/* * Copyright (c) 1998 Robert Nordier * All rights reserved. * * Redistribution and use in source and binary forms are freely * permitted provided that the above copyright notice and this * paragraph and the following disclaimer are duplicated in all * such forms. * * This software is provided "AS IS" and without any express or * implied warranties, including, without limitation, the implied * warranties of merchantability and fitness for a particular * purpose. */ /* * $FreeBSD$ */ #ifndef _BTXV86_H_ #define _BTXV86_H_ #include <sys/types.h> #include <machine/psl.h> /* * Memory buffer space for real mode IO. * Just one page is not much, but the space is rather limited. * See ../btx/btx.S for details. */ #define V86_IO_BUFFER 0x8000 #define V86_IO_BUFFER_SIZE 0x1000 #define V86_ADDR 0x10000 /* Segment:offset address */ #define V86_CALLF 0x20000 /* Emulate far call */ #define V86_FLAGS 0x40000 /* Return flags */ struct __v86 { uint32_t ctl; /* Control flags */ uint32_t addr; /* Interrupt number or address */ uint32_t es; /* V86 ES register */ uint32_t ds; /* V86 DS register */ uint32_t fs; /* V86 FS register */ uint32_t gs; /* V86 GS register */ uint32_t eax; /* V86 EAX register */ uint32_t ecx; /* V86 ECX register */ uint32_t edx; /* V86 EDX register */ uint32_t ebx; /* V86 EBX register */ uint32_t efl; /* V86 eflags register */ uint32_t ebp; /* V86 EBP register */ uint32_t esi; /* V86 ESI register */ uint32_t edi; /* V86 EDI register */ }; extern struct __v86 __v86; /* V86 interface structure */ void __v86int(void); #define v86 __v86 #define v86int __v86int extern uint32_t __base; extern uint32_t __args; #define PTOV(pa) ((caddr_t)(pa) - __base) #define VTOP(va) ((vm_offset_t)(va) + __base) #define VTOPSEG(va) (uint16_t)(VTOP((caddr_t)va) >> 4) #define VTOPOFF(va) (uint16_t)(VTOP((caddr_t)va) & 0xf) #define V86_CY(x) ((x) & PSL_C) #define V86_ZR(x) ((x) & PSL_Z) void __exit(int) __attribute__((__noreturn__)); void __exec(caddr_t, ...); #endif /* !_BTXV86_H_ */ |