1 /* $NetBSD: biosrw.s,v 1.2 2025/11/19 09:43:27 nia 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. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 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 /* int bios_read(buffer, offset, count, dev) */ 31 32 .globl _bios_read 33 .text 34 .even 35 36 _bios_read: 37 movml d1-d2/a1-a2,sp@- 38 movl sp@(24),sp@- | offset 39 movw sp@(38),sp@- | device 40 movw #-1,sp@- 41 movw sp@(38),sp@- | count 42 movl sp@(30),sp@- | buffer 43 movw #8,sp@- | read, physical mode 44 movw #4,sp@- 45 trap #13 | Rwabs() 46 lea sp@(18),sp 47 movml sp@+,d1-d2/a1-a2 48 rts 49 50 /* int bios_write(buffer, offset, count, dev) */ 51 52 .globl _bios_write 53 .text 54 .even 55 56 _bios_write: 57 movml d1-d2/a1-a2,sp@- 58 movl sp@(20),sp@- | offset 59 movw sp@(34),sp@- | device 60 movw #-1,sp@- 61 movw sp@(34),sp@- | count 62 movl sp@(26),sp@- | buffer 63 movw #9,sp@- | write, physical mode 64 movw #4,sp@- 65 trap #13 | Rwabs() 66 lea sp@(18),sp 67 movml sp@+,d1-d2/a1-a2 68 rts 69 70 /* int bios_critic(error) */ 71 72 .globl _bios_critic 73 .text 74 .even 75 76 _bios_critic: 77 movw sp@(4),d0 78 extl d0 79 rts 80
Indexes created Mon Feb 23 16:20:21 UTC 2026