1 /*- 2 * Copyright (c) 1997 Jonathan Lemon 3 * All rights reserved. 4 * 5 * Derived from register.h, which is 6 * Copyright (c) 1996 Michael Smith. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 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 * $FreeBSD$ 30 */ 31 32 #ifndef _MACHINE_VM86_H_ 33 #define _MACHINE_VM86_H_ 1 34 35 /* standard register representation */ 36 typedef union { 37 u_int r_ex; 38 struct { 39 u_short r_x; 40 u_int :16; 41 } r_w; 42 struct { 43 u_char r_l; 44 u_char r_h; 45 u_int :16; 46 } r_b; 47 } reg86_t; 48 49 /* layout must match definition of struct trapframe_vm86 in <machine/frame.h> */ 50 51 struct vm86frame { 52 int kernel_fs; 53 int kernel_es; 54 int kernel_ds; 55 reg86_t edi; 56 reg86_t esi; 57 reg86_t ebp; 58 reg86_t isp; 59 reg86_t ebx; 60 reg86_t edx; 61 reg86_t ecx; 62 reg86_t eax; 63 int vmf_trapno; 64 int vmf_err; 65 reg86_t eip; 66 reg86_t cs; 67 reg86_t eflags; 68 reg86_t esp; 69 reg86_t ss; 70 reg86_t es; 71 reg86_t ds; 72 reg86_t fs; 73 reg86_t gs; 74 #define vmf_ah eax.r_b.r_h 75 #define vmf_al eax.r_b.r_l 76 #define vmf_ax eax.r_w.r_x 77 #define vmf_eax eax.r_ex 78 #define vmf_bh ebx.r_b.r_h 79 #define vmf_bl ebx.r_b.r_l 80 #define vmf_bx ebx.r_w.r_x 81 #define vmf_ebx ebx.r_ex 82 #define vmf_ch ecx.r_b.r_h 83 #define vmf_cl ecx.r_b.r_l 84 #define vmf_cx ecx.r_w.r_x 85 #define vmf_ecx ecx.r_ex 86 #define vmf_dh edx.r_b.r_h 87 #define vmf_dl edx.r_b.r_l 88 #define vmf_dx edx.r_w.r_x 89 #define vmf_edx edx.r_ex 90 #define vmf_si esi.r_w.r_x 91 #define vmf_di edi.r_w.r_x 92 #define vmf_cs cs.r_w.r_x 93 #define vmf_ds ds.r_w.r_x 94 #define vmf_es es.r_w.r_x 95 #define vmf_ss ss.r_w.r_x 96 #define vmf_sp esp.r_w.r_x 97 #define vmf_ip eip.r_w.r_x 98 #define vmf_flags eflags.r_w.r_x 99 #define vmf_eflags eflags.r_ex 100 }; 101 102 #define VM86_PMAPSIZE 3 103 #define VMAP_MALLOC 1 /* page was malloced by us */ 104 105 struct vm86context { 106 int npages; 107 struct vm86pmap { 108 int flags; 109 int pte_num; 110 vm_offset_t kva; 111 u_int old_pte; 112 } pmap[VM86_PMAPSIZE]; 113 }; 114 115 #define VM_USERCHANGE (PSL_USERCHANGE | PSL_RF) 116 #define VME_USERCHANGE (VM_USERCHANGE | PSL_VIP | PSL_VIF) 117 118 struct vm86_kernel { 119 caddr_t vm86_intmap; /* interrupt map */ 120 u_int vm86_eflags; /* emulated flags */ 121 int vm86_has_vme; /* VME support */ 122 int vm86_inited; /* we were initialized */ 123 int vm86_debug; 124 caddr_t vm86_sproc; /* address of sproc */ 125 }; 126 127 #define VM86_INIT 1 128 #define VM86_SET_VME 2 129 #define VM86_GET_VME 3 130 #define VM86_INTCALL 4 131 132 struct vm86_init_args { 133 int debug; /* debug flag */ 134 int cpu_type; /* cpu type to emulate */ 135 u_char int_map[32]; /* interrupt map */ 136 }; 137 138 struct vm86_vme_args { 139 int state; /* status */ 140 }; 141 142 struct vm86_intcall_args { 143 int intnum; 144 struct vm86frame vmf; 145 }; 146 147 #ifdef _KERNEL 148 extern int vm86paddr; 149 150 struct thread; 151 extern int vm86_emulate(struct vm86frame *); 152 extern int vm86_sysarch(struct thread *, char *); 153 extern void vm86_trap(struct vm86frame *); 154 extern int vm86_intcall(int, struct vm86frame *); 155 extern int vm86_datacall(int, struct vm86frame *, struct vm86context *); 156 extern void vm86_initialize(void); 157 extern vm_offset_t vm86_getpage(struct vm86context *, int); 158 extern vm_offset_t vm86_addpage(struct vm86context *, int, vm_offset_t); 159 extern int vm86_getptr(struct vm86context *, vm_offset_t, u_short *, u_short *); 160 161 extern vm_offset_t vm86_getaddr(struct vm86context *, u_short, u_short); 162 #endif /* _KERNEL */ 163 164 #endif /* _MACHINE_VM86_H_ */ 165