darling-xnu/bsd/sys/fbt.h
2023-05-16 21:41:14 -07:00

75 lines
2.7 KiB
C

/*
* Copyright (c) 2005-2006 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#ifndef _FBT_H
#define _FBT_H
#if defined (__x86_64__)
typedef uint8_t machine_inst_t;
#elif defined(__arm__)
typedef uint16_t machine_inst_t;
#elif defined(__arm64__)
typedef uint32_t machine_inst_t;
#else
#error Unknown Architecture
#endif
#define MAX_FBTP_NAME_CHARS 16
typedef struct fbt_probe {
struct fbt_probe *fbtp_hashnext;
machine_inst_t *fbtp_patchpoint;
int8_t fbtp_rval;
machine_inst_t fbtp_patchval;
machine_inst_t fbtp_savedval;
machine_inst_t fbtp_currentval;
uintptr_t fbtp_roffset;
dtrace_id_t fbtp_id;
/* FIXME!
* This field appears to only be used in error messages.
* It puts this structure into the next size bucket in kmem_alloc
* wasting 32 bytes per probe. (in i386 only)
*/
char fbtp_name[MAX_FBTP_NAME_CHARS];
struct modctl *fbtp_ctl;
int fbtp_loadcnt;
struct fbt_probe *fbtp_next;
} fbt_probe_t;
extern int dtrace_invop(uintptr_t, uintptr_t *, uintptr_t);
extern int fbt_invop(uintptr_t, uintptr_t *, uintptr_t);
extern void fbt_provide_module(void *, struct modctl *);
extern int fbt_enable (void *arg, dtrace_id_t id, void *parg);
extern bool fbt_module_excluded(struct modctl*);
extern bool fbt_excluded(const char *);
extern void fbt_blacklist_init(void);
extern void fbt_provide_probe(struct modctl *ctl, const char *modname, const char *name, machine_inst_t *instr, machine_inst_t *limit);
#endif /* _FBT_H */