Remove sysdeps/alpha/soft-fp directory.

As per <https://sourceware.org/ml/libc-alpha/2014-10/msg00369.html>,
there should not be separate sysdeps/<arch>/soft-fp directories when
those are used by all configurations that use sysdeps/<arch>, and,
more generally, should not be sysdeps/foo/Implies files pointing to a
subdirectory foo/bar.  This patch eliminates the
sysdeps/alpha/soft-fp directory accordingly, merging its contents
into sysdeps/alpha.

Tested with build-many-glibcs.py that installed stripped shared
libraries for alpha-linux-gnu are unchanged by this patch.

	* sysdeps/alpha/Implies: Remove alpha/soft-fp.
	* sysdeps/alpha/Makefile [$(subdir) = soft-fp] (sysdep_routines):
	Add functions moved from ....
	[$(subdir) = math] (CPPFLAGS): Add -I../soft-fp.  Moved from ....
	* sysdeps/alpha/soft-fp/Makefile: ... here.  Remove file.
	* sysdeps/alpha/Versions (libc): Add GLIBC_2.3.4 symbols moved
	from ....
	* sysdeps/alpha/soft-fp/Versions: ... here.  Remove file.
	* sysdeps/alpha/soft-fp/e_sqrtl.c: Move to ....
	* sysdeps/alpha/e_sqrtl.c: ... here.
	* sysdeps/alpha/soft-fp/local-soft-fp.h: Move to ....
	* sysdeps/alpha/local-soft-fp.h: ... here.
	* sysdeps/alpha/soft-fp/ots_add.c: Move to ....
	* sysdeps/alpha/ots_add.c: ... here.
	* sysdeps/alpha/soft-fp/ots_cmp.c: Move to ....
	* sysdeps/alpha/ots_cmp.c: ... here.
	* sysdeps/alpha/soft-fp/ots_cmpe.c: Move to ....
	* sysdeps/alpha/ots_cmpe.c: ... here.
	* sysdeps/alpha/soft-fp/ots_cvtqux.c: Move to ....
	* sysdeps/alpha/ots_cvtqux.c: ... here.
	* sysdeps/alpha/soft-fp/ots_cvtqx.c: Move to ....
	* sysdeps/alpha/ots_cvtqx.c: ... here.
	* sysdeps/alpha/soft-fp/ots_cvttx.c: Move to ....
	* sysdeps/alpha/ots_cvttx.c: ... here.
	* sysdeps/alpha/soft-fp/ots_cvtxq.c: Move to ....
	* sysdeps/alpha/ots_cvtxq.c: ... here.
	* sysdeps/alpha/soft-fp/ots_cvtxt.c: Move to ....
	* sysdeps/alpha/ots_cvtxt.c: ... here.
	* sysdeps/alpha/soft-fp/ots_div.c: Move to ....
	* sysdeps/alpha/ots_div.c: ... here.
	* sysdeps/alpha/soft-fp/ots_mul.c: Move to ....
	* sysdeps/alpha/ots_mul.c: ... here.
	* sysdeps/alpha/soft-fp/ots_nintxq.c: Move to ....
	* sysdeps/alpha/ots_nintxq.c: ... here.
	* sysdeps/alpha/soft-fp/ots_sub.c: Move to ....
	* sysdeps/alpha/ots_sub.c: ... here.
	* sysdeps/alpha/soft-fp/sfp-machine.h: Move to ....
	* sysdeps/alpha/sfp-machine.h: ... here.

1 files changed, 49 insertions, 0 deletions

diff --git a/sysdeps/alpha/e_sqrtl.c b/sysdeps/alpha/e_sqrtl.c
new file mode 100644
index 0000000000..689681adfc
--- /dev/null
+++ b/sysdeps/alpha/e_sqrtl.c
@@ -0,0 +1,49 @@
+/* long double square root in software floating-point emulation.
+   Copyright (C) 1997-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Richard Henderson (rth@cygnus.com) and
+		  Jakub Jelinek (jj@ultra.linux.cz).
+
+   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 <stdlib.h>
+#include <soft-fp.h>
+#include <quad.h>
+#include <shlib-compat.h>
+
+long double
+__ieee754_sqrtl (const long double a)
+{
+  FP_DECL_EX;
+  FP_DECL_Q(A); FP_DECL_Q(C);
+  long double c;
+  long _round = 4;	/* dynamic rounding */
+
+  FP_INIT_ROUNDMODE;
+  FP_UNPACK_Q(A, a);
+  FP_SQRT_Q(C, A);
+  FP_PACK_Q(c, C);
+  FP_HANDLE_EXCEPTIONS;
+  return c;
+}
+
+/* ??? We forgot to add this symbol in 2.15.  Getting this into 2.18 isn't as
+   straight-forward as just adding the alias, since a generic Versions file
+   includes the 2.15 version and the linker uses the first one it sees.  */
+#if SHLIB_COMPAT (libm, GLIBC_2_15, GLIBC_2_18)
+versioned_symbol (libm, __ieee754_sqrtl, __sqrtl_finite, GLIBC_2_18);
+#else
+strong_alias(__ieee754_sqrtl, __sqrtl_finite)
+#endif