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 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 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 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