1 /* $NetBSD: intr.h,v 1.1 2007/12/29 14:38:33 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 Jared D. McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Jared D. McNeill. 18 * 4. Neither the name of The NetBSD Foundation nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #ifndef _ARCH_USERMODE_INCLUDE_INTR_H 36 #define _ARCH_USERMODE_INCLUDE_INTR_H 37 38 #include <machine/intrdefs.h> 39 40 __inline static int 41 splraise(int x) 42 { 43 extern int usermode_x; 44 int oldx = usermode_x; 45 46 usermode_x = x; 47 48 return oldx; 49 } 50 51 __inline static void 52 spllower(int x) 53 { 54 extern int usermode_x; 55 56 usermode_x = x; 57 } 58 59 #define spl0() spllower(IPL_NONE) 60 #define splx(x) spllower(x) 61 62 typedef uint8_t ipl_t; 63 typedef struct { 64 ipl_t _ipl; 65 } ipl_cookie_t; 66 67 static inline ipl_cookie_t 68 makeiplcookie(ipl_t ipl) 69 { 70 return (ipl_cookie_t){._ipl = ipl}; 71 } 72 73 static inline int 74 splraiseipl(ipl_cookie_t icookie) 75 { 76 return splraise(icookie._ipl); 77 } 78 79 #include <sys/spl.h> 80 81 #endif /* !_ARCH_USERMODE_INCLUDE_INTR_H */ 82