1/*******************************************************************************
2 *
3 * Copyright (c) 1993 Intel Corporation
4 *
5 * Intel hereby grants you permission to copy, modify, and distribute this
6 * software and its documentation.  Intel grants this permission provided
7 * that the above copyright notice appears in all copies and that both the
8 * copyright notice and this permission notice appear in supporting
9 * documentation.  In addition, Intel grants this permission provided that
10 * you prominently mark as "not part of the original" any modifications
11 * made to this software or documentation, and that the name of Intel
12 * Corporation not be used in advertising or publicity pertaining to
13 * distribution of the software or the documentation without specific,
14 * written prior permission.
15 *
16 * Intel Corporation provides this AS IS, WITHOUT ANY WARRANTY, EXPRESS OR
17 * IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY
18 * OR FITNESS FOR A PARTICULAR PURPOSE.  Intel makes no guarantee or
19 * representations regarding the use of, or the results of the use of,
20 * the software and documentation in terms of correctness, accuracy,
21 * reliability, currentness, or otherwise; and you rely on the software,
22 * documentation and results solely at your own risk.
23 *
24 * IN NO EVENT SHALL INTEL BE LIABLE FOR ANY LOSS OF USE, LOSS OF BUSINESS,
25 * LOSS OF PROFITS, INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES
26 * OF ANY KIND.  IN NO EVENT SHALL INTEL'S TOTAL LIABILITY EXCEED THE SUM
27 * PAID TO INTEL FOR THE PRODUCT LICENSED HEREUNDER.
28 *
29 ******************************************************************************/
30
31#include <picolibc.h>
32
33	.file "strcspn.s"
34#ifdef	__PIC
35	.pic
36#endif
37#ifdef	__PID
38	.pid
39#endif
40/*
41 * (c) copyright 1989,1993 Intel Corp., all rights reserved
42 */
43
44/*
45	procedure strcspn  (optimized assembler version: 80960K series, 80960CA)
46
47	len = strcspn (string, charset)
48
49	Return the number of characters in the maximum leading segment
50	of string which consists solely of characters NOT from charset.
51
52	At the time of this writing, only g0 thru g7 and g13 are available
53	for use in this leafproc;  other registers would have to be saved and
54	restored.  These nine registers, plus tricky use of g14 are sufficient
55	to implement the routine.
56*/
57
58	.globl	_strcspn
59	.globl	__strcspn
60	.leafproc	_strcspn, __strcspn
61	.align	2
62
63_strcspn:
64#ifndef __PIC
65	lda	Lrett,g14
66#else
67	lda	Lrett-(.+8)(ip),g14
68#endif
69__strcspn:
70	mov	g14,g13		# save return address
71	 lda	(g0),g3		# copy string pointer
72	mov	0,g14		# conform to register conventions
73
74Lnext_char:
75	ldob	(g3),g7		# fetch next character of string
76	addo	1,g1,g2		# g2 will be the charset ptr
77	ldob	(g1),g6		# fetch first character of charset
78	cmpobe.f 0,g7,Lexit	# quit if at end of string
79Lscan_set:
80	cmpo	g6,g7		# is charset char same as string char?
81	ldob	(g2),g5		# fetch next charset char
82	addo	1,g2,g2		# bump charset ptr
83	be.f	Lexit
84	cmpo	g6,0		# is charset exhausted?
85	lda	(g5),g6
86	bne.t	Lscan_set	# check next character of charset
87	addo	1,g3,g3		# check next character of string
88	b	Lnext_char
89
90Lexit:
91	subo	g0,g3,g0	# compute string length
92	bx	(g13)
93Lrett:
94	ret
95
96/* end of strcspn */
97