1/* $NetBSD: romread.S,v 1.2 2017/05/22 17:00:19 ragge Exp $ */ 2/* 3 * Copyright (c) 1995 Ludd, University of Lule}, Sweden. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Ludd by 7 * Bertram Barth. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 /* All bugs are subject to removal without further notice */ 31 32 33 34#include "../include/asm.h" 35 36/* 37 * read750 (int block, int *regs) 38 */ 39ENTRY(read750, 0xFFE) 40 movl 8(%ap), %r8 41 movl 4(%r8), %r1 42 movl 8(%r8), %r2 43 movl 12(%r8), %r3 44 movl 24(%r8), %r6 45 clrl %r5 46 movl 4(%ap), %r8 47 pushl $0 48 movl $0, 4(%sp) 49 movl %fp, 0xf0000 # ragge ??? 50 jsb (%r6) 51 movl 0xf0000, %fp 52 ret 53 54/* 55 * romread_uvax (int lbn, int size, void *buf, struct rpb *rpb) 56 */ 57ENTRY(romread_uvax, 0xFFE) 58 movl 16(%ap),%r11 # restore boot-contents of %r11 (rpb) 59 movl 52(%r11), %r7 # load iovec/bqo into %r7 60 addl3 (%r7), %r7, %r6 # load qio into %r6 61 pushl %r11 # base of rpb 62 pushl $0 # virtual-flag 63 pushl $33 # read-logical-block 64 pushl 4(%ap) # lbn to start reading 65 pushl 8(%ap) # number of bytes to read 66 pushl 12(%ap) # buffer-address 67 calls $6, (%r6) # call the qio-routine 68 ret # %r0 holds the result 69 70/* 71 * romwrite_uvax (int lbn, int size, void *buf, struct rpb *rpb) 72 */ 73ENTRY(romwrite_uvax, 0xFFE) 74 movl 16(%ap), %r11 # restore boot-contents of %r11 (rpb) 75 movl 52(%r11), %r7 # load iovec/bqo into %r7 76 addl3 (%r7), %r7, %r6 # load qio into %r6 77 pushl %r11 # base of rpb 78 pushl $0 # virtual-flag 79 pushl $32 # write-logical-block 80 pushl 4(%ap) # lbn to start reading 81 pushl 8(%ap) # number of bytes to read 82 pushl 12(%ap) # buffer-address 83 calls $6, (%r6) # call the qio-routine 84 ret # %r0 holds the result 85 86