[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/sysdeps/powerpc/ffs.c b/ap/libc/glibc/glibc-2.23/sysdeps/powerpc/ffs.c
new file mode 100644
index 0000000..c453db5
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/sysdeps/powerpc/ffs.c
@@ -0,0 +1,47 @@
+/* Find first set bit in a word, counted from least significant end.
+ For PowerPC.
+ Copyright (C) 1991-2016 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Torbjorn Granlund (tege@sics.se).
+
+ 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/>. */
+
+#define ffsl __something_else
+#include <limits.h>
+#include <string.h>
+
+#undef ffs
+
+#ifdef __GNUC__
+
+int
+__ffs (int x)
+{
+ int cnt;
+
+ asm ("cntlzw %0,%1" : "=r" (cnt) : "r" (x & -x));
+ return 32 - cnt;
+}
+weak_alias (__ffs, ffs)
+libc_hidden_def (__ffs)
+libc_hidden_builtin_def (ffs)
+#if ULONG_MAX == UINT_MAX
+#undef ffsl
+weak_alias (__ffs, ffsl)
+#endif
+
+#else
+#include <string/ffs.c>
+#endif