1 /* 2 * Copyright (c) 1998 Robert Nordier 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are freely 6 * permitted provided that the above copyright notice and this 7 * paragraph and the following disclaimer are duplicated in all 8 * such forms. 9 * 10 * This software is provided "AS IS" and without any express or 11 * implied warranties, including, without limitation, the implied 12 * warranties of merchantability and fitness for a particular 13 * purpose. 14 */ 15 16 /* 17 * $FreeBSD: src/sys/boot/i386/btx/lib/btxv86.h,v 1.5 1999/08/28 00:40:08 peter Exp $ 18 */ 19 20 #ifndef _BTXV86_H_ 21 #define _BTXV86_H_ 22 23 #include <sys/types.h> 24 #include <machine/types.h> /* XXX for vm_offset_t */ 25 26 #define V86_ADDR 0x10000 /* Segment:offset address */ 27 #define V86_CALLF 0x20000 /* Emulate far call */ 28 #define V86_FLAGS 0x40000 /* Return flags */ 29 30 struct __v86 { 31 uint32_t ctl; /* Control flags */ 32 uint32_t addr; /* Interrupt number or address */ 33 uint32_t es; /* V86 ES register */ 34 uint32_t ds; /* V86 DS register */ 35 uint32_t fs; /* V86 FS register */ 36 uint32_t gs; /* V86 GS register */ 37 uint32_t eax; /* V86 EAX register */ 38 uint32_t ecx; /* V86 ECX register */ 39 uint32_t edx; /* V86 EDX register */ 40 uint32_t ebx; /* V86 EBX register */ 41 uint32_t efl; /* V86 eflags register */ 42 uint32_t ebp; /* V86 EBP register */ 43 uint32_t esi; /* V86 ESI register */ 44 uint32_t edi; /* V86 EDI register */ 45 }; 46 47 extern struct __v86 __v86; /* V86 interface structure */ 48 void __v86int(void); 49 50 #define v86 __v86 51 #define v86int __v86int 52 53 extern u_int32_t __base; 54 extern u_int32_t __args; 55 56 #define PTOV(pa) ((caddr_t)(pa) - __base) 57 #define VTOP(va) ((vm_offset_t)(va) + __base) 58 #define VTOPSEG(va) (u_int16_t)(VTOP((caddr_t)va) >> 4) 59 #define VTOPOFF(va) (u_int16_t)(VTOP((caddr_t)va) & 0xf) 60 61 void __exit(int) __attribute__((__noreturn__)); 62 void __exec(caddr_t, ...); 63 64 #endif /* !_BTXV86_H_ */ 65