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__) |
33 | typedef uint8_t machine_inst_t; |
34 | #elif defined(__arm__) |
35 | typedef uint16_t machine_inst_t; |
36 | #elif defined(__arm64__) |
37 | typedef uint32_t machine_inst_t; |
38 | #else |
39 | #error Unknown Architecture |
40 | #endif |
41 | |
42 | #define MAX_FBTP_NAME_CHARS 16 |
43 | |
44 | typedef struct fbt_probe { |
45 | struct fbt_probe *fbtp_hashnext; |
46 | machine_inst_t *fbtp_patchpoint; |
47 | int8_t fbtp_rval; |
48 | machine_inst_t fbtp_patchval; |
49 | machine_inst_t fbtp_savedval; |
50 | machine_inst_t fbtp_currentval; |
51 | uintptr_t fbtp_roffset; |
52 | dtrace_id_t fbtp_id; |
53 | /* FIXME! |
54 | * This field appears to only be used in error messages. |
55 | * It puts this structure into the next size bucket in kmem_alloc |
56 | * wasting 32 bytes per probe. (in i386 only) |
57 | */ |
58 | char fbtp_name[MAX_FBTP_NAME_CHARS]; |
59 | struct modctl *fbtp_ctl; |
60 | int fbtp_loadcnt; |
61 | struct fbt_probe *fbtp_next; |
62 | } fbt_probe_t; |
63 | |
64 | extern int dtrace_invop(uintptr_t, uintptr_t *, uintptr_t); |
65 | extern int fbt_invop(uintptr_t, uintptr_t *, uintptr_t); |
66 | extern void fbt_provide_module(void *, struct modctl *); |
67 | extern int fbt_enable (void *arg, dtrace_id_t id, void *parg); |
68 | |
69 | extern bool fbt_module_excluded(struct modctl*); |
70 | extern bool fbt_excluded(const char *); |
71 | |
72 | extern void fbt_blacklist_init(void); |
73 | extern void fbt_provide_probe(struct modctl *ctl, const char *modname, const char *name, machine_inst_t *instr, machine_inst_t *limit); |
74 | #endif /* _FBT_H */ |
75 | |