Remove sysdeps/aarch64/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/aarch64/soft-fp directory accordingly, merging its contents
into sysdeps/aarch64.

Tested with build-many-glibcs.py that installed stripped shared
libraries for aarch64 configurations are unchanged by this patch.

	* sysdeps/aarch64/Implies: Remove aarch64/soft-fp.
	* sysdeps/aarch64/Makefile [$(subdir) = math] (CPPFLAGS): Add
	-I../soft-fp.  Moved from ....
	* sysdeps/aarch64/soft-fp/Makefile: ... here.  Remove file.
	* sysdeps/aarch64/soft-fp/e_sqrtl.c: Move to ....
	* sysdeps/aarch64/e_sqrtl.c: ... here.
	* sysdeps/aarch64/soft-fp/sfp-machine.h: Move to ....
	* sysdeps/aarch64/sfp-machine.h: ... here.

3 files changed, 0 insertions, 162 deletions

diff --git a/sysdeps/aarch64/soft-fp/Makefile b/sysdeps/aarch64/soft-fp/Makefile
deleted file mode 100644
index ada13e8b70..0000000000
--- a/sysdeps/aarch64/soft-fp/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-ifeq ($(subdir),math)
-CPPFLAGS += -I../soft-fp
-endif
diff --git a/sysdeps/aarch64/soft-fp/e_sqrtl.c b/sysdeps/aarch64/soft-fp/e_sqrtl.c
deleted file mode 100644
index 1dc1cbf003..0000000000
--- a/sysdeps/aarch64/soft-fp/e_sqrtl.c
+++ /dev/null
@@ -1,39 +0,0 @@
-/* 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>
-
-long double
-__ieee754_sqrtl (const long double a)
-{
-  FP_DECL_EX;
-  FP_DECL_Q(A); FP_DECL_Q(C);
-  long double c;
-
-  FP_INIT_ROUNDMODE;
-  FP_UNPACK_Q(A, a);
-  FP_SQRT_Q(C, A);
-  FP_PACK_Q(c, C);
-  FP_HANDLE_EXCEPTIONS;
-  return c;
-}
-strong_alias (__ieee754_sqrtl, __sqrtl_finite)
diff --git a/sysdeps/aarch64/soft-fp/sfp-machine.h b/sysdeps/aarch64/soft-fp/sfp-machine.h
deleted file mode 100644
index 3e969952fa..0000000000
--- a/sysdeps/aarch64/soft-fp/sfp-machine.h
+++ /dev/null
@@ -1,120 +0,0 @@
-#include <fenv.h>
-#include <fpu_control.h>
-
-#define _FP_W_TYPE_SIZE		64
-#define _FP_W_TYPE		unsigned long long
-#define _FP_WS_TYPE		signed long long
-#define _FP_I_TYPE		long long
-
-#define _FP_MUL_MEAT_S(R,X,Y)					\
-  _FP_MUL_MEAT_1_imm(_FP_WFRACBITS_S,R,X,Y)
-#define _FP_MUL_MEAT_D(R,X,Y)					\
-  _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
-#define _FP_MUL_MEAT_Q(R,X,Y)					\
-  _FP_MUL_MEAT_2_wide_3mul(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
-
-#define _FP_DIV_MEAT_S(R,X,Y)	_FP_DIV_MEAT_1_imm(S,R,X,Y,_FP_DIV_HELP_imm)
-#define _FP_DIV_MEAT_D(R,X,Y)	_FP_DIV_MEAT_1_udiv_norm(D,R,X,Y)
-#define _FP_DIV_MEAT_Q(R,X,Y)	_FP_DIV_MEAT_2_udiv(Q,R,X,Y)
-
-#define _FP_NANFRAC_S		((_FP_QNANBIT_S << 1) - 1)
-#define _FP_NANFRAC_D		((_FP_QNANBIT_D << 1) - 1)
-#define _FP_NANFRAC_Q		((_FP_QNANBIT_Q << 1) - 1), -1
-#define _FP_NANSIGN_S		0
-#define _FP_NANSIGN_D		0
-#define _FP_NANSIGN_Q		0
-
-#define _FP_KEEPNANFRACP 1
-#define _FP_QNANNEGATEDP 0
-
-/* From my experiments it seems X is chosen unless one of the
-   NaNs is sNaN,  in which case the result is NANSIGN/NANFRAC.  */
-#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)			\
-  do {								\
-    if ((_FP_FRAC_HIGH_RAW_##fs(X) |				\
-	 _FP_FRAC_HIGH_RAW_##fs(Y)) & _FP_QNANBIT_##fs)		\
-      {								\
-	R##_s = _FP_NANSIGN_##fs;				\
-        _FP_FRAC_SET_##wc(R,_FP_NANFRAC_##fs);			\
-      }								\
-    else							\
-      {								\
-	R##_s = X##_s;						\
-        _FP_FRAC_COPY_##wc(R,X);				\
-      }								\
-    R##_c = FP_CLS_NAN;						\
-  } while (0)
-
-#define _FP_DECL_EX		fpu_control_t _fcw
-
-#define FP_ROUNDMODE		(_fcw & _FPU_FPCR_RM_MASK)
-
-#define FP_RND_NEAREST		FE_TONEAREST
-#define FP_RND_ZERO		FE_TOWARDZERO
-#define FP_RND_PINF		FE_UPWARD
-#define FP_RND_MINF		FE_DOWNWARD
-
-#define FP_EX_INVALID		FE_INVALID
-#define FP_EX_OVERFLOW		FE_OVERFLOW
-#define FP_EX_UNDERFLOW		FE_UNDERFLOW
-#define FP_EX_DIVZERO		FE_DIVBYZERO
-#define FP_EX_INEXACT		FE_INEXACT
-
-#define _FP_TININESS_AFTER_ROUNDING 0
-
-#define FP_INIT_ROUNDMODE			\
-do {						\
-  _FPU_GETCW (_fcw);				\
-} while (0)
-
-#define FP_HANDLE_EXCEPTIONS						\
-  do {									\
-    const float fp_max = __FLT_MAX__;					\
-    const float fp_min = __FLT_MIN__;					\
-    const float fp_1e32 = 1.0e32f;					\
-    const float fp_zero = 0.0;						\
-    const float fp_one = 1.0;						\
-    unsigned fpsr;							\
-    if (_fex & FP_EX_INVALID)						\
-      {									\
-        __asm__ __volatile__ ("fdiv\ts0, %s0, %s0"			\
-			      :						\
-			      : "w" (fp_zero)				\
-			      : "s0");					\
-	__asm__ __volatile__ ("mrs\t%0, fpsr" : "=r" (fpsr));		\
-      }									\
-    if (_fex & FP_EX_DIVZERO)						\
-      {									\
-	__asm__ __volatile__ ("fdiv\ts0, %s0, %s1"			\
-			      :						\
-			      : "w" (fp_one), "w" (fp_zero)		\
-			      : "s0");					\
-	__asm__ __volatile__ ("mrs\t%0, fpsr" : "=r" (fpsr));		\
-      }									\
-    if (_fex & FP_EX_OVERFLOW)						\
-      {									\
-        __asm__ __volatile__ ("fadd\ts0, %s0, %s1"			\
-			      :						\
-			      : "w" (fp_max), "w" (fp_1e32)		\
-			      : "s0");					\
-        __asm__ __volatile__ ("mrs\t%0, fpsr" : "=r" (fpsr));		\
-      }									\
-    if (_fex & FP_EX_UNDERFLOW)						\
-      {									\
-	__asm__ __volatile__ ("fmul\ts0, %s0, %s0"			\
-			      :						\
-			      : "w" (fp_min)				\
-			      : "s0");					\
-	__asm__ __volatile__ ("mrs\t%0, fpsr" : "=r" (fpsr));		\
-      }									\
-    if (_fex & FP_EX_INEXACT)						\
-      {									\
-	__asm__ __volatile__ ("fsub\ts0, %s0, %s1"			\
-			      :						\
-			      : "w" (fp_max), "w" (fp_one)		\
-			      : "s0");					\
-	__asm__ __volatile__ ("mrs\t%0, fpsr" : "=r" (fpsr));		\
-      }									\
-  } while (0)
-
-#define FP_TRAPPING_EXCEPTIONS ((_fcw >> FE_EXCEPT_SHIFT) & FE_ALL_EXCEPT)