1/* strcmp - compare two string.  64 bit S/390 version.
2   This file is part of the GNU C Library.
3   Copyright (C) 2001-2022 Free Software Foundation, Inc.
4
5   The GNU C Library is free software; you can redistribute it and/or
6   modify it under the terms of the GNU Lesser General Public
7   License as published by the Free Software Foundation; either
8   version 2.1 of the License, or (at your option) any later version.
9
10   The GNU C Library is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   Lesser General Public License for more details.
14
15   You should have received a copy of the GNU Lesser General Public
16   License along with the GNU C Library; if not, see
17   <https://www.gnu.org/licenses/>.  */
18
19/* INPUT PARAMETERS
20     %r2 = address of string 1
21     %r3 = address of string 2.  */
22
23#include <ifunc-strcmp.h>
24#include "sysdep.h"
25#include "asm-syntax.h"
26
27#if HAVE_STRCMP_Z900_G5
28# if defined __s390x__
29#  define SLGR	slgr
30#  define LGHI	lghi
31# else
32#  define SLGR	slr
33#  define LGHI	lhi
34# endif /* ! defined __s390x__  */
35
36	.text
37ENTRY(STRCMP_Z900_G5)
38	SLGR   %r0,%r0
390:	clst  %r2,%r3
40	jo    0b
41	jp    1f
42	jm    2f
43	SLGR  %r2,%r2
44	br    %r14
451:	LGHI  %r2,1
46	br    %r14
472:	LGHI  %r2,-1
48	br    %r14
49END(STRCMP_Z900_G5)
50
51# if ! HAVE_STRCMP_IFUNC
52strong_alias (STRCMP_Z900_G5, strcmp)
53# endif
54
55# if defined SHARED && IS_IN (libc)
56strong_alias (STRCMP_Z900_G5, __GI_strcmp)
57# endif
58#endif
59