1 files changed, 63 insertions, 0 deletions
diff --git a/sysdeps/s390/memchr-z900.S b/sysdeps/s390/memchr-z900.S
new file mode 100644
index 0000000000..c016bc41c6
--- /dev/null
+++ b/sysdeps/s390/memchr-z900.S
@@ -0,0 +1,63 @@
+/* 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