1 /* $NetBSD: bioscall.h,v 1.7 2001/05/02 13:12:46 jdolecek 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef __I386_BIOSCALL_H__ 40 #define __I386_BIOSCALL_H__ 41 42 /* 43 * virtual & physical address of the trampoline 44 * that we use: page 1. 45 */ 46 #define BIOSTRAMP_BASE NBPG 47 48 #ifndef _LOCORE 49 #define BIOSREG_LO 0 50 #define BIOSREG_HI 1 51 52 typedef union { 53 u_char biosreg_quarter[4]; 54 u_short biosreg_half[2]; 55 u_int biosreg_long; 56 } bios_reg; 57 58 struct bioscallregs { 59 bios_reg r_ax; 60 bios_reg r_bx; 61 bios_reg r_cx; 62 bios_reg r_dx; 63 bios_reg r_si; 64 bios_reg r_di; 65 bios_reg r_flags; 66 bios_reg r_es; 67 }; 68 69 #define AL r_ax.biosreg_quarter[BIOSREG_LO] 70 #define AH r_ax.biosreg_quarter[BIOSREG_HI] 71 #define AX r_ax.biosreg_half[BIOSREG_LO] 72 #define AX_HI r_ax.biosreg_half[BIOSREG_HI] 73 #define EAX r_ax.biosreg_long 74 75 #define BL r_bx.biosreg_quarter[BIOSREG_LO] 76 #define BH r_bx.biosreg_quarter[BIOSREG_HI] 77 #define BX r_bx.biosreg_half[BIOSREG_LO] 78 #define BX_HI r_bx.biosreg_half[BIOSREG_HI] 79 #define EBX r_bx.biosreg_long 80 81 #define CL r_cx.biosreg_quarter[BIOSREG_LO] 82 #define CH r_cx.biosreg_quarter[BIOSREG_HI] 83 #define CX r_cx.biosreg_half[BIOSREG_LO] 84 #define CX_HI r_cx.biosreg_half[BIOSREG_HI] 85 #define ECX r_cx.biosreg_long 86 87 #define DL r_dx.biosreg_quarter[BIOSREG_LO] 88 #define DH r_dx.biosreg_quarter[BIOSREG_HI] 89 #define DX r_dx.biosreg_half[BIOSREG_LO] 90 #define DX_HI r_dx.biosreg_half[BIOSREG_HI] 91 #define EDX r_dx.biosreg_long 92 93 #define SI r_si.biosreg_half[BIOSREG_LO] 94 #define SI_HI r_si.biosreg_half[BIOSREG_HI] 95 #define ESI r_si.biosreg_long 96 97 #define DI r_di.biosreg_half[BIOSREG_LO] 98 #define DI_HI r_di.biosreg_half[BIOSREG_HI] 99 #define EDI r_di.biosreg_long 100 101 #define FLAGS r_flags.biosreg_half[BIOSREG_LO] 102 #define FLAGS_HI r_flags.biosreg_half[BIOSREG_HI] 103 #define EFLAGS r_flags.biosreg_long 104 105 #define ES r_es.biosreg_half[BIOSREG_LO] 106 107 void bioscall __P((int /* function*/ , struct bioscallregs * /* regs */)); 108 #endif 109 #endif /* __I386_BIOSCALL_H__ */ 110