xref: /xnu-12377.1.9/bsd/sys/fbt.h (revision f6217f891ac0bb64f3d375211650a4c1ff8ca1ea)
1*f6217f89SApple OSS Distributions /*
2*f6217f89SApple OSS Distributions  * Copyright (c) 2005-2006 Apple Computer, Inc. All rights reserved.
3*f6217f89SApple OSS Distributions  *
4*f6217f89SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*f6217f89SApple OSS Distributions  *
6*f6217f89SApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*f6217f89SApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*f6217f89SApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*f6217f89SApple OSS Distributions  * compliance with the License. The rights granted to you under the License
10*f6217f89SApple OSS Distributions  * may not be used to create, or enable the creation or redistribution of,
11*f6217f89SApple OSS Distributions  * unlawful or unlicensed copies of an Apple operating system, or to
12*f6217f89SApple OSS Distributions  * circumvent, violate, or enable the circumvention or violation of, any
13*f6217f89SApple OSS Distributions  * terms of an Apple operating system software license agreement.
14*f6217f89SApple OSS Distributions  *
15*f6217f89SApple OSS Distributions  * Please obtain a copy of the License at
16*f6217f89SApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*f6217f89SApple OSS Distributions  *
18*f6217f89SApple OSS Distributions  * The Original Code and all software distributed under the License are
19*f6217f89SApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*f6217f89SApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*f6217f89SApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*f6217f89SApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*f6217f89SApple OSS Distributions  * Please see the License for the specific language governing rights and
24*f6217f89SApple OSS Distributions  * limitations under the License.
25*f6217f89SApple OSS Distributions  *
26*f6217f89SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*f6217f89SApple OSS Distributions  */
28*f6217f89SApple OSS Distributions 
29*f6217f89SApple OSS Distributions #ifndef _FBT_H
30*f6217f89SApple OSS Distributions #define _FBT_H
31*f6217f89SApple OSS Distributions 
32*f6217f89SApple OSS Distributions #if defined (__x86_64__)
33*f6217f89SApple OSS Distributions typedef uint8_t machine_inst_t;
34*f6217f89SApple OSS Distributions #elif defined(__arm__)
35*f6217f89SApple OSS Distributions typedef uint16_t machine_inst_t;
36*f6217f89SApple OSS Distributions #elif defined(__arm64__)
37*f6217f89SApple OSS Distributions typedef uint32_t machine_inst_t;
38*f6217f89SApple OSS Distributions #else
39*f6217f89SApple OSS Distributions #error Unknown Architecture
40*f6217f89SApple OSS Distributions #endif
41*f6217f89SApple OSS Distributions 
42*f6217f89SApple OSS Distributions #define MAX_FBTP_NAME_CHARS 16
43*f6217f89SApple OSS Distributions 
44*f6217f89SApple OSS Distributions typedef struct fbt_probe {
45*f6217f89SApple OSS Distributions 	struct fbt_probe *fbtp_hashnext;
46*f6217f89SApple OSS Distributions 	machine_inst_t	*fbtp_patchpoint;
47*f6217f89SApple OSS Distributions 	int8_t			fbtp_rval;
48*f6217f89SApple OSS Distributions 	machine_inst_t	fbtp_patchval;
49*f6217f89SApple OSS Distributions 	machine_inst_t	fbtp_savedval;
50*f6217f89SApple OSS Distributions         machine_inst_t  fbtp_currentval;
51*f6217f89SApple OSS Distributions 	uintptr_t		fbtp_roffset;
52*f6217f89SApple OSS Distributions 	dtrace_id_t		fbtp_id;
53*f6217f89SApple OSS Distributions 	/* FIXME!
54*f6217f89SApple OSS Distributions 	 * This field appears to only be used in error messages.
55*f6217f89SApple OSS Distributions 	 * It puts this structure into the next size bucket in kmem_alloc
56*f6217f89SApple OSS Distributions 	 * wasting 32 bytes per probe. (in i386 only)
57*f6217f89SApple OSS Distributions 	 */
58*f6217f89SApple OSS Distributions 	char			fbtp_name[MAX_FBTP_NAME_CHARS];
59*f6217f89SApple OSS Distributions 	struct modctl	*fbtp_ctl;
60*f6217f89SApple OSS Distributions 	int		fbtp_loadcnt;
61*f6217f89SApple OSS Distributions 	struct fbt_probe *fbtp_next;
62*f6217f89SApple OSS Distributions } fbt_probe_t;
63*f6217f89SApple OSS Distributions 
64*f6217f89SApple OSS Distributions extern int dtrace_invop(uintptr_t, uintptr_t *, uintptr_t);
65*f6217f89SApple OSS Distributions extern int fbt_invop(uintptr_t, uintptr_t *, uintptr_t);
66*f6217f89SApple OSS Distributions extern void fbt_provide_module(void *, struct modctl *);
67*f6217f89SApple OSS Distributions extern int fbt_enable (void *arg, dtrace_id_t id, void *parg);
68*f6217f89SApple OSS Distributions 
69*f6217f89SApple OSS Distributions extern bool fbt_module_excluded(struct modctl*);
70*f6217f89SApple OSS Distributions extern bool fbt_excluded(const char *);
71*f6217f89SApple OSS Distributions 
72*f6217f89SApple OSS Distributions extern void fbt_blacklist_init(void);
73*f6217f89SApple OSS Distributions extern void fbt_provide_probe(struct modctl *ctl, const char *modname, const char *name, machine_inst_t *instr, machine_inst_t *limit);
74*f6217f89SApple OSS Distributions #endif /* _FBT_H */
75