1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #ifndef _ASM_BITMAP_H
28*0Sstevel@tonic-gate #define _ASM_BITMAP_H
29*0Sstevel@tonic-gate
30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
31*0Sstevel@tonic-gate
32*0Sstevel@tonic-gate #include <sys/types.h>
33*0Sstevel@tonic-gate
34*0Sstevel@tonic-gate #ifdef __cplusplus
35*0Sstevel@tonic-gate extern "C" {
36*0Sstevel@tonic-gate #endif
37*0Sstevel@tonic-gate
38*0Sstevel@tonic-gate #if !defined(__lint) && defined(__GNUC__)
39*0Sstevel@tonic-gate
40*0Sstevel@tonic-gate extern __inline__ int
highbit(ulong_t i)41*0Sstevel@tonic-gate highbit(ulong_t i)
42*0Sstevel@tonic-gate {
43*0Sstevel@tonic-gate long __value = -1l;
44*0Sstevel@tonic-gate
45*0Sstevel@tonic-gate #if defined(__amd64)
46*0Sstevel@tonic-gate __asm__(
47*0Sstevel@tonic-gate "bsrq %1,%0"
48*0Sstevel@tonic-gate : "+r" (__value)
49*0Sstevel@tonic-gate : "r" (i)
50*0Sstevel@tonic-gate : "cc");
51*0Sstevel@tonic-gate #elif defined(__i386)
52*0Sstevel@tonic-gate __asm__(
53*0Sstevel@tonic-gate "bsrl %1,%0"
54*0Sstevel@tonic-gate : "+r" (__value)
55*0Sstevel@tonic-gate : "r" (i)
56*0Sstevel@tonic-gate : "cc");
57*0Sstevel@tonic-gate #else
58*0Sstevel@tonic-gate #error "port me"
59*0Sstevel@tonic-gate #endif
60*0Sstevel@tonic-gate return ((int)(__value + 1));
61*0Sstevel@tonic-gate }
62*0Sstevel@tonic-gate
63*0Sstevel@tonic-gate extern __inline__ int
lowbit(ulong_t i)64*0Sstevel@tonic-gate lowbit(ulong_t i)
65*0Sstevel@tonic-gate {
66*0Sstevel@tonic-gate long __value = -1l;
67*0Sstevel@tonic-gate
68*0Sstevel@tonic-gate #if defined(__amd64)
69*0Sstevel@tonic-gate __asm__(
70*0Sstevel@tonic-gate "bsfq %1,%0"
71*0Sstevel@tonic-gate : "+r" (__value)
72*0Sstevel@tonic-gate : "r" (i)
73*0Sstevel@tonic-gate : "cc");
74*0Sstevel@tonic-gate #elif defined(__i386)
75*0Sstevel@tonic-gate __asm__(
76*0Sstevel@tonic-gate "bsfl %1,%0"
77*0Sstevel@tonic-gate : "+r" (__value)
78*0Sstevel@tonic-gate : "r" (i)
79*0Sstevel@tonic-gate : "cc");
80*0Sstevel@tonic-gate #else
81*0Sstevel@tonic-gate #error "port me"
82*0Sstevel@tonic-gate #endif
83*0Sstevel@tonic-gate return ((int)(__value + 1));
84*0Sstevel@tonic-gate }
85*0Sstevel@tonic-gate
86*0Sstevel@tonic-gate extern __inline__ uint_t
atomic_btr32(uint32_t * memory,uint_t bitnum)87*0Sstevel@tonic-gate atomic_btr32(uint32_t *memory, uint_t bitnum)
88*0Sstevel@tonic-gate {
89*0Sstevel@tonic-gate uint8_t __value;
90*0Sstevel@tonic-gate
91*0Sstevel@tonic-gate #if defined(__amd64)
92*0Sstevel@tonic-gate __asm__ __volatile__(
93*0Sstevel@tonic-gate "lock;"
94*0Sstevel@tonic-gate "btrl %2, (%0);"
95*0Sstevel@tonic-gate "setc %1"
96*0Sstevel@tonic-gate : "+r" (memory), "+r" (__value)
97*0Sstevel@tonic-gate : "ir" (bitnum)
98*0Sstevel@tonic-gate : "cc");
99*0Sstevel@tonic-gate #elif defined(__i386)
100*0Sstevel@tonic-gate __asm__ __volatile__(
101*0Sstevel@tonic-gate "lock;"
102*0Sstevel@tonic-gate "btrl %2, (%0);"
103*0Sstevel@tonic-gate "setc %1"
104*0Sstevel@tonic-gate : "+r" (memory), "=r" (__value)
105*0Sstevel@tonic-gate : "ir" (bitnum)
106*0Sstevel@tonic-gate : "cc");
107*0Sstevel@tonic-gate #else
108*0Sstevel@tonic-gate #error "port me"
109*0Sstevel@tonic-gate #endif
110*0Sstevel@tonic-gate return ((uint_t)__value);
111*0Sstevel@tonic-gate }
112*0Sstevel@tonic-gate
113*0Sstevel@tonic-gate #endif /* !__lint && __GNUC__ */
114*0Sstevel@tonic-gate
115*0Sstevel@tonic-gate #ifdef __cplusplus
116*0Sstevel@tonic-gate }
117*0Sstevel@tonic-gate #endif
118*0Sstevel@tonic-gate
119*0Sstevel@tonic-gate #endif /* _ASM_BITMAP_H */
120