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