1b5e8ce9fSBruce Evans /*- 2b5e8ce9fSBruce Evans * Copyright (c) 1995 Bruce D. Evans. 3b5e8ce9fSBruce Evans * All rights reserved. 4b5e8ce9fSBruce Evans * 5b5e8ce9fSBruce Evans * Redistribution and use in source and binary forms, with or without 6b5e8ce9fSBruce Evans * modification, are permitted provided that the following conditions 7b5e8ce9fSBruce Evans * are met: 8b5e8ce9fSBruce Evans * 1. Redistributions of source code must retain the above copyright 9b5e8ce9fSBruce Evans * notice, this list of conditions and the following disclaimer. 10b5e8ce9fSBruce Evans * 2. Redistributions in binary form must reproduce the above copyright 11b5e8ce9fSBruce Evans * notice, this list of conditions and the following disclaimer in the 12b5e8ce9fSBruce Evans * documentation and/or other materials provided with the distribution. 13b5e8ce9fSBruce Evans * 3. Neither the name of the author nor the names of contributors 14b5e8ce9fSBruce Evans * may be used to endorse or promote products derived from this software 15b5e8ce9fSBruce Evans * without specific prior written permission. 16b5e8ce9fSBruce Evans * 17b5e8ce9fSBruce Evans * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18b5e8ce9fSBruce Evans * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19b5e8ce9fSBruce Evans * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20b5e8ce9fSBruce Evans * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21b5e8ce9fSBruce Evans * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22b5e8ce9fSBruce Evans * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23b5e8ce9fSBruce Evans * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24b5e8ce9fSBruce Evans * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25b5e8ce9fSBruce Evans * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26b5e8ce9fSBruce Evans * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27b5e8ce9fSBruce Evans * SUCH DAMAGE. 28b5e8ce9fSBruce Evans * 29c3aac50fSPeter Wemm * $FreeBSD$ 30b5e8ce9fSBruce Evans */ 31b5e8ce9fSBruce Evans 32b5e8ce9fSBruce Evans #ifndef _MACHINE_MD_VAR_H_ 33b5e8ce9fSBruce Evans #define _MACHINE_MD_VAR_H_ 34b5e8ce9fSBruce Evans 35b5e8ce9fSBruce Evans /* 36b5e8ce9fSBruce Evans * Miscellaneous machine-dependent declarations. 37b5e8ce9fSBruce Evans */ 38b5e8ce9fSBruce Evans 399f45b2daSDag-Erling Smørgrav extern long Maxmem; 40eeee69d4SPeter Wemm extern u_long atdevbase; /* offset in virtual memory of ISA io mem */ 410d2a2989SPeter Wemm extern u_int basemem; 429f45b2daSDag-Erling Smørgrav extern int busdma_swi_pending; 4326aa6d02SJohn Baldwin extern u_int cpu_exthigh; 4488bf59fcSBruce Evans extern u_int cpu_feature; 459d146ac5SPeter Wemm extern u_int cpu_fxsr; 4610deca7eSJohn Baldwin extern u_int cpu_high; 4710deca7eSJohn Baldwin extern u_int cpu_id; 4810deca7eSJohn Baldwin extern u_int cpu_procinfo; 49b5e8ce9fSBruce Evans extern char cpu_vendor[]; 50b5e8ce9fSBruce Evans extern char kstack[]; 51d66a5066SPeter Wemm extern char sigcode[]; 5223eeeff7SPeter Wemm extern int szsigcode; 530d2a2989SPeter Wemm 540d2a2989SPeter Wemm extern struct pcpu __pcpu[]; 55b5e8ce9fSBruce Evans 56b63dc6adSAlfred Perlstein typedef void alias_for_inthand_t(u_int cs, u_int ef, u_int esp, u_int ss); 57b40ce416SJulian Elischer struct thread; 58b5e8ce9fSBruce Evans struct reg; 591a291e0cSJohn Polstra struct fpreg; 60ab001a72SJonathan Lemon struct dbreg; 61b5e8ce9fSBruce Evans 62b63dc6adSAlfred Perlstein void busdma_swi(void); 63b63dc6adSAlfred Perlstein void cpu_setregs(void); 64b63dc6adSAlfred Perlstein void doreti_iret(void) __asm(__STRING(doreti_iret)); 65b63dc6adSAlfred Perlstein void doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault)); 6610deca7eSJohn Baldwin void enable_sse(void); 67b63dc6adSAlfred Perlstein void fillw(int /*u_short*/ pat, void *base, size_t cnt); 68c64b7013SAlan Cox void fpstate_drop(struct thread *td); 69b63dc6adSAlfred Perlstein int is_physical_memory(vm_offset_t addr); 700d2a2989SPeter Wemm int isa_nmi(int cd); 71c64b7013SAlan Cox void pagecopy(void *from, void *to); 72c64b7013SAlan Cox void pagezero(void *addr); 73afa88623SPeter Wemm void setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int ist); 74170a0551SPeter Wemm int user_dbreg_trap(void); 75b5e8ce9fSBruce Evans 76b5e8ce9fSBruce Evans #endif /* !_MACHINE_MD_VAR_H_ */ 77