1/*-
2 * Copyright 2008 John Birrell <jb@FreeBSD.org>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD$
26 *
27 */
28#include <sys/cdefs.h>
29#include <sys/types.h>
30#include <sys/param.h>
31#include <sys/systm.h>
32
33#include <sys/conf.h>
34#include <sys/kernel.h>
35#include <sys/module.h>
36#include <sys/sdt.h>
37#include <sys/sysctl.h>
38#include <sys/vnode.h>
39
40SDT_PROVIDER_DEFINE(test);
41
42SDT_PROBE_DEFINE7(test, , , sdttest, "int", "int", "int", "int", "int",
43    "int", "int");
44
45/*
46 * These are variables that the DTrace test suite references in the
47 * Solaris kernel. We define them here so that the tests function
48 * unaltered.
49 */
50int	kmem_flags;
51
52typedef struct vnode vnode_t;
53vnode_t dummy;
54vnode_t *rootvp = &dummy;
55
56/*
57 * Test SDT probes with more than 5 arguments. On amd64, such probes require
58 * special handling since only the first 5 arguments will be passed to
59 * dtrace_probe() in registers; the rest must be fetched off the stack.
60 */
61static int
62dtrace_test_sdttest(SYSCTL_HANDLER_ARGS)
63{
64	int val, error;
65
66	val = 0;
67	error = sysctl_handle_int(oidp, &val, 0, req);
68	if (error || req->newptr == NULL)
69		return (error);
70	else if (val == 0)
71		return (0);
72
73	SDT_PROBE7(test, , , sdttest, 1, 2, 3, 4, 5, 6, 7);
74
75	return (error);
76}
77
78static SYSCTL_NODE(_debug, OID_AUTO, dtracetest, CTLFLAG_RD, 0, "");
79
80SYSCTL_PROC(_debug_dtracetest, OID_AUTO, sdttest, CTLTYPE_INT | CTLFLAG_RW,
81    NULL, 0, dtrace_test_sdttest, "I", "Trigger the SDT test probe");
82
83static int
84dtrace_test_modevent(module_t mod, int type, void *data)
85{
86	int error = 0;
87
88	switch (type) {
89	case MOD_LOAD:
90		break;
91
92	case MOD_UNLOAD:
93		break;
94
95	case MOD_SHUTDOWN:
96		break;
97
98	default:
99		error = EOPNOTSUPP;
100		break;
101
102	}
103	return (error);
104}
105
106DEV_MODULE(dtrace_test, dtrace_test_modevent, NULL);
107MODULE_VERSION(dtrace_test, 1);
108MODULE_DEPEND(dtrace_test, dtraceall, 1, 1, 1);
109