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 *
rumpuser_component_unschedule(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
rumpuser_component_schedule(void * cookie)57 rumpuser_component_schedule(void *cookie)
58 {
59 int nlocks = (int)(intptr_t)cookie;
60
61 rumpkern_sched(nlocks, NULL);
62 }
63
64 void
rumpuser_component_kthread(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 *
rumpuser_component_curlwp(void)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
rumpuser_component_switchlwp(struct lwp * l)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
rumpuser_component_kthread_release(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
rumpuser_component_errtrans(int hosterr)104 rumpuser_component_errtrans(int hosterr)
105 {
106
107 return rumpuser__errtrans(hosterr);
108 }
109