sys/platform/pc64/include/md_var.h

   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: 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 $
  31  */
  32
  33 #ifndef _MACHINE_MD_VAR_H_
  34 #define _MACHINE_MD_VAR_H_
  35
  36 /*
  37  * Miscellaneous machine-dependent declarations.
  38  */
  39
  40 extern  u_long  atdevbase;      /* offset in virtual memory of ISA io mem */
  41 extern  u_int   basemem;
  42 extern  int     busdma_swi_pending;
  43 extern  u_int   cpu_exthigh;
  44 extern  u_int   cpu_feature;
  45 extern  u_int   cpu_feature2;
  46 extern  u_int   amd_feature;
  47 extern  u_int   amd_feature2;
  48 extern  u_int   cpu_fxsr;
  49 extern  u_int   cpu_high;
  50 extern  u_int   cpu_id;
  51 extern  u_int   cpu_procinfo;
  52 extern  u_int   cpu_procinfo2;
  53 extern  char    cpu_vendor[];
  54 extern  char    kstack[];
  55 extern  char    sigcode[];
  56 extern  int     szsigcode;
  57
  58 typedef void alias_for_inthand_t(u_int cs, u_int ef, u_int esp, u_int ss);
  59 struct  thread;
  60 struct  reg;
  61 struct  fpreg;
  62 struct  dbreg;
  63
  64 void    busdma_swi(void);
  65 void    cpu_setregs(void);
  66 void    doreti_iret(void) __asm(__STRING(doreti_iret));
  67 void    doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault));
  68 void    enable_sse(void);
  69 void    fillw(int /*u_short*/ pat, void *base, size_t cnt);
  70 void    pagezero(void *addr);
  71 int     isa_nmi(int cd);
  72 void    setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int ist);
  73 int     user_dbreg_trap(void);
  74 void    fpstate_drop(struct thread *td);
  75
  76 void    initializecpu(void);
  77 void    cpu_heavy_restore (void);
  78 void    cpu_kthread_restore (void);/* cannot be called from C */
  79
  80 void    cpu_exit_switch (struct thread *next);
  81
  82 void    syscall2 (struct trapframe *);
  83
  84 #endif /* !_MACHINE_MD_VAR_H_ */