1 /* Darwin support for GDB, the GNU debugger.
2 Copyright (C) 1997-2016 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/sysctl.h>
40 #include "darwin-nat.h"
42 #include <mach/thread_info.h>
43 #include <mach/thread_act.h>
44 #include <mach/task.h>
45 #include <mach/vm_map.h>
46 #include <mach/mach_port.h>
47 #include <mach/mach_init.h>
48 #include <mach/mach_vm.h>
50 #define CHECK_ARGS(what, args) do { \
51 if ((NULL == args) || ((args[0] != '0') && (args[1] != 'x'))) \
52 error(_("%s must be specified with 0x..."), what); \
55 #define PRINT_FIELD(structure, field) \
56 printf_unfiltered(_(#field":\t%#lx\n"), (unsigned long) (structure)->field)
58 #define PRINT_TV_FIELD(structure, field) \
59 printf_unfiltered(_(#field":\t%u.%06u sec\n"), \
60 (unsigned) (structure)->field.seconds, \
61 (unsigned) (structure)->field.microseconds)
63 #define task_self mach_task_self
64 #define task_by_unix_pid task_for_pid
65 #define port_name_array_t mach_port_array_t
66 #define port_type_array_t mach_port_array_t
69 info_mach_tasks_command (char *args, int from_tty)
74 struct kinfo_proc *procInfo;
76 sysControl[0] = CTL_KERN;
77 sysControl[1] = KERN_PROC;
78 sysControl[2] = KERN_PROC_ALL;
80 sysctl (sysControl, 3, NULL, &length, NULL, 0);
81 procInfo = (struct kinfo_proc *) xmalloc (length);
82 sysctl (sysControl, 3, procInfo, &length, NULL, 0);
84 count = (length / sizeof (struct kinfo_proc));
85 printf_unfiltered (_("%d processes:\n"), count);
86 for (index = 0; index < count; ++index)
92 task_by_unix_pid (mach_task_self (), procInfo[index].kp_proc.p_pid,
94 if (KERN_SUCCESS == result)
96 printf_unfiltered (_(" %s is %d has task %#x\n"),
97 procInfo[index].kp_proc.p_comm,
98 procInfo[index].kp_proc.p_pid, taskPort);
102 printf_unfiltered (_(" %s is %d unknown task port\n"),
103 procInfo[index].kp_proc.p_comm,
104 procInfo[index].kp_proc.p_pid);
112 get_task_from_args (char *args)
117 if (args == NULL || *args == 0)
119 if (ptid_equal (inferior_ptid, null_ptid))
120 printf_unfiltered (_("No inferior running\n"));
121 return current_inferior ()->priv->task;
123 if (strcmp (args, "gdb") == 0)
124 return mach_task_self ();
125 task = strtoul (args, &eptr, 0);
128 printf_unfiltered (_("cannot parse task id '%s'\n"), args);
135 info_mach_task_command (char *args, int from_tty)
139 struct task_basic_info basic;
140 struct task_events_info events;
141 struct task_thread_times_info thread_times;
144 kern_return_t result;
145 unsigned int info_count;
148 task = get_task_from_args (args);
149 if (task == TASK_NULL)
152 printf_unfiltered (_("TASK_BASIC_INFO for 0x%x:\n"), task);
153 info_count = TASK_BASIC_INFO_COUNT;
154 result = task_info (task,
156 (task_info_t) & task_info_data.basic, &info_count);
157 MACH_CHECK_ERROR (result);
159 PRINT_FIELD (&task_info_data.basic, suspend_count);
160 PRINT_FIELD (&task_info_data.basic, virtual_size);
161 PRINT_FIELD (&task_info_data.basic, resident_size);
162 PRINT_TV_FIELD (&task_info_data.basic, user_time);
163 PRINT_TV_FIELD (&task_info_data.basic, system_time);
164 printf_unfiltered (_("\nTASK_EVENTS_INFO:\n"));
165 info_count = TASK_EVENTS_INFO_COUNT;
166 result = task_info (task,
168 (task_info_t) & task_info_data.events, &info_count);
169 MACH_CHECK_ERROR (result);
171 PRINT_FIELD (&task_info_data.events, faults);
173 PRINT_FIELD (&task_info_data.events, zero_fills);
174 PRINT_FIELD (&task_info_data.events, reactivations);
176 PRINT_FIELD (&task_info_data.events, pageins);
177 PRINT_FIELD (&task_info_data.events, cow_faults);
178 PRINT_FIELD (&task_info_data.events, messages_sent);
179 PRINT_FIELD (&task_info_data.events, messages_received);
180 printf_unfiltered (_("\nTASK_THREAD_TIMES_INFO:\n"));
181 info_count = TASK_THREAD_TIMES_INFO_COUNT;
182 result = task_info (task,
183 TASK_THREAD_TIMES_INFO,
184 (task_info_t) & task_info_data.thread_times,
186 MACH_CHECK_ERROR (result);
187 PRINT_TV_FIELD (&task_info_data.thread_times, user_time);
188 PRINT_TV_FIELD (&task_info_data.thread_times, system_time);
192 info_mach_ports_command (char *args, int from_tty)
194 port_name_array_t names;
195 port_type_array_t types;
196 unsigned int name_count, type_count;
197 kern_return_t result;
201 task = get_task_from_args (args);
202 if (task == TASK_NULL)
205 result = mach_port_names (task, &names, &name_count, &types, &type_count);
206 MACH_CHECK_ERROR (result);
208 gdb_assert (name_count == type_count);
210 printf_unfiltered (_("Ports for task 0x%x:\n"), task);
211 printf_unfiltered (_("port type\n"));
212 for (index = 0; index < name_count; ++index)
214 mach_port_t port = names[index];
218 mach_port_type_t type;
220 mach_port_right_t right;
222 static struct type_descr descrs[] =
224 {MACH_PORT_TYPE_SEND, "send", MACH_PORT_RIGHT_SEND},
225 {MACH_PORT_TYPE_SEND_ONCE, "send-once", MACH_PORT_RIGHT_SEND_ONCE},
226 {MACH_PORT_TYPE_RECEIVE, "receive", MACH_PORT_RIGHT_RECEIVE},
227 {MACH_PORT_TYPE_PORT_SET, "port-set", MACH_PORT_RIGHT_PORT_SET},
228 {MACH_PORT_TYPE_DEAD_NAME, "dead", MACH_PORT_RIGHT_DEAD_NAME}
231 printf_unfiltered (_("%04x: %08x "), port, types[index]);
232 for (j = 0; j < sizeof(descrs) / sizeof(*descrs); j++)
233 if (types[index] & descrs[j].type)
235 mach_port_urefs_t ref;
238 printf_unfiltered (_(" %s("), descrs[j].name);
239 ret = mach_port_get_refs (task, port, descrs[j].right, &ref);
240 if (ret != KERN_SUCCESS)
241 printf_unfiltered (_("??"));
243 printf_unfiltered (_("%u"), ref);
244 printf_unfiltered (_(" refs)"));
247 if (task == task_self ())
249 if (port == task_self())
250 printf_unfiltered (_(" gdb-task"));
251 else if (port == darwin_host_self)
252 printf_unfiltered (_(" host-self"));
253 else if (port == darwin_ex_port)
254 printf_unfiltered (_(" gdb-exception"));
255 else if (port == darwin_port_set)
256 printf_unfiltered (_(" gdb-port_set"));
257 else if (!ptid_equal (inferior_ptid, null_ptid))
259 struct inferior *inf = current_inferior ();
261 if (port == inf->priv->task)
262 printf_unfiltered (_(" inferior-task"));
263 else if (port == inf->priv->notify_port)
264 printf_unfiltered (_(" inferior-notify"));
270 for (k = 0; k < inf->priv->exception_info.count; k++)
271 if (port == inf->priv->exception_info.ports[k])
273 printf_unfiltered (_(" inferior-excp-port"));
277 if (inf->priv->threads)
280 VEC_iterate(darwin_thread_t,
281 inf->priv->threads, k, t);
283 if (port == t->gdb_port)
285 printf_unfiltered (_(" inferior-thread for 0x%x"),
293 printf_unfiltered (_("\n"));
296 vm_deallocate (task_self (), (vm_address_t) names,
297 (name_count * sizeof (mach_port_t)));
298 vm_deallocate (task_self (), (vm_address_t) types,
299 (type_count * sizeof (mach_port_type_t)));
304 darwin_debug_port_info (task_t task, mach_port_t port)
307 mach_port_status_t status;
308 mach_msg_type_number_t len = sizeof (status);
310 kret = mach_port_get_attributes
311 (task, port, MACH_PORT_RECEIVE_STATUS, (mach_port_info_t)&status, &len);
312 MACH_CHECK_ERROR (kret);
314 printf_unfiltered (_("Port 0x%lx in task 0x%lx:\n"), (unsigned long) port,
315 (unsigned long) task);
316 printf_unfiltered (_(" port set: 0x%x\n"), status.mps_pset);
317 printf_unfiltered (_(" seqno: 0x%x\n"), status.mps_seqno);
318 printf_unfiltered (_(" mscount: 0x%x\n"), status.mps_mscount);
319 printf_unfiltered (_(" qlimit: 0x%x\n"), status.mps_qlimit);
320 printf_unfiltered (_(" msgcount: 0x%x\n"), status.mps_msgcount);
321 printf_unfiltered (_(" sorights: 0x%x\n"), status.mps_sorights);
322 printf_unfiltered (_(" srights: 0x%x\n"), status.mps_srights);
323 printf_unfiltered (_(" pdrequest: 0x%x\n"), status.mps_pdrequest);
324 printf_unfiltered (_(" nsrequest: 0x%x\n"), status.mps_nsrequest);
325 printf_unfiltered (_(" flags: 0x%x\n"), status.mps_flags);
329 info_mach_port_command (char *args, int from_tty)
334 CHECK_ARGS (_("Task and port"), args);
335 sscanf (args, "0x%x 0x%x", &task, &port);
337 darwin_debug_port_info (task, port);
341 info_mach_threads_command (char *args, int from_tty)
343 thread_array_t threads;
344 unsigned int thread_count;
345 kern_return_t result;
349 task = get_task_from_args (args);
350 if (task == TASK_NULL)
353 result = task_threads (task, &threads, &thread_count);
354 MACH_CHECK_ERROR (result);
356 printf_unfiltered (_("Threads in task %#x:\n"), task);
357 for (i = 0; i < thread_count; ++i)
359 printf_unfiltered (_(" %#x\n"), threads[i]);
360 mach_port_deallocate (task_self (), threads[i]);
363 vm_deallocate (task_self (), (vm_address_t) threads,
364 (thread_count * sizeof (thread_t)));
368 info_mach_thread_command (char *args, int from_tty)
372 struct thread_basic_info basic;
376 kern_return_t result;
377 unsigned int info_count;
379 CHECK_ARGS (_("Thread"), args);
380 sscanf (args, "0x%x", &thread);
382 printf_unfiltered (_("THREAD_BASIC_INFO\n"));
383 info_count = THREAD_BASIC_INFO_COUNT;
384 result = thread_info (thread,
386 (thread_info_t) & thread_info_data.basic,
388 MACH_CHECK_ERROR (result);
391 PRINT_FIELD (&thread_info_data.basic, user_time);
392 PRINT_FIELD (&thread_info_data.basic, system_time);
394 PRINT_FIELD (&thread_info_data.basic, cpu_usage);
395 PRINT_FIELD (&thread_info_data.basic, run_state);
396 PRINT_FIELD (&thread_info_data.basic, flags);
397 PRINT_FIELD (&thread_info_data.basic, suspend_count);
398 PRINT_FIELD (&thread_info_data.basic, sleep_time);
402 unparse_protection (vm_prot_t p)
412 case VM_PROT_READ | VM_PROT_WRITE:
414 case VM_PROT_EXECUTE:
416 case VM_PROT_EXECUTE | VM_PROT_READ:
418 case VM_PROT_EXECUTE | VM_PROT_WRITE:
420 case VM_PROT_EXECUTE | VM_PROT_WRITE | VM_PROT_READ:
428 unparse_inheritance (vm_inherit_t i)
432 case VM_INHERIT_SHARE:
434 case VM_INHERIT_COPY:
436 case VM_INHERIT_NONE:
444 unparse_share_mode (unsigned char p)
457 return _("true-shrd");
458 case SM_PRIVATE_ALIASED:
459 return _("prv-alias");
460 case SM_SHARED_ALIASED:
461 return _("shr-alias");
468 unparse_user_tag (unsigned int tag)
474 case VM_MEMORY_MALLOC:
476 case VM_MEMORY_MALLOC_SMALL:
477 return _("malloc_small");
478 case VM_MEMORY_MALLOC_LARGE:
479 return _("malloc_large");
480 case VM_MEMORY_MALLOC_HUGE:
481 return _("malloc_huge");
484 case VM_MEMORY_REALLOC:
486 case VM_MEMORY_MALLOC_TINY:
487 return _("malloc_tiny");
488 case VM_MEMORY_ANALYSIS_TOOL:
489 return _("analysis_tool");
490 case VM_MEMORY_MACH_MSG:
491 return _("mach_msg");
492 case VM_MEMORY_IOKIT:
494 case VM_MEMORY_STACK:
496 case VM_MEMORY_GUARD:
498 case VM_MEMORY_SHARED_PMAP:
499 return _("shared_pmap");
500 case VM_MEMORY_DYLIB:
502 case VM_MEMORY_APPKIT:
504 case VM_MEMORY_FOUNDATION:
505 return _("foundation");
512 darwin_debug_regions (task_t task, mach_vm_address_t address, int max)
515 vm_region_basic_info_data_64_t info, prev_info;
516 mach_vm_address_t prev_address;
517 mach_vm_size_t size, prev_size;
519 mach_port_t object_name;
520 mach_msg_type_number_t count;
525 count = VM_REGION_BASIC_INFO_COUNT_64;
526 kret = mach_vm_region (task, &address, &size, VM_REGION_BASIC_INFO_64,
527 (vm_region_info_t) &info, &count, &object_name);
528 if (kret != KERN_SUCCESS)
530 printf_filtered (_("No memory regions."));
533 memcpy (&prev_info, &info, sizeof (vm_region_basic_info_data_64_t));
534 prev_address = address;
543 address = prev_address + prev_size;
545 /* Check to see if address space has wrapped around. */
551 count = VM_REGION_BASIC_INFO_COUNT_64;
553 mach_vm_region (task, &address, &size, VM_REGION_BASIC_INFO_64,
554 (vm_region_info_t) &info, &count, &object_name);
555 if (kret != KERN_SUCCESS)
562 if (address != prev_address + prev_size)
565 if ((info.protection != prev_info.protection)
566 || (info.max_protection != prev_info.max_protection)
567 || (info.inheritance != prev_info.inheritance)
568 || (info.shared != prev_info.reserved)
569 || (info.reserved != prev_info.reserved))
574 printf_filtered (_("%s-%s %s/%s %s %s %s"),
575 paddress (target_gdbarch (), prev_address),
576 paddress (target_gdbarch (), prev_address + prev_size),
577 unparse_protection (prev_info.protection),
578 unparse_protection (prev_info.max_protection),
579 unparse_inheritance (prev_info.inheritance),
580 prev_info.shared ? _("shrd") : _("priv"),
581 prev_info.reserved ? _("reserved") : _("not-rsvd"));
584 printf_filtered (_(" (%d sub-rgn)"), nsubregions);
586 printf_filtered (_("\n"));
588 prev_address = address;
590 memcpy (&prev_info, &info, sizeof (vm_region_basic_info_data_64_t));
601 if ((max > 0) && (num_printed >= max))
610 darwin_debug_regions_recurse (task_t task)
612 mach_vm_address_t r_addr;
613 mach_vm_address_t r_start;
614 mach_vm_size_t r_size;
616 mach_msg_type_number_t r_info_size;
617 vm_region_submap_short_info_data_64_t r_info;
620 struct cleanup *table_chain;
621 struct ui_out *uiout = current_uiout;
623 table_chain = make_cleanup_ui_out_table_begin_end (uiout, 9, -1, "regions");
625 if (gdbarch_addr_bit (target_gdbarch ()) <= 32)
627 ui_out_table_header (uiout, 10, ui_left, "start", "Start");
628 ui_out_table_header (uiout, 10, ui_left, "end", "End");
632 ui_out_table_header (uiout, 18, ui_left, "start", "Start");
633 ui_out_table_header (uiout, 18, ui_left, "end", "End");
635 ui_out_table_header (uiout, 3, ui_left, "min-prot", "Min");
636 ui_out_table_header (uiout, 3, ui_left, "max-prot", "Max");
637 ui_out_table_header (uiout, 5, ui_left, "inheritence", "Inh");
638 ui_out_table_header (uiout, 9, ui_left, "share-mode", "Shr");
639 ui_out_table_header (uiout, 1, ui_left, "depth", "D");
640 ui_out_table_header (uiout, 3, ui_left, "submap", "Sm");
641 ui_out_table_header (uiout, 0, ui_noalign, "tag", "Tag");
643 ui_out_table_body (uiout);
650 struct cleanup *row_chain;
652 r_info_size = VM_REGION_SUBMAP_SHORT_INFO_COUNT_64;
654 kret = mach_vm_region_recurse (task, &r_start, &r_size, &r_depth,
655 (vm_region_recurse_info_t) &r_info,
657 if (kret != KERN_SUCCESS)
659 row_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "regions-row");
661 ui_out_field_core_addr (uiout, "start", target_gdbarch (), r_start);
662 ui_out_field_core_addr (uiout, "end", target_gdbarch (), r_start + r_size);
663 ui_out_field_string (uiout, "min-prot",
664 unparse_protection (r_info.protection));
665 ui_out_field_string (uiout, "max-prot",
666 unparse_protection (r_info.max_protection));
667 ui_out_field_string (uiout, "inheritence",
668 unparse_inheritance (r_info.inheritance));
669 ui_out_field_string (uiout, "share-mode",
670 unparse_share_mode (r_info.share_mode));
671 ui_out_field_int (uiout, "depth", r_depth);
672 ui_out_field_string (uiout, "submap",
673 r_info.is_submap ? _("sm ") : _("obj"));
674 tag = unparse_user_tag (r_info.user_tag);
676 ui_out_field_string (uiout, "tag", tag);
678 ui_out_field_int (uiout, "tag", r_info.user_tag);
680 do_cleanups (row_chain);
682 if (!ui_out_is_mi_like_p (uiout))
683 ui_out_text (uiout, "\n");
685 if (r_info.is_submap)
690 do_cleanups (table_chain);
696 darwin_debug_region (task_t task, mach_vm_address_t address)
698 darwin_debug_regions (task, address, 1);
702 info_mach_regions_command (char *args, int from_tty)
706 task = get_task_from_args (args);
707 if (task == TASK_NULL)
710 darwin_debug_regions (task, 0, -1);
714 info_mach_regions_recurse_command (char *args, int from_tty)
718 task = get_task_from_args (args);
719 if (task == TASK_NULL)
722 darwin_debug_regions_recurse (task);
726 info_mach_region_command (char *exp, int from_tty)
728 struct expression *expr;
730 mach_vm_address_t address;
731 struct inferior *inf;
733 expr = parse_expression (exp);
734 val = evaluate_expression (expr);
735 if (TYPE_CODE (value_type (val)) == TYPE_CODE_REF)
737 val = value_ind (val);
739 address = value_as_address (val);
741 if (ptid_equal (inferior_ptid, null_ptid))
742 error (_("Inferior not available"));
744 inf = current_inferior ();
745 darwin_debug_region (inf->priv->task, address);
749 disp_exception (const darwin_exception_info *info)
753 printf_filtered (_("%d exceptions:\n"), info->count);
754 for (i = 0; i < info->count; i++)
756 exception_mask_t mask = info->masks[i];
758 printf_filtered (_("port 0x%04x, behavior: "), info->ports[i]);
759 switch (info->behaviors[i])
761 case EXCEPTION_DEFAULT:
762 printf_unfiltered (_("default"));
764 case EXCEPTION_STATE:
765 printf_unfiltered (_("state"));
767 case EXCEPTION_STATE_IDENTITY:
768 printf_unfiltered (_("state-identity"));
771 printf_unfiltered (_("0x%x"), info->behaviors[i]);
773 printf_unfiltered (_(", masks:"));
774 if (mask & EXC_MASK_BAD_ACCESS)
775 printf_unfiltered (_(" BAD_ACCESS"));
776 if (mask & EXC_MASK_BAD_INSTRUCTION)
777 printf_unfiltered (_(" BAD_INSTRUCTION"));
778 if (mask & EXC_MASK_ARITHMETIC)
779 printf_unfiltered (_(" ARITHMETIC"));
780 if (mask & EXC_MASK_EMULATION)
781 printf_unfiltered (_(" EMULATION"));
782 if (mask & EXC_MASK_SOFTWARE)
783 printf_unfiltered (_(" SOFTWARE"));
784 if (mask & EXC_MASK_BREAKPOINT)
785 printf_unfiltered (_(" BREAKPOINT"));
786 if (mask & EXC_MASK_SYSCALL)
787 printf_unfiltered (_(" SYSCALL"));
788 if (mask & EXC_MASK_MACH_SYSCALL)
789 printf_unfiltered (_(" MACH_SYSCALL"));
790 if (mask & EXC_MASK_RPC_ALERT)
791 printf_unfiltered (_(" RPC_ALERT"));
792 if (mask & EXC_MASK_CRASH)
793 printf_unfiltered (_(" CRASH"));
794 printf_unfiltered (_("\n"));
799 info_mach_exceptions_command (char *args, int from_tty)
804 darwin_exception_info info;
806 info.count = sizeof (info.ports) / sizeof (info.ports[0]);
810 if (strcmp (args, "saved") == 0)
812 if (ptid_equal (inferior_ptid, null_ptid))
813 printf_unfiltered (_("No inferior running\n"));
814 disp_exception (¤t_inferior ()->priv->exception_info);
817 else if (strcmp (args, "host") == 0)
819 /* FIXME: This need a privilegied host port! */
820 kret = host_get_exception_ports
821 (darwin_host_self, EXC_MASK_ALL, info.masks,
822 &info.count, info.ports, info.behaviors, info.flavors);
823 MACH_CHECK_ERROR (kret);
824 disp_exception (&info);
827 error (_("Parameter is saved, host or none"));
831 struct inferior *inf;
833 if (ptid_equal (inferior_ptid, null_ptid))
834 printf_unfiltered (_("No inferior running\n"));
835 inf = current_inferior ();
837 kret = task_get_exception_ports
838 (inf->priv->task, EXC_MASK_ALL, info.masks,
839 &info.count, info.ports, info.behaviors, info.flavors);
840 MACH_CHECK_ERROR (kret);
841 disp_exception (&info);
845 /* -Wmissing-prototypes */
846 extern initialize_file_ftype _initialize_darwin_info_commands;
849 _initialize_darwin_info_commands (void)
851 add_info ("mach-tasks", info_mach_tasks_command,
852 _("Get list of tasks in system."));
853 add_info ("mach-ports", info_mach_ports_command,
854 _("Get list of ports in a task."));
855 add_info ("mach-port", info_mach_port_command,
856 _("Get info on a specific port."));
857 add_info ("mach-task", info_mach_task_command,
858 _("Get info on a specific task."));
859 add_info ("mach-threads", info_mach_threads_command,
860 _("Get list of threads in a task."));
861 add_info ("mach-thread", info_mach_thread_command,
862 _("Get info on a specific thread."));
864 add_info ("mach-regions", info_mach_regions_command,
865 _("Get information on all mach region for the task."));
866 add_info ("mach-regions-rec", info_mach_regions_recurse_command,
867 _("Get information on all mach sub region for the task."));
868 add_info ("mach-region", info_mach_region_command,
869 _("Get information on mach region at given address."));
871 add_info ("mach-exceptions", info_mach_exceptions_command,
872 _("Disp mach exceptions."));