diff options
Diffstat (limited to 'sys/lib/libkern/arch/sparc/strlen.S')
| -rw-r--r-- | sys/lib/libkern/arch/sparc/strlen.S | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/sys/lib/libkern/arch/sparc/strlen.S b/sys/lib/libkern/arch/sparc/strlen.S new file mode 100644 index 00000000000..1a1a1dbcf49 --- /dev/null +++ b/sys/lib/libkern/arch/sparc/strlen.S @@ -0,0 +1,59 @@ +/* $NetBSD: strlen.S,v 1.2 1994/10/26 06:40:09 cgd Exp $ */ + +/* + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * This software was developed by the Computer Systems Engineering group + * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and + * contributed to Berkeley. + * + * 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. + * + * Header: strlen.s,v 1.1 92/06/25 12:52:47 torek Exp + */ + +#if defined(LIBC_SCCS) && !defined(lint) +#ifdef notdef + .asciz "@(#)strlen.s 8.1 (Berkeley) 6/4/93" +#endif + .asciz "$NetBSD: strlen.S,v 1.2 1994/10/26 06:40:09 cgd Exp $" +#endif /* LIBC_SCCS and not lint */ + +#include "DEFS.h" + +ENTRY(strlen) + add %o0, 1, %o1 ! save starting point + 1 +1: + ldsb [%o0], %o2 ! fetch byte + tst %o2 ! null? + bne 1b ! no, keep going + inc %o0 ! always increment pointer + retl + sub %o0, %o1, %o0 ! return length (ptr - (origptr+1)) |