1/*
2 * Copyright (c) 2005-2006 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29#ifndef _FBT_H
30#define _FBT_H
31
32#if defined (__x86_64__)
33typedef uint8_t machine_inst_t;
34#else
35#error Unknown Architecture
36#endif
37
38#define MAX_FBTP_NAME_CHARS 16
39
40typedef struct fbt_probe {
41	struct fbt_probe *fbtp_hashnext;
42	machine_inst_t	*fbtp_patchpoint;
43	int8_t			fbtp_rval;
44	machine_inst_t	fbtp_patchval;
45	machine_inst_t	fbtp_savedval;
46        machine_inst_t  fbtp_currentval;
47	uintptr_t		fbtp_roffset;
48	dtrace_id_t		fbtp_id;
49	/* FIXME!
50	 * This field appears to only be used in error messages.
51	 * It puts this structure into the next size bucket in kmem_alloc
52	 * wasting 32 bytes per probe. (in i386 only)
53	 */
54	char			fbtp_name[MAX_FBTP_NAME_CHARS];
55	struct modctl	*fbtp_ctl;
56	int		fbtp_loadcnt;
57	struct fbt_probe *fbtp_next;
58} fbt_probe_t;
59
60extern int dtrace_invop(uintptr_t, uintptr_t *, uintptr_t);
61extern int fbt_invop(uintptr_t, uintptr_t *, uintptr_t);
62extern void fbt_provide_module(void *, struct modctl *);
63extern int fbt_enable (void *arg, dtrace_id_t id, void *parg);
64#endif /* _FBT_H */
65