summary refs log tree commit diff
path: root/sysdeps/s390/s390-32/strcmp.S
blob: 109de12debac3d4c8623a68ef8e3943f5db35eb6 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
/* strcmp - compare two string.  S/390 version.
   This file is part of the GNU C Library.
   Copyright (C) 2001-2015 Free Software Foundation, Inc.
   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

/* INPUT PARAMETERS
     %r2 = address of string 1
     %r3 = address of string 2.  */

#include "sysdep.h"
#include "asm-syntax.h"

	.text
ENTRY(strcmp)
        slr   %r0,%r0
0:	clst  %r2,%r3
	jo    0b
	jp    1f
	jm    2f
	slr   %r2,%r2
	br    %r14
1:	lhi   %r2,1
	br    %r14
2:	lhi   %r2,-1
	br    %r14
END(strcmp)
libc_hidden_builtin_def (strcmp)