1 /* $NetBSD: intr.h,v 1.7 2012/01/21 22:09:57 reinoud 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _ARCH_USERMODE_INCLUDE_INTR_H 30 #define _ARCH_USERMODE_INCLUDE_INTR_H 31 32 #include <machine/intrdefs.h> 33 #include <sys/siginfo.h> 34 35 /* spl */ 36 void splinit(void); 37 int splraise(int); 38 void spllower(int); 39 void spl_intr(int x, void (*func)(void *), void *arg); 40 41 #define spl0() spllower(IPL_NONE) 42 #define splx(x) spllower(x) 43 44 /* traps */ 45 typedef void (sigfunc_t)(vaddr_t from_userland, vaddr_t pc, vaddr_t va); 46 extern void setup_signal_handlers(void); 47 extern void signal_intr_establish(int sig, sigfunc_t f); 48 extern void *sigio_intr_establish(int (*)(void *), void *); 49 50 /* spl implementation */ 51 typedef uint8_t ipl_t; 52 typedef struct { 53 ipl_t _ipl; 54 } ipl_cookie_t; 55 56 static inline ipl_cookie_t 57 makeiplcookie(ipl_t ipl) 58 { 59 return (ipl_cookie_t){._ipl = ipl}; 60 } 61 62 static inline int 63 splraiseipl(ipl_cookie_t icookie) 64 { 65 return splraise(icookie._ipl); 66 } 67 68 #include <sys/spl.h> 69 70 /* for trap.c */ 71 72 #endif /* !_ARCH_USERMODE_INCLUDE_INTR_H */ 73