1/* Copyright (c) 2012  Georg-Johann Lay
2   All rights reserved.
3
4   Redistribution and use in source and binary forms, with or without
5   modification, are permitted provided that the following conditions are met:
6
7   * Redistributions of source code must retain the above copyright
8     notice, this list of conditions and the following disclaimer.
9   * Redistributions in binary form must reproduce the above copyright
10     notice, this list of conditions and the following disclaimer in
11     the documentation and/or other materials provided with the
12     distribution.
13   * Neither the name of the copyright holders nor the names of
14     contributors may be used to endorse or promote products derived
15     from this software without specific prior written permission.
16
17  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27  POSSIBILITY OF SUCH DAMAGE. */
28
29/* $Id: itoa_ncheck.S 2420 2014-04-28 14:05:10Z pitchumani $	*/
30
31#if	!defined (__DOXYGEN__)
32#if	!defined (__AVR_TINY__)
33
34#include "asmdef.h"
35
36/* char *__itoa_ncheck (int val, char *s, unsigned char radix)	*/
37
38#define val_lo	r24
39#define val_hi	r25
40#define str_lo	r22
41#define radix	r20
42
43#define sign	r27	/* Argument for __utoa_common()	*/
44
45ENTRY	__itoa_ncheck
46
47	clr	sign
48	cpi	radix, 10
49	brne	1f
50	tst	val_hi
51	brpl	1f
52
53    ; radix == 10 && val < 0: sign = '-'
54	ldi	sign, '-'
55    ; val = -val to make val positive
56	com	val_hi
57	neg	val_lo
58	sbci	val_hi, -1
591:	XJMP	_U(__utoa_common)
60
61ENDFUNC
62
63#endif	/* !__AVR_TINY__ */
64#endif	/* !__DOXYGEN__ */
65