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 45 typedef union { 46 u_char biosreg_quarter[4]; 47 u_short biosreg_half[2]; 48 u_int biosreg_long; 49 } bios_reg; 50 51 struct 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] 99 100 void bioscall(int /* function*/ , struct bioscallregs * /* regs */); 101 #endif 102 #endif /* __I386_BIOSCALL_H__ */ 103