("Could not suspend inferior threads.");
2921 return_to_top_level ();
2924 for (index
= 0; index
< thread_count
; index
++)
2928 mid
= map_port_name_to_mid (thread_list
[ index
],
2931 ret
= thread_suspend(thread_list
[ index
]);
2933 if (ret
!= KERN_SUCCESS
)
2934 warning ("Error trying to suspend thread %d : %s",
2935 mid
, mach_error_string (ret
));
2939 infoCnt
= THREAD_BASIC_INFO_COUNT
;
2940 ret
= thread_info (thread_list
[ index
],
2942 (thread_info_t
) &th_info
,
2944 CHK ("suspend can't get thread info", ret
);
2946 warning ("Thread %d suspend count is %d",
2947 mid
, th_info
.suspend_count
);
2951 consume_send_rights (thread_list
, thread_count
);
2952 ret
= vm_deallocate(mach_task_self(),
2953 (vm_address_t
)thread_list
,
2954 (thread_count
* sizeof(int)));
2955 CHK ("Error trying to deallocate thread list", ret
);
2959 thread_suspend_command (args
, from_tty
)
2965 mach_port_t saved_thread
;
2967 thread_basic_info_data_t th_info
;
2969 MACH_ERROR_NO_INFERIOR
;
2971 if (!strcasecmp (args
, "all")) {
2972 suspend_all_threads (from_tty
);
2976 saved_thread
= current_thread
;
2978 mid
= parse_thread_id (args
, 0, 0);
2981 error ("You can suspend only existing kernel threads with MID or @SLOTNUMBER");
2984 mid
= map_port_name_to_mid (current_thread
, MACH_TYPE_THREAD
);
2986 if (select_thread (inferior_task
, mid
, 0) != KERN_SUCCESS
)
2989 current_thread
= saved_thread
;
2990 error ("Could not select thread %d", mid
);
2993 ret
= thread_suspend (current_thread
);
2994 if (ret
!= KERN_SUCCESS
)
2995 warning ("thread_suspend failed : %s",
2996 mach_error_string (ret
));
2998 infoCnt
= THREAD_BASIC_INFO_COUNT
;
2999 ret
= thread_info (current_thread
,
3001 (thread_info_t
) &th_info
,
3003 CHK ("suspend can't get thread info", ret
);
3005 warning ("Thread %d suspend count is %d", mid
, th_info
.suspend_count
);
3007 current_thread
= saved_thread
;
3010 resume_all_threads (from_tty
)
3014 thread_array_t thread_list
;
3015 int thread_count
, index
;
3018 thread_basic_info_data_t th_info
;
3020 ret
= task_threads (inferior_task
, &thread_list
, &thread_count
);
3021 if (ret
!= KERN_SUCCESS
)
3024 error("task_threads", mach_error_string( ret
));
3027 for (index
= 0; index
< thread_count
; index
++)
3029 infoCnt
= THREAD_BASIC_INFO_COUNT
;
3030 ret
= thread_info (thread_list
[ index
],
3032 (thread_info_t
) &th_info
,
3034 CHK ("resume_all can't get thread info", ret
);
3036 mid
= map_port_name_to_mid (thread_list
[ index
],
3039 if (! th_info
.suspend_count
)
3041 if (mid
!= -1 && from_tty
)
3042 warning ("Thread %d is not suspended", mid
);
3046 ret
= thread_resume (thread_list
[ index
]);
3048 if (ret
!= KERN_SUCCESS
)
3049 warning ("Error trying to resume thread %d : %s",
3050 mid
, mach_error_string (ret
));
3051 else if (mid
!= -1 && from_tty
)
3052 warning ("Thread %d suspend count is %d",
3053 mid
, --th_info
.suspend_count
);
3056 consume_send_rights (thread_list
, thread_count
);
3057 ret
= vm_deallocate(mach_task_self(),
3058 (vm_address_t
)thread_list
,
3059 (thread_count
* sizeof(int)));
3060 CHK("Error trying to deallocate thread list", ret
);
3064 thread_resume_command (args
, from_tty
)
3069 mach_port_t saved_thread
;
3071 thread_basic_info_data_t th_info
;
3072 int infoCnt
= THREAD_BASIC_INFO_COUNT
;
3074 MACH_ERROR_NO_INFERIOR
;
3076 if (!strcasecmp (args
, "all")) {
3077 resume_all_threads (from_tty
);
3081 saved_thread
= current_thread
;
3083 mid
= parse_thread_id (args
, 0, 0);
3086 error ("You can resume only existing kernel threads with MID or @SLOTNUMBER");
3089 mid
= map_port_name_to_mid (current_thread
, MACH_TYPE_THREAD
);
3091 if (select_thread (inferior_task
, mid
, 0) != KERN_SUCCESS
)
3094 current_thread
= saved_thread
;
3095 return_to_top_level ();
3098 ret
= thread_info (current_thread
,
3100 (thread_info_t
) &th_info
,
3102 CHK ("resume can't get thread info", ret
);
3104 if (! th_info
.suspend_count
)
3106 warning ("Thread %d is not suspended", mid
);
3110 ret
= thread_resume (current_thread
);
3111 if (ret
!= KERN_SUCCESS
)
3112 warning ("thread_resume failed : %s",
3113 mach_error_string (ret
));
3116 th_info
.suspend_count
--;
3117 warning ("Thread %d suspend count is %d", mid
, th_info
.suspend_count
);
3121 current_thread
= saved_thread
;
3125 thread_kill_command (args
, from_tty
)
3132 thread_array_t thread_table
;
3134 mach_port_t thread_to_kill
= MACH_PORT_NULL
;
3137 MACH_ERROR_NO_INFERIOR
;
3140 error_no_arg ("thread mid to kill from the inferior task");
3142 mid
= parse_thread_id (args
, 0, 0);
3145 error ("You can kill only existing kernel threads with MID or @SLOTNUMBER");
3149 ret
= machid_mach_port (mid_server
, mid_auth
, mid
, &thread_to_kill
);
3150 CHK ("thread_kill_command: machid_mach_port map failed", ret
);
3153 mid
= map_port_name_to_mid (current_thread
, MACH_TYPE_THREAD
);
3155 /* Don't allow gdb to kill *any* thread in the system. Use mkill program for that */
3156 ret
= task_threads (inferior_task
, &thread_table
, &thread_count
);
3157 CHK ("Error getting inferior's thread list", ret
);
3159 if (thread_to_kill
== current_thread
)
3161 ret
= thread_terminate (thread_to_kill
);
3162 CHK ("Thread could not be terminated", ret
);
3164 if (select_thread (inferior_task
, 0, 1) != KERN_SUCCESS
)
3165 warning ("Last thread was killed, use \"kill\" command to kill task");
3168 for (index
= 0; index
< thread_count
; index
++)
3169 if (thread_table
[ index
] == thread_to_kill
)
3171 ret
= thread_terminate (thread_to_kill
);
3172 CHK ("Thread could not be terminated", ret
);
3175 if (thread_count
> 1)
3176 consume_send_rights (thread_table
, thread_count
);
3178 ret
= vm_deallocate (mach_task_self(), (vm_address_t
)thread_table
,
3179 (thread_count
* sizeof(mach_port_t
)));
3180 CHK ("Error trying to deallocate thread list", ret
);
3182 warning ("Thread %d killed", mid
);
3186 /* Task specific commands; add more if you like */
3189 task_resume_command (args
, from_tty
)
3194 task_basic_info_data_t ta_info
;
3195 int infoCnt
= TASK_BASIC_INFO_COUNT
;
3196 int mid
= map_port_name_to_mid (inferior_task
, MACH_TYPE_TASK
);
3198 MACH_ERROR_NO_INFERIOR
;
3200 /* Would be trivial to change, but is it desirable? */
3202 error ("Currently gdb can resume only it's inferior task");
3204 ret
= task_info (inferior_task
,
3206 (task_info_t
) &ta_info
,
3208 CHK ("task_resume_command: task_info failed", ret
);
3210 if (ta_info
.suspend_count
== 0)
3211 error ("Inferior task %d is not suspended", mid
);
3212 else if (ta_info
.suspend_count
== 1 &&
3214 !query ("Suspend count is now 1. Do you know what you are doing? "))
3215 error ("Task not resumed");
3217 ret
= task_resume (inferior_task
);
3218 CHK ("task_resume_command: task_resume", ret
);
3220 if (ta_info
.suspend_count
== 1)
3222 warning ("Inferior task %d is no longer suspended", mid
);
3223 must_suspend_thread
= 1;
3224 /* @@ This is not complete: Registers change all the time when not
3226 registers_changed ();
3229 warning ("Inferior task %d suspend count is now %d",
3230 mid
, ta_info
.suspend_count
-1);
3235 task_suspend_command (args
, from_tty
)
3240 task_basic_info_data_t ta_info
;
3241 int infoCnt
= TASK_BASIC_INFO_COUNT
;
3242 int mid
= map_port_name_to_mid (inferior_task
, MACH_TYPE_TASK
);
3244 MACH_ERROR_NO_INFERIOR
;
3246 /* Would be trivial to change, but is it desirable? */
3248 error ("Currently gdb can suspend only it's inferior task");
3250 ret
= task_suspend (inferior_task
);
3251 CHK ("task_suspend_command: task_suspend", ret
);
3253 must_suspend_thread
= 0;
3255 ret
= task_info (inferior_task
,
3257 (task_info_t
) &ta_info
,
3259 CHK ("task_suspend_command: task_info failed", ret
);
3261 warning ("Inferior task %d suspend count is now %d",
3262 mid
, ta_info
.suspend_count
);
3269 static char size
[ 30 ];
3270 int zz
= bytes
/1024;
3273 sprintf (size
, "%-2.1f M", ((float)bytes
)/(1024.0*1024.0));
3275 sprintf (size
, "%d K", zz
);
3280 /* Does this require the target task to be suspended?? I don't think so. */
3282 task_info_command (args
, from_tty
)
3289 task_basic_info_data_t ta_info
;
3290 int infoCnt
= TASK_BASIC_INFO_COUNT
;
3291 int page_size
= round_page(1);
3292 int thread_count
= 0;
3294 if (MACH_PORT_VALID (inferior_task
))
3295 mid
= map_port_name_to_mid (inferior_task
,
3298 task
= inferior_task
;
3302 int tmid
= atoi (args
);
3305 error ("Invalid mid %d for task info", tmid
);
3310 ret
= machid_mach_port (mid_server
, mid_auth
, tmid
, &task
);
3311 CHK ("task_info_command: machid_mach_port map failed", ret
);
3316 error ("You have to give the task MID as an argument");
3318 ret
= task_info (task
,
3320 (task_info_t
) &ta_info
,
3322 CHK ("task_info_command: task_info failed", ret
);
3324 printf_filtered ("\nTask info for task %d:\n\n", mid
);
3325 printf_filtered (" Suspend count : %d\n", ta_info
.suspend_count
);
3326 printf_filtered (" Base priority : %d\n", ta_info
.base_priority
);
3327 printf_filtered (" Virtual size : %s\n", get_size (ta_info
.virtual_size
));
3328 printf_filtered (" Resident size : %s\n", get_size (ta_info
.resident_size
));
3331 thread_array_t thread_list
;
3333 ret
= task_threads (task
, &thread_list
, &thread_count
);
3334 CHK ("task_info_command: task_threads", ret
);
3336 printf_filtered (" Thread count : %d\n", thread_count
);
3338 consume_send_rights (thread_list
, thread_count
);
3339 ret
= vm_deallocate(mach_task_self(),
3340 (vm_address_t
)thread_list
,
3341 (thread_count
* sizeof(int)));
3342 CHK("Error trying to deallocate thread list", ret
);
3344 if (have_emulator_p (task
))
3345 printf_filtered (" Emulator at : 0x%x..0x%x\n",
3346 EMULATOR_BASE
, EMULATOR_END
);
3348 printf_filtered (" No emulator.\n");
3350 if (thread_count
&& task
== inferior_task
)
3351 printf_filtered ("\nUse the \"thread list\" command to see the threads\n");
3354 /* You may either FORWARD the exception to the inferior, or KEEP
3355 * it and return to GDB command level.
3357 * exception mid [ forward | keep ]
3361 exception_command (args
, from_tty
)
3370 error_no_arg ("exception number action");
3372 while (*scan
== ' ' || *scan
== '\t') scan
++;
3374 if ('0' <= *scan
&& *scan
<= '9')
3375 while ('0' <= *scan
&& *scan
<= '9')
3378 error ("exception number action");
3380 exception
= atoi (args
);
3381 if (exception
<= 0 || exception
> MAX_EXCEPTION
)
3382 error ("Allowed exception numbers are in range 1..%d",
3385 if (*scan
!= ' ' && *scan
!= '\t')
3386 error ("exception number must be followed by a space");
3388 while (*scan
== ' ' || *scan
== '\t') scan
++;
3399 error("exception number action");
3401 if (!strncasecmp (args
, "forward", len
))
3402 exception_map
[ exception
].forward
= TRUE
;
3403 else if (!strncasecmp (args
, "keep", len
))
3404 exception_map
[ exception
].forward
= FALSE
;
3406 error ("exception action is either \"keep\" or \"forward\"");
3410 print_exception_info (exception
)
3413 boolean_t forward
= exception_map
[ exception
].forward
;
3415 printf_filtered ("%s\t(%d): ", exception_map
[ exception
].name
,
3418 if (exception_map
[ exception
].sigmap
!= SIG_UNKNOWN
)
3419 printf_filtered ("keep and handle as signal %d\n",
3420 exception_map
[ exception
].sigmap
);
3422 printf_filtered ("keep and handle as unknown signal %d\n",
3423 exception_map
[ exception
].sigmap
);
3425 printf_filtered ("forward exception to inferior\n");
3429 exception_info (args
, from_tty
)
3436 for (exception
= 1; exception
<= MAX_EXCEPTION
; exception
++)
3437 print_exception_info (exception
);
3440 exception
= atoi (args
);
3442 if (exception
<= 0 || exception
> MAX_EXCEPTION
)
3443 error ("Invalid exception number, values from 1 to %d allowed",
3445 print_exception_info (exception
);
3449 /* Check for actions for mach exceptions.
3451 mach3_exception_actions (w
, force_print_only
, who
)
3453 boolean_t force_print_only
;
3456 boolean_t force_print
= FALSE
;
3459 if (force_print_only
||
3460 exception_map
[stop_exception
].sigmap
== SIG_UNKNOWN
)
3463 WSETSTOP (*w
, exception_map
[stop_exception
].sigmap
);
3465 if (exception_map
[stop_exception
].print
|| force_print
)
3467 int giveback
= grab_terminal ();
3469 printf_filtered ("\n%s received %s exception : ",
3471 exception_map
[stop_exception
].name
);
3475 switch(stop_exception
) {
3476 case EXC_BAD_ACCESS
:
3477 printf_filtered ("referencing address 0x%x : %s\n",
3479 mach_error_string (stop_code
));
3481 case EXC_BAD_INSTRUCTION
:
3483 ("illegal or undefined instruction. code %d subcode %d\n",
3484 stop_code
, stop_subcode
);
3486 case EXC_ARITHMETIC
:
3487 printf_filtered ("code %d\n", stop_code
);
3490 printf_filtered ("code %d subcode %d\n", stop_code
, stop_subcode
);
3493 printf_filtered ("%s specific, code 0x%x\n",
3494 stop_code
< 0xffff ? "hardware" : "os emulation",
3497 case EXC_BREAKPOINT
:
3498 printf_filtered ("type %d (machine dependent)\n",
3502 fatal ("Unknown exception");
3506 terminal_inferior ();
3510 setup_notify_port (create_new
)
3515 if (MACH_PORT_VALID (our_notify_port
))
3517 ret
= mach_port_destroy (mach_task_self (), our_notify_port
);
3518 CHK ("Could not destroy our_notify_port", ret
);
3521 our_notify_port
= MACH_PORT_NULL
;
3522 notify_chain
= (port_chain_t
) NULL
;
3523 port_chain_destroy (port_chain_obstack
);
3527 ret
= mach_port_allocate (mach_task_self(),
3528 MACH_PORT_RIGHT_RECEIVE
,
3530 if (ret
!= KERN_SUCCESS
)
3531 fatal("Creating notify port %s", mach_error_string(ret
));
3533 ret
= mach_port_move_member(mach_task_self(),
3535 inferior_wait_port_set
);
3536 if (ret
!= KERN_SUCCESS
)
3537 fatal("initial move member %s",mach_error_string(ret
));
3542 * Register our message port to the net name server
3544 * Currently used only by the external stop-gdb program
3545 * since ^C does not work if you would like to enter
3546 * gdb command level while debugging your program.
3548 * NOTE: If the message port is sometimes used for other
3549 * purposes also, the NAME must not be a guessable one.
3550 * Then, there should be a way to change it.
3553 char registered_name
[ MAX_NAME_LEN
];
3556 message_port_info (args
, from_tty
)
3560 if (registered_name
[0])
3561 printf_filtered ("gdb's message port name: '%s'\n",
3564 printf_filtered ("gdb's message port is not currently registered\n");
3568 gdb_register_port (name
, port
)
3573 static int already_signed
= 0;
3576 if (! MACH_PORT_VALID (port
) || !name
|| !*name
)
3578 warning ("Invalid registration request");
3582 if (! already_signed
)
3584 ret
= mach_port_insert_right (mach_task_self (),
3587 MACH_MSG_TYPE_MAKE_SEND
);
3588 CHK ("Failed to create a signature to our_message_port", ret
);
3591 else if (already_signed
> 1)
3593 ret
= netname_check_out (name_server_port
,
3596 CHK ("Failed to check out gdb's message port", ret
);
3597 registered_name
[0] = '\000';
3601 ret
= netname_check_in (name_server_port
, /* Name server port */
3602 name
, /* Name of service */
3603 our_message_port
, /* Signature */
3604 port
); /* Creates a new send right */
3605 CHK("Failed to check in the port", ret
);
3608 while(len
< MAX_NAME_LEN
&& *(name
+len
))
3610 registered_name
[len
] = *(name
+len
);
3613 registered_name
[len
] = '\000';
3617 struct cmd_list_element
*cmd_thread_list
;
3618 struct cmd_list_element
*cmd_task_list
;
3622 thread_command (arg
, from_tty
)
3626 printf_unfiltered ("\"thread\" must be followed by the name of a thread command.\n");
3627 help_list (cmd_thread_list
, "thread ", -1, gdb_stdout
);
3632 task_command (arg
, from_tty
)
3636 printf_unfiltered ("\"task\" must be followed by the name of a task command.\n");
3637 help_list (cmd_task_list
, "task ", -1, gdb_stdout
);
3640 add_mach_specific_commands ()
3642 extern void condition_thread ();
3644 /* Thread handling commands */
3646 /* FIXME: Move our thread support into the generic thread.c stuff so we
3647 can share that code. */
3648 add_prefix_cmd ("mthread", class_stack
, thread_command
,
3649 "Generic command for handling Mach threads in the debugged task.",
3650 &cmd_thread_list
, "thread ", 0, &cmdlist
);
3652 add_com_alias ("th", "mthread", class_stack
, 1);
3654 add_cmd ("select", class_stack
, thread_select_command
,
3655 "Select and print MID of the selected thread",
3657 add_cmd ("list", class_stack
, thread_list_command
,
3658 "List info of task's threads. Selected thread is marked with '*'",
3660 add_cmd ("suspend", class_run
, thread_suspend_command
,
3661 "Suspend one or all of the threads in the selected task.",
3663 add_cmd ("resume", class_run
, thread_resume_command
,
3664 "Resume one or all of the threads in the selected task.",
3666 add_cmd ("kill", class_run
, thread_kill_command
,
3667 "Kill the specified thread MID from inferior task.",
3669 add_cmd ("break", class_breakpoint
, condition_thread
,
3670 "Breakpoint N will only be effective for thread MID or @SLOT\n\
3671 If MID/@SLOT is omitted allow all threads to break at breakpoint",
3673 /* Thread command shorthands (for backward compatibility) */
3674 add_alias_cmd ("ts", "mthread select", 0, 0, &cmdlist
);
3675 add_alias_cmd ("tl", "mthread list", 0, 0, &cmdlist
);
3677 /* task handling commands */
3679 add_prefix_cmd ("task", class_stack
, task_command
,
3680 "Generic command for handling debugged task.",
3681 &cmd_task_list
, "task ", 0, &cmdlist
);
3683 add_com_alias ("ta", "task", class_stack
, 1);
3685 add_cmd ("suspend", class_run
, task_suspend_command
,
3686 "Suspend the inferior task.",
3688 add_cmd ("resume", class_run
, task_resume_command
,
3689 "Resume the inferior task.",
3691 add_cmd ("info", no_class
, task_info_command
,
3692 "Print information about the specified task.",
3695 /* Print my message port name */
3697 add_info ("message-port", message_port_info
,
3698 "Returns the name of gdb's message port in the netnameserver");
3700 /* Exception commands */
3702 add_info ("exceptions", exception_info
,
3703 "What debugger does when program gets various exceptions.\n\
3704 Specify an exception number as argument to print info on that\n\
3707 add_com ("exception", class_run
, exception_command
,
3708 "Specify how to handle an exception.\n\
3709 Args are exception number followed by \"forward\" or \"keep\".\n\
3710 `Forward' means forward the exception to the program's normal exception\n\
3712 `Keep' means reenter debugger if this exception happens, and GDB maps\n\
3713 the exception to some signal (see info exception)\n\
3714 Normally \"keep\" is used to return to GDB on exception.");
3718 do_mach_notify_dead_name (notify
, name
)
3722 kern_return_t kr
= KERN_SUCCESS
;
3724 /* Find the thing that notified */
3725 port_chain_t element
= port_chain_member (notify_chain
, name
);
3727 /* Take name of from unreceived dead name notification list */
3728 notify_chain
= port_chain_delete (notify_chain
, name
);
3731 error ("Received a dead name notify from unchained port (0x%x)", name
);
3733 switch (element
->type
) {
3735 case MACH_TYPE_THREAD
:
3736 target_terminal_ours_for_output ();
3737 if (name
== current_thread
)
3739 printf_filtered ("\nCurrent thread %d died", element
->mid
);
3740 current_thread
= MACH_PORT_NULL
;
3743 printf_filtered ("\nThread %d died", element
->mid
);
3747 case MACH_TYPE_TASK
:
3748 target_terminal_ours_for_output ();
3749 if (name
!= inferior_task
)
3750 printf_filtered ("Task %d died, but it was not the selected task",
3754 printf_filtered ("Current task %d died", element
->mid
);
3756 mach_port_destroy (mach_task_self(), name
);
3757 inferior_task
= MACH_PORT_NULL
;
3760 warning ("There were still unreceived dead_name_notifications???");
3762 /* Destroy the old notifications */
3763 setup_notify_port (0);
3769 error ("Unregistered dead_name 0x%x notification received. Type is %d, mid is 0x%x",
3770 name
, element
->type
, element
->mid
);
3774 return KERN_SUCCESS
;
3778 do_mach_notify_msg_accepted (notify
, name
)
3782 warning ("do_mach_notify_msg_accepted : notify %x, name %x",
3784 return KERN_SUCCESS
;
3788 do_mach_notify_no_senders (notify
, mscount
)
3790 mach_port_mscount_t mscount
;
3792 warning ("do_mach_notify_no_senders : notify %x, mscount %x",
3794 return KERN_SUCCESS
;
3798 do_mach_notify_port_deleted (notify
, name
)
3802 warning ("do_mach_notify_port_deleted : notify %x, name %x",
3804 return KERN_SUCCESS
;
3808 do_mach_notify_port_destroyed (notify
, rights
)
3812 warning ("do_mach_notify_port_destroyed : notify %x, rights %x",
3814 return KERN_SUCCESS
;
3818 do_mach_notify_send_once (notify
)
3822 /* MANY of these are generated. */
3823 warning ("do_mach_notify_send_once : notify %x",
3826 return KERN_SUCCESS
;
3829 /* Kills the inferior. It's gone when you call this */
3831 kill_inferior_fast ()
3835 if (inferior_pid
== 0 || inferior_pid
== 1)
3838 /* kill() it, since the Unix server does not otherwise notice when
3839 * killed with task_terminate().
3841 if (inferior_pid
> 0)
3842 kill (inferior_pid
, SIGKILL
);
3844 /* It's propably terminate already */
3845 (void) task_terminate (inferior_task
);
3847 inferior_task
= MACH_PORT_NULL
;
3848 current_thread
= MACH_PORT_NULL
;
3850 wait3 (&w
, WNOHANG
, 0);
3852 setup_notify_port (0);
3858 kill_inferior_fast ();
3859 target_mourn_inferior ();
3862 /* Clean up after the inferior dies. */
3865 m3_mourn_inferior ()
3867 unpush_target (&m3_ops
);
3868 generic_mourn_inferior ();
3872 /* Fork an inferior process, and start debugging it. */
3875 m3_create_inferior (exec_file
, allargs
, env
)
3880 fork_inferior (exec_file
, allargs
, env
, m3_trace_m3
, m3_trace_him
);
3881 /* We are at the first instruction we care about. */
3882 /* Pedal to the metal... */
3883 proceed ((CORE_ADDR
) -1, 0, 0);
3886 /* Mark our target-struct as eligible for stray "run" and "attach"
3894 /* Mach 3.0 does not need ptrace for anything
3895 * Make sure nobody uses it on mach.
3900 error ("Lose, Lose! Somebody called ptrace\n");
3903 /* Resume execution of the inferior process.
3904 If STEP is nonzero, single-step it.
3905 If SIGNAL is nonzero, give it that signal. */
3908 m3_resume (pid
, step
, signal
)
3917 thread_basic_info_data_t th_info
;
3918 unsigned int infoCnt
= THREAD_BASIC_INFO_COUNT
;
3920 /* There is no point in single stepping when current_thread
3923 if (! MACH_PORT_VALID (current_thread
))
3924 error ("No thread selected; can not single step");
3926 /* If current_thread is suspended, tracing it would never return.
3928 ret
= thread_info (current_thread
,
3930 (thread_info_t
) &th_info
,
3932 CHK ("child_resume: can't get thread info", ret
);
3934 if (th_info
.suspend_count
)
3935 error ("Can't trace a suspended thread. Use \"thread resume\" command to resume it");
3938 vm_read_cache_valid
= FALSE
;
3940 if (signal
&& inferior_pid
> 0) /* Do not signal, if attached by MID */
3941 kill (inferior_pid
, signal
);
3945 suspend_all_threads (0);
3947 setup_single_step (current_thread
, TRUE
);
3949 ret
= thread_resume (current_thread
);
3950 CHK ("thread_resume", ret
);
3953 ret
= task_resume (inferior_task
);
3954 if (ret
== KERN_FAILURE
)
3955 warning ("Task was not suspended");
3957 CHK ("Resuming task", ret
);
3959 /* HACK HACK This is needed by the multiserver system HACK HACK */
3960 while ((ret
= task_resume(inferior_task
)) == KERN_SUCCESS
)
3961 /* make sure it really runs */;
3962 /* HACK HACK This is needed by the multiserver system HACK HACK */
3965 #ifdef ATTACH_DETACH
3967 /* Start debugging the process with the given task */
3973 inferior_task
= tid
;
3975 ret
= task_suspend (inferior_task
);
3976 CHK("task_attach: task_suspend", ret
);
3978 must_suspend_thread
= 0;
3980 setup_notify_port (1);
3982 request_notify (inferior_task
, MACH_NOTIFY_DEAD_NAME
, MACH_TYPE_TASK
);
3984 setup_exception_port ();
3986 emulator_present
= have_emulator_p (inferior_task
);
3991 /* Well, we can call error also here and leave the
3992 * target stack inconsistent. Sigh.
3993 * Fix this sometime (the only way to fail here is that
3994 * the task has no threads at all, which is rare, but
3995 * possible; or if the target task has died, which is also
3996 * possible, but unlikely, since it has been suspended.
3997 * (Someone must have killed it))
4002 if (select_thread (inferior_task
, 0, 1) != KERN_SUCCESS
)
4003 error ("Could not select any threads to attach to");
4011 ret
= machid_mach_port (mid_server
, mid_auth
, mid
, &inferior_task
);
4012 CHK("mid_attach: machid_mach_port", ret
);
4014 task_attach (inferior_task
);
4020 * Start debugging the process whose unix process-id is PID.
4021 * A negative "pid" value is legal and signifies a mach_id not a unix pid.
4023 * Prevent (possible unwanted) dangerous operations by enabled users
4024 * like "atta 0" or "atta foo" (equal to the previous :-) and
4025 * "atta pidself". Anyway, the latter is allowed by specifying a MID.
4034 error("MID=0, Debugging the master unix server does not compute");
4036 /* Foo. This assumes gdb has a unix pid */
4037 if (pid
== getpid())
4038 error ("I will debug myself only by mid. (Gdb would suspend itself!)");
4042 mid_attach (-(pid
));
4044 /* inferior_pid will be NEGATIVE! */
4047 return inferior_pid
;
4050 inferior_task
= task_by_pid (pid
);
4051 if (! MACH_PORT_VALID (inferior_task
))
4052 error("Cannot map Unix pid %d to Mach task port", pid
);
4054 task_attach (inferior_task
);
4058 return inferior_pid
;
4061 /* Attach to process PID, then initialize for debugging it
4062 and wait for the trace-trap that results from attaching. */
4065 m3_attach (args
, from_tty
)
4073 error_no_arg ("process-id to attach");
4077 if (pid
== getpid()) /* Trying to masturbate? */
4078 error ("I refuse to debug myself!");
4082 exec_file
= (char *) get_exec_file (0);
4085 printf_unfiltered ("Attaching to program `%s', %s\n", exec_file
, target_pid_to_str (pid
));
4087 printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid
));
4089 gdb_flush (gdb_stdout
);
4094 push_target (&procfs_ops
);
4098 deallocate_inferior_ports ()
4101 thread_array_t thread_list
;
4102 int thread_count
, index
;
4104 if (!MACH_PORT_VALID (inferior_task
))
4107 ret
= task_threads (inferior_task
, &thread_list
, &thread_count
);
4108 if (ret
!= KERN_SUCCESS
)
4110 warning ("deallocate_inferior_ports: task_threads",
4111 mach_error_string(ret
));
4115 /* Get rid of send rights to task threads */
4116 for (index
= 0; index
< thread_count
; index
++)
4119 ret
= mach_port_get_refs (mach_task_self (),
4121 MACH_PORT_RIGHT_SEND
,
4123 CHK("deallocate_inferior_ports: get refs", ret
);
4127 ret
= mach_port_mod_refs (mach_task_self (),
4129 MACH_PORT_RIGHT_SEND
,
4131 CHK("deallocate_inferior_ports: mod refs", ret
);
4135 ret
= mach_port_mod_refs (mach_task_self (),
4136 inferior_exception_port
,
4137 MACH_PORT_RIGHT_RECEIVE
,
4139 CHK ("deallocate_inferior_ports: cannot get rid of exception port", ret
);
4141 ret
= mach_port_deallocate (mach_task_self (),
4143 CHK ("deallocate_task_port: deallocating inferior_task", ret
);
4145 current_thread
= MACH_PORT_NULL
;
4146 inferior_task
= MACH_PORT_NULL
;
4149 /* Stop debugging the process whose number is PID
4150 and continue it with signal number SIGNAL.
4151 SIGNAL = 0 means just continue it. */
4154 m3_do_detach (signal
)
4159 MACH_ERROR_NO_INFERIOR
;
4161 if (current_thread
!= MACH_PORT_NULL
)
4163 /* Store the gdb's view of the thread we are deselecting
4165 * @@ I am really not sure if this is ever needeed.
4167 target_prepare_to_store ();
4168 target_store_registers (-1);
4171 ret
= task_set_special_port (inferior_task
,
4172 TASK_EXCEPTION_PORT
,
4173 inferior_old_exception_port
);
4174 CHK ("task_set_special_port", ret
);
4176 /* Discard all requested notifications */
4177 setup_notify_port (0);
4179 if (remove_breakpoints ())
4180 warning ("Could not remove breakpoints when detaching");
4182 if (signal
&& inferior_pid
> 0)
4183 kill (inferior_pid
, signal
);
4185 /* the task might be dead by now */
4186 (void) task_resume (inferior_task
);
4188 deallocate_inferior_ports ();
4193 /* Take a program previously attached to and detaches it.
4194 The program resumes execution and will no longer stop
4195 on signals, etc. We'd better not have left any breakpoints
4196 in the program or it'll die when it hits one. For this
4197 to work, it may be necessary for the process to have been
4198 previously attached. It *might* work if the program was
4199 started via fork. */
4202 m3_detach (args
, from_tty
)
4210 char *exec_file
= get_exec_file (0);
4213 printf_unfiltered ("Detaching from program: %s %s\n",
4214 exec_file
, target_pid_to_str (inferior_pid
));
4215 gdb_flush (gdb_stdout
);
4218 siggnal
= atoi (args
);
4220 m3_do_detach (siggnal
);
4222 unpush_target (&m3_ops
); /* Pop out of handling an inferior */
4224 #endif /* ATTACH_DETACH */
4233 char *bsd1_names
[] = {
4301 int bsd1_nnames
= sizeof(bsd1_names
)/sizeof(bsd1_names
[0]);
4311 case MACH_MSG_TYPE_BOOLEAN
:
4313 case MACH_MSG_TYPE_INTEGER_16
:
4315 case MACH_MSG_TYPE_INTEGER_32
:
4317 case MACH_MSG_TYPE_CHAR
:
4319 case MACH_MSG_TYPE_BYTE
:
4321 case MACH_MSG_TYPE_REAL
:
4323 case MACH_MSG_TYPE_STRING
:
4326 sprintf(buf
,"%d",name
);
4339 if (id
>= 101000 && id
< 101000+bsd1_nnames
) {
4340 if (p
= bsd1_names
[id
-101000])
4344 return "psignal_retry";
4347 sprintf(buf
,"%d",id
);
4352 mach_msg_header_t
*mp
;
4354 char *fmt_x
= "%20s : 0x%08x\n";
4355 char *fmt_d
= "%20s : %10d\n";
4356 char *fmt_s
= "%20s : %s\n";
4359 puts_filtered ("\n");
4360 #define pr(fmt,h,x) printf_filtered(fmt,STR(x),(h).x)
4361 pr(fmt_x
,(*mp
),msgh_bits
);
4362 pr(fmt_d
,(*mp
),msgh_size
);
4363 pr(fmt_x
,(*mp
),msgh_remote_port
);
4364 pr(fmt_x
,(*mp
),msgh_local_port
);
4365 pr(fmt_d
,(*mp
),msgh_kind
);
4366 printf_filtered(fmt_s
,STR(msgh_id
),id_str(mp
->msgh_id
,buf
));
4368 if (debug_level
> 1)
4373 ep
= p
+mp
->msgh_size
;
4375 for(; p
< ep
; p
+= plen
) {
4376 mach_msg_type_t
*tp
;
4377 mach_msg_type_long_t
*tlp
;
4378 int name
,size
,number
;
4379 tp
= (mach_msg_type_t
*)p
;
4380 if (tp
->msgt_longform
) {
4381 tlp
= (mach_msg_type_long_t
*)tp
;
4382 name
= tlp
->msgtl_name
;
4383 size
= tlp
->msgtl_size
;
4384 number
= tlp
->msgtl_number
;
4385 plen
= sizeof(*tlp
);
4387 name
= tp
->msgt_name
;
4388 size
= tp
->msgt_size
;
4389 number
= tp
->msgt_number
;
4392 printf_filtered("name=%-16s size=%2d number=%7d inline=%d long=%d deal=%d\n",
4393 name_str(name
,buf
),size
,number
,tp
->msgt_inline
,
4394 tp
->msgt_longform
, tp
->msgt_deallocate
);
4396 if (tp
->msgt_inline
) {
4399 l
= (l
+sizeof(long)-1)&~((sizeof(long))-1);
4401 print_data(dp
,size
,number
);
4403 plen
+= sizeof(int*);
4405 printf_filtered("plen=%d\n",plen
);
4410 print_data(p
,size
,number
)
4421 for(i
= 0; i
< number
; i
++) {
4422 printf_filtered(" %02x",p
[i
]);
4427 for(i
= 0; i
< number
; i
++) {
4428 printf_filtered(" %04x",sp
[i
]);
4433 for(i
= 0; i
< number
; i
++) {
4434 printf_filtered(" %08x",ip
[i
]);
4438 puts_filtered("\n");
4442 struct target_ops m3_ops
= {
4443 "mach", /* to_shortname */
4444 "Mach child process", /* to_longname */
4445 "Mach child process (started by the \"run\" command).", /* to_doc */
4446 ??_open
, /* to_open */
4448 m3_attach
, /* to_attach */
4449 m3_detach
, /* to_detach */
4450 m3_resume
, /* to_resume */
4451 mach_really_wait
, /* to_wait */
4452 fetch_inferior_registers
, /* to_fetch_registers */
4453 store_inferior_registers
, /* to_store_registers */
4454 child_prepare_to_store
, /* to_prepare_to_store */
4455 m3_xfer_memory
, /* to_xfer_memory */
4457 /* FIXME: Should print MID and all that crap. */
4458 child_files_info
, /* to_files_info */
4460 memory_insert_breakpoint
, /* to_insert_breakpoint */
4461 memory_remove_breakpoint
, /* to_remove_breakpoint */
4462 terminal_init_inferior
, /* to_terminal_init */
4463 terminal_inferior
, /* to_terminal_inferior */
4464 terminal_ours_for_output
, /* to_terminal_ours_for_output */
4465 terminal_ours
, /* to_terminal_ours */
4466 child_terminal_info
, /* to_terminal_info */
4467 m3_kill_inferior
, /* to_kill */
4469 0, /* to_lookup_symbol */
4471 m3_create_inferior
, /* to_create_inferior */
4472 m3_mourn_inferior
, /* to_mourn_inferior */
4473 m3_can_run
, /* to_can_run */
4474 0, /* to_notice_signals */
4475 process_stratum
, /* to_stratum */
4477 1, /* to_has_all_memory */
4478 1, /* to_has_memory */
4479 1, /* to_has_stack */
4480 1, /* to_has_registers */
4481 1, /* to_has_execution */
4483 0, /* sections_end */
4484 OPS_MAGIC
/* to_magic */
4488 _initialize_m3_nat ()
4492 add_target (&m3_ops
);
4494 ret
= mach_port_allocate(mach_task_self(),
4495 MACH_PORT_RIGHT_PORT_SET
,
4496 &inferior_wait_port_set
);
4497 if (ret
!= KERN_SUCCESS
)
4498 fatal("initial port set %s",mach_error_string(ret
));
4500 /* mach_really_wait now waits for this */
4501 currently_waiting_for
= inferior_wait_port_set
;
4503 ret
= netname_look_up(name_server_port
, hostname
, "MachID", &mid_server
);
4504 if (ret
!= KERN_SUCCESS
)
4506 mid_server
= MACH_PORT_NULL
;
4508 warning ("initialize machid: netname_lookup_up(MachID) : %s",
4509 mach_error_string(ret
));
4510 warning ("Some (most?) features disabled...");
4513 mid_auth
= mach_privileged_host_port();
4514 if (mid_auth
== MACH_PORT_NULL
)
4515 mid_auth
= mach_task_self();
4517 obstack_init (port_chain_obstack
);
4519 ret
= mach_port_allocate (mach_task_self (),
4520 MACH_PORT_RIGHT_RECEIVE
,
4521 &thread_exception_port
);
4522 CHK ("Creating thread_exception_port for single stepping", ret
);
4524 ret
= mach_port_insert_right (mach_task_self (),
4525 thread_exception_port
,
4526 thread_exception_port
,
4527 MACH_MSG_TYPE_MAKE_SEND
);
4528 CHK ("Inserting send right to thread_exception_port", ret
);
4530 /* Allocate message port */
4531 ret
= mach_port_allocate (mach_task_self (),
4532 MACH_PORT_RIGHT_RECEIVE
,
4534 if (ret
!= KERN_SUCCESS
)
4535 warning ("Creating message port %s", mach_error_string (ret
));
4538 char buf
[ MAX_NAME_LEN
];
4539 ret
= mach_port_move_member(mach_task_self (),
4541 inferior_wait_port_set
);
4542 if (ret
!= KERN_SUCCESS
)
4543 warning ("message move member %s", mach_error_string (ret
));
4546 /* @@@@ No way to change message port name currently */
4547 /* Foo. This assumes gdb has a unix pid */
4548 sprintf (buf
, "gdb-%d", getpid ());
4549 gdb_register_port (buf
, our_message_port
);
4552 /* Heap for thread commands */
4553 obstack_init (cproc_obstack
);
4555 add_mach_specific_commands ();