[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/sysdeps/i386/ffs.c b/ap/libc/glibc/glibc-2.22/sysdeps/i386/ffs.c
new file mode 100644
index 0000000..db08e4e
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/sysdeps/i386/ffs.c
@@ -0,0 +1,51 @@
+/* ffs -- find first set bit in a word, counted from least significant end.
+ For Intel 80x86, x>=3.
+ This file is part of the GNU C Library.
+ Copyright (C) 1991-2015 Free Software Foundation, Inc.
+ 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 <string.h>
+
+#undef ffs
+
+#ifdef __GNUC__
+
+int
+__ffs (x)
+ int x;
+{
+ int cnt;
+ int tmp;
+
+ asm ("xorl %0,%0\n" /* Set CNT to zero. */
+ "bsfl %2,%1\n" /* Count low bits in X and store in %1. */
+ "jz 1f\n" /* Jump if OK, i.e. X was non-zero. */
+ "leal 1(%1),%0\n" /* Return bsfl-result plus one on %0. */
+ "1:" : "=&a" (cnt), "=r" (tmp) : "rm" (x));
+
+ return cnt;
+}
+weak_alias (__ffs, ffs)
+libc_hidden_def (__ffs)
+libc_hidden_builtin_def (ffs)
+#undef ffsl
+weak_alias (__ffs, ffsl)
+
+#else
+#include <string/ffs.c>
+#endif