1 /* Darwin support for GDB, the GNU debugger.
2 Copyright 1997-2002, 2008-2012 Free Software Foundation, Inc.
4 Contributed by Apple Computer, 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 3 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, see <http://www.gnu.org/licenses/>. */
21 /* The name of the ppc_thread_state structure, and the names of its
22 members, have been changed for Unix conformance reasons. The easiest
23 way to have gdb build on systems with the older names and systems
24 with the newer names is to build this compilation unit with the
25 non-conformant define below. This doesn't seem to cause the resulting
26 binary any problems but it seems like it could cause us problems in
27 the future. It'd be good to remove this at some point when compiling on
28 Tiger is no longer important. */
38 #include <sys/param.h>
39 #include <sys/sysctl.h>
41 #include "darwin-nat.h"
43 #include <mach/thread_info.h>
44 #include <mach/thread_act.h>
45 #include <mach/task.h>
46 #include <mach/vm_map.h>
47 #include <mach/mach_port.h>
48 #include <mach/mach_init.h>
49 #include <mach/mach_vm.h>
51 #define CHECK_ARGS(what, args) do { \
52 if ((NULL == args) || ((args[0] != '0') && (args[1] != 'x'))) \
53 error(_("%s must be specified with 0x..."), what); \
56 #define PRINT_FIELD(structure, field) \
57 printf_unfiltered(_(#field":\t%#lx\n"), (unsigned long) (structure)->field)
59 #define PRINT_TV_FIELD(structure, field) \
60 printf_unfiltered(_(#field":\t%u.%06u sec\n"), \
61 (unsigned) (structure)->field.seconds, \
62 (unsigned) (structure)->field.microseconds)
64 #define task_self mach_task_self
65 #define task_by_unix_pid task_for_pid
66 #define port_name_array_t mach_port_array_t
67 #define port_type_array_t mach_port_array_t
70 info_mach_tasks_command (char *args, int from_tty)
75 struct kinfo_proc *procInfo;
77 sysControl[0] = CTL_KERN;
78 sysControl[1] = KERN_PROC;
79 sysControl[2] = KERN_PROC_ALL;
81 sysctl (sysControl, 3, NULL, &length, NULL, 0);
82 procInfo = (struct kinfo_proc *) xmalloc (length);
83 sysctl (sysControl, 3, procInfo, &length, NULL, 0);
85 count = (length / sizeof (struct kinfo_proc));
86 printf_unfiltered (_("%d processes:\n"), count);
87 for (index = 0; index < count; ++index)
93 task_by_unix_pid (mach_task_self (), procInfo[index].kp_proc.p_pid,
95 if (KERN_SUCCESS == result)
97 printf_unfiltered (_(" %s is %d has task %#x\n"),
98 procInfo[index].kp_proc.p_comm,
99 procInfo[index].kp_proc.p_pid, taskPort);
103 printf_unfiltered (_(" %s is %d unknown task port\n"),
104 procInfo[index].kp_proc.p_comm,
105 procInfo[index].kp_proc.p_pid);
113 get_task_from_args (char *args)
118 if (args == NULL || *args == 0)
120 if (ptid_equal (inferior_ptid, null_ptid))
121 printf_unfiltered (_("No inferior running\n"));
122 return current_inferior ()->private->task;
124 if (strcmp (args, "gdb") == 0)
125 return mach_task_self ();
126 task = strtoul (args, &eptr, 0);
129 printf_unfiltered (_("cannot parse task id '%s'\n"), args);
136 info_mach_task_command (char *args, int from_tty)
140 struct task_basic_info basic;
141 struct task_events_info events;
142 struct task_thread_times_info thread_times;
145 kern_return_t result;
146 unsigned int info_count;
149 task = get_task_from_args (args);
150 if (task == TASK_NULL)
153 printf_unfiltered (_("TASK_BASIC_INFO for 0x%x:\n"), task);
154 info_count = TASK_BASIC_INFO_COUNT;
155 result = task_info (task,
157 (task_info_t) & task_info_data.basic, &info_count);
158 MACH_CHECK_ERROR (result);
160 PRINT_FIELD (&task_info_data.basic, suspend_count);
161 PRINT_FIELD (&task_info_data.basic, virtual_size);
162 PRINT_FIELD (&task_info_data.basic, resident_size);
163 PRINT_TV_FIELD (&task_info_data.basic, user_time);
164 PRINT_TV_FIELD (&task_info_data.basic, system_time);
165 printf_unfiltered (_("\nTASK_EVENTS_INFO:\n"));
166 info_count = TASK_EVENTS_INFO_COUNT;
167 result = task_info (task,
169 (task_info_t) & task_info_data.events, &info_count);
170 MACH_CHECK_ERROR (result);
172 PRINT_FIELD (&task_info_data.events, faults);
174 PRINT_FIELD (&task_info_data.events, zero_fills);
175 PRINT_FIELD (&task_info_data.events, reactivations);
177 PRINT_FIELD (&task_info_data.events, pageins);
178 PRINT_FIELD (&task_info_data.events, cow_faults);
179 PRINT_FIELD (&task_info_data.events, messages_sent);
180 PRINT_FIELD (&task_info_data.events, messages_received);
181 printf_unfiltered (_("\nTASK_THREAD_TIMES_INFO:\n"));
182 info_count = TASK_THREAD_TIMES_INFO_COUNT;
183 result = task_info (task,
184 TASK_THREAD_TIMES_INFO,
185 (task_info_t) & task_info_data.thread_times,
187 MACH_CHECK_ERROR (result);
188 PRINT_TV_FIELD (&task_info_data.thread_times, user_time);
189 PRINT_TV_FIELD (&task_info_data.thread_times, system_time);
193 info_mach_ports_command (char *args, int from_tty)
195 port_name_array_t names;
196 port_type_array_t types;
197 unsigned int name_count, type_count;
198 kern_return_t result;
202 task = get_task_from_args (args);
203 if (task == TASK_NULL)
206 result = mach_port_names (task, &names, &name_count, &types, &type_count);
207 MACH_CHECK_ERROR (result);
209 gdb_assert (name_count == type_count);
211 printf_unfiltered (_("Ports for task 0x%x:\n"), task);
212 printf_unfiltered (_("port type\n"));
213 for (index = 0; index < name_count; ++index)
215 mach_port_t port = names[index];
219 mach_port_type_t type;
221 mach_port_right_t right;
223 static struct type_descr descrs[] =
225 {MACH_PORT_TYPE_SEND, "send", MACH_PORT_RIGHT_SEND},
226 {MACH_PORT_TYPE_SEND_ONCE, "send-once", MACH_PORT_RIGHT_SEND_ONCE},
227 {MACH_PORT_TYPE_RECEIVE, "receive", MACH_PORT_RIGHT_RECEIVE},
228 {MACH_PORT_TYPE_PORT_SET, "port-set", MACH_PORT_RIGHT_PORT_SET},
229 {MACH_PORT_TYPE_DEAD_NAME, "dead", MACH_PORT_RIGHT_DEAD_NAME}
232 printf_unfiltered (_("%04x: %08x "), port, types[index]);
233 for (j = 0; j < sizeof(descrs) / sizeof(*descrs); j++)
234 if (types[index] & descrs[j].type)
236 mach_port_urefs_t ref;
239 printf_unfiltered (_(" %s("), descrs[j].name);
240 ret = mach_port_get_refs (task, port, descrs[j].right, &ref);
241 if (ret != KERN_SUCCESS)
242 printf_unfiltered (_("??"));
244 printf_unfiltered (_("%u"), ref);
245 printf_unfiltered (_(" refs)"));
248 if (task == task_self ())
250 if (port == task_self())
251 printf_unfiltered (_(" gdb-task"));
252 else if (port == darwin_host_self)
253 printf_unfiltered (_(" host-self"));
254 else if (port == darwin_ex_port)
255 printf_unfiltered (_(" gdb-exception"));
256 else if (port == darwin_port_set)
257 printf_unfiltered (_(" gdb-port_set"));
258 else if (!ptid_equal (inferior_ptid, null_ptid))
260 struct inferior *inf = current_inferior ();
262 if (port == inf->private->task)
263 printf_unfiltered (_(" inferior-task"));
264 else if (port == inf->private->notify_port)
265 printf_unfiltered (_(" inferior-notify"));
271 for (k = 0; k < inf->private->exception_info.count; k++)
272 if (port == inf->private->exception_info.ports[k])
274 printf_unfiltered (_(" inferior-excp-port"));
278 if (inf->private->threads)
281 VEC_iterate(darwin_thread_t,
282 inf->private->threads, k, t);
284 if (port == t->gdb_port)
286 printf_unfiltered (_(" inferior-thread for 0x%x"),
294 printf_unfiltered (_("\n"));
297 vm_deallocate (task_self (), (vm_address_t) names,
298 (name_count * sizeof (mach_port_t)));
299 vm_deallocate (task_self (), (vm_address_t) types,
300 (type_count * sizeof (mach_port_type_t)));
305 darwin_debug_port_info (task_t task, mach_port_t port)
308 mach_port_status_t status;
309 mach_msg_type_number_t len = sizeof (status);
311 kret = mach_port_get_attributes
312 (task, port, MACH_PORT_RECEIVE_STATUS, (mach_port_info_t)&status, &len);
313 MACH_CHECK_ERROR (kret);
315 printf_unfiltered (_("Port 0x%lx in task 0x%lx:\n"), (unsigned long) port,
316 (unsigned long) task);
317 printf_unfiltered (_(" port set: 0x%x\n"), status.mps_pset);
318 printf_unfiltered (_(" seqno: 0x%x\n"), status.mps_seqno);
319 printf_unfiltered (_(" mscount: 0x%x\n"), status.mps_mscount);
320 printf_unfiltered (_(" qlimit: 0x%x\n"), status.mps_qlimit);
321 printf_unfiltered (_(" msgcount: 0x%x\n"), status.mps_msgcount);
322 printf_unfiltered (_(" sorights: 0x%x\n"), status.mps_sorights);
323 printf_unfiltered (_(" srights: 0x%x\n"), status.mps_srights);
324 printf_unfiltered (_(" pdrequest: 0x%x\n"), status.mps_pdrequest);
325 printf_unfiltered (_(" nsrequest: 0x%x\n"), status.mps_nsrequest);
326 printf_unfiltered (_(" flags: 0x%x\n"), status.mps_flags);
330 info_mach_port_command (char *args, int from_tty)
335 CHECK_ARGS (_("Task and port"), args);
336 sscanf (args, "0x%x 0x%x", &task, &port);
338 darwin_debug_port_info (task, port);
342 info_mach_threads_command (char *args, int from_tty)
344 thread_array_t threads;
345 unsigned int thread_count;
346 kern_return_t result;
350 task = get_task_from_args (args);
351 if (task == TASK_NULL)
354 result = task_threads (task, &threads, &thread_count);
355 MACH_CHECK_ERROR (result);
357 printf_unfiltered (_("Threads in task %#x:\n"), task);
358 for (i = 0; i < thread_count; ++i)
360 printf_unfiltered (_(" %#x\n"), threads[i]);
361 mach_port_deallocate (task_self (), threads[i]);
364 vm_deallocate (task_self (), (vm_address_t) threads,
365 (thread_count * sizeof (thread_t)));
369 info_mach_thread_command (char *args, int from_tty)
373 struct thread_basic_info basic;
377 kern_return_t result;
378 unsigned int info_count;
380 CHECK_ARGS (_("Thread"), args);
381 sscanf (args, "0x%x", &thread);
383 printf_unfiltered (_("THREAD_BASIC_INFO\n"));
384 info_count = THREAD_BASIC_INFO_COUNT;
385 result = thread_info (thread,
387 (thread_info_t) & thread_info_data.basic,
389 MACH_CHECK_ERROR (result);
392 PRINT_FIELD (&thread_info_data.basic, user_time);
393 PRINT_FIELD (&thread_info_data.basic, system_time);
395 PRINT_FIELD (&thread_info_data.basic, cpu_usage);
396 PRINT_FIELD (&thread_info_data.basic, run_state);
397 PRINT_FIELD (&thread_info_data.basic, flags);
398 PRINT_FIELD (&thread_info_data.basic, suspend_count);
399 PRINT_FIELD (&thread_info_data.basic, sleep_time);
403 unparse_protection (vm_prot_t p)
413 case VM_PROT_READ | VM_PROT_WRITE:
415 case VM_PROT_EXECUTE:
417 case VM_PROT_EXECUTE | VM_PROT_READ:
419 case VM_PROT_EXECUTE | VM_PROT_WRITE:
421 case VM_PROT_EXECUTE | VM_PROT_WRITE | VM_PROT_READ:
429 unparse_inheritance (vm_inherit_t i)
433 case VM_INHERIT_SHARE:
435 case VM_INHERIT_COPY:
437 case VM_INHERIT_NONE:
445 unparse_share_mode (unsigned char p)
458 return _("true-shrd");
459 case SM_PRIVATE_ALIASED:
460 return _("prv-alias");
461 case SM_SHARED_ALIASED:
462 return _("shr-alias");
469 unparse_user_tag (unsigned int tag)
475 case VM_MEMORY_MALLOC:
477 case VM_MEMORY_MALLOC_SMALL:
478 return _("malloc_small");
479 case VM_MEMORY_MALLOC_LARGE:
480 return _("malloc_large");
481 case VM_MEMORY_MALLOC_HUGE:
482 return _("malloc_huge");
485 case VM_MEMORY_REALLOC:
487 case VM_MEMORY_MALLOC_TINY:
488 return _("malloc_tiny");
489 case VM_MEMORY_ANALYSIS_TOOL:
490 return _("analysis_tool");
491 case VM_MEMORY_MACH_MSG:
492 return _("mach_msg");
493 case VM_MEMORY_IOKIT:
495 case VM_MEMORY_STACK:
497 case VM_MEMORY_GUARD:
499 case VM_MEMORY_SHARED_PMAP:
500 return _("shared_pmap");
501 case VM_MEMORY_DYLIB:
503 case VM_MEMORY_APPKIT:
505 case VM_MEMORY_FOUNDATION:
506 return _("foundation");
513 darwin_debug_regions (task_t task, mach_vm_address_t address, int max)
516 vm_region_basic_info_data_64_t info, prev_info;
517 mach_vm_address_t prev_address;
518 mach_vm_size_t size, prev_size;
520 mach_port_t object_name;
521 mach_msg_type_number_t count;
526 count = VM_REGION_BASIC_INFO_COUNT_64;
527 kret = mach_vm_region (task, &address, &size, VM_REGION_BASIC_INFO_64,
528 (vm_region_info_t) &info, &count, &object_name);
529 if (kret != KERN_SUCCESS)
531 printf_filtered (_("No memory regions."));
534 memcpy (&prev_info, &info, sizeof (vm_region_basic_info_data_64_t));
535 prev_address = address;
544 address = prev_address + prev_size;
546 /* Check to see if address space has wrapped around. */
552 count = VM_REGION_BASIC_INFO_COUNT_64;
554 mach_vm_region (task, &address, &size, VM_REGION_BASIC_INFO_64,
555 (vm_region_info_t) &info, &count, &object_name);
556 if (kret != KERN_SUCCESS)
563 if (address != prev_address + prev_size)
566 if ((info.protection != prev_info.protection)
567 || (info.max_protection != prev_info.max_protection)
568 || (info.inheritance != prev_info.inheritance)
569 || (info.shared != prev_info.reserved)
570 || (info.reserved != prev_info.reserved))
575 printf_filtered (_("%s-%s %s/%s %s %s %s"),
576 paddress (target_gdbarch, prev_address),
577 paddress (target_gdbarch, prev_address + prev_size),
578 unparse_protection (prev_info.protection),
579 unparse_protection (prev_info.max_protection),
580 unparse_inheritance (prev_info.inheritance),
581 prev_info.shared ? _("shrd") : _("priv"),
582 prev_info.reserved ? _("reserved") : _("not-rsvd"));
585 printf_filtered (_(" (%d sub-rgn)"), nsubregions);
587 printf_filtered (_("\n"));
589 prev_address = address;
591 memcpy (&prev_info, &info, sizeof (vm_region_basic_info_data_64_t));
602 if ((max > 0) && (num_printed >= max))
611 darwin_debug_regions_recurse (task_t task)
613 mach_vm_address_t r_addr;
614 mach_vm_address_t r_start;
615 mach_vm_size_t r_size;
617 mach_msg_type_number_t r_info_size;
618 vm_region_submap_short_info_data_64_t r_info;
621 struct cleanup *table_chain;
622 struct ui_out *uiout = current_uiout;
624 table_chain = make_cleanup_ui_out_table_begin_end (uiout, 9, -1, "regions");
626 if (gdbarch_addr_bit (target_gdbarch) <= 32)
628 ui_out_table_header (uiout, 10, ui_left, "start", "Start");
629 ui_out_table_header (uiout, 10, ui_left, "end", "End");
633 ui_out_table_header (uiout, 18, ui_left, "start", "Start");
634 ui_out_table_header (uiout, 18, ui_left, "end", "End");
636 ui_out_table_header (uiout, 3, ui_left, "min-prot", "Min");
637 ui_out_table_header (uiout, 3, ui_left, "max-prot", "Max");
638 ui_out_table_header (uiout, 5, ui_left, "inheritence", "Inh");
639 ui_out_table_header (uiout, 9, ui_left, "share-mode", "Shr");
640 ui_out_table_header (uiout, 1, ui_left, "depth", "D");
641 ui_out_table_header (uiout, 3, ui_left, "submap", "Sm");
642 ui_out_table_header (uiout, 0, ui_noalign, "tag", "Tag");
644 ui_out_table_body (uiout);
651 struct cleanup *row_chain;
653 r_info_size = VM_REGION_SUBMAP_SHORT_INFO_COUNT_64;
655 kret = mach_vm_region_recurse (task, &r_start, &r_size, &r_depth,
656 (vm_region_recurse_info_t) &r_info,
658 if (kret != KERN_SUCCESS)
660 row_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "regions-row");
662 ui_out_field_core_addr (uiout, "start", target_gdbarch, r_start);
663 ui_out_field_core_addr (uiout, "end", target_gdbarch, r_start + r_size);
664 ui_out_field_string (uiout, "min-prot",
665 unparse_protection (r_info.protection));
666 ui_out_field_string (uiout, "max-prot",
667 unparse_protection (r_info.max_protection));
668 ui_out_field_string (uiout, "inheritence",
669 unparse_inheritance (r_info.inheritance));
670 ui_out_field_string (uiout, "share-mode",
671 unparse_share_mode (r_info.share_mode));
672 ui_out_field_int (uiout, "depth", r_depth);
673 ui_out_field_string (uiout, "submap",
674 r_info.is_submap ? _("sm ") : _("obj"));
675 tag = unparse_user_tag (r_info.user_tag);
677 ui_out_field_string (uiout, "tag", tag);
679 ui_out_field_int (uiout, "tag", r_info.user_tag);
681 do_cleanups (row_chain);
683 if (!ui_out_is_mi_like_p (uiout))
684 ui_out_text (uiout, "\n");
686 if (r_info.is_submap)
691 do_cleanups (table_chain);
697 darwin_debug_region (task_t task, mach_vm_address_t address)
699 darwin_debug_regions (task, address, 1);
703 info_mach_regions_command (char *args, int from_tty)
707 task = get_task_from_args (args);
708 if (task == TASK_NULL)
711 darwin_debug_regions (task, 0, -1);
715 info_mach_regions_recurse_command (char *args, int from_tty)
719 task = get_task_from_args (args);
720 if (task == TASK_NULL)
723 darwin_debug_regions_recurse (task);
727 info_mach_region_command (char *exp, int from_tty)
729 struct expression *expr;
731 mach_vm_address_t address;
732 struct inferior *inf;
734 expr = parse_expression (exp);
735 val = evaluate_expression (expr);
736 if (TYPE_CODE (value_type (val)) == TYPE_CODE_REF)
738 val = value_ind (val);
740 address = value_as_address (val);
742 if (ptid_equal (inferior_ptid, null_ptid))
743 error (_("Inferior not available"));
745 inf = current_inferior ();
746 darwin_debug_region (inf->private->task, address);
750 disp_exception (const darwin_exception_info *info)
754 printf_filtered (_("%d exceptions:\n"), info->count);
755 for (i = 0; i < info->count; i++)
757 exception_mask_t mask = info->masks[i];
759 printf_filtered (_("port 0x%04x, behavior: "), info->ports[i]);
760 switch (info->behaviors[i])
762 case EXCEPTION_DEFAULT:
763 printf_unfiltered (_("default"));
765 case EXCEPTION_STATE:
766 printf_unfiltered (_("state"));
768 case EXCEPTION_STATE_IDENTITY:
769 printf_unfiltered (_("state-identity"));
772 printf_unfiltered (_("0x%x"), info->behaviors[i]);
774 printf_unfiltered (_(", masks:"));
775 if (mask & EXC_MASK_BAD_ACCESS)
776 printf_unfiltered (_(" BAD_ACCESS"));
777 if (mask & EXC_MASK_BAD_INSTRUCTION)
778 printf_unfiltered (_(" BAD_INSTRUCTION"));
779 if (mask & EXC_MASK_ARITHMETIC)
780 printf_unfiltered (_(" ARITHMETIC"));
781 if (mask & EXC_MASK_EMULATION)
782 printf_unfiltered (_(" EMULATION"));
783 if (mask & EXC_MASK_SOFTWARE)
784 printf_unfiltered (_(" SOFTWARE"));
785 if (mask & EXC_MASK_BREAKPOINT)
786 printf_unfiltered (_(" BREAKPOINT"));
787 if (mask & EXC_MASK_SYSCALL)
788 printf_unfiltered (_(" SYSCALL"));
789 if (mask & EXC_MASK_MACH_SYSCALL)
790 printf_unfiltered (_(" MACH_SYSCALL"));
791 if (mask & EXC_MASK_RPC_ALERT)
792 printf_unfiltered (_(" RPC_ALERT"));
793 if (mask & EXC_MASK_CRASH)
794 printf_unfiltered (_(" CRASH"));
795 printf_unfiltered (_("\n"));
800 info_mach_exceptions_command (char *args, int from_tty)
805 darwin_exception_info info;
807 info.count = sizeof (info.ports) / sizeof (info.ports[0]);
811 if (strcmp (args, "saved") == 0)
813 if (ptid_equal (inferior_ptid, null_ptid))
814 printf_unfiltered (_("No inferior running\n"));
815 disp_exception (¤t_inferior ()->private->exception_info);
818 else if (strcmp (args, "host") == 0)
820 /* FIXME: This need a privilegied host port! */
821 kret = host_get_exception_ports
822 (darwin_host_self, EXC_MASK_ALL, info.masks,
823 &info.count, info.ports, info.behaviors, info.flavors);
824 MACH_CHECK_ERROR (kret);
825 disp_exception (&info);
828 error (_("Parameter is saved, host or none"));
832 struct inferior *inf;
834 if (ptid_equal (inferior_ptid, null_ptid))
835 printf_unfiltered (_("No inferior running\n"));
836 inf = current_inferior ();
838 kret = task_get_exception_ports
839 (inf->private->task, EXC_MASK_ALL, info.masks,
840 &info.count, info.ports, info.behaviors, info.flavors);
841 MACH_CHECK_ERROR (kret);
842 disp_exception (&info);
846 /* -Wmissing-prototypes */
847 extern initialize_file_ftype _initialize_darwin_info_commands;
850 _initialize_darwin_info_commands (void)
852 add_info ("mach-tasks", info_mach_tasks_command,
853 _("Get list of tasks in system."));
854 add_info ("mach-ports", info_mach_ports_command,
855 _("Get list of ports in a task."));
856 add_info ("mach-port", info_mach_port_command,
857 _("Get info on a specific port."));
858 add_info ("mach-task", info_mach_task_command,
859 _("Get info on a specific task."));
860 add_info ("mach-threads", info_mach_threads_command,
861 _("Get list of threads in a task."));
862 add_info ("mach-thread", info_mach_thread_command,
863 _("Get info on a specific thread."));
865 add_info ("mach-regions", info_mach_regions_command,
866 _("Get information on all mach region for the task."));
867 add_info ("mach-regions-rec", info_mach_regions_recurse_command,
868 _("Get information on all mach sub region for the task."));
869 add_info ("mach-region", info_mach_region_command,
870 _("Get information on mach region at given address."));
872 add_info ("mach-exceptions", info_mach_exceptions_command,
873 _("Disp mach exceptions."));