/*      $NetBSD: snprintf.c,v 1.4 1995/02/02 02:10:35 jtc Exp $ */

/*-
 * Copyright (c) 1990, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Chris Torek.
 *
 * 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 the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
 */

#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char sccsid[] = "@(#)snprintf.c  8.1 (Berkeley) 6/4/93";
#endif
static char rcsid[] = "$NetBSD: snprintf.c,v 1.4 1995/02/02 02:10:35 jtc Exp $";
#endif /* LIBC_SCCS and not lint */

#define _KERNEL
#include "ixemul.h"
#include "my_varargs.h"

#include <stdio.h>

#ifdef NATIVE_MORPHOS
#define vfprintf my_vfprintf
int vfprintf(FILE *fp, const char *fmt0, my_va_list ap);
#endif

int
snprintf(char *str, size_t n, char const *fmt, ...)
{
	int ret;
	my_va_list ap;
	FILE f;

	my_va_start(ap, fmt);
	f._flags = __SWR | __SSTR;
	/* To be compatible with glibc, we need to handle the special case where n is 0. */
	if ((int)n < 1)
	{
		f._bf._base = f._p = (void *)-1;
		f._bf._size = f._w = 0;
	}
	else
	{
		f._bf._base = f._p = (unsigned char *)str;
		f._bf._size = f._w = n - 1;
	}
	ret = vfprintf(&f, fmt, ap);
	if (f._p != (void *)-1)
	{
		*f._p = 0;
	}
	my_va_end(ap);
	return (ret);
}

#ifdef NATIVE_MORPHOS

int
_varargs68k_snprintf(char *str, size_t n, const char *fmt, char *ap1)
{
	int ret;
	my_va_list ap;
	FILE f;

	my_va_init_68k(ap, ap1);
	f._flags = __SWR | __SSTR;
	/* To be compatible with glibc, we need to handle the special case where n is 0. */
	if ((int)n < 1)
	{
		f._bf._base = f._p = (void *)-1;
		f._bf._size = f._w = 0;
		dprintf("null varargs68k_snprintf fp 0x%lx\n", &f);
	}
	else
	{
		f._bf._base = f._p = (unsigned char *)str;
		f._bf._size = f._w = n - 1;
	}
	ret = vfprintf(&f, fmt, ap);
	if (f._p != (void *)-1)
	{
		*f._p = 0;
	}
	return (ret);
}

asm("	.section \".text\"
	.type	_stk_snprintf,@function
	.globl	_stk_snprintf
_stk_snprintf:
	andi.	11,1,15
	mr	12,1
	bne-	.align_snprintf
	b	snprintf
.align_snprintf:
	addi	11,11,128
	mflr	0
	neg	11,11
	stw	0,4(1)
	stwux	1,1,11

	stw	6,20(1)
	stw	7,24(1)
	stw	8,28(1)
	stw	9,32(1)
	stw	10,36(1)
	bc	4,6,.nofloat_snprintf
	stfd	1,40(1)
	stfd	2,48(1)
	stfd	3,56(1)
	stfd	4,64(1)
	stfd	5,72(1)
	stfd	6,80(1)
	stfd	7,88(1)
	stfd	8,96(1)
.nofloat_snprintf:

	addi	6,1,104
	lis	0,0x300
	addi	12,12,8
	addi	11,1,8
	stw	0,0(6)
	stw	12,4(6)
	stw	11,8(6)
	bl	vsnprintf
	lwz	1,0(1)
	lwz	0,4(1)
	mtlr	0
	blr
");
#endif