[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/setfpucw.c b/ap/libc/glibc/glibc-2.22/sysdeps/i386/setfpucw.c
new file mode 100644
index 0000000..d7cc409
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/sysdeps/i386/setfpucw.c
@@ -0,0 +1,54 @@
+/* Set the FPU control word for x86.
+ Copyright (C) 2003-2015 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <math.h>
+#include <fpu_control.h>
+#include <fenv.h>
+#include <unistd.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
+
+void
+__setfpucw (fpu_control_t set)
+{
+ fpu_control_t cw;
+
+ /* Fetch the current control word. */
+ __asm__ ("fnstcw %0" : "=m" (*&cw));
+
+ /* Preserve the reserved bits, and set the rest as the user
+ specified (or the default, if the user gave zero). */
+ cw &= _FPU_RESERVED;
+ cw |= set & ~_FPU_RESERVED;
+
+ __asm__ ("fldcw %0" : : "m" (*&cw));
+
+ /* If the CPU supports SSE, we set the MXCSR as well. */
+ if ((GLRO(dl_hwcap) & HWCAP_I386_XMM) != 0)
+ {
+ unsigned int xnew_exc;
+
+ /* Get the current MXCSR. */
+ __asm__ ("stmxcsr %0" : "=m" (*&xnew_exc));
+
+ xnew_exc &= ~((0xc00 << 3) | (FE_ALL_EXCEPT << 7));
+ xnew_exc |= ((set & 0xc00) << 3) | ((set & FE_ALL_EXCEPT) << 7);
+
+ __asm__ ("ldmxcsr %0" : : "m" (*&xnew_exc));
+ }
+}