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/* Search a character in a block of memory. For IBM S390
Copyright (C) 2000-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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/>. */
/*
* R2 = address to memory area
* R3 = character to find
* R4 = number of bytes to search
*/
#include "sysdep.h"
#include "asm-syntax.h"
.text
ENTRY(memchr)
lhi %r0,0xff
nr %r0,%r3
lr %r1,%r2
la %r2,0(%r4,%r1)
0: srst %r2,%r1
jo 0b
brc 13,1f
slr %r2,%r2
1: br %r14
END(memchr)
libc_hidden_builtin_def (memchr)
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