1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 1997 Jonathan Lemon 5 * All rights reserved. 6 * 7 * Derived from register.h, which is 8 * Copyright (c) 1996 Michael Smith. All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 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_bp ebp.r_w.r_x 97 #define vmf_sp esp.r_w.r_x 98 #define vmf_ip eip.r_w.r_x 99 #define vmf_flags eflags.r_w.r_x 100 #define vmf_eflags eflags.r_ex 101 }; 102 103 #define VM86_PMAPSIZE 24 104 #define VMAP_MALLOC 1 /* page was malloced by us */ 105 106 struct vm86context { 107 int npages; 108 struct vm86pmap { 109 int flags; 110 int pte_num; 111 vm_offset_t kva; 112 uint64_t old_pte; 113 } pmap[VM86_PMAPSIZE]; 114 }; 115 116 #define VM_USERCHANGE (PSL_USERCHANGE) 117 #define VME_USERCHANGE (VM_USERCHANGE | PSL_VIP | PSL_VIF) 118 119 struct vm86_kernel { 120 caddr_t vm86_intmap; /* interrupt map */ 121 u_int vm86_eflags; /* emulated flags */ 122 int vm86_has_vme; /* VME support */ 123 int vm86_inited; /* we were initialized */ 124 int vm86_debug; 125 caddr_t vm86_sproc; /* address of sproc */ 126 }; 127 128 #define VM86_INIT 1 129 #define VM86_SET_VME 2 130 #define VM86_GET_VME 3 131 #define VM86_INTCALL 4 132 133 struct vm86_init_args { 134 int debug; /* debug flag */ 135 int cpu_type; /* cpu type to emulate */ 136 u_char int_map[32]; /* interrupt map */ 137 }; 138 139 struct vm86_vme_args { 140 int state; /* status */ 141 }; 142 143 struct vm86_intcall_args { 144 int intnum; 145 struct vm86frame vmf; 146 }; 147 148 #ifdef _KERNEL 149 extern int vm86paddr; 150 151 struct thread; 152 extern int vm86_emulate(struct vm86frame *); 153 extern int vm86_sysarch(struct thread *, char *); 154 extern void vm86_trap(struct vm86frame *); 155 extern int vm86_intcall(int, struct vm86frame *); 156 extern int vm86_datacall(int, struct vm86frame *, struct vm86context *); 157 extern void vm86_initialize(void); 158 extern vm_offset_t vm86_getpage(struct vm86context *, int); 159 extern vm_offset_t vm86_addpage(struct vm86context *, int, vm_offset_t); 160 extern int vm86_getptr(struct vm86context *, vm_offset_t, u_short *, u_short *); 161 162 extern vm_offset_t vm86_getaddr(struct vm86context *, u_short, u_short); 163 #endif /* _KERNEL */ 164 165 #endif /* _MACHINE_VM86_H_ */ 166