1/*-
2 * Copyright (c) 1995 Bruce D. Evans.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: stable/11/sys/amd64/include/md_var.h 366619 2020-10-10 18:22:12Z kib $
30 */
31
32#ifndef _MACHINE_MD_VAR_H_
33#define	_MACHINE_MD_VAR_H_
34
35#include <x86/x86_var.h>
36
37extern uint64_t	*vm_page_dump;
38extern char	ctx_switch_xsave[];
39extern int	hw_lower_amd64_sharedpage;
40extern int	hw_ibrs_disable;
41extern int	hw_ssb_disable;
42extern int	nmi_flush_l1d_sw;
43
44/*
45 * The file "conf/ldscript.amd64" defines the symbol "kernphys".  Its
46 * value is the physical address at which the kernel is loaded.
47 */
48extern char kernphys[];
49
50struct	savefpu;
51struct	sysentvec;
52
53void	amd64_conf_fast_syscall(void);
54void	amd64_db_resume_dbreg(void);
55void	amd64_lower_shared_page(struct sysentvec *);
56void	amd64_syscall(struct thread *td, int traced);
57void	doreti_iret(void) __asm(__STRING(doreti_iret));
58void	doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault));
59void	ld_ds(void) __asm(__STRING(ld_ds));
60void	ld_es(void) __asm(__STRING(ld_es));
61void	ld_fs(void) __asm(__STRING(ld_fs));
62void	ld_gs(void) __asm(__STRING(ld_gs));
63void	ld_fsbase(void) __asm(__STRING(ld_fsbase));
64void	ld_gsbase(void) __asm(__STRING(ld_gsbase));
65void	ds_load_fault(void) __asm(__STRING(ds_load_fault));
66void	es_load_fault(void) __asm(__STRING(es_load_fault));
67void	fs_load_fault(void) __asm(__STRING(fs_load_fault));
68void	gs_load_fault(void) __asm(__STRING(gs_load_fault));
69void	fsbase_load_fault(void) __asm(__STRING(fsbase_load_fault));
70void	gsbase_load_fault(void) __asm(__STRING(gsbase_load_fault));
71void	fpstate_drop(struct thread *td);
72void	pagezero(void *addr);
73void	setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int ist);
74struct savefpu *get_pcb_user_save_td(struct thread *td);
75struct savefpu *get_pcb_user_save_pcb(struct pcb *pcb);
76
77#endif /* !_MACHINE_MD_VAR_H_ */
78