1 /* $NetBSD: rumpuser_component.c,v 1.6 2013/05/07 15:18:35 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 2013 Antti Kantee. All Rights Reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include "rumpuser_port.h" 29 30 #if !defined(lint) 31 __RCSID("$NetBSD: rumpuser_component.c,v 1.6 2013/05/07 15:18:35 pooka Exp $"); 32 #endif /* !lint */ 33 34 #include <stdint.h> 35 36 /* 37 * These interfaces affect the shlib major/minor; they can be called from 38 * any program when applicable. The rest of the interfaces provided 39 * by rumpuser are part of the rump kernel/hypervisor contract and 40 * are versioned by RUMPUSER_VERSION. 41 */ 42 43 #include <rump/rumpuser_component.h> 44 45 #include "rumpuser_int.h" 46 47 void * 48 rumpuser_component_unschedule(void) 49 { 50 int nlocks; 51 52 rumpkern_unsched(&nlocks, NULL); 53 return (void *)(intptr_t)nlocks; 54 } 55 56 void 57 rumpuser_component_schedule(void *cookie) 58 { 59 int nlocks = (int)(intptr_t)cookie; 60 61 rumpkern_sched(nlocks, NULL); 62 } 63 64 void 65 rumpuser_component_kthread(void) 66 { 67 68 rumpuser__hyp.hyp_schedule(); 69 rumpuser__hyp.hyp_lwproc_newlwp(0); 70 rumpuser__hyp.hyp_unschedule(); 71 } 72 73 struct lwp * 74 rumpuser_component_curlwp(void) 75 { 76 struct lwp *l; 77 78 rumpuser__hyp.hyp_schedule(); 79 l = rumpuser__hyp.hyp_lwproc_curlwp(); 80 rumpuser__hyp.hyp_unschedule(); 81 82 return l; 83 } 84 85 void 86 rumpuser_component_switchlwp(struct lwp *l) 87 { 88 89 rumpuser__hyp.hyp_schedule(); 90 rumpuser__hyp.hyp_lwproc_switch(l); 91 rumpuser__hyp.hyp_unschedule(); 92 } 93 94 void 95 rumpuser_component_kthread_release(void) 96 { 97 98 rumpuser__hyp.hyp_schedule(); 99 rumpuser__hyp.hyp_lwproc_release(); 100 rumpuser__hyp.hyp_unschedule(); 101 } 102 103 int 104 rumpuser_component_errtrans(int hosterr) 105 { 106 107 return rumpuser__errtrans(hosterr); 108 } 109