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Diffstat (limited to 'REORG.TODO/sysdeps/i386/fpu/fegetenv.c')
-rw-r--r--REORG.TODO/sysdeps/i386/fpu/fegetenv.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/i386/fpu/fegetenv.c b/REORG.TODO/sysdeps/i386/fpu/fegetenv.c
new file mode 100644
index 0000000000..983f6af25e
--- /dev/null
+++ b/REORG.TODO/sysdeps/i386/fpu/fegetenv.c
@@ -0,0 +1,49 @@
+/* Store current floating-point environment.
+   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
+__fegetenv (fenv_t *envp)
+{
+  __asm__ ("fnstenv %0" : "=m" (*envp));
+  /* And load it right back since the processor changes the mask.
+     Intel thought this opcode to be used in interrupt handlers which
+     would block all exceptions.  */
+  __asm__ ("fldenv %0" : : "m" (*envp));
+
+  if (HAS_CPU_FEATURE (SSE))
+    __asm__ ("stmxcsr %0" : "=m" (envp->__eip));
+
+  /* Success.  */
+  return 0;
+}
+
+#include <shlib-compat.h>
+#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
+strong_alias (__fegetenv, __old_fegetenv)
+compat_symbol (libm, __old_fegetenv, fegetenv, GLIBC_2_1);
+#endif
+
+libm_hidden_def (__fegetenv)
+libm_hidden_ver (__fegetenv, fegetenv)
+versioned_symbol (libm, __fegetenv, fegetenv, GLIBC_2_2);