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 1.4 2007/12/12 23:49:23 dillon 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_fxsr; 45 extern u_int cpu_high; 46 extern u_int cpu_id; 47 extern u_int cpu_procinfo; 48 extern char cpu_vendor[]; 49 extern char kstack[]; 50 extern char sigcode[]; 51 extern int szsigcode; 52 53 typedef void alias_for_inthand_t(u_int cs, u_int ef, u_int esp, u_int ss); 54 struct thread; 55 struct reg; 56 struct fpreg; 57 struct dbreg; 58 struct __mcontext; 59 60 void busdma_swi(void); 61 void cpu_setregs(void); 62 void doreti_iret(void) __asm(__STRING(doreti_iret)); 63 void doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault)); 64 void enable_sse(void); 65 void fillw(int /*u_short*/ pat, void *base, size_t cnt); 66 void pagezero(void *addr); 67 int isa_nmi(int cd); 68 void setidt(int idx, alias_for_inthand_t *func, int typ, int dpl, int ist); 69 int user_dbreg_trap(void); 70 void fpstate_drop(struct thread *td); 71 72 void npxpush(struct __mcontext *mctx); 73 void npxpop(struct __mcontext *mctx); 74 75 void cpu_heavy_restore (void); 76 void cpu_kthread_restore (void);/* cannot be called from C */ 77 78 void cpu_exit_switch (struct thread *next); 79 80 void syscall2 (struct trapframe *); 81 82 #endif /* !_MACHINE_MD_VAR_H_ */ 83