md_var.h revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1995 Bruce D. Evans.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the author nor the names of contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * $FreeBSD: stable/11/sys/amd64/include/md_var.h 330897 2018-03-14 03:19:51Z eadler $
32 */
33
34#ifndef _MACHINE_MD_VAR_H_
35#define	_MACHINE_MD_VAR_H_
36
37#include <x86/x86_var.h>
38
39extern uint64_t	*vm_page_dump;
40extern int	hw_lower_amd64_sharedpage;
41extern int	hw_ibrs_disable;
42
43/*
44 * The file "conf/ldscript.amd64" defines the symbol "kernphys".  Its
45 * value is the physical address at which the kernel is loaded.
46 */
47extern char kernphys[];
48
49struct	savefpu;
50struct	sysentvec;
51
52void	amd64_conf_fast_syscall(void);
53void	amd64_db_resume_dbreg(void);
54void	amd64_lower_shared_page(struct sysentvec *);
55void	amd64_syscall(struct thread *td, int traced);
56void	doreti_iret(void) __asm(__STRING(doreti_iret));
57void	doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault));
58void	ld_ds(void) __asm(__STRING(ld_ds));
59void	ld_es(void) __asm(__STRING(ld_es));
60void	ld_fs(void) __asm(__STRING(ld_fs));
61void	ld_gs(void) __asm(__STRING(ld_gs));
62void	ld_fsbase(void) __asm(__STRING(ld_fsbase));
63void	ld_gsbase(void) __asm(__STRING(ld_gsbase));
64void	ds_load_fault(void) __asm(__STRING(ds_load_fault));
65void	es_load_fault(void) __asm(__STRING(es_load_fault));
66void	fs_load_fault(void) __asm(__STRING(fs_load_fault));
67void	gs_load_fault(void) __asm(__STRING(gs_load_fault));
68void	fsbase_load_fault(void) __asm(__STRING(fsbase_load_fault));
69void	gsbase_load_fault(void) __asm(__STRING(gsbase_load_fault));
70void	fpstate_drop(struct thread *td);
71void	pagezero(void *addr);
72void	setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int ist);
73struct savefpu *get_pcb_user_save_td(struct thread *td);
74struct savefpu *get_pcb_user_save_pcb(struct pcb *pcb);
75
76#endif /* !_MACHINE_MD_VAR_H_ */
77