diff options
Diffstat (limited to 'sysdeps/s390/strcmp-z900.S')
| -rw-r--r-- | sysdeps/s390/strcmp-z900.S | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/sysdeps/s390/strcmp-z900.S b/sysdeps/s390/strcmp-z900.S new file mode 100644 index 0000000000..bc3a589602 --- /dev/null +++ b/sysdeps/s390/strcmp-z900.S @@ -0,0 +1,59 @@ +/* strcmp - compare two string. 64 bit S/390 version. + This file is part of the GNU C Library. + Copyright (C) 2001-2019 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 + <https://www.gnu.org/licenses/>. */ + +/* INPUT PARAMETERS + %r2 = address of string 1 + %r3 = address of string 2. */ + +#include <ifunc-strcmp.h> +#include "sysdep.h" +#include "asm-syntax.h" + +#if HAVE_STRCMP_Z900_G5 +# if defined __s390x__ +# define SLGR slgr +# define LGHI lghi +# else +# define SLGR slr +# define LGHI lhi +# endif /* ! defined __s390x__ */ + + .text +ENTRY(STRCMP_Z900_G5) + SLGR %r0,%r0 +0: clst %r2,%r3 + jo 0b + jp 1f + jm 2f + SLGR %r2,%r2 + br %r14 +1: LGHI %r2,1 + br %r14 +2: LGHI %r2,-1 + br %r14 +END(STRCMP_Z900_G5) + +# if ! HAVE_STRCMP_IFUNC +strong_alias (STRCMP_Z900_G5, strcmp) +# endif + +# if defined SHARED && IS_IN (libc) +strong_alias (STRCMP_Z900_G5, __GI_strcmp) +# endif +#endif |