xref: /xnu-11417.140.69/osfmk/kern/syscall_sw.c (revision 43a90889846e00bfb5cf1d255cdc0a701a1e05a4) 
1 /*
2  * Copyright (c) 2000-2005, 2020 Apple Computer, Inc. All rights reserved.
3  *
4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5  *
6  * This file contains Original Code and/or Modifications of Original Code
7  * as defined in and that are subject to the Apple Public Source License
8  * Version 2.0 (the 'License'). You may not use this file except in
9  * compliance with the License. The rights granted to you under the License
10  * may not be used to create, or enable the creation or redistribution of,
11  * unlawful or unlicensed copies of an Apple operating system, or to
12  * circumvent, violate, or enable the circumvention or violation of, any
13  * terms of an Apple operating system software license agreement.
14  *
15  * Please obtain a copy of the License at
16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17  *
18  * The Original Code and all software distributed under the License are
19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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23  * Please see the License for the specific language governing rights and
24  * limitations under the License.
25  *
26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27  */
28 /*
29  * @OSF_COPYRIGHT@
30  */
31 /*
32  * Mach Operating System
33  * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
34  * All Rights Reserved.
35  *
36  * Permission to use, copy, modify and distribute this software and its
37  * documentation is hereby granted, provided that both the copyright
38  * notice and this permission notice appear in all copies of the
39  * software, derivative works or modified versions, and any portions
40  * thereof, and that both notices appear in supporting documentation.
41  *
42  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
43  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
44  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
45  *
46  * Carnegie Mellon requests users of this software to return to
47  *
48  *  Software Distribution Coordinator  or  [email protected]
49  *  School of Computer Science
50  *  Carnegie Mellon University
51  *  Pittsburgh PA 15213-3890
52  *
53  * any improvements or extensions that they make and grant Carnegie Mellon
54  * the rights to redistribute these changes.
55  */
56 /*
57  */
58 
59 #include <mach/mach_types.h>
60 #include <mach/mach_traps.h>
61 
62 #include <kern/syscall_sw.h>
63 #if CONFIG_REQUIRES_U32_MUNGING
64 #include <sys/munge.h>
65 #endif
66 
67 /* Forwards */
68 
69 
70 /*
71  *	To add a new entry:
72  *		Add an "MACH_TRAP(routine, arg_count, num_32_bit_words, munge_routine)" to the table below.
73  *		where,
74  *		- routine:		The trap handling routine in the kernel
75  *		- arg_count:		The number of arguments for the mach trap (independant of arch/arg size).
76  *					This value also defines the number of 64-bit words copied in for a U64 process.
77  *		- num_32_bit_words:	The number of 32-bit words to be copied in for a U32 process.
78  *		- munge_routine:	The argument munging routine to align input args correctly.
79  *
80  *		Also, add trap definition to mach/syscall_sw.h and
81  *		recompile user library.
82  *
83  *
84  * WARNING:	If you add a trap which requires more than 7
85  *		parameters, mach/{machine}/syscall_sw.h and {machine}/trap.c
86  *		and/or {machine}/locore.s may need to be modified for it
87  *		to work successfully.
88  *
89  * WARNING:	Don't use numbers 0 through -9.  They (along with
90  *		the positive numbers) are reserved for Unix.
91  */
92 
93 int kern_invalid_debug = 0;
94 
95 /* Include declarations of the trap functions. */
96 
97 #include <mach/mach_traps.h>
98 #include <mach/mach_syscalls.h>
99 #include <kern/syscall_subr.h>
100 
101 #include <kern/clock.h>
102 #include <mach/mk_timer.h>
103 
104 
105 const mach_trap_t       mach_trap_table[MACH_TRAP_TABLE_COUNT] = {
106 /* 0 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
107 /* 1 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
108 /* 2 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
109 /* 3 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
110 /* 4 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
111 /* 5 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
112 /* 6 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
113 /* 7 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
114 /* 8 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
115 /* 9 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
116 /* 10 */ MACH_TRAP(_kernelrpc_mach_vm_allocate_trap, 4, 5, munge_wwlw),
117 /* 11 */ MACH_TRAP(_kernelrpc_mach_vm_purgable_control_trap, 4, 5, munge_wlww),
118 /* 12 */ MACH_TRAP(_kernelrpc_mach_vm_deallocate_trap, 3, 5, munge_wll),
119 /* 13 */ MACH_TRAP(task_dyld_process_info_notify_get_trap, 2, 4, munge_ll),
120 /* 14 */ MACH_TRAP(_kernelrpc_mach_vm_protect_trap, 5, 7, munge_wllww),
121 /* 15 */ MACH_TRAP(_kernelrpc_mach_vm_map_trap, 6, 8, munge_wwllww),
122 /* 16 */ MACH_TRAP(_kernelrpc_mach_port_allocate_trap, 3, 3, munge_www),
123 /* 17 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
124 /* 18 */ MACH_TRAP(_kernelrpc_mach_port_deallocate_trap, 2, 2, munge_ww),
125 /* 19 */ MACH_TRAP(_kernelrpc_mach_port_mod_refs_trap, 4, 4, munge_wwww),
126 /* 20 */ MACH_TRAP(_kernelrpc_mach_port_move_member_trap, 3, 3, munge_www),
127 /* 21 */ MACH_TRAP(_kernelrpc_mach_port_insert_right_trap, 4, 4, munge_wwww),
128 /* 22 */ MACH_TRAP(_kernelrpc_mach_port_insert_member_trap, 3, 3, munge_www),
129 /* 23 */ MACH_TRAP(_kernelrpc_mach_port_extract_member_trap, 3, 3, munge_www),
130 /* 24 */ MACH_TRAP(_kernelrpc_mach_port_construct_trap, 4, 5, munge_wwlw),
131 /* 25 */ MACH_TRAP(_kernelrpc_mach_port_destruct_trap, 4, 5, munge_wwwl),
132 /* 26 */ MACH_TRAP(mach_reply_port, 0, 0, NULL, .mach_trap_returns_port = 1),
133 /* 27 */ MACH_TRAP(thread_self_trap, 0, 0, NULL, .mach_trap_returns_port = 1),
134 /* 28 */ MACH_TRAP(task_self_trap, 0, 0, NULL, .mach_trap_returns_port = 1),
135 /* 29 */ MACH_TRAP(host_self_trap, 0, 0, NULL, .mach_trap_returns_port = 1),
136 /* 30 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
137 /* 31 */ MACH_TRAP(mach_msg_trap, 7, 7, munge_wwwwwww),
138 /* 32 */ MACH_TRAP(mach_msg_overwrite_trap, 8, 8, munge_wwwwwwww),
139 /* 33 */ MACH_TRAP(semaphore_signal_trap, 1, 1, munge_w),
140 /* 34 */ MACH_TRAP(semaphore_signal_all_trap, 1, 1, munge_w),
141 /* 35 */ MACH_TRAP(semaphore_signal_thread_trap, 2, 2, munge_ww),
142 /* 36 */ MACH_TRAP(semaphore_wait_trap, 1, 1, munge_w),
143 /* 37 */ MACH_TRAP(semaphore_wait_signal_trap, 2, 2, munge_ww),
144 /* 38 */ MACH_TRAP(semaphore_timedwait_trap, 3, 3, munge_www),
145 /* 39 */ MACH_TRAP(semaphore_timedwait_signal_trap, 4, 4, munge_wwww),
146 /* 40 */ MACH_TRAP(_kernelrpc_mach_port_get_attributes_trap, 5, 5, munge_wwwww),
147 /* 41 */ MACH_TRAP(_kernelrpc_mach_port_guard_trap, 4, 5, munge_wwlw),
148 /* 42 */ MACH_TRAP(_kernelrpc_mach_port_unguard_trap, 3, 4, munge_wwl),
149 /* 43 */ MACH_TRAP(mach_generate_activity_id, 3, 3, munge_www),
150 /* 44 */ MACH_TRAP(task_name_for_pid, 3, 3, munge_www),
151 /* 45 */ MACH_TRAP(task_for_pid, 3, 3, munge_www),
152 /* 46 */ MACH_TRAP(pid_for_task, 2, 2, munge_ww),
153 #if defined(__LP64__) || defined(__arm64__)
154 /* 47 */ MACH_TRAP(mach_msg2_trap, 8, 16, munge_llllllll),
155 #else
156 /* 47 */ MACH_TRAP(kern_invalid, 0, 0, NULL), /* Do not take */
157 #endif
158 /* 48 */ MACH_TRAP(macx_swapon, 4, 5, munge_lwww),
159 /* 49 */ MACH_TRAP(macx_swapoff, 2, 3, munge_lw),
160 /* 50 */ MACH_TRAP(thread_get_special_reply_port, 0, 0, NULL, .mach_trap_returns_port = 1),
161 /* 51 */ MACH_TRAP(macx_triggers, 4, 4, munge_wwww),
162 /* 52 */ MACH_TRAP(macx_backing_store_suspend, 1, 1, munge_w),
163 /* 53 */ MACH_TRAP(macx_backing_store_recovery, 1, 1, munge_w),
164 /* 54 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
165 /* 55 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
166 /* 56 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
167 /* 57 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
168 /* 58 */ MACH_TRAP(pfz_exit, 0, 0, NULL),
169 /* 59 */ MACH_TRAP(swtch_pri, 0, 0, NULL),
170 /* 60 */ MACH_TRAP(swtch, 0, 0, NULL),
171 /* 61 */ MACH_TRAP(thread_switch, 3, 3, munge_www),
172 /* 62 */ MACH_TRAP(clock_sleep_trap, 5, 5, munge_wwwww),
173 /* 63 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
174 /* 64 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
175 /* 65 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
176 /* 66 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
177 /* 67 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
178 /* 68 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
179 /* 69 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
180 /* 70 */ MACH_TRAP(host_create_mach_voucher_trap, 4, 4, munge_wwww),
181 /* 71 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
182 /* 72 */ MACH_TRAP(mach_voucher_extract_attr_recipe_trap, 4, 4, munge_wwww),
183 /* 73 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
184 /* 74 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
185 /* 75 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
186 /* 76 */ MACH_TRAP(_kernelrpc_mach_port_type_trap, 3, 3, munge_wwww),
187 /* 77 */ MACH_TRAP(_kernelrpc_mach_port_request_notification_trap, 7, 7, munge_wwwwwww),
188 /* 78 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
189 /* 79 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
190 /* 80 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
191 /* 81 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
192 /* 82 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
193 /* 83 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
194 /* 84 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
195 /* 85 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
196 /* 86 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
197 /* 87 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
198 /* 88 */ MACH_TRAP(_exclaves_ctl_trap, 8, 14, munge_wwllllll),
199 /* 89 */ MACH_TRAP(mach_timebase_info_trap, 1, 1, munge_w),
200 /* 90 */ MACH_TRAP(mach_wait_until_trap, 1, 2, munge_l),
201 /* 91 */ MACH_TRAP(mk_timer_create_trap, 0, 0, NULL, .mach_trap_returns_port = 1),
202 /* 92 */ MACH_TRAP(mk_timer_destroy_trap, 1, 1, munge_w),
203 /* 93 */ MACH_TRAP(mk_timer_arm_trap, 2, 3, munge_wl),
204 /* 94 */ MACH_TRAP(mk_timer_cancel_trap, 2, 2, munge_ww),
205 /* 95 */ MACH_TRAP(mk_timer_arm_leeway_trap, 4, 6, munge_wlll),
206 /* 96 */ MACH_TRAP(debug_control_port_for_pid, 3, 3, munge_www),
207 /* 97 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
208 /* 98 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
209 /* 99 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
210 /* traps 100-107 reserved for IOKit */
211 /* 100 */ MACH_TRAP(iokit_user_client_trap, 8, 8, munge_wwwwwwww),
212 /* 101 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
213 /* 102 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
214 /* 103 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
215 /* 104 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
216 /* 105 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
217 /* 106 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
218 /* 107 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
219 /* 108 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
220 /* 109 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
221 /* 110 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
222 /* 111 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
223 /* 112 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
224 /* 113 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
225 /* 114 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
226 /* 115 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
227 /* 116 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
228 /* 117 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
229 /* 118 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
230 /* 119 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
231 /* 120 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
232 /* 121 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
233 /* 122 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
234 /* 123 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
235 /* 124 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
236 /* 125 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
237 /* 126 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
238 /* 127 */ MACH_TRAP(kern_invalid, 0, 0, NULL),
239 };
240 
241 const char * const mach_syscall_name_table[MACH_TRAP_TABLE_COUNT] = {
242 /* 0 */ "kern_invalid",
243 /* 1 */ "kern_invalid",
244 /* 2 */ "kern_invalid",
245 /* 3 */ "kern_invalid",
246 /* 4 */ "kern_invalid",
247 /* 5 */ "kern_invalid",
248 /* 6 */ "kern_invalid",
249 /* 7 */ "kern_invalid",
250 /* 8 */ "kern_invalid",
251 /* 9 */ "kern_invalid",
252 /* 10 */ "_kernelrpc_mach_vm_allocate_trap",
253 /* 11 */ "_kernelrpc_mach_vm_purgable_control_trap",
254 /* 12 */ "_kernelrpc_mach_vm_deallocate_trap",
255 /* 13 */ "task_dyld_process_info_notify_get_trap",
256 /* 14 */ "_kernelrpc_mach_vm_protect_trap",
257 /* 15 */ "_kernelrpc_mach_vm_map_trap",
258 /* 16 */ "_kernelrpc_mach_port_allocate_trap",
259 /* 17 */ "kern_invalid",
260 /* 18 */ "_kernelrpc_mach_port_deallocate_trap",
261 /* 19 */ "_kernelrpc_mach_port_mod_refs_trap",
262 /* 20 */ "_kernelrpc_mach_port_move_member_trap",
263 /* 21 */ "_kernelrpc_mach_port_insert_right_trap",
264 /* 22 */ "_kernelrpc_mach_port_insert_member_trap",
265 /* 23 */ "_kernelrpc_mach_port_extract_member_trap",
266 /* 24 */ "_kernelrpc_mach_port_construct_trap",
267 /* 25 */ "_kernelrpc_mach_port_destruct_trap",
268 /* 26 */ "mach_reply_port",
269 /* 27 */ "thread_self_trap",
270 /* 28 */ "task_self_trap",
271 /* 29 */ "host_self_trap",
272 /* 30 */ "kern_invalid",
273 /* 31 */ "mach_msg_trap",
274 /* 32 */ "mach_msg_overwrite_trap",
275 /* 33 */ "semaphore_signal_trap",
276 /* 34 */ "semaphore_signal_all_trap",
277 /* 35 */ "semaphore_signal_thread_trap",
278 /* 36 */ "semaphore_wait_trap",
279 /* 37 */ "semaphore_wait_signal_trap",
280 /* 38 */ "semaphore_timedwait_trap",
281 /* 39 */ "semaphore_timedwait_signal_trap",
282 /* 40 */ "_kernelrpc_mach_port_get_attributes_trap",
283 /* 41 */ "_kernelrpc_mach_port_guard_trap",
284 /* 42 */ "_kernelrpc_mach_port_unguard_trap",
285 /* 43 */ "mach_generate_activity_id",
286 /* 44 */ "task_name_for_pid",
287 /* 45 */ "task_for_pid",
288 /* 46 */ "pid_for_task",
289 #if defined(__LP64__) || defined(__arm64__)
290 /* 47 */ "mach_msg2_trap",
291 #else
292 /* 47 */ "kern_invalid",
293 #endif
294 /* 48 */ "macx_swapon",
295 /* 49 */ "macx_swapoff",
296 /* 50 */ "thread_get_special_reply_port",
297 /* 51 */ "macx_triggers",
298 /* 52 */ "macx_backing_store_suspend",
299 /* 53 */ "macx_backing_store_recovery",
300 /* 54 */ "kern_invalid",
301 /* 55 */ "kern_invalid",
302 /* 56 */ "kern_invalid",
303 /* 57 */ "kern_invalid",
304 /* 58 */ "pfz_exit",
305 /* 59 */ "swtch_pri",
306 /* 60 */ "swtch",
307 /* 61 */ "thread_switch",
308 /* 62 */ "clock_sleep_trap",
309 /* 63 */ "kern_invalid",
310 /* traps 64 - 95 reserved (debo) */
311 /* 64 */ "kern_invalid",
312 /* 65 */ "kern_invalid",
313 /* 66 */ "kern_invalid",
314 /* 67 */ "kern_invalid",
315 /* 68 */ "kern_invalid",
316 /* 69 */ "kern_invalid",
317 /* 70 */ "host_create_mach_voucher_trap",
318 /* 71 */ "kern_invalid",
319 /* 72 */ "mach_voucher_extract_attr_recipe_trap",
320 /* 73 */ "kern_invalid",
321 /* 74 */ "kern_invalid",
322 /* 75 */ "kern_invalid",
323 /* 76 */ "_kernelrpc_mach_port_type_trap",
324 /* 77 */ "_kernelrpc_mach_port_request_notification_trap",
325 /* 78 */ "kern_invalid",
326 /* 79 */ "kern_invalid",
327 /* 80 */ "kern_invalid",
328 /* 81 */ "kern_invalid",
329 /* 82 */ "kern_invalid",
330 /* 83 */ "kern_invalid",
331 /* 84 */ "kern_invalid",
332 /* 85 */ "kern_invalid",
333 /* 86 */ "kern_invalid",
334 /* 87 */ "kern_invalid",
335 /* 88 */ "_exclaves_ctl_trap",
336 /* 89 */ "mach_timebase_info_trap",
337 /* 90 */ "mach_wait_until_trap",
338 /* 91 */ "mk_timer_create_trap",
339 /* 92 */ "mk_timer_destroy_trap",
340 /* 93 */ "mk_timer_arm_trap",
341 /* 94 */ "mk_timer_cancel_trap",
342 /* 95 */ "mk_timer_arm_leeway_trap",
343 /* traps 64 - 95 reserved (debo) */
344 /* 96 */ "debug_control_port_for_pid",
345 /* 97 */ "kern_invalid",
346 /* 98 */ "kern_invalid",
347 /* 99 */ "kern_invalid",
348 /* traps 100-107 reserved for iokit (esb) */
349 /* 100 */ "iokit_user_client_trap",
350 /* 101 */ "kern_invalid",
351 /* 102 */ "kern_invalid",
352 /* 103 */ "kern_invalid",
353 /* 104 */ "kern_invalid",
354 /* 105 */ "kern_invalid",
355 /* 106 */ "kern_invalid",
356 /* 107 */ "kern_invalid",
357 /* traps 108-127 unused */
358 /* 108 */ "kern_invalid",
359 /* 109 */ "kern_invalid",
360 /* 110 */ "kern_invalid",
361 /* 111 */ "kern_invalid",
362 /* 112 */ "kern_invalid",
363 /* 113 */ "kern_invalid",
364 /* 114 */ "kern_invalid",
365 /* 115 */ "kern_invalid",
366 /* 116 */ "kern_invalid",
367 /* 117 */ "kern_invalid",
368 /* 118 */ "kern_invalid",
369 /* 119 */ "kern_invalid",
370 /* 120 */ "kern_invalid",
371 /* 121 */ "kern_invalid",
372 /* 122 */ "kern_invalid",
373 /* 123 */ "kern_invalid",
374 /* 124 */ "kern_invalid",
375 /* 125 */ "kern_invalid",
376 /* 126 */ "kern_invalid",
377 /* 127 */ "kern_invalid",
378 };
379 
380 const int mach_trap_count = (sizeof(mach_trap_table) / sizeof(mach_trap_table[0]));
381 
382 kern_return_t
kern_invalid(__unused struct kern_invalid_args * args)383 kern_invalid(
384 	__unused struct kern_invalid_args *args)
385 {
386 	if (kern_invalid_debug) {
387 		Debugger("kern_invalid mach trap");
388 	}
389 	return KERN_INVALID_ARGUMENT;
390 }
391