The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/include/md_var.h

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    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: releng/5.0/sys/i386/include/md_var.h 105950 2002-10-25 19:10:58Z peter $
   30  */
   31 
   32 #ifndef _MACHINE_MD_VAR_H_
   33 #define _MACHINE_MD_VAR_H_
   34 
   35 /*
   36  * Miscellaneous machine-dependent declarations.
   37  */
   38 
   39 extern  long    Maxmem;
   40 extern  u_int   atdevbase;      /* offset in virtual memory of ISA io mem */
   41 extern  void    (*bcopy_vector)(const void *from, void *to, size_t len);
   42 extern  int     busdma_swi_pending;
   43 extern  int     (*copyin_vector)(const void *udaddr, void *kaddr, size_t len);
   44 extern  int     (*copyout_vector)(const void *kaddr, void *udaddr, size_t len);
   45 extern  u_int   cpu_feature;
   46 extern  u_int   cpu_high;
   47 extern  u_int   cpu_id;
   48 extern  u_int   cpu_fxsr;
   49 extern  char    cpu_vendor[];
   50 extern  u_int   cyrix_did;
   51 extern  uint16_t *elan_mmcr;
   52 extern  char    kstack[];
   53 #ifdef PC98
   54 extern  int     need_pre_dma_flush;
   55 extern  int     need_post_dma_flush;
   56 #endif
   57 extern  void    (*ovbcopy_vector)(const void *from, void *to, size_t len);
   58 extern  char    sigcode[];
   59 extern  int     szsigcode;
   60 #ifdef COMPAT_FREEBSD4
   61 extern  int     szfreebsd4_sigcode;
   62 #endif
   63 #ifdef COMPAT_43
   64 extern  int     szosigcode;
   65 #endif
   66 
   67 typedef void alias_for_inthand_t(u_int cs, u_int ef, u_int esp, u_int ss);
   68 struct  thread;
   69 struct  reg;
   70 struct  fpreg;
   71 struct  dbreg;
   72 
   73 void    bcopyb(const void *from, void *to, size_t len);
   74 void    busdma_swi(void);
   75 void    cpu_halt(void);
   76 void    cpu_reset(void);
   77 void    cpu_setregs(void);
   78 void    cpu_switch_load_gs(void) __asm(__STRING(cpu_switch_load_gs));
   79 void    doreti_iret(void) __asm(__STRING(doreti_iret));
   80 void    doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault));
   81 void    doreti_popl_ds(void) __asm(__STRING(doreti_popl_ds));
   82 void    doreti_popl_ds_fault(void) __asm(__STRING(doreti_popl_ds_fault));
   83 void    doreti_popl_es(void) __asm(__STRING(doreti_popl_es));
   84 void    doreti_popl_es_fault(void) __asm(__STRING(doreti_popl_es_fault));
   85 void    doreti_popl_fs(void) __asm(__STRING(doreti_popl_fs));
   86 void    doreti_popl_fs_fault(void) __asm(__STRING(doreti_popl_fs_fault));
   87 void    fillw(int /*u_short*/ pat, void *base, size_t cnt);
   88 void    i486_bzero(void *buf, size_t len);
   89 void    i586_bcopy(const void *from, void *to, size_t len);
   90 void    i586_bzero(void *buf, size_t len);
   91 int     i586_copyin(const void *udaddr, void *kaddr, size_t len);
   92 int     i586_copyout(const void *kaddr, void *udaddr, size_t len);
   93 void    i686_pagezero(void *addr);
   94 void    init_AMD_Elan_sc520(void);
   95 int     is_physical_memory(vm_offset_t addr);
   96 u_long  kvtop(void *addr);
   97 void    setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int selec);
   98 void    swi_vm(void *);
   99 int     user_dbreg_trap(void);
  100 
  101 #endif /* !_MACHINE_MD_VAR_H_ */

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