xref: /xnu-8020.140.41/osfmk/kern/spl.c (revision 27b03b360a988dfd3dfdf34262bb0042026747cc)
1*27b03b36SApple OSS Distributions /*
2*27b03b36SApple OSS Distributions  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3*27b03b36SApple OSS Distributions  *
4*27b03b36SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*27b03b36SApple OSS Distributions  *
6*27b03b36SApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*27b03b36SApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*27b03b36SApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*27b03b36SApple OSS Distributions  * compliance with the License. The rights granted to you under the License
10*27b03b36SApple OSS Distributions  * may not be used to create, or enable the creation or redistribution of,
11*27b03b36SApple OSS Distributions  * unlawful or unlicensed copies of an Apple operating system, or to
12*27b03b36SApple OSS Distributions  * circumvent, violate, or enable the circumvention or violation of, any
13*27b03b36SApple OSS Distributions  * terms of an Apple operating system software license agreement.
14*27b03b36SApple OSS Distributions  *
15*27b03b36SApple OSS Distributions  * Please obtain a copy of the License at
16*27b03b36SApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*27b03b36SApple OSS Distributions  *
18*27b03b36SApple OSS Distributions  * The Original Code and all software distributed under the License are
19*27b03b36SApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*27b03b36SApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*27b03b36SApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*27b03b36SApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*27b03b36SApple OSS Distributions  * Please see the License for the specific language governing rights and
24*27b03b36SApple OSS Distributions  * limitations under the License.
25*27b03b36SApple OSS Distributions  *
26*27b03b36SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*27b03b36SApple OSS Distributions  */
28*27b03b36SApple OSS Distributions #include <kern/thread.h>
29*27b03b36SApple OSS Distributions #include <kern/spl.h>
30*27b03b36SApple OSS Distributions #include <machine/machine_routines.h>
31*27b03b36SApple OSS Distributions 
32*27b03b36SApple OSS Distributions /*
33*27b03b36SApple OSS Distributions  *  spl routines
34*27b03b36SApple OSS Distributions  */
35*27b03b36SApple OSS Distributions 
36*27b03b36SApple OSS Distributions __private_extern__ spl_t
splhigh(void)37*27b03b36SApple OSS Distributions splhigh(
38*27b03b36SApple OSS Distributions 	void)
39*27b03b36SApple OSS Distributions {
40*27b03b36SApple OSS Distributions 	return ml_set_interrupts_enabled(FALSE);
41*27b03b36SApple OSS Distributions }
42*27b03b36SApple OSS Distributions 
43*27b03b36SApple OSS Distributions __private_extern__ spl_t
splsched(void)44*27b03b36SApple OSS Distributions splsched(
45*27b03b36SApple OSS Distributions 	void)
46*27b03b36SApple OSS Distributions {
47*27b03b36SApple OSS Distributions 	return ml_set_interrupts_enabled(FALSE);
48*27b03b36SApple OSS Distributions }
49*27b03b36SApple OSS Distributions 
50*27b03b36SApple OSS Distributions __private_extern__ spl_t
splclock(void)51*27b03b36SApple OSS Distributions splclock(
52*27b03b36SApple OSS Distributions 	void)
53*27b03b36SApple OSS Distributions {
54*27b03b36SApple OSS Distributions 	return ml_set_interrupts_enabled(FALSE);
55*27b03b36SApple OSS Distributions }
56*27b03b36SApple OSS Distributions 
57*27b03b36SApple OSS Distributions __private_extern__ void
spllo(void)58*27b03b36SApple OSS Distributions spllo(
59*27b03b36SApple OSS Distributions 	void)
60*27b03b36SApple OSS Distributions {
61*27b03b36SApple OSS Distributions 	(void)ml_set_interrupts_enabled(TRUE);
62*27b03b36SApple OSS Distributions }
63*27b03b36SApple OSS Distributions 
64*27b03b36SApple OSS Distributions __private_extern__ void
splx(spl_t l)65*27b03b36SApple OSS Distributions splx(
66*27b03b36SApple OSS Distributions 	spl_t l)
67*27b03b36SApple OSS Distributions {
68*27b03b36SApple OSS Distributions 	ml_set_interrupts_enabled((boolean_t) l);
69*27b03b36SApple OSS Distributions }
70