xref: /illumos-gate/usr/src/uts/intel/asm/htable.h (revision 3ce33fb052b375020ea4249290d33b834d9f9e75)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef _ASM_HTABLE_H
28 #define	_ASM_HTABLE_H
29 
30 #include <sys/ccompile.h>
31 #include <sys/types.h>
32 
33 #ifdef	__cplusplus
34 extern "C" {
35 #endif
36 
37 #if !defined(__lint) && defined(__GNUC__)
38 
39 #if defined(__i386) || defined(__amd64)
40 
41 /*
42  * This set of atomic operations are designed primarily
43  * for some ia32 hat layer operations.
44  */
45 
46 extern __GNU_INLINE void
47 atomic_orb(uint8_t *addr, uint8_t value)
48 {
49 	__asm__ __volatile__(
50 	    "lock; orb %%dl,%0"
51 	    : "=m" (*addr)
52 	    : "d" (value), "m" (*addr)
53 	    : "cc");
54 }
55 
56 extern __GNU_INLINE void
57 atomic_andb(uint8_t *addr, uint8_t value)
58 {
59 	__asm__ __volatile__(
60 	    "lock; andb %%dl,%0"
61 	    : "=m" (*addr)
62 	    : "d" (value), "m" (*addr)
63 	    : "cc");
64 }
65 
66 extern __GNU_INLINE void
67 atomic_inc16(uint16_t *addr)
68 {
69 	__asm__ __volatile__(
70 	    "lock; incw %0"
71 	    : "=m" (*addr)
72 	    : "m" (*addr)
73 	    : "cc");
74 }
75 
76 extern __GNU_INLINE void
77 atomic_dec16(uint16_t *addr)
78 {
79 	__asm__ __volatile__(
80 	    "lock; decw %0"
81 	    : "=m" (*addr)
82 	    : "m" (*addr)
83 	    : "cc");
84 }
85 
86 extern __GNU_INLINE void
87 mmu_tlbflush_entry(caddr_t addr)
88 {
89 	__asm__ __volatile__(
90 	    "invlpg %0"
91 	    : "=m" (*addr)
92 	    : "m" (*addr));
93 }
94 
95 #endif	/* __i386 || __amd64 */
96 
97 #endif	/* !__lint && __GNUC__ */
98 
99 #ifdef	__cplusplus
100 }
101 #endif
102 
103 #endif	/* _ASM_HTABLE_H */
104