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, 44 insertions, 0 deletions

diff --git a/sysdeps/alpha/fpu/math_private.h b/sysdeps/alpha/fpu/math_private.h
new file mode 100644
index 0000000000..22ab3b9ab0
--- /dev/null
+++ b/sysdeps/alpha/fpu/math_private.h
@@ -0,0 +1,44 @@
+#ifndef ALPHA_MATH_PRIVATE_H
+#define ALPHA_MATH_PRIVATE_H 1
+
+/* In bits/mathinline.h we define __isnan et al.
+   In sysdeps/alpha/fpu/s_isnan.c we move the identifier out of the way
+   via macro hackery.  In both cases, tell math/math_private.h that
+   we have a local copy of the function.  */
+
+#ifndef __isnan
+# define __isnan  __isnan
+#endif
+#ifndef __isnanf
+# define __isnanf __isnanf
+#endif
+
+#include_next <math_private.h>
+
+#ifdef __alpha_fix__
+extern __always_inline double
+__ieee754_sqrt (double d)
+{
+  double ret;
+# ifdef _IEEE_FP_INEXACT
+  asm ("sqrtt/suid %1,%0" : "=f"(ret) : "f"(d));
+# else
+  asm ("sqrtt/sud %1,%0" : "=f"(ret) : "f"(d));
+# endif
+  return ret;
+}
+
+extern __always_inline float
+__ieee754_sqrtf (float d)
+{
+  float ret;
+# ifdef _IEEE_FP_INEXACT
+  asm ("sqrts/suid %1,%0" : "=f"(ret) : "f"(d));
+# else
+  asm ("sqrts/sud %1,%0" : "=f"(ret) : "f"(d));
+# endif
+  return ret;
+}
+#endif /* FIX */
+
+#endif /* ALPHA_MATH_PRIVATE_H */