master
1/* $NetBSD: bioscall.h,v 1.11 2008/04/28 20:23:24 martin Exp $ */
2
3/*-
4 * Copyright (c) 1997, 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by John Kohl and Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef __I386_BIOSCALL_H__
33#define __I386_BIOSCALL_H__
34
35/*
36 * virtual & physical address of the trampoline
37 * that we use: page 1.
38 */
39#define BIOSTRAMP_BASE PAGE_SIZE
40
41#ifndef _LOCORE
42#define BIOSREG_LO 0
43#define BIOSREG_HI 1
44
45typedef union {
46 u_char biosreg_quarter[4];
47 u_short biosreg_half[2];
48 u_int biosreg_long;
49} bios_reg;
50
51struct bioscallregs {
52 bios_reg r_ax;
53 bios_reg r_bx;
54 bios_reg r_cx;
55 bios_reg r_dx;
56 bios_reg r_si;
57 bios_reg r_di;
58 bios_reg r_flags;
59 bios_reg r_es;
60};
61
62#define AL r_ax.biosreg_quarter[BIOSREG_LO]
63#define AH r_ax.biosreg_quarter[BIOSREG_HI]
64#define AX r_ax.biosreg_half[BIOSREG_LO]
65#define AX_HI r_ax.biosreg_half[BIOSREG_HI]
66#define EAX r_ax.biosreg_long
67
68#define BL r_bx.biosreg_quarter[BIOSREG_LO]
69#define BH r_bx.biosreg_quarter[BIOSREG_HI]
70#define BX r_bx.biosreg_half[BIOSREG_LO]
71#define BX_HI r_bx.biosreg_half[BIOSREG_HI]
72#define EBX r_bx.biosreg_long
73
74#define CL r_cx.biosreg_quarter[BIOSREG_LO]
75#define CH r_cx.biosreg_quarter[BIOSREG_HI]
76#define CX r_cx.biosreg_half[BIOSREG_LO]
77#define CX_HI r_cx.biosreg_half[BIOSREG_HI]
78#define ECX r_cx.biosreg_long
79
80#define DL r_dx.biosreg_quarter[BIOSREG_LO]
81#define DH r_dx.biosreg_quarter[BIOSREG_HI]
82#define DX r_dx.biosreg_half[BIOSREG_LO]
83#define DX_HI r_dx.biosreg_half[BIOSREG_HI]
84#define EDX r_dx.biosreg_long
85
86#define SI r_si.biosreg_half[BIOSREG_LO]
87#define SI_HI r_si.biosreg_half[BIOSREG_HI]
88#define ESI r_si.biosreg_long
89
90#define DI r_di.biosreg_half[BIOSREG_LO]
91#define DI_HI r_di.biosreg_half[BIOSREG_HI]
92#define EDI r_di.biosreg_long
93
94#define FLAGS r_flags.biosreg_half[BIOSREG_LO]
95#define FLAGS_HI r_flags.biosreg_half[BIOSREG_HI]
96#define EFLAGS r_flags.biosreg_long
97
98#define ES r_es.biosreg_half[BIOSREG_LO]
99
100void bioscall(int /* function*/ , struct bioscallregs * /* regs */);
101#endif
102#endif /* __I386_BIOSCALL_H__ */