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