79 lines
2.5 KiB
ArmAsm
79 lines
2.5 KiB
ArmAsm
/* $NetBSD: fiq.S,v 1.1 1996/01/31 23:15:55 mark Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1994 Mark Brinicombe.
|
|
* Copyright (c) 1994 Brini.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software written for Brini by Mark Brinicombe
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions 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 Brini.
|
|
* 4. The name of the company nor the name of the author may be used to
|
|
* endorse or promote products derived from this software without specific
|
|
* prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI OR CONTRIBUTORS 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.
|
|
*
|
|
* RiscBSD kernel project
|
|
*
|
|
* fiq.S
|
|
*
|
|
* Low level fiq handlers
|
|
*
|
|
* Created : 27/09/94
|
|
* Last updated : 28/11/94
|
|
*
|
|
* $Id: fiq.S,v 1.1 1996/01/31 23:15:55 mark Exp $
|
|
*/
|
|
|
|
#include <machine/cpu.h>
|
|
|
|
sp .req r13
|
|
lr .req r14
|
|
pc .req r15
|
|
|
|
.text
|
|
|
|
.global _floppy_read_fiq
|
|
.global _floppy_read_fiq_end
|
|
|
|
_floppy_read_fiq:
|
|
subs r11, r11, #0x00000001
|
|
addeq r13, r13, #0x00018000
|
|
ldrb r10, [r13]
|
|
strb r10, [r12], #0x0001
|
|
subs pc, lr, #0x00000004
|
|
_floppy_read_fiq_end:
|
|
|
|
.global _floppy_write_fiq
|
|
.global _floppy_write_fiq_end
|
|
|
|
_floppy_write_fiq:
|
|
subs r11, r11, #0x00000001
|
|
addeq r13, r13, #0x00018000
|
|
ldrb r10, [r12], #0x0001
|
|
strb r10, [r13]
|
|
subs pc, lr, #0x00000004
|
|
|
|
_floppy_write_fiq_end:
|