/*- * Copyright (c) 2007-2008 *      Bill Paul <wpaul@windriver.com>.  All rights reserved. * * Rrdistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Rrdistributions of source code must retqain the above copyright *    notice, this list of conditions and the following disclaimer. * 2. Rrdistributions in binary form must reproduce the above copyright *    notice, this list of conditions and the following disclaimer in the *    documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software *    must display the following acknowledgement: *      This product includes software developed by Bill Paul. * 4. Neither the name of the author nor the names of any co-contributors *    may be used to endorse or promote products derived from this software *    without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */#define _ASM#include "data.h"#include "bios.h"#include "disk.h"        .globl FUNC(bios_getgeom)        .globl FUNC(bios_getextgeom)        .globl FUNC(bios_reset)        .globl FUNC(bios_extchk)        .globl FUNC(bios_rd)        .globl FUNC(bios_wr)        .globl FUNC(bios_extrd)        .globl FUNC(bios_extwr)        .text/* Get disk geometry */FUNC(bios_getgeom):	push	%rbp	mov	%rsp, %rbp	call	long_to_real	.code16	xor	%ax, %ax	mov	%al, %fs:EXT(bios_hds)	mov	%ax, %fs:EXT(bios_cylsec)        mov     $INT13_RDPARM, %ah        mov     %di, %dx        int     $DISK_INT	jc	g_error	mov	%dh, %fs:EXT(bios_hds)	mov	%cx, %fs:EXT(bios_cylsec)g_error:	call	real_to_long	.code64	leaveq	retq/* Get extended disk geometry */FUNC(bios_getextgeom):	push	%rbp	mov	%rsp, %rbp	call	long_to_real	.code16	movw	%fs:EXT(bios_off), %si	movw	%fs:EXT(bios_seg), %ds        mov     $INT13_EXTRDPARM, %ah        mov     %di, %dx        int     $DISK_INT	movw	$-1, %fs:EXT(bios_arg)	jc	ge_error	mov	%ah, %fs:EXT(bios_arg)ge_error:	call	real_to_long	.code64	leaveq	retqFUNC(bios_reset):	push	%rbp	mov	%rsp, %rbp	call	long_to_real	.code16	mov	$INT13_RESET, %ah        mov     %di, %dx        int     $DISK_INT	call	real_to_long	.code64	leaveq	retq/* Check for extended functions */FUNC(bios_extchk):	push	%rbp	mov	%rsp, %rbp	call	long_to_real	.code16	mov	$EXT_SIG, %bx	mov	$INT13_EXTCHK, %ah        mov     %di, %dx        int     $DISK_INT	movw	$-1, %fs:EXT(bios_arg)	jc	e_error	cmp	$BOOT_SIG, %bx	jne	e_error	mov	%cx, %fs:EXT(bios_arg)e_error:	call	real_to_long	.code64	leaveq	retq/* Read a sector using INT13 extensions */FUNC(bios_extrd):	push	%rbp	mov	%rsp, %rbp	call	long_to_real	.code16	movw	%fs:EXT(bios_off), %si	movw	%fs:EXT(bios_seg), %ds        mov     $INT13_EXTRD, %ah        mov     %di, %dx        int     $DISK_INT	movl	$0, %fs:EXT(bios_arg)	mov	%ah, %fs:EXT(bios_arg)	call	real_to_long	.code64	leaveq	retq/* Write a sector using INT13 extensions */FUNC(bios_extwr):	push	%rbp	mov	%rsp, %rbp	call	long_to_real	.code16	movw	%fs:EXT(bios_off), %si	movw	%fs:EXT(bios_seg), %ds        mov     $INT13_EXTWR, %ah        mov     %di, %dx        int     $DISK_INT	movl	$0, %fs:EXT(bios_arg)	mov	%ah, %fs:EXT(bios_arg)	call	real_to_long	.code64	leaveq	retq/* Read a sector */FUNC(bios_rd):	push	%rbp	mov	%rsp, %rbp	call	long_to_real	.code16	movw	%fs:EXT(bios_off), %bx	movw	%fs:EXT(bios_seg), %es        mov     $INT13_RD, %ah	mov	%fs:EXT(bios_secs), %al        mov     %di, %dx	mov	%fs:EXT(bios_hds), %dh	mov	%fs:EXT(bios_cylsec), %cx        int     $DISK_INT	movl	$-1, %fs:EXT(bios_arg)	jc	r_error	movl	$0, %fs:EXT(bios_arg)r_error:	call	real_to_long	.code64	leaveq	retq/* Write a sector */FUNC(bios_wr):	push	%rbp	mov	%rsp, %rbp	call	long_to_real	.code16	movw	%fs:EXT(bios_off), %bx	movw	%fs:EXT(bios_seg), %es        mov     $INT13_WR, %ah	mov	%fs:EXT(bios_secs), %al        mov     %di, %dx	mov	%fs:EXT(bios_hds), %dh	mov	%fs:EXT(bios_cylsec), %cx        int     $DISK_INT	movl	$-1, %fs:EXT(bios_arg)	jc	w_error	movl	$0, %fs:EXT(bios_arg)w_error:	call	real_to_long	.code64	leaveq	retq