4.3BSD - /usr/src/lib/libc/vax/gen/strlen.s

   1: /*
   2:  * Copyright (c) 1983 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  */
   6: 
   7: #ifdef LIBC_SCCS
   8:         .asciz  "@(#)strlen.s	5.3 (Berkeley) 3/9/86"
   9: #endif LIBC_SCCS
  10: 
  11: /*
  12:  * Return the length of cp (not counting '\0').
  13:  *
  14:  * strlen(cp)
  15:  *	char *cp;
  16:  */
  17: #include "DEFS.h"
  18: 
  19: ENTRY(strlen, 0)
  20:         movl    4(ap),r1
  21: 1:
  22:         locc    $0,$65535,(r1)  # look for '\0'
  23:         beql    1b
  24:         subl3   4(ap),r1,r0     # len = cp - base
  25:         ret

Defined functions