1 files changed, 42 insertions, 0 deletions
diff --git a/sysdeps/s390/strncmp.c b/sysdeps/s390/strncmp.c
new file mode 100644
index 0000000000..40d123b81d
--- /dev/null
+++ b/sysdeps/s390/strncmp.c
@@ -0,0 +1,42 @@
+/* Multiple versions of strncmp.
+   Copyright (C) 2015-2019 Free Software Foundation, Inc.
+   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
+   <https://www.gnu.org/licenses/>.  */
+
+#include <ifunc-strncmp.h>
+
+#if HAVE_STRNCMP_IFUNC
+# define strncmp __redirect_strncmp
+/* Omit the strncmp inline definitions because it would redefine strncmp.  */
+# define __NO_STRING_INLINES
+# include <string.h>
+# undef strncmp
+# include <ifunc-resolve.h>
+
+# if HAVE_STRNCMP_C
+extern __typeof (__redirect_strncmp) STRNCMP_C attribute_hidden;
+# endif
+
+# if HAVE_STRNCMP_Z13
+extern __typeof (__redirect_strncmp) STRNCMP_Z13 attribute_hidden;
+# endif
+
+s390_libc_ifunc_expr (__redirect_strncmp, strncmp,
+		      (HAVE_STRNCMP_Z13 && (hwcap & HWCAP_S390_VX))
+		      ? STRNCMP_Z13
+		      : STRNCMP_DEFAULT
+		      )
+#endif /* HAVE_STRNCMP_IFUNC  */