1 /* $NetBSD: biosrw.s,v 1.1 2002/02/24 20:51:07 leo Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Waldi Ravens. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Waldi Ravens. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* int bios_read(buffer, offset, count, dev) */ 34 35 .globl _bios_read 36 .text 37 .even 38 39 _bios_read: 40 movml d1-d2/a1-a2,sp@- 41 movl sp@(24),sp@- | offset 42 movw sp@(38),sp@- | device 43 movw #-1,sp@- 44 movw sp@(38),sp@- | count 45 movl sp@(30),sp@- | buffer 46 movw #8,sp@- | read, physical mode 47 movw #4,sp@- 48 trap #13 | Rwabs() 49 lea sp@(18),sp 50 movml sp@+,d1-d2/a1-a2 51 rts 52 53 /* int bios_write(buffer, offset, count, dev) */ 54 55 .globl _bios_write 56 .text 57 .even 58 59 _bios_write: 60 movml d1-d2/a1-a2,sp@- 61 movl sp@(20),sp@- | offset 62 movw sp@(34),sp@- | device 63 movw #-1,sp@- 64 movw sp@(34),sp@- | count 65 movl sp@(26),sp@- | buffer 66 movw #9,sp@- | write, physical mode 67 movw #4,sp@- 68 trap #13 | Rwabs() 69 lea sp@(18),sp 70 movml sp@+,d1-d2/a1-a2 71 rts 72 73 /* int bios_critic(error) */ 74 75 .globl _bios_critic 76 .text 77 .even 78 79 _bios_critic: 80 movw sp@(4),d0 81 extl d0 82 rts 83
Indexes created Sun Sep 21 19:09:51 GMT 2025