/* Search a character in a block of memory.  31/64 bit S/390 version.

   Copyright (C) 2001-2018 Free Software Foundation, Inc.

   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).

   This file is part of the GNU C Library.

   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 to memory area

     %r3 = character to find

     %r4 = number of bytes to search.  */

#include <ifunc-memchr.h>

#include "sysdep.h"

#include "asm-syntax.h"

#if HAVE_MEMCHR_Z900_G5

# if defined __s390x__

#  define SLGR	slgr

#  define LGHI	lghi

#  define NGR	ngr

#  define LGR	lgr

# else

#  define SLGR	slr

#  define LGHI	lhi

#  define NGR	nr

#  define LGR	lr

# endif /* ! defined __s390x__  */

	.text

ENTRY(MEMCHR_Z900_G5)

	LGHI  %r0,0xff

	NGR   %r0,%r3

	LGR   %r1,%r2

	la    %r2,0(%r4,%r1)

0:	srst  %r2,%r1

	jo    0b

	brc   13,1f

	SLGR  %r2,%r2

1:	br    %r14

END(MEMCHR_Z900_G5)

# if ! HAVE_MEMCHR_IFUNC

strong_alias (MEMCHR_Z900_G5, __memchr)

weak_alias (__memchr, memchr)

# endif

# if defined SHARED && IS_IN (libc)

strong_alias (MEMCHR_Z900_G5, __GI_memchr)

# endif

#endif