/*      $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