xref: /netbsd/sys/arch/atari/stand/libsa/consio.S (revision bf9ec67e)
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
35ENTRY_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
45ENTRY_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
520:	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