xref: /freebsd/sys/amd64/include/md_var.h (revision 4f52dfbb8d6c4d446500c5b097e3806ec219fbd4)
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  * $FreeBSD$
32  */
33 
34 #ifndef _MACHINE_MD_VAR_H_
35 #define	_MACHINE_MD_VAR_H_
36 
37 #include <x86/x86_var.h>
38 
39 extern uint64_t	*vm_page_dump;
40 extern int	hw_lower_amd64_sharedpage;
41 extern 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  */
47 extern char kernphys[];
48 
49 struct	savefpu;
50 struct	sysentvec;
51 
52 void	amd64_conf_fast_syscall(void);
53 void	amd64_db_resume_dbreg(void);
54 void	amd64_lower_shared_page(struct sysentvec *);
55 void	amd64_syscall(struct thread *td, int traced);
56 void	doreti_iret(void) __asm(__STRING(doreti_iret));
57 void	doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault));
58 void	ld_ds(void) __asm(__STRING(ld_ds));
59 void	ld_es(void) __asm(__STRING(ld_es));
60 void	ld_fs(void) __asm(__STRING(ld_fs));
61 void	ld_gs(void) __asm(__STRING(ld_gs));
62 void	ld_fsbase(void) __asm(__STRING(ld_fsbase));
63 void	ld_gsbase(void) __asm(__STRING(ld_gsbase));
64 void	ds_load_fault(void) __asm(__STRING(ds_load_fault));
65 void	es_load_fault(void) __asm(__STRING(es_load_fault));
66 void	fs_load_fault(void) __asm(__STRING(fs_load_fault));
67 void	gs_load_fault(void) __asm(__STRING(gs_load_fault));
68 void	fsbase_load_fault(void) __asm(__STRING(fsbase_load_fault));
69 void	gsbase_load_fault(void) __asm(__STRING(gsbase_load_fault));
70 void	fpstate_drop(struct thread *td);
71 void	pagezero(void *addr);
72 void	setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int ist);
73 void	sse2_pagezero(void *addr);
74 struct savefpu *get_pcb_user_save_td(struct thread *td);
75 struct savefpu *get_pcb_user_save_pcb(struct pcb *pcb);
76 
77 #endif /* !_MACHINE_MD_VAR_H_ */
78