userret.h revision 1.1 
1/*	$NetBSD: userret.h,v 1.1 2003/04/26 18:39:49 fvdl Exp $	*/
2
3/*
4 * XXXfvdl same as i386 counterpart, but should probably be independent.
5 */
6
7/*-
8 * Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
9 * All rights reserved.
10 *
11 * This code is derived from software contributed to The NetBSD Foundation
12 * by Charles M. Hannum.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 *    notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 *    notice, this list of conditions and the following disclaimer in the
21 *    documentation and/or other materials provided with the distribution.
22 * 3. All advertising materials mentioning features or use of this software
23 *    must display the following acknowledgement:
24 *        This product includes software developed by the NetBSD
25 *        Foundation, Inc. and its contributors.
26 * 4. Neither the name of The NetBSD Foundation nor the names of its
27 *    contributors may be used to endorse or promote products derived
28 *    from this software without specific prior written permission.
29 *
30 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
31 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
32 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
33 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
34 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
35 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
36 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
37 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
38 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
40 * POSSIBILITY OF SUCH DAMAGE.
41 */
42
43/*-
44 * Copyright (c) 1990 The Regents of the University of California.
45 * All rights reserved.
46 *
47 * This code is derived from software contributed to Berkeley by
48 * William Jolitz.
49 *
50 * Redistribution and use in source and binary forms, with or without
51 * modification, are permitted provided that the following conditions
52 * are met:
53 * 1. Redistributions of source code must retain the above copyright
54 *    notice, this list of conditions and the following disclaimer.
55 * 2. Redistributions in binary form must reproduce the above copyright
56 *    notice, this list of conditions and the following disclaimer in the
57 *    documentation and/or other materials provided with the distribution.
58 * 3. All advertising materials mentioning features or use of this software
59 *    must display the following acknowledgement:
60 *	This product includes software developed by the University of
61 *	California, Berkeley and its contributors.
62 * 4. Neither the name of the University nor the names of its contributors
63 *    may be used to endorse or promote products derived from this software
64 *    without specific prior written permission.
65 *
66 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
67 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
68 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
69 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
70 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
71 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
72 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
73 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
74 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
75 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
76 * SUCH DAMAGE.
77 *
78 */
79
80static __inline void userret __P((register struct lwp *));
81
82/*
83 * Define the code needed before returning to user mode, for
84 * trap and syscall.
85 */
86static __inline void
87userret(l)
88	register struct lwp *l;
89{
90	int sig;
91	struct proc *p = l->l_proc;
92
93	while ((sig = CURSIG(l)) != 0)
94		postsig(sig);
95
96	if (p->p_userret)
97		(p->p_userret)(l, p->p_userret_arg);
98
99	while (l->l_flag & L_SA_UPCALL)
100		sa_upcall_userret(l);
101
102	curcpu()->ci_schedstate.spc_curpriority = l->l_priority = l->l_usrpri;
103}
104