1 files changed, 50 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/i386/fpu/feholdexcpt.c b/REORG.TODO/sysdeps/i386/fpu/feholdexcpt.c
new file mode 100644
index 0000000000..d327358913
--- /dev/null
+++ b/REORG.TODO/sysdeps/i386/fpu/feholdexcpt.c
@@ -0,0 +1,50 @@
+/* Store current floating-point environment and clear exceptions.
+   Copyright (C) 1997-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   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 <fenv.h>
+#include <unistd.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
+
+int
+__feholdexcept (fenv_t *envp)
+{
+  /* Store the environment.  Recall that fnstenv has a side effect of
+     masking all exceptions.  Then clear all exceptions.  */
+  __asm__ volatile ("fnstenv %0; fnclex" : "=m" (*envp));
+
+  /* If the CPU supports SSE we set the MXCSR as well.  */
+  if (HAS_CPU_FEATURE (SSE))
+    {
+      unsigned int xwork;
+
+      /* Get the current control word.  */
+      __asm__ ("stmxcsr %0" : "=m" (envp->__eip));
+
+      /* Set all exceptions to non-stop and clear them.  */
+      xwork = (envp->__eip | 0x1f80) & ~0x3f;
+
+      __asm__ ("ldmxcsr %0" : : "m" (*&xwork));
+    }
+
+  return 0;
+}
+libm_hidden_def (__feholdexcept)
+weak_alias (__feholdexcept, feholdexcept)
+libm_hidden_weak (feholdexcept)