/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* strncmp(s1, s2, n)
*
* Compare strings (at most n bytes): s1>s2: >0 s1==s2: 0 s1<s2: <0
*
* Fast assembler language version of the following C-program for strncmp
* which represents the `standard' for the C-library.
*
* int
* strncmp(const char *s1, const char *s2, size_t n)
* {
* n++;
* if (s1 == s2)
* return (0);
* while (--n != 0 && *s1 == *s2++)
* if (*s1++ == '\0')
* return (0);
* return ((n == 0) ? 0 : (*s1 - s2[-1]));
* }
*/
#include <sys/asm_linkage.h>
bnz 1b
b,a .doneq
.iss2:
2:
bgeu,a 3f
3:
be 1f
b,a .noteq
be,a 2b
!
!
bnz 1f
b,a .doneq
b,a .doneq
b,a .doneq
b,a .doneq
3:
bgeu,a 4f
4:
be 1f
b,a .noteq
be,a 3b
bnz 1f
b,a .doneq
b,a .doneq
b,a .doneq
b,a .doneq
.w2cmp:
4:
bgeu,a 5f
5:
be 1f
b,a .noteq
be,a 4b
bnz 1f
b,a .doneq
b,a .doneq
b,a .doneq
b,a .doneq
be 1f
b,a .noteq
be,a 5b
bnz 1f
b,a .doneq
b,a .doneq
b,a .doneq
bne 6f
bne 6f
bne 6f
.noteqb:
6: ret
1:
bnz 1b
b,a .doneq