2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1995 Bruce D. Evans.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
34 #ifndef _MACHINE_MD_VAR_H_
35 #define _MACHINE_MD_VAR_H_
37 #include <x86/x86_var.h>
39 extern uint64_t *vm_page_dump;
40 extern int hw_lower_amd64_sharedpage;
41 extern int hw_ibrs_disable;
42 extern int hw_ssb_disable;
45 * The file "conf/ldscript.amd64" defines the symbol "kernphys". Its
46 * value is the physical address at which the kernel is loaded.
48 extern char kernphys[];
53 void amd64_conf_fast_syscall(void);
54 void amd64_db_resume_dbreg(void);
55 void amd64_lower_shared_page(struct sysentvec *);
56 void amd64_syscall(struct thread *td, int traced);
57 void doreti_iret(void) __asm(__STRING(doreti_iret));
58 void doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault));
59 void ld_ds(void) __asm(__STRING(ld_ds));
60 void ld_es(void) __asm(__STRING(ld_es));
61 void ld_fs(void) __asm(__STRING(ld_fs));
62 void ld_gs(void) __asm(__STRING(ld_gs));
63 void ld_fsbase(void) __asm(__STRING(ld_fsbase));
64 void ld_gsbase(void) __asm(__STRING(ld_gsbase));
65 void ds_load_fault(void) __asm(__STRING(ds_load_fault));
66 void es_load_fault(void) __asm(__STRING(es_load_fault));
67 void fs_load_fault(void) __asm(__STRING(fs_load_fault));
68 void gs_load_fault(void) __asm(__STRING(gs_load_fault));
69 void fsbase_load_fault(void) __asm(__STRING(fsbase_load_fault));
70 void gsbase_load_fault(void) __asm(__STRING(gsbase_load_fault));
71 void fpstate_drop(struct thread *td);
72 void pagezero(void *addr);
73 void setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int ist);
74 void sse2_pagezero(void *addr);
75 struct savefpu *get_pcb_user_save_td(struct thread *td);
76 struct savefpu *get_pcb_user_save_pcb(struct pcb *pcb);
78 #endif /* !_MACHINE_MD_VAR_H_ */