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: ultoa.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 *ultoa (unsigned long val, char *s, int radix)	*/
37
38#define val_lo	r22
39#define str_lo	r20
40#define rdx_lo	r18
41#define rdx_hi	r19
42
43
44ENTRY	ultoa
45ENTRY	__ultoa
46
47    ; Check radix
48	cpi	rdx_lo, 37
49	cpc	rdx_hi, __zero_reg__
50	brsh	1f
51	cpi	rdx_lo, 2
52	brlo	1f
53	XJMP	_U(__ultoa_ncheck)
54
551:	X_movw	ZL, str_lo
56	st	Z, __zero_reg__
57	X_movw	r24, str_lo
58	ret
59
60ENDFUNC
61
62#endif	/* !__AVR_TINY__ */
63#endif	/* !__DOXYGEN__ */
64