92 lines
3.3 KiB
ArmAsm
92 lines
3.3 KiB
ArmAsm
/* $NetBSD: romread.S,v 1.1 2002/02/24 01:04:25 matt Exp $ */
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/*
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* Copyright (c) 1995 Ludd, University of Lule}, Sweden.
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* All rights reserved.
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*
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* This code is derived from software contributed to Ludd by
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* Bertram Barth.
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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 at Ludd, University of
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* Lule}, Sweden and its contributors.
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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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/* All bugs are subject to removal without further notice */
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#include "../include/asm.h"
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/*
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* read750 (int block, int *regs)
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*/
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ENTRY(read750, 0xFFE)
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movl 8(%ap), %r8
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movl 4(%r8), %r1
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movl 8(%r8), %r2
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movl 12(%r8), %r3
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movl 24(%r8), %r6
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clrl %r5
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movl 4(%ap), %r8
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pushl $0
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movl $0, 4(%sp)
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movl %fp, 0xf0000 # ragge ???
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jsb (%r6)
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movl 0xf0000, %fp
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ret
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/*
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* romread_uvax (int lbn, int size, void *buf, struct rpb *rpb)
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*/
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ENTRY(romread_uvax, 0xFFE)
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movl 16(%ap),%r11 # restore boot-contents of %r11 (rpb)
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movl 52(%r11), %r7 # load iovec/bqo into %r7
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addl3 (%r7), %r7, %r6 # load qio into %r6
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pushl %r11 # base of rpb
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pushl $0 # virtual-flag
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pushl $33 # read-logical-block
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pushl 4(%ap) # lbn to start reading
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pushl 8(%ap) # number of bytes to read
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pushl 12(%ap) # buffer-address
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calls $6, (%r6) # call the qio-routine
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ret # %r0 holds the result
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/*
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* romwrite_uvax (int lbn, int size, void *buf, struct rpb *rpb)
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*/
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ENTRY(romwrite_uvax, 0xFFE)
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movl 16(%ap), %r11 # restore boot-contents of %r11 (rpb)
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movl 52(%r11), %r7 # load iovec/bqo into %r7
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addl3 (%r7), %r7, %r6 # load qio into %r6
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pushl %r11 # base of rpb
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pushl $0 # virtual-flag
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pushl $32 # write-logical-block
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pushl 4(%ap) # lbn to start reading
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pushl 8(%ap) # number of bytes to read
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pushl 12(%ap) # buffer-address
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calls $6, (%r6) # call the qio-routine
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ret # %r0 holds the result
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