romread.S revision 1.1.2.2
1 1.1.2.2 nathanw /* $NetBSD: romread.S,v 1.1.2.2 2002/02/28 04:12:27 nathanw Exp $ */ 2 1.1.2.2 nathanw /* 3 1.1.2.2 nathanw * Copyright (c) 1995 Ludd, University of Lule}, Sweden. 4 1.1.2.2 nathanw * All rights reserved. 5 1.1.2.2 nathanw * 6 1.1.2.2 nathanw * This code is derived from software contributed to Ludd by 7 1.1.2.2 nathanw * Bertram Barth. 8 1.1.2.2 nathanw * 9 1.1.2.2 nathanw * Redistribution and use in source and binary forms, with or without 10 1.1.2.2 nathanw * modification, are permitted provided that the following conditions 11 1.1.2.2 nathanw * are met: 12 1.1.2.2 nathanw * 1. Redistributions of source code must retain the above copyright 13 1.1.2.2 nathanw * notice, this list of conditions and the following disclaimer. 14 1.1.2.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 15 1.1.2.2 nathanw * notice, this list of conditions and the following disclaimer in the 16 1.1.2.2 nathanw * documentation and/or other materials provided with the distribution. 17 1.1.2.2 nathanw * 3. All advertising materials mentioning features or use of this software 18 1.1.2.2 nathanw * must display the following acknowledgement: 19 1.1.2.2 nathanw * This product includes software developed at Ludd, University of 20 1.1.2.2 nathanw * Lule}, Sweden and its contributors. 21 1.1.2.2 nathanw * 4. The name of the author may not be used to endorse or promote products 22 1.1.2.2 nathanw * derived from this software without specific prior written permission 23 1.1.2.2 nathanw * 24 1.1.2.2 nathanw * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 25 1.1.2.2 nathanw * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 1.1.2.2 nathanw * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 1.1.2.2 nathanw * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 28 1.1.2.2 nathanw * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29 1.1.2.2 nathanw * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 1.1.2.2 nathanw * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 1.1.2.2 nathanw * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 1.1.2.2 nathanw * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 33 1.1.2.2 nathanw * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 1.1.2.2 nathanw */ 35 1.1.2.2 nathanw 36 1.1.2.2 nathanw /* All bugs are subject to removal without further notice */ 37 1.1.2.2 nathanw 38 1.1.2.2 nathanw 39 1.1.2.2 nathanw 40 1.1.2.2 nathanw #include "../include/asm.h" 41 1.1.2.2 nathanw 42 1.1.2.2 nathanw /* 43 1.1.2.2 nathanw * read750 (int block, int *regs) 44 1.1.2.2 nathanw */ 45 1.1.2.2 nathanw ENTRY(read750, 0xFFE) 46 1.1.2.2 nathanw movl 8(%ap), %r8 47 1.1.2.2 nathanw movl 4(%r8), %r1 48 1.1.2.2 nathanw movl 8(%r8), %r2 49 1.1.2.2 nathanw movl 12(%r8), %r3 50 1.1.2.2 nathanw movl 24(%r8), %r6 51 1.1.2.2 nathanw clrl %r5 52 1.1.2.2 nathanw movl 4(%ap), %r8 53 1.1.2.2 nathanw pushl $0 54 1.1.2.2 nathanw movl $0, 4(%sp) 55 1.1.2.2 nathanw movl %fp, 0xf0000 # ragge ??? 56 1.1.2.2 nathanw jsb (%r6) 57 1.1.2.2 nathanw movl 0xf0000, %fp 58 1.1.2.2 nathanw ret 59 1.1.2.2 nathanw 60 1.1.2.2 nathanw /* 61 1.1.2.2 nathanw * romread_uvax (int lbn, int size, void *buf, struct rpb *rpb) 62 1.1.2.2 nathanw */ 63 1.1.2.2 nathanw ENTRY(romread_uvax, 0xFFE) 64 1.1.2.2 nathanw movl 16(%ap),%r11 # restore boot-contents of %r11 (rpb) 65 1.1.2.2 nathanw movl 52(%r11), %r7 # load iovec/bqo into %r7 66 1.1.2.2 nathanw addl3 (%r7), %r7, %r6 # load qio into %r6 67 1.1.2.2 nathanw pushl %r11 # base of rpb 68 1.1.2.2 nathanw pushl $0 # virtual-flag 69 1.1.2.2 nathanw pushl $33 # read-logical-block 70 1.1.2.2 nathanw pushl 4(%ap) # lbn to start reading 71 1.1.2.2 nathanw pushl 8(%ap) # number of bytes to read 72 1.1.2.2 nathanw pushl 12(%ap) # buffer-address 73 1.1.2.2 nathanw calls $6, (%r6) # call the qio-routine 74 1.1.2.2 nathanw ret # %r0 holds the result 75 1.1.2.2 nathanw 76 1.1.2.2 nathanw /* 77 1.1.2.2 nathanw * romwrite_uvax (int lbn, int size, void *buf, struct rpb *rpb) 78 1.1.2.2 nathanw */ 79 1.1.2.2 nathanw ENTRY(romwrite_uvax, 0xFFE) 80 1.1.2.2 nathanw movl 16(%ap), %r11 # restore boot-contents of %r11 (rpb) 81 1.1.2.2 nathanw movl 52(%r11), %r7 # load iovec/bqo into %r7 82 1.1.2.2 nathanw addl3 (%r7), %r7, %r6 # load qio into %r6 83 1.1.2.2 nathanw pushl %r11 # base of rpb 84 1.1.2.2 nathanw pushl $0 # virtual-flag 85 1.1.2.2 nathanw pushl $32 # write-logical-block 86 1.1.2.2 nathanw pushl 4(%ap) # lbn to start reading 87 1.1.2.2 nathanw pushl 8(%ap) # number of bytes to read 88 1.1.2.2 nathanw pushl 12(%ap) # buffer-address 89 1.1.2.2 nathanw calls $6, (%r6) # call the qio-routine 90 1.1.2.2 nathanw ret # %r0 holds the result 91 1.1.2.2 nathanw 92
Indexes created Tue Oct 21 08:09:48 GMT 2025