1 /* $NetBSD: consio.S,v 1.1 2001/09/08 11:21:02 thomas 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 #include <machine/asm.h> 34 35 ENTRY_NOPROFILE(getchar) | int getchar (void); 36 movml %d2/%a2,%sp@- 37 movw #2,%sp@- | BIOS device 2 => console (VT52) 38 movw #2,%sp@- | BIOS opcode 2 => Bconin 39 trap #13 | => char in d0.b 40 addql #4,%sp 41 andl #0xff,%d0 42 movml %sp@+,%d2/%a2 43 rts 44 45 ENTRY_NOPROFILE(putchar) | void putchar (int c); 46 movl %sp@(4),%d0 47 cmpw #10,%d0 | linefeed? 48 bnes 0f 49 movq #13,%d0 | yes, put CR and LF. 50 bsrs 0f 51 movq #10,%d0 52 0: movml %d2/%a2,%sp@- 53 movw %d0,%sp@- | character 54 movw #2,%sp@- | BIOS device 2 => console (VT52) 55 movw #3,%sp@- | BIOS opcode 3 => Bconout 56 trap #13 | => none 57 addql #6,%sp 58 movml %sp@+,%d2/%a2 59 rts 60
Indexes created Mon Sep 29 21:09:56 GMT 2025