2 * Copyright (c) 1995 Bruce D. Evans.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 * $FreeBSD: src/sys/amd64/include/md_var.h,v 1.71 2004/01/29 00:05:03 peter Exp $
30 * $DragonFly: src/sys/platform/pc64/include/md_var.h,v 1.3 2007/09/23 04:29:31 yanyh Exp $
33 #ifndef _MACHINE_MD_VAR_H_
34 #define _MACHINE_MD_VAR_H_
37 * Miscellaneous machine-dependent declarations.
40 extern u_long atdevbase; /* offset in virtual memory of ISA io mem */
42 extern int busdma_swi_pending;
43 extern u_int cpu_exthigh;
44 extern u_int cpu_fxsr;
45 extern u_int cpu_high;
47 extern u_int cpu_procinfo;
48 extern char cpu_vendor[];
50 extern char sigcode[];
53 typedef void alias_for_inthand_t(u_int cs, u_int ef, u_int esp, u_int ss);
59 void busdma_swi(void);
60 void cpu_setregs(void);
61 void doreti_iret(void) __asm(__STRING(doreti_iret));
62 void doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault));
63 void enable_sse(void);
64 void fillw(int /*u_short*/ pat, void *base, size_t cnt);
65 void pagezero(void *addr);
67 void setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int ist);
68 int user_dbreg_trap(void);
69 void fpstate_drop(struct thread *td);
71 void cpu_heavy_restore (void);
72 void cpu_kthread_restore (void);/* cannot be called from C */
74 void cpu_exit_switch (struct thread *next);
76 void syscall2 (struct trapframe *);
78 #endif /* !_MACHINE_MD_VAR_H_ */