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Diffstat (limited to 'sysdeps/vax/strsep.s')
| -rw-r--r-- | sysdeps/vax/strsep.s | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/sysdeps/vax/strsep.s b/sysdeps/vax/strsep.s new file mode 100644 index 0000000000..9751acc699 --- /dev/null +++ b/sysdeps/vax/strsep.s @@ -0,0 +1,85 @@ +/*- + * 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 |