80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
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/* $NetBSD: vm86.h,v 1.1 1996/01/08 13:51:45 mycroft Exp $ */
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/*
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* Copyright (c) 1995 John T. Kohl
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#define SETFLAGS(targ, new, newmask) (targ) = ((targ) & ~(newmask)) | ((new) & (newmask))
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#define VM86_EFLAGS(p) ((p)->p_addr->u_pcb.vm86_eflags)
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#define VM86_FLAGMASK(p) ((p)->p_addr->u_pcb.vm86_flagmask)
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#define VM86_TYPE(x) ((x) & 0xff)
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#define VM86_ARG(x) (((x) & 0xff00) >> 8)
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#define VM86_MAKEVAL(type,arg) ((type) | (((arg) & 0xff) << 8))
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#define VM86_STI 0
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#define VM86_INTx 1
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#define VM86_SIGNAL 2
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#define VM86_UNKNOWN 3
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struct vm86_regs {
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struct sigcontext vmsc;
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};
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struct vm86_kern { /* kernel uses this stuff */
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struct vm86_regs regs;
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unsigned long ss_cpu_type;
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};
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#define cpu_type substr.ss_cpu_type
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/*
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* Kernel keeps copy of user-mode address of this, but doesn't copy it in.
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*/
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struct vm86_struct {
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struct vm86_kern substr;
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unsigned long screen_bitmap; /* not used/supported (yet) */
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unsigned long flags; /* not used/supported (yet) */
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unsigned char int_byuser[32]; /* 256 bits each: pass control to user */
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unsigned char int21_byuser[32]; /* otherwise, handle directly */
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};
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#define BIOSSEG 0x0f000
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#define VCPU_086 0
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#define VCPU_186 1
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#define VCPU_286 2
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#define VCPU_386 3
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#define VCPU_486 4
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#define VCPU_586 5
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#ifdef _KERNEL
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int i386_vm86 __P((struct proc *, char *, register_t *));
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void vm86_gpfault __P((struct proc *, int));
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#else
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int i386_vm86 __P((struct vm86_struct *vmcp));
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#endif
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