Clean up bios_reg a little, and add support for accessing
the byte variants of the registers (e.g. %ah, %al, etc.).
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662fbfe2f1
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c0708e9ff1
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@ -1,10 +1,11 @@
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/* $NetBSD: bioscall.h,v 1.5 1998/10/03 02:14:52 jtk Exp $ */
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/* $NetBSD: bioscall.h,v 1.6 2000/07/12 22:58:12 thorpej Exp $ */
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/*-
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* Copyright (c) 1997, 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by John Kohl.
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* by John Kohl and Jason R. Thorpe.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __I386_BIOSCALL_H__
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#define __I386_BIOSCALL_H__
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#define BIOSTRAMP_BASE NBPG
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#ifndef _LOCORE
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typedef union bios_register {
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struct {
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u_short hw_lo;
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u_short hw_hi;
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} halfword;
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u_int longword;
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#define BIOSREG_LO 0
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#define BIOSREG_HI 1
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typedef union {
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u_char biosreg_quarter[4];
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u_short biosreg_half[2];
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u_int biosreg_long;
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} bios_reg;
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struct bioscallregs {
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@ -61,27 +64,42 @@ struct bioscallregs {
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bios_reg r_di;
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bios_reg r_flags;
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};
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#define AX r_ax.halfword.hw_lo
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#define AX_HI r_ax.halfword.hw_hi
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#define EAX r_ax.longword
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#define BX r_bx.halfword.hw_lo
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#define BX_HI r_bx.halfword.hw_hi
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#define EBX r_bx.longword
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#define CX r_cx.halfword.hw_lo
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#define CX_HI r_cx.halfword.hw_hi
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#define ECX r_cx.longword
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#define DX r_dx.halfword.hw_lo
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#define DX_HI r_dx.halfword.hw_hi
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#define EDX r_dx.longword
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#define SI r_si.halfword.hw_lo
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#define SI_HI r_si.halfword.hw_hi
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#define ESI r_si.longword
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#define DI r_di.halfword.hw_lo
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#define DI_HI r_di.halfword.hw_hi
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#define EDI r_di.longword
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#define FLAGS r_flags.halfword.hw_lo
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#define FLAGS_HI r_flags.halfword.hw_hi
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#define EFLAGS r_flags.longword
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#define AL r_ax.biosreg_quarter[BIOSREG_LO]
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#define AH r_ax.biosreg_quarter[BIOSREG_HI]
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#define AX r_ax.biosreg_half[BIOSREG_LO]
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#define AX_HI r_ax.biosreg_half[BIOSREG_HI]
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#define EAX r_ax.biosreg_long
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#define BL r_bx.biosreg_quarter[BIOSREG_LO]
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#define BH r_bx.biosreg_quarter[BIOSREG_HI]
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#define BX r_bx.biosreg_half[BIOSREG_LO]
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#define BX_HI r_bx.biosreg_half[BIOSREG_HI]
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#define EBX r_bx.biosreg_long
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#define CL r_cx.biosreg_quarter[BIOSREG_LO]
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#define CH r_cx.biosreg_quarter[BIOSREG_HI]
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#define CX r_cx.biosreg_half[BIOSREG_LO]
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#define CX_HI r_cx.biosreg_half[BIOSREG_HI]
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#define ECX r_cx.biosreg_long
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#define DL r_dx.biosreg_quarter[BIOSREG_LO]
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#define DH r_dx.biosreg_quarter[BIOSREG_HI]
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#define DX r_dx.biosreg_half[BIOSREG_LO]
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#define DX_HI r_dx.biosreg_half[BIOSREG_HI]
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#define EDX r_dx.biosreg_long
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#define SI r_si.biosreg_half[BIOSREG_LO]
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#define SI_HI r_si.biosreg_half[BIOSREG_HI]
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#define ESI r_si.biosreg_long
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#define DI r_di.biosreg_half[BIOSREG_LO]
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#define DI_HI r_di.biosreg_half[BIOSREG_HI]
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#define EDI r_di.biosreg_long
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#define FLAGS r_flags.biosreg_half[BIOSREG_LO]
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#define FLAGS_HI r_flags.biosreg_half[BIOSREG_HI]
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#define EFLAGS r_flags.biosreg_long
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void bioscall __P((int /* function*/ , struct bioscallregs * /* regs */));
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#endif
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