/* $NetBSD: romread.S,v 1.2 2017/05/22 17:00:19 ragge 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. * * 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" /* * read750 (int block, int *regs) */ ENTRY(read750, 0xFFE) movl 8(%ap), %r8 movl 4(%r8), %r1 movl 8(%r8), %r2 movl 12(%r8), %r3 movl 24(%r8), %r6 clrl %r5 movl 4(%ap), %r8 pushl $0 movl $0, 4(%sp) movl %fp, 0xf0000 # ragge ??? jsb (%r6) movl 0xf0000, %fp ret /* * 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 |