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 * $Id: md_var.h,v 1.14 1997/06/07 04:36:05 bde Exp $ 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 int Maxmem; 40 extern u_int atdevbase; /* offset in virtual memory of ISA io mem */ 41 extern u_long cpu_feature; 42 extern u_long cpu_high; 43 extern u_long cpu_id; 44 extern u_long cyrix_did; 45 extern char cpu_vendor[]; 46 extern char etext[]; 47 extern char kstack[]; 48 extern void (*netisrs[32]) __P((void)); 49 extern int nfs_diskless_valid; 50 extern char sigcode[]; 51 extern int szsigcode; 52 53 typedef void alias_for_inthand_t __P((u_int cs, u_int ef, u_int esp, u_int ss)); 54 struct proc; 55 struct reg; 56 57 void bcopyb __P((const void *from, void *to, size_t len)); 58 void cpu_reset __P((void)); 59 void cpu_halt __P((void)); 60 void cpu_power_down __P((void)); 61 void cpu_switch_load_fs __P((void)) __asm(__STRING(cpu_switch_load_fs)); 62 void cpu_switch_load_gs __P((void)) __asm(__STRING(cpu_switch_load_gs)); 63 void doreti_iret __P((void)) __asm(__STRING(doreti_iret)); 64 void doreti_iret_fault __P((void)) __asm(__STRING(doreti_iret_fault)); 65 void doreti_popl_ds __P((void)) __asm(__STRING(doreti_popl_ds)); 66 void doreti_popl_ds_fault __P((void)) __asm(__STRING(doreti_popl_ds_fault)); 67 void doreti_popl_es __P((void)) __asm(__STRING(doreti_popl_es)); 68 void doreti_popl_es_fault __P((void)) __asm(__STRING(doreti_popl_es_fault)); 69 int fill_regs __P((struct proc *p, struct reg *regs)); 70 void fillw __P((int /*u_short*/ pat, void *base, size_t cnt)); 71 int fusword __P((void *base)); 72 u_long kvtop __P((void *addr)); 73 void setidt __P((int idx, alias_for_inthand_t *func, int typ, int dpl, 74 int selec)); 75 void userconfig __P((void)); 76 void vm_bounce_init __P((void)); 77 int vm_page_zero_idle __P((void)); 78 79 #ifdef PC98 80 extern int need_pre_dma_flush; 81 extern int need_post_dma_flush; 82 #endif 83 84 #endif /* !_MACHINE_MD_VAR_H_ */ 85