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, 47 insertions, 0 deletions

diff --git a/sysdeps/alpha/fpu/fegetenv.c b/sysdeps/alpha/fpu/fegetenv.c
new file mode 100644
index 0000000000..ef688f20a3
--- /dev/null
+++ b/sysdeps/alpha/fpu/fegetenv.c
@@ -0,0 +1,47 @@
+/* Store current floating-point environment.
+   Copyright (C) 1997-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Richard Henderson <rth@tamu.edu>, 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_libc.h>
+
+int
+__fegetenv (fenv_t *envp)
+{
+  unsigned long int fpcr;
+  unsigned long int swcr;
+
+  /* Get status from software and hardware.  Note that we don't need an
+     excb because the callsys is an implied trap barrier.  */
+  swcr = __ieee_get_fp_control ();
+  __asm__ __volatile__ ("mf_fpcr %0" : "=f" (fpcr));
+
+  /* Merge the two bits of information.  */
+  *envp = ((fpcr & FPCR_ROUND_MASK) | (swcr & SWCR_ALL_MASK));
+
+  /* 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
+
+versioned_symbol (libm, __fegetenv, fegetenv, GLIBC_2_2);
+libm_hidden_ver(__fegetenv, fegetenv)