83 lines
2.5 KiB
ArmAsm
83 lines
2.5 KiB
ArmAsm
/* $NetBSD: biosrw.s,v 1.1 2002/02/24 20:51:07 leo Exp $ */
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/*
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* Copyright (c) 1995 Waldi Ravens.
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* All rights reserved.
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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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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Waldi Ravens.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* int bios_read(buffer, offset, count, dev) */
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.globl _bios_read
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.text
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.even
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_bios_read:
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movml d1-d2/a1-a2,sp@-
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movl sp@(24),sp@- | offset
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movw sp@(38),sp@- | device
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movw #-1,sp@-
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movw sp@(38),sp@- | count
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movl sp@(30),sp@- | buffer
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movw #8,sp@- | read, physical mode
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movw #4,sp@-
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trap #13 | Rwabs()
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lea sp@(18),sp
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movml sp@+,d1-d2/a1-a2
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rts
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/* int bios_write(buffer, offset, count, dev) */
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.globl _bios_write
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.text
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.even
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_bios_write:
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movml d1-d2/a1-a2,sp@-
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movl sp@(20),sp@- | offset
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movw sp@(34),sp@- | device
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movw #-1,sp@-
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movw sp@(34),sp@- | count
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movl sp@(26),sp@- | buffer
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movw #9,sp@- | write, physical mode
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movw #4,sp@-
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trap #13 | Rwabs()
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lea sp@(18),sp
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movml sp@+,d1-d2/a1-a2
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rts
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/* int bios_critic(error) */
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.globl _bios_critic
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.text
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.even
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_bios_critic:
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movw sp@(4),d0
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extl d0
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rts
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