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 "opt_kdtrace.h"
29
30#include <sys/cdefs.h>
31#include <sys/types.h>
32#include <sys/param.h>
33#include <sys/systm.h>
34
35#include <sys/conf.h>
36#include <sys/kernel.h>
37#include <sys/module.h>
38#include <sys/sdt.h>
39#include <sys/sysctl.h>
40#include <sys/vnode.h>
41
42SDT_PROVIDER_DEFINE(test);
43
44SDT_PROBE_DEFINE7(test, , , sdttest, sdttest, "int", "int", "int", "int", "int",
45    "int", "int");
46
47/*
48 * These are variables that the DTrace test suite references in the
49 * Solaris kernel. We define them here so that the tests function
50 * unaltered.
51 */
52int	kmem_flags;
53
54typedef struct vnode vnode_t;
55vnode_t dummy;
56vnode_t *rootvp = &dummy;
57
58/*
59 * Test SDT probes with more than 5 arguments. On amd64, such probes require
60 * special handling since only the first 5 arguments will be passed to
61 * dtrace_probe() in registers; the rest must be fetched off the stack.
62 */
63static int
64dtrace_test_sdttest(SYSCTL_HANDLER_ARGS)
65{
66	int val, error;
67
68	val = 0;
69	error = sysctl_handle_int(oidp, &val, 0, req);
70	if (error || req->newptr == NULL)
71		return (error);
72	else if (val == 0)
73		return (0);
74
75	SDT_PROBE7(test, , , sdttest, 1, 2, 3, 4, 5, 6, 7);
76
77	return (error);
78}
79
80static SYSCTL_NODE(_debug, OID_AUTO, dtracetest, CTLFLAG_RD, 0, "");
81
82SYSCTL_PROC(_debug_dtracetest, OID_AUTO, sdttest, CTLTYPE_INT | CTLFLAG_RW,
83    NULL, 0, dtrace_test_sdttest, "I", "Trigger the SDT test probe");
84
85static int
86dtrace_test_modevent(module_t mod, int type, void *data)
87{
88	int error = 0;
89
90	switch (type) {
91	case MOD_LOAD:
92		break;
93
94	case MOD_UNLOAD:
95		break;
96
97	case MOD_SHUTDOWN:
98		break;
99
100	default:
101		error = EOPNOTSUPP;
102		break;
103
104	}
105	return (error);
106}
107
108DEV_MODULE(dtrace_test, dtrace_test_modevent, NULL);
109MODULE_VERSION(dtrace_test, 1);
110MODULE_DEPEND(dtrace_test, dtraceall, 1, 1, 1);
111