Ubixos: btxv86.h Source File

00001 /*
00002  * Copyright (c) 1998 Robert Nordier
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms are freely
00006  * permitted provided that the above copyright notice and this
00007  * paragraph and the following disclaimer are duplicated in all
00008  * such forms.
00009  *
00010  * This software is provided "AS IS" and without any express or
00011  * implied warranties, including, without limitation, the implied
00012  * warranties of merchantability and fitness for a particular
00013  * purpose.
00014  */
00015 
00016 /*
00017  * $FreeBSD: src/sys/boot/i386/btx/lib/btxv86.h,v 1.5 1999/08/28 00:40:08 peter Exp $
00018  */
00019 
00020 #ifndef _BTXV86_H_
00021 #define _BTXV86_H_
00022 
00023 #include <sys/types.h>
00024 
00025 #define V86_ADDR   0x10000      /* Segment:offset address */
00026 #define V86_CALLF  0x20000      /* Emulate far call */
00027 #define V86_FLAGS  0x40000      /* Return flags */
00028 
00029 struct __v86 {
00030     uint32_t ctl;               /* Control flags */
00031     uint32_t addr;              /* Interrupt number or address */
00032     uint32_t es;                /* V86 ES register */
00033     uint32_t ds;                /* V86 DS register */
00034     uint32_t fs;                /* V86 FS register */
00035     uint32_t gs;                /* V86 GS register */
00036     uint32_t eax;               /* V86 EAX register */
00037     uint32_t ecx;               /* V86 ECX register */
00038     uint32_t edx;               /* V86 EDX register */
00039     uint32_t ebx;               /* V86 EBX register */
00040     uint32_t efl;               /* V86 eflags register */
00041     uint32_t ebp;               /* V86 EBP register */
00042     uint32_t esi;               /* V86 ESI register */
00043     uint32_t edi;               /* V86 EDI register */
00044 };
00045 
00046 extern struct __v86 __v86;      /* V86 interface structure */
00047 void __v86int(void);
00048 
00049 #define v86     __v86
00050 #define v86int  __v86int
00051 
00052 extern u_int32_t        __base;
00053 extern u_int32_t        __args;
00054 
00055 #define PTOV(pa)        ((caddr_t)(pa) - __base)
00056 #define VTOP(va)        ((vm_offset_t)(va) + __base)
00057 #define VTOPSEG(va)     (u_int16_t)(VTOP((caddr_t)va) >> 4)
00058 #define VTOPOFF(va)     (u_int16_t)(VTOP((caddr_t)va) & 0xf)
00059 
00060 void __exit(int) __attribute__((__noreturn__));
00061 void __exec(caddr_t, ...);
00062 
00063 #endif /* !_BTXV86_H_ */