what the heck one last one before i go take a nap...
[dragonfly.git] / sys / i386 / include / vm86.h
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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: src/sys/i386/include/vm86.h,v 1.13 1999/09/02 20:59:50 luoqi Exp $
3ae0cd58 30 * $DragonFly: src/sys/i386/include/Attic/vm86.h,v 1.3 2003/08/26 21:42:18 rob Exp $
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31 */
32
33#ifndef _MACHINE_VM86_H_
34#define _MACHINE_VM86_H_ 1
35
36/* standard register representation */
37typedef union {
38 u_int r_ex;
39 struct {
40 u_short r_x;
41 u_int :16;
42 } r_w;
43 struct {
44 u_char r_l;
45 u_char r_h;
46 u_int :16;
47 } r_b;
48} reg86_t;
49
50/* layout must match definition of struct trapframe_vm86 in <machine/frame.h> */
51
52struct vm86frame {
53 int kernel_fs;
54 int kernel_es;
55 int kernel_ds;
56 reg86_t edi;
57 reg86_t esi;
58 reg86_t ebp;
59 reg86_t isp;
60 reg86_t ebx;
61 reg86_t edx;
62 reg86_t ecx;
63 reg86_t eax;
64 int vmf_trapno;
65 int vmf_err;
66 reg86_t eip;
67 reg86_t cs;
68 reg86_t eflags;
69 reg86_t esp;
70 reg86_t ss;
71 reg86_t es;
72 reg86_t ds;
73 reg86_t fs;
74 reg86_t gs;
75#define vmf_ah eax.r_b.r_h
76#define vmf_al eax.r_b.r_l
77#define vmf_ax eax.r_w.r_x
78#define vmf_eax eax.r_ex
79#define vmf_bh ebx.r_b.r_h
80#define vmf_bl ebx.r_b.r_l
81#define vmf_bx ebx.r_w.r_x
82#define vmf_ebx ebx.r_ex
83#define vmf_ch ecx.r_b.r_h
84#define vmf_cl ecx.r_b.r_l
85#define vmf_cx ecx.r_w.r_x
86#define vmf_ecx ecx.r_ex
87#define vmf_dh edx.r_b.r_h
88#define vmf_dl edx.r_b.r_l
89#define vmf_dx edx.r_w.r_x
90#define vmf_edx edx.r_ex
91#define vmf_si esi.r_w.r_x
92#define vmf_di edi.r_w.r_x
93#define vmf_cs cs.r_w.r_x
94#define vmf_ds ds.r_w.r_x
95#define vmf_es es.r_w.r_x
96#define vmf_ss ss.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 3
104#define VMAP_MALLOC 1 /* page was malloced by us */
105
106struct vm86context {
107 int npages;
108 struct vm86pmap {
109 int flags;
110 int pte_num;
111 vm_offset_t kva;
112 u_int old_pte;
113 } pmap[VM86_PMAPSIZE];
114};
115
116#define VM_USERCHANGE (PSL_USERCHANGE | PSL_RF)
117#define VME_USERCHANGE (VM_USERCHANGE | PSL_VIP | PSL_VIF)
118
119struct 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
133struct 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
139struct vm86_vme_args {
140 int state; /* status */
141};
142
143struct vm86_intcall_args {
144 int intnum;
145 struct vm86frame vmf;
146};
147
148extern int in_vm86call;
149extern int vm86paddr;
150
151struct proc;
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152extern int vm86_emulate (struct vm86frame *);
153extern int vm86_sysarch (struct proc *, char *);
154extern void vm86_trap (struct vm86frame *);
155extern int vm86_intcall (int, struct vm86frame *);
156extern int vm86_datacall (int, struct vm86frame *, struct vm86context *);
157extern void vm86_initialize (void);
158extern vm_offset_t vm86_getpage (struct vm86context *, int);
159extern vm_offset_t vm86_addpage (struct vm86context *, int, vm_offset_t);
160extern int vm86_getptr (struct vm86context *, vm_offset_t,
161 u_short *, u_short *);
162
163extern vm_offset_t vm86_getaddr (struct vm86context *, u_short, u_short);
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164
165#endif /* _MACHINE_VM86_H_ */