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60 lines
1.6 KiB
ArmAsm
60 lines
1.6 KiB
ArmAsm
/* strcmp - compare two string. 64 bit S/390 version.
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This file is part of the GNU C Library.
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Copyright (C) 2001-2019 Free Software Foundation, Inc.
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* INPUT PARAMETERS
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%r2 = address of string 1
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%r3 = address of string 2. */
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#include <ifunc-strcmp.h>
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#include "sysdep.h"
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#include "asm-syntax.h"
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#if HAVE_STRCMP_Z900_G5
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# if defined __s390x__
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# define SLGR slgr
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# define LGHI lghi
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# else
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# define SLGR slr
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# define LGHI lhi
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# endif /* ! defined __s390x__ */
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.text
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ENTRY(STRCMP_Z900_G5)
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SLGR %r0,%r0
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0: clst %r2,%r3
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jo 0b
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jp 1f
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jm 2f
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SLGR %r2,%r2
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br %r14
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1: LGHI %r2,1
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br %r14
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2: LGHI %r2,-1
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br %r14
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END(STRCMP_Z900_G5)
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# if ! HAVE_STRCMP_IFUNC
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strong_alias (STRCMP_Z900_G5, strcmp)
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# endif
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# if defined SHARED && IS_IN (libc)
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strong_alias (STRCMP_Z900_G5, __GI_strcmp)
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# endif
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#endif
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