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/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* 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.
* 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)
.asciz "@(#)strspn.s 5.1 (Berkeley) 5/15/90"
#endif /* LIBC_SCCS and not lint */
/*
* Span the string s2 (skip characters that are in s2).
* Return the number of characters in s1 that were skipped.
*
* size_t
* strspn(s1, s2)
* const char *s1, *s2;
*/
#include "DEFS.h"
ENTRY(strspn, 0)
subl2 $32,sp /* make 256 bit table */
movc5 $0,(sp),$0,$32,(sp)
movq 4(ap),r1 /* r1 = s1, r2 = s2 */
/* turn on bit for each character in s2, including '\0' */
1:
movzbl (r2)+,r0
bbss r0,(sp),1b
bneq 1b
/* now clear bit for '\0' */
/* (this is easier than avoiding setting it in the first place) */
bicb2 $1,(sp) /* stop at '\0' */
movl r1,r0 /* r0 = s (current pos in s1) */
/* look for a character that is not in s2 */
2:
movzbl (r0)+,r2 /* c = *s++ */
bbs r2,(sp),2b /* loop while c is in table */
decl r0 /* s-- */
subl2 r1,r0 /* r0 = s - s1 = count */
ret
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