1 /* $NetBSD: syscall.c,v 1.9 2019/04/06 11:54:20 kamil Exp $ */
2
3 /*
4 * Copyright (c) 2006 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 *
8 * Author:
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32
33 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
34
35 __KERNEL_RCSID(0, "$NetBSD: syscall.c,v 1.9 2019/04/06 11:54:20 kamil Exp $");
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/proc.h>
40
41 #include <machine/frame.h>
42 #include <machine/userret.h>
43
44 void syscall_intern(struct proc *);
45 void syscall_plain(struct lwp *, u_int64_t, struct trapframe *);
46 void syscall_fancy(struct lwp *, u_int64_t, struct trapframe *);
47
48 void
syscall_intern(struct proc * p)49 syscall_intern(struct proc *p)
50 {
51
52 if (trace_is_enabled(p))
53 p->p_md.md_syscall = syscall_fancy;
54 else
55 p->p_md.md_syscall = syscall_plain;
56 }
57
58 /*
59 * Process a system call.
60 */
61 void
syscall_plain(struct lwp * l,u_int64_t code,struct trapframe * framep)62 syscall_plain(struct lwp *l, u_int64_t code, struct trapframe *framep)
63 {
64 panic("XXX %s: not implemented\n", __func__);
65 return;
66 }
67
68 void
syscall_fancy(struct lwp * l,u_int64_t code,struct trapframe * framep)69 syscall_fancy(struct lwp *l, u_int64_t code, struct trapframe *framep)
70 {
71 panic("XXX %s: not implemented\n", __func__);
72 return;
73 }
74
75 /*
76 * Process the tail end of a fork() for the child.
77 */
78 void
md_child_return(struct lwp * l)79 md_child_return(struct lwp *l)
80 {
81 panic("XXX %s: not implemented\n", __func__);
82 }
83
84 /*
85 * Process the tail end of a posix_spawn() for the child.
86 */
87 void
cpu_spawn_return(struct lwp * l)88 cpu_spawn_return(struct lwp *l)
89 {
90
91 userret(l);
92 }
93