mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-20 12:00:06 +00:00
86 lines
3.0 KiB
ArmAsm
86 lines
3.0 KiB
ArmAsm
|
/*-
|
||
|
|
* 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.
|
||
|
|
* 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)
|
||
|
|
.asciz "@(#)strsep.s 5.1 (Berkeley) 5/15/90"
|
||
|
|
#endif /* LIBC_SCCS and not lint */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Get next word from string *stringp, where words are
|
||
|
|
* strings separated by characters from delim.
|
||
|
|
*
|
||
|
|
* Writes NULs into the string at *stringp to end tokens.
|
||
|
|
* On return, *stringp points past the last NUL written (if there might
|
||
|
|
* be further tokens), or is NULL (if there are definitely no more tokens).
|
||
|
|
*
|
||
|
|
* If *stringp is NULL, strtoken returns NULL.
|
||
|
|
*
|
||
|
|
* char *
|
||
|
|
* strtoken(stringp, delim)
|
||
|
|
* register char **stringp;
|
||
|
|
* register char const *delim;
|
||
|
|
*/
|
||
|
|
#include "DEFS.h"
|
||
|
|
|
||
|
|
ENTRY(strsep, 0)
|
||
|
|
tstl *4(ap) /* if (*stringp == NULL) */
|
||
|
|
bneq 0f
|
||
|
|
clrl r0 # return (NULL);
|
||
|
|
ret
|
||
|
|
|
||
|
|
0:
|
||
|
|
subl2 $32,sp /* make room for 256 bit table */
|
||
|
|
movc5 $0,(sp),$0,$32,(sp)
|
||
|
|
movq 4(ap),r1 /* r1 = stringp, r2 = delim */
|
||
|
|
|
||
|
|
/* turn on bit for each character in s2, including '\0' */
|
||
|
|
1:
|
||
|
|
movzbl (r2)+,r0
|
||
|
|
bbss r0,(sp),1b
|
||
|
|
bneq 1b
|
||
|
|
|
||
|
|
movl (r1),r3 /* r3 = s = *stringp */
|
||
|
|
movl r3,r0 /* save return value */
|
||
|
|
|
||
|
|
/* scan for delimiters */
|
||
|
|
2:
|
||
|
|
movzbl (r3)+,r2 /* c = *s++ */
|
||
|
|
bbc r2,(sp),2b /* loop until c is in table */
|
||
|
|
beql 3f
|
||
|
|
clrb -1(r3) /* if c!='\0', s[-1] = 0 */
|
||
|
|
movl r3,(r1) /* and *stringp = s */
|
||
|
|
ret
|
||
|
|
3:
|
||
|
|
clrl (r1) /* else *stringp = NULL */
|
||
|
|
ret
|