prom_putchar.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/promimpl.h>
#include <sys/bootsvcs.h>
/*ARGSUSED*/
int
prom_mayput(char c)
{
prom_putchar(c);
return (1);
}
void
prom_putchar(char c)
{
static int bhcharpos = 0;
ow = promif_preout();
switch (c) {
case '\t':
do {
} while (++bhcharpos % 8);
break;
case '\n':
case '\r':
bhcharpos = 0;
BSVC_PUTCHAR(SYSP, c);
break;
case '\b':
if (bhcharpos)
bhcharpos--;
BSVC_PUTCHAR(SYSP, c);
break;
default:
bhcharpos++;
BSVC_PUTCHAR(SYSP, c);
break;
}
}
void
prom_writestr(const char *s, size_t n)
{
while (n-- != 0)
prom_putchar(*s++);
}