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 * Copyright 2018 Joyent, Inc.
27 */
28
29 #ifndef _ASM_HTABLE_H
30 #define _ASM_HTABLE_H
31
32 #include <sys/ccompile.h>
33 #include <sys/types.h>
34
35 #ifdef __cplusplus
36 extern "C" {
37 #endif
38
39 #if !defined(__lint) && defined(__GNUC__)
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
atomic_orb(uint8_t * addr,uint8_t value)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
atomic_andb(uint8_t * addr,uint8_t value)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
atomic_inc16(uint16_t * addr)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
atomic_dec16(uint16_t * addr)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 #endif /* !__lint && __GNUC__ */
87
88 #ifdef __cplusplus
89 }
90 #endif
91
92 #endif /* _ASM_HTABLE_H */
93