60 lines
2.3 KiB
ArmAsm
60 lines
2.3 KiB
ArmAsm
/* $NetBSD: consio.S,v 1.1 2001/09/08 11:21:02 thomas Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1995 Waldi Ravens.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Waldi Ravens.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <machine/asm.h>
|
|
|
|
ENTRY_NOPROFILE(getchar) | int getchar (void);
|
|
movml %d2/%a2,%sp@-
|
|
movw #2,%sp@- | BIOS device 2 => console (VT52)
|
|
movw #2,%sp@- | BIOS opcode 2 => Bconin
|
|
trap #13 | => char in d0.b
|
|
addql #4,%sp
|
|
andl #0xff,%d0
|
|
movml %sp@+,%d2/%a2
|
|
rts
|
|
|
|
ENTRY_NOPROFILE(putchar) | void putchar (int c);
|
|
movl %sp@(4),%d0
|
|
cmpw #10,%d0 | linefeed?
|
|
bnes 0f
|
|
movq #13,%d0 | yes, put CR and LF.
|
|
bsrs 0f
|
|
movq #10,%d0
|
|
0: movml %d2/%a2,%sp@-
|
|
movw %d0,%sp@- | character
|
|
movw #2,%sp@- | BIOS device 2 => console (VT52)
|
|
movw #3,%sp@- | BIOS opcode 3 => Bconout
|
|
trap #13 | => none
|
|
addql #6,%sp
|
|
movml %sp@+,%d2/%a2
|
|
rts
|