Mercurial > illumos > illumos-gate
view usr/src/uts/intel/asm/bitmap.h @ 13634:44267816c977
2251 kernel inlines should support gcc 4
Reviewed by: Andrew Stormont <Andrew.Stormont@nexenta.com>
Reviewed by: Milan Jurik <milan.jurik@xylab.cz>
Reviewed by: Dan McDonald <danmcd@nexenta.com>
Reviewed by: Joshua M. Clulow <josh@sysmgr.org>
Reviewed by: Gordon Ross <gwr@nexenta.com>
Approved by: Garrett D'Amore <garrett@damore.org>
author | Richard Lowe <richlowe@richlowe.net> |
---|---|
date | Sun, 15 May 2011 21:34:10 +0100 |
parents | 68f95e015346 |
children |
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/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2005 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _ASM_BITMAP_H #define _ASM_BITMAP_H #include <sys/ccompile.h> #include <sys/types.h> #ifdef __cplusplus extern "C" { #endif #if !defined(__lint) && defined(__GNUC__) extern __GNU_INLINE int highbit(ulong_t i) { long __value = -1l; #if defined(__amd64) __asm__( "bsrq %1,%0" : "+r" (__value) : "r" (i) : "cc"); #elif defined(__i386) __asm__( "bsrl %1,%0" : "+r" (__value) : "r" (i) : "cc"); #else #error "port me" #endif return ((int)(__value + 1)); } extern __GNU_INLINE int lowbit(ulong_t i) { long __value = -1l; #if defined(__amd64) __asm__( "bsfq %1,%0" : "+r" (__value) : "r" (i) : "cc"); #elif defined(__i386) __asm__( "bsfl %1,%0" : "+r" (__value) : "r" (i) : "cc"); #else #error "port me" #endif return ((int)(__value + 1)); } extern __GNU_INLINE uint_t atomic_btr32(uint32_t *memory, uint_t bitnum) { uint8_t __value; #if defined(__amd64) __asm__ __volatile__( "lock;" "btrl %2, (%0);" "setc %1" : "+r" (memory), "+r" (__value) : "ir" (bitnum) : "cc"); #elif defined(__i386) __asm__ __volatile__( "lock;" "btrl %2, (%0);" "setc %1" : "+r" (memory), "=r" (__value) : "ir" (bitnum) : "cc"); #else #error "port me" #endif return ((uint_t)__value); } #endif /* !__lint && __GNUC__ */ #ifdef __cplusplus } #endif #endif /* _ASM_BITMAP_H */