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/* $OpenBSD: romread.S,v 1.2 2011/07/06 18:32:59 miod Exp $ */
/* $NetBSD: romread.S,v 1.1 2002/02/24 01:04:25 matt Exp $ */
/*
* Copyright (c) 1995 Ludd, University of Lule}, Sweden.
* All rights reserved.
*
* This code is derived from software contributed to Ludd by
* Bertram Barth.
*
* 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 at Ludd, University of
* Lule}, Sweden and its contributors.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
*/
/* All bugs are subject to removal without further notice */
#include "../include/asm.h"
/*
* romread_uvax (int lbn, int size, void *buf, struct rpb *rpb)
*/
ENTRY(romread_uvax, 0xFFE)
movl 16(ap),r11 # restore boot-contents of %r11 (rpb)
movl 52(r11), r7 # load iovec/bqo into %r7
addl3 (r7), r7, r6 # load qio into %r6
pushl r11 # base of rpb
pushl $0 # virtual-flag
pushl $33 # read-logical-block
pushl 4(ap) # lbn to start reading
pushl 8(ap) # number of bytes to read
pushl 12(ap) # buffer-address
calls $6, (r6) # call the qio-routine
ret # %r0 holds the result
/*
* romwrite_uvax (int lbn, int size, void *buf, struct rpb *rpb)
*/
ENTRY(romwrite_uvax, 0xFFE)
movl 16(ap), r11 # restore boot-contents of %r11 (rpb)
movl 52(r11), r7 # load iovec/bqo into %r7
addl3 (r7), r7, r6 # load qio into %r6
pushl r11 # base of rpb
pushl $0 # virtual-flag
pushl $32 # write-logical-block
pushl 4(ap) # lbn to start reading
pushl 8(ap) # number of bytes to read
pushl 12(ap) # buffer-address
calls $6, (r6) # call the qio-routine
ret # %r0 holds the result
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