2 * Copyright (c) 1995 Bruce D. Evans.
3 * Copyright (c) 2008 The DragonFly Project.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the author nor the names of contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * $FreeBSD: src/sys/amd64/include/md_var.h,v 1.71 2004/01/29 00:05:03 peter Exp $
31 * $DragonFly: src/sys/platform/pc64/include/md_var.h,v 1.5 2008/08/29 17:07:17 dillon Exp $
34 #ifndef _MACHINE_MD_VAR_H_
35 #define _MACHINE_MD_VAR_H_
37 #include <machine/globaldata.h>
40 * Miscellaneous machine-dependent declarations.
43 extern u_long atdevbase
; /* offset in virtual memory of ISA io mem */
45 extern int busdma_swi_pending
;
46 extern void (*cpu_idle_hook
)(void);
47 extern u_int cpu_exthigh
;
48 extern u_int amd_feature
;
49 extern u_int amd_feature2
;
50 extern u_int cpu_fxsr
;
51 extern u_int cpu_high
;
53 extern u_int cpu_procinfo
;
54 extern u_int cpu_procinfo2
;
55 extern char cpu_vendor
[];
57 extern char sigcode
[];
60 typedef void alias_for_inthand_t(u_int cs
, u_int ef
, u_int esp
, u_int ss
);
67 void busdma_swi(void);
68 void cpu_gdinit (struct mdglobaldata
*gd
, int cpu
);
69 void cpu_idle_restore (void); /* cannot be called from C */
70 void cpu_setregs(void);
71 void doreti_iret(void) __asm(__STRING(doreti_iret
));
72 void doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault
));
73 void enable_sse(void);
74 void fillw(int /*u_short*/ pat
, void *base
, size_t cnt
);
75 void pagezero(void *addr
);
77 void pagecopy(void *from
, void *to
);
78 void setidt(int idx
, alias_for_inthand_t
*func
, int typ
, int dpl
, int ist
);
79 int user_dbreg_trap(void);
80 void fpstate_drop(struct thread
*td
);
82 void npxpush(struct __mcontext
*mctx
);
83 void npxpop(struct __mcontext
*mctx
);
85 void cpu_heavy_restore (void);
86 void cpu_kthread_restore (void);/* cannot be called from C */
88 void cpu_exit_switch (struct thread
*next
);
90 void syscall2 (struct trapframe
*);
92 #endif /* !_MACHINE_MD_VAR_H_ */