Relocate alpha from ports to libc

Also fixed the following whitespace nits to satisfy the push:

sysdeps/alpha/alphaev6/memset.S:142: space before tab in indent.
sysdeps/alpha/configure:1: new blank line at EOF.
sysdeps/alpha/fpu/e_sqrt.c:126: space before tab in indent.
sysdeps/alpha/preconfigure:1: new blank line at EOF.
sysdeps/unix/sysv/linux/alpha/syscalls.list:1: new blank line at EOF.

1 files changed, 35 insertions, 0 deletions

diff --git a/sysdeps/alpha/fpu/feenablxcpt.c b/sysdeps/alpha/fpu/feenablxcpt.c
new file mode 100644
index 0000000000..f9eb203c1e
--- /dev/null
+++ b/sysdeps/alpha/fpu/feenablxcpt.c
@@ -0,0 +1,35 @@
+/* Enable floating-point exceptions.
+   Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2000.
+
+   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_libc.h>
+
+int
+feenableexcept (int excepts)
+{
+  unsigned long int new_exc, old_exc;
+
+  new_exc = __ieee_get_fp_control ();
+
+  old_exc = (new_exc & SWCR_ENABLE_MASK) << SWCR_ENABLE_SHIFT;
+  new_exc |= (excepts >> SWCR_ENABLE_SHIFT) & SWCR_ENABLE_MASK;
+
+  __ieee_set_fp_control (new_exc);
+
+  return old_exc;
+}