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      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